JPH1013052A - Electronic device housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the outer dimensions of a part of a housing and realize miniaturization and light weight of an electronic device by attaching a shim which is in press-contact with a wall surface of an opening at an inner side of both housings and can be deformed elastically. SOLUTION: After a shim attaching part 24f of a packing 24 is forced into a packing attaching hole 26a of a shim 25 and the packing 24 is fixed to a first housing 22, a second housing 23 is fixed to the first housing 22 with an opening wall of the second housing 23 faced between both sealing parts 24c, 24d of the packing 24. Then, the first housing 22 and the second housing 23 are sealed by liquid and electromagnetic shielding is carried out as the shim 25 comes into contact with opening wall surfaces 22d, 23d. In the process, a pressing piece 24E of the packing 24 is pressed and deformed between both opening edge faces 22c, 23c and enlarged in a direction (a packing width direction) perpendicular to a pressing direction and the enlarged part comes into close contact with each of the opening edge faces 22c, 23c. Furthermore, each of elastic pieces 27, 28 is elastically deformed and each of bent parts 27a, 28a comes into contact with the opening wall surfaces 22d, 23d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device housing suitable for use in communication equipment for performing digital or analog signal processing.

[0002]

2. Description of the Related Art In general, electronic equipment is required to be electromagnetically shielded (to prevent unnecessary radiation from leaking or entering) and to be liquid-sealed in order to prevent electromagnetic wave interference and rainwater intrusion. I have.

Conventionally, this type of electronic equipment housing is disclosed in, for example, Japanese Utility Model Application Laid-Open No. 4-111785 as "waterproof / conductive structure of housing" and is configured as shown in FIG. This will be described with reference to the same drawing. In the same drawing, an electronic device housing denoted by reference numeral 1 includes a box 2, a cover 3, a packing 4, and an elastic piece 5.

The box 2 is formed of a box made of a conductive member having an opening 2a opened on one side, and houses an electronic component mounting board (not shown) and the like inside. A stat 6 having a screw hole 6a opening at the tip end surface is provided upright on the outer peripheral edge of the outer opening of the box body 2.

[0005] The lid 3 is fixed to the box 2 so as to be openable and closable by mounting screws 7 screwed into the screw holes 6a, and is formed of a box-shaped conductive member like the box 2. Two L-shaped metal frames 9, 10 inside and outside forming a packing mounting groove 8 extending along the periphery of the opening 2 a are mounted on the back surface of the lid 3. The cover 3 is provided with a screw insertion hole 3a through which the mounting screw 7 is inserted.

The gasket 4 is mounted in the gasket mounting groove 8 with its front end pressed against the periphery of the opening 2a, and is entirely formed of a frame-like flexible member made of rubber or the like. I have.

The elastic piece 5 comprises two inner and outer conductive pieces 12 and 13 having a large number of curled portions 12a and 13a arranged in parallel through a slit 11, and each of the curled portions 12a with respect to the L-shaped metal frames 9 and 10. , 13a are pressed against the periphery of the opening 2a.

By the elastic pieces 5 (conductive pieces 12 and 13), the box 2 and the lid 3 are electrically connected, and the packing 4 outside the packing mounting groove 8 is pressed and held.

In order to electromagnetically shield and liquid seal the electronic device housing 1 configured as described above, conductive pieces 12 and 1 are provided inside the L-shaped metal frame 9 and outside the L-shaped metal frame 10, respectively.
3 and then insert the conductive piece 1 into the packing mounting groove 8.
The packing 2 is mounted by pushing and spreading the packings 2 and 13, and then the lid 3 is fixed to the box 2 with the mounting screws 7.

As a result, the tip end of the packing 4 is pressed and deformed and spreads in a direction perpendicular to the pressing direction (the packing width direction), and this expanded portion comes into close contact with the opening periphery of the opening 2a, and the conductive pieces 12 and 13 is elastically deformed and the curl portion 1 is deformed.
2a and 13a are pressed.

[0011]

By the way, in the conventional electronic device housing, a liquid seal packing 4 and an electromagnetic shielding elastic piece 5 are provided between the back surface of the lid 3 and the periphery of the opening 2a. (Conductive pieces 12, 13) are arranged,
The sealing part by the packing 4 and the conduction part by the conductive pieces 12 and 13 have been formed in the electronic component mounting area.

