CN220410798U - Latch type folding mechanism and electric scooter - Google Patents

Abstract

The utility model provides a latch 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 is complex and laborious to operate during locking in the prior art. The latch 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

Latch 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 latch 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 latch 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 is arranged on the upper side of the base component and hinged with one side of the base component, the footstock component comprises a footstock, a swinging rod and a locking mechanism, the locking mechanism and the swinging rod are both connected to the footstock, the bottom end of the swinging rod extends downwards on the outer side of the footstock, the base component comprises a base and a lock tongue mechanism, the lock tongue mechanism is connected to the base, a lock shaft is arranged at the upper end of the base, the locking mechanism is connected with the upper end of the swinging rod, and when the folding mechanism is in a locking state, the locking mechanism is buckled with the lock shaft and pulls the swinging rod to enable the lower end of the swinging rod to be clamped with the lock tongue mechanism.

As a preferable scheme of the utility model, the locking mechanism comprises a locking arm, a lock catch and a tension spring, wherein the locking arm and the lock catch are respectively and rotatably connected to the top seat through a locking arm shaft and a locking shaft, the upper end of the locking arm is in sliding connection with the swing rod, the bottom end of the locking arm is connected with the lock catch through the tension spring, and when the folding mechanism is changed into a locking state, the lock catch is buckled with the locking shaft and drives the top end of the locking arm to rotate upwards through the tension spring and drives the bottom end of the swing rod to rotate towards one side close to the lock tongue mechanism.

As a preferable scheme of the utility model, the lock catch is arranged between the lock catch arm and the swing rod, a notch matched with the lock shaft is arranged on one side of the lock catch, which is close to the swing rod, and when the folding mechanism is changed into a locking state, the lock shaft slides into the notch from the upper side surface of the notch and drives the lock catch to rotate so as to elongate the tension spring.

As a preferable scheme of the utility model, a convex edge is arranged on one side, close to the lock catch arm, of the lock catch shaft, a groove matched with the convex edge is arranged on the lock catch arm, and when the folding mechanism is changed into a locking state, the convex edge slides into the groove from the upper side of the groove under the tensile force of the tension spring and drives the top end of the lock catch arm to rotate upwards.

As a preferable scheme of the utility model, the upper section of the swing rod is rotatably connected with the top seat through a swing rod shaft, a strip-shaped sliding hole is formed in the upper end of the lock catch arm, a connecting shaft is arranged at the top end of the swing rod, and the swing rod is slidably arranged in the strip-shaped sliding hole through the connecting shaft to be slidably connected with the lock catch arm.

As a preferable 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 part extending 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 tongue tip of the lock tongue is upwards arranged, the lower section of the swing rod is provided with a lock hole, the upper 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 tongue tip of the lock tongue.

As a preferable scheme of the utility model, the bottom end of the lock catch is provided with a first lug protruding downwards, the first lug is arranged at the lower side of the notch, the bottom end of the lock catch arm is provided with a second lug protruding downwards, the second lug extends downwards obliquely towards one side deviating from the lock catch, and one end of the tension spring is connected with the first lug, and the other end of the tension spring is connected with the second lug.

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 latch 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 latch 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 is arranged on the upper side of the base assembly and hinged with one side of the base assembly, the top seat assembly comprises a top seat, a swinging rod and a locking mechanism, the locking mechanism and the swinging rod are connected to the top seat, the bottom end of the swinging rod extends downwards at the outer side of the top seat, the base assembly comprises a base and a lock tongue mechanism, the lock tongue mechanism is connected to the base, a lock shaft is arranged at the upper end of the base, the locking mechanism is connected with the upper end of the swinging rod, and when the folding mechanism is changed into a locking state, the locking mechanism is buckled with the lock shaft and pulls the swinging rod to enable the lower end of the swinging rod to be clamped with the lock tongue mechanism. The latch type folding mechanism provided 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 locking mechanism triggers and pulls the swing rod to enable the lower end of the swing rod to be clamped with the spring bolt mechanism, so that the vertical pipe is coaxially connected with 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. The whole process is locked once, so the folding structure is called as a 'bump lock type'.

