Inflatable mouthpiece for double-layered gripper

Abstract

The invention provides a double-layered clamping jaw inflation connector, comprising: at least one valve plug with a pressing hole, each of which can be connected with an air nozzle; at least one clamping unit, which is composed of an inner jaw part and an outer jaw part; the clamping unit is arranged outside each valve plug, each inner jaw part has a chamber for the fixed insertion of each valve plug, and one end of the clamping jaw is arranged axially and can be stressed to generate a radial position change to press the valve plug and the pressing hole; each outer jaw part is composed of a plurality of jaw pieces, which are arranged at intervals on the outer circumferential side of the inner jaw part; each outer jaw part has a pressing area at one end, which can be pressed to generate a radial inward position change, so that the pressing area can press the clamping jaw of the inner jaw part and the pressing hole of the valve plug, and the valve plug can enhance the pressing effect.

Description

Technical Field

[0001] This invention relates to an inflatable nozzle, specifically an inflatable nozzle that can form a double-layered clamp with a double clamping effect. Background Technology

[0002] The inventor's Taiwan utility model patent M485834 provides a direct-force inflation connector that can be used with one or two different tire valve sizes. The valve head has a valve plug in its valve hole, which can be switched between a first position and a second position. A first connector and a second connector are respectively installed at the two ends of the valve plug, accommodating two different tire valve sizes. This valve plug is equipped with a plurality of first clamps and second clamps. The first clamps are arranged alternately with first grooves to define a first converging orifice that is coaxially arranged with the valve orifice and can be radially converging. This first converging orifice is for coaxial insertion and assembly of the first connector. The second clamps are arranged alternately with second grooves to define a second converging orifice that is coaxially arranged with the valve orifice and can be radially converging. This second converging orifice is for coaxial insertion and assembly of the second connector. When the valve plug is in the first position, the valve orifice releases the second clamps and presses the first clamps, causing the first converging orifice to automatically radially clamp the first connector and inflate the first connector. However, when the valve plug is in the second position, the valve orifice releases the first clamps and presses the second clamps, causing the second converging orifice to automatically radially clamp the second connector and inflate the second connector.

[0003] While the aforementioned prior art can utilize the pressure effect of the first and second grippers to compress the first and second connectors, thereby creating a better airtight effect, the gripping range of the first and second grippers is limited, resulting in a limited compression effect on the first and second connectors, and thus failing to achieve a good airtight effect. Summary of the Invention

[0004] The purpose of this invention is to provide an inflation nozzle that, through a double clamping force, can produce a better airtight effect during the inflation process.

[0005] To achieve the above objectives, the present invention provides an inflation nozzle with double-layer grippers, comprising:

[0006] A body has a chamber, and an air inlet channel is provided on the side of the body and connected to the chamber.

[0007] A connecting seat is slidably disposed in the air chamber and is axially displaceable within the air chamber; the connecting seat is provided with at least one engagement port and at least one air guide port; each air guide port is selectively connected to the air inlet channel, and each air guide port is connected to each engagement port.

[0008] At least one valve plug is connected to each of the joints, and each valve plug is provided with a clamping hole, and each clamping hole is connected to each of the joints;

[0009] At least one clamping unit is composed of an inner claw portion and an outer claw portion;

[0010] Each inner claw portion has a chamber for the valve plug to be forced in and fixed. One end of each inner claw portion is close to the connecting seat, and the other end away from the connecting seat is provided with several long grooves along the axial direction. A clamping claw is formed between the long grooves. The clamping claw can be subjected to force to produce a radial position change, thereby squeezing the valve plug and the clamping hole.

[0011] Each of the outer claw portions is composed of several claw plates, which are spaced apart on the outer periphery of the inner claw portion; each of the claw plates of the outer claw portion has a clamping area at one end; when the outer claw portion moves toward the air chamber of the body, the body causes the clamping area to undergo a radially inward positional change, so that the clamping area can press the gripper of the inner claw portion and the clamping hole of the valve plug.

