CN219584379U - Folding electric trailer with retractable movable wheels - Google Patents

Abstract

The application discloses a foldable electric trailer with telescopic movable wheels, comprising: a foldable car body and a control assembly; a follower wheel is installed at the bottom of the rear end of the foldable car body, at least one telescopic sleeve rod is connected to the front end of the foldable car body, and the telescopic sleeve The protruding end of the rod is connected with a steering assembly, and the lower part of the steering assembly is connected with a driving assembly. The steering assembly and the driving assembly are connected in transmission. connect. With the above design, by rotating and connecting the telescopic sleeve rod at the front end of the folding car body, the extension of the telescopic sleeve rod drives the steering component and the driving component to move forward to realize the manned function, retract the telescopic sleeve rod when not in use, and reduce the occupancy The space can be freely driven and towed according to the needs of use. It is easy to operate and easy to use. It realizes a brand-new folding electric trailer with various forms and functions. It is novel and attractive, and enhances product competitiveness. .

Description

A folding electric trailer with retractable mobile wheels

technical field

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

Background technique

Folding trailer, a foldable and towable cargo vehicle, is widely used for outdoor activities or In short-distance transportation.

When traditional trailers are used, they need to be dragged by manpower, which is time-consuming and labor-intensive, especially inconvenient when carrying goods uphill; for this reason, the prior art has also designed a power-assisted trailer, and the patent No. is CN202220922980.0 (power-assisted trailer). Electric wheels and control devices are installed on the car body to realize the electric power assist effect when towing the trailer, and improve the labor-saving and convenience of the trailer when it is in use. However, this solution still has disadvantages. Although it can save energy to a certain extent, its Use still needs manpower tow to just go, and existing trailer mostly does not possess the function of manned, driving.

Therefore, there is an urgent need to design a foldable electric trailer with retractable mobile wheels to overcome the above-mentioned one or more deficiencies in the prior art.

Utility model content

The technical solution adopted by the utility model to achieve the above-mentioned technical purpose is: a folding electric trailer with telescopic movable wheels, which is characterized in that it includes: a folding car body and a control assembly; Follower wheels, the front end of the folding car body is connected with at least one telescopic sleeve rod, the extended end of the telescopic sleeve rod is connected with a steering assembly, and the lower part of the steering assembly is connected with a driving assembly, and the steering assembly It is transmission connected with the driving assembly, and the steering assembly controls the steering of the driving assembly. Both the steering assembly and the driving assembly are located at the front end of the folding car body. The limit device is used to limit the expansion and contraction of the telescopic sleeve rod. When the telescopic sleeve rod is extended, it synchronously drives the steering assembly and the driving assembly to translate in a direction away from the folding car body. The control assembly Located on the folding vehicle body, the driving assembly and the steering assembly are respectively electrically connected to the control assembly.

In a preferred embodiment, there are two telescopic sleeve rods, which are respectively located at the front end of the folding car body, and each of the telescopic sleeve rods includes: an outer rod and an inner rod; the inner rod is slidably set In the outer rod, one end of the inner rod is rotatably connected to the steering assembly, and the front end of the outer rod is fixedly connected to a connecting seat, and the connecting seat is rotatably connected to the front end of the folding car body, The outer rod is rotatably connected to the folding vehicle body and the steering assembly through the connecting seat.

In a preferred embodiment, the bottoms on both sides of the folding vehicle body are fixed with a first fixing piece for fixing the telescopic sleeve rod, and the position of the first fixing piece is the same as that of the telescopic sleeve rod. Corresponding in length, the tops of both sides of the folding car body are rotated and provided with a second fixing piece for fixing the telescopic sleeve rod, and the position of the second fixing piece is opposite to the folding car body with the telescopic sleeve rod Corresponds to the length after the body rotates a predetermined angle.

In a preferred embodiment, both the first fixing part and the second fixing part are provided with fixing grooves, and the end of the outer rod away from the steering assembly is provided with an extension block, and the extension block is connected to the The above-mentioned fixing groove is adapted, and the extension block is also provided with a sleeve rod limiting device for restricting the rotation of the telescopic sleeve rod.

In a preferred embodiment, the drive assembly includes: a drive wheel; there are two drive wheels, a transmission member is connected between the two drive wheels, and the steering assembly rotates with the transmission member connected, used to drive the two drive wheels to rotate synchronously, the transmission member includes a first transmission rod and a second transmission rod which is arranged at both ends of the first transmission rod and respectively connected in rotation with the first transmission rod One end of the two second transmission rods away from the first transmission rod is rotatably connected to a third transmission rod, and the end of the third transmission rod away from the second transmission rod is rotatably connected to the corresponding drive wheel .

In a preferred embodiment, the steering assembly includes: a control rod, the bottom of the control rod is sheathed with a connection assembly, and the connection assembly is used to connect with the telescopic sleeve rod and support the control rod, The control rod can rotate relative to the connection assembly, the drive assembly is located below the connection assembly and is rotatably connected to the bottom surface of the connection assembly, the bottom end surface of the control rod is also connected to a swing arm, and the swing arm The arm is rotatably connected to the drive assembly, the control rod drives the drive assembly to rotate through the swing arm, and a direction rod is also movable in the control rod.

In a preferred embodiment, the connecting assembly includes: a foldable part, the foldable part is arranged on the outside of the control rod, the two ends of the foldable part are respectively connected to the first connecting rod in rotation, the two ends One end of each of the first connecting rods away from the folding member is respectively rotatably connected to a second connecting rod, the drive assembly is rotatably connected to the second connecting rod, and the side wall of the second connecting rod is connected to the second connecting rod. The telescopic sleeve rod is rotatably connected, and a connection limiting device for restricting the rotation of the first connecting rod is also provided on the folding member.

In a preferred embodiment, the connection limiting device includes: a pressing rod, a pressing block is arranged in the middle of the pressing rod, and the pressing rod is slidably arranged in the middle of the folding part, and the pressing rod The top of the top is detachably connected with a pressing handle; the two ends of the folding part are respectively slidingly provided with limit pins, the pressing rod is located between the two limit pins, and the opposite ends of the two limit pins It is inclined, and a return spring is respectively arranged in the two limit pins, and the limit pin moves toward the direction of the pressing rod through the return spring, and the two first connecting rods and the folding member A pin hole corresponding to and adapted to the limit pin is opened in one end of the connection.

In a preferred embodiment, a rotation limiting device is movably provided in each of the second connecting rods, and the rotation limiting device includes: a rotation limiting pin block, an unlocking contact rod, a rotation limiting return spring, and the rotation limiting pin The first end of the block passes through the side wall connected by the second connecting rod and the telescopic sleeve rod, the tail end of the rotation limiting pin block is provided with a guide column, and the rotation limiting return spring is arranged on the guide column On the outside, the unlocking feeler rod is in an "L" shape, one end of the unlocking feeler rod is fixedly connected to the rotation limiting pin block, the other end of the unlocking feeler rod protrudes from the second connecting rod, and the limiter The first end of the revolving pin block is also provided with an escape hole, and when the second connecting rod and the telescopic sleeve rod are both at the level, the reversing pin block extends into the reversing pin block under the push force of the reversing spring. In the telescopic sleeve rod, the rotation of the telescopic sleeve rod and the second connecting rod is restricted through cooperation with the telescopic sleeve rod.

In a preferred embodiment, insert blocks are respectively provided at the bottoms on both sides of the front end of the folding vehicle body, and socket holes are provided at positions opposite to the insert blocks on each of the second connecting rods.

In a preferred embodiment, the top of the direction rod exposed outside the control rod is T-shaped, and the two ends of the top of the direction rod are respectively connected with grip rods, and the two grip rods are connected with the direction rod. The outer side of one end connected by the rod is respectively provided with a first sleeve slidingly, and the top surface of the direction rod is provided with a plurality of control keys, which are electrically connected with the control assembly, and the top outer side of the control rod is provided with a second sleeve. A limiting device is used to limit the sliding of the direction bar.

