CN218368135U

CN218368135U - Foldable bicycle capable of forming two-wheeled parallel cart

Info

Publication number: CN218368135U
Application number: CN202222738505.0U
Authority: CN
Inventors: 许晓亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-01-24
Anticipated expiration: 2032-10-18

Abstract

The utility model discloses a bicycle of parallel shallow of collapsible formation two-wheeled, including front truck portion, back truck portion and folding truck roof beam portion, folding truck roof beam portion is used for front truck portion and back truck portion of butt joint all around, folding truck roof beam portion is including folding truck roof beam and enhancement truck roof beam, folding truck roof beam is located strengthen truck roof beam upper portion, folding truck roof beam includes first truck roof beam and second truck roof beam, first truck roof beam with second truck roof beam hinge connects the cooperation, and is the folding rotation of horizontal direction, first truck roof beam front end and front truck portion cooperation installation, second truck roof beam and back truck portion hinge cooperation, the second truck roof beam with back truck portion is the folding rotation of horizontal direction, it cooperates with front truck portion and back truck portion respectively to strengthen truck roof beam both ends, wherein one end is articulated cooperation, and the other end is the demountable installation cooperation. The utility model discloses optimize whole frame structure, can realize the folding of many specifications wheel footpath bicycle, and use after convenient folding.

Description

Foldable bicycle capable of forming two-wheeled parallel cart

Technical Field

The utility model relates to a bicycle technical field, in particular to collapsible bicycle that forms parallel shallow of two-wheeled.

Background

The folding bicycles popular in the market at present have various types and folding modes, and the common purpose of folding the bicycles is to reduce the volume of the bicycle and facilitate carrying, storage and preservation. Although the folding type bicycle effectively reduces the volume in the folding state, the folding type bicycle mostly loses the function of normally riding or pushing on the ground, and particularly in some occasions which are not suitable for riding but need to walk for a long distance, the folding type bicycle can be carried under the condition of reducing the volume after being folded, but still needs to be carried by a user in a hand-held or shoulder-carried mode, is labor-consuming and inconvenient, and sometimes even becomes burdensome for traveling. The function of the existing folding bicycle is limited to changing the overall dimension, reducing the occupied space for storage and being convenient for carrying.

Like notice number CN207631413U, disclose a simple structure, folding efficient, through good bicycle folding mechanism of nature, it includes: a telescopic front support assembly, a telescopic main support assembly, a head pipe assembly, a saddle assembly and a rear wheel assembly; one end of the head pipe assembly is connected with the front support assembly in a shaft-rotating manner, and the other end of the head pipe assembly is connected with the main support assembly in a shaft-rotating manner; the saddle assembly is provided with a seat tube which is connected with the main bracket assembly in a rotating shaft manner; the rear wheel assembly is provided with a rear wheel fork connected with the main bracket in a rotating shaft manner and rear wheel fork connecting rods arranged between the rear wheel fork and the seat tube and respectively connected in a rotating shaft manner.

If the publication number is CN213620094U, the folding bicycle comprises a frame, a seat pipe and a head pipe which are connected to the frame, wherein the frame comprises a vertical pipe, a head pipe and a cross beam connected between the vertical pipe and the head pipe, the front end and the rear end of the cross beam can be folded, and the folding direction of the front end of the cross beam is opposite to the folding direction of the rear end of the cross beam; the lower side of the head pipe can be vertically folded. The foldable bicycle that this application embodiment provided can be folded at crossbeam front end position for locomotive department is folded towards automobile body one side, can also be folded at crossbeam rear end position, makes the bicycle by folding from the middle part, and the head tube can be folded towards the downside, makes the handlebar lie in one side of bicycle front wheel after being folded.

However, most of the existing folding bicycles usually adopt a small wheel diameter specification, and the wheel size specification is usually 20, 16 inches or even smaller, so that the bicycle has poor passing performance, relatively poor comfort and relatively slow speed when being ridden. The existing bicycle adopting a large wheel diameter has the wheel diameter size of 26 inches or more generally, the bicycle of the type can not realize a good folding effect generally, the size of the bicycle is reduced after a front wheel or a rear wheel is disassembled quickly, the function of utilizing wheels to move is lost after the bicycle is disassembled and folded, a user needs to carry the bicycle by himself, labor and expense are wasted, and the folded size of the bicycle with a folding structure is still large, the compactness is insufficient, and the using effect is influenced; meanwhile, for the existing folding bicycle with the specification and the size of the small wheel diameter, a single main beam parallel bar folding structure is usually adopted, so that the stability of the whole bicycle beam is relatively poor.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model aims at providing a collapsible bicycle that forms two-wheeled parallel shallow optimizes overall frame structure, can realize the folding of many specifications wheel footpath bicycle, and after convenient folding, can realize carrying out the use.