[0012] In this way, each valve plug will be subjected to the action of the clamping unit. When the valve plug moves into the air chamber of the body, the body will force the clamping area of ​​the outer claw to produce a radial inward position change. At the same time, the inner claw and the outer claw move towards the valve plug, thereby forming a double-layer clamping effect, clamping the clamping hole of the valve plug, so that the inserted air nozzle can form a good airtight effect.

[0013] Preferably, each of the inner claw portions has a spacer bar protruding axially on the outer side of each of the claws, and the claw plates of each of the outer claw portions are disposed between the spacer bars.

[0014] Preferably, the thickness of the spacer is approximately equivalent to that of the claws; when the inner claw moves toward the air chamber of the body, the body causes the spacer to undergo a radially inward positional change.

[0015] Preferably, each of the inner claws has an inner locking portion radially inward at the end of the claw. When the claws change radially inward, the inner locking portions converge toward the axis of the clamping hole of each valve plug, so that the inner locking portions can be locked and fixed to the air nozzle in the clamping hole during inflation.

[0016] Preferably, each of the claws of the outer claw portion has an outer locking portion radially inward at one end of the clamping area. When the claws change radially inward, the outer locking portions will converge towards the axis of the clamping hole of each valve plug, so that the outer locking portions can be locked and fixed to the air nozzle in the clamping hole during inflation.

[0017] Preferably, each of the outer claw portions has a set of connecting portions radially inward at its end near the connecting seat; the connecting seat has a set of connecting grooves on its circumferential side near each of the joints, and the connecting portions of the claw portions overlap within the connecting grooves.

[0018] Preferably, the outer side of the claw further includes a stop area and a recessed area; the recessed area is disposed between the stop area and the clamping area, and the radial thickness of the recessed area is at its thinnest position.

[0019] Preferably, the tight zone is an upward arc surface.

[0020] Preferably, the body has a ring abutment on at least one side of the air chamber, which contacts the outer circumference of the clamping unit.

[0021] Preferably, each of the joints has a protrusion on its end face and each valve plug has a groove; each groove is embedded in the protrusion.

[0022] Preferably, the hardness of the outer claw portion is greater than the hardness of the inner claw portion.

[0023] The invention relates to a double-layer gripper inflation structure. When each valve plug is connected to an air nozzle and pushed into the air chamber of the main body, the clamping area of ​​the outer gripper's claws approaches the main body and forms a radially inward positional change. This allows the outer and inner grippers to simultaneously clamp the valve plug, resulting in a good squeezing and clamping effect on the valve plug and its central clamping hole. This also allows the air nozzle located in the clamping hole to be tightly clamped, producing a good airtight effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the inflation nozzle according to a preferred embodiment of the present invention.

[0026] Figure 2 This is an exploded perspective view of the inflation nozzle according to a preferred embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional view along line 3-3 of the inflation nozzle of a preferred embodiment of the present invention.

[0028] Figure 4This is a top view of an inflation nozzle according to a preferred embodiment of the present invention, showing the first clamping unit in an un-clamped state.

[0029] Figure 5 This is a schematic diagram showing the inflation connector of a preferred embodiment of the present invention connected to an American-style air valve, without being pushed in or pulled out.

[0030] Figure 6 This is a schematic diagram of the push-in and fixed state of the inflation connector connected to the American-style air valve in a preferred embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram showing the air inflator connected to the French valve in a preferred embodiment of the present invention, without being pushed in or pulled out.

[0032] Figure 8 This is a schematic diagram of the push-in and fixed state of the air inflator connected to the French air nozzle according to a preferred embodiment of the present invention.

[0033] Among them, 10 is the body; 11 is the air chamber; 12 is the air intake channel; 13 is the first cover; 131 is the first ring abutment; 14 is the second cover; 141 is the second ring abutment; 20 is the connecting seat; 21 is the first joint; 211 is the first protrusion; 22 is the second joint; 221 is the second protrusion; 25 is the first set of grooves; 26 is the second set of grooves; 30 is the first valve plug; 31 is the first clamping hole; 32 is the first groove; 40 is the second valve plug; 41 is the second clamping hole; 42 is the second groove; 5 is the first clamping unit; 50 is the first inner claw; 51 is the first chamber; 52 is the long groove; 53 is the first gripper; 531 is the first clamping claw; 532 First inner clamping part; 60 First outer claw part; 61 First claw piece; 611 First clamping area; 612 First recessed area; 613 First stop area; 614 First outer clamping part; 615 First connecting part; 7 Second clamping unit; 70 Second inner claw part; 71 Second chamber; 72 Long groove; 73 Second gripper; 731 Second inner clamping part; 732 Second spacer; 80 Second outer claw part; 81 Second claw piece; 811 Second clamping area; 812 Second recessed area; 813 Second stop area; 814 Second outer clamping part; 815 Second connecting part. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1 to 4 As shown, the present invention provides an inflation nozzle, which includes:

