JPH079731B2 - Disc recording / reproducing device - Google Patents

Description

The present invention relates to a disc recording / reproducing device such as a video disc player or a compact disc player.

[Outline of the Invention] In the present invention, a leaf spring for pressing a switch for detecting the position of the carrier is attached by a stopper that restricts the carrier from being separated from the housing.

[Background technology]

Since video discs, compact discs, etc. are rotated at a relatively high speed, they are clamped on a turntable.
It is possible to allow the user to manually operate this clamping operation, but doing so deteriorates the operability and also affects the sales of the player. Therefore, generally, a loading device automatically loads and unloads the disc on the turntable.

Therefore, the carrier is moved back and forth with respect to the housing so that the carrier can carry the disc. The clamp operation is performed at a predetermined timing during the carrying operation.

[Problems to be solved by the invention]

In this way, when the carrier is moved back and forth with respect to the housing, it is necessary to stop the carrier at a predetermined position so that the carrier does not come out of the housing, but the conventional device has a drawback that the stopping position varies. .

Therefore, the present invention surely stops the carry at a predetermined position.

[Means for solving problems]

A disc recording / reproducing apparatus of the present invention includes a casing, and a carrier that is moved forward and backward with respect to the casing for carrying a disc.
A motor for applying a driving force to the carrier, a stopper provided at a relatively rear portion of the carrier, a leaf spring attached to the stopper, and a relatively front portion of the housing,
An abutting portion capable of abutting the stopper and a switch arranged near the corresponding abutting portion of the housing and pressed by the leaf spring are provided, and the motor is energized in accordance with the open / closed state of the switch. Alternatively, the cancellation is performed.

[Action]

The carry is moved back and forth with respect to the housing to carry the disc. A mounting portion is provided at a relatively rear portion of the carrier, and a stopper is mounted on the mounting portion. A leaf spring is attached by this stopper. A protrusion is provided on a relatively front portion of the housing, and a switch is arranged near the protrusion. When Carry stepped out of the chassis,
The stopper comes into contact with the protrusion to prevent the stopper from coming off. At this time, the switch is pressed by the leaf spring (the position of the carrier is electrically detected), and the rotation of the motor that drives the carrier is stopped.

Therefore, variations in the carry stop position are prevented.

〔Example〕

FIG. 2 is an exploded perspective view of a disc loading mechanism when the disc recording / reproducing apparatus of the present invention is applied to a video disc player. Reference numeral 1 denotes a carry, which is moved back and forth with respect to a casing (not shown). Reference numeral 21 denotes a rack, which has a gear that meshes with a drive gear (not shown). By screwing the screws 23 into the screw holes 2 of the carrier 1 through the elongated holes 22 of the rack 21, a pair of racks 21 are attached to the left and right of the carrier 1, respectively. Rack 21 has a long hole 22
It is slidable relative to the carrier 1 with the screw 23 inserted in the guide as a guide. 24 is a stopper, the shaft 28 of which is fitted in the groove 3 of the carrier 1. Spring 26
Is stretched between the protrusion 4 of the carrier 1 and the protrusion 27 of the stopper 24, and the stopper 24 is rotated clockwise about a shaft 28. As a result, the pin 25 of the stopper 24 projects downward in the figure and locks the step 29 of the rack 21. Stopper like this
The lock means is constituted by 24 and the spring 26, and the rack 21 and the carrier 1 when locked by the lock means.
Move together.

41 is a container, a disk (not shown) on the upper surface
Are to be placed. Pins 42 provided on the left and right of the container 41 are fitted into cams 30 that are provided on the rack 21 at an angle. Thus, the container 41 is supported by the rack 21 via the cam 30.

Reference numeral 5 is a hole as a mounting portion, which is provided at a relatively rear portion of the carrier 1. A stopper 6 as shown in FIG. 1 is inserted into and attached to the hole 5. The stopper 6 is the first
It is composed of a part 7 and a second part 8. Hole 5
When the first portion 7 is inserted into the second portion 8 after being inserted into the second portion 8, the skirt portion 9 below the second portion 8 expands, and the stopper 6 does not come out of the hole 5.

