CN219884011U

CN219884011U - Swing arm type folding mechanism and scooter

Info

Publication number: CN219884011U
Application number: CN202321340620.0U
Authority: CN
Inventors: 李利锁; 蒋建国; 石崇阳
Original assignee: Yingfandi (beijing) Science And Technology Ltd
Current assignee: Yingfandi (beijing) Science And Technology Ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-10-24
Anticipated expiration: 2033-05-30

Abstract

The utility model provides a swing arm type folding mechanism and a scooter, relates to the technical field of folding devices, and solves the technical problem that in the prior art, safety hidden danger exists due to the fact that a cam is adopted to lock a vertical pipe and a front fork. The swing arm type folding mechanism and the scooter comprise a first seat body and a second seat body which are hinged, wherein a swing rod is hinged on the second seat body; the buckling assembly comprises a swing arm hinged on the second seat body, a buckling part arranged on the first end of the swing arm and a buckling part arranged on the first seat body, and the buckling part is matched with the buckling part; the second end of the swing arm is connected with the second end of the swing arm far away from the first seat body through a transmission structure, so that one of the swing arm and the swing arm can swing in the opposite direction to the one of the swing directions under the drive of the other of the swing arm and the swing arm. The swing arm type folding mechanism and the scooter are higher in safety and more stable in connection.

Description

Swing arm type folding mechanism and scooter

Technical Field

The utility model relates to the technical field of folding devices, in particular to a swing arm type folding mechanism and a scooter.

Background

Scooter generally comprises a transverse handle assembly (hereinafter referred to as a handle), a vertical pipe assembly (hereinafter referred to as a vertical pipe), a front fork assembly (hereinafter referred to as a front fork), a front wheel assembly, a frame (including a head pipe) assembly, a rear fork assembly and a rear wheel assembly, wherein the common setting positions of the folding mechanism are between the front fork and the vertical pipe and between the head pipe and the frame.

The folding mechanism arranged between the front fork and the vertical pipe in the market at present is generally realized by adopting a combination of a triangle structure and a cam, mainly applying the principle of triangle geometric stability (the front fork and the vertical pipe are connected through a shaft to form a triangle vertex A with a rotation center, the cam and the front fork are connected through a shaft to form a triangle vertex B with a rotation center, the cam and the vertical pipe are connected through a buckle to form a triangle vertex C with a opening point of the front fork and the vertical pipe, and the cam is used for compensating the manufacturing tolerance of parts. When the scooter stand pipe is in an open state (i.e. a state capable of riding), the folding mechanism is closed (mainly connecting the front fork and the stand pipe in a buckle mode), the cam is manually locked, and the stand pipe, the front fork and the folding mechanism form a triangular stable structure. When the scooter stand pipe is required to be switched to a folding state (namely a state capable of being stored or carried), the cam is manually unlocked, the folding mechanism is opened (the buckle is disengaged), and the stand pipe and the front fork are connected only through the rotating shaft.

The present inventors found that there are at least the following technical problems in the prior art:

1. when the riser is in an open state, the user sometimes forgets to manually lock the cam, resulting in the locking function being disabled. The stand pipe and the front fork have risks of shaking, disengaging, breaking and the like in the riding process, and if the stand pipe and the front fork are disengaged or broken, the situation of falling people can be caused.

2. Because the parts forming the folding mechanism are all made of steel, the cam is mainly used for compensating the gap generated after assembly caused by manufacturing errors, and finally locking is realized to avoid the problem of shaking in the riding process. The cam can generate tiny deformation to achieve interference fit under the locking state, and a certain external force is needed to lock the cam, otherwise, the cam cannot play a role in locking.

3. When the vertical pipe is in an open state, the vertical pipe is realized by means of buckling, end face lamination of the vertical pipe and a front fork and cam locking combination, and when the vertical pipe is used for a long time or is assembled for the first time on a product line, the tightness degree of the mechanism needs to be manually adjusted, so that the requirement on quality control of products is high.

