Angle-adjustable carbon fiber bicycle crank

Abstract

The utility model discloses an angle-adjustable carbon fiber bicycle crank which comprises a fluted disc and a movable plate, a middle shaft is installed inside the fluted disc, and a crank body is installed at the front end of the outer portion of the middle shaft. According to the angle-adjustable carbon fiber bicycle crank, a movable plate and a rubber pad are arranged, a mounting bolt is screwed out from the interior of a fixing groove to enable the fixing plate to be unfixed, then a cushion block is pushed to slide at the top end of a supporting plate, the top end of the cushion block is inclined, and the cushion block can support the movable plate; the cushion block moves, the angle of the movable plate can be adjusted according to the requirements of a user, the comfort of the user can be improved by adjusting the angle of the movable plate, after the angle is adjusted, the mounting bolt is screwed into the fixing groove again to fix the fixing plate, and therefore the cushion block can be prevented from sliding accidentally; the problems that the inclination angle of a pedal is inconvenient to adjust according to the requirements of a user, and the comfort performance is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle parts, in particular to a carbon fiber bicycle crank with adjustable angle. Background Art

[0002] Bicycles are usually used as environmentally friendly means of transportation for commuting and traveling, bringing great convenience to people's travel. However, with the development of society, more and more people use bicycles as fitness equipment for cycling exercises and bicycle travel. The crank is one of the important components of a bicycle.

[0003] The crank is used to connect the pedals and the sprocket to provide power. There are still some problems with the common carbon fiber bicycle cranks. For example, most bicycle cranks have certain specifications, and the pedals are usually fixed, which makes it inconvenient to adjust the inclination angle of the pedals according to the needs of the user, and the comfort performance is poor.

[0004] Therefore, we propose a carbon fiber bicycle crank with adjustable angle to improve the above problems. Utility Model Content

[0005] The utility model aims to provide an angle-adjustable carbon fiber bicycle crank to solve the problem inconvenient to adjust the inclination angle of the pedal according to the needs of the user and the poor comfort performance mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an angle-adjustable carbon fiber bicycle crank, comprising a toothed disc and a movable plate, wherein a middle shaft is installed inside the toothed disc, a crank body is installed at the front end outside the middle shaft, a mounting sleeve is movably sleeved at the bottom end outside the crank body, a mounting rod is arranged at the front end of the mounting sleeve, a mounting sleeve is movably connected to the outside of the mounting rod, and an adjustment structure for adjusting the angle of the movable plate is arranged outside the mounting sleeve;

[0007] The adjustment structure includes a movable plate, a support plate and a pad. The top ends of both sides of the outside of the mounting sleeve are movably hinged with movable plates, the bottom ends of both sides of the mounting sleeve are welded with support plates, the top ends of the support plates are provided with fixed plates, the top ends of the fixed plates are fixedly connected with pads, the insides of the fixed plates and the support plates are respectively provided with fixing grooves, the insides of the fixing grooves are provided with mounting bolts, and the top ends of the outsides of the mounting bolts are provided with rubber pads.

[0008] Preferably, the pad block moves left and right at the top end of the support plate, and the pad block is arranged between the support plate and the movable plate.

[0009] Preferably, the fixed plate is fixed to the top of the support plate through a fixing groove and mounting bolts, and two groups of movable plates are provided.

[0010] Preferably, the rear end of the mounting sleeve is fixedly connected to a threaded sleeve, a threaded rod is provided inside the threaded sleeve, the rear end of the threaded rod is fixedly connected to a turning handle, the front end of the threaded rod is fixedly connected to a turning block, a turning groove is provided outside the turning block, the front end of the turning groove is fixedly connected to a connecting plate, the front end of the connecting plate is fixedly connected to a fixing block, and an adjustment hole is opened at the rear end of the crank body.

[0011] Preferably, the adjustment holes are provided in a plurality of groups, and the adjustment holes are arranged at equal intervals at the rear end inside the crank body.

[0012] Preferably, the fixed block is embedded in the adjusting hole, and the rotating block rotates in the rotating groove.

[0013] Preferably, a fixing sleeve is fixedly connected to the front end of the mounting sleeve, a mounting block is fixedly connected to the rear end of the mounting rod, and a mounting groove is provided inside the fixing sleeve.

