JPS6344350A - Holder shifting device in recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent a defect such as the damage of a switch by fitting a nut member to operate a switch to control a motor for driving a holder shifting member to the holder shifting member. CONSTITUTION:While a right left side plate 2 retreats to a substrate 7, a switch operating lever 17 is pushed, then, a locking plate 19 is turned in the counter- clockwise direction against a spring force, therefore, a claw 17a of the operating lever 17 is shifted without being engaged with a claw 19a of the locking plate 19, a power source switch 16 is turned on and a motor 12 starts to rotate. Thus, since a screw lever 11 is rotated through a belt 13, a nut member 9 screwed with the screw lever 11 is shifted in the forward direction. Thus, one side fitting plate 6, in which the nut member 9 is fitted, is guided and shifted to a guide bar 8 and a right side plate 2, in which the fitting plate 6 is fixed, is shifted. Consequently, even a left side plate linked through the right side plate 2 and a chassis 1 is guided and shifted to the guide bar 8. Namely, the whole including the chassis 1 is guided and advanced to the guide bar 8.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a cassette holder for introducing a compact cassette, digital audio cassette, etc. into a tape recorder when loading the cassette into the tape recorder. The present invention relates to a holder moving device in a recording and reproducing device in which a drive mechanism for a holder moving member is improved.

[Conventional technology]

Conventionally, one method for loading a cassette into a tape recorder is to project a holder moving member on which a cassette holder is formed to the front side of the tape recorder body, set the cassette in this protruding cassette holder, and then move the holder moving member. The cassette is loaded into the tape recorder main body by retracting the tape recorder.

By the way, when the above-mentioned holder moving member is stored in the tape recorder main body, it is desirable that the front panel of the holder moving member and the front panel of the tape recorder main body are flush with each other. Since a motor is used to drive the members, there is a problem in that the inertia of the motor causes variations in the stopping position of the holder moving member, and the panels are not always flush with each other.

As a solution to this problem, for example, there is a method disclosed in Japanese Utility Model Publication No. 12608/1983.

This allows the holder moving member to stop the motor by operating the IJ switch, and the holder moving member further retreats due to the inertia of the motor, so that the front surface of the holder moving member and the panel are flush with each other. Eggplant.

Further, the rotation of the screw rod for moving the holder moving member and the movement of the nut member screwed into the screw rod due to the inertia of the motor are absorbed by the spring force of the spring.

[Problem that the invention seeks to solve]

By the way, in the above-mentioned publication, the holder moving member stops the motor by operating a limit switch, and the holder moving member is stopped by the inertia of the motor, so if there is variation in the inertia of the motor, the holder The front surface of the moving member and the panel may not necessarily be flush with each other; in other words, since inertia is used, even if motors with equal inertia are used,
The amount of movement of the holder moving member varies due to the frictional force and play between the holder moving member and the drive member that moves it. Therefore, as the variation due to aging increases, the front surface of the holder moving member becomes more and more There was a problem in that it was difficult to make it flush with the panel surface.

[Purpose of the invention]

The present invention aims to solve the above-mentioned problems, and after stopping the holder moving member, a switch of the motor that drives the holder moving member is operated, and the inertia of the motor is absorbed by the switch. Therefore, the front surface of the holder moving member and the panel surface can be made flush with each other, and even if the holder moving member is pushed in the stored state, no unreasonable force is applied to the switch. It is an object of the present invention to provide a holder moving device for a recording and reproducing device that does not cause damage due to the holder movement.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention includes a stopper for stopping a holder moving member at a predetermined position, which is attached to a chassis, and moves against the holder moving member stopped by the stopper against the spring force of a spring. The gist of the present invention is that a nut member for operating a switch for controlling the motor for driving the holder moving member is attached to the holder moving member.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
4, l is a chassis to which a cassette holder (described later) is attached, 2, 2 are left and right side plates placed on the left and right sides of the chassis 1 (only one is shown in FIG. 1), 3 .3 is a slider placed in the gap between the left and right side plates 2, 2 and the chassis 1 (also only one is shown in Fig. 1) to connect the left and right side plates 2, 2 and the chassis 1. Since the pins la and la pass through guide holes 3a and 3a formed in the slider 3°3, the sliders 3 and 3 are formed to be slidable relative to the chassis 1 and the left and right side plates 2 and 2. has been done.

