JPH07161101A - Guide mechanism for drawing-out of tape - Google Patents

Abstract

PURPOSE:To provide a guide mechanism for the drawing-out of a tape which protect the tape from a large tension which is newly applied to the tape by the reaction of a large tension which is applied to the tape first and, further, which facilitate the high speed quick feed or rewind of the tape. CONSTITUTION:A guide arm 51 which is supported by a mechachassis is swung and a tape is drawn out from, a cassette-half by a guide roller 53 which is supported by the swinging end of the guide arm 51 so as to be able to rotate. When the tape is drawn out, a cam gear 55 is turned and a cam lever 59 is swung synchronously with the guide arm 51 by the retaining between the cam trench 57 of the cam gear 55 and a cam follower. When the guide arm 51 is positioned at a loading position where the tape is drawn out, the retainer 5101 of of the guide arm 51 is positioned between the two retaining pins 5901 of the cam lever 59 to limit the swinging range of the guide arm 51 at the loading position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape pull-out guide mechanism provided for loading a tape in a video reproducing (rerecording) device, for example.

[0002]

2. Description of the Related Art Generally, a cassette half of a video cassette is provided with a concave portion through which a tape contained in the cassette half is partially exposed, and an opening / closing cover provided in the concave portion exposes the concave portion to the concave portion. The recording surface of the tape is protected. On the other hand, in a video playback (re-recording) device, the opening / closing cover of the cassette half loaded inside the device is opened from the cassette loading port, and the tape inside the opening / closing cover is pulled out from the cassette half (loading).
The recording surface of the tape is applied to a rotating drum, the tape is run in this state, and the rerecording head of the rotating drum records and reproduces video data on the recording surface of the tape.

FIG. 4 is a schematic diagram of a conventional feed side pull-out guide mechanism that also serves as a tension regulator for pulling out the tape from the cassette half. FIG. 4 (a) shows a state in which the tape is stored in the cassette half (unloaded). 4B shows a state in which the tape is pulled out from the cassette half (loading). The conventional feed-side pull-out guide mechanism shown in the figure is provided together with a take-up-side pull-out guide mechanism (not shown) on a mechanical frame (not shown) provided with a feed-side reel stand and a take-up reel stand. . The feed-side pull-out guide mechanism is rotatably supported by a swing arm 3 which is swingably supported by a support shaft 1 provided on the mechanical frame, and a swing end of the swing arm 3. A guide roller 5, a coil spring 7 installed between the swing arm 3 and the mechanical frame, a guide groove 9 formed at one location of the mechanical frame near the swing arm 3, and the guide groove. 9 is provided so as to be slidable along 9 and the coaster 11 that engages and disengages with the swing arm 3, and the swing arm 3 is moved by the coil spring 7 from the unload position shown in FIG. Four
It is biased in the swinging direction to the loading position shown in (b).

According to the conventional feed-side pull-out guide mechanism having the above-mentioned structure, in the unload state, as shown in FIG.
As shown in, the coaster 11 engages with the swing arm 3 from the loading position side, and the swing of the swing arm 3 is restricted by the coaster 11. In this state, when the cassette half is loaded into the apparatus from the cassette loading port, the guide roller 5 and the pin 13 of the coaster 11 are inserted into the recess, and the back side of the tape (the side opposite to the recording surface). The surface of the cassette half is opened by the cover opening / closing mechanism (not shown).

When the opening / closing cover is opened, the coaster 11 is moved into the guide groove 9 by driving a loading motor (not shown) while the feed side reel base and the winding side reel base are freely rotatable. The tape is slid along the swing arm 3 and hooked by the pin 13 to be pulled out from the cassette half. The tape is pulled out in cooperation with a coaster (not shown) on the winding side. The recording surface of the part is applied to the rotary drum. Along with this, the engagement between the coaster 11 and the swing arm 3 is released, the swing arm 3 swings to the loading position by the bias of the coil spring 7, and the guide roller 5 causes the tape to move. Is pulled out from the cassette half, and at the loading position of the swing arm 3, tension is applied to the tape portion with which the guide roller 5 abuts by the bias of the coil spring 7.

