CN210175066U - Bicycle connector - Google Patents

Abstract

The utility model discloses a bicycle connector, which comprises a front bracket, a middle rotating shaft and a rear bracket; the front support comprises an upper U-shaped fork, a lower U-shaped fork and a connecting pipe for connecting the upper U-shaped fork and the lower U-shaped fork, the front ends of the two branches of the upper U-shaped fork and the lower U-shaped fork are respectively and correspondingly connected, and the front ends of the two branches of the upper U-shaped fork are used for connecting two ends of a rear wheel shaft of the driving bicycle; the middle rotating shaft comprises a middle shaft and a steering plate which is sleeved on the middle shaft and can rotate around the middle shaft, the upper end and the lower end of the middle rotating shaft are respectively connected with the arc-shaped rear ends of the upper U-shaped fork and the lower U-shaped fork, and a convex ring with a central shaft vertical to the middle shaft is arranged on the steering plate; the front end of the rear bracket is inserted in the convex ring, and the rear bracket can rotate around the middle rotating shaft in the left and right directions of the driving bicycle. The utility model connects the driving bicycle with the driven bicycle or the driven object placing frame from front to back, so that the driving bicycle and the driven bicycle run synchronously from front to back; when the driving bicycle turns, the driven bicycle or the driven object placing frame can turn along with the driving bicycle, and meanwhile, the driving bicycle is convenient to pull and carry objects.

Description

Bicycle connector

Technical Field

The utility model relates to a bicycle connector mainly is applicable to the connection between two bicycles or the bicycle and puts the connection between the thing car, makes back synchronous traveling before.

Background

Single cars have been a major tool for people's travel, exercise, and entertainment since their time of appearance. When people ride together, particularly when adults and children ride together, the children are easy to have safety accidents due to poor safety consciousness and unskilled riding technology, light people are knocked and bruised, and serious people have serious accidents. In order to enable children and adults to ride together, bicycles for front and back riding of multiple people appear on the market. However, the existing bicycle is mainly used for realizing multi-person riding by lengthening the bicycle body and further increasing the number of seats, and the bicycle is mostly used as a single entertainment tool in scenic spots or leisure places and is rarely purchased by families.

Moreover, when a family or a take-out courier uses a bicycle to pull and send goods, because the bearing space of the bicycle is limited, a storage trolley needs to be added behind the bicycle, but if the bicycle and the storage trolley are movably connected, accidents are easy to happen due to loose connection, and if fixed connection is adopted, flexible use of the bicycle is limited, the use is inconvenient, and when goods do not need to be pulled, the independent storage trolley is inconvenient to store.

Therefore, there is a need to develop a connection device capable of connecting two bicycles or a bicycle and a storage cart, so as to be suitable for being popularized and used in various occasions such as households and work.

Disclosure of Invention

To the technical problem who exists, the utility model provides a bicycle connector on the basis that does not change current ordinary bicycle structural style, can be connected around initiative bicycle and driven bicycle or the driven thing car of putting, reaches the manned thing of carrying, even tears convenient purpose open.

In order to achieve the purpose, the utility model provides a bicycle connector, which comprises a front bracket, a middle rotating shaft and a rear bracket; the front support comprises an upper U-shaped fork, a lower U-shaped fork and a connecting pipe for connecting the upper U-shaped fork and the lower U-shaped fork, the front ends of the two branches of the upper U-shaped fork and the lower U-shaped fork are respectively and correspondingly connected, and the front ends of the two branches of the upper U-shaped fork are used for connecting two ends of a rear wheel shaft of the driving bicycle; the middle rotating shaft comprises a middle shaft and a steering plate which is sleeved on the middle shaft and can rotate around the middle shaft, the upper end and the lower end of the middle rotating shaft are respectively connected with the arc-shaped rear ends of the upper U-shaped fork and the lower U-shaped fork, and a convex ring with a central shaft vertical to the middle shaft is arranged on the steering plate; the front end of the rear bracket is inserted in the convex ring, and the rear bracket can rotate around the middle rotating shaft in the left and right directions of the driving bicycle.

