CN201229176Y

CN201229176Y - Inertial shock sensor

Info

Publication number: CN201229176Y
Application number: CNU2008200295915U
Authority: CN
Inventors: 李涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-10
Filing date: 2008-07-10
Publication date: 2009-04-29
Anticipated expiration: 2018-07-10

Abstract

The utility model relates to an inertial shock sensor, which comprises an induction device and a sensing device. The utility model is characterized in that the induction device is formed by connecting an inertial sensing block 2 on a shaft 1 in a sliding way and fixing the shaft 1 on a supporting stand 6, and the sensing device is formed by fixing an upper contact striking flake 4 on a cradle 3 and fixing a lower contact striking flake 5 on a cradle 8. The upper contact striking flake 4 is connected with an output conductor 7, and the upper end of the lower contact striking flake 5 is moveably inarched on the inertial sensing block 2. The lower end of the upper contact striking flake 4 is fixed on a boss in the middle of the cradle 8. The inertial shock sensor proposed by the utility model has simple structure and low design requirement to each component part, and therefore, the cost superiority is obvious. In addition, the superiority of the structure of the inertial shock sensor leads the mechanical stability and the durability to be distinctively improved.

Description

The inertia impact sensor

Technical field

The utility model relates to a kind of inertia impact sensor, is a kind of device that the sensing motor vehicles collide the impact degree size that causes that is used for.

Background technology

In car crass research and practical field, the sensor kind of perception external impact force is a lot, it all adopts basic principle of inertia, and magnetic force structure, bobbin type crash sensor, roller type crash sensor, eccentric pendulum-type crash sensor, mercury cut-off formula crash sensor, strain ga(u)ge formula crash sensor etc. are arranged.For current general practical eccentric pendulum-type crash sensor, the title of submitting to as UKPO is disclosed in the patented claim (No.9715757.2) of " Collision Detection Device ", adopt a pendulum-type assembly, this pendulum-type assembly is designed to that swing component produces swing around the shaft when being subjected to external impact.When the degree of this swing surpasses preset threshold value, can promote one of two contact chips, make two contact chips be in contact with one another, produce corresponding transducing signal thus.This pendulum-type assembly comprises a plurality of parts, and the structure relative complex is higher relatively to the designing requirement of swing component (as the counterweight of pendulum etc.), and swing component uses its sensitivity reduction of back obvious through long-time.Disclosed in the Chinese patent 0126816.1 is a kind of inertia-type crash sensor, and its induction installation is made up of sensor, magnet and spheroid.Spheroid places the bottom of a conical cavity, and is placed in the top of the frame of magnet.These sensors respectively have characteristics, but weak point is also respectively arranged, and the complexity as a result that has is not easy to produce in batches; The reliability that has is not high, and practicality is bad; What have also is unfavorable for environmental protection, as mercury cut-off formula crash sensor.

The utility model content

The technical matters that solves

For fear of the deficiencies in the prior art part, the utility model proposes a kind of inertia impact sensor, be used for the retarded velocity of sensing motor vehicles, and retarded velocity is converted to the signal of control module identification to reach the purpose of control at collision impact.

Technical scheme

A kind of inertia impact sensor comprises induction installation and sensing device, it is characterized in that: described induction installation is that inertia sensor block 2 is slidingly connected on the axle 1, and axle 1 is fixed on the support 6; Described sensing device is that upper contact shell fragment 4 is fixed on the supporting seat 3, and on lower contact shell fragment 5 fixed supporting seats 8, upper contact shell fragment 4 is connected with output conductor 7; The upper end activity of described lower contact shell fragment 5 abuts against on the inertia sensor block 2; The lower end of described upper contact shell fragment 4 is fixed on the boss at supporting seat 8 middle parts.

The top of described upper contact shell fragment 4 is triangular structure at the height and position of axle 1, the direction of the contact shell fragment 5 that faces down on pinnacle.

Described upper contact shell fragment 4 and lower contact shell fragment 5 are gold-plated elastic copper sheet.

Beneficial effect

The utility model proposes a kind of inertia impact sensor, simple in structure, the designing requirement of each part is lower, so cost advantage is obvious.In addition, the simplification of structure makes its mechanical stability and durability significantly promote.

Description of drawings

Fig. 1: cross section view of the present utility model

Embodiment

Now in conjunction with the accompanying drawings the utility model is further described:

The primary structure of inertia impact sensor as shown in Figure 1, inertia sensor block 2 is bearing on the axle 1 slidably, and axle 1 is fixed on the support 6.Upper contact shell fragment 4 is fixed on the supporting seat 3, and the top of upper contact shell fragment 4 is triangular structure at the height and position of axle 1, the direction of the contact shell fragment 5 that faces down on pinnacle, and the upper contact shell fragment is connected with output conductor 7.On lower contact shell fragment 5 fixed supporting seats 8, the upper end activity abuts against on the inertia sensor block 2.Upper contact shell fragment 4 and lower contact shell fragment 5 are gold-plated elastic copper sheet, and contact is good reliable and stable.Said modules is connected to form the sensor main body part.Above-mentioned parts can be installed in the shell, and are connected to other system by the connector on housing top.

Above-mentioned inertia impact sensor is operated as follows.Inertia sensor block 2 moved when the retarded velocity that produces when collision happens was enough big, push contact the lower contact shell fragment to upper contact shell fragment 4, the distortion of lower contact shell fragment is bigger, the distortion of upper contact shell fragment is less, the contact of two shell fragments is closed, form the activation signal electric current, activation signal sends to other system by connector.

Claims

1. an inertia impact sensor comprises induction installation and sensing device, it is characterized in that: described induction installation is that inertia sensor block (2) is slidingly connected on the axle (1), and axle 1 is fixed on the support (6); Described sensing device is that upper contact shell fragment (4) is fixed on the supporting seat (3), and on lower contact shell fragment (5) fixed supporting seat (8), upper contact shell fragment (4) is connected with output conductor (7); The upper end activity of described lower contact shell fragment (5) abuts against on the inertia sensor block (2); The lower end of described upper contact shell fragment (4) is fixed on the positive stop lug boss at supporting seat (8) middle part.

2. inertia impact sensor according to claim 1 is characterized in that: the top of described upper contact shell fragment (4) is triangular structure at the height and position of axle (1), the direction of contact shell fragment (5) that face down on pinnacle.

3. inertia impact sensor according to claim 1 and 2 is characterized in that: described upper contact shell fragment (4) and lower contact shell fragment (5) are gold-plated elastic copper sheet.