KR200167625Y1 - Device for excluding bad action of button switch - Google Patents

Abstract

The present invention relates to a device for preventing a malfunction of a push switch, comprising: a fixing part inserted into and fixed to a protruding tip of a cabinet, a plurality of elastic pieces horizontally arranged at a lower end of the fixing part, and the elastic piece A plurality of pressing members having a knob and a terminal contact fixedly coupled thereto, and a plurality of pressing members capable of passing respective terminal contacts of the pressing member, which are opposed to each other at predetermined intervals so as to limit a rearward movement trajectory of the elastic piece. And a switching member having a reinforcing member having a through hole and another terminal contact portion which is in opposing contact with the terminal contact portion of the pressing member.

Therefore, according to the present invention, even if the user's action force is excessively applied, the movement distance of the pressing member is limited within the range necessary for terminal connection, thereby preventing switching defect such as terminal connection failure or component breakdown, thereby further increasing reliability of electronic products. Can be improved.

Description

Device for excluding bad action of button switch

The present invention relates to a malfunction prevention apparatus of a push switch, and more particularly, to a malfunction prevention apparatus of a push switch for preventing a terminal connection failure or damage of a push switch.

In general, a contact push switch is mainly applied to operate a function of an electronic product such as a television set, a computer monitor, a video cassette recorder, or the like, for example, to select a volume or channel, or to turn on / off a power supply.

1 is a cross-sectional view schematically showing a coupling configuration of a conventional push switch.

Referring to FIG. 1, a plurality of insertion holes 1a are formed in a horizontal direction on a front surface of a cabinet 1 of an electronic product, and a plurality of pressing members 2 are inserted and fixed inside the insertion holes 1a. . The pressing member 2 is partially protruded out of the insertion hole 1a to be pressed by a user, and has a cylindrical knob Knob 2a and a cylindrical or cross-shaped terminal contact portion formed at the rear end of the knob 2a. (2b). The pressing member 2 is fastened and fixed by a fixing screw 4 via a coupling member 3 fitted into the protruding jaw 1b behind the cabinet 1. At the lower end of the coupling member 3, the elastic pieces 3a are protruded as many as the number corresponding to the pressing member 2, and the pressing members 2 are penetrated and coupled to the elastic pieces 3a before and after. It is movable.

On the other hand, the switching member 5 which has the other terminal contact part 5a in the position which faces the front-end | tip of the terminal contact part 2b of the said press member 2 is each provided correspondingly, and this switching member 5 is a printed circuit board It is soldered to the upper surface of (6).

In the conventional push switch, when the user applies the force F to the knob 2a of the pressing member 2 in the direction of the arrow, both terminal contact portions 2b and 5a come into contact with each other to operate a function of a desired use. Electrical connection is possible so that it can be done. At this time, the elastic piece 3a of the coupling member 3 is elastically moved back and forth according to the presence or absence of the action force F. FIG.

However, as shown in FIG. 2, the conventional push switch is switched only by mutual contact between the terminal contacts 2b and 5a, and furthermore, since there is no limitation of the front and rear operating distances to the pressing member 2 separately. When an excessive action force F is applied to the knob 2a of the pressing member 2, the operation is not limited only by the contact between the terminal contact portions 2b and 5a, but is twisted to the side in the form as shown to deviate from its position. This may cause a poor connection or the knob (2a) is completely buried inside the cabinet insertion hole (1a) there is a problem that can not come out to the original position.

In addition, as shown in FIG. 3, the soldering part 7 of the switching member 5 breaks due to the continuous action of the excessive force F, and the switching member 5 itself is lifted from the printed circuit board 6. There is also a problem that can cause severe disconnection.

This makes it impossible to manipulate the various functions of the electronic product as a result, which in turn lowers the reliability of the product.

Accordingly, the present invention was devised to solve the above problems, and an object of the present invention is to prevent a malfunction of the push switch by preventing the switching failure by limiting the operation distance of the pressing member within the range required for terminal connection. To provide.

