Tire pressure sensor and tire thereof

Abstract

The tire pressure sensor comprises a shell assembly, a tire pressure detection assembly and a power source, a containing space is formed in the shell assembly, and the tire pressure detection assembly and the power source are both assembled in the containing space. And the power supply and the tire pressure detection assembly are symmetrically arranged relative to the central axis of the accommodating space. Through the mode, the tire pressure detection assembly and the power supply are symmetrically arranged about the central axis of the accommodating space, so that the internal structure of the tire pressure sensor is more compact, the overall size of the tire pressure sensor is reduced, the weight distribution of the tire pressure sensor is optimized, the dynamic balance performance of a tire is improved, and the safety of vehicle driving is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire pressure monitoring technology field especially relates to a tire pressure sensor and its tire. BACKGROUND

[0002] Automobile tire is the important component of car, and it has the vital role to guarantee the safe driving of car, and the function of tire pressure monitoring system is to carry out real-time automatic monitoring to tire pressure in the process of car driving, and carries out the alarm to tire air leakage and low pressure, ensures the traffic safety, in the existing tire pressure sensor, the layout of detection assembly and power supply adopts the dispersed or stacked arrangement, although the assembly process of tire pressure sensor is simplified, but increases the axial or radial length of tire pressure sensor, leads to the space occupation to be too big when installing in the tire inside, influences tire dynamic balance performance, reduces the safety of vehicle driving. SUMMARY

[0003] The utility model discloses a tire pressure sensor and its tire to overcome the insufficient of prior art, to solve the technical problem of the layout of detection assembly and power supply in the existing tire pressure sensor adopts the dispersed or stacked arrangement, leads to the space occupation to be too big when installing in the tire inside, influences tire dynamic balance performance, reduces the safety of vehicle driving.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] First, the utility model discloses an embodiment proposes a kind of tire pressure sensor, comprising: shell assembly, tire pressure detection component and power supply, the accommodating space is equipped in the shell assembly, the tire pressure detection component and the power supply are all assembled in the accommodating space, and the power supply and the tire pressure detection component are about the middle axis of the accommodating space Symmetrical arrangement.

[0006] In a specific embodiment, the shell assembly includes: upper shell and bottom cover, the upper shell cover is equipped in the bottom cover to form the accommodating space, and the power supply and the tire pressure detection component are symmetrically arranged along the length direction of the bottom cover.

[0007] In a specific embodiment, the tire pressure detection component includes: electric control board and on-board antenna, the on-board antenna is vertically connected to the electric control board, and the on-board antenna and the power supply are symmetrically arranged about the middle axis of the bottom cover.

[0008] In a specific embodiment, the on-board antenna includes: substrate and radiating element, the radiating element is attached to the substrate, and the radiating element includes a plurality of radiation patches, and the plurality of radiation patches are electrically connected to each other and arranged at the periphery of the substrate.

[0009] In a specific embodiment, the radiation patch extends to the first connecting portion.

[0010] In a specific embodiment, the bottom of the substrate is provided with a first connecting portion, the electric control board is provided with a first opening corresponding to the position of the first connecting portion, and the first connecting portion is inserted into the first opening.

[0011] In a specific embodiment, the bottom of the substrate is further provided with a second connecting portion, the electric control board is provided with a second opening corresponding to the position of the second connecting portion, and the second connecting portion is inserted into the second opening.

[0012] In a specific embodiment, the on-board antenna comprises a first end and a second end, and the horizontal height of the first end is higher than that of the second end.

[0013] In a specific embodiment, the on-board antenna further comprises a transition section, one end of the transition section is connected to the first end, and the other end of the transition section is connected to the second end.

[0014] In a second aspect, an embodiment of the utility model provides a tire, which comprises a hub and at least one tire pressure sensor as described above, the tire pressure sensor is assembled on the hub, and part of the structure of the tire pressure sensor is located in the hub.

