Tire pressure sensor and tire pressure monitoring system

Abstract

The utility model discloses a tire pressure sensor and a tire pressure monitoring system, and relates to the technical field of tire pressure monitoring, the tire pressure sensor is used for being connected to a first inflating valve, a first connecting hole is formed in a first valve part of the first inflating valve, the tire pressure sensor comprises a shell, an adapter and a fastener, a first mounting hole is formed in one surface of the shell in a penetrating manner; the adapter is detachably mounted in the first mounting hole, a second mounting hole is formed in the adapter in a penetrating mode in the direction parallel to the hole depth direction of the first mounting hole, and the second mounting hole is used for allowing the first mouth part to be inserted; and the fastener is arranged in the second mounting hole in a penetrating manner and is in threaded connection with the first connecting hole so as to be connected with the first mouth part. The tire pressure sensor disclosed by the utility model can be matched with and provided with two types of inflating valves.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure monitoring, and particularly relates to a tire pressure sensor and a tire pressure monitoring system. Background Art

[0002] A tire pressure monitoring system (TPMS for short) generally includes a tire pressure sensor and a valve stem, which are installed on the rim of an automobile together. The valve stem is used for inflating and deflating the tire, and the tire pressure sensor is connected to the valve stem and used for monitoring the air pressure in the tire. At present, there are two types of valve stems on the market. One is an adjustable-angle metal valve stem, and the other is a rubber valve stem. Since the mouth shapes of the metal valve stem and the rubber valve stem for installing the tire pressure sensor are different, two types of tire pressure sensors are required respectively.

[0003] In the related art, the tire pressure sensor for installing the metal valve stem includes a housing and a fastener. An installation hole is provided through one surface of the housing, and the installation hole is used for inserting the metal valve stem. The fastener passes through the installation hole and is threadedly connected to the mouth of the metal valve stem to connect the mouth of the metal valve stem. However, the mouth shape of the rubber valve stem does not match the shape of the installation hole. If the rubber valve stem is directly inserted into the installation hole, the rubber valve stem will also shake in the installation hole. Therefore, this type of tire pressure sensor cannot meet the installation and use requirements of both types of valve stems at the same time, which is not conducive to meeting the use needs of workers. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a tire pressure sensor and a tire pressure monitoring system, aiming to enable the same tire pressure sensor to be adapted to install an adjustable-angle metal valve stem and a rubber valve stem, which is conducive to meeting the use needs of workers.

[0005] To achieve the above purpose, the tire pressure sensor proposed by the utility model is used to connect to a first valve stem. A first connection hole is provided in a first mouth of the first valve stem. The tire pressure sensor includes a housing, an adapter, and a fastener. A first installation hole is provided through one surface of the housing; the adapter is detachably installed in the first installation hole. A second installation hole is provided through the adapter in a direction parallel to the depth direction of the first installation hole, and the second installation hole is used for inserting the first mouth; the fastener passes through the second installation hole and is threadedly connected to the first connection hole to connect to the first mouth.

[0006] In one embodiment, the first mounting hole includes a first through hole and a second through hole that communicate with each other. The aperture of the first through hole is smaller than the aperture of the second through hole. The adapter includes a first insertion portion and a second insertion portion that are connected to each other. The first insertion portion is inserted along the depth direction of the first through hole, so that the second insertion portion is limited to the bottom wall of the second through hole along the depth direction of the second through hole.

[0007] In one embodiment, a guiding surface is provided on the hole wall of the second through hole. The guiding surface extends along the depth direction of the second through hole. A guiding portion is provided on the outer side wall of the second insertion portion. The guiding portion abuts against the guiding surface, so that the second insertion portion moves along the depth direction of the second through hole.

[0008] In one embodiment, a plurality of guiding surfaces are provided. The plurality of guiding surfaces are spaced apart along the circumferential direction of the second through hole. A plurality of guiding portions are provided. The plurality of guiding portions are spaced apart along the circumferential direction of the outer side wall of the adapter. One guiding portion abuts against one guiding surface.

[0009] In one embodiment, the second mounting hole includes a fastening hole and a limiting hole that communicate with each other. The fastener sequentially passes through the fastening hole and the limiting hole. The first nozzle is inserted into the limiting hole and is limited to the bottom wall of the limiting hole along the depth direction of the limiting hole.

[0010] In one embodiment, the first nozzle and the limiting hole are in interference fit.

[0011] In one embodiment, the adapter and the first mounting hole are in interference fit. And / or, the material of the adapter is an elastic material. And / or, the material of the first valve stem is rubber.

