CN221585643U - Folding device of folding frame and assembly of folding device and front fork vertical tube - Google Patents

Abstract

A folding device of a folding frame and an assembly of the folding device and a front fork vertical pipe comprise a base component, a connecting component and a locking component, wherein the connecting component and the locking component are arranged on the base component. The base assembly comprises a first base and a second base which are pivoted with each other to enable the first base to pivot between an unfolding position and a folding position relative to the second base. The connecting assembly includes a handle operable to be pulled to secure the first base in the deployed position or to allow the first base to pivot. The locking assembly comprises a clamping pin capable of moving between a clamping position and a non-clamping position, the clamping pin located at the clamping position is used for fixing the first base at the unfolding position or the folding position, and the first base can pivot when the clamping pin is located at the non-clamping position. The folding device has simple structure, can be firmly fixed at the unfolding position and the folding position, and is safe and convenient to use.

Description

Folding device of folding frame and assembly of folding device and front fork vertical tube

Technical Field

The present utility model relates to a folding bicycle or scooter, and more particularly to a folding device for a folding bicycle or scooter, and an assembly of the folding device and a front fork vertical tube for the folding bicycle or scooter.

Background

The frame of a folding bicycle or scooter is generally provided with a folding device between a vertical tube and a front fork vertical tube, and the folding device mainly comprises a first component fixed on the vertical tube, a second component rotatably connected to the front fork vertical tube and fixedly connected with a front fork, and a connecting component for connecting the first component and the second component. The first member and the second member are pivotally connected to each other such that the first member is rotatable relative to the second member between an extended position and a collapsed position. The connection assembly typically includes a handle that can be fixedly secured against the first member when the first member is in the deployed position such that the first member is secured in the deployed position. The first member is coaxially engaged with the second member in the deployed position such that the riser stands above the front fork riser, and the frame assumes a riding condition. When the handle is pulled from a direction far away from the first component, the first component can pivot, and when the first component rotates from the unfolding position to the folding position, the first component downwards pivots relative to the second component, so that the vertical pipe is downwards folded to other parts of the frame, for example, the vertical pipe of the scooter and the handle at the top end of the vertical pipe are downwards folded to the pedal.

However, the aforementioned handles are easily pulled by the user carelessly, resulting in the user accidentally pivoting the first member, which is inconvenient or even dangerous. Even if the locking means is further provided at the handle to lock the handle, there is a considerable possibility that the locking means may be accidentally released and the handle may be simultaneously erroneously pulled. In addition, the first member cannot be fixed at the folding position by the folding device, so that a user can unfold the frame accidentally, inconvenience is caused, and even danger occurs. Therefore, the frame also needs to be provided with a fixing device, for example, a collar or a clamp is arranged on the pedal of the scooter, so that the first member can be fixed when the first member is positioned at the folding position, but the structure is complicated and the use is inconvenient.

Disclosure of utility model

In view of the above-mentioned drawbacks, a primary object of the present utility model is to provide a folding device for a folding bicycle frame, which has a simple structure and is capable of being stably fixed in an unfolded position and a folded position, and is safe and convenient to use.

In order to achieve the above objective, the folding device of the folding bicycle frame provided by the present utility model comprises a base assembly, a connecting assembly connected to the base assembly, and a locking assembly disposed on the base assembly. The base assembly comprises a first base and a second base, the first base comprises a first pivoting part, the second base comprises a second pivoting part, and the first pivoting part and the second pivoting part are pivoted mutually, so that the first base can pivot between an unfolding position and a folding position relative to the second base. The connecting assembly comprises a handle, when the first base is positioned at the unfolding position, the handle can be operated to be pulled to rotate relative to the base assembly between the clamping position and the releasing position, when the handle is positioned at the clamping position, the first base is fixed at the unfolding position, and when the handle is positioned at the releasing position, the first base can pivot relative to the second base. The locking assembly comprises a clamping pin which can move between a clamping position and a non-clamping position, the clamping pin is used for fixing the first base at the unfolding position when the first base is located at the unfolding position and the clamping pin is located at the clamping position, the clamping pin is used for fixing the first base at the folding position when the first base is located at the folding position and the clamping pin is located at the clamping position, and the first base can pivot relative to the second base when the clamping pin is located at the non-clamping position.

