CN219584379U

CN219584379U - Folding electric trailer with retractable movable wheels

Info

Publication number: CN219584379U
Application number: CN202321386183.6U
Authority: CN
Inventors: 罗海成; 李秀清
Original assignee: Shenzhen Yunrui Iot Technology Co ltd
Current assignee: Shenzhen Yunrui Iot Technology Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-08-25
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a foldable electric trailer with retractable movable wheels, which comprises: folding the vehicle body and the control assembly; the trailing end bottom of folding automobile body is installed the follower, and folding automobile body's front end is connected with at least one flexible loop bar, and flexible loop bar stretches out the end and is connected with accuse to the subassembly, and accuse is connected with drive assembly to the below of subassembly, and accuse is connected with drive assembly transmission to the subassembly, and control assembly locates on folding automobile body, and drive assembly and accuse are to the subassembly and are connected with the control assembly electricity respectively. By adopting the design, the telescopic sleeve rod is connected to the front end of the folding cart body in a rotating way, the extending driving direction control component and the driving component of the telescopic sleeve rod move forward, the manned function is realized, the telescopic sleeve rod is not required to be retracted during use, the occupied space is reduced, the driving and dragging down-conversion can be freely carried out according to the use requirement, the operation is simple, the use is convenient, the brand-new folding electric trailer is realized, the novel folding electric trailer has multiple functions, the attractive force is high, and the product competitiveness is improved.

Description

Folding electric trailer with retractable movable wheels

Technical Field

The utility model relates to the technical field of folding trailers, in particular to a folding electric trailer with retractable movable wheels.

Background

The foldable trailer is a foldable and draggable carrying vehicle, is convenient to store and store due to simple use and can be widely applied to outdoor activities or short-distance transportation when carrying things.

When the traditional trailer is used, the manual dragging is needed, time and labor are wasted, and particularly, the traditional trailer is inconvenient to carry on an uphill; for this reason, the prior art has still designed a helping hand trailer, and patent number is CN202220922980.0 (helping hand trailer) it is through setting up electric wheel and controlling means on the automobile body, and electric helping hand effect when realizing the trailer promotes laborsaving, the convenience of trailer when using, and this kind of scheme still has the drawback, though can save strength to a certain extent, but its use still needs the manpower to pull just, and current trailer does not possess manned, the function of driving mostly.

Accordingly, there is a need to design a collapsible electric trailer with telescopically movable wheels that overcomes one or more of the above-described deficiencies of the prior art.

Disclosure of Invention

The technical scheme adopted by the utility model for achieving the technical purpose is as follows: a folding electric trailer with telescopically movable wheels, comprising: folding the vehicle body and the control assembly; the folding trolley is characterized in that a follower wheel is mounted at the bottom of the tail end of the folding trolley body, at least one telescopic sleeve rod is connected to the front end of the folding trolley body, a direction control component is connected to the extending end of the telescopic sleeve rod, a driving component is connected to the lower side of the direction control component, the direction control component is in transmission connection with the driving component, the direction control component controls the driving component to turn, the direction control component and the driving component are both located at the front end of the folding trolley body, a telescopic limiting device is arranged at the front end of the telescopic sleeve rod and used for limiting the telescopic sleeve rod, the telescopic sleeve rod is used for synchronously driving the direction control component and the driving component to translate away from the direction of the folding trolley body when extending, the control component is arranged on the folding trolley body, and the driving component and the direction control component are respectively and electrically connected.

In a preferred embodiment, two telescopic loop bars are provided, each of which is located at the front end of the folding bicycle body, and each of the telescopic loop bars includes: an outer rod and an inner rod; the inner rod is arranged in the outer rod in a sliding mode, one end of the inner rod is connected with the steering assembly in a rotating mode, a connecting seat is fixedly connected to the outer end of the front end of the outer rod, the connecting seat is connected with the front end of the folding car body in a rotating mode, and the outer rod is connected with the steering assembly in a rotating mode through the connecting seat relative to the folding car body.

In a preferred embodiment, the bottoms of two sides of the folding bicycle body are fixedly provided with first fixing pieces for fixing the telescopic sleeve rod, the positions of the first fixing pieces correspond to the length of the telescopic sleeve rod, the tops of two sides of the folding bicycle body are rotatably provided with second fixing pieces for fixing the telescopic sleeve rod, and the positions of the second fixing pieces correspond to the length of the telescopic sleeve rod, which corresponds to the length of the folding bicycle body after the telescopic sleeve rod rotates by a preset angle.

In a preferred embodiment, the first fixing member and the second fixing member are both provided with a fixing groove, one end of the outer rod, which is far away from the steering assembly, is provided with an extension block, the extension block is adapted to the fixing groove, and the extension block is further provided with a sleeve rod limiting device for limiting the telescopic sleeve rod to rotate.

In a preferred embodiment, the drive assembly comprises: a driving wheel; the driving wheel is provided with two, two be connected with the driving part between the driving wheel, accuse is to the subassembly with the driving part rotates to be connected for drive two the driving wheel synchronous rotation, the driving part includes first transfer line and locates first transfer line both ends and respectively with the second transfer line that first transfer line rotated to be connected, two the second transfer line is kept away from the one end rotation of first transfer line is connected with the third transfer line, the third transfer line is kept away from the one end of second transfer line is rotated with the corresponding driving wheel and is connected.

In a preferred embodiment, the steering assembly comprises: the control rod, the bottom cover of control rod is equipped with coupling assembling, coupling assembling be used for with flexible loop bar is connected and is supported the control rod, the control rod can be relative coupling assembling rotates, drive assembly be located coupling assembling's below and with coupling assembling's bottom surface rotates to be connected, the bottom surface of control rod still is connected with the swing arm, the swing arm with drive assembly rotates to be connected, the control rod passes through the swing arm drives drive assembly rotates, still the activity is equipped with the steering column in the control rod.

In a preferred embodiment, the connection assembly comprises: the folding piece is arranged on the outer side of the control rod, two ends of the folding piece are respectively and rotatably connected with a first connecting rod, one ends of the two first connecting rods, which are far away from the folding piece, are respectively and rotatably connected with a second connecting rod, the driving assembly is rotatably connected with the second connecting rod, the side wall of the second connecting rod is rotatably connected with the telescopic sleeve rod, and the folding piece is further provided with a connecting limiting device for limiting the rotation of the first connecting rods.

In a preferred embodiment, the connection limiting device comprises: the middle part of the pressing rod is provided with a pressing block, the pressing rod is arranged in the middle part of the folding piece in a sliding manner, and the top of the pressing rod is detachably connected with a pressing handle; limiting pins are respectively arranged in the two ends of the folding piece in a sliding mode, the pressing rods are located between the two limiting pins, one ends, opposite to the limiting pins, of the pressing rods are inclined planes, reset springs are respectively arranged in the two limiting pins, the limiting pins move towards the direction where the pressing rods are located through the reset springs, and pin holes which correspond to the limiting pins and are matched with the limiting pins are formed in the ends, connected with the folding piece, of the first connecting rods.

In a preferred embodiment, each of the second connecting rods is movably provided with a rotation limiting device, and the rotation limiting device includes: the device comprises a rotation limiting pin block, an unlocking feeler lever and a rotation limiting reset spring, wherein the head end of the rotation limiting pin block penetrates out of the side wall, connected with the telescopic sleeve rod, of the second connecting rod, a guide post is arranged at the tail end of the rotation limiting pin block, the rotation limiting reset spring is arranged on the outer side of the guide post, the unlocking feeler lever is L-shaped, one end of the unlocking feeler lever is fixedly connected with the rotation limiting pin block, the other end of the unlocking feeler lever extends out of the second connecting rod, a position avoiding hole is formed in the head end of the rotation limiting pin block, and when the second connecting rod and the telescopic sleeve rod are in a horizontal state, the rotation limiting pin block stretches into the telescopic sleeve rod under the top force of the rotation limiting reset spring and limits the rotation of the telescopic sleeve rod and the second connecting rod through the cooperation of the telescopic sleeve rod.

