Helmet capable of reducing collision rotating force

Abstract

The utility model provides a helmet capable of reducing collision rotating force, which comprises a helmet body, a limiting structure arranged on the surface of an inner cavity of the helmet body, and an air fiber pad consisting of fibers and air gaps, and the air fiber pad is of a netted disordered interwoven three-dimensional structure; the surface of the side, back to the head, of the air fiber pad is attached to the surface of the inner cavity, the air fiber pad is attached to the surface of the inner cavity through tension generated by rebound resilience of fibers and friction force between the fibers and the surface of the inner cavity, and the air fiber pad is matched with the air fiber pad through a limiting structure to limit the moving space of the air fiber pad so as to prevent the air fiber pad from falling off from the surface of the inner cavity. After the helmet provided by the utility model is collided, the head of a wearer slides relative to the helmet and directly acts on the air fiber pad, so that the air fiber pad is elastically stretched under the sliding action, the rapid change of the angular velocity and the angular acceleration of the head is slowed down, and the brain injury caused by collision rotating force on the brain is reduced; and the helmet has good air permeability.

Description

Technical Field

[0001] The utility model relates to the technical field of helmet manufacturing, in particular to a helmet that reduces collision rotation force. Background Art

[0002] At present, traditional cycling helmets mainly provide cushioning and energy absorption during a straight-line collision to provide a certain degree of protection for the wearer's head. However, in actual cycling application scenarios, most helmet collisions have a certain angle change, which causes a rotational force with a change in direction when the helmet collides. Because the human brain is relatively soft and contains many nerve fibers, this rotational force is more harmful to the head, especially the brain, of the helmet wearer than direct linear force. Excessive rotational force can easily cause the brain to be twisted, squeezed, torn, and even cause serious damage to neurons and axons.

[0003] Therefore, the safety of traditional cycling helmets is limited. For this reason, helmet technologies such as MIPS (Multi-directional Impact Protection System) and Wavecel (foldable honeycomb structure lining) have appeared on the market, which can reduce the rotational force during a collision. However, cycling helmets using this type of technology are relatively expensive, and their actual protective function and effect still have a lot of room for improvement.

[0004] Furthermore, the helmet lining of a traditional cycling helmet usually adopts a combination of an outer layer of cloth and an inner layer of sponge. The air permeability of this sponge-cloth combination helmet lining is poor, and the rider's head is prone to feel hot and stuffy when worn for a long time in hot summer weather; when used in rainy weather, the helmet lining is prone to odor due to difficulty in drying in time. In addition, when cycling helmets are used as supporting helmets for shared electric vehicles or shared bicycles for frequent public sharing, the sponge-cloth combination helmets are prone to absorb a lot of sweat and adhere to hair oil during long-term sharing under hot and humid conditions, causing hygiene problems such as the helmet lining being difficult to clean, easy to mold and breed bacteria, thereby reducing the user's comfort, experience and seasonal adaptability of the helmet when wearing the cycling helmet.

[0005] At the same time, when the inner size of the helmet does not match the user's head, the traditional helmet lining cannot effectively improve the fit of the helmet. It is easy for the head to be clamped and the helmet to press on the top of the user's head due to the mismatch of the helmet shape, affecting the wearing effect and resulting in low versatility of the helmet.

[0006] In summary, in order to better protect the lives of riders, how to provide a cycling helmet that can reduce the rotational force of helmet collision, reduce the chance of brain injury of riders and has good protective effect is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0007] The present utility model provides a helmet for reducing collision rotation force to solve the technical problem in the prior art that there is a lack of a cycling helmet that can reduce collision rotation force and has good protection effect.

[0008] To solve the above problems, the technical solution adopted by the present utility model is:

[0009] The present utility model provides a helmet for reducing collision rotation force, including a helmet body. A limiting structure is arranged on the inner cavity surface of the helmet body. The helmet further includes:

[0010] An air fiber pad, which is composed of fiber filaments and air gaps, and the air fiber pad has a reticular disordered intertwined three-dimensional structure;

[0011] One side surface of the air fiber pad facing away from the head is attached to the inner cavity surface. The tension generated by the resilience of the fiber filaments and the frictional force between it and the inner cavity surface cause it to adhere to the inner cavity surface, and the movement space of the air fiber pad is restricted by the cooperation of the limiting structure and the air fiber pad to prevent the air fiber pad from falling off the inner cavity surface.

[0012] Preferably, the limiting structure includes:

[0013] A plurality of limiting blocks, which are arranged at intervals around the circumference of the helmet on the inner cavity surface and enclose a first accommodation space matching the size of the air fiber pad;

[0014] The air fiber pad is attached to the inner cavity surface located in the first accommodation space, and the peripheral edges of the air fiber pad are respectively in abutting cooperation with each limiting block, so that the air fiber pad is limited in the first accommodation space.

[0015] Preferably, the helmet body includes an outer helmet layer and an inner buffer layer laid on the inner surface of the outer helmet layer. The inner cavity surface is the inner surface of the inner buffer layer facing away from the outer helmet layer, and the inner cavity surface is connected to the opening of the helmet;

[0016] The limiting structure includes:

[0017] A plurality of limiting female fasteners, each limiting female fastener includes a female fastener seat and a female fastener retaining ring arranged at one end of the female fastener seat. The limiting female fasteners are integrally formed in the inner buffer layer, the female fastener retaining rings are exposed on the inner cavity surface, and a plurality of limiting female fasteners are arranged at intervals along the circumference of the helmet on the inner edge of the inner cavity surface connecting the opening and enclose a second accommodation space matching the size of the air fiber pad;

[0018] A limiting belt, with a plurality of positioning male fasteners arranged at intervals on one side of the limiting belt and matching the female fastener retaining rings;

[0019] The limiting belt extends circumferentially around the helmet and is arranged on the inner edge of the opening, and is connected to the inner cavity surface through the corresponding cooperation of the positioning male fasteners and the female fastener retaining rings;

[0020] The air fiber pad is attached to the inner cavity surface located in the second accommodation space. The peripheral edge of the air fiber pad abuts and cooperates with the limiting belt, so that the air fiber pad is limited in the second accommodation space.