Reference numeral 4 denotes a gear shaft whose both ends are inserted into the elongated holes 2a, 2a of the left and right side plates 2, 2, and small gears 4a, 4a that mesh with teeth 3b, 3b formed on the lower surface of the slider 3°3.
, and a large gear 4b that meshes with a pinion 5a of a motor 5 fixed to a mounting plate (not shown) attached to either the left or right side plates 2, 2. As a result, when the motor 5 is rotated, the small gear 4a is rotated via the pinion 5as and the large gear 4b, so the sliders 3, 3 meshed with the small gear 4a slide. Here, if the meshing positions of the tooth portions 3b, 3b of the pair of sliders 3, 3 and the small gears 4a, 4a of the gear shaft 4 are shifted, the sliders 3, 3
A problem arises in that the amount of protrusion is different. Therefore, in the present invention, the hole into which the gear shaft 4 is inserted is replaced with the elongated hole 2a, 2
a, by moving the gear shaft 4 so that the pinions 4a, 4a do not mesh with the teeth 3b, 3b, and with the slider 3.3 in the most protruding state or in the retracted state, The gear shaft 4 is returned to its original position so that the gear shaft 4a meshes with the teeth 3b, 3b, and is then supported by a bearing 6a formed on a mounting plate 6, which will be described later (see FIGS. 5 and 6).

Reference numeral 6.6 denotes a mounting plate (only one is shown in FIG. 1) screwed to the outside of the left and right side plates 2, 2, and guide holes 6b, 6b formed on the front surface are connected to the board 7. It is guided by fixed guide bars 8, 8 and is attached so as to be movable relative to the substrate 7. Also, this mounting plate 6, 6
One mounting plate (the right mounting plate in Figure 1)
A semi-cylindrical guide tube 6C with one end closed is formed in the guide tube 6C, and a guide groove 6d is formed in the guide tube 6C.

Reference numeral 9 denotes a small number of internal threads 9c inside which the guide rod 9a inserted into the guide tube 6c is attached via the connecting piece 9b.
(FIG. 7), a protruding piece 9d is formed on the opposite side corresponding to the guide rod 6b. and,
The guide rod 9a of the nut member 9 is inserted into the guide cylinder 6c while the connecting piece 9b is guided into the guide groove 6d. Next, when the mounting plate 6 is attached to the side plate 2 with the spring 10 inserted, the bent piece 2 formed on the end surface of the side plate 6
b closes the opening of the guide cylinder 6c, so the spring 10 and the nut member 9 are housed in the guide cylinder 6C.

Reference numeral 11 designates a screw rod that is rotatably supported on the base plate 7, the middle part of which is screwed into the female thread 9C of the nut member 9, and the tip end of the rod screwed into the female thread 9C of the nut member 9. Jlla is installed. This Boo IJ 11a is a motor 12 fixed to the board 7.
Boo! A belt 13 is wound around J12a. Therefore, since the mounting plates 6, 6 are guided by the guide bars 8, 8, when the motor 12 is rotated, the belt 1
When the screw rod 11 is rotated via the screw rod 3 and the nut member 9 meshed therewith is moved, the mounting plate 6.6 is moved. As a result, the left and right side plates 2, 2 to which the mounting plates 6, 6 are attached move, so that the chassis 1 moves via the bin 1a.

Reference numeral 14 and 15 denote a switch attached to the board 7, which controls the motor 12 by turning it on and off using the protruding piece 9d of the oak iffl material 9.

