Carbon fiber crank

Abstract

The utility model discloses a carbon fiber crank, including first metal base, first metal base inside is equipped with light weight non -metal filling, first metal base one side is equipped with second metal base, and second metal base periphery is equipped with carbon fiber coating material, the utility model has made improvement to prior art, in actual use, first metal base and second metal base adopt 7075 aluminum alloy integral to make, and non -metal filling is light weight foamed material, and is foamed and is formed on the spot or mould, and carbon fiber coating material adopts carbon fiber prepreg cloth, and the thickness is 0.2mm, and is cut into the shape multilayer required, is laid on the combination of metal base and non -metal filling, then adopts hot -pressing forming solidification, has solved the problem that the greater the weight of aluminum alloy crank, the heavier the accessory, will lead to the person who rides to need to consume greater physical strength to promote the speed.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber cranks for bicycles, specifically, to a carbon fiber crank. Background Technology

[0002] As the most common means of transportation, bicycles are widely used. People often choose bicycles for short-distance travel. During the pedaling process, the force is greatest in the downward movement. The bicycle crank is subjected to torque force and axial support force. Due to the different positions of the external force applied to the bicycle crank, after a long period of riding, the bicycle crank is prone to deformation due to material issues, resulting in a decrease in structural strength and affecting the riding experience. Therefore, the structural strength of the bicycle crank is particularly important.

[0003] Currently, bicycle cranks on the market are usually made of aluminum alloy, which is inexpensive to manufacture. However, aluminum alloy cranks are relatively heavy, and heavier components require riders to expend more physical effort to increase speed. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a carbon fiber crank to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A carbon fiber crank includes a first metal matrix, a lightweight non-metallic filler is installed inside the first metal matrix, a second metal matrix is ​​provided on one side of the first metal matrix, and a carbon fiber coating is provided around the second metal matrix.

[0007] Furthermore, the first metal substrate has a central shaft interface inside, a bridge-type body on one side of the central shaft interface, and a foot pedal interface on one side of the bridge-type body.

[0008] Furthermore, the central axis interface, the bridge-type body, and the foot pedal interface are installed inside the first metal base.

[0009] Furthermore, a central shaft groove and an interface groove are respectively formed inside the second metal substrate.

[0010] Furthermore, the central axis interface engages with the central axis slot, and the foot pedal interface engages with the interface slot.

[0011] Furthermore, guide sleeves are symmetrically installed inside the first metal substrate, and guide grooves are opened inside the guide sleeves. Guide rods are symmetrically connected inside the second metal substrate, and the guide rods slide with the guide sleeves through the guide grooves.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention improves upon existing technology. In practical use, the first and second metal substrates are integrally made of 7075 aluminum alloy. The non-metallic filler is a lightweight foamed material, which is foamed on-site or in a mold. The carbon fiber coating material is made of carbon fiber prepreg cloth with a thickness of 0.2mm, cut into multiple layers of the required shape, and laid on the combination of the metal substrate and the non-metallic filler. Then, it is cured by hot pressing. This solves the problem that the aluminum alloy crank has a large self-weight, and the heavier the component, the more physical effort the rider needs to expend to increase speed. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Fig. 1 This is a schematic diagram of the main structure of a carbon fiber crank according to an embodiment of the present utility model;

[0016] Fig. 2 This is a perspective view of a carbon fiber crank according to an embodiment of the present utility model;

[0017] Fig. 3 This is a schematic diagram of the structure of the second metal matrix in a carbon fiber crank according to an embodiment of the present invention.

[0018] In the picture:

[0019] 1. First metal substrate; 101. Central shaft interface; 102. Bridge-type body; 103. Foot pedal interface; 2. Lightweight non-metallic filler; 3. Second metal substrate; 301. Central shaft groove; 302. Interface groove; 4. Carbon fiber covering material; 5. Guide sleeve; 6. Guide groove; 7. Guide rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] According to embodiments of the present invention, such as Figs. 1-3As shown, a carbon fiber crank for smoke removal performance testing device is provided, including a first metal substrate 1, a lightweight non-metallic filler 2 installed inside the first metal substrate 1, a second metal substrate 3 provided on one side of the first metal substrate 1, and a carbon fiber coating material 4 provided around the second metal substrate 3.