[0036] A body 10 is formed into a T-shaped structure, with an air chamber 11 extending through one side. An air inlet channel 12 is provided on the side of the air chamber 11, and the air inlet channel 12 is provided with an air inlet hole 121 that communicates with the air chamber 11. A first cover 13 and a second cover 14 are screwed onto the two ends of the air chamber 11, respectively. A first ring abutment 131 and a second ring abutment 141 are respectively protruding on the first cover 13 and the second cover 14.

[0037] A connecting seat 20 is slidably disposed within the air chamber 11 and is axially displaceable within the air chamber 11. The connecting seat 20 is provided with a first connecting port 21, a second connecting port 22, a first air guide port 23, and a second air guide port 24. The first air guide port 23 and the second air guide port 24 are spaced apart on the side of the connecting seat 20 and are not interconnected. When the connecting seat 20 slides within the air chamber 11, the air intake channel 12 can selectively connect to either the first air guide port 23 or the second air guide port 24. The first air guide port 23 is connected to the first connecting port 21, and the second air guide port 24 is connected to the second connecting port 22. A first protrusion 211 is provided at the end of the first connecting port 21. 1 is a specification applicable to American-style air valves. The end of the second joint 22 is also provided with a second protrusion 221. The second joint 22 is a specification applicable to French-style air valves. Therefore, when the connecting seat 20 is pushed to the position to connect the first air guide port 23 with the air intake channel 12, the first joint 21 can be used to inflate an American-style air valve. When the connecting seat 20 is pushed to the position to connect the second air guide port 24 with the air intake channel 12, the second joint 22 can be used to inflate a French-style air valve. However, the present invention is not limited to the use of American or French air valves. The connecting seat 20 is provided with several first sets of grooves 25 and second sets of grooves 26 at intervals on the sides of the first joint 21 and the second joint 22.

[0038] A first valve plug 30 is made of a compressible soft material. A first clamping hole 31 is provided in the center of the first valve plug 30. A first groove 32 is recessed on one side of the first clamping hole 31 and is connected to the first protrusion 211 of the first joint 21. The first clamping hole 31 is connected to the first joint 21. In this embodiment, the first clamping hole 31 is set to a diameter that conforms to that of an American-style air nozzle.

[0039] A second valve plug 40 is made of a compressible soft material. A second tightening hole 41 is provided in the center of the second valve plug 40. A second groove 42 is recessed on one side of the second tightening hole 41 and is connected to the second protrusion 221 of the second joint 22. The second tightening hole 41 is connected to the second joint 22. In this embodiment, the second tightening hole 41 is set to a diameter that conforms to that of a French nozzle. In order to increase the sealing effect, an annular protrusion 411 is also provided in the second tightening hole 41.

[0040] A first clamping unit 5 is composed of a first inner claw portion 50 and a first outer claw portion 60. The first clamping unit 5 is disposed between the air chamber 11 of the body 10 and the first valve plug 30, and its radial position can be changed with the position of the connecting seat 20. The strength of the first outer claw portion 60 is greater than that of the first inner claw portion 50. The first outer claw portion 60 can be made of metal, while the first inner claw portion 50 can be made of plastic. The strength of the first outer claw portion 60 can reduce the amount of deformation and force the first inner claw portion 50 to produce a larger deformation effect after being pressed.