Among the above-mentioned technical scheme, two arbitrary bicycles or bicycles with put the thing car and can realize riding in step through this bicycle connector connection back front and back, and the driven bicycle at back or put the thing car and can follow the initiative bicycle in the front and march and turn, connect simply convenient to use.

Furthermore, the front ends of the two branches of the upper U-shaped fork are respectively connected with a left hanging lug and a right hanging lug which are used for connecting two ends of a rear wheel shaft of the driving bicycle.

Furthermore, the front ends of the two branches of the upper U-shaped fork are respectively connected with a left pressing plate and a right pressing plate, and the left pressing plate and the right pressing plate can press two ends of a rear wheel shaft of the driving bicycle and are fixed with a bicycle body of the driving bicycle through a binding band.

Further, the rear bracket include traction frame, driven supporter and wheel, the front end interlude of traction frame is in the convex circle of axis of revolution, driven supporter is connected to the rear end of traction frame, the wheel is installed on driven supporter.

Furthermore, the wheels are symmetrically arranged at the bottom of the driven commodity shelf.

Furthermore, the wheel is installed at the rear of the driven object placing rack.

Among the above-mentioned technical scheme, back bracket itself can place the goods for putting the thing car on its driven supporter. The structure of the object placing vehicle can be adjusted according to actual needs, and if the wheels are arranged at the bottom of the driven object placing rack, the object placing vehicle is similar to a flat car; when the wheels are arranged at the rear end of the driven storage rack, the storage trolley is similar to a monocycle in shape. Not only strengthened the connection of putting thing car and bicycle, can also adjust the combination form of bicycle and thing car in a flexible way, solved the problem of depositing of putting the thing dolly, still be convenient for deposit and pull the goods of carrying.

Furthermore, the rear bracket comprises an upper bracket, a middle bracket and a lower bracket, and is used for connecting the driven bicycle and enabling the front wheel of the driven bicycle to be lifted off the ground; the main body of the upper bracket is a U-shaped connecting frame, and the arc front end of the upper bracket is movably connected with the top end of the middle rotating shaft; the main body of the middle bracket is a U-shaped frame, the arc front end of the middle bracket is inserted in the convex ring and can rotate in the vertical direction of the driving bicycle by taking the middle bracket as a shaft, and the rear ends of the two branches of the middle bracket are correspondingly connected with the rear ends of the two branches of the U-shaped connecting frame through rotating shafts; the main body of the lower bracket is a U-shaped steel frame, the front ends of the two branches are correspondingly connected with the two branches of the U-shaped steel frame through locking mechanisms respectively, the arc-shaped rear end of the lower bracket is used for being connected with a driven bicycle frame, and the locking mechanisms are used for fixing two ends of a front wheel shaft of the driven bicycle.

Among the above-mentioned technical scheme, the after-poppet is used for connecting driven bicycle, and well, the bottom bracket passes through the front wheel axle of the fixed driven bicycle of locking mechanism, and the pivot front end can drive through well, bottom bracket anticlockwise rotation in the connection of upper bracket front end, hangs the front wheel of driven bicycle from ground, and U type frame can be rotatory from top to bottom at the initiative bicycle, and the arc rear end of U type steelframe is used for connecting driven bicycle frame for the after-poppet can drive driven bicycle and follow the turning of initiative bicycle. On the contrary, the front end of the upper bracket is taken down from the middle rotating shaft, and the front wheel of the driven bicycle can be driven to be placed on the ground. The rear support frame not only rotates along the middle rotating shaft at the left side and the right side of the driving bicycle, but also rotates along the middle bracket at the upper side and the lower side of the driving bicycle, and when the front end of the upper bracket leaves the middle rotating shaft, the middle bracket and the lower bracket can be driven to rotate and fold at the rear of the driving bicycle.

Furthermore, the locking mechanism comprises a left clamping groove and a right clamping groove which are arranged on the two branches of the U-shaped frame and can slide, and two triangular plate assemblies arranged on the two branches of the U-shaped steel frame; the triangular plate component comprises two triangular plates and a circular shaft connecting vertex angles of the two triangular plates; the front ends of the left and right clamping grooves are arranged between the front angles of the two corresponding triangular plates through rotating shafts, and the central saddles of the left and right clamping grooves are used for accommodating the front wheel shaft of the driven bicycle and fixing the front wheel shaft together with the round shaft which can slide into the corresponding central saddles.

