JPS63249961A - Means for clamping disk player - Google Patents

Abstract

PURPOSE:To improve the reliability of the operation of a clamping means, by enabling a clamper to be lifted or lowered by utilizing the travel stroke of an operating member in a forward/backward direction as a driving source. CONSTITUTION:In a normal operation, the operation control pin 31b of a lock lever 31 is engaged with the locking part 50a of an operation control cam groove 50, and also, power transmission pins 31a are combined so as to be arranged in the stroke of the travel of the operating member 10 in the forward/ backward direction. When the operating member 10 is moved in a housing direction, a clamper start up cam part 30 is abutted with the lock lever 31 in the movement of the stroke, and the lock lever 31 is turned, and the locking of the movement in a protrusive housing direction is released. In such a way, it is possible to heighten the reliability of the operation of the clamping means remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a disc player in which a disc-shaped record carrier is conveyed to a playing position within the player body by a loading mechanism and is clamped and held by a clamper at the playing position. ,
The present invention relates to clamping means for holding a rotating disc-type record carrier for reproduction.

``Background Art'' A carrier is provided that can protrude from a player body and store a disk-type record carrier such as an audio disk-type record carrier having sound grooves on the surface or a digital audio disk-type record carrier on which a PCM signal is recorded. Disc players are already known which are provided with means for transporting a disc-shaped record carrier, which is held on top and transported to a playing position. In order to position the disc-shaped record carrier placed on the carrier 2 protruding from the outside of the disc player main body at the playing position, that is, on the spindle motor, it is necessary to A loading mechanism that moves and conveys in two directions is required. This loading mechanism includes means for positioning the disk-shaped record carrier and placing it accurately on the spindle motor 2, and then lowering and clamping the clamper from above, i.e., for precise timed movement. There is a need for a clamping means that does this.

The applicant previously proposed a support that is attached to the sub-chassis B on both the left and right sides of the disc player main body A and that moves back and forth and places the disc as shown in FIGS. 10(a) and (b). A clamper holder D is supported on the member C so that it moves synchronously with the movement of the support member C, and the clamper F is also moved in conjunction with the mounting movement of the disk-shaped record carrier G on the spindle motor E. It was of a type that was raised and lowered and clamped.

"Problems to be Solved by the Invention" The present invention provides a new loading mechanism in which the supporting member C, which is the basis of the movement of the loading mechanism as described above, does not move in the loading direction, that is, in the lifting direction. This is a completely newly developed clamping means for timely clamping. In other words, the present invention is a clamping means in a loading mechanism that is different from the method previously proposed by the applicant. Its feature is that it utilizes the retracting movement of the carry that holds the disk-type record carrier to automatically and reliably clamp the disk-type record carrier positioned on the spindle motor with a simple mechanism. When the carrier is not stored in the proper position, the locking mechanism is activated to prevent malfunctions such as inadvertent clamping.
The purpose is to improve the reliability of the operation of the clamping means.

"Means for Solving the Problems" As a means for solving the above-mentioned problems, the present invention provides a disc-shaped record carrier in a player body that incorporates a playing means including a spindle motor, a pickup, a converter, etc. It consists of a conveyance means that moves the carrier body to be held back and forth in the protruding storage direction and places it in the direction of the spindle motor at a predetermined rear position thereof, and a clamp means that clamps the disk-shaped record carrier on the spindle motor with a clamper. This is an improvement of the clamping means in a disc player having a loading mechanism.

The clamping means includes an actuation member with a driving force imparting function to the clamping means, a chassis provided with an actuation control function member, a clamp cam having a mechanism for converting back and forth movement into placement movement, and power transmission and speed change movement functions. The lock lever is assembled so that the clamper holder, which is the object to be operated, interlocks with the lock lever.

That is, the clamping means consists of the following constituent members.

By moving the carry body back and forth with the driving force applying means, the carry body is moved in the storage direction within the player body, and then the actuating member, which is a component of the conveyance means that is placed and moved toward the spindle motor, is moved in the storage direction and the protrusion direction. A clamper starting cam portion capable of transmitting driving force is provided.

The chassis provided in the player body is provided with an operation control cam groove having a lock portion that engages and guides the operation control pin, and a mounting movement guide groove that engages and guides the clamper holder to move up and down. .

The clamp cam mounted on the chassis so as to be slidable in the protruding and retracting direction is provided with an elevating guide cam hole through which the clamper holder moves up and down.

A lock lever rotatably mounted on the clamp cam.
a power transmission pin that contacts the clamper starting cam of the actuating member and transmits driving force; and a power transmission pin that engages with the actuation control cam groove;
An operation control pin is provided which contacts the lock engagement/disengagement guide cam surface and transmits the gear change movement instruction.

A clamper holder having a clamper in the center and a locking protrusion at the end is configured to be mounted in combination so that the locking protrusion engages with the lifting guide cam hole of the clamp cam. I'll keep it.

