CN212637051U

CN212637051U - Wheel with safety auxiliary inner tube

Info

Publication number: CN212637051U
Application number: CN202020560569.4U
Authority: CN
Inventors: 施顺洪
Original assignee: Hangzhou Leti International Trade Co ltd
Current assignee: Hangzhou Leti International Trade Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-03-02
Anticipated expiration: 2030-04-15

Abstract

The utility model relates to the field of wheels, and discloses a wheel with a safety auxiliary inner tube, which comprises a wheel hub and an inflatable outer tube, wherein the outer tube is arranged on the wheel hub, and an inflatable cavity is formed between the outer tube and the wheel hub; the tyre also comprises a solid inner tube, the inner tube is arranged in the inflation cavity, the outer circumferential side wall of the hub is provided with an annular groove, the inner tube is arranged in the annular groove and tightly holds the hub, the outer end part of the inner tube extends out of the notch of the annular groove, and a cavity for inflation is arranged between the inner tube and the outer tube. The automobile wheel adopts the structural form of the tire-in-tire, when the outer tire is burst due to foreign matters, the gas of the outer tire is released, the inner tire is used as a running tire, and due to the action of the inner tire, the automobile direction cannot be excessively deviated, the driving safety is ensured, and the traffic accidents are reduced. The solid inner tube can enable the vehicle to continuously run for a certain distance, and people can conveniently park the vehicle in a safety zone.

Description

Wheel with safety auxiliary inner tube

Technical Field

The utility model relates to a wheel field especially relates to a wheel with safe supplementary inner tube of a tyre.

Background

In the present society of high-speed operation, the position of automobiles is more and more important, passenger cars and trucks carry passenger and goods for transportation, the loss caused by annual traffic accidents is very large, and the traffic accidents caused by tire burst in the process of high-speed running of the automobiles occupy a large proportion, so that the great loss is caused.

The existing automobile wheels are basically inflatable wheels, the shock absorption effect of the inflatable wheels is good, but the existing automobile wheels are easy to burst, and the burst tire easily causes traffic accidents caused by the fact that the automobile direction is out of control. In order to prevent a solid tire from being present in the tire burst market, but the shock absorbing effect of the wheel is poor and the riding comfort of the vehicle interior is poor, for example, application No. 201810389560.9 discloses a solid wheel for a railway vehicle and a design method of the solid wheel for the railway vehicle, in which an outer hub vulcanized body 2 is mounted between the outer peripheries of inner hubs 1, and the outer hub vulcanized body 2 is a solid tire and can prevent a tire burst, but the shock absorbing effect is poor. The outer hub vulcanizing body 2 is composed of a plurality of circular arc-shaped vulcanizing sections 3, the vulcanizing sections 3 are sequentially arranged along the circumferential direction of the inner hub 1, each vulcanizing section 3 comprises a metal mounting framework 4 in a circular arc shape and a rubber layer 5 bonded on the upper surface of the metal mounting framework 4 in a vulcanizing manner, and the metal mounting framework 4 is detachably fixed on the inner hub 1. Although the split type outer hub vulcanizing body 2 is convenient to mount, the joint of the adjacent vulcanizing sections 3 is easy to damage, so that the service life of the wheel is shortened.

Therefore, the safety protection work is carried out all the time, the automobile accidents caused by the automobile tire burst are reduced all the time, and after a plurality of tests, a better method is found for reducing the automobile accidents caused by the automobile tire burst.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the shortcoming of the easy traffic accident that takes place of wheel flat tire among the prior art, provide a wheel with the safe auxiliary inner tube of a tyre.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a wheel with a safety auxiliary inner tube comprises a hub and an inflatable outer tube, wherein the outer tube is arranged on the hub, and an inflatable cavity is formed between the outer tube and the hub; the tyre also comprises a solid inner tube, the inner tube is arranged in the inflation cavity, the outer circumferential side wall of the hub is provided with an annular groove, the inner tube is arranged in the annular groove and tightly holds the hub, the outer end part of the inner tube extends out of the notch of the annular groove, and a cavity for inflation is arranged between the inner tube and the outer tube.

The automobile wheel adopts the structural form of the tire-in-tire, when the outer tire is burst due to foreign matters, the gas of the outer tire is released, the inner tire is used as a running tire, and due to the action of the inner tire, the automobile direction cannot be excessively deviated, the driving safety is ensured, and the traffic accidents are reduced. The solid inner tube can enable the vehicle to continuously run for a certain distance, and people can conveniently park the vehicle in a safety zone.

