Tail fin structure on surfboard

Abstract

A tail fin structure on a surfboard comprises a tail fin body, the end of the tail fin body is provided with a connecting part capable of being connected to a board body of the surfboard in an inserted mode, the board body is provided with an installation groove, and an insertion base is arranged in the installation groove. The bayonet socket is provided with an insertion hole and a buckle structure, the connection portion can be inserted into the insertion hole, the buckle structure can clamp the connection portion, and the tail fin body is inserted into the bayonet socket. The tail fin has the advantages that the tail fin is convenient to install, unlocking can be achieved by pushing the tail fin body forwards, and when the tail fin body is not pushed, the buckle structure fixes the connecting part so as to fix the tail fin body; the structure is simple, manufacturing materials are saved, and manufacturing difficulty is reduced; the tail fin body is of a detachable structure, so that the surfboard is convenient to package, store and carry.

Description

Technical Field

[0001] The utility model relates to the technical field of surfboards, in particular to a fin structure on a surfboard. Background Art

[0002] There is a Chinese utility model patent with the application number CN202121663672.2 and the name "A Fin Fixing Structure for a Surfboard Facilitating Disassembly and Assembly", which discloses a fin fixing structure for a surfboard facilitating disassembly and assembly, including a surfboard. A groove is formed inside the surfboard, fixing grooves are symmetrically formed inside the groove, the surfboard is connected with a fin, a cavity is formed inside the fin, a limiting groove is formed at the top of the fin, the limiting groove communicates with the cavity, fixing blocks are symmetrically welded and fixed on both sides of the limiting groove, the fin is fixed inside the groove, the fixing blocks correspond to the fixing grooves, a fixing device is jointly connected between the surfboard and the fin, and a pushing device is fixedly connected inside the fin. In this utility model, through a triangular block, the triangular block is embedded into the limiting groove, and the fixing block is embedded into the fixing groove, so as to fix the fin. By rotating a first knob, a rotating shaft rotates, a left-handed thread and a right-handed thread rotate, so as to drive a straight rod to move towards each other and drive a pushing block to move, thereby pushing the triangular block back and releasing the fixation of the fin. However, the disassembly and assembly structure of the fin of this surfboard is still relatively complex, and the disassembly and assembly efficiency is not high. Therefore, the fin fixing structure of this surfboard still needs to be further improved. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a fin structure on a surfboard with a simple structure and convenient disassembly and assembly of the fin in view of the above-mentioned current situation of the prior art.

[0004] The technical solution adopted by the utility model to solve the above technical problem is as follows: The fin structure on this surfboard includes a fin body, and a connecting portion capable of being inserted into the board body of the surfboard is arranged at the end of the fin body. It is characterized in that: an installation groove is arranged on the board body, a socket is arranged in the installation groove, a socket hole capable of inserting the connecting portion and a snap structure capable of clamping the connecting portion are arranged on the socket, and the fin body is inserted on the socket.

[0005] As an improvement, the connecting portion is preferably connecting convex portions spaced apart at the end of the fin body. A snap concave portion is arranged on the side of the connecting convex portion, an inner wall protrusion capable of being engaged with the snap concave portion is arranged on the inner wall of the socket hole, and an elastic member capable of pressing the snap concave portion against the inner wall protrusion is arranged on the socket.

[0006] Further improvement, preferably there are two connecting convex portions, and the snap concave portions of the two connecting convex portions are located on the same side of the corresponding connecting convex portion.

[0007] For further improvement, the end of the inner wall protrusion is preferably a sharp corner.

[0008] As an improvement, the specific structure of the elastic member is preferably that an inner wall recess is provided on the inner wall of one of the insertion holes, a top block is provided in the inner wall recess, the top block is elastically connected to the inner wall of the inner wall recess, and the top block abuts against the connecting convex portion inserted into the corresponding insertion hole.

[0009] For further improvement, the top block is preferably fixed to the inner wall of the inner wall recess by a return spring.

[0010] For further improvement, positioning convex columns are preferably provided on the inner wall of the inner wall recess, one end of the return spring is sleeved on the positioning convex column, and the other end of the return spring is fixed to the top block.

[0011] For further improvement, the abutting surface of the top block is preferably a flat surface, and the corresponding surface of the connecting convex portion is also a flat surface.

[0012] As an improvement, the thickness of the connecting convex portion is preferably the same as the thickness of the tail fin body, and the tail fin body and the connecting convex portion are an integrally formed integral structure.

[0013] As an improvement, the plate body preferably includes an inner layer and an outer layer, the socket is fitted in the inner layer, and an outer layer through hole is provided on the outer layer corresponding to the position of the socket.

[0014] Compared with the prior art, the advantages of the present utility model are as follows: easy to install, unlocking can be achieved by pushing the tail fin body forward, and when the tail fin body is not pushed, the buckle structure fixes the connecting portion to fix the tail fin body; simple structure, saving production materials and reducing the production difficulty; the tail fin body adopts a detachable structure, which facilitates the packaging, storage and handling of the surfboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional view of the embodiment of the present utility model applied to a surfboard;

[0016] Figure 2 is Figure 1 a three-dimensional view from another angle in

[0017] Figure 3 is Figure 1 a top view of

[0018] Figure 4 is Figure 3 a sectional view taken along line A-A in

[0019] Figure 5 is Figure 2 a structural exploded view of

[0020] Figure 6 is Figure 5 a further structural decomposition diagram of

[0021] Figure 7 is Figure 6 a perspective view of

[0022] Figure 8 is Figure 4 an enlarged view of part I in Specific embodiments

[0023] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments.

