A harness-to-helmet assembly

Abstract

The utility model discloses a kind of assembly structure of harness and helmet, comprising: helmet body, the opening side side of helmet body is equipped with assembly gap, assembly gap extends into the side wall of helmet body;Harness body, one end of harness body is equipped with sleeve hole, and one end of harness body equipped with sleeve hole is stretched into the side wall of helmet body by assembly gap;Screw, one end of screw is threaded through the opening side side of helmet body and sleeve hole, and is threadedly connected with the side wall of helmet body, the other end of screw is abutted with the opening side outside of helmet body.In the utility model, the assembly structure uses screw as fastener by thread connection, only needs to rotate screw to complete the disassembly and installation of harness body.Operational difficulty of helmet body later maintenance is greatly reduced;Meanwhile, damage caused to helmet body by forcibly disassembling rivet is avoided, and the safety performance of helmet body after maintenance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of helmet technology, and in particular to an assembly structure for a strap and a helmet. Background Technology

[0002] In helmet structural design, the strap itself is the core component that ensures wearing stability and safety. Currently, the industry commonly uses rivets to fix the strap to the helmet. Specifically, rivets are inserted through pre-set mounting holes in the strap and into mounting positions on the side of the helmet. The mechanical restraint of the rivets ensures a stable connection between the strap and the helmet.

[0003] While this traditional fixing structure can meet the strength requirements for the connection of the strap body and is not prone to loosening or falling off during daily use, it has the following drawbacks in actual use and maintenance: Since the rivet is a threadless fastener composed of a shank and a nut, the connection is achieved through plastic deformation (one end of the shank is upset by external force to form a second nut, clamping the connected parts). It is a permanent connection that cannot be disassembled, making it extremely difficult to replace the strap body when repairing the helmet later. If the rivet is forcibly removed, it is very easy to cause irreversible structural damage to the installation area on the side of the helmet, which not only affects the appearance integrity of the helmet, but may also weaken the structural strength of the helmet body, thereby reducing the safety protection performance of the helmet.

[0004] Therefore, existing technologies still need to be improved and enhanced. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an assembly structure for the strap and helmet, which aims to solve the problem that the existing method of assembling the strap body with the helmet by using rivets makes it difficult to replace the strap body later. If the rivets are forcibly removed, the side structure of the helmet may be damaged, which will reduce the safety protection performance of the helmet.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows: In a first aspect, embodiments of the present invention provide an assembly structure for a strap and a helmet, comprising: The helmet body has an assembly gap on its open side, which extends into the side wall of the helmet body. The strap body has a sleeve hole at one end, and the end of the strap body with the sleeve hole extends into the side wall of the helmet body through the assembly gap; A screw, one end of which passes through the opening side edge of the helmet body and the sleeve hole, and is threaded to the side wall of the helmet body; the other end of the screw abuts against the outer side edge of the opening side of the helmet body.

[0007] As a further improved technical solution, the helmet body includes: Helmet shell; The inner liner is disposed on the inner side of the helmet shell and has the assembly gap between it and the helmet shell. The inner side of the opening side of the inner liner is provided with a guide post, which is located within the assembly gap and has one end pointing towards the inner side of the helmet shell. The strap body is sleeved on the guide post through the sleeve hole. The inner side of the opening side of the inner liner is provided with a through hole, which penetrates the guide post. One end of the screw passes through the through hole, penetrates the guide post, and is connected to the inner side of the helmet shell. The other end of the screw abuts against the outer side of the opening side of the inner liner.

[0008] As a further improved technical solution, the inner side of the helmet shell is provided with a screw post, one end of the screw post abuts against one end of the guide post and the end face is provided with a threaded hole, the strap body is sleeved on the screw post through the sleeve hole, the threaded hole communicates with the through hole, and one end of the screw passes through the guide post and is threadedly connected to the threaded hole.

[0009] As a further improved technical solution, the inner liner is provided with a groove on the side near the assembly gap, the groove being used to accommodate the screw hole post and the guide post.

[0010] As a further improved technical solution, the liner includes: The inner liner is disposed on the inner side of the helmet shell and forms the assembly gap between the inner liner and the helmet shell, and the groove is provided on the side of the inner liner near the assembly gap; A liner is disposed on the inner side of the inner liner, with the open side of the liner abutting against the open side of the inner liner. A through hole is disposed on the open side of the liner, and a guide post is disposed on the inner side of the open side of the liner.

[0011] As a further improvement, the through hole is provided with a threaded structure.

[0012] As a further improvement, the width of the assembly gap is consistent with the width of the strap body.

[0013] As a further improved technical solution, a boss is provided on the inner side of the helmet shell, the boss is located in the groove, and the other end of the screw hole post is connected to the boss.

[0014] As a further improved technical solution, the boss is integrally formed with the inner side of the helmet shell and the screw hole post.

