KR19990003027U - Knob assembly of electronics - Google Patents

Abstract

The present invention discloses a knob assembly of an electronic product. The knob assembly of the conventional electronics is easily broken when the knobs or the tact switch are damaged when the knobs are pressed by force due to user's carelessness, and the knob assembly cannot be replaced when the knob assembly is broken while the product is in use. Was the cause of complaints. In addition, since the knobs of the knob assembly are connected to the support ribs and manufactured in one combination, a malfunction occurs due to the linkage of the knobs. The present invention is provided with a front mounting groove is formed in the front, a through hole is formed in the center of the mounting groove, the engaging hole is formed on both sides of the through hole, the front panel is formed with a pair of coupling pins protruding from the lower bottom; A knob operatively installed in an installation groove of the front panel and having a push bar inserted into the through hole of the front panel at a center of the rear surface thereof, and having a snap hook formed to fit into a locking hole of the front panel; It consists of a pusher installed on the back of the front panel to operate the tact switch mounted on the top of the circuit board by the operation of the knob. Therefore, since the pusher is manufactured in a simple configuration and structure in which the pusher is individually operated by the operation of the knob, the operation position of the knob is regulated to prevent breakage and malfunction, as well as malfunction of the knob. Product reliability is improved.

Description

Knob assembly of electronics

The present invention relates to a knob assembly of an electronic product, and more particularly, to a knob assembly of an electronic product to prevent malfunction of the product to improve the reliability of the product.

In general, electronic products are equipped with various kinds of function selection knobs to set electronic functions according to their purpose. As an example of an electronic product, a video cassette recorder is used. Modes such as power, play, eject, review, and the like are performed by manipulation of the function selection knob by the user.

As an example of such an electronic product, as shown in FIG. 1, a video cassette recorder (VCR) is equipped with a front panel (Fp) on the front of a body (Bo), and the front panel (Fp). A plurality of knob assemblies Ka are mounted thereon. Thus, the user can perform various functions of the video cassette recorder VCR by operating the knob assembly Ka.

On the other hand, the video cassette recorder (VCR) has been developed a so-called one type circuit board (one type circuit board) constituting an electronic circuit using a circuit board (Cb) installed on the bottom of the main body (Bo).

As shown in FIGS. 2A and 2B, the knob assembly 10 of the conventional electronic appliance includes a plurality of knobs 11 having a support rib 13 by tension ribs 12. It is formed to be integrally connected with). A plurality of coupling holes 14 are formed in the support rib 13 of the knob assembly 10, and a pusher 15 is formed on the back of the knobs 11, respectively.

On the other hand, the video cassette recorder (VCR) is provided with an installation hole 21 to expose the knobs 11 of the knob assembly 10 on the front of the front panel 20, the knob assembly (on the back of the front panel 20) A plurality of coupling pins 22 inserted into the coupling holes 14 of the 10 are protruded.

Then, the coupling pins 22 of the front panel 20 are inserted through the coupling holes 14 of the knob assembly 10, and then the ends of the coupling pins 22 are welded, that is, melted and attached to the knobs. Assemble the assembly 10 and the front panel 20.

Accordingly, the tact switch Sw mounted on the upper surface of the circuit board Cb by the pusher 15 is pressed while the tension ribs 12 are elastically deformed according to the operation of the knobs 11. do.

However, the knob assembly of the conventional electronics as described above, when the user presses the knobs 11 in front of the front panel 20 to operate the knobs 11 or the tact switch Sw due to the carelessness of the user. There is a problem that is easily broken and the reliability of the product is greatly reduced.

That is, when the user presses the knobs 11 with excessive force, the tension ribs 12 cannot be restored to their original state after elastic deformation due to plasticity, so that the function of the knob assembly 10 is lost or structurally. Breakage of the weak tension ribs 12 will occur.

In addition, when the knobs 11 are operated with excessive force, the pusher 15 strongly presses the tact switch Sw, so that the tact switch Sw is frequently damaged. In particular, when the knob assembly 10 is damaged during the use of the product, the replacement of the knob assembly 10 is impossible, there is a problem that greatly acts as a cause of user complaints.

