CN219821656U

CN219821656U - Multipurpose folding trailer handle and folding trailer

Info

Publication number: CN219821656U
Application number: CN202321122225.5U
Authority: CN
Inventors: 罗海成; 张建华; 李秀清
Original assignee: Shenzhen Yunrui IOT Technology Co Ltd
Current assignee: Shenzhen Yunrui IOT Technology Co Ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-10-13
Anticipated expiration: 2033-05-10

Abstract

The application relates to a multi-purpose folding trailer handle, which includes: a direction rod assembly. The bottom end of the direction rod assembly is connected with at least one direction wheel. The direction wheel rotates with the direction rod assembly. The bottom of the direction rod assembly is located above the direction wheel. The shaft sleeve is used to rotate the direction rod assembly. One side of the shaft sleeve is connected to a limiter, and both ends of the limiter are respectively connected to support rods. Using the above design, the shaft sleeve and the limiter are set into a rotational connection, so that the multi-purpose folding trailer handle has a variety of shapes, which can be converted according to the use situation, improving practicality, and the multi-purpose folding trailer handle has a control function, which can be adapted to the situation. Equipped with an electric-driven folding car body or an ordinary folding car body, it is not subject to restrictions and improves applicability. The folding car body has the functions of electric driving for people and cargo, electric power-assisted towing, and folding and storage. It is lightweight, portable, and It is easy to move around to meet the needs of various scenarios.

Description

Multipurpose folding trailer handle and folding trailer

Technical Field

The utility model relates to the technical field of folding trailers, in particular to a multipurpose folding trailer handle and a folding trailer.

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.

As known from the specification and the drawing of the existing folding trailer (a novel camping car) according to the patent number CN202122285319.1, the folding trailer disclosed a foldable car body and a handle which is positioned at the front end of the car body and can rotate relative to the folding car body, when the folding trailer is required to be used, the car body can be unfolded, the handle is inclined relative to the car body so as to facilitate the towing, when the folding trailer is not used, the folding trailer can fold the folding trailer and reduce the occupied space when the folding trailer is stored, but due to the structural design, the folding trailer can only carry things, but not people or children, and can only be towed by manpower, and has a certain weight due to the carrying things, the folding trailer also needs to walk in the towing process, and if the folding trailer is used for a long time, the folding trailer is easy to bring tired feeling to a user, and has poor use experience; based on this situation, still designed a helping hand trailer among the prior art, like patent number CN202220922980.0 its disclosed a helping hand trailer, it makes the trailer itself possess power through setting up power pack on the automobile body, laborsaving when promoting the use to alleviate the tired sense of user under long-time use, but these two kinds of schemes all have a common problem that, their trailer handle, the function is single, only possess the effect of being convenient for drag, and all be limited by the structural limitation of trailer handle, can't combine the function that realizes driving the manned with the trailer automobile body.

Accordingly, there is a need to design a multipurpose folding trailer handle and folding trailer 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 multipurpose folding trailer handle comprising: the steering rod assembly, the bottom of steering rod assembly is connected with at least one direction wheel, the direction wheel is along with the steering rod assembly rotates, the bottom of steering rod assembly is located the top of direction wheel is equipped with the axle sleeve, the axle sleeve is used for making the steering rod assembly rotates, one side of axle sleeve is connected with the locating part, be connected with a bracing piece on the locating part at least.

In a preferred embodiment, the steering rod assembly comprises: the telescopic steering device comprises a sleeve rod and a steering rod, wherein the steering rod is arranged in the sleeve rod in a telescopic mode, a clamping device which limits the axial movement and radial rotation of the steering rod is arranged between the steering rod and the sleeve rod, the top end of the steering rod is further connected with a handle ring, and the handle ring drives the sleeve rod to rotate through the steering rod.

In a preferred embodiment, the clamping device comprises: the telescopic clamping pin is arranged at the top of the loop bar, and the telescopic clamping hole is arranged on the side wall of the steering rod and matched with the telescopic clamping pin.

In a preferred embodiment, a mounting hole is formed in the bottom of the handle ring, the top end of the steering rod is inserted into the mounting hole in the bottom of the handle ring, a rotation limiting bayonet lock is formed in the side wall of the top end of the steering rod, and a plurality of rotation limiting holes matched with the rotation limiting bayonet lock are formed in the side wall of the mounting hole in the bottom of the handle ring.

In a preferred embodiment, the handle ring is in an inverted trapezoid shape, two sides of the handle ring are respectively provided with folding grooves, the same ends of the two folding grooves are rotatably connected with holding rods, and one ends of the holding rods connected with the folding grooves are also provided with limiting devices for limiting when the holding rods are contained in the folding grooves or when the holding rods are horizontal relative to the handle ring.

In a preferred embodiment, the handle ring is further provided with a plurality of control keys, and a plurality of control keys are connected with an integrated wire.

In a preferred embodiment, the sleeve is movably connected with the sleeve rod, the sleeve rod is displaced and/or rotated relative to the sleeve rod, an arc-shaped pin hole with a predetermined angle is formed in the bottom of the sleeve rod within the range of the sleeve rod, and a folding bayonet lock is arranged at a position of the sleeve rod corresponding to the arc-shaped pin hole.

In a preferred embodiment, the loop bar is further provided with a plurality of folding adjustment holes, the folding adjustment holes are matched with the folding bayonet locks, and the loop bar is further provided with a rotation limiting chute which corresponds to and is matched with the folding bayonet locks.

In a preferred embodiment, the inner wall of the loop bar is provided with a protruding rotation limiting projection, and the outer side wall of the direction bar is provided with a rotation limiting groove matched with the rotation limiting projection.

In a preferred embodiment, the shaft sleeve is rotationally connected with the limiting part, one side of the shaft sleeve is further provided with an extended connecting plug block, a plug block sliding groove is formed in the middle of the top surface of the connecting plug block, the connecting plug block is far away from a plug block rotating shaft hole formed in the side wall of one end of the shaft sleeve, a waist-shaped sliding hole arranged at an interval with the plug block rotating shaft hole is further formed in the side wall of the connecting plug block, and a control rotating shaft hole is formed below the waist-shaped sliding hole.

In a preferred embodiment, the side of the limiting part, which faces away from the supporting rod, is provided with a sleeve, the end face and the bottom face of the sleeve are open, an avoidance groove is formed in the middle of the top face of the sleeve, an insert rotating shaft is further connected in the sleeve, the insert rotating shaft is rotationally connected with the insert rotating shaft hole, and the shaft sleeve rotates relative to the limiting part through the insert rotating shaft.

In a preferred embodiment, the sleeve is also rotatably connected with a folding control handle, the folding control handle comprising: a handle portion, a stem portion; the utility model provides a handle, including handle, pole portion, handle, control pivot, pole portion, control pivot hole, pivot, pole portion is located the pole portion is kept away from the one end of handle is equipped with the control pivot, the control pivot with the one end of control pivot still is equipped with the pivot slide hole, pivot slide hole internalization is equipped with first bayonet lock, pole portion is located the inserts spout with dodge the inslot, the both ends of first bayonet lock are located respectively in the kidney-shaped slide hole, the handle winds when the control pivot rotates drive first bayonet lock in the pivot slide hole with kidney-shaped slide hole is internal to be removed.

In a preferred embodiment, the two sides of the end face of the casing opening are respectively provided with a first U-shaped hole, the two sides of the bottom face of the casing opening are respectively provided with a second U-shaped hole, when the shaft sleeve rotates relative to the limiting piece, the first bayonet lock is clamped into the corresponding first U-shaped hole or the second U-shaped hole, and the first U-shaped hole and the second U-shaped hole are separated by a preset angle.

In a preferred embodiment, the bottom surface of the connecting plug is also fixedly connected with a first tension spring, and one end, far away from the end connected with the connecting plug, of the first tension spring is fixedly connected with one end, provided with the control rotating shaft, of the rod portion.

In a preferred embodiment, the same ends of the two support rods are respectively connected with the limiting piece in a rotating manner, one end of each support rod, which is far away from the limiting piece, is respectively connected with a connecting sleeve in a rotating manner, and one opposite surfaces of the two connecting sleeve incline by a preset angle in opposite directions, so that one end of each support rod, which is far away from the connecting sleeve, horizontally rotates around the connecting sleeve to form a triangular structure.

