CN220410797U - Hook type folding mechanism and electric scooter - Google Patents

Abstract

The utility model provides a hook type folding mechanism and an electric scooter, which relate to the technical field of electric scooters and aim to solve the problem that a cam type folding mechanism in the prior art is complex and laborious to operate during locking. The hook type folding mechanism disclosed by the utility model realizes automatic buckling and locking of the vertical pipe and the head pipe, does not need to manually operate the swing rod in the whole process, and is simple and labor-saving to operate.

Description

Hook type folding mechanism and electric scooter

Technical Field

The utility model relates to the technical field of electric scooters, in particular to a hook type folding mechanism and an electric scooter.

Background

The electric scooter occupies small space, can freely shuttle in all big and small corners of a city, has lower cost than an automobile, is lighter and faster than a bicycle, and can adapt to complex terrains of the city, so that the electric scooter becomes popular traffic selection among low and medium income people in the city.

In order to reduce the space of the electric scooter and facilitate the storage or the carrying of the electric scooter, a folding mechanism is arranged on the electric scooter in recent years to facilitate the folding of the electric scooter. As shown in fig. 1, the electric scooter generally comprises a handlebar assembly 14, a vertical tube assembly (hereinafter referred to as a "vertical tube"), a front fork assembly (hereinafter referred to as a "front fork"), a front wheel assembly 16, a frame (including a head tube) assembly 17, a rear fork assembly 18 and a rear wheel assembly 19, and the folding mechanism is generally arranged between the vertical tube and the head tube and between the head tube and the frame.

A relatively large number of folding mechanisms in use on the market are generally implemented using cam structures: as shown in fig. 2 and 3, the cam structure 11 mainly comprises a cam base 121, a cam swing rod 112, a slide buckle assembly (a buckle 111, a buckle 114, a compression spring 113, a screw), a buckle 115, a jackscrew 117, a cam shaft 116, a screw, a cam torsion spring 118, a buckle hook 119, a cam footstock 120, a rotation shaft 122, and the like, wherein: the cam base 121 and the cam top 120 are connected through a rotation shaft 122 to form a rotatable structure; the cam base 121 is arranged above the head pipe 13 and is connected with the front fork pipe 15 in a clasping manner; the slide fastener component is arranged at the upper end of the cam swing rod 112 (the buckle 111 and the buckle 114 are respectively arranged at two sides of the cam swing rod 112, the pressure spring 113 is arranged in a cavity formed by the buckle 111 and the cam swing rod 112, and then the buckle 114 and the buckle 111 are locked by a screw); cam swing rod 112, hasp 115 and cam torsion spring 118 are fixed on cam base 121 through cam shaft 116; the snap hook 119 is disposed on the cam top base 120 (generally fixed by a screw or integrally formed with the cam top base 120); the cam top 120 is screwed or welded to the riser 12. When the scooter stand pipe 12 is in an open state (i.e. a riding state), the hasp 115 can be automatically buckled with the hasp hook 119 under the action of a cam torsion spring, then the cam swing rod 112 is pushed to the stand pipe 12 direction to enable a sliding buckle component of the cam swing rod to be buckled with the hasp 115 or the stand pipe 12, in the process, the cam shaft 116 is driven by the cam swing rod 112 to rotate to enable the eccentric shaft 1161 to be turned away from the hasp hook 119, so that the eccentric shaft 1161 drives the hasp 115 to slide downwards along the axis direction of the stand pipe to be buckled with the hasp hook 119, and at the moment, the folding mechanism is completely locked. When the scooter stand pipe 12 is required to be switched to a folding state (namely a state capable of being stored or carried), the manual buckle sliding buckle assembly is separated from the buckle 115 or the stand pipe, then the cam swing rod 112 is pulled to be far away from the stand pipe 12, the cam shaft 116 is driven by the cam swing rod 112 to rotate, so that the eccentric shaft 1161 rotates to enable the eccentric shaft 1161 to be turned to one side of the buckle hook 119, the eccentric shaft 1161 drives the buckle 115 to slide upwards along the axis of the stand pipe to be separated from the buckle hook 119, when the cam swing rod 112 is continuously rotated, the buckle 115 is driven to rotate around the cam shaft 116 to be far away from the stand pipe 12, so that the buckle 115 is completely separated from the buckle 115, at the moment, the folding mechanism is completely unlocked, and the stand pipe can be folded to a set position.