Preferably, the circumferential surface farthest from the central axis of the inner tube is the outer surface of the inner tube, the tread on the outer tube contacting with the ground is the outer surface of the outer tube, the surface of the inner tube opposite to the outer surface of the outer tube is the inner surface of the outer tube, the inner surface of the outer tube is arranged on the outer side of the outer surface of the inner tube, and a buffer gap is arranged between the inner surface of the outer tube and the outer surface of the inner. Due to the function of the buffer gap, the automobile has good damping effect in the driving process.

Preferably, the circumferential surface of the inner side of the inner tube is provided with at least two exhaust holes, all the exhaust holes are uniformly distributed on the circumferential side wall of the inner side of the inner tube, the central axes of the exhaust holes are perpendicular to the central axis of the inner tube, and the exhaust holes are blind holes. When the inner tube is mounted on the hub, the contact surface of the inner tube and the hub can extrude some air, and the air can be collected by the air vent, so that the inner tube is tightly attached to the hub.

Preferably, the inner tube has a cross-sectional shape in the radial direction which is i-shaped or oval or square or trapezoidal.

Preferably, the inner side wall of the inner tube is provided with a first notch for mounting a tire pressure detector, the first notch is a U-shaped first notch, and the first notch extends along the central axis direction of the inner tube in a concave manner

Preferably, the inner tube is a circular tube integrally molded from the same material. The integrated inner tube is simple in manufacturing process, a plurality of parts do not need to be assembled together, and machining efficiency is improved. Preferably, the inner tube is made of rubber. In order to enable the wheel after tire burst to run for a section of road, the inner tube made of rubber has a buffering effect, and the bumping amplitude of people in the vehicle is slightly smaller.

As preferred, the inner tube includes that the quantity is two solid inner tube units at least, all solid inner tube units end to end block connect and form the shape for annular inner tube, two adjacent solid inner tube unit junction are equipped with the second breach, install coupling assembling in the second breach, the coupling assembling both ends respectively with the solid inner tube unit connection of corresponding end, solid inner tube unit is close to second breach department and installs the spacer pin, be equipped with the screw hole that runs through along radial direction on the spacer pin, the coupling assembling both ends are respectively through the spacer pin threaded connection of screw hole with the corresponding end.

The solid inner tube is of a split mounting type structure, so that the inner tube is conveniently mounted on a hub, and people can directly mount the inner tube without dismounting automobile tires.

The connecting assembly is matched with the limiting pin, so that a plurality of solid inner tube units can be combined together, and the mounting is convenient.

Preferably, the connecting assembly comprises an adjusting part and screws, the screws extend out of two sides of the adjusting part, the thread turning directions of the two screws are opposite, and the two screws are respectively in threaded connection with the limiting pins at the corresponding ends through threaded holes; the adjusting part comprises a mounting box and a ratchet wheel assembly, a first bevel gear and a second bevel gear are mounted in the mounting box, the two screws are respectively fixed on two sides of the first bevel gear, the central axes of the two screws are on the same straight line, one end of the second bevel gear is meshed with the first bevel gear, and the other end of the second bevel gear extends out of the mounting box and is connected with the ratchet wheel assembly; the ratchet wheel assembly comprises a ratchet wheel, an adjusting head, a pawl and a torsion spring, the outer end part of the second conical tooth is fixedly connected with the ratchet wheel, the adjusting head is installed on the ratchet wheel and rotates synchronously with the ratchet wheel, the torsion spring is installed in the installation box and is fixedly connected with the pawl through a pin shaft, and the end part of the pawl is meshed with the ratchet wheel.

When the screw rod is in threaded connection with the limiting pin, people adjust the rotation of the screw rod through the adjusting part, so that two adjacent solid inner tube units are tensioned on the wheel hub, and are prevented from loosening.

The ratchet wheel component can prevent sliding teeth from occurring between the first bevel teeth and the second bevel teeth, so that the solid inner tube can be tightly embraced on the hub.

