JPH0527931U - Switch mechanism for electrical equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a switch knob that does not move diagonally when pressed anywhere on the pressing part when the switch mounting position is located off the center line of the switch knob. To do. [Structure] The elastic recovery force of the elastic portion is made different by changing the wall thickness of one elastic portion of the switch knob or by providing a rib and a groove in the elastic portion.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 This invention relates to a switch mechanism for electric equipment. The electric equipment suitable for this invention includes video equipment, audio equipment, communication equipment, information equipment, and household equipment. Further, the electric device may be a component of a product in another field.

[0002]

[Prior Art]

 Conventionally, there is a switch knob shown in FIG. 2 for operating a tact switch provided in an electric device. The figure (a) is a ZZ line arrow sectional view, and the figure (b) is a top view.

That is, the switch knob (1) is integrally molded into the housing (3) by one elastic portion (2). When the tact switch (4) is on the center line (5) of the switch knob (1), the elastic portions (2) may have the same thickness and width.

By the way, recently, as shown in FIGS. 3 (a) and 3 (b), the tact switch (4) is attached to the center line of the switch knob (1) due to a layout of the board or a design problem. It must be installed at a position deviating from (5). Even in that case, the elastic portion (2) having the same thickness and width was used.

[0005]

[Problems to be solved by the device]

 However, when the above-mentioned conventional switch knob is used, the tactile sensation varies depending on the portion where the pressing portion of the switch knob is pressed (arrows A and B in FIG. 3A). For example, as shown in Fig. 3 (a), if you press the right side of the pressing part of the switch knob (arrow B), the elastic part is twisted and the switch knob moves diagonally (arrow B1), and the tact switch and switch There was a drawback that the knob did not come into contact well, the electric equipment body did not work, and the rate of defective switches increased.

Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide a switch mechanism in which the switch knob does not move in an oblique direction even when the mounting position of the tact switch is moved. is there.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is characterized in that the elastic recovery force of the elastic portion is made different in the width direction.

[0008]

【Example】

 Preferred embodiments of the present invention will be described below with reference to the drawings.

First, FIG. 1 is a view showing a switch knob to which a first embodiment of the present invention is applied. FIG. 1A is a sectional view taken along the line XX, and FIG. 1B is a plan view. Is.

That is, in the switch knob (7) for operating the tact switch (6), the pressing part (8) and the switch pressing part (9) are integrally molded in the housing (11) by the elastic parts (10a) and (10b). There is. The pressing portion (8) of the switch knob (7) projects from the opening (11a) formed in the housing (11), and the pressing portion is formed by using one elastic portion (10a) (10b) having elasticity. The switch pressing portion (9) provided on the back surface of (8) is configured to be turned on / off by contacting the tact switch (6).

By the way, recently, as shown in FIGS. 1 (a) and 1 (b), the tact switch (6) is moved to the center line (1) of the switch knob (7) due to a layout of the board or a design problem. Many of them are provided at positions outside of 2). In that case, it is necessary to make a difference in the elastic recovery force of the elastic portions (10a) and (10b) to correct the displacement of the moment when the tact switch (6) deviates from the center line (12) of the switch knob (7). Good.

For example, when the tact switch (6) is located on the left side of the center line (12) of the switch knob (7), the wall thickness of the elastic portion (10a) on the right side is increased, and the thickness gradually increases toward the left side. Try to reduce the wall thickness. On the contrary, if the tact switch (6) is located on the right side of the center line (12) of the switch knob (7), increase the wall thickness on the left side of the elastic part (10b) and gradually increase the meat as it approaches the right side. The thickness may be reduced. When the elastic portions (10a) and (10b) of the switch knob (7) described above are used, it is possible to reduce the tilt and twist of the switch knob when the end of the pressing portion (8) of the switch knob (7) is pushed. Becomes

The shape of the elastic portions (10a), (10b) of the switch knob (7) can be modified in various ways, and the following second and third embodiments of the present invention can be easily proposed. it can.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 (a) and 4 (b). That is, in the switch knob (14) for operating the tact switch (13), the pressing part (15) and the switch pressing part (16) are integrally molded in the housing (18) by the elastic parts (17a) and (17b). In the second embodiment, when the tact switch is on the left side of the center line (12) of the switch knob (14), the thickness and width of the elastic portion (17a) are not changed and the elastic portion (17a) is not changed. A rib (19) is provided on one side (from the right) in the longitudinal direction. On the other hand, when the tact switch (13) is located on the right side of the center line (12) of the switch knob (14), the thickness and width of the elastic part (17b) are not changed and the elastic part (17b) is not changed. The ribs (19) may be provided in the longitudinal direction in the direction (from the left).