In a preferred embodiment, a display screen is provided on a side of the top of the direction bar facing the folding vehicle body, and the display screen is electrically connected to the control assembly.

In a preferred embodiment, the ends of the two handle bars away from the connection with the direction bar are provided with extensions that extend vertically upwards, one of the extensions is slidably provided with a second sleeve, and the other extension is There is an assist dial key on the part, and the assist dial key is electrically connected with the control assembly.

In a preferred embodiment, handles are provided on the two handles, one of the handles is rotatably connected with the handle and electrically connected with the control assembly, and the handle is connected with the handle The grip bar rotates as the center of rotation and is used to control the speed of the folding vehicle body.

In a preferred embodiment, the bottom of the control rod is rotatably connected to a turning rod, the swing arm is fixedly connected to the bottom of the turning rod, the connecting assembly is sleeved outside the turning rod, and the control A sliding sleeve is also slidably provided outside the rod.

In a preferred embodiment, the control assembly includes: a controller and at least one power supply electrically connected to the controller, and the driving assembly and the steering assembly are respectively electrically connected to the controller.

The beneficial effects of the utility model are: by rotating and connecting the telescopic sleeve rod at the front end of the folding car body, the stretching of the telescopic sleeve rod drives the steering assembly and the driving assembly to move forward to realize the manned function, and retract the telescopic sleeve when not in use The pole can reduce the occupied space, and can be freely driven and towed according to the needs of use. It is easy to operate and easy to use. It realizes a brand-new folding electric trailer with various forms and functions, high novelty, and great attraction. Improve product competitiveness.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the folding car body of the present invention;

Fig. 3 is the structural schematic diagram of telescopic rod of the present utility model;

Fig. 4 is the enlarged schematic diagram of place A in Fig. 3 of the present utility model;

Fig. 5 is a structural schematic diagram of the drive assembly of the present invention;

Fig. 6 is a structural schematic diagram of the connection assembly of the present invention;

Fig. 7 is a structural schematic diagram of the connection limiting device of the present invention;

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

Fig. 9 is a schematic diagram of another state of the steering assembly of the present invention;

Fig. 10 is a schematic diagram of the folding state of the steering assembly and the driving assembly of the utility model;

Fig. 11 is a schematic diagram of the towing state of the utility model;

Figure 12 is a schematic diagram of the overall folded state of the utility model;

Fig. 13 is a functional block diagram of the electrical connection of the utility model;

Fig. 14 is a functional block diagram of the control box of the present invention.

In the picture:

10. Folding car body; 11. Follower wheel; 12. Telescopic sleeve rod; 121. Outer rod; 122. Inner rod; 123. Telescopic limit device; 124. Connecting seat; 125. Extension block; 13. First fixing member ; 14, the second fixing piece; 141, the fixing groove; 15, the sleeve rod limit device; 16, the insert block;

20. Control component; 21. Controller; 22. Power supply;

30. Drive assembly; 31. Drive wheel; 32. Wheel fork bracket; 33. Wheel fork shaft; 34. Transmission arm;

40, transmission part; 41, first transmission rod; 42, second transmission rod; 43, third transmission rod; 44, connecting screw;

50. Steering component; 51. Control rod; 52. Swing arm; 521. Chute; 53. Direction rod; 531. Grip rod; 532. First sleeve; 533. Control button; 534. First limit device ; 535, display screen; 536, extension; 537, second sleeve; 538, power-assisted dialing key; 539, grip; 54, connection assembly; Two connecting rods; 544, jack; 55, pin hole; 56, turning rod; 57, sliding sleeve; 58, cavity; 59, connecting ear;

60. Connection limit device; 61. Press rod; 62. Extrusion block; 63. Press handle; 64. Limit pin; 65. Return spring;

70, limit-rotation device; 71, limit-rotation pin block; 72, unlock contact lever; 73, guide post; 74, limit-rotation return spring; 75, avoidance hole.

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below limit.

In the description of the embodiments of the present utility model, it should be noted that, unless otherwise specified and limited, the terms, "connection" and "installation" should be understood in a broad sense, for example, "connection" can be detachably connected, It can also be non-detachably connected; it can be directly connected or indirectly connected through an intermediary. In addition, "connected" can be directly connected or indirectly connected through an intermediary. Wherein, "fixed" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present utility model, for example, "inner", "outer", "top", "bottom", etc., are only referring to the directions of the accompanying drawings, therefore, the orientation terms used are for better , to more clearly illustrate and understand the embodiments of the present utility model, rather than indicating or implying that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and therefore cannot be construed as limiting the embodiments of the present utility model .

In the embodiments of the present utility model, the terms "first" and "second" are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

In the embodiment of the present utility model, "and/or" is just an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which can mean: A exists alone, and A exists at the same time and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

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

As shown in Figures 1-14, the utility model provides a foldable electric trailer with telescopic movable wheels, which is characterized in that it comprises: a foldable vehicle body 10 and a control assembly 20; There is a follower wheel 11, and at least one telescopic sleeve rod 12 is connected to the front end of the folding body 10, and the extended end of the telescopic sleeve rod 12 is connected to a steering assembly 50, and a driving assembly 50 is connected below the steering assembly 50. assembly 30, the steering assembly 50 is in transmission connection with the driving assembly 30, the steering assembly 50 controls the steering of the driving assembly 30, and the steering assembly 50 and the driving assembly 30 are both located in the folding car The front end of the body 10, the front end of the telescopic sleeve rod 12 is provided with a telescopic limiter 123, which is used to limit the expansion and contraction of the telescopic sleeve rod 12, and when the telescopic sleeve rod 12 is stretched out, it synchronously drives the steering assembly 50 and the driving assembly 30 to move away from the folding body 10, the control assembly 20 is arranged on the folding body 10, the driving assembly 30 and the steering assembly 50 are respectively connected with the control The assembly 20 is electrically connected;

Concretely, as shown in Figure 1, the foldable car body 10 is a foldable trailer on the market, and a follower wheel 11 is provided at the rear end of the foldable car body 10, and the follower wheel 11 is a fixed wheel, which cannot rotate horizontally. The front end of the car body 10 is rotatably connected with a telescopic sleeve rod 12, and the extended end of the telescopic sleeve rod 12 is connected with a steering assembly 50. direction movement, the driving assembly 30 is connected below the steering assembly 50, the driving assembly 30 is used to drive the folding car body 10 forward or backward, the steering assembly 50 is used to control the orientation of the driving assembly 30, so as to realize direction control, and the driving assembly 30 moves relative to the folding car body 10 with the translation of the control steering assembly 50. When it is necessary to carry people or drive, the telescopic sleeve rod 12 can be turned to make it in a flat state, and then the telescopic sleeve rod 12 is stretched out to drive the control. Translate toward the component 50 and the drive component 30 in a direction away from the folding body 10 until the limit position, and then fix the telescopic sleeve rod 12 through the telescopic limiter 123 so that it cannot be retracted by itself when subjected to an external force, so as to avoid affecting normal use. Now the user can stand on the telescopic sleeve rod 12 to realize the functions of carrying people and driving; wherein, in order to improve driving comfort, a seat plate can also be installed on the front end of the folding car body 10, and the user can sit on the seat when in use. When the driving function is not in use, the seat plate can be removed, the telescopic limiter 123 can be pulled up, and the protruding part of the telescopic sleeve rod 12 can be retracted to drive the steering assembly 50 Move back with the driving assembly 30, next to the front end of the folding car body 10, put down the telescopic limiter 123, fix the telescopic sleeve rod 12, and now can be towed; wherein the driving assembly 30 is controlled by the control assembly 20, The control component 20 will receive the control instruction sent by the control component 50 to control the operation of the driving component 30 .

