An inflation chuck

Abstract

The utility model discloses an inflation chuck, including inflation main part and clamping main part, the outer peripheral wall of inflation main part is equipped with two cut -out grooves of opposite setting, clamping main part includes the compression ring subassembly of outer sleeve and being located in the elastic element, two clamping pieces of outer sleeve, and the installation space is arranged between the outer peripheral wall of inflation main part and the inner peripheral wall of outer sleeve, and the compression ring subassembly, elastic element are arranged in installation space from top to bottom in proper order, and the elastic force of elastic element drives compression ring subassembly and presses tightly outer sleeve, and clamping piece includes the clamping part of slidable setting in cut -out groove and the clamping part of two ends of being connected to clamping part and extending cut -out groove outside, and the compression ring subassembly includes upper compression ring and lower compression ring, and upper compression ring and lower compression ring surround and form the limiting slot, and the clamping part is clamped between upper compression ring and lower compression ring, and the circumferential activity of clamping part is limited in limiting slot. Clamping part will not knock and wear compression ring subassembly, and limiting slot can prevent clamping part and knock the inner peripheral wall of outer sleeve.

Description

Technical Field

[0001] This utility model relates to the field of inflation devices, and in particular to an inflation clamp. Background Technology

[0002] For pneumatic tires, a valve needs to be installed on the tire. When the tire pressure is low, the inflation clamp needs to be connected to the valve, and the tire is inflated by an air pump. The inflation process is as follows: press the outer sleeve to make it retract against the spring pressure, the clamping part retracts outward, the valve is inserted into the inflation clamp, the outer sleeve is released, and under the action of the spring, the clamping part clamps the external thread of the valve inward and inflates.

[0003] For existing inflatable chucks, refer to the inflatable chuck disclosed in Chinese Patent CN111152610B, as shown in its specification appendix. Figure 4 As can be seen, the slot on the sleeve for accommodating the clamping component is connected to the inner wall of the outer sleeve. In this case, pressing the outer sleeve can easily cause the clamping component to shift and hit the inner wall of the outer sleeve, which will wear down the outer sleeve and the clamping component, resulting in a short service life of the inflation clamp. During maintenance, both the outer sleeve and the clamping component must be replaced at the same time, resulting in high maintenance costs.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide an inflation clamp whose pressure ring assembly includes an upper pressure ring and a lower pressure ring. The upper and lower pressure rings form a limiting groove, and the circumferential movement of the locking part is restricted by the limiting groove. During use, the locking part is stationary relative to the pressure ring assembly in the vertical direction, so that the locking part will not bump or wear the pressure ring assembly. At the same time, the limiting groove can prevent the locking part from bumping against the inner circumferential wall of the outer sleeve. The ingenious structural design improves the service life of the inflation clamp.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An inflatable chuck, comprising:

[0008] An inflatable body is provided, which is used to connect to an air tube. The outer peripheral wall of the inflatable body has two oppositely arranged slits.

[0009] The clamping body is disposed on the outer periphery of the inflatable body. The clamping body includes an outer sleeve and a pressure ring assembly, an elastic element, and two clamping elements located inside the outer sleeve. An installation space is provided between the inner peripheral wall of the outer sleeve and the outer peripheral wall of the inflatable body. The pressure ring assembly and the elastic element are arranged sequentially from top to bottom in the installation space. The elastic force of the elastic element drives the pressure ring assembly to press against the outer sleeve. The clamping elements include a clamping part slidably disposed in a slit groove and a snap-fit ​​part connected to both ends of the clamping part and extending out of the slit groove. The pressure ring assembly includes an upper pressure ring and a lower pressure ring. The upper pressure ring and the lower pressure ring form a limiting groove. The snap-fit ​​part is clamped between the upper pressure ring and the lower pressure ring, and the circumferential movement of the snap-fit ​​part is restricted in the limiting groove.