Therefore, the folding device provided by the utility model can be applied to folding bicycles, scooters and the like, so that the frame of the folding device can be in an unfolding state for riding when the first base is positioned at the unfolding position, and can be in a folding state convenient to store and carry when the first base is positioned at the folding position. Under the unfolding state, the first base is simultaneously fixed by the handle positioned at the clamping position and the clamping pin positioned at the clamping position, so that even if a user accidentally pulls the handle, the first base is still fixed by the clamping pin positioned at the clamping position and cannot be pivoted accidentally by the user, and the safety in use is improved. Moreover, the locking component is arranged on the base component instead of the handle, namely, the locking component is not used for locking the handle, but plays a fixing role with the handle at different positions of the first base at the same time, so that the fixing effect is stable, a user can be prevented from accidentally pushing the handle and the locking component at the same time to a great extent, and the use safety is further improved. When the frame is to be folded, a user only needs to move the clamping pin to the non-clamping position and rotate the handle to the release position, so that the first base can be pivoted to the folding position, and at the moment, the first base can be fixed at the folding position by only returning the clamping pin to the clamping position.

The utility model also provides an assembly of the folding device of the folding frame and the front fork vertical pipe, which comprises the folding device and the front fork vertical pipe. The second base of the folding device comprises a second base body, at least one upper bolt and at least one upper elastic piece, wherein the second base body comprises an upper connecting end face, a lower connecting end face and at least one upper bolt hole penetrating through the upper connecting end face and the lower connecting end face, the upper bolt and the upper elastic piece are arranged in the upper bolt hole, and the upper elastic piece pushes the upper bolt to the direction facing the upper connecting end face. The front fork standpipe includes body, at least one lower bolt and at least one lower elastic component, and the body includes top surface, bottom surface to and at least one from top surface towards the lower bolt hole of bottom surface extension, lower bolt and lower elastic component locate in the lower bolt hole and lower elastic component push away the lower bolt towards the direction that the top surface faced. When the first base of the folding device is positioned at the folding position, the upper plug pin of the second base is partially protruded out of the upper connecting end surface, and the lower plug pin of the front fork vertical tube is partially stretched into the upper plug pin hole of the second base. When the first base of the folding device is positioned at the unfolding position, the first base is pressed against the upper connecting end face and the upper bolt of the second base, the lower bolt of the front fork vertical tube is completely positioned outside the upper bolt hole of the second base, and the front fork vertical tube and the second base can rotate relatively.

Therefore, the front fork vertical tube is used for being fixed on a frame body of a bicycle, a scooter and the like, the first base of the folding device is used for being fixed on the vertical tube and fixedly connected with the handle, and the second base is used for being fixed on a front fork penetrating through the front fork vertical tube and connected with wheels. When the first base of the folding device is located at the unfolding position, namely, the frame is in a riding unfolding state, the first base and the second base are mutually fixed and can rotate together relative to the front fork vertical tube, and at the moment, the handle can control the wheels to rotate relative to the frame. When the first base of the folding device is positioned at the folding position, namely, the frame presents a folding state which is convenient to store and carry, the front fork vertical tube and the second base are positioned by the lower bolt and cannot rotate relatively, so that the front fork and the wheels can be prevented from rotating relative to the frame, the safety in the folding state is improved, and the problem caused by the fact that an exposed fixing device such as a lantern ring or a clamp is arranged on the frame, for example, a pedal of a scooter can be solved.

The detailed construction, features, assembly or use of the folding device of the folding chassis and the assembly thereof with the front fork standpipe provided by the utility model will be described in the detailed description of the embodiments that follow. However, those skilled in the art will appreciate that the detailed description and specific examples, while indicating the utility model, are given by way of illustration only and are not intended to limit the scope of the utility model as defined in the appended claims.

Drawings

FIG. 1 is a schematic view of a scooter with a folding device for a folding chassis according to a first preferred embodiment of the present utility model, showing the scooter in an unfolded state;

FIG. 2 is another schematic view of the scooter, showing the scooter in a collapsed state;

fig. 3 and 4 are a perspective combined view and a perspective exploded view of the folding device, respectively;

FIG. 5 is a perspective view of the first base of the folding device;

FIGS. 6 and 7 are another perspective combined view and another perspective exploded view, respectively, of the folding device;

fig. 8 to 13 are sectional views of the folding device, respectively showing different states of the folding device;

FIG. 14 is a perspective view of a folding device and a front fork standpipe of a folding frame according to a second preferred embodiment of the present utility model;

FIG. 15 is a cross-sectional view of the second base and the front fork riser of the folding device, showing the second base and the front fork riser in a collapsed position of the first base of the folding device;

FIG. 16 is a close-up view of the portion of FIG. 15 showing only the second base and the front fork standpipe in the first base in the deployed position;

FIG. 17 is a perspective view of a second base and a second hinge portion of the second base;

fig. 18 is a perspective view of the body of the front fork standpipe.

