JP3127702B2 - Operation button device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary mechanism operation button device for operating a mechanism of a cassette tape recorder.

[0002]

2. Description of the Related Art In recent years, the mechanism of a cassette tape recorder has considerably shifted to an electrically operated mechanism. On the other hand, in very inexpensive products, mechanically operated mechanisms are still frequently used due to cost advantages. Furthermore, the operation button device in the latter mechanical mechanism is a mechanism that moves in the same direction as the operation direction of the operation rod of the mechanism, and a rotation type button,
Some of them move differently from the operation direction of the operation rod of the mechanism. For example, when the mechanism is arranged such that the operation rod protrudes above the product, the operation direction of the operation rod and the operation button can be set in the same direction, and thus the operation button is often directly attached to the operation rod. However, when the mechanism is arranged such that the operation rod protrudes downward, the operation direction of the operation rod and the operation button cannot be set in the same direction, and therefore, a rotary operation button is frequently used.

An example of the above-mentioned conventional rotary operation button device will be described below with reference to the drawings.

FIGS. 4 to 6 show the configuration, operation state, and abnormal recovery state of the operation button device of the conventional example, respectively. In each of the drawings, a kick-up lever 12 as an operation member is provided on the opposite side of the operation portion 11a of the rotation-type operation button 11 rotatably mounted around a rotation shaft 14 provided on a housing 15. The operating button 11 is provided with a forming spring 13 integrally formed of the same material as the operating button 11 or to which another material is fixed, and an L-shaped tip of an operating rod 17 extended from the mechanism 16 is provided. Is inserted between the kick-up lever 12 and the forming spring 13.

[0005] The operation and operation of each part of the conventional operation button device configured as described above will be described below.
First, as shown in FIG. 5, when the operation portion 11a of the operation button 11 is pressed counterclockwise, the lever 12 is lifted up about the rotation shaft 14, the rod 17 of the mechanism 16 is pushed up, and the mechanism 16 is operated. I do. At this time, the forming spring 13 provided on the operation button 11 is bent by the L-shaped tip portion of the rod 17 of the mechanism 16, and the operation button 11 is shaken by a force for restoring this bending. Therefore, even in the case of a product such as a radio cassette having a speaker in the product main body, the product is not affected by sound pressure vibration output from the speaker or the like, and generation of abnormal noise such as resonance can be prevented.

[0006]

However, in the conventional operation button device described above, when the mechanism is in the operating state as shown in FIG. When the external force is applied in the clockwise direction, the operation button cannot be prevented from returning to the bending force of the molding spring 13 due to the external force, and the rod of the mechanism is returned to the user. In addition, there is a problem that the operation button, especially the molded spring is damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. Even when an external force is applied in the return direction of the operation button, the operation button is prevented from being returned by the external force and the operation button is prevented from being damaged. The purpose of the present invention is to provide an operation button device.

[0008]

To achieve the above object, an operation button device according to the present invention comprises: an operation button provided rotatably with respect to a rotation axis and having an operation portion at one end; An operation member formed integrally with the operation button on the opposite side to the part and the rotation axis to operate the operation lever of the mechanism; and an operation member formed integrally with the operation button and opposed to the operation member with a slight gap, and the mechanism is disposed in this gap. And a deflection regulating member formed integrally with the operation button and on the back surface of the surface facing the operation member of the spring to regulate the amount of deflection of the spring.

[0009]

According to the present invention, even when an external force is applied in the return direction of the operation button due to something hitting the operation button in the operation state, the forming spring of the operation button is operated by the external force. The amount of flexure caused by being pressed by the operation lever of the middle mechanism can be suppressed within a specified range, thereby preventing the operation button from recovering abnormally or being damaged.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the operation button device of the present invention will be described below with reference to FIGS. FIG.
FIG. 2 is a side view showing a configuration of an operation button of the operation button device according to an embodiment of the present invention. FIG. 2 shows an operation state of the operation button, and FIG. 3 shows an abnormality when an abnormal return force is applied to the operation button. This shows a return-prevented state.

