KR19990001418U - Knob assembly assembly structure of electronic products - Google Patents

Abstract

The present invention discloses a knob assembly assembly structure of an electronic product.

Knob assembly assembly structure of the conventional electronics, when the knobs or tact switches are easily damaged when the knobs are pressed by force due to user's carelessness, the reliability of the product is lowered, and the knob assembly is broken during the use of the product. The replacement of the knob assembly was not possible, resulting in user complaints.

The present invention is a knob assembly which is formed to extend each extending so as to have a guide hole in the upper back of the knobs; Guide pins formed on the rear surface of the front panel so as to pass through the corresponding guide holes of the knob assembly and to be prevented from being deformed by a reinforcing rib connected to the rear surface of the front panel; The through-holes of the guide pins are fitted correspondingly to each other so that the operating positions of the knobs are regulated, and are composed of stopper plates assembled by welding.

Therefore, the operating position of the knobs is precisely regulated by the stopper pin to effectively prevent breakage of the knobs and the tact switch, as well as to prevent malfunction of the knobs, thereby greatly improving the reliability of the product.

Description

Knob assembly assembly structure of electronic products

The present invention relates to a knob assembly of an electronic product, and more particularly, to a knob assembly assembly structure of an electronic product to prevent malfunction of the product and improve 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 described. 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, a knob assembly assembly structure of a conventional electronic product includes a support rib having a plurality of knobs 11 supported by tension ribs 12. : It is formed to be integrally connected with 13). 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 is mounted on the upper surface of the circuit board Cb by the pusher 15 while the tension ribs 12 are elastically deformed according to the manipulation of the knobs 11. Is pressed and activated.

However, the knob assembly assembly structure 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 switches ( Sw) 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.

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 knobs is precisely regulated by a simple configuration and structure to prevent damage, as well as the failure of the operation of the knobs It is to provide a knob assembly assembly structure of the electronic products to prevent the improved reliability of the product.

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

2a and 2b is a front view and a cross-sectional view showing a knob assembly assembly structure of a conventional electronic product

Figure 3 is a front view showing the assembly structure of the knob assembly of the electronic product according to the present invention

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

5 is a front view showing the knob assembly of the electronic product according to the present invention

6 is a cross-sectional view showing an operating state of the assembly assembly of the knob assembly of the electronic product according to the present invention

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

30; Knob assembly 31; Knob

32; Tension ribs 33; Support rib

34; Engaging hole 35; Pusher

36; Extension 37; Guide hole

40; Front panel 41; Mounting hole

42; Binding pin 45; Guide pin

45a, 45b; 1st and 2nd protrusion

50; Stopper plate 51; Through hole

55; Cutting groove 56; Connection

Sb; Circuit board Sw; Tack switch

A feature of the present invention for achieving this object is a knob assembly in which a plurality of knobs are formed to be integrally connected to the support ribs by tension ribs and a pusher is formed at the bottom of the back of the knobs, and the knobs are installed by welding. In the assembly structure of the knob assembly of the electronic product consisting of a front panel to which the mounting hole is formed, and a circuit board on which the tact switch operated by the pushers of the knobs is mounted, each of the extensions extends to have a guide hole on the back of the knobs. A knob assembly formed; Guide pins formed on the rear surface of the front panel so as to pass through the corresponding guide holes of the knob assembly and to be prevented from being deformed by a reinforcing rib connected to the rear surface of the front panel; The through-holes of the guide pins are fitted correspondingly to each other so that the operation position of the knobs is regulated, and the knob assembly assembly structure of the electronic product is composed of a stopper plate assembled by welding.

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

3 to 6 are views for explaining the assembly structure of the knob assembly of the electronic product according to the present invention.

First, as shown in FIGS. 3 and 4, the knob assembly 30 is formed such that the plurality of knobs 31 are integrally connected with the support ribs 33 by the tension ribs 32, and the knob assembly 30. A plurality of coupling holes 34 are formed in the support ribs 33 of the support ribs 33, and the support ribs 33 are formed to be positioned below the rear surfaces of the knobs 31.

That is, the knob assembly 30 is a plurality of knobs 31 are connected to the support ribs 33 to be manufactured as a single combination, the knobs 31 are made of synthetic resin material by molding, round and oval, and other Various shapes can be produced.

