KR0123734Y1 - Knob for car audio - Google Patents

Abstract

The present invention is improved to enable accurate switch operation by turning on and off the switch mounted on the PCB board inside the car audio by an elastic member coupled by a plurality of fitting protrusions and grooves. To a knob for a car audio. The present invention operates the switch contact of the PCB substrate by pressing the elastic member by pressing the elastic member on the elastic member of the square frame connected to the front decorative cover, so that the nozzle body portion can be returned to its original position accurately after the pressing process. .

Therefore, the contact point of the switch continues to make fun of the effect that the problem is solved.

Description

Knob for Car Audio

1 is an exploded perspective view of a knob for a conventional car audio.

2 is a cross-sectional view of a conventional car audio knob.

3 is a perspective view of a car audio knob and a front decorative cover of the present invention.

4 is a front view of a front decorative cover to which the knob for car audio of the present invention is mounted.

FIG. 5 is a cross-sectional view taken along line AA 'of the front decorative cover of FIG.

6 is a cross-sectional view of the combination of the car audio knob of the present invention is mounted on the front decorative cover.

* Explanation of symbols for main parts of the drawings

5: square frame 7a, 7b: leg

9a, 9b: Jamming protrusion 12: Pushing jaw

16: groove groove 20: elastic member

30: knob body portion 32a, 32b: connection flange

34a, 34b: hole 37: protruding jaw

38a, 38b: fitting protrusion 40: guide protrusion

110: ESCUTCHEON COVER

120: PCB substrate 124: switch

125a: contact

The present invention relates to a knob for manipulating a cassette tape in a car audio of a car or selecting a channel such as a radio. More specifically, the knob is coupled by a plurality of fitting protrusions and grooves. The present invention relates to a knob for a car audio (Knob), which enables an accurate switch operation by turning on and off a switch mounted on a PCB board inside a car audio by an elastic member.

In general, a plurality of knobs for car audio are mounted on an ESCUTCHEON COVER 110 in a car audio installed in a driver's front console so that the user can operate the cassette tape externally by pressing the knob. Or select a radio channel or the like.

In a conventional car audio knob related to such a technique, as illustrated in FIGS. 1 and 2, a PCB substrate 120 is mounted inside a car audio, and the PCB substrate 120 is provided. A switch 125 is mounted thereon, and the contact 125a of the switch 125 is disposed toward the front decorative cover 110 of the car audio, while the user contacts the butt 125a of the switch 125. From the outside, the knob 100 is pressed to turn it on and off.

In such a conventional car audio knob 100, a pair of opposing connecting flanges 104a and 104b are formed on the rear side of the body portion 102, and each of the connecting flanges 104a and 104b is a source string. Holes 106a and 106b are formed, and protrusions 114a and 114b formed on both sides of the knob mounting space 112 of the front decorative cover 110 are inserted into the holes 106a and 106b, respectively. 100 is rotatably connected to the front decorative cover (110).

In addition, between the connecting flanges 104a and 104b, a switch push rod 108 extending rearward from the body portion 102 is positioned, and an inner end 108a of the switch push rod 108 is It is close to the contact 125a of the switch 125, and the distance d from the contact 125a is approximately 0.2 to 0.4 mm.

When the conventional knob for car audio 100 as described above is extended from the solid line state of FIG. 2 to the dotted line state, the body portion 102 is the protrusions 114a and 114b coupled to the connecting flanges 104a and 104b. Rotating in a clockwise direction with respect to the end of the switch pressing rod 108, the end 108a presses the contact point 125a of the switch 125, and the user presses the hand from the body portion 102 while the switch pressing is completed. When it is removed, the body portion 102 and the switch pressing rod 108 are rotated counterclockwise around the protrusions 114a and 114b by their own weight to return to the solid state.

However, in the conventional carody knob 100 as described above, as shown in FIGS. 1 and 2, the knob body portion 102 and the switch pressing rod 108 are connected to the flange portion 104a. (04b) is a structure that is suspended so as to be rotatable on the projections (114a, 114b) of the front decorative cover 110, and because the switch push rod 108 is not provided with a separate knob 100, the contact ( If the user releases the hand after pressing 125a), the knob 100 does not return to the original position and the contact point 125a of the switch 125 is continuously pressed. Thus, the accuracy and reliability of the operation of the switch 125 are deteriorated. There were problems.