The utility model provides a technical problem can adopt following technical scheme to realize:

the utility model provides a collapsible bicycle that forms parallel shallow of two-wheeled, includes front truck portion, back car portion and folding car roof beam portion, folding car roof beam portion is used for front and back butt joint front truck portion and back car portion, folding car roof beam portion is including folding car roof beam and reinforcing car roof beam, folding car roof beam is located reinforcing car roof beam upper portion, folding car roof beam includes first car roof beam and second car roof beam, first car roof beam with the cooperation is connect to the second car roof beam hinge, and is the folding rotation of horizontal direction, first car roof beam front end and front truck portion cooperation installation, second car roof beam and the articulated cooperation of back car portion, the second car roof beam with back car portion is the folding rotation of horizontal direction, reinforcing car roof beam wherein one end is articulated cooperation, and the other end is the demountable installation cooperation.

When the detachable end of the reinforced vehicle beam is detached, the first vehicle beam drives the front vehicle part to be folded along the horizontal direction to form 90-degree matching relative to the second vehicle beam, and the second vehicle beam is folded along the horizontal direction to form 90-degree matching relative to the rear vehicle part, so that front wheels in the front vehicle part and rear wheels in the rear vehicle part are in a parallel state, and the two wheels are in a concentric position.

The first vehicle beam and the second vehicle beam hinged structure and the second vehicle beam and the rear vehicle part hinged structure are hinged structures capable of limiting and locking.

The front vehicle part comprises a handlebar part, a vehicle pipe part and a front wheel, wherein a first mounting seat and a second mounting seat are arranged on the vehicle pipe part, the first mounting seat is used for being matched with a first vehicle beam, and the second mounting seat is used for being matched with a reinforced vehicle beam; the handlebar portion is including the handlebar that is located both ends and the handlebar pipe of connecting both ends handlebar, the handlebar is relative the handlebar pipe is beta structure, handlebar pipe lower part and the fixed cooperation of handlebar portion, handlebar pipe lower part is through front fork and wheel cooperation.

The front portion of the bicycle includes handlebar portion, tube portion and front wheel, be equipped with the fifth mount pad in the tube portion of the bicycle, the fifth mount pad be used for with the fixed cooperation of first car roof beam, first car roof beam lower part still through the reinforcing beam pipe with the cooperation of fifth mount pad, one end in first car roof beam and the reinforcing car roof beam is for dismantling fixed cooperation, the reinforcing car roof beam other end is with the articulated cooperation of back car portion.

The reinforced vehicle beam comprises a reinforced cross beam and a reinforced oblique beam, a triangular structure is formed among the reinforced cross beam, the reinforced oblique beam and the longitudinal beam, and the reinforced cross beam and the reinforced oblique beam are matched with the longitudinal beam in a hinged structure.

Strengthen the car roof beam including strengthening fixed beam and strengthening the walking beam, strengthen fixed beam and be located first car roof beam lower part, strengthen the fixed beam other end and be used for with strengthen the articulated cooperation of walking beam, strengthen the walking beam other end and be used for with the butt joint of second crossbeam to can dismantle fixed mounting with first crossbeam or second crossbeam.

The rear vehicle part comprises a vehicle frame, the vehicle frame comprises a rear vehicle main beam and a butt-joint beam assembly, the butt-joint beam assembly is used for being matched with the folding vehicle beam part and the reinforced vehicle beam, the butt-joint beam assembly comprises a first cross beam, a second cross beam and a longitudinal beam, the first cross beam is continuously arranged towards the front vehicle part in an extending mode, and the first cross beam and the reinforced movable beam are overlapped in a vertical plane direction in an up-and-down parallel mode.

The rear vehicle part comprises a seat, a frame and a rear wheel, the seat is located on the upper portion of the frame, the frame comprises a rear vehicle main beam, a butt joint beam assembly and a rear vehicle fork, the butt joint beam assembly and the rear vehicle fork are fixedly installed on the rear vehicle main beam, the butt joint beam assembly is used for being matched with the folding vehicle beam part, and the rear vehicle fork is used for being matched with the rear wheel.

