Folding mechanism and scooter

Abstract

The invention provides a folding mechanism and a scooter. The folding mechanism comprises a first folding seat; the second folding seat is provided with a connecting shaft seat; the connecting shaft assembly is rotatably arranged on the connecting shaft seat; the nut locking part is provided with a mounting hole, and at least one part of the connecting shaft assembly is located in the mounting hole; the connecting shaft assembly is sleeved with the connecting end of the wrench locking part, and the connecting end of the wrench locking part synchronously rotates along with the connecting shaft assembly. The ends, away from the connecting shaft assembly, of the nut locking part and the wrench locking part are used for locking the first folding base. And the limiting abutting part is arranged between the mounting hole and the connecting shaft assembly, so that after the wrench locking part is unlocked relative to the first folding seat and turned over to be opened by a preset angle, the limiting abutting part is triggered to enable the connecting shaft assembly to drive the nut locking part to rotate, and the nut locking part unlocks the first folding seat. The scooter solves the problem that a fastening bolt of a scooter in the prior art is easy to wear and rust.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a folding mechanism and a scooter. Background Art

[0002] The scooter is small in size and easy to fold, and is popular among young people and designated drivers. When in use, the scooter is opened and the locking structure is locked to maintain the integrity of the vehicle model. After use, the locking state of the locking structure can be released, and the scooter can be folded and stored to further reduce the occupied space.

[0003] The existing scooters generally include two parts, one part is provided with a rotatable tightening bolt and a locking wrench, and the other part is provided with a slot. The tightening bolt and the slot are engaged to achieve locking of the two parts of the scooter. A first protrusion is provided on the locking wrench to abut against a second protrusion on the outer peripheral side of the tightening bolt. When the locking wrench is rotated, the first protrusion abuts against the second protrusion, so that the locking wrench is used to drive the tightening bolt to rotate, and the engagement between the tightening bolt and the slot is released, thereby completing the unlocking. However, with this method, after long-term use, the coating of the tightening bolt is easily damaged by the trigger, resulting in wear of the tightening bolt. The worn tightening bolt comes into contact with the air and rusts, thereby reducing its service life. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a scooter with a fastening bolt that is not prone to wear.

[0005] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0006] A folding mechanism comprises: a first folding seat; a second folding seat, the second folding seat having a connecting shaft seat; a connecting shaft assembly, the connecting shaft assembly being rotatably arranged on the connecting shaft seat; a nut locking portion, the nut locking portion having a mounting hole, at least a portion of the connecting shaft assembly being located in the mounting hole; a wrench locking portion, the connecting end of the wrench locking portion being sleeved on the connecting shaft assembly and rotating synchronously with the connecting shaft assembly, the nut locking portion and an end of the wrench locking portion away from the connecting shaft assembly being used to lock the first folding seat; a limiting abutment portion, the limiting abutment portion being arranged between the mounting hole and the connecting shaft assembly, so that after the wrench locking portion is unlocked relative to the first folding seat and flipped open at a preset angle, the limiting abutment portion is triggered to cause the connecting shaft assembly to drive the nut locking portion to rotate, so that the nut locking portion releases the lock on the first folding seat.

[0007] The connecting shaft assembly is partially arranged in the mounting hole on the nut locking part, and one end of the nut locking part is locked with the first folding seat. When the nut locking part and the first folding seat are unlocked, the connecting shaft assembly can be driven to rotate by rotating the wrench locking part, thereby triggering the limiting abutment part to unlock the nut locking part and the first folding seat. During this process, the limiting abutment part is located between the mounting hole and the connecting shaft assembly, and the wrench locking part does not directly contact the nut locking part. Even if it is used for a long time, the coating on the outer peripheral side of the nut locking part will not be worn and rusted due to the protruding structure on the wrench locking part, thereby improving the service life of the nut locking part.

[0008] In some embodiments, the preset angle is greater than 10 degrees and less than 45 degrees. By designing the preset angle to be between 10 degrees and 45 degrees, the limit abutment portion can be triggered more quickly and labor-savingly.

