Tire valve cap

Abstract

The utility model relates to a tire valve cap which comprises a cap body and a thread head which are axially clamped, the cap body is provided with a cavity, a fixing groove is formed in the cavity, the cap body is provided with a buckle, and a buckle position is formed on the clamping face of the buckle and the thread head; a flange is arranged on the periphery of the thread head, and the face, abutting against the buckling position, of the flange is a buckling position plane. A compression spring is arranged between the cap body and the thread head, the compression spring pushes the thread head to the clamping position through elastic force, so that the buckling position plane abuts against the buckling position, bidirectional fixing is achieved, the thread head and the cap body are located at the positions where the thread head and the cap body abut against each other in the axial direction in the normal state through the cap body and the thread head which are arranged in a clamped mode and the compression spring, and therefore the thread head and the cap body can be fixed. Therefore, when the cap body is rotated, the cap body rotates relative to the thread head, and the thread head is prevented from being detached.

Description

Technical Field

[0001] This application belongs to the technical field of valve caps and relates to a tire valve cap. Background Technology

[0002] Valve caps are mainly used for dust prevention and protection of valve cores, but they usually adopt small-sized thread or press-fit design, which has the following pain points: conventional valve caps have a small diameter, but can be removed by rotating them a few times, which may lead to children accidentally removing them or intentionally removing them and losing them. Valve caps that are assembled with tools have tools that are matched to the valve cap settings, and the structure is too small to be convenient to operate. If the tools are lost, the valve cap will not be able to be removed.

[0003] Therefore, how to provide a tire valve cap that can prevent children from accidentally disassembling it without relying on other tools has become an urgent technical problem to be solved. Utility Model Content

[0004] To overcome the problems existing in the related technology, this application aims to provide a tire valve cap that can prevent children from accidentally disassembling it.

[0005] This application is achieved through the following technical solution.

[0006] This technical solution provides a tire valve cap, comprising: an axially engaging cap body and a threaded head, wherein the cap body has a cavity, a fixing groove is provided in the cavity, and the cap body is provided with a buckle, wherein the buckle and the engaging surface of the threaded head form a fastening position;

[0007] The threaded head has a flange on its outer periphery, and the surface of the flange that abuts against the snap-fit ​​is the snap-fit ​​plane;

[0008] A compression spring is provided between the cap body and the thread head. The compression spring pushes the thread head toward the fastening position with its elastic force, so that the fastening plane abuts against the fastening position, thereby achieving bidirectional fixation.

[0009] The threaded end is also provided with a pin. When the cap moves along the axial direction of the threaded end by external force to overcome the elastic force, the pin slides inside the fixing groove and forms a circumferential constraint.

[0010] This technical solution uses a snap-fit ​​cap and threaded head, with the help of a compression spring, to ensure that the threaded head and cap are in an axially abutting position under normal conditions. At this time, the pin does not cooperate with the fixing groove to form a circumferential constraint between the cap and the threaded head. When the cap is rotated, the cap rotates relative to the threaded head, thus preventing the threaded head from being accidentally disassembled.

[0011] The present invention is further configured such that multiple sets of symmetrical fixing grooves are provided in the cavity, and a snap fastener is formed between adjacent fixing grooves. The multiple snap fasteners and the engagement surface of the thread head together define the snap position.

[0012] The present invention is further configured such that the cap body includes an outer cap and an inner liner, the inner liner being embedded inside the outer cap;

[0013] The inner liner has a through-hole fixing groove at one end near the thread head to form a snap-fit.

[0014] The present invention is further provided that guide angles are provided on both sides of the suspended end of the buckle, and the guide angles are used to guide the movement of the pin so that the pin enters the fixing groove.

[0015] The present invention is further configured such that the pin is a protrusion on both sides of the thread head, and the height of the protrusion is greater than the height of the flange.

[0016] The present invention is further configured such that the threaded head has a pin hole corresponding to the pin, and the pin is embedded in the pin hole.

[0017] The present invention is further provided that the outer periphery of the pin is provided with a frosted surface, which is used to increase the friction between the pin and the thread head.

[0018] The present invention is further provided that the end of the thread head near the cap body is provided with a spring groove, the spring groove being used to limit the position of the compression spring.

[0019] The present invention is further provided that the end of the threaded head away from the cap body is provided with an installation groove, and a sealing ring is provided inside the installation groove. The sealing ring is used to seal the connection gap between the cap body and the threaded head.

