Golf bag

Abstract

A golf bag 100 according to an aspect of the present disclosure includes a tubular bag body 10 for housing golf clubs 101 and a bottom assembly 20 attached to a lower end of the bag body 10. The bottom assembly 20 has a bottom face portion 30 that is convex in a manner that the height of the bottom face portion 30 increases as the bottom face portion 30 extends toward a central portion 31. The bottom face portion 30 has one or both of a curved portion 36 and a cusp portion 34. The curved portion 36 has a curved cross section. The cusp portion 34 has a cross section that changes from concave to convex.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Japanese Patent Application Nos. 2020-217823, 2020-217824 and 2020-217825, filed on December 25, 2020, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to a golf bag. Background Technology

[0004] Golf bags have a bottom component corresponding to the bottom. The bottom component needs to have a certain stiffness or higher. When the stiffness of the bottom component is high, deformation of the bottom component can be suppressed, and the golf bag can be prevented from tipping over. As a method to improve the stiffness of the bottom component, a method for forming a bottom component with multiple structures has been proposed (for example, see Japanese Patent Application Publication No. 2008-23242). Summary of the Invention

[0005] However, when forming bottom components with multiple structures, the manufacturing process becomes complex and the weight increases.

[0006] This disclosure is made under these circumstances, and the purpose of this disclosure is to provide a golf bag having a bottom assembly that is highly rigid, easy to manufacture, and lightweight.

[0007] According to one aspect of this disclosure, a golf bag includes: a tubular bag body and a bottom assembly; the bag body is used to accommodate golf clubs, the bottom assembly is attached to the lower end of the bag body, the bottom assembly has a bottom portion and an annular outer periphery, the bottom portion protrudes in height as it extends toward the center of the bottom portion, and the outer periphery is configured to surround the bottom portion and be integrally formed with the bottom portion.

[0008] According to this construction, the bottom surface protrudes in height as it extends towards the center. Therefore, for example, when a force is applied to the bottom surface from above, a compressive load (which causes almost no deformation compared to a tensile load) is applied. This increases the stiffness of the bottom assembly. Furthermore, the outer periphery is formed in a ring shape and is configured to surround the bottom surface. Therefore, deformation of the bottom surface (due to outward expansion from the force applied from above) can be suppressed by the outer periphery. This further increases the stiffness of the bottom assembly. Moreover, since the stiffness of the bottom assembly can be increased by the above construction, the bottom assembly does not need to have multiple structures. Therefore, the bottom assembly can be easily manufactured and its weight can be reduced. Attached Figure Description

[0009] Figure 1 This is a diagram of a golf bag.

[0010] Figure 2 This is a three-dimensional view of the bottom component of a golf bag when viewed from the top surface of the bottom component.

[0011] Figure 3 This is a three-dimensional view of the bottom component of a golf bag when viewed from the lower surface of the bottom component.

[0012] Figure 4 It is a longitudinal cross-sectional view showing the part of the bottom component without legs.

[0013] Figure 5 This is a longitudinal cross-sectional view showing the portion of the bottom component that has legs.

[0014] Figure 6 This is a perspective view of the bottom component of the modified example when viewed from the top surface side of the bottom component. Detailed Implementation

[0015] Golf bag overview

[0016] In the following text, a golf bag 100 according to one embodiment of the present disclosure will be described. First, an overview of the golf bag 100 will be given. Figure 1 This is a schematic diagram of a golf bag 100. The golf bag 100 includes a tubular bag body 10 and a bottom assembly 20; the bag body 10 is used to accommodate golf clubs 101, and the bottom assembly 20 is attached to the lower end of the bag body 10.

[0017] There are no particular limitations on the material of the bag body 10. For example, the bag body 10 can be formed by covering the resin core with a fabric cover. Furthermore, the bottom component 20 of this embodiment is made of resin. The bottom component 20 is attached to the lower end of the bag body 10 and thus fixed thereto. For example, the bottom component 20 can be fixed to the bag body 10 by bonding and sewing with an adhesive. When the rigidity of the bottom component 20 of the golf bag 100 is high, the bottom component 20 hardly deforms. Therefore, the golf bag 100 can be prevented from tipping over.

