JPH1022659A - Conductive waterproof gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a waterproof effect between a main body of a case and a door and also obtain a grounding effect of the door by means of a conductive gasket which is used for sealing the main body of a case and the door and grounding the door. SOLUTION: A half of a face of a conductive tape 2 where a conductive pressure sensitive adhesive 3 is attached is pasted on a face 3 A of a waterproof sealing material 4 that is to be brought into contact with a door. The other half of the face of the tape 2 is pasted on a main body of a case. A gasket 1 of such a structure is pasted on the main body 6 of a case and then the door is closed. When pasting the gasket 1 on the main body 6 of a case, care must be taken to insure that the waterproof sealing material 4 is located outside than the conductive tape 2. By using this gasket 1, each of the main body of a case and the door has a face with which the waterproof sealing material 4 is brought into contact and a face with which the conductive tape 2 is brought into contact. Therefore, water is prevented from entering the case from outside and the door can be grounded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a conductive gasket.

[0002]

2. Description of the Related Art Conventionally, in a device incorporating an electronic device which emits high-frequency radiation noise, a grounded metal casing is used so that high-frequency radiation noise does not radiate to the outside of the device and interfere with radio frequencies. A method of shielding high-frequency radiation noise by incorporating the electronic device in a body or the like and sealing the electronic device with a metal door or lid or the like has been adopted. However, in such a shielding method, since there is a gap between the door and the housing body, radiation noise leaks from the housing to the outside. Also, if the metal door is in a state of floating potential from the ground point, or if the connection point is incompletely connected,
There is a problem that the antenna radiates radiated noise to the outside of the housing, which interferes with a radio frequency. Therefore, conventionally, a gap between the housing and the door is sealed by using a conductive gasket, the door is grounded, and radiation noise is shielded.

FIG. 3 shows an example of the configuration of a general conductive gasket. In FIG. 3, the conductive gasket 8 has a structure in which nylon (conductive material) 10 of silver coating is coated on the outer periphery of a sponge 9 of independent foam, and a double-sided adhesive tape 5 is attached.

Next, a method of using the conductive gasket 8 is shown in FIG.
This will be described with reference to FIG. FIG. 4 shows an example in which the conductive gasket 8 of FIG. 3 is used in a box-shaped storage case, and FIG. 5 shows the conductive gasket 8 of FIG. , Etc.). As shown in FIG. 4, when the conductive gasket 8 is attached to the housing body 6 incorporating the electronic device and the door 7 is pressed and closed, the housing body 6 and the gasket 8 come into surface contact with each other at the portion 8A in FIG. , 8B, the door 7 and the gasket 8 are in surface contact.
Therefore, the door 7 is grounded via the housing body 6 and shields radiated noise by the shield effect.

[0005]

The above-mentioned conductive gasket has a sealing effect and a shielding effect between the housing body and the door, but does not have a waterproof effect on the conductive material used for coating the conductive gasket. , The conductive gasket 8 of the portion 8B in FIG.
Water enters the inside of the housing from the surface where the door 7 is in contact with the door 7, which is a problem in an environment requiring waterproofness.

In order to solve the above problem, as shown in FIG. 6, a waterproof sealing material 4 with a double-sided adhesive tape 5 is provided on the outer periphery of a portion where a conductive gasket 8 is attached to a housing body 6. By sticking and closing the door 7 by pressing it, there is a method in which water is prevented from entering from the outside of the housing with the waterproof sealing material 4 and radiation of radiated noise from inside the housing is blocked by the conductive gasket 8. However, there is a problem that a space for attaching the conductive gasket 8 and the waterproof sealing material 4 is required, and the cost is high. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a conductive waterproof gasket that can easily perform waterproofing and grounding processing at a low cost. .

[0007]

SUMMARY OF THE INVENTION The present invention relates to a conductive gasket used for sealing and grounding between metal housings, and an object of the present invention is to provide a conductive gasket having a conductive adhesive on one surface. The conductive tape is composed of a conductive tape and a waterproof sealing material having an adhesive on one surface, and a half of an adhesive surface of the conductive tape is adhered to a part of a sealing surface of the waterproof sealing material. The other half of the adhesive surface is formed so as to be adhered to the conductive surface of the housing together with the adhesive surface of the waterproof sealing material.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof gasket to which a conductive tape according to the present invention is attached has both conductivity and waterproofness.
Both the waterproof effect and the shielding effect between the housing and the door are enabled. Therefore, it is not necessary to use both the conductive gasket and the waterproof gasket as in the related art, and waterproofing and grounding between the housing and the door can be easily performed.

