Frame folding and locking structure

Abstract

The utility model discloses a frame folding locking structure which comprises a first seat body, a second seat body and a fixing device, the first seat body is hinged to the second seat body so that the second seat body can swing relative to the first seat body in a folding mode, and the fixing device comprises a pull rod, a movable handle, a locking block and a rotating plug pin. A receding groove used for containing the upper end of the movable handle is formed in the second base body. According to the utility model, a fixing device is formed by two locking structures that the movable handle and the pull rod are matched with the locking block and the rotating bolt is matched with the movable handle, so that the overall strength is improved; the locking structure is simple and reliable in structure, not only suitable for various scooter folding boxes, but also applicable to folding handlebar stem locking structures of bicycles and scooters. In addition, the upper end portion of the movable handle can be contained in the receding groove, the flatness is effectively improved, the movable handle is prevented from being accidentally touched and opened, the interior can be prevented from being eroded by burning sun and rainwater, the service life is long, and durability is achieved.

Description

Technical Field:

[0001] The utility model relates to the technical field of scooter folding, in particular to a frame folding box and a folding handlebar locking structure. Background Art:

[0002] The folding box is the main structure in a folding vehicle. For a folding vehicle, the importance of the folding box is just like that of joints in the human body. Since there are generally multiple folding positions in a folding vehicle, once the structure of the frame itself is not stable, it is easy to cause accidental folding of the frame during riding, which is prone to danger. Therefore, the folding vehicle has relatively high requirements for the overall stability of the frame during riding. To ensure riding safety, the "joint" of the frame needs to have a locking ability in the use state, and there should be no loosening or slipping phenomenon. Therefore, the folding box fixing structure is particularly important.

[0003] Currently, there is a relatively common frame folding structure on the market, which can fold the frame as needed during use. For example, the Chinese invention patent application with the patent publication number CN 104943797 A discloses a frame folding structure of a scooter, which includes: a frame body, a groove body is formed at the upwardly warped part at the front end of the frame body, the front section of the frame is rotatably connected to the lower end of the groove body, after the front section of the frame is closed downward and placed in the groove body, a frame head tube is fixed at the outer end of the front section of the frame, a handle locking device is arranged inside the front section of the frame, and a locking groove matched with the lock rod of the handle locking device is arranged in the groove body. It can fold the frame of the scooter as needed during use for easy carrying. At the same time, anti-slip patterns are arranged on the surface of the frame body to ensure the use safety of users and prevent them from slipping off the vehicle body.

[0004] However, this existing frame folding structure still has the following deficiencies:

[0005] 1. In this technical solution, there is only one locking structure with the cooperation of the lock rod 14 and the locking groove 15. To convert it from the working state to the folding state, only need to pull the handle 6 upward, which drives the lock rod 14 to disengage from the locking groove 15, and then the front section of the frame 11 can be lifted. Such a structure with only one lock rod has insufficient safety. It is easy to accidentally disengage the lock rod 14 from the locking groove 15 due to accidental touch or bump during riding, resulting in loosening and slipping of the structure, which is extremely dangerous to the users.

[0006] 2. In this technical solution, there is no part on the frame for accommodating the handle 6, and the handle 6 is exposed outside, making the overall flatness not high. This further increases the risk of accidental unlocking caused by accidentally touching the handle 6. The handle 6 should be accommodated in the frame, which is not only beautiful but also can enhance safety.

[0007] In view of this, the inventor proposes the following technical solution. Utility model content:

[0008] The utility model aims to overcome the deficiencies of the prior art and provide a frame folding and locking structure.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions: a frame folding locking structure, comprising: a first seat body, a second seat body and a fixing device for locking or unlocking the first seat body and the second seat body, the first seat body and the second seat body are hinged so that the first seat body can be folded and swung relative to the second seat body, and the fixing device comprises: a pull rod passing through the first seat body, a movable handle hingedly arranged at one end of the pull rod and capable of driving the pull rod to perform telescopic movement, a locking block fixed to the other end of the pull rod and driven by the pull rod, and a rotating pin rotatably arranged on the second seat body and used to rotate and lock the movable handle, and a avoidance groove for accommodating the upper end of the movable handle is formed on the second seat body.

[0010] Furthermore, in the above technical solution, the locking block is respectively protruded with a first plug-in shaft and a second plug-in shaft which are distributed laterally, the first seat body is provided with a first slot for inserting and fixing the first plug-in shaft, the second seat body is provided with a second slot for inserting and fixing the second plug-in shaft, and the length of the first plug-in shaft is greater than the length of the second plug-in shaft.

