KR101150761B1 - Slim type push switch device - Google Patents

Abstract

PURPOSE: A slim type push switch apparatus is provided to laminate a film of a synthetic resin material and a conductive plate which has thin upper and lower base films, thereby minimizing the thickness of the switch apparatus. CONSTITUTION: Outer contact points(131,141) are exposed to the outside of upper and lower base films. Fixed contact points(132,142) are exposed to the upper surface of the base film. First and second conductive plates(130,140) are arranged between the upper and lower base films(110,120). A movable contact point material(160) is arranged by separating from the fixed contact point of the second conductive plate. A spacer film(150) forms a space(151) for receiving the movable contact point material. A protection film(170) is attached on the upper surface of the spacer film.

Description

Slim Type Push Switch Device {Slim Type Push Switch Device}

The present invention relates to a push switch device in which a switch function is achieved by elastically deforming and restoring a dome-shaped movable contact member pressed by a finger or the like to connect or space with a plurality of fixed contacts provided in a housing, and in particular, a thickness. It relates to a slim type push switch device further thinner.

As a conventional small push switch device, one having a configuration as shown in Fig. 7 is widely used. That is, the conventional push switch device includes a box-shaped housing 3 having a bottom and an open top formed by inserting the first metal plate 1 and the second metal plate 2, and an inner space of the housing 3. A dome-shaped movable contact member 4 accommodated in 3a) and a protective cover for preventing dust from entering the contact portion inside the housing 3 while restricting the movable contact member 4 from moving upward ( It consists of 5).

In addition, a part of the first metal plate 1 is exposed to the bottom surface of the interior space 3a of the housing 3 to form a fixed contact 6, and a part of the second metal plate 2 is mounted in the housing 3. It exposes from the bottom surface so that it may contact the edge of the movable contact member 4 which was made. In addition, the other end portions of the first and second metal plates 1 and 2 form an external connection terminal (not shown) exposed to the outer wall surface of the housing 3, respectively.

The conventional small push switch device configured as described above is mounted on a circuit board and disposed below a non-illustrated operating body. When the movable contact member 4 is pushed by a finger or the like from above, the movable contact member ( (4) is elastically deformed downward with the protective cover (5), the apex of the movable contact member (4) is inverted and abuts against the fixed contact (6) of the first metal plate (1) so that the switch circuit is turned off. It is supposed to be turned on. In addition, when the pressing operation force of the finger or the like is removed in such an on state, the movable contact member 4 returns to its original shape by its elastic restoring force, so that the vertex portion of the movable contact member 4 is removed from the first metal plate 1. The switch circuit is spaced apart from the stationary contact 6 to return to the off state.

However, since the conventional small push switch device is configured to insert and integrate the first and second metal plates 1 and 2 during the manufacture of the housing 3, the bottom portion of the housing may be formed of the first and second metal plates ( It is necessary to secure a thickness enough to embed the first and second parts by insert molding, and the inner space 3a of the housing 3 is a housing of the dome-shaped movable contact member 4, so that the movable contact member ( 4) There must be enough space to accommodate it. Therefore, the thickness of the conventional small push switch device as described above is usually made of 3 mm or more, and has a structure in which it is difficult to further reduce the thickness.

Therefore, such a push switch device is relatively small and is mostly used for portable or small electronic products. Recently, these electronic products are required to further reduce the weight and thickness of the product for convenience of use and portability. In light of this there was a problem that could not be met.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a switch function by which a dome-shaped movable contact member is elastically deformed and restored so as to be connected to or separated from a fixed contact in a housing. The present invention provides a slim push switch device that can meet the demands of weight reduction and thinning of electronic products used by the push switch device.

The present invention for achieving the above object, the upper and lower base film; Interposed between the upper and lower base films, the front and rear surfaces are attached to opposite surfaces of the upper and lower base films, and the outer contact is exposed to the outside of the upper and lower base films, and the fixed contact is exposed to the upper surface of the upper base film. A pair of first and second conductive plates; A dome-shaped movable contact member disposed at an edge portion in contact with a fixed contact of the first conductive plate, and a center vertex portion spaced apart from the fixed contact of the second conductive plate; A spacer film attached to an upper surface of the upper base film and forming a space for accommodating the movable contact member; And a protective film attached to an upper surface of the spacer film to cover the upper surface of the movable contact member.

In addition, the present invention, the upper base film is formed with an internal exposure hole at a position corresponding to the fixed contact of the first and second conductive plate, the fixed contact of the first and second conductive plate through the internal exposure hole The slim push switch device is exposed to the space of the spacer film.

