CN201185153Y

CN201185153Y - Pressure sensor

Info

Publication number: CN201185153Y
Application number: CNU2008200835400U
Authority: CN
Inventors: 孔庆满
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-22
Filing date: 2008-02-22
Publication date: 2009-01-21
Anticipated expiration: 2018-02-22

Abstract

The utility model relates to a pressure sensor which is characterized by comprising an elastic body (1) of an insulating tubular shape; the inner wall of the elastic body of an insulating tubular shape is provided with two bus bars (2) which are arranged along the longitudinal direction of the elastic body of an insulating tubular shape; under a natural state, the two bus bars are mutually spaced; under a state that the elastic body of an insulating tubular shape is squeezed by an outer force, the two bus bars are mutually contacted and connected. Compared with the prior art, the pressure sensor of the utility model has the advantages that the inner wall of the elastic body of an insulating tubular shape is provided with two bus bars which are mutually spaced under the natural state; besides, the two bus bars can be contacted for conduction under the state that the elastic body of an insulating tubular shape is squeezed by the outer force; the structure is simple and reasonable; the manufacture cost is lower; the pressure sensor can be broadly applied to the machines like electric door, automatic induction door, garage door, industrial door, commercial door as well as public safety occasions.

Description

A kind of pressure sensor

Technical field

The utility model relates to a kind of pressure sensor.

Background technology

Have the pressure sensor of machineries such as being used for Electrically operated gate, automatic induction door, garage door, industrial door, commercial door and public safety occasion now, general complex structure, cost of manufacture is higher.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of simple in structure, pressure sensor that cost is low at above-mentioned prior art.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this pressure sensor, it is characterized in that: comprise the insulative tubular elastic body, be provided with two buss that vertically distribute along the insulative tubular elastic body at described insulative tubular elastic body's inwall, under the nature, described two buss are spaced from each other, be subjected under the external force squeezed state described insulative tubular elastic body, described two buss are in contact with one another electrical connection.

In order to save cost and to be beneficial to production and processing, above-mentioned insulative tubular elastic body generally adopts the Silicon-On-Insulator sebific duct, and two buss rise and then adopt conductive rubber.

For mechanical strength and the pull resistance that strengthens two buss, the problem that sensitivity reduces that causes setting out that the resistance that two buss of balance cause because of length increases is bigger than normal as improvement, is embedded with at least one conductor wire respectively in the middle of above-mentioned two buss.

Further improve, above-mentioned insulative tubular elastic body's cross section ovalize, the cross section of two above-mentioned buss is circular arc type, and the inwall along the transverse correspondence is symmetrical arranged in oval insulative tubular elastic body inside.

Compared with prior art, advantage of the present utility model is: at tubulose insulation elastic body inwall the bus of isolating mutually under two natures is set, and two buss can be subjected to contact conduction under the external force extruding the tubulose elastic body of insulating, simple and reasonable, cost of manufacture is lower, can be widely used in machinery and public safety occasions such as Electrically operated gate, automatic induction door, garage door, industrial door, commercial door;

Description of drawings

Fig. 1 is the utility model embodiment perspective view;

Fig. 2 is the utility model embodiment sectional view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Pressure sensor as shown in Figure 1, it comprises insulative tubular elastic body 1, be provided with two buss 2 that vertically distribute along the insulative tubular elastic body at described insulative tubular elastic body's inwall, under the nature, described two buss 2 are spaced from each other, under described insulative tubular elastic body was subjected to state that external force is extruded, described two buss 2 were in contact with one another electrical connection.Insulative tubular elastic body generally adopts the Silicon-On-Insulator glue material, its cross section can be circular or other shapes, in the present embodiment, insulative tubular elastic body is the Silicon-On-Insulator sebific duct, its cross section ovalize, two buss then adopt conductive rubber, and its cross section is circular arc type, and the inwall in oval insulative tubular elastic body inside along the transverse correspondence is symmetrical arranged, and relatively is beneficial to production and processing.

Be embedded with at least one conductor wire 3 respectively in the middle of two above-mentioned buss, conductor wire can adopt the wire of copper wire or other easy conductives, its effect is mechanical strength and the pull resistance that strengthens conductive rubber strip, and the balance conductive rubber strip increases the resistance that the causes problem that causes trigger sensitivity to reduce bigger than normal because of length.During actual the use, the length of rubber bus can cut according to actual practical length, and the end after cutting adds the sealing of insulation back, and the other end adds two electrode cable outputs.

The operation principle of the pressure sensor that the utility model provides is equivalent to a switch, and after external force was pushed oval insulative tubular elastic body, two buss of inside pipe wall are closed to be electrically connected.

Claims

1, a kind of pressure sensor, it is characterized in that: comprise insulative tubular elastic body (1), be provided with two buss (2) that vertically distribute along the insulative tubular elastic body at described insulative tubular elastic body's inwall, under the nature, described two buss are spaced from each other, be subjected under the external force squeezed state described insulative tubular elastic body, described two buss are in contact with one another electrical connection.

2, pressure sensor according to claim 1 is characterized in that: be embedded with at least one conductor wire (3) respectively in the middle of described two buss.

3, pressure sensor according to claim 1 and 2, it is characterized in that: described insulative tubular elastic body's cross section ovalize, the cross section of described two buss is circular arc type, and the inwall along the transverse correspondence is symmetrical arranged in oval insulative tubular elastic body inside.