Bicycle seat tube locking device

Abstract

The utility model discloses a bicycle seat tube locking device which comprises a base and a seat stool, the seat stool is located above the base, a seat tube is fixedly installed below the seat stool, the base is connected with the seat tube in a sliding and sleeved mode, an installation rod is arranged in the base, a first adjusting rod is installed in the installation rod in a sliding mode, and a second adjusting rod is installed in the first adjusting rod. A second adjusting rod is slidably mounted in the first adjusting rod, the lower end of the saddle pipe is fixedly connected with the upper end of the second adjusting rod, a plurality of sets of inserting grooves distributed at equal intervals are formed in the saddle pipe, two sets of symmetrically-distributed mounting frames are slidably mounted in the base, and inserting rods are fixedly mounted on the two sets of mounting frames; the inserting rod and the inserting groove are correspondingly arranged, rapid clamping locking or loosening of the saddle pipe is achieved through the two sets of installation frames and the inserting rod under the action that the handle is matched with the gear and the rack, and the inserting rod is clamped to the saddle pipe through the inserting groove, so that the risk of slipping does not exist even if the stool bears large pressure.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, specifically a bicycle seatpost locking device. Background Technology

[0002] The main function of a bicycle seat lock is to ensure that the bicycle seat does not slide or move during riding, thereby ensuring the stability and safety of riding. By locking the bicycle seat, it can be ensured that the seat will not slide due to bumps or vibrations during riding, keeping the seat in a fixed position and avoiding affecting the riding experience and safety due to seat movement. Currently, the bicycle seat post is inserted into the bicycle bottom tube. The end of the bicycle bottom tube has a longitudinal through groove, and a clamping ring is installed at the end of the bottom tube. The clamping ring is fastened with bolts or eccentric quick releases, which deforms the end of the bicycle bottom tube, thereby clamping the bicycle seat post.

[0003] In existing technologies, bicycle seat fixing largely relies on the squeezing and friction between the tension ring and the seat post to secure the seat. However, when the bicycle seat is under heavy load during riding, there is still a possibility of slipping. Furthermore, the seat post frequently rubs against the bicycle frame during height adjustment, making it prone to wear and further affecting the tension ring's ability to secure the seat post. Utility Model Content

[0004] The purpose of this invention is to provide a bicycle seatpost locking device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bicycle seatpost locking device, comprising a base and a seat, the seat being located above the base, a seatpost being fixedly installed below the seat, the base being slidably sleeved with the seatpost, a mounting rod being provided inside the base, a first adjusting rod being slidably installed inside the mounting rod, a second adjusting rod being slidably installed inside the first adjusting rod, the lower end of the seatpost being fixedly connected to the upper end of the second adjusting rod, multiple sets of equally spaced slots being provided on the seatpost, two sets of symmetrically distributed mounting brackets being slidably installed inside the base, each set of mounting brackets being fixedly installed with a plug rod, the plug rod being correspondingly arranged with the slot, the plug rod being movably engaged with the seatpost through the slot, a handle being rotatably installed on the base, a gear being sleeved on the handle, racks being fixedly installed on each set of mounting brackets, a threaded rod being rotatably provided inside the mounting rod, and a threaded tube being rotatably provided inside the first adjusting rod.

[0006] As a further preferred embodiment of this technical solution, a stop block is sleeved on the insertion rod, the insertion rod is slidably connected to the base through the stop block, and a spring is sleeved on the insertion rod, with both ends of the spring being fixedly connected to the stop block and the base, respectively.

[0007] As a further preferred embodiment of this technical solution, the two sets of mounting brackets are symmetrically distributed about the seat tube, and the two sets of mounting brackets are symmetrically distributed on both sides of the handle. Both sets of racks are meshed with gears. A torsion spring is sleeved on the handle, and the two ends of the torsion spring are fixedly connected to the handle and the base, respectively.

[0008] As a further preferred embodiment of this technical solution, the lower end of the threaded rod passes through the mounting rod and is rotatably connected to the mounting rod via a bearing; the upper end of the threaded rod passes through the first adjusting rod and is threadedly connected to the first adjusting rod; the threaded tube passes through the first adjusting rod and is rotatably connected to the first adjusting rod via a bearing; and the upper end of the threaded tube passes through the second adjusting rod and is threadedly connected to the second adjusting rod.