[0009] In some embodiments, the connecting shaft assembly includes: a connecting shaft, the connecting end of the wrench locking part is sleeved on the connecting shaft and rotates synchronously with the connecting shaft assembly; an eccentric wheel, the eccentric wheel is eccentrically arranged on the connecting shaft, the eccentric wheel can be accommodated in the mounting hole, and the limiting abutment part is arranged at the matching position between the eccentric wheel and the mounting hole. The wrench locking part and the eccentric wheel are connected by the connecting shaft so that the wrench locking part can be rotated to drive the eccentric wheel to rotate, thereby triggering the limiting abutment part to release the locking state of the nut locking part.

[0010] In some embodiments, the connecting shaft assembly further comprises a reset member, and two ends of the reset member abut against the second folding seat and the nut locking portion respectively. By providing the reset member to drive the nut locking member to reset, the operation steps are simplified and the time of folding or opening the folding mechanism is saved.

[0011] In some embodiments, the position-limiting abutment is arranged at the distal end of the eccentric wheel; and / or the position-limiting abutment is arranged close to the second folding seat relative to the first folding seat. By arranging the position-limiting abutment close to the second folding seat, the space of the folding mechanism can be reasonably utilized. At the same time, arranging the position-limiting abutment at the distal end of the eccentric wheel can also increase the torque, which is convenient for unlocking.

[0012] In some embodiments, the limiting abutment portion includes: a limiting step structure provided at the hole wall of the mounting hole; an abutment protrusion, the abutment protrusion extends along the radial direction of the eccentric wheel and can contact or disengage with the limiting step structure, when the abutment protrusion contacts the stopper with the limiting step structure, the nut locking portion can rotate synchronously with the eccentric wheel, when the abutment protrusion disengages from the limiting step structure, the eccentric wheel rotates relative to the nut locking portion. By providing the abutment protrusion, the wrench locking portion is used to drive the connecting shaft to rotate and then drive the abutment protrusion on the eccentric wheel to approach the limiting step structure, and the unlocking method of completing the nut locking portion can achieve rapid unlocking. At the same time, this method is relatively simple to process and assemble.

[0013] In some embodiments, a receiving groove is provided at the hole wall of the mounting hole, the receiving groove extends a preset length along the circumference of the mounting hole, and a limited step structure is formed at the groove wall surface of the receiving groove in the extension direction, and the abutting protrusion extends along the radial direction of the eccentric wheel and extends into the receiving groove. By providing the receiving groove in the mounting hole and the abutting protrusion extending along the radial direction of the eccentric cam, the mounting hole is abutted by the abutting protrusion and the proximal end of the eccentric cam at the same time, ensuring that the nut locking portion can be driven by the wrench locking portion to achieve a change in the locking state.

[0014] In some embodiments, the abutting protrusion has a first limiting position and a non-limiting position; when the abutting protrusion is in the first limiting position, the limiting abutting portion abuts against the groove wall of the accommodating groove, so that the connecting shaft assembly can drive the nut locking portion to rotate together; when the abutting protrusion is in the non-limiting position, the limiting abutting portion releases the abutment against the groove wall of the accommodating groove, and the connecting shaft assembly can rotate relative to the nut locking portion. The nut locking portion is switched from an unlocked state to a locked state by moving the abutting protrusion between the first limiting position and the non-limiting position, and the structure is simple and convenient for users to operate.

[0015] In some embodiments, the abutting protrusion also has a second limiting position; when the abutting protrusion is in the second limiting position, the nut locking portion is in a position to lock the first folding seat, and the limiting abutting portion stops the groove wall on the other side of the accommodating groove. By placing the abutting protrusion in the second limiting position, the locking state of the nut locking portion can be maintained, thereby improving the locking effect.

[0016] In some embodiments, the wrench locking part includes: a wrench body, a slideway is provided on the wrench body; a safety buckle, the safety buckle is slidably arranged at the slideway, the safety buckle has a locking tongue for locking the first folding seat, and when the safety buckle is locked with the first folding seat, the safety buckle is at the end of the slideway; an elastic retainer, the elastic retainer is arranged on the wrench body and presses the safety buckle, so that the safety buckle has a retaining force to remain at the end of the slideway. The locking tongue on the safety buckle is locked with the first folding seat, thereby preventing the wrench body from being opened accidentally. The provision of the elastic retainer can prevent the safety buckle from sliding in the slideway, causing the locking tongue to detach from the first folding seat, thereby improving the safety of the folding mechanism.