Further, in this embodiment, two telescopic sleeve rods 12 are provided, which are respectively located at the front end of the folding vehicle body 10, and each of the telescopic sleeve rods 12 includes: an outer rod 121 and an inner rod 122; The inner rod 122 is slidably arranged in the outer rod 121, and one end of the inner rod 122 is rotationally connected with the steering assembly 50, and the front end of the outer rod 121 is fixedly connected with a connecting seat 124, and the connection The seat 124 is rotatably connected to the front end of the folding car body 10, and the outer rod 121 is rotatably connected to the folding car body 10 and the steering assembly 50 through the connecting seat 124;

Specifically, as shown in Fig. 1 and Fig. 3, there are two telescopic sleeve rods 12, and the two telescopic sleeve rods 12 are respectively located at the bottom of both sides of the front end of the folding car body 10, and one end of the telescopic sleeve rod 12 is located at the bottom of the folding car body. At the corner of the front end of 10, the other end is located at the middle part of the folding car body 10, and each telescopic sleeve rod 12 all comprises: outer rod 121, inner rod 122; An "L"-shaped connection seat 124 is connected, and the connection seat 124 is connected to the front corner of the folding car body 10 through a rotating shaft, so that the whole telescopic sleeve rod 12 can be rotated with the front end of the telescopic sleeve rod 12 as the rotation center. so that the folding car body 10 is not limited by the length of the telescopic sleeve rod 12 when it is folded, and the connecting seat 124 can also play the role of supporting the front end of the telescopic sleeve rod 12. When the inner rod 122 is stretched relative to the outer rod 121 When going out to the limit position, the tail end of the inner rod 122 is located in the front end of the outer rod 121, that is, within the support range of the connecting seat 124, so that the connecting seat 124 also plays a role in supporting the inner rod 122, improving the supporting force, and ensuring that the telescopic sleeve rod 12 The stability of manned use; wherein in order to avoid affecting the rotation of the telescopic sleeve rod 12, the front end of the inner rod 122 is rotationally connected with the steering assembly 50, and when the outer rod 121 rotates relative to the folding car body 10, the inner rod 122 is driven to control the relative Rotating toward the assembly 50 allows the outer rod 121 to rotate smoothly without driving the steering assembly 50 to rotate synchronously.

Further, the bottoms on both sides of the folding car body 10 are fixedly provided with a first fixing piece 13 for fixing the telescopic sleeve rod 12, and the position of the first fixing piece 13 is in the same position as that of the telescopic sleeve rod 12. Corresponding in length, the tops of both sides of the folding car body 10 are rotated to be provided with a second fixing member 14 for fixing the telescopic sleeve rod 12, and the position of the second fixing member 14 is the same as that of the telescopic sleeve rod 12. Corresponds to the length after the predetermined angle is rotated relative to the folding vehicle body 10;

Specifically, as shown in Figure 2, to improve the stability of the use of the telescopic sleeve rod 12, a first fixing member 13 is respectively fixed in the middle of the bottom of both sides of the folding car body 10, and the position of the first fixing member 13 is in line with the telescopic The length of cover bar 12 is corresponding when laying flat, and the tail end of first fixing part 13 and telescopic cover bar 12 can cooperate together, fixed telescopic cover bar 12, avoids its rotation; Rotate the connected second fixing part 14 respectively. The position of the second fixing part 14 also corresponds to the length of the telescopic sleeve rod 12. It should be noted that the position of the second fixing part 14 needs to be folded relative to the telescopic sleeve rod 12. The length of the car body 10 after rotating a predetermined angle corresponds to that the second fixing member 14 is used to fix the telescopic sleeve rod 12 in the folded state. When the second fixing member 14 is in this position, the telescopic sleeve rod 12 is relatively folded to the car body 10 After rotating a predetermined angle, it will cooperate with the second fixing member 14 to achieve fixing.

It should be noted that the specific position setting of the second fixing member 14 can be referred to as shown in FIG.

Further, both the first fixing part 13 and the second fixing part 14 are provided with a fixing groove 141, and the end of the outer rod 121 away from the steering assembly 50 is provided with an extension block 125, and the extension block 125 Compatible with the fixing groove 141, the extension block 125 is also provided with a sleeve rod limiting device 15 for restricting the rotation of the telescopic sleeve rod 12;

Specifically, both the first fixing member 13 and the second fixing member 14 are provided with a fixing groove 141, and an extension block 125 is provided at the tail end of the outer rod 121. When the outer rod 121 is placed flat, the extension block 125 will be located at the second In the fixing groove 141 of a fixing part 13, the rotation of the outer rod 121 is limited by the fixing groove 141, and at the same time, the tail end of the outer rod 121 can be supported; when the outer rod 121 is tilted, the extension block 125 will be located on the second fixing In the fixing groove 141 of 14, the movement of the outer rod 121 is restricted by the fixing groove 141. In order to realize the fixed connection between the outer rod 121 and the first fixing part 13 and the second fixing part 14, a sleeve rod limiter is also provided on the extension block 125. Positioning device 15, the sleeve rod limiting device 15 is preferably a bayonet pin with a spring inside and a pull ring at the end. This bayonet pin is easy to install, simple to use, and low in cost; when the extension block 125 is located in the fixing groove 141, The rotation of the outer rod 121 can be further restricted by the sleeve rod limiting device 15 being fixedly connected with the first fixing member 13 or the second fixing member 14, wherein the rotation setting of the second fixing member 14 is for better compatibility with The extension blocks 125 fit together.

Further, in this embodiment, the driving assembly 30 includes: a driving wheel 31; two driving wheels 31 are provided, and a transmission member 40 is connected between the two driving wheels 31, and the steering assembly 50 is rotationally connected with the transmission part 40, and is used to drive the two driving wheels 31 to rotate synchronously. The first transmission rod 41 is rotatably connected to the second transmission rod 42, and one end of the two second transmission rods 42 away from the first transmission rod 41 is rotatably connected to a third transmission rod 43, and the third transmission rod 43 One end away from the second transmission rod 42 is rotationally connected with the corresponding driving wheel 31;

Specifically, as shown in Figure 5, the driving assembly 30 includes two driving wheels 31 and a transmission member 40 arranged between the two driving wheels 31, the outer side of the driving wheels 31 is provided with a wheel fork bracket 32, and the wheel fork bracket 32 The top is provided with a wheel fork shaft 33, and the wheel fork shaft 33 is rotatably connected with the steering assembly 50. The driving wheel 31 rotates horizontally through the wheel fork shaft 33 relative to the steering assembly 50. There is a transmission arm 34 extending horizontally; the transmission member 40 includes: a first transmission rod 41, a second transmission rod 42, and a third transmission rod 43; the second transmission rod 42 and the third transmission rod 43 are respectively provided with two, the first The two ends of the transmission rod 41 are respectively connected with the second transmission rod 42 through the mode of the rotating shaft, and the ends of the two second transmission rods 42 away from the first transmission rod 41 are respectively connected with the third transmission rod 43 through the mode of the rotating shaft. The ends of the two third transmission rods 43 away from the second transmission rod 42 are respectively rotatably connected to the corresponding transmission arms 34, wherein the first transmission rod 41, the second transmission rod 42 and the third transmission rod 43 can rotate vertically , the first transmission rod 41 is rotationally connected with the steering assembly 50; 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 will drive the first transmission rod 41 moves left and right, driving the second transmission rod 42 and the third transmission rod 43 to move left and right, and the third transmission rod 43 will push the transmission arm 34 to swing left or right, thereby driving the wheel fork bracket 32 to rotate around the wheel fork shaft 33, and then Drive the two driving wheels 31 to rotate left and right; when the first transmission rod 41 receives an upward force, it can drive the second transmission rod 42 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 as a drive wheel 31 according to demand.