[0018] Details of the bottom component

[0019] Next, the details of the bottom component 20 will be described. Figure 2 This is a perspective view of the bottom component 20 when viewed from the upper surface side. Figure 3 This is a perspective view of the bottom component 20 as seen from one side of its lower surface. For example... Figure 2 and 3As shown, the bottom component 20 has a bottom portion 30 and an outer peripheral portion 40. These components will be described in turn below.

[0020] bottom surface

[0021] The bottom portion 30 is located at the center of the bottom assembly 20. In this embodiment, the bottom portion 30 protrudes in height as it extends from its outer periphery toward the center 31. Specifically, the bottom portion 30 is generally formed in a dome shape. Therefore, for example, when a force is applied to the bottom portion 30 from above, a compressive load (which causes almost no deformation compared to a tensile load) is applied to the bottom portion 30. Therefore, by making the bottom portion 30 protrude as described in this embodiment, the overall stiffness of the bottom assembly 20 can be improved.

[0022] The bottom surface 30 will be described in more detail. The bottom surface 30 has a central portion 31 and a protrusion 32.

[0023] In the plan view, the central portion 31 is the part that includes the center point of the bottom portion 30. In this embodiment, the central portion 31 is formed as a horizontal plane. However, the central portion 31 may be formed as a partially spherical shape.

[0024] The protrusion 32 is an annular portion arranged around the entire circumference of the central portion 31. The protrusion 32 is formed such that its height increases as it extends from its outer periphery toward the central portion 31. In this embodiment, the protrusion 32 is formed in a curved shape. Furthermore, the protrusion 32 includes downwardly protruding valleys 33. Each valley 33 extends linearly from the central portion 31 to its outer periphery.

[0025] The protrusion 32 may have an upwardly convex hillside replacing the valley 33; or, in addition to the valley 33, the protrusion 32 may also have an upwardly convex hillside. Inflection point portions 34 are formed around each valley 33 and each hillside, each inflection point portion 34 having a cross-section that changes from concave to convex. The inflection point portions 34 and their adjacent portions can serve as beams or columns in the bottom portion 30. Therefore, as described in this embodiment, the rigidity of the bottom assembly 20 can be increased by including the inflection point portions 34 in the bottom portion 30.

[0026] Furthermore, each valley 33 in the plan view is curved. Specifically, each valley 33 is curved such that the position of the valley 33 in the circumferential direction varies as the valley 33 extends towards the outer periphery of the bottom surface 30. Thus, by forming inflection points 34 over a large area of ​​the bottom surface 30, the rigidity of the bottom component 20 can be further increased. The valleys 33 appear on the lower surface of the bottom surface 30. For example, the valleys 33 are visible when transporting a golf bag 100. Therefore, from a design point of view, the curvature of the valleys 33 is preferred.

[0027] In addition, such as Figure 3As shown, a reinforcing portion (rib) 35 is formed on the lower surface of the bottom portion 30, and the thickness of the reinforcing portion (rib) 35 is greater than that of the adjacent portions. In this embodiment, one reinforcing portion 35 is formed in a ring shape along the outer periphery of the central portion 31, and other reinforcing portions 35 are formed in a linear shape extending from the central portion 31 to the outer periphery of the bottom portion 30. Three reinforcing portions 35 extending from the central portion 31 of the bottom portion 30 to the outer periphery are formed between adjacent valley portions 33. Furthermore, the reinforcing portions 35 extending from the central portion 31 of the bottom portion 30 to the outer periphery can suppress the deformation of the bottom portion 30 in the vertical direction. Therefore, the rigidity of the bottom assembly 20 can be further improved.

[0028] Furthermore, the reinforcing portion 35 is formed to protrude downward from the lower surface of the bottom portion 30. Therefore, the reinforcing portion 35 can be visually identified when the golf bag 100 is viewed from below. Therefore, from a design perspective, it is preferable to form the reinforcing portion 35 as described in this embodiment, which protrudes downward from the lower surface of the bottom portion 30. However, the reinforcing portion 35 may also be formed to protrude upward from the upper surface of the bottom portion 30. The shape of the reinforcing portion 35 is not limited to the shape described above. For example, the reinforcing portion 35 may be honeycomb-shaped.