In a preferred embodiment, the bottoms of two sides of the front end of the folding bicycle body are respectively provided with an inserting block, and each second connecting rod is provided with an inserting hole at a position opposite to the inserting block.

In a preferred embodiment, the steering rod is exposed at the top outside the control rod and is in a T shape, two holding rods are respectively connected to the two ends of the top of the steering rod in a rotating mode, a first sleeve is respectively arranged on the outer sides of one ends of the two holding rods connected with the steering rod in a sliding mode, a plurality of control keys are arranged on the top surface of the steering rod, the control keys are electrically connected with the control assembly, and a first limiting device is arranged on the outer sides of the top of the control rod and used for limiting the sliding of the steering rod.

In a preferred embodiment, a display screen is further arranged on the surface, facing the folding bodywork, of the top of the steering rod, and the display screen is electrically connected with the control assembly.

In a preferred embodiment, the two holding rods are provided with extension parts extending upwards and vertically at the ends far away from the connection with the direction rod, wherein a second sleeve is slidably arranged on one extension part, and a power-assisted shifting key is arranged on the other extension part and is electrically connected with the control assembly.

In a preferred embodiment, both the grips are provided with a grip, one of the grips is rotatably connected to the grip and electrically connected to the control assembly, and the grip rotates about the grip as a rotation center for controlling the speed of the folding bicycle body.

In a preferred embodiment, the bottom of the control rod is rotatably connected with a turning rod, the swing arm is fixedly connected with the bottom of the turning rod, the connecting component is sleeved outside the turning rod, and a sliding sleeve is arranged outside the control rod in a sliding manner.

In a preferred embodiment, the control assembly comprises: the device comprises a controller and at least one power supply electrically connected with the controller, wherein the driving component and the direction control component are respectively and electrically connected with the controller.

The beneficial effects of the utility model are as follows: through rotating the flexible loop bar of connection at the front end of folding automobile body, the extension through flexible loop bar drives accuse to subassembly and drive assembly antedisplacement, realizes manned function, withdraws flexible loop bar when not needing to use, reduces occupation space, can be according to the free driving of user demand and the conversion of dragging down, easy operation, convenient to use realizes a brand-new folding electric trailer, has multiple form multiple functions, and the novelty is high, and the appeal is big, promotes product competitiveness.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the folding bicycle body of the present utility model;

FIG. 3 is a schematic view of the telescopic boom of the present utility model;

FIG. 4 is an enlarged schematic view of the utility model at A in FIG. 3;

FIG. 5 is a schematic diagram of a driving assembly according to the present utility model;

FIG. 6 is a schematic view of a connection assembly according to the present utility model;

FIG. 7 is a schematic view of a connection limiting device according to the present utility model;

FIG. 8 is an exploded view of the steering assembly of the present utility model;

FIG. 9 is a schematic view of another state of the steering assembly of the present utility model;

FIG. 10 is a schematic view of the steering assembly and the drive assembly of the present utility model in a collapsed state;

FIG. 11 is a schematic diagram of a towing situation in accordance with the present utility model;

FIG. 12 is a schematic view of the whole folding state of the present utility model;

FIG. 13 is a schematic block diagram of an electrical connection of the present utility model;

fig. 14 is a functional block diagram of a control box of the present utility model.

In the figure:

10. folding the vehicle body; 11. a follower wheel; 12. a telescopic loop bar; 121. an outer rod; 122. an inner rod; 123. a telescopic limiting device; 124. a connecting seat; 125. an extension block; 13. a first fixing member; 14. a second fixing member; 141. a fixing groove; 15. a loop bar limiting device; 16. inserting blocks;

20. a control assembly; 21. a controller; 22. a power supply;

30. a drive assembly; 31. a driving wheel; 32. a fork bracket; 33. a wheel fork shaft; 34. a transmission arm;

40. a transmission member; 41. a first transmission rod; 42. a second transmission rod; 43. a third transmission rod; 44. a connecting screw;

50. a direction control assembly; 51. a control lever; 52. swing arms; 521. a chute; 53. a steering lever; 531. a grip; 532. a first sleeve; 533. a control key; 534. a first limiting device; 535. a display screen; 536. an extension; 537. a second sleeve; 538. a power-assisted shifting key; 539. a handle sleeve; 54. a connection assembly; 541. a folding member; 542. a first connecting rod; 543. a second connecting rod; 544. a jack; 55. a pin hole; 56. turning the rod; 57. a sliding sleeve; 58. a cavity; 59. a connecting lug;

60. Connecting a limiting device; 61. pressing a pressing rod; 62. extruding a block; 63. pressing the handle; 64. a limiting pin; 65. a return spring;

70. a rotation limiting device; 71. a rotation limiting pin block; 72. unlocking the feeler lever; 73. a guide post; 74. a rotation limiting return spring; 75. and a clearance hole.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled" and "mounted" should be interpreted broadly, and for example, "coupled" may or may not be detachably coupled; may be directly connected or indirectly connected through an intermediate medium. In addition, "communication" may be direct communication or may be indirect communication through an intermediary. Wherein, "fixed" means that the relative positional relationship is not changed after being connected to each other. References to orientation terms, such as "inner", "outer", "top", "bottom", etc., in the embodiments of the present utility model are merely to refer to the orientation of the drawings and, therefore, the use of orientation terms is intended to better and more clearly illustrate and understand the embodiments of the present utility model, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present utility model.

In embodiments of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the embodiment of the present utility model, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

As shown in fig. 1 to 14, the present utility model provides a foldable electric scooter with retractable wheels, comprising: a folding car body 10, a control assembly 20; the foldable bicycle is characterized in that a follower wheel 11 is arranged at the bottom of the tail end of the foldable bicycle body 10, at least one telescopic loop rod 12 is connected to the front end of the foldable bicycle body 10, a direction control assembly 50 is connected to the extending end of the telescopic loop rod 12, a driving assembly 30 is connected to the lower portion of the direction control assembly 50, the direction control assembly 50 is in transmission connection with the driving assembly 30, the direction control assembly 50 controls the driving assembly 30 to turn, the direction control assembly 50 and the driving assembly 30 are both positioned at the front end of the foldable bicycle body 10, a telescopic limiting device 123 is arranged at the front end of the telescopic loop rod 12 and used for limiting telescopic motion of the telescopic loop rod 12, the direction control assembly 50 and the driving assembly 30 are synchronously driven to translate away from the foldable bicycle body 10 when the telescopic loop rod 12 extends, the control assembly 20 is arranged on the foldable bicycle body 10, and the driving assembly 30 and the direction control assembly 50 are respectively and electrically connected with the control assembly 20;

specifically, as shown in fig. 1, the folding cart body 10 is a foldable cart in the market, the rear end of the folding cart body 10 is provided with a follower wheel 11, the follower wheel 11 is a fixed wheel, the follower wheel cannot horizontally rotate, the front end of the folding cart body 10 is rotationally connected with a telescopic sleeve rod 12, the extending end of the telescopic sleeve rod 12 is connected with a direction control assembly 50, the telescopic sleeve rod 12 can drive the direction control assembly 50 to move away from the folding cart body 10 when extending, a driving assembly 30 is connected below the direction control assembly 50, the driving assembly 30 is used for driving the folding cart body 10 to advance or retract, the direction control assembly 50 is used for controlling the direction of the driving assembly 30 so as to realize direction control, the driving assembly 30 moves along with the translation of the direction control assembly 50 relative to the folding cart body 10, when a person is required to carry or drive, the telescopic sleeve rod 12 can be horizontally arranged, then the telescopic sleeve rod 12 extends out, the direction control assembly 50 and the driving assembly 30 is driven to translate away from the folding cart body 10 until the limit position, and then the telescopic sleeve rod 12 is fixed through a telescopic limiting device 123, so that when the user is free from being influenced by the normal driving force, and the user can not stand on the folding cart body when the user is driven; wherein, in order to improve the driving comfort, a seat board can be arranged at the front end of the folding bicycle body 10, a user can sit on the seat board when using the folding bicycle, and steps on the telescopic loop bar 12 by feet; when the driving function is not used, the seat plate can be detached, the telescopic limiting device 123 is pulled up, the part of the telescopic sleeve rod 12 extending out is retracted, the direction control assembly 50 and the driving assembly 30 are driven to move back, the telescopic limiting device 123 is put down next to the front end of the folding car body 10, and the telescopic sleeve rod 12 is fixed, so that the towing can be carried out at the moment; wherein the driving assembly 30 is controlled to operate by the control assembly 20, and the control assembly 20 receives a control command sent by the control assembly 50 to control the driving assembly 30 to operate.