Disclosure of Invention

The utility model aims to provide a swing arm type folding mechanism and a scooter, which aim to solve the technical problems that in the prior art, cam locking is adopted between a vertical pipe and a front fork, and potential safety hazards exist _。 The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the swing arm type folding mechanism provided by the utility model comprises:

the first seat body and the second seat body are hinged, and the second seat body is hinged with a swing rod;

the buckling assembly comprises a swing arm hinged to the second seat body, a buckling part arranged at the first end of the swing arm and a buckling part arranged on the first seat body, and the buckling part is matched with the buckling part;

the second end of the swing arm is connected with the second end of the swing arm far away from the first seat body through a transmission structure, so that one of the swing arm and the swing arm can swing in the direction opposite to the swinging direction of the other side under the driving of the other side.

As a further improvement of the utility model, a lock tongue structure is arranged on the first seat body, and the swing rod is matched with the lock tongue structure near the first end of the first seat body and is used for locking the swing rod in an unfolding state.

As a further improvement of the utility model, the buckling part is a buckling shaft arranged on the first end of the swing arm, the buckling part is a buckling groove arranged on the first seat body, and the buckling shaft is matched with the buckling groove.

As a further improvement of the utility model, the buckling groove is a U-shaped groove.

As a further improvement of the utility model, a first inclined surface structure is arranged on the first seat body, the first inclined surface structure is arranged on the moving path of the buckling shaft, the lower part of the first inclined surface structure faces to the inlet of the buckling groove, and the buckling shaft enters the buckling groove through the first inclined surface structure.

As a further improvement of the utility model, a second inclined surface structure is arranged on the first seat body, the second inclined surface structure is arranged at the inlet end of the buckling groove, and the buckling shaft is separated from the buckling groove through the second inclined surface structure.

As a further improvement of the utility model, the transmission structure comprises a clamping groove arranged on the swing rod and a clamping block arranged on the swing arm, and the size of the clamping block is smaller than that of the clamping groove.

As a further improvement of the utility model, a first torsion spring for propping the swing rod against the swing arm is arranged on the hinge shaft between the swing rod and the second seat body, and a second torsion spring for propping the swing arm against the swing rod is arranged on the hinge shaft between the swing arm and the second seat body.

As a further improvement of the utility model, a locking hole is arranged at the first end of the swing rod, the lock tongue structure comprises a lock tongue and a third torsion spring, the lock tongue is hinged on the first seat body, and the third torsion spring is arranged on a hinge shaft of the lock tongue and the first seat body and used for propping the lock tongue against the locking hole in an unfolding state.

A scooter comprises a scooter body and a swing arm type folding mechanism.

As a further improvement of the present utility model, the scooter body includes: the front wheel is connected to the front fork through a diagonal rod, the front fork is connected with the front end of the pedal, the rear fork is mounted at the rear end of the pedal, the rear wheel is connected to the rear fork in a rotating mode, one end of the vertical pipe is connected with the middle of the handlebar, and one end of the vertical pipe, which is far away from the handlebar, is connected with the front fork through a swing arm type folding mechanism.

The beneficial effects of the utility model are as follows: the swing arm type folding mechanism comprises a first seat body, a second seat body and a buckling assembly, wherein the first seat body is hinged, the second seat body is provided with a swing arm, the buckling assembly comprises a swing arm, a buckling part and a buckling part, the buckling part and the buckling part can be matched and connected, a transmission structure is arranged between the swing arm and the swing arm, so that one of the swing arm and the swing arm is driven by the other to swing in the direction opposite to the swing direction of the other, the swing arm and the swing arm are mutually restrained, the problem of automatic disconnection of the swing arm and the swing arm is avoided, and the driving safety is ensured; secondly, when the swing rod is driven to rotate, the swing rod can drive the swing arm to swing towards the opposite direction through the transmission structure, so that the separation of the buckling part and the buckling part can be realized only by rotating the swing rod, the stability of the first seat body and the second seat body after being connected is ensured, the problem that the first seat body is separated from the second seat body is avoided, and the driving safety is ensured. In addition, because the swing rod and the buckling component do not occupy the space in the first seat body and the second seat body, the wire harness can pass through the front fork and the vertical pipe, internal wiring is realized, and the attractiveness of the product is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a folded state diagram of the present utility model;

FIG. 3 is a split view of the present utility model;

FIG. 4 is a schematic view (one) of a part of the structure of the present utility model;

FIG. 5 is a schematic view of a portion of the structure of the present utility model (II);

fig. 6 is a cross-sectional view of the present utility model.

