CN112172987A

CN112172987A - Rear wheel adjusting mechanism of single-leg scooter

Info

Publication number: CN112172987A
Application number: CN202011116398.7A
Authority: CN
Inventors: 于东玖; 刘贞祥
Original assignee: Nanjing Tech University
Current assignee: Nanjing Tech University
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-01-05
Anticipated expiration: 2040-10-19
Also published as: CN112172987B

Abstract

The invention discloses a rear wheel adjusting mechanism of a single-leg scooter, which comprises a fixed section, an adjusting section and a locking assembly, wherein the adjusting section is used for installing a rear wheel, the locking assembly is used for locking the fixed section and the adjusting section; meanwhile, the rear wheel adjusting mechanism can facilitate the folding of the rear wheels and is convenient to carry.

Description

Rear wheel adjusting mechanism of single-leg scooter

Technical Field

The invention relates to the field of rehabilitation training equipment, in particular to a rear wheel turnover mechanism of a single-leg scooter.

Background

In the domestic existing market, the rehabilitation walking aid product specially designed for the disabled with single limb of lower limb is single, and only a crutch and a wheelchair can be selected. A patient user uses the underarm crutch to assist standing and walking, so that a certain degree of damage (such as underarm nerve damage and the like) is caused to the body of the user and the danger of uncontrolled tumble exists; the aim of lower limb rehabilitation training cannot be well met when a patient takes the wheelchair. The lower limb rehabilitation training scooter is a product type between a crutch and a wheelchair, is easier to balance the body, is quick to move compared with the crutch, is easier to perform rehabilitation training compared with the wheelchair, is beneficial to the recovery of limbs, and has similar products in the international market.

Chinese patent document No. CN207141263U, 03-27.2018, discloses a single-leg walking aid vehicle, which includes handles disposed at both ends of a front beam; the front vertical beam is connected to the middle part of the front cross beam and is connected with the telescopic pipe; the lower end of the front supporting pipe is connected with the folding device, and the upper end of the front supporting pipe is provided with an opening part for the telescopic pipe to enter; a frame; the folding device comprises a vertical pipe connected with the folding device, a supporting pipe connected with one side of the vertical pipe, a pipe seat connected with the supporting pipe, a front wheel beam connected with the vertical pipe, a front wheel body arranged at two ends of the front wheel beam, a rear wheel beam connected with the supporting pipe and a rear wheel body arranged at two ends of the rear wheel beam; the number of the supporting tubes is two, and the supporting tubes are widened gradually to extend to a rear wheel beam; a leg saddle; it comprises a support saddle pipe sleeved on the pipe seat and a support leg saddle part arranged above the support saddle pipe. Structurally, the four wheels are directly fixedly installed on the wheels through the transverse shafts, a damping system is absent, the use comfort of the product is not enough, the sliding motion foot and the rear wheel are interfered with each other, the deviation of the body gravity center caused by the difference of the supporting legs in the actual use process of a user is not considered, and the rollover tendency or the rollover tendency is easy to occur. The frame assembly adopts the traditional process methods such as welding processing and metal post-processing, and the product standardization degree is low, the manufacturing efficiency is low, the supply period is long, and the like.

Chinese patent document No. CN210027772U discloses in 2020, 2.7.a foldable single-leg wheelchair comprising an armrest, a seat, a front wheel assembly and a rear wheel assembly, wherein an armrest adjusting bottom tube and a bottom tube support seat are arranged between the armrest and the front wheel assembly, and a through hole is arranged at the lower end of the armrest adjusting bottom tube; be equipped with handrail mounting in the bottom tube supporting seat, handrail mounting upper end is equipped with concave groove, handrail mounting lower extreme is equipped with the connecting hole, handrail mounting upper end stretches into in handrail regulation bottom tube lower extreme cavity, fixed subassembly passes jack on the bottom tube supporting seat in proper order, the through-hole of handrail regulation bottom tube lower extreme and the concave groove of handrail mounting upper end, handrail mounting lower extreme connecting hole is connected with the quick detach and pulls the knot, the quick detach is pulled the knot front end and is equipped with elastomeric element, the quick detach is pulled the knot and is passed elastomeric element and handrail mounting and fixed column assembly and be connected fixedly. The utility model discloses a product convenient to carry can fold according to the space size of using the scene, saves space, is convenient for transport or deposits. The whole vehicle of the vehicle type is produced by assembling standardized parts, belongs to a newer vehicle type of the same kind of products, but in the structure of the vehicle type, four wheels are directly fixedly installed on the wheels, and the problem that the user is prone to side turning or side turning due to the fact that the body gravity center is deviated due to different supporting legs in the actual use process is not considered.

