CN213948673U - Six-connecting-rod longitudinal folding frame and inverted tricycle using same - Google Patents

Abstract

The utility model provides a six connecting rod vertically fold frame and use its tricycle that falls, include: the vertical pipe connecting rod comprises a short part and a long part, and the first end of the long part and the first end of the short part are integrally connected; the first end of the long part is provided with a first connecting part, and the second end of the long part is provided with a second connecting part and a third connecting part; the first end of the beam connecting rod is rotatably connected with the first connecting part; the first end of the locking connecting rod is rotatably connected with the middle part of the beam connecting rod; the first end of the shock absorber is rotatably connected with the second end of the beam connecting rod; the bottom fork connecting rod is of a quadrilateral frame structure, and a first end and a second end are arranged along the clockwise direction; the first end of the bottom fork connecting rod is rotatably connected with the second connecting part; the second end of the bottom fork connecting rod is rotatably connected with the second end of the shock absorber; a first end of the cushion connecting rod is rotationally connected with a second end of the locking connecting rod; the second end of the cushion connecting rod is rotatably connected with the third connecting part. This frame fold condition compact structure, spare part concentration is high, and the utilization ratio of folding back inner space is higher, portable and deposit.

Description

Six-connecting-rod longitudinal folding frame and inverted tricycle using same

Technical Field

The utility model relates to the technical field of bicycle, especially, relate to a six connecting rod vertically fold frame and use its tricycle that falls.

Background

With the progress of economic development and science and technology, the demand of people for beautiful life is increasingly strengthened, people now not only meet the requirement of daily transportation, but also pursue short-distance transportation tools with more individuality, more enjoyment and safer driving, can be conveniently carried and stored, can be placed in a trunk of an automobile, can be placed beside an office table, and can also be placed in a corner of a bedroom, so that people can conveniently take the short-distance transportation tools to go outdoor and freely. The folding bicycle is convenient to carry and comfortable to use, and can meet the above requirements of people, wherein the folding bicycle frame is the most basic and most critical structure of the bicycle, electricity is the framework and the main body of the bicycle, other components are directly or indirectly arranged on the folding bicycle frame and need to bear the pressure from each component, and therefore the folding bicycle frame has the characteristics of simplicity and convenience in operation and space saving while meeting the safety strength.

The horizontal fifty percent discount structure around traditional folding frame often adopts, on the ordinary manpower bicycle of being applied to of this kind of folding mode earlier, but along with electric bicycle's development, the drawback of this kind of folding mode reveals undoubtedly. The width of the frame after being folded is larger, the concentration density of parts is low, the utilization rate of the internal space after being folded is lower, the frame occupies larger three-dimensional space after being folded, and the integral folding effect is not good, so the folding frame is not suitable for the electric bicycle, and the durability of the electric bicycle is greatly reduced.

The folding frame is lack of a limiting system, the folding state of the whole bicycle is unstable and easy to loose and unfold, and the bicycle is inconvenient to store, carry or transport.

In addition, in order to be matched with the folding frame, the whole structure of the bicycle is designed to be compact, and a driver is in a contracted state in the riding process under the condition of sacrificing the size of the whole bicycle. Meanwhile, the existing folding electric bicycles are derived from common bicycles, most of the folding electric bicycles are provided with two wheels, the running safety is not as high as that of a tricycle, most of the folding electric bicycles are not provided with shock absorbers, and the control performance of the bicycles and the comfort of drivers are greatly reduced due to the defects of a plurality of existing designs, and the trafficability and the comfort of roads are poor.

In summary, the prior art has the following technical defects:

(1) the folding effect is poor, the folding mode is old, the occupied space is large, and the folded state is loose and inconvenient to carry and store;

(2) the man-machine effect is poor, and the controllability is poor;

(3) the comfort is poor, and the road is not suitable for bumpy road sections;

(4) the safety of the tricycle is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a six connecting rods of tricycle that falls vertically folding frame and folding, expansion method thereof has solved above part problem at least.

In order to achieve the above object, the utility model provides a six connecting rod vertical folding frame, include: the riser connecting rod, for L column structure, the riser connecting rod includes: a short portion; and a long portion, a first end of the long portion and a first end of the short portion being integrally connected; the first end of long portion is provided with first connecting portion, and the second end of long portion is provided with second connecting portion and third connecting portion.

The first end of the beam connecting rod is rotatably connected with the first connecting part through a rotating shaft.

And the first end of the locking connecting rod is rotatably connected with the middle part of the beam connecting rod through a rotating shaft.

And the first end of the shock absorber is rotatably connected with the second end of the beam connecting rod through a rotating shaft.

The bottom fork connecting rod is of a quadrilateral frame structure, and a first end and a second end of the bottom fork connecting rod are arranged along the clockwise direction; the first end of the bottom fork connecting rod is rotatably connected with the second connecting part through a rotating shaft; the second end of the bottom fork connecting rod is rotatably connected with the second end of the shock absorber through a rotating shaft.

The first end of the cushion connecting rod is rotatably connected with the second end of the locking connecting rod through a rotating shaft; the second end of the cushion connecting rod is rotatably connected with the third connecting part through a rotating shaft.

Above-mentioned folding chassis adopts the vertical beta structure of six connecting rods, compares with the horizontal fifty percent discount structure of front and back of tradition and has following advantage: the utility model discloses a frame is at folding in-process, the crossbeam connecting rod, the locking connecting rod, the cushion connecting rod, connect through rotating between bumper shock absorber and the chain stay connecting rod and draw close to the riser connecting rod for the riser connecting rod, the crossbeam connecting rod, the locking connecting rod, the laminating of cushion connecting rod is drawn close and is a style of calligraphy, the chain stay connecting rod is located the lower part of above-mentioned style of calligraphy structure, final overall structure's fold condition is down triangle-shaped, compact structure, spare part concentration is high, and the utilization ratio of folding back inner space is higher, portable and deposit.

Optionally, the riser link further comprises: and the hanging lug is connected with the second end of the short part of the stand pipe connecting rod.

The chain stay connecting rod still includes: and the second hook is arranged on one edge of the bottom fork connecting rod frame structure and is rotationally connected with the bottom fork connecting rod through a rotating shaft.

When the six-connecting-rod longitudinal folding frame is in a folding state, the hanging lug is connected with the second hook, and the vertical pipe connecting rod and the bottom fork connecting rod are fixedly locked.

Optionally, the crossbar link further comprises: the hanging ring is fixedly connected with the second end of the beam connecting rod;

the locking link still includes: the first hook is arranged at the second end of the locking connecting rod and is rotatably connected with the locking connecting rod through a rotating shaft;

when the six-connecting-rod longitudinal folding frame is in an unfolded state, the hanging ring is connected with the first hook, and the cross beam connecting rod is fixedly locked with the locking connecting rod.

Optionally, the riser link further comprises: the front fork connecting part is connected with the side wall of the first end of the vertical pipe connecting rod and is arranged on one side opposite to the long part; and the handle connecting part is arranged at the end part of the first end of the vertical pipe connecting rod.

Optionally, the crossbar link comprises: and the long strip-shaped groove starts from the middle part of the cross beam connecting rod and ends at the second end of the cross beam connecting rod.

In the process that the six-connecting-rod longitudinal folding frame is tightened from the unfolding state to the folding state, the locking connecting rod rotates around the middle part of the cross beam connecting rod from the second end of the cross beam connecting rod to the first end of the cross beam connecting rod and is embedded into the long strip-shaped groove.

In the process that the six-connecting-rod longitudinal folding frame is unfolded from a folding state to an unfolding state, the locking connecting rod rotates around the middle of the cross beam connecting rod from the first end of the cross beam connecting rod to the second end of the cross beam connecting rod and is embedded into the long strip-shaped groove.

The long strip-shaped groove is used for being embedded into and accommodating the locking connecting rod, mechanical limitation is formed, and the locking connecting rod can be prevented from excessively rotating when being far away from or close to the beam connecting rod, and interfering with other parts of the folding frame.

The assembly relation of the beam connecting rod and the locking connecting rod is more compact due to the long strip-shaped groove, so that the inner space of the folding frame is saved, a better folding or unfolding effect is achieved, and the stability of the frame in a riding and accommodating state is improved.

Optionally, the seat cushion link further comprises: the cushion connecting portion is arranged at the first end of the cushion connecting rod.

Alternatively, the shock absorber is a spring type shock absorber, a spring-air damper type shock absorber, a hydraulic damper type shock absorber, or an oil-gas combination type front fork shock absorber. The bumper shock absorber can reduce the bicycle and receive the impact force in the highway section of jolting, plays the effect that increases the personnel comfort of riding simultaneously.

Optionally, the bottom fork linkage further comprises:

the reinforcing rib is fixedly arranged in the middle of the bottom fork connecting rod, and the reinforcing rib and any two sides of the bottom fork connecting rod form a triangular structure; another aspect of the utility model provides a reverse tricycle who uses above-mentioned six connecting rod vertical folding frames, include:

two front wheels are provided;

the front fork is U-shaped, and two branches at one end of a U-shaped opening are respectively connected with the front wheel in a rotating manner through a rotating shaft; the front fork is connected with the front fork connecting part;

the handle is fixedly connected with the handle connecting part;

the cushion is fixedly connected with the cushion connecting rod;

the seat is fixedly connected with the middle part of the bottom fork connecting rod.

Optionally, the inverted tricycle further comprises:

the chain wheel is rotationally connected with one end of the reinforcing rib through a rotating shaft;

the crank is fixedly connected to the chain wheel, and the chain wheel is rotatably connected with one end, provided with the reinforcing rib, of the bottom fork connecting rod through a rotating shaft;

the rear wheel is rotationally connected with the third end of the bottom fork connecting rod through a rotating shaft; the third end of the bottom fork connecting rod is adjacent to the second end;

the chain is respectively meshed with the chain wheel and the rear wheel;

the mode of riding of the tricycle that falls is three point support, and the mode of riding of ordinary two-wheeled bicycle is two point support, so compare with ordinary two-wheeled bicycle, the utility model discloses a tricycle that falls has higher steering stability and the nature controlled, has further improved the security of riding.

Drawings

FIG. 1 is a schematic view of a six-bar linkage longitudinal folding frame in an unfolded state;

FIG. 2 is a schematic perspective view of a riser link of a six-link longitudinally foldable frame;

FIG. 3 is a schematic diagram of a six-bar linkage longitudinal folding frame connection;

FIG. 4 is a schematic view of a six-bar longitudinally foldable frame in a folded state;

FIG. 5 is an exploded view of a six-bar longitudinally foldable frame;

FIG. 6 is a schematic perspective view of a cross member link of the six-link longitudinally folding frame;

FIG. 7 is a perspective view of a locking link of the six-link longitudinally folding frame;

FIG. 8 is a schematic perspective view of a seat cushion link of a six-link longitudinally folding frame;

FIG. 9 is a schematic perspective view of a bottom fork link of the six-link longitudinally folding frame;

FIG. 10 is a schematic view of a folded inverted tricycle employing a six-bar longitudinally foldable frame;

FIG. 11 is a schematic view of the overall unfolded state of the inverted tricycle using the six-bar longitudinally foldable frame.

[ notation ] to show

1-a riser link;

11-hanging a lug;

12-a first connection;

13-a second connection;

14-a third connecting portion;

15-front fork connection;

16-a handle connection;

2-beam connecting rod;

21-hanging ring;

3-locking the connecting rod;

31-a first hook;

4-cushion link;

41-cushion connecting part;

5-a shock absorber;

6-bottom fork connecting rod;

61-reinforcing ribs;

62-a second hook;

63-a first end of a bottom fork linkage;

64-a second end of the bottom fork linkage;

65-a third end of the bottom fork connecting rod;

66-a fourth end of the bottom fork link;

67-first side;

68-a second edge;

69-third side;

610-fourth side;

7-a handle;

8-front fork;

9-front wheels;

10-cushion;

110-a seat;

120-crank;

130-a sprocket;

140-a chain;

150-rear wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity, and like reference numerals designate like elements throughout.

In order to achieve the above object, the present invention provides a six-bar longitudinal folding frame, as shown in fig. 1, including: a vertical pipe connecting rod 1, a beam connecting rod 2, a locking connecting rod 3, a cushion connecting rod 4, a shock absorber 5 and a fork connecting rod 6. Referring to fig. 2, the first end of the beam link 2 is rotatably connected to the first connecting portion 12 through a rotating shaft. The first end of the locking connecting rod 3 is rotatably connected with the middle part of the beam connecting rod 2 through a rotating shaft. The first end of the shock absorber 5 is rotatably connected with the second end of the beam connecting rod 2 through a rotating shaft. The first end of the cushion connecting rod 4 is rotationally connected with the second end of the locking connecting rod 3 through a rotating shaft; the second end of the seat cushion link 4 is rotatably connected to the third connecting portion 14 through a rotary shaft. The first end 63 of the bottom fork connecting rod is rotatably connected with the second connecting part 13 through a rotating shaft; the second end 64 of the bottom fork linkage is rotatably connected to the second end of the damper 5 via a pivot.

As shown in fig. 3, the foldable frame adopts a six-bar longitudinal folding structure, and has the following advantages compared with the traditional front-back transverse folding structure: in the folding process of the frame, the beam connecting rod 2, the locking connecting rod 3, the cushion connecting rod 4, the shock absorber 5 and the bottom fork connecting rod 6 are connected in a rotating mode and close to the vertical pipe connecting rod 1, so that the vertical pipe connecting rod 1, the beam connecting rod 2, the locking connecting rod 3 and the cushion connecting rod 4 are attached and close to form a straight line, the bottom fork connecting rod 6 is located at the lower portion of the straight line structure, finally, the folding state of the whole structure is inverted triangle, the structure is compact, the concentration of parts is high, the utilization rate of the inner space after folding is high, and the frame is convenient to carry and store.

The respective components of the six-link longitudinally foldable frame will be described in detail below.

As shown in fig. 2, the riser connecting rod 1 has an L-shaped structure, and the riser connecting rod 1 includes: a short portion and a long portion. As shown in fig. 2, the first end of the long portion is the left side in the drawing, the second end of the long portion is the right side in the drawing, the first end of the short portion is the upper side in the drawing, and the second end of the short portion is the lower side in the drawing. The first end of the long part and the first end of the short part are integrally connected to form an L-shaped structure; the first end of the long portion is provided with a first connection portion 12, the second end of the long portion is provided with a second connection portion 13 and a third connection portion 14, and as shown in fig. 2, the second connection portion 13 is disposed below the third connection portion 14.

Wherein, riser connecting rod 1 still includes: the front fork connecting part 15 is connected with the side wall of the first end of the stand pipe connecting rod 1, the front fork connecting part 15 is arranged on one side opposite to the long part, and the front fork connecting part 15 is used for being connected with a front fork 8 of the bicycle. A handle connecting portion 16 is provided at an end of the first end of the stem link 1, the handle connecting portion 16 being for connection with a handle 7 of the bicycle.

In the present embodiment, the bottom fork link 6 has a quadrilateral frame structure, and as shown in fig. 9, the four ends of the bottom fork link 6 are sequentially provided, in a clockwise direction, with the first end 63 of the bottom fork link as a reference, as a second end 64 of the bottom fork link, a third end 65 of the bottom fork link, and a fourth end 66 of the bottom fork link. Wherein a first side 67 is between the first end 63 and the second end 64, a second side 68 is between the second end 64 of the bottom fork link and the third end 65 of the bottom fork link, a third side 69 is between the third end 65 of the bottom fork link and the fourth end 66 of the bottom fork link, and a fourth side 610 is between the fourth end 66 of the bottom fork link and the first end 63 of the bottom fork link. One side of the frame structure of the bottom fork link 6, the third side 69 as shown in fig. 9, is provided with a second hook 62. The second end of the short portion of the corresponding riser link 1 is provided with a lug 11. When the six-connecting-rod longitudinal folding frame is in a folding state, the hanging lug 11 is connected with the second hook 62, and the vertical pipe connecting rod 1 and the bottom fork connecting rod 6 are fixedly locked.

As shown in fig. 6, the beam link 2 includes: the elongated groove starts at the middle of the beam link 2 and ends at the second end of the beam link 2.

In the process that the six-connecting-rod longitudinal folding frame is tightened from the unfolding state to the folding state, the locking connecting rod 3 rotates around the middle part of the cross beam connecting rod 2 from the second end of the cross beam connecting rod 2 to the first end of the cross beam connecting rod 2 and is embedded into the long strip-shaped groove.

In the process that the six-connecting-rod longitudinal folding frame is unfolded from a folding state to an unfolding state, the locking connecting rod 3 rotates around the middle of the cross beam connecting rod 2 from the first end of the cross beam connecting rod 2 to the second end of the cross beam connecting rod 2 and is embedded into the long strip-shaped groove.

The long strip-shaped groove is used for being embedded into the locking connecting rod 3 to form mechanical limitation, so that the locking connecting rod 3 can be prevented from rotating excessively when being far away from or close to the cross beam connecting rod 2, and the interference between the locking connecting rod and other parts of the folding frame can be avoided. The elongated groove enables the assembly relationship between the beam connecting rod 2 and the locking connecting rod 3 to be more compact.

The beam link 2 further includes: the hanging ring 21 is fixedly connected with the second end of the beam connecting rod 2.

As shown in fig. 7, the lock link 3 includes: the first hook 31 is arranged at the second end of the locking connecting rod 3, and the first hook 31 is rotatably connected with the locking connecting rod 3 through a rotating shaft;

when the six-bar longitudinal folding frame is in an unfolded state (as shown in fig. 10), the hanging ring 21 is connected with the first hook 31, and the cross beam connecting bar 2 and the locking connecting bar 3 are fixedly locked.

As shown in fig. 8, the seat cushion link 4 further includes: the cushion link 41 is provided at a first end of the cushion link 4.

In the present embodiment, the shock absorber 5 is selected from any one of a spring type shock absorber, a spring-air damping type shock absorber, a hydraulic damping type shock absorber, and an oil-air combined type front fork shock absorber, or a combination of a plurality of them. In this embodiment, the shock absorber 5 can reduce the impact force on the bicycle on the bumpy road, and simultaneously plays a role in increasing the comfort of the riding person, so that the shock absorbers capable of achieving the above effects, which can be known by those skilled in the art, are all applicable to the present application and are not listed here.

As shown in fig. 9, the bottom fork link 6 further includes: the reinforcing rib 61 is fixedly arranged in the middle of the bottom fork connecting rod, and any two sides of the reinforcing rib 61 and the bottom fork connecting rod 6 form a triangular structure;

the utility model discloses another embodiment provides an use foretell vertical folding tricycle of frame of six connecting rods, include: front wheel 9, front fork 8, handle 7, seat cushion 10, seat 110, sprocket 130, crank 120, rear wheel 150, chain 140.

The cushion 10 is fixedly connected with the cushion connecting rod 4. The seat 110 is fixedly connected with the middle part of the bottom fork connecting rod 6.

The front wheel 9, the front fork 8 and the handlebar 7 serve as a steering system of a reverse tricycle to which the above-described six-link longitudinally-folding frame is applied. Specifically, there are two front wheels 9. The front fork 8 is U-shaped, and two branches at one end of the U-shaped opening are respectively and rotatably connected with the front wheel 9 through a rotating shaft; the front fork 8 is connected to the front fork connecting portion 15. The handle 7 is fixedly connected with the handle connecting part 16.

The sprocket 130, the crank 120, the rear wheel 150 and the chain 140 serve as a steering system of the inverted tricycle to which the six-bar longitudinally-folding frame described above is applied. Specifically, the chain wheel 130 is rotatably connected with one end of the reinforcing rib 61 through a rotating shaft; the crank 120 is fixedly connected to the chain wheel 130, and the chain wheel 130 is rotatably connected with one end of the bottom fork connecting rod 6, which is provided with the reinforcing rib 61, through a rotating shaft; the rear wheel 150 is rotationally connected with the third end of the bottom fork connecting rod 6 through a rotating shaft; the third end of the bottom fork connecting rod 6 is adjacent to the second end; the chain 140 is engaged with the sprocket 130 and the rear wheel 150, respectively. The crank 120 serves as a power input mechanism for transmitting the pedaling force of the rider to the rear wheel 150 via the sprocket 130 and the chain 140.

The mode of riding of the tricycle that falls is three point support, and the mode of riding of ordinary two-wheeled bicycle is two point support, so compare with ordinary two-wheeled bicycle, the utility model discloses a tricycle that falls has higher steering stability and the nature controlled, has further improved the security of riding.

The inverted tricycle with the six-connecting-rod longitudinal folding frame is very convenient to fold, and comprises the following steps:

the method comprises the following steps: the first hook 31 of the locking connecting rod 3 is opened, so that the first hook 31 is separated from the hanging ring 21 of the cross beam connecting rod 2, the cushion 10 is driven by external force to enable the cushion connecting rod 4 to rotate towards the direction close to the vertical pipe connecting rod 1, the locking connecting rod 3 is driven to rotate towards the direction close to the cross beam connecting rod 2, and meanwhile, the bottom fork connecting rod 6 is driven to rotate towards the direction far away from the cushion connecting rod 4;

step two: when the locking connecting rod 3 is embedded into the strip-shaped groove of the cross beam connecting rod 2 and the cross beam connecting rod 2 is attached to the vertical pipe connecting rod 1; when the bottom fork connecting rod 6 rotates to be jointed with the vertical pipe connecting rod 1, the second hook 62 of the bottom fork connecting rod 6 is shifted, so that the second hook 62 is hooked on the hanging lug 11 of the vertical pipe connecting rod 1. The reverse tricycle is folded as shown in fig. 10. The unfolding steps of the inverted tricycle applying the six-connecting-rod longitudinal folding frame are as follows:

the method comprises the following steps: the second hook 62 of the bottom fork connecting rod 6 is pulled, so that the second hook 62 is separated from the hanging lug 11 of the vertical pipe connecting rod 1;

step two: the cushion 10 is driven by external force to enable the cushion connecting rod 4 to rotate towards the direction far away from the vertical pipe connecting rod 1, then the locking connecting rod 3 is driven to rotate towards the direction far away from the beam connecting rod 2, meanwhile, the bottom fork connecting rod 6 is driven to rotate towards the direction close to the cushion connecting rod 4 until the inverted tricycle six-connecting-rod longitudinal folding frame is completely unfolded, the first hook 31 of the locking connecting rod 3 is hung on the hanging ring 21, and the unfolding and locking of the inverted tricycle six-connecting-rod longitudinal folding frame are completed. The unfolded state of the inverted tricycle is shown in fig. 11. The folding and unfolding processes of the six-connecting-rod longitudinal folding frame of the inverted tricycle are simple and convenient to operate, have the locking and fixing functions, enable riders to carry conveniently, and guarantee riding safety of the riders.

It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", "middle", etc., used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present invention. Throughout the drawings, like elements are represented by like or similar reference numerals. In the event of possible confusion for understanding of the present invention, the conventional structure or configuration will be omitted, and the shapes and sizes of the respective components in the drawings do not reflect the actual sizes and proportions, but merely illustrate the contents of the embodiments of the present invention.

The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.

In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A six-bar longitudinal folding frame, comprising:

a riser link of an L-shaped configuration, the riser link comprising:

a short portion; and

a long portion having a first end integrally connected to a first end of the short portion; the first end of the long part is provided with a first connecting part, and the second end of the long part is provided with a second connecting part and a third connecting part;

the first end of the beam connecting rod is rotatably connected with the first connecting part through a rotating shaft;

the first end of the locking connecting rod is rotatably connected with the middle part of the beam connecting rod through a rotating shaft;

the first end of the shock absorber is rotatably connected with the second end of the beam connecting rod through a rotating shaft;

the bottom fork connecting rod is of a quadrilateral frame structure, and a first end and a second end of the bottom fork connecting rod are arranged along the clockwise direction; the first end of the bottom fork connecting rod is rotatably connected with the second connecting part through a rotating shaft; the second end of the bottom fork connecting rod is rotatably connected with the second end of the shock absorber through a rotating shaft;

the first end of the cushion connecting rod is rotatably connected with the second end of the locking connecting rod through a rotating shaft; the second end of the cushion connecting rod is rotatably connected with the third connecting part through a rotating shaft.

2. The six-bar longitudinally folding frame of claim 1,

the riser link further comprises: a suspension loop connected to a second end of the short portion of the riser link;

the bottom fork connecting rod further comprises: the second hook is arranged on one edge of the bottom fork connecting rod frame structure and is rotationally connected with the bottom fork connecting rod through a rotating shaft;

when the six-connecting-rod longitudinal folding frame is in a folding state, the hanging lug is connected with the second hook, and the vertical pipe connecting rod and the bottom fork connecting rod are fixedly locked.

3. The six-bar longitudinally folding frame of claim 1,

the beam link further includes: the suspension ring is fixedly connected with the second end of the beam connecting rod;

the locking link further includes: the first hook is arranged at the second end of the locking connecting rod and is rotationally connected with the locking connecting rod through a rotating shaft;

when the six-connecting-rod longitudinal folding frame is in an unfolded state, the hanging ring is connected with the first hook, and the cross beam connecting rod is fixedly locked with the locking connecting rod.

4. The six-bar longitudinally folding frame of claim 1 wherein said riser link further comprises:

the front fork connecting part is connected with the side wall of the first end of the vertical pipe connecting rod and is connected with one side opposite to the long part;

and the handle connecting part is connected with the end part of the first end of the vertical pipe connecting rod.

5. The six-bar longitudinally folding frame of claim 1 wherein said cross-member linkage comprises:

the long strip-shaped groove starts from the middle part of the cross beam connecting rod and ends at the second end of the cross beam connecting rod;

in the process that the six-connecting-rod longitudinal folding frame is tightened from the unfolded state to the folded state, the locking connecting rod rotates around the middle part of the cross beam connecting rod from the second end of the cross beam connecting rod to the first end of the cross beam connecting rod and is embedded into the long strip-shaped groove;

the six-connecting-rod longitudinal folding frame is opened to the in-process of unfolding the state by fold condition, the locking connecting rod winds the middle part of the cross beam connecting rod is rotated to the second end of the cross beam connecting rod from the first end of the cross beam connecting rod and is embedded into the strip-shaped groove.

6. The six-bar longitudinally folding frame of claim 1 wherein said cushion link further comprises:

a cushion connecting portion connected to the first end of the cushion link.

7. The six-bar longitudinally folding frame of claim 1, wherein said shock absorber is a spring shock absorber, a spring-air damper shock absorber, a hydraulic damper shock absorber, or an oil-gas combination front fork shock absorber.

8. The six-bar longitudinally folding frame of claim 1 wherein said bottom fork linkage further comprises:

and the reinforcing rib is fixedly arranged in the middle of the bottom fork connecting rod, and any two sides of the reinforcing rib and the bottom fork connecting rod form a triangular structure.

9. A reverse tricycle employing a six-bar longitudinally foldable frame as claimed in any one of claims 1 to 8, comprising:

the number of the front wheels is two;

the front fork is U-shaped, and two branches at one end of the U-shaped opening are respectively connected with the front wheel in a rotating manner through a rotating shaft; the front fork is connected with a front fork connecting part of the vertical pipe connecting rod;

the handle is fixedly connected with the handle connecting part of the vertical pipe connecting rod;

the cushion is fixedly connected with the cushion connecting rod;

and the seat is fixedly connected with the middle part of the bottom fork connecting rod.

10. The inverted tricycle of claim 9, further comprising:

the chain wheel is rotationally connected with one end of the reinforcing rib through a rotating shaft;

the crank is fixedly connected to the chain wheel, and the chain wheel is rotatably connected with one end, provided with a reinforcing rib, of the bottom fork connecting rod through a rotating shaft;

the rear wheel is rotatably connected with the third end of the bottom fork connecting rod through a rotating shaft; the third end of the bottom fork link is adjacent to a second end of the bottom fork link;

and the chain is respectively meshed and connected with the chain wheel and the rear wheel.

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