JPS6364663A - Recording/playback device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention applies to a tape drawn out from a tape cassette to a tape guide drum having a built-in transducer, such as a video tape recorder or a rotary head type digital audio tape recorder. Run it by winding it,
The present invention relates to a recording and reproducing device that records or reproduces signals.

BACKGROUND OF THE INVENTION In recent years, video tape recorders (VTRs) have become more popular as devices of this type.
When considering the use of a mobile device outdoors, such as a camera-integrated VTR, problems remain with not only the weight but also the size of the device itself.

However, the size of the mechanism in this type of device depends on the diameter of the tape guide drum and the tape winding means that rotates around it, due to the device principle of pulling out the tape from the tape cassette and winding it around the tape guide drum. Its basic planar dimensions are determined by the rotation range of the tape cassette and the size of the tape cassette used.

For example, an explanation will be given using FIG. 11, which schematically shows an example of "U loading" adopted in a Beta system VTR.
As shown in FIG. 11, the tape guide drum 101 is arranged at a predetermined position relative to the tape cassette 102. As shown in FIG. After that, the tape 1 stretched on the front surface of the tape cassette 102
03' is pulled out by a post 105 inserted into an opening 104 provided in the tape cassette 102. That is, the loading ring 106 on which the post 105 is erected rotates in the direction of the arrow 107, and as the loading ring 106 rotates, the tape 103 is pulled out to form a tape bus of the tape 103. In this case, the tape cassette 102
In addition to the distance between the tape guide drum 101 and the tape guide drum 101, even if they are designed to be close to each other, the post 105 and loading ring 106, which are tape winding means, always require a certain amount of rotation range, and these mechanisms This imposes a major restriction on miniaturization of the entire device including the housing portion (not shown) that envelops the entire device.

In this way, even if the relative positions of the tape guide drum and tape cassette are designed to be closer to each other, the tape winding system, which consists of posts, etc. that rotate around the tape guide drum and wind the tape, A rotation range of the rotation means is required, and the added dimension becomes the size of the entire device enclosed in the housing.

On the other hand, it has a tape winding means that rotates around the tape guide drum in a direction υ to wind the tape pulled out from the tape cassette around the tape guide drum, and after the tape winding means has rotated by a predetermined angle, The casing or an entry member linked to the casing enters into the rotation locus of the tape winding means, and in addition to this operation, the tape winding is performed to pull out the tape in order to pull out the tape cassette or tape. into the opening of the tape cassette into which the means are inserted;
It is conceivable that the operation of advancing the tape guide drum is also performed, and as a result, the entire apparatus including the housing section can be made smaller.

Problems to be Solved by the Invention In order to realize these problems, it is necessary to move the tape cassette at least relatively between the drum mounting section on which the tape guide drum is mounted and the housing section that mainly covers the drum mounting section. It is also necessary to allow relative movement between the cassette portion and the cassette portion that mainly covers the cassette placement portion on which the cassette is placed.

Furthermore, if the tape guide drum is to be moved into the opening of the cutter using tape force, it is also necessary to cause relative movement between the drum mounting section and the cassette mounting section. In this way, when multiple relative movements are performed simultaneously while maintaining a predetermined relative position, the υ load fluctuates due to dimensional errors in the movement direction during the movement process, making smooth movement extremely difficult, and sometimes , there was a problem that it became impossible to move. This is a particularly serious problem when the housing section and the mounting section, which are long in the direction perpendicular to the direction of movement, are simultaneously moved relative to each other.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a cassette mounting section for mounting a tape cassette, a drum mounting section for mounting a tape guide drum, the cassette mounting section and the A loading section guide means for guiding the tape cassette loading section in the direction of proximity and separation, a first body section provided corresponding to the cassette loading section, and a first body section provided corresponding to the drum loading section. a second housing section, a housing section guiding means for guiding the first housing section and the second housing section toward and away from each other in substantially the same direction as the guiding direction of the loading section guiding means; and the cassette loading section. Alternatively, an engagement that mainly engages between the drum mounting portion and the first body portion or the second body portion in the direction of approaching and separating the drum mounting portion and the cassette mounting portion. It is characterized by having a means for combining.

