Handle stem locking device and folding structure applying same

Abstract

The utility model discloses a handlebar stem locking device and a folding structure applying the handlebar stem locking device, which comprise a first seat body, a second seat body hinged on the first seat body through a first rotating shaft and capable of folding and swinging relative to the first seat body, and a fixing mechanism for locking and limiting the first seat body and the second seat body, the fixing mechanism comprises a movable handle which is arranged on the first seat body in a swinging manner, a handle vertical pipe locking device which is arranged between the first seat body and the second seat body, and a movable hook which is arranged in the movable handle. The quick unlocking and locking device has the advantages that the quick unlocking and locking device is convenient and quick to use, cannot be mistakenly touched and unlocked after being locked, and is stable in locking, excellent in impact resistance and the like. And moreover, the lock cylinder is provided with the first lock tongue and the second lock tongue, so that the lock cylinder can adapt to high-strength riding and is excellent in reliability.

Description

Technical field:

[0001] The utility model relates to the technical field of bicycle handlebar stems, in particular to a handlebar stem locking device and a folding structure using the handlebar stem locking device. Background technology:

[0002] With the development and increase of fuel-powered cars and new energy vehicles, the problem of urban traffic congestion has become increasingly serious, bringing great inconvenience to people's travel and greatly increasing the time for commuting and travel. In addition, with the accelerated pace of life nowadays, bicycles, electric bicycles, power-assisted bicycles and scooters are widely used and are becoming more and more popular because of their convenience and small space.

[0003] Traditional bicycles, electric bicycles, power-assisted bicycles and scooters are mostly equipped with a support structure extending upward on the front of the vehicle, such as a frame head tube connected to the front end of the scooter base. The frame head tube can also be installed on the front of a bicycle or electric vehicle to install a front fork (for installing the front wheel) and a riser connected to the front fork. The riser is provided with a cantilever extending forward longitudinally, and the handlebar is transversely installed at the end of the cantilever away from the riser (the cantilever and the riser constitute a stem tube for installing the handlebar), so that the rider can hold and pull a pair of handles to drive the stem tube to link the front fork and the front wheel to turn left and right. In order to ensure riding safety, the stem tube needs to have a locking ability when in use, and cannot be loosened or slipped, so the fixing structure on the stem tube is particularly important.

[0004] At present, the more common stem fixing structures on the market are fixed by the way of matching the shaft hole, and the limiting edge is set on the "shaft" to match the sleeve hole to achieve the limiting effect, and finally the stem is fixed by screws on the outside of the sleeve hole. For example, the Chinese utility model patent with patent announcement number: CN 216301365 U discloses a new type of electric bicycle stem structure, which includes: a head tube and a vertical tube passing through the top of the head tube; a limiting connection structure is set on the end of the vertical tube; a stem is ringed on the limiting connection structure; the stem is detachably fixed to the limiting connection structure; the stem is detachably fixed to the vertical tube clamp. However, this existing electric bicycle stem structure is prone to aging, rusting, etc. because its locking screws are exposed to the outside, and the aging of the screws will directly affect the locking ability of the structure, resulting in the stability of the entire stem structure being affected, and even the structure will become loose and slip, and the durability is poor.

[0005] There is also a more common stem fixing structure, which achieves the fixing effect through a hoop that can tighten the stem, and is also provided with a device that can adjust the tightness of the hoop by swinging. For example, the Chinese utility model patent with patent announcement number: CN 218172447U discloses an electric bicycle stem structure and an electric vehicle, which includes: a stem tube, a quick release fixedly connected to the upper end of the stem tube, and a fastening notch is provided at the upper end of the stem tube. However, due to its own structural characteristics, this existing stem structure only has one locking structure, which is weak in strength, resulting in poor fastening performance and may cause shaking during riding.

