JPH0469847A - Reel shaft driving device for tape recorder - Google Patents

Abstract

PURPOSE:To obtain a reel shaft driving device having a simple constitution by displacing a transmission gear in the axial direction to switch the transmission path of a rotating force in accordance with the fast-forwarding operation and the reproducing operation. CONSTITUTION:When a motor starts rotating, a turning arm 9 is turned and displaced clockwise through a driving gear 8 and an epicyclic gear 10, and the epicyclic gear 10 is engaged with a transmission gear 17. Consequently, rotation of the motor is transmitted to a reel shaft 1, and it is rotated counterclockwise at a high speed to perform the fast-forward operation or the rewinding operation. When the reproducing operation is performed, the motor starts rotating, and a control lever 15 is slided and displaced to the operating position in the direction of an arrow A, and the transmission gear 17 is pressed and displaced in the direction of an arrow D and is engaged with a reproducing driving gear 12. Consequently, the rotating force of the reproducing driving gear 12 is transmitted to a reel gear 3 through the first transmission gear 17, and the reel shaft 1 is rotated counterclockwise. Thus, the constitution is simplified because the transmission gear is displaced in the axial direction to switch the transmission path of the rotating force in accordance with the fast-forwarding operation and the reproducing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION B) Industrial Application Field The present invention relates to a data recorder, and more particularly to a reel shaft drive device for running a magnetic tape.

(Example) Conventional technology A sound device called a headphone stereo, which allows you to listen to the playback sound of a magnetic tape using headphones, is in widespread use. A reciprocating type radar is common that has a reproducing function not only in a first direction but also in a second direction, which is the opposite direction to the first direction, so that the reproducing operation can be performed. Such a reciprocating day play 1
The driving operation of the reel shaft in Goo is the first reel shaft driving operation that performs the reproducing operation and forwarding operation in the 17j direction, and the second reel shaft driving operation that performs the reproducing operation and fast forwarding operation in the second direction.
There is a drive movement of the reel axis. A second example of such a reciprocating cassette type cheaple drive device for the knoll shaft in Goo is disclosed in, for example, Japanese Patent Application Laid-Open No. 60-83245.

(c) Problems to be Solved by the Invention The technology disclosed in the above-mentioned publication No. 1 is a method for driving a magnetic wave to travel, regenerating a reel shaft, and performing a feed drive operation. There is a problem in that the structure becomes complicated due to the large number of teeth.The present invention aims to provide a reel shaft drive device with improvements in these points. □−rumono (゛oru.

(d) One-stage reel shaft drive device of the present invention to solve the problems $1.1. A planetary gear rotates coaxially with the planetary gear. A regeneration drive gear which is attached to the opening and the rotation of the planetary gear is transmitted through a clutch mechanism at ℃, and a control system that slides 41 degrees from the operating position to the operating position during the regeneration operation. t, the bar is always in mesh with the reel gear formed on the reel shaft (if there is one), and the bar is displaced in the direction of the axis 1i by the displacement of the bar. It consists of transmission teeth that mesh with the internal teeth or the regeneration drive gear.

The present invention provides reel teeth 11 (C) formed on the reel shaft.
By displacing and tightening the transmission gear, which is always in mesh with the drive gear, in the direction of the axis J, the transmission path of the rotational force obtained from the drive gear is adapted to the feed motion and +Ii raw motion. 7- It's like a switching dog (, something ().