Effect The present invention has the above-described configuration, and allows the drum mounting section and the cassette mounting section to approach and separate in a predetermined direction, and to move the first housing section and the second body section provided correspondingly to each other. The approaching and separating movements in substantially the same direction as the predetermined direction between the two are guided by respective guiding means. At the same time, changes in the load during the relative movement process due to misalignment in the guiding direction, dimensional errors, etc. can also be caused by the difference between the drum or cassette mounting section and the first
Alternatively, compensation can be achieved by connecting the second housing parts through a retaining means that mainly engages in the direction of approaching and separating movements, and allowing movement in a direction perpendicular to this direction. However, it is possible to realize a smooth dimensional change of the entire device, which in turn makes it possible to downsize the entire device.

EXAMPLE Hereinafter, a first example of the present invention will be described in detail using the drawings.

2 to 4 show a tape cassette used in a recording/reproducing apparatus according to an embodiment of the present invention. Second
The figure is a perspective view seen from the top, and the tape 4 contained in the tape cassette 1 has both ends locked and wound on a pair of supply and take-up reels 2.3 (see Fig. 3), and is further wound on a pair of supply and take-up reels 2. As shown by the dashed line in FIG. 2, the tape cassette 1 is stretched on the front side by a pair of cassette posts 8. When the tape cassette 1 is not in use, the tape 4' stretched over the front surface thereof is covered by a front cover 5 and a back cover 6 which cover the tape cassette 1 from the front and front surfaces, respectively, by rotation.

FIG. 3 is a perspective view of the tape cassette 1 shown in FIG.
An opening is provided in the tape cassette 1 so that a post or the like can be inserted into the inside of the tape 4' stretched on the front surface and the tape 4' drawn out from the tape cassette 1. When the tape cassette 1 is used in the apparatus of this embodiment, it is provided in the apparatus, and when the tape cassette 1 is attached to the apparatus, it comes into contact with the side surface 5' of the front cover 5, and the front cover 5 is rotated. A moving lid opening means (not shown) opens the front lid 5 as shown in a side sectional view in FIG.

Note that the back cover 6 has a fulcrum support part 5' provided in a part of the front cover 5.
One end of the tape cassette 1 is rotated by being guided by a cam guide groove 7' provided on both side surfaces 7' of the opening 7 of the tape cassette 1. It is released along a predetermined trajectory shown by the dashed line in FIG. 4 without contacting the tape 4' stretched over the tape 4'. When the front cover 5 and back cover 6 are opened, Fig. 4: (
As shown, the tape is completely opened to a height corresponding to the thickness of the tape cassette 1, and enters into an opening 7 of a post, etc. (not shown) or a tape guide drum 9 (see FIG. 6), which will be described later. It creates space.

Next, the basic operation of an embodiment using this tape cassette 1 will be explained with reference to FIGS. 5 and 6.

FIG. 5 is a plan view showing the configuration of the tape cassette 1 installed in the apparatus. That is, the front cover 6 is in the state shown in FIG. At the same time when the back cover 6 is opened, a tension post 10,
82 boss 12, T1 post 13, T2 post 14, T
3 post 15° T4 post 16, T5 post 1 end, T end boss 19 and capstan 21 are inserted. On the other hand, a tape guide drum 9, an S1 post 1
1, a T6 post 18, and a pinch roller 20 are located.

The first housing section 22 corresponds to a cassette board 24 (see FIG. 1), which is a cassette mounting section on which the tape cassette 1 is mounted, and the drum mounting section on which the tape guide drum 9 is mounted. The second housing part 23 corresponding to the drum board 25 (see FIG. 1) is located at a position separated from the drum board 25 by a distance of one person in the figure. After this, tension post 1o1S1 post 1
1, S2 post 12, T6 post 18, T7 post 19
and pinch rollers 20 are indicated by arrows 10' and 1, respectively.
1'.