[0012] In one embodiment, the fastener includes a limiting portion and a connecting portion that are connected to each other. The connecting portion is threadedly connected to the first connecting hole. The tire pressure sensor further includes a gasket. The gasket is sleeved on the connecting portion and is located between the limiting portion and the opening edge of the first mounting hole to limit the limiting portion along the depth direction of the first mounting hole.

[0013] In one embodiment, the gasket includes a ring body and a stopping portion. The ring body is sleeved on the connecting portion. The stopping portion is obliquely connected to the circumferential side of the ring body in a direction inclined to the axis of the ring body and is used for abutting against the opening edge of the first mounting hole.

[0014] The present utility model further provides a tire pressure monitoring system. The tire pressure monitoring system includes a first valve stem and the tire sensor as described above. The tire pressure sensor is connected to the first valve stem.

[0015] In the technical solution of the present utility model, when no adapter is installed in the first mounting hole, the first mounting hole is used for inserting a metal valve stem. A fastener passes through the first mounting hole and is threadedly connected to the mouth of the metal valve stem to connect the mouth of the metal valve stem. When an adapter is installed in the first mounting hole, the second mounting hole is used for inserting a rubber valve stem. The fastener passes through the second mounting hole and is threadedly connected to the mouth of the rubber valve stem to connect the mouth of the rubber valve stem.

[0016] Therefore, by adding an adapter that can be detachably installed in the first mounting hole in the solution of the present utility model, the same tire pressure sensor can be adapted to install a metal valve stem with an adjustable angle and a rubber valve stem, which is beneficial to meeting the usage requirements of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 Schematic structural diagram of an embodiment in which a tire pressure sensor provided by the present utility model is connected to a first valve stem;

[0019] Figure 2 For Figure 1 exploded structural diagram;

[0020] Figure 3 For Figure 1 cross-sectional structural diagram;

[0021] Figure 4 For Figure 1 structural diagram of the housing in

[0022] Figure 5 For Figure 1 structural diagram of the adapter;

[0023] Figure 6 Schematic structural diagram of an embodiment in which a tire pressure sensor provided by the present utility model is connected to a second valve stem;

[0024] Figure 7 For Figure 6 cross-sectional structural diagram.

[0025] Description of the reference numerals in the drawings: 100, tire pressure monitoring system; 10, tire pressure sensor; 1, housing; 11, first mounting hole; 111, first through hole; 113, second through hole; 1131, guiding surface; 13, reinforcing rib; 3, adapter; 31, second mounting hole; 311, fastening hole; 313, limiting hole; 331, first insertion part; 333, second insertion part; 3331, guiding part; 5, fastener; 51, limiting part; 53, connecting part; 6, gasket; 61, ring body; 63, stopping part; 70, first valve; 71, first nozzle; 711, first connection hole; 73, dust cap; 75, first air hole; 80, second valve; 81, second nozzle; 811, second connection hole; 85, second air hole.

[0026] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0030] A tire pressure monitoring system (TPMS for short) generally includes a tire pressure sensor and a valve stem, which are installed together on the rim of an automobile. The valve stem is used for inflating and deflating the tire, and the tire pressure sensor is connected to the valve stem and used for monitoring the air pressure in the tire. At present, there are two types of valve stems on the market. One is an adjustable-angle metal valve stem, and the other is a rubber valve stem. Since the mouth shapes of the metal valve stem and the rubber valve stem for installing the tire pressure sensor are different, two types of tire pressure sensors are required respectively.

[0031] In the related art, the tire pressure sensor for installing the metal valve stem includes a housing and a fastener. An installation hole is penetrated through one surface of the housing, and the installation hole is used for inserting the metal valve stem. The fastener passes through the installation hole and is threadedly connected to the mouth of the metal valve stem to connect the mouth of the metal valve stem. However, the mouth shape of the rubber valve stem does not match the shape of the installation hole. If the rubber valve stem is directly inserted into the installation hole, the rubber valve stem will also shake in the installation hole. Therefore, this kind of tire pressure sensor cannot meet the installation and use requirements of both types of valve stems at the same time, which is not conducive to meeting the use needs of the staff.

[0032] To solve the above problems, a tire pressure sensor 10 proposed by the present utility model aims to enable the same tire pressure sensor 10 to be adapted to install an adjustable-angle metal valve stem and a rubber valve stem, which is conducive to meeting the use needs of the staff.

