Body protection gear
The body protector employs a thermoplastic cover and inner unit connected via fused parts for automated production, ensuring efficient assembly and effective shock absorption with cushion spaces and ventilation.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- TAIWAN SAKURAI MFG
- Filing Date
- 2026-04-01
- Publication Date
- 2026-05-29
AI Technical Summary
Existing sports shin guards face challenges in automated production due to bonding methods using sewing thread, adhesive tape, or rivets, which are not suitable for efficient manufacturing.
A body protector design featuring a cover unit and inner unit made of thermoplastic material, connected via fused connection parts, allowing for automated production and efficient assembly using ultrasonic welding.
Enables efficient production and provides excellent shock absorption with defined cushion spaces, while maintaining breathability and comfort through ventilation holes.
Smart Images

Figure 0003256067000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a sports aid, and more particularly to a body protector.
Background Art
[0002] Sports shin guards provide a protective / cushioning effect to the tibia, which has less muscle around it, and are particularly necessary in sports where the tibia is likely to be impacted during activities, such as baseball, ice hockey, or martial arts. As such a sports shin guard, for example, the one described in Patent Document 1 can be cited. As shown in FIG. 1, this conventional shin guard 1 described in Patent Document 1 is configured in a multilayer structure having a plastic protector 11, a resin layer 12, a mesh 13, a buffer member 14, and a lining 15 from the outside toward the inside. And as means for bonding these layers, for example, sewing thread, adhesive tape, or rivets are used.
[0003] On the other hand, bonding means using sewing thread, adhesive tape, or rivets has a problem that it is not suitable for automated production.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] In order to solve the above problems, an object of the present invention is to provide a body protector that can provide a sufficient protective effect and is suitable for automated production and can be efficiently produced.
Means for Solving the Problems
[0006] To achieve the above objective, the present invention provides a body protection device comprising a cover unit made of thermoplastic material and an inner unit made of thermoplastic material and fixedly coupled to the cover unit, The cover unit has an outer protector which is a curved plate-like body that extends along a predetermined imaginary line and surrounds the imaginary line, and has an inner surface facing the imaginary line and an outer surface not facing the imaginary line, and the outer protector has a plurality of first fused connection portions formed on the peripheral edge of the inner surface and at least one boundary block protruding from the inner surface, The present invention provides a body protective device in which the inner unit has an inner protector positioned between the inner surface of the outer protector and the imaginary line, and together with the inner surface and the at least one boundary block, the inner unit has an inner protector, and a plurality of second fused connections are formed on the peripheral edge of the inner protector, which fix the inner unit to the cover unit by fused connection to each of the first fused connections formed on the outer protector. [Effects of the Invention]
[0007] With the above configuration, the body protection device of this invention employs a structure in which a first fused connection part in the outer protector of the cover unit and a second fused connection part in the inner protector of the inner unit are fused together, making it suitable for automated production and enabling efficient production. Furthermore, by defining a cushion space between the outer protector and the inner protector, it can also provide an excellent shock absorption effect. Therefore, the objective of this invention can be reliably achieved. [Brief explanation of the drawing]
[0008] [Figure 1] This is an exploded perspective view showing the configuration of a conventional body protective device (shin guard) described in Patent Document 1. [Figure 2]This is an exploded perspective view showing an embodiment of the body protection device of the present invention. [Figure 3] This is a front view showing the state in which the cover unit and the inner unit of the body protective device of the present invention are connected. [Figure 4] This is a rear view showing the state in which the cover unit and the inner unit of the body protective device of the present invention are joined together. [Figure 5] This is a partial cross-sectional diagram illustrating the state in which the first molten connection portion of the cover unit and the second molten connection portion of the inner unit of the body protective device of the present invention are molten connected. [Figure 6] This is a partial cross-sectional diagram illustrating how a cushioning space is defined between the outer protector of the cover unit and the inner protector of the inner unit in the body protective device of the present invention. [Modes for carrying out the invention]
[0009] To more clearly explain the purpose, technical means, and advantages of the embodiments of the present invention, the technical means in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. It will be clear that the embodiments described are some, and not all, embodiments of the present invention. Typically, the components of the embodiments of the present invention depicted and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided below in the accompanying drawings does not constitute any limitation on the scope of protection of the present invention, but merely illustrates selected embodiments of the present invention.
