Inflation device
By introducing a valve core and elastic rubber sleeve into the inflation device, the problem of needing to operate the nut in existing inflation devices is solved, enabling direct connection and sealing with American and French air valves, simplifying the operation process and improving the user experience.
Patent Information
- Application Number
- CN202520280335.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Existing inflation devices require operating nuts when inflating American and French valves, resulting in a poor user experience and a heavy workload.
Design an inflation device that utilizes a valve core and an elastic rubber sleeve inside the housing. Different sizes of air nozzles can be accommodated by different openings of the elastic rubber sleeve, achieving direct connection and sealing, thus eliminating the need for traditional nut connection methods.
It achieves universal sealing for both American and French valves, simplifies the operation process, and improves the user experience.
Smart Images
Figure CN223938764U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inflation technology, specifically an inflation device. Background Technology
[0002] like Figure 1 and Figure 2 As shown, in existing products, the housing of the inflation device is equipped with a nut 1', which has a large internal thread and a small internal thread. A sealing ring 2' is installed inside the nut 1'. When inflating a tire with an American-style valve, if... Figure 1 As shown, the nut 1' of the inflation device needs to be screwed onto the tire valve (American-style valve) through the large internal thread until the sealing ring inside the nut presses against the tire valve to achieve a seal, thus preventing air leakage during inflation. For example... Figure 2 As shown, when inflating a tire with a French valve, the nut 1' of the inflation device needs to be screwed onto the tire valve (French valve) through the small internal thread until the sealing ring inside the nut is placed on the tire valve to achieve a seal, so that there is no air leakage when inflating.
[0003] Therefore, for existing products, users need to operate nut 1' to achieve a seal. After inflation, they also need to reverse the nut to detach the inflation device from the tire valve. As a result, users have to perform many operations during inflation, resulting in a large workload and a poor user experience.
[0004] Therefore, it is necessary to improve and optimize existing inflation devices. Utility Model Content
[0005] This invention aims to solve at least one of the problems of the prior art. To this end, this invention provides an inflation device that can be directly connected to the tire valve and sealed by pressing it down, making inflation simple and convenient. It is also compatible with both American and French valves, offering good versatility.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] An inflation device, comprising:
[0008] A housing having a first cavity and a second cavity;
[0009] A valve core is disposed in the first cavity. The valve core is provided with an axially extending air passage, and an air hole is provided on the side wall of the valve core. The air hole communicates with the air passage.
[0010] The push rod has one end located in the air passage of the valve core and the other end extending out of the housing. The push rod is provided with a first annular groove, the radial dimension of which is smaller than the radial dimension of the air passage, and the first annular groove corresponds to the position of the air hole.
[0011] A spring is fitted onto the push rod, with one end of the spring abutting against the valve core;
[0012] An elastic rubber sleeve is disposed in the first cavity of the housing. The elastic rubber sleeve is provided with an axially extending first set of openings and a second set of openings. The radial dimension of the first set of openings is smaller than that of the second set of openings. The first set of openings and the second set of openings are disposed adjacent to each other and are located inside the second set of openings.
[0013] A fixing sleeve is disposed on the housing and axially limits the elastic rubber sleeve.
[0014] Optionally, the fixing sleeve is threaded onto the housing, and the elastic rubber sleeve extends out of the housing and abuts against the fixing sleeve.
[0015] Optionally, a limiting sleeve is provided between the valve core and the elastic rubber sleeve, and the limiting sleeve abuts against the valve core and the elastic rubber sleeve respectively.
[0016] Optionally, the second set of slots has several raised ribs on the hole wall.
[0017] Optionally, the airway is provided with a slot, and a sealing ring is provided in the slot.
[0018] Optionally, the valve core is threaded into the first cavity, the push rod is provided with a convex ring, and a limit ring is provided in the first cavity. The limit ring cooperates with the convex ring to limit the axial displacement of the push rod.
[0019] Optionally, the valve core has a notch on its end face for accommodating a screwdriver.