In the figure, 1, a first base; 2. a second seat body; 3. a locking assembly; 4. a buckling component; 5. a transmission structure; 11. a first ramp structure; 12. a second ramp structure; 31. swing rod; 32. a tongue structure; 33. a first torsion spring; 34. a locking hole; 35. a bolt; 36. a third torsion spring; 41. swing arms; 42. a buckling part; 43. a fastening part; 44. a second torsion spring; 51. a clamping groove; 52. and (5) clamping blocks.

Detailed Description

The following description of the utility model and the differences between the utility model and the prior art will be understood with reference to the accompanying figures 1-6 and the text. The following describes the utility model in further detail, including preferred embodiments, by way of the accompanying drawings and by way of examples of some alternative embodiments of the utility model. It should be noted that: any technical feature and any technical solution in this embodiment are one or several of various optional technical features or optional technical solutions, and in order to describe brevity, all of the optional technical features and the optional technical solutions of the present utility model cannot be exhausted in this document, and it is inconvenient for an implementation of each technical feature to emphasize that it is one of various optional implementations, so those skilled in the art should know: any one of the technical means provided by the utility model can be replaced or any two or more of the technical means or technical features provided by the utility model can be mutually combined to obtain a new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the protection scope of the present utility model, and the protection scope of the present utility model should include any alternative technical solution that can be conceived by a person skilled in the art without performing creative efforts, and a new technical solution obtained by combining any two or more technical means or technical features provided by the present utility model with each other by a person skilled in the art.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., refer to an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The swing arm type folding mechanism and the scooter are higher in safety and more stable in connection.

The technical scheme provided by the utility model is described in more detail below with reference to fig. 1 to 6.

The utility model provides a swing arm type folding mechanism, which comprises:

the first seat body and the second seat body are hinged so as to be capable of switching between a folded state and an unfolded state;

the locking assembly comprises a swing rod hinged to the second seat body and a lock tongue structure arranged on the first seat body, and a first end of the swing rod is matched with the lock tongue structure and used for locking the first seat body and the second seat body in an unfolding state;

the second end of the swing arm is connected with the second end of the swing arm through a transmission structure, so that one of the swing arm and the swing arm can swing in the direction opposite to the swinging direction of the other side under the driving of the other side.

The swing arm type folding mechanism comprises a first seat body, a second seat body and a buckling assembly, wherein the first seat body is hinged, the second seat body is provided with a swing arm, the buckling assembly comprises a swing arm, a buckling part and a buckling part, the buckling part and the buckling part can be matched and connected, a transmission structure is arranged between the swing arm and the swing arm, so that one of the swing arm and the swing arm is driven by the other to swing in the direction opposite to the swing direction of the other, the swing arm and the swing arm are mutually restrained, the problem of automatic disconnection of the swing arm and the swing arm is avoided, and the driving safety is ensured; secondly, when the swing rod is driven to rotate, the swing rod can drive the swing arm to swing towards the opposite direction through the transmission structure, so that the separation of the buckling part and the buckling part can be realized only by rotating the swing rod, the stability of the first seat body and the second seat body after being connected is ensured, the problem that the first seat body is separated from the second seat body is avoided, and the driving safety is ensured. In addition, because the swing rod and the buckling component do not occupy the space in the first seat body and the second seat body, the wire harness can pass through the front fork and the vertical pipe, internal wiring is realized, and the attractiveness of the product is improved.

It will be appreciated that the swing arm is driven to rotate on the first base, and can be driven to swing in the opposite direction of the swing arm through the transmission structure.

Or:

the swing arm is driven to rotate on the second seat body, and the swing rod can be driven to swing towards the opposite direction of the swing arm through the transmission structure.

Namely: when the first seat body and the second seat body are switched from a folding state to an unfolding state, the swing rod is driven to be matched with the lock tongue structure, so that the swing arm swings towards the side close to the swing rod, and the buckling part is abutted against the buckling part. The locking process is simple.

When the first seat body and the second seat body are switched from an unfolding state to a folding state, the swing rod is driven to be separated from the lock tongue structure, so that the swing arm swings to the side far away from the swing rod, and the buckling part is separated from the buckling part. The unlocking process is simple.