Further, in this embodiment, two telescopic rods 12 are provided and are respectively located at the front ends of the folding bodywork 10, and each telescopic rod 12 includes: an outer rod 121, an inner rod 122; the inner rod 122 is slidably disposed in the outer rod 121, one end of the inner rod 122 is rotatably connected with the steering assembly 50, a connecting seat 124 is fixedly connected to the outer end of the front end of the outer rod 121, the connecting seat 124 is rotatably connected to the front end of the folding bicycle body 10, and the outer rod 121 is rotatably connected to the folding bicycle body 10 and the steering assembly 50 via the connecting seat 124;

specifically, as shown in fig. 1 and 3, two telescopic loop bars 12 are provided, two telescopic loop bars 12 are respectively located at two bottoms of the front end of the folding bicycle body 10, one end of each telescopic loop bar 12 is located at a corner of the front end of the folding bicycle body 10, the other end is located in the middle of the folding bicycle body 10, and each telescopic loop bar 12 includes: an outer rod 121, an inner rod 122; the inner rod 122 is slidably arranged in the outer rod 121, the outer side of the front end of the outer rod 121 is fixedly connected with an L-shaped connecting seat 124, the connecting seat 124 is rotationally connected with the corner of the front end of the folding vehicle body 10 through a rotating shaft, so that the whole of the telescopic sleeve rod 12 can rotate by taking the front end of the telescopic sleeve rod 12 as a rotating center, the folding vehicle body 10 is not limited by the length of the telescopic sleeve rod 12 when being folded, the connecting seat 124 can also play a role in supporting the front end of the telescopic sleeve rod 12, and when the inner rod 122 extends to a limiting position relative to the outer rod 121, the tail end of the inner rod 122 is positioned in the front end of the outer rod 121, namely in the supporting range of the connecting seat 124, the connecting seat 124 also plays a role in supporting the inner rod 122, the supporting force is improved, and the stability of the telescopic sleeve rod 12 for carrying people is ensured; in order to avoid affecting the rotation of the telescopic loop bar 12, the front end of the inner bar 122 is rotationally connected with the steering assembly 50, and when the outer bar 121 rotates relative to the folding car body 10, the inner bar 122 is driven to rotate relative to the steering assembly 50, so that the outer bar 121 can smoothly rotate and the steering assembly 50 is not driven to synchronously rotate.

Further, first fixing pieces 13 for fixing the telescopic loop bars 12 are fixedly arranged at the bottoms of the two sides of the folding bicycle body 10, the positions of the first fixing pieces 13 correspond to the length of the telescopic loop bars 12, second fixing pieces 14 for fixing the telescopic loop bars 12 are rotatably arranged at the tops of the two sides of the folding bicycle body 10, and the positions of the second fixing pieces 14 correspond to the length of the telescopic loop bars 12 which are rotated by a preset angle relative to the folding bicycle body 10;

specifically, as shown in fig. 2, the stability of the telescopic loop bar 12 is improved, a first fixing piece 13 is respectively and fixedly arranged in the middle of the bottoms of two sides of the folding vehicle body 10, the position of the first fixing piece 13 corresponds to the length of the telescopic loop bar 12 when the telescopic loop bar 12 is horizontally placed, so that the first fixing piece 13 and the tail end of the telescopic loop bar 12 can be matched together to fix the telescopic loop bar 12, and the telescopic loop bar 12 is prevented from rotating; the second fixing members 14 are rotatably connected to the top of the two sides of the folding cart body 10, and the position of the second fixing member 14 corresponds to the length of the telescopic loop bar 12, and it should be noted that the position of the second fixing member 14 corresponds to the length of the telescopic loop bar 12 after rotating by a predetermined angle relative to the folding cart body 10, that is, the second fixing member 14 is used for fixing the telescopic loop bar 12 in the folded state, and the telescopic loop bar 12 is matched with the second fixing member 14 to achieve fixation after rotating by a predetermined angle relative to the folding cart body 10 in the position of the second fixing member 14.

It should be noted that, the specific position of the second fixing member 14 may be shown in fig. 2, so that the telescopic loop bar 12 does not limit the folding of the folding bicycle body 10.

Further, the first fixing member 13 and the second fixing member 14 are both provided with a fixing slot 141, one end of the outer rod 121, which is far away from the direction control assembly 50, is provided with an extension block 125, the extension block 125 is adapted to the fixing slot 141, and the extension block 125 is further provided with a rod limiting device 15 for limiting the rotation of the telescopic rod 12;

specifically, the first fixing piece 13 and the second fixing piece 14 are provided with fixing grooves 141, and meanwhile, the tail end of the outer rod 121 is provided with an extension block 125, when the outer rod 121 is horizontally placed, the extension block 125 is positioned in the fixing groove 141 of the first fixing piece 13, the rotation of the outer rod 121 is limited through the fixing groove 141, and meanwhile, the tail end of the outer rod 121 can be supported; when the outer rod 121 is inclined, the extension block 125 is positioned in the fixing groove 141 of the second fixing piece 14, the movement of the outer rod 121 is limited by the fixing groove 141, and in order to realize the fixed connection between the outer rod 121 and the first fixing piece 13 and the second fixing piece 14, the extension block 125 is also provided with a loop bar limiting device 15, and the loop bar limiting device 15 is preferably a bayonet lock with a spring inside and a pull ring at the end part, so that the bayonet lock is convenient to install, simple to use and low in cost; when the extension block 125 is located in the fixing groove 141, the loop bar limiting device 15 can form a fixed connection with the first fixing member 13 or the second fixing member 14 to further limit the rotation of the outer rod 121, wherein the second fixing member 14 is rotatably disposed to better cooperate with the extension block 125.

Further, in the present embodiment, the driving assembly 30 includes: a driving wheel 31; the driving wheels 31 are provided with two driving members 40, a direction control assembly 50 is rotatably connected with the driving members 40 and is used for driving the two driving wheels 31 to rotate synchronously, the driving members 40 comprise a first driving rod 41 and second driving rods 42 which are arranged at two ends of the first driving rod 41 and are respectively rotatably connected with the first driving rod 41, one ends of the two second driving rods 42, far away from the first driving rod 41, are rotatably connected with a third driving rod 43, and one ends of the third driving rods 43, far away from the second driving rods 42, are rotatably connected with the corresponding driving wheels 31;

specifically, as shown in fig. 5, the driving assembly 30 includes two driving wheels 31 and a transmission member 40 disposed between the two driving wheels 31, a fork bracket 32 is disposed at an outer side of the driving wheels 31, a fork shaft 33 is disposed at a top of the fork bracket 32, the fork shaft 33 is rotationally connected with the steering assembly 50, the driving wheels 31 rotate horizontally relative to the steering assembly 50 through the fork shaft 33, and a horizontally extending transmission arm 34 is disposed at a top of a surface of the fork bracket 32 facing away from the folding body 10; the transmission member 40 includes: a first transmission lever 41, a second transmission lever 42, a third transmission lever 43; the two second transmission rods 42 and the two third transmission rods 43 are respectively arranged, the two ends of the first transmission rod 41 are respectively connected with the second transmission rod 42 in a rotating way through a rotating shaft, one ends of the two second transmission rods 42 far away from the first transmission rod 41 are respectively connected with the third transmission rod 43 in a rotating way through a rotating shaft, and one ends of the two third transmission rods 43 far away from the second transmission rod 42 are respectively connected with the corresponding transmission arms 34 in a rotating way, wherein the first transmission rod 41, the second transmission rod 42 and the third transmission rod 43 can rotate vertically, and the first transmission rod 41 is connected with the direction control assembly 50 in a rotating way; when the first transmission rod 41, the second transmission rod 42 and the third transmission rod 43 are in a horizontal state, the horizontal rotation of the steering assembly 50 drives the first transmission rod 41 to move left and right, drives the second transmission rod 42 and the third transmission rod 43 to move left and right, and the third transmission rod 43 drives the transmission arm 34 to swing left or right, so that the fork bracket 32 is driven to rotate around the fork shaft 33, and further drives the two driving wheels 31 to rotate left and right; when the first transmission rod 41 receives an upward force, the second transmission rod 42 can be driven to rotate vertically relative to the third transmission rod 43. Wherein the follower wheel 11 of the folding car body 10 can also be replaced by a driving wheel 31 according to the requirement.

