JPS62385Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rod connecting bush for connecting, for example, a rod connected to an outside handle of an automobile and a plate-shaped connected member such as an operating lever of a door lock.

Conventional bushes of this type include those shown in FIGS. 1 to 3.

This bush a has two rod receiving surfaces d ₁ and d of different heights on the upper surface of a flange part d formed at the upper end of an oval cylindrical part c which has a beveled protrusion b for preventing the bush from coming off at the lower end. ₂ , and this cylindrical part c
, the operating lever f in the car door lock e
An insertion portion i 1 of the tip is fitted into a long hole g drilled in the hole g, and is bent into a step shape at the lower end of a push rod i connected to the outside handle h of the automobile _. Insert the rod into the abutment part i ₂ of the stepped part of the rod i that faces to the side.
Either d ₁ or d ₂ is in contact with each other.

According to this bush a, by changing the mounting position to the operating lever f by 180 degrees, the rod i
By selecting the rod receiving surfaces d ₁ and d ₂ that come into contact with the abutting portion i ₂ of the rod, and adjusting the play interval between the rod i and the bush a, it is possible to substantially adjust the effective length of the rod i.

However, in the conventional bush a of this type, the oval cylinder part c was fitted into the long hole g of the operating lever f, and the bush a was restrained so that it could not rotate. After attaching the bushing to the operating lever f, the mounting position cannot be changed unless the bushing a is pulled out from the operating lever f again.
Moreover, since the work of removing the bushing a is troublesome, there is a drawback that it is inconvenient for the actual installation work.

Particularly when adjusting the effective length of the rod i after assembling the door, it is extremely difficult to remove the bush a.

In the above example, the number of adjustment steps is two, but if the number of adjustment steps is three or more, the adjustment becomes even more complicated.

The purpose of the present invention is to provide a rod connection bushing that eliminates the above-mentioned drawbacks and complications. A plurality of rod receiving surfaces are formed, and a suitable number of elastically deformable legs having locking protrusions on the lower outer peripheral surface are provided at the lower end of the cylindrical portion to correspond to the rod receiving surfaces in the circumferential direction. the leg piece is fitted into a fitting hole provided with at least one engagement recess formed in a member to be connected, and one of the leg pieces elastically projects into the engagement recess. By doing so, the cylindrical portion can be rotated with the required degree of moderation with respect to the fitting hole, and the insertion portion at the free end of the rod is fitted into the cylindrical portion, and the insertion portion of the rod is inserted into the cylindrical portion. The present invention is such that any one of the rod receiving surfaces can come into contact with an abutting portion that is bent laterally at the upper end.

Next, the present invention will be explained based on the embodiments shown in FIG. 4 and subsequent figures.

4 to 9 show a first embodiment of the present invention.

In this first embodiment, the entire bushing 1 is made of a hard synthetic resin having appropriate elasticity, such as nylon 6, and the upper end of the cylindrical part 2 in the vertical direction of the bushing 1 is made to have gradually different heights. The four rod receiving surfaces 3a, 3b, 3c, 3d are formed in a substantially cross shape, and each rod receiving surface 3a, 3
Rod receiving surfaces 3a, 3b, 3c, 3 are adjacent to each other on both sides that continuously connect them between b, 3c, and 3d.
Inclined surfaces 4a, 4b, , which rise slightly above d.
4c and 4d are formed.

Four cross-shaped protrusions 5 are formed on the outer circumferential surface of the lower end of the cylindrical portion 2 to facilitate rotation of the bush 1.

At the center of the lower end of the cylindrical portion 2, in a portion corresponding to each of the rod receiving surfaces 3a, 3b, 3c, and 3d, there are four elastically deformable legs 6, each having a substantially semicircular cross section, extending in the circumferential direction. A wedge-shaped protrusion 7 is formed on the outer peripheral surface of each leg piece 6 at an appropriate interval and slightly above the lower end thereof to prevent it from coming off.

Four elastically deformable tongue pieces 8, which face the centripetal direction of the cylinder part 1 and whose tips point slightly downward, extend from the connecting part between each leg 6 and the cylinder part 2. When the insertion portion 11b of the rod 11 (to be described later) is inserted into the cylindrical portion 2, the tongue piece 8 comes into elastic pressure contact with the outer circumferential surface of the insertion portion 11b, and prevents play between the insertion portion 11b and the cylindrical portion 2. This is to prevent this, and to push the lower ends of the legs 6 outward by lever action to ensure engagement between the protrusion 7 and the periphery of the fitting hole 10 of the operating lever 9, which will be described later.

Reference numeral 9 designates an operating lever for an automobile door lock, which is a member to be connected, and has substantially square fitting holes 10 formed at key points thereof. However,
Each corner of this fitting hole 10 forms an engaging recess 10a.

Reference numeral 11 denotes a bush operating rod whose upper end is connected to an outside handle (not shown) of a car door, and whose lower end is bent at a right angle, and which is bent at a right angle. An insertion portion 11b parallel to the rod 11 is bent at a right angle at the free end of the rod 11.

Then, each leg 6 of the bush 1 is fitted into the fitting hole 10 of the operating lever 9 so that the projection 7 for preventing the bushing from coming off engages with the lower edge of the fitting hole, and each leg 6 is then fitted into the fitting hole 10 of the operating lever 9.
However, by slightly rotating the bushings 1 so that they elastically enter the engagement recesses 10a, the bushings 1 can be installed in a manner that prevents them from coming off and preventing them from rotating.
It is configured to be able to rotate with the required degree of moderation relative to the fitting hole 10 of the operating lever 9.