It should be pointed out that since the second transmission rod 42 needs to rotate relative to the first transmission rod 41 and the third transmission rod 43, the two ends of the second transmission rod 42 will be arc-shaped so that the second transmission rod 42 can rotate, But in order to avoid the situation of sinking between the second transmission rod 42 and the first transmission rod 41 and the third transmission rod 43, one end that the second transmission rod 42 is connected with the first transmission rod 41 and the third transmission rod 43 is respectively provided with There are rounded corners, wherein the rounded corners are only provided on the upper side or the lower side on each end of the second transmission rod 42, and the position of the rounded corners corresponds to the direction of rotation based on the horizontal, such as the second transmission rod 42. When the rod 42 rotates upward relative to the third transmission rod 43 in a horizontal state, the rounded corners are located on the upper side, and the lower side is a corner, thereby avoiding the situation of sinking through the restriction of the corners, wherein because the second transmission rod 42 is relatively The steering between the first transmission rod 41 and the third transmission rod 43 is different, so the positions of the rounded corners at both ends of the second transmission rod 42 are opposite. If the second transmission rod 42 rotates downward relative to the first transmission rod 41, then the The rounded corner of the end is located at the lower side, and the second transmission rod 42 rotates upward relative to the third transmission rod 43 , so the rounded corner of the end is located at the upper side.

Further, in this embodiment, the steering assembly 50 includes: a control rod 51, the bottom of the control rod 51 is sheathed with a connection assembly 54, and the connection assembly 54 is used to connect with the telescopic sleeve rod 12 And support the control rod 51, the control rod 51 can rotate relative to the connection assembly 54, the drive assembly 30 is located below the connection assembly 54 and is rotatably connected with the bottom surface of the connection assembly 54, the control The bottom end surface of the rod 51 is also connected with a swing arm 52, and the swing arm 52 is rotationally connected with the drive assembly 30, and the control rod 51 drives the drive assembly 30 to rotate through the swing arm 52, and the control rod 51 A direction rod 53 is also movable inside;

Specifically, a connection assembly 54 is provided on the outside of the bottom of the control rod 51, and the two ends of the connection assembly 54 are respectively connected to the inner rod 122 of the telescopic sleeve rod 12 in rotation, and the angle between the connection assembly 54 and the telescopic sleeve rod 12 is 90°. , the control rod 51 is vertically positioned in front of the folding car body 10 through the support of the connection assembly 54, and the control rod 51 can rotate in the horizontal direction relative to the connection assembly 54 to drive the swing arm 52 at the bottom of the control rod 51 to swing horizontally. The end of the arm 52 is provided with a chute 521, and the bottom surface of the first transmission rod 41 is provided with a connecting screw 44. The swing arm 52 is rotatably connected with the connecting screw 44 of the first transmission rod 41 through the chute 521. Sliding in the chute 521, so that the swing arm 52 can drive the first transmission rod 41 to translate in the corresponding direction when swinging horizontally, and the first transmission rod 41 drives the two driving wheels 31 to rotate in the corresponding direction, so as to realize the translation of the direction. For control, a direction rod 53 is also telescopically provided 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: a foldable member 541, the foldable member 541 is arranged on the outside of the control rod 51, the two ends of the foldable member 541 are respectively connected to the first connecting rod 542 in rotation, and the two ends One end of each of the first connecting rods 542 away from the folding member 541 is respectively rotatably connected to a second connecting rod 543, the driving assembly 30 is rotatably connected to the second connecting rod 543, and the second connecting rod The side wall of 543 is rotatably connected with the telescopic sleeve rod 12, and the folding member 541 is also provided with a connection limiting device 60 for restricting the rotation of the first connecting rod 542;

Specifically, the foldable part 541 is sleeved outside the bottom of the control rod 51, and the foldable part 541 and the control rod 51 can be connected together through bearings, which can prevent the control rod 51 from rotating relative to the foldable part 541 while preventing the control rod 51 from rotating. The control rod 51 moves vertically relative to the folding part 541, the bottom of the control rod 51 passes through the folding part 541, and the first connecting rod 542 is connected to the two ends of the folding part 541 through the rotating shaft respectively. One end of the rod 542 far away from the foldable member 541 is connected to the second connecting rod 543 through a rotating shaft, and the end of the second connecting rod 543 far away from the first connecting rod 542 is connected to the inner rod 122 through a rotating shaft. At the same time, the two driving wheels 31 are respectively The fork shaft 33 is rotationally connected to the two second connecting rods 543. When the control rod 51 receives an upward force, it will drive the folding member 541 to move upwards. to rotate, and the second connecting rod 543 is horizontally connected to the inner rod 122 at 90°, and is restricted by the drive wheel 31 at the same time, so the second connecting rod 543 cannot rotate relative to the first connecting rod 542; When the control rod 51 rises, the swing arm 52 will drive the first transmission rod 41 to rise, so that the second transmission rod 42 will rotate vertically relative to the first transmission rod 41, and the vertical rotation of the second transmission rod 42 and the first connecting rod 542 will be Drive the two telescopic sleeve rods 12 to move closer to each other, and at this time the folding car body 10 will also be folded in. Finally, when the two telescopic sleeve rods 12 are turned to be inclined relative to the folding car body 10, the folding car body 10 can be folded from front, rear, left, and right. After the folding is completed, because the folding part 541 is freely rotatably connected with the first connecting rod 542, in order to prevent the folding part 541 from jumping due to the drive of the control rod 51 during use, which affects normal use, the folding part The middle part of 541 is provided with connection limit device 60, and this connection limit device 60 is used for restricting the rotation of first connection rod 542 relative to folding member 541, thereby guarantees that the first connection rod 542 can be prevented from rotating when needed, and guarantees safety and security in use. Use experience.

It should be noted that since the first connecting rod 542 is rotatably connected to the folding member 541 and the second connecting rod 543, in order to avoid sinking of the first connecting rod 542 under normal use, the folding part 541 and the second connecting rod 543 are all connected in rotation. The two ends of the folding part 541 are respectively provided with rounded corners, the rounded corners are only provided on the upper side or the lower side on each end of the folding part 541, and the position is related to the rotation direction of the first connecting rod 542, as The first connecting rod 542 rotates downward relative to the folding member 541 in a horizontal state, and the rounded corner of this end is located at the lower side; the first connecting rod 542 rotates upward relative to the second connecting rod 543 in a horizontal state, then the first connecting rod 542 rotates upward relative to the second connecting rod 543 The end rounding is on the upper side. Among them, the rounded corners can be set on both ends of the first connecting rod 542 or one on the folding member 541 and the second connecting rod 543 respectively. In this application, in order to avoid affecting the structure of the first connecting rod 542, choose A rounded corner is respectively provided on the folding part 541 and the end of the second connecting rod 543 connected to the first connecting rod 542 .