It should be noted that, since the second transmission rod 42 needs to rotate relative to the first transmission rod 41 and the third transmission rod 43, both ends of the second transmission rod 42 are curved so that the second transmission rod 42 can rotate, but in order to avoid the sinking between the second transmission rod 42 and the first transmission rod 41 and the third transmission rod 43, one end of the second transmission rod 42 connected to the first transmission rod 41 and the third transmission rod 43 is provided with a rounded corner, respectively, wherein the rounded corner is provided on only the upper side or the lower side of each end of the second transmission rod 42, and the rounded corner is located at a position corresponding to the direction of rotation based on the horizontal, if the second transmission rod 42 rotates upward relative to the third transmission rod 43 in the horizontal state, the rounded corner is located at the upper side, and the lower side is a corner, so that the sinking is avoided by the limitation of the corner, wherein the rounded corner positions of both ends of the second transmission rod 42 are opposite, if the second transmission rod 42 rotates relative to the first transmission rod 41 and the third transmission rod 43, the rounded corner is located at the upper side, and the rounded corner is located at the upper side, if the second transmission rod 42 rotates relative to the lower side.

Further, in this embodiment, the direction control assembly 50 includes: the control rod 51 is sleeved with a connecting component 54 at the bottom of the control rod 51, the connecting component 54 is used for being connected with the telescopic sleeve rod 12 and supporting the control rod 51, the control rod 51 can rotate relative to the connecting component 54, the driving component 30 is located below the connecting component 54 and is rotationally connected with the bottom surface of the connecting component 54, the bottom end surface of the control rod 51 is further connected with a swing arm 52, the swing arm 52 is rotationally connected with the driving component 30, the control rod 51 drives the driving component 30 to rotate through the swing arm 52, and a direction rod 53 is further movably arranged in the control rod 51;

specifically, the bottom outside of the control rod 51 is provided with a connecting component 54, two ends of the connecting component 54 are respectively connected with an inner rod 122 of the telescopic sleeve rod 12 in a rotating way, an included angle of 90 degrees is formed between the connecting component 54 and the telescopic sleeve rod 12, the control rod 51 is vertically positioned in front of the folding car body 10 through the support of the connecting component 54, meanwhile, the control rod 51 can rotate in the horizontal direction relative to the connecting component 54 so as to drive a swinging arm 52 at the bottom of the control rod 51 to horizontally swing, a sliding groove 521 is formed in the end part of the swinging arm 52, meanwhile, the bottom surface of the first transmission rod 41 is provided with a connecting screw 44, the swinging arm 52 is rotationally connected with the connecting screw 44 of the first transmission rod 41 through the sliding groove 521, the connecting screw 44 can slide in the sliding groove 521 so that the swinging arm 52 can drive the first transmission rod 41 to translate in the corresponding direction during horizontal swinging, the first transmission rod 41 drives two driving wheels 31 to rotate in the corresponding direction, the control of the direction is realized, a direction rod 53 is also telescopically provided with a direction rod 53 in the control rod 51, and the direction rod 53 can drive the control rod 51 to rotate so as to realize the rotation control of the direction rod 53.

Further, the connection assembly 54 includes: the folding piece 541 is disposed at the outer side of the control rod 51, two ends of the folding piece 541 are respectively rotatably connected with a first connecting rod 542, one end of each of the two first connecting rods 542, which is far away from the folding piece 541, is respectively rotatably connected with a second connecting rod 543, the driving assembly 30 is rotatably connected with the second connecting rod 543, a side wall of the second connecting rod 543 is rotatably connected with the telescopic sleeve rod 12, and a connection limiting device 60 for limiting the rotation of the first connecting rod 542 is further disposed on the folding piece 541;

specifically, the folding member 541 is sleeved outside the bottom of the control rod 51, the folding member 541 and the control rod 51 can be connected together through a bearing, the control rod 51 can be prevented from moving vertically relative to the folding member 541 while the control rod 51 is not prevented from rotating relative to the folding member 541, the bottom of the control rod 51 passes through the folding member 541, two ends of the folding member 541 are respectively connected with a first connecting rod 542 through rotation of a rotating shaft, one ends of the two first connecting rods 542, which are far away from the folding member 541, are respectively connected with a second connecting rod 543 through rotation of a rotating shaft, one ends of the second connecting rods 543, which are far away from the first connecting rods 542, are respectively connected with an inner rod 122 through rotation of a rotating shaft, and meanwhile, the two driving wheels 31 are respectively connected with the two second connecting rods 543 through rotation of a fork shaft 33, when the control rod 51 is subjected to upward force, the folding member 541 is driven to move vertically relative to the folding member 541, and the second connecting rods 543 are horizontally connected with the inner rod 122 by 90 degrees and are simultaneously limited by the driving wheels 31, so that the second connecting rods 543 cannot rotate relative to the first connecting rods 542; when the control rod 51 rises, the swing arm 52 drives the first transmission rod 41 to rise, so that the second transmission rod 42 vertically rotates relative to the first transmission rod 41, the vertical rotation of the second transmission rod 42 and the first connection rod 542 drives the two telescopic loop bars 12 to be mutually close, the folding car body 10 is folded at the moment, finally the two telescopic loop bars 12 are rotated to be inclined relative to the folding car body 10, the folding car body 10 can be folded from front, back, left and right, and the folding is completed, because the folding piece 541 and the first connection rod 542 are freely rotationally connected, in order to avoid jumping caused by the driving of the control rod 51 in the using process, the normal use is influenced, the connecting limiting device 60 is arranged in the middle of the folding piece 541, and the connecting limiting device 60 is used for limiting the rotation of the first connection rod 542 relative to the folding piece 541, so that the first connection rod 542 can be prevented from rotating when needed, and the use safety and the use experience are ensured.

It should be noted that, because the first connecting rod 542 is rotationally connected to the folding member 541 and the second connecting rod 543, in order to avoid the sinking condition of the first connecting rod 542 in the normal use condition, rounded corners are respectively disposed at two ends of the folding member 541, and only an upper side or a lower side of each end of the folding member 541 is disposed with the rounded corners, and the positions of the rounded corners are related to the rotation direction of the first connecting rod 542, if the first connecting rod 542 rotates downward relative to the folding member 541 in the horizontal state, the rounded corners of the end are located at the lower side, and the first connecting rod 542 rotates upward relative to the second connecting rod 543 in the horizontal state, so that the rounded corners of the end are located at the upper side. The rounded corners may be disposed at two ends of the first connecting rod 542 or disposed on the folding member 541 and the second connecting rod 543, respectively.