[0021] Preferably, the helmet body includes a helmet outer layer and an inner buffer layer laid on the inner surface of the helmet outer layer. The inner cavity surface is the inner surface of the inner buffer layer facing away from the helmet outer layer;

[0022] The limiting structure is a limiting groove provided on the inner cavity surface, and the shape of the limiting groove matches the outer shape of the air fiber pad;

[0023] The air fiber pad is attached to the inner cavity surface by the surface of one side facing away from the head fitting with the bottom surface of the limiting groove, and the air fiber pad is limited in the limiting groove by the cooperation of the peripheral side of the air fiber pad with the inner side wall of the limiting groove.

[0024] Furthermore, the limiting structure further includes:

[0025] A connecting adhesive layer, attached to the matching limiting stop block on the inner cavity surface;

[0026] A first hook surface layer, attached to the side of the connecting adhesive layer facing away from the inner cavity surface;

[0027] The limiting stop block includes:

[0028] A flexible inner lining;

[0029] A block cloth sleeve, wrapped around the outer surface of the flexible inner lining;

[0030] The limiting stop block is connected to the inner cavity surface through the cooperation of the flexible inner lining and the first hook surface layer.

[0031] Preferably, a hair surface layer is provided on the side of the starting end of the limiting belt around the helmet facing away from the inner cavity surface, and a second hook surface layer is provided on the side of the ending end of the limiting belt around the helmet facing the inner cavity surface;

[0032] The ending end is closed and connected to the starting end through the paste cooperation of the second hook surface layer and the hair surface layer. At this time, the limiting belt serves as a closed adjustment ring and is in direct contact with the user's head, and the inner perimeter size of the adjustment ring can be adjusted by changing the paste overlap length of the second hook surface layer and the hair surface layer.

[0033] Preferably, the limiting belt includes:

[0034] A flexible inner belt;

[0035] A cloth belt sleeve, wrapped around the outer surface of the flexible inner belt;

[0036] The positioning sub - buckle includes:

[0037] A sub - buckle seat and a sub - buckle stud provided at one end of the sub - buckle seat;

[0038] The male buckle seat abuts against the outer side of the back surface of the cloth belt sleeve facing away from the inner cavity surface. The male buckle stud penetrates through the corresponding stud hole provided in the cloth belt sleeve to the inner side of the cloth belt sleeve facing the inner cavity surface and cooperates with the female buckle ring.

[0039] Preferably, the air fiber pad has a breathable fabric layer attached to the surface on the wearing side facing the head.

[0040] Preferably, the breathable fabric layer is connected to the air fiber pad by hot pressing, ultrasonic, high frequency or gluing.

[0041] Preferably, at least two air fiber pads are distributed on the inner cavity surface.

[0042] Preferably, the fiber filaments are solid and hollow tubular.

[0043] Preferably, the density of the air fiber pad is 30 - 120 g / L.

[0044] Preferably, the fiber filaments are made of POE, PE, TPEE or PP materials.

[0045] Compared with the prior art, the present utility model has the following beneficial effects:

[0046] For the helmet provided by the present utility model for reducing the collision rotation force, after the helmet collides, the head of the wearer will slide relative to the helmet and directly act on the air fiber pad. The air fiber pad is composed of fiber filaments and air gaps and has a reticular disordered intertwined three-dimensional structure. It is equivalent to the air fiber pad including thousands to tens of thousands of tiny springs, so that the air fiber pad produces elastic stretching under the sliding action, thereby slowing down the sharp changes in the angular velocity and angular acceleration of the head of the wearer, and further reducing the brain damage caused by the collision rotation force received by the head and brain of the wearer. At the same time, the air fiber pad has a low density, and the volume ratio of its air gaps is relatively large, enabling air to flow freely through the gaps between the air fiber pad and the head of the wearer in the inner cavity of the helmet, greatly reducing the stuffy feeling when wearing the helmet. In addition, the air fiber pad is not easy to absorb sweat and oil, so it is not easy to breed bacteria and is easy to clean, greatly improving the comfort of the wearer using the helmet for a long time and improving the sanitary conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions proposed by the present utility model, the present utility model will be described in detail below in combination with the embodiments and the drawings. It should be understood that the following specific embodiments and the drawings in the description of the specification are only some embodiments of the present utility model, and those skilled in the art can make changes to these drawings under the concept of the present utility model.

[0048] Figure 1 It is a schematic bottom view structure diagram of Embodiment 1 of the helmet provided by the present utility model;

[0049] Figure 2 is Figure 1 a schematic cross-sectional structure diagram of the helmet along the A-A direction in

[0050] Figure 3 is Figure 2 a schematic enlarged partial structure diagram of the B area of the helmet in

[0051] Figure 4 a schematic bottom view structure diagram of the second embodiment of the helmet provided by the present utility model;

[0052] Figure 5 is Figure 4 a schematic cross-sectional structure diagram of the helmet along the C-C direction in

[0053] Figure 6 is Figure 5 a schematic enlarged partial structure diagram of the D area of the helmet in

[0054] Figure 7 is Figure 5 a schematic enlarged partial structure diagram of the E area of the helmet in

[0055] Figure 8 a schematic bottom view structure diagram of the third embodiment of the helmet provided by the present utility model;

[0056] Figure 9 is Figure 8 a schematic cross-sectional structure diagram of the helmet along the F-F direction in

[0057] Figure 10 is Figure 9 a schematic enlarged partial structure diagram of the G area of the helmet in

[0058] Figure 11 is Figure 9 a schematic structure diagram of the helmet after hiding the air fiber pad in

[0059] Among them, the main reference signs of each drawing in the figure are as follows:

[0060] 1. Helmet body; 11. Helmet outer layer; 12. Inner buffer layer; 121. Inner cavity surface; 13. Opening; 2. Air fiber pad; 21. Fiber filament; 22. Air gap; 23. Breathable fabric layer; 3. Limiting structure; 31. Limiting block; 311. Flexible lining; 312. Block cloth cover; 313. First hook surface layer; 314. Connecting rubber layer; 32. Limiting belt; 321. Flexible inner belt; 322. Cloth belt cover; 3221. Nail hole; 323. Positioning buckle; 3231. Buckle seat; 3232. Buckle nailing; 324. Starting end; 3241. Fur surface layer; 325. End end; 3251. Second hook surface layer; 326. Limiting female buckle; 3261. Female buckle seat; 3262. Female buckle clamp; 33. Limiting groove; 4. Strap.

