JPH0430745Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a device that opens and closes a switch housed in a case by applying an external force.

<Prior art> Conventionally, there are various configurations for opening and closing a switch housed in a case. A leaf spring member is provided in the case so as to be positioned horizontally at a distance above the operator provided on the top surface of the microswitch so as to close or open the microswitch, and cover the opening of the case. The lid member provided over the opening of the case is composed of a frame-shaped body having an opening and an operating member fitted into the opening of the frame-shaped body, and the operating member is configured to come into contact with the leaf spring member from the inner surface of the operating member. It is conceivable to have a control rod installed on the top.

In this, the operating member is pushed down, the tip of the leaf spring member is bent downward, and this tip pushes down the micro switch operator by a predetermined stroke to open or close the micro switch. . When the force pushing down the operating member is removed, the leaf spring member returns to its original position, the operating member also returns to its original position, and the microswitch operator also returns to its original position, closing or opening the microswitch. .

<Problem that the invention aims to solve> By the way, there is no ordinary switch that can switch on and off over a wide range from several microamperes to several amperes; Currently, we are using something similar. These different uses naturally lead to differences in the size of the switch and the stroke of the switch operator. Therefore, for example, in the above-mentioned device that uses a micro-switch for micro-current, in order to correspond to this micro-switch for micro-current,
Since the mounting position of the leaf spring member is determined, even if you try to use a large current microswitch instead of a microcurrent microswitch for this device, the size of the large current microswitch and the operator There was a problem that the leaf spring member could not be used unless the mounting position of the leaf spring member was changed according to the stroke. Naturally, there was also the opposite problem. That is, the conventional method had a problem of lack of versatility. Furthermore, since the above-mentioned device is provided with only one leaf spring member, there is a problem in that only one microswitch can be opened and closed.

<Means for solving the problems> In order to solve each of the above problems, this invention
A main body, a leaf spring member provided within the main body with one end fixed, and a leaf spring member provided within the main body with one end fixed to the leaf spring member and the other end free. , and a plurality of tongue-shaped portions provided on the sides of the leaf spring member. and,
These tongue-like parts are (1) at least one of these
(2) the distance from the free end of one tongue to the fixed end of the leaf spring member is different from that of the other tongue; or (2) the height of at least one tongue with respect to the leaf spring member; It is formed by selecting at least one of having a position different from that of other tongue-shaped parts.

<Operation> According to this invention, when the free end of the leaf spring member is deflected, the free end of the tongue-like portion is also deflected accordingly.
At this time, if (1) is selected, the distance from the free end of at least one tongue-like part to the fixed end of the leaf spring member is Since the distance to the end is different, the displacement of the free end of the at least one tongue is different from the displacement of the free end of the other tongues. If (2) is selected, the height position of at least one tongue-like portion with respect to the leaf spring member is different from the height position of the other tongue-like portions with respect to the leaf spring member, so this at least one tongue-like portion The displacement start position of the tongue portion is different from that of the other tongue portions.

Therefore, if at least (1) is selected, at least two types of switches with different strokes of the operator can be opened and closed. Furthermore, if at least (2) is selected, at least two types of switches with different heights of operators can be opened and closed.

<Effects> As described above, according to this invention, it is possible to open and close a plurality of types of switches that differ in at least one of the height and the stroke, so it is possible to provide versatility. Further, a plurality of switches having different at least one of height and stroke can be opened and closed at the same time.

<Example> A first example is shown in FIGS. 1 to 3. 1st
In the figure and FIG. 2, 2 is a box-shaped body, which is formed in the shape of a rectangular parallelepiped with the entire upper surface open. A lid member 4 is arranged at the periphery of the opening so as to cover the upper opening of the box-shaped body 2. This lid member 4
consists of a frame-shaped body 6 and an operating member 10 fitted into an opening 8 of this frame-shaped body 6. The peripheral edge of the operating member 10 extends outward beyond the opening 8 and is prevented from coming off upward, and the remaining portion is bulged so as to protrude upward beyond the opening 8. At both ends of the frame-like body 6, protrusions 12 are provided that extend below the operating member 10 and inward from the peripheral edge of the operating member 10, and these protrusions 12 restrict the downward movement distance of the operating member 10. ing. Further, at the center of the inner surface of the operating member 10, an operating rod portion 13 extends downward. These constitute the main body portion 14.