Among the above-mentioned technical scheme, the left and right draw-in groove of fixed driven bicycle front axle can slide on U type frame to the driven bicycle front wheel diameter of adaptation difference, after suitable according to the position is adjusted to the front wheel diameter, the bolt on left and right draw-in groove just fixes it on U type frame. When two bicycles around the bicycle connector is connected, the two ends of the front wheel shaft of the driven bicycle are respectively inserted into the central saddles of the left and right clamping grooves, and the left and right clamping grooves and the two corresponding triangular plates rotate relatively along the rotating shaft, so that the circular shafts of the three plate assemblies can slide into the corresponding central saddles to plug the notches of the left and right clamping grooves, and the front wheel shaft of the driven bicycle is locked. When the bicycle connector is disconnected with the driven bicycle, the middle bracket is pulled upwards to rotate anticlockwise, meanwhile, the lower bracket rotates clockwise, the central saddle is separated from the round shaft by a certain distance, and then the front wheel shaft of the driven bicycle can be taken out of the locking mechanism.

Furthermore, the rear ends of the left and right clamping grooves and the rear corners of the triangular plates are respectively provided with through holes, and when the left and right clamping grooves and the rear corners of the triangular plates are overlapped, the rear ends of the left and right clamping grooves can be fixed between the rear corners of the two corresponding triangular plates through the pin shaft.

Among the above-mentioned technical scheme, when the bicycle connector relieved with driven bicycle be connected, take out driven bicycle front wheel axle both ends respectively from the center saddle at left and right draw-in groove, upwards stimulate the bottom bracket along pivot anticlockwise rotation for the through-hole coincidence on left and right draw-in groove rear end and the set square relief angle that corresponds utilizes the round pin to fix corresponding through-hole again, thereby well bracket and bottom bracket form a whole, are convenient for further folding accomodating.

Further, U shaped steel frame two branches on install fixed sleeve respectively, U shaped steel frame can slide along fixed sleeve is inside to through bolt fastening position, and fixed sleeve passes through the connecting plate and is connected with the set-square subassembly that corresponds.

Among the above-mentioned technical scheme, U type steelframe slides in order to adapt to the not driven bicycle frame of equidimension inside the fixed sleeve, after adjusting suitable position, is fixed U type steelframe and driven bicycle frame, utilizes the position of the bolt fastening U type steelframe on the fixed sleeve.

To sum up, the utility model discloses be connected initiative bicycle and driven bicycle or put thing plantago back, when initiative bicycle in the front was turned, driven bicycle or put the thing car at back and rotate around the pivot, follow initiative bicycle and turn. When the driving bicycle and the driven bicycle run forwards and backwards, the front wheels of the driven bicycle are lifted off; when the driving bicycle is not connected with the driven bicycle, the rear bracket can be folded and is hung behind the driving bicycle through the front bracket.

Compared with the prior art, the utility model has the technical advantages that:

1. the bicycle connector is suitable for connection among various bicycles or between the bicycle and the object placing vehicle, has wide application range and is beneficial to household configuration;

2. when two bicycles are connected for riding, the front wheel of the driven bicycle is lifted off, and can move along with the driving bicycle, so that the bicycle is suitable for parents to take children for riding;

3. when two bicycles are ridden independently, the bicycle connector can be folded and hung on the front driving bicycle, and the bicycle connector is simple to mount and dismount and convenient to carry.

4. When the driving bicycle and the driven object placing vehicle are connected in front and at the back, the object carrying space can be expanded, the connection firmness is enhanced, the driving bicycle and the driven object placing vehicle are convenient to disassemble and assemble, and the driving bicycle and the driven object placing vehicle are flexible to use.