[0011] Furthermore, in the above technical solution, the locking block is also concavely formed with a first groove and a second groove, respectively, and correspondingly, the first seat body is convexly formed with a first convex portion and a second convex portion for respectively extending into the first groove and the second groove, and the second seat body is convexly formed with a third convex portion and a fourth convex portion for respectively extending into the first groove and the second groove.

[0012] Furthermore, in the above technical solution, a hand buckle portion is formed on the upper end of the movable handle for being turned by a human hand, and a locking ear portion is provided on the inner side of the hand buckle portion for the rotating pin to be rotated and locked, and the rotating pin is protrudingly formed with a pin portion which is bent and matches the locking ear portion, and the rotating pin is also protrudingly formed with an unlocking paddle portion for being turned and unlocked by a human hand.

[0013] Furthermore, in the above technical solution, a spring is sleeved on the pull rod for pushing the locking block outward, a first hinge is fixed to one end of the pull rod, and correspondingly, the movable handle is formed with a second hinge hole that matches and is hinged to the first hinge, and the second hinge hole is eccentrically arranged.

[0014] Furthermore, in the above technical solution, a first sunk groove for the draw rod to pass through is formed on the first seat body, and a limiting portion for limiting the draw rod is provided on the first seat body at the first sunk groove; a blocking portion is further formed on the first seat body, the blocking portion has a curved surface matching the movable handle, and the lower end portion of the movable handle abuts against the blocking portion, and a lubricating sheet for making the movable handle swing smoothly is further provided on the blocking portion.

[0015] Furthermore, in the above technical solution, a first sleeve portion for installing the rotating pin is provided in the avoidance groove, the rotating pin is installed on the first sleeve portion through a first pin, and a torsion spring for driving the rotating pin to rotate and lock is sleeved on the first sleeve portion.

[0016] Furthermore, in the above technical solution, a first torsion spring hole is further formed on the second seat body beside the first sleeve portion, a second torsion spring hole is formed on the rotating pin, one end of the torsion spring is integrally formed with a first insertion end inserted into the first torsion spring hole, and the other end of the torsion spring is integrally formed with a second insertion end inserted into the second torsion spring hole to drive the rotating pin to rotate and lock with the first sleeve portion as the rotation center axis.

[0017] Furthermore, in the above technical solution, a third hinge member and a fourth hinge member are respectively provided on the first seat body, and correspondingly, a fifth hinge hole and a sixth hinge hole for respectively hinging with the third hinge member and the fourth hinge member are formed on the second seat body.

[0018] Furthermore, in the above technical solution, the locking block is installed on the draw rod through a screw, and a positioning hole is formed on the locking block, and a positioning pin for positioning the screw is inserted into the positioning hole.

[0019] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art: In the present utility model, a fixing device is composed of two locking structures of the movable handle and the draw rod cooperating with the locking block, and the rotating pin cooperating with the movable handle, which greatly improves the locking effect. And even if the rotating pin is accidentally toggled to unlock the movable handle, the locking block will still not be unlocked. It is necessary to further apply a certain force to the movable handle to make it swing downward and drive the draw rod to push the locking block to unlock before unlocking can be completed, which improves the overall strength; and the structure is simple and reliable. It is not only applicable to various folding boxes of scooters, but this structure can also be applied to the folding handle locking structures of bicycles and scooters. In addition, compared with the existing structure, when the present utility model is locked, the upper end portion of the movable handle can be received into the avoidance groove, and the whole is in a square box shape after receiving, effectively improving the flatness, avoiding accidental opening of the movable handle by accidental touch, and also protecting the interior from being eroded by the sun, rain, etc., with a long service life and being durable. Description of the Drawings:

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the unlocked state of the utility model;

[0023] Figure 4 It is a schematic diagram of the exploded structure of another viewing angle in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the rotating latch in the utility model;

[0025] Figure 6 It is a structural schematic diagram of the torsion spring in the utility model. Specific implementation method:

[0026] The utility model is further described below in conjunction with specific embodiments and drawings.

[0027] See Figures 1 to 6 As shown, a frame folding locking structure is provided, which comprises: a first seat body 1, a second seat body 2 and a fixing device 3 for locking or unlocking the first seat body 1 and the second seat body 2. The first seat body 1 and the second seat body 2 are hinged so that the first seat body 1 can be folded and swung relative to the second seat body 2. The fixing device 3 comprises: a pull rod 31 passing through the first seat body 1, a movable handle 32 hingedly provided at one end of the pull rod 31 and capable of driving the pull rod 31 to telescopically move, a locking block 33 fixed at the other end of the pull rod 31 and driven by the pull rod 31, and a rotating latch 34 rotatably provided on the second seat body 2 and used for rotating and locking the movable handle 32.