5th in the direction of 12', 1B', 19', and 20', respectively.
Start moving to the position indicated by the dashed line in the diagram. At the same time, the tape guide drum 9 also moves in the direction of arrow 9'.
In addition, TI, T2 .
T3 post 13, 14.15 is Ts, Te post 16,
It rotates in the direction of arrow 13' while moving in the direction of arrow 9' together with 17. The tape guide drum 9 is also stretched on the front surface of the tape 4 to the position shown by the dashed line in FIG.
It enters into the opening 7 beyond the stretched position of
During this time, the relative positions of the first and second workpieces 22 and 23 remain as shown in the figure. When the tape guide drum 9 reaches the moving position shown by the dashed line in FIG. T3 post 1
4.15, the tape guide drum 9 rotates in a space between the tape guide drum 9 and the second working part 23, which is obtained by the movement of the tape guide drum 9, drawing a predetermined locus. On the other hand, the T4 and T5 posts 16, 17 are stopped at predetermined rotational positions relative to the tape guide drum 9. As a result, each post 1o to 19 and the tape guide drum 9 lead to the supply reel 2 and the take-up reel 3. A tape bus of the tape 4 shown by the solid line in FIG. 6 is formed. On the other hand, the main tape winding means TI, T2. T3 post 1
Until 3°14.15 is rotated by a predetermined angle, at least the second housing part 23 is maintained in the state indicated by the human body relative to the first housing part 22, but (TI, T2°T3 post) 13
, 14 and 15 complete their rotation, or after they have rotated by a predetermined angle and have been rotated and moved to a position where the rotation is not obstructed, the first housing portion 22 is rotated by the amount indicated by B in the figure. The relative positions of TI, T2 . Move to a position where it enters the rotation locus of the T3 posts 13, 14, and 15. As a result, the size of the entire device can be reduced without being affected by the magnitude of the rotation locus of the tape winding means.

Next, with respect to the basic operation in the first embodiment already explained using FIGS. 5 and 6, details of a specific configuration example for realizing it will be explained using FIG. 1 and FIGS. 7 to 10. Explain.

In addition, tension post, 32, T6, T7, host 10, 12, 18.19 respectively, and pinch roller
The moving method of 20 is to place it on a rotating lever (not shown),
The main parts related to the present invention can be easily realized by well-known conventional techniques, such as by placing and fixing the S1 post 11 on the drum board (FIG. 8), which is moved by its rotation. Only examples will be described.

1 and 7 show the relative movement between the cassette board 24, which is a cassette mounting section on which the tape cassette 1 is mainly mounted, and the drum board 25, which is a drum mounting section on which the tape guide drum 9 is mainly mounted. , a first housing section 22 corresponding to the cassette mounting section and a second body section 2 corresponding to the drum mounting section.
FIG. 1 is an exploded perspective view of the components, and FIG. 7 is a plan view thereof. 1 and 7, the cassette board 24 includes, in addition to the tape cassette 1, the tape 4 built in the tape cassette 1, such as a supply reel stand 26, a take-up IJ reel stand 27, and a capsta/21. A body part 22 is directly or indirectly connected to a first body part 22 on which components to be driven and driven are placed and which is mainly provided to cover these parts. On the other hand, tape winding means mainly composed of a tape guide drum 9, T1 to T5 bosses 13 to 1 to be described later, a loading ring 59, etc. are mounted on the drum board 25, and a second housing portion mainly covers them. 23 and can be moved relative to each other. The first housing part 22 has a concave part 22', and the second housing part 23 has a convex part 23', the other of which is not shown, on both sides, and their engagement constitutes a housing guide means. , 1st. Second
It guides the relative movement direction of the body parts. Further, guide shafts 30.31 fixedly held by shaft holders 28.29 are respectively attached to the cassette board 24, and sliders 32.33 fixed to the drum board 25 are inserted into the guide shafts 30.31 and can freely slide. As a result, the cassette board 24 and drum board 25
is guided so as to be relatively movable in a fixed direction. A worm gear section 34 is provided between the cassette board 24 and the drum board 25.
a first cam gear 36 that meshes with the spur gear 35 and is provided with a first cam groove 37; and a second cam gear 36 that has a second cam groove 39 that meshes with the first cam gear 36.
The cam gear 38 and the first partial gear 41 and the second partial gear, which are installed in positions where the engaging pins 40 and 42 are engaged with the first cam groove 37 and the second cam groove 39, respectively, It is rotatably supported on the back surface of the cassette board 24. Further, a loading rack 44 is fixed to the cassette board 24 so as to be located below the first cam gear 36, and a motor 47 is fixed to the cassette board 24 at a position that does not overlap with the drum board 25 in the thickness direction. The fourth end is provided with a worm 48 that meshes with the worm gear 34. Further, the first partial gear 41 meshes with the rack portion of the slider 32 fixed to the drum board 25, and the second partial gear 43 has one end connected to the second housing portion 25.
The housing rack 45 is fixed to the mounting portion 46 of No. 3 and is engaged with a housing rack 45 located between the cassette board 24 and the drum board 25.