Reference numeral 16 denotes a power switch fixed to the substrate 7, which is pressed once and turned on when the pressing force is released, and turned off when pressed again and the pressing force is released. 1
Reference numeral 7 designates a switch operating rod slidably attached to the board 7, one end protruding from the front surface of the panel 18, and the rear end corresponding to the power switch 16. Reference numeral 19 denotes a lock plate rotatably supported by the base plate 7, and the claw portion 1
9a is adapted to engage with a claw portion 17a formed on the switch operating rod 17. The lock plate 19 also includes a protrusion 1g5e formed on the mounting plate 6 described above, and a protrusion 1g5e formed on the mounting plate 6 described above.
, 6 are formed at the left end in the figure.

A spring 20 biases the lock plate 19 in a direction in which the claw portion 19a is engaged with the claw portion 17a. Therefore,
When the mounting plates 6, 6 are retracted, that is, when the chassis 1 is retracted, the engagement piece 19b of the lock plate 19 is rotated by the protrusion 6e of the mounting plate 6 against the spring force of the spring 20. Since the claw portion 19a is out of the range of movement of the claw portion 17a of the switch operating rod 17, when the switch operating rod 17 is operated from the front of the panel 18, the switch operating rod 17 freely moves back and forth to close the power switch 16. operate. That is, the power is turned on and off, and all operations are started or stopped. In addition, when the chassis 1 is moving forward, the protrusion 6e of the mounting plate 6 moves away from the position of the lock plate 19, so the lock plate 19 is rotated by the spring 20, and the claw part 19a is rotated by the switch operation lever. 1
It is located within the movement range of the claw portion 17a of No.7. Therefore,
When the switch operation rod 17 is pressed, the switch operation rod 1
The claw portion 17a of No. 7 comes into contact with the claw portion 19a of the lock plate 19. Here, the lock plate 19 has the claw parts 19a, 17a and the protruding position of the claw parts 19a, 17a.
When the 17a come into contact with each other, they are rotated against the force of the spring 20Φ, and the claw portion 17a passes through the claw portion 19a. Then, when the pressing force on the switch operating rod 17 is released, the switch operating rod 17 is moved back by the restoring force of the power switch 16, but this time the claws 19a and 17a are engaged, so that the switch operating rod 17 is It stops midway (see Figure 8). As a result, the power switch 16 remains in its previous on state without being switched. In this state, the mounting plate 6 moves back and the engagement portion 19 of the protrusion 6e and the lock plate 19
b is engaged and rotated against the spring force of the spring 20, the claw portion 19a of the lock plate 19 and the switch operating rod 1
7 is disengaged from the claw portion 17a. Therefore, the switch operating rod 147 is moved back by the restoring force of the power switch 16, so the power switch 16 is switched to the OFF state (
(See Figure 9).

Reference numeral 21 denotes an arm whose one end is rotatably supported on the inner surface at the front of the chassis 1, and a protrusion 21a is formed at the other end, and this protrusion 21a forms a curved hole 1b formed in the chassis 1. The left and right side plates 3 are protruded through the
, 3 are inserted into the 7-shaped guide grooves 3c, 3c. 22 is a first cassette holder for holding a cassette such as a digital audio tape, and a second cassette holder.
By screwing it to the cassette holder 23, a rectangular space is formed in the front view into which the cassette is inserted. Further, the second cassette holder 23 is pivotally supported by the other end of the arm 21 at a protruding portion 23H, and a spring force is applied by a spring 24 in the opening direction (upward in the figure). Reference numeral 25 denotes a rotating arm formed in a U-shape in plan view, and an arm portion 25a.
The base side of each cassette holder is pivotally supported by the chassis 1, and the distal end side of each is pivotally supported by a protruding portion 23a of the second cassette holder 23. Further, a protruding piece 25b formed at the middle portion of the arm portion 25a is inserted into a long hole 21b formed in the arm 21.