Inside the box-shaped body, there is a synthetic resin rectangular parallelepiped part 16 whose entire lower surface is open, with its lower surface in contact with the bottom surface of the box-shaped body 2, and which is biased towards one end of the box-shaped body 2. It is placed in an ivy position. Rectangular parallelepiped part 1
An opening 18 is formed in the upper surface of the box 6, and within this opening 18, a leaf spring member 20 is integrally formed with the rectangular parallelepiped part 16 and made of synthetic resin so as to be positioned on the central axis of the box-shaped body 2. It is formed. As shown in FIG. 2, this leaf spring member 20 has one end fixed to one edge of the opening 18, and extends horizontally after being curved downward in the middle. By providing this curved portion, the leaf spring member 2
0 has elasticity. The lower end of the operating rod 13 is in contact with the upper surface near the free end of the leaf spring member 20, and in this state, as shown in FIG. It is in contact with the periphery.

As shown in FIG. 1, the tongue-shaped portions 22 and 24 are bent downward from both sides of the leaf spring member 20 at a position closer to the free end side than the curved portion thereof, and then extended parallel to the leaf spring member 20. As is clear from FIGS. 1 and 2, the free end of the tongue portion 22 protrudes from the free end of the leaf spring member 20, but the free end of the tongue portion 24 extends beyond the leaf spring member 20. Co-located with the free end of member 20. Further, as is clear from FIG. 2, the tongue portion 22 is farther from the leaf spring member 20 than the tongue portion 24 is.

According to the switch drive device configured in this way, the tongue-like portion 22 is moved as shown in FIGS.
or, as shown in FIG. By arranging two types of microswitches 30 and 32, either microswitch 30 or 32 can be opened or closed.

This point will be explained below. As shown in FIG. 1, the distance from the fixed end to the free end of the leaf spring member 20 is a, and the distance from the free end of the leaf spring member 20 to the free end of the tongue portion 22 is b, and FIG. Let the stroke of the operating member 10 be s as shown in FIG. At this time, when the operating member 10 is pushed downward by a stroke s, the leaf spring member 2
0 is also displaced downward, and the tongue-like portions 22 and 24, which are integral with the leaf spring member 20, are also displaced together.
At this time, the amount of displacement of the leaf spring member 20 is naturally s, but the free end of the tongue portion 24 and the amount of displacement of the leaf spring member 20 are
As is clear from Figure 1, the distance from the fixed end of
Therefore, the amount of displacement of the free end of the tongue portion 24 is also s
It is. However, since the distance between the free end of the tongue portion 22 and the fixed end of the leaf spring member 20 is (a+b) as is clear from FIG. 1, the amount of displacement of the free end of the tongue portion 22 is (1+b/a)s. That is, the amount of displacement of the tongue-shaped portion 22 is larger than that of the tongue-shaped portion 24. Further, as is clear from FIG. 2, the tongue portion 22 is farther from the leaf spring member 20 than the tongue portion 24 is. Therefore, the tongue-shaped portion 2
2 has a displacement start point closer to the bottom surface of the main body 2 than the tongue-shaped portion 24. Due to these, the tongue piece-like portion 22 is displaced more than the tongue-like portion 24 from a position closer to the bottom surface of the box-like body 2.

Therefore, as shown in FIG. 2, the height dimension is _h1 , the stroke of the operator 26 is _s1 , and the tongue-shaped portion 5 is extended from a position relatively close to the bottom surface of the box-like body 2. The micro switch 30, which cannot be opened or closed unless it is displaced, may be placed below the tongue portion 22. Of course, in this case, the distance d ₁ between the tongue portion 22 and the top surface of the microswitch 30 needs to be less than or equal to (1+s/a) s. Further, as shown in FIG. 3, the height dimension is _h2 , the stroke of the operator 28 is _s2 , and the tongue-shaped portion is short from a position relatively far from the bottom surface of the box-like body 2. The micro switch 32, which can be opened and closed by displacement, may be placed below the tongue portion 24. In this case as well, the distance d ₂ between the tongue portion 24 and the microswitch 32 needs to be less than or equal to s. Further, the height h ₁ of the micro switch 30 is smaller than the distance from the tongue 22 to the bottom of the box 2, and the height h ₂ of the micro switch 32 is smaller than the distance from the tongue 24 to the bottom of the box 2. Naturally, the distance is smaller than the distance to the bottom of No. 2. Furthermore, if the microswitch 30 is placed below the tongue-like part 22 and the microswitch 32 is placed below the tongue-like part 24, both the microswitches 30, 3
2 can be opened and closed at the same time.