[0006] In view of this, the inventor proposes the following technical solution. Utility model content:

[0007] The utility model aims to overcome the deficiencies of the prior art and to provide a handlebar stem locking device and a folding structure using the handlebar stem locking device.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a handlebar locking device, comprising a lock core for locking a first seat body and a second seat body together, a first transmission member with one end inserted in the lock core and used to drive the lock core to move, a first spring sleeved on the first transmission member, and a lever with one end abutting against the first transmission member and capable of driving the first transmission member to move; one end of the first spring abuts against the first seat body or the second seat body, and the other end of the first spring pushes the lock core to slide outward and firmly locks the first seat body and the second seat body; the lever comprises a first force arm sleeved on the first transmission member and abutting against the end of the first transmission member, a second force arm extending outward and connected to the first force arm, and a limiting hole arranged between the first force arm and the second force arm, in which a first shaft body is inserted.

[0009] Further, in the above technical solution, the first transmission member includes a connecting rod with one end inserted on the lock core and a connecting rod fixing seat fixed on the connecting rod and limiting the axial position of the connecting rod; a convex edge is formed at one end of the connecting rod close to the connecting rod fixing seat, and a first limiting groove matching the convex edge is formed on the connecting rod fixing seat, and the convex edge is engaged in the first limiting groove to limit the axial position of the first transmission member; the end of the first force arm has an arc surface, and a first arc-shaped groove corresponding to the first force arm is formed on the connecting rod fixing seat.

[0010] Furthermore, in the above technical solution, the connecting rod fixing seat is formed with a second arc-shaped groove on the side away from the first force arm, a through hole is formed in the second arc-shaped groove, and a clearance groove is formed at the upper end of the connecting rod fixing seat. The first limiting groove is opened from bottom to top and is formed with a limiting opening for the first transmission member rod body to pass through, and the limiting opening is U-shaped or inverted U-shaped.

[0011] Furthermore, in the above technical solution, a first through hole is provided on the lock core, and an end of the connecting rod away from the connecting rod fixing seat is formed with an axial section that is thinner than the connecting rod body, and the axial section is correspondingly inserted into the first through hole; the lock core is also provided with a second screw hole, in which an adjusting screw is spirally installed, and the upper end of the adjusting screw is against the axial section.

[0012] Furthermore, in the above technical solution, the lock core is formed with a first lock tongue and a second lock tongue protruding outward, the lower end face of the first lock tongue is formed with a guide slope and a guide bulge, and the upper end face of the first lock tongue is formed with a first locking slope and an auxiliary lock tongue; the upper end face of the second lock tongue is formed with at least two ridges protruding upward and used to prevent the lock core from accidentally sliding.

[0013] A folding structure for applying the above-mentioned handlebar tube locking device includes a first seat body, a second seat body hinged to the first seat body by a first rotating shaft and foldable and swingable relative to the first seat body, and a fixing mechanism for locking and limiting the first seat body and the second seat body, wherein the fixing mechanism includes a movable handle swingably arranged on the first seat body, the handlebar tube locking device arranged between the first seat body and the second seat body, and a movable hook arranged in the movable handle.

[0014] Furthermore, in the above technical solution, a second rotating shaft for limiting the movable hook is inserted on the movable handle, so that the movable hook swings with the second rotating shaft as the rotation center axis; a first buckling portion is formed on the second seat body, and a second buckling portion that can match the first buckling portion is formed on the lower end of the movable hook, and a reset spring for pushing the second buckling portion to buckle on the first buckling portion is arranged between the movable hook and the movable handle; a button for being pressed by a human hand and disengaging the second buckling portion from the first buckling portion is formed on the upper end of the movable hook, and a clearance position for the button to extend to the outside of the movable handle is opened on the movable handle.

[0015] Furthermore, in the above technical solution, a first hinged portion is formed on the first base body, and correspondingly, a second hinged portion is formed on the second base body, and the first rotating shaft passes through the first hinged portion and the second hinged portion.

