JPH0524769Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a locking knob for locking and unlocking an automobile door.

(Prior Art) Some door locking knobs lock or unlock the door by pushing or pulling up. In this system, a lock device built into the door panel is connected to a knob via a link, and the lock device is operated by raising and lowering the link. Therefore, since the structure allows the link to be raised or lowered by raising or lowering the knob, there is a risk that the locked state may be illegally released. For this reason, various knobs equipped with tamper-proofing means have been developed.

For example, the applicant of the present invention also proposed a locking knob with anti-tamper protection in November 1, 1985 (Utility Application No. 168780/1988). However, there was room for improvement as follows.

(Problems to be Solved by the Invention) Concerning the ease of assembling the inner knob 40 In terms of the order of assembling the knob, the link 41 is installed after the cover plate 43 of the knob casing 42 is installed. Therefore, the work of screwing the link 41 into the inner knob 40 must be done completely by hand, since the entire inner knob 40 is completely housed within the knob casing 42 (see FIG. 8). For this reason, it is difficult to assemble as it may get caught on the return spring 44.

About abnormal noises Considering the insertion work of the link 41 as described above, the link insertion hole 45 of the link 41 and the cover plate 43 is
A relatively large clearance (dimension x shown in FIG. 9) is provided. This is because it is a groping process, and it is necessary to change the insertion direction of the link 41 in various ways. However, due to this, when vibrations from the vehicle are transmitted, it may rattle and produce abnormal noise. In addition, since the return spring 44 is not fixed, it may bend during expansion and contraction, which may also cause abnormal noise or impair the smoothness of its operation (No. 10).
(see figure).

Taking these circumstances into consideration, the present invention aims to improve assembly ease and prevent abnormal noise.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a hollow knob casing that is assembled into the window frame of an automobile door so that it can be pushed and pulled up. The inner knob is connected to the upper end of the link connected to the door lock device and housed so as to be movable in the vertical direction, and a return spring that biases the knob casing downward is incorporated, and is attached to the knob casing. The door locking knob is of a type in which the door lock can be released only when the inner knob is engaged by pressing the knob button, the door locking knob having a base portion that allows the inner knob to be engaged with the knob button, From this base part, the extension part around which the return spring is wound extends at least to a position facing the opening surface of the lower end of the knob casing.

(Function) Therefore, according to the above configuration, when the link is assembled to the inner knob, since the extension part looks into the opening surface of the knob casing,
This task becomes easier. In addition, when the knob casing is pulled up and the return spring is compressed and deformed, the spring can be deformed while being guided by the extension, so that the spring operates smoothly and
It does not cause any abnormal noises due to catching.

(Example) Hereinafter, an example embodying the present invention will be described in detail with reference to the drawings.

1 to 5 show a first embodiment of the present invention.

In the first embodiment, the locking knob K is attached to the window frame of the door. A frame-shaped bezel 1 is fitted into the window frame, and a locking knob K is inserted into the window frame.
The knob casing 2 is vertically pulled up into the door panel P through this bezel 1,
It is inserted so that it can be pushed in. In order to prevent the knob casing 2 from falling off, two anti-falling pieces 3 are protruded from each of the left and right sides of the lower part of the knob casing 2.
When it is pulled out, it is hooked on the opening edge of the bezel 1.

The entire knob casing 2 is formed into a rectangular tube shape, and the upper part thereof bulges toward the indoor side.
A window 5 for assembling the knob button 4 is opened in the front of this bulging portion. In addition, at the upper part of the knob casing 2, an insertion recess 6 for assembling the knob button 4 is provided with a predetermined distance between it and the head of the knob casing 2, while the overhanging piece 7 is directed toward the window 5. It is formed horizontally. The tip of this projecting piece 7 is chamfered and serves as a guide surface 8 when the knob button 4 is attached.

The knob button 4 is integrally formed with an operating piece 9 for pressing operation and a mounting piece 10 for mounting.
The operating piece 9 is formed into a rectangular shape that can fit into the window portion 5, and can be deformed from the boundary with the mounting piece 10 during a pressing operation. can be engaged with. The distal end of the attachment piece 10 is folded back into a horizontal U-shape and serves as a spring portion 13 that can be elastically engaged with the insertion recess 6.

