JP2000038091A - On-vehicle apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle apparatus to improve the strength of a chassis fixed in a casing and besides prevent complication of structure to mount the chassis and the casing. SOLUTION: An auxiliary chassis 13 arranged at the end parts of a chassis 11 and a side plate 12 is fixed at the fixing part 21 of a casing 20 in a state to overlap a mounting part 13E with the bottom plate 11C of the chassis 11 at the tip of the leg part 13C. This constitution, since a bottom plate 11C is fixed in a state to substantially increase the thickness of a plate, firmly fixes the chassis 11 at the casing 20. Further, the structure of the frame of the whole of the chassis is reinforced by an auxiliary chassis 13 and brought into a state that a strain hardly occurs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle device in which a drive unit for a recording medium is incorporated in a chassis, and particularly to an in-vehicle device capable of increasing the strength of the chassis without complicating the shape of the chassis. Equipment.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a chassis structure in a conventional vehicle-mounted device. The in-vehicle device A shown in FIG.
For example, an MD (mini-disc) player or the like, and the chassis 1 is housed in a housing (not shown) including a decorative panel provided with various switches and a display device.
The chassis 1 is composed of, for example, a combination of an upper frame and a bottom frame, and these are formed by pressing a thin metal plate material or the like. The side plate 1A of the chassis 1,
1B, mounting pieces 1a, 1 each formed by bending a part thereof.
b, 1c, and 1d are provided integrally, and each mounting piece corresponds to each fixing portion of the housing. These mounting pieces 1a, 1b,
A screw insertion hole or a female screw hole is formed in each of 1c and 1d, and each fixing portion of the housing and each mounting piece are screwed and fixed.

[0003] Inside the chassis 1, a drive unit having a rotary drive unit for rotating the MD, a drive unit having a recording / reproducing head, and the like, and a drive unit U incorporating MD insertion / ejection means (not shown) are provided. The drive unit U is elastically supported by elastic support members S1, S2, S3 such as a damper and a coil spring provided on the chassis 1 so as to be finely movable in each direction.

[0004]

However, in-vehicle equipment having the above-described chassis 1 has the following problems. (1) As shown in FIG. 4, many openings are formed on each surface of the chassis 1. This opening is in the chassis
It is necessary to prevent the drive unit U, which is in the elastically supported state within the chassis 1, from colliding with the inner surface of the chassis 1 due to vibration, or to insert parts for assembling various mechanisms into the chassis 1 or to tighten screws. It becomes. When the occupation ratio of the opening in the chassis 1 increases, the strength of the chassis 1 itself decreases, and there is a problem that the chassis 1 is easily deformed by an external impact. (2) In order to solve the above problem, it is conceivable to provide a reinforcing member for reinforcing the chassis 1. However, simply fixing the reinforcing member to the chassis 1 requires only the chassis 1
Although effective for reinforcing itself, distortion of the chassis 1 with the screw fixing portion between the chassis 1 and the housing as a fulcrum cannot be sufficiently prevented. Further, when the reinforcing member is fixed to the housing, a fixing mechanism for fixing the chassis 1 to the housing and a fixing portion for fixing the reinforcing member to the housing are both required. Structure becomes complicated. (3) Also, in the case of having the mounting pieces 1a, 1b, 1c, 1d as mounting portions for mounting the chassis 1 to the housing, these mounting pieces are formed by bending from the metal plate constituting the chassis 1. Therefore, its strength cannot be increased so much. Therefore, there is a disadvantage that the mounting pieces 1a, 1b, 1c, 1d are easily deformed or broken by an external impact on the housing.

The present invention has been made to solve the above-mentioned conventional problems, and can enhance the strength of a chassis fixed in a housing, and does not complicate a structure for mounting the chassis and the housing. It aims to provide in-vehicle equipment.

[0006]

According to the present invention, there is provided a housing, and a chassis accommodating a recording medium drive unit therein and provided in the housing, and a mounting portion having a mounting hole is formed in the chassis. In an in-vehicle device in which a screw is inserted through the mounting hole and the mounting portion is screwed and fixed to the housing, an auxiliary chassis is assembled to the chassis, and the mounting portion of the chassis is The mounting portions formed on the auxiliary chassis are overlapped, and the mounting portions of the chassis and the auxiliary chassis are fixed together by screws to the housing.

