JPS63251957A - Clamping means for disk player - Google Patents

Abstract

PURPOSE:To eliminate an error in mechanical accuracy and shaking of the titled clamping means and spring property, deformation, and wear of the forcing means of a mechanical control mechanism, by providing the forcing means and a forcing body controlling section to the mechanical control mechanism and causing the mechanism to operate while it is brought into contact with a lock engaging and releasing cam face. CONSTITUTION:This clamping means is constituted in such a way that a clamp cam 32 which cooperates with a lock lever 31 moves forward and backward at a prescribed location and makes clamping operations under a condition where the timing is controlled following the operation of the lock lever 31 and, at the same time, a forcing body 31c and forcing body controlling section 34 are respectively provided at appropriate locations of the lock lever 31 and a chassis 12, both of which re constituent members of this clamping means, and the forcing force of the forcing body 31c can act only at locations just before and after the point where the controlling section 34 is engaged with the released from a lock section 50a. The operation controlling section 34 is caused to operate while it is brought into contact with a lock engaging and releasing cam face 50b. Therefore wrong operations can be prevented in the clamping and un-clamping operations and operations of good timing can be always carried out in a controlled state.

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 disk-shaped record carrier placed on the carry protruding outside the disk player main body at the playing position, that is, on the spindle motor, 1. A loading mechanism that moves and conveys in two directions is required. This loading mechanism includes a means for positioning the disc-shaped record carrier and placing it accurately on the spindle motor, 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 lamp means as shown in FIGS. 8(a) and 8(b). A clamper holder D is supported on a support member C of a conveying means C that is attached to the sub-chassis B on both the left and right sides of the disc player main body A and moves back and forth and places the device. In this system, the clamper F was moved up and down in conjunction with the mounting movement of the disk-shaped record carrier G on the spindle motor E to clamp it. As mentioned above, the integrated type in which the clamping means is attached to the supporting member C, which is a component of the transporting means, and its operation is linked, integrates two functions, the transporting means and the clamping means, which are originally separate. Although it is easy to determine the timing of the movements of both, there are disadvantages in that the configuration of the conveying means becomes complicated, and since both means move, it is difficult to accurately position the clamping means and provide means to prevent malfunction. Ta.

Therefore, the applicant has researched a separate type in which the conveying means and clamping means are configured separately, and several new types of loading mechanisms having conveying means and clamping means have been developed.

One of them is the recently developed clamping means according to the present invention. This is a new loading mechanism in which the supporting member C, which is the basis of the movement of the loading mechanism, does not move in the loading direction, that is, in the lifting direction. It was developed. 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.

The first feature is that the disk-type record carrier positioned on the spindle motor can be automatically and reliably clamped by utilizing the storage operation of the carry that holds the disk-type record carrier. That is, the present invention is characterized in that the entire loading mechanism is driven by a single motor, and the driving force of the clamping means is obtained from the driving force applying means of the conveying means.

Second, the timing interlocking of the conveying means and the clamping means, the locking and disengaging operations, the lifting and lowering operations of the clamp, and the control of a series of these movements are controlled by the clamp cam, the lock lever, and the operation control cam groove. , etc., and is characterized by the fact that everything is done mechanically.

Third, the conveying means and clamping means are basically separated, and each is operated independently by a dedicated member, thereby simplifying the assembly structure and ensuring the reliability of each operation. It has characteristics.

Fourthly, the present invention is characterized in that a structural member having a control function including a locking mechanism is provided so that the clamping means always operates in a proper position and in a well-controlled manner.

"Problems to be Solved by the Invention" Although the clamping means according to the present invention has many features as described above, there are still major technical problems that must be overcome. By adopting a system in which the conveying means and the clamping means were separated, the operation of each became reliable, but the interlocking of the conveying means and the timing of the operation of both became difficult technical issues. It's here. For this purpose, the applicant provided the clamping means according to the present invention with a component having a control function including a locking mechanism, but since this was done by mechanical means, mechanical problems such as rattling and backlash may occur. There are issues such as how to eliminate errors, as well as obstacles to smooth operation caused by wear and resistance of parts during engagement and sliding.
Problems such as wasteful energy consumption have arisen.

In other words, how can the operation control section of the lock lever that engages with the operation control cam groove provided in the chassis faithfully trace the lock engagement/disengagement cam surface, which is the design standard surface, and operate with high precision? A major technical challenge was to develop a technology that could simultaneously overcome the contradictory requirements of how to reduce wear and resistance.