In addition, a pusher 35 is formed below the rear surface of the knobs 31, and the pusher 35 selectively operates the tact switch Sw mounted on the upper surface of the circuit board Cb. Knob assembly 30 has an extension piece 36 is formed in the upper portion of the back of the knobs 31, respectively, and guide holes 37 are formed in the center of the extension piece 36, respectively.

On the other hand, the video cassette recorder (VCR) has an installation hole 41 formed in the front of the front panel 40 so that the knobs 31 of the knob assembly 30 are exposed, and the knob is formed on the back of the front panel 40. A plurality of coupling pins 42 inserted into the coupling holes 34 of the assembly 30 protrude.

Then, the coupling pins 42 of the front panel 40 are inserted through the coupling holes 34 of the knob assembly 30, and then the ends of the coupling pins 42 are welded, that is, melted and glued to the knob assembly 30. ) And the front panel 40 are assembled.

In addition, a guide pin 45 is formed to protrude from the back of the front panel 40 to correspond to each other in the guide hole 37 of the knob assembly 30, and the guide pin 45 is formed in the front panel ( It is formed to prevent deformation by the reinforcing ribs 46 connected to the back of the 40.

The guide pin 45 has a first protrusion 45a that protrudes from the rear surface of the front panel 40, and the second projection 45b on the upper surface of the first protrusion 45a is caught by the step 42a. It is formed to protrude concentric circles to have. That is, the guide pin 45 has a larger diameter of the first protrusion 45a than the second protrusion 45b, and a locking step 45c due to a step is formed on the boundary surface thereof.

On the other hand, the first projection 45a of the guide pin 45 is loosely fitted into the guide hole 37 of the knob assembly 30 so that the knobs 31 can be operated. That is, the outer diameter of the first protrusion 45a is smaller than the inner diameter of the guide hole 37 to be fitted.

Then, the through holes 51 of the stopper plate 50 for regulating the operating positions of the knobs 31 are inserted into the second projections 45b of the guide pins 45 so as to correspond to each other and to pass. The end of the projection 45b is welded to assemble the stopper plate 50 to the guide pin 45. Here, the stopper plate 50 is caught by the latching jaw 45c of the guide pin 45 and the assembly position thereof is set to precisely regulate the operation position of the knobs 31.

As shown in FIG. 5, the knob assembly 30 and the stopper plate 50 described above are integrally manufactured by molding to be cut and used as necessary. That is, the stopper plate 50 is integrally formed by the connecting piece 56 having the cutting groove 55 on one side of the knob assembly 30, for example, on one side of the support rib 33, when forming the knob assembly 30. It is formed as.

And, the connecting piece 56 is formed smaller than the thickness of the support rib 33 and the stopper plate 50 by the cutting groove 55 to enable easy cutting, the cutting groove 55 is formed in a substantially V-shape. do. Accordingly, the stopper plate 50 is cut from the support rib 33 while the connecting piece 56 is bent in one direction with respect to the cutting groove 55.

Here, the stopper plate 50 has been described as being integrally formed on one side of the support rib 33, but the position of the stopper plate 50 can be easily understood and used by cutting after fabricating by changing the position appropriately. will be.

The knob assembly 30 described above shows that a plurality of knobs 31 are connected to the support ribs 33 to be manufactured in one combination, but the knob assembly 30 is one knob made of a single component. Even if it is easy to apply.

In addition, although the knob assembly 30 has shown that the guide pins 45 are formed to correspond to the number of knobs 31, the number and position of the guide pins 45 may be appropriately changed as necessary.

Referring to the assembly and operation of the knob assembly assembly structure of the electronic product according to the present invention as described above are as follows.

As shown in FIG. 5, in the case where the stopper plate 50 is integrally molded to the support rib 33 of the knob assembly 30, the operator grasps the support rib 33 and the stopper plate 50 by hand and cuts them. The support rib 33 and the stopper plate 50 are cut by bending the connecting piece 56 in the Han group direction with respect to the groove 55. At this time, the stopper plate 50 is easily bent by the cutting groove 55, the connection piece 56 is easily cut.

As shown in FIG. 3, the front panel 40 is coupled to the coupling holes 34 of the support plate 33 while the stopper plate 50 is cut from the support plate 33 of the knob assembly 30. The pins 42 are inserted to correspond to each other, and the first projection 45a of the guide pin 45 is fitted to the guide hole 37 of the extension piece 36 to correspond to each other.