In a preferred embodiment, one end of the connecting sleeve piece, which is far away from the supporting rod, is provided with a connecting shaft, two ends of the connecting shaft respectively penetrate out of two sides of the connecting sleeve piece, a displacement sliding hole is formed in the middle of the connecting sleeve piece, a second bayonet lock is arranged in the displacement sliding hole, and two second tension springs are connected between the second bayonet lock and the connecting shaft.

In a preferred embodiment, the first bayonet lock is connected with two linkage lines, and one ends of the two linkage lines, which are far away from the first bayonet lock, are respectively connected with two second bayonet locks, so that when the first bayonet lock is driven to move by the folding control handle, the second bayonet lock is linked with the first bayonet lock through the linkage lines.

A second embodiment of the present utility model provides a folding trailer comprising a folding body, a multipurpose folding trailer handle as in any one of the embodiments above; the folding car body is foldable and contractible, the electric power wheel is installed respectively to the rear end both sides of folding car body, the electric power wheel is used for driving after the circular telegram folding car body marches, still be equipped with controller and power on the folding car body, the power is used for the controller with the electric power wheel provides electric power, the controller is used for receiving instruction control the power with the work of electric power wheel, the front end both sides of folding car body can be dismantled respectively and be connected with the auxiliary wheel, the front end both sides of folding car body still are equipped with the bearing base respectively, the bracing piece of multipurpose folding trailer handle with the bearing base is connected.

Preferably, the auxiliary wheel has a height smaller than the heights of the power wheel and the steering wheel.

Preferably, one end of the bearing base is provided with a folding seat with an end face and a top face being open, the connecting shaft of the connecting sleeve is connected with the folding seat in a rotating mode, third U-shaped holes are respectively formed in two sides of the top face of the folding seat and are used for being matched with the second bayonet locks to limit, C-shaped holes are respectively formed in two sides of the end face of the folding seat and are used for being matched with the second bayonet locks to limit, and the length of each C-shaped hole is larger than the width of each second bayonet lock.

Preferably, a folding seat is detachably installed above the front end of the folding car body, a seat support is arranged at the bottom of the folding seat, and the seat support is connected with the folding car body.

The beneficial effects of the utility model are as follows: the shaft sleeve and the limiting piece are set to be rotationally connected, so that the multipurpose folding trailer handle has various forms, can be converted according to the use condition, and has the control function, can be adapted to a folding vehicle body with electric drive or a common folding vehicle body, is not limited, and has the advantages of improving the applicability, enabling the folding vehicle body to have the functions of driving by electric people and things, dragging by electric power assistance and folding and storing, being light, portable and convenient to move, and meeting the use requirements of various scenes.

Drawings

FIG. 1 is a schematic view of the structure of a multipurpose folding trailer handle of the present utility model;

FIG. 2 is an exploded view of the multipurpose folding trailer handle of the present utility model;

FIG. 3 is a schematic view of the structure of the handle ring of the present utility model;

FIG. 4 is a schematic view of the steering column of the present utility model;

FIG. 5 is a schematic view of the structure of the loop bar of the present utility model;

FIG. 6 is a schematic view of the structure of the sleeve of the present utility model;

FIG. 7 is a schematic view of a folding control handle according to the present utility model;

FIG. 8 is a schematic view of a limiting member according to the present utility model;

FIG. 9 is an exploded view of the connection kit of the present utility model;

fig. 10 is a schematic view of a folding body structure of a second embodiment of the present utility model;

FIG. 11 is a combined schematic view of the first and second embodiments of the present utility model;

FIG. 12 is a schematic drawing showing the towing operation in the combined state of the first embodiment and the second embodiment of the present utility model;

fig. 13 is a schematic folding view of the first embodiment and the second embodiment of the present utility model in combination;

FIG. 14 is a schematic view of an auxiliary wheel lift of the present utility model;

FIG. 15 is a block diagram of an electrical connection of the present utility model;

FIG. 16 is a schematic view of the structure of the power wheel of the present utility model;

fig. 17 is a functional block diagram of a controller of the present utility model.

In the figure:

10. a steering rod assembly; 101. a steering lever; 1011. a telescopic clamping hole; 1012. rotation limiting bayonet lock; 1013. a rotation limiting groove;

102. a handle ring; 1021. rotation limiting holes; 1022. a folding groove; 1023. a grip; 1024. a limiting device; 1025. a control key; 1026. integrating wires; 1027. a display screen;

103. a loop bar; 103-A, a clamping device; 1031. a telescopic bayonet; 1032. arc pin holes; 1033. folding the adjusting hole; 1034. a rotation limiting chute; 1035. rotation limiting protruding blocks; 1036. a steering wheel;

11. a shaft sleeve; 111. folding bayonet lock; 112. connecting the plug blocks; 113. a plug sliding groove; 114. a plug rotating shaft hole; 115. waist-shaped slide holes; 116. controlling a rotating shaft hole; 117. a first tension spring;

12. folding the control handle; 121. a handle; 122. a stem portion; 123. a control rotating shaft; 124. a rotating shaft sliding hole; 125. a first bayonet;

13. a limiting piece; 131. a casing; 132. an avoidance groove; 133. a plug-in block rotating shaft; 134. a first U-shaped aperture; 135. a second U-shaped aperture;

14. a support rod; 141. a connection kit; 142. a connecting shaft; 143. a displacement slide hole; 144. a second bayonet lock; 145. a second tension spring; 146. a foot brake;

15. folding the vehicle body; 151. a controller; 152. a power supply; 153. a power wheel; 154. an auxiliary wheel; 155. a load-bearing base; 156. a folding seat; 157. a third U-shaped aperture; 158. a C-shaped aperture;

16. Folding the seat; 161. a seat support.

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 utility model may be embodied in many other forms other than as described herein and similar modifications may be made by those skilled in the art without departing from the spirit of the utility model.

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. 1-9, a first embodiment of the present utility model provides a multipurpose folding trailer handle comprising: the steering rod assembly 10, wherein the bottom end of the steering rod assembly 10 is connected with at least one steering wheel 1036, the steering wheel 1036 rotates along with the steering rod assembly 10, a shaft sleeve 11 is arranged at the bottom of the steering rod assembly 10 above the steering wheel 1036, the shaft sleeve 11 is used for enabling the steering rod assembly 10 to rotate, one side of the shaft sleeve 11 is connected with a limiting piece 13, and at least one supporting rod 14 is connected to the limiting piece 13;

specifically, when the multipurpose folding trailer handle is combined with the external trailer, the steering rod assembly 10 is used for controlling the traveling direction of the external trailer, at least one steering wheel 1036 is connected to the bottom of the steering rod assembly 10, the number of the steering wheels 1036 can be increased according to the use requirement, if the stability of the whole folding trailer needs to be improved, two steering wheels 1036 can be arranged, the two steering wheels 1036 are spaced by a preset distance, and the two steering wheels 1036 are arranged at intervals, so that the supporting points are increased, the supporting distance of the two sides is prolonged, the stability is improved, and the side turning is avoided; the bottom of the steering rod assembly 10 is also provided with a shaft sleeve 11 for enabling the steering rod assembly 10 to rotate in situ relative to the shaft sleeve 11 so as to drive the steering wheel 1036 to rotate, one side of the shaft sleeve 11 is connected with a limiting piece 13, the limiting piece 13 is used for connecting a supporting rod 14 and the steering rod assembly 10, the supporting rod 14 is provided with two, the same ends of the two supporting rods 14 are respectively connected with the limiting piece 13, the supporting rod 14 is used for being connected with an external trailer, one of the two supporting rods is movably connected, the other supporting rod 14 is fixedly connected, the first embodiment of the utility model is preferably movably connected, and the multipurpose folding trailer handle can change the use posture according to requirements through the movable connection so as to meet different use requirements.

