JPH0731467Y2 - Alternate operation mechanism of push button switch device - Google Patents

Description

<Detailed Description of the Invention><Field of the Invention> The present invention relates to an alternate operation mechanism of a pushbutton switch device applied to an illuminated pushbutton switch device or the like.

<Prior Art and Its Problems> Conventionally, some illuminated push-button switch devices have an alternate operation mechanism (see Japanese Utility Model Publication No. 59-7699).

As shown in FIG. 7, this mechanism pivots a base end portion 103a of a sub-lever 103, which is driven by being pushed into an operation shaft 102 on the side of a push button (not shown) held on the apparatus body 101 side, to the apparatus body 101. A quick spring 106 is hung between the tip side of the operation lever 105 for turning on / off the switch 104 and the tip side of the sub-lever 103, and is formed of a wire spring to form a base end portion 107.
Reference character a denotes a tip portion 107b of the hook spring 107 fixed to the tip portion 103b of the sub-lever 103, which is slidably locked in the heart-shaped cam groove 108 on the apparatus body 101 side. When the sub-lever 103 is turned downward by pushing the push button, the operation lever 105 is turned upward and the switch 104 is turned on, while the tip portion 107b of the hook spring 107 is turned on the cam groove 108. The ON state is held by being locked by the position locking portion 108a. When the push button is pushed again, the switch 104 is turned off by the reverse operation to the above, and ON / OFF is alternately switched every time the push button is pushed.

By the way, in the conventional device, as shown in FIG. 8, a groove 109 and a locking hole portion 110 located at one end thereof are formed on the upper surface side of the tip portion 103b of the sub-lever 103, and the base of the hook spring 107 is formed. As shown in FIG. 9, the end portion 107a was inserted into the locking hole portion 110 and then snapped into the groove 109 to be fixed. Therefore, when the press-fitting of the base end portion 107a of the hook spring 107 is halfway, the hook spring 107 floats up from the sub-lever 103 at the time of operation, causing a malfunction.

Further, in FIG. 8 and FIG. 9, a pair of small protrusions (not shown) facing each other are provided at the edge portion in the middle portion of the groove strip 109, and the narrow gap between these small protrusions is used to It is disclosed that the base end portion 107a of the hook spring 107 is press-fitted into the groove 109 and the base end portion 107a is held at two positions of the locking hole portion 110 and the small protrusion.

However, the base end portion 107 of the hook spring 107 formed by the small protrusions is
Since the holding of a is weak in strength and is easily damaged, the base end portion 107a of the hook spring 107 easily protrudes from the groove 109, and there is a problem substantially similar to the above case.

<Purpose of Invention> This invention was made to solve the above problems.
An object of the present invention is to provide a highly reliable alternation operation mechanism of a push button switch device by firmly locking the base end portion of a hook spring to achieve stable alternation operation.

<Structure and Effect of the Invention> An alternate operation mechanism according to the present invention has a groove formed on one side surface of a rotating lever into which a base end portion of a hook spring is fitted, and a groove line that communicates with both ends of the groove line. And a groove portion formed on the other side surface of the moving lever and into which both ends of the base end portion of the hook spring are fitted.

According to the above configuration, the base end of the hook spring is fitted into the groove formed on one side surface of the rotating lever, and both ends of the base end of the hook spring are formed on the other side surface of the rotating lever. Since it is held at each bottom of the groove, the protrusion of both ends of the base end of the hook spring from the groove bottom can be regulated from the upper and lower sides by the bottom of each groove and the groove bottom. Therefore, the base end of the hook spring can be firmly locked to the turning lever to achieve a stable alternate operation.

<Description of Embodiments> Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway front view showing an example in which the alternate operating mechanism of a push button switch device according to the present invention is applied to an illuminated push button switch device.

