JP2933445B2 - Disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player such as an on-vehicle CD player, and more particularly to a disc player which facilitates an assembling operation.

[0002]

2. Description of the Related Art FIG. 4 shows the structure of a conventional in-vehicle CD player. In this CD player, a disk drive unit 1 is elastically supported in a housing 2 by an elastic support member 3 such as an air damper or a coil spring. When the disk D is set on the turntable 4 of the disk drive unit 1 and clamped by the clamper 5, vibration from the vehicle body is damped by the elastic support member 3, and the optical pickup provided on the disk drive unit 1 To prevent the effects of vehicle vibration.

[0003] An insertion / ejection roller 6 and a pinch roller 7 are provided inside the insertion opening 2a of the housing 2, and the insertion opening 2a is provided.
Is inserted between the insertion / ejection roller 6 and the pinch roller 7 and is sent into the disk drive unit 1 by the counterclockwise driving force of the insertion / ejection roller 6. When the disc is ejected, the disc D is ejected from the insertion slot 2a to the outside by the clockwise driving force of the insertion / ejection roller 6. When the disk D is clamped on the turntable 4 of the disk drive unit 1, the insertion / ejection roller 6 moves down to the position shown by the broken line and separates from the disk D.

Usually, a lock mechanism for locking the disk drive unit 1 is provided in the housing 2, and when the disk D is fed in and out by the insertion / ejection roller 6, the elastic support member 3 is used. The disk drive unit 1 that is elastically supported is locked. This lock prevents the target disk drive unit 1 into which the disk is to be inserted from moving when the disk is inserted or ejected, so that accurate positioning and clamping of the disk can be performed.

[0005]

As described above, in the in-vehicle CD player, the disk drive unit 1 and the elastic support member 3 for elastically supporting the disk drive unit 1 are incorporated in the housing 2, and the insertion / ejection roller 6 and the pinch It is necessary to incorporate a lock mechanism for locking the rollers and further the disk drive unit 1. In the case of an in-vehicle CD player, since the outer diameter of the housing 2 is limited, the assembling work of incorporating each of the above-described mechanisms in a small housing becomes very complicated. After assembling the drive unit 1, it is necessary to assemble an elevating mechanism for raising and lowering the roller shaft 6a in the housing 2, and further attach the roller shaft 6a to this mechanism.

A lock mechanism for locking the disk drive unit 1 is also assembled in the housing 2 for each component after the disk drive unit 1 is assembled. At this time, the parts are inserted into a narrow space in the housing 2 and assembled, which makes the assembling work very difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a disk player which can easily assemble each member from one direction in a housing to improve assembling workability. The purpose is.

[0008]

According to the present invention, there is provided a disk player according to the present invention, wherein a disk drive unit is inserted from above into a concave housing provided with a bottom plate and a side plate rising from an edge of the bottom plate. A fulcrum portion of a roller bracket which is installed and holds an insertion / ejection roller for feeding a disk to a disk drive unit is inserted and supported from above the housing into the recess of the side plate, and further covers a top of the housing. A plate is attached.

[0009]

In the above means, a concave housing having a bottom plate and a side plate is used, and a disk drive unit is inserted from above the housing and installed on the bottom plate. The fulcrum of the roller bracket holding the insertion / ejection roller is also assembled by being inserted into the recess of the side plate from above the housing. Then, the disk drive unit, the insertion / ejection roller, and other components are assembled so as to overlap the bottom plate from above the housing, and a cover is attached to the upper portion of the housing, thereby completing the assembly operation.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an exploded perspective view showing the structure of an in-vehicle CD player as an example of a disc player according to the present invention, FIG. 2 is an exploded perspective view showing details of a portion II in FIG. 1, and FIG. FIG. 5 is a plan view showing a mechanism that performs Reference numeral 10 in the figure is a housing. The housing is made of sheet metal, and includes a bottom plate 11 and a pair of opposed side plates 12 and 13 bent and raised from the left and right side edges of the bottom plate.
A rear side plate 14 that is bent and raised from the rear edge of the bottom plate 11 is formed, and the housing 10 is a concave box with an upper opening. The bottom plate 11 has a rectangular cutout 11a. Various members and components of each mechanism installed in the housing 10 are provided on the bottom plate 11 of the housing 10.
It is installed so that it is stacked on top.