[0015] The utility model has the beneficial effects that:

[0016] Compared with the prior art, the tire pressure sensor provided by the utility model has the tire pressure detection assembly and the power supply symmetrically arranged about the central axis of the accommodating space, so that the internal structure of the tire pressure sensor is more compact, the overall volume of the tire pressure sensor is reduced, the weight distribution of the tire pressure sensor is optimized, the dynamic balance performance of the tire is improved, and the safety of vehicle driving is enhanced.

[0017] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, the content of the specification can be implemented, and in order to make the above and other purposes, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a schematic diagram of the overall structure of a tire pressure sensor according to an embodiment of the utility model;

[0019] Figure 2 Fig. 2 is a schematic diagram of the cross-sectional structure of a tire pressure sensor according to an embodiment of the utility model;

[0020] Fig. 3 is a schematic diagram of the internal structure of a tire pressure sensor according to an embodiment of the utility model;

[0021] Fig. 4 is a schematic diagram of the overall structure of the on-board antenna in the tire pressure sensor according to an embodiment of the present application;

[0022] Fig. 5 is a schematic diagram of the connection relationship between the on-board antenna and the electronic control board in the tire pressure sensor according to an embodiment of the present application;

[0023] Figure 6 Fig. 6 is a schematic diagram of the overall structure of the tire according to an embodiment of the present application.

[0024] Legend:

[0025] 10, tire pressure sensor; 11, shell assembly; 111, upper shell; 1111, protection groove; 1112, through hole; 112, bottom cover; 113, containing space; 12, tire pressure detection assembly; 121, electronic control board; 1211, first opening; 1212, second opening; 122, on-board antenna; 1221, substrate; 12211, first connecting part; 12212, second connecting part; 1222, radiating element; 12221, radiating patch; 1223, first end; 1224, second end; 1225, transition section; 123, detection element; 13, power supply; 20, hub. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, specific embodiments of the present application will be further described in detail below with reference to the drawings.

[0027] The technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship described based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0030] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be connected, or it can be detachable, or it can be integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application. Embodiment

[0033] First aspect, please refer to Figures 1 to 5The utility model embodiment proposes a kind of tire pressure sensor 10, comprising: shell assembly 11, tire pressure detection component 12 and power supply 13, shell assembly 11 is equipped with containing space 113, and power supply 13 and tire pressure detection component 12 are symmetrically arranged about the central axis of containing space 113.

[0034] Need to be specially pointed out, tire pressure detection component 12 also includes: detection element 123, detection element 123 is electrically connected with electric control board 121, power supply 13 is electrically connected with electric control board 121, detection element 123 and on-board antenna 122, and power supply 121, detection element 123 and on-board antenna 122 are powered.Equipped with the through hole 1112 corresponding with detection element 123 on the upper shell 111 in shell assembly 11, when tire pressure sensor 10 is applied in tire, the gas in tire interior is contacted with detection element 123 through the through hole 1112, and the gas pressure and temperature in tire interior are measured simultaneously.

[0035] Specifically, tire pressure detection component 12 and power supply 13 are symmetrically arranged about the central axis of containing space 113 (such as left-right or front-back symmetry), reduce internal redundant space, simultaneously make shell assembly 11 stress uniform, avoid local stress concentration to lead to cracking or deformation, prolong the service life of tire pressure sensor 10.Tire pressure detection component 12 and power supply 13 are symmetrically arranged to avoid the scattered gap of dispersed layout or the height accumulation of stacked type, so that tire pressure sensor 10 is more flattened, so that tire pressure sensor 10 is miniaturized;The weight of power supply 13 and detection component is similar and symmetrically distributed, and the centrifugal force generated by the two is offset when tire rotates, reduces the vibration caused by mass eccentricity, keeps the gravity center of tire pressure sensor 10 balanced, improves the dynamic balance performance of tire.Due to the symmetric distribution of sensor internal components, the vibration caused by sensor is smaller when tire rotates at high speed, thereby improving vehicle driving safety.