To this end, the present invention provides a biasing means in a component having a control function, and at the same time also includes a structure for controlling the timing at which the biasing means acts, thereby applying the bias only at a point. The purpose of this is to achieve both high-precision operation that improves reliability and efficient and smooth movement through the action of force 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 clamp means includes a lock lever that is rotatably connected to a clamp cam that moves back and forth at a predetermined position along a chassis provided in the player body, so that the attached clamp holder moves up and down to operate the clamp. and the lock lever is provided with a driving force transmission part and an operation control part, the driving force transmission part is engaged with an actuation member that transmits the driving force in a timed manner, and the operation control part is provided in the chassis. The lock lever is engaged with an actuation control cam groove having a locking portion and a locking/disengaging guide cam surface, and a timed driving force is applied to the lock lever by moving the actuating member backward in the storage direction. The actuation control part of the lock lever is engaged and guided by the actuation control cam groove, and is rotated to release the lock and move backward at a predetermined position, and conversely causes the actuating member to move forward in the protruding direction. When a temporary driving force is applied to the lock lever, the lock lever moves forward at a predetermined position and locks by rotation while its operation control part is engaged and guided by the operation control cam groove. With the operation of the lock lever, the cooperating clamp cam moves back and forth at a predetermined position in a WII manner, thereby performing a timed clamp operation.

In the present invention, the clamping means configured as described above is further equipped with a biasing means that operates in a timed manner. That is, a biasing body is provided on one of the lock levers and the chassis, which are constituent members of the clamping means, and a biasing body control section is provided on the other, and the operation control section engages and disengages the locking section. This clamping means for a disc player is characterized in that a biasing force is applied only in the forward and backward directions, and the operation control section operates while being in contact with a locking/disengaging cam surface.

The outline of the present invention includes an actuation member that applies a driving force to a clamping means, a chassis provided with an actuation control mechanism member, and one
The left side of the clamp cam has a mechanism that converts back-and-forth movement into loading movement, and the clamp means is assembled so that the lock lever with power transmission and variable speed movement functions and the clamper holder, which is the object to be operated, are interlocked. By providing a time-acting biasing means, the operation of the lock lever and the clamp cam is improved in terms of timing and accuracy, as well as smoothness of movement, light weight, and energy saving.

"Function" The present invention configured as described above drives the driving force applying means and moves the actuating member backward (in the opposite direction of the Y arrow) to move the carrier body holding the disk-shaped record carrier into the player main body. This is a clamping means in a front-loading type conveying means that moves backward (in the direction of the arrow opposite to Y) to store the object in the container, and then moves in the direction of placement (in the direction of the arrow opposite to Z).

The clamping means is such that during the rearward stroke movement of the actuating member, the power transmission part of the Rosi lever comes into contact with the actuating member at a proper position on the movement trajectory, completing the assembly of the power transmission structure and obtaining driving force. I can do it. Therefore, using the subsequent back and forth movement stroke of the actuating member as a driving force, the lock can be unlocked until the power transmission structure is disassembled.
Lowering the clamper holder, generating and maintaining clamping force,
Various clamping operations of the clamping means according to the present invention, such as releasing the clamping force, lifting the clamper holder, locking it, 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 operating member in the retracting direction, and conversely, a series of unclamping operations is performed by applying a driving force by moving the operating member in the projecting direction. ,
In order to achieve both accuracy and smoothness of movement, the control reference is reliably contacted and guided only at the point of movement.

To explain the above action more specifically, when the actuating member is moved in the storage direction, the lock lever is activated during the stroke movement.
The lock lever is brought into contact with the power transmission part, and a lateral force is obtained from the applied driving force in the storage direction, and the lock lever that comes into contact is rotated. The rotation of the lock lever disengages the operation control section from the lock section of the operation control cam groove and releases the lock of movement in the protruding and retracting direction.

Subsequently, when the actuating member moves in the storage direction, a vertical component is obtained from the applied driving force to move the lock lever, which is guided into engagement with the 1-actuation control cam groove, in the storage direction. Since it is attached to the clamp cam, the clamp cam also moves in the storage direction and lowers the clamper holder.

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.

In operation of the lamp means as described above.

When the lock lever rotates to disengage the actuation control part from the lock part of the actuation control cam groove and release the lock for movement in the protruding and retracting direction, and for a short period of time when the lock lever begins to move in the retracting direction, The biasing body guided by the biasing body control unit applies biasing force to the lock lever, so that the operation control unit operates while being guided into contact with the lock engagement/disengagement cam surface,
This controls the clamping operations of the row, flavor, clamp cam, and clamper holder that are configured to interlock with each other.