First, inside the side plate 12 of the housing 10,
A switching lever 15 is mounted on the bottom plate 11. As shown in FIGS. 2 and 3, this switching lever 15 is bent in a U-shape, and has a long hole 15a at its bottom.
And 15b are formed. Guide pin 1 on bottom plate 11
6a and 16b are implanted, and the long holes 15a and 15b are fitted in the guide pins 16a and 16b, and the switching lever 1
5 is movable in (A)-(B) directions. On one edge of the switching lever 15, an engagement groove 15 to which a feed force in the (A)-(B) direction is applied by a drive arm described later.
c is formed.

The switching lever 15 is provided with bent pieces 15d, 15e and 15f rising from the left and right side edges. The bent piece 15d has a function of raising and lowering an insertion / discharge roller described later, and a drive groove 15g extending obliquely is formed at an edge of the bent piece 15d. The bent piece 15e has a function of driving a clamp arm provided integrally with a disk drive unit described later.

A recess 12a is formed in the side plate 12,
A support shaft 19 is implanted in the recess 12a. A switching gear 17 and a disc cam 18 that rotates together with the switching gear 17 at a certain timing are rotatably mounted on the support shaft 19. The recess 1
An arm shaft 21 is implanted in 2a. A fulcrum hole 22 a formed in one arm of the drive arm 22 is inserted into the arm shaft 21, and the drive arm 22 can swing about the arm shaft 21. A follow pin 22 b is implanted in the other arm of the drive arm 22, and the follow pin 22 b is attached to the disc cam 18.
Is inserted into the cam groove 18a formed at the bottom. A driving piece 22c is projected from the lower end of the driving arm 22, and the driving piece 22c is inserted into the engagement groove 15c of the switching lever 15. When the switching gear 17 rotates and the disc cam 18 is driven in either the forward or reverse direction following the switching gear 17 at a certain timing, the swing angle of the drive arm 22 is changed by the shape of the cam groove 18a. As a result, the switching lever 15 is driven in the direction (A) or (B).

The motor M shown in FIGS. 1 and 2 applies a rotational force to the switching gear 17. The motor M is fixed on a motor support plate 25. The motor support plate 25 is provided with mounting holes 25a and 25b. In addition, mounting screw holes 11b and 11c are formed in the bottom plate 11. The mounting hole 25 formed in the motor support plate 25
A mounting screw 26 is inserted into each of a and 25b,
The motor support plate 25 is fixed on the bottom plate 11 by screwing the mounting screws 26 into the screw holes 11b and 11c.

That is, in the portion shown in FIG.
The switching lever 15 is mounted on the above, and the motor support plate 25 and the motor M are further stacked and fixed thereon. The switching lever 15 is movable between (A) and (B) directions while being sandwiched between the bottom plate 11 and the motor support plate 25. In order to allow the movement of the switching lever 15, a raised portion is formed in the bottom plate 11, and the screw holes 11b and 11c are formed in the upper portion of the raised portion. Alternatively, a concave portion bent in the direction of the bottom plate 11 is formed in the motor support plate 25, and the mounting hole 25 is formed in the concave portion.
a, 25b may be formed. By forming the raised portion or the concave portion, a gap is formed between the bottom plate 11 and the motor support plate 25 so that the switching lever 15 can move.

A retaining ring may be attached to the tips of the guide pins 16a and 16b supporting the switching lever 15 so that the switching lever 15 does not come off. If the gap between the switching lever 15 and the switching lever 15 is slightly larger than the plate thickness of the switching lever 15, the motor supporting plate 25 allows the motor support plate 25 to move above the switching lever 15 without attaching the retaining ring to the guide pins 16 a and 16 b. Can be stopped.

In the portion shown in FIG. 2, a switching lever 15 is provided on the bottom plate 11 and a switching gear 1 is provided in a concave portion 12a of the side plate 12.
7, the disk cam 18 and the drive arm 22 are attached.
The drive piece 22c of the drive arm 22 is engaged with the engagement groove 15c of the switching lever 15. Next, the assembly work is completed by attaching the motor support plate 25. Further, a gear assembly (not shown) having a plurality of intermediate gears is attached to the rear side plate 12, and this intermediate gear is
, And the intermediate gear meshes with the worm gear 27 provided on the output shaft of the motor M,
A power transmission unit for transmitting the power of the motor M to the switching gear 17 can be configured. Further, on the bottom plate 11 of the housing 10, various components constituting a lock mechanism of the disk drive unit as shown in FIG. 3 are attached.