FIG. 1 is a view for explaining an example of the configuration of a conductive waterproof gasket of the present invention and a method of using the same. FIG. 2 is a view showing an example of a method of using the conductive waterproof gasket of the present invention in correspondence with FIGS. 5 and 6.

Referring to FIG. 1, an example of the configuration of the conductive waterproof gasket of the present invention will be described. The conductive waterproof gasket 1 of the present invention comprises a waterproof sealing material 4 with a double-sided adhesive tape 5.
And a conductive tape 2 in which a conductive material is provided with a conductive adhesive 3. A half surface of the conductive tape 2 is opposite to a surface 3 A of the waterproof sealing material 4 to which the double-sided adhesive tape 5 is attached. The remaining half surface of the conductive tape 2 is attached to the conductive surface 6A of the housing body 6 together with the surface of the waterproof sealing material 4 to which the double-sided adhesive tape 5 is attached. . As shown in the example of FIG. 1, the double-sided adhesive tape 5 only needs to be attached to a part of the surface of the waterproof sealing material 4, and the double-sided adhesive tape 5 is naturally attached to the conductive surface 6A. No need to attach.

Next, an embodiment of a method of using the conductive waterproof gasket of the present invention will be described with reference to FIG. First, the conductive waterproof gasket 1 is adhered to the housing body 6 and the metal door 7 is pressed to close, so that one surface 4A of the waterproof sealing material 4 is in close contact with the housing body 6 side, and the waterproof property is improved. The other surface 4B of the sealing material comes into close contact with the door 7 side to exhibit waterproofness between them, and furthermore, the surface of the conductive tape on the door side of the conductive tape adhered to the housing body 6 with the conductive adhesive 3. 2A is door 7
, The door 7 is grounded via the housing main body 6, and a shielding effect can be exhibited.

[0012]

As described above, according to the conductive waterproof gasket of the present invention, at a lower cost, compared with the conventional method using both the conductive gasket and the waterproof gasket.
Waterproofing and grounding can be easily performed.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an example of the configuration of a conductive waterproof gasket of the present invention and a method of using the same.

FIG. 2 is a view showing an example of a method of using the conductive waterproof gasket of the present invention, corresponding to FIGS. 5 and 6.

FIG. 3 is a perspective view showing an example of a configuration of a general conductive gasket.

4 is a diagram showing an example in which the conductive gasket of FIG. 3 is used for a box-shaped storage case.

FIG. 5 is a diagram showing a cross-sectional configuration of a contact portion between a general conductive gasket, a housing body, and a door.

FIG. 6 is a view showing an example of a method in which a general conductive gasket and a waterproof sealing material are used together.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Conductive waterproof gasket 2 Conductive tape 2A Surface where conductive tape 2 and door 7 contact 3 Conductive adhesive 3A Surface where conductive tape 2 and waterproof sealing material 4 adhere 4 Waterproof sealing material 4A Waterproof Surface 4A where sealing material 4 and housing body 6 are in close contact 4B Surface where waterproof sealing material 4 and door 7 are in close contact 5 Double-sided adhesive tape 6 Housing body 6A Conductive surface 7 Door or lid 8 Conductive gasket 8A Housing The surface where the main body 5 and the conductive gasket 1 are in contact. 8B The surface where the door 6 and the conductive gasket 1 are in contact. 9 Closed-cell foam sponge.

Claims (1)

[Claims] 1. A conductive gasket used for sealing and grounding between metal casings, comprising a conductive tape having a conductive adhesive on one side and a waterproof sealing material having an adhesive on one side. A half of the adhesive surface of the conductive tape is adhered to a part of the sealing surface of the waterproof sealing material, and the other half of the adhesive surface of the conductive tape is together with the adhesive surface of the waterproof sealing material. A conductive waterproof gasket, which is formed so as to be adhered to a conductive surface of a housing.