The clamping means according to the present invention is further constructed by combining the above-mentioned constituent members so as to operate as follows.

In normal times, the actuation control pin of the lock lever is engaged with the lock portion of the actuation control cam groove, and the power transmission pin is assembled so as to be disposed during the stroke of the actuating member moving back and forth.

When the actuating member is moved in the retracting direction, the clamper starting cam comes into contact with the lock lever during the stroke movement, and as the actuating member continues to move, the lock lever rotates and the actuating control pin is moved to the locking part of the actuating control cam groove. The clamp cam is disengaged from the clamp cam and moved in the storage direction via the lock lever that is guided to engage with the operation control cam groove, thereby lowering the clamper holder that engages with the lifting guide cam hole and moving the clamp cam to the clamper holder. The disk type record carrier is configured to be clamped on the spindle motor by the attached clamper.

Thereafter, by moving the actuating member in the protruding direction, the clamp cam is moved forward together with the lock lever that is guided to be engaged with the actuation control cam groove to release the clamping state,
Raise the clamper holder. When the clamp holder has finished rising, the lock lever is rotated to lock the clamp cam from moving back and forth, and the lock lever is released from contact with the clamper starting cam so that the actuating member is clamped. This clamping means for a disc player is characterized in that it is configured to be movable in the projecting direction regardless of the means used.

"Function" In the above configuration, the carrier holding the disc-shaped record carrier is moved backward (in the direction of the arrow Y) to be stored inside the player body, and then moved in the loading direction (in the direction of the arrow 2). In order to carry out a series of moving operations, the driving force applying means is driven to move the actuating member backward (in the direction of the arrow Y). During this rearward stroke movement of the actuating member, the power transmission pin of the lock lever comes into contact with the clamper starting cam portion provided on the actuating member at a proper position on the movement trajectory, completing the assembly of the power transmission structure. Therefore, the subsequent forward and backward movement stroke of the actuating member is used as a driving force to unlock, lower the clamper holder, generate and hold the clamping force, release the clamping force, and release the clamper until the power transmission structure is disassembled. Various clamping operations of the clamping means according to the present invention, such as raising the holder, locking, and disassembling the power transmission structure, are performed in sequence.

That is, a series of clamping operations are performed by applying a driving force by moving the actuating member in the retracting direction, and conversely, by applying a driving force by moving the actuating member in the projecting direction,
Perform a series of engraved movements.

When the actuating member is moved in the retracting direction, the clamper starting cam comes into contact with the lock lever during the stroke movement, obtains a lateral component from the applied driving force in the retracting direction, and rotates the abutting lock lever. Then, remove the operation control pin from the lock part of the operation control cam groove to release the lock for movement in the protruding and retracting direction.

Subsequently, a vertical component of the driving force for moving the actuating member in the storage direction is obtained, and the clamp cam is moved in the storage direction via a lock lever that is engaged and guided by the actuation control cam groove. Then, the clamper holder is lowered by the lifting guide cam hole and the lifting guide groove in which the locking protrusion engages.

As a result, the clamper mounted on the clamper holder descends and clamps the disk-shaped record carrier between itself and the spindle motor. As long as the clamp cam does not move at the stored position, the clamper maintains the lowered state, and thus maintains the clamped state.

Further, when the performance is over and it is desired to release the clamped state and take out the disk-shaped record carrier, the actuating member is moved in the projecting direction to apply a driving force and the un-ramp operation is performed as follows.

A longitudinal component is obtained from the driving force of the actuating member, and the clamp cam is moved forward together with the lock lever guided by the actuation control cam groove to release the clamping state due to the clamping force and raise the clamper holder.

Next, when the clamper holder has been raised,
A lateral force is obtained from the driving force of the actuating member, and the lock lever is
・Turn to engage the operation control pin with the lock part of the operation control cam groove to lock the clamp cam from moving in the front-rear direction.

Furthermore, a longitudinal component force is obtained from the driving force of the actuating member to disengage the lock lever from contact with the clamper starting cam portion, thereby releasing the assembled state of the power transmission structure. This allows the actuating member to move in the projecting direction regardless of the clamping means.

"Example" Next, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the disc player of the present invention includes a carrier body 3 that holds and transports a disc-shaped record carrier from the front inside a player body 2 that incorporates a playing means 1 including a spindle motor 1a, a pickup 1b, etc. is moved back and forth in the protruding storage direction (Y arrow direction and counter-Y arrow direction), and at a predetermined rear position within the player body 2, the spindle motor direction (Z arrow direction and counter-Z arrow direction) is moved.
This is a front-loading type disc player having a loading mechanism 4 consisting of a conveying means for placing and moving the disc onto a spindle motor 1a, and a clamping means 7 for clamping the disc by a clamper 22 after placing the disc on a spindle motor 1a. The present invention is an improved technique regarding the clamping means 7 which is a part of the loading mechanism 4 of the disc player.