(f) The drawings relate to the reel and shaft drive device of the present invention, and Fig. 1 shows the stopped state - 4 Y-plane view of the main parts, and Fig. 2 shows the feeding state.゛V side view of the section, Figure 3 is A- of Figure 2.
A' side side view Figure 4 is a plan view of the main parts showing the re'+- state, Figure 5 is a 11-B' side side view of Figure 4. ) is the first reel shaft which is rotatably attached to the fixed substrate <2) and drives the magnetic 1-wave in the first direction, and the reel gear (3) is integrally formed with the first reel shaft. has been done. (4> is the fixed board (
2) is rotatably attached to the magnetic j-
The opposite force in the 1st ′jy direction is ``White Via''! ,) Second direction・＼
This is the second reel shaft that drives the automatic rotation, and the reel gear (5) is integrally formed. (6) is attached to the fixed base board 2) by the shaft (7) for rotation. The rotation of the electric motor (1↓ not shown) is transmitted by an E transmission 9 through a belt, and the electric motor is accompanied by forward/reverse operation L when driving the magnetic tape in the first direction and the second direction. The structure 3 is configured to be driven simultaneously in the J1 direction and the counterclockwise J direction. <8) is the above boo
The drive gear (9) is mounted so that it can rotate by 1.1 degrees about the shaft (7) of the drive gear (8) as a rotation fulcrum. The rotary arm 5, (10) shown in FIG. (8) is a planetary gear that is always in mesh with the drive gear (8), and is configured to revolve around the drive gear (8) by the rotational force of the drive gear (8). (11) is a regeneration drive gear rotatably attached to the regeneration drive gear; (13) is a friction material such as C-colored fuel disposed between the regeneration drive tooth 1 pivot 12) and the planetary tooth center (10); (14) is a spring C that is wound around the shaft (11) and presses and biases the planetary gear <10) in the direction of the regeneration drive gear (12>); The drive gear (12) and the friction material (13) constitute a clutch mechanism. ＞ direction and the displaced operating position (=J) The first control bar is biased in the direction of the arrow (B) by the spring (] 6) and is biased in the direction of arrow (B). When the reproducing operation is performed in the first direction, the displacement is set to 0 by the operating illumination device and the operating position is held at +1 point.(17
) is rotatably mounted on a shaft (18) fixed to a fixed base plate (2).
C) The first transmission tooth is arranged to allow displacement in the (D) direction, and is always connected to the reel gear (3) formed on the first reel shaft (1). It is in a state of engagement. (19) is a spring that is wound around the shaft (18), and the first transmission gear 17) is connected to the arrow (
C) It has the effect of biasing in direction 2 and direction 4. 20) has a first switching member -r' attached to the first control bar <15) in IIF, and the first control switch (15) is in the operating position in the direction of arrow (A). Displace (7 When hit + 'ii) From the first position where the first transmission gear (17) is 7R in Figure 3,! Ring (19) I1 Force C Resistance IT - 5th As shown in the figure, it has the action of displacing and inserting into the second position shown in FIG.
) is in a state of meshing with the planetary tooth shaft (10) marked 1.i when it is in the first position, and is in a state of meshing with the regeneration drive tooth weight (12) marked 011 when it is in the second position. (21'
) is placed on the fixed board (2) by a sliding displacement Tf between the non-operating position shown in Fig. 1 and the operating position displaced in the direction of arrow (A). Spring Park 2
According to 2), the second control unit is biased in the direction of the arrow (B)i10hJ, and is displaced to the operating position during the regeneration operation in the second direction. (23) is fixed to the fixed substrate (2) and is rotatably mounted on the shaft (24) located at the operating position. , !: also in the axial direction, i.e. arrow (
c) (I) > direction/＼displacement (□1(-t) is located in the 6 second transmission teeth, and is formed on the second reel shaft (4). - The first transmission gear (17) is in constant mesh with the gear tooth center (5) for
Similarly, it is urged in the direction of arrow (C) by a spring (not shown). (25) is the second control lever (
21), which is a second switching member attached to the second switching member;
The control bar (21) is displaced to the operating position in the direction of the arrow (A), and when set, the second transmission gear (23)
The reel shaft drive device of the present invention has the function of displacing the second position i where it meshes with the reproduction drive gear (12) from the first attachment position where it meshes with the planetary tooth (10). is constructed, and its operation will be explained next.

711.-, , :y-When the Boo is in the state of performing the reproducing operation in the first direction, the fast-forward operation, the arp, If the coder is in the state of performing playback operation in the second direction, 3
The drive operation that becomes the rewinding operation will be explained in the following. When the motor is stopped (as shown in FIG. 1), tR is supplied to the motor and the motor starts rotating. When the electric motor starts rotating, the rotation activates the belt and generates 7 booleys (6)
communicated to. 6) is rotated clockwise. iif When the wheel (6) rotates clockwise, the drive gear 8 which is externally rotated with the 1L-(6) rotates clockwise. Rotation drive1. The rotational force is transmitted to the planet teeth (10) which are in mesh with the drive gear (8) due to the wetting. As a result, for the said J Jij, i city (10),
Since the force circulating around the drive tooth east (8) acts, the rotation y-j, 9> is clockwise (rotational displacement a), %I, and in such a state, Since the first transmission tooth center <17) is in the first position where it meshes with the planetary tooth center <10>, when the rotation A in iii. As shown in Fig. 6, the middle planetary tooth (10) is in mesh with the first transmission tooth (17).
(, the rotation of the electric motor is caused by the pulley <6), the drive gear (8>,
The signal is transmitted to the first reel shaft (1) via the planetary gear (10), the first transmission gear (17), and the reel gear (3), and the first reel shaft (1) moves counterclockwise at high speed. Rotate 1.
Therefore, fast forwarding or rewinding of the magnetic tape is performed.