Reference numerals illustrate:

10, 10';

A base assembly;

A pivot 21;

22, front side;

23, rear side;

24, left side;

25, right side;

30, connecting an assembly;

31, a handle;

311, pulling the end;

312, pivoting end;

313, a pivoting part;

32, connecting rod;

321, a first end;

322 a second end;

33,34, 35;

40, locking assembly;

41, a bayonet lock;

42, elastic piece;

43, a clamping key;

431, pressing the block;

432, mounting posts;

50, a first base;

51, a first seat body;

511 an outer peripheral surface;

512, connecting end surfaces;

513, a containing groove;

514, opening;

515, inclined surface;

516, a pivoting part;

52, a first pivoting part;

521, perforating;

522, lower surface;

523, inner side;

524, outer side;

525, concave notch;

526, expanding the clamping groove;

527, folding the clamping groove;

53 top;

60, a second base;

61, a second seat body;

611 an outer peripheral surface;

612, connecting end surfaces;

613 grooves;

614 mounting holes;

615 a long slot;

616, a pivot portion;

617 an upper connecting end face;

618, lower connecting end face;

619 upper bayonet holes;

619a, a first section;

619b, a second section;

619c, a third section;

619d, a fourth section;

62 a second pivoting portion;

62a,62 b;

621, perforating;

63, bottom;

64, upper bolt;

641, upper end;

642, the lower end;

643, body;

65, upper elastic piece;

66, grooves;

661 slide-in side;

662 stop side;

663, inclined plane;

70, a scooter;

71, a vertical pipe;

72, 72';

721 a tube body;

722 top surface;

723, bottom surface;

724, lower bolt holes;

724a, a first section;

724b, a second section;

725, lower bolt;

725a, upper end;

725b, body;

726, lower elastic member;

73, front fork;

74 wheels;

75, a frame body;

76, a handle;

L is an imaginary central axis;

p1 is a unfolding position;

p2 is a folding position;

P3, clamping and supporting positions;

p4, a release position;

P5, clamping the position;

And P6, a non-clamping position.

Detailed Description

Referring to fig. 1 to 6, a folding device 10 for a folding bicycle frame according to a first preferred embodiment of the present utility model includes a base assembly 20, a connecting assembly 30, and a locking assembly 40.

As shown in fig. 3 and 4, the base assembly 20 includes a first base 50, a second base 60, and a pivot 21 for pivotally connecting the first base 50 and the second base 60 to each other. In detail, the first base 50 includes a first base 51 having a generally hollow cylindrical shape, and a first pivot portion 52 protruding from an outer peripheral surface 511 and a connecting end surface 512 (as shown in fig. 5) of the first base 51, wherein the first pivot portion 52 is provided with a through hole 521. The second base 60 includes a second base 61 having a generally hollow cylindrical shape, and a second pivot portion 62 protruding from an outer circumferential surface 611 and a connecting end surface 612 of the second base 61, wherein the second pivot portion 62 is provided with a through hole 621, and the second pivot portion 62 in the embodiment is formed by two blocks 62a and 62b, but only a single block may be provided. The pivot 21 is disposed through the through holes 521, 621 of the first and second pivoting portions 52, 62, so that the first base 50 can pivot between the extended position P1 (shown in fig. 1 and 8-9) and the collapsed position P2 (shown in fig. 2 and 12-13) relative to the second base 60. When the first base 50 is located at the deployed position P1, the connection end surface 512 of the first base 50 is connected to the connection end surface 612 of the second base 60, and the base assembly 20 is upright. When the first base 50 is located at the folding position P2, the connection end surface 512 of the first base 50 is separated from the connection end surface 612 of the second base 60, and the base assembly 20 is bent.

It should be noted that the folding device 10 can be applied to a folding frame of a folding scooter, a bicycle, etc., as shown in fig. 1 and 2, in this embodiment, the folding device 10 is applied to a scooter 70, a top 53 (shown in fig. 3) of the first base 50 is fixed to a vertical tube 71 of the scooter 70, a bottom 63 of the second base 60 is rotatably connected to a front fork vertical tube 72 of the scooter 70 and fixedly connected to a front fork 73 passing through the front fork vertical tube 72, the front fork 73 is connected to a wheel 74, and the front fork vertical tube 72 is fixed to a frame body 75. By the aforementioned pivoting of the first base 50 relative to the second base 60, the scooter 70 can be in an unfolded state (i.e. a riding state) as shown in fig. 1, or a folded state as shown in fig. 2. The base assembly 20 can define a front side 22 and a rear side 23 (as shown in fig. 1) facing opposite directions, the rear side 23 is configured to face the rider, the first pivot portion 52 and the second pivot portion 62 of the first and second bases 50 and 60 are located at the rear side 23, the locking assembly 40 is also located at the rear side 23, and the connecting assembly 30 is located at the front side 22.