Note that the directions described in this specification and drawings are as follows: arrow Y direction is forward, arrow X direction is leftward, and arrow Z direction is upward, and the present invention will be explained based on these directions. .

First, the configuration of the loading mechanism 4 will be outlined so that the relationship between the clamping means and the conveying means according to the present invention, as well as its overall position and basic structure can be understood.

As shown in FIG. 1, the loading mechanism 4 according to this embodiment has components divided into two parts: a player body 2 and a carry body 3, with the former having a carry body support and guide means 5; A driving force applying means 6 and a clamping means 7 are provided, and the latter is provided with a carry frame 8, a container 9, and an actuating member 10.

Hereinafter, each component will be briefly explained. The carry body supporting and guiding means 5 is configured to insert the separately formed carry body 3 as shown in FIGS. 1 and 2 through the front opening 11 of the player body 2. This is a means for supporting the chassis 12 in a predetermined position when it is moved in the front and back direction and can be stored in a protruding manner. Runout control roller 1
5 and a supporting member 5 provided with a support member 5.

The driving force applying means 6 includes a motor 18 as a driving source;
An intermediate drive gear 19 that transmits the rotational force of the motor 18 and changes speed.
and a drive gear 2 that meshes with this intermediate drive gear 19 and applies the transmitted driving force to the drive rack 20 of the carrier body 3.
1, and is the only driving source for all operations of the loading mechanism 4.

The clamping means 7 is arranged as shown in FIGS. 1 and 2.
Immediately after the carrier holding the disc-shaped record carrier 16 is moved and placed on the spindle motor la, which is the performance position, the clamper 22 is placed on the disc-shaped record rejecting body 16.
This is to lower the clamp and clamp it with a predetermined clamping force. The basic technical problem required for this clamping means 7 is how to realize timely lifting and lowering and reliable generation of ramp force. That is, the present invention is a part of the loading mechanism of a disc player, and is the structure of the clamping means 7 provided in the player body 2 and its operating mechanism.

Next, the three constituent members constituting the loading mechanism 4 provided on the carrier body 3 side will be explained.

As shown in FIGS. 1 and 2, the carry frame 8 has a disk holding hole 8a in the center of the plane for holding the disk-shaped record carrier 16 and guiding it in the loading direction, and has holes on both left and right sides. , a pin receiving groove 23 and a roller receiving groove 24 are formed to correspond to the vertical vibration regulating pin 14 and the lateral vibration regulating roller 15 of the support member 5, and to fit and guide them in the front and rear direction. establish. On both sides of the back side of the carry frame 8,
A lock pin 25 and an engaging IF section 26 are provided, an operating member mounting section 27 is formed, and a blind wall is formed on the front side section 28 (as shown in FIG. 2).

The container 9 is formed with a disc mounting part 9b having a playing means exposing window hole 9a in the center thereof, and locking pins 29 which are spaced apart from each other in the front-rear direction and project from the left and right sides of the disc mounting part 9b. 1 inclination guide cam hole 10 of actuating member 10
a and is guided by the inclined guide cam hole 10a to move in the vertical direction, that is, in the storage direction (as shown in FIGS. 1 and 2).

The actuating member 10 is an elongated body 10b, and has a drive rack 20 formed on its lower surface in the front-back direction to mesh with a drive gear 21, and a locking pin 29 of the container 9 spaced apart from each other in the front and rear. It consists of an engaging inclined guide cam hole 10a, a sliding guide groove 10c provided in the center, and a clamper starting cam part 30 that comes into contact with the power transmission pin 31a of the lock lever 31 provided at the lower part. The guide groove 10c is slidably attached to the guide groove 10c. The drive rack 20 meshes with the drive gear 21 when the carry body 3 is inserted into the player body 2.
This is for storing and moving the carry body 3 in the front-back direction and further sliding the actuating member 10 rearward along the carry frame 8 after the carry body 3 has finished moving in the front-back direction by the stopper 17. It is.

Second, the clamping means 7 according to the present invention will be explained in detail.

As mentioned above, the clamping means 7 of the present invention not only solves the basic technical problems of timely lifting and lowering operations and reliable generation of ramp force, but also solves the problems of moving the carrier body 3 back and forth. Using the stroke as a driving source,
In addition, there is no need to prepare a special drive source for the clamping means 7, and the operation of the clamping means 7 such as starting and ending the operation, the generation and holding of the clamping force, and the operation timing are all performed by mechanical means, and limiters etc. The mechanism for operating is located along the side wall of the carrier body 3, both side walls and the top surface of the chassis 12, and does not take up much space. When the member 10 is not housed in a predetermined position within the player body 2, the locking mechanism is activated to prevent the clamping means 7 from moving inadvertently.

