CN219406791U - Bicycle toothed disc with tooth part capable of being quickly disassembled and replaced - Google Patents
Bicycle toothed disc with tooth part capable of being quickly disassembled and replaced Download PDFInfo
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- CN219406791U CN219406791U CN202223508599.9U CN202223508599U CN219406791U CN 219406791 U CN219406791 U CN 219406791U CN 202223508599 U CN202223508599 U CN 202223508599U CN 219406791 U CN219406791 U CN 219406791U
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Abstract
The utility model relates to the technical field of bicycle toothed plates, and discloses a bicycle toothed plate with quickly detachable and replaceable tooth parts. According to the utility model, the square hole of the ear block is inserted into the outer surface of the square block by arranging the small arc retainer ring, the large arc retainer ring, the ear block, the locking bolt and other parts, the center of the front surface of the square block is also provided with the screw hole, the ear block can be fixed after the locking bolt is screwed into the screw hole of the square block, the large arc rack can be further fixed on the front surface of the tray body, and when the tooth part is severely worn, the large arc rack can be detached only by detaching the locking bolt and the knob, so that the replacement is convenient, the whole dental tray is not required to be replaced, and the cost is reduced.
Description
Technical Field
The utility model relates to the technical field of bicycle crankset, in particular to a bicycle crankset with a tooth part capable of being rapidly disassembled and replaced.
Background
The bicycle is an environment-friendly and energy-saving riding instead of walking tool, and the dental tray is a part of the bicycle where the middle shaft and the crank are connected. People pedal to drive the crank, so as to drive the toothed disc to rotate, and finally drive the rear wheel to rotate through the chain and the flywheel, so as to provide power and complete the whole transmission chain of the bicycle.
The general tooth portion of current bicycle chain wheel is not detachable, but the tooth portion wearing and tearing of chain wheel are serious after the bicycle uses for a long time, and the circumstances that the chain skids and drops often can appear if not changing the chain wheel, and holistic change chain wheel then often the expense is higher. And the common bicycle chain wheel is time-consuming and labor-consuming when being connected with a chain. In view of the above, we propose a bicycle crankset with a tooth portion that can be quickly removed and replaced to solve the above-mentioned problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides the bicycle chain wheel with the tooth parts capable of being quickly disassembled and replaced, which has the advantages that the tooth parts of the bicycle chain wheel can be quickly disassembled and replaced, and the connection of the chain wheel and the chain is convenient, thereby solving the technical problems.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the bicycle toothed disc with the tooth parts capable of being quickly detached and replaced comprises a flying disc, wherein the front surface of the flying disc is fixedly connected with a connecting disc body, the front surface of the disc body is fixedly connected with a square block, the square block is internally connected with a locking bolt in a threaded manner, the front surface of the disc body is provided with a tooth part component, the front center of the disc body is fixedly connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a square tube, and the outer surface of the square tube is connected with a crank component;
the tooth portion assembly comprises a small arc-shaped rack, a large arc-shaped rack, a tenon block, a small arc-shaped retainer ring, a large arc-shaped retainer ring, an ear block, an extension block, a groove, a fixing block and a knob, wherein the two ends of the small arc-shaped rack are connected with the large arc-shaped rack in a clamping mode, the tenon block is fixedly connected with the two ends of the small arc-shaped rack, the small arc-shaped retainer ring is fixedly connected with the front face of the small arc-shaped rack, the large arc-shaped retainer ring is fixedly connected with the front face of the large arc-shaped rack, the ear block and the extension block are fixedly connected on the inner axial face of the large arc-shaped rack, the groove is formed in the side face of the extension block, the fixing block is fixedly connected with the inner axial face of the small arc-shaped rack, and the knob is arranged on the front face of the fixing block.
Preferably, a screw hole is formed in the front face of the disc body, and the screw hole is internally connected with a knob in a threaded manner.
Through the technical scheme, the through hole is formed in the front surface of the fixed block, the screw rod of the knob can be inserted into the through hole, the small arc-shaped rack is fixed on the front surface of the disc body after the knob is connected with the screw hole, when the outer surface of the tooth part component is sleeved with the chain, the knob is only required to be unscrewed, and then the fixed block is pulled downwards to drive the small arc-shaped rack to move downwards, so that the circumference of the outer surface of the tooth part component can be reduced, and the chain is sleeved on the outer surface of the small arc-shaped rack and the large arc-shaped rack to form a complete circular rack more conveniently.