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 exterior structure of the latch-type folding mechanism of the present utility model when opened;

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

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

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

fig. 14 is a longitudinal sectional view of the latch 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. cam torsion springs; 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; 23. a swing lever shaft; 24. a latch arm; 241. a bar-shaped slide hole; 242. a groove; 243. a second bump; 25. a latch arm shaft; 26. a connecting shaft; 27. locking; 271. a notch; 272. a convex edge; 273. a first bump; 28. a latch shaft; 29. a tension spring; 31. a base; 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 latch type folding mechanism provided in this embodiment, as shown in fig. 4 to 14, includes a top seat assembly connected to the bottom end of the riser and a base assembly connected to the top end of the head pipe, where the top seat assembly is disposed on the upper side of the base assembly and hinged to one side of the base assembly. The footstock subassembly includes footstock 21, pendulum rod 22 and locking mechanism, locking mechanism and pendulum rod 22 all connect on footstock 21, and the bottom of pendulum rod 22 extends downwards in the outside of footstock 21 and sets up, and the base subassembly includes base 31 and spring bolt mechanism, and spring bolt mechanism connects on base 31, is provided with lock shaft 35 in the upper end of base 31, and locking mechanism is connected with the upper end of pendulum rod 22, and locking mechanism and lock shaft 35 lock and pulling pendulum rod 22 make the lower extreme and the spring bolt mechanism joint of pendulum rod 22 when folding mechanism becomes locking state. A receiving chamber 212 is provided in the top base 21, and a locking mechanism is provided in the receiving chamber 212.

In the latch type folding mechanism of the embodiment, 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 locking mechanism is triggered and buckled with the lock shaft 35, and meanwhile, the swing rod 22 is pulled to enable the lower end of the swing rod 22 to be clamped with the lock tongue mechanism, so that the vertical pipe is coaxially connected with and locked with the head pipe, the automatic buckling and locking of the vertical pipe and the head pipe are realized, the swing rod 22 is not required to be manually operated in the whole process, and the operation is simple and labor-saving. The whole process is locked once, so the folding structure is called as a 'bump lock type'.

Preferably, as shown in fig. 5 and 6, the locking mechanism includes a latch arm 24, a latch 27, and a tension spring 29, and the latch arm 24 and the latch 27 are rotatably connected to the top chassis 21 by a latch arm shaft 25 and a latch shaft 28, respectively. The upper end of the latch arm 24 is slidably connected with the swing rod 22, and the bottom end of the latch arm 24 is connected with the latch 27 through a tension spring 29. When the folding mechanism is changed into a locking state, the lock catch 27 is buckled with the lock shaft 35, and the top end of the lock catch arm 24 is driven to rotate upwards through the tension spring 29, and the bottom end of the swing rod 22 is driven to rotate to one side close to the lock tongue mechanism, so that the swing rod 22 is clamped with the lock tongue mechanism.

The locking mechanism in this embodiment is through setting up hasp arm 24, hasp 27 and extension spring 29, make hasp arm 24 and hasp 27 realize the linkage through the connection of extension spring 29, when folding mechanism became locking state, hasp 27 and lock axle 35 knot and drive the top of hasp arm 24 through extension spring 29 at the in-process of lock and upwards rotate, simultaneously hasp arm 24 drive the bottom of pendulum rod 22 to the side rotation that is close to spring bolt mechanism, make pendulum rod 22 and spring bolt mechanism joint to realize riser and head pipe's automatic lock.