[0033] Refer to Figures 1 to 7 , in an embodiment of the present utility model, the tire pressure sensor 10 is used to connect to a first valve stem 70. A first connection hole 711 is opened on a first mouth 71 of the first valve stem 70. The tire pressure sensor 10 includes a housing 1, an adapter 3, and a fastener 5. A first installation hole 11 is penetrated through one surface of the housing 1; the adapter 3 is detachably installed in the first installation hole 11. A second installation hole 31 is penetrated through the adapter 3 in a direction parallel to the depth direction of the first installation hole 11, and the second installation hole 31 is used for inserting the first mouth 71; the fastener 5 passes through the second installation hole 31 and is threadedly connected to the first connection hole 711 to connect to the first mouth 71.

[0034] Among them, the adapter 3 is filled and installed in the first installation hole 11, so as to make up for the gap between the first nozzle 71 and the periphery of the first installation hole 11, so as to prevent the first nozzle 71 from shaking in the first installation hole 11. The fastener 5 can be selected as a bolt assembly or a screw assembly. The first nozzle 71 is provided with a first air hole 75 through the side wall close to the housing 1, and the second nozzle 81 is provided with a second air hole 85 through the side wall close to the housing 1. The first air hole 75 and the second air hole 85 are respectively used for inflating the inside of the tire. The opening edge of the first installation hole 11 is convexly provided with a reinforcing rib 13 to increase the strength of the housing 1. A dust cap 73 is arranged on the side of the first valve nozzle 70 away from the housing 1.

[0035] In the technical solution of the present utility model, when the adapter 3 is not installed in the first installation hole 11, the first installation hole 11 is used for inserting a metal valve nozzle, and the fastener 5 passes through the first installation hole 11 and is threadedly connected to the nozzle of the metal valve nozzle to connect the nozzle of the metal valve nozzle. When the adapter 3 is installed in the first installation hole 11, the second installation hole 31 is used for inserting a rubber valve nozzle, and the fastener 5 passes through the second installation hole 31 and is threadedly connected to the nozzle of the rubber valve nozzle to connect the nozzle of the rubber valve nozzle.

[0036] Therefore, in the solution of the present utility model, by adding an adapter 3 that can be detachably installed in the first installation hole 11, the same tire pressure sensor 10 can be adapted to install an adjustable-angle metal valve nozzle and a rubber valve nozzle, which is beneficial to meeting the use requirements of the staff.

[0037] Optionally, the first valve nozzle 70 is a non-adjustable-angle rubber valve nozzle, and the second valve nozzle 80 is an adjustable-angle metal valve nozzle. In an embodiment of adjusting the angle of the second valve nozzle 80, in use, first, the technician loosens the fastener 5, and slowly manually lifts (or lowers) the second valve nozzle 80 according to the actual needs of the wheel hub, so as to drive the fastener 5 to rotate up and down along the first installation hole 11, and at the same time drive the second nozzle 81 of the second valve nozzle 80 to slide relative to the concave spherical surface by the first fastener 5 to realize the angle adjustment of the second valve nozzle 80. When adjusted to a reasonable position, then tighten the fastener 5 to be threadedly connected to the second connection hole 811 to lock the second valve nozzle 80 and the housing 1.

[0038] Refer to Figures 3 to 5, in an embodiment of the present utility model, the first mounting hole 11 includes a first through hole 111 and a second through hole 113 that are communicated with each other. The aperture of the first through hole 111 is smaller than the aperture of the second through hole 113. The adapter 3 includes a first insertion portion 331 and a second insertion portion 333 that are connected to each other. The first insertion portion 331 is inserted along the depth direction of the first through hole 111, so that the second insertion portion 333 is limited to the bottom wall of the second through hole 113 along the depth direction of the second through hole 113.

[0039] In this embodiment, the second insertion portion 333 is limited to the bottom wall of the second through hole 113 along the depth direction of the second through hole 113, thereby controlling the insertion stroke of the adapter 3 in the first mounting hole 11 and realizing the limit on one side of the adapter 3. The other side of the adapter 3 is limited to the first nozzle portion 71 that has been firmly connected, thereby realizing the overall fixation of the adapter 3, which is beneficial to improving the use stability of the tire pressure sensor 10.

[0040] In addition, it is worth noting that since the adapter 3 cannot rotate in the first mounting hole 11 and the first nozzle portion 71 is also filled and connected in the second mounting hole 31, the first valve nozzle 70 does not rotate circumferentially but is fixedly arranged, which is beneficial to further realizing the reliable cooperation between the first valve nozzle 70 and the tire pressure sensor 10.

[0041] Refer to Figures 3 to 5 , in an embodiment of the present utility model, a guiding surface 1131 is provided on the hole wall of the second through hole 113. The guiding surface 1131 extends along the depth direction of the second through hole 113. A guiding portion 3331 is provided on the outer side wall of the second insertion portion 333. The guiding portion 3331 abuts against the guiding surface 1131, so that the second insertion portion 333 moves along the depth direction of the second through hole 113.