As shown in FIG. 3, a shaft 31 is implanted in the bottom plate 11, and an intermediate link 32 is attached to the shaft 31. A drive pin 28 is provided at an end of the switching lever 15, and the drive pin 28 is engaged with the intermediate link 32. The bottom plate 11 is provided with a pair of guide pins 33, 33.
The long holes 34a and 34b of the lock arm 34 are fitted. The lock pins 3 are provided by the guide pins 33.
4 is supported movably in (C)-(D) directions.
A groove 34c is formed at the end on the (D) side of the lock arm 34, and a connecting pin 35 provided on the intermediate link 32 is engaged with the groove 34c.

A shaft 36 is fixed to the bottom plate 11, and a lock member 37 is rotatably supported on the shaft 36. A pin 38 provided on the lock member 37 is inserted into a drive hole 34d of the lock arm 34. Is engaged. Similarly, the bottom plate 11
, A lock member 42 is rotatably supported by the shaft 41, and a pin 43 provided on the lock member 42 is engaged with a drive hole 34 e of the lock arm 34. . Further, on the lower side of FIG.
A lock member 45 is rotatably supported by the shaft 44. A drive piece 45a is formed integrally with the lock member 45, and the drive piece 45a is engaged with a drive groove 15h formed in a bent piece 15e of the switching lever 15.

The mounting of the components constituting the lock mechanism is performed by mounting the switching lever 1 on the bottom plate 11 of the housing 10.
Before and after the installation of 5, the lock arm 34 is attached,
Thereafter, the intermediate link 32, the lock members 37, the lock members 42, and the lock members 45 are stacked and inserted through the respective shafts 31, 36, 41, and 44 to complete the process. After the components constituting the lock mechanism are attached, the disk drive unit 50 is inserted into the housing 10 and attached.

The disk drive unit 50 has a unit chassis 51 in which a turntable 52 and a motor for driving a spindle shaft 52 of the turntable 53 are incorporated in advance. Further, the unit chassis 51
Are mounted in advance with guide shafts 55, 55, and an optical pickup 54 movably supported by the guide shafts 55, 55, and an objective lens 54a and other optical components are built in the optical pickup 54. ing. The unit chassis 51 is provided with a movement drive mechanism for moving the optical pickup 54 along guide shafts 55, 55.

As shown in FIG. 1, the unit chassis 51
, Elastic support members 56, 57, 58 such as an air damper and an oil damper are attached. Each of the elastic support members 56, 57, 58 is mounted on the bottom plate 11 via a support plate indicated by reference numeral 59, for example.
After these elastic support members 56, 57, 58 are mounted on the bottom plate 11, the unit chassis 51 of the disk drive unit 50 may be mounted on these elastic support members, or may be elastically supported on the unit chassis 51 in advance. When the disk drive unit 50 is installed, the elastic support members 5 are attached.
6, 57, 58 may be attached to the bottom plate 11. The disk drive unit 50 is provided on the bottom plate 11 of the housing 10.
The switching lever 15, the components constituting the lock mechanism shown in FIG. 3, and the motor support plate 25 to which the motor M is fixed.
After being attached, it is assembled so as to be stacked on the bottom plate 11.

Here, the operation of the lock mechanism will be described. When a disk is set in the disk drive unit 50 and a reproducing operation is performed, the switching lever 15 is driven in the direction (A) as shown in FIG. Therefore, the lock arm 34 is connected via the intermediate link 32 to (C)
Driven in the direction. When the disk is ejected from the disk drive unit 50, the switching lever 15 is driven in the direction (B), and the lock arm 34 is driven via the intermediate link 32 in the direction (D).

At this time, the lock member 45 is driven counterclockwise by the switching lever 15, and the lock projection 45 b provided on the lock member 45 is engaged with the unit chassis 51. When the lock arm 34 is driven in the direction (D), the lock member 37 is driven clockwise, and the distal end 37 a of the lock member 37 is engaged with the ear 51 a of the unit chassis 51. Further, the lock member 42 is driven counterclockwise, and the lock protrusion 42 a provided on the lock member 42 is engaged with the unit chassis 51. By engagement of these lock members with the unit chassis 51,
The unit chassis 51 supported by the elastic support members 56, 57, 58 is fixed, so that the disc can be smoothly ejected and inserted.