Malfunction prevention device of the push switch according to the present invention for achieving the above object, the fixing portion is inserted and fixed to the tip of the protruding jaw of the cabinet, and a plurality of elastically arranged horizontally at a lower end of the fixing portion A plurality of pressing members having a knob and a terminal contact portion fixedly coupled to a piece, the elastic piece, and each terminal contact portion of the pressing member being opposed to each other at a predetermined interval so as to limit a rear movement trajectory of the elastic piece. And a switching member having a reinforcing member having a plurality of through holes that can pass therethrough, and another terminal contact portion which is in opposing contact with the terminal contact portion of the pressing member.

1 is a cross-sectional view schematically showing a combined configuration and operating state of a conventional push switch.

2 and 3 are cross-sectional views showing a malfunction state of a conventional push switch.

Figure 4 is a schematic cross-sectional view showing a coupling configuration of the malfunction prevention device of the push switch according to the present invention.

Figure 5 is a perspective view showing the main components of the malfunction prevention device of the push switch according to the present invention.

6 is a cross-sectional view taken along the line A-A of FIG.

Figure 7 is a detailed cross-sectional view showing the operating state of the malfunction prevention device of the push switch according to the present invention.

Explanation of symbols on the main parts of the drawings

10: cabinet, 14: protruding jaw,

20: pressing member, 22: knob,

24, 52: terminal contact, 30: coupling member,

32: fixing part, 33: hook hook,

34: elastic piece, 36: reinforcing member,

36a: through hole, 36b: locking groove,

50: switching member.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

4 is a cross-sectional view schematically showing a coupling configuration of a push switch according to the present invention. And Figure 5 is a perspective view showing the main portion of the configuration of the push switch according to the present invention, Figure 6 is a cross-sectional view taken along line A-A of FIG.

In the drawing, a plurality of insertion holes 12 are formed in a horizontal direction through a front surface or a predetermined portion of a cabinet 10 of an electronic product, while a plurality of protruding jaws 14 are formed inside the cabinet 10. It is formed to protrude so that the parts can be locked and screwed.

Reference numeral 20 denotes a pressing member, which is inserted into the insertion hole 12 and has a cylindrical knob 22 that partially protrudes out of the cabinet 10 so as to be pressed by the user, and the knob ( 22) It consists of a cylindrical terminal contact 24 extending at the rear end and having a smaller diameter. Of course, the shape of the terminal contact portion 24 is not necessarily limited to a cylindrical shape, but may be a cross shape combined in the form of a vertical and horizontal plate.

Reference numeral 30 denotes a coupling member, which is fastened and fixed to the protruding jaw 14 of the cabinet 10 by the fixing screw 40, and simultaneously combines the pressing member 20 to enable elastic movement in the front and rear directions. It is absent.

That is, as shown in FIG. 5, the coupling member 30 has a rectangular plate-shaped fixing part 32 having a plurality of screw fastening holes 32a at its upper end on the cabinet protruding jaw 14. It is formed to be bent in multiple stages to engage the engaging, the edge portion 32b of a predetermined length is formed extending on both sides of the lower end of the fixing portion (32). In addition, a plurality of elastic pieces 34 are formed in the inner space of the edge portion 32b, ie, the lower end of the fixing portion 32, to penetrate the pressing member 20 at a predetermined interval in the horizontal direction.

Furthermore, at the bottom of the fixing portion 32 of the coupling member 30 of the present embodiment, approximately two hooks 33 are protruded side by side on both sides of the edge portion of the position facing the elastic piece 34. On the other hand, the plate-shaped reinforcing member 36 is further connected to the lower end of the extending edge portion 32b of the fixing portion 32 so as to limit the operation distance of the elastic piece 34. Preferably, as indicated in FIG. 7, the distance L2 between the reinforcing member 36 and the elastic piece 34 is such that the terminal contact portion 24 of the pressing member 20 and the terminal contact portion of the switching member 50. Terminal connection is possible only at least wider than the distance L1 between the 52, but in order to limit the movement trajectory of the elastic piece 34, it is better to provide only a small margin of clearance α (that is, L2 = L1). + α).

