JPH0523722Y2 - - 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 link can 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, referring to FIG. 10,
This device houses an inner knob 41 connected to a link 40 inside. When trying to unlock the door, the door cannot be operated unless both knob buttons 42 are pinched to pinch the inner knob 41 and make them one unit.

However, in this structure in which the spring 43 is incorporated into the knob button 42, the structure of the knob becomes complicated and the assembly work is time-consuming.

Based on this, in order to omit the spring,
Some knob buttons 42 themselves have spring properties to simplify the configuration. This example is shown in FIGS. 11 to 13. In this example, the operating piece 45 of the knob button 44 is flexibly deformed.

That is, the knob button 44 is integrally formed of a thin metal plate material, and the thickness a of the entire mounting piece 46 in its natural state is made larger than the height of the insertion recess 47. As a result, the attachment piece 46 is pushed in while being compressed and deformed, and is prevented from coming off by the retaining claw 48 cut and raised from the attachment piece 46.

(Problems to be Solved by the Invention) Incidentally, in the knob button 44, the above-mentioned dimension a (the amount of cut and rise of the retaining claw 48) may vary. For example, if the size is larger than the standard size, the retaining claw 48 will not easily deform, so when pushing in the mounting piece 46, the retaining claw 48 must be laid down in order to be pushed in. . Then, the mounting piece must be bent and deformed to the extent that it is laid down. Therefore, the knob button 44 is connected to the knob casing 4 at the boundary with the operation piece 45.
9 receives a large downward reaction force from the opening edge 47a of the insertion recess 47. Therefore, compared to the normal assembly state (Fig. 12 state),
The operating piece 45 deforms in a direction approaching the knob casing 49 (state in FIG. 13). In this way, manufacturing errors in the retaining claw 48 appear as assembly errors in the knob button 44. Therefore,
Depending on the degree of approach, the locking edge 50 may become caught on the inner knob 51 even before operation.

In view of these circumstances, the present invention aims to facilitate the assembly of the knob and improve the assembly accuracy.

(Means for Solving the Problems) In order to achieve the above object, the knob of the present invention is installed inside a hollow knob casing that can be pushed and pulled up against the window frame of an automobile door. The inner knob connected to the door lock device is housed so that it can be displaced in the vertical direction, and the door lock can be released only when the inner knob is engaged by pressing the knob button attached to the knob casing. type of door locking knob, wherein the knob button is integrally made up of a mounting piece that is press-fitted into an insertion recess formed in the knob casing, and an operation piece that flexes and deforms so as to be able to engage with the inner knob when pressed. At the same time, a spring portion that is allowed to be elastically deformed in the compression direction upon insertion is formed by folding back into a U-shape at the free end side of the attachment piece.

(Function) Therefore, according to the above configuration, when assembling the knob button to the knob casing, the mounting piece is inserted and press-fitted into the recess. Then, the spring portion is pushed into the insertion recess while being compressed, and is held within the recess by its elastic force. In this case, even if the push-back width of the spring part varies and the thickness of the spring part varies, this is absorbed by the free end side of the spring part being compressed and deformed, so there is no assembly error like in the past. This does not occur and it is possible to assemble with high precision.

(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, a pair of stopper pieces 3 protrude from the lower part of the knob casing 2, so that the knob casing 2 is caught on the opening edge of the bezel 1 when the knob casing 2 is pulled out. The entire knob casing 2 is formed into a rectangular tube shape, and the lower surface is open. The inner knob 4 is inserted from here and stored in a vertically movable state. Also,
The lower surface of the knob casing 2 is closed by a cover plate 5. The cover plate 5 has a pair of locking pieces 6, and is fixed by engaging the locking pieces 6 in respective grooves 7 formed on both sides of the casing 2.

A link 8 from a door lock device (not shown) built into the door panel P is screwed into the inner knob 4 through the cover plate 5 to a predetermined depth. Here, the door lock device is constructed such that the door is unlocked and locked by raising and lowering the link 8. Further, a return spring 9 is interposed between the inner knob 4 and the cover plate 5. The upper part of the return spring 9 is fitted into a cylindrical part 10 formed at the lower part of the inner knob 4. Then, it acts in a direction to push down the knob casing 2.