Disclosure of Invention

The purpose of the invention is as follows: the invention provides a rear wheel turnover mechanism of a rehabilitation training single-leg scooter, aiming at the problems that the body gravity center of a user is deviated due to different supporting legs, the stability of the scooter is insufficient in the product using process, the side turning is easy to occur, the use experience is poor and the like, and the rear wheel turnover mechanism solves the problem that the motion foot of the user interferes with the rear wheel in the process of using the single-leg scooter, keeps the body gravity center and the stability of the scooter and prevents the side turning.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a single-leg scooter rear wheel adjustment mechanism, includes the canned paragraph, is used for installing the regulation section of rear wheel and carries out the locking subassembly that locks canned paragraph and regulation section, the canned paragraph is fixed on the frame of single-leg scooter, and the regulation section is connected with the canned paragraph movably, through the relative position of adjusting the regulation section with the canned paragraph for the rear wheel can carry out position control in the both sides of canned paragraph, realizes that the single-leg scooter focus adjusts according to the change of user's supporting legs, thereby solves the problem that the user leads to the skew of health focus because of the difference of supporting leg.

Specifically, the adjusting section comprises a turnover shaft, and the fixed section is movably connected with the adjusting section through the turnover shaft;

one end of the turnover shaft is connected with the adjusting section, and the other end of the turnover shaft is movably arranged in the fixed section, can rotate in the fixed section and is locked by the locking assembly;

the rear wheel of the single-leg scooter is arranged on the adjusting section, and when the turnover shaft rotates, the adjusting section is turned over together, so that the rear wheel is turned over on two sides of the frame.

Further, the locking assembly comprises a lock cylinder for locking the turnover shaft, a lock cylinder driving assembly for moving the lock cylinder, and a limiting assembly for limiting the lock cylinder driving assembly.

The present invention provides the following three specific structures:

the first method comprises the following steps: the lock core is of a U-shaped structure and comprises a connecting end in the middle and bolt ends on two sides; the rear end of the adjusting section is provided with a slot corresponding to the bolt end, and the turnover shaft is arranged between the bolt ends at two sides and is fixed with the adjusting section; the U-shaped lock cylinder can move back and forth in the fixed section, and the bolt end is inserted into the slot of the adjusting section, so that the turning shaft and the adjusting section are locked.

The lock cylinder driving assembly comprises a connecting block and a sliding block; the connecting block is fixed with the connecting end of the lock cylinder, the sliding block is arranged on the outer side of the fixed section in a sliding mode and connected with the connecting block located in the fixed section, the sliding block slides forwards and backwards to drive the connecting block and the lock cylinder to move forwards and backwards, and therefore the plug of the plug pin end of the lock cylinder in the slot is achieved.

The limiting assembly comprises a limiting block and a return spring; the limiting block is positioned at the rear end of the connecting block and used for limiting the connecting block to move backwards; the bottom of the limiting block is connected with the inside of the fixed section through a return spring, the top of the limiting block is exposed out of the top of the fixed section, the middle of the limiting block is provided with a bending part matched with the connecting block, and the front end of the bottom of the limiting block is also provided with a reverse buckle; when the top of the limiting block is pressed, the reverse buckle moves downwards to remove the limiting effect on the connecting block, and the sliding block can slide forwards and backwards to drive the connecting block and the lock cylinder to realize the plugging and unplugging of the lock cylinder in the slot.

And the second method comprises the following steps: the rear end of the turnover shaft is provided with an open through groove, and the front end of the turnover shaft is fixed with the adjusting section; the lock cylinder is arranged in the through groove of the turnover shaft in a penetrating way, and two ends of the lock cylinder are respectively connected with the lock cylinder driving component positioned at the outer side of the fixed section; the lock cylinder driving assembly is a pair of sliding blocks which are arranged outside the fixed section in a sliding manner; when the lock cylinder penetrates through the through groove of the turnover shaft, the turnover shaft is locked; when the sliding block slides, the lock cylinder slides out from the opening of the through groove, the turnover shaft can rotate freely at the moment, and the turnover of the adjusting section and the rear wheel is realized.

