JP2007242580A - Lever switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stop axial movement of a lever shaft without increasing the number of components and without play. <P>SOLUTION: In a lever body 12, one end of the lever shaft 17 is inserted into a shaft insertion hole part 14a and rotatably arranged, and the lever shaft 17 is rotatably operated by an operation piece 18. A recessed part 19 to be engaged is formed at the one end of the lever shaft 17, and a stopper part 20 engaging with the recessed part 19 to be engaged from a direction nearly perpendicular to the axial direction of the lever shaft 17 to regulate the axial movement of the lever shaft 17 is formed integrally with a cover 16 closing an opening 15 of the lever body 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lever switch device in which a lever shaft is disposed inside a lever main body so as not to be detached.

  Conventionally, as this type of lever switch device, there is a lever switch device disclosed in Patent Document 1. In this device, a lever shaft is rotatably provided inside the lever main body, and the lever shaft is rotated by an operation element so that, for example, a switch operation related to a light switch of an automobile is performed. And in this thing, it is set as the structure which aims at removal prevention of this lever axis | shaft by fitting C ring to the said lever axis | shaft.

  However, since the lever switch device described in Patent Document 1 uses a C-ring, which is a separate member, the number of parts is increased and parts management is troublesome. In order to solve this problem, a lever switch device having the configuration shown in FIG. 6 is provided. This has the following configuration. The lever main body 1 is formed with a shaft support portion 2 having a shaft insertion hole 2 a formed therein, and an opening 3 is formed on the outer surface near the shaft support portion 2. The opening 3 is used for internal inspection or for attaching / detaching parts. The opening 3 is closed by a cover 4.

In addition, one end portion of the lever shaft 5 is inserted into the shaft insertion hole portion 2a so as to be rotatable inside the lever body 1. Further, an operating element 6 is rotatably disposed on the lever body 1 and is connected to the other end of the lever shaft 5. The switch is switched by rotating the operation element 6.
Further, engaging claw portions 5a and 5a that can be elastically deformed (expandable / reducible) in the radial direction are formed at the distal end portion of the lever shaft 5, and the engaging claw portions 5a and 5a are inserted through the shaft. The lever shaft 5 is prevented from coming off in the direction of arrow A by being inserted through the hole 2a.
Japanese Utility Model Publication No. 6-43981

However, in the conventional configuration shown in FIG. 6, in order for the engaging claws 5a and 5a to elastically deform and pass through the shaft insertion hole 2a and to return elastically, the engagement surface 2b of the shaft support 2 A certain amount of clearance is required, and there is a problem that the lever shaft 5 is likely to be loose with respect to the shaft support portion 2.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lever switch device capable of preventing the movement of the lever shaft in the axial direction without increasing the number of parts and without rattling. It is in.

  The present invention has a substantially cylindrical shape, and includes a shaft support portion in which a shaft insertion hole portion is formed, and a lever body having an opening formed on the outer surface near the shaft support portion, and the inside of the lever body. One end of the lever shaft is inserted into the shaft insertion hole and is rotatably provided, and the lever body is connected to the other end of the lever shaft so as to be rotatable. A switch that switches based on the cover, a cover that is mounted so as to close the opening of the lever body, and an engaged recess formed in a portion of the lever shaft that protrudes from the shaft insertion hole. And a stopper that is integrally formed with the cover and that engages the engaged recess of the lever shaft from a direction substantially perpendicular to the axial direction of the lever shaft to restrict the movement of the lever shaft in the axial direction. And has a feature.

  According to the present invention, since the stopper portion is formed integrally with the cover for closing the opening of the lever main body, the number of parts and the number of assembling steps are not increased. Since the engaging recess is engaged with the engaged recess from a direction substantially perpendicular to the axial direction of the lever shaft to restrict the movement of the lever shaft in the axial direction, there is no need to form the stopper portion so as to be elastically deformable. That is, the stopper portion can be formed as a rigid body, and the movement of the lever shaft in the axial direction can be prevented by the engagement in the direction orthogonal to the axial direction, so that the lever shaft can be prevented from coming off without rattling. .

The first embodiment of the present invention will be described below with reference to FIGS. The lever switch device 11 is used, for example, in an automobile light switch device, and a lever body 12 of the lever switch device 11 is rotatably attached to a switch device body 13 shown in FIG.
The lever body 12 is made of a synthetic resin. The lever body 12 has a shaft support portion 14 formed with a shaft insertion hole portion 14a therein, and has an opening on the outer surface near the shaft support portion 14. Part 15 is formed. The opening 15 is used for internal inspection or for inserting and detaching parts such as a cord. The opening 15 is closed by a cover 16 made of, for example, a synthetic resin.