[0016] Furthermore, in the above technical solution, a second groove is formed on the inner wall of the second seat body for the second locking tongue to be slidably inserted, and the convex edge contacts the inner wall of the second groove; a first groove is formed on the inner wall of the first seat body for the first locking tongue to be slidably inserted, and a second protrusion corresponding to the first locking inclined surface is formed on the upper wall of the first groove body, and a locking position for limiting the auxiliary locking tongue is provided in the second protrusion, and an oblique mouth corresponding to the guide inclined surface and the guide protrusion is also formed on the side of the first seat body close to the first groove body; a partition is also extended downward at the lower end of the second seat body, and a second through hole is provided on the partition for the first transmission member to pass through.

[0017] Furthermore, in the above technical solution, a rotating part and a pressing part are formed at the lower end of the movable handle, a third through hole is opened on the rotating part for the first rotating shaft to pass through, and the third through hole is eccentrically arranged, and a second arc groove corresponding to the rotating part is formed on the connecting rod fixing seat; a blocking part corresponding to the pressing part is formed at the end of the second force arm of the lever.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: the utility model utilizes the lever principle, and drives the lock core to move back and forth through the cooperation of a specially shaped lever, a first transmission member and a first spring, thereby realizing rapid unlocking and locking, and has the advantages of being convenient and quick to use, no accidental touch or opening after locking, and stable locking with good impact resistance. In addition, the lock core has two lock tongues, the first lock tongue and the second lock tongue. This locking method is superior to most of the current locking structures, can adapt to high-intensity riding, and has excellent reliability.

[0019] In addition, compared with the existing structure, the utility model is also designed with a self-locking structure composed of a movable handle and a movable hook. The movable handle covers the outer periphery of the movable hook, so that the movable hook is protected from erosion by the scorching sun, rain, etc., effectively slowing down the aging and rusting of the device, and effectively avoiding the loosening and slipping of the structure. The service life is long and durable. At the same time, the utility model has two locking structures, which greatly enhances the overall strength of the structure and meets the market demand. Description of the drawings:

[0020] Figure 1 It is a three-dimensional diagram of the handlebar locking device in the utility model;

[0021] Figure 2 It is an exploded schematic diagram of the handlebar locking device in the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the utility model;

[0023] Figure 4 It is a cross-sectional view of the utility model;

[0024] Figure 5 yes Figure 4 A magnified view at point A;

[0025] Figure 6 It is a schematic diagram of the use state of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the lock core in the utility model;

[0027] Figure 8 It is a structural schematic diagram of the movable hook in the utility model;

[0028] Fig. 9It is a schematic diagram of the assembly of the utility model and the riser;

[0029] Fig.10 It is a structural schematic diagram of the connecting rod fixing seat in the utility model;

[0030] Fig.11 It is a structural schematic diagram of the first seat body in the utility model. Specific implementation method:

[0031] The utility model is further described below in conjunction with specific embodiments and drawings.

[0032] See Figures 1 to 11 As shown, a handlebar locking device includes a lock core 30, a first transmission member 31 with one end inserted in the lock core 30 and used to drive the lock core 30 to move, a first spring 32 mounted on the first transmission member 31 and used to push the lock core 30 to slide outward, and a lever 34 with one end abutting against the first transmission member 31 and capable of driving the first transmission member 31 to move; the lever 34 includes a first force arm 341 mounted on the first transmission member 31 and abutting against the end of the first transmission member 31, a second force arm 342 extending outward and connected to the first force arm 341, and a limiting hole 343 disposed between the first force arm 341 and the second force arm 342, wherein a first shaft body is inserted into the limiting hole 343. The first shaft body is fixed and is the fulcrum of the lever 34, so that the first force arm 341 and the second force arm 342 can swing with the first shaft body as the rotation center axis. In this embodiment, the cross-sectional shape of the lever 34 is L-shaped or inverted L-shaped, and the preferred bending angle between the first force arm 341 and the second force arm 342 is 90°-120°.