[0028] In the utility model, the fixing device 3 is formed by two locking structures, namely, the movable handle 32 and the pull rod 31 cooperate with the locking block 33, and the rotating latch 34 cooperates with the movable handle 32, which greatly improves the locking effect. Moreover, even if the rotating latch 34 is accidentally turned to unlock the movable handle 32, the locking block 33 will not be unlocked. It is necessary to further apply a certain force to the movable handle 32 to make it swing downward and drive the pull rod 31 to push the locking block 33 to unlock, so as to complete the unlocking, thereby improving the overall strength. Moreover, the structure is simple and reliable, and is not only suitable for various types of scooter folding boxes, but also can be applied to the folding handlebar locking structure of bicycles and scooters. In addition, compared with the existing structure, when the utility model is locked, the upper end of the movable handle 32 can be stored in the avoidance groove 201, and the whole is in a square box shape after storage, which effectively improves the flatness, avoids the movable handle 32 from being accidentally opened by accident, and can also protect the interior from erosion by the sun, rain, etc., and has a long service life and is durable.

[0029] The locking block 33 is respectively protruded with a first plug-in shaft 331 and a second plug-in shaft 332 that are distributed laterally. The first seat body 1 is provided with a first slot 131 for the first plug-in shaft 331 to be inserted and fixed, and the second seat body 2 is provided with a second slot 132 for the second plug-in shaft 332 to be inserted and fixed, and the length of the first plug-in shaft 331 is greater than the length of the second plug-in shaft 332. Here, the second plug-in shaft 332 of the locking block 33 is inserted into the second slot 132 to lock the second seat body 2. When unlocking is required, the movable handle 32 is pushed downward and pressed down to drive the pull rod 31 to push the locking block 33 to move outward until the second plug-in shaft 332 is disengaged from the second slot 132, that is, the unlocking is completed. At this time, since the length of the first plug-in shaft 331 is greater than the length of the second plug-in shaft 332, the first plug-in shaft 331 is still inserted in the first slot 131, and guides the locking block 33 to prevent the locking block 33 from completely disengaging from the first seat body 1.

[0030] The locking block 33 is also concavely formed with a first groove 333 and a second groove 334, and correspondingly, the first seat body 1 is convexly formed with a first convex portion 133 and a second convex portion 134 for respectively extending into the first groove 333 and the second groove 334, and the second seat body 2 is convexly formed with a third convex portion 135 and a fourth convex portion 136 for respectively extending into the first groove 333 and the second groove 334. Here, the first convex portion 133 and the third convex portion 135 are jointly matched in the first groove 333, and the second convex portion 134 and the fourth convex portion 136 are jointly matched in the second groove 334, so as to further enhance the stability of locking.

[0031] The movable handle 32 has a hand buckle 321 formed on the upper end thereof for being turned by a human hand, and a locking ear 322 is provided on the inner side of the hand buckle 321 for the rotating latch 34 to be rotated and locked. The rotating latch 34 has a protruding pin portion 341 that is bent and matches the locking ear 322, and the rotating latch 34 also has a protruding unlocking paddle portion 342 that is turned and unlocked by a human hand. Here, the latch portion 341 has an outward inclined surface, and the hand button portion 321 can be swung and stored in the avoidance groove 201, and when the rotating latch 34 is in a locked state, the unlocking paddle portion 342 is not exposed from the hand button portion 321, which can effectively prevent the rotating latch 34 from being accidentally touched and accidentally opening the movable handle 32; when unlocking is required, the finger can be inserted into the avoidance groove 201 and the unlocking paddle portion 342 can be pushed downward to make the latch portion 341 disengage from the locking ear portion 322, thereby unlocking the movable handle 32.

[0032] A spring 4 for pushing the locking block 33 outwards is sleeved on the pull rod 31. One end of the pull rod 31 is fixed with a first hinge member 51. Correspondingly, a second hinge hole 52 matching the first hinge member 51 for hinging is formed on the movable handle 32, and the second hinge hole 52 is eccentrically arranged. A first sunk groove 101 for the pull rod 31 to pass through is formed on the first seat body 1, and a limiting portion 102 for limiting the pull rod 31 is arranged on the first seat body 1 at the first sunk groove 101; a blocking portion 103 is further formed on the first seat body 1. The blocking portion 103 has a curved surface matching the movable handle 32, and the lower end portion of the movable handle 32 abuts against the blocking portion 103. A lubricating sheet 150 for enabling the smooth swinging of the movable handle 32 is further arranged on the blocking portion 103. Here, when the movable handle 32 is toggled downwards and pressed, the relative distance between the first hinge member 51 and the blocking portion 103 is reduced, and the pull rod 31 is pushed to move, finally enabling the second insertion shaft 332 of the locking block 33 to protrude from the second slot 132 of the second seat body 2, that is, unlocking is completed; similarly, when the movable handle 32 is pulled back upwards, the relative distance between the first hinge member 51 and the blocking portion 103 is increased, and the pull rod 31 is pulled back, finally enabling the second insertion shaft 332 of the locking block 33 to be inserted into the second slot 132 of the second seat body 2, that is, locking is completed.

