JP2568556B2 - Optical pickup fixing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup fixing device in which an optical pickup unit incorporated in a compact disk reproducing apparatus of a linear motor access type is fixed during transportation to prevent breakage. It is.

2. Description of the Related Art Generally, an optical pickup fixing device is operated from the bottom of the product for fixing and releasing. There is no problem with a stationary compact disc reproducing device, but a compact disc reproducing device such as a karaoke device is a product. If it is provided on the upper part of the product, it will be fixed and released by putting a hand from the back of the product.

FIG. 7 shows a conventional optical pickup fixing device. Seventh
In the figure, 1 is an optical pickup for detecting a signal of a disk, 2 is a guide shaft for moving the optical pickup 1 in the track direction, 3 is a screw for fixing both ends of the guide shaft 2 to the traverse 4, and 5 is a mechanical chassis. 6, a stepped screw fixed to 6; a rubber member 7 for preventing vibration from being transmitted between the traverse 4 and the mechanical chassis 6; a compression spring 8 for maintaining the mounting posture of the traverse 4 in an anti-vibration state;
Is a screw for fixing the mechanical chassis 6 to the bottom plate 10, 11 is a pick holding member formed integrally with the optical pickup 1 and having a rack band 12, and 13 is an elastic claw 14
And a rack band 15 that meshes with the rack band 12 of the pick holding member 11. In the optical pickup fixing device having such a configuration, when the knob 16 is pressed, the hinge arm 17 bends upward while deforming the elastic wall 18 outward. At this time, the rack band 15 is separated from the rack band 12 of the pick holding member 11 and is in a released state. That is, the optical pickup 1 becomes freely controllable and can reproduce a disk. When the knob 16 is pulled, the operation reverses to the above, and the state is fixed. The optical pickup 1 is fixed, so that the optical pickup 1 can be prevented from moving and receiving an impact during transportation. Reference numeral 19 denotes a back plate, and a box-shaped cover 20 is fixed with screws 21. The hand is inserted into the box-shaped cover 20 from the back of the product, and the knob 16 is pushed and pulled.

Problems to be Solved by the Invention However, in the above-described configuration, the space required by the box-shaped cover, that is, the space that can be easily accessed must be secured inside the product, so that the degree of freedom in design such as the size of the product increases. Is significantly constrained. In addition, there is a problem that the box-shaped cover itself becomes considerably large, so that the cost is high, and since the knob is located at the back, it is difficult to operate.

The present invention is to solve such a conventional problem and to provide an optical pickup fixing device that is low in cost and easy to operate and requires very little space.

Means for Solving the Problems In order to solve the above problems, the optical pickup fixing device of the present invention is a product in which a spring plate is fitted to a knob of a lock member, and a rotating lever for moving the spring plate up and down is provided in a housing. The rear end is exposed to the back so that operation can be performed, and at the position where the spring plate and the rotating lever are engaged, the elastic movement amount of the lock member is added so that a gap can always be secured even after the completion of the rotating lever movement. Vibration is not transmitted.

According to the present invention, the optical pickup can be fixed / released by exposing and operating the rear end of the rotating lever connected to the lock member to the back surface of the product by the above configuration. Since there is no inconvenience of creating a space and putting in a hand to operate from below, and there is no need to provide a box-shaped cover, problems such as design restrictions and high costs can be solved.

Embodiment An optical pickup fixing device according to an embodiment of the present invention will be described below with reference to the drawings.