[0033] The first transmission member 31 includes a connecting rod 35 with one end inserted on the lock core 30 and a connecting rod fixing seat 33 fixed on the connecting rod 35 and limiting the axial position of the connecting rod 35; a convex edge 351 is formed at one end of the connecting rod 35 close to the connecting rod fixing seat 33, and a first limiting groove 330 matching the convex edge 351 is formed on the connecting rod fixing seat 33, and the convex edge 351 is engaged in the first limiting groove 330 to limit the axial position of the first transmission member 31; the end of the first force arm 341 has an arc surface, and a first arc groove 331 corresponding to the first force arm 341 is formed on the connecting rod fixing seat 33. Because the utility model is to realize that when the lever 34 is toggled, the lever 34 will drive the first transmission member 31 and the lock core 30 to move backward, so that the lock core 30 reaches the unlocked state, and the first spring 32 will push the lock core 30, so that the lock core 30 returns to the locked state.

[0034] The lock core 30 is provided with a first through hole 301, and an end of the connecting rod 35 away from the connecting rod fixing seat 33 is formed with an axial section 352 that is thinner than the rod body of the connecting rod 35, and the axial section 352 is correspondingly inserted into the first through hole 301; the lock core 30 is also provided with a second screw hole 302, and an adjusting screw 303 is spirally installed in the second screw hole 302, and the upper end of the adjusting screw 303 is against the axial section 352.

[0035] Specifically, when the blocking portion 344 on the second force arm 342 is pressed down by the pressing portion 55 of the movable handle 5, the first force arm 341 synchronously swings around the first shaft body as the center axis, thereby driving the connecting rod fixing seat 33 and the connecting rod 35, and since the lock core 30 is fixed to the shaft body section 352 of the connecting rod 35 by the adjusting screw 303, the lock core 30 will be driven to move backward synchronously and compress the first spring 32, and it is now in an unlocked state. Further, the first spring 32 will act between the partition 23 of the second seat body 2 and the lock core 30, so that the lock core 30 has a tendency to move away from the partition 23. Further, when the pressing portion 55 of the movable handle 5 no longer presses the second force arm 342, the lock core 30 is returned to its original position by the action of the first spring 32 and restored to a locked state.

[0036] The connecting rod fixing seat 33 is formed with a second arc groove 332 on the side away from the first force arm 341, and a through hole 3321 is formed in the second arc groove 332. A clearance groove 333 is formed at the upper end of the connecting rod fixing seat 33. The first limiting groove 330 is opened from bottom to top and is formed with a limiting opening 334 for the rod body of the first transmission member 31 to pass through, and the limiting opening 334 is U-shaped or inverted U-shaped.

[0037] The lock core 30 is formed with a first lock tongue 310 and a second lock tongue 320 protruding outward, the lower end surface of the first lock tongue 310 is formed with a guide slope 311 and a guide protrusion 312, and the upper end surface of the first lock tongue 310 is formed with a first locking slope 313 and an auxiliary lock tongue 314; the upper end surface of the second lock tongue 320 is formed with at least two convex ridges 322 protruding upward and used to prevent the lock core 30 from accidentally sliding. Specifically, when the device is in a locked state, the first locking bevel 313 and the second protrusion 1011 press against each other. Since the combined structure of the bevel and the bevel is easily displaced when subjected to a violent impact, it is difficult to ensure installation in a riding state. Therefore, in this embodiment, an auxiliary lock tongue 314 is added. Through the cooperation between the auxiliary lock tongue 314 and the locking position 1012, when the device is subjected to a violent impact in the locked state, the auxiliary lock tongue 314 will press against the locking position 1012, thereby increasing the friction force and avoiding displacement between the first locking bevel 313 and the second protrusion 1011, thereby greatly improving the stability of the structure.