The clamping means 7 of the embodiment shown in FIGS. 1 to 8 according to the present invention is arranged symmetrically with respect to the clamper 22 that clamps the disk-shaped record carrier 16, and has the same structure on the left and right sides. Only one side will be explained.

As shown in FIGS. 1 to 5, the clamping means 7 includes an actuating member 10 provided with a clamper starting cam portion 30 having a driving force imparting function, a chassis 12 provided with an actuation control function portion 34, and a chassis 12 that is movable back and forth. A clamp cam 32 having a mechanism for converting a clamp into a mounting movement, a lock lever 31 having a power transmission and speed change movement function, and a clamper holder 33 which is an object to be operated are assembled in such a manner that they interlock with each other. .

That is, the clamping means 7 consists of the following constituent members.

By moving the carrying body 3 back and forth by the driving force applying means 6, the carrying body 3 is moved in the storage direction within the player body 2, and then moved to the operating member 10, which is a component of the conveying means, which is placed and moved in the direction of the spindle motor 1a. A clamper starting cam portion 30 is provided which can transmit driving force in the storage direction (counter-Y arrow direction) and the protrusion direction (Y-arrow direction). The clamper starting cam section 30 is provided on a suitable rear lower surface of the actuating member IO, and has a storage power transmission cam surface 30a that can transmit driving force in the storage direction (direction opposite to the Y arrow) and a storage power transmission cam surface 30a that can transmit the driving force in the storage direction (direction opposite to the Y arrow) (shown in FIG. 5(d)).

Since the actuating member 10 is a multi-mechanical part, it has various configurations, but among them, a clamper starting cam part 30 that can transmit the driving force is provided to a suitable rear lower surface of the elongated body tob. The drive rack 20 of the operating member 10 is the drive gear 2
1 and moves the carry body 3 in the front-rear direction, and after the carry body 3 finishes moving in the front-rear direction by the stopper 17, the actuating member 10 is further slid rearward along the carry frame 8. The point at which the stroke is caused is the component of the clamping means 7 (FIGS. 1 and 2).

In addition, as shown in FIG. 1, a driving force applying means 6 for causing a stroke in which the actuating member 10 slides in the front-rear direction at the rear;
In other words, the drive motor 18, the intermediate drive gear 19, the drive gear 21, and the synchronized gears 36 provided at both left and right ends of the rotating shaft are also indirect constituent members of the clamping means in that they are drive sources for moving the operating member itself. It is.

On the other hand, as shown in FIGS. 1, 3, and 5, a chassis 12 provided in the player body 2 has an operation control pin 31b locked at one end for engaging and guiding the clamping means 7. An operation control function section 34 is provided, such as an operation control cam groove 50 having a section 50a and a mounting movement guide groove 51 that engages and guides the clamper holder 33 to move up and down. The former is located on the planar portion 12a of the chassis 12, and the latter is located on the vertical portion 12b of the chassis 12. A clamp cam 3, which will be described later, is provided on the plane portion 12a of the chassis 12.
A clamp cam sliding recess 35 is formed in which the clamp cam 2 is slidably mounted, and the operation control cam groove 50 has a guide groove path 50d in which the operation control pin 31b moves while being fitted therein.
, a lock engagement guide cam surface 50b formed on one side edge of the guide groove path 50d, a biasing force guide cam surface 50c formed on the other side edge, and a lock engagement guide cam surface 50c formed on the front end thereof. It is composed of a lock part 50a. The lock engagement/disengagement guide cam surface 50b is designed as a reference instruction surface that guides and controls the direction in which the operation control pin 31b operates, the operation timing, engagement and disengagement with the lock portion, etc., and is a biasing force applying guide cam surface. 50c is designed as a reference indicating surface that biases the operation control pin 31b so that it is always guided while being in contact with the locking/disengaging guide cam surface 50b (see FIG. 5).
b).

In other words, all of the constituent members of the clamping means 7 formed on the chassis 12 are the operation control function section 34 having a function for controlling the operation.

Next, as shown in FIGS. 1 to 5, the clamp cam 32 is attached to the clamp cam sliding recess 35'' of the chassis 12 so as to be slidable in the protruding and retracting direction.
It is provided with an elevating guide cam hole 32b that engages with the locking protrusion 33a of the clamper holder 33 to move up and down. As shown in FIGS. 3, 4, and 5 (c), the clamp cam 32 is an L-shaped plate formed along the shape of the chassis 12, and the vertical portion 32e thereof has a The lifting guide cam hole 32b is formed. The lifting guide cam hole 32b is formed by a through hole that is inclined in two steps in the lifting direction, including a gently sloped part and a steeply sloped part, and the clamper holder 33 that fits into this lifting guide cam hole 32b is It moves up and down by the left and right movement of the up/down guide cam hole 32b.

