JPS6243017A - Mat-like switch - 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 Field of Application on Cala] This invention relates to a mat-like switch for automatic doors, factories, etc. For factory use, when the arm of a robot or press machine turns, a mat-like switch is used so that when a person steps on the turning space, conducts electricity and stops the arm from operating, or an unmanned switch. Incorporated into the bumper of transport vehicles, unmanned forklifts, etc.
This bumper is used as a mat-like switch to stop operation if someone collides with it.

[Conventional technology]

In the conventional mat-like switch, as shown in FIGS. 6 and 7, outer covering materials 102 and 102 are bonded to the top and bottom of a polyurethane foam material 101 having a large number of holes 100, and each hole of the polyurethane foam material 101 is bonded to the top and bottom of the polyurethane foam material 101. L 100 (7) Upper and lower two flat mllli poles 103 and 104 are arranged vertically and horizontally, and the upper flat wire electrode 103 and the lower plain braided wire electrode 104 are brought into contact with each other to conduct electricity. Lead wire 10
3A and 104A are connected to each electrode 103 and 104.

(Problem to be solved) When various objects are dropped onto such a mat-like switch, sharp parts of the object may cause the flat knit m''I11 pole 103
．． 104 may be cut, and Hei 1 @ [Koku 103.10
If one of the parts 4 is cut, it will not function properly. Also, flat version 11! There was also a risk that poor insulation would occur due to fuzz in the wires of the electrodes 103 and 104. Furthermore, the upper and lower outer covering materials 102.102 and the flat sm'R machine 10
There was also a risk that the adhesion with No. 3 and 104 would peel off, resulting in poor insulation.

Therefore, this invention can avoid the state in which the switch Il function is disabled even if a part of the electrode is damaged, eliminate insulation defects caused by the fuzz of the plain braided wire, and prevent the adhesive from peeling off from the outer covering material. The purpose is to provide a mat-like switch.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention forms a large number of holes in the vertical direction of a plate-shaped elastic material having insulating properties,
In this mat-like switch, the upper and lower surfaces of the elastic material are covered with an outer cover material, and electrodes are arranged on the inner surface of the outer cover material so as to be located above and below the porous hole, and the MN is composed of flexible planar electrodes. be.

(Function) When a load is applied to the mat-like switch of the present invention, the upper planar electrode is bent, the elastic material is compressed, and the upper and lower planar electrodes come into contact and become conductive. Even if a portion is broken, since the entire surface 141i is a conductor, if the upper and lower surface electrodes in the pores are brought into contact with each other, conduction is ensured.

(Embodiments) Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention, in which a large number of holes 2 are formed in the vertical direction of an insulating plate-like elastic material 1, and planar electrodes 3 are arranged above and below the elastic material 1. .3, and outer covering materials 4.4 are glued on top and bottom of these planar electrodes 3.3. As the elastic material 1, a material such as polyurethane foam was used, and as the planar electrode 3, conductive rubber was used in this embodiment. Insulating rubber was used as the outer covering material 4, but
Other materials that are insulating and flexible can be used. As the conductive rubber, NBR-based synthetic rubber was used. The flexible planar structure 1ti3.3 using conductive rubber is constructed as shown in FIG. Since the outer cover material 4 and the planar electrode 3 can be bonded over a relatively wide area,
There is little risk of peeling. When a load is applied to the mat-like switch configured in this way, the upper cover material 4 and the planar electrode 3 are bent, the middle elastic material 1 is compressed, and the two planar N-shaped electrodes located above and below the hole 2 are bent. 3 and 3 come into contact and become conductive.

In the second example shown in FIG. 3, conductive rubber is used as the planar electrode 3 in the same manner as in the first embodiment, and a large number of uneven portions 3A, 3A are formed on both of the surfaces facing each other. be.

Two planes! The uneven portion 3A may be formed only on one surface of the poles 3, 3. Unevenness 111s3
If A is present either above or below the hole 2, it becomes easier to make contact between the upper and lower planar electrodes 3, 3.

