JPH06342320A - Shield structure of electronic equipment - Google Patents

Abstract

PURPOSE:To provide the shield structure of the electronic equipment which maintains stable shield effect for a long period and is low in cost by fitting a fitting member which has an elastic contact part to a shield plate or fitting plate. CONSTITUTION:The fitting member 32 which has the elastic contact part 32a and fitting parts 32b and 32c, shield plates 31 and 37, and the fitting plate are provided, and the fitting member is so constituted that the fitting parts 32b and 32c are fitted to one of the shield 31 and fitting plate and the elastic contact part 32a comes into contact with the other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield structure of an electronic device, for example, a plurality of electronic devices such as a CD-ROM player, a cartridge ROM player and the like with a metal mounting plate (for example, an iron plate). The present invention relates to a shield structure for electronic devices, which are combined with each other through a shield.

[0002]

2. Description of the Related Art Generally, in electronic equipment, a multimedia RO in which a disc, a cassette ROM and the like are combined as an external storage medium in accordance with the sophistication and large capacity of information software.
M devices (electronic devices) have come to be used. For example, as shown in FIG. 4, multimedia ROM device 11
Includes a CD-ROM player 1 using a compact disc and a cartridge ROM player 2 connected via a connector 3. That is, CD-R
The OM player 1 includes a lower case 1A having a rectangular shape and an upper case 1B fitted into the lower case 1A to form a horse-shaped body.
The recorded information in the compact disc is read, and the read data information is supplied to the control unit. Similarly, the cartridge ROM player 2 reads the information in the cartridge ROM 5 and supplies it to the control unit. The control unit is configured to add these pieces of information and execute a program based on more abundant information.

The CD-ROM player 1 and the cartridge ROM player 2 are the upper plate portion 1a of the CD-ROM player 1.
To a metal mounting plate (for example, an iron plate) 7. As shown in FIG. 5, a printed wiring board (not shown) is provided in the control section provided under the upper plate 1a of the CD-ROM player 1, and the printed board shields electromagnetic waves. The periphery is covered with a shield plate 6. The shield plate 6 is electrically connected to the ground to form a shield structure by the claw 9 formed by cutting (bending) a part of the shield plate 6 into contact with the curved portion 7a of the mounting plate 7. is doing.

[0004]

However, in the shield structure shown in FIG. 5 described above, the claw 9 is formed by cutting and raising a part of the shield plate 6, and the material of the shield plate 6 is not elastic. Since the tin-plated steel plate or the like is used, the portion of the claw 9 does not have elasticity. For this reason,
When removing or installing the cartridge ROM player 2, it is only necessary to insert and remove the mounting plate 7 several times, and
However, there is a problem in that metal fatigue causes distortion and the like, electrical connection becomes unstable, and a satisfactory shield effect cannot be obtained. Although it is conceivable that the shield plate itself is made of an elastic material, since the claw 9 can be provided with elasticity, the deformation of the claw 9 can be prevented by inserting and removing the mounting plate 7, but the cost of the shield plate is significantly increased. There was a problem that went up to.

Therefore, the present invention has been made in view of such a conventional problem, and the mounting plate or the shield plate is provided with a mounting member made of an elastic member and having an elastic contact portion. It is an object of the present invention to provide a shield structure for an electronic device, which withstands heat, stabilizes electrical connection, and exhibits a stable shield effect for a long time.

[0006]

SUMMARY OF THE INVENTION The present invention is a shield structure for an electronic device in which a plurality of electronic devices having a shield plate are combined with each other via a mounting plate, and the mounting structure includes a mounting portion and an elastic contact portion. A member is provided, and the attachment portion is attached to one of the shield plate and the attachment plate, and the elastic contact portion is brought into contact with the other to electrically connect.