Further, the flat part has a lock lever pivot bearing hole 32a for rotatably attaching the lock lever 31, and a through window hole 32c for a power transmission pin, and a sliding guide protrusion 3 is provided on the side surface thereof.
2d is formed. In other words, the clamp cam 32
has an elevating operation function that obtains a predetermined stroke movement in a timely storage and protruding direction from the driving force generated by the longitudinal movement of the actuating member, and converts this into a timely elevating movement of the clamper holder 33. This is a component for a clamping means.

Next, the lock lever 31 is rotatably mounted on the clamp cam 32 via its lock lever pivot bearing hole 32a, as shown in FIGS. 1, 3, and 5 (b). . The lock lever 31 has a pivot protrusion 31d that serves as a rotational fulcrum at the base of the plate-like piece, and a power transmission pin that abuts the clamper starting cam portion 30 of the actuating member 10 and transmits the driving force at its free end. 31a, and the operation control cam groove 50.
An operation control pin 31b is provided which engages with the lock engagement/disengagement guide cam surface 50b and transmits the gear change motion instruction by contacting the lock engagement/disengagement guide cam surface 50b. In the illustrated embodiment, the power transmission pin 31a protrudes toward the clamp cam 32, passes through the power transmission pin through window 32c of the clamp cam 32, and engages with the clamper starting cam portion 30 of the operating member 10. The operation control pin 3
1b is formed to protrude toward the chassis 12 and engages with the operation control cam groove 50. In addition, the biasing body 3 of the lock lever 31
1c, when the clamp cam 32 is in the locked state, the operation control pin 31b is moved to the lock portion 5 due to vibration or impact from the outside.
This is to ensure that the operation control pin 3 does not deviate from 0a.
It is not necessary to always press 1b against the lock engagement/disengagement guide cam surface 50b. In other words, the lock lever 31 is a component that transmits power to the clamping means and has a speed change movement function for each component.

Next, the clamper holder 33 is a plate-shaped body 33b having a length corresponding to the left and right vertical chassis, and has the clamper 22 in the center thereof and a locking protrusion 33a at the end. Two of the locking protrusions 33a are formed separately on one side in correspondence with the A lowering guide cam hole 32b of the clamp cam 32, and are mounted in combination so as to engage therewith. However, one of the locking protrusions 33a is formed into a long length, and engages with the elevation guide groove 51 provided in the vertical surface portion 12b of the chassis 12, and the clamper holder 33
is regulated so that it can only move in the vertical direction. In addition, a magnet 52 and a yoke 5 are installed at the bottom of the clamper 22.
3 is attached to the spindle motor 1a, forming a magnetic circuit 55 together with a magnetic plate 54 attached to the spindle motor 1a, and generates a ramp force when the disk-shaped record carrier 16 is clamped.

The clamping means 7 according to the present invention is further configured to combine the above-mentioned components so as to operate as follows.

The clamp cam 32 equipped with the lock lever 31 is slidably mounted on the operation control function section 34 provided in the chassis 12, that is, the clamp cam sliding recess 35, and the operating member 10 is placed above the clamp cam 32 in a protruding storage direction. Assemble to move back and forth,
Further, the clamp cam 32 is configured to engage a clamper holder 33, and in normal times, the operation control pin 31b of the lock lever 31 is connected to the lock portion 50 of the operation control cam groove 50.
a, and the power transmission pin 31a is assembled so as to be disposed during the stroke in which the actuating member 10 moves back and forth. In the illustrated embodiment, the lock lever 31 is mounted below the clamp cam 32, that is, between the chassis 12, but it may of course be mounted above the clamp cam 32.

Then, when the actuating member 10 is moved in the storage direction, the clamper starting cam part 30 comes into contact with the lock lever 31 during the stroke movement, and the lock lever 31 rotates, so that the actuating control pin is moved into the actuating control cam groove 50. lock part 50 of
a, the lock for movement in the protruding storage direction is released, and then the clamp cam 32 is moved in the storage direction via the lock lever 31, which is guided to be locked in the operation control cam groove 50, and engaged therewith. The clamper holder 33 is lowered, and the disc-shaped marking m body 16 is clamped on the spindle motor 1a by the clamper 22 attached to the clamper holder 33.

Thereafter, by moving the actuating member 10 in the protruding direction, the clamp cam 32 is moved forward together with the lock lever 31 guided by the actuation control cam groove 50 to release the clamping state, and the clamper holder 33 is moved forward. raise. When the lifting of the clamper holder 33 is completed,
The lock lever 31 is rotated to lock the movement of the clamp cam 32 in the front-back direction, and further, the lock lever 31 is released from contact with the clamper starting cam portion 30, and the actuating member 1
This clamping means for a disc player is characterized in that the clamping means 7 can be moved in the projecting direction regardless of the clamping means 7.

