CN209757460U

CN209757460U - Stringer-free surfboard

Info

Publication number: CN209757460U
Application number: CN201920427326.0U
Authority: CN
Inventors: 曹永祥
Original assignee: Huizhou Bolang Sporting Goods Co Ltd
Current assignee: Huizhou Bolang Sporting Goods Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2019-12-10
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a no stringer surfboard, it includes: the left plate comprises a left rail, and a plurality of left grooves are concavely formed in the left rail; the right plate comprises a right rail, and a plurality of right grooves are concavely formed in the right rail; the left board and the right board respectively comprise a first foam plastic with a first density positioned at the outer side of the surfboard and a second foam plastic with a second density positioned at the middle of the surfboard, and the second density is greater than the first density; the left grooves and the right grooves extend in the longitudinal direction of the surfboard respectively, the left grooves intersect at two end points thereof to form at least one left rib extending in the longitudinal direction, and the right grooves intersect at two end points thereof to form at least one right rib extending in the longitudinal direction. The utility model discloses do not set up wooden stringer for whole surfboard is flexible, and the centre and the outside of surfboard have different densities, and the centre has bigger density, and in addition the design of left recess and right recess makes the weight of surfboard lighter, intensity stronger, flexibility better.

Description

Stringer-free surfboard

Technical Field

The utility model relates to the field of sports equipment, especially, indicate a no stringer surfboard.

background

Surfboards are sports equipment used for surfing, and with the technical progress, foam plastic boards are appeared, and the shapes of the boards are improved.

The flexibility of surfboards, otherwise known as flexibility, is one of the important properties of modern surfboards. This flexibility may allow the board to maintain the proper amount of bending without deforming or breaking, and may store energy while bending so that the board may subsequently return to its original shape and in the process convert the released elastic potential energy into kinetic energy, which may be converted into acceleration to better assist the surfer in better turning while surfing, and thus the board needs to maintain a balance between stiffness and flexibility.

As shown in fig. 1 and 2, a surfboard 200 of the prior art includes a first board body 201, a second board body 202, and a stringer 203 disposed between the first board body 201 and the second board body 202, wherein the first board body 201 and the second board body 202 are made of foam plastic, and the stringer 203 is made of wood material. The strength and rigidity of the surfboard 200 can be increased by providing wooden stringers 203 to the surfboard 200.

However, such a surfboard 200 suffers from a number of drawbacks. First, the stringers 203 make the center of the surfboard 200 rigid, and although the foam on both sides of the surfboard 200 is flexible, it still causes the surfboard 200 to be curved in its entirety unevenly, and the center portion to be difficult to bend, resulting in difficulty in obtaining an acceleration effect of the surfboard 200 during surfing. Secondly, the wooden stringers 203 not only add weight to the surfboard 200, but also increase the difficulty of assembly.

Therefore, there is a need to design a better surfboard to solve the disadvantages of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a no stringer surfboard does not set up wooden stringer for whole surfboard is flexible, and the centre of surfboard has different density with the outside, and the centre has bigger density, and the design of left recess and right recess in addition makes the weight of surfboard lighter, intensity is stronger, the flexibility is better.

To the above purpose, the utility model adopts the following technical scheme:

A stringer-less surfboard comprising: the left plate comprises a left rail, and a plurality of adjacent left grooves are formed in the left rail in a downward concave mode from the top of the surfboard; the right plate is matched with the left plate in shape and spliced on one side of the left plate, the right plate comprises a right rail, and a plurality of adjacent right grooves are formed in the right rail in a downward concave mode from the top of the surfboard; the left board and the right board are made of foam, the left board and the right board respectively comprise a first foam with a first density at the outer side of the surfboard and a second foam with a second density at the middle of the surfboard, and the second density is greater than the first density; the left rail and the right rail respectively extend from the head of the surfboard to the tail of the surfboard along the length direction, and the left rail and the right rail are made of the first foamed plastic; the left groove and the right groove respectively extend along the longitudinal direction of the surfboard, the left grooves are intersected at two end points of the left grooves to form at least one left convex strip extending along the longitudinal direction, and the right grooves are intersected at two end points of the right grooves to form at least one right convex strip extending along the longitudinal direction.

Further, the left plate has a vertical first side, and the right plate has a vertical second side that mates with the first side.

Further, a connecting layer is arranged between the left plate and the right plate to provide connecting force between the left plate and the right plate, and the shape of the connecting layer is matched with the shapes of the first side face and the second side face.

Further, the first foam has a first color and the second foam has a second color, the first color being different from the second color.

Further, in the length direction of the left rail, the curvature of the left groove is consistent with the curvature of the left rail; the curvature of the right groove coincides with the curvature of the right rail in the length direction of the right rail.