Preferably, a first through hole for a screw to pass through is formed in the side wall of the second notch, a second through hole for mounting a limiting pin is formed in the outer side wall of the solid inner tube unit, and the central axis of the second through hole is perpendicular to the central axis of the first through hole; all inlay the reinforcing plate that has the metal to make in every solid inner tube unit, the reinforcing plate is the arc, and the reinforcing plate both ends are all bent and are formed the stop collar that is used for suit spacer pin, and the stop collar holding is in the second through-hole, and the stop collar footpath upwards is equipped with the third breach that supplies the screw rod to pass through, and the tip of screw rod stretches into the second through-hole through the third breach inner.

The first through hole facilitates the screw rod to extend into the solid inner tube unit, the second through hole facilitates people to place the limiting pin, and the screw rod and the limiting pin are also connected in a mutually perpendicular mode due to the fact that the first through hole and the second through hole are mutually perpendicular. When people rotate the screw rod, the screw rod can relatively pull the limiting pin, so that the limiting pin pulls the solid inner tower unit.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect:

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the radial cross-section structure of the present invention.

Fig. 3 is a schematic view of the structure of fig. 1 without the tire casing.

Figure 4 is a schematic view of the construction of the tube of figure 3.

Fig. 5 is a schematic structural view of the solid inner tube of the present invention.

Fig. 6 is a schematic structural view of the stopper pin of fig. 5.

Fig. 7 is a schematic cross-sectional structure of fig. 5.

Fig. 8 is a schematic view of the combination structure of the reinforcing plate and the connecting member in fig. 7.

Fig. 9 is a schematic structural view of the reinforcing plate of fig. 8.

Fig. 10 is a schematic view of the connection assembly of fig. 5.

Fig. 11 is a schematic view of the internal structure of the connecting assembly of fig. 10.

Fig. 12 is a schematic structural view of the wheel of the present invention without the cover tyre.

The names of the parts indicated by the numerical references in the above figures are as follows: 10-wheel hub, 11-outer tire, 12-inner tire, 100-cavity, 101-annular groove, 111-outer tire outer face, 112-outer tire inner face, 121-exhaust hole, 122-first gap, 123-inner tire outer face, 200-buffer gap, 20-solid inner tire unit, 21-connecting component, 22-limit pin, 201-second gap, 202-first through hole, 203-second through hole, 204-reinforcing plate, 211-adjusting part, 212-screw rod, 221-threaded hole, 2041-limit sleeve, 2042-third gap, 2111-mounting box, 2112-ratchet component, 2113-first conical tooth, 2114-second conical tooth, 21121-ratchet, 21122-adjusting head and 21123-pawl.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A wheel with a safety auxiliary inner tube is shown in figures 1-4 and comprises a hub 10 and an inflatable outer tube 11, wherein an inflatable cavity is formed between the outer tube 11 and the hub 10, the outer tube 11 is made of rubber, the hub 10 is a stainless steel hub, and the outer tube 11 is arranged on the hub 10. The wheel further comprises a solid inner tube 12, the radial cross section of the inner tube 12 is I-shaped, the inner tube 12 is made of rubber, the inner tube 12 is integrally formed by the same material, and the projection shape of the inner tube 12 is circular, so that the inner tube 12 can be sleeved on the hub 10. The annular groove 101 is formed in the outer circumferential side wall of the hub 10, the inner tube 12 is installed in the annular groove 101 and tightly holds the hub 10, the inner side wall of the inner tube 12 is tightly attached to the hub 10, the inner tube 12 is contained in the outer tube 11, the structure of the tire in the tire is realized, when the outer tube 11 is not inflated, the inner tube 12 can be used as an auxiliary tire, after the tire is exploded, due to the effect of the inner tube 12, the traveling direction of the vehicle cannot be deviated too severely, the traveling safety of a driver is guaranteed, and traffic accidents are reduced. The outer circumferential side wall of the inner tube 12 extends out of the port of the annular groove 101, and when the outer tire 11 is burst, the inner tube 12 prevents the road surface from directly passing through the outer tire 11 and contacting the hub 10, so that the integrity of the hub 10 is ensured. A cavity 100 for inflation is arranged between the inner tube 12 and the outer tire 11.

The circumferential surface farthest from the central axis of the inner tube 12 is the outer surface 123 of the inner tube, the tread contacting the ground on the outer tube 11 is the outer surface 111 of the outer tube, the surface opposite to the outer surface 111 of the outer tube in the outer tube 11 is the inner surface 112 of the outer tube, the inner surface 112 of the outer tube is arranged outside the outer surface 123 of the inner tube, a buffer gap 200 is arranged between the inner surface 112 of the outer tube and the outer surface 123 of the inner tube, and the buffer gap 200 has a good shock absorption effect, so that people in the vehicle feel more.

