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CN-224210845-U - Pressure maintaining device and pressure maintaining structure

CN224210845UCN 224210845 UCN224210845 UCN 224210845UCN-224210845-U

Abstract

The embodiment of the utility model provides a pressure maintaining device and a pressure maintaining structure, which relate to the technical field of inflation and deflation of tires, wherein the pressure maintaining device comprises a guide sealing ring and a throttling piece, the guide sealing ring is arranged between an air port of a tire valve and an air port of a valve core, a containing cavity is arranged in the guide sealing ring, the throttling piece is axially arranged in the containing cavity in a sliding manner, when inflation is switched into pressure maintaining, the throttling piece slides from a first position to a second position, the throttling piece is attached to the air port of the tire valve, and the air outlet quantity of the air port of the tire valve is reduced. According to the utility model, the throttling piece is attached to the air port of the tire valve, so that the air outlet quantity of the air port of the tire valve is reduced, the tire valve is closed after the air in the air pipe is rapidly emptied, the pressure maintaining capability is improved, the influence of the aperture of the air pipe on the inflation efficiency is avoided, and the inflation efficiency is ensured.

Inventors

  • XIAO XI
  • YU TONGYAN
  • YE XING
  • MA GUANGWEI
  • LIAO HUAJIE
  • CAO ZILING
  • ZHAO LEIMING

Assignees

  • 湖北军缔悍隆科技发展有限公司

Dates

Publication Date
20260508
Application Date
20250528

Claims (10)

  1. 1. A pressure maintaining device, characterized by comprising: the guide sealing ring (1), the said guide sealing ring (1) locates between the air port of the tire valve (3) and air port of the valve core (4), there is a holding cavity (11) in the said guide sealing ring (1); the throttling piece (2) is arranged in the accommodating cavity (11) in a sliding way along the axial direction; When the inflation is switched to pressure maintaining, the throttling piece (2) slides from a first position to a second position, the throttling piece (2) is attached to the air port of the tire valve (3), and the air port and air outlet amount of the tire valve (3) is reduced.
  2. 2. Pressure maintaining device according to claim 1, characterized in that the throttling element (2) comprises: The tire valve comprises a body (21), wherein a first end, close to the tire valve (3), of the body (21) is of a jogged structure (211), a communication hole (212) is formed in the first end of the body (21), and the communication hole (212) is communicated with an air port of the tire valve (3) and the accommodating cavity (11); A step (22), wherein the step (22) is arranged on the body (21) and far away from the second end of the tire valve (3), the step (22) is provided with at least one ventilation groove (221), and the ventilation groove (221) is communicated with the air port of the valve core (4) and the accommodating cavity (11); the air inlet of the tire valve (3) is communicated with the air inlet of the valve core (4) through the ventilation groove (221) when the throttling piece (2) is at a first position, the embedded structure (211) is embedded with the air inlet of the tire valve (3) when the throttling piece is at a second position, and the air inlet of the tire valve (3) is communicated with the air inlet of the valve core (4) through the communication hole (212).
  3. 3. A pressure maintaining device according to claim 2, wherein the communication hole (212) includes: An axial through hole (2121), wherein the axial through hole (2121) is arranged at the first end of the body (21), and the aperture of the axial through hole (2121) is smaller than the aperture of the air port of the tire valve (3); The radial through hole (2122) is formed in the middle of the body (21), and the radial through hole (2122) is communicated with the axial through hole (2121) and the accommodating cavity (11).
  4. 4. A pressure maintaining device according to claim 2, wherein the engagement structure (211) comprises: -a conical sealing surface (2111), said conical sealing surface (2111) being adapted to the port edge of the tyre valve (3).
  5. 5. A pressure maintaining device according to claim 2, wherein: A chamfer (2112) is provided on the outer periphery of one end of the fitting structure (211) near the tire valve (3).
  6. 6. A pressure maintaining device according to claim 2, further comprising: The spring (5) is sleeved on the periphery of the body (21), one end of the spring (5) abuts against the edge of the air port of the tire valve (3), and the other end abuts against the step (22).
  7. 7. A pressure maintaining device according to claim 1, wherein: An annular mounting groove (12) is formed in the periphery of one end, close to the tire valve (3), of the guide sealing ring (1), and the annular mounting groove (12) and the end face of the guide sealing ring (1) are arranged at intervals.
  8. 8. Pressure maintaining device according to claim 1, characterized in that the throttling element (2) is of an integrally formed construction.
  9. 9. Pressure maintaining device according to claim 1, characterized in that the throttling element (2) is made of plastic material.
  10. 10. Pressure maintaining structure, characterized by comprising a pressure maintaining device according to any one of claims 1-9.