Preferably, the tenon block is slidingly connected in the groove.
Through above-mentioned technical scheme, after the pulling fixed block drives little arc rack downstream, the tenon piece at little arc rack both ends is at the slot internal downstream of extension piece, resets little arc rack and only need upwards to carry the fixed block and then make the tenon piece card go into in the big arc rack, so can strengthen the compactness that little arc rack and big arc rack are connected.
Preferably, the lug block is provided with a square hole on the front face, and the square hole is inserted with the square block.
Through above-mentioned technical scheme, insert the square hole of ear piece on the surface of square, also offered a screw in the positive center of square, can fix the ear piece after using the locking bolt to screw in the screw of square, and then can fix big arc rack in the front of disk body, and when needing to change big arc rack and little arc rack, only need dismantle locking bolt and knob just can dismantle it, so can conveniently change, and need not to change whole tooth dish, reduce the cost.
Preferably, the small arc-shaped check ring is mutually attached to the two ends of the large arc-shaped check ring.
Through above-mentioned technical scheme, the ring that little arc retaining ring and big arc retaining ring constitute a complete ring under the normality, and the external diameter of ring equals the external diameter of frisbee, and ring and frisbee that little arc retaining ring and big arc retaining ring constitute set up respectively in the both sides of the circular rack that little arc rack and big arc rack formed, so can prevent the chain slippage.
Preferably, the crank assembly comprises a connecting rod, a crank body and an inner hexagon bolt, wherein the connecting rod is fixedly connected to the front face of the disc body, the front face of the connecting rod is fixedly connected with the crank body, and the front face of the crank body is in threaded connection with the inner hexagon bolt.
Through above-mentioned technical scheme, reverse screw hole has been seted up to the one end of crank body for connect pedal, the screw thread has been seted up to hexagon socket head cap screw's nut surface, and hexagon socket head cap screw's nut and crank body threaded connection, hexagon socket head cap screw's screw rod and the threaded connection of side's pipe, when needs dismantle whole tooth dish, only need use the instrument to screw off hexagon socket head cap screw, then use to pull the flying disc, thereby take out parts such as flying disc and disk body from side's pipe, overall structure makes things convenient for tooth dish to dismantle.
Compared with the prior art, the utility model provides the bicycle dental disc with the tooth part capable of being rapidly disassembled and replaced, which has the following beneficial effects:
1. according to the utility model, the square hole of the ear block is inserted into the outer surface of the square block by arranging the small arc retainer ring, the large arc retainer ring, the ear block, the locking bolt and other parts, the center of the front surface of the square block is also provided with the screw hole, the ear block can be fixed after the locking bolt is screwed into the screw hole of the square block, the large arc rack can be further fixed on the front surface of the tray body, and when the tooth part is severely worn, the large arc rack can be detached only by detaching the locking bolt and the knob, so that the replacement is convenient, the whole dental tray is not required to be replaced, and the cost is reduced.
2. According to the utility model, by arranging the small arc-shaped retainer ring, the large arc-shaped retainer ring, the tenon block, the extension block and the like, when the chain is sleeved on the outer surface of the tooth assembly, the knob is only required to be unscrewed, and then the fixing block is pulled downwards to drive the small arc-shaped rack to move downwards, so that the circumference of the outer surface of the tooth assembly can be reduced, the chain is more conveniently sleeved on the outer surface of the small arc-shaped rack and the large arc-shaped rack to form a complete circular ring matched flying disc, and the chain slipping can be prevented.
Drawings
FIG. 1 is a schematic perspective view of the structure of the present utility model;
FIG. 2 is an exploded schematic view of the structure of the present utility model;
FIG. 3 is an exploded view of the crank assembly of the present utility model.
