JPS61260450A - Reel rest driving device - Google Patents

Abstract

PURPOSE:To protect individual members for the end of a tape or the like by providing a frictional body to transmit the rotational force to a reel rest. CONSTITUTION:A reel top 242 is press-fitted to the upper shaft part of the reel rest 241 and its internal cylinder is the rotation bearing of the reel rest. A washer 248 and a spring washer 247 are arranged between a bottom reel 240 and a reel gear 260. The spring washer 247 energizes upward a reel rest device 200 by its elastic force to allow the reel top 242 to abut a snap ring 251 provided on the shaft reel 241 and not only stabilizes vertical positions of the slip gear 252 and the reel gear 260 but also gives a proper back tension to the reel rest device 200. The washer 248 provided between the spring reel 247 and the reel gear 260 is an interposed member which uses the elastic force of the spring washer 247 to give a proper back tension to the reel rest device 200.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a reel rest drive device, particularly an automobile [Prior Art] The structure and operation of a conventional automatic reciprocating recording/reproducing machine will be explained with reference to the drawings. FIG. 16 is a plan view showing the state of a conventional tape player during playback. In Figure 16, main base 1 has 4
A pair of pinch rollers 3 sandwich the magnetic head 2 of the JI child.
3- is placed. Further, a movable board 4 is linked to the main base 1 so as to move towards and away from the main base 1. On the moving board 4 are a motor 5, a pair of capstans 6.6 having a coaxial flywheel, and a reel stand 7.
7' and an idler 9.9 inserted between the large diameter portions 8, 8- of the capstan 6.6- and the reel stand 7.7'.
' is placed. Magazine guide 1 on main base 1
When inserting the tape magazine 11 along 0.10=,
The second and second pilot bins of the movable board 4 are pushed by the front end surface, and the movable board 4 floats. As a result, the magnetic head 2 engages with the tape in the tape magazine 11, and at the same time the capstan 6.6' and reel shaft No. 3.11 move into the tape magazine 11, and one of the capstans 6.6- Engage one of the pinch rollers 3.3- with the tape sandwiched between them. Also, the reel axis 3rd. The third - engages with the tape reel frame (reel hub) in the tape magazine 11, and the idler 9.
One side of the capstan's large diameter portion 8.9- connects one side of the capstan's large diameter portion 8.8- with one of the reel stands 7, 7', so that tape playback is automatically started in conjunction with the insertion of the tape magazine. configured. Note that this reproduction state is locked when the set bin 14 of the movable board 4 engages with the hook portion 16 of the first set lever 15 pivotally attached to the main base 1. Such a configuration is well known as the so-called Stahl system. Now, in the rJ16 diagram, when the magnetic tape runs to the left, it is called a forward direction (F direction), and when it runs to the right, it is called a reverse direction (R direction). Therefore, regarding the tape drive mechanism, the part involved in forward running is called a forward drive system, and the part involved in reverse running is called a reverse drive system. In FIG. 16, the forward direction drive system 17 includes the pinch roller 3 on the left side of the figure, the capstan 6, the reel stand 7, and the idler 8, and the reverse direction drive system 17- includes the pinch roller 3' and the capstan on the right side. It includes a stun 6, a reel stand 7'', and an idler 9-. Switching between the forward direction drive system 17 and the reverse direction drive system 17- is performed as follows. FIG. 17 shows the forward direction drive system and the reverse direction drive system. 17 is a diagram showing a mode of switching with a drive system. In FIG. 17, a control plate 18 is disposed on the main base 1 so as to be slidable in the lateral direction. 11
1j The tall plate 18 has a reversing electromagnetic plunger 19 (
(see FIG. 16), they are linked so that they always slide alternately left and right every time they operate. The control plate 18 has on one side a pinch roller IIIJ Ml cam part 20.20-, to which actuating pins 21.21 of the pinch rollers 0-53, 3' are respectively linked. Also Ill Ml board 18
An idler control cam portion 22, 22- is provided on the other side edge of the idler 9, 9', respectively.
．． 2.3= is linked. The idlers 9,9' are each pivoted on a swing lever 24,24-, and these swing levers 24, 24-
At one end of ゜24' there is a spring 25゜25, respectively.
- are connected, and the idlers 9, 9- are urged in a direction to press against the large diameter portion 8.8' of the capstan and the reel stand 7.7', respectively. On the other hand, the nuchal part! The above-mentioned operating pins 23, 23' are pivotally connected to the free ends of the rotating arms 26, 26-, which are pivotally connected to the moving base plate 4, respectively. These rotating arms 26.26- are biased by springs 27.27'' in a direction that separates the idlers 9.9- from the respective reel stands 7.7-, but when stopped, the operating bins 23.23- is -1
-When separated from the plate 18, these rotating arms 26°26-
27. The second load bottle is pushed against the spring 27.27-. It is stopped by the second large diameter section 28.28. According to this configuration, the control plate 18 is arranged as shown in FIG.
When the operating bin 21' engages with the 11JII1 cam portion 20', the operating bin 23- is removed from the idler 1111111 cam section 22'. As a result, the pinch roller 3' and the idler 9' each move to the capstan 6-
and a drive diameter 17- in the reversal direction separated from the reel stand 7'.
becomes inactive. On the other hand, the left pinch roller III
When the operating bin 21 is withdrawn from the cam unit 20 and the operating bin 23 engages with the idler control cam unit 22, the pinch roller 3 and idler 9 are pressed against the capstan 6 and the reel stand 7, respectively, and are driven in the forward direction. Diameter 17 is activated. This allows tape playback in the forward direction. The reversing electromagnetic plunger 19 operates and the 111111 plate 1
8 slides to the right, contrary to the above, as shown in FIG. Tape playback in the reverse direction becomes possible. In this case, each time the reversing electromagnetic plunger 19 operates, the control plate 1
8 slides alternately left and right as described above. A belt is placed between the motor 5 and the flywheel 29.29 so that the flywheels 29.29- rotate in opposite directions. Next, the operation during high-speed running will be explained. In the tape player shown in FIG. 16, the reproduction running direction of the tape drive mechanism is detected and high-speed rotation is applied to the reel stands 7 and 7' on either side of the forward direction drive system 17 and the reverse direction drive system 17'. A high-speed travel selection device 30 is provided for selecting one of the following. This selection device 30 includes a detection cam 32 formed integrally with the control plate 18 and consisting of first and second cam portions 31, 31, and a cam follower 33.
3 is a rotating plate 35 which is pivotally supported by a support shaft 34 on the transfer 11i [4].
It is planted at one end of the A substantially U-shaped retaining spring 36 is fixed to the rotating plate 35, and a high-speed intermediate wheel 37 is held between the free ends of the retaining spring 36. As best shown in FIG. 21, this intermediate wheel 37 includes a first transmission wheel 39 and a flywheel 29.29- located at the upper and lower ends of @38, respectively, in the common vicinity of the reel stand 7.7-. The second transmission driving wheel 40 located in the common vicinity of
The free end of the holding spring 36 is fitted into the groove 41 of one receiver, and the green portion of the guide window 44 of the moving board 4 is fitted into the groove 42 of the other receiver. In the above configuration, during forward playback, the control plate 18
is sliding to the left as shown in FIG. 17, so that the detecting cam 32 has its 1111 force ram portion 31 in contact with the cam follower 33. In this state,
Rotate the operating lever 45 clockwise as shown in FIG. 22. This will now be referred to as the first external operation. This operation lever 45 is arranged so that it can be pushed into the main base 1 and freely rotated by fitting its elongated hole 46 into a support shaft 47, and its bent protrusion 48°4
An actuating lever 51, which is pivotally connected to the main base 1 by a support shaft 50, is held between the two. A release pin 55 is implanted at the tip of the actuating lever 51 so as to face each cam portion 53, 54 of the first and second set levers 15, 52 which are pivotally connected to the main base 1. When the above-mentioned first external operation is performed on the operating lever 45, as shown in FIG. 22, the operating lever 51 is pushed by the projection 48 and rotates clockwise, thereby releasing it. The cam portion 53 of the first set lever 15 is pushed by the pin 55, rotates, and the hook portion 16 disengages from the set pin 14. As a result, the movable base plate 4 attempts to move to the stop position due to the bias of the return spring, but in the middle of this movement, the set bin 14 is moved to the hook portion 5 of the second set lever 52.
