JPS6230486Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a push button used, for example, in a controller of an air conditioner for an automobile.

(Prior Art) In general, a controller 1 for an air conditioner for an automobile has a finisher 3 erected in front of a base plate 2 as shown in FIG. 1, and various switches such as a defrost switch ( DEF), internal air circulation switch (REC), heating switch (FLOOR), cold air blowout switch (VENT), air conditioner start switch (A/C), and operation dials 4 and 5.

Recently, a push button is often used for this switch due to its ease of operation.The push button can be operated by pressing the synthetic resin control knob 6 on which the mode is displayed. The switch is moved backward to operate a predetermined switch.

(Problem to be solved by the invention) However, in the conventional push button, a recess is formed inside the control knob 6 made of synthetic resin and has a U-shaped cross section. The control knob 6 is attached to this operation stick by inserting it so that the locking part formed on the side is engaged, and the control knob 6 and the operation stick inserted and connected to it are simply the operation stick. It is only a part of the insertion part that is fitted in a concave and convex manner.

For this reason, if the fitting part of the concave and convex parts loosens while the push button is in use, the control knob 6 tends to become loose. If the fitting is made stiffer, there is an inconvenience that the work of attaching the control knob 6 to the operating rod becomes troublesome.

The present invention was made to solve the drawbacks and problems associated with the conventional technology mentioned above.The operating stick can be easily inserted into the control knob, is difficult to remove, and the fitting state between the two is fixed during use. It is an object of the present invention to provide a push button which allows the fitted state to be easily corrected by loosening it.

[Structure of the idea]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a recess formed inside a synthetic resin control knob having a U-shaped cross section, and an insertion portion 14 on the inner wall of the recess. In a push button formed by inserting an operating rod which is engaged with a locking portion formed on an outer surface thereof, the insertion portion of the operating rod is bifurcated by forming a slit of a predetermined length, The locking portion formed on the outer surface of the insertion portion is formed in a sawtooth shape with a plurality of reversed edges, and the locking portion is formed at the end of the slit to weaken the rigidity of the bifurcated insertion portion and facilitate expansion. It is characterized by having a cutout section formed to allow the user to remove the cutout.

(Function) In this way, with the present invention, simply by pushing the insertion part of the operating stick into the recess of the control knob, the plurality of teeth bite into the inner wall of the recess, so that it will not come loose during use, and even if it becomes loose, the cut part will be removed. If you use this to expand the slit in the insertion part, you can reattach the control knob to the operating stick without any play.

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

FIG. 2 shows the push button according to the present invention before assembly, and FIGS. 3 and 4 are enlarged views of the insertion portion of the operating rod.

Control knob 1 of this pushbutton 10
Reference numeral 1 is made of synthetic resin and has a U-shaped cross section, and a recess 13 into which an operating rod 12, which will be described later, is inserted is formed inside. Also on the front is the aforementioned "DEF"
A mode display such as "REC" is displayed.

On the other hand, the operating rod 12 that fits into the control knob 11 is made of metal, and the insertion portion 14 at the tip is
A slit 15 of a predetermined length is formed to bifurcate the insertion portion 14, and the outer surface of the insertion portion 14 has a length S that is approximately the same as the inner wall 13a of the recess 13.
and a width l slightly larger than the width d of the recess 13.
A plurality of sawtooth-shaped locking portions 16 are formed to lock the operating rod 12 to the control knob 11 in a manner that prevents it from coming off.

As is clear from FIGS. 3 and 4, the teeth of this locking portion 16 are reversed so that once the operating rod 12 is inserted into the recess 13 of the control knob 11, it is difficult to come out.

Further, at the terminal end of the slit 15, a cutout part 17 is formed to weaken the rigidity of the insertion part 14 and to easily expand the bifurcated insertion part 14. The slit 15 formed in the insertion portion 14 is made wider as it goes toward the tip, and a cutout portion 17, which is a large diameter hole, is formed at the base end of the slit 15, so that the control knob 11 and When the fitting state with the operating rod 12 becomes loose, this slit 15 can be easily expanded, so that the engagement between the inner wall 13a and the locking part 16 can be made firm again.

In this way, the control knob 11
When inserting the operating stick 12 into the machine, it is easy to insert it and the operating stick 12 can be inserted easily.If the control knob 11 is loosened after insertion, the control knob 11 can be pulled out and the operating stick The width l of the slit 15 can be easily expanded by inserting a suitable tool such as a screwdriver into the slit 15 of the control knob 1.
This makes it possible to prevent backlash between 1 and the operation stick 12.

Note that in FIG. 2, the reference numeral ``18'' is a raised protrusion, which is used to press a switch or the like.

Furthermore, the toothed portions of the above-mentioned sawtooth locking portion 14 may be bent as shown in FIG. 5A, or may be bent alternately like the serrations as shown in FIG. 5B. good.

By allowing the insertion portion 14 of the operating rod 12 to expand as appropriate in this way, even if the engagement between the control knob 11 and the operating rod 12 becomes loose, it is possible to easily create a tight fitting state.

[Effect of idea]

As described above, according to the present invention, the insertion portion of the operating rod is bifurcated by forming a slit of a predetermined length, and has a plurality of locking portions formed on the outer surface of the insertion portion. Formed in the shape of a sawtooth with the opposite eyes,
A cutout is formed at the end of the slit to weaken the rigidity of the bifurcated insertion portion and allow for easy expansion, thereby facilitating the initial fitting of the control knob and the operating rod. It can be held firmly and prevents loosening during use.

Furthermore, even if the engagement loosens during use, since the cutout is formed at the end of the slit, the width of the insertion section can be easily adjusted and a tight fit can be established again.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a controller for an automobile air conditioner, Fig. 2 is an explanatory diagram of a push button showing an embodiment of the present invention, Figs. 3 and 4 are enlarged views of main parts of Fig. 2; 5A and 5B are cross-sectional views showing modified examples of the sawtooth locking portion. 10...Push button, 11...Control knob, 12...Operation stick, 13...Recess, 13a
...Inner wall, 14...Insertion part, 15...Slit,
16...Locking part, 17...Removal part.

Claims (1)

[Scope of utility model registration request] Control knob 1 made of synthetic resin with a U-shaped cross section
In the push button, the operating rod 12 is inserted into a recess 13 formed inside the recess 13 so that a locking part 16 formed on the outer surface of the insertion part 14 is engaged with the inner wall 13a of the recess 13. The insertion portion 14 of the operating rod 12 is bifurcated by forming a slit 15 of a predetermined length, and the locking portion 16 formed on the outer surface of the insertion portion 14 is formed into a plurality of reversed serrations. At the end of the slit 15, there is a cutout part 17 which is cut out to weaken the rigidity of the bifurcated insertion part 14 and allow it to expand easily.
A button that forms a push button.