The reinforcing member 36 is coupled so as to be movable up and down flexibly by the connecting strip 38, and a plurality of through holes 36a are positioned at positions corresponding to the terminal contact portions 24 of the pressing member 20. It is preferable to penetrate wider than the diameter of the terminal contact portion 24. This is because the through hole 36a allows the terminal contact portion 24 of the pressing member 20 to pass therethrough, and since the movement trajectory of the elastic piece 34 forms an arc trajectory, the terminal contact portion 24 which is integrally operated therewith. This is to provide a free space in the up and down direction for the movement.

In addition, a plurality of locking grooves 36b are formed at the lower end of the reinforcing member 36 so as to be mutually fixed to the locking hook 33 at the lower end of the fixing part 32. Here, the locking groove 36b and the locking hook 33 are formed to face each other when the reinforcing member 36 pivots upward.

On the other hand, a switching member 50 having a different terminal contact portion 52 at a position facing the distal end of the terminal contact portion 24 of the pressing member 20 is provided correspondingly, and the switching member 50 is a printed circuit board. It is soldered to the upper surface of 60.

Looking at the operation relationship of the malfunction prevention device of the push switch according to the present embodiment provided as described above with reference to FIG.

First, the reinforcing member 36 hanging on the lower end of the edge portion 34 of the coupling member 30 is rotated upward, and the locking groove 33 of the lower portion of the fixing part 32 and the reinforcing member 36 ( 36b) is fixed to each other and the elastic piece 34 and the pressing member 22 are integrally fixed. Then, the fixing part 32 of the coupling member 30 is inserted into the end of the cabinet protruding jaw 14 to fix the screw. If it is fastened to 40, the assembly is completed.

When the user applies a force F to the knob 22 of the pressing member 20 to operate a desired function, for example, volume or channel selection, power on / off, or the like, The elastic piece 34 and the pressing member 20 are integrally reversed, and then the terminal contact portion 24 of the pressing member 20 and the terminal contact portion 52 of the switching member 50 are brought into electrical contact with each other. This becomes possible.

At this time, the movement trajectory of the elastic piece 34 is not reversed indefinitely (within the elastic limit) according to the strength of the action force F as in the prior art, but is slightly smaller than the distance L1 between the terminal contacts 24 and 52. Since it is blocked by the reinforcing member 36 which maintains the larger set distance L2, as a result, the pressing member 20 which is integrally moved with the elastic piece 34 has only a movement trajectory of a degree only for electrical connection. Keep it limited.

On the other hand, when the action force F is released, the pressing member 20 is returned to its original position by the elastic restoring force of the elastic piece 34.

According to the present invention described above, even if the user's action force is applied excessively, the moving distance of the pressing member is limited within the range required for terminal connection, thereby preventing switching failure such as terminal connection failure or component breakdown, thereby improving reliability of electronic products. It can be further improved.

Claims (5)

A fixing part inserted into and fixed to the tip of the protruding jaw of the cabinet; A plurality of elastic pieces horizontally arranged at a lower end of the fixing part at predetermined intervals; A plurality of pressing members having knobs and terminal contacts fixedly coupled to the elastic pieces; A reinforcing member having a plurality of through-holes through which each terminal contact portion of the pressing member is passed, which is opposed to each other at a predetermined interval so as to limit a rearward movement trajectory of the elastic piece; And And a switching member having another terminal contact portion which is in opposing contact with the terminal contact portion of the pressing member. The method of claim 1, The lower end of the fixing portion is further provided with a plurality of hook hooks, the lower end of the reinforcing member a plurality of locking grooves further comprising a malfunction preventing device of the push switch. The method of claim 2, The locking hook and the locking groove are formed to face each other when the reinforcing member is rotated upward to the rear of the operation of the push switch. The method of claim 1, The distance (L2) between the reinforcing member and the elastic piece is at least wider than the distance (L1) between the terminal contact portion of the pressing member and the terminal contact portion of the switching member. The method of claim 1, The through hole of the reinforcing member is formed to penetrate wider than the diameter of the terminal contact portion of the pressing member, preventing the malfunction of the push switch.