Further, the connection limiting device 60 includes: a pressing rod 61, a pressing block 62 is arranged in the middle of the pressing rod 61, and the pressing rod 61 is slidably arranged in the middle of the folding member 541, and the pressing The top of the rod 61 is detachably connected with a pressing handle 63; the two ends of the folding member 541 are respectively slidingly provided with limit pins 64, and the pressing rod 61 is located between the two limit pins 64. The opposite ends of the limit pins 64 are sloped, and the two limit pins 64 are respectively provided with return springs 65, and the limit pins 64 move toward the direction of the pressing rod 61 through the return springs 65. One end of the first connecting rod 542 connected to the folding member 541 is provided with a pin hole 55 corresponding to and adapted to the limit pin 64;

Specifically, the connection limiting device 60 is arranged on the side of the control rod 51 away from the folding vehicle body 10, and an accommodation cavity (not shown in the figure) is opened in the middle of the folding member 541, and a sliding device is installed in the accommodation cavity. There is a pressing rod 61, and the top of the pressing rod 61 is located outside the foldable part 541. The top of the pressing rod 61 is connected with a pressing handle 63 by a fastener such as a screw, which is convenient for the user to press from the outside. There is an integrally formed extruding block 62. The extruding block 62 moves up and down in the accommodating cavity with the vertical movement of the pressing rod 61. Limit pins 64 are respectively slid in the two ends of the folding member 541. The pressing rod 61 is located at Between the two limit pins 64, and the opposite sides of the two limit pins 64 are respectively upwardly inclined slopes. When the extruding block 62 moves downward, the two ends of the extruding block 62 will form a shape with the limit pin 64. One end of the slope contacts and squeezes the limit pin 64, and the limit pin 64 is pushed out toward the foldable part 541 through the slope of the slope; at the same time, two first connecting rods 542 and the foldable part 541 are respectively opened in the middle of one end that is rotationally connected to the foldable part 541. There is a pin hole 55 adapted to the limit pin 64. When the two limit pins 64 are pushed out by the extruding block 62, they will be inserted into the pin hole 55, so that the retractable part 541 and the first A connecting rod 542 is fixed together to prevent the first connecting rod 542 from rotating and arching relative to the foldable part 541 when not in use. Because the first connecting rod 542 and the foldable part 541 are rotationally connected by means of a rotating shaft, in order to avoid the rotation of the rotating shaft Motion interference is formed on the limit pin 64, and a slot hole is opened in the limit pin 64, and the rotating shaft is located in the slot hole, and can slide in the slot hole, so that the limit pin 64 can not be restricted by the rotating shaft in the folding part 541 Move between the first connecting rod 542; in order to improve the convenience of use of the connecting stop device 60, a return spring 65 is respectively installed in the two stop pins 64, and one end of the back spring 65 is connected with the stop pin 64, The other end is connected to the rotating shaft, so that the limit pin 64 will be pushed back into the folding part 541 under the force of the return spring 65 after losing the extrusion of the extrusion block 62, and break away from the plugged state with the first connecting rod 542 , at this time, the first connecting rod 542 can be rotated, which is convenient for the next connection.

It should be noted that when the extrusion block 62 moves down to the limit position, it does not break away from the contact with the limit pin 64, so as to prevent the limit pin 64 from being affected by the return spring 65 after losing the restriction of the extrusion block 62, so that both The distance between the two limit pins 64 is relatively short, and the extruding block 62 is located below the two limit pins 64, so that the pressing rod 61 cannot be pulled up. Preferably, the extruding block 62 descends to the limit position. , the ends of the two limit pins 64 will be on the top of the side wall of the extrusion block 62 to extend the contact distance between the limit pin 64 and the extrusion block 62 when rising, and reduce the vibration caused by vibration during normal use. The pressing rod 61 rises, and the limit pin 64 loses the restriction of the extruding block 62 and breaks away from the situation of the pin hole 55; at the same time, a rod cover is installed on the top of the accommodating chamber by fasteners such as screws, when the pressing rod 61 is put into the accommodating chamber Finally, the rod cover prevents the pressing rod 61 from leaving the accommodating cavity, and because the folding part 541 is integrally formed, in order to facilitate the placement of the rotating shaft without being restricted by the spring, mounting grooves are respectively provided on the tops of both ends of the folding part 541 A hole (not shown in the figure) is used to press the spring by an external tool to disengage it from the installation position of the rotating shaft. Wherein, the bottom of the pressing rod 61 can pass through or not pass through the bottom of the folding part 541. When passing through, the swing arm 52 and the folding part 541 need to be set at intervals to avoid folding when the pressing rod 61 passes through. The swing of the swing arm 52 will be restricted behind the member 541 .

Further, in this embodiment, each of the second connecting rods 543 is movably provided with a rotation limiting device 70, and the rotation limiting device 70 includes: a rotation limiting pin block 71, an unlocking contact rod 72, a rotation limiting return spring 74. The head end of the rotation limiting pin block 71 passes through the side wall connecting the second connecting rod 543 and the telescopic sleeve rod 12, and the tail end of the rotation limiting pin block 71 is provided with a guide post 73, so The rotation-limiting return spring 74 is arranged on the outside of the guide post 73, the unlocking contact lever 72 is in an "L" shape, one end of the unlocking contact lever 72 is fixedly connected to the rotation-limiting pin block 71, and the unlocking contact lever 72 is fixedly connected to the rotation-limiting pin block 71. The other end of the contact rod 72 protrudes from the second connecting rod 543, and the first end of the rotation limiting pin block 71 is also provided with an escape hole 75, and the second connecting rod 543 and the telescopic sleeve rod 12 are both in the When it is horizontal, the rotation-limiting pin block 71 protrudes into the telescopic sleeve rod 12 under the push force of the rotation-limiting return spring 74, and limits the contact between the telescopic sleeve rod 12 and the telescopic sleeve rod 12 by cooperating with the telescopic sleeve rod 12. The rotation of the second connecting rod 543;

Specifically, the second connecting rod 543 is provided with a mold cavity 58 for the sliding of the limiting device at one end of the second connecting rod 543 facing the folding vehicle body 10, and a connecting ear 59 for rotating connection with the inner rod 122 is detachably provided on the mold cavity 58. Ear 59 is also used to prevent rotation limiting device 70 from falling out of cavity 58; The connecting ear 59 is exposed to the outside, and the middle part of one end of the inner rod 122 which is rotationally connected with the connecting ear 59 is provided with a slot matched with the rotation limiting pin block 71. When the rotation limiting pin block 71 passes through the connecting ear 59, it extends into the slot hole. The fixing of the second connecting rod 543 and the inner rod 122 is realized through the cooperation of the rotation limiting pin block 71 and the slot hole. A guide column 73 is provided at the tail end of the rotation limiting pin block 71, and a guide column 73 is provided in the cavity 58. A suitable guide hole (not shown in the figure) is used to limit the displacement direction of the rotation limiting pin block 71. A limiting return spring 65 is provided on the outside of the guide post 73. The connecting ear 59 will pass through under the action force, and the end of the guide column 73 on the rotation limiting pin block 71 is also provided with an "L"-shaped unlocking contact rod 72, which is fixedly connected with the rotation limiting pin block 71 Or integrally formed, the other end of the unlocking contact rod 72 passes through the second connecting rod 543 and is exposed outside. When the inner rod 122 stretches out relative to the outer rod 121, because the unlocking contact rod 72 is not extruded by the outside world, the rotation limiting pin block 71 will be pushed into the slot to form a fit under the action force of the limited-rotation reset spring 74. In this state, the second connecting rod 543 cannot rotate relative to the inner rod 122 to ensure normal use. When the inner rod 122 is relative to the outer rod When 121 is retracted to the limit position, the second connecting rod 543 is in contact with the outer rod 121. At this time, the unlocking contact rod 72 is squeezed into the second connecting rod 543 by the hindrance of the outer rod 121, and at the same time drives the rotation limiting pin block 71 to retract. Connect the inside of the ear 59, and squeeze the rotation-limiting return spring 74. At this time, because the rotation-limiting pin block 71 has broken away from the cooperation with the slot hole, the outer rod 121 can drive the inner rod 122 to rotate vertically relative to the second combo rod; Wherein because the connecting ear 59 and the inner rod 122 are rotatably connected by means of a rotating shaft, in order to avoid the movement interference of the rotating shaft relative to the rotation-limiting pin block 71, an avoidance hole 75 is provided on the rotation-limiting pin block 71. In the hole 75, the length of the escape hole 75 is greater than the diameter of the rotating shaft, so that the rotating shaft can slide on the avoiding hole 75, thereby avoiding movement interference between the rotation limiting pin block 71 and the rotating shaft.