In addition, the present invention is characterized in that the slim push switch device further attached to the reinforcing plate formed with a through hole to expose the fixed contact of the first and second conductive plate between the upper base film and the spacer film.

In addition, the present invention is characterized in that the slim type push switch device is further attached with an insulating film formed with a through hole to expose the fixed contact of the first and second conductive plate between the reinforcing plate and the spacer film.

In addition, the present invention, the outer base hole is formed in a position corresponding to the outer contact of the first and second conductive plate in the lower base film, the outer contact of the first and second conductive plate through the outer exposure hole It is characterized by the slim push switch device of the externally exposed configuration.

In addition, the present invention is characterized by a slim push switch device formed by extending a plurality of external contact pieces exposed in the lateral direction between the upper and lower base films on the edges of the first and second conductive plates.

The present invention further includes a reinforcing metal plate interposed between the lower base film and the first and second conductive plates, and an insulating film interposed between the reinforcing metal plate and the first and second conductive plates. It is characterized by a slim push switch device having a plurality of bent fixing pieces that are elongated to cover a portion of the upper surface of the protective film at the edge of the reinforcing metal plate.

According to the slim push switch device of the present invention having such a characteristic configuration, as the first and second conductive plates for the switch function, and the upper and lower base films for maintaining the same, are laminated with a thin conductive plate and a film of synthetic resin, The thickness of the switch device can be made as thin as possible. In addition, since each component is manufactured by processing a thin conductive plate and a film of synthetic resin with a press machine, and assembled by fixing each of these components with an attachment means such as an adhesive in turn, manufacturing cost is reduced and assembly process compared with the prior art. This simplification has the effect of improving productivity.

1 is an exploded perspective view showing a slim push switch device according to a first embodiment of the present invention.
2 (a) and 2 (b) show an operating state of the slim push switch device according to the first embodiment of the present invention, and are sectional views taken along the line AA of FIG.
3 is an exploded perspective view showing a slim push switch device according to a second embodiment of the present invention.
4 is a cross-sectional view showing a slim push switch device according to a second embodiment of the present invention.
5 is an exploded perspective view showing a slim push switch device according to a third embodiment of the present invention.
Fig. 6 is a perspective view showing an assembled state of the slim push switch device according to the third embodiment of the present invention.
7 is a cross-sectional view showing a conventional push switch device.

EMBODIMENT OF THE INVENTION Hereinafter, the slim push switch device which concerns on embodiment of this invention is demonstrated in detail, referring drawings.

[First Embodiment]

1 and 2 illustrate a slim push switch device according to a first embodiment of the present invention, as shown in the upper and lower base films 110 and 120, the first and second conductive plates 130 and 140, and a spacer. It is composed of a film 150, a movable contact member 160 and a protective film 170.

First, the upper and lower base films 110 and 120 are made of a thin film having a thickness of 0.01 to 0.1 mm made of synthetic resin, for example, polyimide, which is an insulating material, and formed by processing by a press machine. The material of the upper and lower base films 110 and 120 is not limited to the above polyimide, and can be applied as long as it can be manufactured in an insulating and thin film form.

The first and second conductive plates 130 and 140 are interposed between the upper and lower base films 110 and 120, and are made of a thin plate member having a thickness of 0.01 to 0.1 mm made of a conductive material, for example, phosphor bronze, and It is formed by machining by machine. The outer shape and size of the first and second conductive plates 130 and 140 may be formed in the same manner as the upper and lower base films 110 and 120. The material is not limited to the phosphor bronze, but is conductive and thin. If it can manufacture, it is applicable. In addition, the front and rear surfaces of the first and second conductive plates 130 and 140 are attached to opposing surfaces of the upper and lower base films 110 and 120, respectively, and adhesives (not shown) to the opposing surfaces of the upper and lower base films 110 and 120. Can be attached by coating.

In addition, the first and second conductive plates 130 and 140 are provided with external contacts 131 and 141 and fixed contacts 132 and 142 for a switch function, respectively. The external contacts 131 and 141 are exposed to the outside of the upper and lower base films 110 and 120, and the fixed contacts 132 and 142 are exposed to the upper surface of the upper base film 110. In the first embodiment of the present invention, the external As an example, the contacts 131 and 141 are exposed to the bottom of the lower base film 120.

