CN210478967U

CN210478967U - Lateral fin mounting structure and electric surfboard with same

Info

Publication number: CN210478967U
Application number: CN201921579178.0U
Authority: CN
Inventors: 胡富祥
Original assignee: 胡富祥
Current assignee: Zhejiang Yiwei Intelligent Technology Co.,Ltd.
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-05-08
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a lateral fin mounting structure and have its electronic surfboard, lateral fin mounting structure, including the lateral fin device, lateral fin device detachable fixes on casing assembly, the lateral fin device includes lateral fin body and installation department, sets up the mounting groove device on casing assembly's lower plate, sets up the tail fin seat in the mounting groove device, the tail fin seat includes bayonet joint and first lug, the bayonet joint can insert in the mounting groove device and by spacing, the outside overall dimension of first lug is greater than the overall dimension of mounting groove device set up the inserting groove on the bayonet joint, and the installation department of lateral fin device can insert in the inserting groove and by spacing, first lug with the lateral fin body sets up respectively the both sides of lower plate. Lateral fin mounting structure, rational in infrastructure, the production of being convenient for through the tail fin seat of predetermineeing on housing assembly, improved the convenience and the efficiency of lateral fin device installation greatly.

Description

Lateral fin mounting structure and electric surfboard with same

Technical Field

The utility model relates to a surfboard technical field, in particular to lateral fin mounting structure and have its electronic surfboard.

Background

The bottom surface of the existing surfboard must be provided with one or more than one fin (also called tail rudder), which is a necessary structure for the surfboard, and different fins are often replaced for specific purposes. The fin is directly fixed on the bottom surface of the traditional surfboard, so that a user can not replace the fin by himself, and the fin does not meet the use requirement, particularly, the fin is required to be assembled with a detachable fin for reducing the volume in the transportation process for detachable or inflatable surfboards and competitive surfboards such as electric surfboards or diesel surfboards.

Recently, the assembly structure of fins on surfboards and sports surfboards has been developed in a direction of modular assembly, in which a slot is formed in a base plate in advance, the slot is embedded in the bottom surface of the surfboard in advance, the bottom surface of the fin is inserted into the slot, and the fin is fixed in the slot by screws. For example, a tail vane structure (fin structure) is disclosed in the chinese utility model patent No. ZL201220523415.3 (publication No. CN202923852U) tail vane fixing module of surfboard. Therefore, the installation of the fin plate can be completed by an auxiliary tool such as a screwdriver, the replacement of the fin plate is inconvenient, in addition, due to the existence of the threaded hole, when sand or other fine impurities enter the threaded hole, at the moment, in the installation process of the fin plate, the screw can be blocked and mechanically failed, so that the fin plate cannot be firmly fixed in the caulking groove on the substrate, and the installation efficiency of the fin plate is lower and the universality is not strong.

In addition, when the surfboard slides on water, the tail rudder structure greatly affects the sliding direction of the surfboard, in the prior art, when the surfboard turns or turns around, the direction adjustment is realized by sliding a large arc, on one hand, the power consumption of the surfboard is increased, on the other hand, the pleasure of user experience is also reduced, and how to realize the direction adjustment of the surfboard by sliding a small curved arc is also a technical problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a lateral fin mounting structure and an electric surfboard having the same, which at least solve at least one of the problems in the related art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a lateral fin mounting structure, includes the lateral fin device, lateral fin device detachable fixes on casing assembly, the lateral fin device includes lateral fin body and installation department set up the mounting groove device on casing assembly's the lower plate set up the tail fin seat in the mounting groove device, the tail fin seat includes bayonet joint and first lug, the bayonet joint can insert in the mounting groove device and by spacing, the outside overall dimension of first lug is greater than the overall dimension of mounting groove device set up the inserting groove on the bayonet joint, the installation department of lateral fin device can insert in the inserting groove and by spacing, first lug with the lateral fin body sets up respectively the both sides of lower plate.

Furthermore, the lateral fin body and the installation part are arranged at the joint of the lateral fin body and the installation part at an included angle.

The installation department sets up the upper end of lateral fin body, the installation department is the slope form setting, the lateral fin body for the installation department further inclines to the homonymy.