Further, insert blocks 16 are respectively provided at the bottom of both sides of the front end of the folding vehicle body 10 , and each of the second connecting rods 543 is provided with a socket 544 at a position opposite to the insert block 16 ;

Specifically, because the telescopic sleeve rod 12 is rotationally connected with the second connecting rod 543, in order to avoid that the entire steering assembly 50 and the driving assembly 30 are driven to rotate synchronously when the telescopic sleeve rod 12 rotates relative to the second connecting rod 543, the folding The bottom of the front end of the car body 10 is respectively provided with at least one plug-in block 16, and the plug-in block 16 can be one or two. In this embodiment, two plug-in blocks are preferably used to enhance the connection stability, and they are respectively located on both sides of the foldable car body 10. At the same time, sockets 544 are respectively opened at the corresponding places of each second connecting rod 543 and the inserting block 16, and the sockets 544 are adapted to the inserting block 16. When the inner rod 122 is completely retracted into the outer rod 121, the telescopic limit The device 123 restricts the movement of the inner rod 122 , and at the same time the insert block 16 is inserted into the socket 544 , and through the cooperation of the insert block 16 and the socket 544 , the rotation of the second connecting rod 543 relative to the inner rod 122 is restricted.

It should be pointed out that the telescopic limiter 123 adopts a bayonet pin with its own spring and pull ring inside, and because the telescopic limiter 123 is provided with one on each telescopic sleeve rod 12, and because the telescopic sleeve rod 12 is provided with At both ends of the folding car body 10, because the connecting assembly 54 cannot be tilted, and the two drive wheels 31 cannot appear in a tandem state, so when the limit needs to be released, two telescopic limit devices 123 are needed. At the same time, it is pulled up, and due to the existence of the above-mentioned situation, there will be inconvenience in use and even the situation that a single person cannot release the limit. For this reason, the telescopic limiter 123 needs to be improved. As shown in Figure 4, in the telescopic limit The top of the telescopic rod of the device 123 is provided with a protrusion extending outward, and at the same time, a groove matching the protrusion is provided on the top of the shell of the telescopic limiting device 123. When unlocking is required, the telescopic rod can be pulled out through the pull ring And rotate half a circle to dislocate the protrusion and the groove, and limit the movement of the telescopic rod through the setting of the protrusion. At this time, the inner rod 122 can be moved. Corresponding to the groove, the protrusion is snapped into the groove, and at this time the telescopic rod will extend into the inside of the outer rod 121 to achieve fixation, wherein the front and rear ends of the inner rod 122 are provided with telescopic stoppers 123 Corresponding limit holes, so as to realize the limit of the position of the inner rod 122 when it is extended and the position when it is retracted. At the same time, a plurality of limit holes can be arranged on the inner rod 122 at intervals, so that it can be adjusted according to the needs of users. The extension distance of the steering assembly 50 is adjusted to further improve the practicality.

Further, in this embodiment, the top of the direction rod 53 exposed outside the control rod 51 is T-shaped, and the two ends of the top of the direction rod 53 are respectively rotated and connected to the grip rod 531, and the two grips The outer side of one end of the rod 531 connected to the direction rod 53 is respectively slidably provided with a first sleeve 532, and the top surface of the direction rod 53 is provided with a plurality of control buttons 533, and the plurality of control buttons 533 are electrically connected to the control assembly 20. connected, the top outer side of the control rod 51 is provided with a first limiting device 534, which is used to limit the sliding of the direction rod 53;

Specifically, the direction rod 53 is slidably arranged in the control rod 51, and the direction rod 53 can stretch out the control rod 51 when needed to adjust the use height. The end of the direction rod 53 extending out of the control rod 51 is T-shaped. The two ends of the top of the top are respectively connected with grip bars 531 through rotating shafts, and the two grip bars 531 can rotate vertically relative to the direction bar 53 when in use, and make the two grip bars 531 horizontal, so that they can be turned in the opposite direction when not in use. The bar 53 rotates vertically so that the two grip bars 531 are vertical; in order to realize that the grip bars 531 can be fixed with the direction bar 53 when they are in a horizontal state, and prevent rotation, the outer side of the end that the direction bar 53 is connected with the grip bar 531 The first sleeve 532 is sleeved, and the first sleeve 532 is slid to the connected joint, so that the two ends of the first sleeve 532 surround the direction rod 53 and the grip rod 531 respectively, so that the direction rod 53 and the grip rod 531 are connected. Fixed, wherein in order to prevent the first sleeve 532 from sliding on its own during use, and detached from the connecting joint between the direction bar 53 and the grip bar 531, a spring is connected to the end of the first sleeve 532 facing away from the grip bar 531, through The active force of the spring makes it always be pushed towards the direction where the handle bar 531 is located, so that even if the first sleeve 532 slides due to unintentional contact, it can reset itself under the force of the spring; The top surface is also provided with some control buttons 533, and some control buttons 533 are electrically connected with the control assembly 20 through wires, and the wires can be drawn out from the inside of the control lever 51 to avoid the exposure of the wires; the control buttons 533 include but are not limited to forward/reverse keys, driving /drag switching key, car light switch key, horn key, turn signal control key, etc., the control principle can refer to the button control of existing electric bicycles; When the control rod 51 is stretched out, due to the gravity, it slides into the control rod 51 again on its own. A clamping hole matched with the first limiting device 534, through the cooperation of the first limiting device 534 and the clamping hole, the length that the fixed direction rod 53 protrudes relative to the control rod 51 is realized, wherein the first limiting device 534 and the first limiting device 534 are matched with the clamping hole. The structure of the locking latch is the same.

It should be pointed out that the control button 533 can also adopt the method of resistance button, which can reduce the wire core setting of the wire, and the resistance value of each button of the resistance button is different, and when the corresponding button is pressed, a corresponding resistance The value is transmitted to the control component 20 through wires, and the control component 20 receives the resistance signal, identifies the key function according to the resistance value and makes corresponding control.

Further, a display screen 535 is provided on the top of the direction rod 53 facing the foldable vehicle body 10 , and the display screen 535 is electrically connected to the control assembly 20 ;

Specifically, a display screen 535 is also provided on the top of the direction bar 53, and the display screen 535 is electrically connected with the control assembly 20, and is used to display the current driving speed, driving mode, power supply 22, etc., and the display screen 535 faces the folding The direction in which the vehicle body 10 is located.

Further, the ends of the two handle bars 531 away from the connection with the direction bar 53 are provided with extensions 536 extending vertically upwards, one of the extensions 536 is slidingly provided with a second sleeve 537, and the other extension is The part 536 is provided with an assist dial key 538, and the assist dial key 538 is electrically connected with the control assembly 20;

Specifically, in order to facilitate the use of the steering rod 53 in the trailer state, an extension 536 extending vertically upward is also provided at the end of the grip rod 531 away from the connection with the steering rod 53. When the two grip rods 531 rotate upward, the two The extensions 536 on the first grip bar 531 are opposite and in contact with each other, forming a rectangular ring shape with the grip bar 531 and the direction bar 53, so as to facilitate towing in the trailer state. A second sleeve 537 is movably provided on one of the extensions 536. When the two extensions 536 are opposite and in contact, the second sleeve 537 can be slid to the contact of the two extensions 536, and the second sleeve The restriction of the sleeve 537 prevents the two extensions 536 from being separated. When the two extensions 536 need to be separated, the second sleeve 537 can be pushed away directly; There is an assist dial key 538 on the top, which is electrically connected with the control assembly 20, and is used to achieve the effect of dragging assist through the assist dial key 538 when in the towing state, that is, by toggling the assist dial key 538 can make The driving wheel 31 runs at a constant speed, and then realizes the effect of dragging and assisting.