[0017] In some embodiments, the limiting abutment portion has a limiting state and a non-limiting state. When the limiting abutment portion is in the limiting state, the connecting shaft assembly drives the nut locking portion to rotate synchronously; when the limiting abutment portion is in the non-limiting state, the connecting shaft assembly and the nut locking portion can rotate relative to each other. By operating the wrench locking portion to switch the state of the limiting abutment portion, the nut locking portion can be locked and unlocked, which is simple to operate and improves the user experience.

[0018] The present invention also provides a scooter, comprising the above-mentioned folding mechanism.

[0019] The present invention has the following beneficial effects: the connecting shaft assembly is partially arranged in the mounting hole on the nut locking part, and one end of the nut locking part is locked with the first folding seat. When the locking of the nut locking part and the first folding seat is released, the connecting shaft assembly can be driven to rotate by rotating the wrench locking part, thereby triggering the limiting abutment part, and realizing the unlocking between the nut locking part and the first folding seat. In this process, the limiting abutment part is located between the mounting hole and the connecting shaft assembly, and the wrench locking part does not directly contact the nut locking part. Even if it is used for a long time, the coating on the outer peripheral side of the nut locking part will not be worn and rusted due to the protruding structure on the wrench locking part (the protruding structure in the prior art has been cancelled in this scheme), thereby improving the service life of the nut locking part and solving the problem that the tightening bolts of the scooter in the prior art are easily worn and rusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a folding mechanism provided in a specific embodiment of the present invention;

[0022] Figure 2 An exploded view of a folding mechanism provided in a specific embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a non-limiting state of an abutting limiting portion provided by a specific embodiment of the present invention;

[0024] Figure 4 A schematic structural diagram of a transition state of an abutment limit portion provided by a specific embodiment of the present invention;

[0025] Figure 5 A schematic structural diagram of a contact limiting portion in a limiting state provided by a specific embodiment of the present invention.

[0026] The above drawings include the following reference numerals:

[0027] 10. First folding seat; 11. Limiting slot; 12. Connecting piece; 20. Second folding seat; 21. Connecting shaft seat; 22. Rotating shaft seat; 30. Connecting shaft assembly; 31. Connecting shaft; 32. Eccentric wheel; 33. Reset piece; 40. Nut locking part; 41. Mounting hole; 42. Limiting cap; 50. Wrench locking part; 51. Wrench body; 511. Slide; 52. Safety buckle; 53. Elastic retaining piece; 54. Lock tongue; 60. Limiting abutting part; 61. Accommodating groove; 611. Limiting step structure; 62. Abutting protrusion; 70. Rotating shaft. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. used herein do not specifically refer to order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0035] The technical solution of the present invention will be described below in conjunction with the accompanying drawings.

[0036] In order to solve the problem that the fastening bolts of the scooter in the prior art are easily worn and rusted, the present invention provides a folding mechanism and a scooter.

[0037] The folding mechanism is widely used in foldable scooters to connect structural parts that need to be movably connected and locked. Of course, the folding mechanism is also applicable to other application scenarios that require folding besides scooters.

[0038] In some embodiments, Figures 1 to 5 As shown, the folding mechanism includes a first folding seat 10, a second folding seat 20, a connecting shaft assembly 30, a nut locking portion 40 and a wrench locking portion 50, a limiting abutment portion 60 and a rotating shaft 70. The first folding seat 10 and the second folding seat 20 are respectively used to connect two structural members that need to be folded. At the same time, one end of the first folding seat 10 and the second folding seat 20 are pivotally connected through the rotating shaft 70; the other end of the first folding seat 10 and the second folding seat 20 is used for locking or unlocking.

[0039] In order to realize the switching of locking and unlocking of the first folding seat 10 and the second folding seat 20, in some embodiments, as shown in FIG. Figures 1 to 5 As shown, one end of the nut locking portion 40 and one end of the wrench locking portion 50 are connected to the second folding seat 20 through the connecting shaft assembly 30, and the other end of the nut locking portion 40 and the other end of the wrench locking portion 50 are locked to the first folding seat 10.

[0040] When the scooter needs to be stored and folded, it is only necessary to release the lock between the wrench locking part 50 and the first folding seat 10 and rotate the wrench locking part 50. After the wrench locking part 50 is rotated to a preset angle, the nut locking part 40 and the first folding seat 10 are unlocked by rotating the connecting shaft assembly 30 and the limiting abutment part 60. At this time, the first folding seat 10 can rotate relative to the second folding seat 20 around the rotating shaft 70, thereby realizing the folding and storage of the scooter.

