Helmet adjuster

Abstract

The invention relates to the technical field of head protection tools, in particular to a helmet adjuster which comprises an installation frame connected with a helmet, adjusting wings which extend towards the left side and the right side and are attached to the radian of the head are formed on the installation frame, a base is formed between the adjusting wings on the two sides, and a rotating piece and a locking piece are arranged in the base. The rotating piece is connected with an adjusting rope which extends towards the two sides and is connected with the adjusting wing, and the adjusting rope is tightened or loosened by rotating the rotating piece; a rotary knob is installed on the base, the rotating piece, the locking piece and the rotary knob are coaxially arranged, the rotary knob can drive the locking piece to rotate, and ratchets in matched transmission are arranged on the sides, close to each other, of the rotating piece and the locking piece respectively. The locking piece is connected with the rotary knob in the axial direction, and the rotary knob can drive the locking piece to move in the axial direction. The helmet adjuster at least solves the technical problems that an existing helmet adjuster is tedious in operation and cannot be finely adjusted in two directions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head protection, in particular to a helmet adjuster. BACKGROUND

[0002] As important personal protective equipment, the stability and comfort of wearing a helmet are directly related to the safety and experience of the user. In order to adapt to the head size of different users, modern helmets generally have an adjusting mechanism inside. One common adjusting mechanism is a tightness adjuster arranged at the back of the helmet. The adjuster tightens or loosens the adjusting rope through a knob, and then drives the adjusting wings on both sides of the helmet to contract or expand, so as to realize the tightening and loosening of the head.

[0003] However, such existing adjusters have a significant defect: the knob is usually designed to rotate only in one direction. This one-way rotation design is due to the use of anti-reverse mechanisms inside, such as ratchet pawl structures or one-way bearings, which is to prevent the helmet from accidentally loosening. Although this design ensures safety, it sacrifices the convenience and accuracy of adjustment. When the user feels that the helmet is too tight and wants to loosen it a little, since the knob cannot be adjusted in the opposite direction, it can only be repeatedly unlocked until the appropriate tightness is adjusted. This process is not only cumbersome to operate, but also cannot achieve fine and linear tightness adjustment, which seriously affects the user experience. Especially in the scene that needs frequent fine adjustment, this shortcoming is particularly prominent.

[0004] Therefore, there is an urgent need in the art for a helmet tightness adjuster that can achieve fast locking and bidirectional fine adjustment while ensuring reliable locking, to solve the problems of inconvenient adjustment and cumbersome operation of the prior art. SUMMARY

[0005] The present application provides a helmet adjuster to at least solve the technical problems of cumbersome operation and inability to bidirectional fine adjustment of existing helmet adjusters.

[0006] In order to achieve the above-mentioned purpose, the present application provides a helmet adjuster, comprising a mounting frame connected with a helmet, the mounting frame is formed with adjusting wings extending to the left and right sides and fitting the curvature of the head, a base is formed between the adjusting wings on both sides, a rotating member and a locking member are arranged in the base, the rotating member is connected with adjusting ropes extending to both sides and connected with the adjusting wings, and the rotating member is rotated to tighten or loosen the adjusting ropes; a knob is installed on the base, the rotating member, the locking member and the knob are coaxially arranged, the knob can drive the locking member to rotate, and the rotating member and the locking member are respectively provided with ratchets on the side close to each other; the locking member is connected with the knob in the axial direction, and the knob can drive the locking member to move along the axial direction.

[0007] In some embodiments, the base bottom is fixedly provided with a base, the base is provided with a rotating shaft extending towards the knob, and the rotating member and the locking member are rotatably sleeved on the rotating shaft.

[0008] In some embodiments, the rotating member is internally provided with a coil spring, one end of the coil spring is connected with the rotating shaft, and the other end of the coil spring is connected with the rotating member, and the coil spring enables the rotating member to have a tendency to expand the adjusting rope.

[0009] In some embodiments, the locking member is provided with an outwardly protruding clamping portion, and the inner wall of the base is circumferentially provided with an internal tooth ring matched with the clamping portion.

[0010] In some embodiments, the clamping portion includes a first clamping portion circumferentially arranged on the locking member and extending in a clockwise direction, and a second clamping portion circumferentially arranged on the locking member and extending in an anticlockwise direction, and the clamping portion is formed at an end with a clamping end matched with the internal tooth ring.

[0011] In some embodiments, the clamping portion is elastically deformed and connected to the locking member, and the clamping end is provided with a clearance space for the clamping end to move.

[0012] In some embodiments, the clamping end is provided with a positioning column extending towards the knob, and the knob is provided with a positioning groove accommodating the positioning column.

[0013] In some embodiments, the positioning column has a moving space in the positioning groove, and the positioning groove can push the positioning column to disengage the clamping end from the internal tooth ring.

[0014] In some embodiments, the clamping portion is circumferentially arranged in at least two groups, each group of the clamping portion is provided with one first clamping portion and one second clamping portion, and the knob is provided with a positioning groove corresponding to the positioning column of each clamping portion.

[0015] In some embodiments, the knob is provided with a clamping portion extending downward, and the locking member is provided with a flange matched with the clamping portion for clamping, so that the locking member and the knob are fixed in the axial direction.

[0016] According to the above, the technical scheme of the present application has the following advantages over the prior art:

[0017] 1. Through the innovative transmission and locking structure design, the limitation of traditional one-way adjustment is broken, the user can loosen the helmet by rotating the knob in the positive direction, and can also fine-tune and tighten by rotating the knob in the reverse direction, the operation is intuitive and linear, and the tightness suitable for the individual head shape can be easily found, which greatly improves 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 assembly 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 in the base. The rotating member is connected to adjusting ropes extending to the left and right sides and connected to the adjusting wings. Rotating the rotating member tightens or loosens the adjusting ropes. A knob is mounted on the base. The rotating member, locking member, and knob are coaxially arranged. The knob can drive the locking member to rotate. The rotating member and 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 and the knob are axially connected. The knob can drive the locking member to move axially.

[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 for mutual transmission on their adjacent sides. The locking component and the knob are axially connected. The knob can drive the locking component to move axially.

2. A helmet adjuster according to claim 1, 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.

3. A helmet adjuster according to claim 2, 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.

4. A helmet adjuster according to claim 1, characterized in that: The locking member is provided with an outwardly protruding locking portion, and the inner wall of the base is provided with internal toothed rings that cooperate with the locking portion along the circumferential direction.

5. A helmet adjuster according to claim 4, 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.

6. A helmet adjuster according to claim 5, 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.

7. A helmet adjuster according to claim 6, 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.

8. A helmet adjuster according to claim 7, 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.

9. A helmet adjuster according to claim 8, 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.

10. A helmet adjuster according to any one of claims 1 to 9, 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.

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