Wherein, in order to prevent the second sleeve 537 from sliding freely on the two extensions 536, the tail end of the second sleeve 537 is connected to one extension 536 where it is located by a spring. When the two extensions 536 are opposite and in contact, the second The second sleeve 537 is moved to the direction where the other extension 536 is by the force of the spring, so as to realize the fixation between the two extensions 536. At the same time, the setting of the spring can avoid unnecessary sliding, which will cause the two The two extensions 536 are out of the relative state.

It should be noted that both the first sleeve 532 and the second sleeve 537 are restrained on the direction rod 53 or the extension portion 536 through the cooperation of the protrusion ring on the inner wall, so that they cannot be completely disengaged.

Further, two handles 531 are provided with handles 539, one of the handles 539 is rotatably connected with the handle 531 and electrically connected with the control assembly 20, and the handle 539 is thus The grip bar 531 rotates as the center of rotation and is used to control the speed of the folding vehicle body 10;

Specifically, one of the two grips 539 can rotate relative to the handle bar 531, and the rotatable grip 539 is electrically connected to the control assembly 20 to control the speed of the electric wheel. The control principle is that the grip 539 is provided with The angle position sensor sends the rotation angle of the sleeve 539 to the control assembly 20 through the angle position sensor, and the control assembly 20 controls the corresponding voltage or current output according to the rotation angle, and adjusts the running speed of the driving wheel 31, thereby controlling the speed.

It should be pointed out that the other handle 539 can also be set as a rotating structure, and the rotation of the handle 539 can be connected to the electronic brake structure. Through the rotation of the handle 539, the rotation speed of the electric wheel is controlled, and the brake is performed to improve the braking effect and control The principle is consistent with the speed control principle of the handle 539, the difference is that the larger the rotation angle is when the handle 539 controls the speed, the faster the speed is, while the braking of the handle 539 is that the larger the rotation angle is, the greater the braking force is.

Further, the bottom of the control rod 51 is rotatably connected to a turning rod 56, the swing arm 52 is fixedly connected to the bottom of the turning rod 56, the sleeve is sleeved outside the turning rod 56, and the control rod Sliding sleeve 57 is also provided outside 51;

Specifically, in order that the control rod 51 can be inclined to be easy for the user to drag, the bottom of the control rod 51 is connected with a turning rod 56 through a rotating shaft, and the swing arm 52 is arranged on the bottom of the turning rod 56, and the control rod 51 can be opposite The turning lever 56 is rotated vertically, so that the control lever 51 is inclined, so that it is convenient for the user to tow, and the towing is more labor-saving and convenient; The lever 56 rotates horizontally with respect to the axle sleeve to control the direction. In order to ensure the stability of the control lever 51 in the riding state, a sliding sleeve 57 is also sleeved at the joint between the control lever 51 and the turning lever 56. When towing, the sliding sleeve 57 can be slid to the connection between the control rod 51 and the turning rod 56, and the rotation of the control rod 51 and the turning rod 56 is limited by the sliding sleeve 57 to ensure the use.

Further, in this embodiment, the control assembly 20 includes: a controller 21 and at least one power supply 22 electrically connected to the controller 21, the drive assembly 30 and the steering assembly 50 are respectively connected to the The controller 21 is electrically connected;

Specifically, the controller 21 is used to receive the control signal sent by the control button 533 and control the operation of the driving wheel 31 according to the control signal, and the power supply 22 is used to provide electric energy to the controller 21 and the driving wheel 31. The specific control principle is the prior art , so it will not be described here.

It should be pointed out that, in order to achieve braking, a foot brake is provided on one of the first connecting rods 542, and the foot brake is connected with the two driving wheels 31 and/or the two follower wheels 11 through the brake line, and is used to For controlling the driving speed, the driving wheel 31 or the follower wheel 11 all have brake structures such as drum brakes or disc brakes or electronic brakes. Such methods are prior art, so they will not be described in detail here.

Use state: as shown in Figure 1, it is the driving state. When it is necessary to fold in this state, first, pull the two telescopic limiters 123 to break away from the limit state, and then rotate the telescopic limiter 123 to make it Unable to lower the limit, then you can push the steering assembly 50 to move to the position where the folding car body 10 is located. At this time, the inner rod 122 is pushed and retracted into the outer rod 121. The movement of the rod 122, because the insert block 16 is also inserted in the jack 544 at this time, the rotation of the connecting assembly 54 is limited by the cooperation of the two, and the telescopic sleeve rod 12 can be rotated so that its tail end is positioned at the end of the second fixing member 14. In the fixing groove 141, and fix it, then the pressing handle 63 can be pushed upwards to drive the pressing rod 61 to rise. It retracts by itself and breaks away from the cooperation with the first connecting rod 542. At this time, pulling up the control rod 51 can drive the folding part 541 to rise, and the first connecting rod 542 will be vertical to the folding part 541 and the second connecting rod 543. Turn and fold, and the control rod 51 will also drive the transmission part 40 to rotate and fold through the swing arm 52 at the same time, as shown in Figure 10; at this time, the folding car body 10 can be folded until as shown in Figure 12, and the folding is completed; When it is necessary to unfold and enter the driving state, first unfold the folding car body 10, and the connecting assembly 54 and the transmission member 40 will be flattened downward under the drive of the two telescopic sleeve rods 12. At this time, the pressing handle 63 can be pressed to make the pressing rod 61 descends, the extruding block 62 pushes the two limit pins 64 to move, inserts them into the pin holes 55, forms a fit, and fixes the first connecting rod 542 and the folding member 541, and then pulls the sleeve rod limit devices 15 one by one to make the telescopic sleeve The rod 12 is converted from an inclined shape to a horizontal shape, and then the telescopic sleeve rod 12 is fixed by the sleeve rod stopper 15 to avoid its rotation, and then the two telescopic stoppers 123 can be pulled up and rotated. At this time, the inner rod 122 is lost. The retractable limiter 123 restricts, and because the unlocking contact rod 72 is in contact with the outer rod 121, after the inner rod 122 loses its limit, the inner rod 122 will pop out automatically under the influence of the unlocking contact rod 72 and the limited rotation return spring 74 A certain distance, now you can pull the steering assembly 50 forward, pull the inner rod 122 out from the outer rod 121, and when it reaches the limit position, turn the telescopic limiter 123 to make it enter the limit state, and limit the inner rod 122. The movement, so far completes the expansion.

When it is necessary to switch from the driving state to the towing state, there are two situations that can be determined according to the user's own needs. One is, in the driving state, slide the sliding sleeve 57 on the control lever 51 upward to make it break away from the turning lever 56 and the joint of the control rod 51, now the control rod 51 can be rotated relative to the turning rod 56, making it inclined, so as to facilitate towing; second, in the driving state, the inner rod 122 is retracted to the outer rod 121 Inside and fixed, now the steering assembly 50 and the drive assembly 30 are next to the front end of the folding car body 10, then slide the sliding sleeve 57, so that the control rod 51 is inclined relative to the turning rod 56, as shown in Figure 11 .

It should be noted that since the two inner rods 122 are parallel to each other when extending out of the outer rod 121, in order to improve the diversity and convenience of use, a support such as a pedal can also be placed between the two inner rods 122, which is convenient for users Stands directly on the pedals.

To sum up, the utility model rotates and connects the telescopic sleeve rod at the front end of the folding car body, and the extension of the telescopic sleeve rod drives the steering assembly and the drive assembly to move forward to realize the manned function, and retract the telescopic sleeve when not in use The pole can reduce the occupied space, and can be freely driven and towed according to the needs of use. It is easy to operate and easy to use. It realizes a brand-new folding electric trailer with various forms and functions, high novelty, and great attraction. Improve product competitiveness.