5. Preferably, as shown in fig. 11-14, the latch 27 is disposed between the latch arm 24 and the swing link 22. The lock catch 27 is provided with a notch 271 which is matched with the lock shaft 35 on one side close to the swing rod 22, and when the folding mechanism is in a locking state, the lock shaft 35 slides into the notch 271 from the upper side of the notch 271 and drives the lock catch 27 to rotate so as to elongate the tension spring 29. The notch 271 has a U-shaped structure opened toward one side of the swing link 22. As shown in fig. 11, the upper side of the notch 271 is a B-plane. A fixing seat 311 protruding upwards is arranged at the top of the base 31, and a lock shaft 35 is connected to the fixing seat 311.

When the riser is switched from the folded state to the unfolded state, the lock shaft 35 is rotated clockwise around the lock shaft 28, the lock shaft 35 slides into the notch 271 along the surface a, the lock pushes the lock arm 24 to rotate counterclockwise around the lock arm shaft 25, and the tension spring 29 is pulled out gradually.

Preferably, as shown in fig. 5 and 6, a convex edge 272 is provided on the lock shaft 35 at a side close to the latch arm 24, and a groove 242 adapted to the convex edge 272 is provided on the latch arm 24. When the folding mechanism is changed to a locked state, the convex edge 272 slides into the groove 242 from the upper side of the groove 242 under the pulling force of the tension spring 29 and drives the top end of the latch arm 24 to rotate upwards. The notch of the groove 242 is disposed toward the latch 27. The latch shaft 28 is disposed between the notch 271 and the flange 272. The latch arm shaft 25 is disposed between the tip of the latch arm 24 and the recess 242.

When the convex edge 272 slides into the groove 242 from the upper side of the groove 242 under the pulling force of the tension spring 29, the latch arm 24 rotates clockwise, the top end of the latch arm 24 rotates upwards, the bottom end of the swing rod 22 is driven to rotate towards the side close to the latch mechanism, and the swing rod 22 is clamped with the latch mechanism.

Preferably, as shown in fig. 5, a first protrusion 273 protruding downward is disposed at the bottom end of the latch 27, the first protrusion 273 is disposed at the lower side of the notch 271, a second protrusion 243 protruding downward is disposed at the bottom end of the latch arm 24, the second protrusion 243 extends obliquely downward to a side facing away from the latch 27, and one end of the tension spring 29 is connected to the first protrusion 273 and the other end is connected to the second protrusion 243. The second bump 243 is disposed at the lower side of the groove 242. When the lock 27 rotates, the lock arm 24 can be driven to rotate, and the convex edge 272 can slide into the groove 242 under the tension of the tension spring 29.

Preferably, the upper section of the swing rod 22 is rotatably connected with the top seat 21 through a swing rod shaft 23, a bar-shaped sliding hole 241 is formed in the upper end of the latch arm 24, a connecting shaft 26 is arranged at the top end of the swing rod 22, and the swing rod 22 is slidably arranged in the bar-shaped sliding hole 241 through the connecting shaft 26 to be slidably connected with the latch arm 24, so that the rotation of the latch arm 24 can drive the swing rod 22 to rotate, the latch arm 24 drives the swing rod 22 to rotate anticlockwise when rotating clockwise, and the latch arm 24 drives the swing rod 22 to rotate clockwise when rotating anticlockwise.

As shown in fig. 6, a hinge seat 211 is disposed on the top seat 21, the hinge seat 211 is disposed outside the accommodating cavity 212, the upper section of the swing rod 22 is rotatably connected with the hinge seat 211 through a swing rod shaft 23, and the top end of the swing rod 22 is disposed in the accommodating cavity 212 by extending from the swing rod shaft 23 and slidably connected with the latch arm 24 through a connecting shaft 26 in the accommodating cavity 212.

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 tongue 32 is disposed upward, 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 an upper side of the latch hole 221. When the folding mechanism is in a locking state, the latch 222 is clamped on the inner side of the tongue 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 realized. The tooth tips of the latch 222 are disposed downward.