In the figure, reference numeral 1 denotes a rectangular tube-shaped main body case made of synthetic resin or the like, and a push button 2 is vertically movably fitted to the upper end opening. The push button 2 is composed of a holder member 4 of the illuminated light emitting element 3, a cap holder 5 fitted into the holder member 4, and the like. The cap holder 5 includes a color plate (not shown) or a transparent plate which constitutes an illuminated surface portion. Cap 6
Is installed. The lighting operation of the light emitting element 3 is a well-known configuration that is interlocked with the pushing operation of the push button 2, and the description thereof is omitted.

A plurality of external terminals 7 are provided in the lower end opening of the body case 1.
A terminal base 8 having a plurality of switches 9 ₁ and 9 ₂ is held in the terminal base 8 and fixed therein. The terminal base 8 and the main body case 1 form an apparatus main body 10. Reference numeral 11 denotes an alternate operating mechanism incorporated in the terminal base 8, which will be described with reference to FIG.

In FIG. 2, reference numeral 12 denotes each operating rod 9a of the switches 9 ₁ and 9 _2.
It is an operation lever having a substantially inverted V-shape for driving and turning ON / OFF, and a pair of pivots 13 ₁ and 13 ₂ are provided on both left and right sides of the base end portion 12a so as to project. Standing wall portions 14 ₁ and 14 ₂ are integrally formed on the left and right sides of the terminal base 8 respectively, and a U-shaped pivotal groove 1 is formed at each front end of the compatible wall portions 14 ₁ and 14 _2.
5 ₁ and 15 ₂ are the pivots 13 ₁ and 13 ₂ on the side of the operation lever 12 described above.
Are pivotally supported respectively.

16 ₁ and 16 ₂ are pivotal grooves formed at the rear ends of the standing wall portions 14 ₁ and 14 ₂ , respectively. Reference numeral 17 is a sub-lever of a substantially V shape which is disposed above the operation lever 12 and is pushed and driven by the operation shaft 18 (FIG. 1) on the push button 2 side.
the pivot支溝16 ₁ a pivot 19 _1, 19 ₂ projecting from the left and right sides of a,
It is fitted and supported on 16 ₂ . Operation lever 12 above
A quick spring 22 is hung between the protrusion 20 formed on the tip portion 12b of the sub-lever 17 and the hook-shaped portion 21 formed on the lower surface of the tip portion 17b of the sub-lever 17.
Is adapted to reverse the operation lever 12 when the sub-lever 17 is rotated downward and displaced beyond a predetermined level position.

Reference numeral 23 is a heart-shaped cam groove formed on the right side surface of the terminal base 8 and has locking portions 23a and 23b corresponding to ON and OFF states of the switches 9 ₁ and 9 ₂ , respectively. Numeral 24 is a hook spring composed of a substantially L-shaped wire spring. Sub lever 17 above
As shown in FIG. 3 and FIG. 4, on the lower surface of the front end portion 17b of the groove 17, a groove 25 into which the base end portion 24a of the hook spring 24 is fitted.
Are formed along the left-right direction, and the hook springs are formed on both end portions of the groove 25 in the left-right direction as shown in FIG.
Both end groove portions 26 and 27 are formed to fit both ends of the base end portion 24a of 24, respectively. The base end portion 24a of the hook spring 24 is inserted into both end groove portions 26 and 27, fitted into the groove 25, and locked to the sub-lever 17.

Further, the tip end 24b of the hook spring 24 is bent into an L shape and is locked to the OFF position locking portion 23b of the cam groove 23.

In the figure, 28 is a separator interposed between the switches 9 ₁ and 9 ₂ , and 29 is a vacant space for arranging the quick lever formed in the operation lever 12.

Next, the operation of the above configuration will be described.

