JPS6216492Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a link lever mounting structure, and more particularly to a link lever mounting structure that improves the shaft interposed between the link lever and the mounting panel.

A conventional coupling lever mounting structure will be described in connection with, for example, an automobile door lock shown in FIGS. 1 to 3. As shown in FIG. 2, the dogleg-shaped linking lever 1 is rotatably mounted on a mounting panel 4 provided at a predetermined space behind the outer panel 3 of the door 2 by screwing a shaft member. ing. Referring to Figure 1, when the inner lock knob 5 is manually pressed, one end of the link lever 1 is pushed down by the link 6a and rotates counterclockwise around its axis. The link 6b is moved horizontally to the left to cause the door lock 7 to perform a predetermined locking operation. When pulling and pulling the inner lock knob 5, the operation is completely opposite to the above. Link lever 1
As shown in the longitudinal cross-sectional view of FIG. It is attached by tightening. FIG. 3 shows a detailed cross-sectional view of the mounting portion. That is, in order to prevent abnormal noises caused by rattling due to frequent rotation, nylon washers 10 are sandwiched between both sides of the linking lever 1 in the shape of a sandwich wedge, and a metal washer 11 is placed below the screw head of the threaded shaft member 8. The lever 1 is rotatably assembled to the threaded shaft member 8 by inserting the lever 1 into the mounting hole 4' of the mounting panel 4 and caulking the tip 8' of the threaded shaft member 8. At step 7, the flanged nut 9 is screwed onto the threaded portion of the threaded shaft member 8, and the screw is tightened.

By the way, in such a connection lever mounting structure, the threaded shaft member 8 is threaded, the nylon washer 10 or the metal washer 11 is used.
etc., and the number of parts increases overall.
Not only this, but when attaching to the mounting panel 4 of an automobile, it is necessary to tighten the screws in a narrow space 7 between the outer panel 3 of the door 2 and the mounting panel 4, which is extremely inefficient and has poor workability. .

Therefore, the main purpose of this invention is to provide a new link lever mounting structure that improves the above-mentioned drawbacks, reduces the number of parts, and improves workability.

In other words, this invention has a structure for attaching a linking lever that rotates within a predetermined angular range and interlocks the operation of one side with the other, so that the shaft fits into the linking lever only at a predetermined rotational position, and the shaft is removed in that state. A first elastic locking piece that makes it impossible to remove and a second elastic locking piece that restricts rotation of the shaft and the linking lever in the fitted state are formed on at least one of the shaft and the linking lever. At the same time,
The shaft is formed so that it can be inserted into and removed from the mounting panel only at a predetermined rotational position, and the shaft is linked so that it cannot be removed from the mounting panel by rotating the shaft from this position. The essential feature is that the lever has a mounting structure.

Hereinafter, this invention will be explained in detail with reference to embodiments of the drawings.

FIG. 4 is an exploded perspective view of a link lever mounting structure for an automobile door lock as an embodiment of this invention, in which reference numeral 12 is a link lever made of resin or iron plate material and has a dogleg-shaped appearance, and 13 is a link lever made of resin or the like. A shaft 14 is made of a substantially cylindrical material and has a flange 13 at its center, and a mounting panel 14 is made of a thin plate material such as an iron plate and has a mounting hole 14' into which the shaft 13 is mounted.

At the upper end of the shaft 13, a pair of first protrusions 15, 15 protrude outward in the diametrical direction of the shaft.
is formed, and this pair of protrusions has a rectangular end surface 15a parallel to the axial direction and rectangular side surfaces 15b, 15.
b, and has a rectangular parallelepiped shape as a whole. on the other hand,
At the lower end of the shaft 13, second protrusions 16, 16 are formed which protrude outward in the diametrical direction of the shaft 13 in exactly the same manner as the upper end. The flange 13' is formed to restrict insertion in the axial direction and to function like a washer to prevent friction between the linking lever 12 and the mounting panel 14. And the above-mentioned collar part 1
3', first protrusion 15, 15 and second protrusion 1
6 and 16 are integrally molded of, for example, resin, and constitute one shaft 13.