As shown in FIG. 1, an insertion / ejection roller 61 for feeding a disk into the disk drive unit 50 and discharging the disk from the disk drive unit 50 is provided in the housing 10. The insertion / discharge roller 61 is attached to the outer periphery of a roller shaft 62.
Both ends of the roller shaft 62 are rotatable by supporting holes 63a, 63a formed by bending at the left and right ends of the roller bracket 63, and the supporting pieces 63a, 63
It is movably supported in directions (E)-(F) relative to a. In FIG. 1, only one support piece 63a of the roller bracket 63 is shown, and the other support piece 63a is omitted. The support pieces 63a, 63a of the roller bracket 63 are provided with fulcrum pins 64, 64, respectively. Only one of the fulcrum pins 64 is shown, and the other is not shown.

On the upper side of one of the side plates 12 and 13 of the casing 10, arc-shaped guide grooves 65a and 65b are formed, respectively. Further, fulcrum grooves 66a and 66b are formed at positions aligned with the guide grooves 65a and 65b. The roller shaft 62 is previously mounted on a roller bracket 63. The assembled body is inserted from above the housing 10, and both ends of the roller shaft 62 are inserted into the guide grooves 65a,
65b and the fulcrum pins 64, 64
a, 66b. The mounting of the roller shaft and the roller bracket is performed after or before the disk drive unit 50 is mounted.

Further, at this time, for example, an intermediate gear is attached to one side plate 13 and the rotational force of the switching gear 17 is driven by the driven gear 6 fixed to the roller shaft 62 via the intermediate gear.
7 to be transmitted. Thereby, the insertion / ejection roller 61 is driven to rotate in the disk feeding direction or the disk discharging direction. A link (not shown) is connected to the roller bracket 63, and the link is driven by the moving force of the drive groove 15g of the switching lever 15 in the (A) direction. With this driving force, the roller bracket 63 is rotated about the fulcrum pin 64. The roller shaft 62 can be relatively moved in the (E)-(F) directions by a long hole formed in the support piece 63 a of the roller bracket 63. With the rotation, the roller shaft 62 is guided up and down by the arcuate guide grooves 65a and 65b in opposite directions. When it rises, the insertion / ejection roller 61 comes into contact with the disk and can apply a feeding force.

A cover plate 71 is attached to the upper part of the housing 10. A roller shoe 72 for holding the disc with the insertion / ejection roller 61 is fixed to the lower surface of the cover plate 71. The cover plate 71 has mounting holes 71
a, 71b are formed. Screw holes 73a and 73b are formed at the upper open end of the housing 10. After the respective members are stacked and attached inside the housing 10, the cover plate 71 is installed on the upper end of the housing 10,
The mounting screws 74, 74 are attached to the mounting holes 71 of the cover plate 71.
a, 71b, and screw holes 73a, 73
b, and the cover plate 71 closes the concave upper end opening of the housing 10.

As described above, each member in the housing 10 is mounted on the bottom plate 11 of the housing 10 so as to be sequentially stacked, and finally the cover plate 71 is mounted to complete the assembly. By mounting each member in a stacked manner in this manner, each member can be assembled while securing a sufficient mounting area, and the assembling work is greatly facilitated. In addition, disassembly work is easy, and maintenance work and the like are also easy to do.

[0030]

As described above, according to the present invention, the disk drive unit, the insertion / ejection roller, and the like can be assembled from above in the interior of the concave housing, so that the assembling work and the disassembling work are easy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an in-vehicle CD player as one embodiment of the present invention;

2 is a partially exploded perspective view showing a detailed structure of a part II in FIG. 1;

FIG. 3 is a plan view showing a mechanism installed on a bottom plate of the housing;

FIG. 4 is a side view showing the structure of a conventional in-vehicle player;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Housing 11 Bottom plate 12, 13 Side plate 14 Rear side plate 15 Switching lever 17 Switching gear 18 Disc cam 22 Drive arm 25 Motor support plate 32 Intermediate link 34 Lock arm 37, 42, 45 Lock member 50 Disk drive unit 56, 57, 58 Elastic support member 61 Insertion / ejection roller 62 Roller shaft 63 Roller bracket 64 Support pin 66a, 66b Support groove 71 Cover plate

Claims (1)

(57) [Claims] 1. A disk drive unit is inserted from above into a concave housing provided with a bottom plate and a side plate rising from an edge of the bottom plate, and is installed on the bottom plate, and sends the disk to the disk drive unit. A fulcrum of a roller bracket holding an insertion / ejection roller is inserted into and supported by a recess of the side plate from above the housing, and a cover plate closing an upper portion of the housing is attached. Disc player.