By using the elastic portions (17a) (17b) of the switch knob (14) using the second embodiment described above, the elasticity can be easily changed and the switch knob (14) is also stable. .. Further, the diagonal movement of the switch knob (14) when the pressing portion (15) is pressed is further reduced.

Next, a third embodiment of the present invention will be described with reference to FIGS. 5 (a) and 5 (b). That is, in the switch knob (21) for operating the tact switch (20), the pressing part (22) and the switch pressing part (23) are integrally molded in the housing (25) by the elastic parts (24a) and (24b). In the third embodiment, when the tact switch (20) is located on the left side of the center line (12) of the switch knob (21), the elastic portions (24a) have the same thickness and width and different elasticity. In order to do so, the groove (26) is formed in the longitudinal direction on one side (from the left) of the elastic portion (24a). On the contrary, when the tact switch (20) is located on the right side of the center line (12) of the switch knob (21), the elasticity and elasticity of the elastic portion (24b) are made the same so that the elasticity is different. First, the groove (26) is formed in the longitudinal direction on one side (from the right) of the elastic portion (24b).

By using the switch knob (21) using the third embodiment described above, the elasticity of the elastic portions (24a) (24b) can be easily made different, and the switch knob (21) is also stable. As a result, there is less diagonal movement.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to these, and it is apparent that various modifications can be made without departing from the scope of the present invention. ..

For example, although the switch knob (7) is integrally molded with the housing (11) in FIG. 1, the switch knob (7) and the housing (11) may be applied separately. Of course, it is possible. The tact switch (6) may be replaced with a micro switch (not shown) or a sensor switch (not shown). Furthermore, an attempt is made to combine the device of the first or second embodiment and the device of the third embodiment.

[0020]

[Effect of the device]

 As described above in detail, according to the present invention, even if there is only one elastic portion, the tact switch can be used as a switch knob even if there is only one elastic portion by varying the elastic recovery force in the elastic portion of the switch knob that operates the tact switch. It is possible to reduce the tilt and twist of the switch knob even when it is off the center line.

[Brief description of drawings]

1A and 1B show a first embodiment of a switch knob according to the present invention, FIG. 1A is a sectional view taken along the line XX, and FIG. 1B is a plan view. ..

2 (a) and 2 (b) are views showing a state in which the center lines of a tact switch and a switch knob that are generally used are aligned, and FIG. 2 (a) is a cross-sectional view taken along the line ZZ. The same figure (b) is a plan view.

3 (a) and 3 (b) show a conventional switch knob, FIG. 3 (a) is a sectional view taken along the line YY, and FIG. 3 (b) is a plan view.

4A and 4B show a second embodiment of the switch knob according to the present invention, FIG. 4A is a sectional view taken along the line WW, and FIG. 4B is a plan view. ..

5A and 5B show a third embodiment of the switch knob according to the present invention, FIG. 5A is a sectional view taken along the line V-V, and FIG. 5B is a plan view. ..

[Explanation of symbols]

 (10a) (10b) Resilient part (first embodiment) (17a) (17b) Resilient part (second embodiment) (24a) (24b) Resilient part (third embodiment) (6) (13) (20) ) Tact switch (7) (14) (21) Switch knob (11) (18) (25) Enclosure

Claims (4)

[Scope of utility model registration request] 1. A switch mechanism for an electric device, comprising: a pressing part connected to a housing of an electric device via an elastic part; and a switch operated by the pressing part, wherein an elastic recovery force of the elastic part is applied in a width direction. Switch mechanism for electrical equipment, characterized in that 2. A switch mechanism for an electric device according to claim 1, wherein the elastic recovery force is varied in the width direction to change the thickness of the elastic portion in the width direction. 3. A switch mechanism for an electric device according to claim 1, wherein the elastic recovery force is varied in the width direction by providing a rib at one end in the width direction of the elastic portion. 4. The switch mechanism for an electric device according to claim 1, wherein the elastic recovery force is varied in the width direction by providing a groove at one end in the width direction of the elastic portion.