CN220416359U

CN220416359U - Three-layer sealing valve inside

Info

Publication number: CN220416359U
Application number: CN202321929025.0U
Authority: CN
Inventors: 钟冲
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2024-01-30
Anticipated expiration: 2033-07-20

Abstract

The utility model discloses a three-layer sealing method type valve core, which comprises a valve core body, wherein the valve core body is detachably arranged on the side edge of an inner tube air tap, a first airtight ring is fixedly sleeved on the outer surface of the valve core body, the valve core body comprises a valve core shell, a threaded central shaft is movably arranged in the valve core shell, a locking nut is arranged on the outer surface of the threaded central shaft in a threaded manner, an inner core body is integrally formed on the side edge of the locking nut, and external threads are formed on the outer surface of the inner core body. Above-mentioned scheme, the air cock body takes place expend with heat and contract with cold phenomenon, leads to second airtight circle and intake duct to produce the gap, and when the gas tightness effect became worse, through setting up solid fixed ring, utilizes the effect of the screw-thread installation of external screw thread and internal screw thread, and first airtight circle still can guarantee the gas tightness of valve core again through solid fixed ring extrusion at the side of air cock body, through three-layer seal, improves the sealed effect of device, reduces the influence of expend with heat and contract with cold to the valve core leakproofness, improves the airtight stability of device.

Description

Three-layer sealing valve inside

Technical Field

The utility model relates to the technical field of French valve cores, in particular to a three-layer sealing French valve core.

Background

The valve inside is also called as an airtight core, and is mainly used for air intake and air leakage prevention of a tire, the main body of the valve inside is a small section of cylinder with a hollow upper end and a solid lower end, a small hole is formed in the side surface of the lower end and communicated with the hollow part, and the valve inside is mainly divided into: the traditional French valve core installation principle is to perform airtight through extruding a rubber ring between the valve core and the inner wall of the bicycle air tap, so that certain airtight performance is ensured.

For example, patent document publication No. CN213920566U, a tire valve core including a core body with a through hole and a core cap mounted on the core body; a core rod which penetrates through the core body and the core cap and can move linearly; the sealing part is fixedly arranged at one end of the core rod and can open and close a through hole at the end part of the core body, the limiting part is fixedly arranged at the other end of the core rod, and an elastic device is arranged between the limiting part and the core cap or the core body; the outer wall of the core body is provided with a matching part, the matching part is sleeved with a sealing ring, the matching part is arranged as a waist drum, the outer wall surface of the waist drum is arranged as an arc surface, and the outer diameter of the waist drum is gradually increased from two ends inwards.

When the device is used, the contact area of the sealing ring and the valve core mounting hole is increased, good sealing performance is still ensured under high-low temperature environments, but because most of the bicycle air tap is made of plastic materials, in the using process, because the plastic air tap is affected by air temperature, the phenomenon of thermal expansion and cold contraction can occur, at the moment, the sealing ring and the air tap are not tightly extruded, and then under the conditions of high temperature or low temperature, the air leakage condition is easy to occur.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the embodiment of the present utility model provides a three-layer sealing valve core, so as to solve the problem that the existing bicycle air tap is mostly made of plastic materials, and in the use process, because the plastic air tap is affected by air temperature, the phenomenon of thermal expansion and cold contraction can occur, at this time, the sealing ring and the air tap are not tightly extruded, and thus under the condition of high temperature or low temperature, the air leakage condition is easy to occur.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a three-layer sealing french valve core, includes the valve core, the side at the inner tube air cock is detachably installed to the valve core, the external surface fixed of valve core has cup jointed first airtight circle, the valve core includes the valve core casing, the inside movable mounting of valve core casing has the screw thread center pin, lock nut is installed to the external surface screw thread of screw thread center pin, lock nut's side an organic whole is formed with the inner core, the external screw thread has been seted up to the surface of inner core, the fixed solid fixed ring that cup joints of outer surface of inner core one end, the side fixedly connected with fixed block of solid fixed ring, the recess has been seted up to the surface of keeping away from solid fixed ring one end of inner core, the fixed second airtight circle that cup joints of surface of recess, the external surface fixed cup joints third airtight circle of the other one end of inner core, the fixed intercommunication of side of other one end of inner core has the valve core seat, the fixed surface of cup jointing at the fixed block of first airtight circle.

The inner tube air tap comprises an air tap body, wherein an installation seat is fixedly installed at one end of the air tap body, an air inlet channel is formed in the air tap body, and internal threads are formed at the other end of the air inlet channel.

Wherein, the inner core body is installed inside the internal thread through the external thread screw thread of surface.

The diameter of the outer surface of the first airtight ring is the same as that of the fixing ring, and the diameter of the outer surface of the first airtight ring is the same as that of the outer surface of the air tap body.

The second airtight ring is arc-shaped in appearance, and is mounted in the air inlet channel in an embedded mode.

The utility model has the technical effects and advantages that:

in the above-mentioned scheme, the air cock body takes place expend with heat and contract with cold phenomenon, leads to second airtight circle and intake duct to produce the gap, and when the gas tightness effect became worse, through setting up solid fixed ring, utilize the effect of the screw-thread installation of external screw thread and internal screw thread, first airtight circle still can guarantee the gas tightness of valve core once more through solid fixed ring extrusion in the side of air cock body, through three-layer seal, improve the sealed effect of device, reduce the influence of expend with heat and contract with cold to the valve core leakproofness, improve the airtight stability of device.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the overall exploded structure of the present utility model;

FIG. 3 is a schematic view of the inner structure of the inner tube air valve of the present utility model;

fig. 4 is a schematic view of the valve core structure of the present utility model.

