Bicycle folding and locking device

Abstract

The utility model discloses a bicycle folding and locking device which comprises a first bicycle frame connecting block and a second bicycle frame connecting block which are connected in a hinged mode and can be flatly attached together when rotating relatively. The locking block on one side wall of the first frame connecting block slides in a reciprocating manner and can be buckled with or released from the lock catch on one side wall of the second frame connecting block, so that the first frame connecting block and the second frame connecting block are fixed into a whole or can rotate relatively; the locking block driving device on the first frame connecting block or the second frame connecting block can drive the locking block to slide, the locking block positioning device can stop and position the locking block or the locking block driving device so that the locking block can be kept at the position where the locking block is connected with the lock catch in a buckled mode, and the locking device is simple in structure, attractive in appearance and convenient to use. When the frame is folded, parts cannot shake, the frame cannot be abraded in the folding and unfolding process of the frame, the frame can be unfolded and folded only by rotating the handle, and operation is convenient and labor is saved.

Description

Technical Field

[0001] The utility model relates to the field of bicycles, in particular to a folding locking device for a bicycle. Background Art

[0002] In order to improve the portability of bicycles and reduce storage space, some bicycle frames adopt a foldable structure. When carrying or storing, the folding locking device on the frame is opened and the frame is folded together to reduce the overall size. When riding, the frame is unfolded and the two parts of the frame are fixedly connected by the folding locking device to form an integrated structure, which is convenient for stable riding.

[0003] The current frame folding structure is to fix a frame connecting block on the front section of the frame and a frame connecting block on the rear section of the frame, and hinge the side walls of the two frame connecting blocks together through a hinge shaft, so that the front section and the rear section of the frame can be rotated around the hinge shaft to achieve a folding effect of the frame folding in half. At the same time, an open buckle is provided on one frame connecting block, and a pull rod is rotatably provided on the other frame connecting block, and a handle with an eccentric wheel is provided at the end of the pull rod. When the bicycle is unfolded and used, the pull rod is rotated to make the pull rod snap into the above-mentioned open buckle. At this time, the outer side surface of the circumference of the eccentric wheel at the end of the pull rod just contacts the surface of the open buckle. The handle is rotated to make the eccentric wheel press against the surface of the open buckle to realize the unfolding and positioning of the frame. This structure relies on the pull rod to connect the two frame positioning blocks together, and has high requirements on the pulling force of the pull rod.

[0004] The folding locking device of the above structure may cause the pull rod to disengage from the open buckle when encountering bumps during bicycle riding, making the frame unfolding ineffective; and after long-term use, the eccentric wheel will wear, which may easily cause the pull rod to be unable to tighten the front and rear frames, resulting in a gradual reduction in the locking ability; and after folding, the pull rod is in a free state and will move around on the frame at will, easily scratching the frame surface and causing damage to the frame; this type of locking device is time-consuming and labor-intensive to use, and is prone to improper locking, causing trouble to normal riding. Summary of the Invention

[0005] In order to make up for the above shortcomings, the utility model provides a bicycle folding locking device, which has a simple structure, is easy to operate, and has a beautiful appearance. The unfolded and locked state of the frame is stable and will not wear the frame surface.

[0006] 18. The folding locking device of claim 17, wherein the locking block is configured to be rotatable relative to the first and second bicycle frame connecting blocks and to be fixed to the bicycle frame by the locking mechanism.

[0007] As a further improvement of the present invention, the locking block driving device includes an operating handle and a pull rod, one end of the pull rod is fixedly connected to the locking block, and one end of the operating handle is provided with an eccentric wheel, which can be rotated to a set angle and installed on the first frame connecting block or the second frame connecting block, and the other end of the pull rod is always close to the outer surface of the circumference of the eccentric wheel and drives the locking block to slide as the eccentric wheel rotates, and the locking block positioning device can stop and position the operating handle rotated to the locking angle position with the first frame connecting block or the second frame connecting block.