The high-speed driving operation of the magnetic tape in the first direction by the first reel shaft (1) is performed as described in 1-7 below. Next, the reproduction driving operation of the magnetic lazo in the first direction will be explained. When the regeneration operation is performed in the first direction, power is supplied to the electric motor and it starts rotating, and the first control is performed and the bar (15)
is slid to the operating position in the direction of arrow (A) against the biasing force of the spring 16). When the first control lever (15) is slid into the operating position shown in FIG. 1 transmission gear <17) with the arrow (
In order to suppress displacement in the direction D), the first transmission gear (1
7) is displaced and held at the second position where it meshes with the reproduction drive gear (12>).Then, when the pulley (6>) is rotated clockwise by the rotational force of the electric motor, the rotating arm ( 9> is rotated in the clockwise direction H. When the rotating arm 9) is rotated in the direction J1, the first transmission gear (17) moves to the second position where it meshes with the regeneration drive gear (12). Therefore, as shown in Figs. 4 and 5, the regeneration drive gear (12) is in mesh with the first transmission gear (17).When the drive gear <8) rotates in the clockwise direction, The planetary gear (10) in mesh with the drive gear 8) is rotated counterclockwise. When the planetary gear (10) is rotationally driven, the rotation is transmitted to the regeneration drive gear (12) through the friction material (13) constituting the clutch mechanism, and the regeneration drive gear (12) rotates counterclockwise. Rotationally driven. Therefore, the rotational force of the reproduction drive gear (12) is transferred to the rill gear (12) via the first transmission gear (17).
3), the first reel shaft (1) is rotated counterclockwise. When the regeneration operation in the first direction is performed in this way, the rotation of the electric motor is changed to the pulley <6), the drive gear (8), the planetary gear 10), the friction material (13), and the regeneration drive gear (1).
2), first transmission gear (17) and reel gear (3)
is transmitted to the first reel shaft <1), but this transmission operation has a lower rotational speed than the above-mentioned high-speed drive operation and is performed via a clutch mechanism, so it is not necessary for regeneration operation. The first reel shaft (1) will be driven in the first direction. However, when the stop operation is performed, the first reel shaft (1), which has not been locked in the operating position, will be driven. - The bar (15) is returned to the non-operating position shown in FIG. 1 by the biasing force of the spring (16). The first control lever (15
) returns to the non-operating position, the first control lever (15)
The first switching member <20) attached to the displacement 1-
Therefore, the first transmission gear (17), which had been displaced to the second position, is displaced to the first position in the E arrow (C) direction by the biasing force of the spring (19), and enters the zH stopped state.