[0014] Preferably, the outside of the mounting block is processed with an external thread, and the inside of the mounting groove is processed with an internal thread that cooperates with the external thread.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the carbon fiber bicycle crank with adjustable angle not only enables the user to adjust the angle of the pedal according to the needs of the user, and facilitates the adjustment of the length of the crank, but also facilitates the installation and disassembly of the mounting rod;

[0016] By providing a movable plate, a support plate, a fixed plate, a fixing groove, a pad, a mounting bolt and a rubber pad, when the angle of the movable plate needs to be adjusted, the mounting bolt is screwed out from the inside of the fixing groove to make the fixing plate lose its fixation, and then the pad is pushed to make the pad slide on the top of the supporting plate. Since the top of the pad is inclined and the pad can support the movable plate, the pad can move to adjust the angle of the movable plate according to the needs of the user. Adjusting the angle of the movable plate can improve the comfort of the user. After adjusting the angle, the mounting bolt is screwed into the inside of the fixing groove again to fix the fixing plate, thereby preventing the pad from accidentally sliding.

[0017] By providing an installation sleeve, an adjustment hole, a connecting plate, a threaded sleeve, a fixing block and a turning handle, the turning handle is turned when the height of the installation sleeve on the crank body needs to be adjusted, and the turning handle drives the threaded rod to rotate inside the threaded sleeve, so that the connecting plate can be pulled through the turning block and the turning groove to make the connecting plate detach from the inside of the adjustment hole, and then the installation sleeve is slid outside the crank body, and after the installation sleeve is adjusted to a suitable position, the turning handle is reversed to make the turning block push the connecting plate, so that the fixing block can be embedded in the inside of the adjustment hole to fix the installation sleeve, and the position of the installation sleeve outside the crank body can be adjusted to facilitate riders of different heights to ride bicycles;

[0018] By providing an installation groove, a fixing sleeve, a installation block, an external thread and a rubber pad, the rubber pad can prevent the installation bolt from being stuck inside the fixing groove, thereby facilitating the screwing of the installation bolt. When the installation rod needs to be disassembled and replaced, the installation block on the left side of the installation rod is rotated. Since the external thread on the outside of the installation block and the internal thread on the inside of the installation groove cooperate with each other, rotating the installation block can make the installation block detach from the inside of the installation groove, thereby facilitating the disassembly of the installation rod and replacing the pedal outside the installation rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0020] Figure 2 It is a side view structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of an enlarged side cross-sectional structure of the installation sleeve of the utility model;

[0022] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged cross-section structure at point A in the middle.

[0023] In the figure: 1. crank body; 2. mounting sleeve; 3. movable plate; 4. mounting rod; 5. geared disc; 6. middle shaft; 7. mounting sleeve; 8. adjustment hole; 9. connecting plate; 10. threaded sleeve; 11. supporting plate; 12. threaded rod; 13. rotating block; 14. rotating groove; 15. mounting groove; 16. fixing block; 17. fixing sleeve; 18. mounting block; 19. external thread; 20. turning handle; 21. fixing plate; 22. fixing groove; 23. spacer block; 24. mounting bolt; 25. rubber pad. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4 A carbon fiber bicycle crank with adjustable angle includes a toothed disc 5 and a movable plate 3, a middle shaft 6 is installed inside the toothed disc 5, a crank body 1 is installed at the front end outside the middle shaft 6, a mounting sleeve 2 is movably sleeved at the bottom end outside the crank body 1, a mounting rod 4 is arranged at the front end of the mounting sleeve 2, a mounting sleeve 7 is movably connected to the outside of the mounting rod 4, and an adjusting structure for adjusting the angle of the movable plate 3 is arranged outside the mounting sleeve 7;

[0026] The adjustment structure includes a movable plate 3, a support plate 11 and a cushion block 23. The top ends of both sides of the outside of the mounting sleeve 7 are movably hinged with the movable plate 3. The bottom ends of both sides of the mounting sleeve 7 are welded with the support plates 11. The top end of the support plate 11 is provided with a fixed plate 21. The top end of the fixed plate 21 is fixedly connected with a cushion block 23. The insides of the fixed plate 21 and the support plate 11 are respectively provided with fixed grooves 22. The insides of the fixed grooves 22 are provided with mounting bolts 24. The top ends of the outsides of the mounting bolts 24 are provided with rubber pads 25.

[0027] The pad 23 moves left and right at the top of the support plate 11. The pad 23 is arranged between the support plate 11 and the movable plate 3. The fixed plate 21 is fixed to the top of the support plate 11 through the fixing groove 22 and the mounting bolts 24. The movable plate 3 is provided with two groups.