6, thereby locking the moving base plate 4 in the intermediate position. At this intermediate position, the tape magazine 11
moves away to a position where the tape and magnetic head 2 are disengaged, and the capstan 6.6' moves away from the pinch roller 3.
1. #, and the idlers 9 and 9' are respectively removed from the reel stands 7 and 7', canceling the constant speed writing function of the tape and enabling high speed running. When the movable substrate 4 is shifted to the intermediate position by the first external operation as described above, the aforementioned selection device 30 is
is activated, and regardless of whether the tape playback direction is forward or reverse, it will always be fast forward or backward, but in this case it is configured to always rewind, and its operation is as described below. It is. During forward regeneration, the control plate 18 slides to the left to operate the forward drive system 17, as shown in FIG. The detection cam 32 is therefore ready with its first cam portion 31 to cooperate with the cam follower 33 . When the moving board 4 is shifted to the intermediate position as described above, the cam follower 33 moves to the first position.
□ rides on the cam portion 31, thereby rotating the rotating plate 35 in the counterclockwise direction as shown in the 18th factor, and the first and second transmission wheels 39 and 40 of the intermediate wheel 37 are respectively driven in the reverse direction. It is pressed against the reel stand 7' and the flywheel 29' included in the system 17', and the rotation of the flywheel 29' is transmitted to the reel stand 7' via this intermediate wheel 37, causing the reel stand 7- to rotate at high speed in reverse. then rewind the tape more rapidly in the reverse direction than in the forward direction. On the other hand, when reproducing in the reverse direction, as shown in FIG. 19, the control plate 18 slides rightward to operate the reverse direction drive system 17'. In this case, the detection cam 3
2 has its second cam portion 31 ready for cooperation with the cam follower 33. Therefore, in this case, when the moving base plate 4 is shifted to the intermediate position, the cam follower 33 is moved to the second cam portion 31.
20, the rotating plate 35 is rotated clockwise as shown in FIG. The tape is brought into pressure contact with the reel stand 7 and the flywheel 29, and the reel stand 7 is rotated forward at high speed to quickly turn the tape back in the forward direction than in the reverse direction. Next, the tape fast forwarding operation will be explained. Operation lever 4
The operating lever 51 also rotates clockwise when the lever 5 is rotated in the first external operation, that is, clockwise, and when it is rotated counterclockwise. That is,
This operating lever 51 is connected to the projections 48 and 49 of the operating lever 45.
A changeover switch S is sandwiched between the control lever 45 and the main base 1, and is fixed to the control lever 45 and the main base 1 so that the changeover switch S1 is activated when the control lever 45 is further rotated counterclockwise.
1 is connected by a lever 57, and a detection switch S as shown in FIG.
A pressing bottle 58 is provided on the 11th surface of the movable base plate 4 so that the detection switch S2 is activated once each time the movable base plate 4 shifts between the reproduction position and the intermediate position. As shown in FIG. 25, these switches 81 and 82 are connected in series to the energizing circuit of the reversing electromagnetic plunger t19.
Further, a tape end detector 59 is arranged in parallel to the series circuit. In such a configuration, when the operating lever 45 is rotated counterclockwise as shown in FIG.
9 pushes the operating lever 51, and this operating lever 51
is rotated clockwise in the same manner as in the first external operation described above. This counterclockwise operation of the operating lever 45 will now be referred to as a second external operation. This rotation of the operating lever 51 causes the movable board 4 to shift from the playback position to the intermediate position, and in conjunction with this, the selection device t30 is operated, but in the case of this second external operation, the rewind function described above is replaced. to perform the fast forward function. Its operation is as follows. When the operating lever 45 is rotated counterclockwise as shown in FIG. 23, the contact point a of the changeover switch S1 rolls into contact with the contact point C. As a result, when the movable board 4 is shifted from the playback position to the intermediate position by this second external operation, the push bottle 58 presses the piece 1960 of the detection switch S2 during the shift. When in the closed state, the reversing electromagnetic plunger 19 operates once and the control plate 18 slides. As a result, the reproduction traveling direction of the tape drive mechanism is once reversed. For this purpose, the selection device 30 detects the direction opposite to the running direction during performance. If the traveling direction during playback is the forward direction, the control plate 1
8 has slid to the left as shown in FIG. 17, and its detection cam 32 has its first cam portion 31 ready for cooperation with the cam follower 33. However, when the second external operation is performed, as described above, the control plate 18 is slid to the right of the reversing direction traveling position by the reversing electromagnetic plunger 19 as shown in FIG. The two-cam part 31' is now ready to cooperate with the cam follower 33. Therefore, when the moving board 4 is moved to the intermediate position, the rotating plate 35 rotates clockwise as shown in FIG. 20. For this purpose, the first and second transmission wheels 39 . of the intermediate wheel 37 .
40 are in pressure contact with the reel stand 7 and the flywheel 29 included in the forward drive system 17, respectively, and rotate the reel stand 7 at high speed to make the tape run at high speed in the same direction as the running direction during playback (forward direction). fast forward). On the other hand, when the running direction during playback is the reverse direction, the control plate 18 slides to the right as shown in FIG. We are in a state of preparation for collaboration. At this time, when the second external operation is performed, the reversing electromagnetic plunger 19 causes the control plate 18 to slide to the left of the forward running position as shown in FIG. is ready to cooperate with the cam follower 33, so that the displacement of the movable base plate 4 to the intermediate position causes the rotary plate 35 to rotate counterclockwise as shown in FIG. For this purpose, the first
and the second transmission wheels 39 and 40 are each reverse direction drive system 17
' reel stand 7' and flywheel 29-
By pressing the tape into contact with and rotating the reel stand 7- at high speed, the tape is run at high speed in the same direction as the running direction (reverse direction) during playback, that is, fast-forwarded. [Problems to be Solved by the Invention] Conventional automatic reciprocating tape players are constructed as described above, and perform playback, fast forwarding, rewinding, etc. of a magnetic tape. However, in recent years, high-performance tape players equipped with microcomputers and the like have become necessary even in magnetic recording/reproducing machines (tape players) installed in automobiles. Accordingly, there are demands for tape players to be smaller in size and to have improved performance such as wah. However, in the conventional configuration, a magnetic head is provided between the motor that serves as the drive source and the reel stand for tape winding, and the magnetic head is connected from the motor to the flywheel so that the flywheels rotate in opposite directions. It is necessary to hang a belt, and it is difficult to make the structure simple and compact. In addition, in order to transmit the rotational force to the reel stand, first and second transmission wheels that receive the rotational force from the flywheel and rotate simultaneously around the same rotation axis are used to transmit the rotational force to the reel stand. I try to give. Therefore, rotational distortion of the reel stand (reel rest) is directly transmitted to the flywheel, and vice versa, resulting in problems with wah performance and the like. Conversely, since the rotation of the flywheel, which rotates in response to the rotational force from the motor, is transmitted to the reel stand, the rotational force is transmitted to the reel stand even when the tape ends, and the rotational force is transmitted to the reel stand even when the tape ends. At times, large torques were applied, which could cause damage to various parts, such as seizure of the motor. In addition, a complicated mechanism is required to switch the tape running direction and the running angle of 31 degrees, and the control part cannot be configured in a centralized manner. It was difficult to configure. Therefore, it is an object of the present invention to eliminate the above-mentioned drawbacks and to provide a small, compact and high-performance reel rest drive device. [Means for Solving the Problems] In the reel rest drive device of the present invention, the rotating body of the cylinder 1 directly receives the rotational force from the motor. The rotational force of the first rotating body is transmitted via the friction body to the second rotating body, which rotates about the axis of the rotating body. The rotational force of the second rotating body is applied to the first rotating body rotating around the axis of the second rotating body.
It is applied to the reel rest via a gear and a second gear that rotates while meshing with the first gear. The axis of the second gear is mounted on a first control plate that is rotatably disposed between the first gear and the second rotating body with the first rotating body as the axis. On the other hand, a third gear that rotates in the same manner as the first rotor about the first rotor shaft is coupled to the upper portion of the first rotor shaft. The rotational force of the third gear is applied to the fourth gear which meshes with the third gear and rotates.