The butt joint beam assembly comprises a first cross beam, a second cross beam and a longitudinal beam, a third mounting seat is arranged at the butt joint of the first cross beam and the longitudinal beam, the third mounting seat is used for being installed in a matched mode with the second cross beam, a fourth mounting seat is arranged at the butt joint of the second cross beam and the longitudinal beam, and the fourth mounting seat is used for being installed in a matched mode with a reinforced vehicle beam.

The first beam, the second beam and the first beam are mutually folded to form a U-shaped structure.

The second mounting seat is detachably mounted and matched with the reinforced vehicle beam, the fourth mounting seat is hinged and matched with the reinforced vehicle beam, and the hinge structure of the fourth mounting seat and the reinforced vehicle beam is of a hinge structure capable of limiting and locking.

The second mounting seat is in hinged fit with the reinforced vehicle beam, the hinge structure of the second mounting seat and the reinforced vehicle beam is a hinge structure capable of limiting and locking, and the fourth mounting seat is in detachable fit with the reinforced vehicle beam.

Compared with the prior art, the utility model following beneficial effect has: the utility model optimizes the whole frame structure, has simple and practical structure, optimizes the folding bicycle beam to realize the folding of the bicycle to form a cart structure, is convenient for a user to use under a special environment, can realize pushing by utilizing wheels and is convenient for carrying; simultaneously, add the stability that strengthens the car roof beam and improve whole frame, adopt single-ended detachable construction to be convenient for realize folding cooperation with folding car roof beam.

The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.

Drawings

FIG. 1 is a first schematic structural view of the bicycle riding state of the present invention;

FIG. 2 is a second schematic structural view of the bicycle in the riding state of the present invention;

FIG. 3 is a first schematic structural view of the reinforcing beam of the bicycle in a disassembled state;

fig. 4 is a first structural diagram of the state of the folding cart of the present invention;

FIG. 5 is a third schematic view of the riding state structure of the bicycle of the present invention;

FIG. 6 is a partially enlarged view of the portion A in FIG. 5;

fig. 7 is a second structural schematic view of the state of the folding cart of the present invention;

FIG. 8 is a partially enlarged structural view of the portion B in FIG. 7;

fig. 9 is a fourth structural schematic view of the bicycle riding state of the present invention;

FIG. 10 is a schematic view of a beam structure of the foldable cart of the present invention;

FIG. 11 is a second schematic structural view of the bicycle reinforcing beam of the present invention in a disassembled state;

fig. 12 is a third structural schematic view of the state of the folding cart of the present invention;

fig. 13 is a fifth structural schematic view of the bicycle riding state of the present invention;

FIG. 14 is a third schematic structural view of the reinforcement beam of the bicycle in a disassembled state;

FIG. 15 is a fourth schematic structural view of the reinforcing beam of the bicycle in a disassembled state;

fig. 16 is a first structural diagram of the state of the folding vehicle beam of the present invention;

fig. 17 is a second structural schematic view of the state of the folding vehicle beam of the present invention;

fig. 18 is a fourth structural schematic diagram of the state of the folding cart of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Example 1

Referring to fig. 1 to 8, the present embodiment discloses a foldable bicycle capable of forming a two-wheeled parallel stroller, particularly suitable for a bicycle with a large wheel diameter, including a front portion 100, a rear portion 300 and a foldable beam portion 200, wherein the foldable beam portion 200 is used for connecting the front portion 100 and the rear portion 300 in a front-rear manner to form an integral bicycle structure, and the foldable beam portion 200 can be folded and collapsed to form 2 different states, namely a riding state and a foldable stroller state.

In a specific structure, the front vehicle portion 100 includes a handle bar portion 110, a vehicle tube portion 120 and a front wheel 130, the vehicle tube portion 120 is provided with a first mounting seat 121 and a second mounting seat 122, the first mounting seat 121 is configured to be matched with a first vehicle beam 211, wherein the first mounting seat 121 may be a welding portion of the first vehicle beam 211 and the vehicle tube portion 120, the first vehicle beam 211 and the vehicle tube portion 120 are directly welded and fixed into a whole, and the second mounting seat 122 is configured to be matched with a reinforced vehicle beam 220; the handle bar portion 110 includes a handle bar 112 at two ends and a handle bar tube 111 connecting the handle bar 112 at two ends, the handle bar 112 is of a folding structure relative to the handle bar tube 112, wherein the handle bar 112 and the handle bar tube 111 may preferably adopt a hinge structure capable of limiting and locking, generally a downward folding structure, and according to specific use, it may be a double folding structure or a single folding structure, the lower portion of the handle bar tube 111 is fixedly matched with the handle bar portion 120, and the lower portion of the handle bar portion 120 is matched with the wheel 130 through a front fork 123.