In the further improvement, a swing rod is arranged on the second seat body, a lock tongue structure is arranged on the first seat body, and the swing rod is matched with the lock tongue structure near the first end of the first seat body and is used for locking the swing rod in an unfolding state, so that the swing rod and the lock tongue structure can lock the first seat body and the second seat body in the unfolding state; the buckling assembly comprises a swing arm, a buckling part and a buckling part, the buckling part and the buckling part can be matched and connected, a transmission structure is arranged between the swing arm and the swing arm, so that one of the swing arm and the swing arm can swing in the direction opposite to the direction of one of the swing arms under the drive of the other of the swing arm and the swing arm, the swing arm and the swing arm are mutually restrained, the problem of automatic detachment of the swing arm and the swing arm is avoided, and the driving safety is ensured; secondly, when the driving pendulum rod with the locking tongue structure cooperatees the locking, the pendulum rod can drive through transmission structure the swing arm swings towards opposite direction, thereby makes buckling parts support tightly on buckling parts, ensures buckling parts and buckling parts closely laminating, thereby guarantees the stability after first pedestal and second pedestal are connected, can not appear rocking the problem, ensures that both connections can not become flexible.

In the further improvement, through the cooperation of lock joint axle and lock joint groove, realize the buckle connection of lock joint axle and lock joint groove, the lock joint groove is U type groove, and the contact surface of lock joint axle and lock joint groove is the arc surface, after pendulum rod and spring bolt structure cooperation are connected, make lock joint axle support tightly on the inner wall of lock joint groove to better assurance connection can not rock, improves driving safety. Meanwhile, the buckling groove is a U-shaped groove, when the lock is unlocked, the rotation of the buckling shaft is completely restrained by the buckling groove and can only be achieved through stirring the swing rod, the swing rod drives the swing arm to rotate so that the buckling shaft is separated from the buckling groove, the lock cannot be automatically unlocked and separated, and the locking and unlocking processes are simple.

In the further improvement, when the first seat body and the second seat body are switched from the folding state to the unfolding state, the buckling shaft moves to the buckling groove along the first inclined surface structure towards the buckling groove and is connected with the buckling groove in a matched mode, and the buckling shaft is matched with the buckling groove stably and firmly due to the fact that the buckling groove is a U-shaped groove, and cannot be separated. The whole unfolding and locking process does not need manual operation, only needs to rotate the handle bar, drives the second seat body to rotate corresponding to the first seat body, and the buckling shaft slides into the buckling groove along the first inclined surface structure to complete buckling connection of the buckling shaft and the buckling groove. And then the swing rod is driven to be matched with the lock tongue structure, so that the swing arm swings towards the side close to the swing rod, and the buckling part is abutted against the buckling part.

When the first seat body and the second seat body are switched from an unfolding state to a folding state, the swing rod is driven to be separated from the lock tongue structure, so that the swing arm swings to the side far away from the swing rod, the buckling shaft is separated from the buckling groove, and at the moment, the buckling shaft slides out of the buckling groove along the second inclined surface structure.

In the further improvement, through the cooperation of the clamping groove and the clamping block, the transmission connection between the swing rod and the swing arm is ensured, the size of the clamping block is smaller than that of the clamping groove, and a certain activity amount between the swing rod and the swing arm is ensured, so that the swing rod and the swing arm can swing relatively. The dimension difference between the clamping groove and the clamping block can meet the condition that the buckling shaft is separated from the buckling groove.

In this further improvement, through setting up first torsional spring and second torsional spring, first torsional spring is used for with the pendulum rod supports tightly on the swing arm, the second torsional spring is used for with the swing arm supports tightly on the pendulum rod to make pendulum rod and swing arm be in the state of supporting tightly each other, after the lock axle slides to the lock joint groove along first inclined plane structure, the elasticity of second torsional spring also can drive the lock axle and support tightly on the inner wall of lock joint groove.

In addition, the swing arm type folding mechanism provided by the utility model completes buckling connection by means of the matching of the buckling shaft and the buckling groove and is locked by the locking component, no accumulated machining error and assembly error occur, the second torsion spring drives the swing arm to abut against the direction of the swing rod, the buckling shaft and the buckling groove are always in a completely attached state, manual tightness adjustment is not needed, and the quality control difficulty is reduced.