Also, inside the lever main body 12, one end of the lever shaft 17 is inserted into the shaft insertion hole portion 14a so as to be rotatable. Further, an operating element 18 is disposed on the lever main body 12 so as to be rotatable in the direction of arrow R and the opposite direction, and is connected to the other end of the lever shaft 17. By rotating the operating element 18, a light switch (not shown) provided in the lever body 12 is switched.
Now, in the lever shaft 17, an engaged recess 19 is formed at one end (a portion protruding from the shaft support portion 14). The engaged recess 19 is composed of a pair of grooves 19a and 19a. The groove portions 19 a and 19 a are formed on the outer surface of the lever shaft 17 in a direction substantially perpendicular to the axial direction.

The cover 16 is integrally formed with a stopper portion 20. This stopper part 20 is comprised from a pair of locking piece part 20a, 20a which opposes. In this case, the opposing distance dimension Bw of the middle part (the part engaging with the groove part 19a) of the locking piece parts 20a, 20a is set to be substantially the same as the distance dimension Cw of the pair of groove parts 19a, 19a. The opposing spacing dimension of the tip end portions of the locking pieces 20a, 20a is set slightly smaller than the spacing dimension Cw, and as a whole has a substantially C-ring shape. Further, the thickness dimension Bt of the locking piece portions 20a, 20a is set to be substantially the same as the width dimension Ct of the pair of groove portions 19a, 19a.
When the cover 16 is attached to the opening 15 of the lever main body 12, the stopper portion 20 is formed in the grooves 19 a and 19 a of the engaged recess 19 of the lever shaft 17 with respect to the axial direction of the lever shaft 17. Engagement is performed from a substantially orthogonal direction (arrow D direction).

  According to the present embodiment, since the stopper portion 20 is formed integrally with the cover 16 for closing the opening portion 15 of the lever body 12, the number of parts and assembly man-hours are not increased. Moreover, the stopper portion 20 engages the engaged recess 19 of the lever shaft 17 from a direction substantially perpendicular to the axial direction of the lever shaft 17 to restrict the movement of the lever shaft 17 in the axial direction. It is not necessary to form the stopper portion 20 so as to be elastically deformable, that is, the stopper portion 20 can be formed as a rigid body, and the lever shaft 17 is moved in the axial direction by engagement in a direction orthogonal to the axial direction. Since it can be blocked, the lever shaft 17 can be prevented from coming off without rattling.

In particular, according to the present embodiment, the stopper portion 20 is composed of a pair of engaging piece portions 20a, 20a facing each other, and the engaged recessed portion 19 is composed of a pair of groove portions 19a, 19a. The same retaining performance as the ring can be expected.
FIG. 5 shows a second embodiment of the present invention. In this second embodiment, the stopper portion 21 is composed of a pin portion 21a, and the engaged recess 22 is substantially the same as the axial direction of the lever shaft 17. It is comprised from the orthogonal | vertical hole 22a. Even if it does in this way, the same effect as the above-mentioned can be acquired.
In addition, this invention is not limited to an above-described Example, For example, you may change suitably the shape of a stopper part or a to-be-engaged recessed part. Further, the present invention may be applied to a lever switch device such as a washer switch in addition to an automobile light switch.

The perspective view of the lever main-body part in the state before showing the 1st Example of this invention and attaching a cover Exploded perspective view of stopper and engaged recess Sectional view of the lever body partly broken Front view of lever switch device FIG. 2 equivalent view showing a second embodiment of the present invention FIG. 3 equivalent view showing a conventional example

Explanation of symbols

  In the drawings, 11 is a lever switch device, 12 is a lever body, 14 is a shaft support portion, 14a is a shaft insertion hole portion, 15 is an opening portion, 16 is a cover, 17 is a lever shaft, 18 is an operating element, and 19 is engaged. Reference numerals 19a and 19a denote groove parts, 20 denotes a stopper part, 20a denotes a locking piece part, 21 denotes a stopper part, and 22 denotes an engaged recessed part.

Claims (2)

A lever main body having a substantially cylindrical shape and provided with a shaft support portion in which a shaft insertion hole is formed, and an opening formed on the outer surface near the shaft support portion;
Inside the lever body, one end is inserted into the shaft insertion hole, and the lever shaft is disposed rotatably.
An operator connected to the other end of the lever shaft and provided to the lever main body so as to be rotatable, and for switching a switch based on the operation,
A cover attached to the opening of the lever main body so as to close the opening;
An engaged recess formed in a portion protruding from the shaft insertion hole of the lever shaft;
A stopper portion that is formed integrally with the cover, engages with the engaged recess of the lever shaft from a direction substantially perpendicular to the axial direction of the lever shaft, and restricts movement of the lever shaft in the axial direction; A lever switch device comprising:   The lever switch device according to claim 1, wherein the stopper portion includes a pair of opposing locking pieces, and the engaged recessed portion includes a pair of groove portions.

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