CN219428293U - Multifunctional scooter - Google Patents

Abstract

The utility model provides a multifunctional scooter, comprising: rear wheel unit, front wheel unit and drive assembly, the rear wheel unit includes: seat tube, rear wheel, rear fork, coupling assembling and saddle subassembly, the front wheel unit includes: front wheels, front forks, frame tubes and handlebars. The drive assembly includes: the device comprises a limiting clamp, a containing pipe, a middle shaft, a driving sprocket and a driven sprocket, wherein the limiting clamp is detachably sleeved on the second installation section, and a limiting bolt is arranged on the limiting clamp. The side wall of the holding pipe is provided with a plug connector, and the side wall of the plug connector is provided with a limit groove. The middle shaft is rotatably arranged in the accommodating pipe, two ends of the middle shaft are provided with cranks, and the cranks are provided with foot pedals. The driving sprocket is arranged on the center shaft, the driven sprocket is arranged on the wheel shaft of the rear wheel, and the driven sprocket is connected with the driving sprocket through a chain. The multifunctional scooter provided by the utility model can be used for adjusting the use state according to actual conditions, so that different user requirements are met.

Description

Multifunctional scooter

Technical Field

The utility model belongs to the field of sports equipment, and particularly relates to a multifunctional scooter.

Background

The scooter is a common child sports equipment, when in use, a child riding on the scooter can slide forwards in a double pedal mode, and the sliding direction can be controlled through the rotation of a handlebar, so that the balance sense and the direction sense of the child are exercised.

However, with the increasing age, the learning ability of the child will be rapidly improved, and the functions of the conventional scooter are relatively single, so that most children can rapidly master the skating skills, and thus the interest of the child cannot be stimulated by the skating with the aid of the scooter, and the child is inconvenient to further learn the driving skills of other vehicles. At this time, parents need to purchase children's bicycles to replace the scooter, so that the scooter loses use value and causes unnecessary economic loss.

Disclosure of Invention

In view of the above, the present utility model aims to provide a multifunctional scooter to solve the above-mentioned technical problems.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a multi-function scooter, comprising: a rear wheel unit, a front wheel unit, and a driving assembly; the rear wheel unit includes: the seat tube comprises a first installation section, a bearing section and a second installation section which are sequentially connected, and the seat assembly is detachably arranged on the first installation section; the rear wheels are rotatably arranged in the rear forks, the connecting components and the rear forks are respectively positioned at two sides of the seat tube, and the connecting components and the rear forks are connected with the side walls of the bearing sections; the front wheel unit includes: the front wheel is rotatably arranged in the front fork, a handle shaft is arranged at the top of the front fork, the handle is arranged at the top of the handle shaft, one end of the frame tube is rotatably connected with the handle shaft, and the other end of the frame tube is connected with the connecting component;

the drive assembly includes: the device comprises a limiting clamp, a containing pipe, a middle shaft, a driving sprocket and a driven sprocket, wherein the limiting clamp is detachably sleeved on a second installation section, a limiting bolt is arranged on the limiting clamp, and the axis of the limiting bolt is perpendicular to the axis of the limiting clamp; the side wall of the accommodating pipe is provided with a plug connector, the side wall of the plug connector is provided with a limit groove for accommodating the limit bolt, when the plug connector is inserted into the second installation section, the limit groove is aligned with the limit notch, and the limit bolt enters the limit groove; the middle shaft is rotatably arranged in the accommodating pipe, two ends of the middle shaft are respectively provided with a crank, and each crank is provided with a pedal; the driving sprocket is arranged on the center shaft, the driven sprocket is arranged on the wheel shaft of the rear wheel, and the driven sprocket is connected with the driving sprocket through a chain.

Further, the plug comprises an insertion section and a blocking section, the insertion section is connected with the containing pipe through the blocking section, the outer diameter of the blocking section is equal to the outer diameter of the second installation section, the outer diameter of the insertion section is equal to the inner diameter of the second installation section, and the limiting groove is formed in the side wall of the insertion section.

