JPH05258644A - Switch driving device - Google Patents

Abstract

PURPOSE:To obtain a switch driving device which is inexpensive and simple in structure by providing a conical projection part on one part and a circular arc-like shape on the other part at the interconnection part of an operating knob and a conversion lever. CONSTITUTION:A control knob interconnecting groove 2d has a circular arc-like shape, and a conversion lever interconnecting shaft 4e has a conical projecting part. When the operating knob 2 and a knob part 2a are rotated in the direction as shown with an arrow mark A, the conical conversion lever interconnecting shaft 4e formed in one body with a conversion lever 4 is rotated in the opposite direction to the knob part 2a about the center of the rotation axis together with the control knob interconnecting groove 2d. The operating knob interconnecting groove 2d and the conversion lever interconnecting shaft 4e are in point contact with each other, so that it can move smoothly. Thereby, the adequate strength of parts can be ensured. The structure of parts and the die structure are simple and inexpensive and at the same time operating force is stable and it can constitute an operating knob and a conversion lever in which the vertical planes to each axis of rotation are not in parallel with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch driving device using a conversion lever.

[0002]

2. Description of the Related Art In recent years, a switch driving device has been required to have an inexpensive and simple structure for connecting a switch and an operating portion which enable remote operation of the switch for standardization and sharing of the switch and the printed circuit board.

An example of the conventional switch driving device described above will be described below with reference to the drawings.

The same reference numerals in FIG. 2, FIG. 3, and FIG. FIG. 2 shows an assembled state of a conventional switch driving device in which a conversion lever is slid to switch a switch. In FIG. 2, the knob portion 2a of the operation knob 2 protruding from the cabinet 1
When is rotated in the direction of arrow A, the operation knob connecting shaft 2b rotates in the opposite direction of the knob portion 2a around the operation knob rotating shaft 3a formed integrally with the chassis 3. Since the operation knob connecting shaft 2b is inserted into the conversion lever connecting groove 4a formed integrally with the converting lever 4, the operating knob connecting shaft 2b moves up and down along the converting lever connecting groove 4a and at the same time moves the converting lever 4 in the arrow B direction. , Switch 5 is switched.

FIGS. 3 and 4 show the assembled state of a conventional switch driving device which switches the switch by rotating the conversion lever 4. In FIG. 3, the operation knob 2
When the knob portion 2a is rotated in the direction of the arrow A, the operation knob connecting groove portion 2c and the conversion lever rotating shaft (not shown) integrally formed with the chassis 3 are screwed together with the screw 7 so as to be rotatable. The cylindrical conversion lever connecting shaft 4b integrally formed with the converted conversion lever 4 rotates in the opposite direction to the knob portion 2a about the rotation shaft. Therefore, the switch insertion part of the conversion lever rotates in the direction of arrow B,
The switch switches. FIG. 4 shows that the conversion lever connecting shaft 4b shown in FIG. 3 is composed of a conversion lever connecting sphere 4c and a columnar portion 4d connecting the conversion lever connecting sphere 4c, and even if the knob portion 2a is rotated, the columnar portion 4d and the operation knob connecting groove portion 2c are formed. Without touching
The conversion lever 4 can be smoothly rotated (arrow view), and the plane perpendicular to the rotary shaft 3a of the operation knob is perpendicular to the rotary shaft (not shown) of the conversion lever.
It does not have to be configured in parallel.

[0006]

However, in the conventional switch driving device as described above, the rotary shaft 3 of the operating knob is used.
There is a problem that the plane perpendicular to a can only be parallel to the plane perpendicular to the rotation axis of the conversion lever, and the connecting portion between the operation knob 2 and the conversion lever 4 must have a spherical shape. In addition, there is a problem that the shape of the mold becomes complicated, and the conversion lever connecting sphere 4c and the columnar portion 4d connecting it have to be smaller in diameter than the conversion lever connecting sphere 4c, so that the strength is sufficient. It had a problem that it could not be obtained. Further, the structure for sliding the conversion lever 4 has a problem that the operating force varies due to friction and the operating force is reduced, so that the cost is increased by applying grease to the sliding portion.

In view of the above-mentioned conventional problems, the present invention has been made with the object of providing an inexpensive and simple switch drive device.