Further, when the drawn tape is to be stored in the cassette half, one of the feed side reel stand and the winding side reel stand is fixed and the other is rotationally driven by a motor (not shown), The tape is wound on the reel in the cassette half, and the swing arm 3 is swung to the unload position accordingly. Then, after that, the coaster 11 is slid along the guide groove 9 in a direction of approaching the swing arm 3, and the coaster 11 engages with the swing arm 3 from the loading position side. The swing arm 3
Rocking is restricted at the unloading position.

[0007]

However, the above-mentioned conventional feed-side pullout guide mechanism is not provided with a structure for restricting the swing of the swing arm 3 toward the unload position at the loading position. Therefore, for example, the running of the tape is stopped for some reason,
When excessive tension is applied to the tape by the guide roller 5, the swing arm 3 is largely swung toward the unload position side to absorb the tension, and the tape is loosened. Therefore, after the swing arm 3 is swung to the unload position side, the running of the tape is restarted, and the swing arm 3 is swung to the loading position side by the urging force of the coil spring 7. When moved, there is a problem in that even greater tension may be applied to the tape and the tape may be damaged.

In the conventional drawer guide mechanism, by engaging the coaster 11 with the swing arm 3,
Since the swing of the swing arm 3 is regulated at the unload position, the tape cannot be pulled out from the cassette half unless the coaster 11 is slid in the direction away from the swing arm 3 during loading. Therefore, even in the case of operations such as fast-forwarding and rewinding of the tape that do not need to record and reproduce the video data on the recording surface of the tape, the tape is abutted against the rotating drum, and therefore the tape is fast-forwarded at high speed. Alternatively, there was a problem that it could not be rewound.

The present invention has been made in view of the above problems, and an object of the present invention is to prevent a large new tension from being applied to the tape due to the reaction when a large tension is applied to the tape. An object of the present invention is to provide a tape pull-out guide mechanism that enables fast-forwarding or rewinding of the tape at high speed.

[0010]

In order to achieve the above object, the present invention provides a guide arm that is swingably supported by a mechanical chassis and that pulls out and stores a tape with respect to a cassette half, and the mechanical chassis swings. A cam lever that is movably supported, and a cam member that swings the cam lever,
An engaging member provided between the guide arm and the cam lever for engaging and disengaging the guide arm and the cam lever, the cam member and the engaging member of the guide arm accommodating the tape in the cassette half. It is configured such that the guide arm cannot be swung at the swing position, and the guide arm can be swung within a predetermined range at the swing position of the guide arm where the tape is pulled out from the cassette half. It is characterized by being

Further, according to the present invention, the engaging member has two pins projecting from the cam lever at intervals, and an insert projecting from the guide arm and inserted between the two pins. It is assumed to be composed of pieces. Further, according to the present invention, the two pins hold the insertion piece at a swing position of the guide arm that stores the tape in the cassette half, and the guide arm of the guide arm that pulls out the tape from the cassette half. In the swinging position, a gap is formed between the two pins and the insertion piece.

[0012]

According to the present invention, the cam member and the engaging member allow the guide arm to swing within a predetermined range at the swing position of the guide arm that has pulled out the tape from the cassette half. Therefore, when the guide arm is swung to the swing position side where the tape is housed in the cassette half in order to absorb the excessive tension applied to the tape, the swing is limited to a small range. After that, it is possible to prevent the guide arm from reciprocally swinging largely to the swinging position side where the tape is pulled out from the cassette half, and it is possible to prevent a large tension from being applied to the tape and damaging the tape. It will be possible.

