CN209739296U - Surfboard - Google Patents

Abstract

The utility model discloses a surfboard, include: the stringer is provided with an upper surface and a lower surface, the upper surface is concavely provided with a plurality of upper grooves, and the lower surface is concavely provided with a plurality of lower grooves; the first plate comprises a first body and a first covering layer, the first plate is provided with a first top surface and a first bottom surface, the first top surface and the first bottom surface are provided with a plurality of first holes, and the first holes penetrate through the first covering layer to enable the surface of the first body to be communicated with the outside; the second plate comprises a second body and a second covering layer, the second plate is provided with a second top surface and a second bottom surface, the second top surface and the second bottom surface are provided with a plurality of second holes, and the second holes penetrate through the second covering layer to enable the surface of the second body to be communicated with the outside; the first body and the second body are made of closed cell foam. The utility model discloses a set up upper groove and low groove at the stringer, can increase the flexibility of stringer to adopt obturator foamed plastic to make first body and second body, make the surfboard be difficult for absorbing water.

Description

surfboard

Technical Field

the utility model relates to the field of sports equipment, especially, indicate a surfboard.

Background

Surfboards are sports equipment that people use for surfing. Initially, most surfboards were all made of wood material, making them stiff and heavy, but with advances in technology many manufacturers have begun using foam plastic materials in surfboards and improvements in surfboard shape.

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.

The present surfboards generally comprise wooden beams and an open-cell foam board adhered to both sides of the wooden beams, and the outer side of the open-cell foam board is covered with a waterproof layer. While the wooden stringers enhance the structural strength of the board, they significantly reduce the flexibility of the board, making it less than fully flexible uniformly, and not yielding the amount of bending that is required in a particular direction, resulting in the board not being able to gain acceleration when turning, and also being prone to board breakage when the board is used for a long time or bent too much. In addition, when the waterproof layer is broken, the open-cell foam easily absorbs moisture, and when the open-cell foam absorbs moisture, its weight is increased so much that the buoyancy of the surfboard is reduced and it is difficult to use. And, because the waterproof layer forms the sealing layer, when there is entrapment bubble between trompil foamed plastic and the waterproof layer, it can't be effectively discharged in time, when these entrapment bubbles are heated and expanded, lead to waterproof layer and plastics layering easily.

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

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a surfboard through set up upper groove and low groove at the stringer, can increase the flexibility of stringer to adopt obturator foamed plastic to make first body and second body, make surfboard be difficult for absorbing water.

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

A surfboard comprising: the stringer is made of a wood material and is provided with an upper surface and a lower surface, the upper surface is downwards concavely provided with a plurality of upper grooves, and the lower surface is upwards concavely provided with a plurality of lower grooves; the first plate is arranged on one side of the stringer and comprises a first body and a first covering layer covering the outer side of the first body, the first plate is provided with a first top surface and a first bottom surface, a plurality of first holes are formed in the first top surface and the first bottom surface, and the first holes penetrate through the first covering layer to enable the surface of the first body to be communicated with the outside; the second plate is arranged on the other side of the stringer and comprises a second body and a second covering layer covering the outer side of the second body, the second plate is provided with a second top surface and a second bottom surface, a plurality of second holes are formed in the second top surface and the second bottom surface, and the second holes penetrate through the second covering layer to enable the surface of the second body to be communicated with the outside; the first body and the second body are made of closed cell foam.

Further, the depth of the upper groove and the depth of the lower groove are matched with the thickness of the stringer.

Furthermore, the upper grooves and the lower grooves are distributed in a staggered manner from top to bottom.

Further, the depth of each upper groove is not more than half the thickness of the stringer at that location, and the depth of each lower groove is not more than half the thickness of the stringer at that location.

Furthermore, the upper groove and the lower groove are filled with elastic materials.

further, the upper groove and the lower groove are rectangular grooves.

Further, the stringer comprises a left side and a right side that are arranged at intervals, the first panel comprises a first side, the second panel comprises a second side, the first side and the left side are matched in shape to be attached to the first side, and the second side and the right side are matched in shape to be attached to the second side.

further, the first holes include a plurality of first hole groups uniformly distributed in a longitudinal direction, each of the first hole groups includes a plurality of first holes uniformly distributed in a lateral direction, the second holes include a plurality of second hole groups uniformly distributed in a longitudinal direction, each of the second hole groups includes a plurality of second holes uniformly distributed in a lateral direction.