The reference numerals are: 1. a valve core; 2. an inner tube air tap; 3. a first airtight ring; 11. a valve core housing; 12. a lock nut; 13. a threaded central shaft; 14. a fixing ring; 15. an inner core body; 16. a fixed block; 17. an external thread; 18. a second airtight ring; 19. a third airtight ring; 20. a valve core seat; 21. an air tap body; 22. a mounting base; 23. an air inlet channel; 24. and (5) an internal thread.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to fig. 4, the embodiment of the utility model provides a three-layer sealing method type valve core, which comprises a valve core body 1, wherein the valve core body 1 is detachably arranged on the side edge of an inner tube air tap 2, a first airtight ring 3 is fixedly sleeved on the outer surface of the valve core body 1, the valve core body 1 comprises a valve core shell 11, a threaded central shaft 13 is movably arranged in the valve core shell 11, a lock nut 12 is arranged on the outer surface of the threaded central shaft 13 in a threaded manner, an inner core body 15 is integrally formed on the side edge of the lock nut 12, an external thread 17 is arranged on the outer surface of the inner core body 15, a fixing ring 14 is fixedly sleeved on the outer surface of one end of the inner core body 15, a fixing block 16 is fixedly connected on the side edge of the fixing ring 14, a groove is arranged on the outer surface of one end, far away from the fixing ring 14, of the inner core body 15 is fixedly sleeved with a second airtight ring 18, a third airtight ring 19 is fixedly sleeved on the outer surface of the other end of the inner core body 15, a valve core seat 20 is fixedly communicated with the side edge of the other end of the inner core body 15, and the first airtight ring 3 is fixedly sleeved on the outer surface of the fixing block 16.

The inner tube air tap 2 comprises an air tap body 21, wherein an installation seat 22 is fixedly installed at one end of the air tap body 21, an air inlet channel 23 is formed in the air tap body 21, and an internal thread 24 is formed at the other end of the air inlet channel 23.

Wherein the inner core body 15 is screw-mounted inside the inner screw 24 by the outer screw 17 of the outer surface.

The diameter of the outer surface of the first airtight ring 3 is the same as that of the fixing ring 14, and the diameter of the outer surface of the first airtight ring 3 is the same as that of the outer surface of the air tap body 21.

The second airtight ring 18 has an arc shape, and the second airtight ring 18 is mounted inside the air inlet 23 in a scarf joint manner.

The working process of the utility model is as follows:

during the use, through current french valve core principle, through unscrewing lock nut 12, third airtight circle 19 is loosened, aerify with the inflator, air is by the middle of valve core casing 11, get into the bicycle inner tube through third airtight circle 19, it is accomplished to aerify, rotate and lock deadlock nut 12, taut screw thread center pin 13, extrude third airtight circle 19, seal valve core casing 11 cavity, thereby reach the inner tube air retention effect, at this moment, second airtight circle 18 scarf joint is in the intake duct 23 in air cock body 21, and form sealedly with intake duct 23, under the condition of receiving high temperature or low temperature, at this moment air cock body 21 takes place the thermal expansion shrinkage phenomenon, lead to second airtight circle 18 and intake duct 23 to produce the gap, when the gas tightness effect worsens, through setting up solid fixed ring 14, utilize the effect of the screw-thread installation of external screw thread 17 and internal screw thread 24, first airtight circle 3 still can extrude the side at air cock body 21 through solid fixed ring 14, the gas tightness of air cock body has been guaranteed again.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The three-layer sealing method type valve core comprises a valve core body (1), wherein the valve core body (1) is detachably arranged on the side edge of an inner tube air tap (2), and is characterized in that a first airtight ring (3) is fixedly sleeved on the outer surface of the valve core body (1);

the valve core body (1) comprises a valve core shell (11), a threaded central shaft (13) is movably arranged in the valve core shell (11), a lock nut (12) is arranged on the outer surface of the threaded central shaft (13) in a threaded mode, an inner core body (15) is integrally formed on the side edge of the lock nut (12), an outer thread (17) is arranged on the outer surface of the inner core body (15), a fixing ring (14) is fixedly sleeved on the outer surface of one end of the inner core body (15), a fixing block (16) is fixedly connected to the side edge of the fixing ring (14), a groove is formed in the outer surface of one end, far away from the fixing ring (14), of the inner core body (15), a second airtight ring (18) is fixedly sleeved on the outer surface of the other end of the inner core body (15), a third airtight ring (19) is fixedly sleeved on the outer surface of the other end of the inner core body (15), a valve core seat (20) is fixedly communicated with the side edge of the other end of the inner core body (15), and the first airtight ring (3) is fixedly sleeved on the outer surface of the fixing block (16).

2. The three-layer sealing French valve core according to claim 1, wherein the inner tube air tap (2) comprises an air tap body (21), one end of the air tap body (21) is fixedly provided with a mounting seat (22), an air inlet channel (23) is formed in the air tap body (21), and an internal thread (24) is formed in the other end of the air inlet channel (23).

3. Three-layer sealed valve core according to claim 2, characterized in that the inner core body (15) is screwed inside the inner thread (24) by means of an external thread (17) of the outer surface.

4. The three-layer sealed valve core according to claim 1, characterized in that the diameter of the outer surface of the first airtight ring (3) is the same as the diameter of the fixed ring (14), and the diameter of the outer surface of the first airtight ring (3) is the same as the diameter of the outer surface of the air tap body (21).

5. The three-layer sealed French valve core according to claim 1, characterized in that the second airtight ring (18) has an arc shape, and the second airtight ring (18) is mounted inside the air intake duct (23) in an engagement manner.