Therefore, even if a predetermined relative positional deviation occurs between the second partial gear 43 and the rod rack 45 in the tooth width direction and the tooth height direction of the gear portion! The integrity of the body hut 45 in the rack longitudinal direction is maintained. The loadie/gravity 44 fixed to the cassette board 24 meshes with a binion gear 49 which is pivotally supported by the drum board 25, and the rotation of the binion gear 49 is controlled by gears 50, 51 which are also pivotally supported by the drum board 25 and integrated. The signal is transmitted via the gear 52 by engaging the rotary shaft of the tape guide drum 9 with the rotating loading gear 53. The operation of the above configuration example will be explained mainly using FIG. 7. When the tape cassette 1 explained in FIG. The first housing portion 22 and the second housing portion are located at relative positions indicated by solid lines. Thereafter, the worm 48 is rotated by supplying electric power to the motor 47, and the first cam gear 36 is rotated counterclockwise via the worm wheel 34 and the spur gear 35. Accordingly, the engagement pin 40 is inserted into the first cam groove 37.
The first partial gear that engages through the drum base plate 26 rotates counterclockwise according to the cam shape of the first cam groove 37, and the rank portion of the slider 32 that engages moves, and is integrated with the slider 32. performs a relative approach operation between the cassette board 24 and the guide shirt 32, 33. On the other hand, during the close movement between the drum board 25 and the cassette board 24, the loader/loader fixed to the cassette board 24
Relative movement occurs between the rack 44 and the pinion gear 49 which is pivotally supported on the drum base plate 25, and as a result, by rotating the loading gear 53 (Fig.
The winding operation of the tape 4 around the tape guide drum 9, which will be described later, can be performed simultaneously in parallel with the movement of the drum substrate 25 and the cassette substrate 24 in proximity. On the other hand, the first
Second cam groove 39 formed on the second cam gear 38 that meshes with the cam gear 36: '122 Even if the cam gear 38 rotates clockwise in FIG. 7, the rotation radius of the cam groove changes at the beginning of the rotation. TI, T2. T3 boss 13 and 14 respectively
．． 15 and at least to a predetermined rotation position where the second body portion 23 does not interfere with the rotation, the second cam groove engaged with the second cam groove and the retaining pin 42 The partial gear 43 is stopped without rotating. and TI, T2. At a timing corresponding to after the tape winding means including the T3 post 13.14.15 has rotated to a predetermined rotation position including the final rotation position, the second cam groove 39 decreases its rotation radius, rotates the second partial gear 43 counterclockwise in the figure, moves the housing rack 45 that meshes with it, and as a result brings the first housing part 22 and the second housing part 23 closer together. The operation is started after the close movement of the sword center board 24 and the drum board 25, and finally the first partial gear 41, slider 32, drum board 25, second partial gear 38, housing rack 45, and second Housing portion 23, tape guide drum 9, binion gear 4
9, the gears 50, 51, and 52 each move to the position indicated by the single line in FIG.
When setting the start timing for entering the rotation locus of the tape winding means after the rotation of the tape winding means to the final rotation position, This can be achieved by rotating the first partial gear 41 by a predetermined angle until the approaching and entering operations of the second housing part 23 are completed, and then keeping the rotating radius constant so as to stop the first cam groove.

Next, using FIG. 8, FIG. 9, and FIG.
An embodiment of the tape winding means placed on the holder will be described in detail. FIG. 8 is an exploded perspective view of the components placed on the drum board 25.

