KR200241402Y1 - Tact switch form pcb printed circuit board - Google Patents

Abstract

The present invention relates to a PCB-type tact switch configured to reduce the size and shape of the light weight, and to prevent foreign substances and moisture from entering the interior, so that the present invention can be applied to various electronic products that have been advanced and miniaturized.

According to a feature of the present invention, a central contact portion and a variable contact portion are formed on the upper surface of the substrate, and a terminal portion electrically connected to the central contact portion and the variable contact portion, respectively, is formed on the bottom surface of the substrate and the center contact portion is variable. A metal contact for electrically connecting a contact part is seated, and an upper surface of the PCB is a push cover of an elastic rubber material covering the metal contact is pressed at high temperature and high pressure, and the PCB type tact switch is configured to be integrally coupled with the PCB. Is provided.

Description

PCT Type Tact Switch {TACT SWITCH FORM PCB PRINTED CIRCUIT BOARD}

The present invention relates to a PCB-type tact switch, and more specifically, to reduce the size and shape of the light weight, and to prevent foreign substances and moisture from entering into the interior, so that it can be applied to various electronic products that have been advanced and miniaturized. It relates to a configured PC-type tact switch.

In general, the tact switch is a typical switch that is used for various electronic products, such as to perform the opening and closing operation of the circuit by light contact, the opening and closing operation of the circuit is accurate and easy, and the structure is simple, and in recent years, It is a trend that is increasingly used for electronic communication devices such as cellular communication such as cellular phones, various miniature notebooks, portable cassettes, etc., and according to the trend, the tact switch is also small in weight but small in size It is becoming.

In the conventional configuration of such a tact switch, as illustrated in FIGS. 1 and 2, an accommodating part 11a is formed inside the housing 11, and a center conductive plate ( 12 and the variable conductive plate 13 are formed, and the terminal 14 connected to the central conductive plate 12 and the variable conductive plate 13 is formed outside the housing 11. The dome-shaped metal contact 15 is inserted into the accommodating portion 11a of the 11, and the metal contact 15 is elastically inserted into the accommodating portion 11a of the housing 11 located above the metal contact 15. The stem 16 is pressed into the housing, and the upper surface of the housing 11 includes a metal plate 15 inserted into the housing 11a and a cover plate 17 for fixing the stem 16 to the housing. When the stem 16 is pressed and coupled to seal 11a, the metal contact 15 is elastically stretched, and the central conductive plate 12 and FIG side in contact with the top plate 13 is configured to be powered by being passed through between the terminal (14).

However, such a conventional tact switch 10 is configured to support the housing 11, the metal contact 15, the stem 16, and the stem, and at the same time seal the receiving portion 11a of the housing 11. It is composed of a cover plate (17), etc. There is a large number of parts and assembly process, the assembly work is not only troublesome, but also consists of a variety of parts to develop a tact switch 10 that becomes lighter and thinner as the size can no longer be reduced There was a problem that could not keep up with the trend.

The present invention has been proposed in view of the above problems, and provides a PCB type tact switch configured to improve the reliability of the product by reducing the size and shape of the light weight and preventing foreign substances and moisture from entering into the inside. I would like to.

According to a feature of the present invention for achieving the above object, the center portion and the variable contact portion is formed on the upper surface of the substrate, and the bottom portion of the substrate is formed with a terminal portion electrically connected to the center contact portion and the variable contact portion, respectively A metal contact is electrically connected to the central contact portion and the variable contact portion, and a press cover made of an elastic rubber material covering the metal contact is pressed at a high temperature and high pressure on the upper surface of the PC contact to be integrally coupled with the PC. A PC type tact switch is provided.

1 is an exploded perspective view showing a conventional tact switch.

2 is a cross-sectional view showing a state in which a conventional tact switch is assembled;

Figure 3 is an exploded perspective view showing a PC-type tact switch according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing the PC-type tact switch of the present invention from another angle.

Figure 5 is a cross-sectional view showing the assembled state of the PC-type tact switch of the present invention.

6a and 6b are a perspective view and a cross-sectional view showing the step of manufacturing the PC-type tact switch of the present invention.