Further, a plurality of positioning protrusions are arranged on the end face, close to the insertion section, of the blocking section, the positioning protrusions are annularly arranged on the periphery of the insertion section, and positioning grooves for accommodating the positioning protrusions are formed in the end face of the second installation section.

Further, deformation cuts are formed in the side walls of the first installation section and the second installation section, and the side wall of the first installation section is connected with the connecting assembly through a reinforcing pipe; and a mounting notch is arranged on the side wall of the bearing section and is aligned with the connecting assembly.

Further, the seat assembly includes: saddle body, connecting rod and connection clamp, connection clamp detachable cover is established on first installation section, the one end of connecting rod links to each other with the bottom surface of saddle body, and inside the other end inserted first installation section, and the external diameter of connecting rod equals with the internal diameter of first installation section.

Further, the inner diameter of the first mounting section is equal to the inner diameter of the second mounting section, and the axial length of the second mounting section is smaller than that of the first mounting section.

Further, the connection assembly includes: the connecting shaft, the connecting pipe and the locking pin; one end of the connecting pipe is connected with the side wall of the bearing section, an accommodating hole is formed in the end face of the connecting pipe, and the locking pin is arranged in the accommodating hole in a sliding mode; the connecting shaft comprises a connecting section, a positioning section and an inserting section which are connected in sequence, wherein the connecting section is rotatably arranged in the connecting pipe, and the inserting section is connected with the frame pipe; the external diameter of location section is greater than the external diameter of linkage segment, is equipped with two locking holes that are used for holding the locking round pin on the terminal surface that the location section is close to the linkage segment, and two locking holes are located the both sides of linkage segment respectively.

Further, an operation notch is formed in the outer side wall of the connecting pipe and is communicated with the accommodating hole, an operation screw is arranged in the operation notch, and the operation screw is connected with the side wall of the locking pin.

Further, the inside retaining pin and the reset spring of being equipped with of accommodation hole the one end that the connecting axle was kept away from to the locking pin is equipped with the holding tank, inside the holding tank was inserted to reset spring's one end, the other end and the terminal surface of retaining pin support.

Furthermore, a connecting ring is arranged in the connecting pipe, the connecting section is inserted into the connecting ring, and the connecting section is connected with the connecting ring through a bearing; the end face of the connecting section, which is far away from the positioning section, is provided with a threaded joint, the threaded joint is provided with a locking nut, and the outer diameter of the locking nut is larger than the inner diameter of the connecting ring.

Compared with the prior art, the multifunctional scooter has the following advantages:

(1) The multifunctional scooter disclosed by the utility model is characterized in that the shaft is detachably connected with the second mounting section through the accommodating pipe and the limiting clamp. After the child is skilled in grasping the sliding skill of the scooter, the parent can mount the parts such as the middle shaft, the driving chain wheel, the driven chain wheel and the chain on the scooter through the accommodating tube and the limiting clamp, so that the scooter is converted into the bicycle for the child, the replacement cost of sports equipment is reduced, and the child can learn the driving skill of the bicycle conveniently. Secondly, this device can be through the cooperation of spacing bolt, spacing incision and spacing groove, improves the axial connection reliability between holding pipe and the second installation section, avoids holding pipe and riding the in-process with the second installation section separation at child. In addition, this device is equipped with location arch and constant head tank, when holding the pipe and stepping on the running-board in turn because of child's both feet and bearing alternating load, the cooperation of location arch and constant head tank can prevent to hold the pipe and take place to rotate, further improves the connection reliability between holding pipe and the second installation section.

(2) The front wheel unit and the seat tube of the multifunctional scooter are connected through the connecting component, and when the multifunctional scooter is used, a user can overturn and lock the seat tube through the connecting component, so that the dimension specification of the scooter is matched with the dimension specification of the multifunctional scooter.

