JPH09164602A - Waterproof case of electronic machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts and to eslly obtain high-degree waterproof function by covering a display part and the vicinity of a push button with a transparent cover member and closely bonding a soft colored cover material to a part other than a display place and closely bonding the member to be operated supported by the cover material to the surface of the pressing place of the push button. SOLUTION: The waterproof case of electronic machinery 20 is constituted by arranging a surface cover 21 having an opening part 21a formed thereto at the place corresponding to the pressing part 4a of a push button switch 4 to the surface of the electronic machinery and forming a cover material 23 on the surface of a part excepting the display place of the display device 3 of the surface case 21 in a closely bonded state and arranging a member 24 to be operated to the surface side of the pressing place of the push button switch 4 in the cover material 23 in closely bonded state. Herein, the surface case 21 is composed of a transparent plastic and the material 23 is composed of a colored plastic softer than the surface case 21 and the member 24 to be operated is composed of a colored soft plastic softer than the cover material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device provided with a display section, a push button for input, and the like, and more particularly to a waterproof case thereof.

[0002]

2. Description of the Related Art Electronic devices having a waterproof function and a dustproof function, which are provided with a display portion, a push button for inputting, etc., have been conventionally known. For example, a structure as shown in FIG. It is said that.

As shown in FIG. 3, the electronic device 1 has a built-in display 3 mounted on a printed circuit board 2 and a push button switch 4 for input. The electronic device 1 includes a front case 5 arranged on the front side and a back case 6 arranged on the back side.
And a packing 7 is provided around the front side case 5 and the back side case 6. Then, for example, in the boss portion 5a provided on the front case 5,
By inserting the screw 13 inserted from the back side case 6 side, the packing 7 is attached to the front side case 5 and the back side case 6.
It is designed to get a sealing function by closely adhering to.

Further, openings 5b and 5c are formed in the front case 5 at positions corresponding to the display 3 and the push button switch 4 for input, and these openings 5b and 5c are formed.
Packings 8 and 9 are also provided around c.
A transparent cover 1 for closing each opening 5b, 5c through 9
0 and an elastic cover 11 are provided. Then, the packings 8 and 9 are attached to the plurality of screw portions 5d projectingly provided on the front case 5.
By attaching and tightening the nut 12 with the transparent cover 10 and the elastic cover 11 penetrating, the packings 8 and 9 are pressed against the front case 5 and the transparent cover 10 and the elastic cover 11 to be in close contact, and the opening 5b, The sealing function in 5c is obtained.

[0005]

However, according to the above case structure, the openings 5b and 5c are
Packing 8, 9, transparent cover 10 or elastic cover 1
1. Since the mounting screw portion 5d, the nut 12 and the like are provided, the number of parts is increased and the number of assembling steps is also increased, resulting in an increase in manufacturing cost.

Moreover, since the packings 8 and 9 are pressed and sealed in the display section and the input section where water or the like tends to adhere, there is a problem that it is difficult to obtain a high waterproof function.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a waterproof case for an electronic device, in which the number of parts can be kept small and a high-level waterproof function can be easily obtained. is there.

[0008]

In order to solve the above-mentioned problems, the present invention provides a waterproof case of an electronic device in which a display section and a push button for input are built in, which covers at least the display section and the vicinity of the push button, A hard and transparent case body having an opening formed at a portion corresponding to the pressing portion of the push button, and a portion which is formed in close contact with the portion of the case body excluding the display portion display portion and is softer than the case body. It is elastic and has a chromatic color, and it is arranged in close contact with the surface side of the pressing portion of the push button in the cover material that is operated and has the same hardness as the cover material or softer than the cover material. And the operated member elastically supported by the cover material.

Here, the case body, the cover member and the operated member may be integrally molded. Further, in addition to the above configuration, the case body is a front case arranged on the front side of the electronic device, and the back case is arranged on the back side of the electronic device, and the back case, the cover member, and the operated member are Both are chromatic, and the cover material and the operated member are set to different hues.

Further, the back case is molded with a material harder than the cover material, and a portion of the front case facing the back case is covered with the cover material, and a cover material is formed on the mating surface of the back case with the cover material. It is formed with a protrusion that bites into and secures the sealing property.

In the above structure, a portion of the waterproof case that covers at least the display section and the vicinity of the push button is a case body,
Since the case body is composed of the cover material formed in close contact with the portion other than the display portion and the operated member arranged in close contact with the cover material, the waterproof function can be obtained with a small number of parts. be able to. Further, since the display section is covered only by the transparent case body, the visibility of the display section is also kept good. Further, since the operated member is elastically supported by the cover member, the operability of the operated member can be maintained well.

