JPS61137264A - Disk loading mechanism - Google Patents

Abstract

PURPOSE:To obtain a disk loading mechanism simplified at its mechanism, reduced at its operating sound, set up to a proper loading time, and improved at its operability by providing the mechanism with roller plates projecting rollers to be engaged with L-shaped holes of subchassises and guide holes of rack plates in common and a carry for mounting a disk supported by the roller plates. CONSTITUTION:The roller plates 12 are formed on the inside of the subchassis 7, front back rollers 21 projected from the outer sides of respective roller plates 12 are engaged with the L-shaped holes 7a of the subchassises 7 and the guide holes 11a of the rack plates 11 in common. When the right and left rack plates 11 are moved in the front and back direction, the rollers 21 are moved horizontally and vertically along the L-shaped holes 7a of the subchassises 7. Three rollers 18a-18c and a plate spring 19 are formed on the inside of each roller plate 12 out of the right and left roller plates 12 and engaged with the roller groove 6b of the carry 6. The carry 6 is supported by the rollers 18a, 18b when located on a disk replacing position or supported by the rollers 18b, 18c at the disk reproducing position.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial field of application This invention is a method for storing disc-shaped recording media (hereinafter referred to as discs) such as video discs, compact discs, and vinyl records at a predetermined position (autoloading) behind the disc exchange position. This invention relates to a semi-automatic loading mechanism that automatically loads and unloads the disc between the disc playback position (starting position) and the disc playback position.

(B) Conventional technology Conventionally, a semi-auto loading mechanism has been known in which a disc is loaded by manually moving a carry on which a disc is placed to the disc playback position, and after playback is completed, the carry is pushed out of the cabinet a little by a spring. ing.

However, this type of device uses a plunger to lock and release the spring that pushes out the carry, so it makes a lot of mechanical noise, has a bad feel, and has a hard time locking the carry. 1ffi, such as a plunger that moves the disk up and down, and a container that moves the disk up and down.
1 to 4 is required, and the number of parts cannot be reduced that much.

There is also a known loading mechanism that automatically loads and unloads a carry between a disc exchange position and a disc playback position.
#ri structure has multiple parts and has a large number of parts (also, when transporting a 12-inch disc, it takes a long time to load it), which is a drawback.

(c) Problems to be Solved by the Invention The purpose of this invention is to improve the above-mentioned drawbacks of the conventional device, and has a simple mechanism, a small number of parts, low operating noise, appropriate loading time, and ease of operation. The purpose is to provide a good disc loading mechanism.

(d) Means for Solving the Problems In order to achieve the above-mentioned object, the disc loading mechanism of the present invention has a one-shaped hole consisting of a horizontal part and a vertical part connected below the rear end on both the left and right sides. A pair of left and right rack plates that are driven in the front and back direction and are equipped with a guide hole consisting of a horizontal part and a gradually rising slope part connected to the horizontal part, a single-shaped hole in the sub chassis, and It consists of a pair of left and right roller plates that have protruding rollers that commonly engage with the guide holes of the rack plates, and a carrier that is supported by the left and right roller plates so as to be movable in the front and back direction and on which the disc is placed. There is.

(E) The carry is manually moved between the working disc exchange position and the O-1 loading start position, and the rack plate is driven between the autoloading start position and the disc playback position. Automatically moves horizontally and vertically along the 1-shaped groove of the leaf chassis.

(f) Embodiments Examples of the present invention will be described with reference to the drawings.

A disc player consists of a central turntable, a disc playback mechanism, a carry for placing the disc, an autoloading mechanism for moving the carry between the autoloading start position and the disc playback position, and a clamp for the disc on the turntable. It consists of a disc clamp mechanism, a front door that is always biased to the closed position by a spring, etc.

<Schematic Operation> FIG. 1 shows the states in which the carry 6 on which the disc 8 is placed is at (a) the disc exchange position, (b) the autoloading start position, and (c) the disc playback position, respectively. First, the general operation of disk loading will be explained.

When the eject key is pressed in the carry storage state (the state in which the carry 6 is in the (c) disc playback position), the front door 17
will open and the carry 6 will be carried out to the (b) autoloading start position.Pull it out by hand to the disc exchange position (a), place the disc 8 on the carry 6 at this position, and then move the carry 6 to the (b) position. When pushed to the autoloading start position, the autoloading mechanism starts and pulls the carry 6 into the carry storage position (c) above the disc playback position, then lowers it to the disc playback position to play the disc. Start.

After playback is complete, press the eject key again to return to Carry 6.
is automatically carried out to the (b) auto-loading start position, then manually pull it out to the (a) disc replacement position, remove disc 8, and push it back to the (b) auto-loading start position to start the auto-loading mechanism. It will be in the carry storage state.

<Autoloading Mechanism> FIG. 2 is an exploded perspective view showing the support mechanism and autoloading mechanism of the carry 6.

