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Flexion type acceleration switch

An acceleration switch and acceleration technology, applied in the field of inertial sensing, to achieve the effect of small size, large contact force, and filtering out high-frequency interference

Inactive Publication Date: 2010-06-23
XIDIAN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is: to solve the deficiencies in the use environment and functions of the existing acceleration switch device, and to provide a sensor with accurate acceleration threshold sensing capability, large contact force, stable contact, anti-vibration interference, and anti-electromagnetic interference. buckling acceleration switch

Method used

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  • Flexion type acceleration switch
  • Flexion type acceleration switch
  • Flexion type acceleration switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] according to figure 1 and figure 2 The represented switch of the present invention includes an insulating encapsulation shell 3, which is connected to a mass block 2 with contacts through a double-layer inclined support beam 1, and a height-adjustable contact 6 is installed at the bottom of the insulating encapsulation shell directly under the mass block 2, and adjusts the The height of the contact 6 is adjusted with the screw thread, the fixed contact on the mass block 2 and the height-adjustable contact 6 are led out by the wire 5 and connected to the control circuit, and the whole device is installed with the bolt 7.

[0035]When the switch is subjected to acceleration from the contact axis direction, when the acceleration signal is lower than the set threshold, the switch does not act; when the acceleration signal is greater than or equal to the threshold, the mass 2 with contacts moves in the direction of acceleration, and quickly interacts with The adjustable co...

Embodiment 2

[0039] Figure 9a and Figure 9b It is a schematic diagram of the second technical solution of the embodiment of the present invention. This embodiment adopts a new contact structure form on the basis of the first embodiment. The contacts on the mass block 2 are omitted, and two height-adjustable contacts 6 are provided on the Contacts 6-1 and 6-2, the contacts 6-1 and 6-2 are separated by an insulating sleeve 6-3, when the switch is closed, the mass 2 and the two contacts are connected in a bridge manner. On, the circuit is turned on.

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Abstract

The invention relates to a flexion type acceleration switch. In the switch, a tilted support beam, a mass block and a height adjustable contact component in a group are arranged in an insulation encapsulated shell of the switch, wherein the tilted support beam is of a double layer structure; two ends of the support beam are fixed at two sides of the shell; the double layer tilted support beam supports the mass block in a certain angle alpha to ensure that the mass block is balanced and suspended in an inner cavity of the insulation encapsulated shell; a contact is arranged on the bottom of the mass block; the height adjustable contact is arranged on the insulation encapsulated shell right under the mass block, and remains a certain distance from the mass block; when the double-layered tilted support beam is bent under the action of exterior threshold inertia force, the mass block moves along the exterior acceleration velocity to ensure that elastic contact is formed between the contact on the mass block and the height adjustable contact, and extrudes the contact to form stable contact by means of flexion elastic force. The acceleration switch is characterized by simple structure, adjustable threshold value and strong interference resistance.

Description

technical field [0001] The invention belongs to the technical field of inertial sensing, and relates to a buckling acceleration switch based on a double-layer inclined support beam structure, which is especially suitable for automobile airbags, tire pressure detection systems, weapon system fuzes and civil product devices. Background technique [0002] The acceleration switch (also known as g switch, inertia switch) is a precision inertial sensor device that can sense the acceleration signal, and is controlled by the acceleration threshold. It integrates sensing and execution. Its structure is simple, and it has distinctive features such as small size and light weight. It has a wide range of needs in high-tech fields such as military weapon systems, civil mechatronics, and consumer electronics at home and abroad. An important measure of the reliability of the contact of the acceleration switch is the contact force. When the contact force is greater than a certain critical va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/14
Inventor 贾建援赵剑王洪喜张大兴
Owner XIDIAN UNIV
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