JP2534584Y2 - Auto reverse tape recorder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auto-reverse tape recorder capable of recording only during traveling in a tape forward direction.

[0002]

2. Description of the Related Art Conventionally, in an auto-reverse tape recorder capable of recording only when traveling in a tape forward direction,
When the switching lever that switches the tape running direction by being located on the forward side or the reverse side is located on the reverse side, the engaging wall formed on the switching lever engages with the engaging portion formed on the recording lever. There is a configuration in which the recording lever cannot be operated by causing the recording lever to be operated.

[0003]

In the tape recorder constructed as described above, when the recording lever is forcibly operated in the reverse mode in which the switching lever is located on the reverse side, the engagement wall of the switching lever and the engagement of the recording lever are reduced. The joint may be deformed and cause a failure of the mechanism.

[0004] Therefore, an object of the present invention is to prevent deformation of components due to a recording operation in a reverse mode.

[0005]

According to the present invention, a pair of capstans, a pair of pinch rollers arranged to be brought into pressure contact with these capstans, a recording lever, a play lever, and a play lever are provided. An auto-reverse that can be used only when running in the tape-forward direction, has a control lever that locks, a switching lever that moves forward or reverse to selectively press one of the pinch rollers against the capstan, and a stop lever. In the tape recorder, a lock member is arranged at a portion of the recording lever corresponding to one end of the switching lever, and an engagement portion that engages with the lock member is formed at one end of the switching lever.
Only when the switching lever is located on the forward side, the lock member engages with the engaging portion of the switching lever to lock the operation state of the recording lever.

A lock member is provided with a release portion, and a stop lever portion corresponding to the release portion is formed with an engagement portion which engages with the release portion, and the stop lever is operated when the recording lever is locked. The engagement portion of the stop lever engages with the release portion of the lock member to release the engagement between the lock member of the recording lever and the engagement portion of the switching lever.

[0007]

In the forward mode in which the switching lever is located on the forward side, the recording lever is moved until the lock member and the engaging portion of the switching lever engage.
When the lock member 45 and the engaging portion 7d are engaged, the recording lever 2
Lock the operation state of 3.

When the switching lever 7 moves to the reverse side after the tape running in the forward direction is completed, the locking member 4
5 is automatically disengaged from the engaging portion 7d. When the lock of the recording lever 23 is released, the recording lever 23 moves to the original position. Therefore, the recording state of the tape recorder is released.

To release the lock of the recording lever 23 in the recording state, the stop lever 28 is moved until the engaging portion 28a of the stop lever 28 and the releasing portion 45b of the lock member 45 are engaged. Engaging part 28a and releasing part 45
The engagement between the lock member 45 and the engagement portion 7c of the switching lever 7 is released by engaging the lock member 45 with the lock member 45. When the lock of the recording lever 23 is released, the recording lever moves to the original position. Therefore, the recording state of the tape recorder is released.

When the recording lever 23 is operated in the reverse mode in which the switching lever 7 is located on the reverse side, the lock member 45 of the recording lever 23 does not engage with the engaging portion 7d of the switching lever 7. That is, since the switching lever 7 is in a position where the recording lever 23 cannot be locked, the recording lever 23 cannot be locked to the switching lever 7. Therefore, since the recording lever 23 is selectively locked according to the position state of the switching lever 7, it is possible to prevent deformation of components due to operation of the recording lever 23 in the reverse mode.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. The tape recorder of this embodiment is an auto-reverse tape recorder that enables recording only when the tape running direction is the forward direction, and enables reproduction in both the forward direction and the reverse direction. FIG. 1 is a diagram showing a state in which the switching lever 7 is located on the forward side.