As a result, in order not to change the component mounting volume in the box 2, there is a problem that the outer dimensions of the box 2 become large and the electronic equipment becomes large and heavy.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is possible to reduce the outer dimensions of a part of the housing, thereby reducing the size and weight of the electronic equipment. It is intended to be provided.

[0014]

According to a first aspect of the present invention, there is provided an electronic apparatus housing, comprising: a first housing made of a conductive member having a first opening; A second housing made of a conductive member having a second opening and capable of being opened and closed in the housing, and an opening end face and an opening interposed between the second housing and the first housing; The structure includes a packing having a sealing portion that can be in close contact with the wall surface, and an elastically deformable shim attached to the packing and pressed against the inner opening wall surface of both the inner and outer opening wall surfaces of both housings. Therefore, the first housing and the second housing are liquid-sealed by the close contact with the opening wall surface and the opening end surface of the packing, and are electromagnetically shielded by the contact of the shim with the inner opening wall surfaces of both housings.

According to a second aspect of the present invention, there is provided the electronic apparatus housing according to the first aspect, wherein the shim is a mounting portion for the packing and the shim body is formed integrally with the shim body and pressed against the opening wall surfaces of both housings. And a large number of elastic pieces. Therefore, the electromagnetic shielding of the first housing and the second housing is performed by the contact of the elastic pieces with the inner opening wall surfaces of the two housings.

According to a third aspect of the present invention, in the electronic device housing of the second aspect, each elastic piece is formed by providing a large number of slits at both end edges of the shim. Therefore, the electromagnetic shielding of the first housing and the second housing is performed by the contact of each elastic piece with the inner opening wall surface of both housings.

According to a fourth aspect of the present invention, in the electronic device housing according to the first aspect, a pressing member corresponding to an opening end surface of both housings is provided in a sealing portion of the packing. Therefore, liquid sealing between the open end faces of both housings is performed by the close contact of the presser to each open end face.

According to a fifth aspect of the present invention, there is provided the electronic apparatus housing according to the first or fourth aspect, wherein the packing has a pressing portion corresponding to the inner and outer opening wall surfaces of the two housings in a substantially H-section view.
It is configured to be formed by a letter-shaped packing. Therefore, liquid sealing on the inner and outer opening wall surfaces of both housings is performed by close contact of each pressing portion with each opening wall surface.

According to a sixth aspect of the present invention, in the electronic device housing according to the first or fourth aspect, the packings correspond to the inner and outer opening walls of the first housing and the outer opening walls of the second housing. , And is formed by a packing having a substantially h-shaped cross section when viewed from above. Therefore, the first
Liquid sealing on the inner and outer opening wall surfaces of the housing and the outer opening wall surface of the second housing is performed by the close contact of each pressing portion to each opening wall surface.

According to a seventh aspect of the present invention, there is provided the electronic device housing according to the first or fourth aspect, wherein the packing has a pressing portion corresponding to the outer opening wall surface of both housings in a substantially sectional view.
It is configured to be formed by a letter-shaped packing. Therefore, the liquid sealing on the outer opening wall surfaces of both housings is performed by the close contact of each pressing portion to each opening wall surface.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic apparatus housing according to a first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view showing a main part of an electronic device housing according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing an external appearance of the electronic device according to the first embodiment of the present invention. In the figure, an electronic device housing denoted by reference numeral 21 is a first housing 22.
, A second housing 23, a packing 24, and a shim 25. An electronic component mounting board (not shown) and the like are housed in the electronic device housing 21.

The first housing 22 is formed of a rectangular box made of a conductive member having a first opening 22a opening upward. The first housing 22 has a stepped surface 22b formed by cutting out the outside of the opening wall. The first housing 22 includes a packing 24 and a shim 25.
End face 22c serving as a mounting portion for the vehicle and two inner and outer opening wall surfaces 2
2d and 22e are formed.

The second housing 23 is provided on the first housing 22 so as to be openable and closable, and is formed of a square box made of a conductive member having a second opening 23a that opens downward. The second housing 23 has a stepped surface 23b formed by cutting out the outside of the opening wall. And the second
Similarly to the first housing 22, the housing 23 has an opening end surface 23c as a mounting portion for the packing 24 and the shim 25, and two inner and outer opening wall surfaces 23d and 23e.