The front end of trip shaft is equipped with the draw-in groove of round indent, and the canned paragraph is located trip shaft through-put department and is equipped with the snap ring that corresponds the draw-in groove, goes into the draw-in groove through the snap ring card, realizes the coupling of trip shaft and canned paragraph.

The limiting assembly comprises a limiting block, a return spring, a spring fixing frame and a press button; the limiting block is positioned in the fixed section, the front end of the limiting block is provided with a reverse buckle which is exposed from the side surface of the fixed section and used for limiting the sliding of the sliding block, the rear end of the limiting block is connected with a push button, and the push button is embedded in two sides of the fixed section; reset spring installs on the spring mount, and the tip is connected with the push button that pushes down, makes the back-off of stopper move down and removes the limiting action to the slider when pressing the push button down, and the slider can slide around this moment, drives the lock core and passes in and out at the logical groove opening part of trip shaft.

And the third is that: the lock cylinder is a block body, one end of the lock cylinder is connected with the turnover shaft in a shaft mode, and the other end of the lock cylinder is fixed with the adjusting section;

the lock cylinder driving assembly comprises a group of connecting rods, a rotating shaft, a shaft frame and a driving lever, one end of each connecting rod is connected with the overturning shaft, the other end of each connecting rod is fixed on the corresponding rotating shaft, the shaft frame is fixed inside the corresponding fixed section, one end of each rotating shaft is connected to the corresponding shaft frame in a shaft mode, the other end of each rotating shaft is exposed out of the corresponding fixed section and connected with the driving lever, the driving lever can rotate up and down to drive the corresponding rotating shaft to rotate, the overturning shaft and the lock cylinder are pulled through the corresponding connecting rods, the lock cylinder is pushed and pulled in the corresponding fixed section, when the lock cylinder is pushed out of the corresponding fixed section, the lock cylinder is overturned.

The deflector rod is connected with the end part of the rotating shaft through the bolt column and can rotate along the side surface of the bolt column close to and far away from the fixed section;

the limiting assembly is a limiting block arranged on the side face of the fixed section, and after the lock cylinder is pulled into the fixed section, the shifting rod is limited below the limiting block and cannot rotate upwards, so that the lock cylinder driving assembly is locked.

Has the advantages that:

the rear wheel adjusting mechanism is mainly applied to a lower limb rehabilitation training single-foot scooter, can realize the overturning of the rear wheels at two sides of a frame according to the difference of supporting legs of a user, solves the problem of body gravity center deviation caused by the difference of the supporting legs, effectively keeps the body balance and the body stability of the user, and avoids the accident of side turning; meanwhile, the rear wheel adjusting mechanism can facilitate the folding of the rear wheels and is convenient to carry.

Drawings

The foregoing and/or other advantages of the invention will become further apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic view showing the overall structure of the one-leg scooter of embodiment 1.

Figure 2 is a block diagram of the locking assembly of the rear wheel adjustment mechanism in the single-legged scooter of embodiment 1.

Fig. 3 is a block diagram of a key cylinder driving assembly of a rear wheel adjusting mechanism in the single-leg scooter of embodiment 1.

Figure 4 is a schematic view of the rear wheel adjustment state of the one-leg scooter of embodiment 1.

Figure 5 is a schematic view of the rear wheel adjustment state two of the one-leg scooter of embodiment 1.

Figure 6 is a three-schematic view showing the rear wheel adjustment state of the one-leg scooter of embodiment 1.

Figure 7 is a four-schematic view of the rear wheel adjustment state of the one-leg scooter of embodiment 1.

Figure 8 is a block diagram of the locking assembly of the rear wheel adjustment mechanism in the single-legged scooter of embodiment 2.

Fig. 9 is a block diagram of a key cylinder driving assembly of a rear wheel adjusting mechanism in the single-leg scooter of embodiment 2.

Fig. 10 is a schematic structural view of a lock cylinder of a rear wheel adjusting mechanism in the single-leg scooter of embodiment 2.

Fig. 11 is an external structural view of a rear wheel adjusting mechanism in the one-leg scooter of embodiment 2.

Fig. 12 is an internal structural view of a rear wheel adjustment mechanism in the one-leg scooter of embodiment 3.

Fig. 13 is an external structural view of a rear wheel adjustment mechanism in the one-leg scooter of embodiment 3.

