JPH08331673A - Waterproof remote control device - Google Patents

Abstract

PURPOSE: To uniformly obtain high seal performance by seal gum all around the periphery of a case joint surface by forming calycine the inside of the seal gum of the plastic case joint surface in a waterproof remote control device. CONSTITUTION: In a long and narrow plastic case which is divided into two, seal gum 20 is inserted into the groove 15 formed all around the periphery of the joint surface of an upper case 2 and a projection 16 which is narrower than the groove 15 in width is provided all around the periphery of the joint surface of a lower case 3. The seal gum 20 is provided with a thin tablet 20b at the inside of a projecting part, 20a and is formed into a wide ring-shape. The projecting part 20a is force-fitted into the groove 15 by the projection 16, and calycine 20b is narrowed by the side surface 15c of the groove 15 and the side surface 16a of the projection 16, adheres to the surfaces and pressurizes and contacts with the surfaces. As a result, the repulsion according to a gum compression is relieved to the side direction and high seal performance can be uniformly obtained all around the peripheries of the joint surfaces of the cases 2 and 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof remote controller for remotely opening and closing a garage shutter, for example, and more particularly to a seal structure of a long and slender plastic case divided into two parts.

[0002]

2. Description of the Related Art Conventionally, a waterproof remote controller of this type is shown in FIG.
And it looks like Figure 7. That is, the remote controller 1 includes an elongated plastic upper case 2 and a lower case 3 which are vertically divided into two parts. The upper case 2 is provided with a plurality of holes 4 as an operating portion, and a rubber sheet 5 is attached inside the case. The rubber sheet 5 is formed by projecting a plurality of operation buttons 8 provided with a conductive rubber 7 on a sheet main body 6, and the operation buttons 8 are attached to the outside so that they can be operated. The lower case 3 is provided with a case 10 for accommodating a battery on the bottom, and the circuit board 12 is installed on the case 10. A circuit board 12 is formed with a large number of components to form a circuit, and in particular, a switch 13 is formed at a position corresponding to the conductive rubber 7 to send a signal corresponding to a button operation.

Further, as a waterproof structure of the case joint portion, the upper case 2 has a groove 15 formed all around the joint surface 2a.
A ring-shaped seal rubber 17 is inserted into the groove 15.
Further, the lower case 3 is provided with a projection 16 narrower than the groove 15 on the entire circumference of the joint surface 3a so as to press the seal rubber 17 of the groove 15.

In this case, the seal rubber 17 is as shown in FIG.
As described above, the width B is slightly narrower than the width A of the groove 15, so that the seal rubber 17 can be easily inserted into the groove 15.

Therefore, when the seal rubber 17 is inserted into the groove 15 of the upper case 2 and the lower case 3 is overlaid, the circuit board 1
The rubber sheet 5 is placed on the surface of the case 2, and the projections 16 are inserted into the groove 15 so that they are joined together. In this state, the screws 9 are tightened at three positions on both ends in the longitudinal direction of the case. Seal and join together. Bonding surface 2 at this time
The protrusion 16 is pressed against the seal rubber 17 of the groove 15 over the entire circumferences of a and 3a, and is sealed so as to prevent rainwater and the like from entering the inside of the cases 2 and 3.

[0006]

However, in the above-described case seal structure, the width B of the seal rubber 17 is formed to be slightly smaller than the width A of the groove 15, so that the following problems occur. That is, the seal rubber 17 inserted in the groove 15 is shown in FIG.
As described above, the groove 15 mainly contacts the bottom surface 15a. Therefore, the seal rubber 17 is compressed by pressing the projection 16,
The end face 16a of the protrusion 16 and the bottom face 15a of the groove 15 are pressed into contact with each other.
The lower case 3 is pushed down to lift the upper case 2 on the bottom surface 15a of the groove 15. Therefore, the plastic cases 2 and 3 have a problem in that the central portions apart from the screwed portions at both ends are bent up and down by the repulsive force of the seal rubber 17 to lower the sealing performance.

An object of the present invention is to obtain a waterproof remote controller in which high sealing performance is uniformly obtained by the seal rubber on the entire circumference of the case joint surface.

[0008]

To achieve this object, according to the present invention, a groove into which a seal rubber is inserted is formed on the entire circumference of one joint surface of an elongated plastic case which is divided into two, and the other is formed. A protrusion narrower than the groove is formed on the entire circumference of the joint surface so as to press the seal rubber of the groove, and when both cases are screwed at both ends in the longitudinal direction, the seal rubber seals the entire circumference of the joint surface. In the waterproof remote controller to be joined together, a collar is formed inside the seal rubber.

Further, according to the present invention, one of the plastic cases has a hole for operating an operation button formed of a rubber sheet, and a protrusion formed on the rubber sheet around the hole. The button groove portion is provided, and the width of the protrusion inserted into the button groove portion is slightly wider than the width of the button groove portion.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a main part of an embodiment of the preventive remote controller according to the present invention. The remote controller 1 is provided with an elongated plastic upper case 2 and a lower case 3 which are divided into two as in the conventional case, and a rubber sheet 5 is provided inside a hole 4 of the upper case 2 and an operation button 8 provided with a conductive rubber 7.
Is attached so as to project from the hole 4 to the outside so that buttons can be operated. Further, a groove 2b is formed around the hole 4 inside the upper case 2, and the protruding piece 6a of the rubber sheet 5 is engaged with the groove 2b to be waterproofly fixed.