[0015] As a further improved technical solution, the strap body is provided with multiple straps, and there are multiple symmetrically distributed assembly gaps between the helmet shell and the inner liner. The inner side of the helmet shell is provided with multiple symmetrically distributed screw holes, and each strap body extends into each of the assembly gaps and is connected to each of the screw holes in a one-to-one correspondence.

[0016] Compared with the prior art, the embodiments of this utility model have the following advantages: This utility model provides an assembly structure for a strap and a helmet, comprising: a helmet body, wherein an assembly gap is provided on the open side of the helmet body, the assembly gap extending into the side wall of the helmet body; a strap body, one end of the strap body having a sleeve hole, and the end of the strap body with the sleeve hole extending through the assembly gap into the side wall of the helmet body; and a screw, one end of the screw penetrating the open side of the helmet body and the sleeve hole, and being threadedly connected to the side wall of the helmet body, the other end of the screw abutting against the outer side of the open side of the helmet body. In this utility model, during assembly, the end of the strap body with the sleeve hole extends into the side wall of the helmet body through the assembly gap, and then one end of the screw pierces through the open side of the helmet body, extends into the assembly gap, penetrates the sleeve hole of the strap body, and is threadedly connected to the side wall of the helmet body, thereby detachably fixing the strap body to the helmet body. This structure uses a threaded screw as a fastener, and the strap body can be disassembled and installed simply by rotating the screw. When the strap body experiences wear or aging, it can be quickly replaced, significantly reducing the difficulty of subsequent helmet maintenance; at the same time, it avoids damage to the helmet body caused by forcibly removing rivets, ensuring the safety performance of the repaired helmet body. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of an assembly structure for a strap and a helmet provided by this utility model; Figure 2 This is a three-dimensional structural diagram of the helmet shell, inner liner, and strap body after assembly in this utility model. Figure 3 This is a three-dimensional structural diagram of the inner liner in this utility model; Figure 4 This is a three-dimensional structural diagram of the gasket in this utility model; Figure 5 This is a schematic diagram of the assembly structure of the helmet shell and the strap body in this utility model.

[0018] In the diagram: 1. Helmet shell; 101. Screw hole post; 102. Boss; 2. Liner; 201. Inner liner; 2011. Groove; 202. Pad; 2021. Through hole; 2022. Guide post; 3. Assembly gap; 4. Strap body; 5. Screw. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example: Please see Figures 1-5 The assembly structure of the strap and helmet includes: a helmet body, wherein an assembly gap 3 is provided on the open side of the helmet body, and the assembly gap 3 extends into the side wall of the helmet body; a strap body 4, wherein one end of the strap body 4 is provided with a sleeve hole, and the end of the strap body 4 with the sleeve hole extends into the side wall of the helmet body through the assembly gap 3; and a screw 5, wherein one end of the screw 5 passes through the open side of the helmet body and the sleeve hole, and is threadedly connected to the side wall of the helmet body, and the other end of the screw 5 abuts against the outer side of the open side of the helmet body.

[0021] like Figure 1 and Figure 2As shown, in this embodiment, the assembly structure of the strap and helmet includes a helmet body, a strap body 4, and a screw 5. The helmet body has an assembly gap 3 on its open side, extending from the open side into the inner sidewall of the helmet body, forming an assembly space within the sidewall for assembling the strap body 4 and the screw 5. One end of the strap has a sleeve hole (not shown), and the end of the strap body 4 with the sleeve hole extends into the sidewall of the helmet body through the assembly gap 3. One end of the screw 5 passes through the open side and the sleeve hole of the helmet body and is threadedly connected to the sidewall of the helmet body; the other end of the screw 5 abuts against the outer side of the open side of the helmet body. In this embodiment, during assembly, the end of the strap body 4 with the sleeve hole is inserted into the side wall of the helmet body through the assembly gap 3. Then, one end of the screw 5 pierces through the opening side of the helmet body, inserts into the assembly gap 3, passes through the sleeve hole of the strap body 4, and completes a threaded connection with the side wall of the helmet body, thereby detachably fixing the strap body 4 to the helmet body. This structure uses a threaded screw 5 as a fastener, and the strap body 4 can be disassembled and installed simply by rotating the screw 5. When the strap body 4 experiences wear or aging, it can be quickly replaced, greatly reducing the difficulty of later maintenance of the helmet body; at the same time, it avoids damage to the helmet body caused by forcibly removing rivets, ensuring the safety performance of the repaired helmet body.