[0020] Optionally, a second annular groove is provided on the outer peripheral wall of the valve core, and the air hole is provided on the second annular groove, wherein there are one or more air holes.
[0021] Optionally, a top core is provided in the second cavity, and the top core is in communication with the air hole.
[0022] This utility model has at least one of the following beneficial effects: In this embodiment, a valve core is provided inside the housing, the valve core has an axially extending air passage, and an air hole is provided on the side wall of the valve core, the air hole communicating with the air passage; one end of a push rod is located in the air passage of the valve core, and the other end extends out of the housing; the push rod has a first annular groove, the radial dimension of which is smaller than the radial dimension of the air passage, the first annular groove corresponding to the position of the air hole; a spring is sleeved on the push rod; an elastic rubber sleeve is provided inside the housing, the elastic rubber sleeve has an axially extending first set of openings and a second set of openings, the radial dimension of the first set of openings is smaller than the radial dimension of the second set of openings, the first set of openings and the second set of openings are adjacent to each other and located inside the second set of openings; A fixed sleeve is provided on the housing to axially limit the elastic rubber sleeve. When the tire needs to be inflated, the elastic rubber sleeve is simply placed on the tire valve. The wall of the first set of holes with a smaller size on the elastic rubber sleeve seals the French valve, or the wall of the second set of holes with a larger size on the elastic rubber sleeve seals the American valve. This eliminates the need for a nut in the prior art to connect the tire valve by tightening the nut. Furthermore, the structure described in this embodiment can be used for both American and French valves, so users do not need to purchase two inflation devices or valve conversion parts, making it more convenient for users and improving the user experience. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the connection structure between the American-style air valve and the nut during inflation in existing products.
[0024] Figure 2 This is a schematic diagram of the connection structure between the French valve and the nut during inflation in existing products.
[0025] Figure 3 This is a three-dimensional structural diagram of the inflation device in an embodiment of this utility model;
[0026] Figure 4 yes Figure 3 Another angle view of the structure shown;
[0027] Figure 5 yes Figure 3 A cross-sectional three-dimensional structural diagram of the structure shown;
[0028] Figure 6 yes Figure 5 The diagram shows a cross-sectional view of the structure in the inflated state.
[0029] Figure 7 This is a three-dimensional structural diagram of the valve core in an embodiment of this utility model;
[0030] Figure 8This is a three-dimensional structural diagram of the elastic rubber sleeve in an embodiment of this utility model;
[0031] Figure 9 This is a cross-sectional structural diagram of the embodiment of this utility model when connected to an American-style tire valve;
[0032] Figure 10 This is a cross-sectional structural diagram of the embodiment of the present invention when connected to a tire valve.
[0033] Explanation of icon numbers:
[0034] 1-Housing, 11-First cavity, 12-Second cavity, 13-Limiting ring, 14-Air inlet channel, 2-Valve core, 21-Notch, 22-Air passage, 23-Air hole, 24-Second ring groove, 25-Sealing ring, 3-Push rod, 31-First ring groove, 32-Protruding ring, 4-Spring, 5-Elastic rubber sleeve, 51-First set of openings, 52-Second set of openings, 53-Protruding rib, 6-Fixing sleeve, 7-Limiting sleeve, 8-Top core. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described below can be arbitrarily combined with each other.
[0036] The following provides many different implementation methods or examples for realizing the structure of this utility model.
