KR19990016665U - Knob Structure of Front Panel for Electronics - Google Patents

Abstract

The present invention discloses a knob structure of a front panel for an electronic product. According to the present invention, a plurality of movable pieces are integrally formed on the front of the front panel to allow elastic deformation by the U-shaped ablation holes, and the knobs protrude from the front ends of the movable pieces, respectively, By operation of the knob, the push bars for activating the tact switch are extended. Therefore, since the knob for operating the tact switch of the circuit board is integrally formed by the cutting holes on the front surface of the front panel, the assembly and operation failure are prevented and the reliability of the product is improved. In addition, the assembly structure is improved by a simple configuration and structure, and the production cost of the product is reduced, such as the manufacturing cost of the mold is reduced.

Description

Knob Structure of Front Panel for Electronics

The present invention relates to an electronic product, and more particularly, to a knob structure of a front panel for an electronic product in which knobs for setting functions of the electronic product are integrally molded on the front of the front panel. will be.

In general, electronic products are equipped with various types of function selection knobs to set electronic functions. According to the video cassette recorder as an example of the electronic product, the power and play of the video cassette recorder are shown. Modes such as 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, the video cassette recorder (VCR) has a front panel (11) mounted on the front of the main chassis (10), and the front panel. A plurality of knob assemblies 12 are mounted at 11 so as to enable a user's operation. Thus, the user can perform various functions of the video cassette recorder (VCR) by operating the knob assembly 12.

As shown in FIGS. 2A and 2B, the knob assembly 20 of the related art electronic appliance includes a plurality of knobs 21 having support ribs by tension ribs 22. It is formed to be integrally connected with 23). A plurality of coupling holes 24 are formed in the support ribs 23 of the knob assembly 20, and a pusher 25 is formed at the bottom of the rear surface of the knobs 21, respectively.

Meanwhile, installation holes 31 are formed in the front of the front panel 30 so that the knobs 21 of the knob assembly 20 are exposed, and the coupling hole 24 of the knob assembly 20 is formed at the rear of the front panel 30. A plurality of coupling pins 32 inserted through the protrusions are formed to protrude. After the coupling pins 32 of the front panel 30 are inserted through the coupling holes 24 of the knob assembly 20, the ends of the coupling pins 32 are welded, that is, melted and glued. 20 and the front panel 30 are assembled. Accordingly, the tact switch 36 mounted on the circuit board 35 by the pusher 25 is pressed while the tension ribs 22 are elastically deformed according to the operation of the knobs 21. It works.

However, the knob assembly assembly structure of the conventional electronics as described above, when the user presses the knobs 21 in front of the front panel 30 to operate, due to the carelessness of the user, the knobs 21 or the tact switch ( 36) was easily broken and the reliability of the product was greatly degraded. That is, when the user presses the knobs 21 with excessive force, the tension ribs 22 are elastically deformed by plasticity and thus cannot be restored to their original state, so that the function of the knob assembly 20 is lost or structurally. As a result, breakage of the weak tension ribs 22 occurs. In addition, there is a problem that the tact switch 36 is frequently broken because the pusher 25 strongly presses the tact switch 36 when the knobs 21 are operated with excessive force. In particular, when the knob assembly 20 is broken during the use of the electronic product, the knob assembly 20 cannot be replaced, which greatly affects the user's dissatisfaction.

In addition, since the support ribs 23 of the knob assembly 20 are coupled to the coupling pins 32 of the front panel 30 by welding, the coupling ribs 24 and the coupling pins 32 are bonded to the coupling holes 24. Destruction occurs due to burnout or structural weakness, which frequently occurs. In this way, when the welding failure of the support ribs 23 and the coupling pins 32 is generated, flow is generated while the fixing force of the support ribs 23 is weakened, and thus the positions of the knobs 21 are changed, thereby causing the pusher ( There was a problem that 25) did not operate the tact switch 36 properly. When such a welding failure occurs, there is a problem that the assembly failure to replace the knob assembly 20 and the front panel 30 is raised to increase the production cost of the product.

In addition, since the knob assemblies 20 are formed on the back surface of the front panel 30 by separate molds, and then assembled by welding, the structure of the molds for manufacturing them is complicated, and the number of molds increases, thereby increasing the number of molds. As manufacturing costs increased, the production cost of products increased, and the development and production period of electronic products was delayed. Such a problem has been raised as a bigger problem when various kinds of electronic products are produced.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is that the knobs are integrally molded on the front of the front panel by a simple configuration and structure, thereby preventing poor assembly and operation In addition to improving the reliability of the product, it is to provide a knob structure of the front panel for electronic products to reduce the production cost of the product.