[0008] As a further improvement of the present invention, the locking block positioning device is a plug that is movably installed on the operating handle, and a slot is provided on the first frame connecting block or the second frame connecting block. When the operating handle is rotated to the locking angle position, the plug moves on the operating handle and can be inserted into the slot to achieve the stopping positioning of the operating handle. The operating handle is also provided with a first elastic member, which can provide elastic retaining force to the plug, so that the plug is automatically inserted into the slot on the first frame connecting block or the second frame connecting block when the operating handle is in the locking angle position.

[0009] As a further improvement of the present invention, the operating handle is provided with a plug-in mounting hole with a long cross-section, the plug-in is inserted into the plug-in mounting hole, and the plug-in can be swung to a set angle and hinged on the side wall of the plug-in mounting hole, one end of the plug-in is always located outside the plug-in mounting hole to form a pressing operation end, and the other end of the plug-in can extend out of the plug-in mounting hole to a set length or retract into the plug-in mounting hole as the plug-in swings, and the other end of the plug-in extends out of the plug-in mounting hole by a set distance and can be inserted into the slot, and the first elastic member provides elastic torsion to the plug so that the other end of the plug-in keeps extending out of the plug-in mounting hole to a set length.

[0010] As a further improvement of the present invention, a radially outward-expanding retaining ring is provided on the outer side of the circumference of the pull rod, and a U-shaped pad is also provided on the first frame connecting block. The U-shaped pad can be installed on the first frame connecting block in the same direction as the locking block. The U-shaped bottom surface of the U-shaped pad is provided with an avoidance hole for the pull rod to pass through, and unlocking shaft holes are respectively provided on both side walls of the U-shaped pad. The radially outward-expanding retaining ring on the pull rod is accommodated in the U-shaped pad and stopped on the bottom surface of the U-shaped pad close to the side surface of the eccentric wheel. The eccentric protrusion is provided on at least one axial end face of the eccentric wheel. The eccentric protrusion is inserted in the unlocking shaft hole on at least one side wall of the U-shaped pad. The eccentric protrusion can move the U-shaped pad to slide on the first frame connecting block as the eccentric wheel rotates, thereby driving the pull rod to move in the unlocking direction.

[0011] As a further improvement of the present invention, a pressure block is sleeved on the outer side of the other end of the pull rod. The pressure block is stopped in the circumferential direction and can slide axially and is inserted between the two side walls of the U-shaped pad. One end of the pressure block is tightly against the radial outward expansion ring, and the other end of the pressure block forms an arc-shaped concave surface. The outer circumferential surface of the eccentric wheel is tightly attached to the arc-shaped concave surface of the other end of the pressure block.

[0012] As a further improvement of the present invention, the locking block is a V-shaped block, one end of the pull rod is threadedly connected and fixed to the locking block, and a first locking block accommodating groove is provided on one side wall of the first frame connecting block, and a second locking block accommodating groove is provided on one side wall of the second frame connecting block, and the first locking block accommodating groove and the second locking block accommodating groove are respectively provided with a first concave card groove and a second concave card groove on one side wall along the sliding direction of the locking block. The locking block can be slidably accommodated in the first locking block accommodating groove and the second locking block accommodating groove by a set distance, and the two ends of the locking block V-shaped structure can be respectively inserted into the first concave card groove and the second concave card groove to tightly combine the first frame connecting block and the second frame connecting block together, and a side wall at one end of the first locking block accommodating groove is provided with an avoidance through-hole for the other end of the pull rod to extend out of the first locking block accommodating groove.

[0013] As a further improvement of the present invention, a second elastic member is further provided in the first locking block accommodating groove, and the second elastic member is sleeved on the outside of the pull rod. The elastically retractable two ends of the second elastic member are respectively pressed tightly against the locking block and the inner wall of one end of the first locking block accommodating groove. The second elastic member provides a locking elastic holding force to the locking block, and the other end of the pull rod is always pressed tightly against the outer surface of the circumference of the eccentric wheel under the action of the locking elastic holding force of the second elastic member.