[0036] The tire pressure sensor 10 proposed in the embodiment is symmetrically arranged about the central axis of containing space 113, so that the internal structure of tire pressure sensor 10 is more compact, the overall volume of tire pressure sensor 10 is reduced, the weight distribution of tire pressure sensor 10 is optimized, the dynamic balance performance of tire is improved, thereby enhancing the safety of vehicle driving.

[0037] Please refer to Figure 2 Shell assembly 11 includes: upper shell 111 and bottom cover 112, upper shell 111 is covered in bottom cover 112 to form containing space 113, and power supply 13 and tire pressure detection component 12 are symmetrically arranged along the length direction of bottom cover 112.

[0038] Specifically, the upper shell 111 covers the bottom cover 112 to form a closed accommodation space 113, and the power supply 13 and the tire pressure detection assembly 12 are symmetrically arranged along the length direction of the bottom cover 112 to reduce internal stress concentration and improve the deformation resistance of the shell assembly 11. The power supply 13 and the tire pressure detection assembly 12 are symmetrically arranged along the length direction of the bottom cover 112, so that the centers of mass of the two are located on the central axis of the bottom cover 112. When the tire rotates, the directions of the centrifugal forces are opposite and the sizes are equal, and the resultant moment tends to be zero, so that the tire dynamic balance deviation is eliminated, the safety of vehicle driving is improved, the accommodation space 113 in the shell assembly 11 is fully utilized, the volume of the tire pressure sensor 10 is reduced, and the tire pressure sensor 10 is miniaturized.

[0039] Referring to Figure 2 and Figure 3 , the tire pressure detection assembly 12 includes an electric control board 121 and an on-board antenna 122, the on-board antenna 122 is vertically connected to the electric control board 121, and the on-board antenna 122 and the power supply 13 are symmetrically arranged about the central axis of the bottom cover 112.

[0040] Specifically, the on-board antenna 122 is perpendicular to the electric control board 121 (i.e. along the tire axial direction), so that the signal radiation direction is parallel to the tire rotation axis, the reflection attenuation of the electromagnetic wave by the metal hub 20 is reduced, the antenna and the power supply 13 are symmetrically distributed, the distance between the two is maximized, and the magnetic field direction of the power supply 13 is perpendicular to the antenna radiation direction, so that the coupling interference is reduced

[0041] Referring to Figure 4 , the on-board antenna 122 includes a substrate 1221 and a radiation element 1222, the radiation element 1222 is attached to the substrate 1221, and the radiation element 1222 includes a plurality of radiation patches 12221, the plurality of radiation patches 12221 are electrically connected to each other and arranged at the periphery of the substrate 1221.

[0042] Specifically, the onboard antenna 122 is based on the wavelength shortening principle, reduces the transmission speed of electromagnetic waves, concentrates the electric field at the interface between the radiating element 1222 and the substrate 1221, reduces the edge radiation loss, improves the radiation efficiency, increases the energy distribution in space, improves the radiation efficiency of the onboard antenna 122, and has a smaller volume than the same antenna with the same transmission power, realizing the miniaturization of the antenna. Moreover, after the plurality of radiation patches 12221 are electrically connected to each other, a whole radiation system can be formed within the working frequency band. When current flows through the radiation patch 12221, each radiation patch 12221 will generate electromagnetic radiation, so that the radiation patch 12221 produces a synergistic radiation effect within the working frequency band, so that the electromagnetic waves are superimposed and interfered with each other in space, and are radiated outward with a specific direction and intensity, so that the signal is sent out, and the radiation performance of the antenna remains stable. The patches are arranged along the edge of the substrate 1221, which improves the transmission area of the onboard antenna 122, excites a ring surface current, and the radiation field is superimposed in the direction perpendicular to the plane of the substrate 1221, reduces signal loss, and improves signal transmission quality.