According to the traffic accident caused by the tire burst of the automobile, the direction of the automobile is seriously deviated at the moment of the tire burst of the front tire of the automobile, the driving direction of the automobile cannot be controlled, and the accident is caused by the reasons that the automobile turns over, occupies another lane and the like. The inner tube 12 capable of bearing the weight of the vehicle is arranged on the front wheel hub 10 of the automobile, the inner tube 12 is arranged in the outer tire 11 of the automobile, and after the outer tire 11 bursts, the inner tube 12 in the outer tire 11 bears the weight of the automobile, so that the deviation caused by the burst of the outer tire 11 is reduced, the direction deviation of the automobile is reduced, and the probability of accidents and side turnover of the automobile is reduced.

Six exhaust holes 121 are formed in the circumferential side surface of the inner side of the inner tube 12, all the exhaust holes 121 are uniformly distributed in the circumferential side wall of the inner side of the inner tube 12, the central axis of each exhaust hole 121 is perpendicular to the central axis of the inner tube 12, and each exhaust hole 121 is a blind hole. The vent holes 121 are capable of storing air between the interface of the tire 12 and the hub 10 when the tire 12 is mounted on the hub 10, thereby allowing the tire 12 to fit tightly on the hub 10.

The sidewall of the side surface of the inner tube 12 is provided with a first notch 122 for installing the tire pressure detector, the first notch 122 is a U-shaped first notch, the first notch 122 extends along the central axis direction of the inner tube 12 in a concave manner, and the first notch 122 ensures that the tire pressure detector is firmly fixed in the tire and has good stability.

Example 2

Example 2 has substantially the same characteristics as example 1 except that the inner tube 12 has an elliptical cross-sectional radial shape.

Example 3

Example 3 has substantially the same characteristics as example 1, except that the inner tube 12 has a square shape in a radial cross-sectional shape.

Example 4

Example 4 has substantially the same characteristics as example 1, except that the inner tube 12 has a trapezoidal shape in a radial cross-sectional shape.

Example 5

Example 5 has substantially the same features as example 1, except that the tube 12 includes at least two solid tube units 20, as shown in fig. 5-12, all the solid tube units 20 are snap-fitted end to form the tube 12 in a ring shape, the solid tube units 20 have tenons at both ends and mortises at the other ends, and when two solid tube units 20 are coupled, the tenons of one solid tube unit 20 are snap-fitted into the mortises of the other solid tube unit 20. Adjacent two solid inner tube unit 20 junctions are equipped with second breach 201, install coupling assembling 21 in the second breach 201, coupling assembling 21 both ends are connected with the solid inner tube unit 20 that corresponds the end respectively, second breach 201 is the door frame shape, thereby easy to assemble coupling assembling 21, coupling assembling 21 both ends are connected with the solid inner tube unit 20 that corresponds the end respectively, can draw two solid inner tube units 20 near when adjusting coupling assembling 21, thereby make solid inner tube unit 20 can hold tightly on wheel hub 10. The solid inner tube unit 20 is provided with a limit pin 22 near the second notch 201, the limit pin 22 is provided with a threaded hole 221 penetrating along the radial direction, and two ends of the connecting assembly 21 are respectively in threaded connection with the limit pin 22 at the corresponding end through the threaded hole 221.

The connecting assembly 21 comprises an adjusting portion 211 and screws 212, the screws 212 extend out of two sides of the adjusting portion 211, the thread turning directions of the two screws 212 are opposite, the two screws 212 are respectively in threaded connection with the limiting pins 22 at the corresponding ends through threaded holes 221, the ends of the two solid inner tube units 20 can be drawn close when the two screws 212 rotate simultaneously, and the two drawn solid inner tube units can firmly hold the hub 10.

The adjusting portion 211 comprises a mounting box 2111 and a ratchet assembly 2112, a first bevel gear 2113 and a second bevel gear 2114 are mounted in the mounting box 2111, the two screws 212 are respectively fixed on two sides of the first bevel gear 2113, central axes of the two screws 212 are on the same straight line, one end of the second bevel gear 2114 is meshed with the first bevel gear 2113, the other end of the second bevel gear 2114 extends out of the mounting box 2111 to be connected with the ratchet assembly 2112, and the driving ratchet assembly 2112 can transmit power to the first bevel gear 2113.