[0033] A first sleeve portion 202 for installing the rotating bolt 34 is arranged in the avoidance groove 201. The rotating bolt 34 is installed on the first sleeve portion 202 through a first pin 61, and a torsion spring 203 for driving the rotation and locking of the rotating bolt 34 is sleeved on the first sleeve portion 202. A first torsion spring hole 205 is further formed on the second seat body 2 beside the first sleeve portion 202. A second torsion spring hole 204 is formed on the rotating bolt 34. One end of the torsion spring 203 is integrally formed with a first insertion end 207 inserted into the first torsion spring hole 205, and the other end of the torsion spring 203 is integrally formed with a second insertion end 206 inserted into the second torsion spring hole 204 to drive the rotation and locking of the rotating bolt 34 with the first sleeve portion 202 as the rotation center axis. Here, the bolt portion 341 has an outward inclined surface. When the movable handle 32 needs to be locked, only the outer surface of the hand-held portion 321 needs to be pressed, so that the locking ear portion 322 of the movable handle 32 abuts against the inclined surface of the bolt portion 341, and the bolt portion 341 is pushed to rotate the rotating bolt 34 until the bolt portion 341 is aligned with the locking ear portion 322. At this time, the rotating bolt 34 will be driven by the elastic force of the torsion spring 203 to insert the bolt portion 341 into the locking ear portion 322 to complete the locking.

[0034] A third hinge member 7 and a fourth hinge member 8 are respectively arranged on the first seat body 1. Correspondingly, a fifth hinge hole 25 and a sixth hinge hole 26 for respectively hinging with the third hinge member 7 and the fourth hinge member 8 are formed on the second seat body 2.

[0035] The locking block 33 is installed on the pull rod 31 through a screw 10, and a positioning hole 30 is formed in the locking block 33, and a positioning pin 301 for positioning the screw 10 is inserted into the positioning hole 30.

[0036] Combined with Figure 4 As shown, the present invention can further enhance the structural stability by adding a clamping structure. Specifically, a first bolt hole 261 and a second bolt hole 262 are formed in the lower end surface of the second seat body 2, and a first bolt 271 and a second bolt 272 are respectively inserted into the first bolt hole 261 and the second bolt hole 262. Correspondingly, a first clamping hole 181 and a second clamping hole 182 are formed in the first seat body 1. Here, when the structure is in the locked state, the first bolt 271 and the second bolt 272 will be respectively clamped in the first clamping hole 181 and the second clamping hole 182. When the scooter is running on a bumpy road condition, the first bolt 271 and the second bolt 272 can bear the acting force brought by the bumps and avoid the frame from shaking.

[0037] In summary, in the present invention, the fixing device 3 is composed of two locking structures, namely, the movable handle 32 and the pull rod 31 cooperating with the locking block 33, and the rotating pin 34 cooperating with the movable handle 32, which greatly improves the locking effect. Moreover, even if the rotating pin 34 is accidentally toggled to unlock the movable handle 32, the locking block 33 will not be unlocked. It is necessary to further apply a certain force to the movable handle 32 to make it swing downward and drive the pull rod 31 to push the locking block 33 to unlock before the unlocking can be completed, which improves the overall strength. And the structure is simple and reliable. It is not only applicable to various folding boxes of scooters, but also can be applied to the folding handle locking structures of bicycles and scooters. In addition, compared with the existing structure, when the present invention is locked, the upper end of the movable handle 32 can be received in the avoidance groove 201, and the whole is in a square box shape after being received, effectively improving the flatness, avoiding accidental opening of the movable handle 32 by accidental touch, and also protecting the interior from being eroded by the sun, rain, etc., with a long service life and durability.

[0038] Of course, the above are only specific embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention shall be included in the scope of the patent application of the present invention.