Further, the plurality of left grooves includes a left outer groove and a left inner groove, the left outer groove having a greater curvature in a lateral direction than the left inner groove; the plurality of right grooves includes a right outer groove and a right inner groove, and the right outer groove has a greater curvature in a lateral direction than the right inner groove.

Further, the left plate and the right plate are symmetrical left and right, and the left groove and the right groove are symmetrical left and right.

Further, the outer sides of the left groove and the right groove are respectively provided with a groove laminated layer matched with the shapes of the left groove and the right groove.

Further, the outer sides of the left plate and the right plate are respectively provided with a plate lamination layer matched with the shapes of the left plate and the right plate, and the groove lamination layer and the plate lamination layer form a lamination structure covering the whole surfboard.

Further, the top surface shapes of the left convex strip and the right convex strip are matched with the top surface shape of the surfboard.

compared with the prior art, the beneficial effects of the utility model are that:

(1) Because the second foam plastic is positioned in the middle of the surfboard, and the second density of the second foam plastic is greater than the first density of the first foam plastic, the middle of the surfboard has better structural strength, and the second foam plastic can be used as a spine to ensure the stability of the whole structure of the surfboard. In addition, because the left plate and the right plate are both made of the foam plastics and are not provided with wooden purlins, the surfboard can show better flexibility and lighter weight as a whole.

(2) By providing the left and right grooves, the surfboard can be supplemented with the required flexibility and rigidity. Typically, when a surfer is surfing, the board may bend upwards and store potential energy, and as the board continues to bend, the compressive stress at the top of the board and the tensile stress at the bottom of the board approach their respective maximum values, and if their maximum compressive and tensile stresses are reached, the foam of the board will fail, resulting in the board breaking. To prevent the board from reaching maximum compressive and tensile stresses, the left and right grooves may provide the rigidity and flexibility required of the board to prevent excessive bending of the board in a particular direction. In addition, the left and right grooves can also reduce the weight of the surfboard appropriately.

Drawings

FIG. 1 is a perspective view of a surfboard of the prior art;

FIG. 2 is an exploded perspective view of a surfboard of the prior art;

FIG. 3 is a perspective view of the preferred embodiment of the present invention;

Fig. 4 is a top view of the preferred embodiment of the present invention;

fig. 5 is an exploded view of the preferred embodiment of the present invention;

FIG. 6 is a partial perspective view of the preferred embodiment of the present invention;

fig. 7 is a diagram of the left and right panels of the preferred embodiment of the present invention in a spliced configuration;

Fig. 8 is a schematic view of a laminate layer according to a preferred embodiment of the present invention.

The reference numbers illustrate:

100 surfboard

1 left board

11 left rail

12 left groove

121 left outer groove

122 left inner side groove

13 left convex strip

14 left front end point

15 left rear end point

16 first side of

2 right board

21 right rail

22 right groove

221 Right outer groove

222 right inner groove

23 Right convex strip

24 right front end point

25 rear right end point

26 second side

3 head part

4 tail part

5 top part

6 bottom

7 connecting layer

8 first foamed plastic

9 second foam

10 groove lamination layer

20 ply laminate

Detailed Description

for the purpose of promoting a better understanding of the objects, structures, features, and functions of the invention, reference should now be made to the drawings and detailed description of the invention. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale. Moreover, the described embodiments are only some of the described embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "front", "rear", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 3 and 4, a stringer-less surfboard 100 according to a preferred embodiment of the present invention includes a left board 1 and a right board 2. The surfboard 100 has a head 3, a tail 4, a top 5 and a bottom 6. The top 5 of the surfboard 100 refers to the upper side of the surfboard 100 where the surfer's feet are placed. The left panel 1 is located on the left and the right panel 2 is located on the right, as viewed from above and below the top 5 of the surfboard 100. The bottom 6 of the surfboard 100 refers to the underside of the surfboard 100, i.e. the side that is in contact with the water surface. The longitudinal direction refers to a direction from the head 3 of the surfboard 100 to the tail 4 of the surfboard 100, and is also referred to as a length direction. The lateral direction refers to a direction from the left plate 1 to the right plate 2, and is also referred to as a width direction. The length of the surfboard 100 is greater than its width. The head 3 of the surfboard 100 assumes a relatively pointed shape and the tail 4 of the surfboard 100 assumes a relatively flat shape, which may improve the playing characteristics of the surfboard 100.

The left panel 1 includes a left rail 11, the left rail 11 being recessed from the top 5 of the surfboard 100 with an adjacent plurality of left grooves 12.

