JPS5829225Y2 - Installation structure of door locking knob - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door lock device installed on the door of a vehicle such as an automobile, and more particularly to a mounting structure for a locking knob attached to a locking rod.

As shown in FIGS. 1 to 3, a door locking knob 1 is a locking rod 3 disposed inside a door 2 of a vehicle or the like.
The locking knob 1 is attached to the tip of the door 2 and protrudes from a hole 5 drilled in the panel 4 of the door 2, and the lock is turned on when the occupant pushes down the locking knob 1 as shown by the solid line in Figure 3. , it can be locked or turned off by pulling it up as shown by the imaginary line in the figure.

In general, the (7) r-shaped puffer knob 1 is attached to the locking rod 3 so that when the knob 1 is pushed down, the lower side of the head 1a has an appropriate gap with the grommet 6 fitted to the panel 4.

The conventional mounting structure for this type of locking knob 1 is to form threaded grooves all around the outer circumferential surface of the tip of the locking rod 3 and the inner circumferential surface of the insertion hole 1b of the locking knob 1, and to install the two by screwing them together. Ta.

However, in order to absorb variations in manufacturing dimensions of the locking device, it is necessary to provide the thread groove over a range of 15 to 20 mm in the axial direction. To attach the locking knob 1, the locking knob 1 must be turned and screwed in many times, which poses problems such as an extremely large number of installation steps.

The present invention was created in view of the above, and its purpose is to cut out a part of the outer peripheral surface of the tip of the locking rod,
Screw-shaped retaining parts are formed on the remaining circumferential part and a part of the inner peripheral surface of the insertion hole of the locking knob, and each engaging part engages when the locking knob and the locking rod are in a predetermined relative position. Both become free in the axial direction without any rotation, and at the relative rotation position where the locking knob has been rotated by a certain amount, each retaining part engages to keep both in a fixed state. This makes the locking knob installation work extremely easy. An object of the present invention is to provide a mounting structure for a door locking knob that can be used as a door locking knob.

The present invention will be explained below with reference to FIGS. 4 to 6.

4A and 4B are side views and enlarged sectional views of the distal end of the locking rod 30, and FIGS. 5A, B, and C are sectional views of the locking knob 10 in different directions.

As shown in FIG. 4, the locking rod 30 has circumferential portions (approximately the circumferential portions) facing each other in the diametrical direction at the distal end thereof.
The arcuate portions 32, 32 are cut out, and discontinuous first screw retaining portions 31, 31 protruding outward are formed in the remaining circumferential portions.

This first threaded engagement part 31.31 is tightly engaged with a second threaded engagement part 14.14 of the locking knob 10, which will be described later.
Needless to say, they are screwed together.

On the other hand, as is clear from FIG. 5, the locking knob 10 is separated from a wide square head 11 and a cylindrical body 12 that is integrated with the head 11. The barrel 12 is formed as a knob for operation and as an attachment part for the locking rod 30.

A locking rod 30 provided in the axial direction of the body 12
The insertion hole 13 has a circular cross-sectional shape, preferably an ellipse, and a part of the circumference on the inner circumference thereof, or inner circumference portions 13a, 13a opposing in the short axis direction of the ellipse, respectively protrude inward. A second threaded retaining portion 14.14 is formed.

As shown in FIG. B and enlarged view C, the second screw retaining portion 14.14 is provided only near the tip (top) of the insertion hole 13, and the second screw retaining portion 14. .14 is a first threaded engagement portion 31 .14 formed on the locking rod 30 .
31, and the thread height of the thread 14A may be the lowest at one end in the circumferential direction and gradually become higher toward the other end.

Reference numeral 15 denotes grooves extending along the axial direction on both sides of the outer circumferential surface of the body portion 12, and engages with the convex portion of the grommet as described later.

Further, in order to facilitate the fitting of each screw engaging portion 14, 14, 31, 31, it is preferable to cut one end portion into a knife shape.

The method of attaching the locking knob 10 and the locking rod 30 having the above configuration is as follows.

First, as shown in FIG. 6A, the first locking rod 30 is
After determining their relative positions so that the screw retaining portions 31 and 31 of the locking knob 10 face in the longitudinal direction of the elliptical insertion hole 13, the locking knob 10 is attached to the locking rod 30.
Insert it into the

In this state, each retaining part 14.14 and 31.31 does not engage, so the locking knob 10 is attached to the locking rod 30.
Therefore, the locking knob 10 can be set at any (desired) position relative to the locking rod 30 without rotating the locking knob 10 at all.

After tightening, turn the locking knob 10 to 9 as shown in Figure B.
When rotated by 0°, each engagement part 14.14 and 31.31
are engaged with each other, and the locking tab 10 is attached to the locking rod 30.