[0009] As a further preferred embodiment of this technical solution, the threaded rod is provided with two sets of symmetrically distributed limiting grooves, and the threaded tube is provided with two sets of symmetrically distributed limiting blocks. The limiting blocks are correspondingly arranged with the limiting grooves, and the threaded tube is slidably sleeved with the threaded rod through the limiting blocks.

[0010] As a further preferred embodiment of this technical solution, a first bevel gear is sleeved on the lower end of the threaded rod, and a second bevel gear is provided inside the mounting rod, with the second bevel gear meshing with the first bevel gear.

[0011] As a further preferred embodiment of this technical solution, the second bevel gear is rotatably connected to the mounting rod via a rotating rod, the rotating rod passing through the mounting rod and the base and being rotatably connected to both the rotating rod and the base via bearings.

[0012] This utility model provides a bicycle seatpost locking device, which has the following beneficial effects:

[0013] (1) This utility model achieves quick locking or unlocking of the seat tube by setting two sets of mounting brackets and insert rods in conjunction with the handle, gears and racks. The insert rod locks the seat tube through the slot so that the seat will not slip even when subjected to greater pressure, which increases the safety of the locking device and effectively extends the service life of the seat tube.

[0014] (2) The present invention uses the mounting rod to adjust the position of the seat tube and the seat in conjunction with the first adjustment rod and the second adjustment rod, so that the friction between the seat tube and the base is reduced during the height adjustment of the seat, avoiding wear that may be caused by the seat tube during long-term height adjustment, thereby reducing the service life of the seat tube and the seat. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is a schematic diagram of the structure of the seat tube of this utility model;

[0017] Figure 3 For the utility model Figure 2 Enlarged view of the structure at point A;

[0018] Figure 4 This is a sectional view of the mounting rod of this utility model;

[0019] In the diagram: 1. Base; 2. Seat; 3. Seat tube; 4. Mounting rod; 5. First adjusting rod; 6. Second adjusting rod; 7. Threaded rod; 8. Threaded tube; 9. Limiting groove; 10. Limiting block; 11. First bevel gear; 12. Second bevel gear; 13. Slot; 14. Mounting bracket; 15. Insert rod; 16. Stop block; 17. Spring; 18. Rack; 19. Handle; 20. Gear; 21. Torsion spring; 22. Rotating rod. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, a bicycle seatpost locking device includes a base 1 and a seat 2. The seat 2 is located above the base 1, and a seatpost 3 is fixedly installed below the seat 2. The base 1 and the seatpost 3 are slidably connected. A mounting rod 4 is provided inside the base 1, and a first adjusting rod 5 is slidably installed inside the mounting rod 4. A second adjusting rod 6 is slidably installed inside the first adjusting rod 5. The lower end of the seatpost 3 is fixedly connected to the upper end of the second adjusting rod 6. Multiple sets of equally spaced slots 13 are provided on the seatpost 3. Two sets of symmetrically distributed mounting brackets 14 are slidably installed inside the base 1. Each mounting bracket 14 is fixedly equipped with a plug rod 15, which corresponds to a slot 13. The plug rod 15 is movably engaged with the seat tube 3 through the slot 13. A handle 19 is rotatably mounted on the base 1, and a gear 20 is sleeved on the handle 19. Both sets of mounting brackets 14 are fixedly equipped with racks 18. A threaded rod 7 is rotatably provided inside the mounting rod 4, and a threaded tube 8 is rotatably provided inside the first adjusting rod 5. After the seat tube 3 is adjusted to a suitable position, the engagement between the two sets of plug rods 15 and slots 13 can effectively limit the height of the seat tube 3 and the seat 2. To prevent the seat post 3 from slipping under heavy load on the seat 2, the seat post 3 cannot slide freely in the base 1 under the action of the insert rod 15 and the slot 13. A stop block 16 is sleeved on the insert rod 15, and the insert rod 15 is slidably connected to the base 1 through the stop block 16. A spring 17 is sleeved on the insert rod 15, and the two ends of the spring 17 are fixedly connected to the stop block 16 and the base 1, respectively. Two sets of mounting brackets 14 are symmetrically distributed about the seat post 3. The two sets of mounting brackets 14 are symmetrically distributed on both sides of the handle 19. Both sets of racks 18 are meshed with gears 20. A torsion bar is sleeved on the handle 19. The two ends of the rotating spring 21 are fixedly connected to the handle 19 and the base 1, respectively. When the height of the seat tube 3 needs to be adjusted, the handle 19 is rotated, which drives the gear 20 to rotate synchronously. The two sets of racks 18 that are meshed with the gear 20 simultaneously drive the two sets of mounting brackets 14 to move to both sides, thereby causing the two sets of insert rods 15 to move the two sets of stops 16 synchronously and compress the spring 17. After the two sets of insert rods 15 leave the slot 13, the locking of the seat tube 3 is released, and the seat tube 3 can slide in the base 1 to complete the adjustment of the height of the seat 2.