[0041] The folding mechanism is described below.

[0042] In some embodiments, Figure 2 As shown, the second folding seat 20 has a connecting shaft seat 21, and the connecting shaft assembly 30 is rotatably arranged on the connecting shaft seat 21. By setting the connecting shaft assembly 30, it can be ensured that the nut locking part 40 and the wrench locking part 50 are both connected to the connecting shaft assembly 30, but the connection modes of the nut locking part 40 and the wrench locking part 50 and the connecting shaft assembly 30 are different.

[0043] In some embodiments, Figures 2 to 5 As shown, the connection end of the wrench locking part 50 is sleeved on the connecting shaft assembly 30 and rotates synchronously with the connecting shaft assembly 30. The nut locking part 40 and the end of the wrench locking part 50 away from the connecting shaft assembly 30 are both used to lock the first folding seat 10. The nut locking part 40 has a mounting hole 41, and at least a part of the connecting shaft assembly 30 is located in the mounting hole 41. By arranging the limiting abutment part 60 between the mounting hole 41 and the connecting shaft assembly 30, after the wrench locking part 50 is unlocked relative to the first folding seat 10 and flipped open to a preset angle, the limiting abutment part 60 is triggered to make the connecting shaft assembly 30 drive the nut locking part 40 to rotate, so that the nut locking part 40 releases the lock on the first folding seat 10.

[0044] Compared with the movement form in which the wrench locking part 50 and the connecting shaft assembly 30 rotate synchronously, the connecting shaft assembly 30 can not only rotate a certain angle relative to the nut locking part 40, but also drive the nut locking part 40 to rotate synchronously, and the realization of this movement mode mainly depends on the limiting abutment part 60. When the lock between the nut locking part 40 and the first folding seat 10 is released, the connecting shaft assembly 30 can be driven to rotate by rotating the wrench locking part 50. After the wrench locking part 50 rotates to a certain angle, the limiting abutment part 60 is triggered, so that the limiting abutment part 60 transmits the rotation trend of the connecting shaft assembly 30 to the nut locking part 40, so that the connecting shaft assembly 30 can rotate with the nut locking part 40 to realize the unlocking between the nut locking part 40 and the first folding seat 10.

[0045] In the above process, the limiting abutment portion 60 is located between the mounting hole 41 and the connecting shaft assembly 30, and the wrench locking portion 50 does not directly contact the nut locking portion 40. Even if used for a long time, the coating on the outer peripheral side of the nut locking portion 40 will not be worn or rusted due to the protruding structure on the wrench locking portion 50 (the protruding structure in the prior art has been cancelled in this scheme), thereby improving the service life of the nut locking portion 40.

[0046] In some embodiments, the preset angle is greater than 10 degrees and less than 45 degrees. By designing the preset angle to be between 10 degrees and 45 degrees, the limit abutment portion 60 can be triggered more quickly and labor-savingly.

[0047] Specifically, the rotation angle can facilitate the user to apply downward pressure to the wrench locking portion 50. Figure 1 As shown, when the wrench locking portion 50 is in a locked state with the first folding seat 10 and the second folding seat 20, it remains vertical. When the wrench locking portion 50 is rotated 45 degrees, there is more operating space between the wrench locking portion 50 and the first folding seat 10, which is convenient for unlocking and applying force. Of course, as long as it can be ensured that the force is finally transmitted to the nut locking portion 40 through the connecting shaft assembly 30, it will be fine.

[0048] In order to realize that the connecting shaft assembly 30 and the nut locking part 40 can switch during the relative rotation or synchronous rotation, the limiting abutment part 60 has a limiting state and a non-limiting state. When the limiting abutment part 60 is in the limiting state, the connecting shaft assembly 30 drives the nut locking part 40 to rotate synchronously. When the limiting abutment part 60 is in the non-limiting state, the connecting shaft assembly 30 and the nut locking part 40 can rotate relative to each other. By operating the wrench locking part 50 to switch the state of the limiting abutment part 60, the nut locking part 40 can be locked and unlocked, which is simple to operate and improves the user experience.

[0049] Since the main purpose of the present invention is to provide a technical solution to reduce damage and corrosion of the nut locking portion 40, in addition to changing the position of the limiting abutment portion 60, the specific structural improvement of the folding mechanism is also very important.