In FIG. 1, reference numerals 1 and 2 denote capstans, and the capstans 1 and 2 rotate in the directions shown by arrows. 3 and 4 are pinch rollers (indicated by two-dot chain lines in the drawings)
The pinch rollers 3 and 4 have springs 5 and 6
Is mounted. The springs 5 and 6 always bias the pinch rollers 3 and 4 toward the capstans 1 and 2. The pinch rollers 3 and 4 have their support shafts 3a and 4
It is disposed so as to be rotatable around a as a fulcrum and to be able to contact and separate from the capstans 1 and 2. In addition, pinch rollers 3,
4, engaging portions 13, 1 of a head chassis 10 described later.
Engagement shafts 3b and 4b that engage with the shaft 4 are formed.

Reference numeral 7 denotes a switching lever 7 for selectively pressing one of the pinch rollers 3, 4 against the capstans 1, 2. As shown in FIGS. 1 and 2, the switching lever 7 is slidably arranged in the left-right direction. A spring 8 is connected to the left side, and a plunger 9 is connected to the right side.

The spring 8 always biases the switching lever 7 to the left. The plunger 9 is sucked by the output of a detecting means (not shown) for detecting the end of the tape running in one direction.
And slide it to the right.

The switching lever 7 is engaged with the engagement shafts 3b and 4b of the pinch rollers 3 and 4, and
A pinch roller regulating surface 7c for regulating the movement of the pinch 4 and slopes 7a and 7b connected to the pinch roller regulating surface 7c are formed (see FIG. 2). Slope 7a, 7b
Is for releasing the engaging shafts 3b, 4b of the pinch rollers 3, 4 from the pinch roller regulating surface 7c. And
When the engagement shafts 3b, 4b face the slopes 7a, 7b, the pinch rollers 3, 4 are pressed against the capstans 1, 2.

Further, as shown in FIGS. 1 and 2, the switching lever 7 is formed with an engaging claw 7d at the upper portion of the left end edge thereof.

Reference numeral 10 denotes a head chassis, and the head chassis 10 is slidably provided in the front-rear direction. A head 16 for recording and reproduction is mounted on the head chassis 10. The head chassis 10
Is provided with a play button 17 as shown in FIGS. 1 and 6A. FIG. 6A is a plan view of the head chassis 10.

A play lever 11 extends from the head chassis 10 on the opposite side (rear side) of the play button 17. At the tip of the play lever 11, an engagement claw 11a that engages with an engagement portion 32 of a control lever 31, which will be described later, is bent. In the head chassis 10, engagement portions 13, 14 are formed at portions corresponding to the engagement shafts 3b, 4b of the pinch rollers 3, 4, respectively. Further, the head chassis 10 is formed with an engaging portion 15 at a position corresponding to a later-described erasing head 18.

A spring 12 is mounted on the head chassis 10, and the spring 12 constantly biases the head chassis 10 forward.

The erasing head 18 is a head chassis 1
0 is disposed on the pinch roller 3 side (left side). The head 18 is arranged to be slidable in the front-rear direction.
A spring 19 is mounted on the head 18, and the spring 19 constantly biases the head 18 toward the capstan 1.

A control lever 20 controls the position of the head 18. As shown in FIGS. 1 and 3, the control lever 20 has an engagement claw 20b formed at the left end thereof. The engagement claw 20b is
It always comes into contact with the spring 40. The control lever 20 urges the head 18 forward by the spring 40. That is, the control lever 20 is arranged such that the tip thereof is engaged with the head 18 and the other end is engaged with the spring 40, respectively. Further, the control lever 20 is arranged to be tiltable about its support shaft 20a.

Reference numeral 22 denotes a recording button. The recording button 22 is slidably provided in the front-rear direction. As shown in FIGS. 1 and 5, a recording lever 23 is connected to the recording button 22, and a spring 25 is mounted on the recording lever 23. The spring 25 always has the recording lever 2
3 is biased rearward.

As shown in FIG. 1, the recording lever 23 has
A play release member 41 is provided at a position corresponding to an engagement portion 35 of the control lever 31 described later. This play release member 4
1 is a support shaft 23a of the recording lever 23 as shown in FIG.
Is rotatably supported.