The present invention has been made to solve the problems caused by the conventional knob for car audio as described above, the purpose of which is to return to the original position after the completion of the pressing operation of the knob body through the elastic member is correct, of course, in particular to improve the operability Due to the simple structure in which the locking jaw formed on the leg portion of the elastic member is caught by the connection flange of the knob body portion, the manufacturing and installation work of the knob is simplified, while the protrusion projection and the fitting protrusion of the knob body portion press the elastic member. It is to provide a knob for car audio that is convenient to use by minimizing the occurrence of malfunction when the knob is pressed by being pushed while being inserted into the jaw recess and the guide hole.

As a technical means for achieving the above object, the present invention is mounted on the front decorative cover of the car audio, so as to operate elastically at the upper edge of the square frame formed in the knob mounting space of the front decorative cover to operate the switch contact inside the car audio. In the car audio knob that the knob body portion is pushed to the elastic member formed in the pressing jaw is formed in the lower portion of the lower portion of the plurality of legs extending downward, wherein the back of the pressing jaw is pressed in contact with the switch contact of the PCB The rod protrudes, and the front of the pressing jaw is formed with a groove having a guide hole formed at the center thereof, and each of the outer shafts of the leg portion of the elastic member is formed with a locking protrusion which is fitted into the hole of the connection flange installed on the inner wall of the knob body. Between the connecting flange, a switch push rod is connected to the switch of the PCB The knob for a car audio to be pushed to give place to the configuration in which the protruding jaw recess and the urine guide protrusion to the fitting projection and the center thereof is inserted into the groove of the guide hole of the pressing jaws are respectively mounted on the rear side is formed by maryeonham.

Hereinafter, the configuration according to the accompanying drawings of the present invention in detail as follows.

FIG. 3 is a perspective view of the car audio knob and front decorative cover of the present invention, and FIG. 4 is a front view of the front decorative cover to which the knob for car audio of the present invention is mounted, and FIG. 5 is the front decorative cover shown in FIG. A-A 'is a cross-sectional view of Figure 6 is a combined cross-sectional view of the car audio knob of the present invention mounted on the front decorative cover.

The present invention forms a square frame (5) on the knob mounting space 112 of the front decorative cover 110, the plurality of legs (7a) in the lower side in the upper corner (5a) of the square frame (5) 7b are formed to extend at regular intervals, and engaging projections 9a and 9b are formed at both outer center portions of the leg portions 7a and 7b, respectively.

Incidentally, inclined surfaces 10a and 10b are formed at end portions of the engaging protrusions 9a and 9b, respectively, and lower jaws 12 at the lower ends of the leg portions 7a and 7b inside the rectangular frame 5. Is formed so that the leg portions 7a and 7b are connected to each other, and the switch push rod 15 having a cylindrical shape is formed at the rear of the pressing jaw 12 toward the switch contact 125a of the PCB substrate 120. It is integrally formed to protrude.

In addition, the pressing jaw 12 connected to the square frame 5 through the leg portions 7a and 7b forms an elastic member 20 that can be moved back and forth elastically, and the pressing jaw 12 In the front side of the concave groove portion 16 is formed in the center portion, the guide hole 16a is integrally formed in the center of the groove portion 16.

Meanwhile, a pair of connecting flanges 32a and 32b are formed toward the elastic member 20 so that the locking protrusions 9a and 9b of the elastic member 20 are fitted to the knob body 30. Holes 34a and 34b are formed in the center of the connecting flanges 32a and 32b, and the inclined surfaces 35a and 35b are formed at the ends of the connecting flanges 32a and 32b. ) Are formed respectively.

In addition, a protruding jaw 37 is formed between the connecting flanges 32a and 32b at an opposing position of the pressing jaw 12, and the front side of the protruding jaw 37 of the pressing jaw 12 is formed. A pair of fitting protrusions 38a and 38b fitted into the groove 16 are formed, and between the fitting protrusions 38a and 38b, a cylindrical shape is inserted into the guide hole 16a of the pressing jaw 12. Guide protrusion 40 is made of a configuration that is formed.

Referring to the operation according to an embodiment of the present invention based on the above-described configuration in detail as follows.