[0050] In some embodiments, Figures 2 to 5 As shown, the connecting shaft assembly 30 includes a connecting shaft 31, an eccentric wheel 32 and a reset member 33. The connecting end of the wrench locking portion 50 is sleeved on the connecting shaft 31 and rotates synchronously with the connecting shaft assembly 30. Figure 3As shown, the connecting shaft 31 is a flat shaft, so the connecting end of the wrench locking part 50 is sleeved on the flat shaft, which can ensure that the wrench locking part 50 rotates synchronously with the connecting shaft 31. The connecting shaft 31 passes through the connecting shaft seat 21 and the eccentric wheel 32, and the rotating shaft 70 passes through the rotating shaft seat 22 to connect the first folding seat 10 and the second folding seat 20. The connecting shaft seat 21 and the rotating shaft seat 22 are arranged on the second folding seat 20, and the two are located in the same straight line, so that one end of the first folding seat 10 and the second folding seat 20 forms a locking end, and the other end forms a pivot end.

[0051] In addition, the two ends of the reset member 33 abut against the second folding seat 20 and the nut locking portion 40 respectively. By providing the reset member 33, the nut locking portion 40 can be driven to reset, simplifying the operation steps and saving time for folding or opening the folding mechanism. Figure 3 For example, the reset member 33 is mainly used to keep the nut locking portion 40 in Figure 3 The nut locking part 40 has a counterclockwise rotation tendency, so that when the wrench locking part 50 is not pressed down, it can keep close to the first folding seat 10 and keep locking the first folding seat 10. The process of pressing down the wrench locking part 50 and causing the nut locking part 40 to unlock with the first folding seat 10 is to overcome the work of the reset member 33. Therefore, once the external force disappears, the reset member 33 can drive the nut locking part 40 to reset quickly, so that the limit abutment part 60 returns to the initial state, and the connecting shaft assembly 30 and the nut locking part 40 generate relative movement again, instead of continuing to move synchronously.

[0052] In some embodiments, Figures 2 to 5 As shown, the connecting shaft 31 connects the wrench locking portion 50 and the eccentric wheel 32 so that the wrench locking portion 50 can be rotated to drive the eccentric wheel 32 to rotate, thereby triggering the limiting abutment portion 60 to release the locking state of the nut locking portion 40. The eccentric wheel 32 is eccentrically arranged on the connecting shaft 31, and the eccentric wheel 32 can be accommodated in the mounting hole 41. The limiting abutment portion 60 is arranged at the matching position of the eccentric wheel 32 and the mounting hole 41.

[0053] In some embodiments, Figure 2 As shown, the connecting shaft seat 21 is composed of two extending arms, and a hole structure is reserved on the extending arms to facilitate the passing of the connecting shaft 31. The eccentric wheel 32 and the nut locking portion 40 are arranged between the two extending arms, which can not only ensure the stability of the assembly, but also can shield the limiting abutment portion 60 through the two extending arms, thereby reducing the probability of the mounting hole 41 being damaged and corroded.

[0054] In some embodiments not shown in the figures, the inner wall of the mounting hole 41 is coated with a wear-resistant layer.

[0055] In some embodiments, the limiting abutment 60 is disposed at the distal end of the eccentric wheel 32. The limiting abutment 60 is disposed near the second folding seat 20 relative to the first folding seat 10. By arranging the limiting abutment 60 near the second folding seat 20, the space of the folding mechanism can be reasonably utilized. At the same time, arranging the limiting abutment 60 at the distal end of the eccentric wheel 32 can also increase the torque, which is convenient for unlocking. At the same time, from a structural point of view, at the distal end of the eccentric wheel 32, the wall thickness of the structure is thicker and can also have sufficient strength, which is not only convenient for setting the limiting abutment 60, but also can effectively ensure the overall structural strength.

[0056] In addition to the above-mentioned changes in the position of the limiting abutment portion 60 and the specific structural improvements of the folding mechanism, the specific arrangement of the limiting abutment portion 60 is also an important improvement point.