Furthermore, an extension line of the projection of the side edge of the mounting portion in the vertical direction and the projection of the side edge of the side fin body in the vertical direction form an included angle α, the included angle between the projection of the side edge of the mounting portion in the vertical direction and a vertical line with the end portion of the mounting portion as a starting point is β, α and β incline to the same side of the vertical line, the value range of α is 2-15 degrees, and the value range of β is 2-8 degrees.

Furthermore, a housing is arranged on the lower bottom plate, the housing comprises a second convex block and a connecting plate, a second mounting groove is formed in the second convex block, the connecting plate is detachably and fixedly connected with the lower bottom plate, and the second mounting groove is sleeved on the outer side of the first convex block.

Further, the installation department includes first grafting piece and second grafting piece first grafting piece with set up between the second grafting piece and dodge the groove.

Furthermore, a clamping groove is formed in the installation part and is formed in the end portion of the installation part.

Furthermore, a first limiting groove is formed in the first inserting block, a second limiting groove is formed in the second inserting block, and the first limiting groove and the second limiting groove are formed in the left side and the right side of the lateral fin body.

Furthermore, a guide groove is formed in the second insertion block.

Compared with the prior art, lateral fin mounting structure have following advantage:

(1) lateral fin mounting structure, rational in infrastructure, the production of being convenient for through the tail fin seat of predetermineeing on housing assembly, improved the convenience and the efficiency of lateral fin device installation greatly.

(2) Lateral fin mounting structure, through setting up the installation department into vertical form, the radian radius that slides when being convenient for reduce surfboard and turn to is set up to an acute angle contained angle with the vertical extension line of installation department to improve surfboard sports, on the other hand sets up the installation department into vertical form, improves the lateral fin device and is connected fixed convenience and stability, the processing production of being convenient for with tail fin seat.

(3) Lateral fin mounting structure, connect stably, the plug is perhaps fixed convenient dependence nature, the suitability is strong.

The utility model also discloses an electronic surfboard, include as above the lateral fin mounting structure set up first holding tank on the bottom plate along length direction's axis set up at least a set of mounting groove device on the first holding tank, every group the mounting groove device includes two mounting groove devices along bottom plate length direction's axis symmetry, all is provided with the tail fin seat in every mounting groove device.

Preferably, the lateral fin device comprises a left lateral fin and a right lateral fin, and the left lateral fin and the right lateral fin are symmetrically arranged along a central axis of the length direction of the lower base plate.

The advantages of the electric surfboard and the side fin mounting structure are the same compared with the prior art, and are not described in detail herein.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a lateral fin assembly structure of an electric surfboard according to an embodiment of the present invention;

fig. 2 is a schematic side view of a second viewing angle of the assembly structure of the lateral fin of the electric surfboard according to the embodiment of the present invention;

fig. 3 is a schematic side view of a housing assembly of an electric surfboard according to an embodiment of the present invention;

fig. 4 is a schematic view of an installation structure of the lateral fin device according to the embodiment of the present invention;

fig. 5 is an exploded schematic view of a lateral fin device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a lateral fin according to an embodiment of the present invention;

fig. 7 is a schematic side view of a second viewing angle of the lateral fin according to the embodiment of the present invention;

fig. 8 is a schematic view illustrating an included angle between a lateral fin body and an installation portion of a lateral fin according to an embodiment of the present invention;

fig. 9 is a schematic side view of a tail fin base according to an embodiment of the present invention;

fig. 10 is a schematic side view of a second viewing angle of the tail fin base according to the embodiment of the present invention;

fig. 11 is a schematic structural diagram of a housing according to an embodiment of the present invention;

fig. 12 is a schematic side view of a housing according to an embodiment of the present invention;

fig. 13 is a schematic view of an installation structure of a second viewing angle of the lateral fin device according to the embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view taken along line A-A of FIG. 13;

fig. 15 is a schematic view illustrating a second included angle between the lateral fin body and the mounting portion of the lateral fin according to the embodiment of the present invention;

description of reference numerals:

the structure of the mounting structure comprises a shell component 1, a lower base plate 101, a mounting groove device 102, a first mounting groove 102a, a second mounting groove 102b, a third mounting groove 102c, a fourth mounting groove 102d, a lateral fin device 2, a left lateral fin 2a, a right lateral fin 2b, a lateral fin body 201, a mounting portion 202, a first plug block 202a, a second plug block 202b, an avoiding groove 202c, a clamping groove 202d, a first limit groove 202e, a guide groove 202f, a second limit groove 202g, a first accommodating groove 3, a tail fin base 4, a plug groove 401, a first convex block 402, a plug 403, a housing 5, a connecting plate 501, a second convex block 502, a second mounting groove 503, a first accommodating portion 503a, a second accommodating portion 503b and a contraction portion 503 c.

Detailed Description

In order to make the technical means and the objectives and functions of the present invention easy to understand, the embodiments of the present invention will be described in detail with reference to the specific drawings.

It should be noted that all terms used in the present invention for directional and positional indication, such as: the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "lower", "transverse", "longitudinal", "center", etc. are used only for explaining the relative positional relationship, connection conditions, etc. between the respective members in a certain specific state (as shown in the drawings), and are only for convenience of description of the present invention, and do not require that the present invention must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Embodiment 1, as shown in fig. 1 to 15, the present invention discloses a lateral fin mounting structure, which comprises a lateral fin device 2, the lateral fin device 2 is detachably fixed on the shell component 1, the lateral fin device 2 comprises a lateral fin body 201 and a mounting part 202, a mounting groove device 102 is arranged on the lower bottom plate 101 of the shell component 1, a tail fin seat 4 is arranged in the mounting groove device 102, the skeg 4 comprises a plug 403 and a first projection 402, the plug 403 can be inserted into the mounting groove 102 and limited, the outer profile dimension of the first protrusion 402 is greater than the profile dimension of the mounting slot arrangement 102, the plug 403 is provided with a plug slot 401, the mounting part 202 of the lateral fin device 2 can be inserted into the plug slot 401 and limited, the first bump 402 and the lateral fin body 201 are respectively disposed on two sides of the lower base plate 101.

The utility model discloses a lateral fin mounting structure, through setting up a tail fin seat 4 on the lower surface of casing subassembly 1, the first lug 402 of tail fin seat 4 sets up in the inside of casing subassembly 1, the bayonet joint 403 of tail fin seat 4 is spacing after inserting into mounting groove device 102, lateral fin device 2 is fixed after when the installation, lateral fin device 2 is through inserting installation department 202 detachable into bayonet groove 401; when the lateral fin device 2 is removed or replaced, the mounting portion 202 of the lateral fin device 2 is pulled out of the insertion groove 401, and at this time, because the external contour size of the first protruding block 402 is larger than the contour size of the mounting groove device 102, the tail fin base 4 cannot be pulled out of the mounting groove device 102, so that the fixation or the detachment of the lateral fin device 2 is rapidly realized through an insertion or pulling-out mode.

The utility model discloses rational in infrastructure, the production of being convenient for through the tail fin seat of predetermineeing on casing assembly, has improved the convenience and the efficiency of lateral fin device installation greatly.

Preferably, as the utility model discloses a preferred embodiment, the lateral fin body 201 with installation department 202 is the contained angle setting in the junction, as the utility model discloses an example, the lateral fin body 201 with installation department 202 is the setting of form from top to bottom, installation department 202 sets up the upper end of lateral fin body 201, installation department 202 in the vertical projected extension line with lateral fin body 201 is the setting of contained angle α in vertical projection, α's value range is 2 ~15, preferably 5 ~ 10.

The utility model discloses a set up the installation department into vertical form, the radian radius that slides when being convenient for reduce surfboard and turn to is set up to an acute angle contained angle with the vertical extension line of installation department to improve surfboard sports, on the other hand sets up the installation department into vertical form, improves the fixed convenience and stability, the processing production of being convenient for of lateral fin device and tail fin seat connection.