[0008]

In order to solve the above problems, a switch driving device of the present invention comprises an operation knob and a conversion lever whose vertical planes which are not parallel to each other's rotation axes are parallel to each other. In the connecting part of one, the one part has a conical convex part, and the other part is configured to have an arcuate shape at a few places of the conical convex part Is.

[0009]

According to the present invention, the operating knob and the connecting portion of the converting lever are in point contact with each other due to the above-mentioned structure. As a result, the arrangement of the connecting portions does not need to be parallel to the vertical planes with respect to the mutual rotation axes, the shape of each component and the mold structure are easy, and an operation knob and a conversion lever having sufficient strength can be configured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the switch driving device of the present invention will be described in detail below with reference to FIG.

FIG. 1 shows an assembled state of a switch driving device according to an embodiment of the present invention.

In FIG. 1, reference numeral 2d denotes an operating knob connecting groove having an arcuate shape. 4e is a conversion lever connecting shaft, which has a conical convex portion.

The operation of the switch driving device constructed as above will be described below.

Since the same reference numerals as those in the conventional example shown in FIGS. 2, 3 and 4 are the same mechanical parts, the description thereof will be omitted.

When the knob portion 2a of the operation knob 2 is rotated in the direction of arrow A, the conical conversion lever connection shaft 4e integrally formed with the conversion lever 4 is centered on the rotation axis at the same time as the operation knob connection groove portion 2d. First, it rotates in the opposite direction to the knob portion 2a. At this time, the operation knob connection groove portion 2d and the conversion lever connection shaft 4e, which have an arcuate shape, take a locus as shown in an arrow view and a sectional view. The operation knob connection groove portion 2d and the conversion lever connection shaft 4e are in point contact with each other, so that they can move smoothly. The shape of the conversion lever connecting shaft 4e is preferably the shape shown in FIG. 5, but since the angle θ in FIG. 5 is constant in each shape, if the rotation angle α is up to 20 degrees. The error is about 6%, and a straight line may be used.

As described above, according to this embodiment, at the connecting portion between the operation knob 2 and the conversion lever 4, one part has a conical convex portion, and the other part has the conical convex portion. By having an arcuate shape at several parts that contact the conical part of the part, the parts have sufficient strength, and the parts structure and mold structure are simple and inexpensive, and at the same time, the operating force is It is possible to form the operation knob and the conversion lever that are stable and whose vertical planes with respect to the rotation axes are not parallel to each other.

[0017]

As described above, according to the present invention, at the connecting portion between the operation knob and the conversion lever, one part has a conical convex part, and the other part has a conical convex part. It is configured to have an arcuate shape in several parts that contact the part, so it has sufficient part strength, the part structure and mold structure are simple and inexpensive, and the operation force is stable. However, it is possible to configure an operation knob and a conversion lever whose vertical planes are not parallel to each other's rotation axes.

[Brief description of drawings]

FIG. 1 is an assembly diagram of a switch driving device according to a first embodiment of the present invention.

FIG. 2 is an assembly diagram when a conversion lever of a conventional switch driving device is slid to switch a switch.

FIG. 3 is an assembly diagram of a case where a conversion lever of a conventional switch driving device is rotated to switch a switch (operation knob, a vertical plane of a conversion lever rotation axis is parallel).

FIG. 4 is an assembly diagram of a case where a conversion lever of a conventional switch driving device is slid to switch the switch (the operation knob and the vertical plane of the conversion lever rotation shaft are not parallel).

FIG. 5 is a plan view showing the shape of the arc of the operating knob connecting portion.

[Explanation of symbols]

 1 cabinet 2 operation knob 2a knob portion 2b operation knob connecting shaft 2c operation knob connecting groove portion 2d operation knob connecting groove portion having an arcuate shape 3a operation knob rotating shaft 4 conversion lever 4a conversion lever connection groove 4b conversion lever connection shaft 4c conversion lever Connecting sphere 4d Column 4e Conical conversion lever Connecting shaft 5 Switch

Claims (1)

[Claims] 1. A connecting portion between a knob and a conversion lever arranged so as to be in contact with the knob, wherein one of the knob and the conversion lever has a conical convex portion, and the other has the conical convex portion. A switch drive device, characterized in that several parts in contact with the conical part of the are formed in an arc shape.