In a specific structure, the rear body 300 includes a seat 310, a frame 320 and a rear wheel 330, the seat 310 is located on the upper portion of the frame 320, the frame 320 includes a rear body main beam 323, a butt-joint beam assembly and a rear fork 327, the butt-joint beam assembly and the rear fork 327 are both fixedly mounted with the rear body main beam 323, the butt-joint beam assembly is used for being matched with the folding body beam portion 200, and the rear fork 327 is used for being matched with the rear wheel 330; a rear reinforcement beam 340 is generally disposed between the lower portion of the rear fork 327 and the lower portion of the rear main beam 323, so that the rear reinforcement beam 340, the rear fork 327, and the rear main beam 323 form a triangular structure to increase the overall stability of the frame 320, and a sprocket assembly is generally disposed at the joint position of the rear main beam 323, the butt-joint beam assembly, and the rear reinforcement beam 340 in a matching manner, and includes a chain, front teeth, pedals, and the like.

Further, the butt-joint beam assembly comprises a first cross beam 324, a second cross beam 325 and a longitudinal beam 326, a third installation seat 321 is arranged at the butt-joint position of the first cross beam 324 and the longitudinal beam 326, the third installation seat 321 is used for being matched and installed with the second vehicle beam 212, a fourth installation seat 322 is arranged at the butt-joint position of the second cross beam 325 and the longitudinal beam 326, and the fourth installation seat 322 is used for being matched and installed with the reinforced vehicle beam 220; the first cross beam 324, the second cross beam 325, the longitudinal beam 326 and the rear main beam 323 form a triangular structure, wherein the first cross beam 324 and the second cross beam 325 are parallel to each other to increase the overall stability of the frame 320.

In a specific structure, the foldable car beam portion 200 includes a foldable car beam 210 and a reinforced car beam 220, the foldable car beam 210 is located on the upper portion of the reinforced car beam 220, the foldable car beam 210 includes a first car beam 211 and a second car beam 212, the first car beam 211 and the second car beam 212 are in hinged fit and are in folding rotation in a horizontal direction, the front end of the first car beam 211 is in matched installation with the front car portion 100 and preferably are in a fixed installation structure, the second car beam 212 is in hinged fit with the rear car portion 300, the second car beam 212 is in folding rotation in a horizontal direction with the rear car portion 300 and specifically are arranged concentrically, two ends of the reinforced car beam 220 are respectively matched with the front car portion 100 and the rear car portion 300, one end of the reinforced car beam is in hinged fit and the other end is in detachable installation fit.

When the bicycle is in a riding state, the first bicycle beam 211 and the second bicycle beam 212 are in the same axial state, and simultaneously keep being in a coaxial state with the first cross beam 324, the reinforced bicycle beam 220 and the second cross beam 325 are in a coaxial state, so that the first bicycle beam 211 and the second bicycle beam 212 are parallel up and down relative to the reinforced bicycle beam 220, and the front bicycle portion 100 and the rear bicycle portion 300 are arranged at two ends of the folded bicycle beam portion to form a riding state; the articulated regions of the individual parts are in the locked state.

When the foldable cart state is needed, after the reinforced cart beam 220 is disassembled through the detachable end, the first cart beam 211 drives the front cart portion to be folded along the horizontal direction to form 90-degree matching relative to the second cart beam 212, the second cart beam 212 is folded along the horizontal direction to form 90-degree matching relative to the rear cart portion 300, and the first cart beam 211, the second cart beam 212 and the first cross beam 324 are folded with each other to form a U-shaped structure, so that the front wheel 130 in the front cart portion 100 and the rear wheel 330 in the rear cart portion 300 are in a parallel state, and the two wheels are in a concentric position; the front car portion 100 and the rear car portion 300 are disposed on the same side, wherein the reinforced car beam 220 can be movably folded after being detached from one end, so that the user can carry and push the reinforced car beam conveniently.

