Helmet head circumference adjusting structure

Abstract

The utility model relates to a helmet head circumference adjusting structure which is characterized in that the helmet head circumference adjusting structure comprises an adjusting head band, two groups of short bands, a fixing part and an adjuster assembly, the two groups of short bands are detachably connected with the adjuster assembly, and the adjuster assembly is used for adjusting the exposed length of the short bands; the adjusting head band comprises a transverse band and two sets of downward extending parts, assembling holes are formed in the outer sides of the downward extending parts and the short band, the fixing parts are assembled in the assembling holes, the short band is connected to the downward extending parts through the fixing parts, the short band can rotate with the fixing parts as the center, and therefore the height positions of the adjuster assembly and the short band are adjusted. According to the helmet head circumference adjusting structure, the characteristic that the short belt can rotate with the fixing component as the center is utilized, the short belt is rotationally adjusted, the height position of the adjuster assembly is changed, and the adjuster assembly can adapt to wearers with different neck lengths.

Description

Technical Field

[0001] The utility model relates to the technical field of helmet components, in particular to a helmet head circumference adjustment structure. Background Art

[0002] As a safety protection product for cycling, a helmet is required to fit the rider's head circumference well when worn. Therefore, many helmets are equipped with a head circumference adjustment device to adjust the head circumference size so that the helmet can well meet the needs of riders with different head circumference sizes.

[0003] However, in the prior art, for example, the Chinese utility model patent with authorization publication number CN209788615U, whose subject is a head circumference adjustment device and a helmet, includes structures such as a head ring, a front cover, a rear cover, a knob and a rack adjustment device. The head ring is used to be put on the wearer's head. After the front cover and the rear cover are assembled, the tightness of the head ring when worn is adjusted by rotating the knob and using the adjustment device.

[0004] In the above-mentioned prior art, the structure assembled by the front cover, the rear cover, the knob and the rack adjustment device is usually located at the back of the neck below the back of the head. However, due to the different neck lengths of cyclists, the joint positions of the neck movement are different, and the head circumference adjustment device can only be used to adjust the size on the circumference. The structure assembled by the front cover, the rear cover, the knob and the rack adjustment device cannot be adapted to cyclists with different neck lengths. Therefore, a helmet head circumference adjustment structure is proposed. Utility Model Content

[0005] Based on the above description, the utility model provides a helmet head circumference adjustment structure, which solves the technical problems pointed out in the above background technology.

[0006] The utility model solves the above technical problems with the following technical solutions: A helmet head circumference adjustment structure, characterized in that it comprises an adjustment headband, two sets of short straps, a fixing component and an adjuster assembly, wherein the two sets of short straps are detachably connected to the adjuster assembly, and the adjuster assembly is used to adjust the exposed length of the short straps;

[0007] The adjustable headband includes a horizontal strap and two sets of lower extensions, wherein the outer sides of the lower extensions and the short straps are provided with assembly holes, and the fixing components are assembled in the assembly holes. The fixing components connect the short straps to the lower extensions, and allow the short straps to rotate around the fixing components, thereby adjusting the height positions of the adjuster components and the short straps to suit people with different neck lengths.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the short strap is composed of a transverse portion and a vertical portion, a cavity is opened in the middle of the transverse portion, meshing teeth are arranged in the cavity, and the adjuster assembly adjusts the exposed length of the short strap through the meshing teeth.

[0010] Furthermore, the regulator assembly includes a regulator bottom cover, a regulator surface cover and an adjusting component, wherein the regulator bottom cover is detachably connected to the regulator surface cover, the short strap is movably arranged between the regulator bottom cover and the regulator surface cover, and the adjusting component adjusts the exposed length of the short strap through meshing teeth.

[0011] Furthermore, a through hole is provided on the outer side of the regulator cover, and the regulating component partially passes through the through hole and can be rotatably arranged on one side of the regulator bottom cover.

[0012] Furthermore, the adjusting component includes a gear and a knob. The gear is detachably connected to one side of the knob and is rotatably connected to the bottom cover of the regulator. When the knob is rotated, the gear can drive the short belt to move.

[0013] Furthermore, the fixing component is a rivet, which connects the short strap to the adjustable headband and allows the short strap to rotate around the rivet.

[0014] Furthermore, it also includes a drawstring, which is assembled on the adjustable headband through a connecting component and is used to surround the head of the wearer.