(3) According to the multifunctional scooter, the locking pin and the locking nut are arranged in the connecting assembly, the connecting pipe and the connecting shaft can be circumferentially limited through the locking pin, the seat pipe position can be conveniently locked, the connecting pipe and the connecting shaft can be axially limited through the locking nut, and the seat pipe and the frame pipe are prevented from being separated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a multi-function scooter according to an embodiment of the present utility model (assembled drive assembly state);

FIG. 2 is a schematic view of a scooter according to an embodiment of the present utility model (a state in which a driving assembly is not assembled, and a first mounting section is connected to a seat assembly);

FIG. 3 is a schematic view of a scooter according to an embodiment of the present utility model (a state in which a driving assembly is not assembled, and a second mounting section is connected to a seat assembly);

FIG. 4 is a schematic view of a receiving tube, a limit clip, and a second mounting section according to an embodiment of the present utility model;

FIG. 5 is a cut-away interior view of a connection assembly according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of a connecting shaft according to an embodiment of the present utility model.

Reference numerals illustrate:

11-a first mounting section; 111-deformation cuts; 112-reinforcing the tube; 12-a carrying section; 121-mounting cut; 13-a second mounting section; 131-limiting notch; 132-positioning grooves; 21-rear wheels; 22-rear fork; 31-front wheels; 32-front fork; 33-frame tube; 34-handle bar; 4-limiting clamp; 41-limit bolts; 5-accommodating the tube; 51-insert section; 511-a limit groove; 52-a blocking section; 521-positioning protrusions; 61-middle axis; 611-crank; 612-foot pedal; 62-driving a sprocket; 63-driven sprocket; 64-chain; 71-a saddle body; 72-connecting rods; 73-connecting a clamp; 811-a connection section; 812-positioning the segment; 813-a plug-in segment; 814-threaded joint; 82-connecting pipes; 821-receiving holes; 822-manipulating the incision; 823-operating screws; 824-blocking pins; 825-return spring; 83-locking pin; 831-locking holes; an 84-connecting ring; 85-locking nut.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

A multi-function scooter, the structure of which can be illustrated in fig. 1-6, as shown in the present embodiment comprises: rear wheel unit, front wheel unit and drive assembly. When the device is used, a user can select whether to assemble the driving assembly according to actual requirements, so that the device forms different use states, and further different use requirements of the user are met.

Specifically, the rear wheel assembly may include: the seat tube comprises a first mounting section 11, a bearing section 12 and a second mounting section 13 which are sequentially connected, the rear wheel 21 is rotatably arranged inside the rear fork 22, the connecting assembly and the rear fork 22 are respectively positioned on two sides of the seat tube, and the connecting assembly and the rear fork 22 are connected with the side wall of the bearing section 12. The front wheel assembly may include: the front wheel 31, the front fork 32, the frame pipe 33 and the handlebar 34, wherein the front wheel 31 is rotatably arranged inside the front fork 32, a handle shaft is arranged at the top of the front fork 32, the handlebar 34 is arranged at the top of the handle shaft, one end of the frame pipe 33 is rotatably connected with the handle shaft, and the other end of the frame pipe 33 is connected with the connecting component.

When the device is used by a user as a children's bicycle, the saddle assembly can be mounted on the first mounting segment 11 and the assembly of the drive assembly can be completed, resulting in the structure shown in fig. 1. In this use condition, a child may sit on the seat assembly and provide forward power to the device via the drive assembly, thereby exercising the steering skills of the bicycle. When the device is used as a scooter by a user, the driving assembly can be removed, and only the saddle assembly is installed, so that the structure shown in fig. 2 or 3 is formed. In this use state, the child can sit on the seat assembly and drive the device to slide forward in a double pedal manner, thereby exercising the sense of balance and direction of the child.