Further, in the present embodiment, the steering rod assembly 10 includes: the steering device comprises a sleeve rod 103 and a steering rod 101, wherein the steering rod 101 is telescopically arranged in the sleeve rod 103, a clamping device for limiting the axial movement of the steering rod 101 is further arranged between the steering rod 101 and the sleeve rod 103, the top end of the steering rod 101 is further connected with a handle ring 102, and the handle ring 102 drives the sleeve rod 103 to rotate through the steering rod 101;

specifically, the steering rod 101 can slide in the loop bar 103 in a telescopic manner to adjust the use height of the steering rod 101, meanwhile, a clamping device for limiting the axial movement and the radial movement of the steering rod 101 relative to the loop bar 103 is further arranged between the loop bar 103 and the steering rod 101, so that the steering rod 101 can drive the loop bar 103 to rotate horizontally, the steering wheel 1036 is fixedly or detachably connected with the bottom end of the loop bar 103, the steering wheel 1036 can be synchronously driven by the steering rod 101, meanwhile, the top of the steering rod 101 is connected with the handle ring 102, the handle ring 102 is hollow, a user can conveniently put the hand into the handle ring 102 when the user needs to drag, the convenience of dragging is improved, and the handle ring 102 can drive the steering rod 101 and the loop bar 103 to rotate relative to the shaft sleeve 10311 so as to control the orientation of the steering wheel 1036.

Further, as shown in fig. 4 and 5, the clamping device includes: a telescopic bayonet 1031 provided at the top of the loop bar 103, and a telescopic bayonet 1011 provided on the side wall of the steering bar 101 to be matched with the telescopic bayonet 1031;

specifically, to avoid the random movement of the steering rod 101 in the loop bar 103, a clamping device is provided between the loop cylinder and the steering rod, and the clamping device includes: the telescopic clamping pin 1031 arranged at the top of the loop bar 103, and the plurality of telescopic clamping holes 1011 formed in the side wall of the steering rod 101 along the length direction are arranged at intervals, and on the same straight line, the position of the steering rod 101 relative to the loop bar 103 is fixed through the cooperation of the telescopic clamping pin 1031 and the telescopic clamping holes 1011, wherein the telescopic clamping pin 1031 is internally provided with a spring, the head part of the telescopic clamping pin 1031 is ejected into the telescopic clamping holes 1011 under the acting force of the spring, the limit is realized, and if the limit is required to be released, the tail part of the telescopic clamping pin 1031 can be pulled to enable the head part of the telescopic clamping pin 1031 to be separated from the telescopic clamping holes 1011.

Further, in this embodiment, as shown in fig. 2, 3 and 4, a mounting hole is formed in the bottom of the handle ring 102, the top end of the steering rod 101 is inserted into the mounting hole in the bottom of the handle ring 102, the top end of the steering rod 101 is inserted into the bottom of the handle ring 102 and is rotatably connected, a rotation limiting bayonet 1012 is disposed on the top end side wall of the steering rod 101, and a plurality of rotation limiting holes 1021 matched with the rotation limiting bayonet are disposed on the mounting hole side wall in the bottom of the handle ring 102;

Specifically, in order to facilitate the rotation of the handle ring 102 due to the rotation of the steering wheel 1036 under different use demands, the handle ring 102 can change the angle relative to the steering rod 101, a mounting hole (not shown in the figure) is formed in the middle of the bottom surface of the handle ring 102, the top end of the steering rod 101 is inserted into the mounting hole, the bearing is tightly matched with the inner side wall of the mounting hole through the bearing and the like, the bearing can also be used for preventing the handle ring 102 from separating from the steering rod 101 after losing the limitation of the rotation limiting bayonet 1012, and simultaneously, the handle ring 102 can rotate freely relative to the steering rod 101, wherein the handle ring 102 can rotate freely relative to the steering rod 101, a plurality of rotation limiting holes 1021 are formed in the side wall at the bottom of the handle ring 102, and simultaneously, rotation limiting bayonet 1012 is formed in the top of the steering rod 101 along the circumferential direction, the rotation limiting bayonet 1012 is matched with the rotation limiting holes 1021, the rotation of the handle ring 101 is driven through the rotation limiting bayonet 1012 and the rotation limiting bayonet 1021, and the rotation of the handle ring 101 can be realized, and the rotation of the handle ring is satisfied, and the rotation of the handle ring can be ensured by the rotation limiting bayonet lock is not in the same structure as the preset angle 1031.

Further, in this embodiment, as shown in fig. 3, the handle ring 102 has an inverted trapezoid shape, two sides of the handle ring 102 are respectively provided with folding grooves 1022, the same ends of the two folding grooves 1022 are rotatably connected with a holding rod 1023, and one end of the holding rod 1023 connected with the folding groove 1022 is further provided with a limiting device 1024 for limiting when the holding rod 1023 is accommodated in the folding groove 1022 or when the holding rod 1023 is horizontal relative to the handle ring 102;

specifically, the shape of the handle ring 102 further includes, but is not limited to, triangle, rectangle, ellipse, circle or other polygons, in the present application, in order to make the structure reasonable preferably be inverted trapezoid, two sides of the handle ring 102 are respectively provided with a folding groove 1022, one end of the folding groove 1022 is rotatably connected with a holding rod 1023 by a rotation shaft, the holding rod 1023 can be rotatably stored in the folding groove 1022 when not in use, wherein in order to make the holding rod 1023 normally used when in use, one end of the folding groove 1022 connected with the holding rod 1023 is further provided with a limiting device 1024, in the present application, the limiting device 1024 is preferably a bayonet lock with a spring, which has a simple structure, convenient installation and low cost, the limiting device 1024 can be other limiting structures with or without a rebound function, such as a bayonet lock structure, a gear structure, etc., and simultaneously, when the holding rod 1023 is in an unfolded state or an unfolded state, a hole adapted to the limiting device 1024 is provided on the holding rod 1023 corresponding to the position of the limiting device 1024, so that the holding rod 1023 can normally used when in the unfolded state or the folded state 1024 can be ensured to be normally used, and the electric quantity of the holding rod 1023 can be fixedly connected to the trailer 102 in a direction of the electric quantity of the trailer is further provided with a power display screen 102, and the electric quantity can be displayed in a direction of the trailer, and the trailer can be displayed at a normal direction, and the trailer, and the information can be displayed by a display screen, and the display speed, and the display device can be 14.

Further, as shown in fig. 3, the handle ring 102 is further provided with a plurality of control buttons 1025, and the plurality of control buttons 1025 are connected with an integrated conducting wire 1026;

specifically, in order to facilitate the adaptation of the grip ring 102 with an external trailer having an electric drive, a plurality of control keys 1025 are further provided on the grip ring 102, where the control keys 1025 include, but are not limited to, a forward/reverse key, a driving/towing switching key, a trailer power-assisted speed control key, a car light on-off key, a horn key, a steering lamp control key, etc., and the key design of the electric bicycle in the prior art can be specifically referred to, and simultaneously, a dial or one of the grip bars 1023 is set to a rotating structure for realizing the control of the vehicle speed, where the dial speed control principle: the electric motor comprises a finger-dialing handle and a finger-dialing position sensor, when the finger-dialing handle is dialed, the finger-dialing position sensor can transmit a finger-dialing position signal to a controller, and the controller adjusts the output power of the electric motor by controlling the output voltage or current of a battery, thereby controlling the speed. The finger position sensor can be realized by adopting a variable resistor or a Hall sensor and the like, converts the finger rotation amplitude into an electric signal and sends the electric signal to the controller.

The principle of rotation speed control of the grip 1023 is the same as that of finger dialing. This is a common prior art, and therefore, the structure thereof is not described in detail herein, and reference is made to the electric door handle of the electric bicycle. An integrated conducting wire 1026 is arranged in the steering rod 101, the integrated conducting wire 1026 enters the loop bar 103 from the steering rod 101 and is led out from the supporting rod 14, wires are prevented from being exposed, the integrated conducting wire 1026 is used for electrically connecting a plurality of control keys 1025, a display screen 1027 and a vehicle speed control structure with an external trailer, the control keys 1025 can also adopt a resistance key mode, the setting of a wire core of the integrated conducting wire can be reduced when the mode is adopted, the resistance value of each key of the resistance keys is different, when the corresponding key is pressed, the corresponding resistance value can be generated, the integrated conducting wire is transmitted to a controller, the controller receives the resistance signal, and the key function is identified and corresponding control is carried out according to the resistance value.