That is, the lower base film 120 has external exposure holes 121 and 122 formed at positions corresponding to the external contacts 131 and 141 of the first and second conductive plates 130 and 140, and through the external exposure holes 121 and 122. External contacts 131 and 141 of the first and second conductive plates 130 and 140 are exposed to the outside. At this time, the outer contact (131,141) of the first and second conductive plate (130,140) is preferably formed by protruding downward through the embossing process during the processing by the press machine. Therefore, the external contacts 131 and 141 may pass through the external exposure holes 121 and 122 to slightly protrude from the bottom surface of the lower base film 120, thereby facilitating electrical connection with external connection terminals (not shown).

In addition, internal exposure holes 111 and 112 are formed in the upper base film 110 at positions corresponding to the fixed contacts 132 and 142 of the first and second conductive plates 130 and 140, respectively. The fixed contacts 132 and 142 of the 130 and 140 are configured to be exposed to the upper surface of the upper base film 110 through the internal exposure holes 111 and 112 of the upper base film 110. In this case, the fixed contact points 132 and 142 of the first and second conductive plates 130 and 140 are formed by protruding upward through embossing during the processing by the press machine. Accordingly, the fixed contact points 132 and 142 may protrude from the upper surface of the upper base film 110 through the internal exposure holes 111 and 112, thereby facilitating electrical connection with the movable contact member 160 described later.

The spacer film 150 forms a space portion 151 attached to the upper surface of the upper base film 110 and accommodating the movable contact member 160. Like the upper and lower base films 110 and 120, the spacer film 150 is made of a thin film having a thickness of 0.01 to 0.1 mm made of synthetic resin, for example, polyimide, which is an insulating material, and is formed by processing by a press machine. The outer shape and size of the spacer film 150 are the same as the upper and lower base films 110 and 120, and may be attached by applying an adhesive (not shown) to the opposite surface to be attached to the upper surface of the upper base film 110. .

The movable contact member 160 is manufactured in a dome shape by processing a metal material having good elasticity and conductivity, for example, a stainless steel plate by a press machine, and is accommodated in the space portion 151 of the spacer film 150. As a result, the edge portion is connected to the fixed contact point 132 of the first conductive plate 130, and the center vertex portion is spaced apart from the fixed contact point 142 of the second conductive plate 140.

At this time, the dome-shaped movable contact member 160 has a variety of shapes, it can be used to select one of a variety of shapes, in accordance with the shape of the movable contact member 160, the first and second conductive plates (130, 140) ) Is also designed differently.

For example, like the movable contact member 160 applied to the first embodiment, in the case of a + -shape having four contact points a at intervals such as 90 degrees at the edge portion, the first conductive plate 130 has a center. A hole is formed in a ring shape so that the four contacts a of the movable contact member 160 can contact each other, and the second conductive plate 140 is positioned in the hole of the first conductive plate 130. It may be configured to form a plate of a size smaller than the hole as possible to be located below the apex of the movable contact member 160. Although not illustrated, the first and second conductive plates 130 and 140 may be similarly applied to the circular movable contact member in which the contact a is formed around the edge.

In addition, as shown in FIGS. 5 and 6, the movable contact member 160 and the first and second conductive plates 130 and 140 may include the movable contact member 360 applied to the third embodiment, which will be described later, and the first contact member. And the shapes of the second conductive plates 330 and 340 may be applied.

Referring back to FIGS. 1 and 2, the protective film 170 is attached to the top surface of the spacer film 150 and covers the top surface of the movable contact member 160 to prevent the movable contact member 160 from being separated. At the same time, it is to prevent the foreign matter from entering into the internal contact portion. Like the upper and lower base films 110 and 120, the protective film 170 is made of a thin film having a thickness of 0.01 to 0.1 mm made of an insulating material, for example, polyimide, and formed by processing by a press machine. The outer shape and size of the protective film 170 are the same as the upper and lower base films 110 and 120, and may be attached by applying an adhesive (not shown) to the opposite surface to be attached to the upper surface of the spacer film 150.

According to the slim push switch device according to the first embodiment of the present invention having such a configuration, the external contacts 131 and 141 of the first and second conductive plates 130 and 140 exposed to the bottom of the lower base film 120 may be exemplified. For example, it is used in electrical connection with a connection terminal on a circuit board.

