Restraint buckle for inflating nozzle of inner tube

Abstract

The utility model discloses an inner tube inflating nozzle restraint buckle which comprises an inflating nozzle restraint buckle body, the inflating nozzle restraint buckle body comprises a first clamping piece and a second clamping piece which are spliced with each other, the sides, close to each other, of the first clamping piece and the second clamping piece are provided with a first holding groove and a second holding groove respectively, and the first clamping piece and the second clamping piece are clamped in the first holding groove and the second holding groove respectively in the spliced state. The first embracing groove and the second embracing groove are spliced to form the air tap restraining channel, the air tap is effectively restrained, and meanwhile the performance of being easy to disassemble and assemble is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of hub motors. Background Art

[0002] The inner tubes of the hub motors of two-wheeled electric vehicles, unicycles, etc. will crack and wear after running for a certain period of time, and need to be designed to be easy to disassemble. The air nozzle of the inner tube needs to be constrained in the assembled state, otherwise when the inner tube is deflated, the air nozzle will easily retract into the inner cavity of the outer tube, making it inconvenient to inflate. The traditional air nozzle constraint structure requires the hub side cover to be disassembled at the same time as the air nozzle constraint structure. Due to the lack of tools and professionalism of consumers, installation errors may occur when disassembling the side cover. Therefore, it is necessary to design a structure that can realize the disassembly of the inner tube without disassembling the hub side cover. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides an inner tube air nozzle restraint buckle, which effectively restrains the air nozzle while achieving easy disassembly and assembly performance.

[0004] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides an inner tube air nozzle restraint buckle, including an air nozzle restraint buckle, the air nozzle restraint buckle includes a first clamping member and a second clamping member spliced ​​together, and the first clamping member and the second clamping member are respectively provided with a first holding groove and a second holding groove on the side close to each other. When the first clamping member and the second clamping member are in the spliced ​​state, the first holding groove and the second holding groove form an air nozzle restraint channel.

[0005] Furthermore, it also includes a hub motor end cover, the outer ring of the hub motor end cover is integrally provided with a ring body, and a part of the ring body is provided with a gap for protruding an air nozzle; the cylindrical air nozzle of the inner tube passes through the gap for protruding an air nozzle and is exposed to the outside; the air nozzle restraint buckle is at the gap for protruding an air nozzle, and the air nozzle restraint buckle holds the cylindrical air nozzle tightly.

[0006] Furthermore, the outer contour of the air nozzle restraining buckle formed by splicing the first clamping member and the second clamping member is adapted to the inner contour of the notch through which the air nozzle protrudes.

[0007] Furthermore, the air nozzle protrusion notch is a U-shaped inner contour with an opening groove away from the side of the ring body, and a contour step groove is provided along the U-shaped inner contour on the side of the air nozzle protrusion notch close to the outer surface of the ring body; the outer end of the second clamp is integrally provided with a U-shaped limit platform, and in the assembled state, the U-shaped limit platform is stuck in the contour step groove along the contour.

[0008] Furthermore, snap grooves are symmetrically arranged on both sides of the first clamp, and the length directions of the two snap grooves extend along the axis direction of the air nozzle constraint channel; snap strips that can undergo elastic deformation are arranged in the two snap grooves along the length direction, and the sides where the bottom ends of the two snap strips are close to each other are fixedly connected to the two sides of the bottom end of the first clamp through fixed arms.

[0009] Furthermore, a hook block is integrally provided on the side of the waist of the two buckle strips away from each other, the side of the hook block close to the bottom end of the first clamp is a hook inclined surface, and the side away from the bottom end of the first clamp is a limiting plane; in the assembled state, the two limiting planes of the two hook blocks limit the contact with the inner side surface of the ring body.

[0010] Furthermore, the side surfaces of the first clamping member and the second clamping member that are close to each other are respectively recorded as a joint surface a and a joint surface b; a pair of blade insertion openings are provided on the joint surface a, and a pair of blades are vertically fixedly provided on the joint surface b; the blades of the blades are non-sharp and blunt blades; the extension lines of the blades of the blades form an acute angle with the joint surface b, so that the ends of the blades close to the bottom end of the second clamping member are acute-angled pointed ends; in the assembled state, the two blades are just inserted into the two blade insertion openings.