Further, in this embodiment, as shown in fig. 1, 5 and 6, the sleeve 11 is movably connected with the sleeve rod 103, the sleeve rod 103 is displaced and/or rotated relative to the sleeve 11, an arc-shaped pin hole 1032 with a predetermined angle is formed at the bottom of the sleeve rod 103 within the range of the sleeve 11, and a folding bayonet 111 is formed at a position of the sleeve 11 corresponding to the arc-shaped pin hole 1032;

Specifically, the sleeve 11 is movably connected with the sleeve 103, the sleeve 103 can axially move relative to the sleeve 11, the sleeve 103 horizontally rotates relative to the sleeve 11, or the sleeve 103 can axially move relative to the sleeve 11 and simultaneously horizontally rotate relative to the sleeve 11, and the sleeve 103 needs to rotate to drive the steering wheel 1036, so that in order to avoid large-angle steering of the steering wheel 1036 in the use process, an arc-shaped pin hole 1032 of 120-150 degrees is formed in the bottom of the sleeve 103 and is positioned in the sleeving range of the sleeve 11, meanwhile, a folding bayonet lock 111 is arranged at a position, corresponding to the arc-shaped pin hole 1032, of the sleeve 11, the folding bayonet lock 111 has the same structure as the telescopic bayonet lock 1031, the rotation angle of the sleeve 103 is limited through the cooperation of the folding bayonet lock 111 and the arc-shaped pin 1032, and simultaneously the folding bayonet lock 111 can also limit the axial movement of the sleeve 103 relative to the sleeve 11.

It should be noted that, to limit the sliding of the shaft sleeve 11 to the direction of the steering wheel 1036, a plane bearing (not shown in the figure) is embedded in the bottom surface of the shaft sleeve 11, in order to space the plane bearing from the fork frame of the steering wheel, a boss may be disposed at the bottom of the sleeve rod 103, the diameter of the boss is smaller than that of the plane bearing, through the disposition of the boss, the plane bearing is spaced from the fork frame of the steering wheel, and meanwhile, a limit screw (not shown in the figure) is also disposed on the sleeve rod 103, and the end of the limit screw is inserted into the sleeve rod 103 and connected with the fork shaft of the steering wheel 1036, so that the steering wheel 1036 is detachably fixed on the sleeve rod 103 and rotates along with the sleeve rod 103, when the limit screw needs to be taken out, the relative position of the shaft sleeve 11 and the sleeve rod 103 may be changed, the limit screw may be exposed, and the limit screw may be removed to take out the steering wheel 1036.

Further, as shown in fig. 5, the loop bar 103 is further provided with a plurality of folding adjustment holes 1033, the folding adjustment holes 1033 are adapted to the folding bayonet 111, and the loop bar 103 is further provided with a rotation limiting chute 1034 corresponding to and adapted to the folding bayonet 111;

specifically, because the sleeve rod 103 can axially move relative to the shaft sleeve 11, in order to avoid the problem that the sleeve rod 103 cannot be fixed and normal use is affected, a plurality of folding adjustment holes 1033 are further formed in the sleeve rod 103, the folding adjustment holes 1033 are matched with the folding clamping pins 111, when the sleeve rod 103 moves to a preset position, the folding clamping pins 111 can be clamped into the folding adjustment holes 1033, so that the position of the sleeve rod 103 is fixed, then, because the sleeve rod 103 can rotate relative to the shaft sleeve 11, the sleeve rod 103 can drive the folding adjustment holes 1033 to horizontally rotate, the folding clamping pins 111 cannot horizontally rotate, in order to avoid the problem that the folding adjustment holes 1033 are difficult to correspond to the folding clamping pins 111 due to the rotation of the sleeve rod 103, vertical rotation limiting sliding grooves 1034 are further formed in the sleeve rod 103, and the folding clamping pins 111 are matched, when the sleeve rod 103 moves, the folding clamping pins 111 can be positioned in the rotation limiting sliding grooves 1034, the sleeve rod 103 cannot rotate relative to the shaft sleeve 11, and the sleeve rod 103 can be quickly matched with the folding sliding grooves 103 even if the folding sliding grooves 103 are required to be quickly rotated along the rotation limiting sliding grooves 1034.

Further, in this embodiment, as shown in fig. 5, the inner wall of the loop bar 103 is provided with a protruding rotation limiting protrusion 1035, and the outer side wall of the direction bar 101 is provided with a rotation limiting groove 1013 adapted to the rotation limiting protrusion 1035;

specifically, in order to further improve the degree of fit between the steering rod 101 and the loop bar 103, a rotation limiting protrusion 1035 with a predetermined length is disposed on the inner wall of the top end of the loop bar 103, and meanwhile, a rotation limiting groove 1013 disposed along the length of the steering rod 101 is disposed on the outer side wall of the direction, the rotation limiting groove 1013 is adapted to the rotation limiting protrusion 1035, and the synchronicity between the steering rod 101 and the loop bar 103 is ensured by the concave-convex fit between the rotation limiting protrusion 1035 and the rotation limiting groove 1013 and the fit between the telescopic bayonet 1031 and the rotation limiting hole 1021, and meanwhile, the rotation of the steering rod 101 relative to the loop bar 103 after the telescopic bayonet 1031 and the rotation limiting hole 1021 lose the fit is avoided.

Further, in this embodiment, as shown in fig. 1 and fig. 6, the shaft sleeve 11 is rotationally connected with the limiting member 13, one side of the shaft sleeve 11 is further provided with an extended connecting insert 112, an insert sliding slot 113 is provided in the middle of the top surface of the connecting insert 112, an insert rotating shaft hole 114 is provided on a side wall of one end of the connecting insert 112 away from the shaft sleeve 11, a kidney-shaped sliding hole 115 is further provided on a side wall of the connecting insert 112 and is spaced from the insert rotating shaft hole 114, and a control rotating shaft hole 116 is provided below the kidney-shaped sliding hole 115;

Specifically, a connecting insert 112 is arranged on one side of the shaft sleeve 11, the connecting insert 112 and the shaft sleeve 11 are integrally formed, an insert sliding groove 113 arranged along the length direction of the connecting insert 112 is further arranged in the middle of the top surface of the connecting insert 112, an insert rotating shaft hole 114 arranged along the width direction of the connecting insert 112 is formed in the side wall of one end, far away from the shaft sleeve 11, of the connecting insert 112, the insert rotating shaft hole 114 penetrates through two sides of the connecting insert 112, a waist-shaped sliding hole 115 is further formed between the insert rotating shaft hole 114 and the shaft sleeve 11, and a control rotating shaft hole 116 is arranged below the waist-shaped sliding hole 115; the side of the limiting piece 13, which is away from the supporting rod 14, is provided with an end face and a casing 131 with an opening at the bottom face, the connecting plug 112 can be inserted into the casing 131, a plug rotating shaft 133 is arranged in the casing 131, the plug rotating shaft 133 is matched with and rotationally connected with the plug rotating shaft hole 114, the shaft sleeve 11 is vertically rotated relative to the limiting piece 13 through the matching of the plug rotating shaft hole 114 and the plug rotating shaft 133, and therefore the steering rod 101 can be folded relative to the limiting piece 13 under the driving of the shaft sleeve 11, and the middle part of the top face of the casing 131 is further provided with a avoiding groove 132.

Further, as shown in fig. 8, a casing 131 is disposed on a surface of the limiting member 13 facing away from the supporting rod 14, an end surface and a bottom surface of the casing 131 are opened, an avoidance groove 132 is formed in the middle of the top surface of the casing 131, an insert rotating shaft 133 is further connected in the casing 131, the insert rotating shaft 133 is rotationally connected with the insert rotating shaft hole 114, and the shaft sleeve 11 rotates relative to the limiting member 13 through the insert rotating shaft 133;

Specifically, be equipped with the cover shell 131 in the one side that limiting part 13 deviates from bracing piece 14, this cover shell 131 and connect the adaptation of inserting block 112, connect inserting block 112 insert in this cover shell 131, still offered in the middle of the top surface of cover shell 131 and dodge groove 132, should dodge groove 132 and deviate from limiting part 13's one end and cover shell 131 open-ended terminal surface intercommunication, still be equipped with the inserting block pivot 133 in cover shell 131, connect inserting block 112 and rotate with inserting block pivot 133 through inserting block pivot hole 114 and be connected, make axle sleeve 11 can rotate in vertical relative limiting part 13.