In addition, since the knobs 11 of the knob assembly 10 are connected to the support ribs 33 and manufactured in one combination, the other one of the knobs 11 adjacent to each other when the knobs 11 are manipulated is manipulated. There is a problem that the reliability of the product is lowered such that they are easily interlocked and malfunction occurs.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is that the operation position of the knob is regulated by a simple configuration and structure to prevent damage and malfunction, as well as interlocking the knob It is to provide a knob assembly of an electronic product to prevent malfunction due to the improved product reliability.

1 is a perspective view showing an example of a general electronic product

2A and 2B are front and cross-sectional views showing a knob assembly of a conventional electronic product.

Figure 3 is an exploded perspective view showing a knob assembly of the electronic product according to the present invention

Figure 4 is a cross-sectional view showing a knob assembly of the electronic product according to the present invention

5 is an operating state diagram of FIG.

♣ Explanation of symbols for the main parts of the drawing ♣

30; Front panel 31; Home

32; Through-holes 33a, 33b; Hanging hole

34a, 34b; Binding pin 35; Knob

36; Push bars 37a, 37b; Snap hook

40; Pusher 41; Movable plate

42; Push plate 43; Tension ribs

44; Support ribs 45a, 45b; Coupling hole

Sb; Circuit board Sw; Tack switch

In order to achieve the above object, a feature of the present invention is a knob assembly for operating a tact switch of a main circuit board to be assembled to a front panel of an electronic product so that a function is set. A front panel having a through hole formed at a center thereof, and a plurality of engaging holes formed at both sides of the through hole, respectively, and having a pair of engaging pins protruding from a lower bottom thereof; A plurality of snap hooks are operatively installed in the front panel mounting groove, and have a push bar formed at the center of the rear surface to correspond to each other through the through holes of the front panel, and are elastically deformed so as to be fitted corresponding to the locking holes of the front panel. Knobs each of which is formed; On the back of the front panel is a knob assembly of an electronic product composed of a pusher installed by welding so as to press and operate the tact switch mounted on the upper surface of the circuit board by the operation of the knob.

Hereinafter, one preferred embodiment of a knob assembly of an electronic product according to the present invention will be described in detail with reference to the accompanying drawings.

3 to 5 are diagrams for explaining the knob assembly of the electronic product according to the present invention.

First, as shown in FIGS. 3 and 4, in the electronic product, the front panel 30 is mounted on the front surface of the main body Bo, and the installation groove 31 is formed on the front surface of the front panel 30. Here, although the installation groove 31 of the front panel 30 was shown to be formed in a substantially circular shape, the shape of the installation groove 31 can be appropriately changed to oval, square, and other shapes.

In the front panel 30, a through hole 32 is formed in the center of the installation groove 31, and a plurality of engaging holes 33a and 33b are formed in both sides of the through hole 32, respectively. A pair of coupling pins 34a and 34b protrude from the bottom of the rear surface of the front panel 30, and the coupling pins 34a and 34b are formed to be positioned below the installation groove 31.

In addition, the knob 35 is operatively installed in the installation groove 31 of the front panel 30, and is fitted in the center of the rear surface of the knob 35 so as to correspond to each other in the through hole 32 of the front panel 30. A push bar 36 is formed which passes.

Knob 35 has a plurality of snap hooks (37a, 37b) that are elastically deformable on both sides of the push bar 36, respectively, the snap hooks (37a, 37b) are the front panel 30 ) Is fitted into the locking holes 33a and 33b of the < RTI ID = 0.0 > This prevents the separation and separation of the knob 35 from the installation groove 31 of the front panel 30.

Here, the knob 35 can be produced in a variety of circular and elliptical, other shapes, wherein the knob 35 and the installation groove 31 of the front panel 30 is preferably formed to correspond to each other. Do.

On the other hand, the pusher 40 is installed on the rear surface of the front panel 30 so as to operate by pressing the tact switch (Sw) mounted on the upper surface of the circuit board (Cb) by the operation of the knob 35.

The pusher 40 has a movable plate 41 which is in contact with the push bar 36 of the knob 35, and presses the tact switch Sw of the circuit board Cb on the back of the movable plate 41. An actuating push plate 42 is formed approximately horizontal.

In addition, the pusher 40 is formed to be integrally connected to the support ribs 44 by the tension ribs 43 which are elastically deformable at the lower end of the movable plate 41, and the support ribs 44 have a pair of coupling holes ( 45a, 45b) are formed.