Further, the first plate and the second plate are symmetrical left and right, and the first hole and the second hole are symmetrical left and right.

Further, the first hole and the second hole are provided in an inclined or curved manner.

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

(1) The upper groove and the lower groove are arranged on the wooden purlins, so that the flexibility of the purlins can be improved on the basis of ensuring the structural strength of the purlins, the flexibility of the surfboard is improved, a surfer can obtain required acceleration when turning the surfboard, the surfboard is not easy to break, and the service life is longer.

(2) The first and second apertures are sized to allow air to pass between the cover and the body while allowing little or no water to pass therethrough. Since even closed-cell foams have a low water absorption, direct contact with water is preferably avoided as much as possible. By providing the first and second holes, air bubbles formed between the cover layer and the body can be effectively removed.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

FIG. 2 is a top view of the preferred embodiment of the present invention;

Fig. 3 is an exploded perspective view of the preferred embodiment of the present invention;

FIG. 4 is a side view of a stringer in accordance with a preferred embodiment of the present invention;

Fig. 5 is a cross-sectional view of the preferred embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5;

fig. 7 is a schematic view of the assembly process of stringers and elastomeric material according to other embodiments of the invention;

Fig. 8 is a schematic view of a stringer assembled with an elastic material according to another embodiment of the present invention.

Reference numerals:

100 surfboard

1 board head

2 board tail

3 plate top

4 bottom plate

5 board side

6 stringer

61 left side surface

62 right side

63 upper surface of the main body

64 lower surface

65 upper groove

66 lower groove

7 first plate

71 first side surface

72 first top surface

73 first bottom surface

74 first body

75 first cover layer

76 first hole

761 first hole set

8 second plate

81 second side

82 second top surface

83 second bottom surface

84 second body

85 second cover layer

86 second hole

861 second set of holes

9 elastic material

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. 1 and 2, a surfboard 100 according to a preferred embodiment of the present invention is elongated, i.e. the length is greater than the width. The surfboard 100 comprises a board head 1, a board tail 2, a board top 3, a board bottom 4 and two board sides 5, wherein the board head 1 and the board tail 2 are respectively arranged at two longitudinal ends of the surfboard 100, and the surfboard 100 extends between the board head 1 and the board tail 2. The board top 3 and the board bottom 4 define the curved shape of the surfboard 100. The plate head 1 takes a relatively sharp shape and the plate tail 2 takes a relatively flat shape. The board top 3 is where the surfer stands, and the board bottom 4 is where the surfboard 100 is in direct contact with water. The two board sides 5 are respectively provided on both lateral sides of the surfboard 100.

As shown in fig. 3, the surfboard 100 includes a stringer 6 provided at a longitudinal center thereof and a first board 7 and a second board 8 provided at both sides, the first board 7 and the second board 8 being bilaterally symmetrical. The stringer 6 comprises a left side 61 and a right side 62 spaced apart, the first panel 7 comprises a first side 71, the second panel 8 comprises a second side 81, the first side 71 and the left side 61 are shaped to conform thereto, and the second side 81 and the right side 62 are shaped to conform thereto. The first and second panels 7, 8 are permanently bonded to the stringer 6 by known methods, including bonding with known adhesives, such as thermoplastic polyurethane, which have high shear strength to secure the first and second panels 7, 8 to the stringer 6, and good resilience to provide some cushioning.

As shown in fig. 3 and 4, the stringer 6 is made of a wood material, which is a known wood material for making the stringer 6. The stringer 6 has an upper surface 63 and a lower surface 64, the upper surface 63 being recessed downwardly with a plurality of upper grooves 65 and the lower surface 64 being recessed upwardly with a plurality of lower grooves 66, the number, size and shape of the upper and lower grooves 65, 66 being dependent on the degree of flexibility required of the surfboard 100 and the location on the board where flexibility is required, i.e. the number, size and shape of the upper and lower grooves 65, 66 may be designed as desired. In this embodiment, the upper groove 65 extends substantially vertically downward and the lower groove 66 extends substantially vertically upward, but in other embodiments, the upper groove 65 and the lower groove 66 may extend obliquely.