FIG. 9 is a side view during the winding operation, and FIG. 10 is a plan view when the winding operation is completed. In FIG. 8, a drum holder 54 for holding the tape guide drum 9 at a predetermined angle to the drum base plate 25 is fixed to the drum base plate 25 at a predetermined angle in a predetermined direction. Two guide rollers 55 are rotatably supported on the upper surface 542L, and a roller plate 5 that can be moved slightly around a center pin 56 is supported by one guide roller 5.
8 is rotatably held and fixed. These three guide rollers 65 and 58 are approximately diamond-shaped and are installed on the tape guide drum 9 at a predetermined angle as shown in FIG. It engages with the V-groove portion 59a and rotatably holds the loading ring 59 and the loading gear 53 around the tape guide drum 9.

Note that the loading gear 53 is the gear 52°51 as described above.
．． It meshes with the pinion gear 49 via the pinion gear 50 and rotates by relative movement with the loading rack 44.

The loading ring 59 holds the main board eO, on which the T1 post 14, T2 post 15, and T3 post 16 are planted, in a state where it can rotate freely around the boat fulcrum pin 61 and is biased clockwise by the main boat spring 68. are doing. Furthermore, the loading ring 59 is connected to the main boat θ
A sub-boat 62 with a T4 post 16 and a T5 post 1 installed is slidably and rotatably guided behind the main boat by a sub-boat guide 59b. )60
and is energized on the loading ring 69 side. Although the loading ring 59 is inclined with respect to the drum base plate 25 as shown in FIG. 9, the sub-boat guide 59b
The direction of inclination is set so that the height of the sub-boat 62 can be simply changed by rotation thereof without changing the angle with respect to the drum base plate 25. The sub-boat stopper 64 comes into contact with the tip end 62a of the sub-board 62 during the loading process of winding the tape 4 onto the tape guide drum 9, and raises the sub-board 62 to its height as the sub-board guide 59b rotates. It is fixed to the drum base plate 25 so that it can be rotated while changing its position and its position can be determined. In addition, the main boat stopper 65 is used to position the main boat 60 together with the stopper plate 66.
The first post 11 is erected and fixed to the drum base plate 25 together with the S2 post guide 67 that guides and positions the S2 post 12 (see FIG. 6).

Next, the tape guide drum 9 for the tape 4 with the above configuration is
The winding operation will be explained. As described above, the loading ring 59 rotates together with the loading gear 53 due to the relative movement between the drum board 25 and the cassette board 24. At the beginning of rotation, the main boat eO is rotated and biased counterclockwise by the main boat spring e8, and the sub boat 62 is also biased by the sub boat spring 63 by moving on the sub boat guide 59b toward the main boat 60 side. Then, as shown in FIG. 8, the tape cassettes 1 start rotating while remaining close to each other within the opening 7 of the tape cassette 1, and the tape 4' stretched on the front surface is pulled out from the tape cassette 1. Eventually, the tip end 622L of the sub-boat 62 comes into contact with the sub-port stopper 64, and its rotation together with the loading ring 59 is prevented. Furthermore, by rotating the loading 59, the sub port guide S
9λ rotates against the sub-boat spring 63, changes the height as shown by the two-dot chain line in FIG. 9, and rotates to the position shown in FIG. 10. Meanwhile, main bow) 60
TI, T2. T3 post 13, 14.15
moves to the position indicated by the dashed line in FIG. has not started, and there is no loading ring 59 and TI, T2. Rotation of the T3 posts 13, 14, 15 is not hindered. As the loading ring 59 rotates further, the protrusion 5Oa (the eighth
(see figure) comes into contact with the right side surface portion 65b of the convex portion 65a provided at one end of the main boat stopper 65. After that, as the loading ring 59 further rotates, the main boat 60 rotates counterclockwise about the boat fulcrum pin 61 against the main boat spring 68, and eventually the protrusion 60a of the main boat 60 boat stopper 65
from the right side surface 65b of the convex portion 65a to the upper side surface 650 (see Figure 1Q). As a result, the main boat 60 rotates on the loading ring 59, the T1 post 13 approaches the tape guide drum 9, and at the same time the main boat 60 rotates on the loading ring 59.
Main boat stock 65 and stopper plate 6
Positioned by 6. On the other hand, although the movement of the S2 post 12 is not shown because it is easily possible using a well-known technique, for example, the S2 post 12 may be moved on a ring arm (not shown) that is linked to the approaching movement of the drum board 25 and the cassette board 24. S
The second post 12 is moved to the position shown in FIG. 10 while being guided by the S2 post guide 6T, and as a result, the winding of the tape 4 around the tape guide drum 9 is completed as shown in FIG. After this or main po) 60
At the same time, the loading ring 59 is rotated by a predetermined angle,
After rotating to a position that does not impede the rotation, as mentioned above,
As shown in FIG.
, T2. It comes into the rotation trajectory of the T3 posts 13, 14, 15, etc. when they rotate. Also, tape 4
It is obvious that when unwinding the tape guide drum 9 from the tape guide drum 9, the operation is the opposite to that described above. Second housing part 22
．． After the separation operation 23, the drum board 25 and the cassette board 24 are separated. Note that the second housing part 2
The longitudinal direction of the tape 4 in the tape path, which is stretched between the T3 post 15 and the T4 post 16 passing between the T3 post 15 and the tape guide drum 9, is set substantially parallel to the second housing part 23. , loading ring 59 tape 4
The second radius facing the body at the rotational position where the winding operation is almost completed is the main boat eO1TI, T2. T
3 posts, 13, 14, and 15 are set sufficiently smaller than the rotation loci of the second body part 23 and the tape guide drum 9 (indicated by B in the upper part of FIG. 6). This contributes to the miniaturization of the entire device.