The first cassette holder 22 has a hole 22a for a reel shaft to be inserted into the IJ-reel of a loaded digital audio chip cassette, and a stopper 22b for positioning the cassette and a cassette lid. A protrusion 22C is formed to shift a part of the cassette in order to open the cassette.

Reference numeral 26 is a dog-shaped ratchet arm that is pivotally supported on the outer surface of one of the right side plates 3, and is biased counterclockwise by a spring 27 so that the engaging piece 26a is stopped in a substantially horizontal state. The other end is in contact with a protrusion g3d formed on the right side plate 3. Reference numeral 28 denotes a substantially flat slider drive arm pivotally supported on the inner surface of the shimmer 1, and a triangular protrusion 28a formed on the outer surface is attached to the chassis 1.
It protrudes from the curved hole IC formed in the hole IC, and faces the engagement piece 26a of the ratchet arm 26. Also,
On the upper surface of the slider drive arm 28, an engaging protrusion 2 that protrudes upward from a long hole 1d formed at a corner of the chassis 1 is provided.
8b is formed.

Reference numeral 29 designates a slider arm that is pivotally supported on the upper surface of the chassis 1, and has a notch 29a formed at one end to be engaged with the engaging protrusion 28b of the slider drive arm 28, and a protrusion 29b formed at the other end. has been done. Reference numeral 30 denotes a cassette ejecting plate slidably attached to the upper surface of the chassis 1, and is always biased in the backward direction by a spring 31. Further, the notch 30a formed in the cassette ejection plate 30 has a protrusion 2 of the slider arm 29.
9b is engaged.

Next, to explain the operation based on the above configuration, now,
When the switch operating rod 17 is pressed in a state where the chassis 1 shown in FIGS. is rotated counterclockwise against the spring force of the spring 20, so that the claw 17 of the switch operating rod 17
a moves without being engaged with the claw 19a of the lock plate 19. Therefore, the power switch 16 is turned on and the motor 12 starts rotating. When the motor 12 rotates, the belt 1
3, the screw rod 11 is rotated, so that the screw rod 11
The nut member 9 screwed together moves forward. As a result, one of the mounting plates 6 (on the right side in FIG. 1) to which the nut member 9 is attached moves while being guided by the guide bar 8, so the right side plate 2 to which this mounting plate 6 is fixed moves. . Therefore, right side plate 2 and chassis 1
The right side plate 2 connected via the guide bar 8 also moves while being guided by the guide bar 8. That is, the entire chassis including the chassis 1 moves forward while being guided by the guide bars 8, 8.

Then, as described above, the mounting plate 6 moves forward, and the protrusion 9d
When the operator operates the switch 15, the power to the motor 12 is cut off, and the entire movement stops regardless of whether the power switch 16 is in the on state (Fig. 10, 1).
(See Figure 1).

However, in this state, since the first and second cassette holders 22, 23 do not protrude from the chassis 1, a cassette cannot be loaded. Therefore, when an eject switch (not shown) is operated, the motor 5 is energized, and the gear shaft 4 is rotated via the pinion 5a and the large gear 4b. When the gear shaft 4 is rotated, the pinion 4a.

4a is rotated, pins 1a and l are attached to the left and right side plates 2 and 2.
The sliders 3, 3 supported by a move back. Here, when the sliders 3, 3 move back, the sliders 3,
The protrusions 21a, 2 guided by the guide grooves 3c, 3c of No. 3
1a is the guide groove 3c.

Guide A3C because it shifts along the shape of 3C.

When located at the inclined portion 3C, the protrusions 21a, 21a rise. Therefore, the arm 21 on which the protrusions 21a, 21a are formed is rotated clockwise in the figure because one end is pivotally supported by the chassis 1. When the arm 21 is rotated, the arm 21, the second cassette holder 23, the rotating arm 25, and the shaft supporting portion of the chassis 1 form a substantially parallelogram, so that the second cassette holder 2
3 is a protrusion 21a that responds to the retreat of the sliders 3,3.

21a moves along the inclined portions of the guide grooves 3c, 3c.