However, the existing folding mechanism has the following defects: 1. folding locking or unlocking operations are laborious. The parts forming the folding mechanism in the prior art are mostly metal parts, and the cam structure is mainly used for making up gaps generated after assembly caused by manufacturing errors, and finally locking is realized to avoid the problem of shaking in the riding process. The cam structure can generate tiny deformation to achieve interference fit under the locking state, so that the cam structure can be locked by a certain external force, and otherwise, the cam structure cannot play a role in locking. 2. The structure is complex, the assembly is difficult, and the cost is high. The folding mechanism of the prior art solution described above consists of 13 parts (all screw specifications are counted by one part). The assembly process is more and difficult, especially cam swing rod, hasp, cam torsion spring are fixed to the cam base through the cam shaft, firstly, the cam shaft needs to pass through a plurality of parts and simultaneously the direction is guaranteed; secondly, in the shaft penetrating process, holes of a plurality of parts are difficult to align and penetrate the shaft due to the stress of the cam torsion spring. In addition, because the cam base, the cam swing rod, the buckle hook and the cam top seat have the characteristics of appearance pieces, stress pieces and functional pieces, the process needs to adopt a casting process with relatively high cost, so that the total cost for forming the folding mechanism is high. 3. Folding mechanism stability is poor, and easy card is just difficult for maintaining for a long time. According to the technical scheme, firstly, the hasp is driven by the cam to be attached to the hasp hook to realize locking, and the vertical pipe shakes due to abrasion of the cam shaft after a long time of use; secondly, the hasp and the hasp hook are main stress parts, and because the adopted die casting technology has the technical defects of air holes, cracks, inclusions and the like which affect the strength, the hasp and the hasp hook can have certain fracture potential safety hazard. Meanwhile, the problem of salt spray corrosion is usually solved by spraying, and the hasp hook are coated by breaking in the process of forced extrusion lamination, so that the folding locking function failure caused by fission fracture of salt spray corrosion can be caused for a long time, and the appearance can be influenced. Thirdly, the slider subassembly has gliding function, neither totally open nor dustproof design, because the scooter possesses the attribute of riding instead of walk, can not avoid having the deposit of dust or sand and stone, the slider long-time naked hourglass can appear blocking or slip unsmoothly possibility, and because the structure of non-opening can't be maintained through wiping or washing, can only maintain through dismantling.

Disclosure of Invention

The utility model aims to provide a hook type folding mechanism and an electric scooter, which are used for solving the problems that a cam type folding mechanism in the prior art is complex and laborious to operate during locking.

The utility model provides a hook type folding mechanism, which comprises a top seat assembly connected to the bottom end of a vertical pipe and a base assembly connected to the top end of a head pipe, wherein the top seat assembly comprises a top seat, a swing rod and a tension spring, a containing cavity is arranged in the top seat, the top end of the swing rod is hinged with the top seat, the bottom end of the swing rod extends downwards at the outer side of the top seat, the tension spring is arranged in the containing cavity, one end of the tension spring is connected with the other end of the swing rod at the inner side of the swing rod, the base assembly comprises a base, a lock tongue mechanism and a lock shaft, the lock tongue mechanism is connected to the base, the lock shaft is arranged above the lock tongue mechanism on the base, a triggering part is arranged on the swing rod, a locking groove is formed in the triggering part, and the triggering part is matched with the lock shaft when the folding mechanism is changed into a locking state, so that the lock shaft is buckled in the locking groove and the lower end of the swing rod is driven to be in clamping connection with the lock tongue mechanism.

As a preferable scheme of the utility model, the opening of the locking groove is arranged towards one side of the accommodating cavity, an inclined plane which is arranged obliquely from outside to inside is arranged at the bottom side of the triggering part, when the folding mechanism is changed into a locking state, the inclined plane touches the locking shaft to enable the lower end of the swing rod to be lifted outwards and enable the locking shaft to slide into the locking groove, and meanwhile, the lower end of the swing rod is clamped with the lock tongue mechanism under the action of the tension spring.