[0022] like Figure 2 and Figure 4As shown, the lower end of the threaded rod 7 passes through the mounting rod 4 and is rotatably connected to the mounting rod 4 via a bearing. The upper end of the threaded rod 7 passes through the first adjusting rod 5 and is threadedly connected to the first adjusting rod 5. The threaded tube 8 passes through the first adjusting rod 5 and is rotatably connected to the first adjusting rod 5 via a bearing. The upper end of the threaded tube 8 passes through the second adjusting rod 6 and is threadedly connected to the second adjusting rod 6. Two sets of symmetrically distributed limiting grooves 9 are provided on the threaded rod 7. Two sets of symmetrically distributed limiting blocks 10 are provided inside the threaded tube 8. The limiting blocks 10 are correspondingly set with the limiting grooves 9. The threaded tube 8 is slidably sleeved with the threaded rod 7 through the limiting blocks 10. A first bevel gear 11 is sleeved on the lower end of the threaded rod 7. A second bevel gear 12 is provided inside the mounting rod 4. The second bevel gear 12 is meshed with the first bevel gear 11. The second bevel gear 12 is rotatably connected to the mounting rod 4 via a rotating rod 22. The rotating rod 22 passes through the mounting rod 4. 4 and base 1 are rotatably connected to rotating rod 22 and base 1 respectively through bearings. The rotation of rotating rod 22 drives the rotation of second bevel gear 12, which cooperates with first bevel gear 11 to realize the rotation of threaded rod 7. Under the limiting action of mounting rod 4, first adjusting rod 5 slides. During the rotation of threaded rod 7, threaded tube 8 rotates synchronously through the limiting action of limiting groove 9 and limiting block 10. Under the limiting action of first adjusting rod 5, second adjusting rod 6 slides in first adjusting rod 5 to complete the height adjustment of seat tube 3 and seat 2. During the adjustment of seat tube 3, it will not rub against base 1, reducing the possibility of wear of seat tube 3. After seat tube 3 is adjusted to the appropriate position, under the action of torsion spring 21 and spring 17, two sets of insert rods 15 automatically insert into corresponding slots 13 to complete the positioning and locking of seat tube 3.