Wherein: 1. a flying disc; 2. a tray body; 3. a square block; 4. a locking bolt; 5. a tooth assembly; 51. a small arc-shaped rack; 52. a large arc-shaped rack; 53. tenon blocks; 54. a small arc-shaped retainer ring; 55. a large arc retainer ring; 56. ear pieces; 57. extending the block; 58. a groove; 59. a fixed block; 510. a knob; 6. a rotating shaft; 7. square tubes; 8. a crank assembly; 81. a connecting rod; 82. a crank body; 83. an inner hexagon bolt.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
1-2, the bicycle toothed disc with the rapidly detachable and replaceable tooth part comprises a flying disc 1, wherein a connecting disc body 2 is fixed on the front surface of the flying disc 1, a square block 3 is fixedly connected on the front surface of the disc body 2, a locking bolt 4 is connected in the square block 3 in a threaded manner, a tooth part assembly 5 is arranged on the front surface of the disc body 2, a rotating shaft 6 is fixedly connected in the center of the front surface of the disc body 2, one end of the rotating shaft 6 is fixedly connected with a square tube 7, and the outer surface of the square tube 7 is connected with a crank assembly 8;
the tooth part assembly 5 comprises a small arc-shaped rack 51, a large arc-shaped rack 52, a tenon block 53, a small arc-shaped retainer ring 54, a large arc-shaped retainer ring 55, an ear block 56, an extension block 57, a groove 58, a fixing block 59 and a knob 510, wherein the two ends of the small arc-shaped rack 51 are clamped with the large arc-shaped rack 52, the two ends of the small arc-shaped rack 51 are fixedly connected with the tenon block 53, the front surface of the small arc-shaped rack 51 is fixedly connected with the small arc-shaped retainer ring 54, the front surface of the large arc-shaped rack 52 is fixedly connected with the large arc-shaped retainer ring 55, the ear block 56 and the extension block 57 are fixedly connected on the inner axial surface of the large arc-shaped rack 52, the side surface of the extension block 57 is provided with the groove 58, the inner axial surface of the small arc-shaped rack 51 is fixedly connected with the fixing block 59, and the front surface of the fixing block 59 is provided with the knob 510.
Specifically, a screw hole is formed in the front surface of the tray body 2, and the screw hole is internally connected with the knob 510 in a threaded manner. The advantage is that set up a through-hole in the front of fixed block 59, the screw rod of knob 510 can alternate with this through-hole in, make little arc rack 51 fixed in the front of disk body 2 through being connected knob 510 with the screw, when the surface at tooth portion subassembly 5 is overlapped the chain, only need unscrew knob 510, then downward pulling fixed block 59 drives little arc rack and moves down, so just can reduce the girth of tooth portion subassembly 5 surface, more convenient with the chain cover make up the surface of a complete circular rack with little arc rack 51 and big arc rack 52.
Specifically, the tongue 53 is slidably coupled within the groove 58. The advantage is that when the fixed block 59 is pulled to drive the small arc-shaped rack 51 to move downwards, the tenon blocks 53 at two ends of the small arc-shaped rack 51 move downwards in the groove 58 of the extension block 57, and the small arc-shaped rack 51 is reset only by lifting the fixed block 59 upwards and then enabling the tenon blocks 53 to be clamped into the large arc-shaped rack 52, so that the connection tightness of the small arc-shaped rack 51 and the large arc-shaped rack 52 can be enhanced.
Specifically, the ear block 56 is provided with a square hole on the front surface, and the square hole is inserted with the square 3. The advantage is, insert the square hole of ear piece 56 on the surface of square 3, also offered a screw in square 3 positive center, can fix ear piece 56 after using locking bolt 4 to screw in square 3's screw, and then can fix big arc rack 52 in the front of disk body 2, and when needing to change big arc rack 52 and little arc rack 51, only need dismantle locking bolt 4 and knob 510 just can dismantle it, so can conveniently change, and need not to change whole tooth dish, reduce cost.
Specifically, the two ends of the small arc-shaped retainer ring 54 and the large arc-shaped retainer ring 55 are attached to each other. The advantage is that small arc retaining ring 54 and big arc retaining ring 55 constitute a complete ring under the normal state, and the external diameter of ring is the same as the external diameter of flying disc 1, and the ring and the flying disc 1 that small arc retaining ring 54 and big arc retaining ring 55 constitute set up respectively in the both sides of the circular rack that small arc rack 51 and big arc rack 52 constitute, so can prevent the chain slippage.
Embodiment two:
as shown in fig. 3, as an improvement over the previous embodiment. Specifically, the crank assembly 8 includes a connecting rod 81, a crank body 82 and an inner hexagon bolt 83, the connecting rod 81 is fixedly connected to the front face of the disc 2, the front face of the connecting rod 81 is fixedly connected with the crank body 82, and the front face of the crank body 82 is in threaded connection with the inner hexagon bolt 83. The advantage is, reverse screw hole has been seted up to the one end of crank body 82 for connect pedal, and the screw thread has been seted up to hexagon socket head cap screw 83's nut surface, and hexagon socket head cap screw 83's nut and crank body 82 threaded connection, hexagon socket head cap screw 83's screw rod and square pipe 7's threaded connection, when needs dismantle whole tooth dish, only need use the instrument to screw off hexagon socket head cap screw 83, then use to pull flying disc 1 to take out parts such as flying disc 1 and disk body 2 from square pipe 7, overall structure makes things convenient for tooth dish to dismantle.