Next, the shaft hole 17 of the linking lever 12 generally matches the cross-sectional shape (cross-section perpendicular to the axial direction) of the upper end of the shaft 13, and the pair of first protrusions 15, 1
5 is provided with a recessed portion through which it passes in the axial direction. When the shaft 13 is fitted into the shaft hole 17, the rectangular side surfaces 1 of the first protrusions 15, 15
The inner wall of the recess of the shaft hole 17 in which the shaft holes 5b and 15b are in sliding contact is provided with elastic tongue pieces 18, 18, 18, 18 whose upper end is a free end and whose lower end is integrally molded at the lower part of the inner wall and extends obliquely upward from the lower part of the inner wall. is formed,
This elastic tongue piece 18 is for making it impossible to remove the shaft 13 in the axial direction when the shaft 13 is fitted into the recessed part of the shaft hole 17. Furthermore, a linking lever 1 is provided on the upper part of the inner wall of the recess of the shaft hole 17 into which the rectangular end surface 15a of the shaft 13 is inserted in sliding contact.
A pair of convex elastic stopper pieces 19, 19 are formed so as to extend upward from the upper surface of the shaft hole 2, and to be elastically deformable outward when the first protrusions 15, 15 pass through the shaft hole 17. This convex elastic stopper piece 19 is for temporarily locking the shaft 13 to realize temporary assembly.

A mounting hole 14' is bored in the mounting panel 14, and the shape of the mounting hole 14' roughly matches the cross-sectional shape (cross-section perpendicular to the axial direction) of the lower end of the shaft 13. 13 second protrusion 1
It has a shape that includes a concave portion that allows passage of 6 and 16. That is, the second protrusion 16 of the shaft 13,
16, and therefore, when inserting the shaft 13 into this mounting hole 14', only one direction is allowed.

The member having the structure and shape as described above is the fifth
As shown in the figure, first, the shaft 13 is inserted into the shaft hole 17 of the link lever 12 and temporarily assembled. At this time, the elastic tongue pieces 18, 1 provided on the inner wall of the shaft hole 17
8, 18, 18 are pressed against the surface 15b of the first protrusion 15 and spread out. Then, when the first protrusion 15 comes out onto the upper surface of the linking lever 12, the elastic compression is released and the lever returns to its natural state. Therefore,
In this state, the upper part of the free end of the elastic tongue piece 18 and the lower end surface of the lower part of the side surface 15b of the first protrusion 15 come into contact with each other, and the shaft 13 becomes unable to be removed in the axial direction.
On the other hand, in this fitted state, the convex elastic stopper piece 19,
19 elastically compresses the end surfaces 15a, 15a of the first protrusion 15 in the diametrical direction. Therefore, shaft 1
3 and the linking lever 12 can be temporarily assembled, and from now on, both members can be handled as one. Next, as shown in FIG. 5, both members thus temporarily assembled are inserted into the mounting hole 14' of the mounting panel 14 from a certain direction on the outside of the mounting panel. Figure 6 shows the shaft 13 rotated 90 degrees after it has been inserted.
FIG. 7 is a cross section of the main part. In this state, the shaft 13 is connected to the second protrusion 1 from the mounting hole 14'.
6 and 16, so that it cannot be removed and is freely rotatable. Note that in the state shown in FIG. 6, the links 6a and 6b shown in FIG.
are connected to holes 12a and 12b formed in the arms of the linking lever 12, respectively, and function as a practical linking lever.

FIG. 8 shows another embodiment of this invention, in particular a temporarily assembled state using convex elastic stopper pieces, in which a is a perspective view of the temporarily assembled state, and b is a sectional view taken along the line a. , c are perspective views of the shaft 13 rotated 90 degrees after being attached to the mounting panel 14. That is, as shown in FIG. 8b, a substantially spherical recess 19a is formed inside the convex elastic stopper piece 19 of the link lever 12, and the spherical recess 19a is formed on the end surface 15a of the first protrusion 15 of the shaft 13. A substantially spherical convex portion that fits into the fitting 19a is formed to strengthen the locking strength and to make the temporary assembly more reliable.