Wherein each reference numeral represents:

1, fixing section; 2, a regulating section; 21 slot; 3, turning over a shaft; 4, a locking component; 41a lock cylinder; 41a connection end; 41b a plug end; 42a lock cylinder drive assembly; 42a connecting block; 42b a slider; 43a limiting component; 43a limiting block; 43b a return spring; 43c a bent portion; 43d are reversed.

31 through grooves; 32 card slots; 11 a snap ring; 43e spring mount; 43f press the button.

42c connecting rod; 42d a rotating shaft; 42e a pedestal; 42f a deflector rod; 42g of a plug; 12 chute.

And I, a vehicle frame.

Detailed Description

The invention will be better understood from the following examples.

The structures, proportions, and dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the skilled in the art. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

Example 1

As shown in fig. 1, the rear wheel adjustment mechanism is located on the rear wheel frame i of the single-leg scooter and is circled.

As shown in fig. 2, the rear wheel adjusting mechanism comprises a fixed section 1, an adjusting section 2 for mounting the rear wheel, and a locking assembly 4 for locking the fixed section 1 and the adjusting section 2, wherein the fixed section 1 is fixed on the frame of the single-leg scooter, the adjusting section 2 is movably connected with the fixed section 1, and the rear wheel can be adjusted on two sides of the fixed section 1 by adjusting the relative positions of the adjusting section 2 and the fixed section 1.

As shown in fig. 3, the adjusting section 2 includes a turning shaft 3, and the fixed section 1 is movably connected with the adjusting section 2 through the turning shaft 3. One end of the turnover shaft 3 is fixed with the adjusting section 2, the other end of the turnover shaft is movably arranged in the fixed section 1, the turnover shaft can rotate in the fixed section 1, and locking is carried out through the locking assembly 4.

The rear wheel of the single-leg scooter is arranged on the adjusting section 2, and when the turning shaft 3 rotates, the adjusting section 2 turns over together, so that the turning of the rear wheel on the two sides of the frame is realized.

The locking assembly 4 includes a key cylinder 41 for locking the tumble shaft 3, a key cylinder driving assembly 42 for moving the key cylinder 41, and a restraining assembly 43 for restraining the key cylinder driving assembly 42.

The lock cylinder 41 is of a U-shaped structure and comprises a connecting end 41a in the middle and bolt ends 41b on two sides; the rear end of the adjusting section 2 is provided with a slot 21 corresponding to the bolt end 41b, and the turnover shaft 3 is arranged between the bolt ends 41b at two sides and fixed with the adjusting section 2; the U-shaped lock cylinder 41 can move back and forth in the fixed section 1 and is inserted into the slot 21 of the adjusting section 2 through the bolt end 41b, so that the overturning shaft 3 and the adjusting section 2 are locked.

The key cylinder driving assembly 42 includes a connecting block 42a and a slider 42 b; the connecting block 42a is fixed with the connecting end 41a of the lock cylinder 41, the sliding block 42b is slidably arranged on the outer side of the fixed section 1 and is connected with the connecting block 42a in the fixed section 1, and the sliding block 42b slides forwards and backwards to drive the connecting block 42a and the lock cylinder 41 to move forwards and backwards, so that the plug of the plug pin end 41b of the lock cylinder 41 in the slot 21 is realized.

The limiting assembly 43 comprises a limiting block 43a and a return spring 43 b; the limiting block 43a is positioned at the rear end of the connecting block 42a and is used for limiting the connecting block 42a to move backwards; the bottom of the limiting block 43a is connected with the inside of the fixed section 1 through a return spring 43b, the top of the limiting block is exposed out of the top of the fixed section 1, the middle of the limiting block is provided with a bending part 43c matched with the connecting block 42a, and the front end of the bottom of the limiting block 43a is also provided with an inverted buckle 43 d; when the top of the limiting block 43a is pressed, the reverse buckle 43d moves downwards to remove the limiting effect on the connecting block 42a, and at the moment, the sliding block 42b can slide back and forth to drive the connecting block 42a and the lock cylinder 41 to realize the insertion and extraction of the lock cylinder 41 in the slot 21.