[0007] The vehicle-mounted device according to the present invention comprises:
For example, MD (mini disc), CD (compact disc) or DVD (digital versatile disc)
A drive unit for driving such as is incorporated. According to the present invention, the strength of the chassis can be increased by incorporating the auxiliary chassis into the chassis fixed to the housing side. Also, the mounting part of the auxiliary chassis,
Since these parts are overlapped on the mounting part of the chassis and these parts are fixed together, the auxiliary chassis can reinforce the chassis itself and the mounting part between the chassis and the housing. It is possible to solve problems such as easy distortion with the mounting portion as a fulcrum.

Accordingly, the area occupied by the opening of the chassis can be increased, the contact between the drive unit and the inner surface of the chassis when the drive unit vibrates in the chassis can be prevented, and various components can be inserted into the chassis through the opening. Parts can be easily installed. In order to exhibit the above effects, it is necessary to not only form the attachment portion to the housing on the auxiliary chassis but also fix the auxiliary chassis and the chassis at any location.

In the above, on both sides of the chassis, there are a pair of side plates provided integrally with or separately from the chassis, and the auxiliary chassis functions as a reinforcing member for connecting the pair of side plates. Are preferred.
When the side plates of the chassis are connected to each other by the auxiliary chassis in this way, distortion of the side plates of the chassis can be effectively prevented by the auxiliary chassis. Although the auxiliary chassis may be fixed to the ceiling plate of the housing, the side plates are connected by the auxiliary chassis so that the chassis can be reinforced even when a large opening is formed in the ceiling portion of the chassis. become.

Preferably, the driving unit is supported in the chassis via an elastic supporting member.
When the drive unit is elastically supported in the chassis, the occupancy of the opening of the chassis is increased to prevent the drive unit from hitting the inner surface of the chassis when the drive unit vibrates in the chassis. However, the auxiliary chassis can sufficiently reinforce the chassis having a high occupancy of the opening.

The present invention is effective in a case where a mounting piece projects integrally from the chassis, the mounting hole is formed in the mounting piece, and a mounting portion of the auxiliary chassis is overlapped with the mounting piece. That is, if the mounting piece protrudes from the chassis due to bending or the like, the strength of the mounting piece itself becomes very weak.However, since this mounting piece can be reinforced by the auxiliary chassis, the mounting portion of the chassis to the housing can be reinforced. Become.

According to the present invention, as shown in FIGS. 1 and 2, not only the mounting piece protrudes from the chassis, but also, as shown in FIG. 3, a mounting hole is formed inside the side edge of the chassis. It is also effective in those that have been done. Even if the portion where this mounting hole is formed is not a mounting piece but inside the side edge of the chassis, the auxiliary chassis is fastened and fixed to this portion together, so that the chassis supports the mounting portion with the housing. No problem such as distortion occurs.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a mechanism section of an MD (mini-disc) player as an embodiment of a vehicle-mounted device according to the present invention. FIG. 2 shows a state where the mechanism section of FIG. It is the side view seen from. FIG.
Is provided in a housing 20 composed of a decorative panel and an outer case. The framework of the mechanism B mainly includes a chassis 11, side plates 12, and an auxiliary chassis 1.
3 is comprised. These chassis 11, side plate 12
The auxiliary chassis 13 is formed by stamping and bending a thin metal plate by pressing. Inside the framework of the mechanism section B, a drive unit having a rotary drive mechanism for the MD, a recording / reproducing head, etc., and a drive unit U incorporating a MD insertion / ejection means (not shown) are housed. I have.

The chassis 11 includes a bottom plate 11C and a side plate 1 formed by bending the X1 and Y2 sides of the bottom plate 11C in the drawing.
1A and the rear plate 11B are integrally formed, and the bottom plate 1
An opening 11D that is largely cut is formed in 1C. A motor M for driving various mechanisms in the MD player and a gear group 17 for transmitting the power of the motor M are provided at the back of the bottom plate 11C in the Y2 direction.

Further, elastic supporting members S1, S2 and S3 such as a damper and a coil spring are provided inside the framework of the mechanism section B.
The drive unit U indicated by a one-dot chain line is elastically supported.