[0061] Among them, the other marks in the figure are as follows:

[0062] H, first accommodating space; I, second accommodating space; X, first horizontal direction; Y, second horizontal direction; Z, vertical direction. DETAILED DESCRIPTION

[0063] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figures 1-11 And embodiments, the utility model is further described in detail.

[0064] Please also read Figures 1-11 The helmet for reducing collision rotation force provided by the utility model comprises a helmet body 1, an inner cavity surface 121 of the helmet body 1 is provided with a limiting structure 3, and the helmet further comprises:

[0065] The air fiber pad 2 is composed of fiber filaments 21 and air gaps 22, and the air fiber pad 2 is in a mesh-like disordered interwoven three-dimensional structure; the side surface of the air fiber pad 2 facing away from the wearer's head is in contact with the inner cavity surface 121, and the air fiber pad 2 is attached to the inner cavity surface 121 through the tension generated by the resilience of the fiber filaments 21 and the friction between the air fiber pad 2 and the inner cavity surface 121, and cooperates with the air fiber pad 2 through a limiting structure 3 to limit the movement space of the air fiber pad 2 in directions parallel to and perpendicular to the inner cavity surface 121, so as to prevent the air fiber pad 2 from falling off the inner cavity surface 121, and make the air fiber pad 2 firmly attached to the inner cavity surface 121.

[0066] The contact surface between the air fiber pad 2 and the wearer's head is a disorderly distributed fiber filament 21, which has good elasticity, softness and air permeability, avoiding the stuffy feeling caused by long-term contact with traditional sponges and cloth linings when worn, and the problems of wearer hygiene, health and difficulty in cleaning the lining caused by sweat and oil absorption of traditional sponges and cloth linings.

[0067] Please refer to Figures 1-3 as well. In the first embodiment of the helmet provided by the present utility model, the limiting structure 3 includes:

[0068] A plurality of limiting blocks 31 are arranged at intervals around the circumference of the helmet on the inner cavity surface 121 and enclose a first accommodating space H that matches the size of the air fiber pad 2.

[0069] The air fiber pad 2 is attached to the inner cavity surface 121 located within the first accommodating space H through the resilience of the fiber filaments 21 and the frictional force between it and the inner cavity surface 121. At the same time, the peripheral edges of the air fiber pad 2 are respectively in abutting cooperation with each of the limiting blocks 31, so that the air fiber pad 2 is firmly limited within the first accommodating space H, preventing the air fiber pad 2 from falling off the inner cavity surface 121.

[0070] Please refer to Figures 1-3 as well. In a preferred embodiment of the first embodiment, the limiting structure 3 further includes:

[0071] A connecting adhesive layer 314 is attached to the inner cavity surface 121 at positions corresponding to each of the limiting blocks 31; a first hook surface layer 313 is attached to the side of the connecting adhesive layer 314 facing away from the inner cavity surface 121.

[0072] The limiting block 31 includes: a flexible inner lining 311; a block cloth sleeve 312 that wraps around the outer surface of the flexible inner lining 311; the block cloth sleeve 312 is equivalent to a rough surface of a magic tape, and the block cloth sleeve 312 and the first hook surface layer 313 form a magic tape structure that can be adhesively cooperated with each other. The limiting block 31 is adhesively cooperated with the first hook surface layer 313 through the rough surface of the flexible inner lining 311 and is detachably connected to the inner cavity surface 121.

[0073] As a preferred embodiment of the first embodiment, the height of the limiting block 31 protruding from the inner cavity surface 121 is 5 - 15 mm.

[0074] In one embodiment of the first embodiment, the connecting adhesive layer 314 is double-sided adhesive, hot melt adhesive or glue, preferably double-sided adhesive.

[0075] In one embodiment of the first embodiment, the flexible inner lining 311 is made of flexible cotton lining, and the block cloth sleeve 312 is a velvet cloth sleeve that is hot-pressed and wraps around and covers the outer surface of the flexible cotton lining.

[0076] Please refer to Figures 1-3, in an implementation manner of Embodiment 1, the helmet body 1 includes a helmet outer layer 11 and an inner buffer layer 12 laid on the inner surface of the helmet outer layer 11. The inner cavity surface 121 is the inner surface of the inner buffer layer 12 facing away from the helmet outer layer 11, that is, the inner cavity surface 121 is the surface of the inner buffer layer 12 facing the wearer's head, and the inner cavity surface 121 is connected to the opening 13 of the helmet; the connecting adhesive layer 314 is attached to the inner cavity surface 121 of the inner buffer layer 12 facing the wearer's head at positions matching each limiting block 31.

[0077] Please refer to Figure 1 , in a more optimal implementation manner of Embodiment 1, there are four of the above-mentioned limiting blocks 31. Two of the limiting blocks 31 are in an arc-shaped long strip shape and are relatively spaced apart on the left and right sides of the inner cavity surface 121 facing the wearer's head (that is, two of the limiting blocks 31 are relatively spaced apart at both ends of the inner cavity surface 121 in the first horizontal direction X), and arc-shapedly extend symmetrically along the curvature of the inner cavity surface 121; the other two limiting blocks 31 are in a disc shape and are relatively spaced apart on the front and back sides of the inner cavity surface 121 facing the wearer's head (that is, the other two limiting blocks 31 are relatively spaced apart at both ends of the inner cavity surface 121 in the second horizontal direction Y perpendicular to the first horizontal direction X). The four limiting blocks 31 are arranged at intervals around the circumference of the helmet on the inner cavity surface 121 and enclose the above-mentioned first accommodation space H matching the size of the air fiber pad 2.

[0078] Let the direction perpendicular to both the first horizontal direction X and the second horizontal direction be the vertical direction Z. Then, when the helmet is worn, it is preferably such that the vertical direction Z is perpendicular to the ground, and the four limiting blocks 31 are all located on the same horizontal plane parallel to the first horizontal direction X and the second horizontal direction Y.

[0079] The air fiber pad 2 is attached to the inner cavity surface 121 located in the first accommodation space H through the resilience of the fiber filaments 21 and the frictional force between it and the inner cavity surface 121. At the same time, the periphery of the air fiber pad 2 is respectively in abutting cooperation with the four limiting blocks 31, so that the air fiber pad 2 is firmly limited in the first accommodation space H, preventing the air fiber pad 2 from falling off the inner cavity surface 121.