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 unclamping operation is performed as follows.

Obtaining a longitudinal component from the driving force of the actuating member, the clamp cam is moved in the protruding direction together with the lock lever guided by the actuation control cam groove to release the clamping state due to the clamping force,
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
is rotated to engage the actuation control part with the locking part of the actuation control cam groove, thereby locking the movement of the clamp cam in the front-back direction.

With the unclamping operation body of the ramp means as described above, the lock lever moves in the protruding direction while engaging the operation control part with the operation control cam groove, and when it moves to the vicinity of its terminal end, the lock lever is continuously moved. Until the actuation control part is rotated to engage the locking part of the actuation control cam groove, the biasing body guided by the biasing body control part is engaged with the lock lever.
The actuation control section is guided into contact with the locking/disengaging cam surface of the actuation control cam groove by applying a biasing force to the lock lever, clamp cam, and clamper holder that are configured to interlock with each other. Controls the unclamping operation of.

Furthermore, a longitudinal component is obtained from the driving force of the actuating member,
The locking lever is disengaged from the abutment to release the assembled state of the power transmission arrangement, thereby allowing the actuating member to move in the projecting direction independently 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 player main body 2 which has a built-in playing means l including a spindle motor 1a, a pickup 1b, etc., and a carrier for holding and transporting a disc type Q carrier from the front. The body 3 is moved back and forth in the protruding storage direction (Y arrow direction and counter-Y arrow direction), and the mounting is moved in the spindle motor direction (Z arrow direction and counter Z arrow direction) at a predetermined rear position within the player body 2. The present invention is a front-loading type disc player having a loading mechanism 4 consisting of a conveying means for transporting the disc, and a clamping means 7 for placing the disc in the direction of the spindle motor and clamping the disc by a clamper 22. This is an improved technique regarding the operation control of the clamping means 7 which is a part of the loading mechanism 4 of the 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 described 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 is a separate type in which the component parts are divided into two parts: a player body 2 and a carry body 3, and the former has a carry body support guide means 5 and a carry body support 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.

Each component will be briefly explained below.

The carry body supporting and guiding means 5 is configured so that the carry body 3, which is formed separately as shown in FIGS. 1 and 2, is inserted into the front opening 11 of the player body 2 and moved in the front and back direction, so that the carry body 3 can be protruded and stored. This is a means for supporting the chassis 12 in a predetermined position when the chassis 12 is in the right and left sides, and is a support member that is provided with a vertical vibration regulating pin 14 and a lateral vibration regulating roller 15 on an L-shaped plate 13 disposed on both left and right sides of the chassis 12. It consists of 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.

As shown in FIGS. 1 and 2, the clamping means 7 clamps the disc-shaped record carrier 16 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. This is for lowering the clamper 22 onto the carrier 16 and clamping it with a predetermined clamping force. The basic technical issues that require this clamping means 7 are:
The question is how to achieve timely lifting and lowering and reliable generation of ramp force. That is, one aspect of the present invention is the configuration of the clamping means 7, which is part of the loading mechanism of a disc player, and is provided on 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 bottle 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 bin 25 and a locking part 26 are provided to form a single operating member mounting part 27, and a blind wall is further formed on the front side part 28 (as shown in FIG. 2).

The container 9 has a disc mounting part 9b having a playing means exposure window 9a in the center thereof, and locking bins 29 which are spaced apart from each other in the front and back directions on both left and right sides of the disc mounting part 9b. , the inclined guide cam hole 10 of the actuating member lO
a and is guided by the inclined guide cam hole 10a to move in the vertical direction, that is, in the mounting 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-rear 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 back. The carry frame 8 consists of an engaging inclined guide cam hole 10a, a sliding guide groove 10c provided in the center, and a clamper starting cam portion 30 that comes into contact with the power transmission pin 31a of the lock lever 31 provided at the bottom. 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-rear 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-rear direction by the stopper 17. .

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 1O 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 7 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 actuation member 10 to which a clamper drive cam portion 30 having a driving force imparting function is added, a chassis 12 provided with an actuation control function portion 34, and a chassis 12 that is movable back and forth. The clamp cam 32, which has a mechanism for converting the movement into position a, the lock lever 31, which has power transmission and speed change movement functions, and the clamper holder 33, which is the 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 back and forth with the driving force applying means 6, the carry body 3 is moved in the storage direction within the player body 2, and then moved 41. in the direction of the spindle motor 1a. The clamper is provided with a clamper starting cam portion 30 capable of transmitting a driving force in the storage direction (in the direction of the arrow Y) and in the direction of the projection (in the direction of the Y arrow) on the actuating member 10, which is a component of the conveyance means for moving the clamper. The starting cam section 30 is provided on a suitable rear lower surface of the actuating member 10, and has a storage power transmission cam surface 30a that can transmit driving force in the storage direction (anti-Y arrow direction) and a protrusion direction (Y arrow direction). protruding power transmission cam surface 30b capable of transmitting driving force to
(shown in Figure 5 (d)).

