CN212860963U

CN212860963U - Tire pressure sensor and tire fitting

Info

Publication number: CN212860963U
Application number: CN202020647860.5U
Authority: CN
Inventors: 刘均; 张伟
Original assignee: Shenzhen Launch Technology Co Ltd
Current assignee: Shenzhen Launch Technology Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-04-02
Anticipated expiration: 2030-04-24

Abstract

The application provides a tire pressure sensor and a tire accessory, which comprises a shell, a circuit board arranged in the shell, a power supply arranged in the shell and electrically connected with the circuit board, and an antenna connected on the circuit board, wherein a chip assembly is arranged on the circuit board; the antenna is arranged on one side of the circuit board and comprises at least one turn of coil. This application tire pressure sensor and tire accessory fix the antenna in one side of circuit board, and when having avoided the installation antenna, the circuit board is to the hindrance effect of antenna, the installation of the antenna of being convenient for, simultaneously, does not need the antenna cover to establish in the circuit board outside, is favorable to reducing the size of antenna.

Description

Tire pressure sensor and tire fitting

Technical Field

The application belongs to the technical field of vehicle accessories, and more specifically relates to a tire pressure sensor and a tire accessory.

Background

In the existing tire pressure sensor, an antenna is surrounded on a circuit board. When the antenna is installed, the antenna needs to be sleeved outside the circuit board and then fixed. Because the circuit board is provided with electronic components, the electronic components prevent the antenna from being sleeved on the circuit board and are not beneficial to the installation of the antenna; thus, a large space is required in the antenna to accommodate the circuit board, resulting in a large volume of the antenna.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a tire pressure sensor to solve the technical problems that the antenna is inconvenient to install and the volume of the antenna is large in the tire pressure sensor in the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a tire pressure sensor including: the antenna comprises a shell, a circuit board arranged in the shell, a power supply arranged in the shell and electrically connected with the circuit board and an antenna connected to the circuit board, wherein a chip assembly is arranged on the circuit board; the antenna is arranged on one side of the circuit board and comprises at least one turn of coil.

Optionally, the circuit board is provided with two through holes, two ends of the antenna are bent towards one side where the circuit board is located and respectively inserted into the two through holes, and the two ends of the antenna are welded and fixed with the circuit board.

Optionally, the coil is provided with a plurality of turns, and a gap between two adjacent turns of the coil is greater than 0.1 mm; and the clearance between one side of each turn of the coil, which is close to the circuit board, and the circuit board is larger than 0.2 mm.

Optionally, the plane of each turn of the coil is arranged perpendicular to the circuit board.

Optionally, each turn of the antenna is rectangular, trapezoidal or arcuate.

Optionally, the antenna is made of a metal material by winding, and the metal material includes one or more of copper, iron, aluminum, gold, and silver.

Optionally, the chip assembly comprises an induction chip and a low frequency antenna; the induction chip is arranged in the middle of the circuit board, the low-frequency antenna is arranged at one end of the circuit board, and the power supply is arranged at the other end of the circuit board.

Optionally, the coil at one end of the antenna is disposed at a side close to the induction chip, and the coil at the other end of the antenna is disposed at a side close to the low-frequency antenna.

Optionally, the housing includes a cover plate for supporting the circuit board and a casing fastened to the cover plate, and the antenna is located on one side of the circuit board close to the casing.

Optionally, a plurality of wire slots are formed in the housing, and one side of each turn of the coil, which is far away from the circuit board, abuts against the corresponding wire slot.

Optionally, an air faucet groove for connecting with an air faucet is formed in the housing.

The embodiment of the application further provides a tire accessory, which comprises an air nozzle and the tire pressure sensor in any one of the above embodiments.

