A helmet adjuster

Abstract

The application relates to the technical field of head protection, in particular to a helmet adjuster which comprises a mounting frame connected with a helmet, the mounting frame is formed with adjusting wings extending to left and right sides and matched with the arc of the head, a base is formed between the two adjusting wings, a rotating part and a locking part are arranged in the base, the rotating part is connected with adjusting ropes extending to the left and right sides and connected with the adjusting wings, the adjusting ropes are tightened or loosened by rotating the rotating part; a knob is mounted on the base, the rotating part, the locking part and the knob are coaxially arranged, the knob can drive the locking part to rotate, the rotating part and the locking part are respectively provided with ratchet gears matched in transmission on the side close to each other; the locking part is provided with a protruding clamping part, and the inner wall of the base is circumferentially distributed with an inner tooth ring matched with the clamping part. The application at least solves the technical problems that the existing helmet adjuster is complicated to operate and cannot be bidirectionally finely adjusted.

Description

Technical Field

[0001] This application relates to the field of head protection technology, and in particular to a helmet adjuster. Background Technology

[0002] As an important piece of personal protective equipment, the stability and comfort of a helmet directly affect the user's safety and experience. To accommodate different head sizes, modern helmets generally have an internal adjustment mechanism. One common adjustment mechanism is a tension adjuster located at the rear of the helmet. This adjuster uses a knob to tighten or loosen the adjustment cord, which in turn causes the adjustment wings on both sides of the helmet to contract or expand, thus tightening or loosening the helmet's grip on the head.

[0003] However, existing adjusters of this type have a significant drawback: their knobs are typically designed to rotate only in one direction. This unidirectional rotation design stems from internal anti-reverse mechanisms, such as ratchet pawl structures or one-way bearings, designed to prevent the helmet from accidentally coming loose. While this design ensures safety, it sacrifices ease and precision in adjustment. When a user feels the helmet is too tight and wants to loosen it slightly, because the knob cannot be adjusted in the opposite direction, they must repeatedly unlock and unlock the knob until the desired tightness is achieved. This process is not only cumbersome but also fails to provide fine, linear adjustments, severely impacting the user experience. This shortcoming is particularly pronounced in scenarios requiring frequent adjustments.

[0004] Therefore, there is an urgent need in this field for a helmet tension adjuster that can achieve rapid locking and bidirectional fine-tuning while ensuring locking reliability, in order to solve the problems of inconvenient adjustment and cumbersome operation of existing technologies. Utility Model Content

[0005] This application provides a helmet adjuster to at least solve the technical problems of existing helmet adjusters being cumbersome to operate and unable to make bidirectional fine adjustments.

[0006] To achieve the above objectives, this application provides a helmet adjuster, including a mounting bracket connected to a helmet. The mounting bracket has adjusting wings extending to the left and right sides and conforming to the curvature of the head. A base is formed between the two adjusting wings. A rotating component and a locking component are disposed within the base. The rotating component is connected to an adjusting rope extending to the sides and connected to the adjusting wings. Rotating the rotating component tightens or loosens the adjusting rope. A knob is mounted on the base. The rotating component, the locking component, and the knob are coaxially arranged. The knob can drive the locking component to rotate. The rotating component and the locking component are respectively provided with ratchet teeth for cooperating transmission on their adjacent sides. The locking component has an outwardly protruding locking portion. The inner wall of the base has internal toothed rings distributed circumferentially to cooperate with the locking portion.

[0007] In some embodiments, the locking portion includes a first locking portion disposed circumferentially and extending in a clockwise direction on the locking member, and a second locking portion disposed circumferentially and extending in a counterclockwise direction on the locking member, wherein the end of the locking portion is formed with a locking end that engages with the internal toothed ring.

[0008] In some embodiments, the locking portion is elastically deformable and connected to the locking member, and a clearance space is provided between the locking end and the locking member for the locking end to move.

[0009] In some embodiments, the locking end is provided with a positioning post extending toward the knob, and the knob is provided with a positioning groove for receiving the positioning post.