[0010] As a preferred embodiment, the bottom of the upper pressure ring has a first stop protruding at the end corresponding to the snap-fit ​​portion, and the top of the lower pressure ring has a second stop on the side of the snap-fit ​​portion near the outer sleeve. The first stop and the second stop together form the limiting groove.

[0011] As a preferred embodiment, the top of the lower pressure ring is provided on the side of the snap-fit ​​portion away from the outer sleeve, which can restrict the rotation of the upper pressure ring relative to the lower pressure ring. The first stop is located between the second stop and the third stop, and the movement of the first stop is restricted by the third stop.

[0012] As a preferred embodiment, the second stop is provided with a clearance groove for the clamping part to move and avoid.

[0013] As a preferred embodiment, both the upper and lower pressure rings are made of copper.

[0014] As a preferred embodiment, the outer peripheral wall of the inflatable body is provided with a first step portion, and correspondingly, the inner peripheral wall of the outer sleeve is provided with a second step portion. The first step portion, the second step portion, the inner peripheral wall of the outer sleeve, and the outer peripheral wall of the inflatable body together form the installation space. The bottom of the elastic member abuts against the first step portion, the top of the elastic member abuts against the bottom of the pressure ring assembly, and the elastic force of the elastic member drives the top of the pressure ring assembly to press against the second step portion.

[0015] As a preferred embodiment, the outer peripheral wall of the inflatable body is provided with an installation groove for installing a retaining ring. The installation groove is located above the second step, and a retaining ring is fitted in the installation groove. The top movement of the second step is restricted by the retaining ring.

[0016] As a preferred embodiment, the lower half of the outer peripheral wall of the outer sleeve is provided with an anti-slip portion.

[0017] As a preferred embodiment, the inflatable body is provided with a docking groove and an air inlet groove, the slit groove connects the docking groove and the outside of the inflatable body, and an inflation connector is provided in the docking groove.

[0018] As a preferred embodiment, the thickness of the lower pressure ring is greater than the thickness of the upper pressure ring.

[0019] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0020] The main feature is that the pressure ring assembly includes an upper pressure ring and a lower pressure ring. The upper and lower pressure rings form a limiting groove, and the circumferential movement of the locking part is restricted by the limiting groove. During use, the locking part does not move relative to the pressure ring assembly in the vertical direction, so the locking part will not bump or wear the pressure ring assembly. At the same time, the limiting groove can prevent the locking part from bumping against the inner circumferential wall of the outer sleeve. The ingenious structural design improves the service life of the inflation clamp.

[0021] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 This is a perspective view of a preferred embodiment of the present utility model;

[0023] Figure 2 This is an exploded view of a preferred embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0025] Figure 4 This is another cross-sectional schematic diagram of a preferred embodiment of the present invention.

[0026] Explanation of reference numerals in the attached diagram:

[0027] 10. Inflatable body; 101. Cut groove;

[0028] 102. First step section; 103. Mounting slot;

[0029] 104. Docking groove; 105. Air inlet groove;

[0030] 20. Clamping body; 21. Outer sleeve;

[0031] 22. Pressure ring assembly; 221. Upper pressure ring;

[0032] 222. Lower pressure ring; 223. First stop;

[0033] 224. Second stop; 225. Third stop;

[0034] 23. Elastic components;

[0035] 24. Clamping component; 241. Clamping part;

[0036] 242. Snap-fit ​​part; 201. Limiting groove;

[0037] 202. Clearance groove; 203. Second step section;

[0038] 204. Anti-slip part; 30. Installation space;

[0039] 40. Snap ring; 50. Inflation connector. Detailed Implementation

[0040] First, it should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including an inflatable body 10 and a clamping body 20.

[0042] The inflatable body 10 is used to connect to the air pipe, and the outer peripheral wall of the inflatable body 10 is provided with two oppositely arranged cut grooves 101.