7A and 7B are exploded perspective views and cross-sectional views showing a PCB-type tact switch according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: PC type tact switch

110: PC 111: substrate

111a: through hole 112: center contact portion

113: variable contact portion 114: terminal portion

115: terminal portion 116: conductor

117: solid mask 120: metal contact

130: press cover 131: stem

132: pressure projection 140: thickness control plate

141: insertion hole 150: double-sided adhesive film

Hereinafter, a PCB-type tact switch of the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 is an exploded perspective view showing a PC-type tact switch according to an embodiment of the present invention, Figure 5 is a cross-sectional view showing the assembled state of the PC-type tact switch of the present invention, Figure 6a and 6b is the present invention A perspective view and a cross-sectional view showing the steps in which the PC-type tact switch is manufactured.

As shown, the PCB-type tact switch 100 according to the embodiment of the present invention has a central contact portion 112 and a variable contact portion 113 formed on an upper surface of the substrate 111 and a bottom surface of the substrate 111. In the central contact portion 112 and the variable contact portion 113, the terminal portion 114, 115, which is electrically connected to each of which is formed is elastically curved on the upper side of the PC 110 formed, the central contact portion 112 ) And the dome-shaped metal contact 120 to be electrically connected to the variable contact portion 113 is seated,

On the upper surface of the PC 110, an elastic rubber press cover 130 covering the metal contact 120 is compressed at a high temperature and high pressure to be integrally coupled with the PC 110.

The PCB 110 has a plate shape, and a through hole 111a is formed in each of a central portion and a peripheral portion of a rectangular substrate 111 that is non-conductive, and a center portion and a peripheral portion of the upper surface of the substrate 111 on which the through hole 111a is formed. The central contact portion 112 and the variable contact portion 113 are each formed concentrically and are formed in a concentric circle, and the printed terminal is formed on both sides of the bottom surface of the substrate 111, respectively. Forming the printed circuit board, and forming the printed circuit board, wherein the center contact portion 112, the one side terminal portion 114, the variable contact portion 113, and the other terminal portion 115 formed on the top and bottom surfaces of the substrate 111 are respectively formed on the substrate. Conductor 116, which is a conductor filled in the through hole 111a in the process of printing the center contact portion 112, the variable contact portion 113 and the terminal portion 114, 115 on the top and bottom of the (111) Interconnected by a non-conducting portion except for the bottom edge of the substrate 111 Phosphorus solid mask 117 is formed to form the terminal portion 114, 115 is partially exposed.

The substrate 111 and the press cover 130 are pressed at a high pressure and a high pressure by a mold, and the press cover 130 may be molded of a material such as synthetic resin, urethane, etc., which has a desorption property in some cases.

In addition, the center portion of the pressing cover 130 is configured by the user's hand pressing the stem 131 is formed, the pressing projection for pressing the metal contact 120 to the inner side central portion of the pressing cover 130 ( 132 is formed at least one location is configured to effectively press the metal contact 120.

On the other hand, in some cases, as shown in Figure 7a and 7b between the PCB 110 and the pressing cover 130 is inserted into the rigid thickness control plate 140 of the PCB-type tact switch 100 At the same time to adjust the thickness of the PCB-type tact switch 100 is configured to prevent the deformation or breakage, the insertion hole 141 through which the metal contact 120 is inserted into the central portion of the thickness control plate 140 Is formed.

When the thickness adjusting plate 140 is inserted between the PC 110 and the pressing cover 130 to be integrally coupled, the pressing cover 130 and the thickness adjusting plate 140 are primarily operated at a high temperature and high pressure for efficiency of work. Compression is integrally coupled and then the thickness control plate 140 and the PC 110 is preferably bonded to the double-sided adhesive film 150 to be integrally combined.

The action of the PCB-type tact switch of the present invention configured as described above is as follows.

Initially, the PCB-type tact switch 100 is in a state of being electrically 'off' because only the edge is in contact with the variable contact portion 113 by the elastic force of the metal contact 120.

Then, when the user presses the stem 131 protruding on the outer surface of the pressing cover 130, the pressing cover 130 is deformed deflectively, and the pressing protrusion 132 formed on the inner surface of the pressing cover 130 is downwardly moved to the metal. The center portion of the contact 120 is pressed, and the metal contact 120 is a variable contact with the central contact portion 112 formed on the upper surface of the substrate 111 while the center portion is extended downward by the pressing of the pressing protrusion 132. The surface contact is made to the portion 113 and is electrically connected to the PCB-type tact switch 100 is 'on'.