In one preferred embodiment, the second mounting seat 122 is detachably mounted and matched with the reinforced vehicle beam 220, the fourth mounting seat 322 is hinged and matched with the reinforced vehicle beam 220, and the hinge structure of the fourth mounting seat 322 and the reinforced vehicle beam 220 is a hinge structure capable of limiting and locking; wherein, demountable installation structure adopts the lug piece of mutual butt joint, carries out coaxial fixed through dismantling the lockpin, and in addition, demountable installation structure commonly used among the prior art such as joint, grafting, hasp can also be adopted to demountable installation structure.

In one preferred embodiment, the second mounting seat 122 is in hinged fit with the reinforced vehicle beam 220, the hinge structure of the second mounting seat 122 and the reinforced vehicle beam 220 is a hinge structure capable of limiting and locking, and the fourth mounting seat 322 is in detachable fit with the reinforced vehicle beam 220; wherein, demountable installation structure adopts the lug spare of mutual butt joint, carries out coaxial fixed through removable lock pin, and in addition, demountable installation structure commonly used among the prior art such as joint, grafting, hasp can also be adopted to the demountable installation structure.

In combination with the above, the hinge structures of the first and

second vehicle beams

211 and 212 and the hinge structures of the second and

rear vehicle beams

212 and 300 are hinge structures capable of limiting and locking, and the hinge structures capable of limiting and locking can be applied according to corresponding specifications according to use requirements; in addition, the hinge structure of the fourth mounting seat 322 and the reinforced vehicle beam 220 adopts a hinge structure capable of limiting and locking; or, the hinge structure of the second mounting seat 122 and the reinforced vehicle beam 220 adopts a hinge structure capable of limiting and locking; the hinge structure capable of limiting and locking is a common design in the prior art, such as a locking hinge mechanism with a notice number of CN203041514U and used for a foldable playground frame; for example, the publication number is CN203835894U, the disclosed 90-degree elbow rapid locking two-dimensional hinge assembly part; in addition, the multi-angle limiting hinge mechanism for connecting rod-shaped parts is preferably adopted, and the name of the multi-angle limiting hinge mechanism is 2022209275565 which is independently developed by the applicant.

The utility model optimizes the whole frame structure, has simple and practical structure, can realize the folding of the bicycle with the big wheel diameter to form a cart structure by optimally adopting the folding vehicle beam, is convenient for a user to use under a special environment and is convenient to carry; the folding bicycle can also be suitable for folding bicycles with wheel diameters of other specifications; simultaneously, add the stability that strengthens the car roof beam and improve whole frame, adopt single-ended detachable construction to be convenient for realize folding cooperation with folding car roof beam.

Example 2

Based on embodiment 1, with reference to fig. 9 to 12, this embodiment discloses a bicycle capable of being folded to form a two-wheeled parallel cart, which is particularly suitable for bicycles with large wheel diameters.

Among them, the alternative features of this embodiment and embodiment 1 are: the reinforced vehicle beam 220 of the single-beam structure used in embodiment 1 is optimized and improved, and specifically includes: preceding car portion 100 includes handlebar portion 110, tube portion 120 and front wheel 130, be equipped with fifth mount pad 124 on the tube portion 120, fifth mount pad 124 is used for the fixed cooperation with first roof beam 211, first roof beam 211 lower part is still through reinforcing beam pipe 125 and the cooperation of fifth mount pad 124, one end in first roof beam 211 and the reinforcing beam 220 is for dismantling fixed cooperation, the reinforcing beam 220 other end is articulated the cooperation with rear car portion 300, get rid of the second crossbeam structure in the butt joint beam subassembly of frame 320 in rear car portion 300, be convenient for the rotation of reinforcing beam 220.

The reinforced vehicle beam 220 comprises a reinforced cross beam 221 and a reinforced oblique beam 222, a triangular structure is formed among the reinforced cross beam 221, the reinforced oblique beam 222 and the longitudinal beam 326, and the reinforced cross beam 221, the reinforced oblique beam 222 and the longitudinal beam 326 are matched in a hinged structure.

After the reinforced vehicle frame 220 is optimized, a triangular structure is formed among the reinforced cross beam 221, the reinforced oblique beam 222 and the longitudinal beam 326, so that the stability of the whole vehicle frame is improved.

The hinge structures adopted in the embodiment all adopt the hinge structures corresponding to those in the embodiment 1, and preferably adopt hinge structures capable of limiting and locking.