The ratchet assembly 2112 comprises a ratchet 21121, an adjusting head 21122, a pawl 21123 and a torsion spring, the outer end part of the second bevel gear 2114 is fixedly connected with the ratchet 21121, and the rotation of the ratchet 21121 drives the second bevel gear 2114 to rotate. The adjusting head 21122 is mounted on the ratchet 21121 and rotates synchronously with the ratchet 21121, the adjusting head 21122 is a hexagonal head, and one adjusts the rotation of the ratchet 21121 by adjusting the hexagonal head by a handle. The torsion spring is installed in the installation box 2111, is fixedly connected with the pawl 21123 through a pin shaft, the end part of the pawl 21123 is meshed with the ratchet 21121, and is used for pressing the pawl 21123, so that the pawl 21123 can be pressed on the ratchet 21121, and the solid inner tube unit 20 is prevented from being loosened by the rotation of the ratchet 21121.

The side wall of the second notch 201 is provided with a first through hole 202 for the screw 212 to pass through, the outer side wall of the solid inner tube unit 20 is provided with a second through hole 203 for installing the limit pin 22, and the central axis of the second through hole 203 is perpendicular to the central axis of the first through hole 202.

All inlay the reinforcing plate 204 that has the stainless steel to make in every solid inner tube unit 20, reinforcing plate 204 is the arc, the crooked radian of reinforcing plate 204 is the same with the crooked radian of solid inner tube unit 20, reinforcing plate 204 both ends are all bent and are formed the stop collar 2041 that is used for suit spacer pin 22, stop collar 2041 holding is in second through-hole 203, stop collar 2041 radially is equipped with the third breach 2042 that supplies screw rod 212 to pass through, the tip of screw rod 212 stretches into the inner of second through-hole 203 through third breach 2042. The step of assembling the solid inner tube includes the steps of firstly inserting the limit pin 22 into the limit sleeve 2041, rotating the limit pin 22 to align the threaded hole 221 of the limit pin with the first through hole 202, then installing the connecting assembly 21 between the two solid inner tube units 20, extending the screw 212 of the connecting assembly 21 into the threaded hole 221, and then rotating the adjusting head 21122, so that the first bevel gear 2113 rotates, the first bevel gear 2113 drives the screw 212 at the two ends of the first bevel gear to rotate, the screw 212 is in threaded connection with the limit pin 22 and pulls the limit pin 22 to move inwards, the limit pin 22 pulls the solid inner tube units 20 to move inwards, and therefore the two adjacent solid inner tube units 20 are connected together and tightly held on the hub 10.

The solid inner tube is of an assembled structure, so that the solid inner tube is conveniently installed on the hub 10, and people can directly install the solid inner tube without disassembling automobile tires. The connection assembly 21 and the limit pin 22 are matched to combine a plurality of solid inner tube units 20 together, so that the installation is convenient. The adjustability and locking of the connecting assembly 21 is fully exploited with full consideration of safety performance to prevent loosening of the solid tire on the hub 10 during vehicle travel. The solid tire is loosened to cause difficulty in controlling the direction of the automobile and cause potential safety hazards of the automobile.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A wheel with a safety auxiliary inner tube comprises a hub (10) and an inflatable outer tube (11), wherein the outer tube (11) is arranged on the hub (10), and an inflatable cavity is formed between the outer tube (11) and the hub (10); the method is characterized in that: the tyre inflation device is characterized by further comprising a solid inner tube (12), the inner tube (12) is arranged in the inflation cavity, an annular groove (101) is formed in the outer circumferential side wall of the hub (10), the inner tube (12) is installed in the annular groove (101) and tightly embraces the hub (10), the outer end of the inner tube (12) extends out of a notch of the annular groove (101), and a cavity (100) for inflation is arranged between the inner tube (12) and the outer tire (11).

2. A wheel with a safety-assisted inner tube according to claim 1, characterized in that: the circumferential surface farthest from the central axis of the inner tube (12) in vertical distance is an outer tube surface (123), the tread surface contacting with the ground on the outer tube (11) is an outer tube surface (111), the surface in the outer tube (11) opposite to the outer tube surface (111) is an inner tube surface (112), the inner tube surface (112) is arranged on the outer side of the outer tube surface (123), and a buffer gap (200) is arranged between the inner tube surface (112) and the outer tube surface (123).