As a preferred scheme of the utility model, the spring bolt mechanism comprises a spring bolt and a torsion spring, one end of the spring bolt is rotatably connected to the base through a spring bolt shaft, the other end of the spring bolt is provided with a tongue tip and extends to the outer side of the base, and the torsion spring is connected to the spring bolt shaft, and two ends of the torsion spring are respectively abutted to the spring bolt and the base.

As a preferable scheme of the utility model, the tip of the lock tongue is downwards arranged, the lower section of the swing rod is provided with a lock hole, the lower side of the lock hole is provided with a latch arranged towards the lock hole, and when the folding mechanism is in a locking state, the latch is clamped on the inner side of the tip of the lock tongue.

As a preferable scheme of the utility model, a hinging seat is arranged on the top seat, and the top end of the swinging rod is rotatably connected with the hinging seat through a swinging rod shaft.

As a preferable scheme of the utility model, a fixing seat protruding upwards is arranged at the top of the base, and the lock shaft is connected to the fixing seat.

As a preferable scheme of the utility model, one end of the tension spring is connected to the triggering part on the upper side of the locking groove, and the other end of the tension spring is connected to the top seat on the top of the accommodating cavity through a screw.

As a preferable mode of the utility model, the locking groove is a U-shaped groove with the bottom arranged obliquely upwards towards the opening end.

As a preferred embodiment of the present utility model, the top base and the base are hinged by a hinge shaft at a side facing away from the swing link.

The utility model also provides an electric scooter, which comprises the hook type folding mechanism, a vertical pipe, a head pipe, a front fork assembly, a transverse handle assembly and a front wheel assembly, wherein the transverse handle assembly is connected to the top end of the vertical pipe, the top seat is connected to the bottom end of the vertical pipe, the base is connected to the top end of the head pipe, the front fork assembly is connected to the bottom end of the head pipe, and the front wheel assembly is connected to the front fork assembly.

Compared with the prior art, the utility model has the following positive effects:

the utility model provides a hook type folding mechanism, which comprises a footstock component connected to the bottom end of a vertical pipe and a base component connected to the top end of a head pipe, wherein the footstock component comprises a footstock, a swinging rod and a tension spring, a containing cavity is arranged in the footstock, the top end of the swinging rod is hinged with the footstock, the bottom end of the swinging rod extends downwards at the outer side of the footstock, the tension spring is arranged in the containing cavity, one end of the tension spring is connected with the other end of the swinging rod, the other end of the tension spring is connected with the footstock, the base component comprises a base, a spring bolt mechanism and a lock shaft, the spring bolt mechanism is connected to the base, the lock shaft is arranged above the spring bolt mechanism on the base, a triggering part is arranged on the swinging rod, a locking groove is formed in the triggering part, and the triggering part is matched with the lock shaft when the folding mechanism is changed into a locking state, so that the lock shaft is buckled in the locking groove and the lower end of the swinging rod is driven to be clamped with the spring bolt mechanism. The hook type folding mechanism disclosed by the utility model has the advantages that in the process of switching the vertical pipe from the folding state to the opening state, namely, in the process of changing the folding mechanism into the locking state, the triggering part is matched with the locking shaft, and the lower end of the swing rod rotates towards the spring bolt mechanism under the action of the tension force of the tension spring and is clamped with the spring bolt mechanism, so that the vertical pipe is coaxially connected and locked with the head pipe, the automatic buckling and locking of the vertical pipe and the head pipe are realized, the swing rod is not required to be manually operated in the whole process, and the operation is simple and labor-saving.