Further, the connection limiting device 60 includes: a pressing rod 61, wherein a pressing block 62 is arranged in the middle of the pressing rod 61, the pressing rod 61 is slidably arranged in the middle of the folding piece 541, and a pressing handle 63 is detachably connected to the top of the pressing rod 61; limiting pins 64 are slidably arranged in two ends of the folding member 541, the pressing rod 61 is located between the two limiting pins 64, opposite ends of the two limiting pins 64 are inclined planes, return springs 65 are respectively arranged in the two limiting pins 64, the limiting pins 64 move towards the direction of the pressing rod 61 through the return springs 65, and pin holes 55 which correspond to and are matched with the limiting pins 64 are formed in one end, connected with the folding member 541, of the two first connecting rods 542;

Specifically, the connection limiting device 60 is disposed on a side of the control rod 51 facing away from the folding body 10, a receiving cavity (not shown in the figure) is formed in the middle of the folding member 541, a pressing rod 61 is slidably disposed in the receiving cavity, the top of the pressing rod 61 is located outside the folding member 541, a pressing handle 63 is connected to the top of the pressing rod 61 through a fastener such as a screw, so that a user can conveniently press the pressing rod from the outside, an integrally formed pressing block 62 is further disposed in the middle of the pressing rod 61, the pressing block 62 moves up and down in the receiving cavity along with the vertical movement of the pressing rod 61, limiting pins 64 are slidably disposed in two ends of the folding member 541, the pressing rod 61 is located between the two limiting pins 64, opposite sides of the two limiting pins 64 are inclined surfaces inclined upwards respectively, and when the pressing block 62 moves downwards, two ends of the pressing block 62 are in contact with one end of the inclined surface and press the limiting pins 64, and the limiting pins 64 are extruded outwards of the folding member 541 through the gradient of the inclined surface; meanwhile, a pin hole 55 matched with the limiting pin 64 is respectively formed in the middle of one end of the two first connecting rods 542 and the folding piece 541 in a rotating way, when the two limiting pins 64 are extruded outwards by the extrusion block 62, the two limiting pins 64 are inserted into the pin hole 55, so that the folding piece 541 and the first connecting rods 542 are fixed together through the limiting pins 64, the first connecting rods 542 are prevented from rotating and arching relative to the folding piece 541 when not needed, the first connecting rods 542 and the folding piece 541 are rotationally connected through rotating shafts, in order to prevent the rotating shafts from forming movement interference on the limiting pins 64, slotted holes are formed in the limiting pins 64, and the rotating shafts are positioned in the slotted holes and can slide in the slotted holes, so that the limiting pins 64 can move between the folding piece 541 and the first connecting rods 542 without being limited by the rotating shafts; in order to improve the use convenience of the connection limiting device 60, two limiting pins 64 are respectively provided with a reset spring 65, one end of each reset spring 65 is connected with each limiting pin 64, and the other end of each reset spring 65 is connected with a rotating shaft, so that the limiting pins 64 can be pushed and retracted into the folding piece 541 under the acting force of the reset springs 65 after the extrusion of the extrusion blocks 62 is lost, and the first connecting rod 542 can be rotated at the moment to be separated from the plugging state with the first connecting rod 542, and meanwhile, the next connection is facilitated.

It should be noted that, when the extrusion block 62 moves down to the limit position, the contact with the limiting pin 64 is not separated, so that the limiting pin 64 is prevented from being influenced by the reset spring 65 after the limit of the extrusion block 62 is lost, so that the interval distance between the two limiting pins 64 is shorter, the extrusion block 62 is positioned below the two limiting pins 64, the situation that the pressing rod 61 cannot be pulled up occurs, preferably, when the extrusion block 62 descends to the limit position, the end parts of the two limiting pins 64 are propped against the top of the side wall of the extrusion block 62, so that the contact distance between the limiting pin 64 and the extrusion block 62 is prolonged when the extrusion block 62 ascends, and the situation that the pressing rod 61 ascends due to vibration and the limiting pin 64 loses the limit of the extrusion block 62 and breaks away from the pin hole 55 is reduced; meanwhile, a rod cover is installed at the top of the accommodating cavity through a fastener such as a screw, after the pressing rod 61 is placed in the accommodating cavity, the pressing rod 61 is prevented from being separated from the accommodating cavity through the rod cover, and the folding piece 541 is integrally formed, so that the folding piece 541 is not limited by the spring when the rotating shaft is placed, and mounting slots (not shown in the figure) are respectively formed at the tops of the two ends of the folding piece 541, so that the spring is extruded by an external tool and is separated from the mounting position of the rotating shaft. The bottom of the pressing rod 61 may or may not penetrate out of the bottom of the folding member 541, and when the pressing rod 61 is penetrated out, the swing arm 52 and the folding member 541 need to be spaced apart, so as to avoid restricting the swing of the swing arm 52 after the pressing rod 61 penetrates out of the folding member 541.

Further, in the present embodiment, a rotation limiting device 70 is movably disposed in each of the second connecting rods 543, and the rotation limiting device 70 includes: the front end of the rotation limiting pin block 71 penetrates out of the side wall, connected with the telescopic sleeve rod 12, of the second connecting rod 543, a guide post 73 is arranged at the tail end of the rotation limiting pin block 71, the rotation limiting return spring 74 is arranged at the outer side of the guide post 73, the unlocking contact rod 72 is L-shaped, one end of the unlocking contact rod 72 is fixedly connected with the rotation limiting pin block 71, the other end of the unlocking contact rod 72 extends out of the second connecting rod 543, a position avoiding hole 75 is formed in the front end of the rotation limiting pin block 71, when the second connecting rod 543 and the telescopic sleeve rod 12 are horizontal, the rotation limiting pin block 71 extends into the telescopic sleeve rod 12 under the top force of the rotation limiting return spring 74, and the rotation of the telescopic sleeve rod 12 and the second connecting rod 543 is limited through the cooperation with the telescopic sleeve rod 12;

specifically, a cavity 58 for sliding the limiting device is arranged in one end of the second connecting rod 543 facing the folding car body 10, a connecting lug 59 for rotationally connecting with the inner rod 122 is detachably arranged on the cavity 58, and the connecting lug 59 is also used for preventing the rotation limiting device 70 from falling out of the cavity 58; the rotation limiting device 70 includes: the limiting pin block 71, the limiting pin block 71 is slidably disposed in the cavity 58, one end of the limiting pin block 71 passes through the connecting lug 59 to be exposed outside, a slotted hole matched with the limiting pin block 71 is formed in the middle of one end of the inner rod 122 rotationally connected with the connecting lug 59, when the limiting pin block 71 passes through the connecting lug 59, the limiting pin block 71 is inserted into the slotted hole, the second connecting rod 543 and the inner rod 122 are fixed through the cooperation of the limiting pin block 71 and the slotted hole, a guide post 73 is formed at the tail end of the limiting pin block 71, a guide hole (not shown in the figure) matched with the guide post 73 is formed in the cavity 58, the limiting pin block 71 is used for limiting the displacement direction of the limiting pin block 71, a limiting return spring 65 is arranged at the outer side of the guide post 73, the limiting pin block 71 penetrates out of the connecting lug 59 under the acting force of the limiting return spring 74, an unlocking touch rod 72 is further arranged at one end of the limiting pin block 71 and is in an L shape, the unlocking touch rod 72 is fixedly connected with the limiting pin block 71 or integrally formed, the other end of the unlocking touch rod 72 passes through the second connecting rod 543 to be exposed outside, when the inner rod 122 is correspondingly extruded by the limiting pin block 121 and is not matched with the lower end of the limiting pin block 71, the inner rod 71, the second connecting rod is extruded by the limiting pin 71 and is contacted with the lower end of the limiting pin 71, and the limiting pin 71 to be normally extruded by the limiting pin 71, and the inner rod is not contacted with the limiting pin 71, and normally, and the limiting pin 71 is extruded by the limiting pin 72 and normally, which is contacted with the limiting pin rod and is contacted with the lower end and the limiting pin rod 72, and is extruded and normally, and is extruded by the limiting pin rod and the limiting rod 72, and is extruded and the lower end and is contacted by the limiting pin rod 72 and is correspondingly by the limiting pin rod and has and is extruded and has and is integrally. The outer rod 121 can drive the inner rod 122 to vertically rotate relative to the second continuous striking rod; wherein, because the connecting lug 59 is rotationally connected with the inner rod 122 by a rotating shaft, in order to avoid the movement interference of the rotating shaft relative to the rotation limiting pin block 71, the rotation limiting pin block 71 is provided with a position avoiding hole 75, and the length of the position avoiding hole 75 is larger than the diameter of the rotating shaft in the rotating shaft position and position avoiding hole 75, so that the rotating shaft can slide on the position avoiding hole 75, thereby avoiding the movement interference between the rotation limiting pin block 71 and the rotating shaft.