Claims

1. A frame folding locking structure, comprising: A first base body (1), a second base body (2) and a fixing device (3) for locking or unlocking the first base body (1) and the second base body (2), wherein the first base body (1) and the second base body (2) are hingedly connected so that the first base body (1) can be folded and swung relative to the second base body (2). It is characterized in that The fixing device (3) comprises: a pull rod (31) passing through the first base (1), a movable handle (32) hingedly arranged at one end of the pull rod (31) and capable of driving the pull rod (31) to telescopically move, a locking block (33) fixed to the other end of the pull rod (31) and driven by the pull rod (31), and a rotating latch (34) rotatably arranged on the second base (2) and used for rotationally locking the movable handle (32), and an avoidance groove (201) for accommodating the movable handle (32) is formed on the second base (2).

2. A frame folding locking structure according to claim 1, characterized in that: The locking block (33) is respectively protruded with a first plug-in shaft (331) and a second plug-in shaft (332) which are distributed laterally; the first seat body (1) is provided with a first slot (131) for inserting and fixing the first plug-in shaft (331); the second seat body (2) is provided with a second slot (132) for inserting and fixing the second plug-in shaft (332); and the length of the first plug-in shaft (331) is greater than the length of the second plug-in shaft (332).

3. The frame folding and locking structure according to claim 1, characterized in that: The locking block (33) is also respectively recessed with a first groove (333) and a second groove (334), and correspondingly, the first seat body (1) is protruding with a first convex portion (133) and a second convex portion (134) for respectively extending into the first groove (333) and the second groove (334), and the second seat body (2) is protruding with a third convex portion (135) and a fourth convex portion (136) for respectively extending into the first groove (333) and the second groove (334).

4. The frame folding and locking structure according to claim 1, characterized in that: The upper end of the movable handle (32) is formed with a hand buckle (321) for being turned by a human hand, and a locking ear (322) for being turned and locked by the rotating bolt (34) is arranged inside the hand buckle (321). The rotating bolt (34) is protrudingly formed with a bolt portion (341) which is bent and matches the locking ear (322), and the rotating bolt (34) is also protrudingly formed with an unlocking paddle portion (342) for being turned and unlocked by a human hand.

5. The frame folding and locking structure according to claim 1, characterized in that: The pull rod (31) is sleeved with a spring (4) for pushing the locking block (33) outward, and a first hinged member (51) is fixed to one end of the pull rod (31). Correspondingly, the movable handle (32) is formed with a second hinged hole (52) that is matched and hinged with the first hinged member (51), and the second hinged hole (52) is eccentrically arranged.

6. The frame folding and locking structure according to claim 1, characterized in that: The first seat body (1) is formed with a first recessed groove (101) for the pull rod (31) to pass through, and the first seat body (1) is provided with a limiting portion (102) on the first recessed groove (101) for limiting the pull rod (31); the first seat body (1) is also formed with a blocking portion (103), the blocking portion (103) has a curved surface matching the movable handle (32), and the lower end of the movable handle (32) abuts against the blocking portion (103), and the blocking portion (103) is also provided with a lubricating sheet (150) for allowing the movable handle (32) to swing smoothly.

7. A frame folding and locking structure according to any one of claims 1 to 6, characterized in that: A first sleeve portion (202) for mounting the rotating latch (34) is arranged in the avoidance groove (201); the rotating latch (34) is mounted on the first sleeve portion (202) via a first pin (61); and a torsion spring (203) for driving the rotating latch (34) to perform rotational locking is sleeved on the first sleeve portion (202).

8. The frame folding and locking structure according to claim 7, characterized in that: The second seat body (2) is also provided with a first torsion spring hole (205) beside the first sleeve portion (202), and the rotating latch (34) is provided with a second torsion spring hole (204). One end of the torsion spring (203) is integrally formed with a first insertion end (207) inserted into the first torsion spring hole (205), and the other end of the torsion spring (203) is integrally formed with a second insertion end (206) inserted into the second torsion spring hole (204), so as to drive the rotating latch (34) to rotate and lock with the first sleeve portion (202) as the rotation center axis.

9. A frame folding and locking structure according to any one of claims 1 to 6, characterized in that: The first base body (1) is provided with a third hinge (7) and a fourth hinge (8), respectively, and correspondingly, the second base body (2) is provided with a fifth hinge hole (25) and a sixth hinge hole (26) for respectively being hinged to the third hinge (7) and the fourth hinge (8).

10. A frame folding and locking structure according to any one of claims 1 to 6, characterized in that: The locking block (33) is mounted on the pull rod (31) via a screw (10), and a positioning hole (30) is provided on the locking block (33), wherein a positioning pin (301) for positioning the screw (10) is inserted into the positioning hole (30).

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