Split assembly type breathable shock-absorbing safety cap headband

Abstract

This invention relates to the field of safety helmets, specifically to a split-assembly type breathable and shock-absorbing safety helmet top strap, comprising a top strap body, a connecting strap, a top strap connecting buckle, and a buckle body. The outer edge of the top strap body has a first connecting groove, and the top strap connecting buckle has a second connecting groove. A first end of the connecting strap passes through the first connecting groove, and a second end passes through the second connecting groove, with the first and second ends fixedly connected to form a closed-loop structure, thereby connecting the top strap body to the top strap connecting buckle. Furthermore, the buckle body is fixedly disposed on the outer side of the top strap connecting buckle. Multiple buckle bodies are included, comprising three types: front buckle, middle buckle, and rear buckle. Each buckle has a sleeve portion at one end. This split-assembly type breathable and shock-absorbing safety helmet top strap, through the cooperation of the shock-absorbing pad and the connecting strap, improves the breathability and comfort of the helmet top strap, preventing pressure pain on the head even after prolonged wear.

Description

Technical Field

[0001] This invention relates to the field of safety helmet technology, specifically to a split-assembly type breathable and shock-absorbing safety helmet top strap. Background Technology

[0002] The top strap is the core component of the helmet liner. It is mostly made of high-strength nylon and polyester webbing and plastic. It is divided into four-point and six-point support structures, connecting the helmet shell and the headband. It can maintain a buffer gap of 25-50 mm between the top of the head and the helmet shell. When impacted, it absorbs and disperses the impact force through the deformation of the webbing, while evenly distributing the pressure on the head and reserving ventilation space to ensure the stability of the entire liner structure.

[0003] Currently, top bands generally have many defects:

[0004] 1. Traditional webbing and plastic headbands have poor breathability, making them stuffy and hot to wear in high-temperature working conditions. They also lack shock-absorbing padding, which can easily cause pressure pain on the top of the head during long-term work.

[0005] 2. Traditional top belts are mostly one-piece structures, and their production and assembly processes are complicated. Summary of the Invention

[0006] The present invention provides a split-assembly type breathable and shock-absorbing helmet strap to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a split-assembly type breathable and shock-absorbing safety helmet top strap, comprising a top strap body, a connecting strap, a top strap connecting buckle, and a buckle body;

[0008] The outer edge of the top strap body is provided with a first connecting groove, and the top strap connecting buckle is provided with a second connecting groove. The first end of the connecting strap passes through the first connecting groove and the second end passes through the second connecting groove, and the first end and the second end are fixedly connected to form a closed loop structure, thereby connecting the top strap body and the top strap connecting buckle. In addition, the buckle body is fixedly disposed on the outside of the top strap connecting buckle.

[0009] The buckle body consists of multiple buckles, including three types: front buckle, middle buckle, and rear buckle. Each buckle has a sleeve portion at one end, which is used to fix it to the connecting strap. The other end of each buckle has a snap-fit ​​portion, which is used to snap-fit ​​and adapt to the fixing groove on the inner wall of the helmet shell.

[0010] Preferably, shock-absorbing pads are fixedly connected to both the upper and lower surfaces of the top belt body, and the shock-absorbing pads are made of breathable fabric wrapped around sponge.

[0011] Preferably, the top strap connecting buckle is strip-shaped, with symmetrically fixed outwardly extending connecting arms at both ends along its length. The end of each connecting arm is provided with a hook, which is used to engage and fix with the corresponding buckle hole on the helmet headband. The extension direction of the connecting arm avoids the buckle body.

[0012] Preferably, the outer side of the helmet headband is fixedly provided with a snap-fit ​​part, and the bottom of the snap-fit ​​part is fixedly connected to a chin strap.

[0013] Preferably, the snap-fit ​​part includes a snap-fit ​​strap and an I-shaped buckle. The bottom end of the snap-fit ​​strap is fixedly connected to the chin strap, and the bottom of the I-shaped buckle is fixedly connected to the helmet headband. The snap-fit ​​strap has an I-shaped groove, and the I-shaped buckle snaps into and fits into the I-shaped groove.

[0014] Preferably, the I-shaped buckle has a sliding groove inside, and an abutment buckle is slidably adapted inside the sliding groove. The top of the abutment buckle is pressed and adapted to the bottom of the buckling strap.

[0015] Preferably, the center of the top of the I-shaped buckle is provided with a threaded groove, and a screw is threadedly connected in the threaded groove. The bottom end of the screw is rotatably assembled with the abutment buckle through a bearing.

[0016] Preferably, the top of the abutment buckle has a slot, a column is slidably fitted in the slot, the column is fixedly installed on the outside of the helmet headband, and a column groove is formed at the top of the column, with an adjustment handle rotatably installed in the column groove.

[0017] Preferably, a first abutment is slidably adapted to the outer side of the column, a first damper is fixedly connected to the bottom of the first abutment, and a second abutment is fixedly connected to the end of the first damper away from the first abutment;

[0018] A limiting rod is inserted into the top of the first abutment plate, and the limiting rod is fixedly installed on the outside of the helmet headband.

[0019] Preferably, a second damper and a square frame are fixedly connected to the outer side of the helmet headband, and the top of the second damper is fixedly connected to the bottom of the second abutment plate;

[0020] The square frame is inserted inside the second damper.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The combination of shock-absorbing pads and connecting straps improves the breathability and comfort of the helmet strap, so that even after wearing it for a long time, it will not cause pressure pain on the head;

[0023] The traditional helmet strap is assembled into three parts, making production and assembly more convenient. The connecting buckles are made of plastic to ensure connection strength, while the shock-absorbing pads and connecting straps are made of breathable fabric, sponge and nylon to improve comfort.