Further, the bottoms of two sides of the front end of the folding bicycle body 10 are respectively provided with an inserting block 16, and each second connecting rod 543 is provided with an inserting hole 544 at a position opposite to the inserting block 16;

specifically, because the telescopic loop rod 12 is rotationally connected with the second connecting rod 543, in order to avoid that the whole steering assembly 50 and the driving assembly 30 are driven to synchronously rotate when the telescopic loop rod 12 rotates relative to the second connecting rod 543, at least one insert block 16 is respectively arranged at the bottom of the front end of the folding car body 10, and one insert block 16 or two insert blocks 16 are respectively arranged on two sides of the folding car body 10 for improving connection stability, and meanwhile, each second connecting rod 543 is respectively provided with an inserting hole 544 corresponding to each insert block 16, the inserting holes 544 are matched with the insert blocks 16, when the inner rod 122 is completely retracted into the outer rod 121, the telescopic limiting device 123 limits the movement of the inner rod 122, and meanwhile, the insert blocks 16 are inserted into the inserting holes 544, and the second connecting rod 543 is limited to rotate relative to the inner rod 122 through the cooperation of the insert blocks 16 and the inserting holes 544.

It should be noted that, telescopic limiting device 123 adopts inside bayonet lock from taking spring and pull ring, and all be equipped with one because of telescopic limiting device 123 on every telescopic loop pole 12, again because telescopic loop pole 12 is the both ends that set up at folding automobile body 10, and again because of coupling assembling 54 can't incline, and the state of a preceding and following can't appear in two drive wheels 31, therefore when needing to remove the spacing, just need two telescopic limiting device 123 to be pulled up simultaneously, and because of the existence of above-mentioned circumstances, the inconvenient person that can appear using appears and can't remove the condition of spacing, for this telescopic limiting device 123 need improve, as shown in fig. 4, be equipped with the lug that outwards extends at telescopic loop pole top of telescopic limiting device 123, be equipped with the recess with the lug adaptation at telescopic loop pole top simultaneously, when needs the unblock, the accessible pull ring pulls out telescopic link and rotates half circle, make lug and recess dislocation, the setting up through the lug and restrict telescopic link 122 this moment, when needs spacing, only need be at telescopic link half circle, make lug and recess correspond, the existence of the condition, the very individual can appear in the circumstances that can appear in the very different from the circumstances, the telescopic link is difficult to be equipped with the telescopic link 122, the inside the corresponding position of telescopic link 122 is realized at the inside the position of telescopic link, and the inside can be stretched out at the position of the corresponding position of telescopic link 122, and the inside can be realized at the position of the telescopic link 122, and the inside can be stretched out at the position of the corresponding position of the telescopic link 122, and can be realized at the position of the end of the telescopic link, and can be adjusted.

Further, in this embodiment, the top of the steering rod 53 exposed outside the control rod 51 is in a T shape, two ends of the top of the steering rod 53 are respectively rotatably connected with a holding rod 531, the outer sides of one end of the two holding rods 531 connected with the steering rod 53 are respectively slidably provided with a first sleeve 532, the top surface of the steering rod 53 is provided with a plurality of control keys 533, the plurality of control keys 533 are electrically connected with the control assembly 20, and the outer side of the top of the control rod 51 is provided with a first limiting device 534 for limiting the sliding of the steering rod 53;

specifically, the direction rod 53 is slidably disposed in the control rod 51, the direction rod 53 may extend out of the control rod 51 when needed to adjust the use height, one end of the direction rod 53 extending out of the control rod 51 is in a T shape, two holding rods 531 are respectively connected to two ends of the top of the direction rod 53 through rotation of rotation shafts, the two holding rods 531 may vertically rotate relative to the direction rod 53 when in use, and the two holding rods 531 may be horizontally rotated relative to the direction rod 53 when not in use, so that the two holding rods 531 are vertically rotated; in order to realize that the holding rod 531 can be fixed with the direction rod 53 when in a horizontal state and prevent rotation, a first sleeve 532 is sleeved outside one end, connected with the holding rod 531, of the direction rod 53, the first sleeve 532 slides to a joint position connected with the holding rod 531, two ends of the first sleeve 532 respectively encircle the direction rod 53 and the holding rod 531, and the fixing of the direction rod 53 and the holding rod 531 is realized, wherein in order to prevent the first sleeve 532 from sliding by itself in the using process, a spring is connected to one end, facing away from the holding rod 531, of the first sleeve 532, and the end, facing away from the holding rod 531, of the first sleeve 532 is always pushed to the direction of the holding rod 531 by the acting force of the spring, so that the first sleeve 532 can reset by itself under the pushing force of the spring even if the first sleeve 532 slides due to unintentional touching; meanwhile, a plurality of control keys 533 are further arranged on the top surface of the middle part of the steering rod 53, the plurality of control keys 533 are electrically connected with the control assembly 20 through wires, and the wires can be led out from the inside of the control rod 51 to avoid the wires from being exposed; the control keys 533 include, but are not limited to, a forward/reverse key, a driving/towing switching key, a lamp on-off key, a horn key, a turn signal control key, etc., and the control principle can refer to the key control of the existing electric bicycle; because the steering rod 53 is in sliding connection with the control rod 51, in order to avoid that the steering rod 53 automatically slides into the control rod 51 again due to gravity when extending out of the control rod 51, a first limiting device 534 is further arranged at the top of the control rod 51, a plurality of clamping holes matched with the first limiting device 534 are formed in the outer side wall of the steering rod 53 at intervals, and the length of the steering rod 53 extending out of the control rod 51 is fixed through the cooperation of the first limiting device 534 and the clamping holes, wherein the first limiting device 534 has the same structure as a locking clamping pin.

It should be noted that, the control key 533 may also adopt a resistive key manner, in which the core setting of the conductive wire may be reduced, and each key of the resistive key has a different resistance value, and when the corresponding key is pressed, a corresponding resistance value is generated and transmitted to the control component 20 through the conductive wire, and the control component 20 receives the resistance signal, and identifies the key function according to the resistance value and performs corresponding control.

Further, a display screen 535 is further provided on a surface of the top of the steering rod 53 facing the folded car body 10, and the display screen 535 is electrically connected to the control assembly 20;

specifically, a display screen 535 is further disposed on the top of the steering rod 53, and the display screen 535 is electrically connected to the control unit 20 for displaying the current running speed, running mode, electric quantity of the power source 22, etc., and the display screen 535 faces the direction in which the folding car body 10 is located.

Further, an extending portion 536 extending vertically upwards is provided at one end of the holding rod 531 far away from the end connected to the direction rod 53, a second sleeve 537 is slidably provided on one extending portion 536, and a power-assisted pulling key 538 is provided on the other extending portion 536, and the power-assisted pulling key 538 is electrically connected to the control unit 20;

Specifically, in order to make the steering rod 53 convenient to use in a trailer state, an extending portion 536 extending vertically upwards is further provided at one end of the holding rod 531 far from the end connected with the steering rod 53, when the two holding rods 531 rotate upwards, the extending portions 536 on the two holding rods 531 are opposite to and contact with each other, and form a rectangular ring shape with the holding rods 531 and the steering rod 53, so that the steering rod 53 is convenient to drag in the trailer state, meanwhile, in order to prevent the two extending portions 536 from being separated from opposite contact, a second sleeve 537 is movably provided on one of the extending portions 536, when the two extending portions 536 are opposite to and contact with each other, the second sleeve 537 can be prevented from being separated by sliding the second sleeve 537 to the contact position of the two extending portions 536, and when the two extending portions 536 need to be separated, the second sleeve 537 can be pushed away directly; the other extension 536, which is not provided with the second sleeve 537, is provided with a power-assisted poking key 538, and the power-assisted poking key 538 is electrically connected with the control assembly 20, so that when the vehicle is in a towing state, the effect of towing assistance is achieved through the power-assisted poking key 538, that is, the driving wheel 31 can be operated at a constant speed through poking the power-assisted poking key 538, and further the effect of towing assistance is achieved.