The utility model is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (16)

1. A foldable electric trailer with telescopic movable wheels, it is characterized in that it comprises: a foldable car body and a control assembly; a follower wheel is installed at the bottom of the rear end of the foldable car body, and at least A telescopic sleeve rod, the extended end of the telescopic sleeve rod is connected with a steering assembly, the lower part of the steering assembly is connected with a driving assembly, and the steering assembly is in transmission connection with the driving assembly, and the steering assembly Control the steering of the driving assembly, the steering assembly and the driving assembly are located at the front end of the folding car body, and the front end of the telescopic sleeve rod is provided with a telescopic limiter for limiting the movement of the telescopic sleeve rod telescoping, when the telescopic rod is stretched out, it synchronously drives the steering assembly and the driving assembly to translate in a direction away from the folding vehicle body, the control assembly is arranged on the folding vehicle body, and the driving assembly The steering component is electrically connected with the control component respectively. 2. The foldable electric trailer with telescopic movable wheels according to claim 1, characterized in that two telescopic sleeve rods are respectively located at the front end of the foldable car body, and each of the telescopic sleeve rods is It includes: an outer rod and an inner rod; the inner rod is slidably arranged in the outer rod, one end of the inner rod is rotationally connected with the steering assembly, and the front end of the outer rod is fixedly connected with a connecting seat. The connecting seat is rotatably connected to the front end of the folding vehicle body, and the outer rod is rotatably connected to the folding vehicle body and the steering assembly through the connecting seat. 3. The foldable electric trailer with telescopic movable wheels according to claim 2, characterized in that, the bottoms on both sides of the foldable vehicle body are fixedly provided with first fixing members for fixing the telescopic rods, the The position of the first fixing part corresponds to the length of the telescopic sleeve rod, and the top of both sides of the folding car body is rotated to be provided with a second fixing part for fixing the telescopic sleeve rod, and the second fixing part The position is corresponding to the length of the telescopic sleeve rod after rotating a predetermined angle relative to the folding vehicle body. 4. The folding electric trailer with telescopic movable wheels according to claim 3, characterized in that, both the first fixing piece and the second fixing piece are provided with fixing grooves, and the outer rod is far away from the steering wheel. An extension block is provided at one end of the assembly, and the extension block is adapted to the fixing groove, and a sleeve rod limiting device for restricting the rotation of the telescopic sleeve rod is also provided on the extension block. 5. The foldable electric trailer with telescopic movable wheels according to claim 2, wherein the drive assembly comprises: a drive wheel; two drive wheels are provided, and there is a connection between the two drive wheels The transmission part, the steering assembly is connected to the transmission part in rotation, and is used to drive the two driving wheels to rotate synchronously. The transmission part includes a first transmission rod and two ends of the first transmission rod, respectively A second transmission rod that is rotatably connected to the first transmission rod, and a third transmission rod is rotatably connected to the ends of the two second transmission rods away from the first transmission rod, and the third transmission rod is far away from the first transmission rod. One end of the two transmission rods is rotatably connected with the corresponding driving wheels. 6. The foldable electric trailer with telescopic movable wheels according to claim 2, wherein the steering assembly comprises: a control rod, the bottom of which is sleeved with a connection assembly, and the connection assembly is used for Connected with the telescopic sleeve rod and supporting the control rod, the control rod can rotate relative to the connection assembly, the drive assembly is located below the connection assembly and is rotatably connected to the bottom surface of the connection assembly, the The bottom end surface of the control rod is also connected with a swing arm, the swing arm is rotatably connected with the drive assembly, the control rod drives the drive assembly to rotate through the swing arm, and a direction rod is also movable in the control rod . 7. The foldable electric trailer with telescopic movable wheels according to claim 6, characterized in that, the connecting assembly comprises: a foldable part, the foldable part is arranged on the outer side of the control rod, and the foldable part The two ends of the part are respectively rotatably connected with first connecting rods, and the ends of the two first connecting rods away from the folding part are respectively rotatably connected with second connecting rods, and the drive assembly and the second connecting rods Rotationally connected, the side wall of the second connecting rod is rotatably connected to the telescopic sleeve rod, and a connection limiting device for restricting the rotation of the first connecting rod is also provided on the folding member. 8. The foldable electric trailer with telescopic movable wheels according to claim 7, characterized in that, the connection limiting device comprises: a pressing rod, a pressing block is arranged in the middle of the pressing rod, and the pressing rod slides It is arranged in the middle of the folding part, and the top of the pressing rod is detachably connected with a pressing handle; the two ends of the folding part are respectively slidingly provided with limit pins, and the pressing rod is located at the two limit pins. Between the pins, the opposite ends of the two limit pins are inclined, and the two limit pins are respectively provided with return springs, and the limit pins move toward the direction of the pressing rod through the return springs, A pin hole corresponding to and adapted to the limit pin is opened in one end of the two first connecting rods connected to the folding member. 9. The foldable electric trailer with telescopic movable wheels according to claim 7, wherein a rotation limiting device is movable inside each of the second connecting rods, and the rotation limiting device comprises: a rotation limiting pin block, Unlocking the touch rod, the limit rotation return spring, the first end of the limit rotation pin block passes through the side wall connecting the second connecting rod and the telescopic sleeve rod, and the tail end of the rotation limit pin block is provided with a guide column , the rotation-limiting return spring is arranged on the outside of the guide column, the unlocking feeler rod is in an "L" shape, one end of the unlocking feeler rod is fixedly connected to the rotation-limiting pin block, and the unlocking feeler rod The other end protrudes from the second connecting rod, and the first end of the rotation limiting pin block is also provided with an escape hole. When the second connecting rod and the telescopic sleeve rod are all at the level, the rotation limiting pin block Under the push force of the rotation-limiting return spring, it extends into the telescopic sleeve rod, and limits the rotation of the telescopic sleeve rod and the second connecting rod through cooperation with the telescopic sleeve rod. 10. The foldable electric trailer with telescopic movable wheels according to claim 7, characterized in that insert blocks are respectively provided at the bottoms of the front and both sides of the foldable vehicle body, and each of the second connecting rods is connected with the inserts. The opposite positions of the blocks are provided with jacks. 11. The foldable electric trailer with telescopic movable wheels according to claim 6, characterized in that, the top of the direction rod exposed outside the control rod is T-shaped, and the two ends of the top of the direction rod are respectively connected by rotation There is a grip bar, and the outer sides of the ends connected to the two grip bars and the direction rod are respectively slidingly provided with first sleeves, and the top surface of the direction rod is provided with a number of control buttons, and the plurality of control buttons are connected with the control buttons. The components are electrically connected, and a first limiting device is provided on the outside of the top of the control rod, which is used to limit the sliding of the direction rod. 12. The foldable electric trailer with telescopic movable wheels according to claim 11, wherein a display screen is provided on the top of the direction bar facing the folding car body, and the display screen is connected with the control The components are electrically connected. 13. The foldable electric trailer with telescopic movable wheels according to claim 11, characterized in that, the ends of the two handle bars away from the connection with the direction bar are provided with extensions extending vertically upwards, one of the extensions The upper slide is provided with a second sleeve, and the other extension is provided with an assist dial key, and the assist dial key is electrically connected with the control assembly. 14. The foldable electric trailer with telescopic movable wheels according to claim 13, characterized in that, handles are provided on the two handles, one of the handles is rotatably connected with the handle and The control assembly is electrically connected, and the handle rotates with the handle as the center of rotation for controlling the speed of the folding vehicle body. 15. The foldable electric trailer with telescopic movable wheels according to claim 6, characterized in that, the bottom of the control rod is rotatably connected to a turning rod, the swing arm is fixedly connected to the bottom of the turning rod, and the The connection assembly is sheathed on the outside of the turning rod, and a sliding sleeve is slidably provided on the outside of the control rod. 16. The foldable electric trailer with telescopic movable wheels according to claim 1, wherein the control assembly comprises: a controller and at least one power supply electrically connected to the controller, the drive assembly and the The steering components are electrically connected with the controllers respectively.