[0022] Furthermore, the helmet body includes a helmet shell 1 and an inner liner 2. The inner liner 2 is disposed inside the helmet shell 1 and has an assembly gap 3 between it and the helmet shell 1. A guide post 2022 is provided on the inner side of the opening side of the inner liner 2. The guide post 2022 is located within the assembly gap 3 and one end points to the inner side of the helmet shell 1. The strap body 4 is sleeved on the guide post 2022 through the sleeve hole. A through hole 2021 is provided on the side of the opening side of the inner liner 2. The through hole 2021 penetrates the guide post 2022. One end of the screw 5 passes through the through hole 2021 through the guide post 2022 and is connected to the inner side of the helmet shell 1. The other end of the screw 5 abuts against the outer side of the opening side of the inner liner 2. Specifically, the other end of the guide post 2022 can also abut against the inner side of the helmet shell 1. The guide post 2022 is used to fix the strap before screwing in the screw 5, eliminating the need to align the screw 5 with the strap's hole and tighten it, thus reducing assembly time. This allows for quick and precise installation of the strap without repeated adjustments.

[0023] Furthermore, the inner side of the helmet shell 1 is provided with a threaded post 101. One end of the threaded post 101 abuts against one end of the guide post 2022 and has a threaded hole on its end face. The strap body 4 is fitted onto the threaded post 101 through the sleeve hole. The threaded hole communicates with the through hole 2021. One end of the screw 5 passes through the guide post 2022 and is threadedly connected to the threaded hole. Specifically, the threaded post 101 added to the inner side of the helmet shell 1 provides an independent and robust force-bearing carrier for the threaded connection. Compared to directly tapping the side wall of the helmet shell 1, the column structure of the threaded post 101 can concentrate the tightening force of the screw 5 and the tension of the strap, avoiding the problems of thread stripping and cracking caused by the limited thickness and brittle material of the side wall of the helmet shell 1. Meanwhile, the screw post 101 and the guide post 2022 end face are precisely abutted, forming a rigid force transmission path of screw 5, screw post 101, guide post 2022 and inner liner 2, so that the tension on the strap body 4 is evenly distributed to the entire helmet shell 1 through the screw post 101, further improving the tensile and impact resistance of the connection structure.

[0024] Meanwhile, the through hole 2021 is provided with a threaded structure, and the shank of the screw 5 is threadedly connected to both the through hole 2021 and the threaded hole, making the connection between the inner liner 2 and the helmet shell 1 more secure.

[0025] In this embodiment, the inner liner 2 has a groove 2011 on the side near the assembly gap 3. The groove 2011 is used to accommodate the screw post 101 and the guide post 2022. Specifically, the groove 2011 of the inner liner 2 is designed so that the connection part of the screw post 101 and the strap body 4 is completely hidden inside the inner liner 2, avoiding the abruptness caused by the helmet shell 1 and the corresponding area of ​​the screw post 101 protruding outward.

[0026] like Figure 3 and Figure 4As shown, the inner liner 2 further includes an inner liner 201 and a pad 202. The inner liner 201 is disposed on the inner side of the helmet shell 1 and forms the assembly gap 3 between it and the helmet shell 1. The inner liner 201 has a groove 2011 on the side near the assembly gap 3. The pad 202 is disposed on the inner side of the inner liner 201 and the opening side of the pad 202 abuts against the opening side of the inner liner 201, that is, the opening side of the pad 202 will not block the entrance of the assembly gap 3. The through hole 2021 is disposed on the opening side of the pad 202, and the guide post 2022 is disposed on the inner side of the opening side of the pad 202. Specifically, if a traditional integrated liner shows localized wear, the entire liner needs to be replaced. However, with the split design, damaged parts can be replaced selectively. Since the gasket 202 is in direct contact with the head and is prone to getting dirty and aging, it can be disassembled and cleaned or replaced separately without affecting the inner liner 201 and the connecting structure. If the groove 2011 of the inner liner 201 is accidentally damaged, only the inner liner 201 needs to be replaced, without replacing the gasket 202. This significantly reduces the later maintenance costs and extends the overall service life of the liner 2.

[0027] Furthermore, the width of the assembly gap 3 is consistent with the width of the strap body 4. Specifically, the strap body 4 fits tightly with the assembly gap 3, leaving no extra room for movement. This reduces the relative friction and impact between the strap body 4 and the helmet shell 1 and inner liner 201, preventing loosening and connection failure of the strap body 4's fixing parts due to friction after long-term use. Simultaneously, the fitted structure ensures a tighter fit between the strap body 4 and the screw post 101, improving the strap body 4's tensile strength and ensuring it does not detach under sudden pulling or impact scenarios.