Then, when the user releases the pressing force holding the pressing plate, the pressing cover 130, which has been refracted by the demagnetization of the pressing cover 130, is restored and at the same time the surface contact with the central contact portion 112 and the variable contact portion 113 As the metal contact 120 is restored by the elastic force, the center portion of the metal ton contact is separated from the center contact portion 112 so that the PC-type tact switch 100 is electrically 'off'.

At this time, the substrate 111 and the press cover 130 are pressed together at a high temperature and are integrally coupled to each other so that the metal contact 120 electrically connecting the central contact portion 112 and the variable contact portion 113 is installed. There is no fear that foreign matters or moisture may flow between the substrate 111 and the press cover 130, thereby preventing errors and failures of the electric signals due to the inflow of foreign matters, as well as a more reliable dustproof waterproof structure. The type tact switch 100 can be obtained.

In addition, the PCB-type tact switch 100 of the present invention is a lightweight and thin type by printing molding the central contact portion 112, the variable contact portion 113 and the terminal portion 114, 115 which is a conductor on a relatively thin substrate 111 This is possible, of course, it is possible to manufacture a plurality of PC-type tact switch 100 at the same time in a single process it is possible to reduce the cost and price of the product.

As described above, the PB-type tact switch of the present invention, because the PB and the press cover are pressed together at a high temperature, are integrally coupled to each other, so that foreign substances or moisture flow into the central contact and the variable contact that are electrically connected / blocked by the metal contact. There is no fear that the occurrence and failure of the electrical signal due to foreign matter and moisture can be prevented, it is possible to obtain a more reliable dustproof waterproof tact switch.

In addition, the PB-type tact switch of the present invention can be manufactured in a lightweight and compact type by using a PCB in which a central conductor, a variable conductor, and a terminal are printed and molded on a board, and simultaneously process a plurality of PB-type tact switches in a single process. Since mass production is possible, it is possible to reduce the cost of the product and provide a low-cost tact switch.

Although the embodiments of the present invention have been described so far, the present invention is not limited thereto, and various embodiments which can be modified and changed within the true spirit and scope of the principles described and claimed are included in the protection scope of the present invention. will be.

Claims (5)

The central contact portion 112 and the variable contact portion 113 are formed on the upper surface of the substrate 111 and electrically connected to the central contact portion 112 and the variable contact portion 113 on the bottom surface of the substrate 111, respectively. The metal contacts 120 electrically connecting the central contact portion 112 and the variable contact portion 113 to the PC 110 having the terminal parts 114 and 115 formed thereon are seated thereon. An upper surface of the press contact cover of the elastic rubber material covering the metal contact 120 is pressed at a high temperature and high pressure, the PCB type Tact switch, characterized in that configured integrally coupled with the PC (110). The upper surface of the substrate 111 of claim 1, wherein the PCB 110 has a plate shape, and a through hole 111a is formed at a central portion and a periphery of the non-conductive substrate 111, respectively. The central contact portion 112 and the variable contact portion 113, which are conductors, are formed concentrically on the center portion and the periphery portion, and the terminal portions 114 and 115, which are conductors, are formed on both sides of the bottom surface of the substrate 111, respectively. The central contact portion 112, the one side terminal portion 114, the variable contact portion 113, and the other terminal portion 115 formed in the concave-convex shape are formed in the substrate 111, respectively. ) And the variable contact portion 113 and the terminal portion 114, 115 is electrically connected by a conductor 116, which is a conductor filled in the through-hole 111a, in the process of forming the bottom surface of the substrate 111 The non-conductive solid mask 117 is formed to partially expose the terminal portions 114 and 115. PC-type tact switch characterized in that. [2] The PCB-type tact switch of claim 1, wherein the stem 131 is formed to protrude from the outer surface of the push cover 130. [2] The PCB-type tact switch according to claim 1, wherein at least one pressing protrusion (132) for pressing the metal contact (120) is formed on an inner surface of the pressing cover (130). According to claim 1, wherein the thickness control plate 140 having an insertion hole 141 is inserted between the PC 110 and the press cover 130 to be integrally coupled is configured to be integrally coupled PC type tact switch characterized by the above-mentioned.