When a user uses the scooter, if the supporting leg is the left leg, the right leg needs to be put on the scooter cushion. At the moment, the two rear wheels are adjusted to the right side of the rear wheel frame through the rear wheel adjusting mechanism (as shown in figure 4, the state is one), so that the distance between the left leg supporting leg and the center of gravity of the scooter is longer, better support is achieved, and side turning accidents are avoided. Similarly, if the support leg is the right leg, the left leg needs to rest on the scooter seat cushion. At this time, both rear wheels are adjusted to the left side of the rear wheel frame by the rear wheel adjustment mechanism (as shown in fig. 5, state two). Of course, the two rear wheels can be adjusted to the inner side of the frame through the rear wheel adjusting mechanism (as shown in fig. 6, state three) to reduce the occupied area of the single-wheel vehicle, and the single-wheel vehicle is convenient to carry; alternatively, the rear wheel adjusting mechanisms are adjusted to the outer side of the vehicle frame (as shown in fig. 7, state four), so that the support stability of the vehicle body by the two rear wheels is improved.

Example 2

As shown in fig. 8 to 11, the rear wheel adjustment mechanism also includes a fixed segment 1, an adjustment segment 2, a trip shaft 3, and a locking assembly 4. The locking assembly 4 includes a key cylinder 41 for locking the tumble shaft 3, a key cylinder driving assembly 42 for moving the key cylinder 41, and a restraining assembly 43 for restraining the key cylinder driving assembly 42.

The rear end of the turnover shaft 3 is provided with an open through groove 31, and the front end of the turnover shaft is fixed with the adjusting section 2; the lock cylinder 41 is arranged in the through groove 31 of the turnover shaft 3 in a penetrating way, and two ends of the lock cylinder are respectively connected with a lock cylinder driving component 42 positioned at the outer side of the fixed section 1; the lock cylinder driving component 42 is a pair of sliding blocks 42b which are arranged outside the fixed section 1 in a sliding way; when the lock cylinder 41 penetrates through the through groove 31 of the turnover shaft 3, the turnover shaft 3 is locked; when the sliding block 42b slides out the lock cylinder 41 from the opening of the through slot 31, the turning shaft 3 can rotate freely, and the turning of the adjusting section and the rear wheel is realized.

The front end of the turning shaft 3 is provided with a circle of concave clamping grooves 32, the fixing section 1 is provided with a clamping ring 11 corresponding to the clamping grooves 32 at the penetrating position of the turning shaft 3, and the clamping ring 11 is clamped into the clamping grooves 32 to realize the shaft connection of the turning shaft 3 and the fixing section 1.

The limiting assembly 43 comprises a limiting block 43a, a return spring 43b, a spring fixing frame 43e and a press button 43 f; the limiting block 43a is positioned inside the fixed section 1, the front end of the limiting block is provided with an inverted buckle 43d which is exposed from the side surface of the fixed section 1 and used for limiting the sliding of the sliding block 42b, the rear end of the limiting block is connected with a lower press button 43f, and the lower press buttons 43f are embedded at two sides of the fixed section 1; the return spring 43b is mounted on the spring fixing frame 43e, the end part of the return spring is connected with the press button 43f, when the press button 43f is pressed to enable the reverse buckle 43d of the limiting block 43a to move downwards to release the limiting effect on the sliding block 42b, the sliding block 42b can slide forwards and backwards at the moment, and the lock cylinder 41 is driven to enter and exit from the opening of the through groove 31 of the turnover shaft 3. When the lock cylinder 41 slides out of the through groove 31, the rear wheel can be turned and adjusted by turning the adjusting section 2, and then the lock cylinder 41 is driven by the sliding block 42b to slide into the through groove 31, so that the lock cylinder 41 and the adjusting section 2 are locked.

Example 3

As shown in fig. 12 and 13, the rear wheel adjustment mechanism also includes a fixed segment 1, an adjustment segment 2, a trip shaft 3, and a locking assembly 4. The locking assembly 4 includes a key cylinder 41 for locking the tumble shaft 3, a key cylinder driving assembly 42 for moving the key cylinder 41, and a restraining assembly 43 for restraining the key cylinder driving assembly 42.

The lock core 41 is a block body, one end of which is coupled with the turning shaft 3, and the other end is fixed with the adjusting section 2.

