JPH0130760Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a lever bearing structure suitable for a switch. Specifically, the invention relates to a lever bearing structure suitable for a switch. The present invention relates to a lever bearing structure in which a spring is interposed between the lever and a frame, and the lever is held in a fixed position by the spring.

[Technical background of the invention]

FIG. 1 shows a conventional lever bearing structure in a switch.

In this lever bearing structure, support shafts 2 and 3 are provided protruding from both ends of the lever 1, and bearing portions 5 and 6 are integrally molded at both ends of the frame 4 to restrict movement in the axial direction. These bearing parts 5, 6
are notches 5a and 6a that are opened to the outside, respectively.
Consists of. Further, in this lever bearing structure, a compression spring 9 is fitted into a recess 7 formed at one end of the lever 1 and a recess 8 formed at one end of the frame 4. This spring 9 urges the lever 1 in the direction of arrow A and holds it in a fixed position (a state in which the operating portion 1a of the lever 1 that drives the switch contact is in contact with the stopper 4a of the frame 4).

[Problems with background technology]

By the way, in such a lever bearing structure, one of the support shafts 2 of the lever 1 is urged toward the depth of the notch 5a of the frame 4 by the spring 9, but the other support shaft 3 of the lever 1 is biased by the spring 9. Therefore, when vibration or impact is applied from the outside, the lever 1 may be rotated in the direction of arrow B, causing the lever to malfunction.
There were cases in which the support shaft 3 of the lever 1 came off the bearing part 6 of the frame 4 and the lever fell off from the frame 4.

[Purpose of invention]

This invention was made in view of the above circumstances.
To provide a lever bearing structure that ensures reliable operation of a lever and prevents the lever from falling off from a frame.

[Summary of the idea]

In order to achieve the above object, in the present invention, one of the bearing parts of the frame is formed so that a plurality of bearing pieces surround the support shaft, and the support shaft can be inserted diagonally into the bearing part. A relief portion is formed in the bearing portion or the support shaft, thereby ensuring reliable operation of the lever and preventing the lever from falling off from the frame.

[Example of idea]

Below, regarding the lever bearing structure according to the present invention,
A detailed description will be given with reference to the accompanying drawings.

FIG. 2 shows an embodiment of the lever bearing structure according to the present invention.

In the lever bearing structure of this embodiment, the lever 10
Support shafts 11 and 12 are protruded from both ends of the frame 13.
Bearing portions 14 and 15 are formed at both ends of the shaft. As shown in FIG. 3, one bearing part 14 of this frame 13 has a notch 14 that opens outward (in the direction of arrow C) by an L-shaped piece 14a and a support piece 14b.
c. This L-shaped piece 14a
and the support piece 14b are formed adjacent to each other, so that the frame 13
This makes it possible to mold them together. Further, as shown in FIG. 4, the other bearing section 15 of this frame 13 includes an L-shaped piece 15a and a support piece 15 similar to the case of the bearing section 14 as bearing pieces.
b, and has a locking piece 15c projecting downward at the tip of the L-shaped piece 15a.
shape piece 15a, support piece 15b and locking piece 15
c surrounds the support shaft 12, and forms the shadow hole 15d when viewed in the direction of arrow D. Note that the support piece 15b and the locking piece 15 are connected by a member 15f. These L-shaped pieces 15a, locking pieces 15c, and support pieces 15b are formed adjacent to each other, so that they can be integrally molded with the frame 13 using a split mold that can be split in the vertical direction. . And the support shaft 1 of the lever 10
2 has an inclined part 12a formed at its end as a relief part so that it can be inserted obliquely as shown in FIG. 5 when it is inserted into the hole 15d of the bearing part 15 of the frame 13. Therefore, although the bearing structure is such that the movement of the lever 10 is restricted in the axial direction of the bearing parts 14 and 15, the lever 10 cannot be mounted on the frame 13 as shown in FIGS. 5 and 6. I can do it. Further, in this lever bearing structure, a compression spring 18 is fitted into a recess 16 formed at one end of the lever 10 and a recess 17 formed at one end of the frame 13. With this spring 18,
The lever 10 is biased in the direction of arrow E and held in place, similar to the lever bearing structure shown in FIG.