[0057] In some embodiments, Figures 2 to 3 As shown, the limiting abutment portion 60 includes a limiting step structure 611 provided at the hole wall of the mounting hole 41 and an abutment protrusion 62 provided on the eccentric wheel 32. The abutment protrusion 62 extends along the radial direction of the eccentric wheel 32 and can contact or disengage with the limiting step structure 611. When the abutment protrusion 62 contacts the limiting step structure 611, the nut locking portion 40 can rotate synchronously with the eccentric wheel 32. When the abutment protrusion 62 disengages from the limiting step structure 611, the eccentric wheel 32 rotates relative to the nut locking portion 40.

[0058] It should be noted that Figure 3 For example, the limiting step structure 611 is a relatively important structure, especially when the abutting protrusion 62 contacts the limiting step structure 611, the rotation tendency of the eccentric wheel 32 can be transmitted to the limiting step structure 611 through the abutting protrusion 62, thereby prompting the nut locking part 40 to rotate together.

[0059] Therefore, due to the change in the position of the abutting protrusion 62 , the positional relationship between the abutting protrusion 62 and the limiting step structure 611 is also changed, thereby affecting the state of the nut locking portion 40 .

[0060] In some embodiments, Figures 2 to 3 As shown, an accommodating groove 61 is provided at the hole wall of the mounting hole 41, and the accommodating groove 61 extends a preset length along the circumferential direction of the mounting hole 41, and a limited step structure 611 is formed at the groove wall surface of the accommodating groove 61 in the extending direction, and the abutting protrusion 62 extends along the radial direction of the eccentric wheel 32 and extends into the accommodating groove 61. By opening the accommodating groove 61 in the mounting hole 41, the abutting protrusion 62 extends along the radial direction of the eccentric wheel 32.

[0061] Specifically, the limiting step structure 611 is arranged on one side of the accommodating groove 61. When the wrench locking part 50 rotates to drive the connecting shaft 31 and then the eccentric wheel 32 to rotate, the abutting protrusion 62 moves in the accommodating groove 61. After rotating by a preset angle, the abutting protrusion 62 abuts against the limiting step structure 611, thereby driving the nut locking part 40 to rotate. It should be noted that when the abutting protrusion 62 does not abut against the limiting step structure 611, even if the eccentric wheel 32 rotates, the eccentric wheel 32 only "idles", and does not drive the nut locking part 40 to rotate.

[0062] In some embodiments, the abutment protrusion 62 has a first limiting position and a non-limiting position. Figure 4 and Figure 5 For example, when the abutting protrusion 62 is in the first limiting position, the limiting abutting portion 60 abuts against the groove wall of the accommodating groove 61, so that the connecting shaft assembly 30 can drive the nut locking portion 40 to rotate together. When the abutting protrusion 62 is in the non-limiting position, the limiting abutting portion 60 releases the abutment against the groove wall of the accommodating groove 61, and the connecting shaft assembly 30 can rotate relative to the nut locking portion 40. The nut locking portion 40 is switched between the unlocked state and the locked state by moving the abutting protrusion 62 between the first limiting position and the non-limiting position, and the structure is simple and convenient for users to operate.

[0063] In some embodiments, the abutting protrusion 62 also has a second limiting position. It should be noted that the second limiting position is not necessary to actually drive the nut locking portion 40 to unlock. Figure 3 For example, when the abutting protrusion 62 is in the second limiting position, the abutting protrusion 62 is separated from the limiting step structure 611. The limiting abutting portion and the groove wall on the other side of the accommodating groove 61 are stopped, thus preventing over-movement. However, the second limiting position is not necessary, that is, the accommodating groove 61 is not necessary as Figure 3 Likewise, the right side wall of the groove must be provided.

[0064] In an embodiment shown in the figure, only the left side wall of the accommodating groove 61 may be included as the limiting step structure 611, and the right side wall (with Figure 3 For reference) the accommodating groove 61 extends and transitions to the hole wall surface of the mounting hole 41, that is, there is no "stop step" on the right side of the accommodating groove 61, and there is no second limit position mentioned above. At this time, the accommodating groove 61 does not look like a groove structure, but more like a concave portion with a limit step structure 611 on one side opened on the hole wall surface of the mounting hole 41. In other words, the limit step structure 611 is set at one end of the accommodating groove 61, and the other end of the accommodating groove 61 smoothly transitions to the hole wall surface of the mounting hole 41.

[0065] In addition to the above-mentioned setting position of the accommodating groove 61 , various replaceable implementations can be realized by changing the installation positions of the accommodating groove 61 and the abutting protrusion 62 .