[0007]

According to the present invention, since the mounting member having the elastic contact portion made of the elastic member is mounted on one of the mounting plate and the shield plate and electrically connected to the other, the shield structure is formed. By the insertion and removal of the elastic contact portion, even if the elastic contact portion receives a force, the electric connection is maintained by the elastic force, the elastic contact portion is not broken or distorted, and the stable shield effect is maintained for a long period of time.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an embodiment of a shield structure for an electronic device according to the present invention. First, the configuration will be described. First, 20 is a multimedia RO that is an electronic device.
The multimedia ROM device 20, which is an M device, has a top-loading CD-ROM player 21 for setting and playing a disc such as a compact disc and a cartridge ROM unit 22 for playing the cartridge ROM 24. The CD-ROM player 21 has a head portion 21 of the CD-ROM player 21 protruding upward on one side.
a and a flat body portion 21b on the other side. A control section 21c of the CD-ROM player 21 is provided inside the body section 21b. The cartridge ROM unit 22 is mounted on the body portion 21b.

At the top of the head 21a of the CD-ROM player 21, there is provided a lid 27 for opening and closing the loading port of the disc loading mechanism. One side wall portion 2 of the head portion 21a
1d is provided with a connector 28, which faces the connector 28 and is provided with a side wall 22 of the cartridge ROM unit 22.
A plug 29 connected to the connector 28 is provided in a.

A board 30 is incorporated in the control section 21c of the CD-ROM player 21, and information can be exchanged with the cartridge ROM unit 22 via a connector 28 and a connector 49. Further, upper and lower shield plates 31 for shielding electromagnetic waves are provided so as to surround the substrate 30.

The cartridge ROM unit 22 is provided with a cartridge loading portion 23 which can be opened upward for mounting the cartridge ROM 24 on the upper surface of the upper plate portion surface 22b. The control unit 2 is provided below the upper plate 22b.
2c is provided. The lower plate portion 22d of the cartridge ROM unit 22 is provided with a pair of engagement holes 35 and screw mounting holes 36. These engagement holes 3
5 and the screw mounting hole 36 corresponding to the mounting plate 34 described later.
Includes a curved portion 34a bent upward and a screw hole 34
d is provided, and the mounting plate 34 is screwed by engaging the curved portion 34a with the engagement hole 35 and aligning the screw hole 34d with the screw mounting hole 36.

A substrate 25 is built in the cartridge ROM unit 22 and is connected to a connector 28 of the CD-ROM player 21 via a plug 29 so that information can be exchanged. Also, the upper and lower shield plates 3 for shielding electromagnetic waves are provided on the substrate 25 so as to surround it.
7 is provided.

As shown in FIG. 1, the mounting plate 34 is a metal-made rectangular plate (for example, an iron plate), and has a size smaller in width and length than the lower plate portion 22d of the cartridge ROM unit 22. ing. Then, a total of six L-shaped curved portions 34a, which are cut and bent upward, and two L-shaped curved portions 34b and c, which are cut and bent downward, are formed in a part thereof. . Cartridge ROM unit 22
When the mounting plate 34 and the mounting plate 34 are mounted on the CD-ROM player 21, the curved portions 34b and 34c curved downward are
The OM regenerator 21 is inserted into four engaging holes 33 (33a, 33a, 33b, 33b) formed in the body portion 21b so that each engages.

As shown in FIG. 3, reference numeral 32 denotes a mounting member, and the mounting member 32 is made of an elastic member such as phosphor bronze, and is inclined obliquely upward from an annular flat plate portion 32d and a part of the inner side of the flat plate portion 32d. Elastic contact portion 32a with a curved tip
And two hook portions 32b which are bent from both ends of the flat plate portion 32d in a U shape and are provided to face each other, and two L-shaped bent portions which are provided at positions orthogonal to the pair of hook portions 32b. 32c. The hook 32b is a pair of rectangular holes 3 formed in the upper plate portion 31a of the shield plate 31.
8 and the mounting member 32 is attached to the upper plate portion 3 of the shield plate.
It engages with 1a and is electrically connected. Also,
The L-shaped bent portion 32c is fitted in a pair of rectangular holes 39A, 39B formed in the upper plate portion 31a, and is positioned when the attachment member 32 is attached, and the attachment member 32 is attached to the shield plate 31. It is installed.