Since the actuating member 10 is multi-functional, it has various configurations, but among them, the clamper starting cam part 30 that can transmit the driving force is provided on the appropriate rear lower surface of the elongated body 10b, and the said The drive rack 20 of the operating member 1o 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;
That is, in that the drive motor 18, the intermediate drive wheels 19, the drive gear 21, and the synchronized gears 36 provided at both left and right ends of the rotating shaft are also drive sources for moving the actuating member itself, it is an indirect structure of the clamping means. It is a member.

On the other hand, as shown in FIG. 1, FIG. 3, and FIG. The actuation control cam groove 50, which has a locking portion 50a at one end that guides the engagement of the actuation control pin 31b (hereinafter referred to as the actuation control pin 31b since it is formed in a pin shape), and the actuation control cam groove 50 that engages and guides the clamper holder 33 to move up and down. An operation control function section 34 such as a placement movement guide groove 51 for guiding the movement is provided. chassis 12
A clamp cam sliding recess 35 is formed in the flat portion 12a, into which a clamp cam 32 (described later) is slidably mounted, and an operation control cam groove 50 is formed in which the 1 operation control bin 31b is inserted. A moving guide groove path 50d, a lock engagement/disengagement guide cam surface 50b formed on one side edge of the guide groove path 50d, a biasing force imparting guide cam surface 50c formed on the other side edge, and the front thereof. Lock part 5 formed at the end
0a.

The lock engagement/disengagement guide cam surface 50b has one operation control bin 31.
It is designed as a standard instruction surface that guides and controls the direction in which b is activated, the timing of activation, engagement with and disengagement from the lock, etc. On the other hand, the biasing force applying guide cam surface 50c serves as a reference instruction surface that biases the operation control pin 31b so that it is guided while being in contact with the lock engagement/disengagement guide cam surface 50b in a timed manner only when necessary. This is the designed biasing body control section. (FIG. 5(A) is shown) That is, the constituent members of the clamping means 7 formed on the chassis 12 are all actuation control function parts 34 having m-types for controlling the operation.

Next, as shown in FIGS. 1 to 5, the clamp cam 32 is mounted so as to be able to freely slide on the clamp cam sliding recess 35 of the chassis 12 in the protruding and retracting direction. A lifting guide cam hole 32b is provided in which the locking protrusion 33a of the clamper holder 33 engages and moves 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 32d is provided on the side surface thereof.
is formed. In other words, the clamp cam 32 is
Obtaining a predetermined amount of stroke movement in the direction of storage and protrusion with good timing from the driving force caused by the back and forth movement of the actuating member,
This is a component for the f-stage clamp that has an elevating function that converts this into a timely elevating movement of the clamper holder 33.

Next, the lock lever 31 is mounted on the clamp cam 32 through its lock lever pivot bearing hole 32a so as to be able to rotate once, as shown in FIGS. 1, 3, and 5 (b). . The lock lever 31 is provided with a pivot protrusion 31d that serves as a rotational fulcrum at the base of the plate-like piece, and a power transmission part that comes into contact with and transmits driving force to the clamper starting cam part 30 of the operating member IO at its free end. 31a (in the illustrated embodiment, it is shaped like a bottle, so hereinafter this will be referred to as the power transmission pin 31b).
), and an operation control section 31b (in the illustrated embodiment, it is formed in a bottle shape) that engages with the operation control cam groove 50 and abuts on the lock engagement/disengagement guide cam surface 50b to transmit the speed change instruction. In the illustrated embodiment, the power transmission pin 31a protrudes toward the clamp cam 32, and the power transmission pin through-hole 32c of the clamp cam 32 is provided. penetrates through and engages with the clamper starting cam portion 30 of the actuating member 10,
The operation control bin 31b is formed to protrude toward the chassis 12 and is engaged with the operation control cam 1t150. The lock lever 31 also has an operation control bin 31b on its side.
A biasing body 31c is provided to press the lock engagement/disengagement guide cam surface 50b. That is, the lock lever 31 is
This is a component that transmits power to the clamp means and has variable speed movement functions 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 as shown in FIGS. 22 is attached, and a connecting protrusion 33a is provided at the end. The locking protrusion 33a has two holes on one side corresponding to the elevation guide cam hole 32b of the clamp cam 32.
They are separately formed and mounted in combination so as to engage therewith. However, one of the engaging protrusions 33
a is formed into a long length, and is connected to the vertical surface 1 of the chassis 12.
The clamper holder 33 is regulated to be movable only in the vertical direction by engaging with the vertical guide groove 51 provided in the clamp holder 2b. A magnet 52 and a yoke 53 are attached to the lower part of the clamper 22, and together with a magnetic plate 54 attached to the spindle motor 1a, they form a magnetic circuit 55. A clamping force is generated (Figure 7).