Further, by integrally molding the case body, the cover member and the operated member, it is possible to obtain a sufficient sealing property even in the place where the display portion and the input push button are provided.

Further, the case body is composed of a front case arranged on the front side of the electronic device, the back case is arranged on the back side of the electronic device, and the back case, the cover member and the operated member are all provided. By coloring, it is possible to prevent parts other than the display part from being seen from the outside, and by setting the cover material and the operated member to different hues, the operated member can be easily identified and operated. You can easily see the location.

Further, by molding the back case with a material harder than the cover material, it is possible to obtain sufficient rigidity in the front case and the back case, and at the mating surface of the back case with the cover material. It is possible to secure sufficient sealing property by forming the protrusion that bites into the cover material.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In addition, the same reference numerals are given to those having the same functions as those of the conventional waterproof case, and the description thereof will be omitted.

The waterproof case of the electronic device 20 is arranged on the front side of the electronic device 20, and the pressing portion 4a of the push button switch 4 is provided.
The front side case 21 having an opening 21a formed at a position corresponding to, the back side case 22 disposed on the back side of the electronic device 20, and the surface of the part of the front side case 21 excluding the display position of the indicator 3 are closely attached. The cover member 23 formed in this manner and the operated member 24 arranged in close contact with the front surface side of the pressing portion of the push button switch 4 on the cover member 23.

Here, the front case 21 is made of a hard plastic and is made of a transparent material, and the back case 22 is made of a hard plastic and has a chromatic color. The cover material 23 is the front case 21.
It is made of soft plastic which is softer than the back case 22 and has elasticity and has a chromatic color. Further, the operated member 24 is made of a soft plastic which is softer than the cover material 23 and has a chromatic color. The cover material 23 and the operated member 24 are formed of materials having different hues.

A portion of the front case 21 facing the back case 22 is covered with a cover member 23.
As shown in FIG. 2, a projection 22a having a wedge-shaped cross section is formed on the mating surface of the back case 22 with the cover material 23. Then, by screwing the screw 13 inserted from the back case 22 side into the boss portion 21b of the front case 21, the protrusion 22a of the back case 22 bites into the cover member 23, as shown by a phantom line in FIG. It is designed to come into close contact.

The front case 21, the cover member 23 and the operated member 24 are integrally manufactured as follows. First,
The front case 21 is molded by injecting transparent hard plastic into the first mold for molding only the front case 21. Next, the front case 21 is replaced with the front case 21.
Is placed in the second formwork provided with the placement position of and the injection place of the cover material 23, and after that, the soft plastic is poured into the second formwork. As a result, the cover material 23 is double-molded and integrated in a state of being in close contact with the front surface side of the front case 21. Further, the front case 21 and the cover material 23 thus integrated are arranged in the third formwork provided with the arrangement positions of the front case 21 and the cover material 23 and the injection portion of the operated member 24. After this, soft plastic is poured into the third formwork. As a result, the operated member 24 is molded in a state of being in close contact with the front surface side of the cover member 23, and the front case 21, the cover member 23, and the operated member 24 are integrally manufactured.

In the above structure, since the front side portion of the waterproof case is composed of the front case 21, the cover member 23 and the operated member 24, the waterproof function can be obtained with a small number of parts and the number of assembling steps can be minimized. Since it is suppressed, the manufacturing cost can be reduced.

Further, since the display unit 3 is covered only by the transparent front case 21, the visibility of the display unit 3 can be kept good. Further, since the operated member 24 is elastically supported by the cover member 23, the operability of the operated member 24 is also kept excellent. In particular, since the operated member 24 is formed of a material that is softer than the cover member 23, the feeling when touched by the finger at the time of input is good, and the stress from the finger at the time of input is dispersed by the operated member 24. The effect of reducing fatigue in the cover material 23 is also obtained. Even if the operated member 24 is formed of a material having the same hardness as the cover material 23, such an effect can be obtained.

Further, since the front case 21, the cover member 23, and the operated member 24 are integrally formed, a perfect sealing property can be obtained at the front portion of the waterproof case, and the front case 21 and the back side can be obtained. By molding the case 22 with a material that is harder than the cover material 23, it is possible to obtain sufficient rigidity in the front case 21 and the back case 22, and at the mating surface of the back case 22 with the cover material 23. Protrusion 2 that cuts into the cover material 23
By forming 2a, sufficient sealing performance can be secured.