As shown in FIGS. 1 and 5, the play releasing member 41 has an engaging claw 41a on the front side and an engaging portion 41b on the rear side. The engaging claw 41a is bent in the upright state. The play release member 41 is provided on the recording lever 23.
Locking pieces 23b and 23c are formed near the engaging claws 41a and the engaging portions 41b. This locking piece 23
The rotation of the play release member 41 is regulated at a fixed position by b and 23c.

Reference numeral 42 denotes a helical coil spring.
The play canceling member 41 is elastically mounted with the coil portion of the spring 42 fitted on the support shaft 23a. That is,
The spring 42 has one end engaged with the locking piece 23c and the other end engaged with the engaging claw 41a. The play canceling member 41 is constantly urged in the counterclockwise direction by the urging force of the spring 42. However, the play cancellation member 41
As shown in FIG. 1 and FIG.
Since it is regulated by 3b and 23c, it is held at the contact position.

As shown in FIG. 1, a lock member 45 is provided on the recording lever 23 at a position corresponding to an engaging claw 28a of a stop lever 28 described later. As shown in FIG. 5, the lock member 45 has a hook 45 at its distal end.
a, a release portion 45b is formed at the base end. In the lock member 45, an engagement claw 45c is formed to be bent upright in the vicinity of the center between the hook portion 45a and the release portion 45b.

The lock member 45 is rotatably supported by a support shaft 23d formed on the recording lever 23. Reference numeral 46 denotes a helix coil spring, and a lock member 45 is provided in a state where the coil portion of the spring 46 is fitted on the support shaft 23d.
Is armed. That is, the spring 46 has one end engaged with the locking piece 23e formed on the recording lever 23 and the other end engaged with the engaging claw 45c. And the lock member 4
5 is always urged in the counterclockwise direction by the urging force of the spring 46. However, as shown in FIGS. 1 and 5, the lock member 45 is restricted by the locking piece 23f formed on the recording lever 23, and is held at the contact position.

Further, as shown in FIG. 1, the recording lever 23 has an engaging claw 23g protruding from a portion thereof opposed to the spring 40 at the tip thereof.

Reference numeral 27 denotes a stop button. The stop button 27 is slidably provided in the front-rear direction. As shown in FIGS. 1 and 6B, a stop lever 28 is connected to the play button 27.
Is provided with an engagement protrusion 29 on its upper surface. The stop lever 28 is formed with an engaging claw 28a at the end thereof in an upright manner.

Reference numeral 31 denotes a control lever, which is disposed orthogonal to the play lever 11, the recording lever 23, and the stop lever 28. Also, a control lever 31 slidably arranged in the left-right direction.
Are arranged at positions corresponding to the engagement claws 11 a of the play lever 11 and the engagement protrusions 29 of the stop lever 28.

The control lever 31 has engagement portions 32 and 34 formed at portions corresponding to the engagement claws 11a and the engagement protrusions 29, respectively. These engaging portions 32, 34 are formed with engaging slopes 32a, 34a. Control lever 31
As shown in FIG. 1 and FIG. The engaging portion 35 has a substantially triangular planar shape.

The control lever 31 has a spring 3
The control lever 31 is always urged leftward by the spring 36.

In the stop state, as shown in FIG. 1, the pinch rollers 3 and 4 are separated from the capstans 1 and 2, and the engagement portions of the control lever 31 with the engagement claws 11a and the engagement protrusions 24 are provided. All engagement with 32 and 33 has been released.

When the play button 17 is pressed in this state, the stop state in FIG. 1 is changed to the play state (play mode) in FIG. That is, by pressing the play button 17, the head chassis 10 slides backward against the urging force of the spring 12. The control lever 31 engages with the engaging slope 32a and the engaging claw 11a of the play lever 11, so that the spring 3
Slide to the right against the urging force of 6. Further, when the play lever 11 is slid until the engagement claw 11a and the engagement portion 32 of the control lever 31 are locked, the control lever 31 slides to the right by the urging force of the spring 36. Locked by the control lever 31 (see FIG. 7).

