JPH05347087A - Disk player - Google Patents

Abstract

PURPOSE:To facilitate an assembling and disassembling works of a disk player. CONSTITUTION:In a concaved casing 10 provided with a bottom plate 11 and respective side plates 12,13,14, a motor supporting plate 25 to support the motor M from the upper side and a disk driving unit 50 are inserted and installed. Further, a fulcrum pin 64 provided on a roller blacket 63 to support an inserting/ejecting roller 61 is inserted to fulcrum grooves 66a, 66b of the casing 10 and supported. Thus, after each member is installed in the manner of piling up from the upper side of the casing 10, a cover plate 71 is mounted on an opening part of the casing 10 to close down the upper part of the casing 10. The assembling and disassembling works are facilitated by such a piling up system.

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 a car-mounted CD player, and more particularly to a disc player which can be easily assembled.

[0002]

2. Description of the Related Art FIG. 4 shows the structure of a conventional vehicle-mounted CD player. In this CD player, the disk drive unit 1 is elastically supported in the housing 2 by an elastic support member 3 such as an air damper or a coil spring. When the disk D is installed on the turntable 4 of the disk drive unit 1 and clamped by the clamper 5, the vibration from the vehicle body is damped by the elastic support member 3, and the optical pickup provided in the disk drive unit 1 or the like. The body vibration is not affected.

Inside the insertion opening 2a of the housing 2, an insertion / ejection roller 6 and a pinch roller 7 are provided.
The disc D inserted from is sandwiched between the insertion discharge roller 6 and the pinch roller 7, and is fed into the disc drive unit 1 by the driving force of the insertion discharge roller 6 in the counterclockwise direction. When the disc is ejected, the disc D is ejected from the insertion port 2a to the outside by the driving force of the insertion and ejection roller 6 in the clockwise direction. When the disc D is clamped on the turntable 4 of the disc drive unit 1, the insertion / ejection roller 6 descends to the position indicated by the broken line and separates from the disc D.

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

[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 locking mechanism that locks the roller and also the disc drive unit 1. In a car-mounted CD player, since the outer diameter of the housing 2 is limited, the assembling work for assembling the above-mentioned mechanisms in a small housing becomes very complicated. After incorporating the drive unit 1, it is necessary to assemble an elevating mechanism for moving the roller shaft 6a up and down in the housing 2, and further to 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 and assembled in a narrow space in the housing 2, which makes the assembly work extremely difficult.

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned conventional problems, and to provide a disc player in which each member can be easily assembled in one direction from one direction and the assembling workability is improved. Has a purpose.

[0008]

DISCLOSURE OF THE INVENTION In a disc player according to the present invention, a disc drive unit is inserted from above into a concave housing provided with a bottom plate and side plates rising from the edge of the bottom plate, and the disc drive unit is placed on the bottom plate. A fulcrum portion of a roller bracket that is installed and holds an insertion / ejection roller that feeds a disc into a disc drive unit is inserted into and supported from above the casing into a recess of the side plate, and a cover that closes the upper portion of the casing. It is characterized in that a plate is attached.

[0009]

In the above means, a concave housing having a bottom plate and a side plate is used, and the disc drive unit is inserted from above the housing and installed on the bottom plate. Further, the fulcrum portion 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 from above the housing so as to overlap with each other on the bottom plate, and the cover is attached to the upper portion of the housing to complete the assembly work.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings of FIGS. FIG. 1 is an exploded perspective view showing the structure of an on-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 II portion of FIG. 1, and FIG. 3 is installed on a bottom plate portion of a housing. It is a top view which shows the mechanism. Reference numeral 10 in the drawing is a housing. The housing is made of sheet metal, and includes a bottom plate 11 and a pair of side plates 12 and 13 facing each other, which are bent and raised from the left and right side edges of the bottom plate.
A rear side plate 14 that is bent from the rear edge of the bottom plate 11 and is raised is formed, and the housing 10 is a concave box that opens upward. Further, the bottom plate 11 is formed with a rectangular notch 11a. Various members installed in the housing 10 and parts of each mechanism are the bottom plate 11 of the housing 10.
It is mounted so that it is stacked on top.

