Bicycle crank with anti-shock capacity

Abstract

The utility model relates to the technical field of crankshaft, and disclose a bicycle crankshaft with shock resistance, including outside protection device, the inner wall connection of outside protection device has the rubber ring, the inner wall connection of rubber ring has inside connecting device, the inside of inside connecting device is provided with crankshaft device, outside protection device includes first connecting ring and second connecting ring, the outside of first connecting ring and second connecting ring all is set up with screw thread, the left side of second connecting ring is connected with first sleeve, this new model scheme can carry out damping to inside connecting device, crankshaft device through setting inside connecting device, rubber ring, when the user connects through crankshaft device and footboard, when the self -supporting of use process receives the impact or the collision, the force that the crankshaft device received is passed through inside connecting device and is transmitted to rubber ring, and then absorbs the impact force through rubber ring, reduces the impact force that the crankshaft device received.

Description

Technical Field

[0001] This utility model belongs to the field of crankshaft technology, specifically a bicycle crankshaft with shock resistance. Background Technology

[0002] Bicycle square crankshafts typically consist of a crank and a crankshaft that fit together through a square hole, with square ends at both ends. Due to frequent pedaling, existing crankshafts experience vibrations, which are transmitted to the crankshaft by the user through the pedals, leading to damage over time. Therefore, we propose a bicycle crankshaft with shock-resistant capabilities. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a bicycle crankshaft with shock resistance, which effectively solves the above problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bicycle crankshaft with shock resistance, comprising an outer protective device, wherein a rubber ring is connected to the inner wall of the outer protective device, and an inner connecting device is connected to the inner wall of the rubber ring. A crankshaft assembly is disposed inside the inner connecting device. The outer protective device comprises a first connecting ring and a second connecting ring, both of which are threaded on their outer sides. A first sleeve is connected to the left side of the second connecting ring, and a placement hole matching the first sleeve is provided on the right side of the first connecting ring.

[0005] Preferably, the inner connecting device includes a third connecting ring and a fourth connecting ring. A second sleeve is connected to the right side of the third connecting ring, and the right side of the second sleeve is connected to the fourth connecting ring. The inner wall of the second sleeve is provided with mounting screw holes that match the crankshaft device.

[0006] Preferably, the crankshaft assembly includes a third sleeve, the inner wall of which is connected to a square shaft, the right side of which is connected to a fifth connecting ring, and the left side of which is connected to a sixth connecting ring.

[0007] Preferably, the opposite ends of the first connecting ring and the second connecting ring are both connected to retaining rings.

[0008] Preferably, the rubber ring is elliptical in shape.

[0009] Preferably, the inner walls of the first connecting ring and the second connecting ring are both connected with rubber pads.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By setting up an inner connecting device and a rubber ring, the inner connecting device and crankshaft device can be shock-absorbing. When the user connects the crankshaft device to the foot pedal, and is subjected to an impact or collision during use, the force on the crankshaft device is transmitted to the rubber ring through the inner connecting device, and then the rubber ring absorbs the impact force, reducing the impact force on the crankshaft device.

[0012] 2. By setting a retaining ring to limit the rubber ring, the stability of the device is improved. The rubber ring is elliptical in shape, which improves the shock absorption efficiency of the rubber ring. A rubber pad is set for auxiliary limiting, which, together with the third and fourth connecting rings, improves the overall shock absorption efficiency of the inner connecting device. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the shock-resistant bicycle crankshaft structure of this utility model;

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

[0017] Figure 3 This is a schematic diagram of the rubber pad structure of this utility model.