It is transmitted to the reel rest via the gear. The axis of the fourth gear is mounted on the 2111J III plate which is rotatably provided above the third gear about the axis of the first rotating body. Further, an elastic body is provided between the first rotating body and the third gear to press the second rotating body against the friction body. More preferably, a washer is provided between the elastic body and the second rotating body. [Operation] In response to the rotational force from the motor, the first rotational force is reliably transmitted to the reel rest by the gears through the path of the first rotating body, the friction body, the second rotating body, the first gear, and the second gear. ,Also,
The second rotational force is reliably transmitted to the reel rest through the path of the first rotating body, the third gear, and the fourth gear. The first and second control plates select either the second tooth W1 or the rotational force transmission path between the 4111th skewer and the reel rest to ensure the rotational force is transmitted. Since the friction body causes the second rotating body to slip when a torque exceeding the rated value is applied, it functions to protect each member at the end of the tape, etc. Furthermore, the dark washer between the elastic body and the second rotary body absorbs vibrations caused by twisting of the elastic body, and transfers force only in the vertical direction to the second rotating body.
to the rotating body to ensure that the second rotating body is brought into pressure contact with the friction body. [Embodiments of the Invention] Hereinafter, a case where a reel rest drive device according to the present invention is applied to an automatic reciprocating tape player mounted on an automobile will be described with reference to the drawings. FIG. 4 is a diagram showing the state of playback of a tape player according to an embodiment of the present invention. Here, the L regeneration state indicates a state in which the capstan F435a and the pinch roller F420a on the right side of FIG. 4 are in pressure contact. Structure of a tape player In Fig. 4, the tape player has a cassette case (
Setting the tape magazine), playing the magnetic tape (
A main base 100 on which each member for performing constant speed running) and rapid forwarding (l & constant speed running) is attached, and a main base 1o.
A motor 101 that is placed on one side (upper part of the drawing) of O and serves as a driving source, a reel rest device 200 that is placed approximately in the center of the main base 100, and a motor that transmits the rotational force from the motor 101 to the reel rest device. and a tape running control system 400 that is arranged along the other side (lower part in FIG. 4) of the main base 100 and runs the magnetic tape at a constant speed or at high speed. The motor 101 has a two-stage motor pulley 102, and the reel rest device 2oO has a pair of reel rests, ie, a reel rest F201a and a reel rest R201b, arranged in parallel to the other side of the main base. The reel rest drive device 300 has a bin lU3 that serves as a support shaft.
01. The drive device 300 is suspended inside a triangle formed by connecting the axis of the motor 1o1 and the axis of each of the reel rests 201a and 201b. A sub-base 103 is attached to a predetermined position of the main base 100, and a sub-motor (not shown) serves as a drive source for the drive arm 104 and the drive arm 104.
, serves as a mounting base for a reduction gear (not shown) for applying the rotational force of the sub-motor to the drive arm 104. The drive arm 104 has a bin D installed on the sub-base 104.
It is provided rotatably about 105 as an axis, and a bottle DA 106 is installed at one end thereof. The movement of the drive arm 104 is determined by the drive arm w attached to the sub-base 103.
Controlled by an AIll arm (not shown). The movement of the drive arm 104 allows the tape to run through a link PR107 which has a bifurcated claw at one end that engages with the bin DA106! ! It is transmitted to IIJ Gokei 400. Link PR
107 has a bottle LP108 planted at the other end,
The sub base 10 synchronizes with the movement of the drive arm 104.
The link cam 402 slides along the side wall of the
Communicate to. Tape running control system 400 includes a link cam 402 that has a long groove that engages with bottle LP108 set on link PR107 and is rotatable about bottle CL110 set on main base 100 as an axis. A bottle LC 403 is installed at a predetermined position of the link cam 402 and engages with a long hole formed at a predetermined position of the cam plate head 404 to transmit the movement of the link cam 402 to the cam plate 404. do. The cam plate head 404 is
A guide groove 411a in which the bin CF111a and the bin CR111b installed in the main space 100 are respectively engaged.
, 41 lb, and can slide in the directions of arrows F and R (left and right) in FIG. 4 in conjunction with the movement of the link cam 402. Furthermore, the cam plate head 404 includes a cam F415a and a cam R415b for regulating the opening of the pinch roller F420a and the pinch roller R420b, respectively.
It has a cam H421 for retracting the magnetic head 151 from the tape reproducing position during fast forwarding of the magnetic tape 150, and a bottle CH422 that engages with the long groove of the cam plate direct 430 is installed at a predetermined position. Ru. The pinch roller F420a has an O-ra PF425a that engages with the cam F415a, and the main base 10
For example, in order to press the magnetic tape 150 against the capstan F435a when playing the magnetic tape in the direction of the white arrow F (positive direction) in FIG. is subjected to a biasing force by a spring. Further, the roller PF425a is configured to engage with a cam F415a provided on the cam plate head 4o4 so as not to press the magnetic tape 150 against the capstan F430a during playback in the direction of the white arrow R (reverse direction) in FIG. provided at the location. Capstan F430a. Each capstan R420b has a flywheel F4
70a, rotates around the central axis of the flywheel R470b. The flywheel F47Qa and the flywheel R470b both receive rotational force from the motor 101 via the main belt 170 and rotate in the same direction. The pinch roller R420e) receives a biasing force in a counterclockwise direction, for example, by b, during playback in the direction of the white arrow R in the drawing (reverse direction) with the bin PR No. 20b set on the main base 100 as an axis. , roller PR425b is
When playing (clockwise and forward direction in the drawing), the magnetic tape 15
Cam R4"15bk installed on the cam plate head 404 so as not to press the capstan R430b:
It is provided in a position such that it can be engaged. A head roller H431 that engages with the cam H421 is provided at a predetermined position of the base head 432. cam base head 43
2 is a bottle HF115a planted on the main base 100
, a guide groove that engages with the bin HR115b and the bin HC115C, respectively. This base head 432 can always move forward (from the bottom to the top in the drawing) toward the cassette case (tape magazine) by the biasing force of the spring head 434 in order to bring the magnetic head 151 into contact with the magnetic tape 152. Also, during tape fast forwarding, the roller H that engages with the cam H421 of the cam plate head 404
421 slides to the top of the cam H421, resisting the biasing force of the spring head 34 and retracting the magnetic head 151 from the position at the time of reproduction. One end of the spring head 434 is hung on the bottle 5H No. 21 set up on the main base 100, and the other end is hung on the base head 432, and the spring head 434 is attached to the base head 432 in the direction of the cassette case by its elastic force. to strengthen The plate director 430, which has a long groove that engages with the bin CH422 set on the cam plate head 404, is rotatably provided around the bin PD 22 set on the main base 100 as a pivot. The cam plate head 404 rotates in conjunction with the sliding movement of the cam plate head 404. Also, plate direct 4304
j Bin PL planted on plate lever idler 440
F441a has a cam DF436a and a cam DR436b which contact the pin PLR441b, respectively, and transmits the movement to the plate lever idler 440 via the cam DF436a and cam DR436b. The plate lever idler 440 has a long hole and a long groove that respectively engage the 31st bottle P1 and the 32nd bottle 11 that are set up on the main base 100, and uses these as a guide to move in conjunction with the movement of the plate direct 430. It is possible to slide in the direction of arrow PL or FF in the drawing (vertical direction in the drawing). In addition, the plate lever idler 440 is biased in the direction of arrow FF in the drawing (downward in the drawing) by the biasing force of the spring PL459, and the bin PLF 441a and the bin PLR 441b that are set up on the plate lever idler 440 are pushed into the cam of the plate director 430. Surface cam DF436a, cam DR4
It is brought into contact with one or both of 36b. Further, the plate lever idler 440 has a long groove that engages with a pin PLL 451 set on the lever idler 450, thereby controlling the movement of the plate lever idler 450.
Transmit to 0. The lever idler 450 is rotatable around the 32nd bottle L1 installed on the main base 100, and connects the plate lever idler 440 via the pin LL451 installed so as to engage the long groove. It rotates in conjunction with the sliding movement of 440. Further, the lever idler 450 is connected to the cam plate idler 2.
The cam plate idler 210 has a pin CC452 planted so as to engage with a long hole provided in the cam plate idler 210, and its movement is transmitted to the cam plate idler 210 via the pin CC452. The cam plate idler 210 has a long hole that engages with a bin CC 452 installed on the lever idler 450, and slides in conjunction with the rotation of the lever idler 452. Further, the cam plate idler 210 is connected to the bin M8-1 161. which is installed on the main base 100. It has guide grooves that engage with the bins MS-2162, respectively, and is indicated by thick arrows PL and FF in the figure.