As shown in fig. 5 and 8, the first pivot portion 52 of the first base 50 includes a lower surface 522 facing in the same direction as the connection end surface 512, an inner side surface 523 facing the virtual center axis L of the first seat 51, an outer side surface 524 opposite to the inner side surface 523, and a recess 525 between the lower surface 522 and the inner side surface 523. In addition, the first pivot portion 52 further includes an unfolding slot 526 disposed in the recess 525, and a folding slot 527 extending from the outer side surface 524 toward the inner side surface 523. The first seat 51 further includes a receiving groove 513 recessed from the outer peripheral surface 511 thereof along a direction parallel to the imaginary central axis L, the receiving groove 513 being located at the front side 22 of the base assembly 20, the receiving groove 513 having an opening 514 located at the connecting end face 512, and an inclined face 515 opposite to the opening 514. The first seat 51 further includes a pivot portion 516 disposed in the accommodating groove 513 and adjacent to the opening 514, and the pivot portion 516 in the embodiment is formed by two blocks, but only a single block may be provided.

As shown in fig. 4, the second base 61 of the second base 60 includes a groove 613 between the two blocks 62a and 62b of the second pivot portion 62, a mounting hole 614 extending from a bottom surface (facing the same direction as the connecting end surface 612) of the groove 613 toward the bottom 63 of the second base 60, and a long slot hole 615 provided on the outer peripheral surface 611 and communicating with the mounting hole 614. The second base 61 further includes a pivot portion 616 located on the front side 22 of the base member 20, and the pivot portion 616 in the embodiment is formed by two blocks, but only a single block is possible.

As shown in fig. 6 and 7, the connecting assembly 30 includes a handle 31, a link 32, and three pivots 33, 34, 35. The handle 31 includes a pulling end 311, a pivoting end 312, and a pivoting portion 313 between the pulling end 311 and the pivoting end 312, wherein the pivoting end 312 of the handle 31 is pivotally connected to the pivoting portion 616 of the second base 60 through a pivot 33. The first end 321 of the link 32 is pivotally connected to the pivot portion 516 of the first base 50 through the pivot 34, and the second end 322 of the link 32 is pivotally connected to the pivot portion 313 of the handle 31 through the pivot 35. Therefore, the first base 50, the second base 60, the handle 31 and the link 32 together form a four-bar linkage mechanism, which can generate the link motion as shown in fig. 9 to 13, and, when the first base 50 is located at the deployed position P1, the handle 31 can be pulled by a user to rotate between the clamping position P3 and the releasing position P4, and when the handle 31 is located at the clamping position P3, the handle 31 is embedded into the accommodating groove 513 of the first base 50 and is in a fixed state at the dead point position, so that the first base 50 is fixed at the deployed position P1, and the user has to apply force to pull the handle 31 to the releasing position P4 to generate the motion of the four-bar linkage mechanism, so that the first base 50 can pivot relative to the second base 60.

As shown in fig. 3 and 4, the locking assembly 40 includes a locking pin 41, an elastic member 42 and a locking key 43, wherein the elastic member 42 is a compression spring, the elastic member 42 and the locking pin 41 are sequentially disposed in the mounting hole 614 of the second base 60, and the locking pin 41 is pressed by the first pivot portion 52 of the first base 50, so that the elastic member 42 is disposed between the locking pin 41 and the second base 60 to push the locking pin 41 toward the locking position P5 (as shown in fig. 9 and 12). The locking key 43 includes a pressing block 431 and a mounting rod 432 fixed to the pressing block 431, wherein the mounting rod 432 passes through the long slot 615 of the second base 60 and is fixedly inserted into the locking pin 41, and the pressing block 431 is located on the outer circumferential surface 611 of the second base 60, so that a user can push the pressing block 431 of the locking key 43 to move the locking pin 41 from the locking position P5 to the non-locking position P6 (as shown in fig. 10 and 13).

As shown in fig. 8 and 9, when the first base 50 is located at the extended position P1, the extended slot 526 of the first pivot portion 52 of the first base 50 faces the latch 41, so that the latch 41 can be pushed to the locking position P5 by the elastic member 42 to extend into the extended slot 526, and further fix the first base 50 at the extended position P1. Therefore, in the state shown in fig. 8, the first base 50 is simultaneously fixed by the handle 31 at the clamping position P3 and the clamping pin 41 at the clamping position P5, so that even if the user accidentally pulls the handle 31, as shown in fig. 9, the first base 50 is still fixed by the clamping pin 41 at the clamping position P5, and cannot be accidentally pivoted by the user, and the user can be prevented from accidentally folding the frame, so that the safety in use can be improved. Moreover, the locking component 40 is disposed on the base component 20, but not on the handle 31, i.e. the locking component 40 is not used for locking the handle 31, but can play a fixing role with the handle 31 at different positions of the first base 50, so that the fixing effect is stable, and the user can be prevented from accidentally pushing the handle 31 and the locking component 40 at the same time to a great extent, thereby further improving the use safety. Even, as shown in the present embodiment, the handle 31 is located on the front side 22 of the base assembly 20, the locking assembly 40 is located on the rear side 23 of the base assembly 20, and the two parts are disposed at two opposite positions of the base assembly 20, so that the best fixing effect can be achieved, and the user can be prevented from accidentally pushing the handle 31 and the locking assembly 40 at the same time to the greatest extent.