In the third embodiment shown in FIG. 4, as a planar electrode 3, a fiber material 31 is impregnated with a liquid in which latex is mixed with a reinforcing material having excellent electrical conductivity such as acetylene black or Ketjen black, and dried. 41 fiber. Acetylene black has great reinforcing properties, high modulus, and excellent electrical conductivity. In the drawing, the mutually opposing surfaces of the planar electrodes 3 located on the upper and lower surfaces of the hole 2 are drawn flat, but because the fiber material 31 is used, the opposing surfaces have minute irregularities. Therefore, it is possible to achieve the same effect as the embodiment shown in the third factor.

FIG. 5 shows lead wires 5.3 drawn out from each planar electrode 3.3.
5 is shown.

The mat-like switch of the present invention can be installed not only on the floors of factories or automatic door entrances, but also in the bumper of an automatic guided vehicle. When configured as a bumper for an automatic guided vehicle, when a human body comes into contact with this cloak-shaped switch, the upper and lower planar electrodes ff13.3 come into contact and become conductive, thereby stopping the traveling of the automatic guided vehicle. can. In addition, if this mat-like switch is laid out on the floor of a dangerous area where a robot or the like is working, when a person enters the dangerous area and steps on the mat-like switch, the upper and lower planar electrodes It is also possible to make contact with .3 and make it conductive, thereby stopping the operation of the robot or the like.

(Effects) As explained above, the present invention forms a large number of holes in the vertical direction of an insulating plate-shaped elastic material, covers the upper and lower surfaces of this elastic material with an outer covering material, and On the inner surface of the outer covering material so that it is located above and below the 8 holes? ? ! The mat-like switch with a tub is constructed from a planar electrode with flexibility, so it can be turned off like a conventional flat P5 wire. It will not become inoperable due to +i, and will function normally even if a part of the sheet electrode i is cut off. Also, is it planar? 1!
Since the pole and outer covering material can be bonded over a relatively wide area, there is little chance of peeling. Overall, according to the present invention, the function as a switch can be performed reliably and accurately, and the CM property can be improved.

When the planar electrode is made of a conductive film, it has excellent flexibility and durability. Furthermore, the planar electrode is made of conductive fibers impregnated with latex mixed with a reinforcing material with excellent electrical conductivity such as acetylene black 9 or Ketjen black, and then dried. Koshino Nia) Now, e! It can be made into a.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the first embodiment of this invention, and the second
The figure shows a cross-sectional view of the assembled state, FIG. 3 shows a cross-sectional view of the second embodiment, W44 is a cross-sectional view of the third example, FIG. 6 factors (a plan view showing a conventional example, and Fig. 7 is a cross-sectional view at the hole location in Fig. 6. Go... elastic material, 2... hole, 3... ...Surface shape, 11... Outer cover material. Applicant: Brides Co., Ltd. Agent: Patent attorney Masu 1) Takeo No. 3! ! I Figure 4 111F5 Figure 6 Figure 7

Claims (1)

[Scope of Claims] 1. A large number of holes are formed in the vertical direction of a plate-shaped elastic material having insulating properties, and the upper and lower surfaces of this elastic material are covered with an outer cover material,
1. A mat-like switch in which electrodes are arranged on the inner surface of a jacket material so as to be located above and below each hole, characterized in that the electrodes are composed of flexible planar electrodes. 2. The mat-like switch according to claim 1, wherein the planar electrode is made of conductive rubber. 3. The planar electrode is characterized in that it is composed of conductive fibers obtained by impregnating a fiber material with a solution of latex mixed with a reinforcing agent with excellent electrical conductivity such as acetylene black or Ketjen black, and drying the resultant material. A mat-like switch according to claim 1. 4. The mat-like switch according to claim 2, wherein a large number of concave and convex portions are formed on at least one mutually opposing surface of the planar electrode made of conductive rubber.