Description

Pressure maintaining device and pressure maintaining structure Technical Field The utility model relates to the technical field of inflation and deflation of tires, in particular to a pressure maintaining device and a pressure maintaining structure. Background The tyre inflation and deflation system is an intelligent device capable of dynamically regulating the internal air pressure of a tyre, and has the core functions of monitoring the tyre pressure in real time through a sensor, and automatically or manually regulating the air pressure of the tyre in running by utilizing an air pump, a control valve and a pipeline network so as to adapt to the requirements of different road conditions. The pressure maintaining capability plays an important role in maintaining the steering stability of the vehicle, reducing the rolling resistance and prolonging the service life of the tire. In the prior art, the pressure maintaining capability is generally improved by reducing the air pipe aperture, but the air charging and discharging efficiency is reduced after the air pipe aperture is reduced, so that the air charging and discharging efficiency and the pressure maintaining capability are difficult to be considered. Disclosure of utility model The embodiment of the utility model provides a pressure maintaining device and a pressure maintaining structure, which are used for solving the technical problem that the prior art is difficult to consider the inflation and deflation efficiency and the pressure maintaining capability. In a first aspect, an embodiment of the present utility model provides a pressure maintaining device, including: The guide sealing ring is arranged between the air port of the tire valve and the air port of the valve core, and a containing cavity is arranged in the guide sealing ring; the throttling piece is axially arranged in the accommodating cavity in a sliding manner; When the inflation is switched to pressure maintaining, the throttling piece slides from the first position to the second position, and the throttling piece is attached to the air port of the tire valve, so that the air outlet quantity of the air port of the tire valve is reduced. In some embodiments, the restriction comprises: The first end of the body, which is close to the tire valve, is of a jogged structure, and a communication hole is arranged at the first end of the body and is communicated with the air port of the tire valve and the accommodating cavity; The step is arranged at the second end, far away from the tire valve, of the body and is provided with at least one ventilation groove which is communicated with the air port of the valve core and the accommodating cavity; The air inlet of the tire valve is communicated with the air inlet of the valve core through the ventilation groove, and the air inlet of the tire valve is communicated with the air inlet of the valve core through the communication hole. In some embodiments, the communication hole includes: the axial through hole is arranged at the first end of the body, and the aperture of the axial through hole is smaller than the aperture of the air port of the tire valve; The radial through hole is formed in the middle of the body and is communicated with the axial through hole and the accommodating cavity. In some embodiments, the chimeric structure comprises: And the conical sealing surface is matched with the air port edge of the tire valve. In some embodiments, the fitting structure is provided with a chamfer at an outer periphery of an end of the fitting structure adjacent to the tire valve. In some embodiments, further comprising: the spring is sleeved on the periphery of the body, one end of the spring is abutted against the edge of the tire valve air port, and the other end of the spring is abutted against the step. In some embodiments, an annular mounting groove is formed in the periphery of one end, close to the tire valve, of the guide sealing ring, and the annular mounting groove is arranged at intervals with the end face of the guide sealing ring. In some embodiments, the restriction is of unitary construction. In some embodiments, the throttling element is made of plastic material. In a second aspect, the present novel embodiment further provides a pressure maintaining structure, which includes the pressure maintaining device. The technical scheme provided by the utility model has the beneficial effects that: The embodiment of the utility model provides a pressure maintaining device and a pressure maintaining structure, wherein the pressure maintaining device comprises a guide sealing ring and a throttling piece, the guide sealing ring is arranged between an air port of a tire valve and an air port of a valve core, a containing cavity is arranged in the guide sealing ring, the throttling piece is axially arranged in the containing cavity in a sliding mode, when the pressure is maintained by switching from inflation to pressure maintaining, the throttling