[0041] The first inner claw portion 50 has a first chamber 51 in the center for the first valve plug 30 to be forced in and fixed, so that the first valve plug 30 can be installed between the connecting seat 20 and the first inner claw portion 50. Several elongated grooves 52 are provided axially at the end away from the connecting seat 20; a first clamping claw 53 is formed between each of the elongated grooves 52; the first clamping claws 53 can be subjected to force to produce a radial position change, thereby squeezing the first valve plug 30 and the first clamping hole 31, so that the first valve plug 30, especially the first clamping hole 31, can form a squeezing effect concentrated towards the axis; the ends of the first clamping claws 53 extend axially inward to form a first inner locking portion 531, which is located on the outside of the first valve plug 30 and changes radial position with the first clamping claws 53. When the first clamping claws 53 are squeezed and move radially inward... The first inner clamping portions 531 will also undergo a radially inward position change, causing the first inner clamping portions 531 to move towards the axial position of the first clamping hole 31. Because the first inner clamping portions 531 are located at the ends of the first grippers 53, the radial change distance is the largest, so that the first inner clamping portions 531 do not penetrate into the interior of the first clamping hole 31 when they are in their original position, but move into the first clamping hole 31 when they deform radially. A first spacer 532 is respectively provided on the outer center of the first grippers 53 along the axial direction. The first spacer 532 will contact the first ring abutment portion 131 of the body 10. When the relative position of the first clamping unit 5 on the body 10 changes, the first spacer 532 will drive the first grippers 53 to undergo a radial position change as the position changes.

[0042] The first outer claw portion 60 is composed of a number of first claw plates 61, which are spaced apart on the outer periphery of the first inner claw portion 50, that is, between the first spacer bars 532. The thickness of the first claw plates 61 is approximately equal to the thickness of the first spacer bars 532, so that the first ring abutment portion 131 can simultaneously contact the first spacer bars 532 and the first claw plates 61. A first clamping area 611 is sequentially provided on the outer surface of each of the first claw plates 61. The first clamping unit 5 has a first recessed area 612 and a first stopping area 613. The first clamping area 611 is a gradually rising arc surface disposed on one side of the first recessed area 612. The first stopping area 613 is disposed in the air chamber 11 of the body 10 and is stopped by the first ring abutment 131. The first recessed area 612 is disposed between the first clamping area 611 and the first stopping area 613. The first recessed area 612 is the position with the thinnest radial thickness of the entire first clamping unit 5.

[0043] When the first recessed area 612 of the first clamping unit 5 is located at the position of the first ring abutment 131, the first clamping unit 5 will not apply force to the first valve plug 30. When the first clamping unit 5 moves into the body 10, the first ring abutment 131 will press the first clamping area 611 and the first spacer 532, causing the first claw 53 of the first inner claw 50 and the first claw piece 61 of the first outer claw 60 to move radially inward. The first claw piece 61 and the first spacer 532 will push the first claw 53 to move radially inward and squeeze the first valve plug 30 and the first clamping hole 31, so that the first valve plug 30 can be fully clamped and squeezed to form a good airtight effect.

[0044] Each of the first claw plates 61 has a first outer locking portion 614 radially inwardly disposed at its end near the first clamping area 611. The first outer locking portion 614 is disposed outside the first inner locking portion 531 and will move radially with the first claw plates 61. When the first recessed area 612 of the first claw plates 61 is located at the first annular abutment portion 131 of the first cover 13, the first outer locking portion 614 will not protrude into the first clamping hole 31; when the first clamping area 611 and the first inner locking portion 531 are in contact with the first inner locking portion 531, the first outer locking portion 614 will not protrude into the first clamping hole 31. When the first ring abutment 131 of the first cover 13 abuts against each other, the first outer locking part 614 will also generate a radial displacement towards the center, so that the first outer locking part 614 protrudes into the first clamping hole 31; in addition, the first claw pieces 61 are provided with a first set of connecting parts 615 radially inward near the end of the first stop area 613. The first set of connecting parts 615 are locked into the first set of connecting grooves 25 of the connecting seat 20, so that the first claw pieces 61 can be engaged with the connecting seat 20 and can move freely.