It is possible to slide in the left and right directions in the drawing. Further, the cam plate idler 210 has a cam hole consisting of a wide part and a narrow part, that is, a cam PL206 and a cam F.
It has F208. Due to the movement of the cam plate idler 210, the reel rest drive device 300 is connected to either one of the reel rest drive devices 101 of the reel rest devices 200.
transmits rotational force from FIG. 1 of the reel rest drive is a sectional view showing the detailed structure of the reel rest drive device. In FIG. 1, the reel rest drive device 30
0 rotates around a shaft idler (bin ILI) 301 installed on the main base 100 as a central axis. A shaft portion of an idler pulley 310 that receives rotational force from the motor 101 via an idler belt 180 (see FIG. 4) is loosely fitted into the shaft idler 301 . The idler pulley 310 rotates around the shaft idler 301. A pulley 31 is located below the shaft of the idler pulley 310.
A metal 311 is lightly press-fitted to smooth the rotation of the shaft and maintain the initial state (state M with no shaft wear, etc.). A second friction body (felt in this embodiment) 3 is provided on the upper surface of the idler pulley 310, which is a slip mechanism (slips when a rated torque or more is applied). The rotational force of the idler pulley 310 is applied to the third FF base 3 which is loosely fitted to the middle part of the shaft of the pulley 310 via the second felt 3. FF base 3 3rd is pulley 31
It is possible to rotate with the intermediate part of the axis of 0 as the rotation axis. Pulley 3
The cylindrical lower part of the gear idler PL314 is press-fitted into the upper part of the shaft of the gear idler PL314. Therefore, gear idler PL314
performs the same rotation as pulley 310. Gear idler P
There is a spring FF between L314 and FF base 3.
A base 315 is provided. Spring FF base 31
One end of the gear idler PL 314 is brought into contact with the gear idler PL 314, and the other end is brought into contact with the third FF base 3 via a washer 316. The spring FF base 315 pushes down the third FF base 3 by its elastic force, and the third FF base 3
is pressed against the second felt 3. The friction torque generated by this pressure contact force is used as torque for early tape numbering via the gear FF 330, and is also used to prevent damage to each member (such as seizure of the motor 101) at the end of tape winding. Washer 316 is spring FF base 31
5 and the third FF base 3;
The third rotation is prevented from being transmitted to the spring FF base 315. A stopper collar 317 is press-fitted into the cylindrical upper part of the gear idler PL314. Therefore, the stopper collar 317 is connected to the gear idler PL314. The same rotation as the fiddler pulley 310 is performed. An idler base PL220 is interposed between the stopper collar 317 and the gear idler PL314, and the idler base PL22
0 is rotatable around the outer periphery of the stopper collar 317 as a rotation axis. Idler base PL220 and main base 1
A cam plate idler 210 is disposed between the cam plate idler 210 and the cam plate idler 210. The movement of the idler base PL220 is controlled by cams 206 and 208 provided on the cam plate idler 210. That is, the cam plate idler 210 is connected to the idler base PL220 and the idler base FF2.
There are two types of cams that regulate the movement of the idler base PL22, and the idler base PL22
0 and idler base FF 230 are appropriately engaged. Gear PL320 is installed on idler base PL220.
A shaft PL221 serving as a rotation axis is installed. A spring PL222 is disposed between idler base PL220 and gear PL320. Spring PL222
has one end in contact with the idler base PL220, and its elastic force urges the gear PL320 downward, and the gear P
Cover ring 223 provided on shaft PL221 with L320
Press it against the This eliminates variations in the vertical position of the gear PL320, and also causes the gear PL32 to shift due to the friction torque generated by the elastic force of the spring PL222.
A force is generated to rotate the idler base PL220 in the rotation direction of 0. Gear PL320 is gear idler PL3
14 and the teeth engage and rotate with the shaft PL221 as the rotation axis, and the rotational force of the gear idler PL314 is applied to the reel rest! 41 is an intermediate transmission member that transmits transmission to the 200th slip gear 250 (not shown in FIG. 1). A gear idler FF 340 is press-fitted onto the upper outer periphery of the third shaft of the FF base 3. As a result, the gear idler FF340 rotates in the same manner as the third FF base 3.
An idler base FF230 is rotatably inserted between the F340 and the third FF base 3. The idler base FF 230 is rotatable around the third intermediate portion of the FF base 3, and its movement is regulated by a cam FF 208 provided on the cam plate idler 210. A shaft FF231 serving as a rotation axis of a gear FF330 is installed on the idler base FF230. Gear F
A spring FF335 is arranged between F330 and idler base FF230. One end of the spring FF335 is brought into contact with the idler base FF230, and its elastic force urges the gear FF330 upward to bring it into pressure contact with the upper ring 232 provided on the shaft FF231. This eliminates variations in the vertical position of gear FF330, and generates a force that rotates idler base FF230 in the rotational direction of gear FF330 by the friction torque generated by the elastic force. A stopper bin 234 is installed in the idler base FF 230. Stopper bin 23
4 is a stopper function that comes into contact with the adjustment wind provided on the main base 100 during fast forwarding of the magnetic tape, and enables adjustment of the meshing between the reel gear 260 (not shown in FIG. 2) of the reel rest device and the gear FF 330. It is a bottle with . Structure of the idler base PL FIG. 2A is a plan view showing a mode in which the bottle F'L and the shaft PL are installed on the idler base PL, and FIG. 2B is a side view of FIG. 2A. The idler base PL220 is used as the slip gear 2 of the reel rest device during magnetic tape playback.
50 (see Fig. 5) is a holding plate for the gear PL320 that meshes with the gear PL320, and the small outer diameter of the stopper collar 317 is used as a rotating wheel.
The round hole 222 also does not impede the rotation of the stopper collar 317.
' in the center of Gffi. Also, during magnetic tape playback, the slip gear 250 of the reel rest device and the gear PL3
Corner R22 that comes into contact with the adjusting claw provided on the main base 100 in order to enable engagement with the main base 100.
3 and corner F224. Bin PL205 planted on idler base PL220
is a cam groove provided in the cam plate idler 210 in order to engage the slip gear 250 and the gear PL320 during magnetic tape reproduction, and to disengage the slip gear 250 and the gear PL320 during fast writing of the magnetic tape. 206. The shaft PL221 installed on the idler base 220 is connected to the gear PL32.
0 rotation axis. Figure 3A of the idler base FF shows a stopper bin on the idler base FF. It is a top view which shows the aspect which planted the bottle FF and the shaft FF. FIG. 3B is a front view of FIG. 3A, and the idler base FF230 is a holding plate for the gear FF330 that meshes with the reel gear 260 (see FIG. 5) of the reel rest device during fast forwarding of the magnetic tape, and the third The inner and outer diameters are used as rotation axes, and a round hole 235 that does not impede the rotation of the FF base 3 is provided approximately in the center. The stopper bin 234 is a bin installed on the idler base FF 230, and is used to stop the reel gear 260 and the gear FF during fast forwarding of the magnetic tape.
It functions as a stopper that comes into contact with the rA11 pawl provided on the main base 100 in order to enable adjustment of the engagement of the main base 100. Bin FF207 is idler base FF230
A cam groove 208 is provided in the cam plate idler 210 for the purpose of engaging the reel gear 260 and gear FF 330 during magnetic tape fast forwarding and disengaging the reel gear 260 and gear FF 330 during magnetic tape playback. engage with. The shaft FF231 is a bottle installed on the idler base FF230, and is the rotation axis of the gear FF260. From now on, reel rest drive 1i! The 300th is
During magnetic tape playback, the rotation of the idler base PL220 causes the reel rest Nil to move through the gear PL320.