[0014] As a further improvement of the present invention, two first hinge columns are provided in parallel and spaced apart at one end of the first frame connecting block, and two second hinge columns are provided in parallel and spaced apart at one end of the second frame connecting block. The two first hinge columns are coaxially arranged between the two second hinge columns, and the two first hinge columns and the two second hinge columns are coaxially provided with a first hinge hole and a second hinge hole. A hinge shaft is axially stopped in the first hinge hole and the second hinge hole, and the eccentric wheel is sleeved on the outside of the hinge shaft between the two first hinge columns. The two side walls of the U-shaped pad are tightly clamped between the eccentric wheel and the first hinge column, and the unlocking shaft hole gap on the two side walls of the U-shaped pad is sleeved on the outside of the hinge shaft.

[0015] As a further improvement of the present invention, a folding receiving groove is formed on one side of the second frame connecting block, one side of the first frame connecting block can be flatly attached to the bottom surface of the folding receiving groove on one side of the second frame connecting block, and the first frame connecting block can be received in the folding receiving groove on one side of the second frame connecting block, a limiting rib is provided on one side wall of the first frame connecting block, and a limiting groove is provided on the bottom surface of the folding receiving groove on one side of the second frame connecting block, the limiting rib is flatly attached to the bottom surface of the folding receiving groove on one side of the second frame connecting block and can be inserted into the limiting groove, a concave arc surface is formed on one end surface of the first frame connecting block, and the second hinge column at one end of the second frame connecting block can rotate along the concave arc surface.

[0016] The beneficial technical effect of the utility model is that the utility model provides a locking block on the first frame connecting block, and the eccentric wheel with the handle drives the pull rod to slide linearly, thereby driving the locking block to slide back and forth. The locking block slides back and forth to achieve connection or disengagement with the lock buckle on the second frame connecting block, thereby realizing the unfolding, locking or unlocking of the frame. The utility model has a simple structure and beautiful appearance. There is no shaking of parts when the frame is folded, and the frame will not be worn during the folding and unfolding process. The frame can be unfolded and folded by simply turning the handle, which is easy to operate and saves effort. The locking block adopts a V-shaped structure, and the inclined surface of the V-shaped structure is used to make the first frame connecting block and the second frame connecting block fit tightly together, with no gap between the two, thereby improving the positioning stability of the frame, and also through the locking block positioning device to stably position the operating handle in the unfolded and locked state of the frame, to prevent the frame from being mislocked due to bumps, etc., thereby ensuring the riding safety of the folding bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model in a locked state;

[0018] Figure 2 This is a front view of the utility model in a locked state;

[0019] Figure 3 for Figure 2Middle AA section view;

[0020] Figure 4 It is a right side view of the utility model in a locked state;

[0021] Figure 5 This is a three-dimensional exploded view of the present invention. DETAILED DESCRIPTION

[0022] 14. The folding locking device of claim 13, wherein the first and second frame connecting blocks are hingedly connected to each other, and a side wall of the first frame connecting block 1 and a side wall of the second frame connecting block 2 can be tightly flat together as the first frame connecting block 1 and the second frame connecting block 2 rotate relative to each other, and a locking block 3 is slidably provided on one side wall of the first frame connecting block 1, and a lock is provided on one side wall of the second frame connecting block 2. The locking block 3 can slide on one side wall of the first frame connecting block 1 and be engaged or disengaged with the lock, thereby fixing the first frame connecting block 1 and the second frame connecting block 2 to form a whole or being able to rotate relative to each other, and a locking block 3 driving device and a locking block 3 positioning device are also provided on the first frame connecting block 1 or the second frame connecting block 2, the locking block 3 driving device can drive the locking block 3 to slide, and the locking block 3 positioning device can stop and position the locking block 3 or the locking block 3 driving device so that the locking block 3 remains in a position connected to the lock.

[0023] When in use, the first frame connecting block 1 and the second frame connecting block 2 are fixed to the front section and the rear section of the foldable frame respectively.