On the other hand, the upper side of the knob casing 2 bulges out toward the indoor side, and a window 12 for assembling the knob button 11 is opened in the front of this bulge. A projecting piece 13 is formed horizontally at the upper part of the knob casing 2 so as to face the window 12. The tip edge of this overhanging piece 13 is chamfered to serve as a guide surface 13a when the knob button 11 is attached. Also, overhang piece 1
A stopper surface 14 is formed at the base of the knob casing 3 as an inclined surface toward the back surface of the knob casing 2.
On the other hand, a receiving surface 15 is formed on the upper surface of the inner knob 4 in parallel to the stopper surface 14 described above. A sheet-like cushion material 16 is pasted here. As described above, since the entire knob casing 2 is pressed down by the return spring 9, the stopper surface 14 and the inner knob 4 are always in pressure contact with each other via the cushion material 16. In this way, rattling of the inner knob 4 in the vertical and horizontal directions is restricted.

Moreover, this projecting piece 13 is attached to the knob casing 2.
A predetermined gap is formed between the rear surface and the top surface of the knob button 11, respectively, and the knob button 11 is attached using the gap (insertion recess 17) between the top surface and the top surface.

Here, the knob button 11 is integrally formed with an operating piece 18 for pressing operation and a mounting piece 19 for mounting. The operating piece 18 is formed into a rectangular shape that can fit into the window portion 12, and its peripheral edge is bent inward at right angles. During the pressing operation, the connecting portion with the mounting piece 19 can be bent and deformed, and the locking edge 20 folded back at the lower end is engaged with the stepped portion 21 recessed in the opposing surface of the inner knob 4. be able to.

On the other hand, the mounting piece 19 is narrower than the operating piece 18 and extends integrally from the center of the upper edge of the operating piece 18 . The base side is formed into a gentle wave shape, but the tip side is folded downward into a U-shape, so that the spring portion 22
is formed. Further, the free end of the spring portion 22 is further bent downward to form a retaining pawl 23, which extends against the bottom surface of the insertion recess 17. Note that the thickness of the spring portion 22 in its natural state is larger than the height of the insertion recess 17, and therefore, as it is pushed into the insertion recess 17, it is elastically deformed in the compression direction.

The first embodiment is constructed as described above. First, the operation when an attempt is made to open the door illegally in the locked state shown in FIG.

In this locked state, the locking edge 20 of the knob button 11 is not engaged with the inner knob 4, so the inner knob 4 is free. Therefore, even if the knob casing 2 is lifted by an unauthorized method, only the knob casing 2 will be lifted against the return spring 9 (state in FIG. 3). In other words,
Since the inner knob 4 is left in its original position, the door will still be held locked.
In other words, illegal lock release ends up in vain.

To properly release the lock, first push in the knob button 11 to engage the locking edge 20 with the stepped portion 21 of the inner knob 4. If the knob casing 2 is lifted in this state, the inner knob 4 will be pulled up simultaneously, so the link 8
The door lock device (not shown) is unlocked by the rise of the door lock (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 4, so that the door lock device is locked by lowering the link 8. do.

By the way, in the knob of this example, the knob button 11
When assembling, the front side of the operating piece 18 is pressed with a finger, and the mounting piece 19 is press-fitted into the insertion recess 17 of the knob casing 2. Along with this press-fitting, the folded base (arc-shaped part) of the spring part 22 is inserted, and when the retaining claw 23 comes to touch the lower surface of the insertion recess 17, the retaining claw 23 is elastically moved in the direction of collapse. Due to the deformation, the entire spring portion 22 is deformed, particularly in the range from the center of the folded base portion to the tip of the retaining pawl 23 (range from A to B shown in FIG. 1).
Therefore, the deformation of the knob button 11 due to the press-fitting of the attachment piece 19 remains within the above-mentioned range, and unlike the conventional case, does not affect the operation piece 18 side. Therefore, even if the thickness of the mounting piece 19 varies due to manufacturing, there is almost no variation during assembly. Therefore, after installation, the knob button 11 can be operated smoothly and reliably.

6 and 7 both 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 11. That is, in the state of the first embodiment shown in FIG. 3 (the inner knob 4 is left as it is and only the knob casing 2 is lifted), if the operating piece 18 of the knob button 11 is pressed more than necessary, the operation will be disabled. Since there is nothing to restrict the deformation of the piece 18, there is a risk that the operation piece 18 will deform beyond its elastic limit. The second embodiment is intended to solve this problem as well.

