CN112793369A

CN112793369A - Double-antenna tire pressure sensor

Info

Publication number: CN112793369A
Application number: CN202110179179.1A
Authority: CN
Inventors: 伍宗仁
Original assignee: Shenzhen Autotech Electronics Co ltd
Current assignee: Shenzhen Autotech Electronics Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-05-14

Abstract

The invention relates to the technical field of sensors, in particular to a tire pressure sensor which comprises an inflating valve assembly, a fixing screw, a shell and a sensing assembly, wherein the inflating valve assembly is connected with the shell through the fixing screw, and the sensing assembly is positioned in the shell. Through setting up two antennas, can be compatible not transmission frequency channel for the frequency channel of difference can both keep the biggest transmission signal intensity, and then makes the sensor can both stabilize and the interference killing feature is strong in the frequency channel transmission of difference.

Description

Double-antenna tire pressure sensor

Technical Field

The invention relates to the technical field of sensors, in particular to a double-antenna tire pressure sensor.

Background

In many countries, the tire pressure sensor is often used as a standard of an automobile for detecting the internal pressure, temperature and the like of the tire of the automobile in real time, transmitting and displaying data to a driver in a cab, avoiding traffic accidents caused by insufficient air pressure, overhigh air leakage, overhigh temperature of the tire surface and the like of the tire, and ensuring the driving safety. At present, the tire pressure sensor on the market has a single frequency band, and only one antenna is needed, so that the maximum transmitting power and stability of different frequency bands can not be realized even if the sensor compatible with multiple frequency bands is provided.

Disclosure of Invention

The embodiment of the invention provides a double-antenna tire pressure sensor, and aims to provide a tire pressure sensor which is compatible with different transmitting frequency bands.

The embodiment of the invention is realized in such a way that the tire pressure sensor comprises a valve assembly, a fixing screw, a shell and a sensing assembly, wherein the valve assembly is connected with the shell through the fixing screw, and the sensing assembly is positioned in the shell.

Further, the sensing component includes a PCBA board, a battery, an antenna, a battery clip, and a sensor.

Furthermore, a vertical through hole is formed in the connecting structure of the shell and used for enabling the fixing screw to move in the vertical direction within the length range of the vertical through hole, and the fixing screw is connected with the shell through the vertical through hole.

Further, the antenna with PCBA board connection, the antenna is fixed in on the PCBA board.

Further, the number of the antennas is more than or equal to two.

Further, the number of the antennas is two, and each antenna and the PCBA board have two fixed contact points.

Further, the plane enclosed by the antenna is perpendicular to the PCBA board.

Further, all of the antennas are located on the same side of the PCBA board.

Further, the antenna is disposed parallel to the PCBA board.

The invention has the following beneficial effects: through setting up two antennas, can be compatible not transmission frequency channel for the frequency channel of difference can both keep the biggest transmission signal intensity, and then makes the sensor can both stabilize and the interference killing feature is strong in the frequency channel transmission of difference.

Drawings

Fig. 1 is an exploded view of a tire pressure sensor according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a tire pressure sensor provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a housing and a sensing assembly of the tire pressure sensor provided by the embodiment of the invention;

fig. 4 is a schematic structural diagram of a housing of the tire pressure sensor according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a sensing assembly of the tire pressure sensor provided by the embodiment of the invention;

fig. 6 is a plan view of a tire pressure sensor provided in an embodiment of the present invention;

fig. 7 is a bottom view of a tire pressure sensor provided in an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a tire pressure sensor, which comprises a valve assembly 1, a fixing screw 2, a shell 3 and a sensing assembly 4 as shown in figure 1. The valve assembly 1 is connected with the shell 3 through a fixing screw 2, and the sensing assembly 4 is located inside the shell 3.

Further, as shown in fig. 2, the valve assembly 1 is substantially cylindrical and includes a connection end 11, a rubber ring 12, a gasket 13, a nut 14, and a valve cap 15. The connecting end 11, the rubber ring 12, the gasket 13, the nut 14 and the valve cap 15 are coaxially arranged and arranged in sequence from one end close to the housing 3.

Furthermore, the connecting end 11 is roughly in a screw shape, the end head is in a semi-spherical shape and is used for being matched with the connecting structure, and the head of the connecting end 11 is provided with a threaded hole connected with the fixing screw 2; the afterbody is cylindricly, and the afterbody is middle and the end separates respectively to be processed and has a section screw thread, and 11 afterbodies of link are gone into in cluster to rubber circle 12 and gasket 13, and nut 14 is connected with 11 afterbody middle screw thread sections cooperations of link, and valve cap 15 is connected with the terminal screw thread section cooperations of the 11 afterbody of link.

Further, rubber circle 12 is connected with link 11, specifically, installs in 11 end of link end, lies in between end and gasket 13, leaves the clearance with gasket 13 between, can play the effect of bradyseism through setting up rubber circle 12.

Further, nut 14 shape is cylindric, and cylinder end-to-end connection has the nut, and the inside processing of cylinder has the internal thread, can make nut 14 and the screw-thread fit of connecting end 11 afterbody interlude through processing the internal thread. A valve pin (not shown) is also provided in the nut 14.

Further, the valve cap 15 is substantially in the shape of a nut, and the inner wall of the valve cap 15 is provided with internal threads, so that the valve cap 15 can be matched with the threaded section at the tail end of the connecting end 11 by the internal threads. The arrangement of the nozzle cap can play a role of dust prevention.