When the frame is to be folded, as shown in fig. 10, the user only needs to push the latch 43 downwards by one hand to move the latch 41 to the non-locking position P6, and pull the handle 31 outwards by the other hand along the inclined surface 515 of the accommodating groove 513 of the first base 50 to start to pivot the first base 50. Then, the user can release the latch 43, and the latch 41 pushed by the elastic member 42 continuously abuts against the lower surface 522 of the first pivot portion 52 of the first base 50 during the pivoting of the first base 50 (i.e. the lower surface 522 of the first pivot portion 52 is slidably pressed against the top end of the latch 41 during the pivoting of the first base 50), as shown in fig. 11. When the first base 50 is pivoted to the folding position P2, as shown in fig. 12, the folding slot 527 of the first pivot portion 52 of the first base 50 faces the latch 41, so that the latch 41 can be pushed to the clamping position P5 by the elastic member 42 to extend into the folding slot 527, and further fix the first base 50 at the folding position P2. It should be noted that, the connection portion between the lower surface 522 and the outer side surface 524 of the first pivot portion 52 is designed as an arc-shaped guiding surface, and can be smoothly slidably abutted against the locking pin 41, so when the first base 50 is pivoted to the folding position P2, the locking pin 41 is pushed by the elastic member 42 to be automatically engaged in the folding slot 527, so that the first base 50 is fixed to the folding position P2, in other words, the operation of the whole folding frame is very smooth and easy, and the user can clearly know that the first base 50 is firmly fixed to the folding position P2 through the sound and/or vibration generated by the locking pin 41 automatically bouncing into the folding slot 527.

As is apparent from the above description, in the state shown in fig. 12, even if the user accidentally unfolds the frame, the first base 50 is fixed by the locking pin 41 at the locking position P5, and is not accidentally pivoted by the user, so that the frame can be firmly fixed in the folded state. When the vehicle frame is to be unfolded, the user only pushes the locking key 43 downward to move the locking pin 41 to the non-locking position P6, as shown in fig. 13, the first base 50 can be pivoted from the folded position P2 to the unfolded position P1, and the handle 31 can be rotated to the locking position P3 and inserted into the accommodating groove 513 of the first base 50, as shown in fig. 8, so that the vehicle frame can be stably fixed in the unfolded state.

The folding device 10 of the present utility model is quite convenient to use, and the same locking pin 41 can exert a stable fixing effect when the first base 50 is located at the unfolding position P1 and the folding position P2, so that the structure is quite simple. Furthermore, the handle 31 is inserted into the receiving groove 513 of the first base 50 when located at the blocking position P3, so that the handle 31 is prevented from being accidentally pulled, and the locking assembly 40 still fixes the first base 50 even if the handle 31 is accidentally pulled, so that the folding device 10 of the present utility model is quite safe to use.

It should be noted that, the locking assembly 40 in the present utility model is not limited to be disposed on the second base 60, and may be disposed on the base assembly 20 and may have a fixing effect when the first base 50 is disposed at the extended position P1 and the folded position P2. For example, the structural design of the first pivot portion 52 of the first base 50 in the present embodiment may be changed to the second pivot portion 62 of the second base 60, and the locking assembly 40 is disposed on the first base 50. On the other hand, the handle 31 of the connection assembly 30 is not limited to abutting against the first base 50 at the abutting position P3, nor is it limited to being fitted into the accommodating groove 513 of the first base 50. For example, the setting positions of the handle 31 and the connecting rod 32 can be interchanged, and the handle 31 can be abutted against the second base 60 when in the abutting position P3, in this form, the second base 60 can also be provided with a containing groove for embedding the handle 31, so as to achieve the effect of avoiding mistakenly pulling the handle 31.

Referring to fig. 14 to 18, a second preferred embodiment of the present utility model provides an assembly of a folding device 10 'and a front fork standpipe 72' of a folding bicycle frame, wherein the folding device 10 'and the front fork standpipe 72' are similar to the folding device 10 and the front fork standpipe 72, respectively, and achieve the same effects, except for the following differences.