[0029] There is no particular limitation on the protrusion height (height difference) h of the bottom surface 30, but it is preferably more than 10 mm and less than 30 mm (see Figure 4 By setting the protrusion height h of the bottom surface 30 to 10mm or more, high rigidity of the bottom component 20 can be ensured. Furthermore, by setting the protrusion height h of the bottom surface 30 to 30mm or less, the storage area of ​​the golf bag 100 can be prevented from becoming smaller.

[0030] Peripheral part

[0031] The outer peripheral portion 40 is configured to surround the bottom portion 30. In this embodiment, the outer peripheral portion 40 is annular and integrally formed with the bottom portion 30. As described above, in this embodiment, the bottom portion protrudes in height as it extends toward the center of the bottom portion.

[0032] The bottom portion 30 protrudes in height as it extends toward the central portion 31. Therefore, for example, when a force is applied to the bottom portion 30 from above, it deforms and expands outward. However, since the outer peripheral portion 40 (integrated with the bottom portion 30) is formed in a ring shape and surrounds the entire outer periphery of the bottom portion 30, deformation of the bottom portion 30 can be suppressed. As a result, the stiffness of the bottom assembly 20 can be further improved.

[0033] The outer periphery 40 will be described in more detail. For example... Figure 2 As shown, the outer peripheral portion 40 has a horizontal portion 41, an inclined portion 42, and a vertical wall portion 43.

[0034] The horizontal portion 41 is located outside the bottom portion 30 and is continuous with it. The horizontal portion 41 is formed in a ring shape and surrounds the bottom portion 30. The horizontal portion 41 is formed perpendicular to the vertical direction (i.e., horizontally). Therefore, the horizontal portion 41 is unlikely to deform under forces acting in the horizontal direction. Thus, the outer peripheral portion 40 including the horizontal portion 41 can effectively suppress deformation of the bottom portion 30 in the horizontal direction. However, the horizontal portion 41 can be omitted from the outer peripheral portion 40. The horizontal portion 41 can be inclined in such a way that its height decreases as it extends outward.

[0035] The inclined portion 42 is located outside the horizontal portion 41 and is continuous with the horizontal portion 41. The inclined portion 42 is formed in a ring shape and surrounds the horizontal portion 41. The inclined portion 42 is inclined in such a way that its height increases as it extends outward (as it extends away from the bottom portion 30). The inclination angle α of the inclined portion 42 is not particularly limited, but is preferably 30° or more and 60° or less (see [reference]). Figure 4 ).

[0036] In addition, legs 44 are formed at equal intervals along the circumferential direction on the inclined portion 42. Figure 4 This is a longitudinal cross-sectional view showing the portion of the bottom component 20 without the legs 44. Figure 5 This is a longitudinal cross-sectional view showing the portion of the bottom component 20 having legs 44. (See image) Figure 4 and 5 As shown, the leg 44 is recessed outwards, and the end of the leg 44 is located below the horizontal portion 41 and in contact with the ground (i.e., grounded). However, the end of the leg 44 may be at the same height as the horizontal portion 41. By forming the leg 44 on the inclined portion 42 as described in this embodiment, the rigidity of the portion corresponding to the leg 44 in both the vertical and horizontal directions is increased. In addition, since the leg 44 is formed from the outwardly recessed portion of the inclined portion 42, it is not necessary to manufacture and attach the leg 44 separately.

[0037] The upright wall portion 43 extends upward from and is continuous with the inclined portion 42. The upright wall portion 43 is formed in a ring shape and extends in the vertical direction. The upright wall portion 43 is fixed to the lower end of the package body 10. Since the outer peripheral portion 40 has the upright wall portion 43 extending in the vertical direction, the outer peripheral portion 40 hardly deforms in the vertical direction, for example, the torsional stiffness of the outer peripheral portion 40 about the horizontal axis can be improved.

[0038] like Figure 4 and 5As shown, apart from the reinforcing part 35, the thickness of the entire bottom assembly 20 in this embodiment is substantially constant and relatively thin. The bottom assembly 20 of this embodiment is formed with a thickness of 0.8 mm or more and 2.0 mm or less. Furthermore, since the bottom assembly 20 of this embodiment can ensure sufficient rigidity, the bottom assembly 20 does not need to have multiple structures. Therefore, the weight of the bottom assembly 20 of this embodiment can be reduced. The bottom assembly 20 of this embodiment is formed with a weight of 80 g or more and 150 g or less. In addition, since the bottom assembly 20 of this embodiment can be manufactured, for example, by simple injection molding, the bottom assembly 20 is easy to manufacture.