As shown in fig. 1 and 4, the driving assembly may include: limit clamp 4, holding tube 5, axis 61, drive sprocket 62 and driven sprocket 63. Wherein hold and be equipped with the bayonet joint on the lateral wall of pipe 5, when assembling, the user can insert inside the second installation section 13 with the bayonet joint to establish spacing clamp 4 detachable cover on the second installation section 13, thereby realize holding the connection between pipe 5 and the seat pipe. The central shaft 61 is rotatably arranged in the accommodating tube 5, two ends of the central shaft 61 are provided with cranks 611, and each crank 611 is provided with a pedal 612. The drive sprocket 62 is provided on the center shaft 61, the driven sprocket 63 is provided on the wheel shaft of the rear wheel 21, and the driven sprocket 63 is connected to the drive sprocket 62 by a chain 64. After the installation of the driving assembly is completed, the user riding on the device can drive the driving sprocket 62 to rotate in a mode of alternately stepping on the pedals 612 by two feet, and at the moment, the chain 64 can transmit kinetic energy to the inside of the driven sprocket 63, so that the rear wheel 21 is driven to rotate, and further forward movement of the vehicle body is realized.

In order to improve the connection reliability between the receiving tube 5 and the second mounting section 13, a limit bolt 41 may be provided on the limit clip 4, and the axis of the limit bolt 41 should be perpendicular to the axis of the limit clip 4. Correspondingly, a limit groove 511 for accommodating the limit bolt 41 is arranged on the side wall of the plug. After the user inserts the plug into the second installation section 13, the limiting groove 511 is aligned with the limiting notch 131, and the limiting bolt 41 enters the inside of the limiting groove 511 at this time, so that the plug is axially limited, and the plug is prevented from being separated from the second installation section 13 in the riding process of the user.

As shown in fig. 4, the plug connector in this embodiment may include an insertion section 51 and a blocking section 52, wherein the insertion section 51 is connected to the receiving tube 5 through the blocking section 52, the blocking section 52 has an outer diameter equal to that of the second mounting section 13, the insertion section 51 has an outer diameter equal to that of the second mounting section 13, and the limit groove 511 is provided on a sidewall of the insertion section 51. When the user performs the assembly between the plug and the second mounting section 13, since the outer diameter of the blocking section 52 is equal to the outer diameter of the second mounting section 13, the end surface of the blocking section 52 can limit the insertion depth of the plug section 51, thereby ensuring that the limit groove 511 on the plug section 51 is aligned with the limit slit 131 on the second mounting section 13.

Since the user steps on the pedals 612 at both ends of the center shaft 61 during riding, the connection portion of the plug and the second mounting section 13 will be subjected to alternating loads. In order to enhance the capability of the above-mentioned connection portion against alternating load, a plurality of positioning projections 521 may be provided on the end face of the blocking section 52 near the insertion section 51, and the plurality of positioning projections 521 may be annularly arranged on the circumferential side of the insertion section 51. Correspondingly, a positioning groove 132 for accommodating the positioning protrusion 521 is provided on the end surface of the second mounting section 13, and the positioning protrusion 521 should be inserted into the positioning groove 132 when the driving assembly is assembled.

When the connection part of the plug connector and the second mounting section 13 bears alternating load, the matching of the positioning protrusion 521 and the positioning groove 13 can limit the plug connector in the circumferential direction, so that the accommodating pipe 5 is prevented from rotating, and the connection reliability between the accommodating pipe 5 and the second mounting section 13 is improved.

To facilitate the installation of the seat assembly by a user, the seat assembly described in this embodiment includes: a seat body 71, a connecting rod 72 and a connector clip 73. Wherein one end of the connecting rod 72 is connected to the bottom surface of the saddle body 71, and the outer diameter of the connecting rod 72 is equal to the inner diameter of the first mounting segment 11. During assembly, the user can insert the connecting rod 72 into the first mounting section 11 and then removably insert the connector clip 73 onto the first mounting section 11, thereby tightening the connecting rod 72 with the connector clip 73.

When the device is used as a scooter, in order to improve the safety factor, the height of the saddle assembly should be adjusted by a user according to the user's own situation, so that the feet of the user can be laid flat on the ground when sitting on the saddle body 71. However, because the leg lengths of users in different age groups are greatly different, the adjustment of the insertion depth of the connecting rod 72 is only used for not meeting the actual adjustment requirements of the users.