In the present embodiment, the second base 61 of the second base 60 includes an upper connecting end face 617 (like the connecting end face 612 in the first preferred embodiment), a lower connecting end face 618, and two upper pin holes 619 penetrating the upper connecting end face 617 and the lower connecting end face 618. As shown in fig. 14 and 17, the upper latch hole 619 is adjacent to the left side 24 and the right side 25 of the base member 20, respectively. As shown in fig. 15 and 16, an upper plug 64 and an upper elastic member 65 are provided in each upper plug hole 619. Each upper plug pin hole 619 includes a first segment 619a, a second segment 619b, a third segment 619c, and a fourth segment 619d, wherein the first segment 619a, the second segment 619b, the third segment 619c, and the fourth segment 619d are sequentially connected from the upper connecting end surface 617 to the lower connecting end surface 618. Each upper plug 64 includes an upper end 641 disposed in the first segment 619a, a lower end 642 disposed in the fourth segment 619d, and a body 643 passing through the second segment 619b and the third segment 619 c. The upper elastic member 65 is sleeved on the body 643 of the upper latch 64, and two ends of the upper elastic member 65 are respectively abutted against the upper end 641 of the upper latch 64 and the junction of the second section 619b and the third section 619c of the upper latch hole 619. In this way, the upper elastic member 65 pushes the upper plug 64 against the upper connecting end face 617 in the facing direction.

The front fork standpipe 72' includes a tube 721, as shown in FIG. 18, the tube 721 includes a top surface 722, a bottom surface 723, and two lower pin holes 724 extending from the top surface 722 toward the bottom surface 723. As shown in fig. 15 and 16, a lower plug 725 and a lower elastic member 726 are disposed in each lower plug hole 724. Each lower plug pin hole 724 includes a first section 724a connected in sequence from the top surface 722 toward the bottom surface 723, and a second section 724b having a smaller aperture than the first section 724 a. Each lower plug 725 includes an upper end 725a disposed in the first section 724a and a body 725b disposed in the first section 724a and the second section 724b. The lower elastic member 726 is sleeved on the body 725b of the lower plug 725, and two ends of the lower elastic member 726 are respectively abutted against the upper end 725a of the lower plug 725 and the junction between the first section 724a and the second section 724b of the lower plug hole 724. In this way, the lower spring 726 pushes the lower latch 725 against the top surface 722.

The lower connecting end surface 618 of the second base 60 is connected to the top surface 722 of the front fork standpipe 72, and the lower latch holes 724 can be coaxially corresponding to the upper latch holes 619, respectively. When the first base 50 of the folding device 10' is located at the folding position P2, the upper end 641 of the upper latch 64 of the second base 60 is pushed by the upper elastic member 65 and partially protrudes from the upper connecting end 617, as shown in fig. 15, at this time, a partial space is left in the fourth section 619d of the upper latch hole 619, so that the upper end 725a of the lower latch 725 of the front fork standpipe 72' is pushed by the lower elastic member 726 and partially extends into the upper latch hole 619, and thus the front fork standpipe 72' and the second base 60 are positioned by the lower latch 725 and cannot rotate relatively. When the first base 50 of the folding device 10' is located at the unfolded position P1, the first base 50 presses against the upper connecting end face 617 of the second base 60 and the upper latch 64, so that the upper latch 64 moves downward to be located completely in the upper latch hole 619, as shown in fig. 16, and the upper latch 64 pushes the lower latch 725 of the front fork standpipe 72' downward, so that the lower latch 725 is located completely outside the upper latch hole 619 and completely inside the lower latch hole 724, and thus the front fork standpipe 72' and the second base 60 can rotate relatively.

As previously described and referring to fig. 1, the front fork standpipe 72' is configured to be secured to the frame body 75, the first base 50 of the folding device 10' is configured to be secured to the standpipe 71 and thereby fixedly coupled to the handle 76, and the second base 60 is configured to be secured to the front fork 73 extending through the front fork standpipe 72' and thereby coupled to the wheel 74. When the first base 50 of the folding device 10 'is in the unfolded position P1, i.e. the frame is in the unfolded state for riding, the first base 50 and the second base 60 are fixed to each other and can rotate together relative to the front fork stem 72', and the handle 76 can control the wheels 74 to rotate relative to the frame. When the first base 50 of the folding device 10 'is located at the folding position P2, that is, the frame presents a folding state that is convenient for storage and carrying, the front fork standpipe 72' and the second base 60 are positioned by the lower latch 725 and cannot rotate relatively, so that the front fork 73 and the wheels 74 can be prevented from rotating relative to the frame, and safety in the folding state is improved.