Further, according to the present invention, the cam member and the engaging member disable the swing of the guide arm at the swing position of the guide arm in which the tape is housed in the cassette half. The tape can be pulled out and stored independently of the coaster mechanism that applies the tape to the rotating drum. Therefore, it is possible to prevent the tape drawn from the cassette half from being applied to the rotating drum. The tape can be fast forwarded and rewound at high speed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a mechanical deck portion of a video reproducing / recording apparatus equipped with a tape pull-out guide mechanism according to an embodiment of the present invention. The mechanical deck 21 of the present embodiment shown in the figure
Is a mechanical chassis 23 that is rectangular in plan view, and a cassette compartment 25 that is vertically movable above the mechanical chassis 23 and that is loaded with a cassette half H shown by an imaginary line in the drawing. The cassette compartment 25 is arranged at the front left side of the mechanical chassis 23.
A capstan motor 35 for driving up and down, a pull-out guide mechanism 29 for pulling out the tape H1 from the cassette half H on the cassette compartment 25, and a recording surface of the tape H1 pulled out from the cassette half H for the mechanical chassis 23. The rotating drum 3 is provided with a coaster mechanism 33 that abuts against the rotating drum 31 in the front center.
A re-recording head (not shown) is provided on the circumferential surface of the roller 1 so as to be partially projected in the radial direction of the rotary drum 31 and rotatable in the circumferential direction.

A capstan motor 35 is supported on the mechanical chassis 23 on the right side of the rotary drum 31,
A capstan shaft 3501 of the capstan motor 35 projects above the mechanical chassis 23. A pinch roller 37 is provided at a location of the mechanical chassis 23 near the capstan shaft 3501 so as to be movable in a direction in which the pinch roller 37 moves toward and away from the peripheral surface of the capstan shaft 3501.

Further, the cassette compartment 25
A feed side reel stand 39 and a take up side reel stand 41 are rotatably disposed at the mechanical chassis 23 below the mechanical chassis 23, and the mechanism between the feed side reel stand 39 and the take up side reel stand 41 is arranged. A power switching transmission mechanism 43 is arranged at the chassis 23. The power switching transmission mechanism 43 swings the first swing arm 4301, a swing gear 4303 rotatably supported by the swing end of the first swing arm 4301, and the first swing arm 4301. Let
In addition, the first swing arm 430 includes a reel motor 4305 that rotationally drives the swing gear 4303.
Reference numeral 1 denotes the reel motor 4305 that causes the swinging gear 4303 to move to the gear 39 on the outer peripheral surface of the feed side reel base 39.
01 and a position where the swinging gear 4303 meshes with the gear 4101 on the outer peripheral surface of the take-up reel stand 41, and the swinging gear 4303 is rotationally driven by the reel motor 4305. To be done.

The cassette compartment 25 has an upper moving end for transferring the cassette half H between the cassette compartment 25 and a cassette insertion opening (not shown) provided on the front panel of the video playback recorder by the capstan motor 35. And the tape H by the pullout guide mechanism 29.
It is moved to and from the lower end that pulls out 1.

A feed reel H3 and a take-up reel H5 are housed inside the cassette half H, and the tape H is provided on the feed reel H3 and the take-up reel H5.
Both ends of 1 are wound, and the end surfaces of the feed reel H3 and the take-up reel H5 face the bottom surface of the cassette half H facing the cassette compartment 25 in a state where the cassette half H is loaded on the cassette compartment 25. Is exposed to. Further, an open concave portion (not shown) is formed in the end portion and the lower surface at the end portion of the cassette half H on the side to be inserted into the cassette insertion opening, and the feed reel H3 and the winding reel are formed in this concave portion. Take reel H
A part of the tape H1 between the five is exposed, and an opening / closing cover (not shown) provided at the end of the cassette half H for opening and closing the recess protects the tape H1 portion exposed in the recess.

The feed-side reel stand 39 and the take-up reel stand 41 are engaged with the feed reel H3 and the take-up reel H5 of the cassette half H, respectively, with the cassette compartment 25 moved to the lower end. Together,
In this state, the swing gear 4303 and the gear 3901 of the feed side reel stand 39 and the take up reel stand 41 are
Of the feed reel H3 or the take-up reel H5 by rotating the swinging gear 4303 by the reel motor 4305. The tape H1 is run between the feed reel H3 and the take-up reel H5.