The right plate 2 is matched with the left plate 1 in shape and spliced on one side of the left plate 1, the right plate 2 comprises a right rail 21, and the right rail 21 is provided with a plurality of adjacent right grooves 22 which are downwards recessed from the top 5 of the surfboard 100.

as shown in fig. 7, the left and right panels 1 and 2 are formed of foam, and the foam used may include polystyrene foam (EPS), polyurethane foam (PU), and the like. The left and right boards 1 and 2 respectively include a first foam 8 of a first density located on the outside of the surfboard 100 and a second foam 9 of a second density located in the middle of the surfboard 100, the second density being greater than the first density. The first foam 8 and the second foam 9 may be foams having the same material but different densities, or may be foams having different densities and different materials, as required.

Since the second plastic foam 9 is located in the middle of the surfboard 100 and the second plastic foam 9 has the second density greater than the first density of the first plastic foam 8, the middle of the surfboard 100 may have better structural strength, and the second plastic foam 9 may serve as a spine to ensure stability of the overall structure of the surfboard 100. In addition, since the left and right panels 1 and 2 are made of foam, wooden stringers are not provided, so that the surfboard 100 as a whole may exhibit superior flexibility and be lightweight.

As shown in fig. 3, 4 and 6, the left rail 11 and the right rail 21 extend in the length direction from the head 3 of the surfboard 100 to the tail 4 of the surfboard 100, respectively, and the left rail 11 and the right rail 21 are formed of the first foam 8, i.e., the first foam 8 is configured in a shape including at least the entire area of the left rail 11 and the right rail 21. Thus, the left and right grooves 12, 22 are also constructed from the first foam 8.

The left and right grooves 12 and 22 extend in the longitudinal direction of the surfboard 100, respectively, the plurality of left grooves 12 intersecting at both end points thereof to form at least one left bead 13 extending in the longitudinal direction, and the plurality of right grooves 22 intersecting at both end points thereof to form at least one right bead 23 extending in the longitudinal direction. In the present embodiment, only one of the left protrusion 13 and the right protrusion 23 is provided. The plurality of left grooves 12 intersect at a left anterior endpoint 14 and a left posterior endpoint 15, and the plurality of right grooves 22 intersect at a right anterior endpoint 24 and a right posterior endpoint 25. The left and right channels 12, 22 may have any suitable depth as practical without compromising the structural integrity of the surfboard 100.

By providing the left and right recesses 12, 22, the surfboard 100 can be supplemented with the desired flexibility and rigidity. In general, when a surfer is surfing, the surfboard 100 may bend upward and store potential energy, and as the surfboard 100 continues to bend, the compressive stress at the top 5 of the surfboard 100 and the tensile stress at the bottom 6 of the surfboard 100 approach their respective maximum values, and if their maximum compressive and tensile stresses are reached, the foam of the surfboard 100 will fail, resulting in the surfboard 100 breaking. To prevent the surfboard 100 from reaching maximum compressive and tensile stresses, the left and right channels 12 and 22 may provide the rigidity and flexibility required of the surfboard 100 to prevent excessive bending of the surfboard 100 in a particular direction. In addition, the left and right recesses 12 and 22 can also appropriately reduce the weight of the surfboard 100.

As shown in fig. 5 and 7, the left panel 1 has a vertical first side 16, and the right panel 2 has a vertical second side 26 that mates with the first side 16. Arranging the first and second sides 16, 26 to be vertical facilitates the joining of the left and right panels 1, 2 and facilitates the machining.

A connecting layer 7 is arranged between the left plate 1 and the right plate 2 to provide a connecting force between the left plate 1 and the right plate 2, and the shape of the connecting layer 7 is matched with the shapes of the first side surface 16 and the second side surface 26. The material of the connecting layer 7 may be any plastic material suitable for providing a permanent connecting force, and the main purpose thereof is to tightly connect the left and right plates 1 and 2 together to form a permanent joint, and to provide a shock-absorbing effect between the left and right plates 1 and 2 to absorb the impact force absorbed by the left or right plates 1 and 2. The material of the connecting layer 7 is preferably Thermoplastic Polyurethane (TPU), which has high shear strength and high elasticity.

The first foam 8 has a first color and the second foam 9 has a second color, the first color being different from the second color, such that the different colors between the different foams can be fully utilized, such that the surfboard 100 can be entirely rendered in different colors without the need for post-spraying, resulting in a variety of aesthetic combinations and appeal to the consumer's eye.