In each of the figures, a rotary operation button 1 is attached so as to be rotatable about a rotary shaft 5 provided on a housing 6.
Is provided with a kick-up lever 2 as an operating member at the other end of the operating portion 1a. The operating button 1 is formed integrally with the operating button 1 by the same material, or a molded spring 3 to which another material is fixed. Is provided with a slight gap from the kick-up lever 2,
A deflection control rib 4 which is a deflection control member is provided on the back surface (the upper side in this figure) of the surface of the molded spring 3 facing the kick-up lever 2 in a similar manner. Mechanism 7
The L-shaped portion at the tip of the operating rod 8 extended from the end is inserted and clamped in the gap between the kick-up lever 12 and the forming spring 13.

The operation of the operation button device of the present invention configured as described above will be described below. First, as shown in FIG. 2, when the operation portion 1a of the operation button 1 is pressed counterclockwise,
The lever 2 is lifted up about the rotation shaft 5 and pushes up the rod 8 of the mechanism 7, whereby the mechanism 7 operates. At this time, the forming spring 3 provided on the operation button 1 is bent by the L-shaped portion at the tip of the rod 8 of the mechanism 7, and the force for restoring this bending causes the operation button 1 to rattle. , And is not affected by sound pressure vibration or the like output from the speaker, and generation of abnormal noise such as resonance can be prevented. On the other hand, when something hits the operation button 1 in the operation state as shown in FIG.
When only the operation button 1 attempts to return in the clockwise direction while the rod 8 is in the operating state, the amount of deflection of the formed spring 3 increases, and the formed spring 3 is moved back (the upper surface in this case). Of the molded spring 3
The amount of deflection does not increase. Therefore, the abnormal return of the operation button 1 is prevented because the molded spring 3 does not bend.

As described above, according to the present embodiment, even when an external force is applied in the return direction of the operation button 1 due to something hitting the operation button 1 in the operation state, the operation button by this external force is used. A conventional problem that the amount of deflection of the first forming spring 3 can be suppressed within a specified range by a regulating rib 4 provided on the back surface of the forming spring 3, and only the operation button returns while the rod of the mechanism is in the operating state. Points can be prevented beforehand.

In the embodiment, an example of the cassette tape recorder has been described. However, it is needless to say that the present invention is not limited to the cassette tape recorder, and can be applied to an operation button device for operating a mechanism by a similar mechanism.

[0015]

As described above, the operation button device of the present invention has a limit on the amount of deflection on the back surface of a spring for preventing generation of abnormal noise such as resonance due to the influence of sound pressure vibration output from a conventional speaker. By providing the regulating member for regulating, even when an external force is applied in the return direction of the operation button due to something hitting the operation button in the operation state, the forming spring of the operation button by this external force The amount of deflection can be suppressed within the specified range by a regulating member provided on the back of the spring,
It is possible to prevent only the operation button from returning and to prevent the operation button from being damaged.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of an operation button device according to an embodiment of the present invention.

FIG. 2 is a side view showing an operation state of the operation button device.

FIG. 3 is a side view showing an abnormal return preventing state when an abnormal return force is applied to the operation button device.

FIG. 4 is a side view showing a configuration of a conventional operation button device.

FIG. 5 is a side view showing an operation state of the operation button device.

FIG. 6 is a side view showing an abnormal return state of the operation button device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation button 2 Kick-up lever 3 Molding spring 4 Deflection control rib 5 Rotating shaft 6 Housing 7 Mechanism 8 Operation rod

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-209431 (JP, A) JP-A-7-7042 (JP, U) JP-A 62-98123 (JP, U) JP-A 61-98123 83132 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 21/00

Claims (1)

(57) [Claims] An operation button provided rotatably with respect to a rotation axis and having an operation portion at one end, and an operation button integrally formed with the operation portion of the operation button on a side opposite to the rotation axis. An operating member for operating an operating lever of the mechanism, a spring integrally formed with the operating button, facing the operating member with a small gap, and holding one end of the operating lever of the mechanism in the gap; An operation button device formed integrally with the spring and on a back surface of a surface of the spring facing the operation member, the deflection control member restricting the amount of deflection of the spring.