Further, 40 is a U-shaped spring which is a mounting member, and the spring 40 is made of a metal (for example, phosphor bronze) elastic member and is an engaging hole formed in the lower plate portion 22d of the cartridge ROM unit 22. The base end portion 40a, which is inserted into the shaft 42 and is curved in an L shape, contacts the mounting plate 34. Further, the protruding end portion 40b of the spring elastically contacts the shield plate 37, and the shield plate 37 causes the spring 4 to move.
It is configured to be electrically connected to the mounting plate 34 via 0. On the other hand, the elastic contact portion 32a is provided on the upper plate portion 31a of the shield plate 31 provided in the CD-ROM player 21.
The mounting member 32 having the above is attached, and the elastic contact portion 32a of the upper portion is provided with the curved portions 34b, 34 of the mounting plate 34.
It is configured to be electrically connected to c. In this way, the shield plate 37, the mounting plate 34, and the shield plate 31 are electrically connected to each other to form a shield structure.

Next, the operation will be described. Cartridge R
The OM unit 22 is the body portion 21 of the CD-ROM player 21.
When mounting it on the b, as shown in FIG.
4 is the lower plate portion 22d of the cartridge ROM unit 22.
First, it is screwed by the screw 26. At this time, the curved portion 34a of the mounting plate 34 is mounted so as to be inserted into the engagement hole 35 of the lower plate portion 22d. Then the cartridge ROM
Mounting plate 3 attached to lower plate portion 22d of unit 22
The cartridge ROM unit 22 is attached to the CD-ROM player 21 by inserting the curved portions 34b and 34c of No. 4 into the engaging holes 33a and 33b formed in the body portion 21b of the CD-ROM player 21, respectively. To do. The shield plate 37 and the mounting plate 34 provided in the cartridge ROM unit 22 and the shield plate 31 provided in the CD-ROM player 21 are the spring 40 and the bending portion 34c.
And elastic contact portion 32a and bending portion 34a and bending portion 34c
And the elastic contact portion 32a electrically connect to form a shield structure. When the cartridge ROM unit 22 is detached from the CD-ROM player 21, it can be easily detached by performing an operation reverse to the mounting.

In this way, when the cartridge ROM unit 22 is attached to or detached from the CD-ROM player 21, the elastic contact member 32a is loaded by the movement of the cartridge ROM unit 22, but the elastic contact member 32a is an elastic member. Since it is configured, it is possible to prevent the load from being bent or distorted. Further, the elastic contact member 32a is the hook 32 of the mounting member 32.
b and the hole 38 provided in the shield plate 31a, the cartridge ROM unit 2 is securely engaged.
It does not come off when the 2 is attached or removed. Further, only the elastic contact portion 32a is made of an elastic member, and the shield plate 31
Since it is a conventional tin-plated steel sheet, the cost can be reduced.

[0018]

As described above, according to the present invention,
By mounting the mounting member that has the elastic contact part to the mounting plate or shield plate, it is possible to prevent it from breaking or distorting even when the mounting plate is inserted and removed, and it is possible to maintain a stable shielding effect for a long period of time, and also increase the cost. Is also suppressed.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view showing an embodiment of a shield structure for an electronic device according to the present invention.

FIG. 2 is a cross-sectional view of main parts of the electronic device shown in FIG.

FIG. 3 is an enlarged perspective view of the mounting member shown in FIG.

FIG. 4 is an overall perspective view showing a conventional electronic device.

5 is a cross-sectional view of main parts of the electronic device shown in FIG.

[Explanation of symbols]

 20 multimedia ROM device (electronic device) 21 CD-ROM player 22 cartridge ROM unit 34 mounting plate 31, 37 shield plate 32, 40 mounting member 32a elastic contact portion

Claims (1)

[Claims] 1. A shield structure for an electronic device in which a plurality of electronic devices having a shield plate are combined with each other via a mounting plate, the shield structure comprising: a mounting member having a mounting portion and an elastic contact portion. A shield structure for an electronic device, characterized in that the mounting portion is mounted on one of the mounting plates, and the elastic contact portion is brought into contact with the other of the mounting plates for electrical connection.