JPH0346435Y2 - - Google Patents

Description

[Detailed description of the invention] <Field of the invention> This invention relates to a snap switch.

<Prior art and its problems> Conventionally, as shown in FIG. 4, as shown in FIG.
3a (FIG. 5) supports an operating plate 104 for seesaw movement, and a slide piece 106 on the distal end side of the operating lever 105 pivotally supported by the switch housing 100, which can be elastically displaced, comes into contact with the operating plate 104. In some cases, the operating lever 105 has a snapping property.

In this case, the operation plate 104 is connected to the fulcrum part 103.
Because of the local wear caused by a, the constituent materials are limited to wear-resistant materials. In particular, the operation plate 104 provides snappability to the operation lever 105 and the push button 10.
Since the operating lever 105 is configured to see-saw and act as a driving body for the operating plate 104, the pressing force against the operating plate 104 becomes weak when the operating lever 105 passes near the neutral position. For example, when returning the operating lever 105 from the ON position (chain line position) to the OFF position (solid line position), the return force of the push button 101 overcomes the return force and the contact point (not shown) reverses before it completely returns to the OFF position. There was a risk of dripping or chattering.

An operating chip 107 is fixed to one end of the operating plate 104, and an auxiliary spring 1 engages with the operating chip 107.
Although it has been considered to prevent the above-mentioned chattering by providing the auxiliary spring 108, the problem of wear is unavoidable, the structure becomes complicated, and the engagement force of the auxiliary spring 108 must be precisely adjusted. Otherwise, stable operability will not be obtained.

<Purpose of the invention> This invention was made to solve the above-mentioned problems of the conventional products. It eliminates local wear of parts, expands the selection of materials, and improves operation without the need for complicated adjustments. The purpose is to provide a snap switch with excellent performance.

<Structure and effects of the invention> The snap switch according to this invention has an operation lever for ON and ON on the push button setting surface of the switch body.
A slider is provided that is driven by the OFF operating force to push and release the push button, and the guide body of this slider is used to move the operating lever between the ON and OFF positions via the slide piece at the tip of the operating lever. It has a sloping surface in the shape of a slant, which gives it a snappy feel.

In this invention, the push button is driven by a slider, which eliminates the risk of localized wear of parts such as those having a fulcrum structure, and increases the selectivity of the constituent materials of the parts. In particular, due to the configuration in which the operating force on the operating lever side and the return force on the push button are separated by the sloped surface of the slider and guide body,
The push button will not return inadvertently when the control lever is in the neutral position during operation. Appropriate operability can be ensured, and there is no need for troublesome adjustments such as those that require an auxiliary spring.

<Description of Embodiments> FIG. 1 shows an example of a snap switch according to this invention.

In the same figure, 11 is a switch housing;
2 is a switch body fixed to the switch housing 11, and 13, 14, and 15 are external terminals. 1
Reference numeral 6 designates an operating lever rotatably supported by a pin 17 on the switch housing 11;
A slide piece 19 is attached to the distal end side of the slide member 6 and is biased toward the distal end by a spring 18. Reference numeral 20 denotes a push button that is set on the upper wall surface of the switch body 12 so as to be able to go in and out.

A slider 21 is provided on the upper wall surface of the switch main body 12 and is slidable in the direction in which the operating lever 16 is operated. As shown in FIG. 2, this slider 21 consists of a base 21a, a push button pressing part 21b provided at one end of this base 21a, and a retaining part 21c provided at the other end of the base 21, A tapered part 22 is formed at the lower end of the push button pressing part 21b so that the pushing operation can be performed smoothly.
It is adapted to be driven to the ON position and OFF position by the slide piece 19 in response to ON and OFF operations of the operating lever. An elastic locking piece 23 extending along the sliding direction is integrally formed on the side surface of the slider 21 as shown in FIG. It is set to be removably engaged with an engagement recess 24 in the inner wall of a through hole of a guide body, which will be described later.

25 is a guide body fixed to the switch housing 11 side or the upper wall surface of the switch main body 12 as in this example,
A through hole 26 is formed to guide the insertion.
Reference numeral 27 denotes a curved inclined surface formed on the upper surface of the guide body 25, and one side 27a of the inclined surface 27 provides a snapping property to the operating lever 16 via the slide piece 19 in the ON position. The other one 27b provides snapping properties to the operating lever 16 via the slide piece 19 in the OFF position.

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

When the operating lever 16 is rotated from the OFF position in FIG. 1A to the left (in the direction of arrow 1), the spring 18
The slide piece 18 that has received the spring force moves to the guide body 25.
After sliding one inclined surface 27b of the upper surface to the right (arrow 2 direction), sliding the other inclined surface 27a to move the slider 21 to the right. When the slider 21 moves to the right, the push button is pressed.The slider 21 moves to the right to press the push button.
1b presses the push button 20 on the switch body 12 side in the ON position of FIG. 1B, so the contact (not shown)
Turn on.

When the operating lever 16 is rotated from the ON position shown in FIG. 1B to the left (in the direction of the arrow 2), the slider 21 returns to the OFF position shown in FIG. 20 protrudes and the contact turns OFF.

Here, the operating force of the operating lever 16 is transmitted to the push button 20 via the slider 21,
There are no parts that wear locally, making it easier to select component materials.

In particular, even if the operating lever 16 is in the middle of sliding on the inclined surfaces 27a and 27b on the upper surface of the guide body 25, unless the slide piece 19 drives the slider 21 at the reversed position, the push button 20 will remain in its previous state. can be kept. That is, when the operating lever 16 is turned OFF, for example, while the slide piece 19 is sliding from one inclined surface 27a toward the inclined surface 27b, the push button 20 is not pressed by the slider 21. Therefore, the push button 20 will not inadvertently protrude and return to its original position, eliminating the possibility of chattering or the like.

By the way, if an external shock is applied to the switch when the operating lever 16 is in the neutral position, the slider 21
However, in the above configuration, the locking portion 23a of the elastic locking piece 23 is in the third position at the neutral position.
As shown in the figure, since it engages with the engagement recess 24 on the guide body 25 side, it is possible to reliably prevent the slider 21 from being moved inadvertently due to impact or the like.

Note that the ON position and the OFF position may be configured to be completely opposite to those described above.

[Brief explanation of the drawing]

1A and 1B are side sectional views showing an example of the snap switch according to this invention in different operating states, FIG. 2 is a perspective view of the main parts of the same snap switch, and FIG.
The figure is an explanatory diagram of the elastic locking piece on the slider, Figure 4 is a side view showing a conventional snap switch, Figure 5 is an exploded perspective view of the support part of the operation plate of the conventional one, and Figure 6 is an exploded perspective view of the conventional snap switch. FIG. 3 is a side view showing the snap switch of FIG. DESCRIPTION OF SYMBOLS 11... Switch housing, 12... Switch body, 16... Operation lever, 19... Slide piece, 20... Push button, 21... Slider, 25... Guide body, 27a, 27b... Inclined surface.

Claims (1)

[Scope of utility model registration request] The switch body is fixed to the switch housing, the operating lever has a slide piece that can pivot elastically on the tip side and is rotatably supported on the switch housing, and the push button setting surface of the switch body is connected to the switch body. It is arranged so that it can slide, and the above-mentioned operating lever is
a slider that is moved between the ON and OFF positions by the slide piece in response to ON and OFF operations; a guide body that is fixed to the switch housing or the switch body and guides the slider;
A snap switch comprising a letter-shaped inclined surface formed on the guide body and imparting snappability to the operating lever via a slide piece when the operating lever is turned ON and OFF.