On the X2 side of the chassis 11, a side plate 12 obtained by bending a metal plate into an L-shaped cross section is attached. The side plate 12 includes an upper plate portion 12A, a side plate portion 12B, and a support portion 12C formed at a position one step lower in the Z2 direction from the upper plate portion 12A.

An engaging portion 12a and an engaging piece 12b are formed in a lower portion of the side plate portion 12B on the Y1 and Y2 side in the drawing, and an engaging groove 11 formed in a bottom plate 11C of the chassis 11 is formed.
a and 11b, respectively. At this time, a square hole 12c formed at the end on the Y2 side of the support portion 12C is formed.
Is inserted through a hook 11c provided on the upper edge of the rear plate 11B of the chassis 11. The side plates 12 are firmly fixed to the chassis 11 by, for example, twisting or crimping the tips of the hook pieces 12b and 11c.

The auxiliary chassis 13 includes an upper plate 13A, a side plate 13B, and legs 13C and 13D formed by bending a metal plate.
And mounting portions 13E and 13F. After the chassis 11 and the side plate 12 are combined, the auxiliary chassis 13 is attached as a reinforcing member that surrounds these Y1 side ends. At this time, the protruding portion 12d formed on the side plate 12 fits into the hook hole 13a formed in the bent portion on the X2 side of the auxiliary chassis 13. Also, hook pieces 11d and 1d formed on the upper end side of the side plate 11A of the chassis 11
1e is fitted into the retaining grooves 13b, 13c formed in the upper plate 13A of the auxiliary chassis 13, respectively. And
When the tips of the hook pieces 11d and 11e are twisted or caulked, the auxiliary chassis 13
1 and the side plate 12 are firmly fixed.

In this state, the upper surface of the chassis 11 (Z1
On the side), a large opening surrounded by the side plate 11A, the rear plate 11B, the side plate 12, and the upper plate 13A of the auxiliary chassis 13 is formed. The upper opening 11 and the lower opening 11
D prevents collision between the drive unit U and the framework including the chassis 11 when the drive unit U elastically moves.

As described above, the auxiliary chassis 13 functions as a reinforcing member for connecting the side plate 11A formed integrally with the chassis 11 and the side plate 12 separately attached to the chassis 11, and as a result, a large size is obtained. The strength of the entire framework having an opening can be increased, and distortion or the like of the framework is less likely to occur. In particular, the side plate 11 is provided by the auxiliary chassis 13.
The width between A and the side plate 12 can be kept constant. Therefore, for example, the side plate 11A and / or the side plate 12
The sliding member or the like that moves in the Y direction along the side plate portion 12B can move smoothly. That is, by providing the auxiliary chassis 13, not only the framework structure of the chassis 11 and the side plate 12 can be reinforced, but also the operation of various mechanisms assembled thereto can be stabilized. At both ends of the bottom plate 11C of the chassis 11 on the Y1 side, mounting holes 11f and 11g are respectively formed. In the example shown in FIG. 1 and FIG.
1g is a mounting piece 11f1 protruding from the chassis 11.
And 11g1.

On the other hand, the mounting portions 13E and 13F bent at the lower part of the auxiliary chassis 13 also have mounting holes 13d and 13d.
3e are respectively formed. When the auxiliary chassis 13 is assembled to the chassis 11, the auxiliary chassis 13
The mounting portions 13E and 13F of the chassis 11 are the mounting pieces 11f of the chassis 11.
The mounting holes 11f overlap the mounting holes 13d, and the mounting holes 11g overlap the mounting holes 13e. As shown in FIG. 2, fixing members 18 such as screws are provided with mounting holes 11f and 13d,
And through the mounting holes 11g and 13e, respectively.
The side plate 1 is fastened together with a fixing portion 21 formed on the housing 20.
2 and the auxiliary chassis 13 are fixed to the housing 20 together.

FIG. 3 is a side view showing another embodiment of the present invention. In the embodiment shown in FIG. 3, the mounting pieces 11f1 and 11g1 do not protrude from the bottom plate 11C of the chassis 11, and the mounting holes 11f and 1g1 are located inside the edge of the bottom plate 11C.
1g is drilled. When the mounting portions 13E and 13F of the auxiliary chassis 13 are overlapped on the bottom plate 11C of the chassis 11 as in the above embodiment, the mounting holes 1
1 f overlaps with the mounting hole 13 d, and 11 g overlaps with the mounting hole 13 e, and these are fixed together by the screw 18.