[0022] Through the above technical solution, the first metal substrate 1 and the second metal substrate 3 are integrally made of 7075 aluminum alloy. The non-metallic filler 2 is a lightweight foamed material that is foamed on-site or in a mold. The carbon fiber coating material 3 is made of carbon fiber prepreg cloth with a thickness of 0.2mm. It is cut into multiple layers of the required shape and laid on the combination of the metal substrate 1 and the non-metallic filler 2. Then, it is cured by hot pressing.

[0023] like Figs. 1-3 As shown, according to an embodiment of the present utility model, a carbon fiber crank has a central shaft interface 101 inside the first metal base 1, a bridge-type body 102 on one side of the central shaft interface 101, a foot pedal interface 103 on one side of the bridge-type body 102, and a central shaft groove 301 and an interface groove 302 respectively inside the second metal base 3.

[0024] Through the above technical solution, the central shaft interface 101 engages with the central shaft groove 301, the foot pedal interface 103 engages with the interface groove 302, and the truss-type body 102 can reduce weight while ensuring strength.

[0025] like Figs. 1-3 As shown, according to an embodiment of the present invention, a carbon fiber crank has a first metal substrate 1 in which guide sleeves 5 are symmetrically installed, and guide grooves 6 are provided inside the guide sleeves 5. A second metal substrate 3 is symmetrically connected to a guide rod 7, and the guide rod 7 slides with the guide sleeve 5 through the guide grooves 6.

[0026] With the above technical solution, when the first metal substrate 1 and the second metal substrate 3 are spliced, the guide rod 7 is inserted into the guide sleeve 5 through the guide groove 6 to achieve the effect of rapid splicing and facilitate subsequent welding work.

[0027] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0028] In summary, with the help of the above-mentioned technical solution of this utility model, the first metal substrate 1 and the second metal substrate 3 are integrally made of 7075 aluminum alloy, the non-metallic filler 2 is a lightweight foamed material, which is foamed on site or in a mold, and the carbon fiber coating material 3 is made of carbon fiber prepreg cloth with a thickness of 0.2mm, which is cut into multiple layers of the required shape and laid on the combination of metal substrate 1 and non-metallic filler 2, and then cured by hot pressing.

[0029] The central axis interface 101 engages with the central axis groove 301, and the foot pedal interface 103 engages with the interface groove 302. The truss-type body 102 can reduce weight while ensuring strength.

[0030] When the first metal substrate 1 and the second metal substrate 3 are spliced, the guide rod 7 is inserted into the guide sleeve 5 through the guide groove 6 to achieve rapid splicing and facilitate subsequent welding work.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A carbon fiber crank, characterized in that, It includes a first metal substrate (1), a lightweight non-metallic filler (2) installed inside the first metal substrate (1), a second metal substrate (3) provided on one side of the first metal substrate (1), and a carbon fiber coating material (4) provided on the periphery of the second metal substrate (3).

2. A carbon fiber crank according to claim 1, characterized in that, The first metal substrate (1) has a central shaft interface (101) inside, a bridge-type body (102) is provided on one side of the central shaft interface (101), and a foot pedal interface (103) is provided on one side of the bridge-type body (102).

3. A carbon fiber crank according to claim 2, characterized in that, The central axis interface (101), the bridge-type body (102), and the foot pedal interface (103) are installed inside the first metal substrate (1).

4. A carbon fiber crank according to claim 3, characterized in that, The second metal substrate (3) has a central shaft groove (301) and an interface groove (302) respectively.

5. A carbon fiber crank according to claim 4, characterized in that, The central shaft interface (101) engages with the central shaft groove (301), and the foot pedal interface (103) engages with the interface groove (302).

6. A carbon fiber crank according to claim 5, characterized in that, The first metal substrate (1) has guide sleeves (5) symmetrically installed inside, and guide grooves (6) are provided inside the guide sleeves (5). The second metal substrate (3) has guide rods (7) symmetrically connected inside, and the guide rods (7) slide with the guide sleeves (5) through the guide grooves (6).

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