[0015] Furthermore, at least four groups of waist holes are opened on the outer side of the adjustable headband, and the connecting parts are partially arranged at the waist holes;

[0016] The connecting component comprises a hanger, a sliding column and a blocking piece, wherein the sliding column is slidably arranged in the waist hole, the blocking piece and the hanger are distributed on both sides of the adjustable headband, and the drawstring is sleeved on the hanger.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0018] The helmet head circumference adjustment structure utilizes the characteristic that the short strap can rotate around a fixed component to perform rotational adjustment on the short strap, thereby changing the height position of the adjuster component, so that the adjuster component can adapt to wearers with different neck lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a helmet head circumference adjustment structure provided by an embodiment of the utility model;

[0020] Figure 2 It is a top view schematic diagram of the embodiment of the utility model when the adjustment headband and the short strap are connected through the fixing component;

[0021] Figure 3 It is a structural schematic diagram of the connecting components and their connecting structure in an embodiment of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Adjusting headband; 11. Horizontal strap; 12. Lower extension; 2. Short strap; 3. Fixing part; 4. Adjuster assembly; 41. Adjuster bottom cover; 42. Adjuster surface cover; 43. Gear; 44. Knob; 5. Assembly hole; 6. Pull strap; 7. Connecting part; 71. Hanging piece; 72. Sliding column; 73. Baffle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1 As shown, a helmet head circumference adjustment structure in this embodiment includes an adjusting headband 1, two sets of short straps 2, a fixing component 3 and an adjuster assembly 4, wherein the two sets of short straps 2 are respectively arranged at the first positions of the adjusting headband 1, and are connected with the adjusting headband 1 through the fixing component 3, and the two sets of short straps 2 are detachably connected to the adjuster assembly 4, and the adjuster assembly 4 is used to adjust the exposed length of the short straps 2.

[0026] To further explain, the adjustable headband 1 includes a horizontal strap 11 and two sets of lower extensions 12, wherein the lower extensions 12 are used to lengthen the overall height of the adjustable headband 1 so that the adjuster assembly 4 can better adapt to riders with different neck lengths, and the outer sides of the lower extensions 12 and the short strap 2 are provided with assembly holes 5, which provide an installation position for the fixing component 3 through the assembly holes 5, so that the fixing component 3 can be assembled in the assembly holes 5, and the fixing component 3 can connect the short strap 2 to the lower extension 12. In addition, while the fixing component 3 is connected, the short strap 2 can rotate around the fixing component 3 as the center, thereby adjusting the height position of the adjuster assembly 4 and the short strap 2 to suit people with different neck lengths.

[0027] It should be noted that if Figure 2 As shown, the fixing component 3 is, for example, a rivet, and the rivet has the same axis as the assembly hole 5. The rivet has two end caps and an axis, and the axis connects the two end caps. The maximum diameter of the end cap is larger than the diameter of the assembly hole 5, so that the rivet can connect the short strap 2 with the adjustable headband 1, and the length of the axis is larger than the sum of the thickness of the short strap 2 and the adjustable headband 1, so that the short strap 2 can rotate around the rivet.

[0028] During use, when wearing the helmet head circumference adjustment structure, first, the short strap 2 is rotated and adjusted by utilizing the characteristic that it can rotate around the fixed component 3, thereby changing the height position of the adjuster component 4. When the adjuster component 4 is located at the active joint of the wearer's back neck, the length of the short strap 2 is adjusted through the adjuster component 4 to adjust the tightness so that the adjuster component 4 can stick to the active joint of the wearer's back neck.

[0029] like Figure 1 and Figure 3 As shown, in a certain embodiment, the helmet head circumference adjustment structure also includes a drawstring 6, which has four side straps. The drawstring 6 is assembled on the adjustment headband 1 through a connecting component 7 and is used to surround the head of the wearer.

[0030] Specifically, at least four groups of waist holes are opened on the outer side of the adjusting headband 1, and the connecting component 7 is partially set at the waist hole. The connecting component 7 includes a hanger 71, a slide column 72 and a baffle 73, wherein the slide column 72 is slidably set in the waist hole, the baffle 73 and the hanger 71 are distributed on both sides of the adjusting headband 1, and the drawstring 6 is sleeved on the hanger 71.

[0031] First, when not worn, the slide post 72 is located, for example, in the middle of the waist hole. When the drawstring 6 is worn on the head, the sliding relationship between the waist hole and the slide post 72 provides space support, which is better adapted to people with different head sizes.

[0032] In addition, the structural composition and the relationship between the regulator assembly 4 and the short strap 2 are described here. Figure 1 As shown, first, the short strap 2 is composed of a transverse portion and a vertical portion, a cavity is opened in the middle of the transverse portion, and meshing teeth are arranged in the cavity, and the adjuster assembly 4 adjusts the exposed length of the short strap 2 through the meshing teeth, and secondly, the adjuster assembly 4 includes an adjuster bottom cover 41, an adjuster surface cover 42 and an adjusting component, wherein the adjuster bottom cover 41 and the adjuster surface cover 42 are detachably connected, for example, the two can be snap-fitted and then fixed together with bolts, and the adjuster bottom cover 41 and the adjuster surface cover 42 have a accommodating space after being combined, and the accommodating space provides spatial support for the short strap 2, and the short strap 2 is movably arranged between the adjuster bottom cover 41 and the adjuster surface cover 42, specifically located in the accommodating space, and the adjusting component adjusts the exposed length of the short strap 2 through the meshing teeth.