[0011] Beneficial effect: The utility model can effectively constrain the air nozzle while achieving easy disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Disassembly diagram of this device;

[0013] Figure 2 Partial drawing in assembly state;

[0014] Figure 3 Overall structure diagram of the hub motor. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] As attached Figures 1 to 3 The inner tube air nozzle restraint buckle shown is as follows Figure 3 As shown, it includes a coaxial stator shaft 8, two hub motor end covers 7, a wheel rim 5, an inner tube 2 and an outer tube 1; the outer rings of the two hub motor end covers 7 are fixed and locked on both sides of the wheel rim 5 by flange bolts, and the inner rings of the two hub motor end covers 7 are rotatably matched with the stator shaft 8 through bearings; a stator winding is coaxially fixedly installed on one end of the stator shaft 8 between the two hub motor end covers 7; a permanent magnet rotor 33 is fixedly installed on the inner ring of the wheel rim 5; the outer tube 1 is coaxially installed on the outer ring of the wheel rim 5, and the inner tube 2 is coaxially inside the outer tube 1.

[0017] The outer ring of the hub motor end cover 7 is integrally provided with a ring body 4, and a part of the ring body 4 of one of the two hub motor end covers 7 is provided with an air nozzle protruding notch 9; an air nozzle through hole 27 is hollowed out on the wall of the wheel rim 5 on the side close to the air nozzle protruding notch 9; the cylindrical air nozzle 6 of the inner tube 2 passes through the air nozzle through hole 27 and the air nozzle protruding notch 9 in turn and is exposed to the outside; an air nozzle restraint buckle 10 is installed at the air nozzle protruding notch 9, and the air nozzle restraint buckle 10 holds the waist of the cylindrical air nozzle 6; in order to facilitate the installation and removal of the cylindrical air nozzle 6, the inner diameter of the air nozzle through hole 27 is larger than the outer diameter of the cylindrical air nozzle 6.

[0018] The air nozzle restraint buckle 10 includes a first clamping member 11 and a second clamping member 12 that are spliced ​​together. The first clamping member 11 and the second clamping member 12 are respectively provided with a first clamping groove 18a and a second clamping groove 18b on the side close to each other. When the first clamping member 11 and the second clamping member 12 are in the spliced ​​state, the first clamping groove 18a and the second clamping groove 18b form the air nozzle restraint channel 18.

[0019] The outer contour of the air nozzle restraint buckle 10 spliced ​​by the first clamp 11 and the second clamp 12 is adapted to the inner contour of the air nozzle protrusion notch 9; the air nozzle protrusion notch 9 is a U-shaped inner contour with the opening groove away from the side of the ring body 4, and a contour step groove 9a is provided along the U-shaped inner contour on the side of the air nozzle protrusion notch 9 close to the outer surface of the ring body 4; the outer end of the second clamp 12 is integrally provided with a U-shaped limit platform 51, and in the assembled state, the U-shaped limit platform 51 is stuck in the contour step groove 9a along the contour.

[0020] Snap grooves 14 are symmetrically provided on both sides of the first clamping member 11, and the length directions of the two snap grooves 14 extend along the axial direction of the air nozzle constraint channel 18; snap strips 16 that can undergo elastic deformation are provided in the two snap grooves 14 along the length direction, and the sides where the bottom ends of the two snap strips 16 are close to each other are fixedly connected to the two sides of the bottom end of the first clamping member 11 through fixed arms 16a; the waists of the two snap strips 16 are away from each other on the sides where the waists are away from each other. A hook block 17 is integrally provided, and the side of the hook block 17 close to the bottom end of the first clamping member 11 is a hook inclined surface 17a, and the side away from the bottom end of the first clamping member 11 is a limiting plane 17b; the ends of the two snap strips 16 away from the bottom end of the first clamping member 11 are provided with a tool slot 41, and the two pointed tips of the clamping end of the needle-nosed pliers can be respectively inserted into the two tool slots 41 at the ends of the two snap strips 16.

[0021] When the first clamping member 11 passes through the air nozzle protrusion notch 9 from the outside to the inside, the inner contours on both sides of the air nozzle protrusion notch 9 of the U-shaped wheel press the hook inclined surfaces 17a of the two hook blocks 17, forcing the two buckle strips 16 to bend elastically toward the side close to each other; in the assembled state, the two limiting planes 17b of the two hook blocks 17 limit contact with the inner side surface of the ring body 4.

