External three-way tire pressure sensor for automobile

Abstract

The utility model discloses an external three-way tire pressure sensor for an automobile, which comprises a tire pressure sensor body, an air charging connector, a connecting pipe, a pressure sensor, a pressure sensor and a pressure sensor, the sealing sleeve is arranged on the connecting pipe in a sleeving manner; wherein at least one circle of first baffle ring is arranged on the connecting pipe, a first ring groove matched with the first baffle ring in shape is formed in the inner wall of the sealing sleeve, a second ring groove is formed in the end face of the connecting pipe, and an annular convex rib matched with the second ring groove in shape is arranged at the end of the sealing sleeve. Compared with the prior art, the external automobile tire pressure sensor solves the problem that an existing external automobile tire pressure sensor collides with an air tap to be damaged during installation.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure sensors, in particular to an external three-way tire pressure sensor for an automobile. Background Art

[0002] External tire pressure sensors are mounted directly on the wheel's air valve, allowing simultaneous tire pressure monitoring and inflation without disassembling the sensor. For example, Chinese patent CN102069685B discloses an external tire pressure sensor. The sensor primarily comprises a connecting tube for engaging the tire's air valve, an inflation nozzle with a sealing pin, an air duct connecting the inner cavities of the connecting tube and the inflation nozzle, a sensor circuit for detecting tire pressure through the air duct, and a sealed housing that secures these components. The sensor can be used to inflate and deflate a tire without removing it from the tire's external air valve.

[0003] When existing external tire pressure sensors are threadedly connected to the air valve on the outside of the tire, the two are rigidly connected, which is prone to collision damage during installation and poor sealing effect after long-term use. Utility Model Content

[0004] The purpose of the utility model is to provide an external three-way tire pressure sensor for automobiles, so as to solve the problem that the existing external tire pressure sensors for automobiles may be damaged by collision with the air nozzle during installation.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an external three-way tire pressure sensor for automobiles, comprising:

[0006] The tire pressure sensor body has an inflation nozzle at one end and a connecting tube at the other end;

[0007] A sealing sleeve, which is sleeved on the connecting pipe;

[0008] Among them, at least one circle of first retaining ring is provided on the connecting pipe, a first ring groove whose shape matches the first retaining ring is provided on the inner wall of the sealing sleeve, a second ring groove is provided on the end face of the connecting pipe, and an annular rib whose shape matches the second ring groove is provided on the end of the sealing sleeve.

[0009] As a further description of the above technical solution:

[0010] A sealing cap is provided on the inflation nozzle, and the sealing cap is threadedly connected to the inflation nozzle.

[0011] As a further description of the above technical solution:

[0012] A second retaining ring is provided on the inflation nozzle, and the end surface of the sealing cap contacts the second retaining ring.

[0013] As a further description of the above technical solution:

[0014] The connecting pipe is provided with a plurality of strip-shaped convex ribs arranged circumferentially.

[0015] As a further description of the above technical solution:

[0016] Two circles of first baffle rings arranged in parallel are provided on the connecting pipe.

[0017] As a further description of the above technical solution:

[0018] An inclined surface is arranged on the end surface of the sealing sleeve.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. In this utility model, the sealing sleeve is made of rubber and is placed over the connecting tube and bonded in place. The sealing sleeve prevents damage to the connecting tube and the wheel valve during installation of the tire pressure sensor body, protecting the connecting tube and the wheel valve while also improving the sealing effect.

[0021] 2. In the present invention, the engagement of the first retaining ring on the connecting pipe with the first annular groove on the inner wall of the sealing sleeve, and the insertion of the annular rib on the inner wall of the sealing sleeve with the second annular groove on the end face of the connecting pipe effectively prevent the sealing sleeve from separating from the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of an external three-way tire pressure sensor for a car Figure 1 .

[0024] Figure 2 A schematic diagram of the structure of an external three-way tire pressure sensor for a car Figure 2 .

[0025] Figure 3 This is a schematic diagram of the structural disassembly of an external three-way tire pressure sensor for a car.

[0026] Figure 4 The figure is a partial cross-sectional diagram of an external three-way tire pressure sensor for an automobile.

[0027] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Tire pressure sensor body; 11. Inflator nozzle; 111. Second retaining ring; 12. Connecting tube; 121. First retaining ring; 122. Second annular groove; 123. Strip rib; 2. Sealing sleeve; 21. Annular rib; 22. Inclined surface. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-5 The utility model provides a technical solution: an external three-way tire pressure sensor for automobiles, comprising:

[0033] The tire pressure sensor body 1 has an inflation nozzle 11 at one end and a connecting tube 12 at the other end.