[0024] As Figures 1 to 8 shown, the fin structure on the surfboard of this embodiment includes a fin body 1. A connecting portion 11 that can be inserted into the board body 2 of the surfboard is provided at the end of the fin body 1. An installation groove 21 is provided on the board body 2. A socket 3 is provided in the installation groove 21. A plug hole 31 for inserting the connecting portion 11 and a snap structure for clamping the connecting portion 11 are provided on the socket 3. The fin body 1 is inserted into the socket 3.

[0025] The connecting portion 11 is connecting convex portions spaced apart at the end of the fin body. A snap recess 111 is provided on the side of the connecting convex portion. An inner wall protrusion 311 that can be engaged with the snap recess 111 is provided on the inner wall of the plug hole 31. An elastic member for pressing the snap recess 111 against the inner wall protrusion 311 is provided on the socket 3. There are two connecting convex portions, and the snap recesses 111 of the two connecting convex portions are located on the same side of the corresponding connecting convex portion. The end of the inner wall protrusion 311 is a sharp angle.

[0026] The specific structure of the elastic member is that an inner wall recess is provided on the inner wall of one of the plug holes 31. A top block 32 is provided in the inner wall recess. The top block 32 is elastically connected to the inner wall of the inner wall recess. The top block 32 abuts against the connecting convex portion inserted into the corresponding plug hole 31. The top block 32 is fixed to the inner wall of the inner wall recess by a return spring 33. A positioning convex column 34 is provided on the inner wall of the inner wall recess. One end of the return spring 33 is sleeved on the positioning convex column 34, and the other end of the return spring 33 is fixed to the top block 32. The abutting surface of the top block 32 is a flat surface, and the corresponding surface of the connecting convex portion is also a flat surface.

[0027] The thickness of the connecting convex portion is the same as the thickness of the fin body 1. The fin body 1 and the connecting convex portion are an integrally formed integral structure. The board body 2 includes an inner layer and an outer layer. The socket 3 is embedded in the inner layer, and an outer layer through hole is provided on the outer layer corresponding to the position of the socket 3.

[0028] Working principle: The connecting part of the tail fin body touches the top block, enabling the connecting part of the tail fin body to be smoothly inserted into the insertion hole. When the tail fin body is released, the top block is driven by the return spring to push the tail fin body backward, so that the buckle recess on the connecting part is buckled with the inner wall protrusion on the inner wall of the insertion hole, thus fixing the tail fin body.

[0029] When the tail fin body needs to be removed, just push the tail fin body forward, the top block retracts into the inner wall recess again, and the inner wall protrusion and the buckle recess are disengaged from each other, so that the tail fin body can be removed.

Claims

1. A fin structure on a surfboard, comprising a fin body (1), and a connecting portion (11) capable of being inserted into a board body (2) of the surfboard is arranged at an end of the fin body (1), and is characterized in that: An installation groove (21) is provided on the plate body (2), a socket (3) is provided in the installation groove (21), a socket hole (31) for inserting the connecting portion (11) and a snap structure for clamping the connecting portion (11) are provided on the socket (3), and the fin body (1) is inserted on the socket (3).

2. The caudal fin structure according to claim 1, characterized in that: The connecting portion (11) is a connecting convex portion spacedly distributed at the end of the fin body. A snap recess (111) is provided on the side of the connecting convex portion. An inner wall protrusion (311) capable of being engaged with the snap recess (111) is provided on the inner wall of the socket hole (31). An elastic member for pressing the snap recess (111) against the inner wall protrusion (311) is provided on the socket (3).

3. The caudal fin structure according to claim 2, characterized in that: There are two connecting convex portions, and the snap recesses (111) of the two connecting convex portions are located on the same side of the corresponding connecting convex portion.

4. The caudal fin structure according to claim 3, wherein: The end of the inner wall protrusion (311) is a sharp angle.

5. The caudal fin structure according to any one of claims 2 to 4, characterized in that: The specific structure of the elastic member is that an inner wall recess is provided on the inner wall of one of the socket holes (31), a top block (32) is provided in the inner wall recess, the top block (32) is elastically connected to the inner wall of the inner wall recess, and the top block (32) abuts against the connecting convex portion inserted into the corresponding socket hole (31).

6. The caudal fin structure according to claim 5, wherein: The top block (32) is fixed to the inner wall of the inner wall recess by a return spring (33).

7. The caudal fin structure according to claim 6, characterized in that: A positioning convex column (34) is provided on the inner wall of the inner wall recess. One end of the return spring (33) is sleeved on the positioning convex column (34), and the other end of the return spring (33) is fixed to the top block (32).

8. The caudal fin structure according to claim 7, characterized in that: The abutting surface of the top block (32) is a plane, and the corresponding surface of the connecting convex portion is also a plane.

9. The caudal fin structure according to any one of claims 2 to 4, characterized in that: The thickness of the connecting convex portion is the same as the thickness of the fin body (1), and the fin body (1) and the connecting convex portion are an integrally formed integral structure.

10. The caudal fin structure according to any one of claims 1 to 4, characterized in that: The plate body (2) includes an inner layer and an outer layer. The socket (3) is fitted in the inner layer, and an outer layer through hole is provided on the outer layer corresponding to the position of the socket (3).

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