Drawings

FIG. 1 is an overall view of the structure of the present invention;

FIG. 2 is a schematic structural view of a front bracket of the present invention in the form of a hanger;

FIG. 3 is a schematic view of a front support in the form of a platen according to the present invention;

FIG. 4 is a schematic view of the structure of the middle bracket of the rear bracket of the present invention used for connecting a driven bicycle;

FIG. 5 is a schematic view of the upper bracket of the rear bracket of the present invention for use in connection with a driven bicycle;

FIG. 6 is a schematic view of the rear bracket of the present invention for connecting to a driven bicycle;

FIG. 7 is a schematic structural view of a spindle according to the present invention;

FIG. 8 is a schematic structural view of the locking mechanism of the present invention;

FIG. 9 is a schematic view of the present invention in use connecting two bicycles;

FIG. 10 is a schematic view of the present invention showing the two bicycles folded after the two bicycles are disconnected;

FIG. 11 is a schematic view of a rear bracket of the present invention as a cart;

FIG. 12 is a schematic view of a rear bracket of the present invention as a cart;

in the figure: 1. front support, 2, middle support, 3, upper support, 4, lower support, 5, middle rotating shaft, 11, right lug, 12, left lug, 13, upper U-shaped fork, 14, lower U-shaped fork, 15, connecting pipe, 16, upper lifting lug, 17, lower lifting lug, 20, U-shaped frame, 21, right clamping groove, 22, left clamping groove, 23, lifting cap, 31, retaining ring, 32, U-shaped connecting frame, 40, U-shaped steel frame, 41, fixing sleeve, 43, triangular plate, 44, round shaft, 45, right connecting plate, 46, left connecting plate, 51, middle shaft, 52, supporting plate, 53, bottom plate, 61, traction frame, 62, driven storage rack, 63 and wheel.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the utility model comprises: the front support 1 is connected with the rear axle of the driving bicycle, the rear support is connected with the front axle of the driven bicycle, the rear end of the front support 1 is connected with the front end of the rear support through the middle rotating shaft 5, so that the front wheel of the driven bicycle is lifted off the ground, the rear support can rotate around the middle rotating shaft 5 in the left and right directions of the driving bicycle, and the driven bicycle turns along with the driving bicycle.

As shown in fig. 2, the front bracket 1 includes upper and lower U-shaped forks 13 and 14, which are reinforced by a connecting pipe 15 to form a triangular structure, so that the installation is simple and stable. The front ends of the branches of the two forks are correspondingly connected, and the arc-shaped rear ends are respectively connected with the middle rotating shaft 5. In addition, the arc-shaped rear ends of the upper U-shaped fork 13 and the lower U-shaped fork 14 are respectively provided with an upper lifting lug 16 and a lower lifting lug 17, the central holes of the upper lifting lug 16 and the lower lifting lug 17 are on the same straight line, and the straight line is perpendicular to the rear shaft of the driving bicycle and is used for connecting the upper end and the lower end of the middle rotating shaft 5.

As shown in fig. 3, the front ends of the two branches of the upper U-shaped fork 13 are further connected with a left suspension lug 12 and a right suspension lug 11 respectively, and the driving bicycle rear wheel axle is fixed by the left suspension lug 12 and the right suspension lug 11. Or as shown in fig. 4, the front ends of the two branches of the upper U-shaped fork 13 are respectively connected with a left pressing plate and a right pressing plate, the left pressing plate and the right pressing plate respectively press two ends of the rear wheel shaft of the driving bicycle, and the left pressing plate and the right pressing plate are fixed with the body of the driving bicycle through binding bands.

The rear bracket comprises an upper bracket 3, a middle bracket 2 and a lower bracket 4. Wherein: as shown in fig. 5, the upper bracket 3 includes a U-shaped connecting frame 32 and a retaining ring 31 welded at the front end of the arc, the U-shaped connecting frame 32 is movably connected to the middle rotating shaft 5 through the retaining ring 31, two branches of the U-shaped connecting frame 32 and the frame 20 are correspondingly connected through the rotating shaft, and the U-shaped frame 20 can rotate above and below the driving bicycle with the arc bottom of the U-shaped connecting frame as the axis.