In the embodiment, the whole frame moving mechanism is less, the parts of the frame main body form a triangular stable structure, so that good stress performance is ensured when the vehicle is used, and the frame is also ensured to have better rigidity and stability.

Example 3

Based on embodiment 1, with reference to fig. 13 to 18, this embodiment discloses a bicycle capable of being folded to form a two-wheeled parallel cart, which is suitable for a bicycle with a small wheel diameter specification.

Among them, the present embodiment and embodiment 1 have the following alternative features: the reinforced vehicle beam 220 of the single-beam structure used in embodiment 1 is optimized and improved, and specifically includes: the reinforced vehicle beam 220 comprises a reinforced fixed beam 223 and a reinforced movable beam 224, wherein the reinforced fixed beam 223 is positioned at the lower part of the first vehicle beam 211, the other end of the reinforced fixed beam 223 is used for being hinged and matched with the reinforced movable beam 224, and the other end of the reinforced movable beam 224 is used for being butted with the second cross beam 325 and being detachably and fixedly installed with the first cross beam 324; the rear vehicle portion 300 comprises a vehicle frame 320, the vehicle frame 320 comprises a rear main beam 323 and a butt-joint beam assembly, the butt-joint beam assembly is used for being matched with the folding vehicle beam portion 210 and the reinforcing vehicle beam portion 220, the butt-joint beam assembly comprises a first cross beam 324, a second cross beam 325 and a longitudinal beam 326, the first cross beam 324 continuously extends towards the front vehicle portion 100 relative to the longitudinal beam 326, and the first cross beam 324 and the reinforcing movable beam 224 are overlapped in a vertical plane direction in an up-and-down parallel mode.

The design is optimized, the first cross beam 324 is lengthened, the first cross beam is overlapped with the reinforcing movable beam 224, the double beams can be fixed up and down through the detachable fixing structure, in the preferred design, the first vehicle beam 211 and the reinforcing fixed beam 223 are in butt joint fixing through the preferred bolts, and therefore the folding vehicle beam and the reinforcing vehicle beam are enabled to be of a firmer integral structure.

In one preferred embodiment, the first cross beam 324 and the second cross beam 325 both adopt an elongated extension structure design, wherein the longitudinal beam 326 can be fixedly installed with the second cross beam 325, the other ends of the first cross beam 324 and the second cross beam 325 are fixedly installed and matched through a sixth installation seat 350, and the sixth installation seat 350 is located on a rear main beam 323 of the frame 320; the seventh mounting seat 230 is arranged at the other end of the first cross beam 324 and the second cross beam 325, wherein the seventh mounting seat 230 comprises an upper collar 232 fixedly mounted with the first cross beam 324 and a lower collar 231 fixedly mounted with the second cross beam 325, respectively, the outer end of the lower collar 231 is provided with a butt-joint groove 233, the butt-joint groove 233 is provided with a locking hole 234 in a matching manner, the end of the reinforcing movable beam 224 is provided with a locking pin seat 250, the locking pin seat 250 is provided with a locking pin 251 in a matching manner, after the reinforcing movable beam 224 is in butt joint with the second cross beam 325, the locking pin seat 251 is mounted in a matching manner with the butt-joint groove 233, and the reinforcing movable beam 224 is fixedly mounted by fixing the locking pin 251 and the locking hole 234.

The end part of the reinforcing fixed beam 223 and the end part of the first vehicle beam 211 are preferably provided with an eighth mounting seat 240 in a matching mode, and the eighth mounting seat 240 preferably adopts an 8-shaped annular sleeve structure, so that double-beam fixing is conveniently realized; in other embodiments, other structures may be used for installation and fixation.

In this embodiment, the longitudinal beam 326 is shortened in length, the length specification and size of the reinforcing beam 220 and the folding beam 210 are maintained, the structure is optimized, the foldable bicycle can be used for the foldable bicycle with the small wheel diameter specification, and the structure is convenient to disassemble and fold.