When the chain is used, when the chain is required to be connected with the chain wheel, only the knob 510 is required to be unscrewed, then the fixing block 59 is pulled downwards to drive the small arc-shaped rack to move downwards, so that the circumference of the outer surface of the tooth part assembly 5 can be reduced, the chain is more conveniently sleeved on the outer surface of the small arc-shaped rack 51 and the large arc-shaped rack 52 to form a complete circular rack, then the small arc-shaped rack 51 is reset, only the fixing block 59 is required to be pulled upwards, then the tenon block 53 is clamped into the large arc-shaped rack 52, the small arc-shaped retainer ring 54 and the large arc-shaped retainer ring 55 form a complete circular ring, the chain is prevented from slipping by matching with the flying disc 1, and when the large arc-shaped rack 52 and the small arc-shaped rack 51 are required to be replaced, the locking bolt 4 and the knob 510 are required to be detached, so that the whole chain wheel is not required to be replaced, and the cost is reduced.
Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a but tooth portion quick detach changes bicycle toothed disc, includes the frisbee, its characterized in that: the front face of the flying disc is fixedly connected with a square block, the square block is internally connected with a locking bolt in a threaded manner, the front face of the disc is provided with a tooth part assembly, the center of the front face of the disc is fixedly connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a square tube, and the outer surface of the square tube is connected with a crank assembly;
the tooth portion assembly comprises a small arc-shaped rack, a large arc-shaped rack, a tenon block, a small arc-shaped retainer ring, a large arc-shaped retainer ring, an ear block, an extension block, a groove, a fixing block and a knob, wherein the two ends of the small arc-shaped rack are connected with the large arc-shaped rack in a clamping mode, the tenon block is fixedly connected with the two ends of the small arc-shaped rack, the small arc-shaped retainer ring is fixedly connected with the front face of the small arc-shaped rack, the large arc-shaped retainer ring is fixedly connected with the front face of the large arc-shaped rack, the ear block and the extension block are fixedly connected on the inner axial face of the large arc-shaped rack, the groove is formed in the side face of the extension block, the fixing block is fixedly connected with the inner axial face of the small arc-shaped rack, and the knob is arranged on the front face of the fixing block.
2. The bicycle crankset with rapidly detachable and replaceable tooth according to claim 1, wherein: the front of the tray body is provided with a screw hole, and the screw hole is internally connected with a knob in a threaded manner.
3. The bicycle crankset with rapidly detachable and replaceable tooth according to claim 1, wherein: the tenon block is connected in the groove in a sliding mode.
4. The bicycle crankset with rapidly detachable and replaceable tooth according to claim 1, wherein: the lug block is provided with a square hole on the front face, and the square hole is inserted with the square block.
5. The bicycle crankset with rapidly detachable and replaceable tooth according to claim 1, wherein: the small arc-shaped check ring is mutually attached to the two ends of the large arc-shaped check ring.
6. The bicycle crankset with rapidly detachable and replaceable tooth according to claim 1, wherein: the crank assembly comprises a connecting rod, a crank body and an inner hexagon bolt, wherein the connecting rod is fixedly connected to the front face of the disc body, the front face of the connecting rod is fixedly connected with the crank body, and the front face of the crank body is in threaded connection with the inner hexagon bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223508599.9U CN219406791U (en) | 2022-12-27 | 2022-12-27 | Bicycle toothed disc with tooth part capable of being quickly disassembled and replaced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223508599.9U CN219406791U (en) | 2022-12-27 | 2022-12-27 | Bicycle toothed disc with tooth part capable of being quickly disassembled and replaced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219406791U true CN219406791U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223508599.9U Active CN219406791U (en) | 2022-12-27 | 2022-12-27 | Bicycle toothed disc with tooth part capable of being quickly disassembled and replaced |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219406791U (en) |
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2022
- 2022-12-27 CN CN202223508599.9U patent/CN219406791U/en active Active
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