[0018] In the diagram: 100, outer protective device; 110, first connecting ring; 120, second connecting ring; 130, first sleeve; 140, retaining ring; 150, rubber pad; 200, rubber ring; 300, inner connecting device; 310, third connecting ring; 320, fourth connecting ring; 330, second sleeve; 400, crankshaft assembly; 410, third sleeve; 420, square shaft; 430, fifth connecting ring; 440, sixth connecting ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3A shock-resistant bicycle crankshaft includes an outer protective device 100. A rubber ring 200 is fixedly connected to the inner wall of the outer protective device 100. An inner connecting device 300 is connected to the inner wall of the rubber ring 200. A crankshaft assembly 400 is disposed inside the inner connecting device 300. The outer protective device 100 includes a first connecting ring 110 and a second connecting ring 120. Both the first connecting ring 110 and the second connecting ring 120 have threads on their outer sides. A first sleeve 130 is fixedly connected to the left side of the second connecting ring 120. Ring 110 is screwed to the first sleeve 130. The right side of the first connecting ring 110 has a placement hole matching the first sleeve 130. During use, the second connecting ring 120 and the first sleeve 130 are used to insert the rubber ring 200 into the bicycle. Then, the first connecting ring 110 is rotated to connect with the first sleeve 130. The inner connecting device 300 is then installed inside the rubber ring 200 and connected to the inner connecting device 300 via the crankshaft assembly 400. The inner connecting device 300 is then installed inside the inner connecting device 200. 0. The rubber ring 200 can dampen the inner connecting device 300 and the crankshaft assembly 400. When the user connects the crankshaft assembly 400 to the pedal, and experiences an impact or collision during use, the force on the crankshaft assembly 400 is transmitted to the rubber ring 200 through the inner connecting device 300. The rubber ring 200 then absorbs the impact force, reducing the impact force on the crankshaft assembly 400 and effectively extending its service life. The opposite ends of the first connecting ring 110 and the second connecting ring 120 are both... A retaining ring 140 is fixedly connected to limit the rubber ring 200, thereby improving the stability of the device. The rubber ring 200 is elliptical in shape, which improves its shock absorption efficiency. Rubber pads 150 are fixedly connected to the inner walls of the first connecting ring 110 and the second connecting ring 120, respectively. The rubber pads 150 provide auxiliary limiting and, in conjunction with the third connecting ring 310 and the fourth connecting ring 320, improve the overall shock absorption efficiency of the inner connecting device 300.

[0021] The inner connecting device 300 includes a third connecting ring 310 and a fourth connecting ring 320. A second sleeve 330 is fixedly connected to the right side of the third connecting ring 310. The right side of the second sleeve 330 is fixedly connected to the fourth connecting ring 320. The inner wall of the second sleeve 330 has a mounting screw hole that matches the crankshaft device 400. During use, the third connecting ring 310 and the second sleeve 330 are inserted into the rubber ring 200. Then, the fourth connecting ring 320 is rotated to connect with the second sleeve 330, so that the third connecting ring 310 and the fourth connecting ring 320 restrict the second sleeve 330 inside the rubber ring 200. By setting the inner connecting device 300, the rubber ring 200 and the crankshaft device 400 are isolated, and the rotation stability of the square shaft 420 in the crankshaft device 400 can be effectively improved.

[0022] The crankshaft assembly 400 includes a third sleeve 410, with a square shaft 420 rotatably connected to the inner wall of the third sleeve 410. A fifth connecting ring 430 is fixedly connected to the right side of the third sleeve 410, and a sixth connecting ring 440 is sleeved to the left side of the third sleeve 410. The third sleeve 410, square shaft 420, and fifth connecting ring 430 are inserted into the second sleeve 330, and then the sixth connecting ring 440 is connected to the second sleeve 330 to complete the assembly of the assembly. Subsequently, the square shaft 420 is connected to the sprocket and foot pedal. By setting the crankshaft assembly 400 to be quickly connected to the inner connecting device 300, the square shaft 420 can run quickly.

Claims

1. A bicycle crankshaft with shock resistance, characterized in that: The device includes an outer protective device (100), the inner wall of which is connected to a rubber ring (200), the inner wall of which is connected to an inner connecting device (300), and the inner side connecting device (300) is provided with a crankshaft device (400). The outer protective device (100) includes a first connecting ring (110) and a second connecting ring (120). Both the first connecting ring (110) and the second connecting ring (120) have threads on their outer sides. The left side of the second connecting ring (120) is connected to a first sleeve (130), and the right side of the first connecting ring (110) has a placement hole that matches the first sleeve (130).

2. The bicycle crankshaft with shock resistance according to claim 1, characterized in that: The inner connecting device (300) includes a third connecting ring (310) and a fourth connecting ring (320). A second sleeve (330) is connected to the right side of the third connecting ring (310). The right side of the second sleeve (330) is connected to the fourth connecting ring (320). The inner wall of the second sleeve (330) is provided with mounting screw holes that match the crankshaft device (400).

3. A bicycle crankshaft with shock resistance according to claim 1, characterized in that: The crankshaft assembly (400) includes a third sleeve (410), the inner wall of which is connected to a square shaft (420), the right side of which is connected to a fifth connecting ring (430), and the left side of which is connected to a sixth connecting ring (440).

4. A bicycle crankshaft with shock resistance according to claim 1, characterized in that: Both the opposite ends of the first connecting ring (110) and the second connecting ring (120) are connected to retaining rings (140).

5. A bicycle crankshaft with shock resistance according to claim 1, characterized in that: The rubber ring (200) is elliptical in shape.

6. A bicycle crankshaft with shock resistance according to claim 1, characterized in that: The inner wall of the first connecting ring (110) and the inner wall of the second connecting ring (120) are both connected with rubber pads (150).

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