The clamping means 7 according to the present invention is further constructed by combining the constituent members described above so as to operate as follows.

An operation control function section 34 provided in the chassis 12. That is, the clamp cam 32 with the lock lever 31 mounted on the clamp cam sliding recess 35 is slidably mounted, and the operating member 10 is assembled so as to move back and forth in the protruding and retracting direction.
Further, the clamp cam 32 is configured to engage a clamper holder 33, and in normal times, the operation control bin 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 arranged so as to be arranged during the stroke of the actuating member 10 moving back and forth. Although it is configured to be mounted anywhere between the chassis 12, it goes without saying that it may be mounted above the clamp cam 32. Further, the biasing body 31c provided on the lock lever 31 is set so as not to be biased when the operation control pin 31b is engaged with the lock portion 50a of the operation control cam groove 50.

Next, the assembled state and operating state of each of the above-mentioned constituent members will be explained.

First, when the first actuating member 10 is moved in the retracting direction, the clamper starting cam part 30 is moved to the lock lever during the stroke movement.
31, the lock lever 31 rotates, and the operation control pin 31b is disengaged from the lock portion 50a of the operation control cam groove 50, and the movement lock in the protrusion storage direction is released. The clamper holder 33 is moved in the storage direction via the lock lever 31 which is guided into engagement with the actuation control cam groove 50 and is engaged therewith.
is lowered, and the disk-shaped record carrier 16 is clamped on the spindle motor la by the clamper 33b attached to the clamper holder 33. That is, by rotating and moving the lock lever 31 backward, the clamp cam 32 and the clamper holder 33 are interlocked to operate the clamp. In the above clamp operation, the lock lever 31 rotates to move the operation control pin 31b to the operation control cam f+1! 50 from the lock part and the lock is released so that the protrusion starts to move in the storage direction, and for a short period of time when the protrusion starts to move in the storage direction, the urging force of the urging body control part is applied. The biasing body 31C guided by the application guide cam surface 50c applies a bias force to the lock lever 31, and the operation control pin 31b is guided by the lock engagement/disengagement guide cam surface 5.
The lock lever 31 and the clamp cam 32 are operated in conjunction with each other.
, controls the clamping operation of the clamper holder 33.

Thereafter, by moving the actuating member 10 in the protrusion direction (Y arrow direction), the clamp cam 32 is moved into the actuation control cam groove 5.
The clamper holder 33 is moved forward together through the lock lever 31 guided to the zero position to release the clamping state and raise the clamper holder 33. When the clamper holder 33 is completely raised, the lock lever 31 is rotated to lock the clamp cam 32 from moving in the front-rear direction. In the unclamping operation of the ramp means as described above, the lock lever 31 moves the operation control pin 31b into the operation control cam groove 50.
When the lock lever 31 is rotated to engage the actuation control pin 31b with the lock portion of the actuation control cam groove 50, Until then, the biasing body 31 guided by the biasing force applying guide cam surface 50c which is the biasing body control section
c applies a biasing force to the lock lever 31 to move the first operation control pin 31b to the lock engagement/disengagement guide cam surface 5 of the operation control cam groove 50.
0b, thereby controlling the unclamping operation of each component of the clamping means configured to be interlocked.

Further, the clamping means for a disc player is configured such that the lock lever 31 is released from contact with the clamper starting cam part 30 so that the operating member 10 can move in the projecting direction regardless of the clamping means 7.

Thirdly, the operation control function section of the clamping means will be explained in detail based on the illustrated embodiment.

As described above, the present invention provides a biasing means and a biasing means control section at appropriate positions of the lock lever 31 and the chassis 12, which have a control function, among the constituent members of the clamping means, and the operation control section engages the lock. It is characterized in that it is configured to operate while being in contact with the removal guide cam surface. A specific example of this new configuration will be described based on the drawings.