Pass the coupling pins 34a and 34b of the front panel 30 correspondingly through the coupling holes 45a and 45b of the support rib 44, and the ends of the coupling pins 34a and 34b are welded, that is, melted and glued together. The pusher 40 is installed on the rear surface of the front panel 30.

While the pusher 40 is manufactured to be operated individually by the pressing force of the knob 35, the pusher 40 has a plurality of movable plates 41 on the support rib 44 and the tension rib 43. It is easily understood by those skilled in the art to manufacture integrally connected by) to operate by the pressing force of the knob (35).

Referring to the operating state of the knob assembly of the electronic product according to the present invention as described above are as follows.

As shown in FIGS. 4 and 5, when the user presses the knob 35 in front of the front panel 30, the push bar 36 moves the pusher 40 according to the operation of the knob 35. The plate 41 is pressed to impart a pressing force.

When the movable plate 41 of the pusher 40 is applied with the pressing force by the push bar 36 of the knob 35, the tension rib 43 of the pusher 40 is elastically deformed and the movable plate 41 is elastically deformed. ) Push plate 42 is pressed to operate the tact switch (Sw) of the circuit board (Cb).

As the knob 35 is operated as described above, it is supported by the installation groove 31 of the front panel 30 so that the operation position is precisely regulated. That is, when the knob 35 is pressed by the user in the initial position, the knob 35 is operated to the operating position in which the push plate 42 operates the tact switch Sw by the elastic deformation of the tension rib 43. At this time, the back of the knob 35 is supported on the bottom surface of the installation groove 31 to prevent the knob 35 from being pushed further.

Therefore, according to the present invention, the pusher 40 operates the tact switch Sw accurately by the operation of the knob 35, so that the damage of the knob 35 and the tact switch Sw is effectively prevented and the reliability of the product is greatly increased. Is improved.

In particular, the present invention, even when the user presses the knob 35 with excessive force due to carelessness of the user, the operation position of the knob 35 is regulated while the operation failure is prevented to greatly improve the reliability of the product.

In addition, since the pusher 40 individually operates the tact switch Sw by the operation of the knob 35, malfunction of the knob 35 is prevented from interlocking, thereby greatly improving the reliability of the product.

On the other hand, the above-described embodiment is merely to describe one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed appropriately within the scope of the same idea. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, according to the knob assembly of the electronic product according to the present invention, since the pusher is manufactured in a simple configuration and structure in which the pusher operates the tact switch individually by the operation of the knob, the operation position of the knob is regulated, resulting in breakage and malfunction Not only this is prevented, but also malfunction of the knob is prevented, thereby greatly improving the reliability of the product.

Claims (2)

In the knob assembly to operate the tact switch of the main circuit board to be assembled on the front panel of the electronics, the function is set An installation groove 31 is formed in the front surface, a through hole 32 is formed in the center of the installation groove 31, and a plurality of engaging holes 33a and 33b are formed in both sides of the through hole 32, respectively. A front panel 30 having a pair of coupling pins 34a and 34b protruding from the bottom of the rear surface; The push bar 36 is operably installed in the installation groove 31 of the front panel 30, and is inserted into the through-hole 32 of the front panel 30 to correspond to each other in the center of the rear surface thereof. A knob 35 each having a plurality of elastically deformable snap hooks 37a and 37b to be fitted to correspond to the engaging holes 33a and 33b of the front panel 30; Pusher 40 installed by welding so as to operate by pressing the tact switch (Sw) mounted on the upper surface of the circuit board (Cb) by the operation of the knob 35 on the back of the front panel (30). Knob assembly of an electronic product, characterized in that the configuration. 2. The pusher (40) according to claim 1, wherein the pusher (40) has a movable plate (41) which is in contact with the push bar (36) of the knob (35), and on the rear surface of the movable plate (41) of the circuit board (Cb). A push plate 42 for operating the tact switch Sw is formed, and the lower end of the movable plate 41 is formed to be integrally connected to the support rib 44 by the tension rib 43, and the support rib The knob assembly of the electronic product, characterized in that the pair of coupling holes (45a, 45b) is formed in the (44) the coupling pins (34a, 34b) are fitted to correspond to each other.