[0066] In some embodiments not shown in the figures, the accommodating groove 61 is provided on the eccentric wheel 32 , and the mounting hole 41 is provided with an abutting protrusion 62 .

[0067] In some embodiments, Figures 2 to 5 As shown, the wrench locking part 50 includes a wrench body 51, a safety buckle 52 and an elastic retainer 53. A slideway 511 is provided on the wrench body 51. The safety buckle 52 is slidably arranged at the slideway 511, and the safety buckle 52 has a locking tongue 54 for locking the first folding seat 10. When the safety buckle 52 is locked with the first folding seat 10, the safety buckle 52 is at the end of the slideway 511. The elastic retainer 53 is arranged on the wrench body 51 and presses the safety buckle 52 so that the safety buckle 52 has a retaining force to be maintained at the end of the slideway 511. By setting the locking tongue 54 on the safety buckle 52 to lock with the first folding seat 10, the wrench body 51 is prevented from being opened accidentally. The setting of the elastic retainer 53 can prevent the safety buckle 52 from sliding in the slideway 511, causing the locking tongue 54 to be separated from the first folding seat 10, thereby improving the safety of the folding mechanism.

[0068] Specifically, one end of the wrench body 51 is connected to the connecting shaft seat 21 through the connecting shaft 31, and the other end is provided with a slideway 511. The safety buckle 52 and the locking tongue 54 are respectively located on both sides of the wrench body 51, and the locking tongue 54 is arranged close to the first folding seat 10. The first folding seat 10 is provided with a clamping member 12, and the clamping member 12 and the first folding seat 10 are arranged to form a gap, and the locking tongue 54 partially extends into the gap, thereby achieving the locking between the wrench body 51 and the first folding seat 10. In order to ensure the locking effect, the elastic retaining member 53 presses the safety buckle 52 to ensure the cooperation between the locking tongue 54 and the clamping member 12.

[0069] In some embodiments not shown in the figure, the reset member 33 is a torsion spring or a clip spring. The elastic retaining member 53 is a spring.

[0070] In some embodiments, Figure 2 As shown, a limit slot 11 is further provided on the first folding seat 10 , and a limit cap 42 is further provided on the top of the nut locking portion 40 to facilitate the engagement of the nut locking portion 40 with the limit slot 11 .

[0071] Specifically, the use steps of the present invention are as follows: the first folding seat 10 and the second folding seat 20 are locked by the nut locking portion 40 and the wrench locking portion 50. Figure 3When the scooter needs to be stored, the safety buckle 52 is driven upward by the fingers to slide in the slideway 511, so that the locking tongue 54 is separated from the gap between the clamping member 12 and the first folding seat 10; then the wrench body 51 is pressed downward to drive the eccentric wheel 32 to rotate through the connecting shaft 31. Since the abutting protrusion 62 is not in contact with the limiting step structure 611 at this time, only the eccentric wheel 32 rotates, and the nut locking part 40 remains stationary. Figure 4 As shown; when the wrench body 51 rotates a preset angle, the abutting protrusion 62 abuts against the limiting step structure 611, so that the nut locking portion 40 is disengaged from the limiting slot 11 under the drive of the wrench body 51, and the unlocking is completed, as shown in detail Figure 5 As shown, the first folding seat 10 and the second folding seat 20 are now connected only by the rotating shaft 70, so that the scooter is folded and stored.

[0072] The present invention has the following beneficial effects: the connecting shaft assembly 30 is partially arranged in the mounting hole 41 on the nut locking portion 40, and one end of the nut locking portion 40 is locked with the first folding seat 10. When the nut locking portion 40 and the first folding seat 10 are unlocked, the connecting shaft assembly 30 can be driven to rotate by rotating the wrench locking portion 50, thereby triggering the limiting abutment portion 60 to unlock the nut locking portion 40 and the first folding seat 10. During this process, the limiting abutment portion 60 is located between the mounting hole 41 and the connecting shaft assembly 30, and the wrench locking portion 50 does not directly press and contact with the nut locking portion 40. Even if it is used for a long time, the coating on the outer peripheral side of the nut locking portion 40 will not be worn and rusted due to the protruding structure on the wrench locking portion 50, thereby improving the service life of the nut locking portion 40.