On the other hand, the base of the overhanging piece 7 is connected to the knob casing 2.
Inner knob 1
1 as a stopper surface 14.

The inner knob 11 is inserted from the bottom surface of the knob casing 2 and is housed in a vertically movable state. This inner knob 11 consists of a base portion 11a and a cylindrical extension portion 11b formed at the bottom thereof.

A receiving surface 15 is formed on the upper surface of the base portion 11a in parallel with the stopper surface 14 of the knob casing 2.
A sheet-like cushion material 16 is pasted here. Further, a step portion 12 is formed in the front surface of the base portion 11a, and a locking edge 17 can be locked there by pushing the knob button 4.

The extension part 11b is coaxial with the base part 11a and extends downward. The length of this extension part 11b is such that its lower end is substantially flush with a cover plate 18, which will be described later, when the cushion material 16 is in contact with the stopper surface 14.

Note that the clearances between the knob casing 2 and the extension part 11b and between the extension part 11b and the link 19 are each set to be sufficiently small. Further, from the bottom surface of the extension part 11b, the link 19
An insertion hole 20 is open to a predetermined depth in the base portion 11a, and the link 19 is inserted through the insertion hole 20 and attached to the base portion 11a side by screwing.

The link 19 is connected to a door lock device built into the door panel P, and the door can be unlocked and locked by raising and lowering the link.

A return spring 21 is wound around the extension part 11b, and is interposed between the lower surface of the extension part 11b and the cover plate 18, and biases the knob casing 2 in a downward direction. As a result, the stopper surface 14 and
The inner knob 11 is always in pressure contact with the inner knob 11 via the cushion material 16. In this way, rattling of the inner knob 11 in the vertical and horizontal directions is restricted.

The cover plate 18 closes the lower surface of the knob casing 2. This cover plate 18 includes a link 19 and an extension part 1.
A through hole 22 is provided through which the lower end of 1b can pass. Further, each of the lid plates 18 has a pair of locking pieces 23 that are elastically deformable. Each has a concave protrusion 24 formed on the lower side of each retaining piece 3 on both left and right wall surfaces of the knob casing 2.
It engages with the locking hole 25 opened in the valley from the inside. Here, since the cover plate 18 receives the downward bending force due to the spring force of the return spring 21, it is necessary to prevent the locking piece 23 from coming off. For this reason, in this example, a total of four regulating pieces 26 are provided upright from the outer edge of the cover plate 18 on both sides of both locking pieces 23, and on the outer surface of the knob casing 2 on both sides of the protruding pieces 24. I try to keep close contact with them. This restricts the deflection of the cover plate 18.

The first embodiment is formed as described above. First, we will explain what happens when the door is illegally opened in the locked state shown in FIG.

In this locked state, the locking edge 1 of the knob button 4
7 is not engaged with the inner knob 11, so the inner knob 11 is free. Therefore, by unauthorized means, the knob casing 2
Even if the knob casing 2 is lifted, only the knob casing 2 is lifted against the return spring 21 (state in FIG. 3).
In other words, the inner knob 11 is left in its original position, so that the door is still held locked. In other words, illegal lock release ends up in vain.

In addition, as shown in FIG. 3 above, the return spring 2
1 is compressed, the extension portion 11b serves as a guide during this compressive deformation, so that the operation can be performed smoothly. At the same time, the occurrence of abnormal noise caused by the return spring 21 being caught is also prevented.

To release the lock normally, first push in the knob button 4, and then push the locking edge 17 into the inner knob 1.
1 to engage with the stepped portion 12 of No. 1. Then, if you lift up the knob casing 2, the inner knob 11
Since the two doors are pulled up simultaneously, a door lock device (not shown) is unlocked by lifting the link 19 (see FIGS. 4 and 5).

In addition, when locking the door, the entire knob casing 2 is pushed down so that the stopper surface 14 presses the head of the inner knob 11, so that the door lock device is locked by lowering the link 19. do.