In the integral structure, the first cross beam 324 and the first vehicle beam 211 are respectively and preferably fixed with the rear vehicle part 300 and the front vehicle part 100, and are generally fixed into a whole by welding, the second vehicle beam 212 is arranged between the first cross beam 324 and the first vehicle beam 211, and two ends of the second vehicle beam 212 are respectively hinged and matched with the first cross beam 324 and the first vehicle beam 211, so that the horizontal folding arrangement can be realized; the second cross beam 325 and the reinforcing fixed beam 223 are preferably fixed with the rear vehicle portion 300 and the front vehicle portion 100, and are usually welded and fixed together, and a reinforcing movable beam 224 is disposed between the second cross beam 325 and the reinforcing fixed beam 223, wherein a hinge structure is preferably adopted between the reinforcing movable beam 224 and the reinforcing fixed beam 223, and the other end and the overlapped first cross beam 324 adopt a detachable fixed structure, and in other embodiments, a detachable fixed structure can be adopted instead of the end of the second cross beam 325.

When the vehicle is unfolded, the first cross member 324, the second vehicle beam 212 and the first vehicle beam 211 are integrally formed into an upper vehicle beam structure, the second cross member 325, the reinforcing movable beam 224 and the reinforcing fixed beam 223 are formed into a lower vehicle beam structure, and the upper vehicle beam and the lower vehicle beam can be butted and fixed through fixing members, so that an integral vehicle beam structure is formed, and the stability is good.

When the vehicle is folded, the reinforcing mobile beam 224 is detached from the first cross beam 324 or the second cross beam 325, and the reinforcing mobile beam 224 is rotated to other positions through the hinged fit with the reinforcing fixed beam 223; the first cross beam 324, the second cross beam 212 and the first cross beam 211 in the upper frame are folded according to the corresponding folding structures in embodiment 1, so that the front frame 100 and the rear frame 300 are parallel.

In one preferred embodiment, as shown in fig. 15 and 16, the second vehicle beam 212 may be designed in a telescopic rod structure, preferably in a double-rod telescopic structure, because the second vehicle beam 212 is relatively less disturbed by force during the whole riding process, and therefore, in order to have better stroller space after being folded to form the stroller structure, the second vehicle beam 212 is preferably configured in a telescopic structure, and a stroller with larger space is formed after being extended, so that the using effect of the product is improved.

In other structures, the structures of the handle bar portion 110, the tube portion 120, the rear frame main beam 323, etc. may preferably adopt a telescopic structure, wherein the handle bar portion 110 may adopt a folding structure, etc.

The embodiment has increased the fixed connection link relative to embodiment 1, has increased vehicle overall rigidity and stability, has reduced a plurality of moving mechanism, has reduced the complex operation degree that folding expansion, has simplified mechanism's accessory, has simplified the manufacturing and assembling process, also the cost is reduced, and the folding bicycle of specially adapted truckle footpath specification uses.

The above, it is only the preferred embodiment of the present invention, not to make any restriction on the utility model, all the bases the technical principle of the present invention is to any simple modification, equivalent change or modification made by the above embodiments, still belong to the technical solution scope of the present invention.

Claims

1. The utility model provides a bicycle of parallel shallow of collapsible formation two-wheeled, includes preceding car portion, back car portion and folding car roof beam portion, folding car roof beam portion is used for front and back butt joint preceding car portion and back car portion, its characterized in that: folding car roof beam portion is including folding car roof beam and enhancement car roof beam, folding car roof beam is located strengthen car roof beam upper portion, folding car roof beam includes first car roof beam and second car roof beam, first car roof beam with second car roof beam hinge cooperation, and be the folding rotation of horizontal direction, first car roof beam front end and preceding car portion cooperation installation, second car roof beam and the articulated cooperation of back car portion, second car roof beam with back car portion is the folding rotation of horizontal direction, enhancement car roof beam wherein one end is articulated cooperation, and the other end is the demountable installation cooperation.

2. A bicycle foldable to form a two wheeled parallel stroller according to claim 1, wherein: when the detachable end of the reinforced vehicle beam is detached, the first vehicle beam drives the front vehicle part to be folded along the horizontal direction to form 90-degree fit relative to the second vehicle beam, and the second vehicle beam is folded along the horizontal direction to form 90-degree fit relative to the rear vehicle part, so that front wheels in the front vehicle part and rear wheels in the rear vehicle part are in a parallel state.

3. A bicycle foldable to form a two wheeled parallel stroller according to claim 2, wherein: the first vehicle beam and the second vehicle beam hinged structure and the second vehicle beam and the rear vehicle part hinged structure are hinged structures capable of limiting and locking.

