JPH08331674A - Waterproof remote control device - Google Patents

Abstract

PURPOSE: To sufficiently increase the sound pressure of a piezoelectric buzzer by mounting the vibrating body of the piezoelectric buzzer on the recessed part formed on the internal surface of a case and adhering the resonance box by the part of a rubber sheet forming an operation button to the vibrating body. CONSTITUTION: On the internal surface 2a of an upper case 2, a recessed part 24 is formed. On this recessed part 24, the vibrating body 21 of a piezoelectric buzzer is mounted. The vibrating body 21 is connected with a circuit board 12 by a lead 23. On a rubber sheet 5, an operation button 8 is formed by being projected and a cylindrical resonance box 25 is integrally formed at the location of a diaphragm. The resonance box 25 is provided with an air bleeder hole 26 at the bottom 25a, and when the rubber sheet is mounted, an opening end 25b is adhered to the vibration body 21 by allowing it to contact with the internal surface 2a of the case. Because the vibrating body 21 freely vibrates at the inside of the recessed part 24 and the resonance box 25 by energizing, generates vibrating sound and further resonates in the resonance box 25, the sound pressure of buzzer sound can be sufficiently increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote controller for remotely opening and closing a garage shutter, and more particularly to a structure for mounting a piezoelectric buzzer provided inside a case.

[0002]

2. Description of the Related Art Conventionally, this type of remote controller is as shown in FIGS. That is, the remote controller 1 is composed of a slender plastic upper case 2 which is divided into two parts at the top and bottom.
And a lower case 3. 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 a sheet body 6
A plurality of operation buttons 8 provided with a conductive rubber 7 are formed to protrude, and the operation buttons 8 are attached to the hole 4 so that they can be operated.

The lower case 3 accommodates a battery and the like, and has a circuit board 12 mounted thereon. The 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. Then, with the rubber sheet 5 placed on the circuit board 12, the upper case 2 and the lower case 3 are joined and screwed together, so that both cases 2, 3
Are watertightly sealed by a seal rubber or the like and integrally joined.

On the other hand, since this type of remote control 1 is often used outdoors, the piezoelectric buzzer 20 is provided inside the sealed cases 2 and 3, especially inside the upper case 2. In this piezoelectric buzzer 20, a vibrating body 21 is attached to the inner surface 2a of the case with a double-sided adhesive sheet 22 as shown in FIG.
Connected to. When the button is operated outdoors, it is possible to ring the piezoelectric buzzer 20 to check the presence or absence of the operation.

[0005]

However, in the mounting structure of the piezoelectric buzzer 20 described above, the vibrating body 21 is used.
Is attached to the inner surface 2a of the case with the double-sided adhesive sheet 22, the vibration of the vibrating body 21 is restricted by the sheet 22. Therefore, there is a problem that the sound pressure of the piezoelectric buzzer 20 is low and the buzzer sound is low.

An object of the present invention is to obtain a remote controller capable of sufficiently increasing the sound pressure of the piezoelectric buzzer provided inside the case.

[0007]

In order to achieve this object, the present invention is a remote controller in which a piezoelectric buzzer is mounted inside a hermetically sealed case, wherein a recess is formed on the inner surface of the case and the piezoelectric buzzer is formed in the recess. The vibrating body is attached to the vibrating body, and a cylindrical resonance box formed by a part of a rubber sheet forming an operation button is attached to the vibrating body.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of an embodiment of a remote controller according to the present invention. FIG. 2 is a perspective view of a main part. In the remote controller 1, a plurality of holes 4 are provided in the upper case 2 as an operating portion, a rubber sheet 5 and a piezoelectric buzzer 20 are attached to the inside of the case, and a lower case (not shown) is sealed in the upper case 2 as in the conventional case. Are combined together.

The rubber sheet 5 has a sheet body 6 on which a plurality of operation buttons 8 provided with a conductive rubber 7 are projected, and the operation buttons 8 can be operated out of the holes 4. Further, a groove 2b is formed around the hole 4 on the inner surface 2a of the upper case 2, and the projecting piece 6a of the seat body 6 is formed in the groove 2b in a state where the operation button 8 of the rubber sheet 5 is exposed from the hole 4. When fitted, the rubber sheet 5 is waterproofly fixed to the inner surface 2a of the case. The rubber sheet 5 is placed and held on the circuit board 12 when the case is joined.

On the inner surface 2a of the upper case 2, a concave portion 24 is formed at a predetermined position in front of the operation button 8, and the vibrating body 21 of the piezoelectric buzzer 20 is freely vibrated in the concave portion 24. The vibrating body 21 is connected to the circuit board 12 by the leads 23. Also the vibrating body 2
Since the rubber sheet 5 is arranged near 1, the sheet body 6 of the rubber sheet 5 is further extended to the front side of the vibrating body 21. Then, as shown in FIG. 2, a cylindrical resonance box 25 is integrally formed on the operation button 8 side at a position corresponding to the vibrating body 21 of the seat body 6.

The resonance box 25 is shallow according to the gap between the circuit board 12 and the inner surface 2a of the case, but is formed to have a large diameter substantially the same as that of the operation button 8, and an air vent hole 26 is provided in the bottom 25a. When the rubber sheet is attached, the resonance box 25 is attached to the vibrating body 21 by contacting the opening end 25b with the case inner surface 2a, and the bottom 25a is placed on the circuit board 12 by the case connection and held in the attached state.

Therefore, the remote controller 1 thus constructed
In this case, when the predetermined operation button 8 is operated, the vibrating body 21 of the piezoelectric buzzer 20 freely vibrates inside the recess 24 and the resonance box 25 by energization to generate a desired vibrating sound.
The vibration sound of the vibrating body 21 is further resonated in the resonance box 25, and the sound pressure becomes sufficiently high. Therefore, a large buzzer sound is transmitted to the outside of the cases 2 and 3 and sounds. Therefore, even when it is raining outdoors, it is possible to hear the buzzer sound and confirm the operation state.

[0013]

As is clear from the above description, according to the present invention, a rubber is formed on the inner surface of the case, the vibrating body of the piezoelectric buzzer is vibratably attached to the concave, and the operation button is formed. Since the cylindrical resonance box formed by a part of the sheet is attached to the vibrating body, the sound pressure of the buzzer sound by the vibrating body becomes sufficiently high, and a large buzzer sound can be produced. Therefore, it is effective when operating the remote control outdoors. Since the resonance box uses a rubber sheet, it has a small number of parts and is easy to install.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a main part.

FIG. 3 is an overall perspective view of an example of a remote controller to which the present invention is applied.

FIG. 4 is an exploded plan view showing a conventional piezoelectric buzzer attached state.

FIG. 5 is a sectional view of the same.

[Explanation of symbols]

 2 Upper case 2a Inner surface 3 Lower case 5 Rubber sheet 8 Operation button 20 Piezoelectric buzzer 21 Vibrating body 24 Recessed portion 25 Resonance box

Claims (1)

[Claims] 1. A remote controller in which a piezoelectric buzzer is mounted inside a hermetically sealed case, wherein a concave portion is formed on an inner surface of the case, and a vibrating body of the piezoelectric buzzer is vibratably attached to the concave portion to form an operation button. A remote control characterized in that a cylindrical resonance box made of a part of a rubber sheet is attached to the vibrating body.