[0022] The side surfaces of the first clamp 11 and the second clamp 12 that are close to each other are respectively marked as a joint surface 19 and b joint surface 20; a pair of inserting openings 23 of the inserting knife are provided on the joint surface 19, and a pair of inserting knives 21 are fixed vertically on the joint surface 20; the blades 21a of the inserting knives 21 are blunt blades; the extension line of the blade 21a of the inserting knife 21 forms an acute angle with the joint surface 20 b, so that the end of the inserting knife 21 close to the bottom end of the second clamp 12 is an acute angle tip end 21b; in the assembled state, the two inserting knives 21 are just inserted into the two inserting knife insertion openings 23; when the first clamp 11 is assembled, at the initial stage of inserting the second clamp 12, the inserting knives on the second clamp 12 The acute-angled tip end 21b of the blade 21a of 21 first contacts the mating surface a 19 on the first clamp 11. As the second clamp 12 advances, the inserter 21 gradually wedges between the first clamp 11 and the second clamp 12, so that the first clamp 11 and the second clamp 12 tend to move away from each other under the thrust of the inserter 21, and the second clamp 12 and the second clamp 12 adaptively elastically deform, thereby expanding the gap between the first clamping groove 18a and the second clamping groove 18b, thereby reducing the friction thrust of the second clamping groove 18b on the side wall of the cylindrical air nozzle 6 during the insertion of the second clamp 12, thereby preventing the cylindrical air nozzle 6 from retracting from the air nozzle through hole 27 into the inner side of the rim 5 during the insertion of the second clamp 12.

[0023] After the second clamping member 12 is fully inserted, the two blades 21 are just inserted into the two blade insertion openings 23, the two blades 21 are released from the wedged state, the shapes of the second clamping member 12 and the second clamping member 12 are restored, and the first holding groove 18a and the second holding groove 18b tightly hold the waist of the cylindrical air nozzle 6.

[0024] The first clamping member 11 and the second clamping member 12 are both made of elastically deformable materials; the main body material is relatively hard rubber, etc.; the buckle strip 16, the fixed arm 16a and the hook block 17 are all made of high-toughness plastic material in an integrated manner, and the inserting blade 21 is made of hard plastic material.

[0025] Working principle:

[0026] Before removing the inner tube, it is necessary to remove the air nozzle restraining buckle 10 separately first, and use the two clamp ends of the needle-nosed pliers to insert the tool clamping grooves 41 on the two clamping strips 16 on both sides of the first clamping part 11, and then hold the handle of the needle-nosed pliers firmly so that the two clamp ends of the needle-nosed pliers force the two clamping strips 16 to bend elastically toward each other, so that the two hook blocks 17 are close to each other until they are separated from the inner side of the ring body 4, thereby releasing the clamping state of the first clamping part 11. At this time, use needle-nosed pliers to forcibly pull out the first clamping part 11; then pull out the second clamping part 12 outward, thereby achieving the purpose of removing the air nozzle restraining buckle 10 from the notch 9 where the air nozzle protrudes; then remove the inner tube 2 according to the conventional method.

[0027] When the new inner tube 2 is installed, the cylindrical air nozzle 6 of the inner tube 2 passes through the air nozzle through hole 27 and the air nozzle protrusion notch 9 in sequence and is exposed to the outside. At this time, the air nozzle restraining buckle 10 needs to be installed. The process of installing the air nozzle restraining buckle 10 is as follows:

[0028] First, the gas nozzle corresponding to the first clamp 11 is protruded from the notch 9, and then the gas nozzle corresponding to the second clamp 12 is protruded from the notch 9. When the first clamp 11 has been inserted, at the initial stage of inserting the second clamp 12, the sharp-angled tip 21b of the blade 21a of the inserting knife 21 on the second clamp 12 first contacts the joint surface a 19 on the first clamp 11. As the second clamp 12 is pushed forward, the inserting knife 21 is gradually wedged between the first clamp 11 and the second clamp 12, so that the first clamp 11 and the second clamp 12 tend to move away from each other under the thrust of the inserting knife 21. The second clamp 12 and the second clamp 12 are adaptively elastically deformed, so that the gap between the first holding groove 18a and the second holding groove 18b is expanded, thereby reducing the friction thrust of the second holding groove 18b on the side wall of the cylindrical gas nozzle 6 during the insertion of the second clamp 12, thereby preventing the cylindrical gas nozzle 6 from retracting from the gas nozzle through hole 27 into the inner side of the wheel rim 5 during the insertion of the second clamp 12.