[0042] In this embodiment, through the sliding abutment and cooperation between the guiding portion 3331 and the guiding surface 1131, the insertion of the second insertion portion 333 in the second through hole 113 can be guided, improving the installation accuracy of the adapter 3, which is beneficial to realizing the reliable installation of the adapter 3 with the first joint subsequently to improve the installation efficiency.

[0043] Refer to Figures 3 to 5 , in an embodiment of the present utility model, the number of the guiding surfaces 1131 is multiple. The multiple guiding surfaces 1131 are arranged at intervals along the circumference of the second through hole 113. The number of the guiding portions 3331 is multiple. The multiple guiding portions 3331 are arranged at intervals along the outer side wall circumference of the adapter 3. One guiding portion 3331 abuts against one guiding surface 1131.

[0044] In this embodiment, through the one-to-one abutting cooperation between the plurality of guiding portions 3331 and the plurality of guiding surfaces 1131, the insertion of the second insertion portion 333 into the second through hole 113 can be further guided, improving the installation accuracy of the adapter 3.

[0045] Referring to Figures 3 to 5 , in an embodiment of the present utility model, the second mounting hole 31 includes a fastening hole 311 and a limiting hole 313 that communicate with each other. The fastener 5 sequentially passes through the fastening hole 311 and the limiting hole 313. The first nozzle portion 71 is inserted into the limiting hole 313 and is limited to the bottom wall of the limiting hole 313 along the depth direction of the limiting hole 313.

[0046] In this embodiment, the first nozzle portion 71 is limited to the bottom wall of the limiting hole 313 along the depth direction of the limiting hole 313, thereby controlling the insertion stroke of the first nozzle portion 71 in the limiting hole 313, further realizing the one-sided limitation of the first nozzle portion 71, and being beneficial to improving the installation stability of the first nozzle portion 71.

[0047] Referring to Figures 3 to 5 , in an embodiment of the present utility model, the first nozzle portion 71 and the limiting hole 313 are in interference fit.

[0048] In this embodiment, the first nozzle portion 71 and the limiting hole 313 are provided with an interference fit, which is beneficial to realizing the stability of the connection between the fastener 5 and the first nozzle portion 71, and then ensuring the normal use of the tire pressure sensor 10.

[0049] Referring to Figures 1 to 5 , in an embodiment of the present utility model, the adapter 3 and the first mounting hole 11 are in interference fit. And / or, the material of the adapter 3 is an elastic material. And / or, the material of the first valve nozzle 70 is rubber.

[0050] In this embodiment, the adapter 3 and the first mounting hole 11 are provided with an interference fit, which is beneficial to ensuring the stability of the adapter 3 filled in the first mounting hole 11, preventing the adapter 3 from shifting and shaking in the first mounting hole 11, and being beneficial to realizing the adaptability between the adapter 3 and the first mounting hole 11.

[0051] Optionally, the material of the adapter 3 is set as an elastic material, so that the outer peripheral side of the adapter 3 elastically abuts against the hole wall of the first mounting hole 11, improving the adaptability of the assembly.

[0052] Optionally, the material of the first valve nozzle 70 is set as an elastic material such as rubber, so that the outer peripheral side of the first nozzle portion 71 of the first valve nozzle 70 elastically abuts against the hole wall of the second mounting hole 31, improving the adaptability of the assembly.

[0053] Referring to Figures 3 to 5, in an embodiment of the present utility model, the fastener 5 includes a limiting portion 51 and a connecting portion 53 connected to each other. The connecting portion 53 is threadedly connected to the first connection hole 711. The tire pressure sensor 10 further includes a gasket 6. The gasket 6 is sleeved on the connecting portion 53 and is located between the limiting portion 51 and the opening edge of the first mounting hole 11 to limit the limiting portion 51 along the depth direction of the first mounting hole 11.

[0054] In this embodiment, when the connecting portion 53 moves along the depth direction of the first mounting hole 11, it drives the limiting portion 51 to abut against one side of the gasket 6 away from the first mounting hole 11, which is beneficial to avoid the wear caused by the direct abutment of the limiting portion 51 against the housing 1 and improve the service life of the tire pressure sensor 10.

[0055] Refer to Figures 2 to 5 , in an embodiment of the present utility model, the gasket 6 includes an annular body 61 and a stop portion 63. The annular body 61 is sleeved on the connecting portion 53. The stop portion 63 is connected to the circumferential side of the annular body 61 obliquely to the axis direction of the annular body 61 and is used to abut against the opening edge of the first mounting hole 11.