The lock cylinder driving assembly 42 comprises a group of connecting rods 42c, a rotating shaft 42d, a shaft bracket 42e and a shifting rod 42f, one end of each connecting rod 42c is connected with the turnover shaft 3, the other end of each connecting rod 42c is fixed on the rotating shaft 42d, the shaft bracket 42e is fixed inside the fixed section 1, one end of each rotating shaft 42d is connected to the shaft bracket 42e, the other end of each rotating shaft 42d is exposed out of the fixed section 1 and connected with the shifting rod 42f, the shifting rod 42f can rotate up and down to drive the rotating shaft 42d to rotate, the turnover shaft 3 and the lock cylinder 41 are pulled through the connecting rods 42c to realize the push-pull of the lock cylinder 41 in the fixed section 1, when the lock cylinder 41 is pushed out of the fixed section 1, the lock cylinder 41 is turned over up and down by taking the turnover shaft 3 as.

The shift lever 42f is connected with the end of the rotating shaft 42d through a bolt 42g and can rotate along the bolt 42g close to and far away from the side surface of the fixed section 1;

the limiting component 43 is a limiting block 43a arranged on the side surface of the fixed section 1, and when the lock cylinder 41 is pulled into the fixed section 1, the shift lever 42f is limited below the limiting block 43a and cannot rotate upwards, so that the lock cylinder driving component is locked.

While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that numerous modifications and enhancements can be made without departing from the principles of the invention, which should be considered as within the scope of the invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. The utility model provides a single leg scooter rear wheel adjustment mechanism, its characterized in that includes canned paragraph (1), is used for installing regulation section (2) of rear wheel and locks locking Assembly (4) that canned paragraph (1) and regulation section (2) lock, canned paragraph (1) is fixed on the frame of single leg scooter, and regulation section (2) are connected with canned paragraph (1) movably, through adjusting the relative position of tempering section (2) and canned paragraph (1) for the rear wheel can carry out position control in the both sides of canned paragraph (1).

2. The rear wheel adjustment mechanism of the single-leg scooter as claimed in claim 1, wherein said adjustment section (2) comprises a roll-over shaft (3), the fixed section (1) and the adjustment section (2) are movably connected by the roll-over shaft (3);

one end of the turning shaft (3) is connected with the adjusting section (2), and the other end of the turning shaft is movably arranged in the fixed section (1), can rotate in the fixed section (1), and is locked through the locking assembly (4);

the rear wheel of the single-leg scooter is arranged on the adjusting section (2), and when the turning shaft (3) rotates, the adjusting section (2) turns over together, so that the turning of the rear wheel on the two sides of the frame is realized.

3. The scooter rear wheel adjustment mechanism according to claim 2, characterized in that the locking assembly (4) comprises a lock cylinder (41) for locking the roll-over shaft (3), a lock cylinder driving assembly (42) for moving the lock cylinder (41), and a restraining assembly (43) for restraining the lock cylinder driving assembly (42).

4. The scooter rear wheel adjustment mechanism according to claim 3 wherein said lock cylinder (41) is of a U-shaped configuration comprising a connecting end (41a) in the middle and a latch end (41b) on both sides; the rear end of the adjusting section (2) is provided with a slot (21) corresponding to the bolt ends (41b), and the turnover shaft (3) is arranged between the bolt ends (41b) at two sides and fixed with the adjusting section (2); the U-shaped lock cylinder (41) can move back and forth in the fixed section (1) and is inserted into the slot (21) of the adjusting section (2) through the bolt end (41b), so that the turning shaft (3) and the adjusting section (2) are locked.

5. The single-leg scooter rear wheel adjustment mechanism according to claim 4, wherein said key cylinder drive assembly (42) comprises a connecting block (42a) and a slider (42 b); the connecting block (42a) is fixed with the connecting end (41a) of the lock cylinder (41), the sliding block (42b) is arranged on the outer side of the fixing section (1) in a sliding mode and is connected with the connecting block (42a) located in the fixing section (1), the sliding block (42b) slides forwards and backwards to drive the connecting block (42a) and the lock cylinder (41) to move forwards and backwards, and therefore the plug pin end (41b) of the lock cylinder (41) can be plugged into and pulled out of the slot (21).