[0024] When folding, the locking block 3 is driven by the locking block 3 driving device to slide in the unlocking direction, so that the locking block 3 is disengaged from the lock buckle, and then the first frame connecting block 1 and the second frame connecting block 2 are unlocked. At this time, the front and rear sections of the bicycle frame can be rotated to make the first frame connecting block 1 and the second frame connecting block 2 rotate relative to each other, and the front and rear sections of the bicycle frame are folded together, reducing the length of the entire frame and making it easier to store and carry.

[0025] When the frame is unfolded, the first frame connecting block 1 and the second frame connecting block 2 of the front and rear sections of the frame are rotated to keep one side thereof flat. At this time, the frame is unfolded. Then, the locking block 3 is driven by the locking block 3 driving device to slide in the locking direction, so that the locking block 3 is engaged and connected with the lock buckle, and then the first frame connecting block 1 and the second frame connecting block 2 are locked and fixed in position to form an integrated structure. At this time, normal riding can be carried out.

[0026] The locking block 3 driving device includes an operating handle 4 and a pull rod 5, one end of the pull rod 5 is fixedly connected to the locking block 3, and an eccentric wheel 6 is provided at one end of the operating handle 4. The eccentric wheel 6 can be rotated to a set angle and installed on the first frame connecting block 1 or the second frame connecting block 2. The other end of the pull rod 5 is always close to the outer side surface of the circumference of the eccentric wheel 6 and drives the locking block 3 to slide as the eccentric wheel 6 rotates. The locking block 3 positioning device can stop and position the operating handle 4 rotated to the locking angle position with the first frame connecting block 1 or the second frame connecting block 2.

[0027] By rotating the operating handle 4, the eccentric wheel 6 is driven to rotate synchronously, and then the cam surface of the eccentric wheel 6 is used to drive the pull rod 5 to slide linearly, and then the locking block 3 is driven to slide back and forth to achieve unlocking or locking. When the operating handle 4 drives the eccentric wheel 6 to rotate, when it rotates to the locked position, the locking block 3 positioning device is used to stop and position the locking block 3 or the operating handle 4 to prevent it from being accidentally opened by external force. The above structure is simple, occupies a small space, uses the lever principle, and is labor-saving to operate. In addition, the locking block 3 driving device can also be a method of rotating the handle to drive the screw to rotate, or a quick-clamping device with a connecting rod structure, etc. The above structures are all equivalent replacement structures that can be easily thought of by those skilled in the art based on this patent and fall within the scope of protection of this patent.

[0028] The locking block 3 positioning device is a movably mounted insert 7 on the operating handle 4. A slot 8 is provided on the first frame connecting block 1 or the second frame connecting block 2. When the operating handle 4 is rotated to the locked angle position, the insert 7 moves on the operating handle 4 and can be inserted into the slot 8 to achieve a stop position of the operating handle 4. The operating handle 4 is also provided with a first elastic member 9. The first elastic member 9 can provide an elastic retaining force to the insert 7, so that the insert 7 automatically inserts into the slot 8 on the first frame connecting block 1 or the second frame connecting block 2 when the operating handle 4 is in the locked angle position. When the operating handle 4 is rotated to the locked position, the insert 7 on the operating handle 4 is exactly aligned with the slot 8 on the first frame connecting block 1 or the second frame connecting block 2. Under the elastic force of the first elastic member 9, the insert 7 automatically inserts into the slot 8 to lock the position of the operating handle 4, preventing it from being accidentally rotated by external forces, causing the bicycle frame to suddenly unlock during riding, thereby ensuring riding safety. The structure for limiting the rotation angle of the eccentric wheel 6 can be to set a limiting protrusion 31 on the axial end face of the eccentric wheel 6, and set an arc-shaped groove on the first frame connecting block 1 or the second frame connecting block 2. The limiting protrusion slides in the arc-shaped groove to limit the rotation angle, so that it cannot continue to rotate after it rotates to the locked position, so that the operating handle 4 is automatically locked after it is rotated into place.