[0010] In some embodiments, the positioning post has a movable space within the positioning groove, and the positioning groove can push the positioning post to disengage the locking end from the internal toothed ring.

[0011] In some embodiments, the locking portions are distributed in at least two groups along the circumference, each group of locking portions having a first locking portion and a second locking portion, and the knob having a positioning groove corresponding to the positioning post of each locking portion.

[0012] In some embodiments, the locking element is axially connected to the knob, and the knob can drive the locking element to move axially.

[0013] In some embodiments, the knob is provided with a downwardly extending snap-fit ​​portion, and the locking member is provided with a flange that engages with the snap-fit ​​portion, thereby fixing the locking member and the knob axially.

[0014] In some embodiments, a base is fixedly provided at the bottom of the base, and the base is provided with a rotating shaft extending toward the knob, and the rotating member and the locking member are rotatably sleeved on the rotating shaft.

[0015] In some embodiments, the rotating component is provided with a coil spring inside, one end of which is engaged with the rotating shaft and the other end of which is engaged with the rotating component. The coil spring causes the rotating component to have a tendency to unfold the adjusting rope.

[0016] Based on the above, the advantages of this application's technical solution compared to the prior art are:

[0017] 1. Through innovative transmission and locking structure design, the limitations of traditional one-way adjustment are broken. Users can loosen the helmet by turning the knob forward or tighten it by turning it backward. The operation is intuitive and linear, making it easy to find the tightness that best suits individual head shape, greatly improving the convenience and accuracy of adjustment.

[0018] 2. A coil spring is installed inside the base to drive the rotating component to rotate. The coil spring causes the rotating component to tend to release the tension of the adjusting rope. When the user pulls the knob to release the lock on the rotating component, the rotating component resets and releases the tension of the adjusting rope, so that the adjusting wing clamps the user's head. The operation is simple and quick. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure and fit of an embodiment of this application;

[0021] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the knob structure according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the locking element and the base mating in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the internal structure of an embodiment of this application;

[0025] Figure 6 This is an exploded view of the internal structure of an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: Adjusting wing 1.1; Base 1.2; Adjusting rope 1.3; Internal toothed ring 1.4; Base 2; Rotating shaft 2.1; Limiting part 2.2; Rotating part 3; Coil spring 3.1; Locking part 4; First locking part 4.1; Second locking part 4.2; Locking end 4.3; Positioning pin 4.4; Knob 5; Snap-fit ​​part 5.1; Positioning groove 5.2; Ratchet 6. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application. Furthermore, it is understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, modifications to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0028] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0029] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” used in this application means two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. The terms “first,” “second,” “third,” etc., used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0030] This application provides a helmet adjuster, including a mounting bracket connected to a helmet. The mounting bracket has adjusting wings extending to the left and right sides and conforming to the curvature of the head. A base is formed between the two adjusting wings. A rotating member and a locking member are disposed within the base. The rotating member is connected to an adjusting rope extending to the left and right sides and connected to the adjusting wings. Rotating the rotating member tightens or loosens the adjusting rope. A knob is mounted on the base. The rotating member, the locking member, and the knob are coaxially arranged. The knob can drive the locking member to rotate. The rotating member and the locking member are respectively provided with ratchet teeth that cooperate for transmission on their respective sides that are close to each other. The locking member is provided with an outwardly protruding locking part. The inner wall of the base is provided with internal toothed rings that cooperate with the locking part along the circumferential direction.