FIG. 9 shows still another embodiment of this invention, and in particular is a diagram showing in detail a pre-assembled state according to another embodiment in which the end face of the first protrusion 15 is elastically held; Perspective view of temporarily assembled state, b is Fig. 9a
Fig. 3 is a cross-sectional view taken along the line 1 and c is a perspective view of the shaft 13 rotated by 90 degrees after being attached to the mounting panel 14. That is, as shown in FIGS. 9a and 9b, the end surface 15 of the first protrusion 15 of the shaft 13
Elastic tongue pieces 15d, 15d whose lower ends are free ends and which extend diagonally downward from the upper end of the end surface 15a are integrally formed on a, and elastic tongues 15d are elastically contracted inward when inserted.
After fitting, the convex stopper piece 1 of the linking lever 12
9' and 19' to achieve elastic locking.

In addition, in each of the above embodiments, the shaft 13
Although the cross-sectional shape of the lower end was similar to the cross-sectional shape of the upper end, the present invention is not limited to this.
That is, the cross-sectional shape of the lower end portion may be any shape as long as the second protrusion 16 protrudes outward in the diametrical direction. In other words, the mounting hole 14' of the mounting panel 14 has an arbitrary shape that can be inserted into the mounting hole of the mounting panel 14 from only one direction and cannot be removed from the mounting hole 14' of the mounting panel 14 after being fitted. The shape depends on the cross-sectional shape of the lower end of the shaft 13.

In addition, in the above explanation, the mounting structure of the linkage lever that is related to the door lock of a car was specifically described, but there is no reason why it should be limited to this, and it should be understood that it can be applied to the mounting structure of the linkage lever in general. It is.

As detailed above, according to this invention, by devising the shape of the axial end of the shaft that is attached to the shaft hole of the link lever and the mounting hole of the mounting panel, the number of parts can be reduced to one, and the number of parts can be reduced to one. Since it is only necessary to simply insert from one direction from the outside without using screws, it is possible to improve efficiency and workability significantly. Furthermore, the assembly work can be made more flexible by temporarily assembling the link lever and the shaft.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an automobile door lock for explaining the conventional linkage lever mounting structure;
The figure is a longitudinal cross-sectional view thereof, and FIG. 3 is a detailed cross-sectional view of a conventional linkage lever mounting structure. FIG. 4 is an exploded perspective view of one embodiment of this invention, FIG. 5 is an exploded perspective view for explaining the temporarily assembled state, and FIG.
FIG. 7 is a perspective view of the embodiment shown in the figure attached to a mounting panel, and FIG. 7 is a sectional view of the main part of FIG. 6.
FIG. 8 shows another embodiment of this invention, in which a is a perspective view, b is a cross-sectional view taken along the line 2, and c is a perspective view of the installed state. FIG. 9 shows still another embodiment of this invention, in which a is a perspective view, b is a sectional view taken along the line
c is a perspective view of the attached state. 12... Link lever, 13... Shaft, 14
...Mounting panel, 14'...Mounting hole, 15...First protrusion, 15a...First protrusion end surface, 16...
Second protrusion, 17... shaft hole, 18... elastic tongue piece,
19...Convex elastic stopper piece.

Claims (1)

[Claims for Utility Model Registration] One end of the shaft is provided with a retaining means for restricting insertion in the axial direction in the center, and at least a pair of first projections projecting outward, The shaft hole recess of the lever is provided with a second protrusion protruding outward at the other end, and has a recess into which the one end of the shaft can be fitted together with the first protrusion. The inner wall is provided with a plurality of walls that bend freely to allow passage of the first protrusion, and that contact the lower surface of the first protrusion when the shaft is removed, making it impossible for the shaft to be removed. The lever is provided with an elastic tongue piece, and a convex stopper piece is provided on the upper surface of the lever that protrudes in the insertion direction of the shaft and elastically holds the end face of the first protrusion, and further includes a mounting panel with a mounting hole into which the shaft can be fitted; one end of the shaft is fitted into the shaft hole;
Holding the end face of the first protrusion between the opposing convex stopper pieces and temporarily assembling the members, and inserting the other end of the shaft into the mounting hole from one direction, A linkage lever mounting structure characterized in that the shaft cannot be removed from the mounting panel by rotating the shaft.