[0028] Specifically, Figure 1 , Figure 2 and Figure 4 As shown, when the angle of the movable plate 3 needs to be adjusted, the mounting bolt 24 is screwed out from the inside of the fixing groove 22 to make the fixing plate 21 lose its fixation, and then the pad 23 is pushed to make the pad 23 slide on the top of the support plate 11. Since the top of the pad 23 is inclined and the pad 23 can support the movable plate 3, the movement of the pad 23 can adjust the angle of the movable plate 3 according to the needs of the user. Adjusting the angle of the movable plate 3 can improve the comfort of the user. After adjusting the angle, the mounting bolt 24 is screwed into the inside of the fixing groove 22 again to fix the fixing plate 21, thereby preventing the pad 23 from sliding accidentally.

[0029] Embodiment 2: The rear end of the installation sleeve 2 is fixedly connected with a threaded sleeve 10, a threaded rod 12 is arranged inside the threaded sleeve 10, a turning handle 20 is fixedly connected to the rear end of the threaded rod 12, a turning block 13 is fixedly connected to the front end of the threaded rod 12, a turning groove 14 is arranged outside the turning block 13, a connecting plate 9 is fixedly connected to the front end of the turning groove 14, a fixing block 16 is fixedly connected to the front end of the connecting plate 9, an adjusting hole 8 is opened at the rear end of the crank body 1, the adjusting holes 8 are opened in multiple groups, and the adjusting holes 8 are arranged at equal intervals at the rear end of the crank body 1, the fixing block 16 is embedded in the adjusting hole 8, and the turning block 13 rotates in the turning groove 14;

[0030] Specifically, Figure 2 and Figure 3As shown, when it is necessary to adjust the height of the mounting sleeve 2 on the crank body 1, the turning handle 20 is turned, and the turning handle 20 drives the threaded rod 12 to rotate inside the threaded sleeve 10, so that the connecting plate 9 can be pulled through the turning block 13 and the turning groove 14 to make the connecting plate 9 disengage from the inside of the adjustment hole 8, and then the mounting sleeve 2 is slid outside the crank body 1. After the mounting sleeve 2 is adjusted to a suitable position, the turning handle 20 is reversed to make the turning block 13 push the connecting plate 9, so that the fixing block 16 can be embedded in the inside of the adjustment hole 8 to fix the mounting sleeve 2. Adjusting the position of the mounting sleeve 2 outside the crank body 1 can facilitate riders of different heights to ride bicycles.

[0031] Embodiment 3: The front end of the mounting sleeve 2 is fixedly connected with a fixing sleeve 17, the rear end of the mounting rod 4 is fixedly connected with a mounting block 18, the fixing sleeve 17 is provided with a mounting groove 15 inside, the mounting block 18 is processed with an external thread 19 outside, and the mounting groove 15 is processed with an internal thread that cooperates with the external thread 19 inside;

[0032] Specifically, Figure 2 , Figure 3 and Figure 4 As shown, the rubber pad 25 can prevent the mounting bolt 24 from getting stuck inside the fixing groove 22, thereby facilitating the screwing of the mounting bolt 24. When the mounting rod 4 needs to be disassembled and replaced, the mounting block 18 on the left side of the mounting rod 4 is rotated. Since the external thread 19 on the outside of the mounting block 18 and the internal thread inside the mounting groove 15 cooperate with each other, rotating the mounting block 18 can cause the mounting block 18 to be disengaged from the inside of the mounting groove 15, thereby facilitating the disassembly of the mounting rod 4 and replacing the pedal outside the mounting rod 4.