By the way, in this example, the extension part 11b of the inner knob 11 is extended so that it can be seen from the cover plate 18. Therefore, unlike the conventional method in which the link 19 has to be screwed in by fumbling, the extension part 11
Since b acts as a guide during insertion, the assembly work becomes easy. As this eliminates the fumbling screw-in work, the clearance for inserting the link 19 can be reduced, thereby controlling rattling and preventing the occurrence of abnormal noises. Contribute to

The extension 11 b may be set to a length such that it protrudes from the substrate 18 .

6 and 7 show a second embodiment of the present invention.

The second embodiment is the same as the first embodiment, with the addition of means for restricting deformation (permanent deformation) of the knob button 4. That is, in the state of the first embodiment shown in FIG. 3 (the inner knob 11 is left as it is and only the knob casing 2 is lifted), if the operating piece 9 of the knob button 4 is pressed more than necessary, the operation will be disabled. Since there is nothing to restrict the deformation of the piece 9, there is a risk that the operation piece 9 will deform beyond its elastic limit. The second embodiment is particularly aimed at solving this problem.

Specifically, a stopper piece 27 is provided at the tip of the overhanging piece 7, thereby regulating the amount of deformation of the knob button 4. The stopper piece 27 has a hanging piece 28 that is integrally suspended from the lower surface of the tip of the overhanging piece 7.
A pair of abutting pieces 29 are provided on both sides of 8 so as to protrude vertically and toward the front. Further, both abutting pieces 29 are formed such that their front edges gradually protrude toward the center, and a reinforcing piece 30 is horizontally interposed between them.

The above points are different from the first embodiment, and the other configurations are the same, so they will not be described.

Now, in the second embodiment, similarly to the first embodiment, it is possible to prevent locking, its release, and unlocking due to fraudulent acts. Second
In addition to the above effects, the embodiment has the effect of preventing permanent deformation of the knob button 4 as described above. That is, if the knob button 4 is accidentally pushed in with more force than necessary when only the knob casing 2 is lifted, the operating piece 9 will hit the stopper piece 27 when it is deformed by a certain amount. This prevents the knob button 4 from being deformed beyond its elastic limit. Therefore, malfunction caused by permanent deformation of the knob button 4 can be eliminated.

(Effects of the invention) As is clear from the above description, the invention is characterized in that the extension portion of the inner knob extends at least to a position facing the opening surface of the knob casing. Therefore, link connection work becomes easier.
Additionally, since the clearances of the knob casing, extension, and link can be set small, rattling can be prevented and abnormal noises can be prevented. Furthermore, since the extension portion serves as a guide for the deformation of the return spring, the spring operates smoothly.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention, and FIG. 1 is a sectional view showing a locked state;
Fig. 2 is an exploded perspective view, Fig. 3 is a sectional view showing a state in which an attempt is made to illegally unlock the door, and Figs. 4 and 5 are sectional views each showing the case in which the door is properly unlocked. , FIG. 6 and FIG. 7 show a second embodiment of the present invention, and FIG. 6 is a sectional view showing the state in which the knob button is pulled up when an attempt is made to illegally unlock the door. 7th
The figure is a perspective view showing the main parts of the knob casing, and FIGS. 8 to 10 are sectional views for explaining the problems of the prior art, respectively. 2...Knob casing, 4...Knob button, 1
1...Inner knob, 11a...Base, 11b...
...Extension part, 19...Link, 21...Return spring.

Claims (1)

[Scope of utility model registration request] The upper end of the link connected to the door lock device is connected to the inside of the hollow knob casing, which is assembled into the window frame of a car door so that it can be pushed and pulled up, and is housed so that it can be displaced in the vertical direction. The inner knob and the return spring that biases the knob casing downward are incorporated.
A door locking knob of a type in which the door lock can be released only when an inner knob is engaged by pressing a knob button attached to a knob casing, the knob button being able to engage the inner knob. A door locking knob for an automobile, characterized in that a base is provided, and an extension part around which the return spring is wound extends from the base to at least a position facing an opening surface at a lower end of the knob casing.