[0029] After the second clamping member 12 is fully inserted, the two blades 21 are just inserted into the two blade insertion openings 23, the two blades 21 are released from the wedged state, the shapes of the second clamping member 12 and the second clamping member 12 are restored, and the first embracing groove 18a and the second embracing groove 18b tightly embrace the waist of the cylindrical air nozzle 6, thereby restraining the cylindrical air nozzle 6 and avoiding the problem that the cylindrical air nozzle 6 is easily retracted from the air nozzle through hole 27 into the inner side of the rim 5 when the inner tube 2 is not inflated.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A restraining buckle for an inner tube air nozzle, characterized by: The invention comprises an air nozzle restraining buckle (10), wherein the air nozzle restraining buckle (10) comprises a first clamping member (11) and a second clamping member (12) which are spliced ​​together, wherein a first holding groove (18a) and a second holding groove (18b) are respectively provided on a side where the first clamping member (11) and the second clamping member (12) are close to each other, and when the first clamping member (11) and the second clamping member (12) are in a spliced ​​state, the first holding groove (18a) and the second holding groove (18b) form an air nozzle restraining channel (18); It also includes a hub motor end cover (7), the outer ring of the hub motor end cover (7) is integrally provided with a ring body (4), and a portion of the ring body (4) is provided with a gas nozzle protrusion notch (9); the columnar gas nozzle (6) of the inner tube (2) passes through the gas nozzle protrusion notch (9) and is exposed to the outside; the gas nozzle restraining buckle (10) is at the gas nozzle protrusion notch (9), and the gas nozzle restraining buckle (10) holds the columnar gas nozzle (6); The outer contour of the air nozzle restraining buckle (10) formed by splicing the first clamping piece (11) and the second clamping piece (12) is adapted to the inner contour of the air nozzle protruding notch (9).

2. The inner tube air nozzle restraining buckle according to claim 1, characterized in that: The air nozzle protrusion notch (9) is a U-shaped inner contour with an opening groove away from the side of the ring body (4); a contour step groove (9a) is provided along the U-shaped inner contour on the side of the air nozzle protrusion notch (9) close to the outer surface of the ring body (4); and a U-shaped limiting platform (51) is integrally provided at the outer end of the second clamping member (12); in the assembled state, the U-shaped limiting platform (51) is clamped in the contour step groove (9a) along the contour.

3. The inner tube air nozzle restraining buckle according to claim 2, characterized in that: Buckle grooves (14) are symmetrically provided on both sides of the first clamping member (11), and the length directions of the two buckle grooves (14) extend along the axial direction of the air nozzle restraining channel (18); buckle strips (16) capable of elastic deformation are provided in the two buckle grooves (14) along the length direction, and the sides of the bottom ends of the two buckle strips (16) close to each other are fixedly connected to the two sides of the bottom end of the first clamping member (11) through fixed arms (16a).

4. The inner tube pump nozzle restraining buckle according to claim 3, characterized in that: A hook block (17) is integrally provided on the side of the waist of the two buckle strips (16) away from each other. The side of the hook block (17) close to the bottom end of the first clamping member (11) is a hook inclined surface (17a), and the side away from the bottom end of the first clamping member (11) is a limiting plane (17b); in the assembled state, the two limiting planes (17b) of the two hook blocks (17) limit the contact with the inner side surface of the ring body (4).

5. The inner tube pump nozzle restraining buckle according to claim 4, characterized in that: The side surfaces of the first clamp (11) and the second clamp (12) close to each other are respectively marked as a joint surface (19) and b joint surface (20); a pair of inserting openings (23) for inserting knives are provided on the a joint surface (19), and a pair of inserting knives (21) are vertically fixedly provided on the b joint surface (20); the blades (21a) of the inserting knives (21) are non-sharp and passivated blades; the extension line of the blade (21a) of the inserting knives (21) forms an acute angle with the b joint surface (20), so that the end of the inserting knives (21) close to the bottom end of the second clamp (12) is an acute angle tip end (21b); in the assembled state, the two inserting knives (21) are just inserted into the two inserting knives insertion openings (23).

Images