Next, the operation of this embodiment will be explained, and the configuration of this embodiment will be further clarified.

In such a lever bearing structure, one support shaft 11 of the lever 10 is fixed to the frame 13 by the spring 18.
The support shaft 11 is biased toward the depth of the notch 14c of the bearing portion 14, thereby preventing the support shaft 11 from detaching from the bearing portion 14. In addition, the other support shaft 12 of the lever 10
is surrounded by the pieces 15a, 15b, and 15c forming the bearing part 15 of the frame 13, and is prevented from coming off from the bearing part 15.

7 and 8, a recess 15e is formed in the outer end of the other bearing part 15 of the frame 13 as a relief part when the support shaft 12 is inserted diagonally, and thereby the lever 10 This figure shows another example in which the installation on the frame is made easy.

In the above embodiment, a compression spring is used as the spring, but it is of course possible to use a tension spring.The key is to hold the lever in a fixed position and to move one of the lever shafts to one side of the frame. The manner in which the spring is installed is not particularly limited, as long as it is installed between the lever and the frame so as to be biased toward the depth of the notch in the bearing section.

Furthermore, in the embodiment described above, the locking piece 15c is protruded from the tip of the L-shaped piece 15a to form the hole 15d, but the present invention is not limited to this, and the point is to support the lever 10. The shaft 12 may be formed so as not to separate from the bearing portion 15 of the frame 13, and an escape portion may be provided so that the support shaft 12 can be inserted diagonally.

[Effect of idea]

As explained above, in the lever bearing structure according to the present invention, one bearing part of the frame has an opening so that the support shaft can be inserted from the radial direction, and the other bearing part of the frame has an opening so that the support shaft can be inserted from the radial direction. A plurality of bearing pieces are formed to surround the support shaft at the other end, and a relief part is formed so that the support shaft can be inserted diagonally relative to the other bearing part, so that one support shaft of the lever A spring is interposed between the lever and the frame so as to urge the lever toward the depth of the notch in one of the bearings of the frame, and the lever can be operated reliably. At the same time, it is possible to prevent the lever from falling off the frame.

[Brief explanation of drawings]

Figure 1 is a perspective view showing a conventional lever bearing structure;
Fig. 2 is an exploded perspective view showing one embodiment of the lever bearing structure according to the present invention, Fig. 3 is an enlarged perspective view of one bearing part, and Fig. 4 is an enlarged perspective view of the other bearing part. 5 and 6 are cross-sectional views showing an example in which the relief portion is formed on the support shaft, and FIGS. 7 and 8 are cross-sectional views showing an example in which the relief portion is formed in the bearing portion. . 10... Lever, 11... One support shaft, 12...
...Other support shaft, 12a... Inclined part (relief part), 1
3...Frame, 14...One bearing part, 14c
...Notch, 15...Other bearing part, 15e...
Recessed portion (relief portion), 15d... hole.

Claims (1)

[Claims for Utility Model Registration] (1) Support shafts protruding from both ends of the lever are supported by bearings integrally formed at both ends of the frame,
A lever bearing structure in which a spring is interposed between the lever and the frame, and the lever is held in a fixed position by the spring,
One bearing part of the frame has an opening into which the support shaft can be inserted from the radial direction,
The other bearing part of the frame is made up of a plurality of bearing pieces arranged offset in the axial direction so as to surround the outer periphery of the support shaft, and the support shaft is inserted diagonally into the other bearing part. A lever bearing structure characterized in that a relief portion is formed in at least one of the other bearing portion and the support shaft. (2) The lever bearing structure according to claim 1, wherein the relief portion is formed by cutting out a part of the end of the support shaft. (3) The lever bearing structure according to claim 1, wherein the relief portion is formed by cutting out a part of at least one bearing piece of the other bearing portion.