As described above, the leg 1 is moved from the auxiliary chassis 13.
3C and 13D are extended, and the attachment portions 13E and 13F formed by bending the ends thereof are attached to the attachment pieces 11f1, 1 of the chassis 11.
1g1 or the bottom plate 11C.
E, 13F and the mounting pieces 11f1 and 11g1, or the mounting portions 13E and 13F and the bottom plate 11C are fixed to the fixing portion 21 of the housing 20.
With this configuration, the strength of the chassis 11 fixed to the fixing portion 21 can be increased, and the entire chassis 11 and the side plate 12 having the opening can be prevented from being distorted.

In particular, even if a deformation force is applied to the chassis 11 with the screw fixing portions (11f, 11g) as fulcrums,
Since the auxiliary chassis 13 is provided over both the screw fastening portion and the side plate 11A and the side plate 12B of the chassis 11, the chassis 11 is not distorted about the screw fastening portion as a fulcrum. In addition, there is no need to separately provide a fixing mechanism for the fixing portion between the chassis 11 and the housing 20 and a fixing portion for the auxiliary chassis 13 and the housing 20. The chassis 13 can be fixed to the housing 20.

As shown in FIGS. 1 and 2, when the mounting pieces 11f1 and 11g1 are formed on the chassis 11 and the mounting holes 11f and 11g are formed on the mounting pieces 11f1 and 11g1, 13 mounting portions 13E,
13F can prevent the attachment pieces 11f1 and 11g1 from being deformed.

In the above embodiment, the mounting portions 13E and 13F are shown to be overlapped with the bottom plate 11C of the chassis 11. The plate 11B and the auxiliary chassis 13 may be fastened together to the housing 20. Also, the place where the mounting portions 13E and 13F are fastened together is the bottom plate 11C.
However, the present invention is not limited to the end on the Y1 side, and may be, for example, a central part in the Y direction or an end on the Y2 side. Also, as described above, the auxiliary chassis 13 is
The cover is not limited to a cover that covers a part of the chassis 1 but may be a cover that covers the entire chassis 11.

[0027]

According to the present invention described above, not only can the strength of the chassis be reinforced by the auxiliary chassis,
Since the attachment portion of the chassis can be reinforced, distortion of the chassis with the attachment portion to the housing as a fulcrum can be prevented. Further, by connecting the side plates of the chassis with the auxiliary chassis using the auxiliary chassis as a reinforcing member, the strength of the entire chassis can be increased.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a mechanism section of an MD (mini-disc) player as an embodiment of a vehicle-mounted device according to the present invention;

FIG. 2 is a side view of the mechanism shown in FIG. 1 viewed from a direction II.

FIG. 3 is a partial side view of a mechanism showing another embodiment of the present invention;

FIG. 4 is a perspective view conceptually showing a chassis in a conventional vehicle-mounted device;

[Explanation of symbols]

 Reference Signs List 11 chassis 11A side plate 11B rear plate 11C bottom plate 11D opening 11f, 11g mounting hole 11f1, 11g1 mounting piece 12 side plate 13 auxiliary chassis 13C, 13D leg 13E, 13F mounting portion 13d, 13e mounting hole 18 screw (fixing member) Body 21 Fixed part B Mechanism part of in-vehicle equipment (MD player) U Drive unit S1, S2, S3 Elastic support member

Claims (3)

[Claims] 1. A housing, comprising: a housing accommodating a drive unit for a recording medium therein; and a chassis provided in the housing, wherein a mounting portion having a mounting hole is formed in the chassis, and a screw is formed in the mounting hole. In a vehicle-mounted device that is inserted and the mounting portion is screwed and fixed to the housing, an auxiliary chassis is assembled to the chassis, and a mounting portion formed on the auxiliary chassis at the mounting portion of the chassis. Wherein the mounting portions of the chassis and the auxiliary chassis are fixed together by screws to the housing. 2. A pair of side plates provided integrally with or separately from the chassis on both sides of the chassis,
The vehicle-mounted device according to claim 1, wherein the auxiliary chassis functions as a reinforcing member that connects the pair of side plates. 3. The on-vehicle device according to claim 1, wherein the drive unit is supported in the chassis via an elastic support member.