To solve the above problem, the inner diameter of the first mounting section 11 should be equal to the inner diameter of the second mounting section 13 in this embodiment, and the axial length of the second mounting section 13 should be smaller than the axial length of the first mounting section 11. When the adjustment of the insertion depth of the connecting rod 72 cannot meet the actual adjustment requirement of the user, the user can turn the rear wheel unit 180 degrees through the connecting assembly, so that the device has two different use states when being used as a scooter.

As shown in fig. 2, where the first mounting section 11 is facing upward, a user may mount the seat assembly to the first mounting section 13. In this state, since the axial length of the first mounting section 13 is long, the highest adjustable height of the seat body 71 is high, and it is suitable for use by older and longer-leg users. When the device is switched to the state shown in fig. 3, the second mounting section 13 is directed upward, and the user can mount the seat assembly to the second mounting section 13. Since the second mounting section 13 is short in axial length, the lowest adjustable height of the saddle body 71 is low, and is suitable for use by a user of a small age and a short leg length.

In order to facilitate the tightening of the connecting rod 72 by the connector clip 73 in both the above-mentioned states, deformation notches 111 should be provided in the side walls of the first mounting section 11 and the second mounting section 13. In addition, since the first mounting section 11 has a long length, the side wall of the first mounting section 11 may be connected to the connection assembly through the reinforcing pipe 112 in order to enhance the structural strength of the portion.

To effect the overturning of the rear wheel unit, the connection assembly may include a connection shaft and connection tube 82, as shown in fig. 5 and 6. Wherein one end of the connecting pipe 82 can be connected with the side wall of the bearing section 12 by welding, and the connecting shaft comprises a connecting section 811, a positioning section 812 and a splicing section 813 which are sequentially connected. When the scooter is mounted, the connecting section 811 is rotatably provided inside the connecting pipe 82, and the plug section 813 is connected to the frame pipe 33, and when the user needs to switch the use state of the scooter, the rear wheel unit can be turned around with the connecting shaft as the axis.

In order to facilitate the locking of the rear wheel unit after being turned over, a receiving hole 821 should be provided on an end surface of the connection pipe 82, and a locking pin 83 which is slidable is provided inside the receiving hole 821. Correspondingly, the outer diameter of the positioning section 812 should be larger than that of the connecting section 811, two locking holes 831 are provided on the end surface of the positioning section 812 close to the connecting section 811, and the two locking holes 831 are respectively located on two sides of the connecting section 811. When the user needs to switch the use state of the scooter, the locking pin 83 should be driven to slide in a direction away from the positioning section 812, and then the rear wheel unit is driven to turn around the connecting shaft as an axis. After the user finishes the use state switching, the locking pin 83 can be driven to slide in the direction close to the positioning section 812, so that the locking pin 83 is inserted into the locking hole 831, and at the moment, the locking hole 831 and the locking pin 83 are matched to perform circumferential limiting on the rear wheel unit, so that abnormal rotation of the rear wheel unit in the use process is avoided.

Alternatively, for convenience of user operation of the locking pin 83, an operation notch 822 communicating with the receiving hole 821 may be provided on an outer side wall of the connection pipe 82, an operation screw 823 should be provided inside the operation notch 822, and the operation screw 823 is connected to a side wall of the locking pin 83. When the locking pin 83 is required to slide, the user can grasp the operating screw 83, thereby facilitating the actuation of the locking pin 83 for movement.

In addition, in order to further improve the convenience of use of the locking pin 83, a blocking pin 824 and a return spring 825 may be further provided inside the receiving hole 821. Specifically, a receiving groove may be provided at one end of the locking pin 83 away from the connection shaft, and one end of the return spring 825 should be inserted into the receiving groove, and the other end should abut against the end surface of the blocking pin 824. When the locking pin 83 moves in a direction away from the connection shaft, the return spring 825 is compressed, and when the user completes the state switching, the return spring 825 in the compressed state can drive the locking pin 83 to move in a direction close to the connection shaft, so that the locking pin 83 is quickly inserted into the locking hole 831.