[0073] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0074] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A folding mechanism, characterized in that: include: First folding seat; A second folding seat, the second folding seat having a connecting shaft seat; A connecting shaft assembly, wherein the connecting shaft assembly is rotatably disposed on the connecting shaft seat; A nut locking portion, wherein the nut locking portion has a mounting hole, and at least a portion of the connecting shaft assembly is located in the mounting hole; A wrench locking part, the connection end of which is sleeved on the connecting shaft assembly and rotates synchronously with the connecting shaft assembly, and the nut locking part and one end of the wrench locking part away from the connecting shaft assembly are both used to lock the first folding seat; A limiting abutment portion is arranged between the mounting hole and the connecting shaft assembly, so that after the wrench locking portion is unlocked relative to the first folding seat and flipped open to a preset angle, the limiting abutment portion is triggered to cause the connecting shaft assembly to drive the nut locking portion to rotate, so that the nut locking portion releases the lock on the first folding seat.

2. The folding mechanism according to claim 1, characterized in that: The preset angle is greater than 10 degrees and less than 45 degrees.

3. The folding mechanism according to claim 1, characterized in that: The connecting shaft assembly comprises: A connecting shaft, on which the connecting end of the wrench locking portion is sleeved and rotates synchronously with the connecting shaft assembly; An eccentric wheel is eccentrically arranged on the connecting shaft, the eccentric wheel can be accommodated in the mounting hole, and the limiting abutment portion is arranged at the matching position between the eccentric wheel and the mounting hole.

4. The folding mechanism according to claim 3, characterized in that: The connecting shaft assembly also includes a reset member, two ends of which abut against the second folding seat and the nut locking portion respectively.

5. The folding mechanism according to claim 3, characterized in that: The position-limiting abutment portion is disposed at the distal end of the eccentric wheel; and / or the position-limiting abutment portion is disposed close to the second folding seat relative to the first folding seat.

6. The folding mechanism according to claim 3, characterized in that: The position limiting abutment portion comprises: A limiting step structure provided at the hole wall of the mounting hole; An abutment protrusion extends radially along the eccentric wheel and can contact or disengage with the limiting step structure. When the abutment protrusion contacts the stopper with the limiting step structure, the nut locking portion can rotate synchronously with the eccentric wheel. When the abutment protrusion disengages from the limiting step structure, the eccentric wheel rotates relative to the nut locking portion.

7. The folding mechanism according to claim 6, characterized in that: An accommodating groove is provided on the hole wall of the mounting hole, and the accommodating groove extends a preset length along the circumference of the mounting hole, and the limiting step structure is formed on the groove wall surface of the accommodating groove in the extension direction, and the abutting protrusion extends along the radial direction of the eccentric wheel and extends into the accommodating groove.

8. The folding mechanism according to claim 7, characterized in that: The abutting protrusion has a first limiting position and a non-limiting position; When the abutment protrusion is at the first limiting position, the limiting abutment portion abuts against the groove wall of the accommodating groove, so that the connecting shaft assembly can drive the nut locking portion to rotate together; When the abutment protrusion is in the non-limiting position, the limiting abutment portion releases the abutment against the groove wall of the accommodating groove, and the connecting shaft assembly can rotate relative to the nut locking portion.

9. The folding mechanism according to claim 8, characterized in that: The abutting protrusion also has a second limiting position; When the abutting protrusion is at the second limiting position, the nut locking portion is at a position to lock the first folding seat, and the limiting abutting portion stops the groove wall on the other side of the accommodating groove.

10. The folding mechanism according to any one of claims 1 to 9, characterized in that: The wrench locking portion comprises: A wrench body, wherein a slideway is provided on the wrench body; A safety buckle, the safety buckle is slidably disposed on the slideway, the safety buckle has a locking tongue for locking the first folding seat, and the safety buckle is at the end of the slideway when the safety buckle is locked with the first folding seat; An elastic retaining member is arranged on the wrench body and presses the safety buckle so that the safety buckle has a retaining force to be retained at the end of the slideway.

11. The folding mechanism according to any one of claims 1 to 9, characterized in that: The limiting abutment portion has a limiting state and a non-limiting state. When the limiting abutment portion is in the limiting state, the connecting shaft assembly drives the nut locking portion to rotate synchronously; When the limiting abutment portion is in the non-limiting state, the connecting shaft assembly and the nut locking portion can rotate relative to each other.

12. A scooter, characterized in that: The invention comprises the folding mechanism according to any one of claims 1 to 11.

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