Surfboard high-speed paddle structure

Abstract

The utility model discloses a surfboard high-speed paddle structure, which belongs to the technical field of surfboard paddles, and comprises a shaft connecting sleeve, three groups of paddles are arranged on the outer side surface of the shaft connecting sleeve in an annular array manner, and drainage grooves are formed in the upper and lower sides of the connecting surfaces of the three groups of paddles and the shaft connecting sleeve; the front end of each drainage groove extends out of the front end of the corresponding paddle by one section, and the rear end of each drainage groove is flush with the rear end of the corresponding paddle. The drainage grooves can overflow a part of vortex rotating along with the blades, so that the resistance of the blades during rotation is reduced, the rotation speed of the blades is higher, the drainage grooves are arranged on the three groups of blades, the mutual influence among the blades is effectively reduced, the rotation of the blades can break through the original speed limitation, and the rotation speed of the blades is improved. And a faster speed is provided for the surfboard.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of surfboard paddle blade, concretely relates to a high-speed paddle structure of surfboard. BACKGROUND

[0002] The electric surfboard is driven by lithium battery, and is moved by the propeller blade driven by lithium battery and motor. The water flow is pushed backward by the surfboard paddle blade in working, so that the surfboard is moved forward by the reaction force. In the design of the propeller blade, theoretically, the more the propeller blades are, the less the deflection vibration is in rotation, and the higher the motion stability is. However, when the multiple blades are running, although the arc-shaped connecting design of the blades can drive the water flow to rotate backward, part of the water flow will rotate in the direction of the blade movement, that is, the water flow driven by the previous group of blades will hinder the rotation of the next group of blades, so as to limit the rotation speed of the blades and affect the speed of the surfboard. Therefore, it is necessary to design a surfboard paddle blade structure which can reduce the mutual influence between the blades and improve the rotation speed. SUMMARY

[0003] The utility model discloses a high-speed paddle structure of surfboard, which solves the problems of the existing surfboard paddle blade in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a high-speed paddle structure of surfboard, including the axle connection sleeve, the outside of axle connection sleeve is provided with three groups of paddle blades in annular array, three groups of paddle blades are all provided with the drainage groove on the upper and lower sides of the connecting surface of axle connection sleeve, the front end of each group of drainage groove extends beyond the front end of paddle blade by a section, and the rear end of drainage groove is flush with the rear end of paddle blade.

[0005] Preferably, the drainage groove is a smooth and continuous U-shaped structure.

[0006] Preferably, the front end surface of the paddle blade is a smooth curved surface.

[0007] Preferably, the thickness of the paddle blade gradually decreases from the front end to the rear end.

[0008] Preferably, the inside of the axle connection sleeve is provided with an axle through hole and a gear slot.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The drainage groove can overflow part of the vortex rotating with the paddle blade, thereby reducing the resistance of the paddle blade in rotation, making the rotation speed of the paddle blade faster, the structure that the drainage groove is arranged on the three groups of paddle blades effectively reduces the mutual influence between the paddle blades, so that the rotation of the paddle blade can break through the original speed limit, and the surfboard is provided with a faster speed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a front structure schematic view of the utility model.

[0012] Fig. 2 It is a back structure schematic view of the utility model.

[0013] In the figure: 1, shaft connecting sleeve; 2, paddle; 3, drainage groove; 4, shaft through hole; 5, tooth slot. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0015] Referring to Figs. 1-2 A high-speed paddle 2 structure of a surfboard, comprising a shaft connecting sleeve 1, three groups of paddles 2 are arranged in an annular array on the outer side surface of the shaft connecting sleeve 1, drainage grooves 3 are arranged on the upper and lower sides of the connecting surface of the shaft connecting sleeve 1 and the three groups of paddles 2, the front end of each group of drainage grooves 3 extends beyond the front end of the paddle 2 by one section, and the rear end of the drainage groove 3 is flush with the rear end of the paddle 2.

[0016] In view of the problem that the paddles 2 of the existing surfboard interfere with each other when running, thereby limiting the rotating speed, the technical scheme is characterized in that the upper and lower sides of the contact surface of the paddle 2 and the shaft connecting sleeve 1 are provided with drainage grooves 3, and one group of drainage grooves 3 is arranged on the two sides of the helix of each group of paddles 2. When the paddle 2 rotates, a part of the vortex carried by the paddle 2 can be guided backward along the drainage groove 3, so as not to collide with the next group of paddles 2, thereby reducing the rotating resistance of the next group of paddles 2, making the rotating speed of the paddle 2 faster, and the structure that the three groups of paddles 2 are all provided with drainage grooves 3 effectively reduces the mutual influence between the paddles 2, so that the rotation of the paddle 2 can break through the original speed limit, providing a faster speed for the surfboard.

[0017] Further, the drainage groove 3 is a smooth and continuous U-shaped structure.

[0018] Through the technical scheme, the smooth U-shaped structure of the drainage groove 3 can reduce the resistance as much as possible, so that the vortex flow affecting the rotation of the paddle 2 is smoother, thereby improving the rotating speed of the paddle 2.

[0019] Further, the front end surface of the paddle 2 is a smooth curved surface.

[0020] Further, the thickness of the paddle 2 gradually decreases from the front end to the rear end.

[0021] The front end face of the paddle 2 first cuts into the water flow, and the smooth surface of the front end face can effectively reduce water flow resistance, thereby providing greater rotation speed.

[0022] Further, the inside of the shaft connecting sleeve 1 is provided with a shaft through hole 4 and a gear slot 5.

[0023] Through the technical scheme, the shaft through hole 4 and the gear slot 5 are used for butt joint with the output shaft of the motor, so as to ensure the connection stability.

[0024] Working principle: the flow guide grooves 3 are arranged on the upper and lower sides of the contact surface between the paddle 2 and the shaft connecting sleeve 1, and a group of flow guide grooves 3 are arranged on the two sides of the helix of each group of paddles 2. When the paddle 2 rotates, a part of the vortex carried by the paddle 2 can be guided backward along the flow guide grooves 3, so as to not hit the next group of paddles 2, thereby reducing the rotation resistance of the next group of paddles 2, making the paddle 2 rotate faster, and the structure that the flow guide grooves 3 are arranged on the three groups of paddles 2 effectively reduces the mutual influence between the paddles 2, so that the rotation of the paddle 2 can break through the original speed limit, and provide a faster speed for the surfboard.

[0025] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0026] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present application and the features of different embodiments or examples can be combined by those skilled in the art without contradiction.

[0027] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A surfboard high-speed paddle structure, characterized by: It includes a shaft connecting sleeve, and three groups of blades are arranged in a circular array on the outer surface of the shaft connecting sleeve. Drainage grooves are opened on the upper and lower sides of the connection surface between the three groups of blades and the shaft connecting sleeve. The front end of each group of drainage grooves extends beyond the front end of the blade by one section, and the rear end of the drainage groove is aligned with the rear end of the blade.

2. The surfboard high-speed paddle structure according to claim 1, characterized in that: The drainage groove is a smooth and continuous U-shaped structure.

3. The surfboard high-speed paddle structure according to claim 1, characterized in that: The front end surface of the blade is a smooth curved surface.

4. The surfboard high-speed paddle structure according to claim 1, characterized in that: The thickness of the blade gradually decreases from the front end to the rear end.

5. The surfboard high-speed paddle structure according to claim 1, characterized in that: A shaft through hole and tooth grooves are provided inside the shaft connecting sleeve.

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