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 schematic view of a conventional electric scooter;

FIG. 2 is an exploded view of a conventional cam structure;

FIG. 3 is a schematic view of a conventional cam structure;

FIG. 4 is a front view of a top mount assembly according to the present utility model;

FIG. 5 is a cross-sectional view of A-A of FIG. 4;

FIG. 6 is an exploded view of the top mount assembly of the present utility model;

FIG. 7 is a front view of a base assembly of the present utility model;

FIG. 8 is a cross-sectional view of B-B of FIG. 7;

FIG. 9 is an exploded view of the base assembly of the present utility model;

FIG. 10 is a schematic view of the external structure of the hook-type folding mechanism of the present utility model when opened;

FIG. 11 is a schematic view showing the internal structure of the hook type folding mechanism of the present utility model when opened;

FIG. 12 is a schematic view showing the external structure of the hook type folding mechanism of the present utility model when folded;

FIG. 13 is a schematic view showing the internal structure of the hook type folding mechanism of the present utility model when folded;

fig. 14 is a longitudinal sectional view of the hook type folding mechanism of the present utility model when folded.

In the figure: 11. a cam structure; 12. a riser; 13. a head pipe; 14. a transverse handle assembly; 15. a front fork tube; 16. a front wheel assembly; 17. a frame assembly; 18. a rear fork assembly; 19. a rear wheel assembly; 111. a handle is buckled; 112. cam swing rod; 113. a pressure spring; 114. a buckle; 115. a hasp; 116. a cam shaft; 1161. an eccentric shaft; 117. a jackscrew; 118. a cam torsion spring; 119. a hasp hook; 120. a cam top seat; 121. a cam base; 122. a rotation shaft; 21. a top base; 211. a hinge base; 212. a receiving chamber; 22. swing rod; 221. a lock hole; 222. latch teeth; 223. an inclined plane; 224. a locking groove; 225. a trigger part; 23. a swing lever shaft; 24. a tension spring; 25. a screw; 31. a base; 311. a fixing seat; 32. a bolt; 321. a tongue tip; 33. a torsion spring; 34. a latch bolt shaft; 35. a lock shaft; 4. and a hinge shaft.

Detailed Description

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," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "front," "rear," "head," "tail," and the like are merely for convenience in describing and simplifying the utility model based on the orientation or positional relationship shown in the drawings and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the 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 either fixedly connected, detachably connected, or integrally connected, for example; 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 following describes the embodiments of the present utility model in further detail with reference to the drawings.

Example 1:

the hanger type folding mechanism provided in this embodiment, as shown in fig. 4-14, includes a top seat assembly connected to the bottom end of the riser and a bottom seat assembly connected to the top end of the head pipe. The footstock assembly comprises a footstock 21, a swing rod 22 and a tension spring 24, wherein a containing cavity 212 is arranged in the footstock 21, the top end of the swing rod 22 is hinged with the footstock 21, the bottom end of the swing rod 22 extends downwards at the outer side of the footstock 21, and the tension spring 24 is arranged in the containing cavity 212, one end of the tension spring is connected with the inner side of the swing rod 22, and the other end of the tension spring is connected with the footstock 21. The base assembly includes a base 31, a latch mechanism connected to the base 31, and a latch shaft 35 disposed above the latch mechanism on the base 31. The swing rod 22 is provided with a trigger part 225, the trigger part 225 is provided with a locking groove 224, and when the folding mechanism is changed into a locking state, the trigger part 225 is matched with the lock shaft 35 to enable the lock shaft 35 to be buckled in the locking groove 224 and drive the lower end of the swing rod 22 to be clamped with the lock tongue mechanism.

The hook type folding mechanism of this embodiment is in the process of making the riser switch from folding state to open state, namely folding mechanism becomes the in-process of locking state, trigger portion 225 cooperatees with lock axle 35, makes lock axle 35 lock in locking groove 224, forms the block structure of hook type, simultaneously rotates and with spring bolt mechanism joint to spring bolt mechanism under the pulling force effect of extension spring 24 lower extreme of pendulum rod 22 to make riser and head pipe coaxial coupling and locking, realize riser and head pipe's automatic lock locking, whole process need not manual operation pendulum rod 22, easy operation laborsaving.

Preferably, as shown in fig. 11 to 14, the trigger part 225 is provided with a locking groove 224 opened toward one side of the receiving cavity 212, and a slope 223 is provided at the bottom side of the trigger part 225 from outside to inside obliquely upward. When the folding mechanism is changed into a locking state, the inclined surface 223 touches the lock shaft 35 to enable the lower end of the swing rod 22 to be lifted outwards and enable the lock shaft 35 to slide into the locking groove 224, and meanwhile, the lower end of the swing rod 22 is clamped with the lock tongue mechanism under the action of the tension spring 24. The trigger portion 225 has a thickness greater than that of the lower section of the swing link 22. As shown in fig. 11, the outer side of the swing link 22 refers to the left side of the swing link, and the inner side of the swing link 22 refers to the right side of the swing link.