[0043] Preferably, in the present embodiment, the material of the substrate 1221 is PCB material, which has a stable dielectric constant and a low loss factor, so that the electromagnetic waves can propagate stably in the dielectric layer, reducing signal attenuation and distortion during transmission, and ensuring the radiation efficiency and signal quality of the onboard antenna 122. At the same time, the PCB material has high mechanical strength and rigidity, which can provide stable physical support for the radiating element 1222, thereby ensuring the use stability of the onboard antenna 122. The PCB material is easy to process and manufacture the onboard antenna 122, reducing production cost.

[0044] Please refer to Figure 4 and Figure 5 The bottom of the substrate 1221 is provided with a first connecting part 12211, and the electric control board 121 is provided with a first opening 1211 corresponding to the position of the first connecting part 12211, and the first connecting part 12211 is inserted into the first opening 1211.

[0045] Specifically, the first connecting part 12211 at the bottom of the substrate 1221 cooperates with the first opening 1211 on the electric control board 121 to realize the stable connection between the onboard antenna 122 and the control unit, avoid the connection loosening or falling off phenomenon caused by vibration and other factors, and improve the working stability of the antenna.

[0046] Please refer to Figure 4 and Figure 5The bottom of the substrate 1221 is also provided with a second connecting part 12212, and the electric control board 121 is provided with a second opening 1212 corresponding to the position of the second connecting part 12212. The second connecting part 12212 is inserted into the second opening 1212. The second connecting part 12212 inserted into the second opening 1212 cooperates with the first connecting part 12211 inserted into the first opening 1211 to realize the double-point fixed connection of the on-board antenna 122 and the electric control board 121, and further improve the connection stability of the on-board antenna 122 and the electric control board 121.

[0047] Please refer to Figure 4 and Figure 5 In an embodiment, the other side of the bottom of the substrate 1221 is also provided with a second connecting part 12212. The second connecting parts 12212 on both sides of the substrate 1221 are symmetrical about the first connecting part 12211. The second connecting part 12212 on one side of the bottom of the substrate 1221 is assembled with a feed source (not shown in the figure), and the second connecting part 12212 on the other side of the bottom of the substrate 1221 is assembled with a ground electrode (not shown in the figure). By symmetrically arranging the feed source and the ground electrode on both sides of the substrate 1221, the interference and noise in the signal transmission process are reduced, the stability and reliability of the signal are improved, the on-board antenna 122 can be reasonably arranged in the case of limited accommodation space 113, the space utilization is improved, and the on-board antenna 122 is more compact.

[0048] Please refer to Figure 4 The radiation patch 12221 extends to the first connecting part 12211. By extending the radiation patch 12221 to the first connecting part 12211, the radiation frequency of the on-board antenna 122 is increased in the case of limited accommodation space 113. The radiation efficiency of the on-board antenna 122 is improved without increasing the volume of the on-board antenna 122. The on-board antenna 122 of the present embodiment can send stronger signals under the same power input or realize communication at a farther distance.

[0049] Please refer to Figure 4 The on-board antenna 122 comprises a first end 1223 and a second end 1224. The horizontal height of the first end 1223 is higher than that of the second end 1224.

[0050] Specifically, the horizontal height of the first end 1223 of the on-board antenna 122 is higher than that of the second end 1224 of the on-board antenna 122, which changes the current distribution and electromagnetic field radiation mode of the on-board antenna 122 in space, and the height difference between the first end 1223 and the second end 1224 of the on-board antenna 122 causes the propagation path and phase of electromagnetic waves between the first end 1223 and the second end 1224 to be different when the on-board antenna 122 is working, thereby optimizing the radiation pattern of the on-board antenna 122, enabling the signal to be more concentratedly radiated in a specific direction, enhancing the signal strength in the target area, and improving the directivity and coverage range of the on-board antenna 122.

[0051] Please refer to Figure 4 , the on-board antenna 122 further comprises a transition section 1225, one end of the transition section 1225 being connected to the first end 1223, and the other end of the transition section 1225 being connected to the second end 1224.