Also, the second screw retaining portion 14.14 on the locking knob 10 side
A screw 14A is formed on the inner surface of the oval insertion hole 13 in the short axis direction, and the height of the thread is lowest at one end and gradually increases toward the other end. Since the first screw retaining portion 31.31 is formed as a screw having a uniform thread height, when the respective engaging portions 14 and 31.31 are engaged, that is, screwed together, As the locking knob 10 and the locking rod 30 rotate relative to each other, the threaded portions of the mating portions 14.14 and 31.31 in the engaged state gradually become engaged with the rotation, approximately 90 mm. 'When rotated, the sliding resistance becomes maximum and the two are firmly engaged.

Therefore, according to the mounting structure of the locking knob 10 of the present invention, the locking knob 10 can be attached by simply inserting the locking knob 10 into the locking rod 30 to a desired position and then rotating the locking knob 10 by a specific amount. can be attached to the locking rod 30, and work efficiency can be greatly improved.

In addition, when actually installing the locking knob 10,
First, a grommet 6 as shown in FIG. 2 is inserted into the locking rod 30.

This grommet 6 is formed with a convex portion 6a that protrudes inward, and when this convex portion 6a engages with a concave groove 15 on the outer periphery of the locking knob 10, the locking knob 10 is rotated against the user's will, that is, locking occurs. To prevent the knob 10 from falling off.

This grommet 6 is fitted into the panel 4 after the locking knob 10 is attached to the locking rod 30.

7 and 8 are diagrams illustrating the structure of a mold for manufacturing the locking knob 10 of the present invention.

As shown in FIG. 7, the outer shape of the locking knob 10 is defined by outer molds a, l), and c, which can be divided into left, right, and upper parts, respectively.

The inner surface of the insertion hole 13 is defined by a medium d whose cross-sectional shape is shown in FIG.

This medium type d is divided into three parts in the diametrical direction: a central type e and a side type f.
9g, and as shown in Fig. 7, each outer mold a,
l), After molding the locking knob 10 by placing it in the inner mold, first pull out the central mold e downward, then remove the side mold f.
The mold can be released by moving both the 5g toward the center and releasing the locking knob 10 from the engaging portion 14 14 of the molded locking knob 10 and then pulling it out downward.

In summary, according to the locking knob mounting structure of the present invention, a part of the outer peripheral surface of the tip of the locking rod is cut out, and a screw-shaped retaining part is formed in the remaining circumferential part, while the inner periphery of the locking knob fitting hole is cut out. Since a retaining portion that can engage with the retaining portion only at a predetermined relative rotational position is formed on a part of the circumference of the surface or on the circumference in the minor axis direction of the elliptical circumference, the locking knob can be easily attached to the locking rod. For installation, all you need to do is insert the locking knob into the desired position and then rotate it by a small angle.The installation process is extremely simple, and the number of installation steps can be greatly reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automobile door, Fig. 2 is an enlarged perspective view of the locking knob, Fig. 3 is a side view of a part of the locking device, Fig. 4 is a view showing the locking rod, and A is a diagram showing the locking rod. A side view of the tip, B is a cross-sectional view taken along the line B-B in Figure A, Figure 5 is a cross-sectional view of the locking knob of the present invention, A is a cross-sectional view corresponding to A-A in Figure 0, and B is B in Figure 0. - Cross-sectional view corresponding to B, C is A
A sectional view corresponding to CC in the figure, FIGS. 6A and B are similar views to FIG. 5C for explaining the engaged state, FIG. 7 is a sectional view of the mold, and FIG. This is a sectional view corresponding to the line ■-■. 2...Door, 4...Panel, 6...
...Grommet, 6a...Protrusion, 10...
... Locking knob, 13 ... Insertion hole, 14
...Engagement part, 15 ... Concave groove, 30 ...
... Locking rod, 31 ... Engagement part,
a, l), c...External type, d...Medium type.

Claims (3)

[Scope of utility model registration request] (1) A part of the outer circumferential surface of the tip of a locking rod in a door of a vehicle, etc. is cut out, and a first threaded engagement part is formed in the remaining circumference, while a locking knob that is inserted into the tip of the locking rod is cut out. A second screw retaining portion that engages with the first screw retaining portion is formed on a part of the circumference of the inner circumferential surface of the insertion hole, and each of the engaging portions engages at a predetermined relative rotation position. The locking knob can freely move in the axial direction with respect to the locking rod without any rotation, and at a relative rotation position where the locking knob has rotated by a specific amount, each of the locking parts engages to fix the locking knob to the locking rod. , and a concave groove in the axial direction is formed in a part of the circumference of the outer peripheral surface of the locking knob, and the convex part of the grommet attached to the vehicle body engages with the concave part to prevent rotation. Installation structure for door locking knobs. (2) The cross section of the insertion hole of the locking knob is oval 1.
The mounting structure for a locking knob for a door according to claim 1, characterized in that a retaining portion is provided on the inner circumferential surface in the short axis direction. (3) The second threaded engagement portion is a thread whose thread height is lowest at one end in the circumferential direction and gradually becomes higher toward the other end. 1
A mounting structure for a door locking knob according to item 1 or 2.