An anti-theft quick-release tube clamp for bicycle saddles

Abstract

This utility model discloses an anti-theft quick-release tube clamp for bicycle saddles, including a clamp, a clamp tensioning unit, a locking unit, and a lever arm. The lever arm is located outside the clamp, and one end of the lever arm is driven and connected to the clamp tensioning unit. The clamp tensioning unit performs inward tightening and outward expansion movements under the swing of the lever arm. When the clamp is tightened inward, the other end of the lever arm is connected to the clamp through the locking unit, thus locking the lever arm. This design achieves a certain degree of anti-theft capability while realizing a quick-release structure for the bicycle saddle tube clamp.

Description

Technical Field

[0001] This utility model belongs to the field of bicycle anti-theft. Background Technology

[0002] In bicycle design, the seatpost clamp and saddle are anti-theft components. Although they are not usually high-priority anti-theft components, high-end seatposts (such as carbon fiber and lightweight seatposts) may become targets for theft. Shared bicycles or vehicles parked in public places need to be protected from theft or malicious removal of the seatpost. The quick-release seatpost clamp of some folding bicycles may be stolen along with the seat. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides an anti-theft quick-release tube clamp for bicycle saddles, which achieves a certain anti-theft capability on the basis of realizing the quick-release structure of the frame seat tube clamp.

[0004] Technical solution: To achieve the above objectives, this utility model provides an anti-theft quick-release tube clamp for a bicycle saddle, comprising a clamp, a clamp tensioning unit, a locking unit, and a lever arm. The lever arm is located outside the clamp, and one end of the lever arm is driven and connected to the clamp tensioning unit. The clamp tensioning unit performs inward tightening and outward expansion movements under the swing of the lever arm. When the clamp is tightened inward, the other end of the lever arm is connected to the clamp through the locking unit, thereby locking the lever arm.

[0005] Furthermore, the clamp is an open-loop structure with a certain degree of elasticity; the two ends of the open-loop clamp are integrally connected to the first hole seat and the second hole seat respectively, and the clamp tightening unit makes the first hole seat and the second hole seat move closer to each other or further away from each other under the swing of the lever arm.

[0006] Furthermore, the locking unit includes a bolt, a cylinder seat, and a cylinder. The bolt is fixed to the end of the lever arm, and the cylinder seat is fixed to the clamp side. The cylinder rotates in the cylinder seat. In the locked state, the bolt and the cylinder seat are locked to each other under the constraint of the cylinder. The bolt and the cylinder seat are unlocked and locked by rotating the cylinder.

[0007] Furthermore, the clamp tightening unit includes a pull rod, a pull rod end, a pressure block, a camshaft, and a cam; one end of the pull rod is vertically fixedly connected to the camshaft, the cam rotates on the camshaft, and the other end of the pull rod is fixedly connected to the pull rod end; the pull rod moves sequentially along the axial direction through the pressure block, the first hole seat, and the pull rod through hole on the second hole seat; the pressure block is between the cam and the first hole seat, and the end of the lever arm away from the locking unit is fixedly connected to the cam.

[0008] Furthermore, a lock groove is provided on one side of the lock cylinder seat, and a lock hole is provided on the lock tongue. The lock tongue can swing with the lever arm to insert into the lock groove, so that the lock cylinder locks the lock hole.

[0009] Furthermore, the lock cylinder seat is provided with a lock cylinder hole, and the columnar lock cylinder moves within the lock cylinder hole. The lock hole is provided with an internal thread; one end of the lock cylinder has an external thread body that mates with the internal thread of the lock hole. In the locked state, the internal thread of the lock hole and the external thread body are threadedly engaged.

[0010] Furthermore, the lock cylinder has an annular unlocking groove at the end away from the external thread body, and at least one locking element is provided in the annular unlocking groove; one end of the matching unlocking tool has a ring that is compatible with the annular unlocking groove, and the ring has a slot that is compatible with the locking element in the annular unlocking groove.

[0011] Beneficial effects: This utility model achieves a certain degree of anti-theft capability while realizing the quick-release structure of the frame seat tube clamp.

[0012] In the locked state, the clamp tightly grips the bicycle frame seatpost clamp inwards, thus tightly gripping the inner side of the bicycle seatpost. The internal thread of the lock hole is tightly threaded with the external thread body, requiring a certain torque to be applied to the lock cylinder to unlock it. This locks the lever arm, preventing it from swinging. Without the special unlocking tool of this solution, the bicycle seatpost cannot be pulled upwards from the frame seatpost clamp, thus providing anti-theft protection for the saddle and seatpost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall device;

[0014] Figure 2 This diagram illustrates the locked and unlocked states.

