JPH0650911Y2 - Pushbutton switch waterproof structure in waterproof housing - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention makes a hole provided on the outer surface of a waterproof casing face a push button switch of an electronic device housed in the casing and pushes it through the hole. The present invention relates to a push button switch waterproof structure in a waterproof housing for operating a button switch in a waterproof state.

[Conventional technology]

FIG. 5 is a side sectional view showing a conventional example of a push button switch waterproof structure of this type, and FIG. 6 is a front view thereof.

In the figure, 1 is a sealed waterproof casing, 2 is an electronic device fixedly housed in the waterproof casing 1, 3 is a push button switch for operating the electronic device 2, and 3a is a push button switch 3. The push buttons 4 are operation holes provided on the outer surface of the waterproof casing 1 facing the push button 3a.

Reference numeral 5 denotes a disk-shaped waterproof sheet made of a stretchable and contractible rubber or the like, which is attached to the waterproof housing 1 with an adhesive 6 to close the hole 4.

The gap between the waterproof sheet 5 and the push button 3a is set to be very small.

As shown in FIG. 7 showing the operation of the conventional example, when the waterproof sheet 5 is pressed from the outside of the waterproof casing 1 in the direction of arrow A by a person's finger or the like, the waterproof sheet 5 is expanded and contracted and deformed. The force of the finger is transmitted to the push button 3a so that it can be turned on and off.

In this way, the electronic device 2 can be used in the ocean.

[Problems to be solved by the device]

However, since the environment in the ocean is very bad, the conventional technique with the above-mentioned configuration has a problem that the adhesive strength between the waterproof casing and the waterproof sheet is severely deteriorated, and water leakage easily occurs.

Further, since the adhesive strength itself depends on the adhesive method, there is a problem that it takes time for workability and quality control in the assembling process, the adhesive process, and the cost of the device is increased.

In view of the above problems, the present invention provides a waterproof structure of a push button switch in a waterproof casing which has a mounting structure that is not affected by the environment in the ocean, is highly reliable in waterproofing, and leads to cost reduction of the device. The purpose is to provide.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a waterproof structure that does not rely on an adhesive and is mechanically incorporated.

That is, according to the present invention, a hole provided on the outer surface of the waterproof casing is made to face a push button switch of an electronic device housed in the casing, and the push button switch is operated in a waterproof state through the hole. In the waterproof structure of the push button switch in the housing, use a switch rod made of metal or plastic, etc., that has a brim at the tip to prevent it from coming off, have an inner diameter that fits the outer diameter of this switch rod, and open both ends. Incorporating a switch rod into a cylindrical flange made of metal, plastic, or the like, which has a taper-like flange whose diameter decreases toward the tip on the outer circumference of the tip and has a flange on the outer circumference of the outer end. The flange has an inside diameter that fits the outside diameter of this flange, and an outside diameter that is larger than the inside diameter of the hole on the outer surface of the waterproof casing.The tip is sealed and the outside end is open. In addition, a cap-shaped gasket made of an elastic member such as rubber having a brim on the outer periphery of its outer end is incorporated into the gasket, and the gasket is provided on the outer surface of the waterproof casing so that the tip faces the push button of the push button switch of the electronic device. It is characterized in that it is fitted to.

[Action]

With the above structure, according to the present invention, first, at the time of assembly, the switch rod is incorporated in the flange, the flange incorporating the switch rod is incorporated in the gasket, and the gasket is integrated so that the tip faces the push button of the electronic device. Insert it by inserting it into the hole of the waterproof case.

At this time, since the flange has the tapered flange, the flange can be easily inserted, and after the flange is inserted, the protrusion of the flange can prevent the flange from coming off.

Further, the switch rod can be prevented from coming off from the flange by the protrusion of the brim.

Further, the circular head portion of the gasket is pressed against the hole of the waterproof housing by the outer circumference of the cylindrical portion of the flange, so that the airtightness inside the waterproof housing can be maintained.

When the push button is operated, if the switch rod is pressed from the outside of the waterproof casing with a person's finger or the like, the tip of the gasket is deformed, and the force of the switch rod is transmitted to the push button to enable the on / off operation.

〔Example〕

 Embodiments will be described below with reference to the drawings.

1 is a side sectional view showing an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is an exploded side sectional view of the same embodiment.

In the figure, 7 is a sealed waterproof housing, 8 is an electronic device fixedly housed in the waterproof housing 7, 9 is a push button switch for operating the electronic device 8, and 9a is a push button switch 9. A push button, 10 is a circular hole for operation provided on the outer surface of the waterproof casing facing the push button 9a.

11 is a switch rod made of metal or plastic, etc., which has a spherical tip and has a collar 11a for preventing it from coming off.
Is a cylindrical flange made of metal, plastic, or the like having an inner diameter that fits with the outer diameter of the switch rod 11, and the flange 12 is open at both ends and has a diameter that gradually increases toward the outer periphery of the tip. It has a taper-like collar 12a that becomes smaller and has a collar 12b on the outer circumference of the outer end.