[0038] A folding structure for applying the above-mentioned handlebar locking device comprises a first seat body 1, a second seat body 2 hinged to the first seat body 1 through a first rotating shaft 4 and capable of folding and swinging relative to the first seat body 1, and a fixing mechanism 6 for locking and limiting the first seat body 1 and the second seat body 2, wherein the fixing mechanism 6 comprises a movable handle 5 swingably arranged on the first seat body 1, a handlebar locking device arranged between the first seat body 1 and the second seat body 2, and a movable hook 50 arranged in the movable handle 5;

[0039] The movable handle 5 is provided with a second rotating shaft 51 for limiting the position of the movable hook 50, so that the movable hook 50 can swing with the second rotating shaft 51 as the rotation center axis; the second seat body 2 is formed with a first buckling portion 21, and the lower end of the movable hook 50 is formed with a second buckling portion 502 that can match the first buckling portion 21, and a return spring 52 is provided between the movable hook 50 and the movable handle 5 for pushing the second buckling portion 502 to buckle with the first buckling portion 21; the upper end of the movable hook 50 is formed with a button 503 for a human hand to press and disengage the second buckling portion 502 from the first buckling portion 21, and the movable handle 5 is provided with a clearance position 54 for the button 503 to extend out of the movable handle 5. Specifically, see Figure 4-Figure 8 As shown, the movable hook 50 is formed with a second through hole 504 for the second rotating shaft 51 to pass through, and the second through hole 504 is opened in the middle of the movable hook 50 to facilitate transmission; the lower end of the movable hook 50 is also provided with a fifth groove 505, and one end of the reset spring 52 is against the fifth groove 505 to prevent the reset spring 52 from deflecting. Figure 5 and Fig.10 As shown, when the movable handle 5 is unlocked and swung, it will drive the movable hook 50 to move synchronously, and the avoidance position 54 is used to avoid the second buckling portion 502 of the movable hook 50 to prevent collision or wear inside the device.

[0040] The first base body 1 is formed with a first hinged portion 11, and correspondingly, the second base body 2 is formed with a second hinged portion 22, and the first rotating shaft 4 passes through the first hinged portion 11 and the second hinged portion 22. Fig. 9 As shown, a stand pipe 8 can also be connected to the second seat body 2. In practical application, stand pipes 8 of different sizes and lengths can be selected according to actual needs.

[0041] The inner wall of the second seat body 2 is formed with a second groove body 202 for the second locking tongue 320 to be slidably inserted, and the convex ridge 322 contacts the inner wall of the second groove body 202; the inner wall of the first seat body 1 is formed with a first groove body 101 for the first locking tongue 310 to be slidably inserted, and the upper wall of the first groove body 101 is formed with a second protrusion 1011 corresponding to the first locking inclined surface 313, and a locking position 1012 for limiting the auxiliary locking tongue 314 is provided in the second protrusion 1011, and the first seat body 1 is also formed with an inclined mouth 102 corresponding to the guide inclined surface 311 and the guide protrusion 312 on the side close to the first groove body 101; the lower end of the second seat body 2 is also extended downward to form a partition part 23, and the partition part 23 is provided with a second through hole 231 for the first transmission member 31 to pass through. Specifically, when performing the locking operation, the guide bevel 311 and the guide protrusion 312 on the first lock tongue 310 will first contact the bevel 102 on the first seat body 1. At this time, a downward force needs to be manually applied to cause the lock core 30 to be retracted inward through the bevel action between the bevel 102 and the guide bevel 311 and the guide protrusion 312, and squeeze the first spring 32 until the first lock tongue 310 slides to align with the first slot 101, and the first spring 32 is released and pushes the lock core 30 to complete the locking.

[0042] In this embodiment, the first shaft body is a fixed shaft 235 disposed at the lower end of the partition portion 23 .

