FOLDABLE SCOOTER

Abstract

The present invention relates to an electric scooter, and in particular to a foldable scooter. A foldable scooter is provided, comprising a front frame and a rear frame, wherein the front frame comprises a front fixation portion, and a first connecting frame and a second connecting frame which extend longitudinally; the front and rear ends of the first connecting frame are oppositely located above the front and rear ends of the second connecting frame; the rear frame comprises a rear fixation portion, and a third connecting frame and a fourth connecting frame which extend longitudinally; both the front end of the first connecting frame and the front end of the second connecting frame are fixed to the front fixation portion in a rotatable manner; the front end of the third connecting frame is fixed to the rear end of the first connecting frame in a rotatable manner, the third connecting frame deviating from its end is fixed to the rear end of the second connecting frame in a rotatable manner, and the rear end of the third connecting frame is connected to the rear fixation portion; and, the rear end of the fourth connecting frame is fixed to the third connecting frame or the rear fixation portion in a rotatable manner, while the rear end thereof is fixed to the first connecting frame in a rotatable manner. The present invention has the advantage that the folded scooter occupies less space and is more convenient for storage and transportation.

Claims

1. A foldable scooter, comprising a front frame and a rear frame, wherein the front frame comprises a front fixation portion, and a first connecting frame and a second connecting frame, both of which extending longitudinally; front and rear ends of the first connecting frame are oppositely located above front and rear ends of the second connecting frame; the rear frame comprises a rear fixation portion, and a third connecting frame and a fourth connecting frame, both of which extending longitudinally; both the front end of the first connecting frame and the front end of the second connecting frame are fixed to the front fixation portion in a rotatable manner; a front end of the third connecting frame is fixed to the rear end of the first connecting frame in a rotatable manner, the third connecting frame deviating from its end is fixed to the rear end of the second connecting frame in a rotatable manner, and a rear end of the third connecting frame is connected to the rear fixation portion; and, a rear end of the fourth connecting frame is fixed to the third connecting frame or the rear fixation portion in a rotatable manner, while the rear end thereof is fixed to the first connecting frame in a rotatable manner.

2. The foldable scooter according to claim 1, wherein the third connecting frame comprises two third connecting rods which are oppositely arranged left and right, respectively; the fourth connecting frame comprises two fourth connecting rods which are oppositely arranged left and right, respectively; the two fourth connecting rods are oppositely located between the two third connecting rods; the first connecting frame comprises two first connecting rods which are oppositely arranged; a transverse connecting rod is connected between the two first connecting rods; the front ends of the fourth connecting rods are fixed to the transverse connecting rod in a rotatable manner; the second connecting frame comprises two second connecting rods which are oppositely arranged left and right; and, the rear end of each of the second connecting rods is fixed to one of the third connecting rods in a rotatable manner.

3. The foldable scooter according to claim 1 or 2, wherein the first connecting frame is fixed to front ends of first locking hooks in a rotatable manner, horizontal shaft portions are provided at the rotatable joints of the third connecting frame with the second connecting frame, and the first locking hooks are hooked on the horizontal shaft portions.

4. The foldable scooter according to claim 3, wherein a lifting handle is connected at the first locking hooks; and, when the lifting handle is moved upward, the front frame and the rear frame are folded, and the first locking hooks are separated from the horizontal shaft portions.

5. The foldable scooter according to claim 3, wherein a front frame shell is provided at the front frame, a compression spring is provided on the inner side of the rear end of the front frame shell, and the first locking hooks have a tendency to turn over towards the horizontal shaft portions under the action of the compression spring.

6. The foldable scooter according to claim 1, wherein a second locking hook is arranged on the first connecting frame; the second locking hook deviating from its hook portion is fixed to the first connecting frame in a rotatable manner; a torsion spring is arranged between the second locking hook and the first connecting frame; a locking column is arranged on the fourth connecting frame; and, when the front frame and the rear frame are folded, the second locking hook is hooked on the locking column, and the second locking hook has a tendency to rotate towards the locking column under the action of the torsion spring.

7. The foldable scooter according to claim 1, wherein a foldable seat is arranged above the third connecting frame; the foldable seat comprises a seat plate; a fifth connecting rod and a sixth connecting rod which are obliquely arranged are connected between a rear end of the seat plate and the third connecting frame; both the fifth connecting rod and the sixth connecting rod extend forward from the top down; an upper end and a lower end of the fifth connecting rod are fixed to the third connecting frame and the seat plate in a rotatable manner, respectively; the lower end of the sixth connecting rod is fixed to the third connecting frame in a rotatable manner; an arc-shaped guide groove is formed at the rear end of the seat plate, the upper end of the sixth connecting rod is fitted in the arc-shaped guide groove in a sliding manner, and the center of the arc-shaped guide groove is located on a rotating axis of the upper end of the fifth connecting rod; a middle portion of the fifth connecting rod is fixed to an upper end of a seventh connecting rod in a rotatable manner; the third connecting frame comprises a connecting strut; and, a middle portion of the connecting strut is fixed to the third connecting frame in a rotatable manner, an upper end of the connecting strut is fixed to the lower end of the seventh connecting rod in a rotatable manner, and a lower end of the connecting strut is fixed to the fourth connecting frame in a rotatable manner.