When the second cassette holder 23 reaches the horizontal portion of the guide groove 3C93C, the second cassette holder 23 stops rising and maintains a state in which it protrudes from the chassis 1. Therefore, the tape cassette is placed between the first and second cassette holders 22.
．． 23 (see FIG. 12).

Note that when the first and second cassette holders 22 and 23 are open, the protrusion 21a of the arm 21 is in the guide groove 3c of the slider 3, 3.

Since the cassette holders 22 and 23 are located in the horizontal part of the cassette holder 3C, even if an unreasonable force is applied to the 11th and 23rd cassette holders 22 and 23 from above, they will not fall.

On the other hand, when the sliders 3 and 3 move backward, the slider 3
, 3 moves backward, and the protrusion 28a of the slider drive 28 located on the movement locus of the ratchet arm 26 comes into contact with the engagement piece 26a, causing the slider drive arm 28 to move as shown in the figure. Rotate counterclockwise. Here, slider drive arm 28
When the slider arm 29 is rotated, the slider arm 29 that is engaged with the engagement protrusion 28b is rotated by the engagement protrusion 28b formed on the slider drive arm 28, so that the slider arm 29 can freely slide relative to the chassis 1. Attached cassette ejection plate 30
is moved forward against the spring force of the spring 31. This cassette ejection plate 30 is connected to the first and second cassette holders 22.
Since the cassette discharge plate 3 is located at the opening of the cassette discharge plate 3,
0 advances, its tips are inserted into the first and second cassette holders 22.23, and if a cassette is loaded in the gap, they come into contact with the front surface of the cassette and push it out. (See Figure 13). Then, when the slider 3 moves further forward, the engagement piece 26 of the ratchet arm 26
a is disengaged from the protrusion 28a, and the engagement piece 26a moves rearward from the protrusion 28a. As a result, the slider drive arm 28 returns to its original position via the cassette discharge plate 30 and the slider arm 29 due to the spring force of the spring 31. Therefore, the cassette ejection plate 30
It retreats from the gap in the cassette holder 22, 23.

Next, when a cassette (for digital audio) is loaded with the first and second cassette holders 22 and 23 pushed up, the lock piece formed on the cassette is moved by the protrusion 22C of the first cassette holder 22. When the cassette is released, a portion of the cassette is engaged by the stopper 22b, so that when the cassette is pushed in, a portion of the cassette is displaced and the lid can be opened.

In this state, when a play switch (not shown) is operated, the motor 5 starts rotating in the opposite direction to the above and moves the sliders 3, 3 forward. When the sliders 3, 3 move forward, the protrusion 21a of the arm 21 guided by the guide grooves 3c, 3c descends, so that the second cassette holder 23 and the rotating arm 25, which are pivotally supported by the arm 21, are in a horizontal state. descend. When this descent is completed, the cassette lid comes into contact with a protrusion (not shown) formed on the chassis 1 and is opened, and a tape pull-out claw (not shown) operates to pull out the tape and hang it on the rotating head. Turn.

On the other hand, when the sliders 3, 3 move forward, the ratchet arm 26 comes into contact with the protrusion 28a of the slider drive arm 28;
Since the surface that contacts the protrusion 28a is tapered, the engagement piece 26a is rotated against the spring force of the spring 27 and passes without being engaged with the protrusion 28a.

Therefore, since the cassette ejection plate 30 remains in the retracted position without moving, the cassette loaded in the gap between the first and second cassette holders 22, 23 will not be ejected.

In this state, the cassette tape can be played back or recorded by rotating the reel stand (not shown) and rotating the rotary head.

In the above state, the chassis 1 protrudes from the panel 18, so in order to store the chassis 1 within the panel 18, a storage switch (not shown) is operated. As a result, the motor 12 rotates in the opposite direction to that described above, so the threaded rod 11 rotates in the opposite direction via the belt 13, and the nut member 9
This starts retracting from engagement with the female screw 9C.

