Light carbon fiber flipper board
By using lightweight fin boards made of carbon fiber reinforced resin-based composite material (CFRP), the complex and heavy quality problems of fin boards made of existing rubber and plastic materials are solved, and the lightweight, strength enhancement and flexibility of fin boards are achieved, making them suitable for diving use.
Patent Information
- Application Number
- CN202422200811.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The production process of diving fins made of existing rubber and plastic materials is complex, inefficient, and the product quality is heavy, making it difficult to meet the needs of diving users.
Lightweight fin plates made of carbon fiber reinforced resin-based composite material (CFRP) are formed by hot pressing and curing of prepreg combined layer and double fabric layer to form a nine-layer structure with strength and flexibility.
It realizes the lightweight, strength improvement and flexibility of the fin board, and has a long service life and is suitable for diving use.
Smart Images
Figure CN223030546U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of diving fins and relates to a carbon fiber lightweight fin board. Background Art
[0002] When a diver is diving, due to the difference in the structures of human hands and feet from those of aquatic organisms, the interaction force between the human body and the water body is small, which is not conducive to the flexible movement of the diver at the bottom of the water. In addition to the indispensable oxygen cylinder equipment for divers, a diving suit also needs to be worn. The diving suit can reduce the resistance between the diver's torso and the water body, and at the same time can effectively increase the contact area between the diver's hands and feet and the water body, facilitating the swinging limbs of the diver to fully contact the water body and exert force to make flexible movements. Fins provide a powerful forward driving force for swimming and diving. The large area of the fins can provide a powerful driving force, eliminating the need to paddle with both hands to generate power, enabling both hands to be freed up for other tasks.
[0003] The existing fin sheets are made of plastic fins or flexible materials such as natural rubber, synthetic rubber or other easily bendable thermoplastic materials, and the thickness of the fin sheets is approximately in the range of 5 mm - 10 mm. The manufacturing method is rubber vulcanization or thermoplastic injection molding or pultrusion. The production process of using rubber fin sheets is complex, the production efficiency of the product is low, and the quality is heavy; although the plastic fin sheets are simple to mold, due to the need for a certain strength of the product, a certain thickness is required for the product, resulting in a relatively heavy quality of the fin sheets.
[0004] Therefore, it is necessary to improve a lightweight carbon fiber lightweight fin board with a certain flexibility and strength. Summary of the Utility Model
[0005] The utility model provides a carbon fiber lightweight fin board, aiming to solve the problems that the production process of the existing rubber fin sheets is complex, the production efficiency of the product is low, and the quality is heavy; while the plastic fin sheets need a certain strength, resulting in a relatively heavy quality of the fin sheets and being difficult to provide a more suitable fin board for diving users.
[0006] To achieve the above object, the utility model provides a carbon fiber lightweight fin board, which comprises a prepreg combination layer and double fabric layers respectively arranged on the upper and lower surfaces of the prepreg combination layer. The prepreg combination layer and the double fabric layers are formed by hot pressing and curing. The double fabric layers are arranged by superimposing two identical layers of carbon fiber fabric prepregs. The prepreg combination layer uses unidirectional carbon fiber prepregs and is alternately laid at multiple angles to form a fin board with strength and flexibility. One end of the fin board is set as a folded corner.
[0007] Preferably, the prepreg composite layer includes a 0° unidirectional carbon fiber prepreg layer, a 45° unidirectional carbon fiber prepreg layer, and a 90° unidirectional carbon fiber prepreg layer. The 45° unidirectional carbon fiber prepreg layers are provided on both sides of the 0° unidirectional carbon fiber prepreg layer, and the 90° unidirectional carbon fiber prepreg layers are provided on the outer sides of the 45° unidirectional carbon fiber prepreg layers on both sides. The double fabric layers are respectively laid on the 90° unidirectional carbon fiber prepreg layers on both sides.
[0008] Preferably, the width of the flipper blade is 100 - 400 mm, the length is 400 - 1000 mm, the thickness of the rear end of the flipper blade is 1.0 - 4 mm, the thickness of the front end is 0.2 - 2 mm, and the thickness gradually transitions from thick to thin from the rear end to the front end. The angle of the fold angle at the rear of the flipper blade is 90° - 180°.
[0009] The beneficial effects of the present utility model compared with the prior art:
[0010] The present utility model provides a carbon fiber lightweight flipper blade. The 45° and 90° unidirectional carbon fiber prepreg layers are clamped on the outer sides of the 0° unidirectional carbon fiber prepreg layer, and two layers of carbon fiber fabric prepregs are stacked to form a 9 - layer hot - pressed and cured flipper blade. It has the advantages of being lightweight, thinner in thickness, lighter in weight, better in flexibility, better in strength, long in service life, and more suitable for diving use.
[0011] To more clearly illustrate the structural features and functions of the present utility model, the following will describe the present utility model in detail with reference to the accompanying drawings and specific embodiments. Brief Description of the Drawings
[0012] Figure 1 is a three - dimensional structural schematic diagram of the present utility model;
[0013] Figure 2 is Figure 1 a side - view structural schematic diagram of
[0014] Figure 3 is Figure 1 a layered structural schematic diagram of
[0015] Reference Numerals:
[0016] 1. Prepreg composite layer; 2. Double fabric layer; 3. Fold angle. Detailed Description of the Embodiments
[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.