The reason why the tip of the switch rod 11 is made spherical is to reduce frictional resistance due to expansion and contraction of the gasket 13 described later, and to improve operability and durability.

Reference numeral 13 denotes a cap-shaped gasket made of an elastic member such as rubber having an inner diameter that fits with the outer diameter of the flange 12, and the gasket 13 has a sealed end and an open outer end, and It has a collar 13a on the outer periphery of the end.

In addition, the outer diameter of the outer peripheral portion 13b of the gasket 13 is equal to the waterproof casing 7
The gasket 13 has a size larger than the inner diameter of the round hole 10 and is dimensioned so that the gasket 13 is contracted in the diameter direction and fitted.

The operation of this embodiment having the above configuration will be described.

FIG. 4 is a side sectional view showing the operation of this embodiment.

First, at the time of assembly, as shown in FIG. 3, the switch rod 11 is incorporated in the flange 12, the flange 12 incorporating the switch rod 11 is incorporated in the gasket 13, and the gasket 13 is integrated.
Is inserted into the round hole 10 of the waterproof casing 7 so that its tip faces the push button 9a of the electronic device 8 and attached.

At this time, since the flange 12 has the tapered flange 12a, the insertion is easy, while after the insertion,
The protrusion of the collar 12a prevents the collar 12a from falling off.

In addition, the switch rod 11 has a flange 12 due to the protrusion of the collar 11a.
Cannot escape from outside.

Further, the cylindrical portion 13b of the gasket 13 is the cylindrical portion 1 of the flange 12.
By being pressed against the round hole 10 of the waterproof housing 7 by the outer circumference of 2c, the airtightness inside the waterproof housing 7 is maintained.

Next, when the push button 9a is operated, as shown in FIG. 4, the switch rod is pushed from outside the waterproof casing 7 with a person's finger or the like in the direction of arrow A.
When 11 is pressed, the tip of gasket 13 is deformed and push button
The force of the switch rod 11 is transmitted to 9a and it can be turned on and off.

[Effect of device]

As described in detail above, according to the present invention, a switch rod made of metal, plastic, or the like, having a brim at the tip to prevent it from coming off, has an inner diameter dimensioned to fit the outer diameter of the switch rod, Is opened, and has a tapered flange on the outer circumference of the tip, the diameter of which decreases as it goes to the tip, and has a brim on the outer circumference of the outer end. The built-in flange has an inner diameter that fits the outer diameter of the flange and an outer diameter that is larger than the inner diameter of the hole on the outer surface of the waterproof casing, and the end is sealed and the outer end is open. In addition, it is incorporated in a cap-shaped gasket made of an elastic member such as rubber having a brim on the outer periphery of its outer end, and the gasket is waterproof so that its tip faces the push button of the push button switch of the electronic device. Since a structure that fits into the hole in the external surface, it is possible to perform only the mechanical incorporation of attachment of the waterproof structure without resorting to the adhesive.

This makes it possible to realize a mounting structure that does not depend on the environment in the ocean, has excellent waterproof reliability, and leads to cost reduction of the device. .

[Brief description of drawings]

1 is a side sectional view showing an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is an exploded side sectional view of the same embodiment, and FIG. 4 is a side sectional view showing an operation of the same embodiment. 5 and 5 are side sectional views showing a conventional example, FIG. 6 is a front view thereof, and FIG. 7 is a side sectional view showing an operation of the conventional example. 7 ... Waterproof housing 8 ... Electronic equipment 9 ... Push button switch 9a ... Push button 10 ... Round hole 11 ... Switch rod 12 ... Flange 13 ... Gasket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Takayasu Ito 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. (56) References JP-A-53-29578 (JP, A) 55-117726 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A waterproof housing for allowing a hole provided on an outer surface of the waterproof housing to face a push button switch of an electronic device housed in the housing and operating the push button switch in a waterproof state through the hole. In the waterproof structure of the push button switch in, the switch rod made of metal or plastic, etc., which has a collar to prevent it from coming off, has an inside diameter that fits the outside diameter of this switch rod, and is open at both ends. Has a tapered flange whose diameter decreases toward the front, and has a flange on the outer periphery of the outer edge of the cylindrical flange made of metal or plastic. , Has an inner diameter that fits the outer diameter of this flange, and an outer diameter that is larger than the inner diameter of the hole on the outer surface of the waterproof housing, and has a sealed tip and an open outer end. It is incorporated in a cap-shaped gasket made of an elastic member such as rubber having a brim on the outer periphery of its outer end, and the gasket is attached to the hole on the outer surface of the waterproof casing so that the tip faces the push button of the push button switch of the electronic device. Push button switch waterproof structure in a waterproof case characterized by mating.