Then, after inserting the through holes 51 of the stopper plate 50 into the second projections 45b of the guide pins 45 so as to correspond to each other, the ends of the coupling pins 42 and the second projections 45b. When the parts are welded, the knob assembly 30 and the stopper plate 50 are firmly assembled to the front panel 40. At this time, the stopper plate 40 is caught by the catching jaw 45c of the guide pin 45 and its assembly position is set accurately.

In this state, as shown in FIG. 6, when the user selects and presses one of the knobs 31 of the knob assembly 30 in front of the front panel 40, the tension is adjusted according to the manipulation of the knobs 31. As the ribs 32 are elastically deformed, the tact switch Sw of the circuit board Cb is pressed by the pusher 35 to be operated.

In the process of operating the knobs 31 of the knob assembly 30 as described above, the guide hole 37 formed in the extension piece 36 of the knobs 31 is formed in the first protrusion 45a of the guide pin 45. Guided to the stopper plate 50, whereby the operating position of the knobs 31 is precisely regulated.

In more detail, when the knobs 31 are pressed by the user in the initial position, the knobs 31 cause the pusher 35 to operate the tact switch Sw by the elastic deformation of the tension ribs 32. The extension piece 36 is supported by the stopper plate 50 while the guide hole 37 of the extension piece 36 is guided along the outer circumferential surface of the first protrusion 45a, and the knobs 31 of the knobs 31 are operated. The operating position is precisely regulated.

That is, the knobs 31 are rotated to some extent from the initial position to the operating position with respect to the tension ribs 32 so that the pusher 35 can operate the tact switch Sw, and the rotation of these knobs 31 It is regulated by the stopper plate 50.

In addition, since the stopper pin 45 is formed to be reinforced by the connection of the reinforcing rib 46 on the rear surface of the front panel 46, the deformation or breakage of the stopper pin 45 is effectively prevented.

Thus, the present invention operates the knob 31 and the tact switch Sw precisely because the knobs 31 of the knob assembly 30 are operated precisely to the operating position where the stopper plate 50 can operate the tact switch Sw. ) Can be effectively prevented, greatly improving the reliability of the product.

In particular, the present invention, even when the user presses the knobs 31 with unreasonable force due to the carelessness of the user, the rotation of the knobs 31 is made only to the operating position, preventing malfunction, 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 assembly structure of the knob assembly of the electronic product according to the present invention, the operation position of the knobs is precisely regulated by the stopper plate, which effectively prevents damage to the knobs and the tact switch, This can greatly improve the reliability of the product.

Claims (4)

A knob assembly in which a plurality of knobs are formed to be integrally connected to the support ribs by the tension ribs, and a pusher is formed at the bottom of the back of the knobs; a front panel in which an installation hole is formed so that the knobs are installed by welding; In the assembly structure of the knob assembly of the electronic product consisting of a circuit board mounted with a tact switch operated by the pushers of the knobs, A knob assembly 30 in which extension pieces 36 are formed to extend to have guide holes 37 in upper portions of rear surfaces of the knobs 31; Reinforcing ribs 46 are formed on the rear surface of the front panel 40 so as to pass through the guide holes 37 of the knob assembly 30 to correspond to each other, and are connected to the rear surface of the front panel 40. A guide pin 45 formed to prevent deformation; Knob of the electronic product, characterized in that the through-hole 51 is fitted to the guide pin 45 correspondingly to each other so that the operating position of the knob 31 is fitted to each other by a stopper plate 50 assembled by welding. Assembly Assembly Structure. The said guide pin 45 has the 1st protrusion 45a which protrudes from the back surface of the said front panel 40 so that the guide hole 37 of the said extension piece 36 may fit. The through hole 51 of the stopper plate 50 is inserted into the upper surface of the first projection 45a, so that the second projection 45b is formed to protrude to have the locking step 42c by the step so that the assembly position thereof is restricted. Knob assembly assembly structure of the electronic product. The electronic product of claim 1, wherein the stopper plate 50 is integrally formed by a connecting piece 56 having a cutting groove 55 so as to be cut on one side of the knob assembly 30. Knob assembly assembly structure. 4. The stopper plate (50) according to claim 3, characterized in that the stopper plate (50) is integrally formed on one side of the support plate (33) of the knob assembly (30) by a connecting piece (56) having the cutting groove (55). Knob assembly assembly structure of electronic products.