Both left and right sides of the sub-chassis 7 are bent vertically upward, and L-chamber holes 7a are formed in the bent portions of both sides, respectively, in the front and back, consisting of a horizontal part and a vertical part connected below one end of the rear part 6. ing.

Rack plates 11 are supported on the outside of the left and right bent portions of the sub-chassis 7 so as to be slidable in the front-back direction, and are driven by left and right synchronized gears 14 fixed on the same axis to move in the front-back direction in synchronization.

Each rack plate 11 has a guide hole 11a consisting of a horizontal portion at the front end and an inclined portion that is connected to the rear end and gradually rises.
are formed in front and behind each other.

Roller plates 12 are provided inside the left and right bent portions of the sub-chassis 7, and two front and rear rollers 21 protruding from the outer surface of each roller plate 12 are connected to the L chamber hole 7a of the sub-chassis 7 and the rack plate. 11 guide holes 11a in common.

Therefore, when the left and right rack plates 11 move in the front-rear direction, the rollers 21 (that is, the roller plates 12) move horizontally and vertically along the L-shaped holes 7a of the subchassis, as shown in FIG.

The left and right synchro gears 14 that drive the rack plate 11 each have a collar portion 14a on the outside thereof.
A: The position of the lower part of the relax board 11 is regulated so that it does not shift outward.

A one-sided clutch consisting of a spring and a stopper is provided as a part of the drive force transmission mechanism that connects the synchro gear 14 and the drive motor (not shown), and the synchro gear 14 always brings out the rack plate 11. As a result, if the cap 6 is pushed in with excessive force at the autoloading start position, the spring of the clutch absorbs the force and buffers it.

When the rack plate 11 is at the autoloading start position, its actuator section (not shown) activates the drive motor by pressing an autoloading start switch (not shown) located on the back side of the sub-chassis 7. When the disc is stopped and the cap 6 is manually moved from the disk exchange position to the autoloading start position, by pushing the cap 6 a little further, the rack plate 11 moves backward, away from the autoloading start switch, and the drive motor starts. to start.

<Cap support mechanism> Three rollers 18a are installed inside the left and right roller plates 12.
, 18b, 18c and a leaf spring 19 are provided, respectively, and are engaged with rollers 186b formed on both left and right sides of the cap 6 in the front-rear direction.

When in the disc exchange position, the cap 6 is in the front 2
It is supported by a set of rollers 18a and 18b, and when it is in the disc playback position, it is supported by two rear sets of rollers 18b and 18c.

The distance between the three rollers is that the distance between the front rollers 188 and 181) is small, and the distance between the rear rollers 18b and 18c is large. The amount is large, and the carry 6 is stably supported at the disc playback position.

As shown in FIG. 3, the roller groove 6b of the cap 6
The front end of the cap 6 is slightly widened so that when the cap 6 is in the disc playback position, the front roller 18a is substantially separated from the upper and lower walls of the roller groove 6b, so that the support of the cap 6 is extended to the rear two. Set of rollers 18b and 1
Definitely move to 8c.

When the cap 6 is in the autoloading product start position and the disc playback position, the leaf spring 19 of the roller groove 6b
An engagement recess 6C is formed at a position facing the cap 6.
When the disk moves from the disk replacement position to the autoloading start position, the protrusion at the tip of the leaf spring 19 engages the engagement recess 6C.
By engaging with the roller plate 12, the cap 6 is held on the roller plate 12.

When pulling the cap 6 forward from the autoloading start position, the cap 6 is pulled forward with a certain amount of force to disengage the leaf spring 19 from the engagement recess 6C, and then the cap 6 can be pulled out easily.

When the protrusion at the tip of the leaf spring 19 engages with the engagement recess 6G of the roller fM 6 l), the recarry 6 is slightly pulled backward by the inclined surface of the protrusion of the leaf spring 19.
The front roller 18a contacts the front end of the roller groove 61), and the carry 6 and the roller plate 12 are accurately positioned.

A carry switch 20 operated by the carry 6 is provided on one roller plate 12 (see FIG. 2), and when the carry 6 is held on the roller plate 12, the carry switch 20 is operated by the carry 6.

While the autoloading mechanism is operating and the roller plate 12 is moving backwards, if the carry 6h (for some reason, for example, being held down by hand or a foreign object gets caught), the roller plate 12 When the spring 19 disengages from the engagement recess 6C of the carry 6, only the roller plate 12 moves a little, and the carry switch 20 detects this and stops or reverses the operation of the autoloading mechanism.

<Carry> As shown in Fig. 4, a disc mounting part 6a consisting of a recessed part slightly larger than the disc 8 is formed on the upper surface of the carry 6, and a disc mounting part 6a consisting of a concave part slightly larger than the disc 8 is formed on the upper surface of the carry 6. A notch is formed into which the turntable is inserted.