The pull-out guide mechanism 29 comprises a take-up side pull-out mechanism 45 arranged on the side of the take-up reel stand 41 and a feed-side pull-out mechanism 47 arranged on the side of the feed-side reel stand 39. The present invention is applied to the feeding-side drawing mechanism 47. The winding-side pull-out mechanism 45 is configured to include a second swing arm 49, and a guide pin 4901 is projectingly provided at a swing end of the second swing arm 49. The second swing arm 49 has a swing position where the guide pin 4901 is inserted into the recess of the cassette half H on the cassette compartment 25,
The guide pin 4901 is oscillated between an oscillating portion located in the vicinity of the capstan motor 35, and the oscillating movement causes the power of the loading motor 27 to pass through a power transmission mechanism (not shown). 2 is transmitted to the swing arm 49.

The feed-side pull-out mechanism 47 has a guide arm 51, a guide roller 53, a cam gear 55, a cam groove 57, and a cam lever 5, as shown in enlarged plan views of the unloading state and the loading state in FIGS.
9 and a cam follower 61. In this embodiment, the cam gear 55, the cam groove 57, and the cam follower 61 constitute a cam member. As shown in FIG. 1, the guide arm 51 is swingably supported by a support shaft 63 projecting from the mechanical chassis 23 facing the front left side of the cassette compartment 25.
The coil springs 65 shown in FIGS. 3A and 3B are urged to the rocking position where the loading state shown in FIG. 3 is obtained. The guide roller 53 is rotatably supported by the swing end of the guide arm 51 on the surface of the guide arm 51 opposite to the surface facing the mechanical chassis 23, and on the surface of the guide arm 51 facing the mechanical chassis 23. An engagement piece 5101 (corresponding to an insertion piece) is vertically provided at the position of the guide arm 51 between the support shaft 63 and the guide roller 53.

The cam gear 55, as shown in FIG.
The cam gear 55 is disposed below the mechanical chassis 23 and is rotatably supported by a support shaft 67 vertically extending from the mechanical chassis 23. The cam gear 55 is attached to the output shaft of the loading motor 27 and a worm 6901. , The worm 6
It is rotationally driven by the power of the loading motor 27 via a power transmission gear mechanism 69 including a relay gear 6903 meshing with 901. The cam groove 57 is the cam gear 5
5 and the small diameter portion 5701, the large diameter portion 5703, and these small diameter portions 570, as shown in FIGS. 2 and 3.
1 and a connecting portion 5705 that connects the large diameter portion 5703.

The cam lever 59 is disposed below the mechanical chassis 23 and above the cam gear 55. One end of the cam lever 59 is swingably supported by a support shaft 71 vertically extending from the mechanical chassis 23. The cam follower 61 engaging with the groove 57 is provided on the cam lever 59. Two locking pins 5901 (corresponding to pins) project from the other end of the cam lever 59 facing the mechanical chassis 23, and the tips of the locking pins 5901 are not shown in the mechanical chassis 23. The engaging piece 5101 of the guide arm 51 is inserted into the gap between the two locking pins 5901 by extending above the mechanical chassis 23 through the pin passing hole. In the present embodiment, the coil spring 6
The biasing force of the guide roller 53 and the reaction force of the tension applied to the tape H1 by the guide roller 53 are balanced, and the guide arm 51 is swung to the swinging position shown in FIG. The guide arm 51 and the cam lever 59 are configured such that the joint piece 5101 is located in the middle of the both locking pins 5901.