"Operation of the Embodiment" Next, the operation of the illustrated embodiment configured as described above will be described.

A series of clamping operations are performed by applying a driving force by moving the operating member 10 in the retracting direction, and conversely, a series of unclamping operations is performed by applying a driving force by moving the operating member 10 in the projecting direction.

FIG. 6(A) shows that the driving force applying means is actuated to move the actuating member 10 in the storage direction (in the direction of the arrow Y), and during the stroke movement, the clamper starting cam part 30 is moved to the lock lever.
31 is shown.

This completes the assembly of the power transmission structure for applying the driving force from the driving force applying means, which is the only driving source of the loading mechanism, to the clamping means.

FIG. 6(b) shows the clamper starting cam part 3 of the operating member lO.
0 is in a state when it moves a little in the storage direction (in the opposite direction of the Y arrow) while contacting the lock lever 31.

Subsequently, when the actuating member 10 is moved in the storage direction, the storage power transmission cam surface 30a of the clamper starting cam portion 30 contacts the power transmission pin 3 of the lock lever 31 during the stroke movement.
1a, a lateral component of the transmitted driving force is obtained, and the abutting lock lever 31 is rotated H. At this time,
The storage power transmission cam surface 30a is configured to be in contact with the front-rear movement direction as an inclined surface. Therefore, the actuation control pin 31b rotates in the direction of inclination by receiving a driving force, disengages from the lock portion 50a of the actuation control cam groove 50, and releases the lock of movement in the protruding and retracting direction.

Furthermore, at this time, since the biasing body 31c applies a biasing force to the lock lever 31, the operation control pin 31b is always in pressure contact with the lock engagement/disengagement guide cam surface 50a and controls its movement. It turns out.

FIG. 6(C) shows the clamper starting cam portion 3 of the operating member IO.
0 further moves in the storage direction (in the direction of the arrow Y) while contacting the lock lever 31.

Further, when the actuating member 10 is moved in the retracting direction, a vertical component of the driving force is obtained, and the clamp cam 32 is also moved in the retracting direction via the lock lever 31 guided by the actuation control cam groove 50. Note that the movement of the clamper holder 33 is limited to only the vertical direction by movement of the clamp cam 32 by the vertical guide cam hole 32b and the vertical guide groove 51 with which the locking protrusion 33a engages. As a result, the clamper 22 attached to the clamper holder 33 descends and is placed on the disk-shaped record carrier, and the disk-shaped record carrier is ramped by the attraction force of the magnetic circuit 55 inside the clamper 22 (
Figure 7).

In this state, the hole end of the actuating member 10 contacts and presses the clamp completion switch 56 fixed to the chassis 12.

Therefore, the motor 18 driving the actuating member 10 stops and the clamping operation is completed. Therefore, motor 1
8 is started and the actuating member moves, and the clamp cam 32
As long as the clamper 22 does not move in its storage position, the clamper 22 remains in the lowered state, so that the clamped state is maintained (as shown in FIG. 4).

FIG. 6(d) shows the clamper starting cam portion 3 of the operating member 10.
0 is in a state when it moves a little in the protrusion direction (Y arrow direction) while contacting the lock lever 31.

When the performance is finished, the actuating member 10 is moved in the projecting direction in order to release the clamped state and take out the disk-shaped record carrier. As a result, the lock lever 31 moves its power transmission pin 31a to the protruding power transmission cam surface 3 of the actuating member IO.
0b to apply a driving force to complete the configuration and perform an unclamping operation.

FIG. 6(E) shows the clamper starting cam portion 3 of the operating member 10.
0 moves in the protrusion direction (Y arrow direction) while contacting the lock lever 31.

The actuation control pin 31b is brought into contact with the protruding power transmission cam surface 30b of the actuating member 10, and a longitudinal component force is obtained from the driving force, and the clamp cam 32 is actuated with an actuation control force and the lock lever 31 guided by the groove 50. At the same time, the clamper holder 33 moves forward to relieve the pressure on the clamper holder 33 to lower it, release the clamping state caused by the clamping force, and raise the clamper holder 33. Note that the protruding power transmission cam surface 30b forms an inclined surface with respect to the protrusion storage direction, and can obtain both a longitudinal component force and a lateral component force.

Subsequently, when the lifting of the clamper holder 33 is completed, a lateral force is obtained from the driving force of the actuation member 10, and the lock lever 31 is rotated to move the actuation control pin 31b to the lock portion 50a of the actuation control cam groove 50. , and the movement of the clamp cam 32 in the front-rear direction is locked.

Furthermore, by moving the actuating member 10 in the projecting direction (Y arrow direction), a longitudinal component of the driving force is obtained, and the lock lever 31 is disengaged from the clamper starting cam section 30, thereby changing the assembled state of the power transmission structure. Let it be canceled. As a result, the actuating member 10 becomes free and can move in the projecting direction regardless of the clamping means.