When the top base 21 is folded toward the bottom base 31, the inclined surface 223 at the bottom side of the trigger portion 225 contacts the latch shaft 35, and the latch shaft 35 slides on the inclined surface 223 toward the side close to the accommodating cavity 212, the swing rod 22 rotates clockwise about the swing rod shaft 23, and the latch shaft 35 slides into the locking groove 224 along the inclined surface 223. When the lock shaft 35 starts to slide into the locking groove 224, the swing rod 22 will rotate anticlockwise by taking the swing rod shaft 23 as the center under the action of the tension force of the tension spring 24, so that the lower end of the swing rod 22 is clamped with the lock tongue mechanism, and the hook type folding mechanism is in a locking state at the moment, and any part of the hook type folding mechanism is not required to be manually operated in the whole process. And through the clamping connection of the lock shaft 35 and the locking groove 224 and the clamping connection of the swing rod 22 and the lock tongue mechanism, the double locking function is achieved, so that the folding mechanism is more firmly and reliably locked when being in a locking state.

Preferably, as shown in fig. 8 and 9, the latch mechanism includes a latch 32 and a torsion spring 33, one end of the latch 32 is rotatably connected to the base 31 through a latch shaft 34, and the other end of the latch 32 is provided with a latch tip 321 and extends to the outside of the base 31. The torsion spring 33 is connected to the latch bolt shaft 34, and two ends of the torsion spring are respectively abutted to the latch bolt 32 and the base 31, so that the latch bolt 32 can be reset after rotating around the latch bolt shaft 34. The lock shaft 35 is disposed above the lock bolt shaft 34.

Preferably, as shown in fig. 8 and 9, the tip 321 of the latch 32 is disposed downward, the lower section of the swing link 22 is provided with a latch hole 221, and a latch 222 disposed toward the latch hole 221 is disposed at the lower side of the latch hole 221. As shown in fig. 11, when the hook-type folding mechanism is in a locked state, the latch 222 is clamped inside the tip 321 of the lock tongue 32, so that the swing rod 22 is clamped with the lock tongue 32, and locking of the top seat assembly and the base assembly is achieved. The tip 321 of the lock tongue 32 passes through the lock hole 221 to the outside of the swing rod 22, and the tip 321 is clamped at the outside of the latch 222. Preferably, the tip of the latch 222 is disposed obliquely upward to the outside of the swing rod 22, so that the tongue tip 321 is engaged with the latch 222 more firmly.

After the lock shaft 35 and the locking groove 224 are clamped, the hook type folding mechanism of the embodiment can achieve the locking state of the hook type folding mechanism, the lock tongue 32 and the swing rod 22 are buckled to play a double-insurance role, and the top seat assembly and the base assembly are connected more firmly.

Preferably, as shown in fig. 5 and 6, a hinge seat 211 is provided on the top seat 21, and the top end of the swing link 22 is rotatably connected to the hinge seat 211 through a swing link shaft 23. When the hook type folding mechanism is in a locking state, the triggering part 225 is arranged on the inner side of the hinge seat 211, so that the hinge seat 211 plays a role in protecting the swing rod 22, and unlocking of the hook type folding mechanism caused by mistaken touching of the swing rod is avoided, and better safety is achieved.

Preferably, as shown in fig. 8 and 9, a fixing seat 311 is provided at the top of the base 31 to protrude upward, and the lock shaft 35 is connected to the fixing seat 311. As shown in fig. 11, the fixing seat 311 protruding upward makes the lock shaft 35 more easily contact with the inclined surface 223 of the trigger portion and makes the locking groove 224 conveniently engaged with the lock shaft 35.

Preferably, one end of the tension spring 24 is connected to the trigger portion 225 at the upper side of the locking groove 224, and the other end of the tension spring 24 is connected to the top seat 21 at the top of the accommodating cavity 212 through the screw 25. The tension spring 24 can fall back after being lifted outwards to the bottom end of the swing rod 22, the structure is simple, the use cost is low, and the replacement is convenient after damage.