The application provides a tire pressure sensor and tire accessory's beneficial effect lies in: compared with the prior art, this application tire pressure sensor and tire accessory fix the antenna in one side of circuit board, and when having avoided the installation antenna, the circuit board is to the hindrance effect of antenna, the installation of the antenna of being convenient for, simultaneously, does not need the antenna cover to establish in the circuit board outside, is favorable to reducing the size of antenna.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a tire fitting provided in an embodiment of the present application;

fig. 2 is an exploded structural schematic view of a tire pressure sensor and an air faucet provided in the embodiment of the present application;

fig. 3 is a schematic perspective view of a circuit board, a power supply and an antenna according to an embodiment of the present disclosure;

fig. 4 is an exploded view of a housing provided in an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

1-a tire pressure sensor; 11-a housing; 111-a cover plate; 112-a housing; 1121-wire grooves; 1122-air nozzle groove; 12-a circuit board; 1201-a via; 13-a power supply; 14-an antenna; 15-a chip assembly; 151-low frequency antenna; 152-a sensing chip; 2-air tap.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application 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 present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3 together, a tire pressure sensor 1 provided in an embodiment of the present application will now be described. The tire pressure sensor 1 comprises a shell 11, a circuit board 12, a power supply 13 and an antenna 14, wherein the circuit board 12, the power supply 13 and the antenna 14 are installed in the shell 11, and the antenna 14 and the power supply 13 are connected with the circuit board 12. The circuit board 12 is provided with a chip module 15. Wherein, the power supply 13 is used for supplying power to the circuit board 12; the chip assembly 15 is used for receiving external signals and detecting air pressure, and converting data such as the air pressure and the like into signals transmitted by the antenna 14; the antenna 14 is used to transmit the air pressure detected by the circuit board 12 to an external receiver. The antenna 14 is disposed on one side of the circuit board 12, and the antenna 14 includes at least one turn of a coil. That is, the antenna 14 includes a coil having at least one turn. When the antenna 14 is installed, the antenna 14 is installed on the circuit board 12 from one side of the circuit board 12, the circuit board 12 does not need to be inserted into the coil of the antenna 14, and meanwhile, a space for accommodating elements such as the circuit board 12 and the like in the coil of the antenna 14 is not needed, so that the installation of the antenna 14 is facilitated, and the size of the space inside the coil of the antenna 14 is also reduced; meanwhile, the structure and shape design of the antenna 14 and the circuit board 12 are more flexible, which is beneficial to increasing the coverage area of the antenna.

Optionally, the chip assembly 15 may also detect data such as gas temperature.

In an embodiment, referring to fig. 2 and fig. 3, the circuit board 12 is provided with two through holes 1201, and two ends of the antenna 14 are bent toward one side of the circuit board 12 and inserted into the two through holes 1201 respectively; and both ends of the antenna 14 are soldered to the circuit board 12. Specifically, two through holes 1201 are opened on the circuit board 12. The two ends of the antenna 14 are fixed through the two through holes 1201, so that the two ends of the antenna 14 are conveniently positioned, the circuit board 12 and the antenna 14 are conveniently welded, and the connection between the antenna 14 and the circuit board 12 can be kept stable.

In one embodiment, referring to fig. 2 and 3, the coil has a plurality of turns, and a gap between two adjacent turns of the antenna 14 is greater than 0.1mm, so that the conduction between two adjacent turns of the antenna 14 can be avoided to affect the transmission of the signal. Alternatively, the gap between two adjacent turns of the antenna 14 may be greater than 0.2mm, 0.3mm, 0.4mm, or 0.5mm, etc.

In one embodiment, referring to fig. 2, 3 and 4, a gap between one side of each turn of the antenna 14 close to the circuit board 12 and the circuit board 12 is greater than 0.2mm, so that each turn of the antenna 14 is prevented from contacting with a circuit or an electronic component on the surface of the circuit board 12, a short circuit between the antenna 14 and the circuit board 12 is prevented, a certain antenna clearance area between the antenna 14 and the circuit board 12 is also ensured, integrity of signals of the antenna 14 is ensured, and the antenna clearance area mainly functions to make the circuit board 12 far away from the coil of the antenna 14, so as to weaken metal shielding. Alternatively, the gap between the turns of the antenna 14 and the circuit board 12 may be greater than 0.35mm, 0.5mm, 0.7mm, 1.0mm, etc.

Alternatively, referring to fig. 3, the plane of each turn of the coil is disposed perpendicular to the circuit board 12. I.e. the plane of each turn of the coil is at an angle of 90 deg. to the circuit board 12. This enables the antenna 14 to have a better transmission angle, which is beneficial for the external receiving device to receive the signal transmitted by the antenna 14. In other embodiments, the angle between the plane of each turn of the antenna 14 and the circuit board 12 may be 60 °, 75 °, or 85 °.