[0033] Working principle: When the utility model is used, it is necessary to rotate the mounting block 18 on the left side of the mounting rod 4 when installing the mounting rod 4. Since the external thread 19 on the outside of the mounting block 18 and the internal thread inside the mounting groove 15 cooperate with each other, rotating the mounting block 18 can make the mounting block 18 embedded in the inside of the mounting groove 15, thereby facilitating the installation of the mounting rod 4. The mounting rod 4 can complete the installation of the pedal assembly outside the mounting rod 4. When it is necessary to adjust the height of the mounting sleeve 2 on the crank body 1, the turning handle 20 is turned. The turning handle 20 drives the threaded rod 12 to rotate inside the threaded sleeve 10, so that the connecting plate 9 can be pulled through the turning block 13 and the turning groove 14 to make the connecting plate 9 disengage from the inside of the adjusting hole 8, and then the mounting sleeve 2 is slid outside the crank body 1 to adjust the mounting sleeve 2 to a suitable position. After the rotation is completed, the handlebar 20 is reversed to make the rotating block 13 push the connecting plate 9, so that the fixing block 16 can be embedded in the adjusting hole 8 to fix the mounting sleeve 2. Adjusting the position of the mounting sleeve 2 outside the crank body 1 can facilitate riders of different heights to ride the bicycle. When the angle of the movable plate 3 needs to be adjusted, the mounting bolt 24 is screwed out from the inside of the fixing groove 22 to make the fixing plate 21 lose its fixation, and then the pad 23 is pushed to make the pad 23 slide on the top of the support plate 11. Since the top of the pad 23 is inclined and the pad 23 can support the movable plate 3, the movement of the pad 23 can adjust the angle of the movable plate 3 according to the needs of the user. Adjusting the angle of the movable plate 3 can improve the comfort of the user, and the rubber pad 25 can prevent the mounting bolt 24 from being stuck in the inside of the fixing groove 22.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A carbon fiber bicycle crank with adjustable angle, comprising a toothed disc (5) and a movable plate (3), characterized in that: A central shaft (6) is installed inside the toothed disc (5), a crank body (1) is installed at the front end of the outside of the central shaft (6), a mounting sleeve (2) is movably sleeved at the bottom end of the outside of the crank body (1), a mounting rod (4) is provided at the front end of the mounting sleeve (2), a mounting sleeve (7) is movably connected to the outside of the mounting rod (4), an adjustment structure for adjusting the angle of the movable plate (3) is provided on the outside of the mounting sleeve (7); The adjustment structure comprises a movable plate (3), a support plate (11) and a cushion block (23); the movable plates (3) are movably hinged at the top ends of both sides of the outside of the mounting sleeve (7); the support plates (11) are welded to the bottom ends of both sides of the mounting sleeve (7); a fixed plate (21) is arranged at the top end of the support plate (11); the cushion block (23) is fixedly connected to the top end of the fixed plate (21); the fixing grooves (22) and the support plate (11) are respectively provided inside; the fixing grooves (22) are provided inside with mounting bolts (24); and the top ends of the mounting bolts (24) are provided with rubber pads (25).

2. The angle-adjustable carbon fiber bicycle crank according to claim 1, characterized in that: The cushion block (23) moves left and right at the top end of the support plate (11), and the cushion block (23) is arranged between the support plate (11) and the movable plate (3).

3. The angle-adjustable carbon fiber bicycle crank according to claim 1, characterized in that: The fixed plate (21) is fixed to the top end of the support plate (11) via a fixing groove (22) and a mounting bolt (24), and two groups of movable plates (3) are provided.

4. The angle-adjustable carbon fiber bicycle crank according to claim 1, characterized in that: The rear end of the mounting sleeve (2) is fixedly connected to a threaded sleeve (10), a threaded rod (12) is provided inside the threaded sleeve (10), a rear end of the threaded rod (12) is fixedly connected to a turning handle (20), a front end of the threaded rod (12) is fixedly connected to a turning block (13), a turning groove (14) is provided outside the turning block (13), a front end of the turning groove (14) is fixedly connected to a connecting plate (9), a front end of the connecting plate (9) is fixedly connected to a fixing block (16), and an adjusting hole (8) is provided at the rear end inside the crank body (1).

5. The angle-adjustable carbon fiber bicycle crank according to claim 4, characterized in that: The adjustment holes (8) are provided in a plurality of groups, and the adjustment holes (8) are arranged at equal intervals at the rear end inside the crank body (1).

6. The angle-adjustable carbon fiber bicycle crank according to claim 4, characterized in that: The fixed block (16) is embedded in the adjusting hole (8), and the rotating block (13) rotates in the rotating groove (14).

7. The angle-adjustable carbon fiber bicycle crank according to claim 1, characterized in that: The front end of the mounting sleeve (2) is fixedly connected to a fixing sleeve (17), the rear end of the mounting rod (4) is fixedly connected to a mounting block (18), and a mounting groove (15) is provided inside the fixing sleeve (17).

8. The angle-adjustable carbon fiber bicycle crank according to claim 7, characterized in that: The outside of the mounting block (18) is processed with an external thread (19), and the inside of the mounting groove (15) is processed with an internal thread that cooperates with the external thread (19).

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