[0029] The operating handle 4 is provided with a plug-in mounting hole 10 with a long cross-section. The plug-in 7 is inserted into the plug-in mounting hole 10, and the plug-in 7 is hinged on the side wall of the plug-in mounting hole 10 to be able to swing at a set angle. One end of the plug-in 7 is always located outside the plug-in mounting hole 10 to form a pressing operation end, and the other end of the plug-in 7 can extend out of the plug-in mounting hole 10 to a set length or retract into the plug-in mounting hole 10 as the plug-in 7 swings. The other end of the plug-in 7 extends out of the plug-in mounting hole 10 by a set distance and can be inserted into the slot 8. The first elastic member 9 provides elastic torsion to the plug-in 7 so that the other end thereof remains extended out of the plug-in mounting hole 10 to a set length. The insert 7 swings left and right in the insert mounting hole 10, and is restricted by the inner side wall of the long strip insert mounting hole 10. The insert 7 can only swing within a certain angle range. When the operating handle 4 is rotated to the insert mounting hole 10, the insert 7 is aligned with the slot 8 on the first frame connecting block 1 or the second frame connecting block 2. Under the action of the first elastic member 9, the insert 7 swings a certain angle and is inserted into the slot 8. In addition to adopting a structure of elastic swinging left and right, the insert 7 can also slide up and down or left and right to be plugged and positioned with the slot 8. These structures are equivalent replacement structures that can be easily thought of by those skilled in the art based on this patent and fall within the scope of protection of this patent.

[0030] The outer side of the pull rod 5 is provided with a radially outward-expanding retaining ring 17, and the first frame connecting block 1 is also provided with a U-shaped pad 24. The U-shaped pad 24 can be installed on the first frame connecting block 1 in the same direction as the locking block 3. The U-shaped bottom surface of the U-shaped pad 24 is provided with an avoidance hole 25 for the pull rod 5 to pass through, and unlocking shaft holes 26 are respectively provided on the two side walls of the U-shaped pad 24. The radially outward-expanding retaining ring 17 on the pull rod 5 is accommodated in the U-shaped pad 24 and stopped on the bottom surface of the U-shaped pad 24 close to the side surface of the eccentric wheel 6. The eccentric protrusion 31 is provided on at least one axial end face of the eccentric wheel 6. The eccentric protrusion 31 is inserted into the unlocking shaft hole 26 on at least one side wall of the U-shaped pad 24. The eccentric protrusion 31 can drive the U-shaped pad 24 to slide on the first frame connecting block 1 as the eccentric wheel 6 rotates, thereby driving the pull rod 5 to move in the unlocking direction. When unlocking, the eccentric wheel 6 rotates in the unlocking direction, and the eccentric protrusions 31 at both ends of the eccentric wheel 6 pull the U-shaped pad 24 to slide, thereby causing the locking block 3 to automatically disengage from the lock buckle and actively unlock; when the eccentric wheel 6 rotates in the locking direction, the eccentric protrusions 31 on the eccentric wheel 6 push the U-shaped pad 24 to move in the opposite direction to release the radially outward expansion ring 17 on the pull rod 5. At the same time, the outer side surface of the circumference of the eccentric wheel 6 is tightly pressed against the other end of the pull rod 5, causing the locking block 3 to move in the locking direction and then engage with the lock buckle.

[0031] A pressure block 18 is sleeved on the outer side of the other end of the pull rod 5. The pressure block 18 is inserted between the two side walls of the U-shaped pad 24, with a circumferential stop and an axial sliding state. One end of the pressure block 18 is tightly against the radially outward expansion ring 17, and the other end of the pressure block 18 forms an arc-shaped concave surface. The outer circumferential surface of the eccentric wheel 6 is tightly against the arc-shaped concave surface at the other end of the pressure block 18. The contact between the arc-shaped concave surface on the pressure block 18 and the cam surface of the eccentric wheel 6 can reduce friction and ensure smooth rotation of the eccentric wheel 6.

