CN217396770U

CN217396770U - Tail fin for surfboard

Info

Publication number: CN217396770U
Application number: CN202221411638.0U
Authority: CN
Inventors: 李国能; 李思蔚; 王俊
Original assignee: Zhejiang Moovi Technology Co ltd
Current assignee: Zhejiang Moovi Technology Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-09-09
Anticipated expiration: 2032-06-01

Abstract

The utility model relates to the technical field of surfboard production, and provides a tail fin for a surfboard, which comprises a first fin body and a second fin body which are respectively connected with the tail part of the surfboard, and a transverse wing, wherein two ends of the transverse wing are respectively connected with the first fin body and the second fin body; in the sailing process, the transverse wings provide lift force for the surfboard; the surfboard can provide certain lift in the process of sailing, and the contact area between the board body and the water surface is reduced, so that the sailing resistance is reduced.

Description

Tail fin for surfboard

Technical Field

The utility model relates to a surfboard production technical field, concretely relates to tail fin for surfboard.

Background

The existing electric surfboard is formed by modifying the tail part of the surfboard by installing a high-speed water jet propulsion pump, so that the surfboard can be driven at a high speed by jetting high-speed water flow backwards through the self propulsion pump under the windless and wave-free conditions.

The surfboard is provided with tail fins at the tail part, the number of the tail fins (or called tail rudders) is generally 1-5, and the stability, the speed and the control feeling of the surfboard are adjusted through different numbers of the tail fins.

The single fin is basically used on long boards and can also be surfboards suitable for beginners. The single fin can ensure stability and control force, and smooth and natural surfing feeling cannot be provided by other tail fin systems, so that the tail fin system is suitable for various wave conditions. Unfortunately, since a single fin limits the surfing action to lean turns and straight line changes, the increased control force means a diminished performance.

The double-fin combination divides one fin in the middle into two fins which are respectively arranged on two sides of the tail of the surfboard, and aims to enable water flow to flow through the middle, so that the speed is increased, and the turning performance is improved.

However, whether the surfboard is a single fin or a double fin, even more fins are provided, the bottom of the surfboard is partially immersed in the water surface during the driving process, and the larger the contact surface between the water and the bottom of the board body is, the larger the resistance of the surfboard during the driving process is. When the surfboard is at low speed, especially when a user with heavy weight is loaded on the board body, the tail part of the board body sinks more and is immersed in water, and the resistance of sailing is larger.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that there is the great defect of navigation resistance when overcoming above-mentioned current electronic surfboard low-speed or the heavy great user of supporting body, provides a tail fin for surfboard, can provide certain lift at the in-process of surfboard navigation, reduces the area of contact of plate body and the surface of water to reduce the resistance of navigation.

In order to achieve the above object, the utility model discloses a following technical scheme can realize: a tail fin for a surfboard comprises a first fin body, a second fin body and a transverse wing, wherein the first fin body and the second fin body are respectively connected with the tail of the surfboard; during sailing, the transverse wings provide lift for the surfboard.

The utility model discloses further preferred scheme does: the included angle between the first fin body and the transverse wing is equal to the included angle between the second fin body and the transverse wing.

The utility model discloses further preferred scheme does: and the included angle between the first fin body and the transverse wing and the included angle between the second fin body and the transverse wing are both [80,90 ].

The utility model discloses further preferred scheme does: the end parts of the first fin body and the second fin body are respectively provided with a connector which is used for being detachably connected with a mounting groove in the bottom of the surfboard.

The utility model discloses further preferred scheme does: the connector including be used for with vertical spacing draw-in groove of axle looks joint in the mounting groove to and be used for with the horizontal spacing draw-in groove of running roller looks joint in the mounting groove.

The utility model discloses further preferred scheme does: the axle setting in the mounting groove is in the one side that is close to surfboard the place ahead, the running roller set up in on the lateral wall of mounting groove.

The utility model discloses further preferred scheme does: the connector is of a sectional structure and comprises a front section and a rear section, wherein the front section is positioned on one side close to the front of the surfboard, and the rear section is positioned on one side behind the surfboard; the longitudinal limiting clamping groove is arranged on the front section, and the transverse limiting clamping groove is arranged on the rear section.

The utility model discloses further preferred scheme does: the projection of the transverse wing in the vertical direction has a certain radian, and the middle of the projection is arched backwards.

The utility model discloses further preferred scheme does: the first fin body, the second fin body and the transverse wing positioned between the first fin body and the second fin body are integrally formed.

To sum up, the utility model discloses following beneficial effect has: the fin bodies on the left side and the right side of the tail fin are connected together through the transverse wings, and the transverse wings can provide certain lift force while having the function of a tail rudder, so that the tail sinking of the electric surfboard in a low-speed state can be reduced by the part of the lift force, the sailing resistance is reduced, and the tail fin is particularly suitable for users with larger body weight. Meanwhile, the tail vane is compatible with the installation interface of the traditional tail vane, so that the tail vane system can be quickly disassembled and replaced.