As shown in FIG. 5, in the present invention, a biasing body 31c is formed to protrude from the lock lever 31, and the operation control pin 31b is engaged with the operation control guide cam groove 50. The distance α between the biasing force applying guide cam surface 50c and the biasing force applying guide cam surface 50c is configured to be larger than the protrusion width β of the biasing body 31c with respect to the operation control pin 31b. However, in the forward (Y arrow direction) portion of the operation control guide cam groove 50, the lock engagement/disengagement guide cam surface 50b and the urging force applying guide cam surface 50
The distance α° between the protrusion and the protrusion width β is narrower than the protrusion width β. A recess-shaped lock portion is formed at the front (Y arrow direction) end of the operation control guide cam groove 50 on the side of the lock engagement/disengagement guide cam surface 50b.

That is, the actuation control pin 31b of the lock lever 31 is assembled in the actuation control guide cam groove 50 so as to engage the urging body 31c, but the actuation control pin 31b is disposed at a wide distance behind the actuation control guide cam groove 50. When it is in the α portion, there is a clearance γ and the biasing body 31c does not exert a biasing force, but only when it is near the front lock portion 50a, the biasing body 31c applies force and controls the operation. pin 3ib
is pressed against the lock engagement/disengagement guide cam surface 50b. and,
When the operation control pin 31b engages with the lock portion 50a, the urging force of the urging member 31c cannot be exerted.

As described above, the reason why the lock lever 31 is provided with the biasing body 31C and the biasing force applying guide cam surface 50c is to prevent the following troubles. If the above-mentioned biasing means were not provided, the lock lever 31 would not rotate when unexpected vibrations or shocks are applied to the player body 2 while the carry body 3 is not completely housed in the player body z. As a result, the operation control pin 31b of the lock lever 31 comes off the lock portion 50a of the operation control cam groove 50 provided in the chassis 12, and the power transmission pin 31a of the lock lever 31 and the operation member 1
0 may be disengaged, or the clamp cam 32 may move and the clamper 22 may be lowered before the carry body 3 is stored in the player body 2.

In the illustrated embodiment, the lock lever 31 is provided with a biasing means, and the chassis 12 is provided with a biasing means control section, but the configuration is not limited to this. It goes without saying that the lock lever 31 may be provided with a biasing means, and the lock lever 31 may be provided with a biasing means control section.

However, when the biasing body 31c is configured to constantly apply a biasing force to press the operation control pin 31b against the lock engagement/disengagement guide cam surface 50b, the biasing body 31c is constantly loaded. There is a risk that the spring part will lose its springiness due to creep deformation, wear, etc., and if the springiness is strong, there will be a waste of energy consumption, which will hinder the smooth and light operation of the clamp. Although the biasing means is provided for the purpose of preventing malfunction, the provision of the biasing means prevents the deterioration in performance and durability of the biasing body 31c itself, which can be called a new side effect, and prevents the deterioration of the performance and durability caused by the biasing force. It has been improved so that it does not become difficult to move or require more force than necessary to move due to pressing resistance force.

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

A series of clamp operations are performed by applying a driving force by moving the actuating member 10 in the retracting direction, and conversely, a series of angular movements are performed by applying a driving force by moving the actuating 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 retracting 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.

The biasing means from the initial state in which the carry body 2 is not housed in the player body 2 to the state in which the above-mentioned power transmission structure is assembled is the biasing body 31 of lock re/<-31.
There is a clearance γ between the tip of c and the operation control cam groove 50 of the chassis 12, and no load is applied to the biasing body 31c.

FIG. 6(b) shows the clamper starting cam portion 3 of the operating member 10.
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 part 30 moves into the power transmission pin 3 of the lock lever 31 during the stroke movement.
1a and obtains a lateral component force from the transmitted driving force to rotate H the abutting lock re/<-31. 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 operation control pin 31b receives a driving force and rotates in the direction of inclination.
The actuation control cam groove 50 is disengaged from the lock portion 50a, and the lock of movement in the protruding and retracting direction is released.

'At that time, the biasing body 31c comes into contact with the biasing force applying guide cam surface 50c of the operation control cam groove 50 and bends, causing the lock lever to
Apply a biasing force to 31. Therefore, during the lock release operation, the operation control pin 31b is securely in pressure contact with the lock engagement/disengagement guide cam surface 50a, thereby controlling the timing of the movement and the wobbling.

FIG. 6(c) shows the clamper starting cam portion 3 of the operating member 10.
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 storage direction.