The coaster mechanism 33 comprises a guide groove 73 and a coaster roller 75. The guide groove 73 is
As shown in FIG. 1, the coaster roller 7 is formed in an arc shape from the mechanical chassis 23 on both the left and right sides of the rotary drum 31 to the mechanical chassis 23 facing the front center of the cassette compartment 25.
5 is supported by each of the guide grooves 73, and each coaster roller 75 is slid along each of the guide grooves 73 by the loading motor 27.

In FIG. 1, reference numeral 77 is a sensor for detecting the cassette compartment 25 when the cassette compartment 25 is located at the upper end and the lower end, and 79 is the loading motor based on the detection result of the sensor 77. Reference numeral 81 denotes a microcomputer for controlling the driving of 27, and 81 denotes a driver for driving the loading motor 27 under the control of the microcomputer 79.

Next, the operation will be described. When the cassette half H inserted from the cassette insertion port is loaded into the cassette compartment 25 located at the upper moving end and the fact is detected by the sensor 77, the driver 81 is controlled by the microcomputer 79. The capstan motor 35 is driven by
The cassette compartment 25 is moved to the lower end. At the lower end, the feed reel H3 and the take-up reel H5 of the cassette half H are engaged with the feed-side reel stand 39 and the take-up reel stand 41 of the mechanical chassis 23, respectively, and are driven by the reel motor 4305. The first swing arm 4301 is swung so that the swing gear 4303 is located between the feed side reel base 39 and the winding side reel base 41.

At the lower end, the guide pin 4
901, guide roller 53, and coaster roller 75
Are respectively inserted into the recesses of the cassette half H,
The opening / closing cover of the cassette half H is opened by a cover opening / closing mechanism (not shown) facing the back surface of the tape H1 opposite to the recording surface exposed in the recess, and the tape H1 is exposed to the outside of the cassette half H. To do.

At this time, as shown in FIG. 2, the cam follower 61 is engaged with the small diameter portion 5701 of the cam groove 57, and the two locking pins 5901 of the cam lever 59 are engaged with the engaging piece 5101 of the guide arm 51. And the engaging piece 5101 is clamped by these two locking pins 5901, and this clamping restricts the rocking of the guide arm 51 at the rocking position where it is in the unloading state.

Then, the cassette compartment 2
After moving 5 to the lower end, the second swing arm 49 is driven by the loading motor 27 at the time of recording and reproducing video data on the tape H1.
Is swung, the tape H1 exposed in the recess is hooked by the guide pin 4901, and pulled out from the cassette half H to a position near the capstan motor 35. Further, the cam gear 55 is rotationally driven by the driving of the loading motor 27 via the power transmission gear mechanism 69, and accordingly, as shown in FIG. 3, the cam follower 61 causes the cam follower 61 to have a small diameter portion 5701 of the cam groove 57. To the large diameter portion 5703 via the connecting portion 5705, the cam lever 59 is swung accordingly, and the engagement between the two locking pins 5901 and the engagement piece 5101 is released.

The locking pin 5901 and the engaging piece 510
When the engagement of No. 1 is released, the guide arm 51 is swung to the swing position where the coil spring 65 is biased to the loading state, the tape H1 in the recess is hooked by the guide roller 53, and the cassette Half H
To a position near the loading motor 27. At this time, the swing of the guide arm 51 is caused by the urging force of the coil spring 65 and the guide roller 53.
Is stopped at the swing position where the tape H1 is in a loading state in which the reaction force of the tension applied to the tape H1 is balanced,
At the rocking position, the engagement piece 5101 is engaged with the both locking pins 5.
It is located in the middle of 901. Therefore, the swinging of the guide arm 51 in the biasing direction of the coil spring 65 and in the opposite direction due to the change of the reaction force from the tape H1 causes a gap between the both locking pins 5901 and the engaging piece 5101. Limited to range.

Further, after swinging the guide arm 51,
Alternatively, at the same time as the rocking, independently of the guide arm 51, the coaster rollers 75 are slid along the guide grooves 73 by the loading motor 27, and the tape H1 is moved by the coaster rollers 75. The recording surface of the tape H1 that is hooked and pulled out to the mechanical chassis 23 on the left and right sides of the rotary drum 31 is applied to the peripheral surface of the rotary drum 31.