4. A bicycle foldable to form a two wheeled parallel stroller according to claim 1, wherein: the front bicycle part comprises a bicycle handlebar part, a bicycle tube part and a front wheel, wherein a first mounting seat and a second mounting seat are arranged on the bicycle tube part, the first mounting seat is used for being matched with a first bicycle beam, and the second mounting seat is used for being matched with a reinforced bicycle beam; the handlebar portion is including the handlebar that is located both ends and the handlebar pipe of connecting both ends handlebar, the handlebar is relative the handlebar pipe is beta structure, handlebar pipe lower part and the fixed cooperation of handlebar pipe portion, front fork and wheel cooperation are passed through to handlebar pipe portion lower part.

5. A bicycle foldable to form a two wheeled parallel stroller according to claim 1, wherein: the front portion of the bicycle includes handlebar portion, tube portion and front wheel, be equipped with the fifth mount pad in the tube portion of the bicycle, the fifth mount pad be used for with the fixed cooperation of first car roof beam, first car roof beam lower part still through the reinforcing beam pipe with the cooperation of fifth mount pad, one end in first car roof beam and the reinforcing car roof beam is for dismantling fixed cooperation, the reinforcing car roof beam other end is with the articulated cooperation of back car portion.

6. A bicycle foldable to form a two wheeled parallel stroller according to claim 5, wherein: the reinforced vehicle beam comprises a reinforced cross beam and a reinforced oblique beam, a triangular structure is formed among the reinforced cross beam, the reinforced oblique beam and the longitudinal beam, and the reinforced cross beam and the reinforced oblique beam are matched with the longitudinal beam in a hinged structure.

7. A bicycle foldable to form a two wheeled parallel stroller according to any of claims 1 to 3, wherein: strengthen the car roof beam including strengthening fixed beam and strengthening the walking beam, strengthen fixed beam and be located first car roof beam lower part, strengthen the fixed beam other end and be used for with strengthen the articulated cooperation of walking beam, strengthen the walking beam other end and be used for with the butt joint of second crossbeam to can dismantle fixed mounting with first crossbeam or second crossbeam.

8. A bicycle foldable to form a two wheeled parallel stroller according to claim 7, wherein: the rear vehicle part comprises a vehicle frame, the vehicle frame comprises a rear vehicle main beam and a butt-joint beam assembly, the butt-joint beam assembly is used for being matched with the folding vehicle beam part and the reinforcing vehicle beam, the butt-joint beam assembly comprises a first cross beam, a second cross beam and a longitudinal beam, the first cross beam is continuously arranged towards the front vehicle part in an extending mode, and the first cross beam and the reinforcing moving beam are overlapped in an up-and-down parallel mode along the vertical surface direction.

9. A bicycle foldable to form a two wheeled parallel stroller according to any of claims 1 to 6, wherein: the rear vehicle part comprises a seat, a frame and a rear wheel, the seat is located on the upper portion of the frame, the frame comprises a rear vehicle main beam, a butt-joint beam assembly and a rear vehicle fork, the butt-joint beam assembly and the rear vehicle fork are fixedly mounted with the rear vehicle main beam, the butt-joint beam assembly is used for being matched with the folding vehicle beam part, and the rear vehicle fork is used for being matched with the rear wheel.

10. A bicycle foldable to form a two wheeled parallel stroller according to claim 9, wherein: the butt joint beam assembly comprises a first cross beam, a second cross beam and a longitudinal beam, a third mounting seat is arranged at the butt joint of the first cross beam and the longitudinal beam, the third mounting seat is used for being installed in a matched mode with the second cross beam, a fourth mounting seat is arranged at the butt joint of the second cross beam and the longitudinal beam, and the fourth mounting seat is used for being installed in a matched mode with a reinforced vehicle beam.

11. A bicycle foldable to form a two wheeled parallel stroller according to claim 10, wherein: the first beam, the second beam and the first beam are mutually folded to form a U-shaped structure.

12. A bicycle foldable to form a two wheeled parallel stroller according to claim 11, wherein: the second mounting seat is detachably mounted and matched with the reinforced vehicle beam, the fourth mounting seat is hinged and matched with the reinforced vehicle beam, and the hinge structure of the fourth mounting seat and the reinforced vehicle beam is of a hinge structure capable of limiting and locking.

13. A bicycle foldable to form a two wheeled parallel stroller according to claim 11, wherein: the second mounting seat is in hinged fit with the reinforced vehicle beam, the hinge structure of the second mounting seat and the reinforced vehicle beam is of a hinge structure capable of limiting and locking, and the fourth mounting seat is in detachable fit with the reinforced vehicle beam.