[0032] The locking block 3 is a V-shaped block, and one end of the pull rod 5 is threadedly connected and fixed to the locking block 3. A first locking block accommodating groove 11 is provided on one side wall of the first frame connecting block 1, and a second locking block accommodating groove 14 is provided on one side wall of the second frame connecting block 2. The first locking block accommodating groove and the second locking block 3 accommodating groove are respectively provided with a first concave card groove 15 and a second concave card groove 16 on one side wall along the sliding direction of the locking block 3. The locking block 3 can be slidably accommodated in the first locking block accommodating groove 11 and the second locking block accommodating groove 14 at a set distance. The two ends of the V-shaped structure of the locking block 3 can be respectively inserted into the first concave card groove 15 and the second concave card groove 16 to tightly combine the first frame connecting block 1 and the second frame connecting block 2 together. A side wall at one end of the first locking block accommodating groove 11 is provided with an avoidance through-hole 12 for the other end of the pull rod 5 to extend out of the first locking block accommodating groove 11. The locking block 3 adopts a V-shaped structure, which contacts the inner edges of the first concave slot 15 and the second concave slot 16 through its inclined surface. When the locking block 3 is unlocked and the second frame connecting block 2 is rotated relative to the first frame connecting block 1, the inclined surface of the locking block 3 is automatically slid out of the second concave slot 16 by the pressure of the inner edge of the second concave slot 16 to achieve unlocking. In addition, the locking block 3 can also be a hook-shaped structure. When it slides in the first locking block accommodating groove 11, the hook structure on it hooks the annular lock buckle on the side wall of the second frame connecting block 2.

[0033] A second elastic member 13 is also provided in the first locking block receiving groove 11. The second elastic member 13 is sleeved on the outside of the pull rod 5. The elastically retractable ends of the second elastic member 13 respectively press against the locking block 3 and the inner side wall of one end of the first locking block receiving groove 11. The second elastic member 13 provides a locking elastic retaining force for the locking block 3. Under the action of the locking elastic retaining force of the second elastic member 13, the other end of the pull rod 5 always presses against the outer side surface of the circumference of the eccentric wheel 6. The second elastic member 13 provides an elastic retaining force for the locking block 3, so that when locking, the eccentric wheel 6 can be easily rotated to drive the locking block 3 to move and lock.

[0034] Two first hinge columns 19 are provided in parallel and spaced apart at one end of the first frame connecting block 1, and two second hinge columns 20 are provided in parallel and spaced apart at one end of the second frame connecting block 2. The two first hinge columns 19 are coaxially arranged between the two second hinge columns 20. A first hinge hole 21 and a second hinge hole 22 are coaxially provided on the two first hinge columns 19 and the two second hinge columns 20. A hinge shaft 23 is axially stopped in the first hinge hole 21 and the second hinge hole 22. The eccentric wheel 6 is sleeved on the outside of the hinge shaft 23 between the two first hinge columns 19. The two side walls of the U-shaped pad 24 are tightly clamped between the eccentric wheel 6 and the first hinge column 19. The unlocking shaft holes 26 on the two side walls of the U-shaped pad 24 are loosely sleeved on the outside of the hinge shaft 23. The second hinge hole 22 on a second hinge column 20 on the second frame connecting block 2 is a recessed groove structure, and the second hinge hole 22 on the second hinge column 20 on the other second hinge column 20 is a perforated structure. A set screw 27 is movably screwed on the side wall of the second hinge hole 22 of the perforated structure, and the head of the set screw is tightly against the outer circumferential wall of the hinge shaft 23 to realize the stopping positioning of the second hinge hole 22 and the hinge shaft 23.