When the recording and reproducing of the video data on the tape H1 are completed, the first swing arm 4301 is started.
Is driven by the reel motor 4305.
The swinging gear 303 is swung to a position where it meshes with either the gear 3901 of the feeding side reel base 39 or the gear 4101 of the winding side reel base 41, and the swinging gear 4303.
Is rotatably driven by the capstan motor 35,
One of the feed reel H3 and the take-up reel H5 is rotationally driven. Along with this, the pull-out guide mechanism 29 and the coaster mechanism 3 are operated in the opposite manner to the above.
3 to drive the tape H1 to the cassette half H
After that, the cassette compartment 25 is moved to the upper moving end, and by the above operation, the cassette half H is discharged to the outside of the apparatus.

When the tape H1 is rewound to the feed reel H3 side of the cassette half H or fast-forwarded to the take-up reel H5 side, the tape H1 is moved from the cassette half H by the pull-out guide mechanism 29. After the tape is pulled out, the coaster mechanism 33 is not operated and the tape H
1 is not applied to the peripheral surface of the rotary drum 31,
One of the feed reel H3 and the take-up reel H5 is rotationally driven.

As described above, according to the present embodiment, the guide arm 51 supported by the mechanical chassis 23 is swung, and the cassette half H is rotatably supported by the guide roller 53 at the swing end of the guide arm 51. The tape H1 is pulled out from the cam gear 5 when the tape H1 is pulled out.
5 is rotated, the cam groove 59 of the cam gear 55 is engaged with the cam follower 61 to swing the cam lever 59 in synchronization with the guide arm 51, and when the guide arm 51 is in the loading position for pulling out the tape H1. ,
The engaging piece 5101 of the guide arm 51 is connected to the cam lever 5
It is arranged in the middle of the two locking pins 5901 of No. 9 to limit the swing range of the guide arm 51 at the loading position.

Therefore, when the guide arm 51 is swung to the unload position side in order to absorb the excessive tension applied to the tape H1, the swing is caused by the swing of the engaging piece 5101 and the locking pin. The engagement with 5901 is restricted to a smaller range, and therefore, thereafter, the guide arm 51 is prevented from being largely swung to the loading position side by the reaction due to the biasing force of the coil spring 65, and a large tension is applied to the tape. It is possible to prevent the tape H1 from being damaged by being added to the H1.

Further, according to this embodiment, the tape H1
When the cassette half H is stored in the cassette half H, the guide arm 51 is swung to the unload position, and the cam lever 59 is swung due to the rotation of the cam gear 55 and the engagement of the cam groove 57 and the cam follower 61. Moved,
The two locking pins 5901 engage with the engaging piece 5101 to clamp the engaging piece 5101, and by this clamping, the swing of the guide arm 51 is restricted at the unload position.

Therefore, it is not necessary to use the coaster mechanism 33 to regulate the swing of the guide arm 51 at the unload position, unlike the conventional feed-side pull-out mechanism, and it is independent of the coaster mechanism 33. Then, the swing motion of the guide arm 51 can be performed. Therefore, as described above, the tape H1 pulled out from the cassette half H can be fast-forwarded and rewound without being applied to the peripheral surface of the rotary drum 31, and the tape H1 can be driven at high speed. Fast forward and rewind can be realized.