8. The foldable scooter according to claim 7, wherein the fifth connecting rod has an inner cavity extending in its length direction, and the sixth connecting rod is located in the inner cavity.

9. The foldable scooter according to claim 7, wherein a first support connecting rod and a second support connecting rod are arranged between the seat plate and the fifth connecting rod; the lower end of the first support connecting rod is fixed to the fifth connecting rod in a rotatable manner; the upper end of the second support connecting rod is fixed to the seat plate in a rotatable manner; the lower end of the second support connecting rod is fixed to the upper end of the first support connecting rod in a rotatable manner; and, a limiting protrusion for supporting the second support connecting rod to limit the second support connecting rod from swinging downward about its lower end is provided at the upper end of the first support connecting rod.

10. The foldable scooter according to claim 1, wherein auxiliary wheel frames are arranged on a rear side of the rear fixation portion, and two auxiliary wheels spaced up and down are arranged at the rear ends of the auxiliary wheel frames.

11. The foldable scooter according to claim 2, wherein a second locking hook is arranged on the first connecting frame; the second locking hook deviating from its hook portion is fixed to the first connecting frame in a rotatable manner; a torsion spring is arranged between the second locking hook and the first connecting frame; a locking column is arranged on the fourth connecting frame; and, when the front frame and the rear frame are folded, the second locking hook is hooked on the locking column, and the second locking hook has a tendency to rotate towards the locking column under the action of the torsion spring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a schematic diagram of a first state of the present invention;

[0020] FIG. 2 is a schematic diagram of a second state of the present invention;

[0021] FIG. 3 is a schematic diagram of a folded state of the present invention; and

[0022] FIG. 4 is a sectional view of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0023] The present invention will be further described below by specific embodiments with reference to the accompanying drawings.

[0024] As shown in FIGS. 1-3, this embodiment discloses a foldable scooter, including a front frame and a rear frame. The front frame includes a front fixation portion 101, and a first connecting frame 1 and a second connecting frame 2 which extend longitudinally. The front and rear ends of the first connecting frame 1 are oppositely located above the front and rear ends of the second connecting frame 2. The rear frame includes a rear fixation portion 102, and a third connecting frame 3 and a fourth connecting frame 4 which extend longitudinally. Both the front end of the first connecting frame 1 and the front end of the second connecting frame 2 are fixed to the front fixation portion 101 in a rotatable manner, and form a first hinge joint 201 and a second hinge joint 202, respectively. The front end of the third connecting frame 3 is fixed to the rear end of the first connecting frame 1 in a rotatable manner and forms a hinge joint 203. The third connecting frame 3 deviating from its end is fixed to the rear end of the second connecting frame 2 in a rotatable manner and forms a fourth hinge joint 204. The rear end of the third connecting frame 3 is integrally connected to the rear fixation portion 102. The rear end of the fourth connecting frame 4 is fixed to the third connecting frame 3 in a rotatable manner and forms a fifth hinge joint 205, while the rear end thereof is fixed to the first connecting frame 1 in a rotatable manner and forms a sixth hinge joint. The front fixation portion 101 in this embodiment is a front wheel steering mechanism of a rudder stock 100 fixed with front wheels 103. The rear fixation portion 102 in this embodiment is a rear driving portion fixed with rear wheels 104 and a driving bridge. Two auxiliary wheel frames 105 extending backward are arranged on the frame body of the rear fixation portion 102, and the rear ends of the auxiliary wheel frames 105 are arranged vertically and provided with two auxiliary wheels 106 spaced up and down. The two auxiliary wheel frames 105 are spaced left and right. The rudder stock 100 in this embodiment is a telescopic rudder stock 100, and can adopt any telescopic lifting structure of the rudder stock 100 in the current market.

[0025] In this embodiment, the third connecting frame 3 includes third connecting rods 31 which are oppositely arranged left and right, and the fourth connecting frame 4 includes fourth connecting rods 41 which are oppositely arranged left and right. The two fourth connecting rods 41 are oppositely located between the two third connecting rods 31. The first connecting frame 1 includes two first connecting rods 11 which are oppositely arranged. A transverse connecting rod 12 is connected between the two first connecting rods 11. The front ends of the fourth connecting rods 41 are fixed to the transverse connecting rod 12 in a rotatable manner. The second connecting frame 2 includes two second connecting rods 21 which are oppositely arranged left and right. The rear end of each of the second connecting rods 21 is fixed to one of the third connecting rods 31 in a rotatable manner. The two fourth connecting rods 41 of the fourth connecting frame 4 forms a splayed structure, and the distance between the front ends of the two fourth connecting rods is less than the distance between the rear ends of the two fourth connecting rods 41. An extension section 121 extending backward and downward to connect the fourth connecting rods is provided on the transverse connecting rod 12. The two second connecting rods 12 also form a splayed structure, and the distance between the front ends of the two second connecting rods 21 is less than the distance between the rear ends of the two second connecting rods 21.

