JPS60138815A - Pressure switch and method of producing same - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to an improvement of a pressure switch such as a mud switch, and its gist is that a pressure conductive elastic body is inserted between flat mesh wires in a sandwich-like manner, and then covered with an elastic resin to form an integrated body. . Conventionally, this type of pressure switch is shown in Fig. 1(a),
As shown in (b), 0] is an insulating substrate,
A pair of electrodes 3.4 are printed and wired on the substrate l. A pressurized conductive elastic body 6 is placed on the pair of electrodes 3.4 so as to bridge them, and a conductor 7 is placed on each of the pressurized conductive elastic bodies 6 so as to overlap. Then, the upper surfaces thereof are completely covered with an insulating pressure plate 2. In this case, the insulating support part side is located between the insulating substrate l and the insulating press 2 except where the switch element 5 consisting of the pressure conductor 1, the elastic body 6 and the conductor 7 is arranged. 8 is inserted, and the conductive elastic body 6 and the conductor 7 are pressed by a fixing member 9 made of vinyl tape or the like, which has both ends fixed to the corresponding contact surfaces of the insulating substrate 1 and the insulating support member 8. Fix it as if it were one body. The pressurized conductive elastic body 6 is made of silicone rubber with metal powder embedded in the vertical direction, so when the pressure plate 2 is pressed, the pressing force is applied to the pressurized conductive elastic body 6 and it becomes conductive. As a result, conduction occurs between the pair of electrodes 3.4, and power is supplied to a drive device (not shown) to open a nearby door, for example. However, such a conventional pressure switch has the following problems. 1) In this type of pressure switch, the pressure 4 frost elastic body 6 and the conductor 7 are always in close contact with each other, resulting in a conductive state. However, since the main body of the pressurized conductive elastic body 6 is made of silicone rubber and is exfoliated, it is impossible to bond it with a general epoxy conductive adhesive. Silicone-based conductive adhesives also exist, but they have the drawbacks of being expensive and that the resistance value increases over time.
It is practically impossible to directly bond the conductor 7 and the conductive elastic body 6. Therefore, in the past, the pressurized conductive elastic body 6 and The conductor 7 is fixed to an insulating substrate IK. However, in a device such as a mud switch where irregular pressing force is repeatedly applied, it is actually difficult to prevent the two from shifting on the fixed part side 9 as described above. 2) Conventional pressure switches have printed wiring for the % terminals on an insulating substrate (polyethylene film), but printed wiring is expensive, which makes this type of pressure switch expensive and difficult to use. is hindering the expansion of 3) Cross-link one two-item element on one pair of electrodes,
Since it has to be fixed on the fixing part side, the manufacturing process is that much more difficult and inefficient. The present invention is uniquely designed to solve the above-mentioned problems existing in conventional pressure switches. The present invention will be explained according to the first embodiment shown in FIGS. FIG. 2 shows a 1° grid line constituting the electrode of the present invention. The flat mesh wire 1o is copper MJ 6 metal wire 301
A mesh product made by making slits with a forming tool in a band-shaped scrap metal mesh product or a metal plate surrounded by a mesh, and then pulling the metal plate in this state to enlarge the slits to form fine mesh (for example, manufactured by Taiyo Wire Mesh Co., Ltd.) , precision expanded metal), etc. The pressurized switch according to the present invention is shown in FIG. 3(a). As shown in FIG.
．． 1 (inserted in a sandwich-like manner between 5 parts) and covered with an elastic resin 11 to form a single body. That is, for example, as shown in FIG. ``1'' between the upper surfaces forms a four part 14 larger than the width of the flat screen wire 10゛