[0037] See Figures 3-10An inflatable device according to an embodiment of the present invention includes: a housing 1, wherein a first cavity 11 and a second cavity 12 are provided on the housing 1, the first cavity 11 axially penetrating the housing 1; a valve core 2 disposed within the first cavity 11; in this embodiment, the valve core 2 is threadedly connected to the first cavity 11; to facilitate the installation of the valve core 2, a notch 21 for accommodating a screwdriver is provided on the end face of the valve core 2; an axially extending air passage 22 is provided on the valve core 2, and an air hole 23 is provided on the side wall of the valve core 2, the air hole 23 communicating with the air passage 22; to achieve sealing of the air passage 22 when not inflated, in some embodiments of the present invention, a groove is provided in the air passage 22, and a sealing ring 25 is provided in the groove; and a push rod 3, one end of which is located in the air passage 22 of the valve core 2, and the other end extends out of the housing 1; the push rod 3 has... A first annular groove 31 is provided, the radial dimension of which is smaller than that of the air passage 22, and the first annular groove 31 corresponds to the position of the air hole 23; a spring 4 is sleeved on the push rod 3, one end of which abuts against the valve core 2; an elastic rubber sleeve 5 is provided in the first cavity 11 of the housing 1, and the elastic rubber sleeve 5 is provided with an axially extending first set of ports 51 and a second set of ports 52. The radial dimensions of the first set of ports 51 and the second set of ports 52 are designed according to the size of the French valve and the American valve, wherein the radial dimension of the first set of ports 51 is smaller than that of the second set of ports 52, the first set of ports 51 and the second set of ports 52 are arranged adjacent to each other and are located inside the second set of ports 52; a fixing sleeve 6 is provided on the housing 1 and axially limits the elastic rubber sleeve 5.
[0038] See details Figure 6 As shown, in some embodiments of this utility model, the fixing sleeve 6 is threaded onto the housing 1, and the elastic rubber sleeve 5 extends out of the housing and abuts against the fixing sleeve 6. This structure allows the axial displacement of the fixing sleeve 6 to be adjusted by twisting it, thereby compressing the elastic rubber sleeve 5. The elastic rubber sleeve 5 deforms, causing the first set of openings 51 and the second set of openings 52 to shrink, thereby improving the sealing performance between the elastic rubber sleeve 5 and the tire valve.
[0039] See details Figure 6 As shown, in some embodiments of this utility model, a limiting sleeve 7 is provided between the valve core 2 and the elastic rubber sleeve 5, and the limiting sleeve 7 abuts against both the valve core 2 and the elastic rubber sleeve 5. The limiting sleeve 7 shortens the length of the valve core 2, thereby facilitating the installation of a sealing ring inside the valve core 2.
[0040] See details Figure 6 and Figure 8As shown, in some embodiments of this utility model, the second set of sockets 52 is provided with a plurality of protruding ribs 53 on the hole wall. The arrangement of the protruding ribs 53 does not affect the connection between the second set of sockets 52 and the tire valve, and can improve the sealing between the two.
[0041] See details Figure 6 As shown, in some embodiments of this utility model, the push rod 3 is provided with a protruding ring 32, and a limiting ring 13 is provided in the first cavity 11. The limiting ring 13 cooperates with the protruding ring 32 to limit the axial displacement of the push rod 3. Thus, the installation of the push rod 3 becomes simple; the push rod 3 can be directly inserted into the first cavity 11 from right to left.
[0042] See details Figure 6 and Figure 7 As shown, in some embodiments of this utility model, a second annular groove 24 is provided on the outer peripheral wall of the valve core 2, and the air hole 23 is provided on the second annular groove 24. There are one or more air holes 23. With the provision of the second annular groove 24, the gas in the air inlet channel 14 can enter the air hole 23 through the second annular groove 24, so that the installation of the valve core 2 does not need to consider whether the air hole 23 is aligned with the air inlet channel 14 in the housing 1, which greatly facilitates the assembly of the valve core 2.
[0043] See details Figure 6 As shown, in some embodiments of this utility model, a top core 8 is provided in the second cavity 12. The top core 8 is connected to the air hole 23, specifically through the air inlet channel 13. The top core 8 is used to puncture the carbon dioxide cylinder.