[0023] This utility model provides a bicycle seatpost locking device. The specific working principle is as follows: After the seatpost 3 is adjusted to a suitable position, the engagement between the two sets of insert rods 15 and the slots 13 effectively limits the height of the seatpost 3 and the seat 2, preventing the seatpost 3 from slipping when the seat 2 is under heavy load. Under the action of the insert rods 15 and the slots 13, the seatpost 3 cannot slide freely in the base 1. When the height of the seatpost 3 needs to be adjusted, the handle 19 is turned, causing the gear 20 to rotate synchronously. The two sets of racks 18, meshing with the gear 20, simultaneously drive the two sets of mounting brackets 14 to move to both sides, thereby causing the two sets of insert rods 15 to synchronously drive the two sets of stops 16 to move and compress the spring 17. After the two sets of insert rods 15 leave the slots 13, the locking of the seatpost 3 is released, and the seatpost 3 can move freely in the base 1. The height of the seat tube 2 is adjusted by sliding the rod 22. The rotation of the rod 22 drives the rotation of the second bevel gear 12, which in turn drives the rotation of the threaded rod 7 in conjunction with the first bevel gear 11. Under the limiting action of the mounting rod 4, the first adjusting rod 5 slides. During the rotation of the threaded rod 7, the threaded tube 8 rotates synchronously through the limiting action of the limiting groove 9 and the limiting block 10. Under the limiting action of the first adjusting rod 5, the second adjusting rod 6 slides in the first adjusting rod 5, thus completing the height adjustment of the seat tube 3 and the seat 2. The seat tube 3 will not rub against the base 1 during the adjustment process, reducing the possibility of wear on the seat tube 3. After the seat tube 3 is adjusted to the appropriate position, under the action of the torsion spring 21 and the spring 17, the two sets of insert rods 15 automatically insert into the corresponding slots 13 to complete the positioning and locking of the seat tube 3.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bicycle seatpost locking device, comprising a base (1) and a seat (2), characterized in that: The seat (2) is located above the base (1), and a seat tube (3) is fixedly installed below the seat (2). The base (1) and the seat tube (3) are slidably connected. The base (1) is provided with an installation rod (4), and a first adjusting rod (5) is slidably installed in the installation rod (4). A second adjusting rod (6) is slidably installed in the first adjusting rod (5). The lower end of the seat tube (3) is fixedly connected to the upper end of the second adjusting rod (6). Multiple sets of equally spaced slots (13) are provided on the seat tube (3). Two sets of slots are slidably installed in the base (1). The mounting brackets (14) are distributed, and each of the two sets of mounting brackets (14) is fixedly mounted with a plug rod (15). The plug rod (15) is correspondingly set with the slot (13). The plug rod (15) is movably engaged with the seat tube (3) through the slot (13). A handle (19) is rotatably mounted on the base (1). A gear (20) is sleeved on the handle (19). A rack (18) is fixedly mounted on each of the two sets of mounting brackets (14). A threaded rod (7) is rotatably provided inside the mounting rod (4). A threaded tube (8) is rotatably provided inside the first adjusting rod (5).

2. The bicycle seatpost locking device according to claim 1, characterized in that: A stop (16) is sleeved on the insertion rod (15), and the insertion rod (15) is slidably connected to the base (1) through the stop (16). A spring (17) is sleeved on the insertion rod (15), and the two ends of the spring (17) are fixedly connected to the stop (16) and the base (1) respectively.

3. The bicycle seatpost locking device according to claim 1, characterized in that: The two sets of mounting brackets (14) are symmetrically distributed about the seat tube (3). The two sets of mounting brackets (14) are symmetrically distributed on both sides of the handle (19). The two sets of racks (18) are meshed with the gears (20). A torsion spring (21) is sleeved on the handle (19). The two ends of the torsion spring (21) are fixedly connected to the handle (19) and the base (1) respectively.

4. A bicycle seatpost locking device according to claim 1, characterized in that: The lower end of the threaded rod (7) passes through the mounting rod (4) and is rotatably connected to the mounting rod (4) through a bearing. The upper end of the threaded rod (7) passes through the first adjusting rod (5) and is threadedly connected to the first adjusting rod (5). The threaded tube (8) passes through the first adjusting rod (5) and is rotatably connected to the first adjusting rod (5) through a bearing. The upper end of the threaded tube (8) passes through the second adjusting rod (6) and is threadedly connected to the second adjusting rod (6).

5. A bicycle seatpost locking device according to claim 1, characterized in that: The threaded rod (7) has two sets of symmetrically distributed limiting grooves (9), and the threaded tube (8) has two sets of symmetrically distributed limiting blocks (10). The limiting blocks (10) are correspondingly arranged with the limiting grooves (9), and the threaded tube (8) is slidably sleeved with the threaded rod (7) through the limiting blocks (10).

6. A bicycle seatpost locking device according to claim 1, characterized in that: The lower end of the threaded rod (7) is fitted with a first bevel gear (11), and the mounting rod (4) is provided with a second bevel gear (12), which meshes with the first bevel gear (11).

7. A bicycle seatpost locking device according to claim 6, characterized in that: The second bevel gear (12) is rotatably connected to the mounting rod (4) via a rotating rod (22). The rotating rod (22) passes through the mounting rod (4) and the base (1) and is rotatably connected to the rotating rod (22) and the base (1) via bearings.

Images