1 to 6, reference numeral 22 denotes an optical pickup for detecting a signal on the disk 23, reference numeral 24 denotes a guide shaft for moving the optical pickup 22 in the track direction, reference numeral 25 denotes a screw for fixing both ends of the guide shaft 24 to the traverse 26, and reference numeral 27 denotes a screw. A stepped screw for fixing the traverse 26 to the mechanical chassis 28, 29 is a rubber member for preventing transmission of vibration between the traverse 26 and the mechanical chassis 28, and 30 is for maintaining the mounting posture of the traverse 26 in a vibration-proof state. A compression spring, 31 is a screw for fixing the mechanical chassis 28 to the bottom plate 32, 33 is a pick holding member formed integrally with the optical pickup 22 and having a rack band 34, 35 is fitted and fixed to the traverse 26 with elastic claws 36. And a rack band 37 which is engaged with the rack band 34 of the pick holding member 33. The rack belt 37 is urged up and down by a fixed size (C ₁ , C ₂ ) by the restoring force of the elastic wall 39 at a position where the hinge arm 38 is horizontal (the state shown in FIG. 3), and a position at which it does not engage with a position at which it engages. Is always maintained with good switching mode. The rack band 37 moves in the same body and the slide shaft 40 is guided by the guide hole 41 and moves up and down.Therefore, the meshing position and angle do not change, and the leading ends of the opposing teeth of both rack bands 34 and 37 are guided. Slope 42 is provided to ensure engagement. The knob 43 provided at the lower end of the lock member 35 has a spring plate 44
Is held by the elastic force of the holding arm 45 without play.
A front end portion 48 of a rotating lever 47 is engaged with 46. The front end portion 48 of the rotary lever 47 is always provided with a constant gap (D ₁ , D ₂ in FIG. 4) in the left-right direction with the engagement hole 46, and the hinge arm 38
Are provided a position or neutral point becomes horizontal (FIG. 3 state) in the vertical direction fixed gap (E _1, E _2). The rotating lever 47 is provided with a stepped screw 50 on a vertical wall 49 formed on the bottom plate 32.
To form a rotation fulcrum. Reference numeral 51 denotes a stepped screw attached to the rotating lever 47 with the vertical wall 49 interposed therebetween, and an arc-shaped long hole 52 provided in the vertical wall 49.
Is pivoted together with the pivot lever 47 in the range regulated by. The front end of the rotating lever 47 at the operation limit position of this regulation range
48 is a vertical gap (E ₁ , E ₁ ) at the horizontal position (neutral point)
Slightly larger dimensions than _{2) (F 1, F 2} ) only it is configured to move the rack band deforming the hinge arm 38 of the locking member 35 to instantly reach this position by C _1, C ₂ dimensions 37
Move up and down. Reference numeral 53 denotes a convex portion provided on the rotating lever 47, which is always in pressure contact with the vertical wall 49 and engages with the concave holes 54, 55 provided on the vertical wall 49 when the rotating lever 47 reaches the operation limit position. Thus, the switching moderation feeling and the rotation lever 47 are held.
Reference numeral 56 denotes a knob member fitted and fixed to the rear end portion 57 of the rotating lever 47, and an operation portion is formed at a position slightly recessed by a G dimension from the back surface of the product. Reference numeral 58 denotes a back plate fixed to the back surface of the product with screws 59, and has a hole 60 through which an operation portion of the knob member 56 is exposed and can be operated. Reference numeral 61 denotes a flange provided so that the inside cannot be seen from the hole 60, and is formed integrally with the knob member 56. The reason why the tip of the operating portion of the knob member 56 is slightly concave (G) from the back of the product is that when the product falls down in the rear direction, an impact from the floor surface is directly applied to the knob member 56, causing internal destruction. This is to prevent danger.
62 is a turntable provided on the traverse 26,
The disk 23 is suction-fixed between a tip of a clamp plate 63 rotatably held by the mechanical chassis 28 and a magnet ring 64 rotatably held at the tip. Reference numeral 65 denotes a disk holder movably held on the mechanical chassis 28, and loads the disk 23 onto the turntable 62 in conjunction with the clamp plate 63. Reference numeral 66 denotes a linear motor unit provided in the traverse 26, which accesses the optical pickup 22 at high speed in the track direction.

The operation of the optical pickup fixing device configured as described above will be described below with reference to FIGS. 5 and 6.

First, FIG. 5 shows a state in which the optical pickup 22 is fixed. When the knob member 56 is in the upper position, the convex portion 53 of the rotating lever 47 engages with the concave hole 54 of the vertical wall 49, and the front end Part 48
The horizontal position (neutral point) to move downward by F _1. In this case F ₁ is moved downward by C ₁ instantly horizontal position restoring force of the hinge arm 38 of the gap E ₁ is greater than for the lock member 35 at the (neutral point) elastic wall 39. As a result, a space is secured again in the vertical direction of the front end portion 48, and at the same time, the rack band 37 of the lock member 35 goes down and meshes with the rack band 34 of the pick holding member 33. In this state, even if the product is transported, the optical pickup 22 does not move and receive an impact.