In order to improve the connection reliability between the rear wheel unit and the front wheel unit, the present embodiment may further be provided with a connection ring 84 inside the connection pipe 82. In assembly, the connection section 811 should be inserted into the inside of the connection ring 84, and the connection section 811 is connected to the connection ring 84 by a bearing. Correspondingly, a threaded joint 814 can be provided on the end face of the connecting section 811 remote from the positioning section 812, a lock nut 85 can be provided on the threaded joint 814, and the outer diameter of the lock nut 85 is larger than the inner diameter of the connecting ring 84.

Because the outer diameter of the lock nut 85 is greater than the inner diameter of the connecting ring 84, when the lock nut 85 is mounted to the threaded joint 814, the engagement of the lock nut 85 with the connecting ring 84 enables an axial stop between the connecting shaft and the connecting tube 82, thereby preventing the rear wheel unit from being disengaged from the front wheel unit during use.

It should be noted that, to facilitate the installation of the blocking pin 824, the return spring 825, and the lock nut 85, an installation notch 121 aligned with the connection assembly should be provided on the sidewall of the carrier section 12.

Effects of the above scheme are described below:

the embodiment provides a multi-purpose scooter, can be according to actual need to drive assembly dismouting to possess the scooter and children bicycle two kinds of service conditions, satisfy user's multiple demand. Secondly, this device can be through the cooperation of spacing bolt, spacing incision and spacing groove, improves the axial connection reliability between holding pipe and the second installation section to can improve the anti alternating load ability between holding pipe and the second installation section through location arch and constant head tank, prevent to hold the pipe and take place to rotate. In addition, this device can realize the upset of rear wheel unit through coupling assembling to the adjustable height of saddle subassembly matches with actual demand.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A multi-function scooter, comprising: a rear wheel unit, a front wheel unit, and a driving assembly; the rear wheel unit includes: the bicycle seat comprises a seat tube, a rear wheel (21), a rear fork (22), a connecting assembly and a bicycle seat assembly, wherein the seat tube comprises a first mounting section (11), a bearing section (12) and a second mounting section (13) which are sequentially connected, and the bicycle seat assembly is detachably arranged on the first mounting section (11); the rear wheel (21) is rotatably arranged in the rear fork (22), the connecting component and the rear fork (22) are respectively positioned at two sides of the seat tube, and the connecting component and the rear fork (22) are connected with the side wall of the bearing section (12); the front wheel unit includes: the bicycle comprises a front wheel (31), a front fork (32), a frame tube (33) and a handle bar (34), wherein the front wheel (31) is rotatably arranged in the front fork (32), a handle shaft is arranged at the top of the front fork (32), the handle bar (34) is arranged at the top of the handle shaft, one end of the frame tube (33) is rotatably connected with the handle shaft, and the other end of the frame tube is connected with a connecting component;

the drive assembly includes: the device comprises a limiting clamp (4), a containing pipe (5), a middle shaft (61), a driving chain wheel (62) and a driven chain wheel (63), wherein the limiting clamp (4) is detachably sleeved on a second installation section (13), a limiting bolt (41) is arranged on the limiting clamp (4), and the axis of the limiting bolt (41) is perpendicular to the axis of the limiting clamp (4); the side wall of the accommodating pipe (5) is provided with a plug connector, the side wall of the plug connector is provided with a limit groove (511) for accommodating the limit bolt (41), when the plug connector is inserted into the second mounting section (13), the limit groove (511) is aligned with the limit notch (131), and the limit bolt (41) enters the limit groove (511); the middle shaft (61) is rotatably arranged in the accommodating pipe (5), two ends of the middle shaft (61) are provided with cranks (611), and each crank (611) is provided with a pedal (612); the driving chain wheel (62) is arranged on the center shaft (61), the driven chain wheel (63) is arranged on the wheel shaft of the rear wheel (21), and the driven chain wheel (63) is connected with the driving chain wheel (62) through a chain (64).