[0020] The present invention is further provided with a limiting protrusion at the end of the thread head away from the cap body, the limiting protrusion being used to restrict the movement path of the cap body along the axial direction of the thread head.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0023] Figure 1 This is a cross-sectional view shown in one embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure shown in one embodiment of this application;

[0025] Figure 3 This is an exploded view shown in one embodiment of this application;

[0026] Figure 4 This is an exploded front view shown in one embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the lining structure shown in one embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the threaded head structure shown in one embodiment of this application.

[0029] Reference numerals: 1. Threaded head; 11. Flange; 1101. Snap-in plane; 12. Pin hole; 13. Mounting groove; 14. Spring groove; 2. Outer cap; 3. Inner liner; 31. Fixing groove; 32. Snap fastener; 3201. Guide angle; 3202. Snap-in position; 4. Compression spring; 5. Pin; 51. Frosted surface; 6. Sealing ring. Detailed Implementation

[0030] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0032] This embodiment discloses a tire valve cap, such as Figures 1-6 As shown, it includes: an axially engaging cap body and a threaded head 1. The cap body has a cavity, and a fixing groove 31 is provided in the cavity. The cap body is provided with a buckle 32, and the buckle 32 and the engaging surface of the threaded head 1 form a buckle position 3202.

[0033] The threaded head 1 has a flange 14 on its outer periphery, and the surface of the flange 14 that abuts against the snap-fit ​​3202 is the snap-fit ​​plane 1101;

[0034] A compression spring 4 is provided between the cap body and the threaded head 1. The compression spring 4 pushes the threaded head 2 toward the snap position 3202 by its elastic force, so that the snap position plane 1101 abuts against the snap position 3202, thereby achieving bidirectional fixation.

[0035] The threaded head 1 is also provided with a pin 5. When the cap moves along the axial direction of the threaded head 1 by external force to overcome the elastic force, the pin 5 slides inside the fixing groove 31 and forms a circumferential constraint.

[0036] It should be noted that during assembly, after the threaded head 1 is pushed into the cap body to a certain depth, the snap-fit ​​plane 1101 of the threaded head 1 can be engaged with the snap-fit ​​3202 of the cap body through the external pushing force of the compression spring 4. At the same time, the force of the compression spring 4 cannot pop the threaded head 1 out, thus completing the assembly. When the air valve cap is in use, the cap body is moved towards the threaded head 1, and the pin 5 can enter the fixing groove 31. At this time, the pin 5 will restrict the cap body from rotating alone. When the cap body rotates, it will drive the threaded head 1 to rotate at the same time, thereby removing the air valve cap and completing the disassembly of the air valve cap.

[0037] By means of the snap-fit ​​cap body and threaded head 1, and with the help of the compression spring 4, the threaded head 1 and the cap body are in an axially abutting position under normal conditions. At this time, the pin 5 fails to cooperate with the fixing groove 31 to form a circumferential constraint between the cap body and the threaded head 1. When the cap body is rotated, the cap body rotates relative to the threaded head 1 to prevent the threaded head 1 from being disassembled when the cap body is subjected to rotational force.

[0038] like Figures 1-6 As shown, multiple sets of symmetrical fixing grooves 31 are provided in the cavity, and buckles 32 are formed between adjacent fixing grooves 31. The multiple buckles 32 and the engagement surface of the thread head 1 together define the buckle position 3202.

[0039] like Figures 1-5 As shown, the hat body includes an outer hat 2 and an inner liner 3, with the inner liner 3 embedded inside the outer hat 2;

[0040] The inner liner 3 has a through-hole fixing groove 31 at one end near the thread head 1 to form a snap-fit ​​32.

[0041] It should be noted that the outer cap 2 and the inner lining 3 are made separately and then combined to form the cap body, which can reduce the difficulty of making the cap body.

[0042] like Figures 3-5 As shown, guide angles 3201 are provided on both sides of the suspended end of the buckle 32. The guide angles 3201 are used to guide the movement of the pin 5 so that the pin 5 enters the fixing groove 31.

[0043] It should be noted that setting the guide angle 3201 can expand the opening size of the fixing groove 31, making it easier for the pin 5 to enter the fixing groove 31.

[0044] like Figure 1 As shown, the pin 5 is a protrusion on both sides of the threaded head 1, and the height of the protrusion is greater than the height of the flange 14.

[0045] like Figures 3-4 and Figure 6 As shown, the threaded head 1 has a pin hole 12 corresponding to the pin 5, and the pin 5 is embedded in the pin hole 12.

[0046] It should be noted that the pin 5 is easy to manufacture and assemble separately, and the integrated manufacturing can avoid loss. The pin 5 can slide inside the fixing groove 31 and form a circumferential constraint between the cap body and the thread head 1.