When inserting the stopper 6 into the hole 5, a leaf spring 11 as shown in FIG. 3 is attached to the stopper 6. That is, the stopper 6
The skirt portion 9 of the is inserted into the hole 12 of the leaf spring 11, and the stopper 6
The leaf spring 11 is pressed against the housing 1 by the flange portion 10.

As shown in FIG. 4, a protrusion 15 is provided on a relatively front portion of the housing 14, and a switch 16 is arranged in the vicinity thereof.
A roller plate 17 having rollers 18 is provided on the left and right sides of the housing 14.
Is attached.

When the motor (not shown) is energized, its rotation
It is transmitted to 21, and Carry 1 advances from the case 14. At this time, the roller 18 supports the sliding movement of the carrier 1.
Further, since it is locked by the locking means, the rack 21 and the container 41 move together with the carrier 1. When the carrier 1 reaches a predetermined position, the stopper 6 contacts the protrusion 15. As a result, the carrier 1 is prevented from falling off the housing 14. Further, at this time, the pressing portion 13 of the leaf spring 11 presses the switch 16. As a result, it is electrically detected that the carrier 1 has reached the predetermined position, and the motor is de-energized. Therefore, carry 1 stops at that position. In this state, the disc is replaced or the like.

When the motor is rotated in the reverse direction, the carrier 1 is retracted inside the housing 14. When the carrier 1 is retracted to a predetermined position, the stopper 24 is pressed counterclockwise by means (not shown) to release the lock, and the carrier 1 and the container 41 are prevented from retracting. As a result, the carrier 1 and the container 41 stop at that position, but the rack 21 further retracts. When the rack 21 retracts, the cam 42 guides the pin 42 and the container 41 descends. When the container 41 descends, the disk placed on the upper surface thereof is placed on the turntable. The disc is clamped on the turntable by a clamper (neither is shown). In this state, the turntable, and hence the disc, is rotated and the signal is reproduced. At this time, since the container 41 is located sufficiently below the turntable, it does not hinder the rotation.

〔effect〕

As described above, according to the present invention, since the leaf spring is attached to the attachment portion of the carrier via the stopper, the drive of the motor can be turned off at the stop position of the carrier determined by the contact portion and the stopper. , It is possible to reduce the variation of the carry stop position. Further, since the switch is pressed by the leaf spring, the load due to the moving speed of the carrier is absorbed, so that the impact on the switch is mitigated and the durability of the switch can be improved.

[Brief description of drawings]

1 (a) and 1 (b) are a front view and a plan view of a stopper of the present invention, FIG. 2 is an exploded perspective view of a disc loading mechanism of a disc recording / reproducing apparatus of the present invention, and FIGS. c) is a left side view, a front view and a bottom view of the leaf spring, and FIG. 4 is an assembled perspective view of the disc loading mechanism. 1 …… Carry 2 …… Screw hole 3 …… Groove 4 …… Protrusion 5 …… Hole 6 …… Stopper 7,8 …… Part 9 …… Skirt part 10 …… Flange part 11 …… Leaf spring 12 …… Hole 13 …… Pressing part 14 …… Case 15 …… Protrusion 16 …… Switch 17 …… Roller plate 18 …… Roller 21 …… Rack 22 …… Long hole 23 …… Screw 24 …… Stopper 25 …… Pin 26 ...... Spring 27 …… Projection 28 …… Shaft 29 …… Step portion 30 …… Cam 41 …… Container 42 …… Pin

Claims (1)

[Claims] 1. A housing, a carrier that is moved forward and backward with respect to the housing to convey a disk, a motor that applies a driving force to the carrier, and a stopper that is provided at a relatively rear portion of the carrier. , A leaf spring attached to the stopper,
An abutting portion provided at a relatively front portion of the casing and capable of abutting against the stopper; and a switch arranged near the corresponding abutting portion of the casing and pressed by the leaf spring, A disk recording / reproducing apparatus in which the motor is energized or deenergized depending on whether the switch is open or closed.