[0010] Figure 2 shows an embodiment of the body protection device of the present invention. As shown in the figure, the body protection device of this embodiment comprises a cover unit 2 made of a thermoplastic material and an inner unit 3 made of a thermoplastic material to be flexible and fixedly bonded to the cover unit 2. Here, thermoplastic material refers to a material that softens and becomes plastic when it reaches a specific glass transition temperature or molding temperature, and solidifies and becomes rigid when it falls below the glass transition temperature or molding temperature. Although this embodiment exemplifies a device that provides protection to the shin or forearm, the present invention can of course be configured as a body protection device that provides protection to other parts of the human body. In other words, in the present invention, the cover unit 2 and the inner unit 3 do not need to be formed in the shapes shown in the figure.
[0011] As shown in Figures 2 to 4, the cover unit 2 has an outer protector 21 which is a curved plate-like body that extends along a predetermined imaginary line L and surrounds the imaginary line L, and has an inner surface 211 that faces the imaginary line L and an outer surface 212 that does not face the imaginary line L. The outer protector 21 has a plurality of first fused connection parts 22 formed on the peripheral edge of the inner surface 211, and at least one boundary block 23 that protrudes from the inner surface 211. In this embodiment, one upper and one lower boundary block 23 are formed on the inner surface 211 of the outer protector 21, thereby defining a recessed area 230 that is relatively recessed (compared to the protruding boundary block 23) between the two boundary blocks 23. Furthermore, since the body protection device of this embodiment provides protection to the shin or forearm, the radius of curvature of the first edge at one end, which corresponds to the shape of the shin or forearm of the human body and extends along a virtual line L corresponding to the extension direction of the shin or forearm, is formed to be greater than the radius of curvature of the second edge on the opposite side of the first edge.
[0012] Furthermore, the first molten connection portion 22 is formed to be thicker than the surrounding portion in order to molten and connect with the second molten connection portion 32 (described later), and a total of four of them are arranged on the outside of the four corners of the recessed area 230.
[0013] The inner unit 3 has an inner protector 31 positioned between the inner surface 211 of the outer protector 21 and the imaginary line L, and together with the inner surface 211 and at least one boundary block 23, it defines a cushion space S (see Figure 6). Four second molten connection portions 32 are formed on the peripheral portion of the inner protector 31, each corresponding to one of the four first molten connection portions 22 formed on the outer protector 21. The inner unit 3 is fixedly bonded to the cover unit 2 by the molten connection of each second molten connection portion 32 to its corresponding first molten connection portion 22.
[0014] The inner protector 31, like the cover unit 2, is formed as a roughly trapezoidal plate-like body, with one end extending along a virtual line L corresponding to the extension direction of the shin or forearm, and the width of that end being longer than the width of the other end on the opposite side.
[0015] Furthermore, the inner protector 31 is formed to have a main body portion 311 which is plate-shaped so that four ventilation holes 310 pass through it, and contact portions 312 which extend from the outer peripheral edge of the main body portion 311 and abut against the corresponding boundary blocks 23 of the cover unit 2.
[0016] When fixing and connecting the inner unit 3 and the cover unit 2, the abutting portion 312 on the inner unit 3 side is made to abut against the corresponding boundary block 23 on the cover unit 2 side, and the flexible inner protector 31 is brought close to the outer protector 21 by bending deformation, so that the inner unit 3 and the cover unit 2 are stably positioned. In this stable state, each second fusion connection part 32 is fusion-connected to the corresponding first fusion connection part 22 respectively, so that the inner unit 3 can be easily fixedly connected to the cover unit 2.
[0017] Each second fusion connection part 32 is arranged and formed at the peripheral part of the inner protector 31 corresponding to the position of each first fusion connection part 22 on the cover unit 2 side. By fusing and connecting one second fusion connection part 32 to one first fusion connection part 22 in this way, the fixed connection between the cover unit 2 and the inner unit 3 can be further stabilized. In particular, in this embodiment, as a means for performing the fusion connection between the first fusion connection part 22 and the second fusion connection part 32, for example, an ultrasonic vibration system is used to convert electric power into high-frequency mechanical vibration, and through the welding head, the first fusion connection part 22 and the second fusion connection part 32 are locally melted at a specific amplitude and welding pressure to realize a stable welded connection. Thus, the present invention can realize rapid assembly between structural parts without introducing additional processing parts, and the overall assembly process can be completed in a relatively simple and efficient way.