3. A wheel with a safety-assisted inner tube according to claim 1, characterized in that: the inner side of the inner tube (12) is provided with at least two exhaust holes (121) on the circumferential surface, all the exhaust holes (121) are uniformly distributed on the circumferential side wall of the inner side of the inner tube (12), the central axis of each exhaust hole (121) is perpendicular to the central axis of the inner tube (12), and each exhaust hole (121) is a blind hole.

4. A wheel with a safety-assisted inner tube according to claim 1, characterized in that: the radial cross section of the inner tube (12) is I-shaped or oval or square or trapezoid.

5. A wheel with a safety-assisted inner tube according to any one of claims 1 to 4, characterized in that: the side wall of the side surface of the inner tube (12) is provided with a first notch (122) for installing a tire pressure detector, the first notch (122) is a U-shaped first notch, and the first notch (122) extends along the central axis direction of the inner tube (12) in a concave mode.

6. A wheel with a safety-assisted inner tube according to claim 1, characterized in that: the inner tube (12) is a circular inner tube which is integrally formed by the same material.

7. A wheel with a safety-assisted inner tube according to claim 1, characterized in that: the inner tube (12) is made of rubber.

8. A wheel with a safety-assisted inner tube according to claim 1, characterized in that: the inner tube (12) is including the solid inner tube unit (20) that quantity is two at least, all solid inner tube units (20) end to end block connect and form the shape for annular inner tube (12), two adjacent solid inner tube units (20) junctions are equipped with second breach (201), install coupling assembling (21) in second breach (201), coupling assembling (21) both ends are connected with the solid inner tube unit (20) that correspond the end respectively, solid inner tube unit (20) are close to second breach (201) department and install spacer pin (22), be equipped with on spacer pin (22) along the screw hole (221) that radial direction runs through, coupling assembling (21) both ends are respectively through screw hole (221) and spacer pin (22) threaded connection that corresponds the end.

9. A wheel with a safety-assisted inner tube according to claim 8, characterized in that: the connecting assembly (21) comprises an adjusting part (211) and screws (212), the screws (212) extend out of two sides of the adjusting part (211), the thread turning directions of the two screws (212) are opposite, and the two screws (212) are respectively in threaded connection with the limiting pins (22) at the corresponding ends through threaded holes (221); the adjusting portion (211) comprises a mounting box (2111) and a ratchet assembly (2112), first bevel teeth (2113) and second bevel teeth (2114) are mounted in the mounting box (2111), the two screws (212) are respectively fixed to two sides of the first bevel teeth (2113), central axes of the two screws (212) are located on the same straight line, one end of each second bevel tooth (2114) is meshed with the corresponding first bevel tooth (2113), and the other end of each second bevel tooth (2114) extends out of the mounting box (2111) to be connected with the ratchet assembly (2112); the ratchet assembly (2112) comprises a ratchet wheel (21121), an adjusting head (21122), a pawl (21123) and a torsion spring, the outer end part of the second bevel gear (2114) is fixedly connected with the ratchet wheel (21121), the adjusting head (21122) is installed on the ratchet wheel (21121) and synchronously rotates with the ratchet wheel (21121), the torsion spring is installed in the installation box (2111), the torsion spring is fixedly connected with the pawl (21123) through a pin shaft, and the end part of the pawl (21123) is meshed with the ratchet wheel (21121).

10. A wheel with a safety-assisted inner tube according to claim 9, characterized in that: a first through hole (202) for a screw rod (212) to pass through is formed in the side wall of the second notch (201), a second through hole (203) for installing a limiting pin (22) is formed in the outer side wall of the solid inner tube unit (20), and the central axis of the second through hole (203) is perpendicular to the central axis of the first through hole (202); all inlay reinforcing plate (204) that have the metal to make in every solid inner tube unit (20), reinforcing plate (204) are the arc, reinforcing plate (204) both ends are all bent and are formed spacing sleeve (2041) that are used for suit spacer pin (22), spacing sleeve (2041) holding is in second through-hole (203), radially be equipped with third breach (2042) that supply screw rod (212) to pass through on spacing sleeve (2041), the tip of screw rod (212) stretches into second through-hole (203) inner through third breach (2042).