[0043] The lower end of the movable handle 5 is formed with a rotating portion 56 and a pressing portion 55. The rotating portion 56 is provided with a third through hole 53 for the first rotating shaft 4 to pass through, and the third through hole 53 is eccentrically arranged. The connecting rod fixing seat 33 is formed with a second arc groove 332 corresponding to the rotating portion 56; the end of the second force arm 342 of the lever 34 is formed with a blocking portion 344 corresponding to the pressing portion 55. Specifically, see Figure 6 As shown, after the button 503 is pressed to drive the second buckling portion 502 to disengage from the first buckling portion 21, the handlebar locking device is still in a locked state. This is to avoid accidents caused by the movable hook 50 being loosened and the handlebar being loosened due to accidental touch during riding. Therefore, to unlock the handle, the movable handle 5 must be further moved downward, and the blocking portion 344 of the second force arm 342 is pressed down by the pressing portion 55 of the movable handle 5, so that the lever 34 swings and drives the connecting rod 35 and the lock core 30 to move, until the first lock core 310 is separated from the second protrusion 1011, and the unlocking is finally completed.

[0044] In summary, the utility model utilizes the lever principle, and drives the lock core 30 to move back and forth through the cooperation of the specially shaped lever 34, the first transmission member 31 and the first spring 32, so as to achieve rapid unlocking and locking, and has the advantages of convenient and quick use, no accidental touch or opening after locking, stable locking and good impact resistance, etc. In addition, the lock core 30 has two lock tongues, the first lock tongue 310 and the second lock tongue 320. This locking method is superior to most of the current locking structures, can adapt to high-intensity riding, and has excellent reliability.

[0045] In addition, compared with the existing structure, the utility model is also designed with a self-locking structure composed of a movable handle 5 and a movable hook 50. The movable handle 5 covers the outer periphery of the movable hook 50 to protect the movable hook 50 from erosion by the sun, rain, etc., effectively slowing down the aging and rusting of the device, and effectively avoiding the loosening and slipping of the structure, with a long service life and durability. At the same time, the utility model has two locking structures, which greatly enhances the overall strength of the structure and meets the needs of the market.

[0046] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A handlebar locking device, characterized in that: The invention comprises a lock core (30) for locking a first base (1) and a second base (2) together, a first transmission member (31) having one end inserted into the lock core (30) and used for driving the lock core (30) to move, a first spring (32) sleeved on the first transmission member (31), and a lever (34) having one end abutting against the first transmission member (31) and capable of driving the first transmission member (31) to move; One end of the first spring (32) abuts against the first seat body (1) or the second seat body (2), and the other end of the first spring (32) pushes the lock core (30) to slide outward and firmly lock the first seat body (1) and the second seat body (2); The lever (34) comprises a first force arm (341) sleeved on the first transmission member (31) and resting against the end of the first transmission member (31), a second force arm (342) extending outward and connected to the first force arm (341), and a limiting hole (343) arranged between the first force arm (341) and the second force arm (342), wherein a first shaft body is inserted into the limiting hole (343).

2. A handlebar locking device according to claim 1, characterized in that: The first transmission member (31) comprises a connecting rod (35) having one end inserted on the lock core (30) and a connecting rod fixing seat (33) fixed on the connecting rod (35) and axially limiting the connecting rod (35); a convex edge (351) is formed on one end of the connecting rod (35) close to the connecting rod fixing seat (33), and a first limiting groove (330) matching the convex edge (351) is formed on the connecting rod fixing seat (33), and the convex edge (351) is engaged in the first limiting groove (330) to axially limit the first transmission member (31); the end of the first force arm (341) has an arc surface, and a first arc-shaped groove (331) corresponding to the first force arm (341) is formed on the connecting rod fixing seat (33).

3. A handlebar locking device according to claim 2, characterized in that: The connecting rod fixing seat (33) is formed with a second arc groove (332) on a side away from the first force arm (341), and a clearance groove (333) is formed at the upper end of the connecting rod fixing seat (33). The first limiting groove (330) is formed from bottom to top and is formed with a limiting opening (334) for the rod body of the first transmission member (31) to pass through, and the limiting opening (334) is U-shaped or inverted U-shaped.