Furthermore, as another preferred embodiment of the present invention, the mounting portion 202 is disposed at the upper end of the side fin body 201, the mounting portion 202 is disposed in an inclined manner with respect to the plug 403, and the side fin body 201 is further inclined toward the same side with respect to the mounting portion 202. as an example of the present invention, the insertion groove 401 on the tail fin seat 4 is also inclined in an inclined manner, the inclined mounting portion 202 can be inserted into the inclined insertion groove 401 to be fixed, as shown in fig. 15, an extension line of a projection of a side edge of the mounting portion 202 in the vertical direction and a side edge of the side fin body 201 are vertically projected to form an included angle α, an included angle between a projection of the side edge of the mounting portion 202 in the vertical direction and a vertical line taking an end portion of the mounting portion 202 as a starting point is β, the α and β are inclined toward the same side, for example, a vertical line taking an end portion of the mounting portion 202 far away from one end of the side fin body 201 as a starting point is L °, a side projection of the mounting portion 202 is L1 side projection, a side projection is L ° 3, a side projection range of the mounting portion 202 is preferably from 3942L 3884 to 6858, and a preferred range of the fin mount portion is 3635 ° to 3635 ° and a preferred range of the fin mount portion of the mount 3638.

Preferably, as a preferred embodiment of the present invention, a housing 5 is disposed on the bottom plate 101, the housing 5 includes a second protrusion 502 and a connecting plate 501, the second protrusion 502 is provided with a second mounting groove 503, the connecting plate 501 is detachably and fixedly connected to the bottom plate 101, and the second mounting groove 503 is sleeved on the outer side of the first protrusion 402.

As an example of the present invention, the connecting plate 501 is disposed on the outer edge plate of the second bump 502, the connecting plate 501 and the second mounting groove 503 are disposed on the same side of the second bump 502, and the connecting plate 501 and the lower bottom plate 101 are connected by any one or combination of a plug connection, a clamping connection, a screw connection, an adhesive connection, or a magnetic attraction.

This setting has further guaranteed the fixed stability of pre-buried tail fin seat, avoids the tail fin seat to lead to connecting not hard up because the side fin device is pegged graft many times or is extracted the back to influence the stability of side fin installation.

Preferably, as a preferred embodiment of the present invention, the second mounting groove 503 includes a first accommodating portion 503a, a second accommodating portion 503b, and a constricted portion 503c, and the first accommodating portion 503a and the second accommodating portion 503b are disposed on both sides of the constricted portion 503 c.

As an example of the present invention, the second mounting groove 503 is set to be a structure with two large ends and a small middle, and correspondingly, the first bump is also set to be a structure with two large ends and a small middle, so as to improve the strength of the joint of the mounting portion 202 of the first bump and the lateral fin device 2, and improve the reliability of the tail fin seat fixed and limited greatly.

This setting has improved the stability and the reliability that first lug is connected with the installation department on the one hand, and on the other hand has also reduced the probability that the tail fin seat takes place to rock when using.

Preferably, as a preferred embodiment of the present invention, the mounting portion 202 includes a first insertion block 202a and a second insertion block 202b, and an avoidance groove 202c is provided between the first insertion block 202a and the second insertion block 202 b.

As an example of the present invention, the insertion groove 401 is disposed on the insertion head 403 and extends to the first protrusion 402, when in use, the mounting portion 202 of the lateral fin device 2 first inserts the first insertion block 202a or the second insertion block 202b into the insertion groove 401, then pushes the lateral fin body 201 to drive the inserted first insertion block 202a or the second insertion block 202b to slide to a fixed position in the insertion groove 401, then presses the lateral fin body 201 to insert and position the other insertion block of the mounting portion 202, through the relief groove 202c disposed between the first insertion block 202a and the second insertion block 202b, on one hand, the mounting portion 202 of the lateral fin device is convenient to fix, and also the mounting portion of the lateral fin device and the tail fin base are prevented from generating stress concentration and deforming or breaking when being mounted, and at the same time, the mounting portion 202 is mounted to a fixed position, the first insertion block 202a and the second insertion block 202b are inserted into two ends of the insertion groove 401, the avoidance groove 202c corresponds to the middle of the insertion groove 401, which is convenient for the first bump 402 on the tail fin base 4 to form a limit structure with two large ends and a small middle.