During fast forwarding of the magnetic tape, the idler base FF230 is made rotatable to transmit rotational force to the reel rest via the gear FF330. FIG. 5 of the reel rest is a sectional view showing the detailed 1i configuration of the reel rest device. Reel rest F201a in FIG. Both reel rests R201b have the configuration shown in FIG. 5, and one of them is driven by the reel rest drive equipment shown in FIG. The configuration of the reel rest device will be described below with reference to FIG. 5. Reel rest in the designated position of the main base 10o! l1
A bottom reel 240 that serves as a support for Il is attached. A shaft reel 241 serving as a rotation axis of the reel rest device 200 is installed on the bottom reel 240 . The inner cylinder of the reel gear 260 is press-fitted with steel into the lower part of the shaft of the reel rest 201. The reel gear 260 is a tape winding drive source during tape fast forwarding, and receives rotational force from the 300th gear FF330 of the reel rest drive vIJ device to perform the same rotation as the reel rest 201. A slip gear 250 is loosely fitted onto the shaft of the reel rest 201 on the upper part of the reel gear 260. The slip gear 250 receives rotational force from the reel rest drive'@W 300th gear PL320 and rotates around the shaft of the reel rest 201. It rotates and serves as the tape winding drive source during magnetic tape playback. A spring reel 249 is provided between the reel gear 260 and the slip gear 250.
will be placed. One end of the spring reel 249 abuts against the beam lugs 260, and the other end abuts against the slip gear t'250. The slip gear 250 is urged upward by the elastic force of the spring reel 249, and is brought into pressure contact with a friction body (felt in this embodiment) 245 that is bonded to the lower surface of the reel rest 201 and serves as a slip mechanism. The rotational force of the slip gear 210 is applied to the reel rest 201 by the frictional force generated by this pressure contact force. Felt 245 has a slip mechanism (it slips when more than the rated torque is applied)
It has the functions of slip gear 250 and reel rest 20.
Smoothly absorbs a rotation difference of 1. The reel rest 201 is loosely fitted to the shaft reel 241, and in the playback mode,
It becomes a base for writing on a magnetic tape which is rotated by the rotational force of the slip gear 250 and by the rotational force of the reel gear 260 in the fast forward mode. An inner cylinder of a reel key 243 is loosely fitted onto the outer periphery of the upper part of the shaft of the reel rest 201. The outer periphery of the shaft of the reel rest 201 has a hexagonal shape, and the inner chamber of the reel key 243 also has a hexagonal shape. The reel key 243 is slidable up and down along the axis of the reel rest 251 and rotates in the same manner as the reel rest 201. This has been done conventionally. A spring key 244 is arranged between the reel rest 201 and the reel key 243. The lower end of the spring key 244 is brought into contact with the reel rest 201, thereby urging the reel key 243 upward and pressing the upper end of the reel key 243 against the lower end of the reel top 242. As a result, when the reel hub (not shown) of the cassette case comes into contact with the reel key 243 when the cassette case is attached, the reel key 243 moves elastically downward, allowing smooth attachment of the cassette case. The reel top 242 is press-fitted onto the upper part of the shaft of the reel rest 241, and its inner periphery serves as a rotation bearing for the reel rest 101. A washer v248 and a spring washer 247 are arranged between the bottom reel 240 and the reel gear 260. Spring washer 247 is the reel rest III with its elastic force!
200 upward to bring the reel top 242 into contact with the upper wheel 251 provided on the upper part of the shaft reel 241,
In addition, the vertical positions of the slip gear 252 and the reel gear 260 are stabilized, and the reel rest tAM200
give appropriate back tension. The washer 248 provided between the spring reel 247 and the reel gear 260 uses the elastic force of the spring washers 2 and 17 to move the reel rest Ml! This is an inclusion to give appropriate pack tension to 200. FIG. 6 is a diagram showing a path for transmitting the rotational force of the motor to the reel rest drive device and the capstan. In FIG. 6, a two-stage motor pulley 102 is provided on a rotating shaft 190 of a motor 101. As shown in FIG. The motor 101 is capable of rotating clockwise and counterclockwise, and during fast-forwarding of the magnetic tape, the effect of its rotational control is exhibited, resulting in faster rotation than during playback. The two-stage motor pulley 102 independently transmits the rotation of the motor 101 to the flywheel 470 and the pulley 310 of the reel rest drive device. The rotational force of the motor 101 is transmitted to the flywheel 470 via the main belt 170, while the pulley 310
The rotational force of the motor 101 is transmitted to the idler belt 180. The flywheel 470 rotates about the capstan 435 as a rotation axis. As seen from FIG. 6, the rotational direction of the motor 101 and the flywheel 470
And the rotation direction of pulley 310 is the same. FIG. 7 is a diagram showing details of the transmission path of each part that transmits the rotation of the motor to the reel rest device during magnetic tape reproduction. However, the portion of the reel rest drive device for a single winding of magnetic tape is omitted. Rotation of motor 101 is transmitted from motor pulley 102 to pulley 310 via idler belt 180. The rotation speed of the motor 101 is reduced by the diameter ratio of the motor pulley 102 and the pulley 310. Next, the rotation of pulley 310 is
Gear idler PL31 press-fitted into the upper part of 10
4 to the slip gear 250 of the reel rest device via the gear PL320. This reel rest 20
1 rotation speed is slip gear 250 and gear idler PL3
It is determined by a pitch circle diameter ratio of 20. Generally, when playing back a magnetic tape, it is necessary to make the rotational speed of the slip gear 250 faster than the rotational speed of the reel rest 201 to reliably pick up the magnetic tape. In order to absorb this difference in rotational speed, in this embodiment, the slip gear 250 is pressed against the felt 245 using the elastic force of the spring reel 249.
Therefore, it slides and rotates smoothly and generates writing torque for the magnetic tape. Operation Duplex m The operation during L playback will be described below with reference to the drawings. As shown in Figure 1144, during playback, drive arm 1
The bottle DA106 planted at 04 is locked at position F. Accordingly, link PR107 engaged with bin DA106.
, the link cam 402 engaged with the pin LP108 of the link PR107 rotates clockwise and locks. therefore,
The cam plate head 404 is located at approximately the end position in the direction of arrow F. Since a gap easily occurs between the roller H431 and the cam 421, the base head 432 is slidably locked by the biasing force of the spring head 434 at a predetermined position for magnetic tape reproduction. Since there is a gap between the pinch roller F420a and the O-ra PF425a and the cam F415a, the magnetic tape 150 is pushed against the capstan F4 by the clockwise rotating force.
35a. On the other hand, the pinch roller R420b has a roller PR425b in contact with the cam R415b, and rotates clockwise. Therefore, pinch roller R420
b does not press the magnetic tape 150 against the capstan R435b and has no involvement in the running of the magnetic tape. Next, the cam plate head 404 slides in the direction of arrow F, and the bin CH
Plate director 430 engaged with 422 rotates clockwise. The cam DR436a moves the plate lever idler 440 against the biasing force of the spring PL459 to move the plate lever idler 440 to the bin PL-F44.
1a is slid and locked in the direction of arrow PL. As a result, the raised pins LL451 and CC452 of the lever idler 450 that are engaged with the long grooves of the plate lever idler 440 are rotated counterclockwise, and the cam plate idler 210 is moved to the substantially thick end in the direction of the thick arrow PL. Located in In this state, the motor 101 rotates counterclockwise. Therefore, as shown in FIG. 6, the main belt 170 and idler belt 180, which are hooked on the motor pulley 102 provided on the motor shaft 190, also rotate counterclockwise. As a result, the flywheel F470a and the flywheel R470b on which the main belt 170 is attached also rotate counterclockwise. Therefore, the capstans 435a and 435b also rotate counterclockwise, and the magnetic tape 150 runs in the direction of the white arrow F in FIG. The magnetic tape 150 fed out by the capstan F435a is written on the reel rest F201a made of the members shown in FIG. Reel rest F201a writes magnetic tape 150 I
The situation is as follows. An idler belt 180 shown in FIG. 6 is hung around the pulley 310 of FIG.
Pulley 310 rotates in the same counterclockwise direction as motor 101. Gear idler P press-fitted into this pulley 310
L314, the third FF base 3 which is pressed against the pulley 310 via the second felt 3 by the elastic force of the spring FF base 315, and the gear idler FF340 which is press-fitted into the third FF base 3. Rotate counterclockwise. At this time, the gear PL320 meshing with the gear idler PL314 has a spring PL22.
2 generates a clockwise rotating force, while the idler base PL220 is given the same counterclockwise rotating force as the pulley 310. Similarly, gear FF
330, a force to rotate clockwise is generated by the elastic force of spring FF335, and the idler base F
F230 tries to rotate counterclockwise. However, if the cam plate idler 210 is positioned on the arrow PL side in FIG.
is located between the narrow grooves of the cam FF208. This results in
Rotation of idler base FF230 is blocked and gear FF
330 is reel rest F201a, reel rest R2
It is locked at approximately the middle position of 01b and cannot be engaged with either of the wheels. On the other hand, idler base PL
The bin PL205 of 220 is located at the wide portion of the cam PL206 and rotates in the same direction as the rotation of the pulley 310. FIG. 8 is a plan view showing how the gear PL meshes with the slip gear of the reel rest F, and is a partially enlarged view of FIG. 4. As seen from FIGS. 7 and 8, the rotation of the motor 101 passes through each member to the reel rest F20.