[0044] The working principle of this utility model embodiment is as follows: See Figure 5 As shown, the push rod 3 is in its initial state under the action of the spring 4. At this time, the first annular groove 31 on the push rod 3 is misaligned with the sealing ring 25 in the air passage 22, and the sealing ring 25 abuts against the outer circumferential surface of the push rod 3 to form a seal. When inflation is required, the carbon dioxide cylinder is connected to the second cavity 12 by a thread. The carbon dioxide cylinder is punctured by the top core 8, and the high-pressure carbon dioxide in the cylinder enters the air hole 23 from the air inlet 14 and enters the air passage 22. Due to the sealing effect of the sealing ring 25, the carbon dioxide will not leak out. Then, the elastic rubber sleeve 5 of the inflation device is placed on the tire valve, and a seal is formed between the elastic rubber sleeve 5 and the tire valve. Specifically, the first set of inlets 51 is used to adapt to the French valve (see details). Figure 10 As shown), the second set of ports 52 is used to adapt to American-style valves (see details). Figure 9(As shown); Pressing the push rod 3 causes it to move axially, and the first annular groove 31 on the push rod 3 moves to the position of the sealing ring 25. At this time, a gap is formed between the sealing ring 25 and the first annular groove 31, allowing carbon dioxide gas to pass quickly through the gap and enter the tire valve through the first set of inlets 51 and the second set of inlets 52 of the elastic rubber sleeve 5, completing the inflation. The air path is as follows. Figure 6 As shown by the dashed arrow, when inflating a tire, it is simply necessary to place the elastic rubber sleeve 5 onto the tire valve. The wall of the first set of openings 51 with a smaller size on the elastic rubber sleeve 5 seals the French valve, or the wall of the second set of openings 52 with a larger size on the elastic rubber sleeve 5 seals the American valve. This eliminates the need for a nut in the prior art to connect the tire valve by tightening the nut. Furthermore, the structure described in this embodiment can be used for both American and French valves, eliminating the need for users to equip themselves with two inflation devices or valve conversion parts, thus simplifying the user experience.
[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. An inflation device, characterized in that, include: A housing having a first cavity and a second cavity; A valve core is disposed in the first cavity. The valve core is provided with an axially extending air passage, and an air hole is provided on the side wall of the valve core. The air hole communicates with the air passage. The push rod has one end located in the air passage of the valve core and the other end extending out of the housing. The push rod is provided with a first annular groove, the radial dimension of which is smaller than the radial dimension of the air passage, and the first annular groove corresponds to the position of the air hole. A spring is fitted onto the push rod, with one end of the spring abutting against the valve core; An elastic rubber sleeve is disposed in the first cavity of the housing. The elastic rubber sleeve is provided with an axially extending first set of openings and a second set of openings. The radial dimension of the first set of openings is smaller than that of the second set of openings. The first set of openings and the second set of openings are disposed adjacent to each other and are located inside the second set of openings. A fixing sleeve is disposed on the housing and axially limits the elastic rubber sleeve.
2. The inflation device according to claim 1, characterized in that: The fixing sleeve is threaded onto the housing, and the elastic rubber sleeve extends out of the housing and abuts against the fixing sleeve.
3. The inflation device according to claim 1, characterized in that: A limiting sleeve is provided between the valve core and the elastic rubber sleeve, and the limiting sleeve abuts against the valve core and the elastic rubber sleeve respectively.
4. An inflation device according to claim 1, characterized in that: The second set of insertion holes has several raised ribs on the wall.
5. An inflation device according to any one of claims 1-4, characterized in that: The airway is provided with a slot, and a sealing ring is provided in the slot.
6. An inflation device according to any one of claims 1-4, characterized in that: The valve core is threaded into the first cavity, and a convex ring is provided on the push rod. A limit ring is provided in the first cavity, and the limit ring cooperates with the convex ring to limit the axial displacement of the push rod.
7. An inflation device according to claim 6, characterized in that: The valve core has a notch on its end face for accommodating a screwdriver.
8. An inflation device according to any one of claims 1-4, characterized in that: The outer peripheral wall of the valve core is provided with a second annular groove, and the air hole is provided on the second annular groove, and there are one or more air holes.
9. An inflation device according to any one of claims 1-4, characterized in that: The second cavity is provided with a top core, which is connected to the air hole.