JP4422942B2 - Assembly method and structure of lever-type push switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and structure for assembling a push switch at the tip of a lever in an automotive column switch.
[0002]
[Prior art]
As shown in FIG. 3, a push switch 31 at the end of a lever in a conventional automotive column switch includes a cylindrical cap 33 attached to the end of the lever 32 and a spring (movable contact) 34 at the end of the lever 32. The push button 35 is assembled to the inside of the cap 33 so as to be movable in the axial direction while being urged toward the distal end side of the lever 32. The lever 32 is fixed to a shaft 36 via a retaining ring 37, and the spring (movable contact) 34 is provided at the tip of the lever 32. A bush 41 to which a fixed contact 39 to which a lead wire 38 is soldered and a contact 40 is attached is fixed to the tip of the shaft 36.
[0003]
[Problems to be solved by the invention]
However, in the conventional push type switch 31 at the end of the lever, in the process of assembling the push button 35 and the cap 33 to the end of the lever 32, as shown in FIG. 32, the push button 35 may be detached from the cap 33 during the assembly, and the assemblability is poor.
[0004]
Although it is possible to place the push button 35 on the spring 34 and assemble it, in this case, the spring 34 may be deformed.
[0005]
Accordingly, an object of the present invention is to provide a method and a structure for assembling a push switch at the lever tip that can prevent the push button from being detached from the cap during the assembly of the push switch at the lever tip.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is characterized in that a cylindrical cap attached to the tip of the lever and an axial movement inside the cap while being biased toward the lever tip by a spring at the lever tip. A push type switch at the end of a lever provided with a push button that can be assembled, wherein the push button is inserted into the cylinder of the cap from the upper side opposite to the mounting direction in which the cap is attached to the end of the lever. The push button is temporarily fixed so that the push button does not move in the cap by a temporary fixing means formed by a pair of protrusions provided on the lower end portion of the inner wall of the cap, and the push button is assembled to the cap, and the push button The lower end of the cap abuts against the pair of protrusions, and the temporary stop position is a position where the cap stops below the contact ON position. Is set, characterized in that mounting the cap on the lever front end in a state of falling is prevented downward of the push button from the cap.
[0007]
In the first aspect of the present invention, the push button is attached to the end of the lever after being assembled to the cap in advance, so that the push button can be prevented from coming off from the cap during the assembly, and the assemblability can be improved .
[0008]
Furthermore, in the invention of claim 1 , since the push button is assembled by being inserted into the cylinder of the cap from the opposite side of the mounting direction in which the cap is mounted on the lever tip and temporarily fixed by the temporary fixing means, The button can be reliably prevented from coming off from the cap, and the assembling property can be further improved.
[0009]
The invention according to claim 2 is a cylindrical cap mounted on the tip of the lever, and a push on the lever tip that is movably assembled in the axial direction inside the cap while being urged toward the lever tip by a spring on the lever tip. An assembly structure of a type switch, having a temporary fixing means for temporarily fixing a push button so that the push button does not move in the cap by attaching a push button to the cap from above before attaching the cap to the end of the lever; The temporary fixing means comprises a pair of protrusions provided on the inner wall of the cap, the lower end of the push button abuts on the pair of protrusions, and the temporary fixing position is a position where the cap stops below the contact ON position. It is set to prevent the push button from falling off from the cap.
[0010]
According to the second aspect of the present invention, there is provided a temporary fixing means for temporarily fixing the push button to the cap before the cap is attached to the tip of the lever. Therefore, the push button is inserted into the cylinder of the cap and temporarily fixed. since assembled by tacking, can be prevented reliably disengaged from the cap of the push button in the middle of the assembly, Ki out to further improve the assembling property, it is possible to configure the temporary fixing means in a simple structure it can.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is an exploded cross-sectional view showing a method and structure for assembling a push-type switch 1 at the end of a lever according to an embodiment of the present invention.
[0015]
As shown in FIG. 1, the assembly structure of the push switch 1 at the lever tip of the present embodiment includes a cylindrical cap 3 attached to the lever 2 tip and a spring (movable contact) 4 at the lever 2 tip. It is comprised from the push button 5 assembled | attached to the inner side of the cap 3 so that an axial direction movement is possible in the state urged | biased to the side.
[0016]
The lever 2 is fixed to a shaft 6 via a retaining ring 7, and the spring (movable contact) 4 is provided at the tip of the lever 2. A bush 11 to which a fixed contact 9 and a contact 10 to which a lead wire 8 is soldered is attached is fixed to the tip of the shaft 6.
[0017]
The push button 5 is inserted into the cylinder of the cap 3 from the side opposite to the mounting direction in which the cap 3 is attached to the tip of the lever 2 and is temporarily fixed by the temporary fixing means 12 and assembled.
[0018]
As shown in FIGS. 2A to 2F, the temporary fixing means 12 is formed by a pair of protrusions 15, 15 provided on the lower end portion 14 of the inner wall 13 of the cap 3. The temporary stop position of the push button 5 is set to a position where the cap 3 stops below the contact ON position.
[0019]
In the above configuration, as shown in FIG. 1, the push switch 1 at the tip of the lever 2 is assembled from the side opposite to the mounting direction in which the push button 5 is previously attached to the tip of the lever 2. The cap 3 is attached to the end of the lever 2 after being inserted into the cylinder and temporarily fixed to the temporary fixing means 12 composed of a pair of protrusions 15 and 15 provided on the inner wall of the cap 3.
[0020]
According to this embodiment, in the step of assembling the push button 5 to the tip of the lever 2, the push button 5 is inserted into the cylinder of the cap 3 from the opposite side to the mounting direction in which the cap 3 is attached to the tip of the lever 2 in advance. Since the cap 3 is attached to the tip of the lever 2 after being temporarily fixed and assembled to the temporary fixing means 12 consisting of a pair of protrusions 15 and 15 provided on the inner wall of 3, the push button 5 from the cap 3 in the middle of the assembly Detachment can be reliably prevented, and assemblability can be further improved. Further, the spring 4 is not damaged.
[0021]
In the above embodiment, the pair of protrusions 15 and 15 provided on the cap 3 are used as the temporary fixing means 12, but other configurations may be used as long as the push button 5 can be temporarily fixed to the cap 3.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, the cylindrical cap attached to the tip of the lever and the inside of the cap in the axial direction in a state of being biased toward the lever tip by the spring at the lever tip. A push button that is movably assembled, and after the push button has been assembled to the cap in advance, the cap is mounted on the lever tip, and the push button is capped from the side opposite to the mounting direction in which the cap is mounted on the lever tip. Since the push button is temporarily fixed so that the push button does not move in the cap by the temporary fixing means, the push button can be prevented from being detached from the cap during the assembly, and the assembling property is improved. be able to.
[0024]
According to a second aspect of the present invention, a cylindrical cap attached to the tip of the lever and an axially movable assembly assembled inside the cap while being biased toward the lever tip by a spring at the lever tip. A push-type switch assembly structure at the end of the lever. Before the cap is attached to the end of the lever, the push button is temporarily attached to the cap so that the push button is inserted into the cylinder of the cap. The push button is temporarily fixed so that it does not move in the cap by the temporary fixing means, and the temporary fixing means is composed of a pair of protrusions provided on the inner wall of the cap, so that the temporary fixing means can be easily It can be constructed with a simple structure, and the push button can be reliably prevented from coming off from the cap during assembly. It can be improved only property.
[Brief description of the drawings]
FIG. 1 is an exploded cross-sectional view showing a method and structure for assembling a push-type switch at the end of a lever according to an embodiment of the present invention.
FIG. 2 shows a cap according to an embodiment of the present invention,
(A) is a top view of a cap.
(B) is a front view of a cap.
(C) is a side view of a cap.
(D) is a figure which shows the inner surface of a cap.
(E) is AA arrow directional cross-sectional view of FIG. (C).
(F) is an enlarged detail drawing of the arrow D part of FIG. (C).
FIG. 3 is a cross-sectional view showing an assembly structure of a push switch at the tip of a lever according to a conventional example.
FIG. 4 is an exploded cross-sectional view showing a method and structure for assembling a push-type switch at the lever tip of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Push type switch 2 Lever 3 Cap 4 Spring 5 Push button 12 Temporary fixing means 13 Inner wall 15, 15 A pair of protrusion