[0039] Variations

[0040] The aforementioned golf bag 100 has Figure 2 The bottom component 20 is shown. However, the golf bag 100 may have... Figure 6 The bottom component 20A is shown. Figure 6 This is a perspective view of the modified bottom component 20A as seen from the upper surface side. Except for the shape of the bottom part 30, the modified bottom component 20A is the same as the bottom component 20 described above.

[0041] In the modified bottom component 20A, the bottom portion 30 protrudes in height as it extends toward the central portion 31. However, the bottom portion 30 is stepped. Specifically, the bottom portion 30 is formed such that annular portions extending vertically and annular portions extending horizontally are alternately and continuously arranged from the central portion 31 outwards. Furthermore, the boundary between adjacent annular portions in the cross-sectional view is curved. Specifically, Figure 6 The bottom part 30 shown has a curved portion 36, each curved portion 36 having a curved cross section.

[0042] Similar to inflection point 34 (see Figure 2 The curved portion 36 and its adjacent parts can be used as beams or columns. Therefore, it can also improve... Figure 6 The bottom component 20A is shown to have sufficient rigidity. Furthermore, because the bottom component 20A ensures sufficient rigidity, it does not need to have a multi-layered structure. Therefore, the bottom component 20A can be easily manufactured and its weight can be reduced.

[0043] In the plan view, each of the aforementioned bottom components 20 and 20A is formed as a circle. However, the shapes of the bottom components 20 and 20A are not limited to this. For example, each of the bottom components 20 and 20A may have an elliptical or rectangular shape in the plan view.

[0044] also, Figure 6 The construction of the bottom component 20A shown can be partially applied to Figure 2The bottom component 20 is shown. Specifically, the bottom component 20 may simultaneously have an inflection point 34 and a bend 36. Furthermore, the bottom component 20 may be formed such that it does not have: a portion having an overall recessed cross-section; an inflection point 34; and a bend 36.

[0045] summary

[0046] A first aspect of this disclosure is a golf bag, comprising: a tubular bag body and a bottom assembly; the bag body is for accommodating golf clubs, the bottom assembly is attached to the lower end of the bag body, the bottom assembly having a bottom portion and an annular outer periphery, the bottom portion protruding in height as it extends toward the center of the bottom portion, the outer periphery being configured to surround the bottom portion and be integrally formed with the bottom portion.

[0047] According to this construction, the bottom surface protrudes in height as it extends towards the center. Therefore, for example, when a force is applied to the bottom surface from above, a compressive load (which causes almost no deformation compared to a tensile load) is applied. This increases the stiffness of the bottom assembly. Furthermore, the outer periphery is formed as a ring and is configured to surround the bottom surface. Therefore, deformation of the bottom surface (due to outward expansion from the force applied from above) can be suppressed by the outer periphery. This further increases the stiffness of the bottom assembly. Moreover, since the stiffness of the bottom assembly can be increased by the above construction, the bottom assembly does not need to have multiple structures. Therefore, the bottom assembly can be easily manufactured and its weight can be reduced.

[0048] The second aspect of this disclosure is a golf bag according to the first aspect of this disclosure, wherein the protrusion height of the bottom surface is more than 10 mm and less than 30 mm.

[0049] With this design, the bottom protrusion height is 10mm or more, ensuring high rigidity of the bottom component. Furthermore, the bottom protrusion height is less than 30mm, preventing a reduction in the storage area of ​​the golf bag.

[0050] The third aspect of this disclosure is a golf bag according to the first aspect of this disclosure, wherein the outer periphery has an annular horizontal portion perpendicular to the vertical direction.

[0051] Since the horizontal portion of the outer periphery is perpendicular to the vertical direction, it hardly deforms under forces acting in the horizontal direction. Therefore, according to the above structure, the deformation of the bottom surface extending outward can be further suppressed by the outer periphery.

[0052] The fourth aspect of this disclosure is a golf bag according to the first aspect of this disclosure, wherein the bottom portion has a reinforcement that is thicker than other portions of the bottom portion and extends linearly from the center of the bottom portion to the outer periphery of the bottom portion.