The packing 24 is interposed between the first housing 22 and the second housing 23, and has a first opening 22a as a whole.
Opening end face 22c and opening wall faces 22d, 22e and the second
Opening end surface 23c of opening 23a and opening wall surfaces 23d, 23
e, and is formed of a flexible member having a substantially H-shape in cross section including a shim mounting portion 24f that has sealing portions 24a to 24e that can be brought into close contact with e and that protrudes in a direction away from the opening wall surfaces 22d and 23d.

Of these sealing portions 24a to 24e, the sealing portions 24a to 24d are respectively formed by the corresponding opening wall surfaces 22d, 22d.
e, 23d, and 23e are slightly curved in the direction of pressing. Pressing portions 24A to 24D corresponding to the respective opening wall surfaces 22d, 22e, 23d, and 23e are provided at the tips of the sealing portions 24a to 24d.

The sealing portion 24e has two openings 22a, 23
The pressing element 24E corresponding to the opening end faces 22c and 23c of FIG.

The shim mounting portion 24f is composed of a number of protrusions arranged in parallel in the longitudinal direction of the packing.

The shim 25 is a shim body 26 having a number of packing mounting holes 26a corresponding to the respective shim mounting portions 24f.
And the opening wall surface 22d of the first housing 22 and the second housing 23
And a plurality of elastic pieces 27 and 28 having bent portions 27a and 28a pressed against the opening wall surface 23d.

The shim body 26 is attached to the packing 24 by press-fitting the shim attaching portion 24f into the packing attaching hole 26a.

Each of the elastic pieces 27 and 28 is integrally formed by providing a large number of slits 29 at both ends of the shim 25.

In the electronic device housing thus constructed, the shim 25 and the packing 24 are integrated by pressing the shim mounting portion 24f of the packing 24 into the packing mounting hole 26a of the shim 25 in advance. 24a, 2 between stop parts
4b with the opening wall of the first housing 22 facing the first housing 22.
After the packing 24 is mounted on the first housing 22, the second housing 23 is mounted on the first housing 22 with the opening wall of the second housing 23 facing between the sealing portions 24c and 24d of the packing 24. Body 22
And the second housing 23 is provided with a packing 24 (pressing portions 24A to 2A).
4D, the sealing is performed by the close contact between the opening end surfaces 22c, 23c of the pressing element 24E) and the opening wall surfaces 22d, 22e, 23d, 23e, and the opening of the shim 25 (the bent portions 27a, 28a of the elastic pieces 27, 28). Electromagnetic shielding is achieved by contact with the wall surfaces 22d and 23d.

At this time, the pressing element 24E of the packing 24
Is pressed and deformed between the two open end faces 22c and 23c and spreads in a direction perpendicular to the pressing direction (the packing width direction), and the expanded portion comes into close contact with each of the open end faces 22c and 23c.
Further, each of the elastic pieces 27 and 28 is elastically deformed so that each of the bent portions 2
7a and 28a contact the opening wall surfaces 22d and 23d.

Next, the second embodiment and the third embodiment of the present invention will be described.
The embodiment will be described with reference to FIGS. 3 and 4. FIG. (Second Embodiment) FIG. 3 is a cross-sectional view showing a main part of an electronic apparatus housing according to a second embodiment of the present invention. In FIG. 3, the same members as those in FIGS. And a detailed description is omitted. In the figure, an electronic device housing denoted by reference numeral 31 includes a first housing 22, a second housing 23, a packing 32, and a shim 25.

The packing 32 is interposed between the first housing 22 and the second housing 23, and has a first opening 22a as a whole.
End face 22c and opening wall face 22e of the first and second openings 2
3a has sealing portions 32a to 32d that can be in close contact with the opening end surface 23c and the opening wall surfaces 23d and 23e.
It is formed of a flexible member having a substantially h-shaped cross section including a shim mounting portion 32e protruding in a direction away from 23d.

Of the sealing portions 32a to 32d, the sealing portions 32a to 32c correspond to the opening wall surfaces 22e and 23, respectively.
It is slightly curved in the direction to press d and 23e. Pressing portions 32A corresponding to the respective opening wall surfaces 22e, 23d, and 23e are provided at the tips of the sealing portions 32a to 32c.
To 32C are provided.

The sealing portion 32d has both openings 22a, 23
A pressing element 32D corresponding to the opening end faces 22c and 23c of FIG.

The liquid sealing and electromagnetic shielding of the housing of the electronic device according to the present embodiment are performed in the same manner as in the first embodiment, and a description thereof will be omitted.