In this embodiment, the two locking pins 5 are
Although 901 is supposed to engage with the engaging piece 5101,
The locking pins 5901 may be configured to engage with both side edges of the guide arm 51. Alternatively, a hole is formed in one of the guide arm 51 and the cam lever 59, and a plate piece to be inserted into the hole is provided in the other, and when the guide arm 51 is in the loading position, the plate piece and the hole are formed. A clearance may be formed between the inner periphery and the inner periphery of the hole, and the peripheral edge of the plate piece may abut the inner periphery of the hole when the guide arm 51 is in the unload position. With such a configuration, at the loading position, the plate piece can move in the hole in a direction intersecting with a direction of being inserted into the hole, and the guide arm 51 swings within a predetermined range. On the other hand, on the other hand, at the unloading position, the plate piece becomes immovable in the direction intersecting the direction in which it is inserted into the hole, and the swing of the guide arm 51 is restricted. You can In this way, the cam lever 5
9 and the guide arm 51 with which the engaging member engages
The structure of the part is not limited to that shown in the present embodiment, and is arbitrary. Further, in the present embodiment, the case where the present invention is applied to the feeding-side drawing mechanism 47 has been described, but the present invention is also applicable to the winding-side drawing mechanism 45.

[0039]

As described above, according to the present invention, a guide arm that is swingably supported by a mechanical chassis and that pulls out and stores a tape with respect to a cassette half and a swingable support by the mechanical chassis are provided. Cam lever,
A cam member that swings the cam lever; and an engagement member that is provided between the guide arm and the cam lever to engage and disengage the guide arm and the cam lever. At the swinging position of the guide arm housed in the cassette half, the swinging of the guide arm is disabled, and at the swinging position of the guide arm when the tape is pulled out from the cassette half, the guide arm is moved within a predetermined range. It is configured to be swingable. Therefore, when a large tension is applied to the tape, a new large tension can be prevented from being applied to the tape due to its reaction, and further, the tape can be fast-forwarded or rewound at high speed.

[Brief description of drawings]

FIG. 1 is a plan view of a mechanical deck portion of a video reproducing / recording apparatus equipped with a tape pull-out guide mechanism according to an embodiment of the present invention.

FIG. 2 is an enlarged side view showing an unloaded state of the feed-side pullout mechanism of FIG. 1 according to an embodiment of the present invention.

3 is an enlarged side view showing a loading state of the feed-side pullout mechanism of FIG. 1 according to an embodiment of the present invention.

FIG. 4 is a diagram showing a schematic configuration of a conventional feed-side pull-out guide mechanism that also serves as a tension regulator, and FIG.
Tape was stored in the cassette half (unloaded)
FIG. 4B is a schematic configuration diagram of the state, and FIG. 4B is a schematic configuration diagram of the state where the tape is pulled out from the cassette half (loading).

[Explanation of symbols]

 23 Mechanical Chassis 29 Drawer Guide Mechanism 47 Feeding Side Drawer Mechanism 51 Guide Arm 5101 Engaging Piece (Inserting Piece) 55 Cam Gear (Cam Member) 57 Cam Groove (Cam Member) 59 Cam Lever 5901 Locking Pin (Pin) 61 Cam Follower (Cam Member) ) H cassette half H1 tape

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Akihiro Uetake 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation (72) Inventor Kazuyoshi Suzuki 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation

Claims (3)

[Claims] 1. A guide arm swingably supported by a mechanical chassis for pulling out and storing a tape with respect to a cassette half, a cam lever swingably supported by the mechanical chassis, and a swing of the cam lever. A cam member; and an engaging member provided between the guide arm and the cam lever for engaging and disengaging the guide arm and the cam lever. The cam member and the engaging member house the tape in the cassette half. At the swing position of the guide arm, the swing of the guide arm is disabled, and at the swing position of the guide arm where the tape is pulled out from the cassette half, the guide arm is swingable within a predetermined range. The tape pull-out guide mechanism is characterized in that: 2. The engagement member is composed of two pins that respectively project from portions of the cam lever that are spaced apart from each other, and an insert piece that projects from the guide arm and is inserted between the two pins. The tape pull-out guide mechanism according to claim 1. 3. The guide pin holds the insertion piece at a swinging position of the guide arm that accommodates the tape in the cassette half, and swings the guide arm that pulls out the tape from the cassette half. The tape pull-out guide mechanism according to claim 2, wherein a gap is formed between the two pins and the insertion piece in the moving position.