[0031] Implementation, for example Figures 1-6 As shown, a helmet adjuster includes a mounting bracket connected to a helmet. The mounting bracket has adjusting wings 1.1 extending to the left and right sides and conforming to the curvature of the head. A base 1.2 is formed between the two adjusting wings 1.1. A base 2 is fixedly mounted at the bottom of the base 1.2. A rotating component 3 and a locking component 4 are disposed inside the base 1.2. A knob 5 is disposed at the top of the base 1.2. The components, from top to bottom, are knob 5, locking component 4, rotating component 3, and base 2, and all components are coaxially arranged. The base 2 has a rotating shaft 2.1 extending toward the knob 5. A rotating component 3 and a locking component 4 are rotatably mounted on the rotating shaft 2.1. The knob 5 has a downwardly extending latching portion 5.1, and the locking component 4 has a flange that engages with the latching portion 5.1. The latching portion 5.1 and the flange engage to fix the locking component 4 and the knob 5 axially. The knob 5 can drive the locking component 4 to move axially. A limiting portion 2.2 is provided at the end of the rotating shaft 2.1 to restrict the axial movement range of the locking component 4. The rotating component 3 is connected to an adjusting rope 1.3 extending to both sides and connected to the adjusting wing 1.1. A coil spring 3.1 is provided inside the rotating component 3. One end of the coil spring 3.1 engages with the rotating shaft 2.1, and the other end engages with the rotating component 3. The coil spring 3.1 can drive the rotating component 3 to rotate, thus tending to release the tightening of the adjusting rope 1.3. The forward or reverse rotation of the rotating component 3 can tighten or loosen the adjusting rope 1.3. The length of the adjusting rope 1.3 wrapped around the rotating component 3 can be controlled by the forward or reverse rotation of the rotating component 3, thereby adjusting the tightness of the adjusting wing 1.1 on the head.

[0032] Furthermore, the locking member 4 is provided with an outwardly protruding locking portion, which includes a first locking portion 4.1 provided circumferentially and extending clockwise in the locking member 4 and a second locking portion 4.2 provided circumferentially and extending counterclockwise in the locking member 4. The locking portion has a locking end 4.3 at its end. The inner wall of the base 1.2 is provided with an internal toothed ring 1.4 distributed circumferentially, and the locking end 4.3 engages with the internal toothed ring 1.4. The locking portion is elastically deformable and connected to the locking member 4. A clearance space is provided between the locking end 4.3 and the locking member 4 for the locking end 4.3 to disengage from the internal toothed ring 1.4. When the locking member 4 rotates clockwise, the first locking portion 4.1 abuts and locks against the internal toothed ring 1.4; when the locking member 4 rotates counterclockwise, the second locking portion 4.2 abuts and locks against the internal toothed ring 1.4.

[0033] Furthermore, the locking end 4.3 is provided with a positioning post 4.4 extending toward the knob 5, and the knob 5 is provided with a positioning groove 5.2 for accommodating the positioning post 4.4. The positioning post 4.4 has room to move within the positioning groove 5.2. When the knob 5 is rotated clockwise, the positioning groove 5.2 pushes the positioning post 4.4 of the first locking part 4.1, causing the locking end 4.3 of the first locking part 4.1 to disengage from the internal gear ring 1.4, and then the knob 5 can drive the locking member 4 to rotate clockwise; when the knob 5 is rotated counterclockwise, the positioning groove 5.2 pushes the positioning post 4.4 of the second locking part 4.2, causing the locking end 4.3 of the second locking part 4.2 to disengage from the internal gear ring 1.4, and then the knob 5 can drive the locking member 4 to rotate counterclockwise. This design enables the locking member 4 to self-lock. The locking member 4 can only rotate when the knob 5 is rotated, and the locking member 4 cannot drive the knob 5 to rotate in the opposite direction when it is under its own force.

[0034] Specifically, there are at least two sets of locking parts distributed circumferentially (two sets in this embodiment). Each set of locking parts is provided with a first locking part 4.1 and a second locking part 4.2. The knob 5 is provided with a positioning groove 5.2 corresponding to the positioning post 4.4 of each locking part. This design can ensure the balance of forces during rotation.