Furthermore, the second base 60 of the present embodiment further includes two grooves 66 disposed on the lower connecting end surface 618, as shown in fig. 17, the grooves 66 are respectively disposed between the upper latch hole 619 and the front side 22 of the base assembly 20, each groove 66 has a sliding side 661 engaged with the lower connecting end surface 618, a blocking side 662 opposite to the sliding side 661, and a slope 663 extending from the sliding side 661 to the blocking side 662, wherein the sliding side 661 is adjacent to the upper latch hole 619, and the blocking side 662 is further away from the upper latch hole 619. When the second base 60 is rotated toward the left side 24 relative to the front fork standpipe 72', the lower plug 725 on the left side 24 slides along the inclined surface 663 of the groove 66 on the left side 24 and is stopped by the stop side 662 of the groove 66 when slid a predetermined distance. Similarly, when the second base 60 is rotated toward the right side 25 relative to the fork standpipe 72', the lower plug 725 on the right side 25 slides along the inclined surface 663 of the groove 66 on the right side 25 and is stopped by the stop side 662 of the groove 66 when slid a predetermined distance. In other words, the groove 66 of the second base 60 in the present embodiment can limit the relative rotation between the second base 60 and the front fork standpipe 72' within a predetermined angle range, so as to improve the safety of riding, but the utility model is not limited thereto.

In addition, in the present embodiment, the two sets of upper pins, lower pins 64, 725 and their related structural features are used to position the front fork stem 72 'and the second base 60 in the folded state, so that the positioning effect of the configuration is good and the left and right sides are balanced, but the present utility model is not limited thereto, so long as there is at least one set of upper pins, lower pins 64, 725 and their related structural features (i.e. at least one set of upper pin holes, lower pin holes 619, 724, at least one set of upper elastic members, lower elastic members 65, 726 and at least one groove 66, etc.), and the positioning effect of the front fork stem 72' and the second base 60 in the folded state can be achieved.

Finally, it should be understood that the above-described embodiments of the present utility model are merely illustrative, and are not intended to limit the scope of the present utility model, and other equivalents and alternatives or variations thereof are also intended to be covered by the claims of the present utility model.

Claims (20)

1. A folding device for folding a vehicle frame, comprising:

The base assembly comprises a first base and a second base, wherein the first base comprises a first pivoting part, the second base comprises a second pivoting part, and the first pivoting part and the second pivoting part are mutually pivoted, so that the first base can pivot between an unfolding position and a folding position relative to the second base;

the connecting component is connected with the base component and comprises a handle, when the first base is positioned at the unfolding position, the handle can be operated to be pulled to rotate relative to the base component between a clamping position and a releasing position, when the handle is positioned at the clamping position, the first base is fixed at the unfolding position, and when the handle is positioned at the releasing position, the first base can pivot relative to the second base; and

The locking component is arranged on the base component and comprises a clamping pin capable of moving between a clamping position and a non-clamping position, the first base is positioned at the unfolding position, the clamping pin is used for fixing the first base at the unfolding position when the clamping pin is positioned at the clamping position, the first base is positioned at the folding position, the clamping pin is used for fixing the first base at the folding position when the clamping pin is positioned at the clamping position, and the first base can pivot relative to the second base when the clamping pin is positioned at the non-clamping position.

2. The folding apparatus of claim 1, wherein the base assembly defines a front side and a rear side facing in opposite directions, the handle is located at the front side, the first pivot portion of the first base and the second pivot portion of the second base are located at the rear side, and the locking assembly is also located at the rear side.

3. The folding device of claim 1 or 2, wherein the first pivot portion of the first base includes an unfolding slot and a folding slot, when the first base is located at the unfolding position, the unfolding slot faces the latch so that the latch located at the clamping position can extend into the unfolding slot, and when the first base is located at the folding position, the folding slot faces the latch so that the latch located at the clamping position can extend into the folding slot.

4. A folding device of a folding bicycle frame according to claim 3, wherein the first pivot portion comprises an inner side surface, an outer side surface opposite to the inner side surface, and a lower surface between the outer side surface and the inner side surface, the unfolding slot is located on the lower surface, and the folding slot is located on the outer side surface.

5. The folding device of claim 4, wherein the first pivot portion further comprises a recess between the lower surface and the inner side, and the expansion slot is located in the recess.

6. The folding apparatus of a folding chassis according to claim 4, wherein the first base comprises a first base body, the first base body comprises a connecting end surface, the first pivot portion protrudes from the connecting end surface of the first base body, the lower surface of the first pivot portion faces the same direction as the connecting end surface of the first base body, when the first base is located at the unfolded position, the connecting end surface is connected with the second base, and when the first base is located at the folded position, the connecting end surface is separated from the second base.

7. The folding device of the folding chassis according to claim 4, wherein the locking assembly further comprises an elastic member and a locking key, the elastic member and the locking pin are disposed in the mounting hole of the second base, the elastic member is configured to push the locking pin toward the locking position and between the locking pin and the second base, the locking key is connected to the locking pin, and the locking key is operable to move the locking pin from the locking position to the non-locking position.

8. The folding device of claim 7, wherein the second base comprises a second base body, the second base body comprises an outer peripheral surface, and a long slot hole arranged on the outer peripheral surface and communicated with the mounting hole, and the clamping key is arranged through the long slot hole.

