JPH0544976Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a cord switch that is activated by pedal pressure, tentacle pressure, or the like.

<Problems to be solved by this invention> A matsutto switch which is constructed by inserting a long cord switch operated by pedal pressure inside a mats etc. was proposed in Utility Application No. 155696/1983. This proposal has the problem of being extremely expensive because an expensive pressurized conductive material is inserted over the entire length between the contact wires that constitute the code switch. In other words, since the pressurized conductive elastic body is formed by scattering conductive iron powder in the upper and lower thickness direction of an elastic body such as silicone rubber, there is a problem that it is extremely expensive as it requires many steps to manufacture. It was hot. The present invention attempts to solve such problems.

<Structure of the invention> The present invention provides a cord switch in which a pressurized conductive elastic body is inserted between two contact wires, and the outer surfaces of the two contact wires are covered with an insulator. A cord switch characterized in that the elastic body inserted between the elastic bodies is formed by an alternating arrangement of a pressurized conductive elastic body cut into many pieces and a large number of non-conductive elastic bodies cut longer than the pressurized conductive elastic body. It is in.

<Example> Examples will be described below based on the drawings.

As shown in FIGS. 3 to 5, the cord switch 1 consists of contact wires 1a and 1b formed by knitting conductive wires into a thin flat net shape, and an elastic body 2 of approximately the same shape and same thickness sandwiched between the contact wires 1a and 1b. and an insulator 7 that covers the outer surfaces of the contact wires 1a and 1b. The elastic body 2 is made of a large number of short wire rods made of silicone rubber, etc., with iron powder scattered in the upper and lower thickness direction, and when pressed by stepping pressure, the scattered iron powder comes into contact and forms the contact line 1.
a pressurized conductive elastic body 2a that conducts electricity between a and 1b;
It is formed by alternately arranging and connecting a large number of non-conductive elastic bodies 2b, which do not contain iron powder and are twice as long as the pressurized conductive part 2a. That is, the elastic body 2 is formed so that the pressurized conductive elastic bodies 2a are scattered in short lengths with the non-conductive elastic bodies 2b sandwiched therebetween.

As shown in FIGS. 1 and 2, this cord switch 1 is connected to an upper mat member 3 and a lower mat member 4.
A mat switch is obtained by inserting contact wires 1a and 1b into the meandering groove 5 provided between the two, facing the front and back surfaces of the upper and lower mat members, respectively. In addition, 6 in the figure
is the lead wire.

In the mat switch thus formed, the pressurized conductive elastic bodies 2a are scattered briefly in the cord switch 1, but because of the scattering, no matter which part of the upper mat member 3 is stepped on, one or two or more Since pressure is applied by stepping on the pressurized conductive elastic body 2a, the contact wires 1a and 1b conduct electricity without any problem and function as a switch.

<Effects of the invention> The present invention provides a pressurized conductive elastic body in which a large number of elastic bodies are cut and formed to be inserted between the contact lines constituting a cord switch as described above, and a pressurized conductive elastic body formed from the pressurized conductive elastic body. Since it is formed by alternating a large number of long non-conductive elastic bodies, the amount of pressurized conductive elastic bodies that require many manufacturing steps and are expensive can be reduced to less than half. This has the effect of significantly reducing the cost of the code switch.

[Brief explanation of the drawing]

Fig. 1 is a partial plan view showing a state in which wires are wired between the upper and lower mat members as a pine switch, Fig. 2 is a vertical front view of the same, Fig. 3 is a perspective view of the cord switch, and Fig. 4 is an enlarged sectional view of the same. FIG. 5 is a perspective view of each member, 1 is a cord switch, 1a, 1b are contact lines, 2 is an elastic body, 2a is a pressurized conductive elastic body,
2b is a non-conductive elastic body, 3 is an upper mat member, 4
is the lower mat member, 5 is the meandering groove, 6 is the lead wire,
7 is an insulator.

Claims (1)

[Scope of utility model registration request] A pressurized conductive elastic body is inserted between two contact wires,
In a cord switch in which the outer surfaces of the two contact wires are covered with an insulator, a pressurized conductive elastic body obtained by cutting the elastic body between the contact wires into a large number of pieces, and the pressurized conductive elastic body A cord switch characterized in that it is formed by an alternating arrangement of a large number of non-conductive elastic bodies cut into longer lengths.