4. A handlebar locking device according to claim 2, characterized in that: The lock core (30) is provided with a first through hole (301), and an end of the connecting rod (35) away from the connecting rod fixing seat (33) is formed with an axial body section (352) thinner than the rod body of the connecting rod (35), and the axial body section (352) is correspondingly inserted into the first through hole (301); the lock core (30) is also provided with a second screw hole (302), and an adjusting screw (303) is spirally installed in the second screw hole (302), and the upper end of the adjusting screw (303) is against the axial body section (352).

5. The handlebar locking device according to claim 2, characterized in that: The lock core (30) is formed with a first lock tongue (310) and a second lock tongue (320) protruding outwards; a guide inclined surface (311) and a guide convex portion (312) are formed on the lower end surface of the first lock tongue (310); a first locking inclined surface (313) and an auxiliary lock tongue (314) are formed on the upper end surface of the first lock tongue (310); and at least two convex ridges (322) protruding upwards and used to prevent the lock core (30) from accidentally sliding are formed on the upper end surface of the second lock tongue (320).

6. A folding structure for a handlebar locking device according to any one of claims 2 to 5, comprising a first seat body (1), a second seat body (2) hinged to the first seat body (1) via a first rotating shaft (4) and capable of folding and swinging relative to the first seat body (1), and a fixing mechanism (6) for locking and limiting the first seat body (1) and the second seat body (2), characterized in that: The fixing mechanism (6) comprises a movable handle (5) arranged on the first seat body (1) in a swingable manner, the handlebar stem locking device arranged between the first seat body (1) and the second seat body (2), and a movable hook (50) arranged in the movable handle (5).

7. The folding structure according to claim 6, characterized in that: The movable handle (5) is provided with a second rotating shaft (51) for limiting the position of the movable hook (50), so that the movable hook (50) swings with the second rotating shaft (51) as the rotation center axis; a first buckling portion (21) is formed on the second base body (2); a second buckling portion (502) that can match the first buckling portion (21) is formed on the lower end of the movable hook (50); a return spring (52) for pushing the second buckling portion (502) to buckle with the first buckling portion (21) is provided between the movable hook (50) and the movable handle (5); a button (503) for being pressed by a human hand to make the second buckling portion (502) disengage from the first buckling portion (21) is formed on the upper end of the movable hook (50); and a clearance position (54) for the button (503) to extend outward from the movable handle (5) is provided on the movable handle (5).

8. The folding structure according to claim 6, characterized in that: The second seat body (2) is formed with a second groove body (202) on the inner wall thereof for the second locking tongue (320) to be slidably inserted, and the convex ridge (322) contacts the inner wall of the second groove body (202); the first seat body (1) is formed with a first groove body (101) on the inner wall thereof for the first locking tongue (310) to be slidably inserted, and the upper wall of the first groove body (101) is formed with a second protrusion (1011) corresponding to the first locking inclined surface (313), and the second protrusion (1011) is formed on the upper wall thereof. 1011) is provided with a locking position (1012) for limiting the auxiliary locking tongue (314); a side of the first seat body (1) close to the first groove body (101) is also formed with an oblique opening (102) corresponding to the guiding inclined surface (311) and the guiding protrusion (312); the lower end of the second seat body (2) is also extended downward to form a partition (23), and the partition (23) is provided with a second through hole (231) for allowing the first transmission member (31) to pass through.

9. The folding structure according to claim 6, characterized in that: A rotating portion (56) and a pressing portion (55) are formed at the lower end of the movable handle (5); a third through hole (53) is formed on the rotating portion (56) for the first rotating shaft (4) to pass through, and the third through hole (53) is eccentrically arranged; a second arc groove (332) corresponding to the rotating portion (56) is formed on the connecting rod fixing seat (33); and a blocking portion (344) corresponding to the pressing portion (55) is formed at the end of the second force arm (342) of the lever (34).

10. The folding structure according to any one of claims 6 to 9, characterized in that: A first hinged portion (11) is formed on the first base body (1), and correspondingly, a second hinged portion (22) is formed on the second base body (2), and the first rotating shaft (4) passes through the first hinged portion (11) and the second hinged portion (22).

Images