JPH0592932U - Keyboard switch support structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Simplify the structure to simplify the mold structure and facilitate assembly. [Structure] 2a is a sliding hole for slidably supporting a selection button 15 formed in the housing body 2. Reference numeral 16 is a rubber switch, which includes a thick support member 17, a thin hinge portion 18, and a contact portion 19.
Consists of. Then, the center of the lower surface of the flange portion 15b of the selection button 15 is brought into contact with the printed circuit board 22 and the selection button 15
A rod 15c for swingably supporting is provided in a protruding manner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support structure for a keyboard switch used in a communication device or a control device, and more particularly to a support structure for a keyboard switch that selectively operates a plurality of key switches with one push button.

[0002]

[Prior Art]

 Conventionally, as a support structure for this kind of keyboard switch, there is one shown in FIG. This will be described with reference to the drawings. Reference numeral 30 denotes a push button member, which is an elliptic push button main body 30a, a flange portion 30b formed on the lower surface of the push button main body 30a, and a protrusion formed from the center of both side edges of the flange portion 30b. And a pair of arm portions 30c, and the pair of arm portions 30c are swingably supported by two pairs of bearing hinges 32 and 33 formed to project from the lower case and the upper case so as to face each other, and the push button main body is supported. By selectively depressing the two operating parts A and B having different functions provided in 30a, the key switches arranged below the operating parts A and B are selectively operated.

[0003]

[Problems to be solved by the device]

 However, in the above-described conventional keyboard switch support structure, the bearing hinges are provided in the lower case and the upper case, so that the mold structure for molding the bearing hinges is complicated. Further, the bearing hinge must support the arm portion of the push button member, and the upper case must be incorporated in the lower case, so that the assembly work becomes complicated.

Therefore, the present invention has been made in view of the above-mentioned conventional drawbacks and problems, and an object of the present invention is to simplify the structure to simplify the mold structure, and It is to provide a support structure for a keyboard switch that is easy to assemble.

[0005]

[Means for Solving the Problems]

 In order to achieve this object, a keyboard switch support structure according to the present invention comprises a push button slidably supported in a sliding hole of a housing, and a push button disposed on the back surface of the push button and operated by pressing. And a printed circuit board having a key switch that operates when the contact portion comes into contact with the pressing operation of the push button, and a plurality of pressing operation portions are provided on the periphery of the push button. In addition, a supporting member that comes into contact with the printed circuit board is provided in the center of the back surface of the push button so as to swingably support the push button. A plurality of contact portions and a key switch are provided on the member and the printed board.

[0006]

[Action]

 According to the present invention, since the push button is swingably supported by the supporting member provided on the back surface of the push button, the structure of the push button is simplified.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a cordless answering machine that employs a keyboard switch support structure according to the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. Reference numeral 1 is a cordless answering machine as a child device of a button telephone device accommodating two outside lines, 2 is a main body housing of the cordless answering machine 1, 3 is a handset placed on the front side of the main body housing 2, Reference numeral 4 denotes a cassette housing portion for accommodating a microcassette for an answering machine, which is arranged below the handset 3, 5 denotes a speaker which is built in the main body housing 2 and which amplifies the contents recorded in the cassette, and 6 denotes an answering machine. Use the function buttons for to record and play messages on the cassette.

Reference numeral 7 is a dial button, 8 is a function button as a telephone such as a speed dial, 9 is a hold button, 10 is an outside line capture button for selectively capturing two outside lines, and 11 is a side surface portion of the main body housing 2. A wirelessly mounted antenna that can be freely rotated, 12 is a display unit that displays the dialed number of the call destination and the call time, and 15 is an answering machine line that selectively uses two external lines as an answering machine line. With the button, the center line C is used as a swing fulcrum and the part A is pressed to make the outside line 1 an answering line, and the part B is pressed to make the outside line 2 an answering line.

The feature of the present invention resides in the support structure of the selection button 15, which will be described in detail with reference to FIG. A sliding hole 2a is formed in the main body housing 2, and an annular guide wall 2b is formed so as to project downward at the lower portion of the peripheral surface of the sliding hole 2a. The selection button 15 is composed of a push button body 15a having a substantially elliptic cylindrical shape, a flange portion 15b formed on the lower surface of the push button body 15a, and a rod 15c protruding downward at the center of the bottom surface of the flange portion 15b.