[0015] Figure 3 for Figure 2 Partial disassembly diagram. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] As attached Figures 1 to 3 The bicycle saddle anti-theft quick-release clamp shown includes a clamp 9, a clamp tensioning unit 32, a locking unit 10, and a lever arm 1. The lever arm 1 is located outside the clamp 9. One end of the lever arm 1 is driven and connected to the clamp tensioning unit 32. The clamp tensioning unit 32 performs inward tightening and outward expansion movements under the swing of the lever arm 1. When the clamp 9 is tightened inward, the other end of the lever arm 1 is connected to the clamp 9 through the locking unit 10, thereby locking the lever arm 1. The clamp 9 is an open-loop structure with a certain degree of elasticity, such as spring steel. The two ends of the open-loop clamp 9 are integrally connected to a first hole seat 5 and a second hole seat 7, respectively. Under the swing of the lever arm 1, the clamp tensioning unit 32 causes the first hole seat 5 and the second hole seat 7 to move closer to each other or further away from each other.

[0018] In specific application scenarios, when locked, the clamp 9 tightly grips the bicycle frame seatpost clamp inward, thus tightly gripping the inner side of the bicycle seatpost and preventing the seatpost from being pulled out.

[0019] like Figure 1 As shown, the clamp tightening unit 32 includes a pull rod 6, a pull rod end 8, a pressure block 4, a cam shaft 3, and a cam 2; one end of the pull rod 6 is vertically fixedly connected to the cam shaft 3, and the cam 2 rotates on the cam shaft 3; the other end of the pull rod 6 is fixedly connected to the pull rod end 8; the pull rod 6 moves sequentially along the axial direction through the pull rod through holes on the pressure block 4, the first hole seat 5, and the second hole seat 7; the pressure block 4 is located between the cam 2 and the first hole seat 5, and the end of the lever arm 1 away from the locking unit 10 is fixedly connected to the cam 2. In this case, as shown... Figure 1 As shown, the pressure block 4 is provided with an arc-shaped cam pillow groove that is adapted to the cam surface of the cam 2 on the side near the cam 2. Since the length of the pull rod 6 is fixed, when the cam 2 rotates clockwise around the cam shaft 3, the cam surface of the cam 2 will push the pressure block 4, thereby bringing the first hole seat 5 and the second hole seat 7 closer to each other, and thus causing the clamp 9 to perform a tightening action.

[0020] like Figure 3 The locking unit 10 includes a bolt 18, a cylinder seat 14, and a cylinder 15. The bolt 18 is fixed to the end of the lever arm 1, and the cylinder seat 14 is fixed to the side of the clamp 9. The cylinder 15 rotates in the cylinder seat 14. In the locked state, the bolt 18 and the cylinder seat 14 are locked to each other under the constraint of the cylinder 15. The bolt 18 and the cylinder seat 14 are unlocked and locked by rotating the cylinder 15.

[0021] A lock groove 16 is provided on one side of the lock cylinder seat 14, and a lock hole 19 is provided on the lock tongue 18. The lock tongue 18 can swing with the lever arm 1 to insert into the lock groove 16, so that the lock cylinder 15 locks the lock hole 19. Specifically, a lock cylinder hole 13 is provided on the lock cylinder seat 14, and the columnar lock cylinder 15 moves coaxially within the lock cylinder hole 13. An internal thread is provided in the lock hole 19. One end of the lock cylinder 15 is provided with an external thread body 40 that mates with the internal thread of the lock hole 19. In the locked state, the internal thread of the lock hole 19 and the external thread body 40 are threadedly engaged. An annular unlocking groove 11 is provided at the end of the lock cylinder 15 away from the external thread body 40, and at least one locking piece 12 is provided in the annular unlocking groove 11.

[0022] To prevent theft, the lock unit 10 needs to be unlocked with a matching unlocking tool 20. One end of the unlocking tool 20 is provided with a ring 22 that is compatible with the annular unlocking groove 11. The ring 22 is provided with a slot 21 that is compatible with the card 12 in the annular unlocking groove 11.

[0023] like Figure 3 The lock cylinder 15 has an outer edge 50 with an outer diameter larger than the inner diameter of the lock cylinder hole 13 at one end away from the external thread body 40.