In one embodiment, referring to fig. 3, the turns of the antenna 14 are rectangular, trapezoidal, or arcuate. That is, the projection of each turn of the antenna 14 along the direction of the coil axis is rectangular, trapezoidal, or arcuate. The rectangular shape, the trapezoid shape or the arc shape is adopted, so that the winding processing of the antenna 14 is facilitated on one hand, and on the other hand, when the upper side of the antenna 14 abuts against the bottom of the wire groove 1121, the stability of the antenna 14 can be guaranteed. Of course, in other embodiments, other shapes such as triangular shapes may be used.

In one embodiment, the antenna 14 is made by winding a metal material, wherein the metal material may be one or more of copper, iron, aluminum, gold, and silver. Optionally, the antenna 14 is formed by winding a copper wire, and the copper wire is wound by the copper wire, so that the resistance of the copper wire is small, and the energy loss in the signal transmission process can be reduced. In other embodiments, aluminum wire, copper tube, etc. may be used to wind the antenna 14.

In one embodiment, referring to fig. 2 and 3, the chip assembly 15 includes a sensing chip 152 and a low frequency antenna 151, the sensing chip 152 is used for detecting air pressure, and the low frequency antenna 151 is used for receiving external signals. The sensing chip 152 is disposed in the middle of the circuit board 12, the low frequency antenna 151 is disposed at one end of the circuit board 12, and the power supply 13 is disposed at the other end of the circuit board 12. The sensing chip 152 is arranged in the middle of the circuit board 12, which is beneficial to ensuring the accuracy of detection of the sensing chip 152.

Alternatively, referring to fig. 2 and 3, the power source 13 may be a button cell or the like; it may be that a conductive sheet is soldered to the end of the circuit board 12 remote from the antenna 14, through which the two poles of the power supply 13 are connected. Optionally, a slot for accommodating the power supply 13 is disposed in the housing 112, and the power supply 13 is fixed by the cover plate 111 cooperating with the housing 112.

Alternatively, referring to fig. 2 and fig. 3, the coil at one end of the antenna 14 is disposed at a side close to the inductive chip 152, and the coil at the other end of the antenna 14 is disposed at a side close to the low-frequency antenna 151. That is, the multi-turn coil on the antenna 14 is disposed between the inductive chip 152 and the low frequency antenna 151 along the length direction of the circuit board 12, and the coils at both ends of the antenna 14 are disposed adjacent to the inductive chip 152 and the low frequency antenna 151, respectively. This can increase the coverage area of the antenna 14 on the circuit board 12, and can also make the antenna 14 close to the end of the circuit board 12, which is beneficial to increase the coverage area of the antenna 14.

In one embodiment, referring to fig. 2, 3 and 4, the housing 11 includes a cover plate 111 and a casing 112, the cover plate 111 supports the circuit board 12, and the casing 112 is fastened on the cover plate 111; the antenna 14 is located on the side of the circuit board 12 adjacent the housing 112. The cover 111 can ensure the stability of the circuit board 12, and the housing 112 can provide a space for accommodating the antenna 14. Specifically, the low frequency antenna 151 and the sensing chip 152 are mounted on the circuit board 12 at a side close to the antenna 14, so that the low frequency antenna 151 and the sensing chip 152 can be accommodated in the space inside the housing 112, and the thickness occupied by the circuit board 12 and the tire air pressure sensor 1 can be reduced.

In one embodiment, referring to fig. 2, fig. 3 and fig. 4, a plurality of wire slots 1121 are disposed in the housing 112, and a side of each coil of the antenna 14 away from the wire slot 1121 abuts against the inside of the wire slot 1121. After the housing 112 and the cover 111 are fastened and fixed, one side of the antenna 14 away from the circuit board 12 is abutted against the wire groove 1121 in the housing 112, so that the antenna 14 and the circuit board 12 can be kept stable in the housing 11. Meanwhile, each wire slot 1121 can separate the turns of the antenna 14 from each other, so as to maintain the stability of the turns of the antenna 14 and prevent short circuit between the turns of the antenna 14. Optionally, the housing 112 is snapped or screwed to the cover 111.