In order to avoid the second sleeve 537 sliding freely on the two extending portions 536, the tail end of the second sleeve 537 is connected with one extending portion 536 thereof by a spring, when the two extending portions 536 are opposite and contact, the second sleeve 537 moves towards the direction of the other extending portion 536 by the acting force of the spring, thereby realizing the fixation between the two extending portions 536, and avoiding the occurrence of unnecessary sliding by the arrangement of the spring, which causes the two extending portions 536 to be separated from the opposite state.

It should be noted that, the first sleeve 532 and the second sleeve 537 are both limited to the steering rod 53 or the extension 536 by the convex ring of the inner wall, so that they cannot be completely separated.

Further, both the grip bars 531 are provided with a grip 539, wherein one of the grip 539 is rotatably connected with the grip bar 531 and electrically connected with the control unit 20, and the grip 539 rotates around the grip bar 531 as a rotation center for controlling the vehicle speed of the folding vehicle body 10;

specifically, one of the two grip sleeves 539 can rotate relative to the grip lever 531, the rotatable grip sleeve 539 is electrically connected with the control assembly 20 and is used for controlling the rotating speed of the electric wheel, the control principle is that an angle position sensor is arranged on the grip sleeve 539, the rotating angle of the grip sleeve 539 is sent to the control assembly 20 through the angle position sensor, the control assembly 20 controls corresponding voltage or current output according to the rotating angle, and the operation speed of the driving wheel 31 is adjusted so as to control the speed.

It should be noted that another grip 539 may be provided in a rotating structure, where the rotation of the grip 539 may be connected to an electronic brake structure, and the rotation of the grip 539 controls the rotation speed of the electric wheel to brake, thereby improving the braking effect, where the control principle is consistent with the control principle of the grip 539, and the difference is that the larger the rotation angle of the grip 539 is, the faster the speed is, and the larger the rotation angle of the grip 539 is, and the larger the braking force is.

Further, a turning rod 56 is rotatably connected to the bottom of the control rod 51, the swing arm 52 is fixedly connected to the bottom of the turning rod 56, the shaft sleeve is sleeved outside the turning rod 56, and a sliding sleeve 57 is slidably arranged outside the control rod 51;

specifically, in order to enable the control rod 51 to be inclined for a user to drag, a turning rod 56 is rotatably connected to the bottom of the control rod 51 in a rotating shaft manner, the swing arm 52 is arranged at the bottom of the turning rod 56, and the control rod 51 can vertically rotate relative to the turning rod 56, so that the control rod 51 is inclined, and therefore the user can drag conveniently, the dragging is more labor-saving and convenient; the axle sleeve rotates through structure such as bearing and turns the pole 56 to be connected, makes control rod 51 can drive turns the pole 56 and rotates relative axle sleeve level to carry out directional control, in order to guarantee the stability of control rod 51 under riding the state, still overlap in control rod 51 and turns the pole 56 junction and be equipped with sliding sleeve 57, when making and need not drag, can slide sliding sleeve 57 to control rod 51 and turns the pole 56 junction, restricts the rotation of control rod 51 and turns pole 56 through sliding sleeve 57, in order to ensure the use.

Further, in the present embodiment, the control unit 20 includes: a controller 21 and at least one power source 22 electrically connected to the controller 21, wherein the driving assembly 30 and the direction control assembly 50 are electrically connected to the controller 21, respectively;

Specifically, the controller 21 is configured to receive a control signal sent by the control key 533 and control the operation of the driving wheel 31 according to the control signal, and the power supply 22 is configured to provide electric energy to the controller 21 and the driving wheel 31, and a specific control principle is the prior art, so that details are not described herein.

It should be noted that, for braking, a foot brake is disposed on one of the first connecting rods 542, and the foot brake is connected to the two driving wheels 31 and/or the two driven wheels 11 via a brake line for controlling the driving speed, wherein the driving wheels 31 or the driven wheels 11 have a brake structure such as a drum brake, a disc brake, or an electronic brake, which is not described herein.

The use state is as follows: as shown in fig. 1, when the folding is required in this state, the two telescopic limiting devices 123 are pulled to separate from the limiting state, then the telescopic limiting devices 123 are rotated to enable the telescopic limiting devices 123 to be unable to descend and limit, then the steering component 50 can be pushed to enable the steering component 50 to move towards the position where the folding vehicle body 10 is located, at this time, the inner rod 122 is pushed to retract into the outer rod 121, the movement of the inner rod 122 is limited by the telescopic limiting devices 123, at this time, the inserting block 16 is also inserted into the inserting hole 544, the rotation of the connecting component 54 is limited by the cooperation of the inserting block 16 and the inserting hole, the telescopic sleeve rod 12 can be rotated, the tail end of the telescopic sleeve rod is located in the fixing groove 141 of the second fixing piece 14 and fixed, then the telescopic sleeve rod 12 can be lifted upwards to push the pressing handle 63 to drive the pressing rod 61 to ascend, when the pressing rod 61 ascend to the limiting position, the two limiting pins 64 can retract automatically under the acting force of the reset spring 65, at this time, the first connecting rod 542 is pulled upwards to drive the piece 541 to ascend, the first connecting rod 542 can rotate vertically relative to the piece 541 and the second connecting rod to fold, and the folding control rod 52 can also rotate the swing arm 40 as shown in fig. 40; the folding car body 10 can be folded at this time until the folding is completed as shown in fig. 12; when the folding bicycle body 10 needs to be unfolded and put into a driving state, the connecting assembly 54 and the transmission piece 40 are unfolded and folded downwards under the drive of the two telescopic loop bars 12, at the moment, the pressing handle 63 can be pressed down to enable the pressing rod 61 to descend, the extrusion block 62 pushes the two limiting pins 64 to move, the two limiting pins are inserted into the pin holes 55 to form fit, the first connecting rod 542 and the folding piece 541 are fixed, the loop bar limiting device 15 is pulled one by one, the telescopic loop bars 12 are enabled to be converted into a horizontal state from an inclined state, the telescopic loop bars 12 are fixed through the loop bar limiting device 15 to avoid rotation, the two telescopic limiting devices 123 can be pulled and rotated afterwards, at the moment, the inner rod 122 is out of limit of the telescopic limiting device 123, and because the unlocking trolley bar 72 is in contact with the outer rod 121, after the inner rod 122 is out of limit, the inner rod 122 is influenced by the effects of the unlocking trolley bar 72 and the rotation limiting return spring 74 to be automatically ejected for a distance, at the moment, the steering assembly 50 can be pulled forwards, the inner rod 122 is pulled out of the outer rod 121 until the limiting position, at the moment, the telescopic limiting device 123 is rotated to be enabled to enter into a limiting state, and the movement of the inner rod 122 is limited to be unfolded.

When the driving state is required to be converted into the dragging state, two conditions can be determined according to the self requirements of a user, namely, in the driving state, the sliding sleeve 57 on the control rod 51 slides upwards to separate from the joint of the turning rod 56 and the control rod 51, and at the moment, the control rod 51 can rotate relative to the turning rod 56 to enable the control rod to be inclined so as to facilitate dragging; in the driving state, the inner rod 122 is retracted into the outer rod 121 and fixed, the steering assembly 50 and the driving assembly 30 are abutted against the front end of the folding body 10, and then the control rod 51 is tilted with respect to the turning rod 56 by the sliding sleeve 57, as shown in fig. 11.

It should be noted that, because the two inner rods 122 are parallel when extending out of the outer rod 121, in order to improve the diversity and convenience of use, a support member such as a pedal may be further disposed between the two inner rods 122, so that a user may directly stand on the pedal.

In summary, the telescopic sleeve rod is rotationally connected to the front end of the folding vehicle body, the direction control assembly and the driving assembly are driven to move forwards by the extension of the telescopic sleeve rod, the manned function is achieved, the telescopic sleeve rod is not required to be retracted during use, occupied space is reduced, free driving and towing down conversion can be achieved according to use requirements, the operation is simple, the use is convenient, a brand-new folding electric trailer is achieved, multiple functions are achieved, the novelty is high, the attractive force is high, and the product competitiveness is improved.