As shown in FIG. 4, the middle bracket comprises a U-shaped frame 20, a left clamping groove 22, a right clamping groove 21 and a hanging cap 23. The arc front end of the U-shaped frame 20 is connected with the middle rotating shaft 5 and can rotate above and below the driving bicycle by taking the U-shaped frame as an axis, and the rear ends of the two branches of the U-shaped frame are correspondingly connected with the rear ends of the two branches of the U-shaped connecting frame 32 through the rotating shaft. The left clamping groove 22 and the right clamping groove 21 are used for fixing a front wheel shaft of the driven bicycle, can slide on the U-shaped frame 20, and can be fixed on the U-shaped frame 20 through bolts on the left clamping groove 22 and the right clamping groove 21 after being adjusted to proper positions. The hanging cap 23 is hitched on the rear ends of the two branches of the U-shaped frame 20 and fixed on the U-shaped frame 20 through bolts assembled on the hanging cap.

As shown in fig. 6, the lower bracket includes a U-shaped steel frame 40, a fixing sleeve 41 and a locking mechanism. A fixed sleeve 41 is respectively sleeved at the front ends of the two branches of the U-shaped steel frame 40 and can slide in the fixed sleeve 41, and after the U-shaped steel frame 40 is fixed with a driven bicycle frame, the position of the U-shaped steel frame 40 can be fixed through bolts on the fixed sleeve 41. The two branches of the U-shaped frame 20 are connected with the corresponding fixed sleeves 41 through a locking mechanism, and the locking mechanism is used for fixing the front wheel shaft of the driven bicycle. The arc-shaped rear end of the U-shaped steel frame 40 can be fixed on the driven bicycle frame.

As shown in fig. 8, the locking mechanism includes a left and a right locking slots 22, 21 respectively installed on two branches of the U-shaped frame 20 and capable of sliding, a left and a right connecting plates 46, 45 respectively installed on two fixing sleeves 41 of the U-shaped steel frame 40, and two triangular plate assemblies respectively installed on the left and the right connecting plates 46, 45; the triangular plate assembly mainly comprises two triangular plates 43 and a circular shaft 44 connecting the two triangular plates, the left clamping groove 22 and the right clamping groove 21 are installed between the two corresponding triangular plates 43, the front ends of the left clamping groove 22 and the right clamping groove 21 are installed between the front angles of the two corresponding triangular plates 43 through rotating shafts, and the central saddles of the left clamping groove 22 and the right clamping groove 21 are used for containing front wheel shafts of driven bicycles and fixing the front wheel shafts together with the circular shaft 44 capable of sliding into the corresponding central saddles. And, the rear ends of the left and right card slots 22, 21 and the rear corners of the triangular plate 43 are respectively provided with through holes, and when the two are overlapped, the rear ends of the left and right card slots 22, 21 can be fixed between the rear corners of the two corresponding triangular plates 43 by the pin shaft.

As shown in fig. 7, the central rotating shaft 5 includes a central shaft 51, a support plate 52 and a bottom plate 53, which are sleeved on the central shaft 51 and can rotate around the central shaft, the bottom plate 53 is connected with the support plate 52 and forms a convex ring with an inner hole perpendicular to the central shaft; the arc rear ends of the upper U-shaped fork 13 and the lower U-shaped fork 14 are respectively connected with the upper end and the lower end of the middle shaft through the upper lifting lug 16 and the lower lifting lug 17, the arc front end of the U-shaped connecting frame 32 is movably connected with the upper end and the lower end of the middle shaft through the retaining ring 31, and the arc front end of the U-shaped frame 20 is inserted in the convex ring, so that the middle bracket can rotate up and down on the driving bicycle by taking the arc bottom of the U-shaped frame 20 as an axis.