[0080] In other implementation manners of Embodiment 1 (not shown in the figure), there may also be three or more than five of the above-mentioned limiting blocks 31, as long as each limiting block 31 is arranged at intervals around the circumference of the helmet on the inner cavity surface 121 and encloses the first accommodation space H matching the size of the air fiber pad 2.

[0081] Please refer to together Figures 4-7, in the second embodiment of the helmet provided by the present utility model, the helmet body 1 includes a helmet outer layer 11 and an inner buffer layer 12 laid on the inner surface of the helmet outer layer 11. The above-mentioned inner cavity surface 121 is the inner surface of the inner buffer layer 12 facing away from the helmet outer layer 11, that is, the inner cavity surface 121 is the surface of the inner buffer layer 12 facing the wearer's head, and the inner cavity surface 121 is connected to the opening 13 of the helmet;

[0082] The limiting structure 3 includes:

[0083] A plurality of limiting female buckles 326, the limiting female buckle 326 includes a female buckle seat 3261 and a female buckle ring 3262 provided at one end of the female buckle seat 3261. The limiting female buckle 326 is integrally formed in the inner buffer layer 12, and the female buckle ring 3262 is exposed on the inner cavity surface 121 of the inner buffer layer 12, and the inner hole of the female buckle ring 3262 communicates with the inner cavity surface 121. A plurality of limiting female buckles 326 are arranged at intervals along the circumferential direction of the helmet at the inner edge of the inner cavity surface 121 connected to the opening 13 and enclose a second accommodation space I matching the size of the air fiber pad 2; A limiting belt 32, on one side of the limiting belt 32, a plurality of positioning male buckles 323 matching the female buckle rings 3262 are arranged at intervals along the length direction.

[0084] The limiting belt 32 is arranged to extend circumferentially around the helmet at the inner edge close to the opening 13 of the helmet and is connected to the inner cavity surface 121 through the corresponding cooperation of the positioning male buckles 323 and the female buckle rings 3262. The air fiber pad 2 is attached to the inner cavity surface 121 located in the second accommodation space I by the resilience of the fiber filaments 21 and the friction force between it and the inner cavity surface 121. At the same time, the periphery of the air fiber pad 2 abuts and cooperates with the limiting belt 32, so that the air fiber pad 2 is limited in the second accommodation space I.

[0085] Please refer to Figure 4, in the preferred embodiment of the second embodiment, the width dimension of the air fiber pad 2 between the left and right sides is smaller than its length dimension between the front and back sides, that is, the maximum width dimension of the air fiber pad 2 in the second horizontal direction Y is smaller than its maximum length dimension in the first horizontal direction X; when the air fiber pad 2 is attached to the inner cavity surface 121 located in the second accommodation space I, there is a spaced arrangement between the left and right sides of the air fiber pad 2 relative to the wearer's head (i.e., the two ends of the air fiber pad 2 in the first horizontal direction X) and the left and right sides of the limiting band 32 (i.e., the two ends of the limiting band 32 in the first horizontal direction X), and the front and back sides of the air fiber pad 2 relative to the wearer's head (i.e., the two ends of the air fiber pad 2 in the second horizontal direction Y) are respectively abutted against the front and back sides of the limiting band 32 (i.e., the two ends of the limiting band 32 in the second horizontal direction Y). At this time, the air fiber pad 2 only partially covers the inner cavity surface 121 at the front and back sides (i.e., the two ends in the second horizontal direction Y), and its left and right sides (i.e., the two ends in the first horizontal direction X) do not completely cover the inner cavity surface 121, so the left and right sides of the air fiber pad 2 do not contact the limiting band 32.

[0086] In other embodiments of the second embodiment (not shown in the figure), the width dimension of the air fiber pad 2 between the left and right sides may also be greater than or equal to its length dimension between the front and back sides, that is, the maximum width dimension of the air fiber pad 2 in the second horizontal direction Y may also be greater than or equal to its maximum length dimension in the first horizontal direction X.

[0087] When the maximum width dimension of the air fiber pad 2 in the second horizontal direction Y is greater than its maximum length dimension in the first horizontal direction X and the air fiber pad 2 is attached to the inner cavity surface 121 located in the second accommodation space I, the left and right sides of the air fiber pad 2 relative to the wearer's head (i.e., the two ends of the air fiber pad 2 in the first horizontal direction X) are respectively abutted against the left and right sides of the limiting band 32 (i.e., the two ends of the limiting band 32 in the first horizontal direction X), and there is a spaced arrangement between the front and back sides of the air fiber pad 2 relative to the wearer's head (i.e., the two ends of the air fiber pad 2 in the second horizontal direction Y) and the front and back sides of the limiting band 32 (i.e., the two ends of the limiting band 32 in the second horizontal direction Y). At this time, the air fiber pad 2 only partially covers the inner cavity surface 121 at the left and right sides (i.e., the two ends in the first horizontal direction X), and its front and back sides (i.e., the two ends in the second horizontal direction Y) do not completely cover the inner cavity surface 121, so the front and back sides of the air fiber pad 2 do not contact the limiting band 32.

[0088] When the maximum width dimension of the air fiber pad 2 in the second horizontal direction Y is equal to its maximum length dimension in the first horizontal direction X, and the air fiber pad 2 is attached to the inner cavity surface 121 located within the second accommodation space I, its left and right sides relative to the wearer's head (i.e., the two ends of the air fiber pad 2 in the first horizontal direction X) respectively abut against the left and right sides of the limiting band 32 (i.e., the two ends of the limiting band 32 in the first horizontal direction X). At the same time, the front and back sides of the air fiber pad 2 relative to the wearer's head (i.e., the two ends of the air fiber pad 2 in the second horizontal direction Y) respectively abut against the front and back sides of the limiting band 32 (i.e., the two ends of the limiting band 32 in the second horizontal direction Y). At this time, the air fiber pad 2 not only completely covers the inner cavity surface 121 on the left and right sides (the two ends in the second horizontal direction Y), but also the air fiber pad 2 completely covers the inner cavity surface 121 on the front and back sides (the two ends in the first horizontal direction X) at the same time.