In the state shown in FIG. 7, since the switching lever 7 is located on the forward side (left side), the engaging shaft 4b of the pinch roller 4 is at a position facing the engaging inclined surface 7b of the switching lever 7. That is, the pinch roller 4 has its support shaft 4
Capstan 2 tilting clockwise around a
Press against

In this state, since the movement of the engaging shaft 3b of the pinch roller 3 is restricted by the pinch roller restricting surface 7c of the switching lever 7, the pinch roller 3 and the capstan 1 are separated. .

When the plunger 9 is sucked after the tape running in the forward direction indicated by the arrow shown in FIG. 7 is completed, the switching lever 7 moves to the right, and the tape running is reversed (reverse direction). Then, in the state in which the reproduction is continued (play mode), as shown in FIG. 8, with the movement of the engagement shaft 4b of the pinch roller 4 and the switching lever 7 to the right,
The pinch roller 4 is guided to the pinch roller regulating surface 7c by the slope 7b, so that the pinch roller 4 and the capstan 2 are separated.

On the other hand, the pinch roller 3 tilts counterclockwise about its support shaft 3a, and the engagement shaft 3b of the pinch roller 3 is disengaged from the pinch roller regulating surface 7a of the control lever 7; It moves to the slope 7a side. Therefore, the pinch roller 3 and the capstan 1 are pressed against each other. Note that, in the play state, the position state of the control lever 31 is maintained.

Next, the state of the recording operation will be described with reference to FIGS.
It will be described based on. Forward mode (switch lever 7
Is pressed to the left of the recording button 22). Then, the engagement claw 41a of the play release member 41
Presses the engaging portion 31 of the control lever 31 to the right,
The control lever 31 moves rightward against the urging force of the spring 36.

Subsequently, when the recording button 22 is pressed, the lock member 45 is moved clockwise as shown by the two-dot chain line in FIG. To tilt. When the recording button 22 is further pressed, the hook portion 45a of the lock member 45 engages with the engaging claw 7d of the switching lever 7 to lock the recording lever 23 to the switching lever 7, as shown by the solid line in FIG. .

In this state, the engagement claw 23g of the recording lever 23 presses one end of the spring 40, and the engagement between the spring 40 and the control lever 20 is released.

When the play button 17 is pressed in this state, as shown in FIG.
8 also moves to the rear. That is, since the urging force of the spring 40 does not act on the control lever 20, the head 18 moves together with the head chassis 10 by the urging force of the spring 19. Further, when the play button 17 is pressed, the play claw 11 is locked by engaging its engaging claw 11 a with the engaging portion 32 of the control lever 31. As a result, a recording state (recording mode) as shown in FIG. 10 is obtained.

When the plunger 9 is sucked after the tape running in the forward direction is completed, the switching lever 7
Slides to the right as shown in FIG. Then, the hook portion 45a of the lock member 45 of the recording lever 23
The engagement between the switching lever 7 and the engagement claw 7d is released, so that the recording lever 23 is moved rearward by the urging force of the spring 25.

During the slide, the engaging claw 41a of the play releasing member 41 of the recording lever 23 and the engaging portion 35 of the control lever 31 are engaged. This engagement causes the play release member 41 to tilt clockwise around the support shaft 23a as shown in FIG. That is, the engagement claw 41a of the play release member 41 is
5, so that the play release member 41 rotates against the urging force of the spring 42.

At this time, since the position state of the control lever 31 is held, as shown in FIG. 11, when the engaging portion 32 and the engaging claw 11a of the play lever 11 are engaged (the play lever 11 Is locked).