Further, as shown in fig. 7, the shaft sleeve 11 is further rotatably connected with a folding control handle 12, and the folding control handle 12 includes: a shank 121, a stem 122; the rod 122 is fixedly connected with the handle 121, a control rotating shaft 123 is arranged at one end of the rod 122 far away from the handle 121, the control rotating shaft 123 is in fit and rotation connection with the control rotating shaft hole 116, a rotating shaft sliding hole 124 is further arranged at one end of the rod 122 provided with the control rotating shaft 123, a first bayonet lock 125 is movably arranged in the rotating shaft sliding hole 124, the rod 122 is positioned in the insert sliding groove 113 and the avoiding groove 132, two ends of the first bayonet lock 125 are respectively positioned in the kidney-shaped sliding hole 115, and the handle 121 drives the first bayonet lock 125 to move in the rotating shaft sliding hole 124 and the kidney-shaped sliding hole 115 when rotating around the control rotating shaft 123;

Specifically, in order to achieve the fixation of the shaft sleeve 11 relative to the limiting member 13, the stability of use is improved, a folding control handle 12 is rotatably connected to the shaft sleeve 11, and the folding control handle 12 includes: the handle 121 is convenient for a user to stir, the handle 122 is used for being rotationally connected with the connecting plug 112, the handle 121 and the handle 122 are integrally formed, one end of the handle 122, which is far away from the handle 121, is connected with a control rotating shaft 123, the control rotating shaft 123 is matched with the control rotating shaft hole 116 and is rotationally connected, the handle 122 can rotate on the connecting plug 112, the handle 122 is positioned in the plug sliding groove 113 and the avoiding groove 132, a rotating shaft sliding hole 124 is further arranged between the control rotating shaft 123 of the handle 122 and the handle 121, a first clamping pin 125 is arranged in the rotating shaft sliding hole 124, the first clamping pin 125 can slide in the rotating shaft sliding hole 124, two ends of the first clamping pin 125 penetrate into the kidney-shaped sliding hole 115, the first clamping pin 125 can only translate and can not move up and down due to the arc-shaped motion track of the handle 122, if the rotating shaft sliding hole 124 is not arranged, and when the rotating shaft sliding hole 124 is arranged, the handle 122 rotates, the rotating shaft sliding hole 124 has enough space to change the relative position of the first clamping pin 125, so that the first clamping pin 125 can avoid the first clamping pin 125 moving transversely at two ends.

Further, as shown in fig. 8, two sides of the open end surface of the sleeve 131 are respectively provided with a first U-shaped hole 134, two sides of the open bottom surface of the sleeve 131 are respectively provided with a second U-shaped hole 135, and when the shaft sleeve 11 rotates relative to the limiting member 13, the first bayonet 125 is snapped into the corresponding first U-shaped hole 134 or the second U-shaped hole 135;

specifically, in order to form a fit with the first bayonet 125, to fix the angle of the shaft sleeve 11 relative to the limiting member 13, a first U-shaped hole 134 is respectively provided at two sides of the open end face of the sleeve 131, and a second U-shaped hole 135 is respectively provided at two sides of the open bottom face of the sleeve 131, when the connection plug 112 is at a first angle with the limiting member 13, the first bayonet 125 is clamped into the first U-shaped hole 134, limiting is achieved, when the limiting is required to be released, the handle 121 can be shifted to drive the first bayonet 125 to separate from the first U-shaped hole 134, at this time, the shaft sleeve 11 can rotate relative to the limiting member 13, when the shaft sleeve 11 is at a second angle relative to the limiting member 13, the first bayonet 125 can be clamped into the second U-shaped hole 135, so that limiting at the second angle is achieved, and when the limiting is required to be released. Wherein the spacing angle between the first U-shaped aperture 134 and the second U-shaped aperture 135 is equal to 90 °.

Further, as shown in fig. 7, the bottom surface of the connecting insert 112 is fixedly connected with a first tension spring 117, the end of the first tension spring 117, which is connected to the connecting insert 112, is far away from the end, which is connected to the rod 122, of the control shaft 123, specifically, in order to achieve automatic matching between the first bayonet 125 and the first U-shaped hole 134 and the second U-shaped hole 135, the bottom surface of the connecting insert 112 is fixedly connected with a first tension spring 117, the end of the first tension spring 117, which is far away from the connecting insert 112, is fixedly connected with the end, which is provided with the control shaft 123, of the rod 122, wherein, as force is required to act on the first bayonet 125 all the time, and the first bayonet 125 is moved in a direction away from the shaft sleeve 11, so that the connecting position of the first tension spring 117 and the rod 122 is required to be on a surface, which is far away from the shaft 122, of the shaft 11, thereby, the rod 122 is pulled by the first bayonet 125 is pushed to move in a direction away from the shaft 11, and further, so that when the shaft sleeve 11 and the limiting member 13 are at a first angle or a second angle, the first U-shaped hole 134 can be snapped into the corresponding to the first U-shaped hole 135.

It should be noted that the first tension spring 117 may also be disposed between the handle 121 and the limiting member 13, and specifically, if the handle 121 is required to be inclined toward the supporting rod 14 so that the first bayonet 125 moves toward the supporting rod 14, the first tension spring 117 may also be disposed between the handle 121 and the limiting member 13.

Further, as shown in fig. 1 and 9, the same ends of the two support rods 14 are respectively rotatably connected with the limiting member 13, one end of each support rod 14 away from the limiting member 13 is respectively rotatably connected with a connecting sleeve member 141, and opposite faces of the two connecting sleeve members 141 are inclined by a predetermined angle in opposite directions, so that one end of the two support rods 14 away from the connecting sleeve members 141 horizontally rotates around the connecting sleeve member 141 to form a triangular structure;

specifically, the side of the limiting piece 13 facing away from the casing 131 is opened, the same ends of the two supporting rods 14 are respectively inserted into the side of the opening of the limiting piece 13 and are rotationally connected with the limiting piece 13, so that the two supporting rods 14 can respectively rotate relative to the limiting piece 13, the maximum angle of the outward rotation is limited by the side wall of the limiting piece 13, meanwhile, the end of the supporting rod 14, which is far away from the limiting piece 13, is rotationally connected with the connecting sleeve piece 141, in order to enable the supporting rod 14 to horizontally rotate a certain angle relative to the connecting sleeve piece 141 in the opposite direction, the opposite sides of the two connecting sleeve pieces 141 are located at the end rotationally connected with the supporting rod 14 and are respectively inclined at a preset angle, the ends of the two supporting rods 14, which are far away from the connecting sleeve piece 141, can be mutually close to or mutually far away from each other, a triangular structure is formed, the stability is stronger, and if the two ends are mutually far away from each other, a rectangular structure or a positive trapezoid structure is formed, and the triangular structure is preferable in the application, so that stability is ensured.

It should be noted that, the opposite sides of the two connecting members 141 may be provided with openings to enable the two support rods 14 to rotate in opposite directions;

further, as shown in fig. 9, a connecting shaft 142 is disposed at one end of the connecting sleeve 141 far away from the supporting rod 14, two ends of the connecting shaft 142 respectively penetrate through two sides of the connecting sleeve 141, a displacement sliding hole 143 is formed in the middle of the connecting sleeve 141, a second bayonet lock 144 is disposed in the displacement sliding hole 143, and two second tension springs 145 are connected between the second bayonet lock 144 and the connecting shaft 142;

specifically, for improving the stability in use and the result of use of multipurpose folding trailer handle, the one end that the bracing piece 14 was kept away from to the connection external member 141 is equipped with connecting axle 142, this connecting axle 142 is used for rotating with external trailer and is connected, make bracing piece 14 can rotate folding relatively external trailer, displacement slide hole 143 has still been seted up at the middle part of connection external member 141, and be equipped with second bayonet lock 144 in the displacement slide hole 143, this second bayonet lock 144 can slide in displacement slide hole 143, for making second bayonet lock 144 can realize by oneself realizing spacing with external trailer cooperation, still be equipped with two second extension springs 145 between second bayonet lock 144 and connecting axle 142, through the pulling force of two second extension springs 145, make second bayonet lock 144 remove to the direction that connecting axle 142 is located all the time, and then make the position correspond the back, second bayonet lock 144 can realize spacing with external trailer cooperation.