[0024] The working principle of this solution is as follows: Figure 2 In the locked state, the clamp 9 tightly grips the bicycle frame seatpost clamp inward, thus tightly gripping the inner side of the bicycle seatpost. The internal thread of the lock hole 19 is tightly threaded with the external thread body 40, requiring a certain torque to be applied to the lock cylinder 15 to unlock it. This locks the lever arm 1 and prevents it from swinging. Without the special unlocking tool 20 of this solution, the bicycle seatpost cannot be pulled upward from the frame seatpost clamp, thus achieving the anti-theft function of the saddle and seatpost.

[0025] When unlocking is required, align the insertion ring 22 at one end of the unlocking tool 20 into the annular unlocking groove 11, and then rotate and twist the lock cylinder 15. The rotation of the lock cylinder 15 is driven by the internal thread of the lock hole 19 to move outward along the axis, thereby finally separating the external thread body 40 at one end of the lock cylinder 15 from the lock hole 19, thus unlocking the lever arm 1. Then, swinging the lever arm 1 will cause the clamping unit 32 to tighten inward and relax outward under the swing of the lever arm 1.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An anti-theft quick-release tube clamp for a bicycle saddle, comprising a clamp (9), a clamp tensioning unit (32), a locking unit (10), and a lever arm (1). The lever arm (1) is located outside the clamp (9). One end of the lever arm (1) is driven to connect to the clamp tensioning unit (32). The clamp tensioning unit (32) performs inward tightening and outward expansion movements under the swing of the lever arm (1). When the clamp (9) is tightened inward, the other end of the lever arm (1) is connected to the clamp (9) through the locking unit (10), thereby locking the lever arm (1). The locking unit (10) includes a bolt (18), a lock cylinder seat (14), and a lock cylinder (15). The bolt (18) is fixed to the end of the lever arm (1), and the lock cylinder seat (14) is fixed to the side of the clamp (9). The lock cylinder (15) rotates in the lock cylinder seat (14). In the locked state, the bolt (18) and the lock cylinder seat (14) are locked to each other under the constraint of the lock cylinder (15). The bolt (18) and the lock cylinder seat (14) are unlocked and locked by the rotation of the lock cylinder (15). A lock groove (16) is provided on one side of the lock cylinder seat (14), and a lock hole (19) is provided on the lock tongue (18). The lock tongue (18) can swing with the lever arm (1) to be inserted into the lock groove (16), so that the lock cylinder (15) locks the lock hole (19). The lock cylinder seat (14) is provided with a lock cylinder hole (13), and the columnar lock cylinder (15) moves in the lock cylinder hole (13). The lock hole (19) is provided with an internal thread; one end of the lock cylinder (15) has an external thread body (40) that mates with the internal thread of the lock hole (19). In the locked state, the internal thread of the lock hole (19) and the external thread body (40) are threadedly engaged.

2. The anti-theft quick-release clamp for a bicycle saddle according to claim 1, characterized in that: The clamp (9) is an open-loop structure with a certain elasticity; the two ends of the clamp (9) of the open-loop structure are integrally connected with the first hole seat (5) and the second hole seat (7), and the clamp tightening unit (32) makes the first hole seat (5) and the second hole seat (7) move closer or further away from each other under the swing of the lever arm (1).

3. The anti-theft quick-release clamp for a bicycle saddle according to claim 2, characterized in that: The clamp tightening unit (32) includes a pull rod (6), a pull rod end (8), a pressure block (4), a camshaft (3) and a cam (2); one end of the pull rod (6) is vertically fixedly connected to the camshaft (3), the cam (2) rotates on the camshaft (3), and the other end of the pull rod (6) is fixedly connected to the pull rod end (8); the pull rod (6) moves sequentially along the axial direction through the pull rod through hole on the pressure block (4), the first hole seat (5) and the second hole seat (7); the pressure block (4) is between the cam (2) and the first hole seat (5), and the lever arm (1) is fixedly connected to the cam (2) at the end away from the locking unit (10).

4. The anti-theft quick-release clamp for a bicycle saddle according to claim 3, characterized in that: The lock cylinder (15) is provided with an annular unlocking groove (11) at one end away from the external thread body (40), and at least one locking piece (12) is provided in the annular unlocking groove (11); the matching unlocking tool (20) has a plug ring (22) adapted to the annular unlocking groove (11) at one end, and the plug ring (22) is provided with a slot (21) adapted to the locking piece (12) in the annular unlocking groove (11).

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