[0045] The second clamping unit 7 is composed of a second inner claw portion 70 and a second outer claw portion 80. The second clamping unit 7 is disposed between the air chamber 11 of the body 10 and the second valve plug 40, and its radial position can be changed with the position of the connecting seat 20. The strength of the second outer claw portion 80 is greater than that of the second inner claw portion 70. The second outer claw portion 80 can be made of metal, while the second inner claw portion 70 can be made of plastic. The strength of the second outer claw portion 80 can reduce the amount of deformation and force the second inner claw portion 70 to produce a larger deformation effect after being pressed.

[0046] The second inner claw portion 70 has a second chamber 71 in the center for the second valve plug 40 to be forced in and fixed, so that the second valve plug 40 can be installed between the connecting seat 20 and the second inner claw portion 70. Several elongated grooves 72 are provided axially at the end away from the connecting seat 20; a second clamping claw 73 is formed between each of the elongated grooves 72; the second clamping claws 73 can be subjected to force to produce a radial position change, thereby squeezing the second valve plug 40 and the second clamping hole 41, so that the second valve plug 30, especially the position of the second clamping hole 41, can form a squeezing effect concentrated towards the axis; the ends of the second clamping claws 73 extend axially inward to form a second inner locking portion 731, which is located on the outside of the second valve plug 40 and changes radial position with the second clamping claws 73. When the second clamping claws 73 are squeezed and move radially inward... The second inner clamping portions 731 will also undergo a radially inward position change, causing the second inner clamping portions 731 to move towards the axial position of the second clamping hole 41. Because the second inner clamping portions 731 are located at the ends of the second grippers 73, the radial change distance is the largest, so that the second inner clamping portions 731 do not penetrate into the interior of the second clamping hole 41 when they are in their original position, but move into the interior of the second clamping hole 41 when they deform radially. A second spacer 732 is respectively provided on the outer center of the second grippers 73 along the axial direction. The second spacer 732 will contact the second ring abutment portion 141 of the body 10, and when the relative position of the second clamping unit 7 on the body 10 changes, the second spacer 732 will drive the second grippers 73 to undergo a radial position change as the position changes.

[0047] The second outer claw portion 80 is composed of a number of second claw pieces 81. These second claw pieces 81 are spaced apart on the outer periphery of the second inner claw portion 70, that is, between the second spacer strips 732. The thickness of the second claw pieces 81 is approximately equal to the thickness of the second spacer strips 732, so that the second annular abutment portion 141 can simultaneously contact the second spacer strips 732 and the second claw pieces 81. A second clamping area 811 is sequentially provided on the outer surface of each of the second claw pieces 81. The second clamping area 811 is a gradually rising arc surface disposed on one side of the second clamping area 812. The second stop area 813 is disposed in the air chamber 11 of the body 10 and is stopped by the second ring abutment 141. The second clamping area 812 is disposed between the second clamping area 811 and the second stop area 813. The second clamping area 812 is the position with the thinnest radial thickness of the second clamping unit 7.

[0048] When the second recessed area 812 of the second clamping unit 7 is located at the position of the second ring abutment 141, the second clamping unit 7 will not apply force to the second valve plug 40. When the second clamping unit 7 moves into the body 10, the second ring abutment 141 will press the second clamping area 811 and the second spacer 732, causing the second claw 73 of the second inner claw 70 and the second claw piece 81 of the second outer claw 80 to move radially inward. The second claw piece 81 and the second spacer 732 will push the second claw 73 to move radially inward and squeeze the second valve plug 40 and the second clamping hole 41, so that the second valve plug 40 can be fully clamped and squeezed to form a good airtight effect.

[0049] The second claws 81 are provided with a second outer locking portion 814 radially inward at their ends near the second clamping area 811. The second outer locking portion 814 is located outside the second inner locking portion 731 and will also move radially with the second claws 81. When the second recessed area 812 of the second claws 81 is located at the second annular abutment portion 141 of the second cover 14, the second outer locking portion 814 will not protrude into the second clamping hole 41; when the second clamping area 811 and the second inner locking portion 731 are in contact with the second inner locking portion 731, the second outer locking portion 814 will not protrude into the second clamping hole 41. When the second ring abutment 141 of the second cover 14 abuts against each other, the second outer locking part 814 will also generate a radial displacement towards the center, so that the second outer locking part 814 protrudes into the second clamping hole 41; in addition, the second claw pieces 81 are provided with a second set of connecting parts 815 radially inward near the end of the second stop area 813. The second set of connecting parts 815 are engaged in the second set of connecting grooves 26 of the connecting seat 20, so that the second claw pieces 81 can be engaged on the connecting seat 20 and can move freely.