(Third Embodiment) FIG. 4 is a sectional view showing a main part of an electronic apparatus housing according to a third embodiment of the present invention.
2 and the same members as those in FIG.
Detailed description is omitted. In the figure, an electronic device housing indicated by reference numeral 41 includes a first housing 22, a second housing 23, a packing 42, and a shim 25.

The packing 42 is interposed between the first housing 22 and the second housing 23, and has a first opening 22a as a whole.
End face 22c and opening wall face 22e of the first and second openings 2
3a, which has sealing portions 42a to 42c that can be in close contact with the opening end surface 23c and the opening wall surface 23e, and includes a shim mounting portion 42d protruding in a direction away from the opening wall surfaces 22d, 23d. It is formed by a sex member.

Of the sealing portions 42a to 42c, the sealing portions 42a and 42b are respectively provided with the corresponding opening wall surfaces 22e,
23e is curved slightly in the direction of pressing. Pressing portions 42A, 42B corresponding to the respective opening wall surfaces 22e, 23e are provided at the distal ends of the sealing portions 42a, 42b.

The sealing portion 42c has two openings 22a, 23
A pressing element 42C corresponding to the opening end faces 22c and 23c of FIG.

Note that the liquid sealing and electromagnetic shielding of the electronic device housing in the present embodiment are performed in the same manner as in the first embodiment, and a description thereof will be omitted.

In each of the embodiments described above, an example in which the present invention is used for a communication device has been described. However, the present invention is not limited to this, and it goes without saying that the present invention can be used for other electronic devices.

[0044]

As described above, according to the present invention, a first housing made of a conductive member having a first opening, and a second opening provided in the first housing so as to be openable and closable are provided. A second housing made of a conductive member, a packing interposed between the second housing and the first housing, and having a sealing portion capable of closely contacting the opening end surfaces and the opening wall surfaces of both openings; An elastically deformable shim that is attached to the packing and presses against the inner opening wall surface of the inner and outer opening walls of both housings, so that the first housing and the second housing are moved to the opening wall surface and the opening end surface of the packing; And the electromagnetically shielded by contact of the shim with the inner opening wall surfaces of both housings.

Therefore, since the sealing by the packing and the conduction by the shim can be performed outside the electronic component mounting area, the external dimensions of a part of the housing can be reduced, and the size and weight of the electronic device can be reduced. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a main part of an electronic device housing according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an external appearance of an electronic device housing according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating an electronic device housing according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating an electronic device housing according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a conventional electronic device housing.

DESCRIPTION OF SYMBOLS 21 Electronic device housing 22 First housing 22a First opening 22c Opening end surface 22d, 22e Opening wall surface 23 Second housing 23a Second opening 23c Opening end surface 23d, 23e Opening wall surface 24 Packing 24a- 24e Sealing part 24E Presser 25 Shim 26 Shim body 27, 28 Elastic piece

Claims (7)

[Claims] A first housing made of a conductive member having a first opening; and a second housing made of a conductive member having a second opening and provided on the first housing so as to be openable and closable. A packing interposed between the second housing and the first housing, the packing having a sealing portion capable of being in close contact with the opening end surfaces and the opening wall surfaces of the opening portions; An electronic device housing comprising: an elastically deformable shim that presses against an inner opening wall surface of both inner and outer opening walls of the housing. 2. The shim includes a shim main body serving as a mounting portion for the packing, and a number of elastic pieces formed integrally with the shim main body and pressed against the opening wall surfaces of the two housings. The electronic device housing according to claim 1, wherein: 3. The electronic device housing according to claim 2, wherein said elastic piece is formed by providing a large number of slits at both end edges of said shim. 4. The electronic device housing according to claim 1, wherein a presser corresponding to an opening end face of each of the housings is provided at a sealing portion of the packing. 5. The packing according to claim 1, wherein the packing is formed of a packing having a substantially H-shaped cross section when the packing has pressing portions corresponding to the inner and outer opening walls. Electronic equipment housing. 6. The packing is formed by a packing having a substantially h-shaped cross-section having a pressing portion corresponding to the inner and outer opening wall surfaces of the first housing and the outer opening wall surface of the second housing. Claim 1 or Claim 4 characterized by the above-mentioned.
The electronic device casing according to the above. 7. The packing according to claim 1, wherein the packing is formed by a packing having a substantially T-shaped cross-section having a pressing portion corresponding to an outer opening wall surface of the both housings. Electronic equipment housing.