In the above embodiment, a retaining means that mainly engages in the direction of approaching and separating is provided between the second housing section 23 corresponding to the cassette mounting section and the drum mounting section, but the drum mounting section Second, even if the device is installed between body parts, smooth relative movement of the entire device can be realized.

Effects of the Invention As described above, according to the present invention, even when a plurality of relative moving bodies such as the drum mounting section and the cassette mounting section, and also the body section and the second body section move simultaneously, it is possible to achieve extremely smooth movement. This can be done by operation, and as a result, the overall size of the device can be reduced with high reliability.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of parts constituting the main parts in an embodiment of the present invention, Figs. 3 is a perspective view seen from the back, FIG. 4 is a side sectional view, FIGS. 5 and 6 are schematic plan views for explaining basic operations, and FIG. FIG. 8 is an exploded perspective view of parts constituting other important parts, FIG. 9 is a side view of the same, FIG. 10 is a plan view of the same, and FIG. 11 is a plan view of a conventional example. It is. 1... Tape number 7, 4... Tape, 7.
...Opening, 8...Cassette post, 9...
・Tape guide drum, 13...T1 post, 1
4...T2 post, 15...T3 post, 2
2...first housing part, 23°...second housing part,
24... Cassette board, 25... drum board. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 100'S3i 8 Otsu 1
°'To 8 To Figure 4 ν

Claims (2)

[Claims] (1) A cassette mounting section on which a tape cassette is placed, a drum mounting section on which a tape guide drum is placed, and a cassette mounting section that guides the approach and separation of the cassette placement section and the tape cassette placement section. a placing part guide means, a first housing part provided corresponding to the cassette placing part, a second housing part provided corresponding to the drum placing part, the first housing part and the second housing part. a cassette part guide means for guiding the parts to approach and separate from each other in substantially the same direction as the guiding direction of the cassette part or the drum part; A recording/reproducing device characterized in that it has an engaging means that mainly engages with the second housing section in the direction of approach and separation between the drum mounting section and the cassette mounting section. (2) completing the approaching operation between the first housing section and the second housing section after the approaching operation between the cassette loading section and the drum loading section;
A driving force for transmitting a driving force via an engagement means to start a separating operation between the first housing section and the second housing section prior to the separating operation between the cassette mounting section and the drum mounting section. Claim 1, characterized in that it has a transmission means and a drive source that applies a driving force to the driving force transmission means.
The recording/reproducing device described in Section 1.