[0050] Please see Figure 5 and6As shown, when a user wants to inflate an air valve, they first match the appropriate valve plug according to the required nozzle. If an American-style nozzle is used, the first valve plug 30 is used. The end of the American-style nozzle is inserted into the first clamping hole 31 of the first valve plug 30. At this time, the first clamping unit 5 is positioned with the first recessed area 612 at the first ring abutment 131. The first valve plug 30 and the first clamping hole 31 are not compressed. The American-style nozzle can be inserted into the first clamping hole 31 and pushed towards the air chamber 11. When the American-style nozzle contacts the first engagement port 21 of the connecting seat 20, the American-style nozzle is ready to be filled with air. When the American-style nozzle pushes the connecting seat 20, the first clamping unit 5 is engaged. Unit 5 can enter the air chamber 11 of the body 10, while the second clamping unit 7 will be pushed in the direction away from the air chamber 11. When the first clamping unit 5 enters the air chamber 11, the position where the first claws 61 of the first outer claw 60 contact the first ring abutment 131 will gradually shift from the first recessed area 612 to the first pressing area 611. Because the first pressing area 611 presents an upward arc, when the first ring abutment 131 contacts the first pressing area 611, the first ring abutment 131 will drive the first claws 61 and the first spacer 532 to move radially inward, so that the first grippers 53 of the first inner claw 50 will be subjected to the first claws 61 and the first spacer 532. The first spacer 532 gradually moves radially inward, causing the first clamping jaws 53 to gradually shrink the first chamber 51. Simultaneously, the first valve plug 30 within the first chamber 51 is compressed, causing the first clamping hole 31 to be compressed as well. This compression forces the American-style air nozzle inserted into the first clamping hole 31 to fit tightly against it, resulting in a tight seal around the nozzle and a good airtight effect. Furthermore, because the first clamping area 611 is a rising arc surface, the further the first clamping unit 5 moves into the air chamber 11, the greater the radial displacement distance between the first outer jaw 60 and the first inner jaw 50. The squeezing effect of the first valve plug 30 will also increase, as will the airtightness. When the first clamping unit 5 is pushed to the thickest position (highest point of the arc surface) of the first clamping area 611 or to the position where the second stop area 813 of the second clamping unit 7 contacts the second ring abutment 141, the first clamping unit 5 can no longer be pushed. At this time, the airtightness of the first valve plug 30 is optimal. At the same time, when the first jaws 53 of the first inner jaw 50 and the first jaw pieces 61 of the first outer jaw 60 are radially displaced, the first inner locking portions 531 and the first outer locking portions 614 at their ends will move closer to the first clamping hole 31 and will be locked into the outer circumference of the American-style air nozzle, increasing the overall holding effect.At this time, the gas in the air intake channel 12 will enter the air chamber 11 through the air intake hole 121 and be delivered to the first joint 21 position by the first air guide port 23, so that the gas can be filled into the American-style air nozzle. After inflation is completed, the second clamping unit 7 can push the connecting seat 20 to move towards the first clamping unit 5. At this time, the first clamping areas 611 will gradually move away from the first ring abutment 131, that is, the contact position of the first clamping areas 611 will gradually move towards the lower position of the arc surface, so that the first claws 61 and the first clamping claws 53 of the first outer claw 60 will form a radially outward displacement action. In this way, the first The first chamber 51 within the inner claw portion 50 gradually expands, releasing the first valve plug 30 located within it. This prevents the first clamping hole 31 from compressing the American-style air nozzle. Simultaneously, as the first grippers 53 and first claw plates 61 move radially outward, the first inner clamping portions 531 and first outer clamping portions 614 also move radially outward and no longer hold the American-style air nozzle, allowing it to be pulled out. When the first stop areas 613 stop inside the first ring abutment portion 131, the user cannot pull further outward, creating a fixed point effect. The user can confirm that the end has been reached and will not push any further.