A longitudinal component force is obtained from the driving force, and the operation control cam groove 50
The clamp cam 32 also moves in the storage direction via the lock lever 31 guided by the lock lever 31.The movement of the clamper holder 33 is clamped by the lifting guide cam hole 32b and the lifting guide groove 51, which the locking protrusion 33a engages with. The movement of the cam 32 is limited to the upward and downward directions.As a result, the clamper 22 attached to the clamper holder 33 descends and is placed on the disk-shaped record carrier, and the clamper 22
The disk-shaped record carrier is ramped by the attraction force of the magnetic circuit 55 inside (FIG. 7).

In this state, the rear 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 18
As long as the clamp cam 32 does not move in its retracted position when the actuating member moves and the clamper 22 remains in the lowered state, the clamped state is maintained (
(shown in Figure 4).

At this time, the actuation control pin 31b is guided by the guide groove path 50d of the actuation control cam groove 50 and moves in the storage direction, but initially, while the groove width is narrow immediately after unlocking, a load is applied to the biasing body. As the groove width α of the operation control cam groove 50 becomes wider, a clearance γ is generated and no load is applied to the biasing body 31c.

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 is in contact with the lock lever 31 while protruding [41 direction (Y
This is the state when moving in the direction of the arrow).

The actuation control pin 31b is brought into contact with the protruding power transmission cam surface 30b of the actuation member IO, and a vertical component is obtained from the driving force, and the clamp cam 32 is moved together with the lock lever 31 guided into the actuation control cam groove 50. The clamper holder 33 is moved forward to release 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 into the lock 8R50a of the actuation control cam groove 50. When engaged, movement of the clamp cam 32 in the front-back direction is locked.

The state of the biasing means at this time is as follows. Initially,
When the actuation control bottle 31b is in the wide groove width α of the actuation control cam groove 50, a clearance γ is generated and no load is applied to the biasing body 31c, but eventually when the actuation control cam groove 50 moves to a narrow place, the biasing body 31c is not loaded. , the biasing body 31c comes into contact with the biasing force applying guide cam surface 50c of the operation control cam groove 50 and is deflected, and the biasing body 31c is deflected until the operating pin engages with the locking portion, and the lock is applied at a precise timing. controlled as follows.

Further, by moving the first actuating member lO in the projecting direction (Y arrow direction), a longitudinal component of the driving force is obtained, and the cock lever 31 is disengaged from the clamper starting cam part 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. At this time, the structure returns to its initial state and the biasing means is locked with no load applied, and the lock lever does not rotate and release even if vibration or impact is inadvertently applied in the locked state. is maintained.

"Effects of the Invention" As described above, the clamping means for a disc player according to the present invention moves back and forth at a predetermined position along the chassis provided in the player main body, so that the mounted clamp holder can be raised and lowered. A cock lever is rotatably attached to a clamp cam that is configured to operate the clamp by the actuator, and the cock lever is provided with a driving force transmission section and an operation control section, and the driving force transmission section transmits the driving force in a timed manner. At the same time, the operation control part is engaged with an operation control cam groove having a lock part provided on the chassis and a lock engagement/disengagement guide cam surface, and the operation member is moved backward in the storage direction. When a timed driving force is applied to the lock lever, the operation control part of the lock lever is engaged and guided by the operation control cam groove, and the lock lever releases the lock by rotation and moves backward at a predetermined position. When the lock lever is raised and conversely moved forward in the protruding direction to apply a timed driving force to the lock lever, the lock lever moves to a predetermined position while its actuation control portion is engaged and guided by the actuation control cam groove. forward movement in position;
It is designed to perform a locking operation by rotation,
With the operation of the lock lever, a cooperating clamp cam is configured to move back and forth at a predetermined position in a timed manner, thereby performing a timed clamp operation, and is a component of the clamping means. A biasing body is provided on one of the lock levers and the chassis at appropriate positions, and a biasing body control section is provided on the other, so that the biasing force acts only at the front and rear positions where the actuation control section engages and disengages the lock section. The operation control section is configured to operate while being in contact with the locking/disengaging cam surface.

Therefore, the clamping means of the present invention basically has the following features compared to the conventional clamping means.

First, regarding the operation timing, since the driving source is used as the actuating member, it is easy to synchronize the operation with the back and forth movement of the carrier body and the loading movement of the container.

Second, almost all of the structure of the present invention is achieved by mechanical means, and the mechanism is installed in a narrow space along the outer periphery of the product, such as the side or ceiling surface, and is located in the center of the product. Designed to take up less space,
The overall shape is streamlined and downsized.