[0035] Furthermore, the rotating component 3 and the locking component 4 are respectively provided with ratchet teeth 6 on their adjacent sides for transmission. The locking component 4 can drive the rotating component 3 to rotate against the elastic tendency of the coil spring 3.1 through the ratchet teeth 6. For example, if the elastic tendency of the coil spring 3.1 is to make the rotating component 3 rotate counterclockwise, the ratchet teeth 6 are designed to lock each other when rotating clockwise, so that the locking component 4 can drive the rotating component 3 to rotate when rotating clockwise; when the locking component 4 rotates counterclockwise, the rotating component 3 will also rotate counterclockwise with the locking component 4 due to the elastic force of the coil spring 3.1, thus realizing the function of fine adjustment of the regulator by rotating in both directions. When knob 5 is pulled upward, the engagement of locking part 5.1 with flange will cause locking part 4 to move upward together. At this time, ratchet 6 between rotating part 3 and locking part 4 disengages, and rotating part 3 quickly returns to its original position under the action of coil spring 3.1. At the same time, as rotating part 3 returns to its original position, it releases the tightening tendency of adjusting rope 1.3, so that adjusting rope 1.3 is no longer wrapped around rotating part 3, thereby releasing the pull of adjusting rope 1.3 on adjusting wing 1.1, so that adjusting wing 1.1 is tightly wrapped around the user's head.

[0036] Those skilled in the art should understand that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A helmet adjuster, characterized in that: The device includes a mounting bracket for connection to a helmet. The mounting bracket has adjustable wings extending to the left and right sides and conforming to the curvature of the head. A base is formed between the two adjustable wings. A rotating component and a locking component are disposed within the base. The rotating component is connected to an adjusting rope extending to the left and right sides and connected to the adjusting wings. Rotating the rotating component tightens or loosens the adjusting rope. A knob is mounted on the base. The rotating component, the locking component, and the knob are coaxially arranged. The knob can drive the locking component to rotate. The rotating component and the locking component are respectively provided with ratchet teeth that cooperate for transmission on their respective sides that are close to each other. The locking component has an outwardly protruding locking portion. The inner wall of the base has internal toothed rings distributed circumferentially to cooperate with the locking portion.

2. A helmet adjuster according to claim 1, characterized in that: The locking portion includes a first locking portion disposed around the locking member and extending in a clockwise direction, and a second locking portion disposed around the locking member and extending in a counterclockwise direction. The end of the locking portion is formed with a locking end that engages with the internal toothed ring.

3. A helmet adjuster according to claim 2, characterized in that: The locking part is elastically deformable and connected to the locking member, and a clearance space is provided between the locking end and the locking member to allow the locking end to move.

4. A helmet adjuster according to claim 3, characterized in that: The locking end is provided with a positioning post extending toward the knob, and the knob is provided with a positioning groove for accommodating the positioning post.

5. A helmet adjuster according to claim 4, characterized in that: The positioning post has room to move within the positioning groove, and the positioning groove can push the positioning post to disengage the locking end from the internal toothed ring.

6. A helmet adjuster according to claim 5, characterized in that: The locking parts are distributed in at least two groups along the circumference. Each group of locking parts is provided with a first locking part and a second locking part. The knob is provided with a positioning groove corresponding to the positioning post of each locking part.

7. A helmet adjuster according to claim 1, characterized in that: The locking element is axially connected to the knob, and the knob can drive the locking element to move axially.

8. A helmet adjuster according to claim 7, characterized in that: The knob is provided with a downwardly extending snap-fit ​​portion, and the locking member is provided with a flange that engages with the snap-fit ​​portion, thereby fixing the locking member and the knob in the axial direction.

9. A helmet adjuster according to any one of claims 1 to 7, characterized in that: A base is fixedly provided at the bottom of the base, and the base is provided with a rotating shaft extending toward the knob. The rotating component and the locking component are rotatably sleeved on the rotating shaft.

10. A helmet adjuster according to claim 9, characterized in that: The rotating component is equipped with a coil spring inside. One end of the coil spring is engaged with the rotating shaft, and the other end is engaged with the rotating component. The coil spring causes the rotating component to have a tendency to release the tightening of the adjusting rope.

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