[0089] Please refer to Figures 4-7 , in the preferred embodiment of the second embodiment, a hair surface layer 3241 is provided on the side of the starting end 324 of the limiting band 32 around the helmet facing away from the inner cavity surface 121, and a second hook surface layer 3251 is provided on the side of the ending end 325 of the limiting band 32 around the helmet facing the inner cavity surface 121.

[0090] The ending end 325 is closed and connected to the starting end 324 by the paste fit of the second hook surface layer 3251 and the hair surface layer 3241. At this time, the limiting band 32 is in direct contact with the user's head as a closed adjustment loop, and the inner circumference size of the adjustment loop can be adjusted by changing the paste overlap length of the second hook surface layer 3251 and the hair surface layer 3241, so that the helmet can be adapted to wearers with different head circumferences.

[0091] Please refer to Figures 4-7 , in a more preferred embodiment of the second embodiment, the length of the limiting band 32 is greater than the inner circumference of the opening 13 of the helmet. A positioning sub - buckle 323 is provided in the middle of one side of the limiting band 32 in its length direction, and two other positioning sub - buckles 323 are respectively provided at both ends of the limiting band 32 in its length direction near the starting end 324 and the ending end 325. Three limiting mother - buckles 326 are arranged at intervals along the circumference of the helmet at the inner edge of the connection opening 13 of the inner cavity surface 121 and respectively match the positions of the respective positioning sub - buckles 323.

[0092] The limiting belt 32 is arranged to extend circumferentially around the helmet near the inner edge of the opening 13 of the helmet, and is respectively and correspondingly connected to the inner cavity surface 121 through three positioning male fasteners 323 and three female buckle rings 3262. At this time, a section from the starting end 324 of the limiting belt 32 to the nearest positioning male fastener 323 is a free section that can swing around the mating part of the positioning male fastener 323 and the female buckle ring 3262. At the same time, a section from the ending end 325 of the limiting belt 32 to the nearest positioning male fastener 323 is also another free section that can swing around the mating part of the positioning male fastener 323 and the female buckle ring 3262. When the two free sections respectively with the starting end 324 and the ending end 325 swing to coincide with each other, the second hook surface layer 3251 and the hair surface layer 3241 are pasted and matched to make the ending end 325 be closed and connected to the starting end 324. At this time, the limiting belt 32 serves as a closed adjustment loop and is in direct contact with the user's head, and the inner circumference size of the adjustment loop can be adjusted by changing the pasted overlapping length of the second hook surface layer 3251 and the hair surface layer 3241.

[0093] By changing the positions of the positioning male fasteners 323 near the starting end 324 and the ending end 325 in the length direction of the limiting belt 32, the changing range of the pasted overlapping length of the second hook surface layer 3251 and the hair surface layer 3241 can be controlled, so as to control the adjustment range of the inner circumference size of the adjustment loop within a certain interval that matches the size of the helmet body 1.

[0094] In other implementation manners of the second embodiment (not shown in the figure), four or more positioning male fasteners 323 and their matching limiting female buckles 326 can also be provided. Only need to arrange the limiting female buckles 326 at intervals along the circumference of the helmet at the inner edge of the connection opening 13 of the inner cavity surface 121 to form a second accommodation space I that matches the size of the air fiber pad 2, and the number and positions of the positioning male fasteners 323 arranged on the limiting belt 32 can be matched with them.

[0095] Please refer to Figures 4-7 , in the preferred implementation manner of the second embodiment, the limiting belt 32 includes:

[0096] A flexible inner belt 321; a cloth belt sleeve 322, which wraps the outer surface of the flexible inner belt 321.

[0097] The positioning male fastener 323 includes: a male fastener seat 3231 and a male fastener piercing pin 3232 arranged at one end of the male fastener seat 3231; the male fastener seat 3231 abuts against the outer side of the cloth belt sleeve 322 facing away from the inner cavity surface 121, and the male fastener piercing pin 3232 passes through the corresponding piercing hole 3221 provided on the cloth belt sleeve 322 to the inner side of the cloth belt sleeve 322 facing the inner cavity surface 121, and is matched with the female buckle ring 3262.

[0098] In a more preferred embodiment of the second embodiment, the flexible inner belt 321 is an EVA cotton inner belt, and the thickness of the EVA cotton inner belt is preferably 2 mm. The cloth belt cover 322 is a polyester cloth belt cover that is sewn and wrapped around the outer surface of the EVA cotton inner belt. The flexible inner belt 321 can also be made of a flexible plastic material.

[0099] Please refer to Figures 8-11 , in the third embodiment of the helmet provided by the present invention, the helmet body 1 includes a helmet outer layer 11 and an inner buffer layer 12 laid on the inner surface of the helmet outer layer 11. The inner cavity surface 121 is the inner surface of the inner buffer layer 12 facing away from the helmet outer layer 11; the limiting structure 3 is a limiting groove 33 provided on the inner cavity surface 121, and the shape of the limiting groove 33 matches the outer shape of the air fiber pad 2.

[0100] The air fiber pad 2 is attached to the inner cavity surface 121 by the surface on its side facing away from the head being in contact with the bottom surface of the limiting groove 33, and the air fiber pad 2 is limited in the limiting groove 33 by the cooperation of the peripheral side of the air fiber pad 2 and the inner side wall of the limiting groove 33.

[0101] In a preferred embodiment of the third embodiment, the size of the limiting groove 33 is slightly smaller than the size of the air fiber pad 2, so that the peripheral side of the air fiber pad 2 is in interference fit with the inner side wall of the limiting groove 33, clamping and firmly limiting the air fiber pad 2 in the limiting groove 33.

[0102] Please refer to Figures 8-10 , as a common preferred embodiment of the first to third embodiments, the surface of the air fiber pad 2 facing the user's head is attached with a breathable fabric layer 23, and the breathable fabric layer 23 is in indirect contact with the wearer's head skin, further improving the wearing comfort of the helmet.

[0103] As another embodiment of the first to third embodiments (not shown in the figure), to improve the appearance texture of the air fiber pad 2 and ensure the firm connection between the breathable fabric layer 23 and the air fiber pad 2, the surface of the air fiber pad 2 on the opposite side facing away from the wearer's head can also be attached with a breathable fabric layer 23. In this way, breathable fabric layers 23 are provided on both opposite sides of the air fiber pad 2, and the air fiber pad 2 is accommodated in the closed space surrounded by the breathable fabric layers 23 on both sides. The air fiber pad 2 is connected to the breathable fabric layers 23 on both sides, and its connection firmness is better than the connection between the air fiber pad 2 and the breathable fabric layer 23 on one side, and the overall appearance texture of the air fiber pad 2 is improved.