1a. Here, gear PL320
Both the slip gear 250 and the slip gear 250 are gears, and depending on the manner in which they mesh, they can generate abnormal noises and
gK tape may be wound unevenly. This point must be taken into consideration in a magnetic tape re-loss device that combines a large number of members. Therefore, in order to ensure meshing between the gear PL320 and the slip gear 250, in this embodiment, a corner F224. The main base 100 includes a corner R223 (see Fig. 2A), and a pawl F185aa and a pawl R185b that contact each other and make it possible to finely adjust the meshing of the gears.
The transmission path of the rotational force from the motor 101 to the reel rest 201 is as shown in FIG. 7. Next, the R reproduction operation of the magnetic tape will be explained. However, R playback requires capstan R435b and pinch roller R.
420b are in pressure contact with each other. FIG. 9 is a plan view showing the mode during R reproduction. In FIG. 9, during R playback, the sub-bass 10
The drive arm 104 is rotated counterclockwise by a drive motor (not shown) provided at the bin DA10.
6 is locked at the R position. In conjunction with this operation, the link cam 107 similarly rotates counterclockwise, and at the same time, the cam plate head 404 is positioned almost at the end in the direction of arrow R in FIG. At this time, there is a gap between the roller H431 and the cam H421, and the base head 432 is slid and locked at a predetermined position for magnetic tape reproduction by the biasing force of the spring bed 434. Roller PF425a is cam F415a
Since the pinch roller F420a is rotated counterclockwise, it has no involvement in the running of the magnetic tape. On the other hand, pinch 0-5R420b is o-ra PR425
b. i*m is generated between the J-cam R415a and the magnetic tape 150 is pressed against the capstan R435b by the rotating force urged in the counterclockwise direction. Next, the cam plate head 404 is located at the terminal end in the direction of arrow R in FIG. 9, and the plate direct 430 engaged with the bin CH422 rotates counterclockwise. Standing bottle PLR4
41b is slid and locked in the direction of arrow PL against the biasing force of spring PL459. The position of the plate lever idler 440 at this time is the same as when playing the magnetic tape 150 (in the direction of the white arrow F (forward direction)). Therefore, the cam plate idler 210 is located approximately at the ta end in the PL direction of the thick arrow. During R reproduction, the motor 101 rotates clockwise in order to bring the pinch roller R420b into pressure contact with the capstan R435b and to run the magnetic tape 150 in the direction of the white arrow R. Therefore, reel rest R201
b also rotates clockwise, as described below. Referring to the first leap, FIGS. 5 and 7, the motor 10
1 rotates clockwise, pulley 310 . Gear idler PL314. It can be seen that gear idler FF340 rotates clockwise together. Gear idler PL314
The elastic reaction force of spring PL222 generates a counterclockwise rotational force on gear PL320 that is meshed with gear PL320, and the same clockwise rotational force as pulley 310 is generated on idler base PL220. Similarly, a force to rotate the gear FF330 in the counterclockwise direction is generated by the elastic force of the spring FF335, and
The idler base FF230 attempts to rotate clockwise. FIG. 10 is a diagram showing how the gear PL meshes with the reel rest R, and is a partially enlarged view of FIG. 9. 1st
As seen from Figure 0, the bin FF207 of the idler base FF230 is connected to the cam F of the cam plate idler 210.
The bin PL205 of the idler base PL220 is located at the wide part of the cam PL206. As a result, the idler base PL220 and gear PL rotate in the same clockwise direction as the pulley 310.
320 is the slip gear 250 of the reel rest R201b
, and the magnetic tape 150 can be wound up. Also, as in the case of regeneration, in order to bring gear PL320 and slip gear 250 into predetermined meshing, corner R223 of idler base PL220 is
It is made to come into contact with a claw R185b provided at 0. In addition, in the above description, the pinch roller 420a
A drive motor is used to switch the L' winder roller R420b, and the other motor runs and winds the magnetic tape. This allows the drive motor to be used not only as a drive source for switching the pinch rollers, but also for automatic suction of the cassette case, setting for playback, and automatic ejection. The purpose is to change the running direction of the magnetic tape by changing the direction, and to eliminate the members involved in this process. However, the rotation control system of the motor 101, the transmission path of the rotational force from the sub-motor to the drive arm, and its operation control system do not constitute a part of this invention. Further, by disposing the motor 101 in a position directly facing the magnetic head 101 with the cassette case in between, the influence of the motor 101 on the flywheel F470a and the flywheel R470b becomes equal. 1LLL 1 color FIG. 11 is a detailed cross-sectional view showing the transmission path of the rotational force from the motor to the reel rest during fast forwarding of the magnetic tape. However, the playback operation in the reel rest drive device <W
Parts for constant speed running of the 1-ki tape are omitted. First, referring to FIG. 11, the rotational force transmission operation during rapid forwarding will be described. Rotation of the motor 101 is transmitted from the motor pulley 102 to the pulley 310 via the main belt 180. The rotation speed of the motor 101 is determined by the motor pulley 102 and pulley 310.
is slowed down by the ratio of the diameters of This pulley 310
To do this, use the elastic force of the spring FF base 315 to
The third F base 3 is pressed into contact with the second felt 3. In addition, the gear idler FF34 is installed on the third FF base 3.
Since O is press-fitted, the rotation of the pulley 310 causes the FF base 3 3rd degree gear idler FF340 to rotate at the same time via the second felt 3, and its rotational force is transmitted to the gear FF3.
30 to the reel gear 260 of the reel rest device. Since reel gear 260 and reel rest 201 perform the same rotation, the rotation speed of reel rest 201 is determined by the pitch diameter ratio of reel gear 260 and gear idler FF 340. The reel gear 260 is press-fitted into the reel rest 201, and the magnetic tape 15
For zero winding, the reel gear 260 and the reel rest 201 perform the same rotation. The reason why the second felt 3 is used is that when the magnetic tape 150 is written down, the second part of the felt 3 operates a slip mechanism to reliably detect the end of the magnetic tape and protect each member. It is desirable to prevent slippage from occurring when winding the magnetic tape. Therefore, it is desirable to separately provide the winding torque for regeneration and the winding torque for early spring, and to set the winding torque for single winding to a high value. FIG. 2 is a diagram showing how the magnetic tape is fast-forwarded in the direction of the white arrow F (forward direction) in the tape player in which the various members shown in FIG. 4 are arranged. The operation of each member during tape fast forwarding will be described below with reference to the second factor. 106 is connected to the bin D of the drive arm 104 by a drive motor (not shown) provided on the sub-base 103.
Or it is rotated from position F to position C and locked. The detection of the positions R1C and F of the bin DA106 is performed by installing a cam (not shown) that rotates the drive arm 106.

[Performed by a sliding switch.] However, the detailed information on this position detection does not constitute this invention. When the bin DA108 is locked at position C, the bin LP108 of the link PR107 engaged therewith rotates the link cam 402. Next, the pin LC403 of the link cam 402 locks the cam plate head 404 at a midpoint C between arrows F and R. At this time, the head roller H43 provided on the base head 432
1 is a spring head 43 along the slope of the cam H421.
It moves against the urging force of cam H421 and is locked at the top of cam H421. As a result, the magnetic head 151 is slightly retreated from the reproduction position, so that a large drag force is not generated when the magnetic tape 150 is wound quickly. Although FIG. 2 shows a mode in which the magnetic head 151 is brought into contact with the magnetic tape 150 to enable detection of the music tape's track interval, depending on the shape of the cam H421, the magnetic head 151 may be in contact with the magnetic tape 150.
It is also possible to completely separate the magnetic head 151 from the magnetic head 50. In addition, roller PF425a of pinch roller F420a and roller PR of pinch roller R420b
425b are the cams F41 of the cam plate head 404, respectively.