In this further improvement, spring bolt mechanism includes spring bolt and third torsional spring, and the third torsional spring is used for the spring bolt provides elasticity to ensure the stable connection of spring bolt and pendulum rod, when the unblock, drive the spring bolt and remove, make spring bolt and locking hole separation, can accomplish the unblock.

A scooter comprises a scooter body and a swing arm type folding mechanism.

Example 1:

the swing arm type folding mechanism provided by the utility model comprises:

a first seat 1 and a second seat 2 hinged to each other so as to be able to switch between a folded state and an unfolded state;

the locking assembly 3 comprises a swing rod 31 hinged on the second seat body 2 and a lock tongue structure 32 arranged on the first seat body 1, and a first end of the swing rod 31 is matched with the lock tongue structure 32 and used for locking the first seat body 1 and the second seat body 2 in an unfolding state;

the buckling assembly 4 comprises a swing arm 41 hinged on the second seat body 2, a buckling part 42 arranged on the first end of the swing arm 41 and a buckling part 43 arranged on the first seat body 1, wherein the buckling part 42 is matched with the buckling part 43;

the second end of the swing arm 41 is connected with the second end of the swing rod 31 through a transmission structure 5, so that one of the swing rod 31 and the swing arm 41 can swing in the opposite direction to the one swing direction under the driving of the other.

It will be appreciated that the swing arm 31 is driven to rotate on the first base 1, and the swing arm 41 can be driven to swing in the opposite direction of the swing arm 31 by the transmission structure 5.

Or:

the swing arm 41 is driven to rotate on the second base 2, and the swing rod 31 can be driven to swing in the opposite direction of the swing arm 41 through the transmission structure 5.

Namely: when the first seat 1 and the second seat 2 are switched from the folded state to the unfolded state, the swing rod 31 is driven to be matched with the lock tongue structure 32, so that the swing arm 41 swings towards the side close to the swing rod 31, and the buckling part 42 abuts against the buckling part 43.

When the first and second housings 1 and 2 are switched from the unfolded state to the folded state, the swing arm 31 is driven to be separated from the latch structure 32, so that the swing arm 41 swings away from the swing arm 31, and the fastening portion 42 is separated from the fastening portion 43.

Further, the fastening portion 42 is a fastening shaft disposed on the first end of the swing arm 41, the fastening portion 43 is a fastening groove disposed on the first base 1, the fastening groove is a U-shaped groove, and the fastening shaft is matched with the fastening groove.

The first seat body 1 is provided with a first inclined plane structure 11, the first inclined plane structure 11 is arranged on the moving path of the buckling shaft, the lower part of the first inclined plane structure 11 faces to the inlet of the buckling groove, and the buckling shaft enters the buckling groove through the first inclined plane structure 11.

The first seat body 1 is provided with a second inclined plane structure 12, the second inclined plane structure 12 is arranged at the inlet end of the buckling groove, and the buckling shaft is separated from the buckling groove through the second inclined plane structure 12.

It can be understood that when the first seat 1 and the second seat 2 are switched from the folded state to the unfolded state, the buckling shaft moves along the first inclined plane structure towards the buckling groove to the buckling groove and is connected with the buckling groove in a matched manner, and the buckling shaft is stably and firmly matched with the buckling groove and cannot be separated from the buckling groove due to the fact that the buckling groove is a U-shaped groove; and then the swing rod 31 is driven to be matched with the lock tongue structure 32, so that the swing arm 41 swings towards the side close to the swing rod 31, and the buckling part 42 abuts against the buckling part 43.

When the first seat 1 and the second seat 2 are switched from the unfolded state to the folded state, the swing rod 31 is driven to be separated from the lock tongue structure 32, so that the swing arm 41 swings away from the swing rod 31, and the buckling shaft is separated from the buckling groove, and at the moment, the buckling shaft slides out of the buckling groove along the second inclined surface structure 12.

Further, the transmission structure 5 includes a clamping groove 51 provided on the swing arm 31 and a clamping block 52 provided on the swing arm 41, and the size of the clamping block 52 is smaller than that of the clamping groove 51.