"Other Embodiments" In the above embodiments, the clamping means components such as clamp cams and lock levers are arranged symmetrically on both sides of the chassis 12, and the clamper holder is moved up and down together on both the left and right sides. The present invention is not limited to this embodiment.

As shown in FIG. 8, the locking protrusion provided at the end of the clamper holder 33 is provided only on one side, and the other end is provided with a rotation shaft 56, which is rotatably attached to a bearing portion 57 on the chassis. It's okay. As a result, the number of parts can be reduced, and since the clamper holder 33 can be attached to the chassis by only rotating with a degree of freedom l, positional accuracy and operation reliability during clamping are improved.

In the embodiment described above, the two elevating guide cam holes 32b forming a pair of clamp cams 32 were made to have the same shape, and the clamper 22 was moved up and down in parallel without changing its posture. However, as shown in FIG. The shapes of the elevation guide cam holes 32b may be changed so that the clamper holder 33 and the clamper 22, which are engaged with the elevation guide cam holes 32b, can be held from one end. In the embodiment described above, the clamping force is generated by the magnetic circuit 55, and when lifting the clamper 22, a large force is required to separate the magnet 52 and the plate 54 into a parallel state. It can reduce the load.

``Effects of the Invention'' As described below, the present invention provides an actuating member with a clamper starting cam portion capable of transmitting driving force in the retracting direction and the ejecting direction, and a chassis provided within the player body has an actuating member. An operation control cam groove with a lock portion at one end that engages and guides the control pin, and a mounting movement guide groove that engages and guides the clamper holder to move up and down, allowing it to slide freely on the chassis in the protruding and retracting direction. The clamp cam attached to the clamp cam is provided with an elevating guide cam hole through which the clamper holder moves up and down, and the lock lever rotatably attached to the clamp cam comes into contact with the clamper starting cam of the operating member and receives driving force. A clamper holder having a clamper in the center is provided with a power transmission pin that transmits a power transmission pin, and an operation control pin that engages with the operation control cam groove and abuts on the lock engagement/disengagement guide cam surface to transmit the speed change movement instruction. , a locking protrusion is provided at the end thereof, and the locking protrusion is configured to be mounted in combination so as to engage with the lifting guide cam hole of the clamp cam,
In normal times, the control pin of the lock lever is engaged with the lock part of the operation control cam groove, and the power transmission pin is arranged so that it is located during the stroke of the actuating member moving back and forth, and when the actuating member is moved in the storage direction. During the stroke movement, the clamper starting cam comes into contact with the lock lever, and as a result, the abutting lock lever rotates to release the zero movement in the protruding and retracting direction, and then the clamp cam becomes the actuation control cam. The clamper holder is lowered by moving in the storing direction via the guided lock lever, so that the disc-shaped record carrier is clamped on the spindle motor by the clamper attached to the clamper holder, and then the actuating member is projected. By moving the clamp cam forward together with the lock lever guided by the operation control cam, the clamping state is released, the clamper holder is sealed upward, and when the lifting is completed, the lock lever is rotated. to lock the clamp cam from moving in the front-back direction, and further to separate the lock lever from contact with the clamper starting cam part so that the actuating member can move in the projecting direction regardless of the clamping means. This is a clamping means for a disc player.

In other words, by using the movement stroke of the actuating member in the front and back direction as a drive source, the clamper can be raised and lowered without a separate drive source, which reduces the number of parts and reduces cost and space. It was also possible to save money.

Further, regarding the timing at which the present invention is activated, since the driving source is used as the actuating member, the setting is simple and reliable. This is because the actuating member also serves as a driving source for the back and forth movement of the carrier body and the loading movement of the container, and is a member that controls the movement. In the case of the present invention, when the carry is stored at a predetermined position within the player body, the clamper descends to follow the container immediately after it starts moving, and the disc-shaped carrier is placed on the spindle motor. Ideally, the timing is such that the clamper is clamped immediately, but in order to synchronize the descent of the clamper with the movement of the carrier body and container, it is necessary to drive each of these components. The most reliable and rational method is to use the same member to drive the motor. Since the present invention has an ideal structure in which the actuating member is used as a common driving member, it has great features in terms of good timing and reliability of movement.

The present invention performs almost all of its operations by mechanical means. That is, a major feature is that generally expensive electrical parts or means are not used. Moreover, the mechanism is installed in a narrow space along the outer periphery of the product, such as the side or ceiling surface, and is designed not to use the space in the center of the product, resulting in a compact overall shape with no waste. has been done.