[0033] To further explain, a through hole is provided on the outer side of the regulator cover 42, and the adjusting component partially passes through the through hole and is rotatably arranged on one side of the regulator bottom cover 41. The adjusting component includes a gear 43 and a knob 44. The gear 43 is detachably connected to one side of the knob 44. For example, a card hole is provided on one side of the gear 43, and a card block is fixed on one side of the knob 44, and the card block is adapted to the card hole. In addition, the gear 43 is rotatably connected to the regulator bottom cover 41, and the gear 43 is engaged with the meshing teeth. When the knob 44 is rotated, the gear 43 can drive the short belt 2 to move.

[0034] When in use, when wearing the helmet head circumference adjustment structure, first, the short strap 2 is rotated and adjusted by utilizing the characteristic that it can rotate around the fixed component 3, so as to change the height position of the adjuster component 4. When the adjuster component 4 is located at the active joint of the wearer's back neck, the knob 44 is rotated, and the knob 44 drives the gear 43 to rotate. The gear 43 drives the short strap 2 to move through the meshing teeth, thereby changing the exposed length of the short strap 2 and achieving tightness adjustment when wearing, so that the adjuster component 4 can be attached to the active joint of the wearer's back neck.

[0035] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A helmet head circumference adjustment structure, characterized in that: The invention comprises an adjustable headband (1), two groups of short straps (2), a fixing component (3) and an adjuster assembly (4), wherein the two groups of short straps (2) are detachably connected to the adjuster assembly (4), and the adjuster assembly (4) is used to adjust the exposed length of the short straps (2); The adjustable headband (1) comprises a transverse band (11) and two groups of lower extensions (12), wherein the outer sides of the lower extensions (12) and the short band (2) are provided with assembly holes (5), and the fixing component (3) is assembled in the assembly holes (5). The fixing component (3) connects the short band (2) to the lower extension (12) and allows the short band (2) to rotate around the fixing component (3), thereby adjusting the height position of the adjuster component (4) and the short band (2) to suit people with different neck lengths.

2. A helmet head circumference adjustment structure according to claim 1, characterized in that: The short strap (2) is composed of a transverse portion and a vertical portion. A cavity is provided in the middle of the transverse portion. Engaging teeth are arranged in the cavity. The adjuster assembly (4) adjusts the exposed length of the short strap (2) through the engaging teeth.

3. A helmet head circumference adjustment structure according to claim 2, characterized in that: The regulator assembly (4) comprises a regulator bottom cover (41), a regulator surface cover (42) and an adjusting component, wherein the regulator bottom cover (41) and the regulator surface cover (42) are detachably connected, the short strap (2) is movably arranged between the regulator bottom cover (41) and the regulator surface cover (42), and the adjusting component adjusts the exposed length of the short strap (2) through meshing teeth.

4. A helmet head circumference adjustment structure according to claim 3, characterized in that: The outer side of the regulator surface cover (42) is provided with a through hole, and the regulating component partially passes through the through hole and is rotatably arranged on one side of the regulator bottom cover (41).

5. A helmet head circumference adjustment structure according to claim 4, characterized in that: The adjusting component comprises a gear (43) and a knob (44); the gear (43) is detachably connected to one side of the knob (44) and is rotatably connected to the bottom cover (41) of the adjuster; when the knob (44) is rotated, the gear (43) can drive the short belt (2) to move.

6. A helmet head circumference adjustment structure according to any one of claims 1 to 5, characterized in that: The fixing component (3) is a rivet, which connects the short strap (2) with the adjustable head strap (1) and allows the short strap (2) to rotate around the rivet.

7. A helmet head circumference adjustment structure according to claim 6, characterized in that: It also comprises a drawstring (6), which is assembled on the adjustable headband (1) through a connecting component (7) and is used to surround the head of the wearer.

8. A helmet head circumference adjustment structure according to claim 7, characterized in that: At least four groups of waist holes are formed on the outer side of the adjustable headband (1), and the connecting components (7) are partially arranged at the waist holes; The connecting component (7) comprises a hanging piece (71), a sliding column (72) and a blocking piece (73), wherein the sliding column (72) is slidably arranged in the waist hole, the blocking piece (73) and the hanging piece (71) are distributed on both sides of the adjustable headband (1), and the drawstring (6) is sleeved on the hanging piece (71).

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