[0053] With this structure, the reinforcing section extends linearly from the center of the bottom surface towards its outer periphery. Therefore, the reinforcing section can suppress deformation of the bottom surface in the vertical direction. This further increases the stiffness of the bottom assembly.

[0054] The fifth aspect of this disclosure is a golf bag according to the fourth aspect of this disclosure, wherein the reinforcement protrudes downward from the lower surface of the bottom part.

[0055] With this construction, the reinforcement can be visually identified when the golf bag is viewed from below. Therefore, this structure increases the rigidity of the bottom component, and this design is preferred.

[0056] A sixth aspect of this disclosure is a golf bag, comprising: a tubular bag body and a bottom assembly; the bag body for accommodating golf clubs, the bottom assembly being attached to the lower end of the bag body, the bottom assembly having a bottom portion that protrudes in height as it extends toward the center of the bottom portion, the bottom portion having one or both of an inflection point and a curved portion, the inflection point having a cross-section that changes from concave to convex, and the curved portion having a curved cross-section.

[0057] According to this construction, the bottom surface protrudes in height as it extends towards its center. Therefore, for example, when a force is applied from above to the bottom surface, a compressive load (which causes almost no deformation compared to a tensile load) is applied. This increases the stiffness of the bottom assembly. Furthermore, the bottom surface has one or both of an inflection point and a curved portion, the inflection point having a cross-section that changes from concave to convex, and the curved portion having a bent cross-section. The inflection point and its adjacent portions can serve as beams or columns, and the curved portion and its adjacent portions can serve as beams or columns. This further enhances the stiffness of the bottom assembly. Moreover, since the stiffness of the bottom assembly can be increased through the above construction, the bottom assembly does not need to have multiple structures. Therefore, the bottom assembly can be easily manufactured and its weight can be reduced.

[0058] The seventh aspect of this disclosure is a golf bag according to the sixth aspect of this disclosure, wherein the protrusion height of the bottom surface is more than 10 mm and less than 30 mm.

[0059] With this design, the bottom protrusion height is 10mm or more, ensuring high rigidity of the bottom component. Furthermore, the bottom protrusion height is less than 30mm, preventing a reduction in the storage area of ​​the golf bag.

[0060] The eighth aspect of this disclosure is a golf bag according to the sixth aspect of this disclosure, wherein the bottom surface has a valley that extends from the center of the bottom surface to the outer periphery of the bottom surface and bulges downward.

[0061] With this structure, since a valley extending from the center of the bottom surface to its outer periphery is formed, the valley also forms an inflection point extending from the center to the outer periphery along the bottom surface. Therefore, deformation of the bottom surface in the vertical direction can be suppressed, and the rigidity of the bottom component can be further increased.

[0062] The ninth aspect of this disclosure is a golf bag according to the eighth aspect of this disclosure, wherein the valley in the plan view is curved.

[0063] Based on this construction, the valley in the plan view is curved. Therefore, the inflection point is formed over a large area of ​​the bottom surface in the circumferential direction. This further increases the rigidity of the bottom component.

[0064] The tenth aspect of this disclosure is a golf bag according to the sixth aspect of this disclosure, wherein the bottom surface is stepped.

[0065] Based on this structure, the bottom surface is formed in a stepped shape. Therefore, the bottom surface has curved portions at different positions in the vertical direction. Thus, the curved portions are formed over a large area of ​​the bottom surface, which can further increase the rigidity of the bottom component.

[0066] The eleventh aspect of this disclosure is a golf bag, comprising: a tubular bag body and a bottom assembly; the bag body for accommodating golf clubs, the bottom assembly being attached to the lower end of the bag body, the bottom assembly having a bottom portion and an annular outer periphery, the outer periphery being configured to surround the bottom portion and integrally formed with the bottom portion, the outer periphery including an annular inclined portion that is inclined in a manner that increases in height as the inclined portion extends away from the bottom portion, the inclined portion including outwardly recessed legs.