Through the cooperation of draw-in groove 51 and fixture block 52, ensure to transmit between pendulum rod 31 and the swing arm 41 and be connected, the size of fixture block 52 is less than the size of draw-in groove 51, ensures that there is certain activity between pendulum rod 31 and the swing arm 41 to the relative swing between pendulum rod 31 and the swing arm 41.

Further, a first torsion spring 33 for abutting the swing arm 31 against the swing arm 41 is provided on the hinge shaft between the swing arm 31 and the second seat 2, and a second torsion spring 44 for abutting the swing arm 41 against the swing arm 31 is provided on the hinge shaft between the swing arm 41 and the second seat 2.

The first end of the swing rod 31 is provided with a locking hole 34, the lock tongue structure 32 comprises a lock tongue 35 and a third torsion spring 36, the lock tongue 35 is hinged on the first seat body 1, and the third torsion spring 36 is arranged on the hinge shaft of the lock tongue 35 and the first seat body 1 and is used for propping the lock tongue 35 against the locking hole 34 in an unfolding state.

The scooter comprises a scooter body and the swing arm type folding mechanism, wherein the swing arm type folding mechanism comprises: the front wheel is connected to the front fork through a diagonal rod, the front fork is connected with the front end of the pedal, the rear fork is mounted at the rear end of the pedal, the rear wheel is connected to the rear fork in a rotating mode, one end of the vertical pipe is connected with the middle of the handlebar, and one end of the vertical pipe, which is far away from the handlebar, is connected with the front fork through a swing arm type folding mechanism.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A swing arm folding mechanism, comprising:

2. The swing arm type folding mechanism according to claim 1, wherein the fastening portion is a fastening shaft disposed on the first end of the swing arm, the fastening portion is a fastening groove disposed on the first base, and the fastening shaft is matched with the fastening groove.

3. The swing arm type folding mechanism according to claim 2, wherein a first inclined surface structure is provided on the first base, the first inclined surface structure is provided on a moving path of the buckling shaft, a lower portion of the first inclined surface structure faces an inlet of the buckling groove, and the buckling shaft enters the buckling groove through the first inclined surface structure.

4. The swing arm type folding mechanism according to claim 2, wherein a second inclined surface structure is provided on the first base, the second inclined surface structure is provided at an inlet end of the fastening groove, and the fastening shaft is separated from the fastening groove through the second inclined surface structure.

5. The swing arm style folding mechanism of claim 2 wherein the snap-fit slot is a U-shaped slot.

6. The swing arm type folding mechanism according to any one of claims 1 to 5, wherein the transmission structure includes a clamping groove provided on the swing arm and a clamping block provided on the swing arm, and a size of the clamping block is smaller than a size of the clamping groove.

7. The swing arm type folding mechanism according to any one of claims 1 to 5, wherein a first torsion spring for abutting the swing arm against the swing arm is provided on a hinge shaft between the swing arm and the second seat, and a second torsion spring for abutting the swing arm against the swing arm is provided on a hinge shaft between the swing arm and the second seat.

8. The swing arm type folding mechanism according to any one of claims 1 to 5, wherein a latch structure is provided on the first base, and the swing lever is matched with the latch structure near a first end of the first base to lock the swing lever in an unfolded state.

9. The swing arm type folding mechanism according to claim 8, wherein the swing link first end is provided with a locking hole, the lock tongue structure includes a lock tongue and a third torsion spring, the lock tongue is hinged on the first base, and the third torsion spring is arranged on a hinge shaft of the lock tongue and the first base, so as to tightly support the lock tongue on the locking hole in an unfolded state.

10. A scooter comprising a scooter body and a swing arm type folding mechanism as claimed in any one of claims 1 to 9;

the scooter body includes: the front wheel is connected to the front fork through a diagonal rod, the front fork is connected with the front end of the pedal, the rear fork is mounted at the rear end of the pedal, the rear wheel is connected to the rear fork in a rotating mode, one end of the vertical pipe is connected with the middle of the handlebar, and one end of the vertical pipe, which is far away from the handlebar, is connected with the front fork through a swing arm type folding mechanism.