[7] In the concave part of the mold 13, 14, a flat mesh wire]O", a pressurized conductive elastic body 6° flat M wire]0 are sequentially placed,
After arranging them so that they overlap, insulating Iil+1 resin 11 is poured in. Thereby, the flat mesh wire 10. The outer side of the switch element 12 consisting of the elastic elastic body 6 and the flat mesh wire 10 is covered with an elastic resin layer 11, and the mesh of the flat mesh wire 10 is also covered with the elastic resin layer 11, thereby forming a switch. The element 12 is made into a solid body through an elastic resin.In this case, the elastic resin can be silicone-based adhesive, and since it is sufficient that it can be bonded to the flat mesh wire by 1J, epoxy-based adhesive, Other adhesives are sufficient. In such a configuration, when a pressing force P at K in FIG. 3(b) is applied, the pressing force causes the pressurized conductive elastic body 6 to
conducts, and conducts between the electrodes 10 and 30.
' has the same shape as when protrusions are formed over the entire surface, and since the mesh is filled with elastic resin with sufficient elasticity, it is compared to the case where a flat plate is used. ,
It has good switch sensitivity and, according to experiments conducted by the inventor, has high durability. Therefore, the strip-shaped switch element 12 according to the present invention is
A highly durable mud switch with good switch sensitivity can be realized simply by arranging it as shown in the figure. However, in this case, as shown in FIG.
9L, it is difficult to arrange the switch element part of the bending part 19 in a free state while maintaining the horizontal position, and there is a possibility that the switch element part cannot function as a switch element. Therefore, in such a case, Fig. 4 (C)
The switch element 12 is formed by the method shown in FIG.
Recesses 16 of the same size are formed on both sides K of the recess 17, preferably alternately.
, 16'. The flat mesh wire lO'', the pressurized conductive elastic body 6 and the flat mesh wire 10 are placed in order in the recess J7 so as to overlap, and after tightening, an insulating material is placed in the recess 1 (i, J6'', 17). By pouring the elastic resin 11, a switch element integrally made of elastic resin is manufactured, with alternating elastic #1 fat convex layers of A being formed on both sides. For example, by the action of the elastic resin protrusions formed alternately on both sides of the switch element and the four parts adjacent thereto, the width of the flat mesh wire 10.10" is
If you keep it to the level of 3 dragons, it will be recognized as great by experience. In addition, according to the method shown in Fig. 4 (c) K, the recess 17 functions as a positioner for the plain mesh wire 1o, so that the plain mesh wire can realize a straight switch element over the entire length of the switch element Q, which is preferable. . With such a configuration, one switch element 12 can be connected to the fifth switch element 12.
A guide body 200 having a notch 18 with a bent portion 19 shown in the figure can be easily horizontally arranged along the notch 18 and can exhibit sufficient switch performance over the entire surface. In this case, The guide body 20 is made of an elastic body such as sponge, and the entire upper surface of the guide body 20 is covered with an insulating pressure plate 2.
A step is provided at the upper surface level of the switch element 2 and the kite body 20 so that the weight of the insulated pressure plate 2 is supported by the kite body 20 when not pressed. If the @ source is set so that the pressing force is applied to the elastic body and conduction occurs, a pressurized switch that does not malfunction can be realized. Figure 6 shows still another embodiment of the present invention. Yes, also in this embodiment, the pressurized conductive elastic body 6 is inserted in a sandwich-like manner between the flat mesh wires 10 and 30', and the elastic resin 1
The point in which shares were invested and turned into a corporate body in 1 is the same as in the above-mentioned embodiment 1 and 1j K, but in this embodiment, one of the T@
The flat mesh wire 0 which is a pole is arranged over the entire length in the longitudinal direction of the switch element 12 to serve as a common electrode, and the other electrode, which is a plain mesh wire 10', is divided as shown as lO;~lOd'. Multiple pieces are arranged. If this is done, each different electrode 10a -
10a By applying a pressure of K, power is applied to different desired circuits, making it possible to control multiple devices with a single switch element.This field of application is the tie-down of elevators. Drive switch or unmanned transport M
The main effects of the invention, which can include switch elements built into dampers such as dampers, are as follows. 1) According to the present invention, there is no need to print expensive electrode wiring on an insulating substrate as in the conventional method, so the manufacturing process is simplified and the manufacturing cost is significantly reduced. 0 2) Flat mesh wire JIJ that holds the pressurized conductive elastic body 6. ] By using 0 as an electrode, one switch element is integrated with elastic resin, making it possible to integrate one switch element with an elastic resin. This eliminates the need to remove the fixed part of the switch as in the conventional case, and also makes it possible to achieve high switch sensitivity. A durable switch element is realized using koji, and as in the past,
There is no need to take the trouble of bridging each switch element to a pair of chikoku clays. 3) In addition, it is possible to control multiple electric circuits with - 3 switch elements, and the desired length can be adjusted as needed. Its technical effects are remarkable, such as the fact that it is only necessary to arrange the strip-shaped body or the rectangular body without bending or bending. The pressure switch according to the present invention can be used as a mud switch for automatic doors, or as a sensor for an intrusion alarm device. It can be used as a built-in switch in the damper of an automatic guided vehicle, a switch for driving elevators up and down, and a keyboard switch for calculators, etc., and its uses are wide-ranging.

