JP2001345900A - Sealing structure for portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve sealing property and to reduce preparation cost, in a seal structure for portable telephone set. SOLUTION: A body case 10 is provided with an engaging part 12, a display part cover 20 is provided with a part 22 to be engaged, and the part 22 to be engaged is engaged with the engaging part 12 in a detaching direction X of the display part cover 20. Thus, the display part cover 20 is fixed on the body case 10, a mounting groove 24 is formed on the display part cover 20, an endless rubber ring 30 is mounted in the mounting groove 24, and the state of engaging the engaging part 12 and the part 22 to be engaged is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a seal structure for a portable telephone.

[0002]

2. Description of the Related Art Conventionally, a portable telephone shown in FIG. 4 is provided with a display section 50 for displaying various information such as a telephone number, a communication state, and a battery charge state. The display unit 50 is provided with a liquid crystal display panel L for displaying the information and a transparent display unit cover 52.
Conventionally, the display unit cover 52 is attached to the main body case 51 by a frame-shaped adhesive material 53 made of an adhesive material or an adhesive tape.
, The seal of the display unit 50 is achieved.

However, since the portable telephone is always carried in a pocket or a bag, various stresses are applied to the portable telephone, and the main body case 51 is warped. Therefore, a gap is formed between the main body case 51 and the display unit cover 52 at the adhesive material 53. Therefore, there is a possibility that foreign matter such as dust may enter from the gap, or water droplets may enter from the gap when the main body is wet by rain or the like.

On the other hand, a thin sponge rubber sheet is inserted between the display unit cover 52 and the main body case 51. However, the sponge rubber deteriorates with time, causing cracks and the like, resulting in a good seal. May not be obtained. In addition, since the adhesive material 53 and the sponge sheet are formed by punching these materials into a frame shape in a processing step, a large amount of material is discarded.
This leads to higher costs. In particular, in recent years, the use of portable telephones for e-mail terminals and the like has emerged, and the liquid crystal display panels have tended to be larger, which may significantly increase the production cost.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the sealing performance and reduce the manufacturing cost in a sealing structure for a portable telephone.

[0006]

In order to achieve the above object, the present invention relates to a portable telephone having a liquid crystal display panel provided between a main body case and a display cover. The display section is provided by providing an engagement section on the case and providing an engaged section on the display section cover, wherein the engaged section is engaged with the engagement section in a direction in which the cover is attached and detached. By fixing the cover to the main body case, forming a mounting groove in the display unit cover, mounting an endless rubber ring in the mounting groove, and maintaining the engaged state of the engaging portion and the engaged portion, Sealing is achieved by the rubber ring being pressed against the main body case or the liquid crystal display panel.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1A and 1B, the portable telephone has a display unit 2 on which various information is displayed. The display unit 2 includes a liquid crystal display panel L, a display unit cover 20, and a main body case 10. The display unit cover 20 is made of, for example, a transparent resin, and is fixed to a mounting recess 11 provided in the main body case 10 of the portable telephone as described later. The liquid crystal display panel L is provided between the display unit cover 20 and the main body case 10. The liquid crystal display panel L
, The various information is displayed, and the information can be visually recognized through the display unit cover 20.

[0008] Engaging recesses 12 are provided at a plurality of locations on the inner peripheral surface of the mounting recess 11 of the main body case 10. On the other hand, on the outer peripheral side surface of the display unit cover 20, a plurality of engaged convex portions 22 that engage with the engaging concave portions 12 are provided. The display recessed cover 12 is fixed to the main body case 10 by engaging the engagement recessed portion 12 with the engaged projection 22 in the detaching direction X of the display cover 20.

A mounting groove 24 is formed on the back surface 23 of the display unit cover 20. The mounting groove 24 is provided in a frame shape surrounding the liquid crystal display panel L. Mounting groove 2
4 is provided with a rubber ring (O-ring) 30 made of an endless non-foamed body. By maintaining the engagement state between the engagement concave portion 12 and the engaged convex portion 22, the rubber ring 3
0 is pressed against the main body case 10 to seal.