Further, the first bayonet 125 is connected with two linkage lines (not shown in the figure), and one ends of the two linkage lines, which are far away from the first bayonet 125, are respectively connected with two second bayonet 144, so that when the first bayonet 125 is driven to move by the folding control handle 12, the second bayonet 144 is linked with the first bayonet 125 through the linkage lines;

specifically, in order to realize synchronous release of the first bayonet 125 and the second bayonet 144, a linkage line is respectively connected between the first bayonet 125 and the two second bayonet 144, and the first bayonet 125 and the second bayonet 144 can be linked through the arrangement of the linkage line, for example, when the handle 121 is stirred, the first bayonet 125 is driven to move, and at the moment, the second bayonet 144 is synchronously pulled due to the linkage line between the first bayonet 125 and the second bayonet 144, and simultaneously the second tension spring 145 is stretched, so that the linkage between the first bayonet 125 and the second bayonet 144 is realized; when the handle 121 loses the external force, the second tension spring 145 loses the limiting force, and drives the second bayonet 144 to move back under the restoring force of the second tension spring 145, and the first bayonet 125 is driven by the rod 122 to move back under the action of the first tension spring 117.

It should be noted that, the fixing modes of the first bayonet lock 125, the second bayonet lock 144 and the rotating shaft in the present application all adopt snap springs, that is, the two ends of the bayonet lock and the rotating shaft are respectively provided with the snap springs, and the stop is realized through the cooperation between the snap springs and the structure, so as to avoid the generation of unnecessary displacement.

Folding process of multipurpose folding trailer handle: taking fig. 1 as an example, this is the first state; when the folding is needed, the handle 121 is stirred at first, the rod 122 rotates around the control rotating shaft 123 under the drive of the handle 121, the rod 122 drives the first bayonet lock 125 to move to separate from the first U-shaped hole 134, at the moment, the shaft sleeve 11 can rotate vertically relative to the limiting piece 13 due to the fact that the limit of the first bayonet lock 125 is lost between the shaft sleeve 11 and the limiting piece 13, the shaft sleeve 11 drives the sleeve rod 103 to rotate to enable the sleeve rod 103 to be in a parallel state with the supporting rod 14, axial movement of the sleeve rod 103 relative to the shaft sleeve 11 can be determined according to the requirement, if the sleeve rod 103 needs to be moved, the folding bayonet lock 111 can be pulled to separate from the cooperation with the arc-shaped pin hole 1032, at the moment, the sleeve rod 103 can be moved axially relative to the shaft sleeve 11, after the sleeve rod is moved to a proper position, the folding bayonet lock 111 is released to cooperate with the folding adjusting hole 1033 to fix the sleeve rod 103, and the folding of the multipurpose folding trailer handle is completed; it should be noted that, since the steering wheel 1036 is provided with a front fork, the shaft sleeve 11 rotates relative to the limiting member 13 in the first state, and after the first bayonet 125 enters the second U-shaped hole 135, the side wall of the front fork is attached to the bottom surface of the limiting member 13, and the limiting member 13 limits the steering wheel 1036 to rotate under the influence of gravity or not rotate in the initial stage of folding.

A second embodiment of the present utility model, as shown in fig. 10, provides a folding trailer comprising a folding body 15, a multipurpose folding trailer handle as described in any of the above embodiments; the folding car body 15 can be folded and contracted, electric wheels 153 are respectively arranged on two sides of the rear end of the folding car body 15, the electric wheels 153 are used for driving the folding car body 15 to advance after being electrified, a controller 151 and a power supply 152 are further arranged on the folding car body 15, the power supply 152 is used for providing power for the controller 151 and the electric wheels 153, the controller 151 is used for receiving instructions to control the work of the power supply 152 and the electric wheels 153, auxiliary wheels 154 are respectively detachably connected on two sides of the front end of the folding car body 15, bearing bases 155 are respectively arranged on two sides of the front end of the folding car body 15, and a supporting rod 14 of the multipurpose folding trailer handle is connected with the bearing bases 155;

specifically, the folding trailer is electrically driven and can be contracted by folding, and comprises: folding body 15 and multipurpose folding trailer handle as in any of the above embodiments; the foldable bicycle body 15 is provided with a controller 151 and a power supply 152 electrically connected with the controller 151, and meanwhile, two sides of the rear end of the foldable bicycle body 15 are respectively provided with an electric wheel 153, the electric wheel 153 is electrically connected with the controller 151, the electric wheel 153 is a wheel with a motor arranged therein, the electric wheel 153 is driven to advance or retreat by the motor arranged therein, and the electric wheel 153 is also provided with a brake structure such as a disc brake or a drum brake, wherein a shell of the brake structure is fixedly connected with a fork of the electric wheel 153 to prevent the shell from rotating along with the electric wheel 153; please refer to the driving wheel of the electric bicycle in the prior art for details; the power wheel 153 is controlled by the controller 151, the power supply 152 is used for providing power for the power wheel 153 so that the power wheel 153 can run, meanwhile, auxiliary wheels 154 are respectively arranged on two sides of the front end of the folding car body 15, bearing bases 155 are respectively connected on two sides of the front end of the folding car body 15, the bearing bases 155 are used for connecting a car frame and rotationally connecting the car frame with a connecting sleeve 141 of a multipurpose folding trailer handle, and the supporting rod 14 can vertically rotate relative to the folding car body 15 through the connecting sleeve 141 to achieve a folding effect.

As shown in fig. 10, 15, 16 and 17, the controller 151 further draws a wire extending to the front end of the folding cart body 15, and is used for being connected with the integrated wire 1026 of the multipurpose folding cart handle, so that the movement of the folding cart can be controlled by the multipurpose folding cart handle, when a certain control key 1025 is pressed, a corresponding signal is generated, the controller 151 receives the signal through the wire, and performs corresponding control, if the forward key is pressed, the controller 151 receives the control signal of the forward key, enters the forward mode, the controller 151 controls the motor in the electric wheel 153 to rotate positively after the signal of the vehicle speed control structure, and if the forward key is pressed, the motor rotates reversely; the multipurpose folding trailer handle is provided with a foot brake 146, and a stay wire of the foot brake 146 is connected with a mechanical brake structure of an electric wheel 153, so that braking can be realized through foot stepping, and an electronic brake can be added for assisting in a braking mode, which is the prior art, and therefore, the description is omitted here.

Further, as shown in fig. 14, the auxiliary wheel 154 has a height smaller than that of the power wheel 153 and the steering wheel 1036;

specifically, because the electric wheel 153 is disposed at the rear end of the folding cart 15, when the folding cart 15 is used in cooperation with the multipurpose folding cart handle, three wheels are disposed between the electric wheel 153 and the steering wheel 1036, and the height of the auxiliary wheel 154 is smaller than the height of the electric wheel 153 and the steering wheel 1036, so that the auxiliary wheel 154 is in a ground-free state, and meanwhile, the auxiliary wheel 154 is not excessively high, and the cart is lifted or the friction force between the electric wheel 153 and the ground is increased to avoid slipping, and the folding cart can be supported to one side for rollover while the cart is lifted or the friction force between the electric wheel 153 and the ground is avoided.

The auxiliary wheel 154 may be configured as a telescopic structure or a rotating structure, wherein the telescopic structure is that the telescopic structure can extend or retract on the folding bicycle body 15 to realize a ground-leaving effect; the rotating structure is arranged on the outer side surface of the bearing base 155 through a rotating shaft and can vertically rotate on the outer side surface of the bearing base 155, so that the ground separation effect is realized.

It should be noted that, in order to avoid the rollover situation, the two steering wheels 1036 may be further arranged at a certain distance between the two steering wheels 1036, so that the auxiliary wheels 154 may be generated, and the rollover risk may be reduced.

Further, as shown in fig. 10, one end of the bearing base 155 is provided with a folding seat 156 with an end face and a top face open, the connecting shaft 142 of the connecting sleeve 141 is rotatably connected with the folding seat 156, two sides of the top face of the folding seat 156 are respectively provided with a third U-shaped hole 157, the third U-shaped holes 157 are used for being matched and limited with the second bayonet 144, two sides of the end face of the folding seat 156 are respectively provided with a C-shaped hole 158, the C-shaped hole 158 is used for being matched and limited with the second bayonet 144, and the length of the C-shaped hole 158 is greater than the width of the second bayonet 144;

Specifically, in order to improve the experience and stability of use, a folding seat 156 with an opening on an end face and a top face is provided at a bearing base 155 facing to an end face of the multipurpose folding trailer handle, wherein a connecting shaft 142 of a connecting sleeve 141 is rotatably connected with the folding seat 156, a third U-shaped hole 157 and a C-shaped hole 158 are provided on the folding seat 156 and are used for cooperating with a second bayonet lock 144, so as to realize fixed limit of the connecting sleeve 141 and the folding trailer body 15, avoid rotation when rotation is not needed, and influence use, wherein the length of the C-shaped hole 158 may be greater than or equal to the width of the second bayonet lock 144, and in this embodiment, the length of the C-shaped hole 158 is preferably greater than the width of the second bayonet lock 144, so that when the second bayonet lock 144 is located in the C-shaped hole 158, the connecting sleeve 141 can rotate downwards by a certain angle relative to the folding seat 156, thereby driving on an uneven road surface, and when the auxiliary wheel is supported by the auxiliary wheel, the steering wheel 1036 is further enabled to always contact the ground, and the direction is prevented from being out of control.