A second embodiment is shown in FIGS. 4 and 5. This embodiment is constructed in the same manner as the first embodiment except that the distance between the free ends of the tongue portions 22a, 24a and the fixed end of the leaf spring member 20 is the same. In this way, the tongue-like portions 22a and 24a have different displacement starting points, but the displacement amounts are the same. Therefore, as shown by the dotted line in Fig. 5, since the strokes of the operators are the same, the distances that the tongues must be displaced in order to open and close are both d ₃ , but the height dimensions are different. Either type of micro switch can be opened or closed, or both can be opened and closed at the same time.

A third embodiment is shown in FIGS. 6 and 7. This embodiment has the same structure as the first embodiment except that the tongue portions 22b and 24b are positioned in the same position relative to the leaf spring member 20. In this way,
Although the tongue portions 22b and 24b have different displacement amounts, their displacement starting points are the same. Therefore, as shown in FIG. 7, both height dimensions are equal to h ₃ , but due to differences in the stroke of the operator, etc., the distance that the tongue-shaped portion is displaced to open and close becomes d ₄ and d ₅ . You can open and close either of the two different types of microswitches, or you can open and close both at the same time.

In each of the above embodiments, the number of tongues is two, but if it is necessary to open and close two or more different types of microswitches, the number of tongues is two or more, and each tongue At least one of the following may be selected: the positions of the tongue portions relative to the leaf spring member are different, or the distances between the free ends of the tongue portions and the fixed ends of the leaf spring members are different. Furthermore, although the distance between the free end of each tongue-like portion 24 and the fixed end of the leaf spring member was made equal to the distance between the free end and the fixed end of the leaf spring member, the free end of each tongue-like portion 24 and the fixed end of the leaf spring member Spring member 2
0 may be smaller than the distance between the free end and the fixed end of the leaf spring member 20. In this case, a displacement amount smaller than the displacement amount s of the leaf spring member can be obtained, and it is suitable for opening and closing a micro switch with a displacement amount smaller than the displacement amount s. Further, in the above embodiment, the tongue portions 22 and 24 are located at a position below the leaf spring member 20, but they are located at the same height as the leaf spring member 20 or above the leaf spring member 20. It may be provided at any position. In this case,
This is suitable for a micro switch in which the operator is located at approximately the same position as the leaf spring member 20 or higher than the leaf spring member 20. Further, in each of the above embodiments, a micro switch is used, but a tact switch may be used instead.

[Brief explanation of drawings]

FIG. 1 is a plan view of the first embodiment of the switch drive device according to this invention with the lid member removed;
Fig. 2 is a cross-sectional view of the first embodiment taken along line A-A in Fig. 1, and Fig. 3 is a partially omitted cross-section of the first embodiment using a switch different from that shown in Fig. 2. figure,
FIG. 4 is a partially omitted plan view of the second embodiment, and FIG.
The figure is a partially omitted vertical sectional view of the second embodiment, FIG. 6 is a partially omitted plan view of the third embodiment, and FIG. 7 is a partially omitted longitudinal sectional view of the third embodiment. 14... Body part, 20... Leaf spring member, 22,
22a, 22b, 24, 24a, 24b...tongue-shaped parts.

Claims (1)

[Claims for Utility Model Registration] A main body, a leaf spring member provided within the main body with one end fixed, and a leaf spring member provided within the main body with one end fixed to the leaf spring member and the other end. a plurality of tongue-shaped portions that are provided on the sides of the leaf spring member and drive an operator of the switch, with the tongue-shaped portions being free ends, and at least one of the tongue-like portions The distance from the free end of the tongue portion to the fixed end of the leaf spring member is different from that of the other tongue portions, or the height position of at least one tongue portion with respect to the leaf spring member is different from that of the other tongue portions. A switch driving device comprising at least one of the tongue-shaped portions and the tongue-shaped portion.