The depth of the upper and lower grooves 65, 66 is adapted to the thickness of the stringer 6, and since the shape of the stringer 6 varies with the shape of the surfboard 100, the stringer 6 may have different thicknesses in the longitudinal direction, and in order to ensure the structural integrity of the stringer 6 and the structural strength of the stringer 6, the thickness of the upper and lower grooves 65, 66 varies with the thickness of the stringer 6, i.e. where the thickness of the stringer 6 is thicker, the depth of the upper and lower grooves 65, 66 is deeper, and where the thickness of the stringer 6 is thinner, the depth of the upper and lower grooves 65, 66 is shallower. Preferably, the depth of each upper groove 65 is no more than half the thickness of the stringer 6 thereat and the depth of each lower groove 66 is no more than half the thickness of the stringer 6 thereat.

The upper grooves 65 and the lower grooves 66 are staggered up and down in sequence, that is, the vertical center lines of the upper grooves 65 and the lower grooves are staggered with each other, which avoids the simultaneous arrangement of the upper grooves 65 and the lower grooves 66 at the same upper and lower positions of the stringer 6, and also aims to maintain the structural strength of the stringer 6 as much as possible on the basis of enhancing the flexibility of the stringer 6.

In this embodiment, the upper groove 65 and the lower groove 66 are rectangular grooves. However, it is to be readily understood that a rectangular shape is only a preferred embodiment, and in the embodiment thereof, the upper and lower grooves 65 and 66 may be triangular grooves, trapezoidal grooves, or the like.

when the first 7 and second 8 panels are glued to the stringer 6, the glue may flow into the upper 65 or lower 66 grooves. The adhesive is typically stiff and rigid after it has been formed, and so the adhesive may affect the flexibility of the stringer 6. To prevent this and also to further control the flexibility of the stringer 6, in other embodiments the upper and lower grooves 65, 66 are filled with an elastomeric material 9, as shown in figures 7 and 8. The elastic material 9 used is a known material, for example a rubber material.

By providing the upper and lower grooves 65, 66 on the wooden stringers 6, the flexibility of the stringers 6 is improved while the structural strength of the stringers 6 is maintained, thereby improving the flexibility of the surfboard 100, enabling a surfer to obtain a desired acceleration while turning with the surfboard 100, and enabling the surfboard 100 to be less likely to break and to have a longer life.

As shown in fig. 1, 5 and 6, the first plate 7 is disposed on one side of the stringer 6, the first plate 7 includes a first body 74 and a first covering layer 75 covering the outside of the first body 74, the first plate 7 has a first top surface 72 and a first bottom surface 73, the first top surface 72 and the first bottom surface 73 are provided with a plurality of first holes 76, and the first holes 76 penetrate through the first covering layer 75 to communicate the surface of the first body 74 with the outside.

The second plate 8 is arranged on the other side of the stringer 6, the second plate 8 comprises a second body 84 and a second covering layer 85 covering the outer side of the second body 84, the second plate 8 has a second top surface 82 and a second bottom surface 83, the second top surface 82 and the second bottom surface 83 are provided with a plurality of second holes 86, and the second holes 86 penetrate through the second covering layer 85 to enable the surface of the second body 84 to be communicated with the outside.

The first and second cover layers 75 and 85 cover the outer sides of the first and second bodies 74 and 84, which refer to the areas of the first and second bodies 74 and 84 exposed to the outside, and are not limited to the top and bottom surfaces. For example, due to the arrangement of the upper and lower grooves 65, 66, the sides of the first and second bodies 74, 84 may also have local areas exposed to the outside, and these exposed areas may also have the first and second cover layers 75, 85.

The material of the first cover layer 75 and the second cover layer 85 is the same, and a sealing layer is formed outside the first body 74 and the second body 84, which mainly functions to protect the first body 74 and the second body 84 from deterioration, so that the first body 74 and the second body 84 are more durable and have a certain waterproof function. The first cover layer 75 and the second cover layer 85 are made of a known material such as glass fiber and oxygen-proof resin. The first and second cover layers 75 and 85 are coated on the outer sides of the first and second bodies 74 and 84 by a known method, such as lamination, so that the first and second cover layers 75 and 85 are integrated with the first and second bodies 74 and 84.