Therefore, when the movable contact member 160 is pressed with a finger or the like from above, the vertex portion of the movable contact member 160 is inverted by the elastic contact of the movable contact member 160 with the protective film 170 downward. As shown in (b), the switch circuit is switched from off to on by abutting and contacting the fixed contact 142 of the second conductive plate 140. In addition, when the pressing operation force such as a finger is removed in such an on state, since the movable contact member 160 returns to its original shape by its elastic restoring force, the vertex portion of the movable contact member 160 is shown in Fig. 2 (a). As described above, the switch circuit is spaced apart from the fixed contact point 142 of the second conductive plate 140 so that the switch circuit returns to the off state.

The slim push switch device according to the first embodiment of the present invention operating as described above has a thin plate having first and second conductive plates 130 and 140 for a switch function, and upper and lower base films 110 and 120 for maintaining the same. Since it is the laminated structure which consists of a film of a member and a synthetic resin material, the thickness of a switch apparatus can be comprised as thin as possible about 0.5-1 mm. In addition, since each component is formed by processing a thin plate-like member and a film of a synthetic resin material by a press machine, and is assembled by fixing with an attachment means such as an adhesive, workability and productivity can be improved by unifying manufacturing and assembly operations.

Second Embodiment

3 and 4 show a slim push switch device according to a second embodiment of the present invention. In the slim push switch device of the second embodiment, in the configuration of the first embodiment, the fixed contacts 132 and 142 of the first and second conductive plates 130 and 140 between the upper base film 110 and 120 and the spacer film 150 are provided. There exists a difference in the structure which further attached the reinforcement board 180 in which the through-hole 181 which this exposure is made is made, and the other structure is the same as that of 1st Embodiment. Therefore, detailed description of the same parts will be omitted.

The reinforcement plate 180 is provided to structurally reinforce the slim push switch device, and is made of a thin plate member having a thickness of 0.01 to 0.1 mm having structural strength, and is formed by processing by a press machine. The outer shape and size of the reinforcement plate 180 is formed in the same manner as the upper and lower base films 110 and 120, and can be attached by applying an adhesive (not shown) to the attachment surface of the upper base film 110. .

In this case, when the reinforcing plate 180 is made of an insulating material, it is not necessary to insulate between the reinforcing plate 180 and the movable contact member 160. However, when the material of the reinforcing plate 180 is made of a conductive metal plate such as stainless steel, for example, it is necessary to electrically insulate between the reinforcing plate 180 and the movable contact member 160. To this end, the insulating film 190 having a through hole 191 is formed between the reinforcing plate 180 and the spacer film 150 to expose the fixed contacts 132 and 142 of the first and second conductive plates 130 and 140. It is preferable to attach.

Like the upper and lower base films 110 and 120, the insulating film 190 is made of a thin film having a thickness of 0.01 to 0.1 mm made of an insulating material, for example, polyimide, and formed by processing by a press machine. do. The outer shape and size of the insulating film 190 are the same as the upper and lower base films 110 and 120, and may be attached by applying an adhesive (not shown) to the opposite surface attached to the upper surface of the reinforcing plate 180.

According to the slim push switch device according to the second embodiment of the present invention, as the reinforcement plate 180 is further provided as compared with the first embodiment described above, the slim push switch device can be further reinforced structurally.

[Third Embodiment]

5 and 6 show a slim push switch device according to a third embodiment of the present invention. In the configuration of the first embodiment, the slim push switch device of the third embodiment includes a movable contact member having a different shape ( 360 and the first and second conductive plates (330, 340) is applied to replace the configuration is different.

In addition, a plurality of external contact pieces exposed laterally between upper and lower base films 310 and 320 at edges of the first and second conductive plates 330 and 340 without forming external exposure holes in the lower base film 320. There is a difference in the configuration of forming (331,341).

In addition, according to the third embodiment of the present invention, the reinforcing metal plate 380 interposed between the lower base film 320 and the first and second conductive plates 330 and 340, the reinforcing metal plate 380 and the first And an insulation film 390 interposed between the second conductive plates 330 and 340. Since the other structure is the same as that of 1st Embodiment mentioned above, the description about the same structure is abbreviate | omitted.

First, the movable contact member 360 is formed in a rectangular dome shape and applied to the shape having two contacts a at both opposing edge portions. Accordingly, the first conductive plate 330 and the second conductive plate 340 are disposed on the left and right sides of the two contacts a, and the first conductive plate 330 is the two contacts a. The fixed contact point 332 is extended to the position which can be contacted, and the 2nd conductive plate 340 has the structure which extended the fixed contact point 342 to the position which can contact the vertex part of the movable contact member 360. As shown in FIG. .