The rear part of the disk mounting section 6a, that is, the carry 6
The part that is located inside the player body 1 when the disc is in the disc exchange position, is gradually deeper as it goes towards the rear.
Thereby, the disk 8 can be inserted and placed in the disk placement portion 6a in a state slightly inclined from horizontal.

<Disk Clamp Mechanism> FIG. 5 shows an exploded perspective view of the disk clamp mechanism.

The left and right sides of the clamper holder 23 that supports the disk clamper 31 on the lower center surface are bent vertically, and engagement grooves 23a and 23 are formed at the front and rear of the bent portions, respectively.
1] are engaged with the rollers 21 of the left and right roller plates 12 (between the roller plates 12 and the chassis 7), respectively,
The clamper holder 23 moves together with the roller 21 (ie, the roller plate 12) as shown in FIG.

The rear engagement groove 23a is formed in the horizontal direction, and the front engagement groove 23b is formed in the vertical direction. It is biased to the left by a coil spring 22 provided between the arm 12a and the arm 12a.

The disc clamper 31 is supported by the clamper holder 23 via a ball joint (not shown), and is tilted at an appropriate angle so as to press and support the disc 8 with a uniform force when pressed onto the turntable. do.

Note that by forming the front engagement groove 23b in an arc shape centered on the rear engagement groove 23a, it is possible to prevent slight horizontal movement due to the vertical movement of the front end of the clamper holder 23. .

<Movement of Roller Plate> FIG. 6 shows the movement of the roller plate 12 as the rack plate 11 moves, and FIG. 7 shows the movement of the clamper holder at that time.

When the rack plate 11 is at the frontmost position as shown in FIG. 6(A), the roller 21 is located at the top (
) and the horizontal part of the L chamber hole 7a, and when the rack plate 11 moves backward, the roller 21
also moves horizontally backwards.

As shown in the same figure (b), the roller 21 is
When the rack plate 11 reaches the vertical part of the guide hole 11a, it stops horizontal movement, and when the rack plate 11 moves further backward, it descends along the vertical part of the L chamber hole 7a and stops when it reaches the horizontal part of the guide hole 11a.

That is, the roller plate 12, the carry 6, and the clamper holder 23 move horizontally from (a) the autoloading start position to (b) the carry storage position, and then vertically descend to (c) the disc playback position.

As shown in FIG. 7, at a position (ff) slightly above the clamper holder 23 reaching the disc playback position, the lower surface of the disc 8 on the carry 6 comes into contact with the turntable 2, and then the disc clamper 31 comes into contact with the upper surface of the disc 8, and the roller plate 12 is roughly lowered, and the force of the coil spring 22 is applied to the disc clamper 31, and the disc 8 is clamped on the turntable.

When the disc is unloaded, an operation that is completely opposite to the above-described operation is performed.

(G) As described in detail, the disc loading mechanism of the present invention includes a sub-chassis having L-shaped holes on both left and right sides, each consisting of a horizontal portion and a vertical portion connected below the rear end. , a pair of left and right rack plates that are driven in the front and back direction and have a guide hole consisting of a horizontal part and a sloped part that is connected to the rear and gradually rises upward, common to the L chamber hole of the subchassis and the guide hole of the rack plate. It consists of a pair of left and right roller plates with protruding rollers that engage with the left and right roller plates, and a carry that is supported by the left and right one-phase roller plates so as to be movable in the front and back direction and on which the disk is placed. Manually move between the autorope 2r ring start position and Δ-
Loading interval (J:su, Ij
! ! It is compact in size, has a small number of parts, produces low operating noise, and does not require long loading times, making it extremely easy to operate.

[Brief explanation of drawings]

Figure 1: Disc loading machine of this invention (14
Fig. 2: An exploded perspective view of the carry support structure and autoloading mechanism Fig. 3: A side view J3 and a horizontal sectional view showing the rollers of the carry ... Plan view A3 and longitudinal sectional view of the carry Figure 5 ... Disassembled perspective view of the disc clamp mechanism Figure 6...
Figure 7 is an explanatory diagram showing the movement of the roller plate as the rack plate is moved. Figure 7 is an explanatory diagram showing the movement of the carry and disc clamper. ...Rack plate 11a...Guide hole 12...Roller plate 21...Roller

Claims (1)

[Scope of Claims] (a) A subchassis having an L-shaped hole on both left and right sides, each consisting of a horizontal part and a vertical part connected to the lower part of the rear end; (c) A pair of left and right rack plates that are driven in the front-rear direction and have guide holes that are provided with guide holes that gradually rise. It consists of a pair of left and right roller plates with protruding rollers, (d) a carry that is supported by the pair of left and right roller plates so as to be movable in the front and back direction and on which a disc-shaped recording medium is placed, and (e) the carry is a disc. A disc loading mechanism characterized by manually moving between an exchange position and an autoloading start position and automatically moving between an autoloading start position and a disc playback position.