Claims (2)

Push of the lever tip provided with a cylindrical cap attached to the tip of the lever and a push button assembled so as to be movable in the axial direction inside the cap while being biased to the lever tip side by a spring at the lever tip Assembling method of type switch,
By inserting the push button into the cylinder of the cap from the upper side opposite to the mounting direction for mounting the cap on the tip of the lever, and by temporary fixing means formed by a pair of protrusions provided on the lower end of the inner wall of the cap The push button is temporarily fixed so as not to move in the cap, the push button is assembled to the cap, the lower end portion of the push button is in contact with the pair of protrusions, and the temporary stop position is lower than the contact ON position. A method of assembling a push-type switch at the lever tip, wherein the cap is attached to the lever tip in a state where the cap is set at a position where the cap is stopped and the push button is prevented from falling off from the cap. An assembly structure of a cylindrical cap attached to the tip of the lever and a push-type switch at the tip of the lever that is attached to the inside of the cap while being urged toward the lever tip by a spring at the lever tip. And
Before attaching the cap to the end of the lever, a push button is assembled to the cap from above to temporarily fix the push button so that the push button does not move within the cap. It consists of a pair of protrusions provided on the inner wall, and the lower end of the push button comes into contact with these pair of protrusions, and the temporary stop position is set at a position where the cap stops below the contact ON position. Push-type switch at the end of the lever, which prevents falling off downward.

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