[0104] As a more preferred embodiment of the first to third embodiments, the breathable fabric layer 23 is preferably made of mesh cloth and is connected to the air fiber pad 2 by hot pressing or ultrasonic or high frequency, or by gluing.

[0105] Please refer toFigure 1 , 4 , 8. As a common implementation manner of Embodiments 1 to 3, only one relatively large air fiber pad 2 is provided on the inner cavity surface 121 of the helmet.

[0106] As another implementation manner common to Embodiments 1 to 3 (not shown in the figure), at least two relatively small air fiber pads 2 are distributed on the inner cavity surface 121, such as on the left, right, front, rear, and middle of the inner cavity surface 121, etc. The number of the above limiting structures 3 and their distribution positions on the inner cavity surface 121 match the shapes and sizes of the respective air fiber pads 2, which will not be elaborated here.

[0107] As a common implementation manner of Embodiments 1 to 3, the fiber filaments 21 are solid and hollow tubular.

[0108] As a common implementation manner of Embodiments 1 to 3, the diameter of the fiber filaments 21 is 0.3 - 1 mm.

[0109] As a common implementation manner of Embodiments 1 to 3, the fiber filaments 21 are made of POE or PE or TPEE or PP materials.

[0110] As a common implementation manner of Embodiments 1 to 3, the density of the air fiber pad 2 is 30 - 120 g / L.

[0111] As a common implementation manner of Embodiments 1 to 3, the thickness of the air fiber pad 2 is 4 - 25 mm.

[0112] As a common implementation manner of Embodiments 1 to 3, the inner buffer layer 12 is made of EPS or EPP materials.

[0113] Please refer to Figure 1 , 2 , 4, 5, 8, 9. As a common implementation manner of Embodiments 1 to 3, the helmet further includes:

[0114] A strap 4, connected to the helmet body 1, for binding the helmet to the wearer's head when wearing the helmet.

[0115] In Embodiment 1 of the helmet provided by the present utility model, a preferred manufacturing method of the helmet is as follows:

[0116] Select a 9-mm-thick flexible cotton as the flexible cotton lining (flexible lining 311). On both sides of the flexible cotton, attach velvet fabrics with a density of 160 g / yard. The velvet fabrics cover the outer surface of the flexible cotton lining (flexible lining 311). The flexible cotton lining (flexible lining 311) together with the velvet cloth cover (block cloth cover 312) is formed by hot pressing to form a velvet cloth cover (block cloth cover 312) that wraps the outer surface of the flexible cotton lining (flexible lining 311), and is trimmed with a die cutter to obtain the flexible limit block 31. In this way, four limit blocks 31 are obtained, two of which are disc-shaped and the other two are arc-shaped long strips.

[0117] Select six hook-and-loop fasteners with a diameter of 20 mm as the first hook layer 313, and select double-sided tape as the connecting adhesive layer 314. Fix and connect the back sides of the six hook-and-loop fasteners (first hook layer 313) facing away from their hooks to the inner cavity surface 121 of the helmet body 1 or the inner buffer layer 12 with double-sided tape (connecting adhesive layer 314). The six hook-and-loop fasteners (first hook layer 313) are arranged at intervals around the circumference of the helmet on the inner cavity surface 121. One hook-and-loop fastener (first hook layer 313) is provided at each of the front and rear end positions of the inner cavity surface 121 in the second horizontal direction Y, respectively, for connecting two of the disc-shaped limit blocks 31; two hook-and-loop fasteners (first hook layer 313) are provided at each of the left and right end positions of the inner cavity surface 121 in the first horizontal direction X. The two hook-and-loop fasteners (first hook layer 313) at the same end in the first horizontal direction X are used to jointly connect the arc-shaped long-strip limit blocks 31.

[0118] Take the velvet cloth cover (block cloth cover 312) on the outer surface of the limit block 31 as the loop-and-loop fastener, and bond and cooperate the velvet cloth cover (block cloth cover 312) with the hook-and-loop fastener (first hook layer 313) to firmly connect the air fiber pad 2 to the inner cavity surface 121 of the helmet. The four limit blocks 31 are arranged at intervals around the circumference of the helmet on the inner cavity surface 121 and enclose a first accommodation space H that matches the size of the air fiber pad 2.

[0119] Finally, attach the air fiber pad 2 to the inner cavity surface 121 located within the first accommodation space H by the tension generated by the resilience of the fiber filaments 21 and the friction force between it and the inner cavity surface 121. At the same time, the periphery of the air fiber pad 2 is respectively in abutting cooperation with the inner cavity surface 121 and a plurality of preset limit blocks 31 around the air fiber pad 2, so that the air fiber pad 2 is firmly limited within the first accommodation space H surrounded by each limit block 31, restricting the movement space of the air fiber pad 2 in the directions parallel and perpendicular to the inner cavity surface 121, and preventing the air fiber pad 2 from detaching from the inner cavity surface 121 of the helmet.

[0120] In the second embodiment of the helmet provided by the present utility model, a preferred manufacturing method of the helmet is as follows:

[0121] Select EVA cotton with a thickness of 2 mm as the flexible inner belt 321, select polyester fabric, sew and wrap the polyester fabric on the outer surface of the EVA cotton inner belt (flexible inner belt 321) to form a cloth belt sleeve 322 wrapped on the outer surface of the EVA cotton inner belt (flexible inner belt 321), and obtain a limiting belt 32 composed of the cloth belt sleeve 322 and the EVA cotton inner belt (flexible inner belt 321).

[0122] On one side of the limiting belt 32, a nail-piercing hole 3221 with a diameter of 2.5 mm is opened in the middle in the length direction, and on the same side of the limiting belt 32, two other nail-piercing holes 3221 with a diameter of 2.5 mm are respectively opened near the starting end 324 and the ending end 325 in the length direction. Pass the sub-button seats 3231 of the three positioning sub-buttons 323 through the corresponding nail-piercing holes 3221 and snap them into the limiting belt 32, and make the sub-button seats 3231 abut against the inner surface of the cloth belt sleeve 322, and the sub-button nails 3232 pass through the cloth belt sleeve 322 from the corresponding nail-piercing holes 3221.