The high-speed driving operation and reproduction driving operation of the first reel shaft (<1) are performed as described above, but next, the driving operation of the second reel shaft (4) will be explained. First, the second knoll axis 4)
When the boob recorder is in the state of playing back in the first direction, it is a rewinding operation, and when the day recorder is in the state of playing back in the second direction, it is a fast-forwarding operation. Explanation about 4-ru. When such an operation is performed in the stopped state shown in Figure 1, power is supplied to the electric motor and it starts rotating, but the direction of rotation is opposite to that of the drive operation of the first reel shaft (1) described above. become the direction. 11 When the motive starts rotating, the rotation is transmitted to the pulley (6) via the belt,
The pulley (6) is rotated counterclockwise. When the pulley (6) rotates counterclockwise, the drive gear (8), which is externally attached to rotate in the same direction as the pulley (6), is driven to rotate in the counterclockwise direction. ) is in mesh with the planetary gear (10
) rotational force is transmitted to the As a result, the planetary gear (1
Since a force revolving around the drive gear (8) acts on the drive gear (8), the rotation arm (9) is rotated counterclockwise. In this state, since the second transmission gear <23> is in the first position meshing with the planetary gear 10), when the rotation arm (9) rotates counterclockwise, the planetary gear (10) ) is brought into mesh with the second transmission gear (23). Therefore, the rotational impulse pulley of the electric motor (
6), the drive gear (8), the planetary gear (10), the second transmission gear (23), and the reel gear (5) are transmitted to the second reel shaft (4), and the second reel shaft ( 4) is rotated clockwise at high speed, so that the magnetic tape is rewinded or fast forwarded. The high-speed driving operation of the magnetic tape in the second direction by the second reel shaft (4) is carried out as described above. Next, the reproduction driving operation of the magnetic tape in the second direction will be explained. When the regeneration operation in the second direction is completed, power is supplied to the electric motor and it starts rotating, and the second control lever (21) is moved by the spring (22).
) is slid to the operating position in the direction of arrow (A>). When the second control lever (21) is slid to the operating position, the second control lever (21) Since the second switching member <25> attached to presses and displaces the second transmission gear (23) in the direction of arrow (D), the second transmission gear 23) is connected to the regeneration drive gear (12). They are displaced and held at the second position where they meet. Then, the aforementioned Sea J-
When (6) is rotated counterclockwise by the rotational force of the electric motor, the rotary arm (9) is rotated counterclockwise as described above. Said rotating arm (9)
When the gear rotates counterclockwise, the second transmission gear (23) is in the second position where it meshes with the regeneration drive gear (12), so the regeneration drive gear (12) engages with the second transmission gear (23). It will be in a state of engagement. Therefore, the rotation of the electric motor is caused by the pulley (6
), drive gear (8), planetary gear (10), friction material 13
), regeneration drive gear (12), second transmission gear (23)
and is transmitted to the second knoll shaft (4) via the reel gear (5), but this transmission operation has a lower rotational speed than the above-mentioned high-speed drive operation and is transmitted via the clutch mechanism. Therefore, the driving operation of the second reel shaft (4) for the reproducing operation is performed. The regeneration drive operation in the second direction is performed in this way, but when the stop operation is performed, the second control lever (21), which had been locked in the operating position, is moved by the biasing force of the spring (22) as shown in Figure 1. It is returned to the non-operating position. When the bar (21) returns to the non-operating position under the control of the navigation memory 2, the second switching member (25) attached to the second control lever (21) is displaced. The second transmission gear (23) is displaced to the first position in the direction of arrow (C) by the biasing force of a spring (not shown) and comes to a stopped state.

(g) Effects of the Invention The reel shaft drive device of the present invention is obtained by displacing in the axial direction a transmission gear that is always in mesh with a reel gear formed on the reel shaft. Is the rotational force transmission path 1'? Since the switching λ is made in correspondence with the feeding operation and the reproducing operation, the number of gears serving as the transmission means can be reduced and the structure can be simplified. Therefore, the present invention has been designed to reduce the size of the reciprocating force table with the function of reproducing it in the second direction, which is the opposite direction of the first direction, rather than in the first direction. has a very large effect.

[Brief explanation of the drawing]

The drawings all relate to the reel shaft drive device of the present invention.
The figure is a plan view of the main part showing the stopped state, Fig. 2 is a plan view of the main part showing the ψ and feeding state, Fig. 3 is a side sectional view taken along line A-A' in Fig. 2, and Fig. 4 is the playback state. FIG. 5 is a sectional view taken along line BB' in FIG. 4. Explanation of main drawing numbers (1)...First reel shaft, (2)...Fixed board,
(3)<5)...Reel gear, (4)...Second reel shaft, (6)...Pulley, (8)...Drive gear, (9)...Rotating ground 2, (10)...
・Planetary gear, (12)...Regeneration drive gear, (1
3)...Friction material, 15)...First control bar
(17)...First transmission gear, (20)...First switching member, <21)...Second control lever (2
3)...Second transmission gear, <25)...Second switching member. Figure 1

Claims (1)

[Claims] (1) A drive gear that is rotated when the magnetic tape is driven; a planetary gear that is always in mesh with the drive gear and rotates in the rotational direction of the drive gear; and a planetary gear that can rotate coaxially with the planetary gear. a regeneration drive gear which is attached to the reel shaft and to which the rotation of the planetary gear is transmitted via a clutch mechanism; a control lever which is slidably displaced from a non-operating position to an operating position during a reproducing operation; and a control lever formed on a reel shaft. a transmission gear that is always in mesh with a reel gear and is mounted to allow displacement in the axial direction, and when the control lever is in a non-operating position, the transmission gear is connected to the planetary gear. A reel of a tape recorder, characterized in that the transmission gear is held in a first position where it meshes with the reproducing drive gear, and when the control lever is in the operating position, the transmission gear is held in a second position where it meshes with the playback drive gear. Axial drive.