Further, as a preferred embodiment of the present invention, a clamping groove 202d is disposed on the mounting portion 202, and the clamping groove 202d is disposed at an end position of the mounting portion 202. As an example of the present invention, the card slot 202d is disposed on the first insertion block 202a, the one end of the second insertion block 202b is kept away from, the card slot 202d is an opening-shaped configuration, a first fixture block corresponding to the card slot 202d is disposed in the insertion slot 401, when the lateral fin device 2 is installed, the first insertion block 202a is inserted into the insertion slot 401 to push the first insertion block 202a to slide in the insertion slot 401, when the card slot 202d on the first insertion block 202a touches the first fixture block in the insertion slot 401, the second insertion block 202b is inserted into the insertion slot 401 to fix the installation portion 202.

This arrangement further improves the ease and efficiency of installation of the lateral fin device.

Further, as a preferred embodiment of the present invention, a first limiting groove 202e is provided on the first insertion block 202a, a second limiting groove 202g is provided on the second insertion block 202b, and the first limiting groove 202e and the second limiting groove 202g are provided on the left and right sides of the lateral fin body 201.

As an example of the present invention, the first spacing groove 202e the second spacing groove 202g is a circular arrangement, the first spacing groove 202e the second spacing groove 202g can be a blind hole, and also can be a slotted hole or a through hole, and the first spacing groove 202e and the second spacing groove 202g are respectively arranged on the first plug-in block 202a and the second plug-in block 202b, correspondingly, the second fixture block which can be connected with the first spacing groove 202e and the second spacing groove 202g in a limiting way is arranged in the plug-in groove 401, so as to ensure the mounting part to be mounted in place and then to be in a limiting way.

Further, as a preferred embodiment of the present invention, a guide groove 202f is provided on the second insertion block 202 b. As an example of the utility model, guide way 202f with second spacing groove 202g sets up respectively the both sides of second plug block 202b, the one end of guide way 202f with dodge groove 202c UNICOM, guide way 202f leads the installation department when lateral fin device and tail fin seat fixed mounting, further improves the convenience and the reliability of lateral fin device installation.

Embodiment 2, the utility model also discloses an electronic surfboard, including housing assembly 1 be provided with on housing assembly 1's the lower plate 101 mounting groove device 102 as in embodiment 1 be provided with in mounting groove device 102 as in embodiment 1 the lateral fin device 2.

As an example of the present invention, the lateral fin device 2 includes a left lateral fin 2a and a right lateral fin 2b, an included angle is formed between the lateral fin body 201 on the left lateral fin 2a and the mounting portion 202, and an included angle is formed between the lateral fin body 201 on the right lateral fin 2b and the mounting portion 202, which are symmetrically disposed. Preferably, when the left fin 2a and the right fin 2b are fixed on the housing component 1, the lateral fin body 201 of the left fin 2a inclines towards the left side, the lateral fin body 201 of the right fin 2b inclines towards the right side, that is, the lateral fin body 201 of the lateral fin device 2 arranged on the housing component 1 inclines towards the outside, the left fin 2a and the right fin 2b are symmetrically arranged along the central axis of the length direction of the lower base plate 101, and other structures of the left fin 2a and the right fin 2b are the same as those of embodiment 1, which is not repeated herein.

This setting has guaranteed the reliability and the validity of the adjustment of lateral fin device to electronic surfboard direction through two lateral fin devices 2 of symmetry setting on the casing subassembly.

As an example of the present invention, lower plate 101 sets up first holding tank 3 along length direction's axis set up multiunit mounting groove device 102, every group on first holding tank 3 mounting groove device 102 includes two mounting groove devices 102 along lower plate 101 length direction's axis symmetry, all is provided with tail fin seat 4 in every mounting groove device 102. For example, in the present invention, the first accommodating groove 3 is used for accommodating a propulsion system of an electric surfboard, the mounting groove device 102 includes a first mounting groove 102a and a second mounting groove 102b, and the first mounting groove 102a and the second mounting groove 102b are symmetrically disposed on two sides of a central axis of the lower base plate 101 along a length direction; or, the mounting groove device 102 includes a first mounting groove 102a, a second mounting groove 102b, a third mounting groove 102c, and a fourth mounting groove 102d, where the first mounting groove 102a and the second mounting groove 102b are symmetrically disposed on two sides of the central axis of the lower plate 101 along the length direction, the third mounting groove 102c and the fourth mounting groove 102d are symmetrically disposed on two sides of the central axis of the lower plate 101 along the length direction, and the first mounting groove 102a and the third mounting groove 102c are disposed on the same side of the first mounting groove 3 and are disposed in a staggered manner.