In addition, in the engagement between the screw rod 11 and the female thread 9c of the nut member 9, the female thread 9C has one thread or two threads.
Even if the parallelism between the guide bar 8 and threaded rod 11 is lost due to a dimensional error of the parts, the movement of the nut member 9 will not be hindered because there are only a few threaded parts.

As mentioned above, when the nut member 9 retreats, the nut HE
Since the mounting plate 6 on which the material 9 is supported moves back, the left and right side plates 2
, 2, the chassis 1 is also moved backward. When the left and right side plates 2, 2 move backward, the rear ends of the left and right side plates 2°2 first come into contact with the stopper 7a formed on the base plate 7, and the left and right side plates 2.
, 2 stops.

Therefore, the chassis 1 and the mounting plates 6, 6 also stop, and the front surface of the chassis 1 reaches a predetermined position. That is, it does not protrude from the front surface of the panel 18 and always stops at a fixed position. However, in this state, the motor 12 is still rotating, so the nut member 9 is held in place by the spring 10.
It continues to move backwards against the spring force. Then, when the protruding piece 9d of the nut member 9 comes into contact with the switch 14, the switch 14 is turned off, so that the power to the motor 12 is cut off and the rotation of the motor 12 is stopped. Therefore,
Each member including the chassis 1 is housed inside the panel 18, and reproduction, recording, etc. are performed in this state (see FIG. 14).

〔Effect of the invention〕

As described above, in the present invention, after the holder moving member comes into contact with the stopper and stops, the nut member attached to the holder moving member operates the switch for controlling the motor, and the inertia of the motor is applied to the nut member. Since the spring force of the provided spring is used to absorb the force, the front surface of the holder moving member is always flush with the panel surface, and it also prevents the user from accidentally pushing the holder moving member after it has been retracted. However, since the holder moving member is prevented from moving by the stopper, it does not have any effect on the switch, and therefore has the effect of preventing malfunctions such as damage to the switch.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is a plan view of the assembled state, Fig. 3 is a side view, Fig. 4 is a front view, and Fig. 5 is a field view of the gear. 6 is a front view of the same as above; FIG. 7 is an enlarged sectional view showing the engagement state of the screw rod and the nut member; FIG. 8 is a plan view showing the power switch in the locked state; Fig. 9 is a front view showing the same as above in the released state, Fig. 10 is a plan view showing the state in which the holder protrudes forward, Fig. 11 is a side view of the same as above, and Fig. 12 shows the state in which the holder is raised in the same as above. FIG. 13 is a plan view showing a state in which the cassette in the holder is ejected;
FIG. 14 is a plan view showing the entire storage state. DESCRIPTION OF SYMBOLS 1... Chassis, 2... Left and right side plates, 3... Slider, 4... Gear shaft, 6... Mounting plate, butt... Guide bar, 9... Nut member, 14.15. ...Switch, 16...Power switch, 17...Switch operating rod, 19...Lock plate, 21...Arm, 22...
First cassette holder, 22... Second cassette holder, 25... Rotating arm, 26... Ratchet arm, 28... Slider driving arm, 29... Slider arm, 30...・Cassette ejection plate. Patent applicant: Pioneer Corporation Figure 5 Figure 6 Cause 09a d Figure 7

Claims (1)

[Claims] In a recording and reproducing apparatus having a holder moving member for exchanging and loading the recording medium by protruding a holder portion for storing the recording medium from the front surface of the panel, a screw rod that is driven and rotated is screwed with the screw rod. Along with being
A nut member is attached to the holder moving member so as to be movable with a spring bias in a thrust direction, and the holder moving member is forced to a predetermined position by rotation of the threaded rod via the nut member. a stopper that stops the holder moving member, and a switch that is operated by the nut member that moves against the spring bias by the screw rod even after the holder moving member is stopped by the stopper, and stops the rotation of the screw rod. A holder moving device in a recording and reproducing device, characterized by comprising: