CN213768860U

CN213768860U - Folding frame of electric bicycle

Info

Publication number: CN213768860U
Application number: CN202023053481.2U
Authority: CN
Inventors: 白胜山; 宋润贵; 梁国海
Original assignee: Foshan Kutu Intelligent Technology Co ltd
Current assignee: Foshan Kutu Intelligent Technology Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-23
Anticipated expiration: 2030-12-17

Abstract

The utility model relates to a bicycle technical field discloses an electric bicycle folding chassis, in order to improve electric bicycle folding chassis's nimble usability, one side of head pipe fitting is fixed with horizontal nest of tubes, horizontal nest of tubes passes through bolt and battery tube group connection, horizontal nest of tubes all forms a complete set with the inboard of battery tube group and is provided with movable bolt group, the inboard embedding block of installation axle has locking pad in the battery tube group, and one side of battery tube group is located bottom position department and is fixed with the back fork spare, the top of back fork spare is connected with pneumatic rod, damping spring has been cup jointed in pneumatic rod's the outside. The utility model discloses a supporting combination of horizontal nest of tubes and battery nest of tubes, under the grafting of activity cotter pin group is fixed, can convenient to use person carry out convenient folding receive and release work to electric folding bicycle, in the time of easy operation, have good support stability again, and then reduce staff's manipulation strength, improve folding frame's nimble usability.

Description

Folding frame of electric bicycle

Technical Field

The utility model relates to the technical field of bicycles, specifically an electric bicycle folding chassis.

Background

An electric bicycle is a mechatronic personal transportation tool which takes a storage battery as auxiliary energy and is provided with a motor, a controller, the storage battery, a rotating handle brake handle and other operation parts and a display instrument system on the basis of a common bicycle, along with the development of the times, the electric folding bicycle is widely applied gradually, two front wheels and two rear wheels are folded together by folding a frame, the length can be reduced by about 45 percent, the whole automobile can be put into a folding bag after being folded, and a trunk of the automobile, the folding bicycle does not need to use external tools in the folding process, can be folded and unfolded manually, can be stably erected after being folded by taking the seat rod as a supporting point, is convenient and comfortable to carry and use, has mature production process, the folding frame is used as a folding transfer shaft frame of the electric folding bicycle and is an important component of the electric folding bicycle.

But there are some shortcomings about electric bicycle's folding frame in the existing market, and traditional folding frame structure is comparatively single, and it is inconvenient to fold, and nimble operability is not enough, very easily increases user's manipulation strength. Accordingly, one skilled in the art provides a foldable frame for an electric bicycle to solve the above problems in the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric bicycle folding chassis to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a folding frame of an electric bicycle comprises a head pipe fitting, wherein a transverse pipe group is fixed on one side of the head pipe fitting, a battery pipe group is connected on one side of the transverse pipe group, the transverse pipe group is connected with the battery pipe group through a bolt, movable bolt groups are arranged on the inner sides of the transverse pipe group and the battery pipe group in a matched mode, a locking pad is embedded and clamped in the inner side of a mounting shaft in the battery pipe group, a rear fork member is fixed on one side of the battery pipe group at the bottom end position, an air pressure push rod is connected above the rear fork member, and a damping spring is sleeved on the outer side of the air pressure push rod;

the horizontal tube group comprises a horizontal tube, a connecting shaft is arranged on one side of the horizontal tube, and a positioning through hole A is formed in the position, located on the front side, of the upper surface of the connecting shaft in a penetrating mode.

As a further aspect of the present invention: the battery tube group comprises a battery tube bin, one side of the battery tube bin is located at the top end position and is fixed with a damping support, one side of the battery tube bin is located at the bottom end position and is fixed with a rear fork support, the front side of the battery tube bin is located at the bottom end position and is embedded into the battery tube bin, a five-way valve is arranged at the middle position of the other side of the battery tube bin, an installation shaft is arranged at the middle position of the other side of the battery tube bin, and the upper surface of the installation shaft is located at the front side position and is penetrated.

As a further aspect of the present invention: the inner side of the mounting shaft is embedded with a containing groove matched with the anti-loosening pad, and the anti-loosening pad is made of an NBR material component.

As a further aspect of the present invention: the internal diameter of installation axle and the external diameter looks adaptation of connecting axle, and installation axle and connecting axle are fixed through the movable bolt group grafting.

As a further aspect of the present invention: the movable bolt group comprises a bolt body, a movable pull ring is arranged at the top end of the bolt body, and tooth grains are arranged at the bottom end of the bolt body.

As a further aspect of the present invention: positioning hole A is the same with positioning hole B size, and positioning hole A all with the external diameter looks adaptation of the bolt body of rod with positioning hole B's internal diameter, positioning hole B's port is provided with the tooth of attacking identical with the insection.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a supporting combination of horizontal nest of tubes and battery nest of tubes, under the grafting of activity cotter pin group is fixed, can convenient to use person carry out convenient folding receive and release work to electric folding bicycle, in the time of easy operation, have good support stability again, and then reduce staff's manipulation strength, improve folding frame's nimble usability.

Drawings

FIG. 1 is a schematic structural view of a folding frame of an electric bicycle;

FIG. 2 is an exploded view of a folding frame of an electric bicycle;

FIG. 3 is a schematic folding and unfolding view of a foldable frame of an electric bicycle;

FIG. 4 is a schematic structural view of a cross tube set in a foldable frame of an electric bicycle;

FIG. 5 is a schematic structural diagram of a battery tube set in a foldable frame of an electric bicycle;

fig. 6 is a schematic structural diagram of a movable latch pin group in a folding frame of an electric bicycle.

In the figure: 1. a head pipe fitting; 2. a horizontal tube group; 21. a transverse tube; 22. a connecting shaft; 23. positioning the through hole A; 3. a battery tube group; 31. a battery tube bin; 32. a shock-absorbing support; 33. a rear fork support; 34. installing a shaft; 35. positioning the through hole B; 36. five-way connection; 4. a damping spring; 5. an air pressure push rod; 6. a rear fork; 7. a bolt; 8. a movable latch group; 81. a bolt rod body; 82. a movable pull ring; 83. a tooth pattern; 9. a locking pad.

Detailed Description

Referring to fig. 1 to 6, in an embodiment of the present invention, an electric bicycle folding frame includes a head pipe member 1, and is characterized in that a horizontal pipe assembly 2 is fixed to one side of the head pipe member 1, the horizontal pipe assembly 2 includes a horizontal pipe 21, a connecting shaft 22 is disposed on one side of the horizontal pipe 21, a positioning through hole a23 is formed in a position, located at a front side, of an upper surface of the connecting shaft 22, a battery pipe assembly 3 is connected to one side of the horizontal pipe assembly 2, the horizontal pipe assembly 2 is connected to the battery pipe assembly 3 through a plug 7, movable plug pin sets 8 are disposed on inner sides of the horizontal pipe assembly 2 and the battery pipe assembly 3, the battery pipe assembly 3 includes a battery pipe bin 31, a shock absorbing support 32 is fixed to a top position of one side of the battery pipe bin 31, a rear fork support 33 is fixed to a bottom position of one side of the battery pipe bin 31, a five-way 36 is embedded into a bottom position of the front side of the battery pipe bin 31, and an installation shaft 34 is disposed at a middle position of the other side of the battery pipe bin 31, the upper surface of the mounting shaft 34 is provided with a positioning through hole B35 at the front position in a penetrating manner, the positioning through hole A23 and the positioning through hole B35 are the same in size, the inner diameters of the positioning through hole A23 and the positioning through hole B35 are both matched with the outer diameter of the bolt rod body 81, the port of the positioning through hole B35 is provided with a tapping matched with the threading 83, in the folding and unfolding process of the folding frame, the movable cotter pin group 8 is inserted into the positioning through hole A23 and the positioning through hole B35, the frame can be positioned, further, when the folding frame is folded and unfolded, the movable cotter pin group 8 is pulled out from the positioning through hole, the folding frame can be folded and unfolded, the synchronous tapping passing through the port position of the positioning through hole B35 can be matched with the threading 83 on the movable cotter pin group 8, the movable cotter pin group 8 is positioned in a falling-off manner, and inconvenient storage and taking-off of the movable cotter pin group 8 are avoided, A loss situation occurs.

The inner diameter of the mounting shaft 34 is adapted to the outer diameter of the connecting shaft 22, and the mounting shaft 34 and the connecting shaft 22 are fixed by the movable latch pin group 8 in an inserting manner, the movable latch pin group 8 includes a latch rod body 81, a movable pull ring 82 is arranged at the top end of the latch rod body 81, and a tooth pattern 83 is arranged at the bottom end of the latch rod body 81, when the folding frame is folded and folded, a worker pulls the movable pull ring 82 to draw out the latch rod body 81 from the positioning through hole, release the locking state of the mounting shaft 34 and the connecting shaft 22, and further, under the transfer connection of the latch 7, the user rotates the transverse tube group 2 to enable the transverse tube group 2 to rotate to be attached to the battery tube group 3, and fold the folding frame, when the folding frame is unfolded, the user opens the transverse tube group 2 to enable the connecting shaft 22 to be clamped into the mounting shaft 34, and further reinsert the movable latch pin group 8 into the positioning through hole, the mounting shaft 34 and the connecting shaft 22 are locked, and the folding frame is subjected to stretching, opening and positioning processing.

The inboard embedding block of installation axle 34 has locking pad 9 in the battery nest of tubes 3, one side of battery nest of tubes 3 is located bottom position department and is fixed with back fork spare 6, the top of back fork spare 6 is connected with atmospheric pressure push rod 5, damping spring 4 has been cup jointed in the outside of atmospheric pressure push rod 5, the storage tank with locking pad 9 looks adaptation is seted up in the inboard embedding of installation axle 34, locking pad 9 adopts the NBR material component, in the folding chassis use, locking pad 9 through the NBR material supports the elastic pad of installation axle 34 with connecting axle 22, can reduce the hard frictional strength of installation axle 34 with connecting axle 22, and then the connecting part that avoids the friction to produce appears wearing and tearing, the not hard condition.

The utility model discloses a theory of operation is: when the folding frame is folded and unfolded, a worker pulls the movable pull ring 82 to draw the bolt rod body 81 out of the positioning through hole, the locking state of the mounting shaft 34 and the connecting shaft 22 is released, then under the transfer connection of the bolt 7, the user rotates the transverse pipe group 2 to enable the transverse pipe group 2 to rotate to be attached to the battery pipe group 3, the folding frame is folded and unfolded, the synchronous tapping at the position of the port of the positioning through hole B35 can be matched with the thread 83 on the movable inserting pin group 8, the movable inserting pin group 8 is subjected to anti-falling positioning treatment, the situation that the movable inserting pin group 8 is inconvenient to pull out and store and is lost is avoided, when the folding frame is unfolded, the user opens the transverse pipe group 2 to enable the connecting shaft 22 to be clamped into the mounting shaft 34, and further reinserts the movable inserting pin group 8 into the positioning through hole, the

mounting shafts

34 and 22 are in a locking state, the folding frame is stretched, opened and positioned, the elastic gaskets of the mounting shaft 34 and the connecting shaft 22 are further supported by the anti-loosening pad 9 made of the NBR material, the hard friction strength of the mounting shaft 34 and the connecting shaft 22 can be reduced, and the situation that the connecting part generated by friction is abraded and loosened is further avoided.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The folding frame of the electric bicycle comprises a head pipe fitting (1) and is characterized in that a transverse pipe group (2) is fixed on one side of the head pipe fitting (1), a battery pipe group (3) is connected to one side of the transverse pipe group (2), the transverse pipe group (2) is connected with the battery pipe group (3) through a bolt (7), movable bolt groups (8) are arranged on the inner sides of the transverse pipe group (2) and the battery pipe group (3) in a matched mode, a locking pad (9) is embedded and clamped in the inner side of a mounting shaft (34) in the battery pipe group (3), a rear fork member (6) is fixed on one side of the battery pipe group (3) at the bottom end position, an air pressure push rod (5) is connected above the rear fork member (6), and a damping spring (4) is sleeved on the outer side of the air pressure push rod (5);

the transverse pipe group (2) comprises a transverse pipe (21), a connecting shaft (22) is arranged on one side of the transverse pipe (21), and a positioning through hole A (23) is formed in the position, located on the front side, of the upper surface of the connecting shaft (22) in a penetrating mode.

2. The foldable frame of the electric bicycle as claimed in claim 1, wherein the battery tube set (3) comprises a battery tube bin (31), a damping support (32) is fixed at a top end position of one side of the battery tube bin (31), a rear fork support (33) is fixed at a bottom end position of one side of the battery tube bin (31), a five-way joint (36) is embedded at the bottom end position of the front side of the battery tube bin (31), an installation shaft (34) is arranged at a middle position of the other side of the battery tube bin (31), a positioning through hole B (35) is formed in a front position of the upper surface of the installation shaft (34), and the positioning through hole A (23) is the same as the positioning through hole B (35).

3. The foldable frame for electric bicycle as claimed in claim 2, wherein the mounting shaft (34) has a receiving groove fitted with the anti-loosening pad (9) and the anti-loosening pad (9) is made of NBR material.

4. The folding frame of the electric bicycle as claimed in claim 2, characterized in that the inner diameter of the mounting shaft (34) is matched with the outer diameter of the connecting shaft (22), and the mounting shaft (34) and the connecting shaft (22) are fixed by plugging through the movable plug pin set (8).

5. An electric bicycle folding frame as claimed in claim 1, characterized in that the movable latch group (8) comprises a latch rod body (81), the top end of the latch rod body (81) is provided with a movable pull ring (82), and the bottom end of the latch rod body (81) is provided with a tooth pattern (83).

6. The foldable frame of electric bicycle according to claim 5, wherein the outer diameter of the bolt rod body (81) is matched with the inner diameter of the positioning through hole A (23) and the positioning through hole B (35).

7. The folding frame of the electric bicycle as claimed in claim 2, characterized in that the end of the positioning through hole B (35) is provided with a tapping matched with the thread (83).