The lower case 3 has a battery case 10 inside.
And the circuit board 12 is placed on the support 11 of the case 10. Then, with the rubber sheet 5 placed on the circuit board 12, the two cases 2 and 3 are joined and screwed at three positions at both ends in the longitudinal direction of the case to hermetically and integrally join.

Further, as a waterproof structure, a groove 15 is formed on the entire circumference of the joint surface 2a of the upper case 2, and a seal rubber 20 having a shape different from the conventional shape is inserted into the groove 15, and the entire circumference of the joint surface 3a of the lower case 3 is inserted. A protrusion 16 narrower than the groove 15
Is provided. The seal rubber 20 is formed in a wide ring shape by providing a thin collar 20b inside the convex portion 20a as shown in FIG. Further, the convex portion 20a has a groove 15 as shown in FIG.
The width is formed to be the same as or slightly wider than the width of the lower case 3, and the thickness is almost the same as the gap when the protrusion 16 of the lower case 3 is inserted into the groove 15, and the convex portion 20a is formed in the groove 15 It is inserted in contact with both side surfaces 15b, 15c of the.

Therefore, the remote controller 1 constructed in this way
In this case, the seal rubber 20 is placed on the entire circumference of the joint surface 2a of the upper case 2, the groove 15 and the convex portion 20a are fitted together, and the protrusion 16 of the lower case 3 is placed on the seal rubber 20. 3 is polymerized. In this state, when the two cases 2 and 3 are integrally joined by screwing at both ends in the longitudinal direction of the case, the seal rubber 20 has the joint surfaces 2a and 3 of the two cases 2 and 3
and the convex portion 20a is sandwiched between
Inserted in 5.

Then, the convex portion 20a of the seal rubber 20 is pressed into the groove 15 by the projection 16 as shown in FIG. Therefore, in the convex portion 20a, the protrusion 16 is inserted into the center of the groove 15, and the flange 20b is sandwiched between the side surface 15c of the groove 15 and the side surface 16a of the protrusion 16 so as to come into close contact with each other and come into pressure contact. As a result, the entire circumferences of both cases 2 and 3 are sealed so as to prevent rainwater and the like from entering.

Further, the protrusion 20a of the seal rubber 20 has the protrusion 16 at the center thereof, but since it is hardly compressed, the repulsive force due to the compression of the protrusion 20a does not act on the protrusion 16 much. The collar 20b is pressed against the side surface 15c of the groove 15 and the collar 16a while being compressed, so that the repulsive force due to this compression escapes to both sides. Therefore, the joint surfaces 2a, 3a of the two plastic cases 2, 3 are prevented from being bent by the repulsive force of the seal rubber 20, and a high sealing performance is uniformly obtained over the entire circumference.

FIG. 5 is a sectional view of a main portion showing another embodiment of the present invention. In this embodiment, the protruding piece 6a provided around the operation button 8 of the rubber sheet 5 is formed to have a width slightly wider than the groove 2b provided around the hole 4 of the upper case 2 and has a thickness of The depth of the groove 2b is substantially the same as that of the groove 2b. When the protrusion 6a is engaged with the groove 2b, the protrusion 6a
Are compressed on both sides of the groove 2b. Therefore, the plastic cases 2 and 3 are prevented from being bent by the repulsive force of the rubber sheet 5, and the shield performance is improved.

It is needless to say that the groove and the protrusion for the upper case and the lower case may be applied in the opposite relationship.

[0018]

As is apparent from the above description, according to the present invention, since the collar is formed inside the seal rubber on the joint surface of the two elongated plastic cases, the repulsive force caused by the rubber compression is reduced. It escapes to the side, and high sealing performance is uniformly obtained by the seal rubber on the entire circumference of the case joint surface.

Also, when the width of the protrusion of the rubber sheet is made slightly wider than the width of the groove of the case, the sealing performance is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a waterproof remote controller according to the present invention.

FIG. 2 is a plan view of a seal rubber.

FIG. 3 is a cross-sectional view showing the relationship between the groove and the seal rubber.

FIG. 4 is a cross-sectional view showing a sealing state of sealing rubber.

FIG. 5 is a sectional view of an essential part of another embodiment of the present invention.

FIG. 6 is an overall perspective view showing an example of a conventional waterproof remote controller.

FIG. 7 is an exploded plan view of the same.

FIG. 8 is a cross-sectional view showing a width of a seal rubber and a sealing state.

[Explanation of symbols]

 2 Upper case 3 Lower case 2a, 3a Joint surface 15 Groove 16 Protrusion 20 Seal rubber

Claims (2)

[Claims] 1. A groove into which a seal rubber is inserted is formed on the entire circumference of one joint surface of an elongated plastic case divided into two, and a projection having a width narrower than the groove is formed on the entire circumference of the other joint surface. In a waterproof remote controller that is formed to press the seal rubber of, and is sealed and joined by the seal rubber on the entire circumference of the joint surface when both cases are screwed at both ends in the longitudinal direction, A remote control that is characterized by forming a. 2. One of the plastic cases,
The rubber sheet is provided with a hole for operating the operation button, and a button groove portion around the hole into which the projecting piece formed on the rubber sheet is inserted, and the button groove portion is inserted into the button groove portion. The width of the protruding piece is formed to be slightly wider than the width of the button groove portion.
The described remote control.