Radial holding fastening piece and tire pressure detection device using the same
A technology for tire pressure detection and fasteners, which is applied in the direction of measuring devices, inflation gas pressure measurement, fluid pressure measurement, etc., can solve the problems of not being able to maintain reliable support of the bottom surface of the wheel hub, and cannot ensure reliable support of the bottom surface of the wheel hub, and achieve fastening operation Convenient, reliable and secure placement effect
Inactive Publication Date: 2011-09-07
深圳市兴班建筑工程有限公司
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Problems solved by technology
However, because the structure of the existing air nozzle fasteners does not have a radial pressing effect, even if the tire pressure detection device is installed close to the bottom surface of the wheel hub, it cannot be guaranteed to be reliably supported by the bottom surface of the wheel hub after axial fastening, and it cannot be maintained after repeated cycles. Reliable support from the bottom surface of the wheel hub even after bumps
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Embodiment 1
[0014] The present embodiment is a tire pressure monitoring device (TPMS) using radially clamping fasteners, and its basic structure is as follows figure 1 As shown, it includes a box body 1 with a pressure sensor and a wireless transmission circuit installed inside, and an air nozzle 2 integrated with radial compression fasteners. The box body 1 has a side wall 1-1 and a base 1-2 opposite to the inner side and the inner bottom of the hub 3 respectively. The side wall 1-1 has an air nozzle perforation opposite to the hub air nozzle hole.
[0015] combine figure 2 It can be seen that the box body 1 has an arc bottom recess, and the inner arc surface of the arc bottom recess on the base 1-2 is a radial pressing surface. The air nozzle 2 has a screw section 2-1 matched with the nut 4 and an end 2-2 whose diameter is larger than the outer diameter of the screw, and its center is an air-filling hole. The center O of the end 2-2 deviates from the center O' of the screw with an e...
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The invention relates to a radial holding fastening piece, and simultaneously relates to a tire pressure detection device using the fastening piece. The fastening piece comprises a threaded rod section and an end socket, wherein the threaded rod section is matched with a nut, diameter of the end socket is more than external diameter of a threaded rod, and a centre of circle of the end socket deviates from that of the threaded rod; the minimum distance from the centre of circle of the threaded rod to a radial holding surface is more than radius of the threaded rod and less than sum of the radius of the end socket and an eccentric throw of the centre of circle of the end socket deviated from the centre of circle of the threaded rod. The eccentric end socket of the invention generates a holding force acting on the radial holding surface so as to naturally generate the needed radial holding function while fastening axially.
Description
technical field [0001] The invention relates to a threaded fastener, especially a radial pressure fastener, and also relates to a tire pressure detection device using the fastener. Background technique [0002] As we all know, commonly used fasteners such as bolts and screws can only produce axial fastening force by means of threads. However, some special occasions require not only axial fastening, but also radial compression locking. No. is 99106744.4 Chinese patent application disclosed concealed tire pressure detector is exactly like this. The sensing and wireless transmission circuits of this type of tire pressure detection device are all fixed in the car tire, and the fasteners used are organically combined with the air nozzle. In order to ensure that the pressure sensing and wireless transmission circuits can work stably in the state of turbulence, the detection device fixed on the inner side of the hub with the help of valve fasteners is not only expected to be axial...
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IPC IPC(8): G01L17/00
Inventor 殷世睿
Owner 深圳市兴班建筑工程有限公司