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

The switching lever 15 is provided with bending pieces 15d, 15e, 15f rising from the left and right side edges thereof. The bending piece 15d has a function of raising and lowering an inserting and discharging roller which will be described later, and an obliquely extending drive groove 15g is formed at an edge portion of the bending piece 15d. The bending piece 15e has a function of driving a clamp arm integrally provided in a disk drive unit described later.

A recess 12a is formed in the side plate 12,
A support shaft 19 is planted 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 attached to the support shaft 19. In addition, the concave portion 1
An arm shaft 21 is planted in 2a. A fulcrum hole 22a 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 follower pin 22b is planted on the other arm of the drive arm 22, and the follower pin 22b is attached to the disk cam 18.
It is inserted in the cam groove 18a formed in the. A driving piece 22c is provided at the lower end of the driving arm 22 so as to project, 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 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. The switching lever 15 is controlled to be driven in the (A) direction or the (B) direction.

The motor M shown in FIGS. 1 and 2 applies a rotational force to the switching gear 17. The motor M is fixed on the motor support plate 25. Mounting holes 25a and 25b are formed in the motor support plate 25. Further, the bottom plate 11 is formed with mounting screw holes 11b and 11c. 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. 2, the bottom plate 11
The switching lever 15 is mounted on top of this, and the motor support plate 25 and the motor M are stacked and fixed thereon. The switching lever 15 is movable in the (A)-(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 on the bottom plate 11, and the screw holes 11b and 11c are formed on the upper portion of the raised portion. Alternatively, the motor support plate 25 is formed with a recessed portion that is bent toward the bottom plate 11, and the mounting hole 25
a and 25b may be formed. By forming this raised portion or recessed portion, a gap is formed between the bottom plate 11 and the motor support plate 25 so that the switching lever 15 can move.

The guide pins 16a and 16b supporting the switching lever 15 may be provided with retaining rings at the tips thereof to prevent the switching lever 15 from coming out upward. If the gap between the switching lever 15 and the switch lever 15 is set to be slightly wider than the plate thickness of the switching lever 15, the motor support plate 25 allows the motor support plate 25 to move above the switching lever 15 without attaching the retaining ring to the guide pins 16a and 16b. Can be prevented from slipping out.

In the portion shown in FIG. 2, the switching lever 15 is installed on the bottom plate 11, and the switching gear 1 is provided in the recess 12a of the side plate 12.
7 and 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 motor support plate 25 is attached to complete the assembly work. Further, a gear assembly (not shown) having a plurality of intermediate gears is attached to the rear side plate 12, and the intermediate gears are connected to the switching gear 17
By engaging the intermediate gear 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 that constitute the lock mechanism of the disk drive unit as shown in FIG. 3 are attached.

As shown in FIG. 3, a shaft 31 is planted in the bottom plate 11, and an intermediate link 32 is attached to the shaft 31. A drive pin 28 is provided at the end of the switching lever 15, and the drive pin 28 is engaged with the intermediate link 32. The bottom plate 11 is also provided with a pair of guide pins 33, 33.
The long holes 34a and 34b of the lock arm 34 are fitted. With the guide pins 33, 33, the lock arm 3
4 is movably supported in the (C)-(D) directions.
A groove 34c is formed at the end portion of the lock arm 34 on the (D) side, 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 by the shaft 36. A pin 38 provided on the lock member 37 is inserted into a drive hole 34d of a lock arm 34. Engaged. Similarly, the bottom plate 11
A shaft 41 is fixed to the shaft 41, and a lock member 42 is rotatably supported by the shaft 41. A pin 43 provided on the lock member 42 is engaged with a drive hole 34e of a lock arm 34. .. Further, on the lower side of FIG.
A shaft 44 is fixed to the shaft 44, and a lock member 45 is rotatably supported on 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 the bent piece 15e of the switching lever 15.