[0056] In this embodiment, when the limiting portion 51 abuts and drives the annular body 61 to abut against the housing 1 side, in order to avoid the loosening and slipping of the limiting portion 51, which affects the connection stability between the fastener 5 and the first valve stem 70. By the stop portion 63 obliquely abutting against the housing 1, it is beneficial to improve the abutment stability between the limiting portion 51 and the housing 1 and ensure the normal assembly of the fastener 5 and the first valve stem 70.

[0057] Optionally, the gasket 6 is selected as a stop gasket 6.

[0058] The present utility model further provides a tire pressure monitoring system 100. The tire pressure monitoring system 100 includes a first valve stem 70 and the tire sensor as described above. The tire pressure sensor 10 is connected to the first valve stem 70. Since this tire pressure monitoring system 100 adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0059] Among them, the body of the tire pressure sensor 10 includes a housing 1, a detection circuit board arranged in the housing 1, and a storage battery for supplying power to the detection circuit board. The detection circuit board is provided with a detection circuit for detecting and collecting the air pressure and temperature data in the tire and decoding, and a high-frequency transmitting circuit for transmitting the decoded data at a high frequency. The detection circuit detects and collects the air pressure and temperature data in the tire, then decodes the data, and the decoded data is transmitted to a display installed in the vehicle through the high-frequency transmitting circuit. After receiving the data, the display processes and displays it.

[0060] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A tire pressure sensor, characterized in that: The tire pressure sensor is used to be connected to a first air valve, a first mouth portion of the first air valve is provided with a first connection hole, and the tire pressure sensor comprises: A housing, wherein a first mounting hole is formed through a surface of the housing; an adapter, the adapter being detachably mounted on the first mounting hole, the adapter being provided with a second mounting hole extending through the adapter parallel to the depth direction of the first mounting hole, the second mounting hole being used for inserting the first mouth; and A fastener is inserted into the second mounting hole and is threadedly connected to the first connecting hole to be connected to the first mouth.

2. The tire pressure sensor according to claim 1, characterized in that: The first mounting hole includes a first through hole and a second through hole that are connected, the aperture of the first through hole is smaller than the aperture of the second through hole, the adapter includes a first plug-in portion and a second plug-in portion that are connected, the first plug-in portion is inserted along the hole depth direction of the first through hole so that the second plug-in portion is limited to the bottom wall of the second through hole along the hole depth direction of the second through hole.

3. The tire pressure sensor according to claim 2, characterized in that: The hole wall of the second through hole is provided with a guide surface, and the guide surface is extended along the hole depth direction of the second through hole. The outer side wall of the second plug-in part is provided with a guide part, and the guide part abuts against the guide surface to enable the second plug-in part to move along the hole depth direction of the second through hole.

4. The tire pressure sensor according to claim 3, characterized in that: There are multiple guide surfaces, which are spaced apart circumferentially along the second through hole; there are multiple guide parts, which are spaced apart circumferentially along the outer wall of the adapter; and one guide part abuts against one guide surface.

5. The tire pressure sensor according to claim 1, characterized in that: The second mounting hole comprises a connected fastening hole and a limiting hole, the fastener is sequentially passed through the fastening hole and the limiting hole, the first mouth is inserted into the limiting hole and is limited to the bottom wall of the limiting hole along the hole depth direction of the limiting hole.

6. The tire pressure sensor according to claim 5, characterized in that: The first mouth portion and the limiting hole are interference fit.

7. The tire pressure sensor according to any one of claims 1 to 6, characterized in that: The adapter and the first mounting hole are interference fit; And / or, the adapter is made of elastic material; And / or, the first valve is made of rubber.

8. The tire pressure sensor according to any one of claims 1 to 6, characterized in that: The fastener includes a limiting portion and a connecting portion that are connected to each other, the connecting portion is threadedly connected to the first connecting hole, and the tire pressure sensor also includes a gasket, which is sleeved on the connecting portion and located between the limiting portion and the opening edge of the first mounting hole to limit the limiting portion along the hole depth direction of the first mounting hole.

9. The tire pressure sensor according to claim 8, characterized in that: The gasket includes a ring body and a stopper, wherein the ring body is sleeved on the connecting portion, and the stopper is connected to the peripheral side of the ring body at an angle to the axial direction of the ring body and is used to abut against the opening edge of the first mounting hole.

10. A tire pressure monitoring system, characterized in that: The tire pressure monitoring system comprises: First valve; and The tire pressure sensor according to any one of claims 1 to 9, wherein the tire pressure sensor is connected to the first valve.

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