[0034] A sealing sleeve 2, which is sleeved on the connecting pipe 12;

[0035] Among them, at least one circle of first retaining ring 121 is provided on the connecting pipe 12, a first annular groove whose shape matches the first retaining ring 121 is provided on the inner wall of the sealing sleeve 2, a second annular groove 122 is provided on the end face of the connecting pipe 12, and an annular rib 21 whose shape matches the second annular groove 122 is provided at the end of the sealing sleeve 2.

[0036] The inflation nozzle 11 is provided with a sealing cap 3, which is threadedly connected to the inflation nozzle 11 to protect the inflation nozzle 11.

[0037] Specifically, two circles of first retaining rings 121 arranged in parallel are provided on the connecting pipe 12 to further prevent the sealing sleeve 2 from being separated from the connecting pipe 12 .

[0038] Working Principle: In an external three-way tire pressure sensor, the tire pressure sensor body 1 is connected to the wheel air nozzle via a connecting tube 12, and the inflation nozzle 11 is used to inflate the tire. The main body inside the tire pressure sensor body 1 not only connects to the pressure sensing element through the air hole to detect air pressure, but also connects to the air nozzle via the connecting tube 12 and inflates the tire through the inflation nozzle 11, thus achieving a three-way connection.

[0039] The sealing sleeve 2 is made of rubber and is mounted and bonded onto the connecting tube 12. The sealing sleeve 2 prevents damage to the connecting tube 12 from colliding with the wheel valve during installation of the tire pressure sensor body 1, protecting both the connecting tube 12 and the wheel valve while also enhancing the sealing effect. The engagement of the first retaining ring 121 on the connecting tube 12 with the first annular groove on the inner wall of the sealing sleeve 2, and the insertion of the annular rib 21 on the inner wall of the sealing sleeve 2 with the second annular groove 122 on the end surface of the connecting tube 12, effectively prevent the sealing sleeve 2 from separating from the connecting tube 12.

[0040] Example 2

[0041] This embodiment further improves upon the above embodiment by providing the following technical solutions: a second retaining ring 111 is provided on the inflation nozzle 11, and the end surface of the sealing cap 3 contacts the second retaining ring 111. The second retaining ring 111 limits the rotational installation position of the sealing cap 3 to prevent damage to the sealing cap 3.

[0042] In addition, a rubber layer may be provided on the surface of the second retaining ring 111 to further improve the sealing performance and the protection effect of the sealing cap 3 .

[0043] Example 3

[0044] This embodiment further improves upon the above embodiment by providing the following technical solutions: The connecting tube 12 is provided with a plurality of circumferentially arranged strip-shaped ribs 123. Specifically, six strip-shaped ribs 123 may be provided, thereby roughening the surface of the connecting tube 12 and facilitating the rotation and removal of the tire pressure sensor body 1.

[0045] Example 4

[0046] This embodiment further provides the following improved technical solutions based on the above embodiments: an inclined surface 22 is provided on the end surface of the sealing sleeve 2 to further prevent the sealing sleeve 2 from being pushed away from the connecting pipe 12 .

[0047] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An external three-way tire pressure sensor for a car, characterized in that: include: The tire pressure sensor body has an inflation nozzle at one end and a connecting tube at the other end; A sealing sleeve, which is sleeved on the connecting pipe; Among them, at least one circle of first retaining ring is provided on the connecting pipe, a first ring groove whose shape matches the first retaining ring is provided on the inner wall of the sealing sleeve, a second ring groove is provided on the end face of the connecting pipe, and an annular rib whose shape matches the second ring groove is provided on the end of the sealing sleeve.

2. The external three-way tire pressure sensor for automobiles according to claim 1, characterized in that: The inflation nozzle is provided with a sealing cap, and the sealing cap is threadedly connected to the inflation nozzle.

3. The external three-way tire pressure sensor for automobiles according to claim 2, characterized in that: A second retaining ring is provided on the inflation nozzle, and the end surface of the sealing cap contacts the second retaining ring.

4. The external three-way tire pressure sensor for automobiles according to claim 1, characterized in that: The connecting pipe is provided with a plurality of strip-shaped convex ribs arranged circumferentially.

5. The external three-way tire pressure sensor for automobiles according to claim 1, characterized in that: The connecting pipe is provided with two circles of the first baffle rings arranged in parallel.

6. The external three-way tire pressure sensor for automobiles according to claim 1, characterized in that: An inclined surface is provided on the end surface of the sealing sleeve.

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