[0051] Please see Figure 7 and 8As shown, when the user wants to perform French inflator operation, it is used in conjunction with the second valve plug 40. The end of the French nozzle is inserted into the second clamping hole 41 of the second valve plug 40. At this time, the second clamping unit 7 is positioned with the second recessed area 812 at the position of the second annular abutment 141. The second valve plug 40 and the second clamping hole 41 are not squeezed. The French nozzle can be inserted into the second clamping hole 41 and pushed towards the air chamber 11. When the French nozzle contacts the second engagement port 22 of the connecting seat 20, the French nozzle is ready to be filled with air. At the same time, the annular protrusion 411 of the second valve plug 40 can be ringed onto the recess of the French nozzle to form an airtight fixation. When the French nozzle pushes the connecting seat 20, the second valve plug 40 is used to inflate the air chamber 11. The clamping unit 7 can enter the air chamber 11 of the body 10, while the first clamping unit 5 will be pushed away from the air chamber 11. When the second clamping unit 7 enters the air chamber 11, the contact position between the second claws 81 of the second outer claw portion 80 and the second ring abutment 141 will gradually shift from the second recessed area 812 to the second pressing area 811. Because the second pressing area 811 presents an upward arc, when the second ring abutment 141 contacts the second pressing area 811, the second ring abutment 141 will drive the second claws 81 and the second spacers 732 to move radially inward, so that the second claws 73 of the second inner claw portion 70 will be subjected to the second claws 81 and the second spacers 732. Due to the action of the spacer 732, the second clamping unit 73 gradually moves radially inward. This radial displacement of the second clamping jaws 73 causes the second chamber 71 to gradually shrink. Simultaneously, the second valve plug 40 located within the second chamber 71 is also compressed, causing compression of the second clamping hole 41 and its internal annular protrusion 411. As a result, the French nozzle inserted into the second clamping hole 41 is also compressed, forming a tight seal with the second clamping hole 31 and the annular protrusion 411. This ensures a tight seal around the French nozzle, producing a good airtight effect. Furthermore, because the second clamping area 811 is a rising arc surface, as the second clamping unit 7 moves further into the air chamber 11, the radial displacement distance between the second outer jaw 80 and the second inner jaw 70 increases. The larger the pressure, the greater the squeezing effect on the second valve plug 40 and the greater the airtightness. When the second clamping unit 7 is pushed to the thickest position (highest point of the arc surface) of the second clamping area 811 or to the position where the first stop area 613 of the first clamping unit 5 contacts the first ring abutment 131, the second clamping unit 7 can no longer be pushed. At this time, the airtightness of the second valve plug 40 is optimal. At the same time, when the second claws 73 of the second inner claw 70 and the first claw piece 81 of the second outer claw 80 are radially displaced, the second inner locking parts 731 and the second outer locking parts 814 at their ends will move closer to the second clamping hole 41 and will be locked into the outer circumference of the French nozzle, increasing the overall holding effect.At this time, the gas in the air intake channel 12 will enter the air chamber 11 through the air intake hole 121 and be transmitted to the second joint 22 position through the second air guide port 24, so that the gas can be filled into the French nozzle. After inflation is completed, the first clamping unit 5 can push the connecting seat 20 to move towards the second clamping unit 7. At this time, the second clamping areas 811 will gradually move away from the second ring abutment 141, that is, the contact position of the second clamping areas 811 will gradually move towards the lower position of the arc surface, so that the second claws 81 and the second clamping claws 73 of the second outer claws 80 will form a radially outward displacement action. In this way, the second The second chamber 71 within the inner claw portion 70 gradually expands, releasing the second valve plug 40 located within it. This prevents the second clamping hole 41 from compressing the French nozzle. Simultaneously, as the second grippers 73 and second claw plates 81 move radially outward, the second inner clamping portions 731 and second outer clamping portions 814 also move radially outward and no longer hold the French nozzle in place. The French nozzle can then be pulled out. When the second stop regions 813 stop inside the second ring abutment portion 141, the user cannot pull further outward, creating a fixed point effect. The user can confirm that the end has been reached and will not continue pushing.