[0123] Select EPS or EPP as the manufacturing material of the inner buffer layer 12, and integrally and spacedly arrange three limiting female buttons 326 along the circumference of the helmet at the inner edge of the connection opening 13 of the inner cavity surface 121 of the inner buffer layer 12 to form a second accommodation space I matching the size of the air fiber pad 2; and the distribution positions of the three limiting female buttons 326 on the inner cavity surface 121 respectively match the positions of the three positioning sub-buttons 323, and the female button retaining rings 3262 of each limiting female button 326 are exposed on the inner cavity surface 121 of the inner buffer layer 12 and face the wearer's head, and the inner holes of the female button retaining rings 3262 communicate with the inner cavity surface 121 of the inner buffer layer 12.

[0124] Sew a fleece magic button with a width of 25 mm and a length of 70 mm on the side of the limiting belt 32 facing away from the inner cavity surface 121 at one end of the starting end 324 surrounding the helmet (i.e., on the side of the starting end 324 of the limiting belt 32 facing the wearer's head) as the fleece layer 3241, and sew a fleece magic button with a width of 25 mm and a length of 70 mm on the opposite side of the limiting belt 32 facing the inner cavity surface 121 at the opposite end of the ending end 325 surrounding the helmet (i.e., on the opposite side of the ending end 325 of the limiting belt 32 facing away from the wearer's head) as the second hook layer 3251.

[0125] The air fiber pad 2 is attached to the inner cavity surface 121 located in the second accommodation space I by the resilience of the fiber filaments 21 and the frictional force between it and the inner cavity surface 121. Then, the limiting belt 32 is circumferentially arranged around the helmet with its starting end 324 as the extension starting point and its ending end 325 as the extension ending point, near the inner edge of the opening 13 of the helmet. And through the cooperation of the stud 3232 of the sub - buckle of the three positioning buckles and the buckle ring 3262 of the corresponding limiting female buckle 326, the three positioning buckles are respectively detachably connected to the inner cavity surface 121, so that the limiting belt 32 is fixedly connected to the inner cavity surface 121. At the same time, the peripheral edge of the air fiber pad 2 is abutted and matched with the inner edge of the limiting belt 32, so that the air fiber pad 2 is limited in the second accommodation space I.

[0126] At this time, the second hook surface layer 3251 and the fluff surface layer 3241 are pasted and matched, so that the ending end 325 of the limiting belt 32 is closed - connected to the starting end 324. At this time, the limiting belt 32 serves as a closed adjustment ring and is in direct contact with the user's head, and the inner circumference size of the adjustment ring can be adjusted by changing the pasted overlapping length of the second hook surface layer 3251 and the fluff surface layer 3241, so that the helmet is adapted to wearers with different head sizes.

[0127] In the third embodiment of the helmet provided by the present utility model, a preferred manufacturing method of the helmet is as follows:

[0128] Select EPS or EPP as the manufacturing material of the inner buffer layer 12, engrave a boss on the formed convex mold, and the setting position and size of the boss are matched with the limiting groove 33. After sucking EPS or EPP particles into the mold, steam is introduced for molding, and the mold is opened after cooling to obtain the buffer layer 12 with the limiting groove 33. Then, the inner buffer layer 12 is fixed on the inner surface of the helmet outer layer 11 of the helmet body 1 facing the wearer's head through glue.

[0129] Select an air fiber pad 2 composed of fiber filaments 21 and air gaps 22 made of POE or PE or TPEE or PP materials, with a mesh - like disordered intertwined three - dimensional structure. Select a mesh cloth with a weight specification of 160 g / yard as the breathable fabric layer 23, and connect the mesh cloth (breathable fabric layer 23) to the wearing side surface of the air fiber pad 2 facing the user's head through hot pressing or ultrasonic or high - frequency action, or through adhesive bonding, to obtain the air fiber pad 2 attached with the breathable fabric layer 23.

[0130] Then, the air fiber pad 2 is attached to the inner cavity surface 121 by fitting the side surface of the air fiber pad 2 facing away from the head with the bottom surface of the limiting groove 33, and through the tension generated by the resilience of the fiber filaments 21 and the frictional force between it and the inner cavity surface 121. At the same time, the peripheral side of the air fiber pad 2 is in interference fit with the inner side wall of the limiting groove 33, so that the air fiber pad 2 is limited in the limiting groove 33.

[0131] The helmet provided by the present utility model for reducing the impact rotational force causes the wearer's head to slip relative to the helmet after a collision. This slip directly acts on the air fiber pad 2, which is composed of fiber filaments 21 and air gaps 22 and has a reticular disordered intertwined three-dimensional structure. It is equivalent to the air fiber pad 2 including thousands to tens of thousands of tiny springs, enabling the air fiber pad 2 to undergo elastic stretching under the action of the slip, thereby slowing down the sharp changes in the angular velocity and angular acceleration of the wearer's head, and further reducing the brain damage caused by the impact rotational force on the wearer's head and brain.

[0132] In addition, the limiting band 32, as a closed adjustment loop, is in direct contact with the user's head. Its inner circumference size can be adjusted by changing the pasted overlapping length of the second hook surface layer 3251 and the hair surface layer 3241, enabling the helmet to fit wearers with different head sizes, avoiding pinching the head due to mismatched helmet head shapes or looseness during helmet wearing and affecting its protective effect due to an oversized helmet, and improving the wearing versatility of the helmet.

[0133] Furthermore, the air fiber pad 2 has a low density, and the volume proportion of its air gaps 22 is relatively large, allowing air to flow freely through the gap between the air fiber pad 2 and the wearer's head in the inner cavity of the helmet, significantly reducing the stuffy feeling when wearing the helmet. At the same time, the air fiber pad 2 is not easy to absorb sweat or oil, so it is not easy to breed bacteria and is easy to clean, greatly improving the comfort of the wearer who uses the helmet for a long time and improving the hygiene conditions.

