JP2912079B2 - Electronic device housing mating structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing for a small electronic device such as a portable telephone, and more particularly to a fitting structure of a thin main body, a back cover, and a battery cover.

[0002]

2. Description of the Related Art FIGS. 4 to 6 show an example of a conventional fitting structure of such a case. 4 is an exploded perspective view, FIG. 5 is a longitudinal sectional view of the fitted state, and FIG. 6 is a transverse sectional view thereof.
This electronic device includes a main body case 6, a back cover 7, and a battery cover 8. The main body case 6 forms a connection piece by an upper piece 6a and a lower piece 6b provided on both walls in the longitudinal direction, and side pieces 6c provided on both walls in the short direction. This side piece 6
Notches are provided on both sides of c. Also, the back cover 7 has an upper piece 7a and a lower piece 7 corresponding to the respective coupling pieces.
b, and a side groove 7c is further provided. Also, this side groove 7c
The ribs 7e are provided on the inside of both walls at positions away from both ends. Further, the battery 9 can be stored in a part of the back cover 7, and the battery cover 8 can be fitted to the back cover 7.

In this configuration, the upper piece 7a of the back cover 7
Is engaged with the upper piece 6a of the main body case 6, and when the back cover 7 is rotated with the upper piece 6a as a fulcrum, the lower piece 7b is fitted with the lower piece 6b of the main body case 6, and at the same time, The 6 side pieces 6c are fitted into the side grooves 7c of the back cover 7, respectively. Here, the side wall 6d of the main body case 6 is slide-fitted so as to be sandwiched between the side wall 7d of the back cover 7 and the rib 7e, but the side piece 6c does not interfere with the operation of the side wall 6d. When the back cover 7 is fitted, it initially comes into contact with the inside of the side wall 7d of the back cover 7 and is pushed and tilted toward the inside of the main body case 6. Are completely fitted into the side grooves 7c.

[0004]

In such a conventional housing fitting structure, the main body case 6 and the back cover 7 are fitted at four places by respective pieces provided on the upper, lower, left and right sides. The back covers 7 are both box-shaped and have a sufficient length in the thickness direction, and therefore have sufficient rigidity, particularly bending strength, at the component level. Therefore, the housing assembled with the main body case and the back cover has sufficient housing strength. It is also possible to prevent the opening of the body joint and the like.

[0005] However, when the housing is made thin, it is difficult to secure rigidity by forming a box shape, since both the main body case 6 and the back cover 7 cannot have a sufficient length in the thickness direction. Become. Further, in the structure in which the main body case 6 and the back cover 7 are fitted only at each of the four upper, lower, left, and right pieces, sufficient rigidity can be obtained in combination with the reduction in rigidity of the component itself due to the reduction in thickness. Gone
As a result, there is a problem that the opening of the fitting joint easily occurs. An object of the present invention is to provide a housing fitting structure in which a sufficient fitting strength is obtained even when the housing is made thinner, and the opening of the fitting joint is prevented.

[0006]

A housing fitting structure according to the present invention is characterized in that an upper piece and a lower piece are provided on the back sides of both longitudinal walls of a main body case, respectively, and the back sides of both short walls are provided. Is provided with a plurality of side pieces. Further, an upper piece and a lower piece fitted to the upper piece and the lower piece of the main body case are provided on the back side of both longitudinal walls of the back cover fitted to the back cover, respectively. A plurality of L-shaped side grooves to be fitted to a plurality of side pieces of the main body case are provided on both side surfaces in the direction. And
When the side pieces are fitted into the side grooves while being slid, the upper piece and the lower piece are respectively fitted. Furthermore, with the battery cover to be fitted to the back cover provided upper piece and a lower piece, the guide piece provided on both side walls, an upper piece and a lower piece of the battery cover is fitted respectively on the back cover While providing an upper groove and a lower groove,
On both side walls, guide grooves are provided in which guide pieces of the battery cover are slidably fitted.

[0007]

The side piece provided on the main body case and the side groove provided on the back cover are slidably engaged with each other, and the upper piece and the lower piece are engaged with each other to fit the main body case and the back cover.
Further, the back cover and the battery cover are slid and engaged by the guide grooves and the guide pieces, and furthermore, the upper and lower pieces are engaged by the grooves to fit the back cover and the battery cover.

[0008]

Next, the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of one embodiment of a housing fitting structure in which the present invention is applied to a thin portable telephone. FIG. 2 is a longitudinal sectional view in the fitted state, and FIGS. 3 (a) and 3 (b) are transverse sectional views along the line AA and BB in FIG. 1 in the fitted state. In this telephone, a housing is formed by a main body case 1 and a back cover 2 fitted to the main body case 1, and an operation unit 3 configured as a movable case is separately provided on the surface of the main body case 1,
The operation unit 3 has a structure that expands and contracts along the main body case 1. For this reason, the main body case 1 has a box-shaped upper part and a shallow box-shaped or plate-shaped lower part. The main body case 1 has an L-shaped upper piece 1a and a lower piece 1b which are respectively directed upward in the drawing on upper and lower wall surfaces on the back surface.
The left and right side surfaces have four L-shaped side pieces 1c toward the rear surface.