As shown in FIGS. 3 to 6, when the knob body portion 30 is coupled to the knob mounting space 112 of the front decorative cover 10, the holes () of the connecting flanges 32a and 32b may be used. The locking projections 9a and 9b of the leg portions 7a and 7b are fitted into the 34a and 34b, respectively, and are positioned to surround the nozzle body portion 30 to the outside of the quadrangular frame 5, and the protruding jaw. The fitting protrusions 38a and 38b of the 37 and the guide protrusions 40 are fitted between the recessed portions 16 and the guide holes 16a of the pressing jaw 12, respectively.

Accordingly, the connecting flange 32a of the knob body portion 30 is formed by forming the catching portions 9a and 9b on the leg portions 7a and 7b without installing a separate coupling piece to the elastic member 20. Due to the simple structure fixed at 32b, the manufacturing and installation of the knob is simplified.

On the other hand, the elastic member 20 and the nozzle body portion 30, respectively, through the connecting flange (32a) and 32b and the engaging projection (9a) (9b), and also the groove portion 16 of the pressing jaw (12) The protrusions 37 are integrally coupled to each of the protrusions 38a, 38b, and 40, and at this time, one side and the hole of the locking protrusions 9a and 9b fitted into the holes 34a and 34b. A space s is formed between one side of the sides 34a and 34b, and the width w of the space s is the distance between the contact 125a of the switch 125 and the switch push rod 15. greater than d).

Therefore, when the user presses the front surface of the nozzle body portion 30, this means that the locking projections 9a and 9b are movable in the width W direction of the space S, respectively, and the projection jaw 37 is fitted. The projections 38a and 38b and the guide projections 40 respectively push the push jaw 12 toward the switch contact point 125a, so that the legs 7a and 7b are bent in a cantilever shape and elastically. The switch pressing rod 15 of the pressing jaw 12 comes in contact with the contact 125a of the switch 125 to be turned on.

In addition, the knob body 30 is coupled to the elastic member 20 of the square frame 5 connected to the front decorative cover 110 to press the elastic member 20 to switch contact of the PCB substrate 120 ( Since 125a) is operated, the nozzle body 30 can be returned to its original position accurately after pressing. Therefore, the problem that the contact 125a of the switch 125 continues to increase is eliminated.

Further, the projections 38a, 38b, 40 of the protruding jaw 37 of the nodular body portion 30 are formed in the groove 16 and the guide hole 16a formed in the pressing jaw 12 of the elastic member 20. Since they are coupled to the knob body portion 30 on the front decorative cover 110 in a more stable state, it is convenient to use to minimize the occurrence of malfunction during the pressing operation of the knob (1).

According to the knob for car audio according to the present invention, the return of the home body after the pressing operation of the knob body is completed correctly through the elastic member to improve the operability, and in particular, the locking jaw formed on the leg portion of the elastic member Due to the simple structure that is secured by the connection flange, the manufacturing and installation of the knob is simplified, while the protruding jaw guide protrusion and the fitting protrusion of the knob body are pressed into the push jaw groove and the guide hole of the elastic member, thereby being pressed. It is convenient to use because it minimizes the occurrence of malfunction when pressing the knob.

Claims (1)

It is mounted on the front decorative cover 110 of the car audio and downward to elastically operate at the upper edge of the square frame 5 formed in the knob mounting space 112 of the front decorative cover 110 to operate the internal switch contact 125a. To the knob 1 for car audio in which the knob body 30 is pushed to the elastic member 20 in which the pressing jaw 12 is formed under the plurality of leg portions 7a and 7b extending to the lower portion. In this case, the push bar 15 which is in contact with the switch contact 125a of the PCB 20 is protruded from the rear surface of the push jaw 12, and the guide hole 16a is formed at the center of the front of the push jaw 12. The groove 16 to be formed is formed, and on both outer shafts of the legs 7a and 7b of the elastic member 20, connection flanges 32a and 32b provided on the inner wall surface of the knob body portion 30 are formed. Engaging projections 9a and 9b which are inserted into and fixed to the holes are formed, respectively, and the switch pressing rod 15 is avoided between the connecting flanges 32a and 32b. Pushes toward the switch contact 125a side of the CBI substrate 120 and guides to the center of the fitting projections 38a and 38b inserted into the recess 16 and the guide hole 16a of the pusher 12. The knob for car audio, characterized in that the protrusion 40 is made of a configuration in which the projection jaw (37) that is respectively installed on the rear.