The operation of mounting the respective parts constituting the lock mechanism is performed by mounting the switching lever 1 on the bottom plate 11 of the housing 10.
Attach the lock arm 34 before and after attaching 5,
After that, the intermediate link 32, the lock member 37, the lock member 42, and the lock member 45 are piled up and inserted into the respective shafts 31, 36, 41, 44 to complete the process. After the components constituting the lock mechanism are attached, the disk drive unit 50 is inserted and attached in the housing 10.

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

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

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

At this time, the lock member 45 is driven counterclockwise by the switching lever 15, and the lock projection 45b provided on the lock member 45 is engaged with the unit chassis 51. Further, when the lock arm 34 is driven in the (D) direction, the lock member 37 is driven in the clockwise direction, and the tip portion 37a of the lock member 37 engages with the ear portion 51a of the unit chassis 51. Further, the lock member 42 is driven counterclockwise, and the lock protrusion 42a provided on the lock member 42 is engaged with the unit chassis 51. By engaging these locking members with the unit chassis 51,
The unit chassis 51 supported by the elastic support members 56, 57, 58 is fixed, and the ejecting and inserting operations of the disc are smoothly performed.

As shown in FIG. 1, inside the housing 10, there are provided insertion and ejection rollers 61 for feeding the disc into the disc drive unit 50 and ejecting the disc from the disc drive unit 50. The insertion / ejection roller 61 is attached to the outer periphery of the roller shaft 62.
Both ends of the roller shaft 62 are rotatable and supported by elongated holes formed in supporting pieces 63a, 63a formed by bending the left and right ends of the roller bracket 63.
It is movably supported in the (E)-(F) directions 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. Further, fulcrum pins 64, 64 are provided on the respective support pieces 63a, 63a of the roller bracket 63. Only one of the fulcrum pins 64 is shown, and the other is omitted.

Arc-shaped guide grooves 65a and 65b are formed on the upper sides of the side plates 12 and 13 of the housing 10, 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 assembled to the roller bracket 63. The assembled product is inserted from above the housing 10, and the both ends of the roller shaft 62 have the guide grooves 65a,
65b and the fulcrum pins 64, 64 are fulcrum grooves 66.
a, 66b. The roller shaft and the roller bracket are attached after the disc drive unit 50 is attached or before the disc drive unit 50 is attached.

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 fixed to the roller shaft 62 via the intermediate gear 6 by the driven gear 6.
7 to be transmitted. As a result, the insertion and ejection roller 61 is rotationally driven in the disc feeding direction or the disc ejection direction. A link (not shown) is connected to the roller bracket 63, and this link is driven by the moving force of the drive groove 15g of the switching lever 15 in the (A) direction. Due to this driving force, the roller bracket 63 is rotated about the fulcrum pin 64. Since the roller shaft 62 can be relatively moved in the (E)-(F) directions by the long hole formed in the support piece 63a of the roller bracket 63, this movement allowance allows the roller bracket 63 to move. Along with the rotation, the roller shaft 62 is guided by the arcuate guide grooves 65a and 65b in the opposite direction and moves up and down. When the disc is raised, the insertion / ejection roller 61 comes into contact with the disc and a feeding force can be applied.

A cover plate 71 is attached to the top of the housing 10. On the lower surface of the cover plate 71, a roller shoe 72 for sandwiching the disc with the insertion / ejection roller 61 is fixed. The cover plate 71 has a mounting hole 71
a and 71b are formed. Further, 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 of the housing 10
The cover plate 71 closes the concave upper end opening of the housing 10 by being screwed to the b.

As described above, the respective members in the housing 10 are mounted on the bottom plate 11 of the housing 10 so as to be stacked in order, and finally the cover plate 71 is mounted to complete the assembly. By mounting the respective members so that they are stacked in this manner, it is possible to assemble the respective members while ensuring a sufficient mounting area, and the assembling work becomes very easy. In addition, disassembly work is easy, and maintenance work is easy.

[0030]

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

[Brief description of drawings]

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

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

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

FIG. 4 is a side view showing a structure of a conventional vehicle-mounted player,

[Explanation 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 discharge roller 62 Roller shaft 63 Roller bracket 64 Support point pins 66a, 66b Support point groove 71 Cover plate

Claims (1)

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