JPH04126172U - Shock sensitive detection device - Google Patents

Abstract

(57) [Summary] [Purpose] Due to the detachment of the metal sphere at the time of impact and the shape of the terminal side that is difficult to deform, it is possible to perform instantaneous sensing with almost no time lag, and it is also possible to perform sensitive detection from the side. To provide an impact sensitive detection device which can freely perform sensitive detection in the event of an impact and at the same time can be made compact by making the product shorter in the axial direction. [Structure] Inside the holding frame (1), there is a magnetic member (4) that straddles the current-carrying terminals (2) (2'), and a magnetic member (4) that is attracted to the magnetic member and constantly contacts the current-carrying terminals (2) (2'). A magnetic metal sphere (3) is placed inside to turn it on, and the sphere is attached to the holding frame (1).
The current-carrying terminals (2) (2') are connected to an external sensor circuit while maintaining a small distance (5) from the inner peripheral surface of the terminal.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is based on an air system that is generally installed as a lifesaving measure in the event of a car impact. The present invention relates to an improvement in the structure of a shock sensitive detection device for reverse operation.

0002

[Conventional technology]

Conventionally, this type of sensitive detection device uses a holding frame (11) as shown in FIG. With the metal sphere (13) adsorbed to the magnetic member (14) fixed inside, It is constructed by providing energizing terminals (12) (12') in a bullet shape at a distance (15) from both sides. Ta.

0003

[Problem that the idea aims to solve]

However, in such conventional technology, the damage that occurs to the sphere (13) during impact A structure in which the terminals (12) (12') are touched and energized due to inertia and are sensed for detection. Due to the structure, the distance (15) is required to a certain extent to prevent airbag This results in a time lag in the operation of the shock absorber, and only shocks in a certain direction can be detected. In addition, the elastic shape of the terminals (12) (12') causes the distance (15) to expand. This causes errors in sensitive detection, and at the same time, there are problems such as making the product generally long in the axial direction. They tended to have problems.

0004 The present invention was devised in view of the above-mentioned problems of the prior art. It eliminates time lag and enables instantaneous detection, and also enables sensitive detection from the side. At the same time, it is possible to make the product compact by making it shorter in the axial direction. The purpose of this study is to propose a shock-sensitive detection device.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the present invention has electric terminals protruding on the left and right sides inside the holding frame. At the same time, the magnetic member is fixed across the magnetic member, and the current-carrying end is constantly A metal sphere with magnetism that turns on when in contact with the child is placed at a minute distance from the inner peripheral surface of the holding frame. A shock absorber configured by holding and internally connecting the current-carrying terminal to an external sensor circuit. The gist of this paper is a sensitive detection device.

[0006]

[Effect]

Since the present invention is constructed in this way, the metal sphere is constantly in contact with the current-carrying terminal. By sensitively detecting the on state, it is possible to prevent the ball from detaching upon impact. Instant response with almost no time lag due to the shape of the terminal side that does not cause deformation It is also possible to perform sensitive detection in the lateral direction, and at the same time, it is possible to This means that the product can be made compact by making it shorter in the axial direction.

[0007]

【Example】

Below, embodiments of the present invention will be explained based on the drawings. The longitudinal cross-sectional view of the detection device, Figures 3 and 4 are the respective sensor circuit diagrams, and (1) is It is a holding frame made of insulating material, and inside it is connected to an external sensor circuit. Protruding current-carrying terminals (2) (2') and fixing a magnetic member (4) across the terminals, , in contact with the current-carrying terminal (2) (2'), the magnetic member is made of gold, such as gold-plated steel that has magnetism. When the sphere (3) is attracted and turned on, there is a slight gap between it and the inner peripheral surface of the holding frame (1). (5) It is made by holding and internally. And when an external impact occurs, the ball (3) is released. The airbag is inflated by turning it off and controlling the sensor circuit based on the off signal. This is what activates the output. Note that (F) is a light emitting diode and a phototransistor. It is a photo coupler with a built-in, and (S) is a sensor switch.

[0008]

[Effect of the idea]

As explained above, the impact-sensitive detection device according to the present invention continuously detects the metal sphere (3). Since it is in contact with the current-carrying terminal (2) (2') and is in the on state, the sphere's impact during impact is The time lag can be almost eliminated by detachment and the shape of the terminal (2) (2') side that does not cause deformation. This allows for instantaneous sensitive detection without the need for the sensor, and also enables automatic sensitive detection in the lateral direction. At the same time, the product can be shortened in the axial direction to make it more compact. This is an extremely useful shock sensitive detection device.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an impact sensitive detection device showing an embodiment of the present invention.

FIG. 2 is a longitudinal cross-sectional view of a conventional shock sensitive detection device.

FIG. 3 is a sensor circuit diagram connected to FIG. 1;

FIG. 4 is a diagram corresponding to FIG. 3 showing another embodiment.

[Explanation of symbols]

1 Holding frame 2, 2' Current-carrying terminal 3 Metal sphere 4 Magnetic member 5 Minute interval

Claims (1)

[Scope of utility model registration request] [Claim 1] A magnetic member (4) is fixed inside the holding frame (1) across the left and right protruding current-carrying terminals (2), (2'), and is attracted by the magnetic member and constantly energized. Terminal(2)(2
') A metal sphere (3) with magnetism that turns on when in contact with
The shock is characterized in that the holding frame (1) is internally held at a slight interval (5) from the inner circumferential surface of the holding frame (1), and the current-carrying terminals (2) (2') are connected to an external sensor circuit. Sensitive detection device.