[0067] According to this structure, the inclined portion of the outer periphery has outwardly recessed legs. By forming an outwardly recessed portion in the inclined portion, the rigidity of the bottom assembly in both the vertical and horizontal directions at the outwardly recessed portion can be improved. Furthermore, since the rigidity of the bottom assembly can be increased, the bottom assembly does not need to have multiple structures. Therefore, the bottom assembly can be easily manufactured and its weight can be reduced. Additionally, since the legs are formed by the outwardly recessed portion, it is not necessary to manufacture and attach the legs separately. Therefore, the bottom assembly can be easily manufactured.

[0068] The twelfth aspect of this disclosure is a golf bag according to the eleventh aspect of this disclosure, wherein the legs are arranged at equal intervals along the circumferential direction.

[0069] With this construction, since the legs are formed at equal intervals along the circumference, the rigidity of the bottom component can be increased throughout the entire perimeter.

[0070] The thirteenth aspect of this disclosure is a golf bag according to the eleventh aspect of this disclosure, wherein the bottom surface protrudes in such a way that its height increases as it extends toward the center of the bottom surface.

[0071] According to this construction, the bottom surface protrudes in height as it extends towards the center. Therefore, for example, when a force is applied from above towards the bottom surface, a compressive load (which causes almost no deformation compared to a tensile load) is applied to the bottom surface. This increases the stiffness of the bottom assembly.

[0072] The fourteenth aspect of this disclosure is a golf bag according to the thirteenth aspect of this disclosure, wherein the protrusion height of the bottom surface is more than 10 mm and less than 30 mm.

[0073] With this design, the protrusion height of the bottom surface is 10mm or more, thus ensuring high rigidity of the bottom component. Furthermore, since the protrusion height of the bottom surface is less than 30mm, it prevents a reduction in the storage area of ​​the golf bag.

[0074] The fifteenth aspect of this disclosure is a golf bag according to the eleventh aspect of this disclosure, wherein the outer periphery has an annular vertical wall extending in the vertical direction.

[0075] According to this structure, the outer periphery has an annular vertical wall extending in the vertical direction. Therefore, the outer periphery hardly deforms in the vertical direction, which can, for example, improve the torsional stiffness of the outer periphery about the horizontal axis.

Claims

1. Golf bags, which include: The main body of the tubular bag that houses the golf clubs; and A bottom component, attached to the lower end of the bag body, has a bottom portion and an annular outer periphery. The bottom portion protrudes into a dome shape, increasing in height as it extends from the outer periphery towards the center of the bottom portion. The outer periphery is configured to surround the bottom portion and is integrally formed with it. The outer peripheral portion includes an inclined portion that increases in height as it extends away from the bottom surface. The central portion is horizontal or partially spherical, and the protrusion includes a downwardly protruding valley and an upwardly protruding mountain. An inflection point is formed around the valley and the mountain, and the inflection point has a cross-section that changes from concave to convex.

2. The golf bag according to claim 1, wherein, The protrusion height of the bottom surface is more than 10mm and less than 30mm.

3. The golf bag according to claim 1, wherein, The bottom surface has a reinforcing portion, the thickness of which is greater than that of other parts of the bottom surface, and extends linearly from the center of the bottom surface to the outer periphery of the bottom surface.

4. The golf bag according to claim 3, wherein, The reinforcing part protrudes downward from the lower surface of the bottom part.

5. Golf bags, which include: The main body of the tubular bag that houses the golf clubs; and A bottom component, attached to the lower end of the bag body, has a bottom portion and an annular outer periphery. The bottom portion protrudes in height as it extends from the outer periphery towards the center of the bottom portion. The outer periphery is configured to surround the bottom portion and be integrally formed with it. The outer peripheral portion includes an inclined portion that increases in height as it extends away from the bottom surface. The bottom surface is formed such that: annular portions extending in the vertical direction and annular portions extending in the horizontal direction are arranged alternately and continuously from the center to the outside, and the boundary between adjacent annular portions is curved.

6. The golf bag according to claim 1 or 5, wherein, The outer periphery has an annular horizontal portion perpendicular to the vertical direction.

7. The golf bag according to claim 6, wherein, The inclined portion is located outside the horizontal portion and is continuous with the horizontal portion.

8. The golf bag according to claim 7, wherein, The inclined portion includes outwardly recessed legs.

9. The golf bag according to claim 7, wherein, The outer periphery has a vertical wall portion that extends in the vertical direction and is continuous with the inclined portion.

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