Further, by making the cover material 23 and the operated member 24 covering the transparent front case 21 and the back case 22 all chromatic, the parts other than the display part of the display 3 can be seen from the outside. By setting the cover material 23 and the operated member 24 in different hues, the operated member 24 can be easily identified and the operated portion can be easily visually recognized.

Although not shown, the printed circuit board 2
Is preferably attached to the boss portion formed on the front case 21 with a screw or the like as in the prior art, but is not limited to this. In addition, as described above, when the protrusion 22a formed on the mating surface of the back case 22 with the cover material 23 has a wedge-shaped cross section, the protrusion 22a digs into the cover material 23a well and high sealing performance is obtained. It goes without saying that it is not limited.

[0025]

As described above, according to the present invention, a waterproof case of an electronic device having a built-in display section and a push button for input is provided to cover at least the display section and the vicinity of the push button, and to be a push section of the push button. A hard and transparent case body having an opening formed at a corresponding portion, and a portion formed in close contact with a portion of the case body excluding the display portion display portion, which is softer and elastic than the case body, A cover material that is chromatic and is placed in close contact with the surface side of the pressed portion of the push button in the cover material that is operated, and is the same hardness as the cover material or softer than the cover material. By having the operated member that is elastically supported, the waterproof function can be obtained with a small number of parts, the number of assembly steps can be minimized, and the manufacturing cost can be reduced. You can
Also, since the display section is covered only by the transparent case body, the visibility of the display section is kept good, and since the operated member is elastically supported by the cover material, the operability of the operated member is improved. Is well retained. Furthermore, by molding the operated member with the same hardness as the cover material or a material softer than the cover material, the touch feeling when touching with a finger at the time of input is improved and the stress from the finger during input is reduced. The effect that the fatigue is reduced in the cover material by being dispersed by the operated member is also obtained.

Further, by integrally molding the case body, the cover material, and the operated member, it is possible to obtain a perfect sealing property at the portion covered with these. In addition, the case body is composed of a front side case arranged on the front side of the electronic device,
A back case is disposed on the back side of the electronic device, and the back case, the cover material, and the operated member are all chromatic colors, and the cover material and the operated member are set to different hues, thereby making the electronic device waterproof case. The total number of parts is small, the number of assembly steps can be minimized, the manufacturing cost can be reduced, and the operated member can be easily operated by setting different colors for the cover material and the operated member. Can be easily identified and the operating location can be easily visually confirmed, improving operability.

Further, the back case is molded with a material harder than the cover material, and a portion of the front case facing the back case is covered with the cover material, and a cover material is formed on the mating surface of the back case with the cover material. By forming the protrusion that bites into and secures the sealing performance, good sealing performance can be obtained even at the joint between the front case and the back case.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a waterproof case of an electronic device according to an embodiment of the present invention.

FIG. 2 is an enlarged side sectional view of a main part of the waterproof case.

FIG. 3 is a side sectional view of a conventional waterproof case of an electronic device.

[Explanation of symbols]

 2 printed circuit board 3 indicator 4 push button switch 4a pressing portion 13 screw 20 electronic device 21 front side case (case body) 21a opening 22 back side case 22a protrusion 23 cover material 24 operated member

Claims (4)

[Claims] 1. A waterproof case for an electronic device having a display section and a push button for input built therein, which covers at least the display section and the vicinity of the push button, and has an opening at a location corresponding to the push section of the push button. A hard and transparent case body formed, and formed in close contact with a portion of the case body excluding the display portion display portion, which is softer and more elastic than the case body, and a chromatic cover material, A cover member that is disposed in close contact with the surface side of the pressing portion of the push button in the cover material that is the operated portion and has the same hardness as the cover material or is softer than the cover material and elastically supported by the cover material. A waterproof case for an electronic device including an operation member. 2. The waterproof case for an electronic device according to claim 1, wherein the case body, the cover member and the operated member are integrally formed. 3. The case body is a front side case disposed on the front side of the electronic device, the back side case is disposed on the back side of the electronic device, and the back side case, the cover member, and the operated member are all provided. The waterproof case for an electronic device according to claim 1, wherein the waterproof case is chromatic, and the cover material and the operated member have different hues. 4. The back case is formed of a material harder than the cover material, and a portion of the front case facing the back case is covered with the cover material, and a cover material is provided on a mating surface of the back case with the cover material. The waterproof case for an electronic device according to claim 1, further comprising: a protrusion that penetrates into the groove to secure a sealing property.