[0134] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Those of ordinary skill in the art should understand that any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A helmet for reducing collision rotational force, comprising a helmet body (1), characterized in that: The inner cavity surface (121) of the helmet body (1) is provided with a limiting structure (3), and the helmet further comprises: An air fiber mat (2), wherein the air fiber mat (2) is composed of fiber filaments (21) and air gaps (22), and the air fiber mat (2) is in a mesh-like disordered interwoven three-dimensional structure; The side surface of the air fiber pad (2) facing away from the head is in contact with the inner cavity surface (121), and is attached to the inner cavity surface (121) by the resilience of the fiber filaments (21) and the friction between the fiber filaments (21) and the inner cavity surface (121). The moving space of the air fiber pad (2) is limited by the limiting structure (3) cooperating with the air fiber pad (2) to prevent the air fiber pad (2) from falling off the inner cavity surface (121).

2. The helmet according to claim 1, characterized in that The limiting structure (3) comprises: A plurality of limit blocks (31) are arranged around the inner cavity surface (121) at intervals along the circumference of the helmet and surround a first accommodating space (H) matching the size of the air fiber pad (2); The air fiber pad (2) is attached to an inner cavity surface (121) located in the first accommodating space (H), and the periphery of the air fiber pad (2) is respectively abutted against each limit stopper (31), so that the air fiber pad (2) is limited in the first accommodating space (H).

3. The helmet according to claim 1, characterized in that The helmet body (1) comprises a helmet outer layer (11) and an inner buffer layer (12) applied on the inner surface of the helmet outer layer (11); the inner cavity surface (121) is the inner surface of the inner buffer layer (12) facing away from the helmet outer layer (11); and the inner cavity surface (121) is connected to the opening (13) of the helmet; The limiting structure (3) comprises: a plurality of position-limiting female buckles (326), the position-limiting female buckles (326) comprising a female buckle seat (3261) and a female buckle collar (3262) arranged at one end of the female buckle seat (3261); the position-limiting female buckle (326) is integrally formed and arranged in the inner buffer layer (12); the female buckle collar (3262) is exposed on the inner cavity surface (121); and the plurality of position-limiting female buckles (326) are arranged at intervals along the circumference of the helmet at the inner edge of the inner cavity surface (121) connected to the opening (13), and enclose a second accommodating space (I) matching the size of the air fiber pad (2); A limiting belt (32), wherein a plurality of positioning sub-buckles (323) matching the female buckle collar (3262) are arranged at intervals on one side of the limiting belt (32); The limiting belt (32) is extended around the circumference of the helmet and is arranged at the inner edge of the opening (13), and is connected to the inner cavity surface (121) through the corresponding cooperation of the positioning sub-buckle (323) and the female buckle collar (3262); The air fiber pad (2) is attached to the inner cavity surface (121) located in the second accommodating space (I), and the periphery of the air fiber pad (2) abuts against the limiting belt (32), so that the air fiber pad (2) is limited in the second accommodating space (I).

4. The helmet according to claim 1, characterized in that The helmet body (1) comprises a helmet outer layer (11) and an inner buffer layer (12) applied on the inner surface of the helmet outer layer (11); the inner cavity surface (121) is the inner surface of the inner buffer layer (12) facing away from the helmet outer layer (11); The limiting structure (3) is a limiting groove (33) provided on the inner cavity surface (121), and the shape of the limiting groove (33) matches the outer shape of the air fiber pad (2); The air fiber pad (2) is attached to the inner cavity surface (121) by having its side surface facing away from the head and fitting with the bottom surface of the limiting groove (33), and the air fiber pad (2) is limited in the limiting groove (33) by the peripheral side of the air fiber pad (2) and the inner side wall of the limiting groove (33).

5. The helmet according to claim 2, characterized in that The limiting structure (3) also includes: A connecting adhesive layer (314) is attached to the inner cavity surface (121) at a location matching the limit stopper (31); A first hook surface layer (313) is attached to a side of the connecting adhesive layer (314) facing away from the inner cavity surface (121); The limit stopper (31) comprises: Flexible lining (311); A stopper cloth cover (312) wrapped around the outer surface of the flexible lining (311); The limit stopper (31) is connected to the inner cavity surface (121) by cooperating with the flexible lining (311) and the first hook surface layer (313).

6. The helmet according to claim 3, characterized in that The starting end (324) of the limiting belt (32) surrounding the helmet is provided with a fleece surface layer (3241) on the side facing away from the inner cavity surface (121), and the ending end (325) of the limiting belt (32) surrounding the helmet is provided with a second hook surface layer (3251) on the side facing the inner cavity surface (121); The terminal end (325) is closed and connected to the starting end (324) by gluing the second hook surface layer (3251) and the fleece surface layer (3241). At this time, the limiting belt (32) directly contacts the user's head as a closed adjustment loop, and the inner circumference size of the adjustment loop can be adjusted by changing the overlapping length of the second hook surface layer (3251) and the fleece surface layer (3241).

7. The helmet according to claim 6, characterized in that The limiting belt (32) comprises: Flexible inner belt (321); A cloth belt cover (322) wrapped around the outer surface of the flexible inner belt (321); The positioning sub-button (323) comprises: A sub-button seat (3231) and a sub-button piercing nail (3232) arranged at one end of the sub-button seat (3231); The sub-buckle seat (3231) abuts against the outer side surface of the cloth belt sleeve (322) facing away from the inner cavity surface (121), and the sub-buckle pin (3232) passes through the corresponding pin hole (3221) provided in the cloth belt sleeve (322) to the inner side surface of the cloth belt sleeve (322) facing the inner cavity surface (121), and cooperates with the female buckle ring (3262).

8. A helmet according to any one of claims 1 to 7, characterized in that: The air fiber pad (2) has a breathable fabric layer (23) attached to the surface of the wearing side facing the head.

9. The helmet according to claim 8, characterized in that The air-permeable fabric layer (23) is connected to the air fiber pad (2) by heat pressing, ultrasonic wave, high frequency wave or gluing.

10. The helmet according to any one of claims 1 to 7, characterized in that: The fiber filaments (21) are in the form of solid or hollow tubes.

11. The helmet according to any one of claims 1 to 7, characterized in that: The density of the air fiber mat (2) is 30-120 g / L.

12. The helmet according to any one of claims 1 to 7, characterized in that: The fiber filaments (21) are made of POE, PE, TPEE or PP.

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