As described above, the endless rubber ring 30
Is pressed against the main body case 10 to perform sealing, so that even if a gap is formed between the main body case 10 and the display unit cover 20, good sealing performance can be maintained. Also, unlike the case where an adhesive material or an adhesive tape is used, unnecessary portions are not generated by punching, so that the production cost can be significantly reduced. Further, compared to the case where a thin sponge rubber sheet is used, the rubber ring 30 is less deteriorated with time, so that the durability is improved.

Next, a second embodiment will be described.
As shown in FIGS. 2A and 2B, a mounting groove 24 is provided on the entire outer peripheral side surface of the display unit cover 20. A rubber ring 30 made of an endless non-foamed body is mounted in the mounting groove 24. Other configurations are
This is the same as the first embodiment, and the same or corresponding portions are denoted by the same reference characters, and detailed description and illustration thereof will be omitted.

By maintaining the engaged state of the engaging concave portion 12 and the engaged convex portion 22 shown in FIG. 2B, the rubber ring 30 is pressed against the inner periphery of the mounting concave portion 11 of the main body case 10 to seal. Is made.

Note that, as shown in FIG.
0 is formed in a frame shape, a first mounting groove 24a is provided on the entire periphery of the side surface of the display unit cover 20, and a frame-shaped second mounting groove 24b is provided on the back surface 23 of the display unit cover 20,
The first and second rubber rings 30a, 30b may be mounted in the first and second mounting grooves 24a, 24b, respectively.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art can easily envisage various changes and modifications within the obvious scope by referring to the present specification. Would. For example, the engaging recess may be provided over the entire circumference of the inner surface of the mounting recess, and the engaged protruding portion may be provided over the entire circumference of the side surface of the display unit cover. Further, a plurality of display portions may be provided in the portable telephone. Accordingly, such changes and modifications are to be construed as being within the scope of the invention as defined by the appended claims.

[0015]

As described above, according to the present invention,
Since sealing is performed by pressing the rubber ring against the main body case, good sealing performance can be maintained even if a gap is formed between the main body case and the display unit cover. Also, since no waste parts are generated in the processing process,
Manufacturing costs can be reduced. Furthermore, the durability of the seal is improved because a rubber ring that is hardly deteriorated with time is used.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a portable telephone according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the portable telephone according to the second embodiment.

FIG. 3 is a partial sectional view of a portable telephone according to another embodiment.

FIG. 4 is a partial sectional view of a conventional portable telephone.

[Explanation of symbols]

 10: body case 12: engagement recess 20: display cover 22: engaged projection 24: mounting groove 30: rubber ring L: liquid crystal display panel X: detaching direction

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4E360 BA03 BC04 EA18 EB05 ED12 GA29 GB26 GC08 GC12 5K011 AA01 AA14 JA01 5K016 AA01 BA06 CD01 DA01 EA04 EA07 HA01 HA06 5K023 AA07 BB04 BB25 HH07 LL06 QQ04

Claims (4)

[Claims] 1. A portable telephone having a liquid crystal display panel provided between a main body case and a display unit cover, wherein the main body case is provided with an engaging portion and is engaged with the display unit cover. A mating portion is provided, and the engaged portion is engaged with the engaging portion in the attaching / detaching direction of the display unit cover, so that the display unit cover is fixed to the main body case. A mounting groove is formed, an endless rubber ring is mounted in the mounting groove, and the rubber ring is pressed against the main body case or the liquid crystal display panel by maintaining the engagement state of the engaging portion and the engaged portion. The seal structure of a portable telephone that is sealed by the 2. The seal structure for a portable telephone according to claim 1, wherein the engaging portion comprises an engaging concave portion, and the engaged portion comprises an engaged convex portion. 3. The seal structure for a portable telephone according to claim 2, wherein the mounting groove is provided on a back surface of the display unit cover, and the rubber ring is pressed against a surface of the main body case or the liquid crystal display panel. 4. The portable telephone according to claim 2, wherein the mounting groove is provided on an outer peripheral side surface of the display unit cover, and the rubber ring is pressed against an inner peripheral surface of the mounting recess of the main body case. Container seal structure.