After the convex edge 272 and the groove 242 are clamped, the latch type folding mechanism of the embodiment can achieve the locking state of the folding mechanism, the locking of the lock tongue and the swing rod plays a role of double insurance, and the connection of the top seat assembly and the base assembly is more stable.

Preferably, as shown in fig. 10, the top base 21 is hinged with the bottom 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 latch 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 inclined surface of the latch arm 24 on the upper side of the groove 242 is a surface D, the inclined surface of the lower side of the convex edge 272 is a surface C, the outer side surface of the tongue tip 321 is a surface E, and the inner side surface of the latch 222 is a surface F.

In use, as shown in fig. 11-14, when the stand pipe is switched from the folded state to the unfolded state (i.e. the riding state), the B-surface of the lock catch 27 contacts the lock shaft 35, and the lock shaft 35 rotates clockwise about the lock catch shaft 28, and slides into the notch 271 along the B-surface. The surface C of the lock catch pushes the surface D of the lock catch arm 24 to rotate counterclockwise around the lock catch arm shaft 25, the tension spring 29 is gradually pulled away, and the swing rod 22 rotates clockwise around the swing rod shaft 23 under the driving of the lock catch arm 24. When the riser is completely opened, the latch arm 24 rotates clockwise about the latch arm shaft 25 under the action of tension force, and the flange 272 slides into the groove 242 from the upper side of the groove 242 and is engaged with the groove 242. Meanwhile, the latch arm 24 drives the swing rod 22 to rotate anticlockwise by taking the swing rod shaft 23 as the center, and when the surface of the swing rod F contacts with the surface of the lock tongue E, the action of tension spring force and inertia of the swing rod 22 can generate thrust to the lock tongue 32, and the lock tongue 32 can rotate anticlockwise by taking the lock tongue shaft 34 as the center. When the swing rod F surface is separated from the lock tongue E surface, the lock tongue 32 rotates clockwise 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, only the lock tongue 32 is required to be pushed downwards, and then the swing rod 22 is pulled in the horizontal direction away from the lock tongue 32, the swing rod 22 drives the latch arm 24 to rotate anticlockwise around the latch arm shaft 25, the tension spring 29 is gradually lengthened, and when the convex edge 272 is completely separated from the groove 242, the latch 27 rotates anticlockwise around the latch shaft 28 under the action of the tension spring. At the same time, the lock shaft 35 gradually breaks away from the notch 271, and finally the folding is completed and unlocked.

Compared with the traditional cam folding mechanism, the latch folding mechanism of the embodiment has the following advantages: a. the lock shaft 35 can be automatically buckled with the lock catch 27 in the process of opening the vertical pipe, the synchronous swing rod 22 can be automatically buckled with the lock tongue 32 under the inertia generated by tension spring force, and the swing rod 22 is not required to be manually operated in the whole process; when the vertical pipe is required to be switched to a folding state, the folding can be performed by only pushing the lock tongue 32 upwards and then pulling the swing rod 22, the folding locking or unlocking linkage is good, and the operation is simple and labor-saving. b. The folding structure is simplified, and the main stress piece and the functional piece are built in to weaken the appearance attribute as much as possible, so that the extrusion or stamping process with relatively low cost can be used for replacing the casting process with higher cost; secondly, the number of parts is reduced, and the parts associated with each assembly procedure are fewer, so that the assembly is convenient and the cost is reduced; c. the lock shaft 35, the lock catch 27 and the lock catch arm 24 are all stressed pieces, wherein the lock shaft 35 is made of stainless steel, the lock catch 27 and the lock catch arm 24 are made of aluminum alloy sections or metal plates through stamping, and the strength and the corrosion resistance are superior to those of die castings. In addition, the lock tongue 32 adopts an aluminum alloy section process and is completely open in structure, so that 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 fully developed, and once sand dust or foreign matter deposition occurs, the structure can be maintained only by flushing or direct replacement. The structure is stable and reliable, the clamping is not easy, and the maintenance is easy.