At this time, the movable contact member 360 may apply a "+" shaped movable contact member 160 applied to the first and second embodiments described above, and although not shown, a circular movable contact member may be used. You can also apply.

The reinforcing metal plate 380 is for structurally reinforcing the slim push switch device and maintaining the assembled state firmly. A thin plate member having a thickness of 0.01 to 0.1 mm made of a metal material having structural strength, for example, stainless steel. It is made of, and formed by processing by a press machine. The outer shape and size of the reinforcing metal plate 380 are formed in the same manner as the upper and lower base films 310 and 320, and may be attached by applying an adhesive (not shown) to the upper surface of the lower base film 320. .

In addition, the reinforcing metal plate 380 is formed with a plurality of bending fixing pieces 381 extending long at the edge portion, the bending fixing piece 381 is bent to cover a portion of the upper surface of the protective film 370. It is supposed to be.

The insulating film 390 is attached to the upper surface of the reinforcing metal plate 380 to insulate between the reinforcing metal plate 380 and the first and second conductive plates 330 and 340. Like the upper and lower base films 310 and 320, a thin film having a thickness of 0.01 to 0.1 mm made of an insulating resin, for example, polyimide, is formed by a press machine. The outer shape and size of the insulating film 390 are the same as the upper and lower base films 310 and 320, and may be attached by applying an adhesive (not shown) to the opposite surface to be attached to the upper surface of the reinforcing metal plate 380. .

According to the slim push switch device according to the third embodiment of the present invention, the external contact pieces 331 and 341 of the first and second conductive plates 330 and 340 exposed in the lateral direction between the upper and lower base films 310 and 320. For example, it is used in electrical connection with a connection terminal on a circuit board.

In addition, since the reinforcing metal plate 380 is further provided as compared with the first embodiment described above, the slim push switch device can be further reinforced structurally, and after the components are laminated and attached, the reinforcing metal plate 380 is provided. By bending the fixing piece 381 of the "c" shape to cover a part of the upper surface of the protective film 370, it is possible to more firmly maintain the fixed state of each component.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the present invention and not to be construed as limiting the scope of the present invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

110,120,310,320: Upper and lower base film
111,112: Internal exposure hole 121,122: External exposure hole
130,140,330,340: first and second conductive plates
131,141: External contact 132,142,332,342: Fixed contact
150,350: spacer film 151,351: space part
160,360: movable contact member 170,370: protective film
180: reinforcing plate 181,191: through hole
190,390: Insulation film 380: Reinforcing metal plate
381: Bending Fixation

Claims (7)

Upper and lower base films;
Interposed between the upper and lower base films, the front and rear surfaces are attached to opposite surfaces of the upper and lower base films, and the outer contact is exposed to the outside of the upper and lower base films, and the fixed contact is exposed to the upper surface of the upper base film. A pair of first and second conductive plates;
A dome-shaped movable contact member disposed at an edge portion in contact with a fixed contact of the first conductive plate, and a center vertex portion spaced apart from the fixed contact of the second conductive plate;
A spacer film attached to an upper surface of the upper base film and forming a space for accommodating the movable contact member; And
And a protective film attached to an upper surface of the spacer film to cover an upper surface of the movable contact member. The method of claim 1, wherein the upper base film is formed with an internal exposure hole at a position corresponding to the fixed contact of the first and second conductive plate, the fixed contact of the first and second conductive plate through the internal exposure hole Slim push switch device characterized in that exposed to the space portion of the spacer film. The slim push switch device of claim 2, further comprising a reinforcing plate having a through hole for exposing the fixed contact points of the first and second conductive plates between the upper base film and the spacer film. 4. The slim push switch device of claim 3, further comprising an insulating film having a through-hole formed between the reinforcing plate and the spacer film to expose the fixed contact points of the first and second conductive plates. 5. The method of claim 1, wherein the lower base film is formed with an external exposure hole at a position corresponding to the external contact of the first and second conductive plate, the external exposure hole to the outside of the first and second conductive plate Slim push switch device characterized in that the contact is exposed to the outside. The slim push switch device of claim 1, wherein a plurality of external contact pieces exposed in a lateral direction between upper and lower base films are formed at edges of the first and second conductive plates. The method of claim 1, further comprising a reinforcing metal plate interposed between the lower base film and the first and second conductive plate, and an insulating film interposed between the reinforcing metal plate and the first and second conductive plate, Slim push switch device characterized in that formed on the edge portion of the reinforcing metal plate a plurality of bending fixing pieces extending to cover a portion of the upper surface of the protective film.

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