1 is a perspective view showing a video cassette recorder as an example of a general electronic product;

2A and 2B are a perspective view and a cross-sectional view showing a knob assembly assembly structure of a conventional video cassette recorder;

3 is a perspective view showing a knob structure of a front panel for an electronic product according to the present invention;

4a and 4b is a front view and a cross-sectional view showing the knob structure of the front panel for an electronic product according to the present invention.

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

40: main chassis 45: front panel

46: ablation hole 47: movable piece

48: knob 49: push bar

50: circuit board 51: tact switch

A feature of the present invention for achieving the above object is a knob structure of a front panel for electronic products for selectively operating a tact switch of a circuit board installed at the rear of the front panel. A plurality of movable pieces are integrally formed to allow elastic deformation by the ablation holes, and knobs protrude from the front ends of the movable pieces, respectively, and a push bar for operating the tact switch by manipulating the knobs on the back of the knob is provided. It is in the knob structure of the front panel for electronic products which each extends.

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

3 to 4a and 4b are views for explaining the knob structure of the front panel for an electronic product according to the present invention.

First, as shown in FIGS. 3 and 4A, when a video cassette recorder VCR is viewed as an example of an electronic product, the front cassette 45 is mounted on the front of the main chassis 40. The front panel 45 is made of a synthetic resin molded body.

On the other hand, a plurality of movable pieces 47 are integrally formed on the front surface of the front panel 45 so as to be elastically deformed by the substantially U-shaped ablation holes 46. That is, the front panel 45 is formed such that the plurality of movable pieces 47 are elastically deformed by the formation of the ablation holes 46. At this time, the movable pieces 47 are elastically deformed with respect to both ends of the ablation holes 46. Knobs 48 are protruded from the front ends of the movable pieces 47, and push bars 49 are formed on the back of the knobs 48, respectively. The knob 48 is preferably protruded to form an approximately circular shape.

As shown in FIG. 4B, a circuit board 50 is installed at the rear of the front panel 45, and a tact switch 51 for setting a function is the same as the push bar 49 at the front of the circuit board 50. It is mounted to be positioned on the axis. Thus, when the user presses the knob 48 of the front panel 45 from the front to the rear with a predetermined force, the user moves on the basis of both ends of the cut holes 46 corresponding to the operated knob 48. The pieces 47 are elastically deformed, which causes the push bar 49 to actuate by pressing the tact switch 51.

On the other hand, in the present invention, since the knob 48 is integrally molded on the front of the front panel 45, welding required for the installation of the knob assembly 20 is unnecessary, and deformation and damage caused by burnout are effectively removed. Defects are prevented. In particular, even when the user presses the knob 48 with excessive force due to carelessness of the user, as the tact switch 51 is operated by the elastic deformation of the movable pieces 47 having a structure in which the strength is reinforced, The damage of the tact switch 51 is effectively prevented and the reliability of the product is remarkably improved.

In addition, the present invention has a simple configuration and structure capable of integrally forming the movable piece 47, the knob 48, and the push bar 49 by the cutting holes 46 during the molding of the front panel 45. Since it is manufactured, the assembly property of a product improves remarkably. In addition, the number of molds required for separately manufacturing the conventional knob assembly 20 and the front panel 30 is reduced, thereby reducing the manufacturing cost of the mold and consequently reducing the production cost of the product. That is, according to the present invention, the knob 48 capable of operating the tact switch 51 by one mold for molding the front panel 45 can be molded integrally with the front panel 45.

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 structure of the front panel for an electronic product according to the present invention, since the knob for operating the tact switch of the circuit board is integrally formed on the front surface of the front panel, the assembly failure and This prevents malfunction and improves product reliability. In addition, the assembly cost is improved by a simple configuration and structure, and the production cost of the product is significantly reduced, such as the production cost of the mold is reduced.

Claims (1)

As a knob structure of a front panel for electronic products for selectively operating a tact switch of a circuit board installed at the rear of the front panel, A plurality of movable pieces 47 are integrally formed on the front surface of the front panel 45 to allow elastic deformation by the substantially U-shaped cutting holes 46. Knobs 48 are protruded from front ends of the movable pieces 47, respectively, A knob structure of a front panel for an electronic product, characterized in that a push bar (49) for operating the tact switch (51) is formed to extend on the rear surface of the knob (48).