Preferably, the locking groove 224 is a U-shaped groove with a bottom inclined upwards towards the opening end, so that the locking groove 224 is firmly clamped with the lock shaft 35, and the lock shaft 35 is prevented from easily slipping.

Preferably, the top seat 21 is hinged with the base 31 by a hinge shaft 4 at a side facing away from the swing link 22. The top seat 21 is hinged with the base 31 through the hinge shaft 4, so that the top seat 21 and the base 31 are connected in a clamping mode or unfolded and folded.

The embodiment also provides an electric scooter, which comprises the hook type folding mechanism, a vertical pipe, a head pipe, a front fork assembly, a transverse handle assembly and a front wheel assembly, wherein the transverse handle assembly is connected to the top end of the vertical pipe, the top seat 21 is connected to the bottom end of the vertical pipe, the base 31 is connected to the top end of the head pipe, the front fork assembly is connected to the bottom end of the head pipe, and the front wheel assembly is connected to the front fork assembly.

The outer inclined surface of the tongue tip 321 of the tongue 32 is C-plane, and the inner inclined surface of the latch 222 is B-plane.

When the latch hook type folding mechanism of the present embodiment is used, as shown in fig. 11-14, in the process of switching the stand pipe from the folded state to the unfolded state (i.e. the ridable state), when the inclined surface 223 on the swing rod 22 contacts the lock shaft 35, the swing rod shaft 23 rotates clockwise, and at the same time, the lock shaft 35 slides into the lock groove 224 along the inclined surface 223. When the lock shaft 35 starts to slide into the lock groove 224, the swing rod 22 will rotate counterclockwise around the swing rod shaft 23 under the action of tension force, and when the B surface on the swing rod 22 contacts with the C surface on the lock tongue 32, the latch 222 will generate thrust to the tongue tip 321 under the action of tension force and inertia, and the lock tongue 32 will rotate clockwise around the lock tongue shaft 34. When the surface B of the swing rod 22 is separated from the surface C of the lock tongue 32, the lock tongue 32 rotates anticlockwise around the lock tongue shaft 34 to reset. At this time, the folding mechanism is in a locking state, and any part of the folding mechanism is not required to be manually operated in the whole process. When the riser is switched from the open state to the folded state, the lock tongue 32 is pushed upwards, the swing rod 22 is pulled outwards to rotate clockwise around the swing rod shaft 23, the lock shaft 35 is gradually separated from the lock groove 224, and finally the folding is completed and unlocking is completed.

Compared with the traditional cam folding mechanism, the hook type folding mechanism of the embodiment has the following advantages: a. the convenience of connection of the locking groove 224 and easy guarantee of the processing precision of the pin shaft part are utilized. According to the scheme, in the process of opening the vertical pipe, the locking groove 224 of the swing rod can be automatically buckled on the locking shaft 35, the synchronous swing rod generates inertia under tension of the tension spring, the latch 222 can be automatically buckled with the lock tongue, and the swing rod is not required to be manually operated in the whole process; when the vertical pipe is required to be switched to a state, the lock tongue is pushed upwards, and then the swing rod is pulled to unlock and fold. The swing rod and the trigger part are integrally formed, so that the folding locking or unlocking linkage is good, and the operation is simple and labor-saving. b. The structure is simplified, and the main stress piece (trigger part), the functional piece (lock catch) and the swing rod are integrated into a whole, so that the number of parts is reduced, the assembly is simplified, and the cost is reduced; and secondly, the swing rod and the lock tongue adopt the processes of profile and machining, so that the die casting process is reduced, and the cost is reduced. c. The triggering part of the swing rod and the lock shaft are stress parts, wherein the lock shaft is made of stainless steel, the swing rod and the lock tongue are made of aluminum alloy sections, and the strength and the corrosion resistance are superior to those of die castings. In addition, the whole structure is completely open, the strength is higher than that of a die casting process, and meanwhile, the stability of an anodic oxidation surface treatment process of the aluminum alloy section is better than that of a casting spraying process. And the structure is completely open, once sand dust or foreign matter deposition occurs, the structure can be maintained only by flushing or direct replacement, and the structure is stable and reliable, is not easy to block and is easy to maintain.