In practice, as shown in fig. 9, when the bicycle connector is used for connecting two bicycles in front and back, the front bracket is firstly connected with the rear wheel shaft of the driving bicycle, the lower bracket of the rear bracket is connected with the driven bicycle, then the circular shaft of the triangular plate component is abutted to the lower part of the front wheel shaft of the driven bicycle, the middle bracket is rotated clockwise, two ends of the front wheel shaft are respectively inserted into the central saddles of the left and right clamping grooves 22 and 21, the circular shaft can slide into the corresponding central saddles to block the notches of the left and right clamping grooves, so that the front wheel shaft of the driven bicycle is locked, and then the snap ring 31 at the front end of the upper bracket is hung on the upper end of the middle rotating shaft 5, so that the front wheel of the driven bicycle is lifted off. Therefore, the utility model discloses a to be connected around initiative bicycle and the driven bicycle, and when traveling around both, when the initiative bicycle in the front was turned, the driven bicycle at back was rotated around the pivot, followed the initiative bicycle and was turned.

As shown in fig. 10, when two bicycles connected in front and back are separated, the upper bracket 3 is only required to be taken down from the middle rotating shaft 5, and at this time, the middle bracket 2 and the lower bracket 4 rotate clockwise around the arc-shaped front end of the middle bracket 2 in the convex ring until the lower bracket 4 and the front wheel of the driven bicycle are placed on the ground; and then the middle bracket 2 is pulled upwards, so that the middle bracket 2 rotates anticlockwise around the arc front end of the middle bracket in the convex ring, the lower bracket 4 placed on the ground rotates clockwise around the rotating shafts at the front ends of the left clamping groove 22 and the right clamping groove 21, so that the central saddle is gradually separated from the corresponding circular shaft 44, and after the locking mechanism is opened to a proper angle, the front wheel shaft of the driven bicycle clamped in the central saddles of the left clamping groove 22 and the right clamping groove 21 is taken down. After the front shaft of the driven bicycle is taken down, the lower bracket 4 rotates anticlockwise around the rotating shaft at the front ends of the left clamping groove 22 and the right clamping groove 21, the rear angle of the triangular plate 43 is coincided with the through holes corresponding to the front ends of the left clamping groove 22 and the right clamping groove 21, the pin shaft is inserted, the middle bracket 2 and the lower bracket 4 form a whole, the upper bracket 3 is pulled towards the front upper part of the driving bicycle, the upper bracket 3 is pulled to be connected with the driving bicycle, and the middle, lower and upper brackets 2 and 4 are folded towards the front upper part of the driving bicycle, so that the bicycle connector is folded. Therefore, the utility model discloses a when initiative bicycle is not connected with the driven bicycle, upper, middle and lower bracket 3, 2, 4 can fold together, articulate in initiative bicycle rear through fore-stock 1.

Furthermore, the utility model discloses on the unchangeable basis of fore-stock 1 and well pivot 5, still can be with the back bracket design for the driven thing car of putting, the back bracket front end alternates in this protruding circle, and the back bracket can be around the pivot about the initiative bicycle direction rotation. Specifically, this rear bracket includes traction frame 61, driven supporter 62 and wheel 63, and the front end of traction frame 61 alternates in the convex circle of axis of rotation 5, and driven supporter 62 is connected to the rear end of traction frame 61, and wheel 63 installs on driven supporter 62. As shown in fig. 11, four wheels 63 are symmetrically mounted on the wheel holder at the bottom of the driven shelf 62 in two rows, and the rear bracket is shaped like a flat car. As shown in fig. 12, the wheel 63 is mounted on a wheel holder at the rear end of the driven shelf 62, and the rear bracket is shaped like a wheelbarrow. The structure of the object placing vehicle can be adjusted according to actual needs.

During implementation, when the object carrying space of the driving bicycle needs to be expanded, the driving bicycle rear part connected with the rear bracket through the bicycle connector can place objects on the driven object placing frame 62, and the bicycle connector is particularly suitable for being used by take-out and express personnel, is flexible to assemble, convenient to mount and dismount and convenient to use.

The utility model discloses a fastener can be the bolt, also can be rivet etc.. The above is only the feasible embodiment of the preferred of the present invention, not limiting the protection scope of the present invention, all the changes of the equivalent structure made by the contents of the specification and the drawings of the present invention are included in the protection scope of the present invention.

