Guide bullet for seat belt rotary tensioner, rotary tensioner and seat belt
A technology for tensioning devices and safety belts, which is applied in the direction of belt tighteners, etc., can solve the problems of excessive consumption of explosive impact force, heavy guide bullet weight, and obstruction, and achieve the goals of reducing weight, increasing explosive impact force, and reducing manufacturing costs Effect
Active Publication Date: 2018-10-02
ZHEJIANG SONGYUAN AUTOMOTIVE SAFETY SYST CO LTD
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- Application Information
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Problems solved by technology
However, the connecting rib also causes a certain processing cost, and when the flight trajectory of the guided bullet deviates significantly from the midcircumference line of the transmission gear, the connecting rib cannot be embedded in the middle groove of the external teeth of the transmission gear. On the contrary, it may prevent it from entering the middle slot, causing the guided bullet to fail to hit, affecting the tightening of the seat belt
In addition, due to the heavy weight of the guided bullet, it consumes a lot of impact force of the explosion, which reduces the hitting force of the follow-up bullet
Method used
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[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.
[0027] Please refer to figure 1 as shown, figure 1 It is a structural schematic diagram of a guide bullet used in a pre-tensioned safety belt rotary tensioner provided by the application.
[0028] The present application provides a guide bullet for a pre-tensioned safety belt rotary tensioner, the guide bullet 1 comprising: a first elastic body 11 , a second elastic body 12 , a bottom 10 , and a guide rib 13 .
[0029] The shape of the first elastic body 11 is configured to have a partial profile matching the exter...
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The invention discloses a guiding bullet for a pre-tensioning safety belt rotary tensioning device. The guiding bullet comprises a first bullet body and a second bullet body; the bottom of the first bullet body and the bottom of the second bullet body are connected into a whole; the first bullet body is provided with part of outline matched with teeth pits of outer teeth of a driving wheel in a driving mechanism of a pre-tensioning safety belt, and the second bullet body is provided with part of outline or whole outline matched with the teeth pits of the outer teeth; and a guiding rib is disposed on the first bullet body and extends from the first bullet body towards the second bullet body but does not reach the second bullet body, and the thickness of the guiding rib allows the guiding rib to enter guiding grooves formed in the middle of the circumference of the outer teeth of the driving wheel. Accordingly, on the premise of guaranteeing fly-out stability of the guiding bullet, the manufacturing cost is reduced, the weight of the guiding bullet is further reduced, and subsequent bullets can obtain much more burst impact force.
Description
technical field [0001] The present application relates to the technical field of automobile manufacturing, in particular to a guide bullet for a pre-tensioned seat belt rotary tensioner, a pre-tensioned seat belt rotary tensioner and a pre-tensioned seat belt. Background technique [0002] Car seat belts are the main safety equipment currently used in cars. When a car collides, the use of car seat belts can effectively reduce the injuries suffered by seat belt users. [0003] In order to achieve sufficient safety assurance, pre-tensioned seat belts have been adopted at present. When the detection mechanism of the car detects that a collision is about to occur, this kind of seat belt tightens the seat belt by rotating the tensioner within microseconds, so that during the car collision, it can make full use of the compressed air that may be compressed to the extreme. Living space, so that the safety belt has more releasable space. [0004] The prior art provides a rotary ten...
Claims
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IPC IPC(8): B60R22/46
CPCB60R22/46
Inventor 赵轰施炳军
Owner ZHEJIANG SONGYUAN AUTOMOTIVE SAFETY SYST CO LTD