Therefore, in this example, when the recording is completed and the tape running is reversed, only the recording mechanism is automatically released (the lock of the recording lever 23 is released), and
It becomes a play state in the reverse direction. Therefore, according to the present example, it can be surely confirmed that the recording state has been released by entering the play state.

According to the present embodiment, the play canceling member 41
Are rotatably arranged, so that the operation can be smoothly performed according to the operation direction of the recording lever 23.

To stop the recording state, the stop button 27 is pressed. Then, the stop lever 28 slides forward, so that the control lever 31
Under the control of No. 9, slide rightward (see FIG. 12). Therefore, the engagement between the engagement claw 11a of the play lever 11 and the engagement portion 32 of the control lever 31 is released.
The head chassis 10 moves forward. by this,
The pinch rollers 3 and 4 and the head 18 are attached to the head chassis 1.
It moves to the front side under the control of the engagement portions 13 to 15 of 0.

When the stop button 27 is further pressed,
The engagement protrusion 29 of the stop button 27 engages with the engagement portion 34 of the control lever 31, and the engagement claw 28 a of the stop button 27 presses the release portion 45 b of the lock member 45 of the recording lever 23. Therefore, as shown in FIG. 12, the lock member 45 rotates clockwise against the urging force of the spring 46. By this rotation, the engagement between the hook portion 45a of the lock member 45 and the engagement claw 7d of the switching lever 7 is released. Therefore, the recording lever 23 moves rearward by the urging force of the spring 25. Accordingly, the lock of the recording lever 23 is released, and a stop state as shown in FIG. 1 is established.

When the stop button 27 is pressed in the play state (the state shown in FIGS. 7 and 8), the stop lever 28 moves forward against the urging force of the spring 30.
Therefore, the engagement protrusion 29 is provided on the engagement slope 3 of the control lever 31.
4a. Then, the control lever 31 moves rightward against the biasing force of the spring 36. Therefore, the engagement between the engagement claw 11a of the play lever 11 and the engagement portion 32 of the control lever 31 is released. Therefore, the head chassis 10 is returned to the original position (the position shown in FIG. 1) by the urging force of the spring 12, and is brought into the stop state.

In this example, when the recording button 22 is pressed in the play state (the state shown in FIGS. 7 and 8),
As shown in FIG. 13 (showing the forward state), the engagement claw 41a of the play release member 41 presses the engagement portion 35 of the control lever 31 to the right. That is, since the engaging claw 41a is engaged with the engaging portion 35 so as to rotate in the counterclockwise direction, the play release member 41 is held in a state restricted by the locking piece 23b. Therefore, the engaging claw 41a is
Press 5.

The control lever 31 is connected to the spring 3
6 slides to the right against the urging force of the control lever 31 and the engaging claw 11a of the play lever 11
Is disengaged. Therefore, play lever 11
Is moved forward by the urging force of the spring 12.
As a result, the play state (the lock of the play lever 11) is released, and a stop state as shown in FIG. 1 is established.

When the recording button 22 is further depressed, FIG.
As shown in (5), the hook portion 45a of the lock member 45 of the recording lever 23 and the engaging claw 7d of the switching lever 7 are engaged to lock the recording lever 23. If it is desired to set the recording mode in this state, the play button 17 is pressed again.

On the other hand, unless the play button 17 is depressed in this state (the state shown in FIG. 9), the recording state shown in FIG. 10 does not occur.

Therefore, according to the present embodiment, when the recording button 22 is erroneously pressed in the play state, the play releasing member 41 of the recording lever 23 and the engaging portion 3 of the control lever 31 are used.
Since the pressing operation of the recording button 22 itself can be performed by engagement with the recording device 5, deformation of components such as the control lever 31 due to the recording operation in the play state can be prevented. Similarly, since the play release member 41 and the engaging portion 35 are engaged so that the play lever 11 can be positively unlocked and set to the stop state, trailing recording can be prevented.