The outer side of the stringers 6 may also be provided with a sealing layer which may be of the same material as the first 75 and second 85 cover layers so that the entire outer surface of the surfboard 100 is protected by the sealing layer.

The first body 74 and the second body 84 are made of closed cell foam, which is known as closed cell foam, such as polystyrene closed cell foam. Closed-cell foams have, in addition to their typical foam properties, a lower water absorption than open-cell foams. By using closed cell foam, the first body 74 and the second body 84 do not absorb a large amount of water even if the first cover layer 75 and the second cover layer 85 are broken.

The first and second holes 76, 86 are formed by known methods, such as by using a forming pin sized and shaped to fit the size and shape of the holes.

The first holes 76 include a plurality of first hole groups 761 uniformly distributed in the longitudinal direction, each of the first hole groups 761 includes a plurality of first holes 76 uniformly distributed in the lateral direction, the second holes 86 include a plurality of second hole groups 861 uniformly distributed in the longitudinal direction, and each of the second hole groups 861 includes a plurality of second holes 86 uniformly distributed in the lateral direction. In the preferred embodiment, the first aperture 76 and the second aperture 86 are bilaterally symmetric.

The first and second apertures 76, 86 are sized to allow air to pass between the cover and the body while allowing little or no water to pass. Since even closed-cell foams have a low water absorption, direct contact with water is preferably avoided as much as possible. By providing the first and second holes 76, 86, air bubbles formed between the cover and the body can be effectively removed. In this embodiment, the cross-sectional shape of the first and second apertures 76, 86 is circular, and in other embodiments, the cross-sectional shape of the first and second apertures 76, 86 may be any suitable shape, such as oval, rectangular, and the like.

Preferably, the first and second holes 76 and 86 are arranged in an inclined or curved manner, which makes it more difficult for water to enter the first and second bodies 74 and 84 through the first and second holes 76 and 86.

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 (10)

1. a surfboard, comprising:

The stringer is made of a wood material and is provided with an upper surface and a lower surface, the upper surface is downwards concavely provided with a plurality of upper grooves, and the lower surface is upwards concavely provided with a plurality of lower grooves;

The first plate is arranged on one side of the stringer and comprises a first body and a first covering layer covering the outer side of the first body, the first plate is provided with a first top surface and a first bottom surface, a plurality of first holes are formed in the first top surface and the first bottom surface, and the first holes penetrate through the first covering layer to enable the surface of the first body to be communicated with the outside;

The second plate is arranged on the other side of the stringer and comprises a second body and a second covering layer covering the outer side of the second body, the second plate is provided with a second top surface and a second bottom surface, a plurality of second holes are formed in the second top surface and the second bottom surface, and the second holes penetrate through the second covering layer to enable the surface of the second body to be communicated with the outside;

the first body and the second body are made of closed cell foam.

2. The surfboard of claim 1, wherein: the depths of the upper groove and the lower groove are matched with the thickness of the stringer.

3. The surfboard of claim 1, wherein: the upper grooves and the lower grooves are distributed in a staggered mode from top to bottom.

4. the surfboard of claim 1, wherein: the depth of each upper groove is not more than half the thickness of the stringer at that location, and the depth of each lower groove is not more than half the thickness of the stringer at that location.

5. The surfboard of claim 1, wherein: and the upper groove and the lower groove are filled with elastic materials.

6. The surfboard of claim 1, wherein: the upper groove and the lower groove are rectangular grooves.

7. The surfboard of claim 1, wherein: the stringer comprises a left side face and a right side face which are arranged at intervals, the first plate comprises a first side face, the second plate comprises a second side face, the first side face and the left side face are matched in shape to be attached to the first side face, and the second side face and the right side face are matched in shape to be attached to the second side face.

8. The surfboard of claim 1, wherein: the first holes include a plurality of first hole groups evenly distributed in a longitudinal direction, each of the first hole groups includes a plurality of first holes evenly distributed in a lateral direction, the second holes include a plurality of second hole groups evenly distributed in a longitudinal direction, each of the second hole groups includes a plurality of second holes evenly distributed in a lateral direction.

9. The surfboard of claim 1, wherein: the first plate and the second plate are symmetrical left and right, and the first hole and the second hole are symmetrical left and right.

10. The surfboard of claim 1, wherein: the first hole and the second hole are arranged in an inclined or curved manner.