[0026] Front ends of first locking hooks 13 are fixed to the transverse connecting rod 12 in a rotatable manner, horizontal shaft portions 32 are provided at the rotatable joints of the third connecting frame 3 with the second connecting frame 2, and the first locking hooks 13 are hooked on the horizontal shaft portions 32. The two first locking hooks 13 are connected through a connecting rod 14, and a lifting handle 15 is fixed on the connecting rod 14 in a rotatable manner. When the lifting handle 15 is moved upward, the front frame and the rear frame are folded, and the first locking hooks 13 are separated from the horizontal shaft portions 32. A front frame shell (not shown) is provided at the front frame, and a compression spring 16 is provided on the inner side of the rear end of the front frame shell. The first locking hooks 13 have a tendency to turn over toward the horizontal shaft portions 32 under the action of the compression spring 16. In this embodiment, a positioning protrusion 17 for positioning the end of the compression spring 16 is arranged on the connecting rod 14. One end of the compression spring 16 is resisted against the front frame shell, while the other end thereof is sleeved outside the positioning protrusion 17 and resisted against the connecting rod 14.

[0027] A second locking hook 18 is arranged on the transverse connecting rod 12 of the first connecting frame 1. The second locking hook 18 deviating from its hook portion is fixed to the transverse connecting rod 12 in a rotatable manner. A torsion spring 19 is arranged between the second locking hook 18 and the transverse connecting rod 12. A locking column 42 extending transversely is arranged on the fourth connecting rods 41 of the fourth connecting frame 4. When the front frame and the rear frame are folded, the second locking hook 18 is hooked on the locking column 42, and the second locking hook 18 has a tendency to rotate towards the locking column 42 under the action of the torsion spring 19. In order to facilitate the unlocking of the second locking hook 18, an unlocking protrusion 181 extending transversely is arranged on the hook portion of the second locking hook 18.

[0028] As shown in FIGS. 2 and 4, a foldable seat is arranged above the third connecting frame 3. The foldable seat includes a seat plate 5. A fifth connecting rod 51 and a sixth connecting rod 52 which are obliquely arranged are connected between the rear end of the seat plate 5 and the third connecting frame 3. Both the fifth connecting rod 51 and the sixth connecting rod 52 extend forward from the top down. The upper and lower ends of the fifth connecting rod 51 are fixed to the third connecting frame 3 and the seat plate 5 in a rotatable manner, respectively. The lower end of the sixth connecting rod 52 is fixed to the third connecting frame 3 in a rotatable manner. An arc-shaped guide groove 50 is formed at the rear end of the seat plate 5, and a sliding protrusion (not shown) extending transversely is provided at the upper end of the sixth connecting rod 52. The sliding protrusion is always fitted in the arc-shaped guide groove 50 in a sliding manner, and the center of the arc-shaped guide groove 50 is located on a rotating axis 207 of the upper end of the fifth connecting rod 51. A middle portion of the fifth connecting rod 51 is fixed to an upper end of a seventh connecting rod 53 in a rotatable manner. The third connecting frame 3 includes a connecting strut 30. A middle portion of the connecting strut 30 is fixed to the third connecting rod 31 of the third connecting frame 3 in a rotatable manner, the upper end of the connecting strut 30 is fixed to the lower end of the seventh connecting rod 53 in a rotatable manner, and the lower end of the connecting strut 30 is fixed to the rear end of the fourth connecting rod 41 of the fourth connecting frame 4 in a rotatable manner. The fifth connecting rod 51 has an inner cavity extending in its length direction, and the sixth connecting rod 52 is located in the inner cavity of the fifth connecting rod.

[0029] A first support connecting rod 57 and a second support connecting rod 58 are arranged between the seat plate 5 and the fifth connecting rod 51. The lower end of the first support connecting rod 57 is fixed to the fifth connecting rod 51 in a rotatable manner. The upper end of the second support connecting rod 58 is fixed to the seat plate 5 in a rotatable manner. The lower end of the second support connecting rod 58 is fixed to the upper end of the first support connecting rod 57 in a rotatable manner, and a limiting protrusion 59 for supporting the second support connecting rod 38 to limit the second support connecting rod 58 from swinging downward about its lower end is provided at the upper end of the first support connecting rod 57.

[0030] When a user needs to fold the scooter of the present invention, the rudder stock is contracted and lifted down. Then, the user pulls the lifting handle upward to unlock the first locking hooks, and continuously pulls the lifting handle upward to fold the front frame and the rear frame, so that the front fixation portion (front wheels) of the front frame and (rear wheels of) the rear frame get close to each other, and the four auxiliary wheels of the folded scooter are supported on the ground. Subsequently, the second locking hook is pulled, so that the second locking hook is hooked on the locking column, thereby locking the folded state of the scooter and realizing folding. Finally, the user can pull the handle above the rudder stock to push the scooter of the present invention.

[0031] The present invention has the advantage that the folded scooter occupies less space and is more convenient for storage and transportation.