Further, the insertion portion 11b of the rod 11 is inserted into the bush 1, and when the rod 11 is pushed down, the contact portion 11a of the rod 11 is inserted into one of the rod receiving surfaces 3a, 3b, 3c, and 3d. They are starting to touch each other.

Since the present invention has the above configuration,
To adjust the effective length of the rod 11 when the bushing 1 is fitted to the connected member 9 and the outside handle and the connected member 9 are connected by the rod 11, it is necessary to This can be done by pinching and rotating the protrusion 5 with your fingers, and with this rotation, the contact portion 11a of the rod 11 rises (descends) along the slope of the bush 1 and moves to the next rod receiving surface. At the same time, each leg piece 6 bends all at once, detaches from the engagement recess 10a, and moves into the next adjacent engagement recess 1.
0a, and the button 1 can be stopped from rotating to the next contact position, so by this operation,
By appropriately selecting rod bearing surfaces with different heights,
In effect, the effective length of the rod can be adjusted.

Therefore, it is easy to assemble and adjust the parts to be connected, the bush, and the rod, and the effective length of the rod can also be readjusted while the bush is still attached, without having to remove it each time. It can be easily adjusted and has great practical benefits.

In addition, the foot of the bush elastically enters the engagement recess of the fitting hole, and the bush is elastically stopped from rotating at the desired position, which prevents the bush from rotating accidentally and malfunctioning. There is no danger of inviting it.

In the embodiment described above, the shape of the fitting hole 10 is approximately square, and the legs 6 are all of the same shape. However, as in the second embodiment shown in FIG. The fitting hole 10' formed in the connecting member is approximately hexagonal, each corner thereof is an engaging recess 10a', and the foot piece is formed into a fitting hole 10'.
It has a wide arcuate leg 6a' inscribed in a part of the engagement recess 10a' and a narrow leg 6b' facing the leg 6a'. By protruding in either direction, the bush may be elastically prevented from rotating at a desired position.

Further, as in the third embodiment shown in FIG.
The foot pieces 6'' are provided at equal intervals, the fitting hole 10'' drilled in the connected member is circular, and one small arc-shaped engagement recess 10a'' is formed in a part of the fitting hole 10''. The bush may be elastically stopped from rotating at a desired position by having one of the legs 6'' enter the engagement recess 10a''.

In addition, in the second and third embodiments, the shape and structure of the cylindrical part of the bushing is the same as in the first embodiment, with a height that allows contact with the abutting part of the rod at the detent position of the bushing. It is sufficient to provide rod receiving surfaces of different heights.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the main part of an automobile door showing the mounting state of a conventional rod coupling bushing, Fig. 2 is a perspective view of the bushing, and Fig. 3 is taken along the line X-X in Fig. 1. The enlarged sectional view, FIG. 4, is the first part of the present invention.
FIG. 5 is a front view of the bushing, FIG. 6 is a plan view of the bushing, FIG. 7 is a bottom view of the bushing, and FIG. The figure is a developed view of the cylindrical portion of the bushing, FIG. 9 is a cross-sectional view taken along the Y-Y line in FIG. 4, and FIG. 10 is a cross-sectional view of the same portion as in FIG. 11 are cross-sectional views of the same portion as FIG. 9 in the third embodiment of the present invention. 1...Button, 2...Cylinder part, 3a, 3b, 3
c, 3d...Rod receiving surface, 6, 6a', 6b', 6''
... Leg piece, 7 ... Protrusion, 8 ... Tongue piece, 9 ... Operation lever (connected member), 10, 10', 10'' ...
Fitting hole, 10a, 10a', 10a''...engaging recess,
11...rod, 11a...contact part, 11b...
Insertion part.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of rod receiving surfaces of different heights are formed at the upper end of the vertically oriented cylinder, and a projection for preventing the rod from coming off on the outer peripheral surface of the lower part is formed at the lower end of the cylinder. A suitable number of elastically deformable legs are vertically disposed at positions corresponding to the rod receiving surface in the circumferential direction, and the legs are inserted into at least one engagement recess formed in the member to be connected. The cylindrical portion can be rotated with a desired degree of moderation relative to the fitting hole by fitting into a fitting hole provided with the fitting hole and having one of the legs elastically protrude into the engagement recess. Further, the insertion portion at the free end of the rod is inserted into the cylindrical portion, and any of the rod receiving surfaces can abut on a contact portion bent laterally at the upper end of the insertion portion of the rod. A bush for connecting rods. (2) There are four legs, spaced at equal intervals in the circumferential direction, and the fitting hole drilled in the connected member is approximately square, with each corner serving as an engaging recess. 1. A rod connecting bush as set forth in claim (1) of the utility model registration claim, characterized in that: (3) The fitting hole formed in the member to be connected has a substantially regular polygonal shape, each corner of which is an engaging recess, and the foot piece has an arcuate width inscribed in a part of the fitting hole. 1. A rod connecting bush according to claim 1, which is characterized by having a wide foot and a narrow foot opposing the foot. (4) Practical use characterized in that a plurality of legs are provided at equal intervals, the fitting hole drilled in the connected member is circular, and a small arc-shaped engagement recess is connected to a part of the fitting hole. A rod connecting bush as set forth in claim (1) of patent registration.