[0035] A folding receiving groove 28 is formed on one side of the second frame connecting block 2. The first frame connecting block 1 can be flatly attached to the bottom surface of the folding receiving groove 28 on the side of the second frame connecting block 2, and the first frame connecting block 1 can be received in the folding receiving groove 28 on the side of the second frame connecting block 2. A limiting rib 29 is provided on a side wall of the first frame connecting block 1, and a limiting groove is provided on the bottom surface of the folding receiving groove 28 on the side of the second frame connecting block 2. The limiting rib 29 is flatly attached to the bottom surface of the folding receiving groove 28 on the side of the first frame connecting block 1 and can be inserted into the limiting groove. A concave arc is formed on one end surface of the first frame connecting block 1, and the second hinge column 20 at one end of the second frame connecting block 2 can rotate along the concave arc. This structure ensures that there is no gap at the connection when the bicycle is unfolded, and there are no exposed parts on the outside of the joint. The overall structure is beautiful, and the folding receiving groove 28 strengthens the connection of the first frame connecting block 1, reducing the chance of damage to the locking block 3.

Claims

1. A bicycle folding locking device, comprising a first frame connecting block (1) and a second frame connecting block (2), wherein the first frame connecting block and the second frame connecting block are hingedly connected, and a side wall of the first frame connecting block and a side wall of the second frame connecting block can be tightly and flatly attached together as the first frame connecting block and the second frame connecting block rotate relative to each other, wherein the device is characterized by: A locking block (3) is provided on one side wall of the first frame connecting block and can slide, and a lock buckle is provided on one side wall of the second frame connecting block, and the locking block can slide on one side wall of the first frame connecting block and can be engaged or disengaged with the lock buckle, thereby making the first frame connecting block and the second frame connecting block fixed to form a whole or able to rotate relatively, and the first frame connecting block or the second frame connecting block is also provided with a locking block driving device and a locking block positioning device, the locking block driving device can drive the locking block to slide, and the locking block positioning device can stop and position the locking block or the locking block driving device so that the locking block remains in a position state of being engaged with the lock buckle and does not move.

2. The bicycle folding locking device according to claim 1, characterized in that: The locking block driving device includes an operating handle (4) and a pull rod (5), one end of the pull rod is fixedly connected to the locking block, and one end of the operating handle is provided with an eccentric wheel (6), the eccentric wheel can be rotated to a set angle and installed on the first frame connecting block or the second frame connecting block, the other end of the pull rod is always in close contact with the outer side surface of the eccentric wheel and drives the locking block to slide as the eccentric wheel rotates, and the locking block positioning device can stop and position the operating handle rotated to the locking angle position with the first frame connecting block or the second frame connecting block.

3. The bicycle folding locking device according to claim 2, characterized in that: The locking block positioning device is a plug (7) movably mounted on the operating handle, and a slot (8) is provided on the first frame connecting block or the second frame connecting block. When the operating handle is rotated to the locking angle position, the plug moves on the operating handle and can be inserted into the slot to achieve the stopping positioning of the operating handle. The operating handle is also provided with a first elastic member (9), which can provide an elastic retaining force to the plug, so that the plug is automatically inserted into the slot on the first frame connecting block or the second frame connecting block when the operating handle is in the locking angle position.

4. The bicycle folding locking device according to claim 3, wherein: The operating handle is provided with a plug-in mounting hole (10) with a long strip cross section, the plug-in is inserted into the plug-in mounting hole, and the plug-in can be swung to a set angle and hinged on the side wall of the plug-in mounting hole, one end of the plug-in is always located outside the plug-in mounting hole to form a pressing operation end, the other end of the plug-in can extend out of the plug-in mounting hole by a set length or retract into the plug-in mounting hole as the plug-in swings, the other end of the plug extends out of the plug-in mounting hole by a set distance and can be inserted into the slot, and the first elastic member provides elastic torsion to the plug-in so that the other end thereof remains extended out of the plug-in mounting hole by a set length.

5. The bicycle folding locking device according to claim 2, characterized in that: The outer side of the pull rod is provided with a radially outward-expanding retaining ring (17), and the first frame connecting block is also provided with a U-shaped pad (24). The U-shaped pad can be installed on the first frame connecting block in the same direction as the locking block. The U-shaped bottom surface of the U-shaped pad is provided with an avoidance hole (25) for the pull rod to pass through, and unlocking shaft holes (26) are respectively provided on the two side walls of the U-shaped pad. The radially outward-expanding retaining ring on the pull rod is accommodated in the U-shaped pad and stopped on the bottom surface of the U-shaped pad close to the side surface of the eccentric wheel. The eccentric protrusion (31) is provided on at least one end face of the eccentric wheel. The eccentric protrusion is inserted into the unlocking shaft hole on at least one side wall of the U-shaped pad. The eccentric protrusion can move the U-shaped pad to slide on the first frame connecting block as the eccentric wheel rotates, thereby driving the pull rod to move toward the unlocking direction.