Third, a lock lever is rotatably attached to the clamp cam, and the lock lever is provided with a driving force transmitting section and an operation control section, and the driving force transmitting section is an operating member that transmits the driving force in a timed manner. At the same time, the operation control section is arranged to engage with an operation control cam groove having a lock section provided on the chassis and a lock engagement/disengagement guide cam surface. When a timed driving force is applied to the lever, the operation control part of the lock lever is engaged and guided by the operation control cam groove, and the lock lever is rotated to release the lock and move backward at a predetermined position. Conversely, when a timed driving force is applied to the lock lever by moving the actuating member forward in the protruding direction, the lock lever locks at a predetermined position while its actuation control portion is engaged and guided by the actuation control cam groove. The locking operation is performed by forward movement and five rotations, and as the lock lever operates, the cooperating clamp cam moves back and forth at a predetermined position in a timed manner, thereby performing the clamping operation. With this structure, it is possible to prevent malfunctions in the clamping and unclamping operations, and to perform the operations in a well-timed manner under constant control.

The present invention provides a biasing body in one of the lock lever and the chassis, which are constituent members of the clamping means having the above-mentioned features, and a biasing body control section in the other. By configuring the structure so that the biasing force acts only at the front and rear positions where the part engages and disengages the lock part, and the operation control part operates while being in contact with the lock engagement/disengagement cam surface, the point of operation is reached. By using the biasing means to ensure that the biasing means acts reliably and to perform highly accurate and timely operation, and by reducing the load on the biasing body to the minimum necessary limit, the provision of the biasing body This makes it possible to reduce the energy consumption that occurs and to maintain the durability of parts such as deterioration of the spring properties of the biasing body, creep deformation, and wear.

The present invention provides a control mechanism for mechanical means to improve the timing and accuracy of the operation of the clamping means, and further includes a biasing means to ensure that the control mechanism operates. However, at the same time, the provision of the biasing means may cause problems such as mechanical accuracy errors and rattling, durability issues such as springiness, deformation, and wear of the biasing body, and the biasing force is not activated. This has the effect of solving the technical problem that hinders the development of products, and realizing an inexpensive, high-performance product with a streamlined shape.

[Brief explanation of drawings]

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. In the plan view showing the constituent members, (A) is the constituent member of the clamp means provided on the chassis, (B) is the lock lever 1, (C) is the clamp cam, and (D) is the constituent member of the clamp means provided on the operating member. Figures 6(a) to 6(#) are explanatory perspective side views showing the clamping means in the perspective flattening mechanism, sequentially showing the operation of each component of the assembled clamping means. "Description of the symbols of the main components" l...Playing means 2...Player main body 3...Carry body 5...Carry body support and guide means 6...Driving force applying means 7...Clamp means 10 ... Operating member 22 ... Clamper 30 ... Clamper starting cam part 31 ... Lock lever 31a ... Power transmission pin 31b ... Operation control bin 31c ... Urging body 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 50a... Lock portion 50b... Lock engagement/disengagement guide cam surface 50c...Biasing force imparting guide cam surface 51...Placement movement guide groove Patent applicant: Pioneer Corporation-l-゛Representative Patent attorney: Hiroo Otsu, 7th saw/

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 consisting of 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 configured to move along a chassis provided in the player body. A lock lever is rotatably attached to a clamp cam that moves back and forth at a predetermined position to raise and lower the attached clamp holder to operate the clamp. Established a department,
The driving force transmission part is engaged with an actuation member that transmits the driving force in a timed manner, and the operation control part is engaged with a lock part provided on the chassis and an operation control cam groove having a lock engagement/disengagement guide cam surface. When the actuating member is moved backward in the retracting direction and a timed driving force is applied to the lock lever, the actuating control portion of the lock lever is engaged and guided by the actuating control cam groove, and the lock lever is rotated. When the lock is released and moved backward at a predetermined position, and conversely, a timed driving force is applied to the lock lever by moving the actuating member forward in the protruding direction, the lock lever is activated by its actuation control section. While being engaged and guided by the operation control cam groove, it moves forward at a predetermined position and locks by rotating.As the lock lever operates, the cooperating clamp cam adjusts the timing. The lock lever is configured to move back and forth at a predetermined position, thereby performing a timed clamp operation, and a biasing body is provided at an appropriate position on one of the lock lever and chassis, which are constituent members of the clamp means. and a biasing body control part is provided on the other side, and the biasing force acts only at the front and rear positions where the actuation control part engages and disengages the lock part, and while the actuation control part is in contact with the lock engagement/disengagement cam surface. Clamping means for a disc player, characterized in that it is configured to operate.