[0028] like Figure 5 As shown, in this embodiment, a boss 102 is provided on the inner side of the helmet shell 1. The boss 102 is located within the groove 2011. The other end of the threaded post 101 is connected to the boss 102, and the boss 102 is integrally formed with the inner side of the helmet shell 1 and the threaded post 101. The boss 102 is connected to the other end of the threaded post 101. Compared to the design where the threaded post 101 is directly connected to the inner side of the helmet shell 1 at a single point, the boss 102 fits against the inner side of the helmet shell 1 with a larger end face, significantly increasing the contact area between the threaded post 101 and the helmet shell 1. When the strap body 4 is subjected to tension or the helmet is impacted, the boss 102 can evenly transfer the load to the helmet shell 1, avoiding stress concentration at the root of the threaded post 101, which could lead to breakage or deformation, and significantly improving the fatigue resistance and load-bearing capacity of the threaded post 101. The integrally formed boss 102 and screw hole post 101 are equivalent to forming a local reinforcement structure on the inside of the helmet shell 1, which can improve the structural rigidity of the corresponding area of ​​the helmet shell 1.

[0029] Furthermore, the strap body 4 has multiple straps, and there are multiple symmetrically distributed assembly gaps 3 between the helmet shell 1 and the inner liner 2. The inner side of the helmet shell 1 has multiple symmetrically distributed screw holes 101. Each strap body 4 extends into each of the assembly gaps 3 and is connected to each screw hole 101 in a one-to-one correspondence. Specifically, when the helmet is subjected to external impact, the symmetrically distributed strap body 4 connection points can evenly transfer the impact load to the helmet shell 1 and the inner liner 2. Through the coordinated constraint of multiple strap bodies 4, the head is prevented from shifting or hitting the inner wall of the helmet due to impact, further enhancing the helmet's impact resistance. Simultaneously, the symmetrical layout balances the force on the helmet, reducing the risk of the helmet tipping over or falling off due to unilateral force, providing comprehensive and balanced safety protection for the head.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] Of course, the above description of the embodiments of this utility model is quite detailed, but it should not be construed as a limitation on the scope of protection of this utility model. This utility model may have other implementation methods. Based on this implementation method, other implementation methods obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model. The scope of protection of this utility model is determined by the appended claims.

Claims

1. An assembly structure for a strap and a helmet, characterized in that, include: The helmet body has an assembly gap on its open side, which extends into the side wall of the helmet body. The strap body has a sleeve hole at one end, and the end of the strap body with the sleeve hole extends into the side wall of the helmet body through the assembly gap; A screw, one end of which passes through the opening side edge of the helmet body and the sleeve hole, and is threaded to the side wall of the helmet body; the other end of the screw abuts against the outer side edge of the opening side of the helmet body.

2. The assembly structure of the strap and helmet according to claim 1, characterized in that, The helmet body includes: Helmet shell; The inner liner is disposed on the inner side of the helmet shell and has the assembly gap between it and the helmet shell. The inner side of the opening side of the inner liner is provided with a guide post, which is located within the assembly gap and has one end pointing towards the inner side of the helmet shell. The strap body is sleeved on the guide post through the sleeve hole. The inner side of the opening side of the inner liner is provided with a through hole, which penetrates the guide post. One end of the screw passes through the through hole, penetrates the guide post, and is connected to the inner side of the helmet shell. The other end of the screw abuts against the outer side of the opening side of the inner liner.

3. The assembly structure of the strap and helmet according to claim 2, characterized in that, The inner side of the helmet shell is provided with a screw post, one end of which abuts against one end of the guide post and has a threaded hole on its end face. The strap body is sleeved on the screw post through the sleeve hole. The threaded hole communicates with the through hole. One end of the screw passes through the guide post and is threadedly connected to the threaded hole.

4. The assembly structure of the strap and helmet according to claim 3, characterized in that, The liner has a groove on the side near the assembly gap, the groove being used to accommodate the screw hole post and the guide post.

5. The assembly structure of the strap and helmet according to claim 4, characterized in that, The liner includes: The inner liner is disposed on the inner side of the helmet shell and forms the assembly gap between the inner liner and the helmet shell, and the groove is provided on the side of the inner liner near the assembly gap; A liner is disposed on the inner side of the inner liner, with the open side of the liner abutting against the open side of the inner liner. A through hole is disposed on the open side of the liner, and a guide post is disposed on the inner side of the open side of the liner.

6. The assembly structure of the strap and helmet according to claim 2, characterized in that, The through hole is provided with a threaded structure.

7. The assembly structure of the strap and helmet according to claim 1, characterized in that, The width of the assembly gap is the same as the width of the strap body.

8. The assembly structure of the strap and helmet according to claim 4, characterized in that, The helmet shell has a boss on its inner side, which is located in the groove, and the other end of the screw hole post is connected to the boss.

9. The assembly structure of the strap and helmet according to claim 8, characterized in that, The boss is integrally formed with the inner side of the helmet shell and the screw hole post.

10. The assembly structure of the strap and helmet according to claim 3, characterized in that, The strap body has multiple straps, and there are multiple symmetrically distributed assembly gaps between the helmet shell and the inner liner. The inner side of the helmet shell has multiple symmetrically distributed screw holes. Each strap body extends into each of the assembly gaps and is connected to each of the screw holes one by one.

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