Further, a folding seat 16 is detachably mounted above the front end of the folding bicycle body 15, a seat support 161 is arranged at the bottom of the folding seat 16, and the seat support 161 is connected with the folding bicycle body 15;

Specifically, in order to improve the comfort of a user when driving the folding trailer, the folding seat 16 is detachably mounted above the front end of the folding vehicle body 15, and in order to improve the supporting force of the folding seat 16, base supporting pieces are arranged on the bottom surfaces of two sides of one end of the folding seat 16 far away from the front end of the folding vehicle body 15, and the seat supporting pieces 161 are used for being connected with the frame of the folding vehicle body 15, so that the supporting force of the folding seat 16 is improved, and the user can sit on the folding seat 16, and the experience of the user is improved.

Wherein a pedal may be detachably provided between the two support bars 14 for a user to stand on the multipurpose folding mop handle.

The application realizes different using effects through different folding modes, and specifically comprises the following steps:

first, the driving posture as shown in fig. 11, i.e., the first state; when the support bar 14 is parallel to the length direction of the vehicle body and the loop bar 103 and the support bar 14 are in an included angle state, a user can stand on the support bar 14 and control the running of the folding vehicle body 15 through the control keys 1025 of the handle ring 102, so that the functions of driving and carrying people are realized.

In the second drawing posture as shown in fig. 12, when the battery is not powered or the driving function is not needed in the driving posture, the handle 121 is pulled to drive the rod 122 to rotate around the control shaft 123, the rod 122 drives the first bayonet lock 125 to move so as to separate from the first U-shaped hole 134, and meanwhile, the first bayonet lock 125 drives the second bayonet lock 144 to separate from the C-shaped hole 158 through the linkage line, at this time, the first bayonet lock 125 is in a dislocation state with the second U-shaped hole 135 because the limit of the first bayonet lock 125 is lost between the shaft sleeve 11 and the limiting member 13, the shaft sleeve 11 can rotate vertically relative to the limiting member 13, the shaft sleeve 11 drives the sleeve rod 103 to rotate so as to position the sleeve rod 103 below the limiting member 13, at this time, because the sleeve rod 103 does not move relative to the shaft sleeve 11, the steering wheel 1036 interferes with the limiting member 13, the sleeve rod 103 cannot be parallel to the supporting rod 14, i.e. does not rotate in place, under this condition, the first bayonet lock 125 is in a dislocation state with the second U-shaped hole 135, to avoid this, the folding latch 111 may be pulled to disengage from the arc-shaped pin hole 1032, then a force is applied to the lever 103 to move relative to the sleeve 11, driving the steering wheel 1036 away from the limiting member 13, after the interference between the steering wheel 1036 and the limiting member 13 is lost, the lever 103 and the supporting rod 14 are in a parallel state, after the lever 103 rotates in place, the first latch 125 corresponds to the second U-shaped hole 135, if the handle is released, the first latch 125 is automatically snapped into the second U-shaped hole 135 under the action of the first tension spring 117, so as to form a fit, thereby realizing the fixation of the lever 103 in this state, and simultaneously, because the second latch 144 is disengaged from the C-shaped hole 158, after the limitation of the second latch 144 is lost, the supporting rod 14 can rotate relative to the folding car body 15 through the connecting sleeve 141 and is in an inclined state, the conversion of the dragging gesture is finished so as to facilitate dragging, wherein under the state, the dragging power assisting speed control key in the control key 1025 can be shifted so as to realize the power assisting effect. It should be noted that, in this state, in order to promote the labor-saving property of towing, the position of the sleeve 11 relative to the sleeve 103 needs to be located in the middle of the sleeve 103, in this position, the situation that the gravity center of the multipurpose folding trailer handle is biased to the rear due to the bias of the steering wheel 1036, so that more effort is brought to towing can be avoided, the sleeve 103 is fixed by the cooperation of the folding bayonet 111 and the folding adjusting hole 1033 located in the middle of the sleeve 103, and meanwhile, the steering rod 101 can be pulled out according to the use requirement, so as to prolong the length of the multipurpose folding trailer handle, and facilitate towing.

Thirdly, as shown in fig. 13, the support bar 14 needs to be further rotated in the towing posture to make the support bar vertical relative to the folding cart body 15, the relative position of the sleeve 11 and the sleeve 103 is at the top end of the sleeve 103, and the sleeve 103 is fixed by matching the folding bayonet 111 with the folding adjusting hole 1033 at the top of the sleeve 103, when the sleeve 11 is in the position, the steering wheel 1036 is grounded to support the folded trailer, and meanwhile, when the folding trailer is folded, the folding seat plate needs to be detached to avoid influencing folding.

It should be noted that, the first bayonet lock 125 and the second bayonet lock 144 may be controlled separately to realize the release of the release limit, that is, the release limit of the first bayonet lock 125 may not drive the second bayonet lock 144 to release the limit, and meanwhile, since the second bayonet lock 144 is provided with two connecting members 141 and is respectively located on the two connecting members 141, if the two connecting members 141 are separated by a longer distance, and the two second bayonet locks 144 release the limit separately, the release limit operation of the second bayonet lock 144 may be inconvenient, because two hands are required to release simultaneously, and in order to avoid inconvenience for use, the second bayonet lock 144 may be configured as a structure such as the telescopic bayonet lock 1031, and disposed on the opposite side of the two folding seats 156, the head portion of the telescopic bayonet lock 1031 is ejected and abutted against the top surface or the bottom surface of the connecting member 141, so as to realize the release limit, and when the release limit is required, only the head portion of the telescopic bayonet lock 1031 is required to be retracted by holding rotation when the release limit is required.

When the second bayonet lock 144 is replaced by the telescopic bayonet lock 1031, only one telescopic bayonet lock 1031 needs to be disposed on each folding seat 156, and the position of the telescopic bayonet lock 1031 is located at the intersection of the bottom line of the folding posture and the top line of the riding posture of the connecting sleeve 141, so that the limit effect of one telescopic bayonet lock 1031 can be achieved in both postures.

The present utility model also provides a third embodiment comprising a folding bodywork 15 and a multipurpose folding trailer handle, the difference being that the multipurpose folding trailer handle comprises: a steering rod 101, a handle ring 102, a shaft sleeve 11 and a support rod 14; the shaft sleeve 11 is rotatably connected with the steering rod 101, the shaft sleeve 11 and the steering rod 101 can only rotate in the horizontal direction and cannot change the relative position, the steering rod 101 can be set to be telescopic or non-telescopic according to the requirement, the shaft sleeve 11 and the supporting rod 14 are fixedly connected, the shaft sleeve 11 and the supporting rod 14 can be integrally formed or welded, and the other modes are adopted, one end of the supporting rod 14 away from the shaft sleeve 11 is welded or clamped and fixed with the bearing base 155 of the folding cart body 15, in the third embodiment, the multi-purpose folding cart handle cannot be folded, and at the moment, the limiting piece 13, the connecting sleeve member 141, the first clamping pin 125, the second clamping pin 144 and the folding control handle 12 can be omitted.

Therefore, the multipurpose folding control handle can be suitable for all folding car bodies with or without electric drive in the market, wherein the folding car bodies without electric drive can be towed through the multipurpose folding control handle, and the folding control handle with electric drive can be used for driving or assisting in towing.

In summary, the shaft sleeve and the limiting piece are arranged to be rotationally connected, so that the multipurpose folding trailer handle has various forms, can be converted according to the use condition, improves the practicability, can be adapted to a folding vehicle body with electric drive or a common folding vehicle body, is not limited, expands the adaptation range, enables the folding vehicle body to have the functions of electric manned object driving, electric power assisted dragging and folding storage, has the characteristics of light weight, portability and convenient movement, and meets the use requirements of various scenes.