Further, as shown in fig. 3 and 4, a groove for placing the sensing component 4 is provided in the housing 3, specifically, 4 threaded columns are provided in the region of the housing 3 corresponding to the PCBA board 41, and the sensing component 4 is connected with the PCBA board 41 through screws; the appearance of the area corresponding to the battery 42 in the housing 3 is approximately circular, and is matched with the appearance of the battery 42, and three parallel ribs are processed at the bottom of the housing 3 for reinforcing the structure of the housing 3, so that the housing 3 is more firm and durable.

Further, the outer surface of the shell 3 is provided with a connecting structure matched with the connecting end 11, the connecting structure is in a spherical groove shape, and the radian of the groove is consistent with that of the end of the connecting end 11 and is used for being connected with the end of the connecting end 11. Recess center department opens has a vertical perforating hole 31, the width of vertical perforating hole 31 slightly is wider than fixed screw 2 diameters, length is good at fixed screw 2 diameters, it can make fixed screw 2 pass connection structure and combine with link 11 to set up vertical perforating hole 31, and simultaneously, fixed screw 2 can carry out the ascending removal of vertical side in vertical perforating hole 31 length range, and then drive the sensor and rotate, reach the effect of adjustment sensor angle, that is to say, the position that can be used for adjusting the sensor adapts to different rim structures, avoid different rims to lead to the fact the interference to the sensor.

Furthermore, the joint of the head of the fixing screw 2 and the stud is processed into a limiting plane structure, and the limiting plane structure is attached to the long edge of the vertical through hole 31, so that the fixing screw 2 cannot rotate in the vertical through hole 31.

Further, as shown in fig. 5, the sensing member 4 includes a PCBA Board (Printed Circuit Board Assembly) 41, a battery 42, an antenna 43, a battery holder 44, and a sensor 45. The PCBA board 41 is located at the bottom, the battery holder 44 is provided on the side of the PCBA board 41, the battery 42 is connected to the PCBA board 41 through the battery holder 44, the two antennas 43 are connected to the PCBA board and fixed to the PCBA board 41, and the sensor 45 is provided between the battery 42 and the antennas 43 and connected to the PCBA board 41.

Further, the corner of the PCBA board 41 is provided with a through hole for mounting a screw, and the PCBA board 41 is fixed with the housing 3 by the screw.

Further, the sensor 45 may be set according to the user's needs, such as a pressure sensor and a temperature sensor.

Further, the battery 42 is a button battery, the front and back surfaces thereof are positive and negative electrodes, and the battery clamp 44 contacts with the front and back surfaces of the battery 42.

Further, the number of the antennas 43 is equal to or greater than two, in this embodiment, and in other embodiments, the number of the antennas 43 may be greater than two.

Further, the antenna 43 is bent to form two pins, and the pins are soldered to the PCBA board 41, that is, each antenna 43 and the PCBA board 41 have two solder joints, and in the present embodiment, there are four solder joints in total for the two antennas 43.

Further, the two antennas 43 are spaced apart by a suitable distance, and the antennas 43 and the PCBA board 41 enclose a rectangular shape, and in other embodiments, the shape may be a pentagon or a triangle.

Further, two antennas 43 are arranged parallel to the PCBA board 41, on the same side of the PCBA board.

Further, the plane in which each antenna 43 is located is perpendicular to the PCBA board.

Further, in order to reduce the interference of the battery to the antenna, the antenna 43 is disposed at an end far from the battery 42.

Further, as shown in fig. 6 and 7, the outer surface of the housing 3 is provided with a sensor hole, the position of which corresponds to the sensor 45.

During installation, the battery 42 is clamped into the battery clamp 44, and the PCBA 41 connected with the battery 42 is placed into the shell 3, wherein the side of the PCBA 41 with the antenna 43 faces the inner wall of the shell 3, and the sensor 45 corresponds to the sensor hole in the shell 3. After the placement, screws are screwed to connect the PCBA board 41 to the housing 3. Then, the connecting end 11 of the inflating valve assembly 1 is aligned with the connecting structure of the shell 3, the fixing screw 2 is screwed in, and the installation of the tire pressure sensor is completed.

Through setting up two antennas, can be compatible not transmission frequency channel for the frequency channel of difference can both keep the biggest transmission signal intensity, and then makes the sensor can both stabilize and the interference killing feature is strong in the frequency channel transmission of difference.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The tire pressure sensor is characterized by comprising a valve assembly, a fixing screw, a shell and a sensing assembly, wherein the valve assembly is connected with the shell through the fixing screw, and the sensing assembly is located inside the shell.

2. The tire pressure sensor of claim 1, wherein the sensing component includes a PCBA board, a battery, an antenna, a battery clip, and a sensor.

3. The tire pressure sensor according to claim 1, wherein a vertical through hole is provided at the coupling structure of the housing for allowing the fixing screw to vertically move within a length of the vertical through hole, the fixing screw being coupled with the housing through the vertical through hole.

4. The tire pressure sensor of claim 2, wherein the antenna is connected to the PCBA board, the antenna being fixed to the PCBA board.

5. The tire pressure sensor of claim 2, wherein the number of antennas is two or more.

6. The tire pressure sensor of claim 2, wherein the number of the antennas is two, each of the antennas having two fixed contact points with the PCBA board.

7. The tire pressure sensor of claim 2, wherein the plane enclosed by the antenna is perpendicular to the PCBA board.

8. The tire pressure sensor of claim 2, wherein all of the antennas are located on the same side of the PCBA board.

9. The tire pressure sensor of claim 2, wherein the antenna is disposed parallel to the PCBA board.