The present utility model is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the utility model is not limited to the specific details, representative apparatus and illustrative examples shown and described herein.

Claims

1. A folding electric trailer with telescopically movable wheels, comprising: folding the vehicle body and the control assembly; the folding trolley is characterized in that a follower wheel is mounted at the bottom of the tail end of the folding trolley body, at least one telescopic sleeve rod is connected to the front end of the folding trolley body, a direction control component is connected to the extending end of the telescopic sleeve rod, a driving component is connected to the lower side of the direction control component, the direction control component is in transmission connection with the driving component, the direction control component controls the driving component to turn, the direction control component and the driving component are both located at the front end of the folding trolley body, a telescopic limiting device is arranged at the front end of the telescopic sleeve rod and used for limiting the telescopic sleeve rod, the telescopic sleeve rod is used for synchronously driving the direction control component and the driving component to translate away from the direction of the folding trolley body when extending, the control component is arranged on the folding trolley body, and the driving component and the direction control component are respectively and electrically connected.

2. The foldable electric scooter of claim 1, wherein two telescopic loop bars are provided, each of the telescopic loop bars being located at a front end of the foldable scooter body, each of the telescopic loop bars comprising: an outer rod and an inner rod; the inner rod is arranged in the outer rod in a sliding mode, one end of the inner rod is connected with the steering assembly in a rotating mode, a connecting seat is fixedly connected to the outer end of the front end of the outer rod, the connecting seat is connected with the front end of the folding car body in a rotating mode, and the outer rod is connected with the steering assembly in a rotating mode through the connecting seat relative to the folding car body.

3. The foldable electric scooter of claim 2, wherein the bottoms of both sides of the foldable scooter body are fixedly provided with first fixing members for fixing the telescopic loop bars, the first fixing members are located at positions corresponding to the lengths of the telescopic loop bars, the tops of both sides of the foldable scooter body are rotatably provided with second fixing members for fixing the telescopic loop bars, and the second fixing members are located at positions corresponding to the lengths of the telescopic loop bars after the telescopic loop bars are rotated by a predetermined angle relative to the foldable scooter body.

4. The foldable electric scooter of claim 3, wherein the first and second fixing members are each provided with a fixing groove, an extension block is provided at an end of the outer rod away from the steering assembly, the extension block is adapted to the fixing groove, and a sleeve rod limiting device for limiting rotation of the telescopic sleeve rod is further provided on the extension block.

5. The retractable mobile wheel folding electric trailer of claim 2, wherein the drive assembly comprises: a driving wheel; the driving wheel is provided with two, two be connected with the driving part between the driving wheel, accuse is to the subassembly with the driving part rotates to be connected for drive two the driving wheel synchronous rotation, the driving part includes first transfer line and locates first transfer line both ends and respectively with the second transfer line that first transfer line rotated to be connected, two the second transfer line is kept away from the one end rotation of first transfer line is connected with the third transfer line, the third transfer line is kept away from the one end of second transfer line is rotated with the corresponding driving wheel and is connected.

6. The retractable mobile wheel folding electric trailer of claim 2, wherein the steering assembly comprises: the control rod, the bottom cover of control rod is equipped with coupling assembling, coupling assembling be used for with flexible loop bar is connected and is supported the control rod, the control rod can be relative coupling assembling rotates, drive assembly be located coupling assembling's below and with coupling assembling's bottom surface rotates to be connected, the bottom surface of control rod still is connected with the swing arm, the swing arm with drive assembly rotates to be connected, the control rod passes through the swing arm drives drive assembly rotates, still the activity is equipped with the steering column in the control rod.

7. The retractable mobile wheel folding electric trailer of claim 6, wherein the connection assembly comprises: the folding piece is arranged on the outer side of the control rod, two ends of the folding piece are respectively and rotatably connected with a first connecting rod, one ends of the two first connecting rods, which are far away from the folding piece, are respectively and rotatably connected with a second connecting rod, the driving assembly is rotatably connected with the second connecting rod, the side wall of the second connecting rod is rotatably connected with the telescopic sleeve rod, and the folding piece is further provided with a connecting limiting device for limiting the rotation of the first connecting rods.

8. The retractable mobile wheel folding electric trailer of claim 7, wherein the connection limiting device comprises: the middle part of the pressing rod is provided with a pressing block, the pressing rod is arranged in the middle part of the folding piece in a sliding manner, and the top of the pressing rod is detachably connected with a pressing handle; limiting pins are respectively arranged in the two ends of the folding piece in a sliding mode, the pressing rods are located between the two limiting pins, one ends, opposite to the limiting pins, of the pressing rods are inclined planes, reset springs are respectively arranged in the two limiting pins, the limiting pins move towards the direction where the pressing rods are located through the reset springs, and pin holes which correspond to the limiting pins and are matched with the limiting pins are formed in the ends, connected with the folding piece, of the first connecting rods.

9. The foldable electric scooter of claim 7, wherein each of the second connecting rods is movably provided with a rotation limiting device, the rotation limiting device comprising: the device comprises a rotation limiting pin block, an unlocking feeler lever and a rotation limiting reset spring, wherein the head end of the rotation limiting pin block penetrates out of the side wall, connected with the telescopic sleeve rod, of the second connecting rod, a guide post is arranged at the tail end of the rotation limiting pin block, the rotation limiting reset spring is arranged on the outer side of the guide post, the unlocking feeler lever is L-shaped, one end of the unlocking feeler lever is fixedly connected with the rotation limiting pin block, the other end of the unlocking feeler lever extends out of the second connecting rod, a position avoiding hole is formed in the head end of the rotation limiting pin block, and when the second connecting rod and the telescopic sleeve rod are in a horizontal state, the rotation limiting pin block stretches into the telescopic sleeve rod under the top force of the rotation limiting reset spring and limits the rotation of the telescopic sleeve rod and the second connecting rod through the cooperation of the telescopic sleeve rod.

10. The foldable electric scooter of claim 7, wherein the bottoms of both sides of the front end of the foldable scooter body are respectively provided with an insertion block, and each of the second connection rods is provided with an insertion hole at a position opposite to the insertion block.

11. The foldable electric scooter of claim 6, wherein the steering rod is exposed at the top of the steering rod and is in a T shape, two ends of the top of the steering rod are respectively connected with holding rods in a rotating manner, a first sleeve is respectively arranged at the outer sides of one ends of the two holding rods connected with the steering rod in a sliding manner, a plurality of control keys are arranged on the top surface of the steering rod, a plurality of control keys are electrically connected with the control assembly, and a first limiting device is arranged at the outer sides of the top of the control rod and used for limiting the sliding of the steering rod.

12. The foldable electric scooter of claim 11, wherein a display screen is further provided on a side of the top of the steering rod facing the foldable scooter body, the display screen being electrically connected to the control assembly.

13. The foldable electric scooter of claim 11, wherein two of said handles are provided with upwardly extending extensions extending vertically away from the end connected to said steering rod, one of said extensions being slidably provided with a second sleeve and the other of said extensions being provided with a booster key, said booster key being electrically connected to said control assembly.

14. The foldable electric scooter of claim 13, wherein both of said grips are provided with a handle sleeve, one of said handle sleeves being rotatably connected to said grips and electrically connected to said control assembly, said handle sleeve being rotatable about said grips for controlling the speed of said scooter.

15. The foldable electric scooter of claim 6, wherein the bottom of the control rod is rotatably connected with a turning rod, the swing arm is fixedly connected with the bottom of the turning rod, the connecting assembly is sleeved outside the turning rod, and a sliding sleeve is slidably arranged outside the control rod.

16. The retractable mobile wheel folding electric trailer of claim 1, wherein the control assembly comprises: the device comprises a controller and at least one power supply electrically connected with the controller, wherein the driving component and the direction control component are respectively and electrically connected with the controller.