[0043] The clamping body 20 is disposed on the outer periphery of the inflatable body 10. The clamping body 20 includes an outer sleeve 21 and a pressure ring assembly 22, an elastic element 23, and two clamping elements 24 located inside the outer sleeve 21. An installation space 30 is provided between the inner peripheral wall of the outer sleeve 21 and the outer peripheral wall of the inflatable body 10. The pressure ring assembly 22 and the elastic element 23 are arranged sequentially from top to bottom in the installation space 30. The elastic force of the elastic element 23 drives the pressure ring assembly 22 to press against the outer sleeve 21. The clamping member 24 includes a clamping part 241 slidably disposed in the cut groove 101 and a snap-fit ​​part 242 connected to both ends of the clamping part 241 and extending out of the cut groove 101. The pressure ring assembly 22 includes an upper pressure ring 221 and a lower pressure ring 222. The upper pressure ring 221 and the lower pressure ring 222 form a limiting groove 201. The snap-fit ​​part 242 is clamped between the upper pressure ring 221 and the lower pressure ring 222, and the circumferential movement of the snap-fit ​​part 242 is restricted in the limiting groove 201.

[0044] The bottom of the upper pressure ring 221 is provided with a first stop 223 at the end of the snap-fit ​​part 242, and the top of the lower pressure ring 222 is provided with a second stop 224 on the side of the snap-fit ​​part 242 near the outer sleeve 21. The first stop 223 and the second stop 224 together form the limiting groove 201.

[0045] See Figure 2 and Figure 4 As shown, specifically, there are four first stops 223 arranged in a square shape, which restrict the movement of the clamping member 24 in the front-back direction. There are two second stops 224, which restrict the movement of the clamping member 24 outward. The second stops 224 are provided with relief grooves 202 for the clamping member 241 to move and avoid. When the engaging member 242 moves in the limiting groove 201, it can prevent the clamping member 241 from hitting the lower pressure ring 222. The relief groove 202 is a through groove that passes through the inner and outer walls of the lower pressure ring 222, so that there are four second stops 224 arranged in a square shape.

[0046] Preferably, the top of the lower pressure ring 222 is provided with a third stop 225 on the side of the snap-fit ​​portion 242 away from the outer sleeve 21, which can restrict the rotation of the upper pressure ring 221 relative to the lower pressure ring 222. The first stop 223 is located between the second stop 224 and the third stop 225. The movement of the first stop 223 is restricted by the third stop 225. The setting of the third stop 225 can avoid the phenomenon that the clamping member 24 will be displaced due to the slight rotation of the lower pressure ring 222, which would cause the outer sleeve 21 to be unable to be pressed down, and further ensure that the outer sleeve 21 can operate normally. In this embodiment, both the upper pressure ring 221 and the lower pressure ring 222 are made of copper, and the thickness of the lower pressure ring 222 is greater than the thickness of the upper pressure ring 221.

[0047] See Figure 2 and Figure 3 As shown, the outer peripheral wall of the inflatable body 10 is provided with a first step portion 102, and correspondingly, the inner peripheral wall of the outer sleeve 21 is provided with a second step portion 203. The first step portion 102, the second step portion 203, the inner peripheral wall of the outer sleeve 21, and the outer peripheral wall of the inflatable body 10 together form the installation space 30. The bottom of the elastic member 23 abuts against the first step portion 102, and the top of the elastic member 23 abuts against the bottom of the pressure ring assembly 22. The elastic force of the elastic member 23 drives the top of the pressure ring assembly 22 to press against the second step portion 203. The elastic member 23 is a spring.

[0048] Specifically, the outer peripheral wall of the inflatable body 10 is provided with an installation groove 103 for installing the retaining ring 40. The installation groove 103 is located above the second step portion 203. The retaining ring 40 is fitted in the installation groove 103, and the top movement of the second step portion 203 is restricted by the retaining ring 40. The inflatable body 10 is provided with a docking groove 104 and an air inlet groove 105. The cut groove 101 connects the docking groove 104 and the outside of the inflatable body 10. An inflation connector 50 is provided in the docking groove 104.