6. The bicycle folding locking device according to claim 5, characterized in that: A pressure block (18) is sleeved on the outer side of the other end of the pull rod. The pressure block is stopped in the circumferential direction and can slide in the axial direction and is inserted between the two side walls of the U-shaped pad. One end of the pressure block is tightly against the radially outward expansion ring, and the other end of the pressure block forms an arc-shaped concave surface. The outer circumferential surface of the eccentric wheel is tightly against the arc-shaped concave surface of the other end of the pressure block.

7. The bicycle folding locking device according to claim 5, characterized in that: The locking block is a V-shaped block, one end of the pull rod is threadedly connected and fixed to the locking block, a first locking block accommodating groove (11) is provided on one side wall of the first frame connecting block, a second locking block accommodating groove (14) is provided on one side wall of the second frame connecting block, and a first concave card groove (15) and a second concave card groove (16) are respectively provided on one side wall of the first locking block accommodating groove and the second locking block accommodating groove along the sliding direction of the locking block, and the locking block can be slidably accommodated in the first locking block accommodating groove and the second locking block accommodating groove at a set distance, and the two ends of the locking block V-shaped structure can be respectively inserted into the first concave card groove and the second concave card groove to tightly combine the first frame connecting block and the second frame connecting block together, and an avoidance through-hole (12) is provided on one side wall of the first locking block accommodating groove for the other end of the pull rod to extend out of the first locking block accommodating groove.

8. The bicycle folding locking device according to claim 7, wherein: A second elastic member (13) is also provided in the first locking block receiving groove, and the second elastic member is sleeved on the outside of the pull rod. The elastically retractable ends of the second elastic member are respectively pressed against the locking block and the inner side wall of one end of the first locking block receiving groove. The second elastic member provides a locking elastic holding force for the locking block. The other end of the pull rod is always pressed against the outer side surface of the circumference of the eccentric wheel under the action of the locking elastic holding force of the second elastic member.

9. The bicycle folding locking device according to claim 5, characterized in that: Two first hinge columns (19) are provided in parallel and spaced relation at one end of the first frame connection block, and two second hinge columns (20) are provided in parallel and spaced relation at one end of the second frame connection block. The two first hinge columns are coaxially arranged between the two second hinge columns, and a first hinge hole (21) and a second hinge hole (22) are coaxially provided on the two first hinge columns and the two second hinge columns. A hinge shaft (23) is axially stopped in the first hinge hole and the second hinge hole, and the eccentric wheel is sleeved on the outside of the hinge shaft between the two first hinge columns. The two side walls of the U-shaped pad are tightly clamped between the eccentric wheel and the first hinge column, and the unlocking shaft hole gap on the two side walls of the U-shaped pad is sleeved on the outside of the hinge shaft.

10. The bicycle folding locking device according to claim 1, wherein: A folding receiving groove (28) is formed on one side of the second frame connecting block, and one side of the first frame connecting block can be flatly attached to the bottom surface of the folding receiving groove on one side of the second frame connecting block, and the first frame connecting block can be received in the folding receiving groove on one side of the second frame connecting block, a limiting rib (29) is provided on one side wall of the first frame connecting block, and a limiting groove is provided on the bottom surface of the folding receiving groove on one side of the second frame connecting block, and the limiting rib can be inserted into the limiting groove when the side wall of the first frame connecting block is flatly attached to the bottom surface of the folding receiving groove on one side of the second frame connecting block, a concave arc surface is formed on one end surface of the first frame connecting block, and a second hinge column at one end of the second frame connecting block can rotate along the concave arc surface.

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