[0018] Furthermore, when using the welding head to fusion-connect each first fusion connection part 22 and the corresponding second fusion connection part 32, as shown in FIG. 5, by using a welding head that forms a concavo-convex structure in which the first fusion connection part 22 and the second fusion connection part 32 to be melted fit together with each other, the fusion connection between the first fusion connection part 22 and the second fusion connection part 32 can be made stronger.
[0019] In this completed embodiment, the inner surface 211 of the outer protector 21 and the inner protector 31 are spaced apart from each other, and as shown in FIG. 6, at a location corresponding to the recessed area 230 (see FIG. 2) between the outer protector 21 and the inner protector 31, a cushion space S is defined by the inner surface 211 of the outer protector 21, the two boundary blocks 23, and the inner protector 31.
[0020] Therefore, when wearing the body protector of this embodiment, an impact applied to, for example, the shin or forearm of the wearing location is deformed and absorbed in the cushion space S between the outer protector 21 of the cover unit 2 and the inner protector 31 of the inner unit 3. Thus, a good protective effect is obtained, and due to the formation of ventilation holes 310 in the inner protector 31, it has breathability and good wearing comfort.
[0021] In addition, when wearing the body protector of this embodiment, it is also possible to use, for example, a surface fastener or a wearing band, and it is possible to select and apply a surface fastener, a wearing band, or other wearing tools according to the wearing location.
[0022] Summarizing the above, the body protector of the present invention adopts a configuration in which the first fusion connection portion 22 of the outer protector 21 of the cover unit 2 and the second fusion connection portion 32 of the inner protector 31 of the inner unit 3 are fused to each other, enabling efficient production suitable for automated production. And by defining a cushion space S between the outer protector 21 on the outside and the inner protector 31 on the inside, it is also possible to provide an excellent impact absorption effect. Therefore, the object of the present invention can be surely achieved.
[0023] The above embodiments are illustrative in illustrating the principles and effects of the present invention and do not limit it. Those skilled in the art can make some modifications and alterations to the above embodiments, provided they do not deviate from the spirit and scope of the present invention. Therefore, all modifications and alterations made by those skilled in the art, provided they do not deviate from the spirit of the present invention, should also be considered to fall within the scope of protection of the present invention. [Explanation of symbols]
[0024] 2 Cover Units 21 Outer Protector 211 Inner surface 212 External surface 22 First molten joint 23 Boundary Blocks 230 Recessed Area 3 Inner Unit 31 Inner Protector 310 Ventilation holes 311 Main body 312 Contact part 32 Second molten joint L virtual line S Cushion Space
Claims
1. A body protective device comprising a cover unit made of thermoplastic material and an inner unit made of thermoplastic material fixedly bonded to the cover unit, The cover unit has an outer protector which is a curved plate-like body that extends along a predetermined imaginary line and surrounds the imaginary line, and has an inner surface facing the imaginary line and an outer surface not facing the imaginary line, and the outer protector has a plurality of first fused connection portions formed on the peripheral edge of the inner surface and at least one boundary block protruding from the inner surface, Body protection device, wherein the inner unit has an inner protector disposed between the inner surface of the outer protector and the imaginary line, and together with the inner surface and the at least one boundary block, defines a cushion space, and a plurality of second fused connection parts are formed on the peripheral edge of the inner protector, which fix the inner unit to the cover unit by fused connection to each of the first fused connection parts formed on the outer protector.
2. The body protection device according to claim 1, wherein the cover unit has a first edge at one end extending along the imaginary line and a second edge on the opposite side of the first edge, and the radius of curvature of the first edge is greater than the radius of curvature of the second edge.
3. The body protection device according to claim 2, wherein the inner unit is formed as a substantially trapezoidal plate-like body in which the width of one end is longer than the width of the other end on the opposite side of the one end.
4. The body protection device according to claim 1, wherein the inner protector of the inner unit has a plurality of ventilation holes formed to penetrate it.
5. The body protection device according to claim 1, wherein the inner protector of the inner unit is formed to have a main body portion formed in the shape of a plate and a contact portion that extends from the outer peripheral edge of the main body portion and abuts against the boundary block of the cover unit.
6. The body protection device according to any one of claims 1 to 5, wherein one of the second fused connection portions is located near each of the four corners of the periphery of the inner protector of the inner unit.