6. The single-leg scooter rear wheel adjustment mechanism according to claim 5, wherein said limit block assembly (43) comprises a limit block (43a) and a return spring (43 b); the limiting block (43a) is positioned at the rear end of the connecting block (42a) and is used for limiting the connecting block (42a) to move backwards; the bottom of the limiting block (43a) is connected with the inside of the fixed section (1) through a return spring (43b), the top of the limiting block is exposed out of the top of the fixed section (1), the middle of the limiting block is provided with a bent part (43c) matched with the connecting block (42a), and the front end of the bottom of the limiting block (43a) is also provided with an inverted buckle (43 d); when the top of the limiting block (43a) is pressed, the reverse buckle (43d) moves downwards to remove the limiting effect on the connecting block (42a), and at the moment, the sliding block (42b) can slide back and forth to drive the connecting block (42a) and the lock cylinder (41) to realize the insertion and extraction of the lock cylinder (41) in the slot (21).

7. The rear wheel adjustment mechanism of the single-leg scooter as claimed in claim 3, wherein said roll-over shaft (3) is provided with an open through slot (31) at its rear end, and is fixed at its front end to the adjustment section (2); the lock cylinder (41) is arranged in the through groove (31) of the turnover shaft (3) in a penetrating way, and two ends of the lock cylinder are respectively connected with a lock cylinder driving component (42) positioned on the outer side of the fixed section (1); the lock cylinder driving component (42) is a pair of sliding blocks (42b) which are arranged outside the fixed section (1) in a sliding manner; when the lock cylinder (41) penetrates through the through groove (31) of the turnover shaft (3), the turnover shaft (3) is locked; when the sliding block (42b) slides, the lock cylinder (41) slides out from the opening of the through groove (31), and the turnover shaft (3) can freely rotate at the moment to realize the turnover of the adjusting section (2) and the rear wheel;

the front end of trip shaft (3) is equipped with draw-in groove (32) of round indent, and fixed section (1) is located trip shaft (3) and runs through department and is equipped with snap ring (11) that correspond draw-in groove (32), goes into in draw-in groove (32) through snap ring (11) card, realizes the coupling of trip shaft (3) and fixed section (1).

8. The single-leg scooter rear wheel adjustment mechanism according to claim 7, wherein said limit block assembly (43) comprises a limit block (43a), a return spring (43b), a spring mount (43e) and a push-down button (43 f); the limiting block (43a) is positioned in the fixed section (1), the front end of the limiting block is provided with an inverted buckle (43d) which is exposed from the side surface of the fixed section (1) and used for limiting the sliding of the sliding block (42b), the rear end of the limiting block is connected with a push button (43f), and the push button (43f) is embedded in two sides of the fixed section (1); the reset spring (43b) is installed on the spring fixing frame (43e), the end part of the reset spring is connected with the press button (43f), when the press button (43f) is pressed, the reverse buckle (43d) of the limiting block (43a) moves downwards to remove the limiting effect on the sliding block (42b), and the sliding block (42b) can slide back and forth at the moment to drive the lock cylinder (41) to enter and exit from the opening of the through groove (31) of the turnover shaft (3).

9. The rear wheel adjustment mechanism of the single-leg scooter as claimed in claim 3, wherein said lock cylinder (41) is a block body having one end coupled to the roll-over shaft (3) and the other end fixed to the adjustment section (2);

the lock core driving component (42) comprises a group of connecting rods (42c), a rotating shaft (42d), a shaft bracket (42e) and a shifting rod (42f), one end of the connecting rod (42c) is connected with the turning shaft (3), the other end is fixed on the rotating shaft (42d), the shaft bracket (42e) is fixed in the fixed section (1), one end of the rotating shaft (42d) is coupled on the shaft bracket (42e), the other end is exposed out of the fixed section (1), and is connected with a deflector rod (42f), the deflector rod (42f) can rotate up and down, thereby driving the rotating shaft (42d) to rotate, the turnover shaft (3) and the lock cylinder (41) are pulled through the connecting rod (42c) to realize the push-pull of the lock cylinder (41) in the fixed section (1), when the lock cylinder (41) is pushed out of the fixed section (1), the lock cylinder (41) is turned up and down by taking the turning shaft (3) as the center, then the connecting rod (42c) is pulled into the fixed section (1) to be locked.

10. The scooter rear wheel adjustment mechanism according to claim 9 wherein said lever (42f) is connected to the end of the shaft (42d) by a peg (42g) and is rotatable along the peg (42g) towards and away from the side of the fixed section (1);

the limiting assembly (43) is a limiting block (43a) arranged on the side face of the fixed section (1), and after the lock cylinder (41) is pulled into the fixed section (1), the shifting rod (42f) is limited below the limiting block (43a) and cannot rotate upwards.