5a and cam R415b, pinch roller F4
20a is separated from the capstan F435a, and the pinch roller R420b is separated from the capstan R435b, so that they do not take any part in the rapid forwarding of the magnetic tape. Next, since the cam plate head 432 is locked at the 0 point of the arrow, the cam DR430 that is engaged with the bottle CH422 planted on the cam plate head 432 is also locked at the midpoint of the rotation range. do. At this time, the bin PLF 441a provided in the plate lever idler 440 is
On the other hand, the pin PLR 441b abuts against the cam DR436b, and the plate lever idler 440 is thereby slidably locked in the FF direction of the arrow by the biasing force of the spring PL459. Accordingly, both the pin LL451 and the pin CC452 of the lever idler 450 engaged with the long groove of the plate lever idler 440 rotate clockwise, and the cam plate idler 210
is locked at the end of the thick arrow in the FF direction. In this state, the motor 101 is rotating counterclockwise in order to move the magnetic tape 150 in the direction of the white arrow F in the figure (high speed running). At this time, flywheel F4
70a and the flywheel R470b are both rotating counterclockwise, but as mentioned above, the pinch roller F
420a and the pinch roller R4201) are not pressed against the capstan F435a and the capstan R435b, so they have no influence on the early number of the magnetic tape 150. Therefore, early springing of the magnetic tape 150 is performed by the rotational force of the reel rest F201a. When the reel rest F201a is driven to rotate, the pulley 310. Gear idler FF340. Gear idler PL314 is rotating in the same counterclockwise direction as motor 101. Further, as gear PL320 and gear FF330 rotate clockwise, idler base PL220 obtains clockwise rotational force due to the elastic force of spring PL222, and spring F
The idler base FF230 obtains clockwise rotational force by the elastic force of F335. As can be seen from FIG. 2, the cam plate idler 210 is locked on the side of the thick arrow FF, and the idler base PL220 (7) and the bin PL205 are located between the narrow grooves of the cam PL20617). Rotation is prevented, and gear PL320 is locked at a substantially intermediate position between reel rest F201a and reel rest R201b, and cannot mesh with either reel gear. Also, the bin FF of idler base FF230
Reference numeral 207 is located at the wide portion of the cam FF 208 and rotates in the same direction as the rotation of the pulley 310. This state is the third
Although it is best shown in the figure, the portion for constant speed running of the magnetic tape is omitted in FIG. As a result, as shown in FIG. 3, the gear FF330 meshes with the reel gear 260 of the reel rest F201a, and the rotation of the motor is reliably transmitted to the reel rest F201a via each member. At this time, the rotational force transmission path is the first
As shown in Figure 1. It is well known that when the gear FF 330 and the reel gear 260 of the reel rest F201a are engaged with each other, both rotate at high speed, and even a slight misalignment of the gear FF 330 and the reel gear 260 of the reel rest F201a causes a large abnormal noise. Therefore, in this embodiment, as best seen in FIG.
A stopper pin 234 is installed on the idler base FF230 and is brought into contact with the end of the stopper F191 provided on the main base 100, thereby making it possible to adjust the engagement. Twenty-two Otsu! In the manner in which each member is locked and rotated as shown in FIG. 2, when the motor 101 is rotated clockwise, the main belt 170 causes both the flywheel F470a and the flywheel R470b to rotate clockwise. However, as in the case of FIG. 2, it is not involved in the running of the magnetic tape 150 at all. However, the pulley 310 rotates clockwise due to the idler belt 180, and the gear idler P
L314. The gear idler FF340 also rotates clockwise. Therefore, gear FF330 rotates counterclockwise, and idler base FF230 rotates clockwise due to the elastic force of spring FF335. Figure 14 shows the motor rotating clockwise and reel rest R.
FIG. 3 is a plan view showing a state in which the spring is removed clockwise. As seen in FIG. 14, the gear FF330 meshes with the reel gear 260 of the reel rest R201b, and the rotation of the motor is reliably transmitted to the reel rest 201b via each member. At this time, as shown in FIG. 3, and as in early spring, gear FF330 and reel rest R201b
In order to properly mesh with the reel gear 260,
Stopper bin 2 installed on idler base FF230
34 comes into contact with a claw R192 provided on the main base 100 to ensure proper engagement. As described above, early spring removal of a magnetic tape is achieved by locking the drive arm 104 at the zero point by the drive motor (not shown) and moving the head roller H431 of the base head 432 to the cam plate head, regardless of the magnetic tape playback direction. 4
This is possible by holding it on the top of the 04 cam H421. Further, when the motor 101 rotates counterclockwise, the reel rest F201a picks up the magnetic tape early,
Conversely, when rotating clockwise, reel rest R201
b removes the magnetic tape in early spring. In the above description, gear idler PL314 and gear idler FF3 provided so as to be directly connected to pulley 310 are used.
I changed the pitch circle of 40 and used the magnetic tape as an early spring pick-up, but book #7!111. : By changing the speed of the motor 101, even higher speed winding is possible. Although not shown, the rotational speed of the motor 101 is switched by a switch linked to an operation button and a 111111 circuit. Furthermore, as described above, the second contact surface between the pulley 310 and the felt 3 is made to slip in order to protect each member when the magnetic tape is quickly removed. 22 otomaru 11! FIGS. 15A to 15C are diagrams showing a method of detecting the end of a magnetic tape. FIG. 15A is a configuration diagram of tape end detection using a reel rest device, in which the emitted light from the photo interrupter 290 passes through the detection hole provided in the reel gear 260 and hits the slip gear 250, and the weak reflected light is FIG. 7 is a partial diagram showing a state in which the light receiving element of the auto-interrupter 290 is reached. @ In figure 15A, the slip gear 250 is the Ig! for magnetic tape playback. Even at extreme times, the motor 101 constantly rotates (see FIG. 7).In order to efficiently absorb the emitted light from the photo interrupter 290, it is preferable to use a member with low reflectance. is composed of a black member.The reel gear 260 is press-fitted into the reel rest 201,
Tape I during playback and fast forwarding of magnetic tape 150
Rotation stops at the I end. In order to reliably reflect the emitted light from the photo-interrupter 290, this reel gear 260 uses a material with high reflectance, preferably a white member, and has equal holes for passing the emitted light from the photo-interrupter 290. Multiple pieces can be placed in the corners. The photointerrupter 290 includes a light-emitting element that emits light and a light-receiving element that senses the light that hits an object and is reflected. The substrate 291 is disposed on the bottom reel 240 and is an insulating member having a conductor on its surface. FIG. 15B shows that the part of the reel gear 260 in FIG. 15A where the hole is not provided is located above the photointerrupter 290, and the emitted light from the photointerrupter 290 reaches the light receiving element of the photointerrupter with almost the same intensity.
FIG. FIG. 15C is a diagram showing a state in which the reel gear 26011 body is viewed from below, and eleven holes are provided at equal intervals through which light emitted from the photointerrupter 290 passes. Next, the tape II end detection operation will be explained. 15th C
When the reel gear 260 with the holes shown in the figure is provided on the reel rest II, during magnetic tape playback, the slip gear 250 receives the rotation of the motor 101 and the spring reel 249 receives the rotation of the motor 101. The reel 1 nost 201 rotates due to l1111I torque on the surface of the felt 245 due to the elastic force. At this time, in order to wind up the magnetic tape 150 without loosening it, the slip gear 250 rotates faster than the reel rest 201. The felt 245 smoothly absorbs this difference in rotational speed. On the other hand, a reel gear 260 is press-fitted downward into the reel rest 201, and both rotate at the same time. Therefore, reel gear 260 and slip gear 250 always have different rotational speeds. Here, as shown in FIG. 15A, the reel gear 260
When the photo interrupter 290 is disposed below the photo interrupter 290, the light receiving element of the photo interrupter 290 will sense weak light in the case of FIG. 15A, and strong light in the case of FIG. 15B. established etc. 11
Combined with the holes in the corners, it becomes possible to extract the intensity signals of the continuous light. Now, when the magnetic tape 150 becomes Ill, the slip gear 250 is rotating, but the reel rest 2o1 and the reel gear 250 are in a stationary state. At this time, the light receiving element of the photointerrupter 290 receives a single intensity of light depending on whether or not there is a hole in the reel gear 260 above it. By detecting the change from this continuous light intensity signal to a single intensity optical signal, it is possible to detect the end of the tape in the magnetic tape playback state. During fast forwarding of the magnetic tape, the gear FF 330 of the reel rest drive device 300 and the reel gear 260 are engaged (see FIG. 11), and the fact that continuous light intensity signals are obtained from the photo interrupter 290 is similar to when playing back the magnetic tape. The same is true. Further, when the magnetic tape reaches the end of 150 dollars, the reel rest 201 and the reel gear 260 become stationary, and the pulley 310 slips and rotates on the second surface of the felt 3. At this time, the slip gear 250 is not making any movement and is in the same stationary state as the reel rest 201. Therefore, in this case as well, the light-receiving element of the photo-interrupter 290 receives light of a single intensity, and as in the case of reproduction, it is possible to move the magnetic tape 150 across the tape at its end during fast-forwarding. In order to ensure the operation of these detection means, a reel gear 260 that rotates in the same manner as the reel rest 2°1 is provided on the photo-interrupter 290 side, and a plurality of equally spaced holes are provided, and the firing of the photo-interrupter 290 is A white member is provided to reflect light strongly. Further, the slip gear 250 is made of a black material so as to absorb this emitted light well. . Effects of the Invention As described above, the reel rest drive device according to the present invention operates through one of the first and second rotation systems provided on the rotating body shaft that directly receives the rotational force from the motor and rotates. The rotational force is transmitted to the reel rest. Therefore, it is possible to centralize each functional component of the reel rest device, and the configuration of the device can be made space-saving and compact. In addition, since the rotational force is directly received from the motor and transmitted to the reel rest, it is not affected by the flywheel that rotates the capstan, making it possible to improve performance such as wah. . Furthermore, since a friction body is provided to transmit rotational force to the reel rest, each member can be protected at the end of the tape, etc. Furthermore, since the spring (elastic body) applies force to the second rotating body via the washer, there is no negative effect (torsional vibration, etc.) due to the spring, and the second rotating body is rotated by the friction torque from the friction body. You can receive the power reliably.