[0049] See Figure 1 As shown, the lower half of the outer peripheral wall of the outer sleeve 21 is provided with an anti-slip part 204, which facilitates the application of force when pressing the outer sleeve 21.

[0050] The key design feature of this utility model is:

[0051] The main feature is that the pressure ring assembly includes an upper pressure ring and a lower pressure ring. The upper and lower pressure rings form a limiting groove, and the circumferential movement of the locking part is restricted by the limiting groove. During use, the locking part does not move relative to the pressure ring assembly in the vertical direction, so the locking part will not bump or wear the pressure ring assembly. At the same time, the limiting groove can prevent the locking part from bumping against the inner circumferential wall of the outer sleeve. The ingenious structural design improves the service life of the inflation clamp.

[0052] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An inflatable chuck, characterized in that, include: An inflatable body is provided, which is used to connect to an air tube. The outer peripheral wall of the inflatable body has two oppositely arranged slits. The clamping body is disposed on the outer periphery of the inflatable body. The clamping body includes an outer sleeve and a pressure ring assembly, an elastic element, and two clamping elements located inside the outer sleeve. An installation space is provided between the inner peripheral wall of the outer sleeve and the outer peripheral wall of the inflatable body. The pressure ring assembly and the elastic element are arranged sequentially from top to bottom in the installation space. The elastic force of the elastic element drives the pressure ring assembly to press against the outer sleeve. The clamping elements include a clamping part slidably disposed in a slit groove and a snap-fit ​​part connected to both ends of the clamping part and extending out of the slit groove. The pressure ring assembly includes an upper pressure ring and a lower pressure ring. The upper pressure ring and the lower pressure ring form a limiting groove. The snap-fit ​​part is clamped between the upper pressure ring and the lower pressure ring, and the circumferential movement of the snap-fit ​​part is restricted in the limiting groove.

2. The inflatable chuck according to claim 1, characterized in that: The bottom of the upper pressure ring has a first stop protruding at the end corresponding to the snap-fit ​​part, and the top of the lower pressure ring has a second stop on the side of the snap-fit ​​part near the outer sleeve. The first stop and the second stop together form the limiting groove.

3. An inflatable chuck according to claim 2, characterized in that: The top of the lower pressure ring is provided on the side of the snap-fit ​​portion away from the outer sleeve, which is a third stop that can restrict the rotation of the upper pressure ring relative to the lower pressure ring. The first stop is located between the second stop and the third stop, and the movement of the first stop is restricted by the third stop.

4. An inflatable chuck according to claim 2, characterized in that: The second stop is provided with a clearance groove for the clamping part to move and avoid.

5. An inflatable chuck according to claim 1, characterized in that: Both the upper and lower pressure rings are made of copper.

6. An inflatable chuck according to claim 1, characterized in that: The outer peripheral wall of the inflatable body is provided with a first step portion, and correspondingly, the inner peripheral wall of the outer sleeve is provided with a second step portion. The first step portion, the second step portion, the inner peripheral wall of the outer sleeve, and the outer peripheral wall of the inflatable body together form the installation space. The bottom of the elastic member abuts against the first step portion, the top of the elastic member abuts against the bottom of the pressure ring assembly, and the elastic force of the elastic member drives the top of the pressure ring assembly to press against the second step portion.

7. An inflatable chuck according to claim 6, characterized in that: The outer peripheral wall of the inflatable body is provided with an installation groove for installing the retaining ring. The installation groove is located above the second step. The retaining ring is fitted in the installation groove, and the top movement of the second step is restricted by the retaining ring.

8. An inflatable chuck according to claim 1, characterized in that: The lower half of the outer peripheral wall of the outer sleeve is provided with an anti-slip part.

9. An inflatable chuck according to claim 1, characterized in that: The inflatable body is provided with a docking groove and an air inlet groove. The cut groove connects the docking groove and the outside of the inflatable body. An inflatable connector is provided in the docking groove.

10. An inflatable chuck according to claim 1, characterized in that: The thickness of the lower pressure ring is greater than that of the upper pressure ring.

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