Claims (10)

1. A bicycle connector is characterized by comprising a front bracket, a middle rotating shaft and a rear bracket; the front support comprises an upper U-shaped fork, a lower U-shaped fork and a connecting pipe for connecting the upper U-shaped fork and the lower U-shaped fork, the front ends of the two branches of the upper U-shaped fork and the lower U-shaped fork are respectively and correspondingly connected, and the front ends of the two branches of the upper U-shaped fork are used for connecting two ends of a rear wheel shaft of the driving bicycle; the middle rotating shaft comprises a middle shaft and a steering plate which is sleeved on the middle shaft and can rotate around the middle shaft, the upper end and the lower end of the middle rotating shaft are respectively connected with the arc-shaped rear ends of the upper U-shaped fork and the lower U-shaped fork, and a convex ring with a central shaft vertical to the middle shaft is arranged on the steering plate; the front end of the rear bracket is inserted in the convex ring, and the rear bracket can rotate around the middle rotating shaft in the left and right directions of the driving bicycle.

2. The bicycle connector according to claim 1, wherein the front ends of the two branches of the upper U-shaped fork are respectively connected with a left lug and a right lug, and the left lug and the right lug are used for connecting two ends of a rear wheel shaft of the active bicycle.

3. The bicycle connector according to claim 1, wherein the front ends of the two branches of the upper U-shaped fork are respectively connected with a left pressing plate and a right pressing plate, and the left pressing plate and the right pressing plate can press two ends of the rear wheel shaft of the driving bicycle and are fixed with the body of the driving bicycle through a binding band.

4. The bicycle connector according to claim 1, wherein the rear bracket comprises a traction frame, a driven object placing frame and wheels, the front end of the traction frame is inserted into the convex ring of the middle rotating shaft, the rear end of the traction frame is connected with the driven object placing frame, and the wheels are mounted on the driven object placing frame.

5. A bicycle connector in accordance with claim 4, wherein the wheels are symmetrically mounted to the bottom of the driven storage rack.

6. A bicycle connector according to claim 4, wherein the wheel is mounted to the rear of the trailing truck frame.

7. The bicycle coupler of claim 1, wherein the rear bracket includes upper, middle and lower brackets for coupling to a driven bicycle and enabling a front wheel of the driven bicycle to be lifted off the ground; the main body of the upper bracket is a U-shaped connecting frame, and the arc front end of the upper bracket is movably connected with the top end of the middle rotating shaft; the main body of the middle bracket is a U-shaped frame, the arc front end of the middle bracket is inserted in the convex ring and can rotate in the vertical direction of the driving bicycle by taking the middle bracket as a shaft, and the rear ends of the two branches of the middle bracket are correspondingly connected with the rear ends of the two branches of the U-shaped connecting frame through rotating shafts; the main body of the lower bracket is a U-shaped steel frame, the front ends of the two branches are correspondingly connected with the two branches of the U-shaped frame through locking mechanisms respectively, the arc-shaped rear end of the lower bracket is used for being connected with a driven bicycle frame, and the locking mechanisms are used for fixing two ends of a front wheel shaft of the driven bicycle.

8. The bicycle connector according to claim 7, wherein the locking mechanism comprises left and right locking grooves slidably mounted on two branches of the U-shaped frame, two triangular plate assemblies mounted on two branches of the U-shaped frame; the triangular plate component comprises two triangular plates and a circular shaft connecting vertex angles of the two triangular plates; the front ends of the left and right clamping grooves are arranged between the front angles of the two corresponding triangular plates through rotating shafts, and the central saddles of the left and right clamping grooves are used for accommodating the front wheel shaft of the driven bicycle and fixing the front wheel shaft together with the round shaft which can slide into the corresponding central saddles.

9. The bicycle connector according to claim 8, wherein the rear ends of the left and right engaging grooves and the rear corners of the triangular plates are respectively provided with through holes, and when the through holes are overlapped, the rear ends of the left and right engaging grooves can be fixed between the rear corners of the corresponding triangular plates by the pin.

10. The bicycle connector according to claim 7, wherein the two branches of the U-shaped steel frame are respectively provided with a fixing sleeve, the U-shaped steel frame can slide along the inside of the fixing sleeve and is fixed in position through bolts, and the fixing sleeve is connected with the corresponding triangular plate assembly through a connecting plate.

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