In one embodiment, referring to fig. 2 and 4, a nozzle slot 1122 is formed on the housing 112, and the nozzle slot 1122 is used for connecting the nozzle 2. When the air faucet 2 is installed, one end of the air faucet 2 is fixedly connected to the air faucet 2 through the air faucet groove 1122.

Referring to fig. 1, 2 and 4, an embodiment of the present application further provides a tire accessory, which includes an air nozzle 2, and further includes a tire pressure sensor 1 as described in any of the above embodiments, the air nozzle 2 is mounted on the tire pressure sensor 1, and the air nozzle 2 is used for injecting air into a tire. Tire pressure sensor 1 is fixed in one end that air cock 2 stretches into the inner tube of a tyre, supports tire pressure sensor 1 through air cock 2, prevents that the tire from removing in the tire including tire pressure sensor 1 in service, just so can be through the pressure in the tire of tire pressure sensor 1 real-time detection, the safe operation of guarantee tire.

Alternatively, air faucet 2 may be fixed to housing 112 by means of screw connection, snap connection, or adhesive. Alternatively, the air outlet of the air faucet 2 can be arranged on the side surface of the air faucet 2, and the air outlet is positioned outside the shell 11; an air inlet is arranged on the casing 112 at a position corresponding to the sensing chip 152, and a detection hole communicated with the air inlet is formed on the sensing chip 152. When the tire is inflated, gas flows into the tire, the gas in the tire enters the detection hole through the gas inlet hole, and the sensing chip 152 can detect the pressure, the temperature and the like of the gas entering the detection hole. The chip assembly 15 detects the gas pressure in time, so that potential safety hazards caused by overhigh gas pressure can be prevented. The venthole sets up outside casing 11, avoids in gaseous directly gets into casing 11 by air cock 2, can prevent that impurity (dust, oil drop, water droplet etc.) from getting into casing 11 and detecting downtheholely.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tire pressure sensor comprises a shell, a circuit board arranged in the shell, a power supply arranged in the shell and electrically connected with the circuit board, and an antenna connected on the circuit board, wherein a chip assembly is arranged on the circuit board; the method is characterized in that: the antenna is arranged on one side of the circuit board and comprises at least one turn of coil.

2. The tire pressure sensor of claim 1, wherein: the antenna comprises a circuit board, a circuit board and an antenna, wherein the circuit board is provided with two through holes, two ends of the antenna are bent towards one side where the circuit board is located and are respectively inserted into the two through holes, and the two ends of the antenna are welded and fixed with the circuit board.

3. The tire pressure sensor of claim 1, wherein: the coil is provided with a plurality of turns, and the gap between two adjacent turns of the coil is more than 0.1 mm; and the clearance between one side of each turn of the coil, which is close to the circuit board, and the circuit board is larger than 0.2 mm.

4. The tire pressure sensor of claim 1, wherein: the plane of each turn of the coil is perpendicular to the circuit board.

5. The tire pressure sensor of claim 1, wherein: and each turn coil of the antenna is rectangular, trapezoidal or arched.

6. The tire pressure sensor of claim 1, wherein: the chip assembly comprises an induction chip and a low-frequency antenna; the induction chip is arranged in the middle of the circuit board, the low-frequency antenna is arranged at one end of the circuit board, and the power supply is arranged at the other end of the circuit board.

7. The tire pressure sensor of claim 6, wherein: the coil of antenna one end sets up in being close to induction chip's one side, the coil of the antenna other end sets up in being close to low frequency antenna's one side.

8. The tire pressure sensor of any of claims 1-7, wherein: the shell comprises a cover plate for supporting the circuit board and a shell buckled on the cover plate, and the antenna is positioned on one side of the circuit board close to the shell; a plurality of wire slots are arranged in the shell, and one side of each turn of the coil, which is far away from the circuit board, is abutted against the corresponding wire slot.

9. The utility model provides a tire accessory, includes air cock, its characterized in that: further comprising the tire pressure sensor according to any one of claims 1 to 8.