When the push button 2 is pushed downward, the sub-lever 17 is rotationally displaced downward via the operating shaft 18, and the quick spring 22 is compressed. When the rotational displacement of the sub-lever 17 exceeds a consideration point determined by the engagement position level between the sub-lever 17 and the quick spring 22 and the engagement position level between the operation lever 12 and the quick spring 22, the spring force of the quick spring 22 is increased. Then, the operation lever 12 is rotated from the position shown in FIG. 6 (A) to the position shown in FIG. 6 (B), so that the operating rods 9a of the switches 9 ₁ and 9 ₂ are raised to move the switches 9 ₁ and 9 9. ₂ is turned on and the light emitting element 3 is also turned on. On the other hand, by turning the sub-lever 17,
The tip 24b of the hook spring 24 slides from the OFF position locking part 23b to the ON position locking part 23a while being guided by the cam groove 23. Therefore, even if the sub-lever 17 releases the pushing operation of the push button 2, the sub-lever 17 is held at the turning position shown in FIG. 6 (B), and thus the ON states of the switches 9 ₁ and 9 ₂ are also held. .

When the push button 2 is pushed again, the tip end portion 24b of the hook spring 24 separates from the ON position locking portion 23a and is guided by the cam groove 23 to slide toward the OFF position locking portion 23b.
Therefore, the sub-lever 17 also rotates upward, and the operation lever 12 also rotates from the position shown in FIG. 6 (B) to the position shown in FIG. 6 (A), and the operating rods 9a of the switches 9 ₁ , 9 ₂ are rotated. Since the switch is pushed in, the switches 9 ₁ and 9 ₂ are turned off, and the light emitting element 3 is also turned off. That is, each time the push button 2 is pressed, the switches 9 ₁ and 9 ₂ are alternately switched on and off.

As is apparent from the above, the base end portion 24a of the hook spring 24 is
As shown in FIG. 5, the groove 25 and the groove portions 26, 2 at both ends thereof are
The position regulation from above by the bottom portion 25a of the groove 25 and the position regulation from below by the bottom portions 26a and 27a of the both end groove portions 26 and 27, respectively, allows firm position regulation from both upper and lower sides. Done.

Therefore, the hook spring 24 is firmly locked without the base end portion 24a of the hook spring 24 protruding from the groove 25 formed in the sub-lever 17, and a stable alternation operation can be achieved.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an example in which the alternate operation mechanism of a push button switch device according to the present invention is applied to an illuminated push button switch device, and FIG. 2 is an exploded perspective view showing an alternate operation mechanism of the switch device. FIGS. 3, 3 and 4 are a perspective view and a partial side view, respectively, showing a sub-lever in the alternate operation mechanism, and FIG. 5 is a front sectional view showing a hook spring mounting structure for the sub-lever, and FIG. 6 (A). , (B) are explanatory views of the operation of the alternate operating mechanism, FIG. 7 is an explanatory view of the alternate operating mechanism of the conventional push-button switch device, and FIGS. 8 and 9 are hooks for the sub-lever in the conventional alternate operating mechanism. It is the perspective view and front sectional view which show the attachment structure of a spring. 2 ... Push button, 9 ₁ , 9 ₂ ...... Switch, 10 …… Device body, 12 …… Operation lever, 17 …… Sub lever,
22 …… quick spring, 23 …… cam groove, 23a, 23b …… locking part, 24 …… hook spring, 24a …… base end, 24b …… tip part, 25 …… groove, 25a …… groove Bottom of the strip, 26, 27 ... Both end grooves, 26a, 27a ... Bottom of both end grooves.

Claims (1)

[Scope of utility model registration request] 1. A base end portion of a hook spring is locked to a rotary lever which is interlocked with a pressing operation of a push button, and a tip end portion of the hook spring is locked to a heart-shaped cam groove formed on the apparatus main body side. In the alternate operation mechanism of the push-button switch device that locks and holds the rotating lever at a predetermined rotating position, a groove formed on one side surface of the rotating lever and into which the base end of the hook spring is fitted. A groove formed on the other side surface of the rotary lever in communication with both ends of the groove and having both ends of the hook spring fitted into both ends of the base of the hook spring, and the base of the hook spring from the bottom of the groove. An alternate operating mechanism for a push-button switch device, characterized in that protrusions at both ends of the end portion are configured to be restricted from both upper and lower sides by the bottom portions of the both-end groove portions and the groove bottom portion.