[Brief explanation of drawings]

Fig. m1 (a) is a plan view of a conventional pressure switch with the insulating pressure plate removed, and Fig. 1 (b) is a diagram of set 1 (a).
2 is a sectional view of the pressurizing switch part in K, FIG. 2 is a plan view showing the flat mesh wire used as an electrode in the present invention, FIG. ) A sectional view taken along the line A-a' in Figure 3(a), Figure 4(a) is a plan view for explaining an example of the manufacturing method of the pressure switch according to the present invention, and Figure 4(b) is a cross-sectional view taken along line A-a' in Figure 3(a). 4. Cross-sectional view taken along line B-B' in Figure 4 (a), fit! 4(c) is a plan view for explaining another example of the manufacturing method of the pressure switch according to the present invention, and FIG. 5 is a plan view showing an example of the arrangement of the pressure switch according to the present invention. Figure 6 is of the present invention. It is a longitudinal cross-sectional view showing still another example. 2... Pressure plate, 6... Pressure conductive elastic body, 10.1
0'... Plain mesh wire, Joa-io&... Intermittently arranged plain mesh wire, 11... Elastic resin, 15...
Mold, 16.16°... Recesses formed alternately on both sides of the recess 17, 17... Recess between upper surfaces having approximately the same width as the flat mesh line, 18... Notch, 19. ...Folded portion of notch, 20...Guide member Fig. 1 (a) 10 Fig. 1 () +) Fig. 2 Fig. 3 (-) 8゛" Fig. 3 (b) Figure 4 (a) Figure 5 1 and Figure 6

Claims (1)

[Scope of Claims] l) A pressurized switch □ consisting of a pressurized conduit and a resilient elastic body inserted between flat mesh wires in the form of a sandwich, covered with an elastic resin, and integrated. 2) Pressurized conductive. In a product in which an elastic elastic body is inserted between flat mesh wires in a sandwich shape and covered with an elastic resin to be integrated,
The flat screen wire on one side is continuous as one piece, and the other side (
1) A pressurized switch consisting of flat mesh wires arranged intermittently; 3) A pressurized conductive elastic body is inserted between the flat mesh wires in a sandwich shape and covered with an elastic resin to form a single unit. 4) A pressurized conductive elastic body is inserted in a sandwich-like manner between flat mesh wires, and an elastic resin is The switch element is made of an elastic body such as a sponge, which is coated with a switch element that is integrated into a band shape, and has uneven parts formed on both sides of the band-shaped body, and a notch part with a bent part. a guide member, the switch element is disposed within the notch of the guide member, and the weight of the pressure plate disposed on the upper surface of the guide member when not pressed is supported by the guide member. 5) A pressurized switch consisting of a mold having four parts having substantially the same width as the flat mesh wire between the upper surfaces along the longitudinal center part, and the four parts being alternately formed on both sides of the recessed part. After arranging a band-shaped flat mesh wire in the recess in the longitudinal center of the mold, a pressurized conductive elastic body is placed so as to overlap the flat mesh wire, and then the pressurized conductive elastic body is Place a flat mesh wire on top so that it overlaps with it, and in this state, install it so that the top surface level of the flat mesh wire is slightly lower than the levels on both sides of the mold,
Method 0 of manufacturing a pressure switch characterized by pouring elastic resin into the four parts of the mold.