Furthermore, at this time, the control pin of the lock lever is engaged with the lock portion of the operation control cam groove, and the power transmission pin is assembled so as to be disposed during the stroke of the movement of the operation member back and forth,
When the actuating member is moved in the retracting direction, the clamper starting cam portion comes into contact with the lock lever during the stroke movement, and the abutting lock lever rotates to release the protruding movement lock in the retracting direction. Since it is composed of
When the disk-type record carrier is not housed in the proper position, the locking mechanism is activated and does not cause a malfunction such as inadvertent clamping, so the reliability of the operation of the clamping means is extremely high. Become.

As mentioned above, the present invention is characterized in that it embodies a high-performance product that is economical and has a streamlined shape.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the assembled components of the entire disc player equipped with a clamping means according to the present invention, FIG. 2 is a perspective view showing the components of the clamping means housed in a carrier body, and FIG. The figure is a perspective view of the main parts showing the constituent members of the clamp means stored and equipped in the player body, and FIGS. 4(a) and 4(b) are side perspective views showing the assembled state of the clamp means stored and equipped in the player body. , (a) shows the state when the clamper holder is raised, (b) shows the state when the clamper holder is lowered, and Fig. 5 (a) to (d) show the clamping means. (A) is a plan view showing the components of the clamping means provided on the chassis, (B) is the lock lever 1, (C) is the clamp cam, and is a perspective view that continuously shows the operation of each component of the means. 7 is a partially longitudinal side view showing a magnetic circuit of a part of the clamper, FIGS. 8(a) and (b) are transparent perspective views showing other embodiments of the present invention, and FIG. FIGS. 1A and 1B are perspective side views showing the operating state of another embodiment, and FIGS. 1A and 1B are perspective side explanatory views showing the clamping means in the separate opening mechanism. "Description of the symbols of the main components" 1... Performance means 2... Player body 3... Carry body 5... Carry body support and guide means 6... Driving force applying means 7... Clamping means 10 ... Actuation member 22 ... Clamper 30 ... Clamper starting cam part 31 ... Lock lever 31a ... Power transmission pin 31b ... Operation control pin 32 ... Clamp cam 32a ... Lock lever Pivot bearing hole 32b... Lifting guide cam hole 33... Clamper holder 33a... Locking protrusion 50... Operation control cam groove 50b... Lock engagement/disengagement guide cam surface 51... Placement movement guide groove

Claims (1)

[Claims] A carrier body that holds a disk-shaped record carrier is moved back and forth in a protruding and retracted direction within a player body that has built-in playing means including a spindle motor, a pickup, etc. In a disc player having a loading mechanism comprising a transport means for loading and moving in a direction, and a clamp means for clamping a disc-shaped record carrier on a spindle motor with a clamper, the clamp means is moved back and forth by a driving force applying means. , a clamper activation cam portion capable of transmitting driving force in the storage direction and the protrusion direction to an actuating member that is a component of a conveying means that moves the carry body in the storage direction in the player body and then places and moves it in the direction of the spindle motor; The chassis provided in the player body has an operation control cam groove having a locking portion that engages and guides the operation control pin, and a placement movement guide that engages and guides the clamper holder to move up and down. The clamp cam is provided with a groove and is mounted so as to be able to slide freely on the chassis in the protruding and retracting direction.The clamp cam is provided with an elevating guide cam hole through which the clamper holder moves up and down, and is rotatably mounted on the clamp cam. The lock lever includes a power transmission pin that contacts the clamper starting cam of the actuating member and transmits driving force, and a power transmission pin that engages with the actuation control cam groove,
The clamper holder is provided with an operation control pin that comes into contact with the lock engagement/disengagement guide cam surface and transmits the speed change movement instruction, and has a clamper in the center and a locking protrusion at the end. The protrusion is installed in combination so that it engages with the lifting guide cam hole of the clamp cam, and during normal times, the operation control pin of the lock lever is engaged with the lock part of the operation control cam groove, and the power transmission pin is operated. The members are assembled so that they are arranged during the stroke of moving back and forth, and when the actuating member is moved in the retracting direction, the clamper starting cam comes into contact with the lock lever during the stroke movement, and by the subsequent movement, the lock lever is activated. rotates to disengage the actuation control pin from the lock part of the actuation control cam groove, and move the clamp cam in the storage direction via the lock lever that is guided into engagement with the actuation control cam groove, thereby raising and lowering the clamp cam. By lowering the clamper holder that engages with the guide cam hole, causing the disk-shaped record carrier to be clamped on the spindle motor by the clamper attached to the clamper holder, and then moving the actuating member in the projecting direction, The clamp cam is moved forward together with the lock lever, which is guided to engage with the actuation control cam groove, to release the clamping state, and the clamper holder is raised, and when the raising is completed, the lock lever is rotated to release the clamp cam. A disc player characterized in that movement in the front and back direction is locked, and further, the lock lever is released from contact with the clamper starting cam part, so that the actuating member can move in the projecting direction regardless of the clamping means. clamping means.