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 multipurpose folding trailer handle comprising: the steering rod assembly, the bottom of steering rod assembly is connected with at least one direction wheel, the direction wheel is along with the steering rod assembly rotates, the bottom of steering rod assembly is located the top of direction wheel is equipped with the axle sleeve, the axle sleeve is used for making the steering rod assembly rotates, one side of axle sleeve is connected with the locating part, be connected with a bracing piece on the locating part at least.

2. The multipurpose folding trailer handle as claimed in claim 1, wherein said steering rod assembly comprises: the telescopic steering device comprises a sleeve rod and a steering rod, wherein the steering rod is arranged in the sleeve rod in a telescopic mode, a clamping device which limits the axial movement and radial rotation of the steering rod is arranged between the steering rod and the sleeve rod, the top end of the steering rod is further connected with a handle ring, and the handle ring drives the sleeve rod to rotate through the steering rod.

3. The multipurpose folding trailer handle as claimed in claim 2, wherein said snap-in means comprises: the telescopic clamping pin is arranged at the top of the loop bar, and the telescopic clamping hole is arranged on the side wall of the steering rod and matched with the telescopic clamping pin.

4. The multipurpose folding trailer handle as claimed in claim 2, wherein a mounting hole is formed in the bottom of the handle ring, the top end of the steering rod is inserted into the mounting hole in the bottom of the handle ring, a rotation limiting bayonet lock is formed on the top end side wall of the steering rod, and a plurality of rotation limiting holes matched with the rotation limiting bayonet lock are formed on the side wall of the mounting hole in the bottom of the handle ring.

5. The multipurpose folding trailer handle as claimed in claim 2, wherein the handle ring is in an inverted trapezoid shape, folding grooves are respectively formed on two sides of the handle ring, a holding rod is rotatably connected to the same ends of the two folding grooves, and a limiting device is further arranged at one end of the holding rod connected with the folding grooves, and is used for limiting when the holding rod is contained in the folding grooves or when the holding rod is horizontal relative to the handle ring.

6. The multipurpose folding trailer handle as claimed in claim 2, wherein said handle ring is further provided with a plurality of control keys, a plurality of said control keys being connected with an integrated wire.

7. The multipurpose folding trailer handle as claimed in claim 2, wherein the sleeve is movably connected with the sleeve rod, the sleeve rod is displaced and/or rotated relative to the sleeve rod, an arc-shaped pin hole with a predetermined angle is formed in the bottom of the sleeve rod within the range of the sleeve rod, and a folding bayonet is formed at a position of the sleeve rod corresponding to the arc-shaped pin hole.

8. The multipurpose folding trailer handle as claimed in claim 7, wherein the loop bar is further provided with a plurality of folding adjustment holes, the folding adjustment holes are matched with the folding bayonet, and the loop bar is further provided with a rotation limiting chute which corresponds to and is matched with the folding bayonet.

9. The multipurpose folding trailer handle as claimed in claim 2, wherein the inner wall of the loop bar is provided with a protruding rotation limiting protrusion, and the outer side wall of the steering bar is provided with a rotation limiting groove adapted to the rotation limiting protrusion.

10. The multipurpose folding trailer handle as claimed in claim 1, wherein the shaft sleeve is rotatably connected with the limiting member, one side of the shaft sleeve is further provided with an extended connecting plug, a plug sliding groove is formed in the middle of the top surface of the connecting plug, a plug rotating shaft hole is formed in the side wall of one end of the connecting plug, which is far away from the shaft sleeve, a waist-shaped sliding hole is formed in the side wall of the connecting plug, which is arranged at an interval with the plug rotating shaft hole, and a control rotating shaft hole is formed below the waist-shaped sliding hole.

11. The multipurpose folding trailer handle as claimed in claim 10, wherein a casing is provided on a side of the limiting member facing away from the supporting rod, an end surface and a bottom surface of the casing are opened, an avoidance groove is provided in the middle of the top surface of the casing, an insert rotating shaft is further connected in the casing, the insert rotating shaft is rotatably connected with the insert rotating shaft hole, and the shaft sleeve rotates relative to the limiting member through the insert rotating shaft.

12. The multipurpose folding trailer handle as claimed in claim 11, wherein said sleeve is further rotatably connected with a folding lever, said folding lever comprising: a handle portion, a stem portion; the utility model provides a handle, including handle, pole portion, handle, control pivot, pole portion, control pivot hole, pivot, pole portion is located the pole portion is kept away from the one end of handle is equipped with the control pivot, the control pivot with the one end of control pivot still is equipped with the pivot slide hole, pivot slide hole internalization is equipped with first bayonet lock, pole portion is located the inserts spout with dodge the inslot, the both ends of first bayonet lock are located respectively in the kidney-shaped slide hole, the handle winds when the control pivot rotates drive first bayonet lock in the pivot slide hole with kidney-shaped slide hole is internal to be removed.

13. The multipurpose folding trailer handle as claimed in claim 12, wherein a first U-shaped hole is formed on two sides of an end surface of the casing opening, a second U-shaped hole is formed on two sides of a bottom surface of the casing opening, and the first bayonet lock is snapped into the corresponding first U-shaped hole or the second U-shaped hole when the sleeve rotates relative to the stopper.

14. The multipurpose folding trailer handle as claimed in claim 13, wherein the bottom surface of the connection plug is further fixedly connected with a first tension spring, and one end of the first tension spring, which is far away from the connection plug, is fixedly connected with one end of the rod portion, which is provided with the control rotation shaft.

15. The multipurpose folding trailer handle as claimed in claim 14, wherein the same ends of the two support rods are respectively rotatably connected with the limiting members, and one end of each support rod far away from the limiting members is respectively rotatably connected with a connecting sleeve member, and opposite faces of the two connecting sleeve members are inclined by a predetermined angle in opposite directions, so that one end of the two support rods far away from the connecting sleeve members horizontally rotates around the connecting sleeve member to form a triangular structure.

16. The multipurpose folding trailer handle as claimed in claim 15, wherein a connecting shaft is arranged at one end of the connecting sleeve, which is far away from the supporting rod, two ends of the connecting shaft respectively penetrate through two sides of the connecting sleeve, a displacement sliding hole is formed in the middle of the connecting sleeve, a second bayonet lock is arranged in the displacement sliding hole, and two second tension springs are connected between the second bayonet lock and the connecting shaft.

17. The multipurpose folding trailer handle as claimed in claim 16, wherein the first bayonet is connected with two linkage lines, and one ends of the two linkage lines away from the first bayonet are respectively connected with two second bayonet, so that when the first bayonet is driven to move by the folding control handle, the second bayonet is linked with the first bayonet through the linkage lines.

18. A folding trailer comprising a folding body, a multipurpose folding trailer handle as claimed in any one of claims 1 to 17; the folding car body is foldable and contractible, the electric power wheel is installed respectively to the rear end both sides of folding car body, the electric power wheel is used for driving after the circular telegram folding car body marches, still be equipped with controller and power on the folding car body, the power is used for the controller with the electric power wheel provides electric power, the controller is used for receiving instruction control the power with the work of electric power wheel, the front end both sides of folding car body can be dismantled respectively and be connected with the auxiliary wheel, the front end both sides of folding car body still are equipped with the bearing base respectively, the bracing piece of multipurpose folding trailer handle with the bearing base is connected.

19. The folding trailer of claim 18 wherein the auxiliary wheels have a height that is less than the heights of the power wheels and the steering wheels.

20. The folding trailer of claim 18, wherein one end of the bearing base is provided with a folding seat with an end face and a top face open, the connecting shaft of the connecting sleeve is rotatably connected with the folding seat, the two sides of the top face of the folding seat are respectively provided with a third U-shaped hole, the third U-shaped holes are used for being matched and limited with the second bayonet, the two sides of the end face of the folding seat are respectively provided with a C-shaped hole, the C-shaped holes are used for being matched and limited with the second bayonet, and the length of the C-shaped holes is larger than the width of the second bayonet.

21. The folding trailer of claim 18, wherein a folding seat is removably mounted above the front end of the folding body, the bottom of the folding seat being provided with a seat support, the seat support being connected to the folding body.