2. A multi-function scooter as claimed in claim 1, wherein: the plug comprises an inserting section (51) and a blocking section (52), the inserting section (51) is connected with the containing tube (5) through the blocking section (52), the outer diameter of the blocking section (52) is equal to the outer diameter of the second installation section (13), the outer diameter of the inserting section (51) is equal to the inner diameter of the second installation section (13), and the limiting groove (511) is formed in the side wall of the inserting section (51).

3. A multi-function scooter as claimed in claim 2, wherein: the end face of the blocking section (52) close to the inserting section (51) is provided with a plurality of positioning protrusions (521), the positioning protrusions (521) are annularly arranged on the periphery of the inserting section (51), and the end face of the second mounting section (13) is provided with a positioning groove (132) for accommodating the positioning protrusions (521).

4. A multi-function scooter as claimed in claim 1, wherein: deformation cuts (111) are formed in the side walls of the first installation section (11) and the second installation section (13), and the side wall of the first installation section (11) is connected with the connecting assembly through a reinforcing pipe (112); a mounting notch (121) is arranged on the side wall of the bearing section (12), and the mounting notch (121) is aligned with the connecting assembly.

5. The utility model as defined in claim 4, wherein: the seat assembly includes: saddle body (71), connecting rod (72) and connection clamp (73), connection clamp (73) detachable cover is established on first installation section (11), the one end of connecting rod (72) links to each other with the bottom surface of saddle body (71), and inside the other end inserted first installation section (11), and the external diameter of connecting rod (72) equals with the internal diameter of first installation section (11).

6. The utility model as claimed in claim 5, wherein: the inner diameter of the first mounting section (11) is equal to the inner diameter of the second mounting section (13), and the axial length of the second mounting section (13) is smaller than that of the first mounting section (11).

7. A multi-function scooter as claimed in claim 1, wherein: the connection assembly includes: a connecting shaft, a connecting pipe (82) and a locking pin (83); one end of the connecting pipe (82) is connected with the side wall of the bearing section (12), an accommodating hole (821) is formed in the end face of the connecting pipe (82), and the locking pin (83) is arranged in the accommodating hole (821) in a sliding mode; the connecting shaft comprises a connecting section (811), a positioning section (812) and a splicing section (813) which are connected in sequence, the connecting section (811) is rotatably arranged in the connecting pipe (82), and the splicing section (813) is connected with the frame pipe (33); the outer diameter of the positioning section (812) is larger than that of the connecting section (811), two locking holes (831) for accommodating the locking pins (83) are formed in the end face, close to the connecting section (811), of the positioning section (812), and the two locking holes (831) are respectively located on two sides of the connecting section (811).

8. The utility model as claimed in claim 7, wherein: an operation notch (822) is formed in the outer side wall of the connecting pipe (82), the operation notch (822) is communicated with the accommodating hole (821), an operation screw (823) is arranged in the operation notch (822), and the operation screw (823) is connected with the side wall of the locking pin (83).

9. The utility model as claimed in claim 7, wherein: the inside of accommodation hole (821) is equipped with and blocks round pin (824) and reset spring (825) locking round pin (83) keep away from the one end of connecting axle and are equipped with the holding tank, the inside of holding tank is inserted to one end of reset spring (825), and the other end offsets with the terminal surface that blocks round pin (824).

10. The utility model as claimed in claim 7, wherein: the connecting pipe (82) is internally provided with a connecting ring (84), the connecting section (811) is inserted into the connecting ring (84), and the connecting section (811) is connected with the connecting ring (84) through a bearing; the end face of the connecting section (811) far away from the positioning section (812) is provided with a threaded joint (814), the threaded joint (814) is provided with a locking nut (85), and the outer diameter of the locking nut (85) is larger than the inner diameter of the connecting ring (84).