This setting makes the user select corresponding mounting groove device to carry out lateral fin device fixed mounting according to different demands, thereby improves the utility model discloses an suitability.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lateral fin mounting structure comprises a lateral fin device (2), wherein the lateral fin device (2) is detachably fixed on a shell assembly (1), the lateral fin device (2) is characterized by comprising a lateral fin body (201) and a mounting portion (202), a mounting groove device (102) is arranged on a lower bottom plate (101) of the shell assembly (1), a tail fin seat (4) is arranged in the mounting groove device (102), the tail fin seat (4) comprises a plug-in connector (403) and a first convex block (402), the plug-in connector (403) can be inserted into the mounting groove device (102) and limited, the outer contour size of the first convex block (402) is larger than that of the mounting groove device (102), a plug-in groove (401) is arranged on the plug-in connector (403), the mounting portion (202) of the lateral fin device (2) can be inserted into the plug-in groove (401) and limited, the first bump (402) and the lateral fin body (201) are respectively arranged on two sides of the lower base plate (101).

2. The lateral fin mounting structure according to claim 1, wherein the lateral fin body (201) is disposed at an angle to the mounting portion (202) at a junction.

3. The lateral fin mounting structure according to claim 2, wherein the mounting portion (202) is disposed at an upper end of the lateral fin body (201), the mounting portion (202) is disposed in an inclined shape, and the lateral fin body (201) is further inclined to the same side with respect to the mounting portion (202).

4. The lateral fin mounting structure of claim 2, wherein an extension line of a vertical projection of a side edge of the mounting portion (202) and a vertical projection of a side edge of the lateral fin body (201) form an included angle α, an included angle between the vertical projection of the side edge of the mounting portion (202) and a vertical line with an end of the mounting portion (202) as a starting point is β, the α and the β are inclined to the same side of the vertical line, a value of the α ranges from 2 ° to 15 °, and a value of the β ranges from 2 ° to 8 °.

5. The lateral fin mounting structure of claim 1, wherein a cover shell (5) is arranged on the lower base plate (101), the cover shell (5) comprises a second convex block (502) and a connecting plate (501), a second mounting groove (503) is arranged on the second convex block (502), the connecting plate (501) is detachably and fixedly connected with the lower base plate (101), and the second mounting groove (503) is sleeved outside the first convex block (402).

6. The lateral fin mounting structure according to claim 1, wherein the mounting portion (202) includes a first insertion block (202 a) and a second insertion block (202 b), and an avoidance groove (202 c) is provided between the first insertion block (202 a) and the second insertion block (202 b).

7. The lateral fin mounting structure according to claim 2, wherein a catching groove (202 d) is provided on the mounting portion (202), the catching groove (202 d) being provided at an end position of the mounting portion (202).

8. The lateral fin mounting structure according to claim 6, wherein a first limit groove (202 e) is provided on the first insertion block (202 a), a second limit groove (202 g) is provided on the second insertion block (202 b), and the first limit groove (202 e) and the second limit groove (202 g) are provided on both left and right sides of the lateral fin body (201).

9. An electric surfboard, comprising the sidefin mounting structure according to any one of claims 1 to 8, wherein a first receiving groove (3) is formed in the lower base plate (101) along the central axis of the length direction, at least one set of mounting groove means (102) is formed in the first receiving groove (3), each set of mounting groove means (102) comprises two mounting groove means (102) symmetrical along the central axis of the length direction of the lower base plate (101), and a tail fin seat (4) is formed in each mounting groove means (102).

10. The electric surfboard according to claim 9, wherein the lateral fin device (2) comprises a left lateral fin (2 a) and a right lateral fin (2 b), and the left lateral fin (2 a) and the right lateral fin (2 b) are symmetrically arranged along a central axis of the length direction of the lower base plate (101).