9. The folding device of claim 8, wherein the second base includes a connecting end surface, the second pivot portion protrudes from the outer peripheral surface and the connecting end surface of the second base, the first base is connected to the connecting end surface of the second base when the first base is in the unfolded position, and the connecting end surface of the first base is separated from the connecting end surface of the second base when the first base is in the folded position.

10. The folding device of claim 8, wherein the first base comprises a first base body, the first base body comprises an outer circumferential surface, and a receiving groove recessed from the outer circumferential surface of the first base body, the connecting assembly further comprises a connecting rod, two ends of the connecting rod are respectively pivoted to the first base body and the handle, one end of the handle is pivoted to the second base body, and the handle is embedded into the receiving groove of the first base body when being positioned at the clamping position.

11. A folding device of a folding chassis according to claim 3, wherein the locking assembly further comprises an elastic member and a latch, the elastic member and the latch are disposed in the mounting hole of the second base, the elastic member pushes the latch toward the locking position and is disposed between the latch and the second base, the latch is connected to the latch, and the latch is operable to move the latch from the locking position to the non-locking position.

12. The folding device of claim 1 or 2, wherein the locking assembly further comprises an elastic member and a locking key, the elastic member pushes the locking pin to the locking position and is disposed between the locking pin and the base assembly, the locking key is connected to the locking pin, and the locking key is operable to move the locking pin from the locking position to the non-locking position.

13. The folding device of claim 1 or 2, wherein the base assembly comprises an outer peripheral surface and a receiving groove recessed from the outer peripheral surface, and the handle is inserted into the receiving groove when in the locking position.

14. The folding device of claim 13, wherein the receiving slot is formed in the first base, the connecting assembly further comprises a connecting rod, two ends of the connecting rod are respectively pivoted to the first base and the handle, and one end of the handle is pivoted to the second base.

15. An assembly of folding device and front fork standpipe of folding frame, characterized by contains:

The folding device of claim 1, wherein the second base of the folding device comprises a second base body, at least one upper plug pin and at least one upper elastic member, the second base body comprises an upper connecting end face, a lower connecting end face and at least one upper plug pin hole penetrating through the upper connecting end face and the lower connecting end face, the upper plug pin and the upper elastic member are arranged in the upper plug pin hole, and the upper plug pin is pushed against the upper connecting end face by the upper elastic member; and

The front fork vertical tube comprises a tube body, at least one lower plug pin and at least one lower elastic piece, wherein the tube body comprises a top surface, a bottom surface and at least one lower plug pin hole extending from the top surface towards the bottom surface, the lower plug pin and the lower elastic piece are arranged in the lower plug pin hole, and the lower elastic piece pushes the lower plug pin towards the direction facing the top surface;

When the first base of the folding device is positioned at the folding position, the upper plug pin of the second base partially protrudes out of the upper connecting end surface, and the lower plug pin of the front fork vertical tube partially stretches into the upper plug pin hole of the second base; when the first base of the folding device is positioned at the unfolding position, the first base is pressed against the upper connecting end face and the upper bolt of the second base, the lower bolt of the front fork vertical tube is completely positioned outside the upper bolt hole of the second base, and the front fork vertical tube and the second base can rotate relatively.

16. The folding device and front fork stack assembly of claim 15, wherein the second base of the folding device further comprises at least one channel disposed on the lower connecting end surface, and when the front fork stack and the second base rotate relative to each other, the lower pin of the front fork stack slides along the channel of the second base and is blocked by the blocking side of the channel.

17. The folding device and front fork stack assembly of claim 16 wherein the channel has a slide-in side engaging the lower connecting end surface and a ramp extending from the slide-in side to the stop side, the slide-in side being closer to the upper bayonet aperture than the stop side.

18. The folding apparatus and front fork stack assembly of claim 15, wherein the second base includes two upper pin holes, two upper pins disposed in each of the upper pin holes, and two upper elastic members disposed in each of the upper pin holes, and the front fork stack includes two lower pin holes, two lower pins disposed in each of the lower pin holes, and two lower elastic members disposed in each of the lower pin holes, and each of the lower pins extends partially into each of the upper pin holes when the first base is in the folded position.

19. The folding device and front fork stack assembly of claim 18 wherein the base assembly defines a front side and a rear side facing in opposite directions, the handle being located on the front side, the second base further comprising two grooves formed in the lower connecting end surface, the two grooves being located between each of the upper pin holes and the front side, each groove having a blocking side along which the lower pin slides and is blocked by the blocking side of the groove when the front fork stack and the second base are rotated relative to each other.

20. The folding device and front fork stack assembly of claim 19 wherein each of the channels has a slide-in side engaging the lower connecting end surface and a ramp extending from the slide-in side to the stop side, the slide-in side being closer to the upper pin aperture than the stop side.