[Brief explanation of drawings]

FIG. 1 is a detailed sectional view showing the configuration of the reel rest drive device. FIGS. 2A and 2B are diagrams showing the structure of the idler base PL of the reel rest drive device. 3rd A
3B and 3B are diagrams showing the structure of the idler base FF of the reel rest drive device. FIG. 4 is a plan view showing am during playback of a tape player according to an embodiment of the present invention. FIG. 5 is a detailed sectional view showing the configuration of the reel rest device. FIG. 6 is a diagram showing a path for transmitting the rotation of the motor to the reel rest drive device and the capstan. FIG. 7 is a diagram showing a transmission path of the rotational force of the motor to the reel rest device when the tape runs at a constant speed. FIG. 8 is a partially enlarged view of FIG. 4. Figure 9 is R
FIG. 7 is a plan view showing *m+ of the tape player during playback. FIG. 10 is a partially enlarged view of FIG. 9. 11th!
FIG. 11 is a diagram showing a transmission path of the rotational force of the motor to the reel rest device when the tape runs at high speed. FIG. 2 is a plan view showing the state of the tape player when running at high speed. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 14 is a partially enlarged view showing the state of the tape player when running at R high speed. Figures 15A to 15C are diagrams showing the mode of detecting the end of the tape. Figure 15A shows the case where the hole in the reel gear is located above the 7-oto interrupter, and Figure 158 shows the case where the reel gear has no hole. FIG. 15C is a plan view showing the structure of the reel gear, showing the case where the portion is located above the photointerrupter. FIG. 16 is a plan view showing the configuration of a conventional tape player. FIG. 17 is a plan view showing the main parts of a conventional tape player during forward playback. FIG. 18 is a plan view showing the main part of the main part of the conventional tape player when reversing the tape in the reverse direction. FIG. 19 is a plan view showing the main part of a conventional tape player in the S-shape during playback in the reverse direction. FIG. 20 is a plan view illustrating the main part of a conventional tape player when returning the tape in the forward direction. FIG. 21 is a sectional view showing a rotational force transmission path when a tape runs at high speed in a conventional tape player. FIGS. 22 and 23 are diagrams for explaining the tape fast forward operation in a conventional tape player. FIG. 24 is a side view of a tape running direction detection switch portion in a conventional tape player. FIG. 25 is a diagram showing electrical connections of main parts in a conventional tape player. In the figure, 100 is the main base, 101 is the motor,
102 is a motor pulley, 170 is a main belt, 180
is an idler belt, 200 is a reel rest device, 201
．． 201a and 201b are reel rests, 210 is a cam plate idler, 220 is an idler base PL, 22
1 is the shaft PL, 230 is the idler base FF 23rd
1 is a shaft FF, 241 is a shaft reel, 245 is a felt, 250 is a slip gear, 260 is a reel gear, 300 is a reel rest drive I'll, 301 is a shaft idler, 310 is a pulley, 3 is a felt, 3 is a third is FF base, 315 is spring FF base, 31
6 is a washer, 320 is a gear PL, 330 is a gear FF,
340H#t Phyto5FF. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Masu Oiwa Yusuke/Kunijlmu301: Vq114id 5 210
：Ah-γni-) Finished it°F31o゛ A1-
220: 74 doors”: J P
L3 2nd: 7x Ruto 230゛ End (Dofu\'-SFF3 3rd: FF Go-S
221・Nsaki 7) PL314: M-v-Fiddler-340: (″r-74 Tochi FF320 Key-PL 231: SeaP7 FF330: N-v-FF 315:
Also 7"i>7-day"'nee λ 316: ')・
tVqA 24th 8ε 205 Hi 6 PL 223: Corner R 3rd A! ] 234, St-/l-g-C-n 207゛hi-1-in FF 56 230: yidku N-su 2nd r mouth Counterclockwise i direction clockwise i self 101 7-9-220: Fierce Vr pace train 1
02: 1-W-A'/201
a, 201b: ') -) L, L strike 18o: Aitra (ruto) 205: b"n PL18
5a: 9F 32
0: Ki” Finish-PL185b: 4R 210: Cam 7”L-) Eye 1゛U206: Force A
PL 20B+ 274FF N2nd 101, 7-? -102:E-7-7'-Riichi/θen 101: Motor 18
5a, 185b: Phantom m@IfIfi~1o2: Mo9-7'-ノ 205: C-n PL180: Complete Idol Belt 2
06: Z14PL201a, 201b: Reel L strike 207: This FF210: Sword/
,7'! - Toryoidhu 2o8: Cam F
F220: Fi1-N-S PL 223: Corner R 320: Steam "y-PL '372 + Nagi 205: Bin 9 PL 210
- η Mude 1-Tofiddler 206, Cam PL
201a Reel 1st F207: Pin FF 234: Sto y/ゞ-1
208° cam FF 201a 201b' Reel rest 330
; ~”, -FF207: Pin FF 208: Car FF 234: Stoppe Pin 191: St.
) 201a, 201b: Reel rest, 2
07: and °7FF, 208: Cam, FF2
34: Matato call I\-pin, 330: 4”A F
F191' 1-)--tl knee F192: Sto-/lmer R No. i5A cause name/Evening 3 Figure 7501 7 Otsu B 1゜4υ North 4j Procedural amendment (voluntary)

Claims (2)

[Claims] (1) A reel rest drive device for rotationally driving a reel rest for winding up a tape-shaped recording medium by obtaining rotational force from a drive source, the device comprising: a first support shaft; and the first support shaft. a first rotary body having a shaft portion that is loosely fitted to the shaft portion and rotates about the first support shaft in response to rotational force from the drive source; the first shaft portion;
A second rotating body that is disposed facing the rotating body and rotates about the shaft of the first rotating body, and a second rotating body that is disposed between opposing surfaces of the first rotating body and the second rotating body. a friction body that transmits the rotational force of the first rotating body to the second rotating body; and a friction body that is coupled to the shaft of the second rotating body and rotates the second rotating body about the second rotating body shaft. a first gear that rotates in the same manner as the body; and a first control plate that is rotatably disposed between the second rotating body and the first gear with the first rotating body shaft as an axis. a second support shaft installed at a predetermined position on the first control plate; and a second support shaft that meshes with the first gear and rotates about the second support wheel to rotate the first support shaft. a second gear for transmitting rotational force to the reel rest; a second gear coupled to the first rotating body shaft so as to face the first rotating body; A third gear that rotates at the same time as the rotating body, and an elasticity that is provided between opposing surfaces of the second rotating body and the third gear, and whose elastic force presses the second rotating body against the friction body. the first rotating body between the first rotating body shaft end and the third gear;
a second control plate rotatably disposed about the rotating body shaft; and a third control plate installed at a predetermined position of the second control plate.
a support shaft; and a fourth gear that meshes with the third gear and rotates about the third support shaft to transmit a second rotational force to the reel rest. Device. (2) The reel rest drive device according to claim 1, wherein the elastic force of the elastic body is applied to the second rotating body through a washer.