Reference numeral 16 denotes a rubber switch made of an elastic member, which includes a pair of supporting portions 17a and 17b formed in a thick wall shape corresponding to the two operating portions A and B of the push button body 15a, and these supporting portions. 17a, 17b and thin-walled hinges 18a, 18b for connecting the respective seats 16a, 16b, and contact parts 19a, 19b fixed to the lower surfaces of the supporting parts 17a, 17b. A notch 20 is formed between the end faces 20a and 20b of the above so as to correspond to the rod 15c. Although not shown, the printed circuit board 22 is provided with key switches formed of pattern contacts corresponding to the contact portions 19a and 19b, and operates by contacting the contact portions 19a and 19b. It is like this.

In such a configuration, when the operating section A is pushed down as shown in FIG. 3A in order to use the outside line 1 as an answering machine, the rod 15c that comes into contact with the printed circuit board 22 is used as a swing center. Since the push button body 15a rotates counterclockwise and one hinge portion 18a elastically deforms, one contact portion 19a comes into contact with the pattern contact of the printed circuit board 22 so that the outside wire 1 serves as an answering machine. To operate. Similarly, in order to use the outside line 2 as an answering machine, when the operation portion B is pushed down, the push button body 15a rotates clockwise around the rod 15c as a swing center and the other hinge portion 18b elastically deforms. , The other contact portion 19b contacts the printed circuit board 22.

As shown in FIG. 1B, even if the central portion C of the operation portions A and B is accidentally depressed, the rod 15c is provided in the center of the flange portion 15b so that the push button is pushed. The main body 15a is prevented from swinging, and neither of the contact portions 19a and 19b come into contact with the printed circuit board 22, so that neither key switch malfunctions. Further, although the button 15 is used as the selection button in the present embodiment, when it is used as the single function button, for example, when the outside line is a one-line button telephone device and it is not necessary to select the outside lines 1 and 2, etc. Can be dealt with by cutting the rod 15c or exchanging the die of the mold for molding the selection button 15, so that it can be shared.

In the present embodiment, the two operation portions A and B are provided and the selection button 15 is used for switching between the two functions of the outside lines 1 and 2, but the selection button 15 is not limited to the two functions, and the push button body 15 a is not limited thereto. Of course, it is also possible to use three or more operation parts on the periphery of the device to switch between a plurality of types of functions.

[0014]

[Effect of the device]

 As described above, according to the present invention, a plurality of pressing operation parts are provided on the periphery of a slidable push button in a sliding hole of a casing, and a print having a key switch at the substantially center of the back surface of the push button. A plurality of contact portions are provided between the printed circuit board and an elastic member for projecting a supporting member that comes into contact with the board, swingably supporting the push button with the supporting member, and restoring the push button corresponding to the plurality of pressing operation portions. Since a plurality of key switches are provided, and a plurality of key switches are selectively operated by selectively operating a plurality of pressing operation parts, the structure of the push button is simplified, and therefore the mold structure is improved. The simplification can reduce the cost and the assembling becomes easy. In addition, since it can be easily applied to a single key switch, the versatility of this type of keyboard switch is enhanced, so that parts can be shared and the management cost of parts can be significantly reduced. It will be possible.

[Brief description of drawings]

FIG. 1 is a front view of a cordless answering machine that employs a keyboard switch support structure according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is an operation state diagram in FIG. 2. FIG.

FIG. 4 is a perspective view of a main part of a conventional keyboard switch support structure.

[Explanation of symbols]

 2a Sliding hole 15a Push button body 15c Rod 16 Rubber switch 22 Printed circuit board

Claims (1)

[Scope of utility model registration request] 1. A push button slidably supported in a sliding hole of a housing, an elastic member disposed on the back surface of the push button for restoring a push button pressed and a contact member, and an elastic member of the push button. It is composed of a printed circuit board having a key switch which is operated when a contact portion comes into contact with a pressing operation. A plurality of pressing operation portions are provided on the periphery of the push button, and the printed board is brought into contact with the back surface of the push button at substantially the center thereof. A support member is provided so that the push button is swingably supported by this support member,
A support structure for a keyboard switch, wherein a plurality of contact portions and a key switch are provided on the elastic member and the printed circuit board in correspondence with the plurality of pressing operation portions.