Next, FIG. 6 shows a state in which the fixing of the optical pickup 22 is released. When the knob member 56 is in the lower position, the convex portion 53 of the rotating lever 47 engages with the concave hole 55 of the vertical wall 49. And
The front end portion 48 to the horizontal position (neutral point) is moved upward by F _2. At this time, F ₂ is the gap E ₂ at the horizontal position (neutral point)
Since it is larger, the hinge arm 38 of the lock member 35 instantaneously moves upward by C _{2 due} to the restoring force of the elastic wall 39. As a result, the front end
The gap is secured again in the vertical direction of 48, and at the same time, the rack band 37 of the lock member 35 rises and the pick holding member 33
Separated from the rack strip 34 of FIG. In this state, the signal of the disk can be reproduced.

As described above, according to the present embodiment, the spring plate is fitted into the knob of the lock member, and the rotating lever for raising and lowering the spring plate is provided on the housing so that the rear end is exposed to the back of the product so that the operation can be performed with the conventional device. While the operation is more convenient, the elastic movement amount possessed by the lock member itself is added at the position where the spring plate and the rotating lever are engaged, so that a gap can always be secured at the position where the rotating lever has been moved, and vibration from the outside can be secured. Can be fixed and released without being transmitted to the optical pickup, creating a large space inside the product as in the past, resulting in design restrictions, and increasing the cost by providing a box-shaped cover. Can be eliminated.

As described above, according to the present invention, the spring plate is fitted to the knob of the lock member, and a rotating lever for moving the spring plate up and down is provided on the housing so that the rear end is exposed to the back of the product so that the operation can be easily performed. On the other hand, at the position where the spring plate and the rotating lever are engaged, the elastic movement amount held by the locking member itself is added, so that a gap can always be secured at the rotating lever movement completion position, and external vibrations are applied to the optical pickup. Since it can be fixed and released without being transmitted, there is no need to create a large space inside the product as in the past, so that it can be accessed.Therefore, there are restrictions on the design, and the cost can be reduced by providing a box-shaped cover. The problem of high cost can be solved. Also, since the rear end of the rotating lever is slightly concave from the back of the product,
Even if the product falls down in the rear direction, there is no danger of damaging the internal mechanism because no impact is received at the rear end of the rotating lever. Further, since the lock member can be used as a shape that can be operated from the bottom like the stationary type of the compact disc player, many effects can be exhibited, such as sharing and saving the cost of the mold.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an optical pickup fixing device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main parts of part A in FIG. 1, and FIG. 3 is a detailed cross section of part A in FIG. FIG. 4, FIG. 4 is a view taken in the direction of arrow B in FIG. 3, FIG. 5 is a sectional view showing a fixed state of the optical pickup, FIG. 6 is a sectional view showing a released state of the optical pickup, and FIG. It is sectional drawing which shows a pickup fixing device. 22 ... Optical pickup, 33 ... Pick holding member, 34 ...
Rack band, 35… Lock member, 37… Rack band, 38…
Hinge arm, 39 ... Elastic wall, 43 ... Knob, 44 ... Spring plate,
45 ... holding arm, 46 ... engagement hole, 47 ... rotating lever, 49 ...
... vertical wall, 50 ... stepped screw, 51 ... stepped screw, 52 ... arc-shaped long hole, 53 ... convex part, 54, 55 ... concave hole, 56 ... knob member, 58 ... back Board.

Claims (2)

(57) [Claims] An optical pickup movably mounted on a traverse floating from a housing; and an optical pickup movably provided on the traverse, capable of engaging with and disengaging from a gear provided on the optical pickup. A lock member for fixing and releasing the lock member, a spring plate fitted in a knob of the lock member, a front end engageable with the spring plate, a rear end is exposed to the product back surface, and the housing is rotatable. A pivoting lever supported, wherein when the rear end of the pivoting lever is moved up and down to fix and release the optical pickup, the elastic movement of the lock member at a position where the spring plate and the pivoting lever engage. An optical pickup fixing device, wherein a gap is always secured after the rotation lever movement is completed by adding an amount. 2. The optical pickup fixing device according to claim 1, wherein the rear end of the rotating lever is formed at a position slightly recessed from the rear surface of the product.