The above description is only of the preferred embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can make several variations and modifications without departing from the inventive concept, and it is intended to cover the scope of the present utility model.

Claims (10)

1. The utility model provides a couple formula folding mechanism, its characterized in that, including connecting in the footstock subassembly on riser bottom and connecting in the base subassembly on head pipe top, the footstock subassembly includes footstock (21), pendulum rod (22) and extension spring (24), be provided with holding chamber (212) in footstock (21), the top of pendulum rod (22) with footstock (21) articulated just the bottom of pendulum rod (22) is in the outside downwardly extending setting of footstock (21), extension spring (24) set up in holding chamber (212) and its one end with the inboard of pendulum rod (22) is connected the other end with footstock (21) are connected, the base subassembly includes base (31), latch mechanism and lock axle (35), latch mechanism connect in on base (31), the lock axle set up in the top of latch mechanism be provided with trigger part (225) on trigger part (225) be provided with locking groove (224), when folding mechanism is in trigger state with latch mechanism (35) lock end (35) match latch mechanism in lock groove (224).

2. The hook-type folding mechanism according to claim 1, wherein an opening of the locking groove (224) is arranged towards one side of the accommodating cavity (212), an inclined surface (223) which is arranged obliquely upwards from outside to inside is arranged at the bottom side of the triggering portion (225), the inclined surface (223) touches the locking shaft (35) to enable the lower end of the swinging rod (22) to be lifted outwards and enable the locking shaft (35) to slide into the locking groove (224) when the folding mechanism is changed into a locking state, and meanwhile the lower end of the swinging rod (22) is clamped with the locking bolt mechanism under the action of the tension spring (24).

3. The hook-type folding mechanism according to claim 1, wherein the latch mechanism comprises a latch (32) and a torsion spring (33), one end of the latch (32) is rotatably connected to the base (31) through a latch shaft (34), the other end of the latch (32) is provided with a latch tip (321) and extends to the outer side of the base (31), the torsion spring (33) is connected to the latch shaft (34), and two ends of the torsion spring are respectively abutted to the latch (32) and the base (31).

4. A hook-type folding mechanism according to claim 3, wherein the tongue tip (321) of the tongue (32) is disposed downward, a lock hole (221) is disposed at the lower section of the swing rod (22), a latch (222) disposed toward the lock hole (221) is disposed at the lower side of the lock hole (221), and when the folding mechanism is in a locked state, the latch (222) is clamped inside the tongue tip (321) of the tongue (32).

5. The hook-type folding mechanism according to claim 1, wherein a hinge base (211) is provided on the top base (21), and the top end of the swing rod (22) is rotatably connected with the hinge base (211) through a swing rod shaft (23).

6. A hook-type folding mechanism according to claim 1, characterized in that a fixing seat (311) protruding upwards is provided at the top of the base (31), and the lock shaft (35) is connected to the fixing seat (311).

7. A hook-type folding mechanism according to claim 2, wherein one end of the tension spring (24) is connected to the trigger portion (225) on the upper side of the locking groove (224), and the other end of the tension spring (24) is connected to the top base (21) on the top of the accommodating cavity (212) by a screw (25).

8. A hook-type folding mechanism according to claim 2, wherein the locking groove (224) is a U-shaped groove having a bottom portion provided obliquely upward toward an open end thereof.

9. A hook-type folding mechanism according to claim 1, characterized in that the top seat (21) is hinged to the base (31) on the side facing away from the pendulum (22) by means of a hinge shaft (4).

10. An electric scooter, characterized by comprising the hook type folding mechanism as claimed in any one of claims 1-9, a vertical pipe, a head pipe, a front fork assembly, a transverse handle assembly and a front wheel assembly, wherein the transverse handle assembly is connected to the top end of the vertical pipe, a top seat (21) is connected to the bottom end of the vertical pipe, a base (31) is connected to the top end of the head pipe, the front fork assembly is connected to the bottom end of the head pipe, and the front wheel assembly is connected to the front fork assembly.