As shown in fig. 4, in the length direction of the left rail 11, the curvature of the left groove 12 coincides with the curvature of the left rail 11; the curvature of the right groove 22 coincides with the curvature of the right rail 21 in the length direction of the right rail 21. The plurality of left grooves 12 include a left outer groove 121 and a left inner groove 122, the left outer groove 121 having a larger curvature in the lateral direction than the left inner groove 122; the plurality of right grooves 22 includes a right outer groove 221 and a right inner groove 222, and the right outer groove 221 has a greater curvature than the right inner groove 222 in the lateral direction. The left plate 1 and the right plate 2 are bilaterally symmetrical, and the left groove 12 and the right groove 22 are bilaterally symmetrical. Such a design facilitates the left and right channels 12, 22 to provide the surfboard 100 with suitable flexibility and rigidity.

As shown in fig. 8, the outer sides of the left and right recesses 12, 22 are provided with recess laminate layers 10 adapted to the shape of the left and right recesses 12, 22, respectively, the recess laminate layers 10 being coatings attached to the outer sides of the recesses by lamination techniques. The material of the groove laminate layer 10 may comprise fiberglass cloth, Kevlar (Kevlar), carbon fiber, or other suitable material. The provision of the recess laminate layer 10 allows for more fine tuning of the flexibility and rigidity of the surfboard 100. For example, if the recess laminate layer 10 is not provided, the surfboard 100 has maximum flexibility and minimum rigidity; the surfboard 100 has minimal flexibility and maximum stiffness if the recess laminate layer 10 is provided. By finely adjusting the recess laminate layer 10, the purpose of finely adjusting the flexibility and rigidity of the surfboard 100 can be achieved. The outer sides of the left and right panels 1 and 2 are respectively provided with a ply lamination layer 20 adapted to the shape of the left and right panels 1 and 2, and the groove lamination layer 10 and the ply lamination layer 20 constitute a lamination structure covering the entire surfboard 100.

As shown in fig. 7, the top surface shapes of the left rib 13 and the right rib 23 are matched with the top surface shape of the surfboard 100, so that the overall shape of the surfboard 100 is consistent.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims

1. A stringer-less surfboard comprising:

the left plate comprises a left rail, and a plurality of adjacent left grooves are formed in the left rail in a downward concave mode from the top of the surfboard;

The right plate is matched with the left plate in shape and spliced on one side of the left plate, the right plate comprises a right rail, and a plurality of adjacent right grooves are formed in the right rail in a downward concave mode from the top of the surfboard;

The left board and the right board are made of foam, the left board and the right board respectively comprise a first foam with a first density at the outer side of the surfboard and a second foam with a second density at the middle of the surfboard, and the second density is greater than the first density;

The left rail and the right rail respectively extend from the head of the surfboard to the tail of the surfboard along the length direction, and the left rail and the right rail are made of the first foamed plastic;

The left groove and the right groove respectively extend along the longitudinal direction of the surfboard, the left grooves are intersected at two end points of the left grooves to form at least one left convex strip extending along the longitudinal direction, and the right grooves are intersected at two end points of the right grooves to form at least one right convex strip extending along the longitudinal direction.

2. The stringer-less surfboard of claim 1 wherein: the left plate has a vertical first side and the right plate has a vertical second side that mates with the first side.

3. The stringer-less surfboard of claim 2 wherein: a connecting layer is arranged between the left plate and the right plate to provide connecting force between the left plate and the right plate, and the shape of the connecting layer is matched with the shapes of the first side face and the second side face.

4. the stringer-less surfboard of claim 1 wherein: the first foam has a first color and the second foam has a second color, the first color being different from the second color.

5. The stringer-less surfboard of claim 1 wherein: the curvature of the left groove is consistent with that of the left rail in the length direction of the left rail; the curvature of the right groove coincides with the curvature of the right rail in the length direction of the right rail.

6. The stringer-less surfboard of claim 5 wherein: the plurality of left grooves include a left outer groove and a left inner groove, the left outer groove having a greater curvature in a lateral direction than the left inner groove; the plurality of right grooves includes a right outer groove and a right inner groove, and the right outer groove has a greater curvature in a lateral direction than the right inner groove.

7. the stringer-less surfboard of claim 1 wherein: the left plate and the right plate are symmetrical left and right, and the left groove and the right groove are symmetrical left and right.

8. The stringer-less surfboard of claim 1 wherein: and groove laminated layers matched with the left groove and the right groove in shape are respectively arranged on the outer sides of the left groove and the right groove.

9. The stringer-less surfboard of claim 7 wherein: the outer sides of the left plate and the right plate are respectively provided with a plate lamination layer matched with the left plate and the right plate in shape, and the groove lamination layer and the plate lamination layer form a lamination structure covering the whole surfboard.

10. the stringer-less surfboard of claim 1 wherein: the shapes of the top surfaces of the left convex strip and the right convex strip are matched with the shape of the top surface of the surfboard.