[0047] like Figure 3 and Figure 4 As shown, the outer periphery of the pin 5 is provided with a frosted surface 51, which is used to increase the friction between the pin 5 and the threaded head 1.

[0048] like Figure 2 and Figure 6 As shown, the threaded head 1 has a spring groove 14 at one end near the cap body. The spring groove 14 is used to limit the position of the compression spring 14.

[0049] like Figures 1-4 and Figure 6 As shown, the end of the threaded head 1 away from the cap body is provided with a mounting groove 13, and a sealing ring 6 is provided inside the mounting groove 13. The sealing ring 6 is used to seal the connection gap between the cap body and the threaded head 1.

[0050] It should be noted that after the sealing ring 6 is inserted into the cap body along with the threaded head 1, the sealing ring 6 is subjected to radial compression to generate reverse elastic stress, which generates continuous contact pressure with the inner wall of the cap body, forming an interference seal fit, preventing foreign matter from entering and causing the internal structure to jam or fail after long-term use.

[0051] like Figures 1-4 and Figure 6 As shown, a limiting protrusion is provided at the end of the threaded head 1 away from the cap body. The limiting protrusion is used to restrict the movement path of the cap body along the axial direction of the threaded head 1.

[0052] Working principle: By engaging the cap body and the threaded head 1, and with the help of the compression spring 4, the threaded head 1 and the cap body are in an axially abutting position under normal conditions. At this time, the pin 5 does not cooperate with the fixing groove 31 to form a circumferential constraint between the cap body and the threaded head 1. When the cap body is rotated, the cap body rotates relative to the threaded head 1, preventing the threaded head 1 from being disassembled when the cap body is only subjected to rotational force.

[0053] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A tire valve cap, characterized in that, include: A cap body and a threaded head (1) are axially engaged. The cap body has a cavity with a fixing groove (31) inside the cavity. The cap body is provided with a buckle (32), and the buckle (32) and the engagement surface of the threaded head (1) form a buckle (3202). The threaded head (1) has a flange (11) on its outer periphery, and the surface of the flange (11) that abuts against the fastener (3202) is the fastener plane (1101). A compression spring (4) is provided between the cap body and the threaded head (1). The compression spring (4) pushes the threaded head (1) towards the fastening position (3202) with elastic force, so that the fastening plane (1101) abuts against the fastening position (3202) to achieve bidirectional fixation. The threaded head (1) is also provided with a pin (5). When the cap moves along the axial direction of the threaded head (1), the pin (5) slides inside the fixing groove (31) and forms a circumferential constraint.

2. The tire valve cap according to claim 1, characterized in that, Multiple sets of symmetrical fixing grooves (31) are provided in the cavity, and a buckle (32) is formed between adjacent fixing grooves (31). The multiple buckles (32) and the engagement surface of the thread head (1) together define the buckle position (3202).

3. The tire valve cap according to claim 1, characterized in that, The cap body includes an outer cap (2) and an inner liner (3), wherein the inner liner (3) is embedded inside the outer cap (2); The liner (3) has a through-hole fixing groove (31) at one end near the thread head (1) to form a snap (32).

4. The tire valve cap according to claim 1, characterized in that, The buckle (32) has guide angles (3201) on both sides of the suspended end. The guide angles (3201) are used to guide the pin (5) to move so that the pin (5) enters the fixing groove (31).

5. The tire valve cap according to claim 1, characterized in that, The pin (5) is a protrusion on both sides of the threaded head (1), and the height of the protrusion is greater than the height of the flange (11).

6. The tire valve cap according to claim 1, characterized in that, The threaded head (1) has a pin hole (12) corresponding to the pin (5), and the pin (5) is embedded in the pin hole (12).

7. The tire valve cap according to claim 6, characterized in that, The outer periphery of the pin (5) is provided with a frosted surface (51), which is used to increase the friction between the pin (5) and the thread head (1).

8. The tire valve cap according to claim 1, characterized in that, The threaded end (1) near the cap body is provided with a spring groove (14), which is used to limit the position of the compression spring (4).

9. The tire valve cap according to claim 1, characterized in that, The threaded head (1) has an installation groove (13) at one end away from the cap body. The installation groove (13) has a sealing ring (6) inside. The sealing ring (6) is used to seal the connection gap between the cap body and the threaded head (1).

10. The tire valve cap according to claim 1, characterized in that, The threaded head (1) has a limiting protrusion at one end away from the cap body, which is used to limit the axial movement path of the cap body along the threaded head (1).

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