Drawings

Fig. 1 is a front view of a surfboard incorporating a skeg according to the present invention.

Fig. 2 is a top view of a surfboard incorporating the skeg of the present invention.

Fig. 3 is a schematic structural diagram of the tail fin of the present invention.

Fig. 4 is a front view of the skeg of the present invention.

Fig. 5 is a top view of the skeg of the present invention, with the arrow pointing to the front of the surfboard.

Fig. 6 is a sectional view taken along a-a in fig. 5.

Fig. 7 is a sectional view taken along the direction C-C in fig. 6.

Wherein: 100. a surfboard; 200. a first fin body; 300. a second fin body; 400. a lateral wing; 500. a connector; 510. a longitudinal limiting clamping groove; 520. and a transverse limiting clamping groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

As shown in fig. 1 to 7, the present invention provides a tail fin for a surfboard, including a first fin body 200 and a second fin body 300 connected to the tail of the surfboard 100, respectively, and a lateral wing 400 having both ends connected to the first fin body 200 and the second fin body 300, respectively. During navigation, the lateral wing 400 provides lift to the surfboard 100. The projection of the lateral wing 400 in the vertical direction has a certain curvature, the middle of which is arched backwards, see fig. 5 in detail.

In this embodiment, the first fin 200, the second fin 300, and the lateral wing 400 therebetween are integrally formed.

In order to keep balance and beauty, in this embodiment, an included angle between the first fin body 200 and the lateral wing 400 is equal to an included angle between the second fin body 300 and the lateral wing 400.

Further, an included angle between the first fin body 200 and the lateral wing 400 and an included angle between the second fin body 300 and the lateral wing 400 are both [80,90 ]. Referring to fig. 4, in the drawing, an included angle between the first fin body 200 and the lateral wing 400 is equal to 1, an included angle between the second fin body 300 and the lateral wing 400 is equal to 2, and equal to 84 °.

In order to be compatible with the connection interface of the conventional tail fin, in this embodiment, the end portions of the first fin body 200 and the second fin body 300 are respectively provided with a connector 500 for detachably connecting with the installation groove located at the bottom of the surfboard 100.

Specifically, the connector 500 including be used for with the vertical spacing draw-in groove 510 of the axle looks joint in the mounting groove, and be used for with the horizontal spacing draw-in groove 520 of the running roller looks joint in the mounting groove.

The shaft in the mounting groove is disposed at one side near the front of the surfboard 100, and the rollers are disposed on the side walls of the mounting groove. The connector 500 is of a sectional structure, and includes a front section located at one side close to the front of the surfboard 100 and a rear section located at one side behind the surfboard 100; the longitudinal limiting clamping groove 510 is arranged at the front section, and the transverse limiting clamping groove 520 is arranged at the rear section. The utility model discloses the theory of operation as follows: the fin bodies on the left side and the right side of the tail fin are connected together through the transverse wings, and the transverse wings can provide certain lift force while having the function of a tail rudder, so that the tail sinking of the electric surfboard in a low-speed state can be reduced by the part of the lift force, the sailing resistance is reduced, and the tail fin is particularly suitable for users with larger body weight. Meanwhile, the tail vane is compatible with the installation interface of the traditional tail vane, so that the tail vane system can be quickly disassembled and replaced.

Claims

1. A tail fin for a surfboard is characterized by comprising a first fin body, a second fin body and a transverse wing, wherein the first fin body and the second fin body are respectively connected with the tail of the surfboard; during sailing, the transverse wings provide lift for the surfboard.

2. The skeg for a surfboard of claim 1, wherein an angle between the first fin body and the lateral wing is equal to an angle between the second fin body and the lateral wing.

3. The skeg for a surfboard of claim 1, wherein an angle between the first fin body and the lateral wing and an angle between the second fin body and the lateral wing are each [80,90 ].

4. The skeg for a surfboard of claim 1, wherein the ends of the first and second fin bodies are each provided with a connector for detachable connection with a mounting slot located at the bottom of the surfboard.

5. The skeg for a surfboard of claim 4, wherein the connector comprises a longitudinal limit slot for engaging with a shaft in the mounting groove and a transverse limit slot for engaging with a roller in the mounting groove.

6. The skeg for a surfboard of claim 5, wherein the shaft in the mounting groove is provided at a side near the front of the surfboard, and the roller is provided on a side wall of the mounting groove.

7. The skeg for a surfboard of claim 5, wherein the connector is a segmented structure comprising a front segment on a side near the front of the surfboard and a rear segment on a side near the rear of the surfboard; the longitudinal limiting clamping groove is arranged at the front section, and the transverse limiting clamping groove is arranged at the rear section.

8. The skeg for a surfboard of claim 1, wherein a projection of said lateral wing in a vertical direction has a curvature with a middle of the projection arched rearward.

9. The skeg for a surfboard of claim 1, wherein the first fin body, the second fin body, and the lateral wing therebetween are integrally formed.