[0018] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0019] To achieve the above object, an embodiment of the present utility model provides a carbon fiber lightweight flipper board, referring to Figures 1-3 As shown, the flipper board includes a prepreg combination layer 1 and double fabric layers 2 respectively disposed on the upper and lower surfaces of the prepreg combination layer. The prepreg combination layer 1 and the double fabric layers 2 are formed by hot pressing and curing. The double fabric layers 2 are arranged by stacking two identical layers of carbon fiber fabric prepregs. The prepreg combination layer 1 uses prepregs of unidirectional carbon fibers and is alternately laid at multiple angles to form a flipper board with strength and flexibility. One end of the flipper board is provided with a fold angle 3.
[0020] Among them, the prepreg combination layer 1 includes a 0° unidirectional carbon fiber prepreg layer, a 45° unidirectional carbon fiber prepreg layer, and a 90° unidirectional carbon fiber prepreg layer. 45° unidirectional carbon fiber prepreg layers are provided on both sides of the 0° unidirectional carbon fiber prepreg layer, and 90° unidirectional carbon fiber prepreg layers are provided on the outer sides of the 45° unidirectional carbon fiber prepreg layers on both sides. The double fabric layers 2 are respectively laid on the 90° unidirectional carbon fiber prepreg layers on both sides.
[0021] Among them, the width of the flipper board is 100 - 400 mm, the length is 400 - 1000 mm, the thickness of the rear end of the flipper board is 1.0 - 4 mm, the thickness of the front end is 0.2 - 2 mm, and it gradually transitions from thick to thin from the rear end to the front end. The angle of the fold angle 3 at the rear of the flipper board is 90° - 180°.
[0022] In this embodiment, first, cut appropriate sizes and a certain number of carbon fiber unidirectional prepregs and carbon fiber fabric prepregs according to the product shape. Then, use the 0° unidirectional carbon fiber prepreg as the base layer, and sequentially add 45° unidirectional carbon fiber prepregs, 90° unidirectional carbon fiber prepreg layers, and two identical carbon fiber fabric prepregs on both sides of the base layer. Lay them in a preset hot pressing mold according to the layup requirements and place them on the platform of a molding press for hot pressing and curing. An alternating layup of 90°, 45°, 0°, 45°, 90° using unidirectional carbon fiber prepregs is formed in the middle layer, and a 0° layup using 3K twill carbon fiber prepregs is used on both sides to ensure the strength and flexibility of the flipper board, with the following advantages:
[0023] Lightweight: Compared with traditional plastic and rubber flipper boards, the flipper board made of carbon fiber reinforced resin matrix composite (CFRP) in this embodiment has a small thickness and light weight;
[0024] Mechanical properties: The flipper board made of carbon fiber reinforced resin matrix composite (CFRP) has appropriate flexibility, stiffness, and sufficient strength, with a long service life.
[0025] In summary, the present utility model provides a carbon fiber lightweight flipper board, with 45° and 90° unidirectional carbon fiber prepreg layers sandwiching the outside of the 0° unidirectional carbon fiber prepreg layer, and two layers of carbon fiber fabric prepregs are superimposed to form a 9-layer hot-pressed and cured flipper board, which has the advantages of being carbon fiber lightweight, thinner in thickness, lighter in weight, better in flexibility, better in strength, long in service life, and more suitable for diving use.
[0026] The above describes the technical principle of the present utility model in combination with specific embodiments, which is only the preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any technical solution falling within the idea of the present utility model belongs to the protection scope of the present utility model. Those skilled in the art can easily think of other specific embodiments of the present utility model without creative labor, and all of them will fall within the protection scope of the present utility model.
Claims
1. A carbon fiber lightweight fin board, characterized in that: The flipper board includes a prepreg combination layer and double fabric layers respectively arranged above and below the prepreg combination layer, the prepreg combination layer and the double fabric layer are formed by hot pressing and curing, the double fabric layer is formed by stacking two layers of the same carbon fiber fabric prepreg, the prepreg combination layer is made of unidirectional carbon fiber prepreg, and is laid alternately at multiple angles to form a flipper board with strength and flexibility, and one end of the flipper board is set to be a folded angle.
2. The carbon fiber lightweight fin board according to claim 1, characterized in that: The prepreg combination layer includes a 0° unidirectional carbon fiber prepreg layer, a 45° unidirectional carbon fiber prepreg layer, and a 90° unidirectional carbon fiber prepreg layer. 45° unidirectional carbon fiber prepreg layers are provided on both sides of the 0° unidirectional carbon fiber prepreg layer, and 90° unidirectional carbon fiber prepreg layers are provided on the outer sides of the 45° unidirectional carbon fiber prepreg layers on both sides. The double fabric layers are respectively laid on the 90° unidirectional carbon fiber prepreg layers on both sides.
3. The carbon fiber lightweight fin board according to claim 1, characterized in that: The fin board has a width of 100-400mm and a length of 400-1000mm. The thickness of the rear end of the fin board is 1.0-4mm, and the thickness of the front end is 0.2-2mm. The rear end to the front end gradually transitions from thick to thin. The angle of the folded corner at the rear of the fin board is 90°-180°.