Adjustable helmet hoop structure of helmet

Abstract

The utility model discloses an adjustable helmet hoop structure of a helmet. An adjusting device further comprises an adjusting dial wheel connected with an adjusting gear, a dial wheel end cover used for adjusting the installation work of the dial wheel and a fixing screw. The shifting wheel end cover is of a T-shaped structure and is composed of an end cover body and a connecting column. The end cover covers the adjusting dial wheel, the connecting column sequentially penetrates through the adjusting dial wheel and the adjusting gear and extends into the rear end face of the supporting frame, and a fixing nut is embedded in the connecting column. A fixing screw is installed from the rear end face of the supporting frame and is in threaded fit with a fixing nut, and installation work of the adjusting shifting wheel on the adjusting shell is achieved. The mounting work of the adjusting structure is realized by adopting the matching of the embedded fixing nut and the fixing screw; compared with a traditional self-tapping screw, the embedded fixing nut enables overall stress to be more uniform, the connecting column is prevented from being split due to stress during installation, the overall structural strength and stability of the helmet adjusting device are remarkably improved, the service life of the helmet adjusting device is prolonged, and safety of a user is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of helmet component technology and relates to an adjustable helmet headband structure. Background Technology

[0002] In existing helmet adjustment devices, self-tapping screws are commonly used to connect and fix components. This method is prone to damage during installation due to uneven stress, leading to splitting or other issues with the connecting posts, severely impacting the overall structural strength and safety of the helmet. Furthermore, the connection stability between the nut and the connecting component is insufficient; the nut is susceptible to rotation or displacement during use, causing the adjustment device to malfunction. To address these problems, the fixing structure of the helmet adjustment device needs to be improved. Utility Model Content

[0003] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0004] An adjustable helmet headband structure includes: a helmet headband, a support frame, and an adjustment device disposed on the helmet;

[0005] The adjustment device includes: an adjustment housing, which has a tubular structure, with slots at both ends communicating with the interior; and an adjustment gear installed at the center of the adjustment housing.

[0006] The two ends of the helmet headband are inserted into the adjustment shell, located at the upper and lower ends of the adjustment gear respectively, and are formed with adjustment racks that mesh with the adjustment gear;

[0007] The adjustment device also includes: an adjustment dial connected to the adjustment gear, and a dial end cap and fixing screws for installing the adjustment dial;

[0008] The dial end cap has a "T" shaped structure and consists of an end cap and a connecting post. The end cap covers the adjusting dial, and the connecting post passes through the adjusting dial and the adjusting gear in sequence and extends to the rear end face of the support frame. A fixing nut is embedded in the connecting post. The fixing screw is inserted from the rear end face of the support frame and engages with the fixing nut to realize the installation of the adjusting dial on the adjusting housing.

[0009] As a further embodiment of this invention, the fixing nut is made of copper.

[0010] As a further embodiment of this utility model: the fixing nut is installed in the connecting column by injection molding; and the surface of the fixing nut is formed with concave and convex limiting teeth.

[0011] The beneficial effects of this utility model are as follows: the installation of the adjustment structure is achieved by using an embedded fixing nut in conjunction with a fixing screw; compared with traditional self-tapping screws, the embedded fixing nut makes the overall force more even, avoids the connecting column from splitting under stress during installation, significantly improves the overall structural strength and stability of the helmet adjustment device, extends the product's service life, and ensures user safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the helmet headband in this utility model.

[0014] Figure 3 This is a schematic diagram of the adjusting gear in this utility model.

[0015] Figure 4 This is a schematic diagram of the adjusting dial in this utility model. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0017] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In the embodiments of 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] Please see Figures 1-4 In this embodiment of the present invention, an adjustable helmet headband structure includes: a helmet headband 1, a support frame 2, and an adjustment device disposed in a helmet A;

[0021] The adjustment device includes: an adjustment housing 32, which has a tubular structure, and slots communicating with the interior are provided at both ends of the adjustment housing 32; an adjustment gear 33 is installed at the center of the interior of the adjustment housing 32.

[0022] The two ends of the helmet headband 1 are inserted into the adjusting shell 32, located at the upper and lower ends of the adjusting gear 33 respectively, and are formed with adjusting racks 11 that mesh with the adjusting gear 33.

[0023] In use, the adjustment rack 11 is driven by the rotation of the adjustment gear 33, so that the helmet headband 1 moves with the adjustment gear 33. When tightening, the helmet headband 1 moves into the adjustment shell 32, so that the overall circumference is reduced, thereby achieving the effect of tightening the helmet headband 1. This allows the helmet headband 1 to be quickly tightened and fixed to the user's head, which can adapt to different users.

[0024] In order to realize the adjustment of the adjusting gear 33, the adjusting device also includes: an adjusting wheel 31 connected to the adjusting gear 33, and a wheel end cap 35 and a fixing screw 38 for installing the adjusting wheel 31.

[0025] The dial end cap 35 has a "T" shaped structure and is composed of an end cap 33 and a connecting post 34. The end cap 33 covers the adjusting dial 31. The connecting post 34 passes through the adjusting dial 31 and the adjusting gear 33 in sequence and extends to the rear end face of the support frame 2. A fixing nut 36 is embedded in the connecting post 34. The fixing screw 38 is inserted from the rear end face of the support frame 2 and threadedly engages with the fixing nut 36 to realize the installation of the adjusting dial 31 on the adjusting housing 32.

[0026] Compared to traditional self-tapping screws, the use of embedded fixing nuts 36 can make the overall force more even, avoid the connecting column 34 from splitting under stress during installation, and improve the overall structural strength and stability.

[0027] Furthermore, the fixing nut 36 is made of copper, which has a certain strength and good toughness, can withstand a certain amount of tension and impact, and is not easy to break. While ensuring the tightness of the connection, it can adapt to a certain degree of deformation and vibration.

[0028] Furthermore, the fixing nut 36 is installed in the connecting post 34 by injection molding; and the surface of the fixing nut 36 is formed with concave and convex limiting teeth 37; so that the nut and the connecting post 34 are tightly installed, effectively preventing the nut from rotating or shifting during use, and greatly improving the connection stability and reliability.

[0029] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A helmet adjustable headband structure, characterized by, include: Helmet headband, support frame, and adjustment device are mounted on the helmet; The adjustment device includes: an adjustment housing, which has a tubular structure, with slots at both ends communicating with the interior; and an adjustment gear installed at the center of the adjustment housing. The two ends of the helmet headband are inserted into the adjustment shell, located at the upper and lower ends of the adjustment gear respectively, and are formed with adjustment racks that mesh with the adjustment gear; The adjustment device also includes: an adjustment dial connected to the adjustment gear, and a dial end cap and fixing screws for installing the adjustment dial; The dial end cap has a "T" shaped structure and consists of an end cap and a connecting post. The end cap covers the adjusting dial, and the connecting post passes through the adjusting dial and the adjusting gear in sequence and extends to the rear end face of the support frame. A fixing nut is embedded in the connecting post. The fixing screw is inserted from the rear end face of the support frame and engages with the fixing nut to realize the installation of the adjusting dial on the adjusting housing.

2. A helmet adjustable headband structure according to claim 1, wherein The retaining nut is made of copper.

3. A helmet adjustable headband structure according to claim 1, wherein The fixing nut is installed in the connecting column by injection molding; and the surface of the fixing nut is formed with concave and convex limiting teeth.

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