[0052] Specifically, when the current flows in the on-board antenna 122, the transition section 1225 serves as an intermediate connecting part and can smoothly guide the current to transition from the first end 1223 to the second end 1224, reducing the reflection and scattering of electromagnetic waves at the connecting part, thereby reducing signal loss and improving the radiation efficiency of the on-board antenna 122.

[0053] Please refer to Figure 2 , the upper shell 111 is provided with a protection groove 1111, and the on-board antenna 122 extends into the protection groove 1111.

[0054] Specifically, the on-board antenna 122 is vertically connected to the control board 121 and is placed in the protection groove 1111 of the upper shell 111, which improves the utilization rate of the accommodation space 113 and makes the entire tire pressure sensor 10 structure more compact, and the on-board antenna 122 extends into the protection groove 1111 of the upper shell 111, reducing the electromagnetic interference between the on-board antenna 122 and other electronic elements on the control board 121 and improving the stability of signal transmission.

[0055] In the second aspect, please refer to Figure 6 , the utility model discloses a tire, comprising: a hub 20 and at least one above-mentioned tire pressure sensor 10, and the tire pressure sensor 10 is assembled on the hub 20.

[0056] Specifically, the tire pressure sensor 10 is applied to a tire, and therefore the beneficial effects of the tire are the same as those of the tire pressure sensor 10.

[0057] Compared with the prior art, the tire pressure sensor 10 is provided with the tire pressure detection assembly 12 and the power supply 13 which are symmetrically arranged about the middle axis of the accommodating space 113, so that the internal structure of the tire pressure sensor 10 is more compact, the overall volume of the tire pressure sensor 10 is reduced, the weight distribution of the tire pressure sensor 10 is optimized, the dynamic balance performance of the tire is improved, and the safety of vehicle driving is enhanced.

[0058] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, and anyone skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tire pressure sensor characterized by, The application relates to a tire pressure sensor, which comprises a shell assembly, a tire pressure detection assembly and a power supply. The shell assembly comprises an upper shell and a bottom cover, the upper shell covers the bottom cover to form a containing space, and the power supply and the tire pressure detection assembly are symmetrically arranged along the length direction of the bottom cover.

2. The tire pressure sensor of claim 1, wherein, The tire pressure detection assembly comprises an electric control board and an on-board antenna, the on-board antenna is vertically connected to the electric control board, and the on-board antenna and the power supply are symmetrically arranged about the central axis of the bottom cover.

3. The tire pressure sensor of claim 2, wherein, The on-board antenna comprises a substrate and a radiation element, the radiation element is attached to the substrate, the radiation element comprises a plurality of radiation patches, and the radiation patches are electrically connected to each other and arranged at the periphery of the substrate.

4. The tire pressure sensor of claim 3, wherein, The bottom of the substrate is provided with a first connecting part, the electric control board is provided with a first opening corresponding to the position of the first connecting part, and the first connecting part is inserted into the first opening.

5. The tire pressure sensor of claim 4, wherein, The radiation patch extends to the first connecting part.

6. The tire pressure sensor of claim 5, wherein, The bottom of the substrate is further provided with a second connecting part, the electric control board is provided with a second opening corresponding to the position of the second connecting part, and the second connecting part is inserted into the second opening.

7. The tire pressure sensor of claim 5, wherein, The on-board antenna comprises a first end and a second end, and the horizontal height of the first end is higher than that of the second end.

8. The tire pressure sensor of claim 3, wherein, The on-board antenna further comprises a transition section, one end of the transition section is connected to the first end, and the other end of the transition section is connected to the second end.

9. The tire pressure sensor of claim 8, wherein, The application further relates to a wheel hub and at least one tire pressure sensor as claimed in any one of claims 1 to 9, and the tire pressure sensor is assembled to the wheel hub.

10. A tire characterized by ​ ​

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