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 latch folding mechanism, its characterized in that, including connect in the footstock subassembly of riser bottom and connect in the base subassembly on head pipe top, the footstock subassembly set up in the upside of base subassembly and with one side of base subassembly articulates, the footstock subassembly includes footstock (21), pendulum rod (22) and locking mechanism, locking mechanism with pendulum rod (22) all connect in on footstock (21), just the bottom of pendulum rod (22) is in the outside downwardly extending setting of footstock (21), the base subassembly includes base (31) and spring bolt mechanism, spring bolt mechanism connect in on base (31) the upper end of base (31) be provided with lock axle (35), locking mechanism with the upper end of pendulum rod (22) is connected, locking mechanism with lock axle (35) lock and pulling pendulum rod (22) make the lower extreme of pendulum rod (22) with spring bolt mechanism joint when folding mechanism becomes locking state.

2. The latch type folding mechanism according to claim 1, wherein the locking mechanism comprises a latch arm (24), a latch (27) and a tension spring (29), the latch arm (24) and the latch (27) are rotatably connected to the top seat (21) through a latch arm shaft (25) and a latch shaft (28) respectively, the upper end of the latch arm (24) is slidably connected with the swing rod (22), the bottom end of the latch arm (24) is connected with the latch (27) through the tension spring (29), and when the folding mechanism is changed into a locking state, the latch (27) is buckled with the latch shaft (35) and drives the top end of the latch arm (24) to rotate upwards and drives the bottom end of the swing rod (22) to rotate towards one side close to the latch mechanism through the tension spring (29).

3. A latch type folding mechanism according to claim 2, wherein the lock catch (27) is disposed between the lock catch arm (24) and the swing rod (22), a notch (271) adapted to the lock shaft (35) is disposed on a side of the lock catch (27) close to the swing rod (22), and when the folding mechanism is changed to a locked state, the lock shaft (35) slides into the notch (271) from an upper side of the notch (271) and drives the lock catch (27) to rotate to elongate the tension spring (29).

4. A latch type folding mechanism according to claim 3, wherein a convex edge (272) is provided on one side of the lock shaft (35) close to the latch arm (24), a groove (242) matched with the convex edge (272) is provided on the latch arm (24), and when the folding mechanism is changed into a locked state, the convex edge (272) slides into the groove (242) from the upper side of the groove (242) under the pulling force of the tension spring (29) and drives the top end of the latch arm (24) to rotate upwards.

5. The latch type folding mechanism according to claim 2, wherein an upper section of the swing rod (22) is rotatably connected with the top seat (21) through a swing rod shaft (23), a bar-shaped sliding hole (241) is formed in the upper end of the latch arm (24), a connecting shaft (26) is arranged at the top end of the swing rod (22), and the swing rod (22) is slidably arranged in the bar-shaped sliding hole (241) through the connecting shaft (26) to be slidably connected with the latch arm (24).

6. A latch 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), and 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).

7. The latch type folding mechanism according to claim 6, wherein a tongue tip (321) of the lock tongue (32) is disposed upward, a lock hole (221) is disposed at a lower section of the swing rod (22), a latch (222) disposed toward the lock hole (221) is disposed at an upper 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 lock tongue (32).

8. The latch type folding mechanism according to claim 4, wherein a first protrusion (273) protruding downward is provided at the bottom end of the latch (27), the first protrusion (273) is provided at the lower side of the notch (271), a second protrusion (243) protruding downward is provided at the bottom end of the latch arm (24), the second protrusion (243) extends obliquely downward to a side facing away from the latch (27), and one end of the tension spring (29) is connected with the first protrusion (273) and the other end is connected with the second protrusion (243).

9. A latch-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 rod (22) by means of a hinge shaft (4).

10. An electric scooter, characterized by comprising the latch type folding mechanism as claimed in any one of claims 1 to 9, a vertical pipe, a head pipe, a front fork assembly, a handle assembly and a front wheel assembly, wherein the 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.