Further, in this embodiment, even if the recording button 22 is pressed in a play state in the reverse direction, as shown in FIG.
5a and the engaging claw 7d of the switching lever 7 are separated (the switching lever 7 is in a position where the recording lever 23 cannot be locked), so that the recording lever 23 can be locked to the switching lever 7. Can not. Therefore, according to the present embodiment, since the recording lever 23 is selectively locked according to the position state of the switching lever 7, when the switching lever 7 is located on the reverse side, the lock member 45 and the switching lever 7 are connected. Without engagement, the deformation of the parts due to the pressing operation of the recording button 22 can be prevented.

[0057]

According to the present invention, a lock member is disposed at a portion of a recording lever corresponding to one end of a switching lever that moves to a forward side or a reverse side, and an engagement portion is formed at one end of the switching lever. Only when the lever is located on the forward side, the lock member engages with the engagement part of the switching lever to lock the operation state of the recording lever, so it is locked in the reverse mode where the switching lever is located on the reverse side. The member and the engaging portion of the switching lever do not engage, and the recording lever can be selectively locked in the position state of the switching lever. Therefore, according to the present invention, it is possible to prevent the deformation of parts due to the operation of the recording lever in the reverse mode.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment.

FIG. 2 is a plan view of the switching lever of the embodiment.

FIG. 3 is a plan view of the control lever of the embodiment.

FIG. 4 is a plan view of the control lever of the embodiment.

FIG. 5 is a plan view of the recording lever of the embodiment.

FIG. 6A is a plan view of a head chassis of the embodiment, and FIG. 6B is a plan view of a stop lever.

FIG. 7 is a diagram showing a play state at the time of forward of the embodiment.

FIG. 8 is a diagram showing a play state at the time of reverse in the embodiment.

FIG. 9 is a diagram illustrating a state of a recording operation according to the embodiment.

FIG. 10 is a diagram showing a recording state of the embodiment.

FIG. 11 is a diagram illustrating a use state of the embodiment.

FIG. 12 illustrates a use state of the embodiment (operation state of a stop button).
FIG.

FIG. 13 is a diagram illustrating a use state (a state in which a recording button is operated in a play state) according to the embodiment.

FIG. 14 is a diagram illustrating a use state of the embodiment.

[Explanation of symbols]

1,2 capstan 3,4 pinch roller 5,6,8,12,25,30,36,40,42,4
6 Spring 7 Switching lever 7d, 11a, 20b, 23g, 28a, 41a, 45
c Engagement claw 9 Plunger 10 Head chassis 11 Play lever 16, 18 Head 17 Play button 20, 31 Control lever 22 Record button 23 Record lever 27 Stop button 28 Stop lever 29 Engagement projection 32, 34, 35 Engagement part 32a , 34a engaging slope 41 play releasing member 45 locking member 45a hook portion 45b releasing portion

Claims (2)

(57) [Scope of request for utility model registration] 1. A pair of capstans, a pair of pinch rollers arranged to be in pressure contact with these capstans, a recording lever, a play lever, a control lever for locking the play lever, and the pinch roller An automatic reverse tape recorder capable of recording only when traveling in the tape forward direction, comprising: a switching lever that moves forward or reverse to selectively press one of the capstans against the capstan; and a switching lever. A lock member is arranged at a position of the recording lever corresponding to one end of the recording lever, and an engagement portion that engages with the lock member is formed at one end of the switching lever, and only when the switching lever is located on the forward side. The lock member engages with the engagement portion of the switching lever to lock the operation state of the recording lever. An automatic reverse tape recorder characterized in that it is configured to perform 2. A release member is provided on the lock member, and an engagement portion for engaging with the release portion is formed at a position of the stop lever corresponding to the release portion. When operating the lever, the engagement portion of the stop lever engages with the release portion of the lock member to release the engagement between the lock member of the recording lever and the engagement portion of the switching lever. The auto-reverse tape recorder according to claim 1.