Specifically, a stopper piece 24 is provided at the tip of the overhanging piece 13, thereby regulating the amount of deformation of the knob button 11. The stopper piece 24 has a hanging piece 25 that is integrally suspended from the lower surface of the tip of the overhanging piece 13, and on both sides of the hanging piece 25, a pair of regulating pieces 26 are arranged vertically and facing forward. They are provided so that they stick out from each other. Further, both regulating pieces 26 are formed such that their front edges gradually protrude toward the center, and a reinforcing piece 27 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 can prevent permanent deformation of the knob button 11. That is, if the knob button 11 is accidentally pressed with more force than necessary while the inner knob 4 remains as it is and only the knob casing 2 is lifted, the operating piece 18 will deform by a certain amount and then hit the stopper piece 24. This prevents the knob button 11 from being deformed beyond its elastic limit. Therefore, malfunctions caused by permanent deformation of the knob button 11 can be eliminated.

8 and 9 show a third embodiment of the present invention. In the third embodiment, the knob button 11 is attached to the upper surface of the knob casing 2.

First, to explain the structure, the lower part of the knob casing 2 is narrowed from both left and right sides to form a rectangular tube part 28. Further, a pair of retaining pieces 3 that are allowed to be elastically deformed inward are formed on the opposing side surfaces. Further, a return spring 9 is attached to this square tube portion 28, and is pressed against the bezel 1 and the retaining piece 3 to bias the knob casing 2 as a whole in a downward direction.

The inner knob 4 is housed in the knob casing 2 in a vertically movable state, and a link 8 is screwed into the inner knob 4. Further, a stepped portion 21 is formed at the upper part of the front surface of the inner knob 4, and the top of the inner knob 4 has a hook shape. Further, the top of the knob casing 2 is formed so that the knob button 11 can be placed thereon. An insertion recess 17 extends vertically through the top surface of the knob casing 2, and allows a mounting piece 19 of the knob button 11 to be press-fitted therein. Further, a stopper piece 24 is integrally protruded from the top of the knob casing 2 on the side surface facing the operation piece 18 of the knob button 2.
As in the second embodiment, permanent deformation of the knob button 11 is restricted.

Note that the other configurations are the same as those of the previously described embodiments,
However, similar effects can be achieved.

(Effects of the invention) As explained above, the present invention has a U-shaped spring portion that is allowed to be elastically deformed in the compression direction when inserted, on the free end side of the mounting piece of the knob button. This is a characteristic feature. Therefore, when assembled to the knob casing, the spring portion is pushed into the insertion recess while being compressed. In this case, even if the folded width of the spring part varies and the thickness of the spring part varies, this is absorbed by the free end of the spring part being compressed and deformed, making it possible to assemble the knob button with high precision. becomes.

[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 cross-sectional view showing the state in which the knob button is pushed in when an attempt is made to illegally unlock the door. Fig. 7 is a perspective view of the knob casing, Figs. 8 and 9 show the third embodiment of the present invention, Fig. 8 is a sectional view showing the assembled state, and Fig. 9 is an exploded view of the knob. A perspective view, FIG. 10 is a sectional view of a conventional knob, and FIGS. 11 to 13 show other conventional knobs.
FIG. 11 is a cross-sectional view showing the assembled state, and FIGS. 12 and 13 are cross-sectional views showing the assembled state of the knob button. 2...Knob casing, 4...Inner knob,
9... Return spring, 11... Knob button, 17...
Insertion recess, 18...operating piece, 19...attachment piece, 22...spring part, 23...retaining claw.

Claims (1)

[Scope of utility model registration request] An inner knob connected to a door lock device is housed inside a hollow knob casing that can be pushed and pulled up against the window frame of an automobile door, and is movable in the vertical direction. The door locking knob is of a type in which the door lock can be released only when an inner knob is engaged by pressing an attached knob button, and the knob button is press-fitted into an insertion recess formed in a knob casing. a mounting piece;
It is integrally formed with an operation piece that flexibly deforms so as to be able to engage with the inner knob when pressed, and the free end side end of the attachment piece is allowed to elastically deform in the compression direction when inserted. A door locking knob for an automobile, characterized in that a spring part is folded back into a U-shape.