On the other hand, the back cover 2 is configured such that the battery 5 is accommodated in the lower portion of the front surface and the battery cover 4 is attached. The back cover 2 is formed in a box shape at an upper portion, and a plate shape at a lower portion to secure a space for accommodating the battery 5. A projecting upper piece 2a and a lower piece 2 are formed on the upper and lower wall surfaces on the back surface of the back cover so that the upper piece 1a and the lower piece 1b of the main body case 1 can engage with each other.
b, and has L-shaped side grooves 2c on both left and right sides so that the side pieces 1c can be fitted.

In the battery housing portion below the surface of the back cover 2, an upper groove 2e and a lower groove 2f are provided in each of the upper wall and the lower wall, and a guide groove having a concave cross section along both left and right walls. 2d. Further, the battery cover 4 has a box-like shape and one side surface is opened, and an upper piece 4b and a lower piece 4c are formed on each part of the upper edge and the lower wall,
L-shaped guide piece 4a facing inward along both left and right walls
have.

According to this configuration, the main body case 1 and the back cover 2 are aligned with the side piece 1c and the side groove 2c, and slide the back cover 2 in the longitudinal direction along the side groove 2c. The upper piece 1 of the main body case 1
a and the lower piece 1b engage with the upper piece 2a and the lower piece 2b of the back cover 2, respectively, and the main body case 1 and the back cover 2 are fitted together. After the battery 5 is placed on the lower surface of the back cover 2, the guide piece 4 a of the battery cover 4 is fitted to the lower end of the guide groove 2 d of the back cover 2 and slide-fitted in the longitudinal direction, so that the back cover 2 The upper and lower grooves 2e and 2f engage with the upper and lower pieces 4b and 4c of the battery cover 4, so that the battery cover 4 can be fitted to the back cover 2.

Therefore, the main body case 1 and the back cover 2
Are slidably engaged with the side pieces 1c and the side grooves 2c, and then the upper pieces 1a, 2a and the lower pieces 1b, 2b are engaged and fitted. It can be made strong, and even if it is deformed due to an external force applied, it can be attracted to each other and the opening of the fitting joint can be prevented. Further, the battery cover 4 is slidably engaged with the guide groove 2d and the guide piece 4a, and the upper piece 4b and the lower piece 4c are engaged with and engaged with the upper groove 2e and the lower groove 2f, respectively. And the rigidity of the back cover 2 by the slide fitting and the rigidity of the back cover 2 and the battery cover 4 by the sliding fit can be increased, and the strength of the thin portions of the main body case 1 and the back cover 2 can be sufficiently increased. it can. Further, since the main body case 1, the back cover 2, and the battery cover 4 are slidably fitted, they can be fitted with a small force, and maintenance can be easily performed.

[0013]

As described above, according to the present invention, after the side piece provided on the main body case and the side groove provided on the back cover are slid, the upper piece and the lower piece are engaged with each other. Therefore, the fitting force between the main body case and the back cover can be increased, and the fitting operation can be easily performed, while preventing the opening of the fitting joint and the like. Further, the back cover and the battery cover are slidably engaged with the guide groove and the guide piece, and furthermore are engaged with the upper and lower pieces with the groove, so that the fitting strength between the back cover and the battery cover can be increased . This
Battery case, back cover, and battery cover.
In the slave device housing, fitting of the main body case and the back cover,
And the mating structure of the back cover and the battery cover
The rigidity of the structure is increased and the synergistic effects
Thus, there is an effect that the rigidity of the entire housing can be increased.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view of an embodiment in which the present invention is applied to a portable telescopic telephone.

FIG. 2 is a longitudinal sectional view of an assembled state of FIG.

FIG. 3 is a cross-sectional view taken along line AA and line BB in an assembled state of FIG. 1;

FIG. 4 is a partially exploded perspective view of an example of a conventional housing fitting structure.

FIG. 5 is a vertical sectional view of the assembled state of FIG. 4;

FIG. 6 is a lateral sectional view of the assembled state of FIG. 4;

[Explanation of symbols]

1 body case 1a upper piece 1b lower piece
1c Side piece 2 Back cover 2a Upper piece 2b Lower piece
2c Side groove 2d Guide groove 2e Upper groove 2f
Lower groove 3 Operating part 4 Battery cover 4a Guide piece 4b Upper piece
4c Lower piece 5 Battery

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-177796 (JP, A) JP-A-4-105558 (JP, U) JP-A 62-101272 (JP, U) (58) Investigation Field (Int.Cl. ⁶ , DB name) H05K 5/02 H05K 5/03

Claims (1)

(57) [Claims] 1. A body case, a back cover fitted to the body case, and a battery cover fitted to the back cover.
In the electronic device housing composed of the above, an upper piece and a lower piece are respectively provided on the back side of both longitudinal walls of the main body case.
And a plurality of side pieces on the back side of both lateral walls
The back cover has upper and lower pieces respectively fitted on the upper and lower pieces of the main body case on the back side of both longitudinal walls of the back cover, and has the main body on both lateral sides in the short direction. K
A plurality of L-shaped side grooves fitted into a plurality of side pieces of the scan, the side pieces when fitted by sliding into the side groove, the upper piece and the lower Pieces are fitted to each other , and the battery cover has an upper piece.
And a lower piece, with guide pieces on both side walls,
The upper and lower pieces of the battery cover are attached to the back cover.
It has an upper groove and a lower groove that are fitted respectively, and both side walls have
A guide in which the guide piece of the battery cover is slid and fitted.
A fitting structure for an electronic device housing , having a groove .