[0052] The above embodiments are applicable to dual-nozzle inflation nozzles. The present invention can also be applied to single-nozzle inflation nozzles, with the structure as applied for and approved by the applicant in I560384, which has two different structures: single-nozzle or dual-nozzle. The present invention can also be applied to single-nozzle inflation with the same structure.

[0053] The air inlet valve with double-layer clamping jaws provided by this invention can form a double clamping effect through the inner and outer jaws of the clamping unit. Compared with the existing single jaws which have insufficient force and result in poor airtightness, the clamping unit of this invention can increase the clamping force and the full-circumference clamping effect through the inner and outer jaws. This allows the valve plug to be more tightly and evenly pressed against the air nozzle set in the clamping hole, thus forming a good airtight effect. Furthermore, the double clamping effect can reduce the amount of force applied, allowing the user to produce a better airtight effect with less operating force.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inflation nozzle with double-layer grippers, characterized in that, Includes: A body has a chamber, and an air inlet channel is provided on the side of the body and connected to the chamber. A connecting seat is slidably disposed in the air chamber and is axially displaced within the air chamber; the connecting seat is provided with at least one engagement port and at least one air guide port; each air guide port is selectively connected to the air inlet channel, and each air guide port is connected to each engagement port. At least one valve plug is connected to each of the joints, and each valve plug is provided with a clamping hole, and each clamping hole is connected to each of the joints; At least one clamping unit is composed of an inner claw portion and an outer claw portion; Each inner claw portion has a chamber for the valve plug to be forced in and fixed. One end of each inner claw portion is close to the connecting seat, and the other end away from the connecting seat is provided with several long grooves along the axial direction. A clamping claw is formed between the long grooves. When the clamping claw is subjected to force, it produces a radial position change and squeezes the valve plug and the clamping hole. Each of the outer claw portions is composed of several claw plates, which are spaced apart on the outer periphery of the inner claw portion; each of the claw plates of the outer claw portion has a clamping area at one end; when the outer claw portion moves toward the air chamber of the body, the body causes the clamping area to undergo a radially inward positional change, so that the clamping area presses against the gripper of the inner claw portion and the clamping hole of the valve plug.

2. The inflation nozzle according to claim 1, characterized in that, Each inner claw portion has a spacer bar protruding axially on the outer side of the gripper, and each outer claw portion has a claw piece disposed between the spacer bar.

3. The inflation nozzle according to claim 2, characterized in that, The thickness of the spacer between the claws of each inner claw portion is equivalent to that of the claw piece of the outer claw portion; when the inner claw portion moves toward the air chamber of the body, the body causes the spacer to undergo a radially inward positional change.

4. The inflation nozzle according to claim 1, characterized in that, Each inner claw has an inner locking part radially inward at the end of its gripper. When the gripper changes radially inward, the inner locking part will converge toward the axis of the clamping hole of each valve plug.

5. The inflation nozzle according to claim 1, characterized in that, Each of the outer claw portions has an outer locking portion radially inwardly disposed at one end of the clamping area. When the claw portion changes radially inward, the outer locking portion will concentrate towards the axis of the clamping hole of each valve plug.

6. The inflation nozzle according to claim 1, characterized in that, Each of the outer claw portions has a set of connecting portions radially inward at the end near the connecting seat; the connecting seat has a set of connecting grooves on the circumferential side near each of the joints, and the connecting portions of the claw portions overlap in the connecting grooves.

7. The inflation nozzle according to claim 1, characterized in that, The outer side of the claw plate includes a stop area and a recessed area; the recessed area is located between the stop area and the clamping area, and the radial thickness of the recessed area is at its thinnest position.

8. The inflation nozzle according to claim 1 or 6, characterized in that, The tight zone is an upward-curving surface.

9. The inflation nozzle according to claim 1, characterized in that, The main body has a ring abutment on at least one side of the air chamber, which contacts the outer circumference of the clamping unit.

10. The inflation nozzle according to claim 1, characterized in that, Each of the joints has a protrusion on its end face and a groove on its valve plug; each groove is embedded in the protrusion.

11. The inflation nozzle according to claim 1, characterized in that, The hardness of the outer claw is greater than that of the inner claw.

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