[0024] 2. The chin strap uses an I-shaped slot and screw locking structure to achieve quick initial positioning and precise locking, effectively preventing the snap from loosening due to head shaking or collisions during operation, ensuring the stability of the chin strap, preventing the safety helmet from accidentally falling off, and improving safety protection during operation.

[0025] 3. This invention has a strong impact adaptive protection function. When the helmet is subjected to a strong impact, it can automatically trigger a secondary damping reinforcement locking effect to further fix the chin strap to prevent it from loosening. At the same time, the two-stage damping works together to buffer and absorb the impact force, greatly reducing the injury to the head and improving the helmet's impact protection capability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the external structure of a split-assembly type breathable and shock-absorbing safety helmet top strap according to the present invention.

[0027] Figure 2 This is a schematic diagram of the connection structure between the helmet top strap and the helmet headband of the present invention.

[0028] Figure 3 This is a three-dimensional structural diagram of the helmet strap of the present invention.

[0029] Figure 4 This is a schematic diagram of the structure of the helmet strap of the present invention.

[0030] Figure 5 This is an exploded view of the helmet strap of the present invention.

[0031] Figure 6 This is a schematic diagram of the connection structure between the snap-fit ​​strap and the I-shaped buckle of the present invention.

[0032] Figure 7 This is a cross-sectional structural diagram of the I-shaped buckle and the abutment interface of the present invention.

[0033] Figure 8 This is a schematic diagram of the connection structure between the screw and the I-shaped buckle of the present invention.

[0034] Figure 9 This is a schematic diagram of the connection structure between the damper and the abutment plate of the present invention.

[0035] Figure 10 This is a schematic diagram of the connection structure between the helmet top strap and the helmet shell of the present invention.

[0036] Figure 11This is a schematic diagram of the overall structure of the safety helmet of the present invention.

[0037] In the diagram: 1. Top strap body; 2. Shock-absorbing pad; 3. Connecting strap; 4. Top strap connecting buckle; 5. Buckle body; 6. Connecting arm; 7. First connecting groove; 8. Second connecting groove; 9. Helmet headband; 10. Snap-fit ​​part; 11. Chin strap; 12. Helmet shell; 13. Fixing groove;

[0038] 51. Front buckle; 52. Middle buckle; 53. Rear buckle;

[0039] 101. Snap-on strap; 102. I-shaped buckle; 103. Slide groove; 104. Abutment buckle; 105. Screw; 106. Straight post; 107. Adjusting handle; 108. Limiting rod; 109. First abutment plate; 110. First damping; 111. Second abutment plate; 112. Second damping; 113. Square frame. Detailed Implementation

[0040] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] The following is a reference appendix. Figures 1 to 11 Description of the split-assembly breathable and shock-absorbing helmet strap according to an embodiment of the present invention:

[0042] Reference Figure 3 and Figure 5 This invention provides a split-assembly type breathable and shock-absorbing safety helmet top strap, including: top strap body 1, connecting strap 3, top strap connecting buckle 4 and buckle body 5.

[0043] Specifically, the outer edge of the top belt body 1 is provided with six first connecting grooves 7, which are respectively located at the four corners and sides of the top belt body 1. The outer side of the top belt connecting buckle 4 is provided with a second connecting groove 8. The connecting belt 3 is an annular belt, with one end passing through the first connecting groove 7 and the other end passing through the second connecting groove 8, and then the two ends of the connecting belt 3 are fixedly connected to form a closed loop. The top belt body 1 and the top belt connecting buckle 4 are connected by the connecting belt 3, and the buckle body 5 is fixedly set on the outer side of the top belt connecting buckle 4.

[0044] For example, such as Figure 5As shown, there are six first connecting slots 7, distributed at the four corners and both sides of the top strap body 1, which can ensure the stability of the connection between the connecting strap 3 and the top strap body 1 and prevent displacement or loosening during wearing. The connecting strap 3 adopts a ring structure as the core connector, realizing a flexible and detachable connection between the top strap body 1 and the top strap connecting buckle 4, which facilitates the separate assembly and replacement of the top strap assembly.

[0045] The helmet top strap of this invention achieves a flexible connection between the top strap body 1 and the top strap connecting buckle 4 by setting the connecting strap 3 to pass through the first connecting groove 7 and the second connecting groove 8 and fix it to form a closed loop. The structure is simple, the connection is reliable, and it is easy to assemble, disassemble and maintain separately.

[0046] Some embodiments of the present invention are described with reference to Figure 4 and Figure 10 The buckle body 5 includes three types: front buckle 51, middle buckle 52 and rear buckle 53. One end of the front buckle 51, middle buckle 52 and rear buckle 53 is provided with a sleeve part, which is similar to a buckle structure and is fixed to the connecting strap 3 through the sleeve part. The other end is engaged with the fixing groove 13 on the inner wall of the safety helmet shell 12.

[0047] For example, such as Figure 4 As shown, two sets of front buckles 51, middle buckles 52, and rear buckles 53 are provided, symmetrically arranged on the outside of the top strap connecting buckles 4 along the central axis of the top strap body 1. Multiple sets of buckles are fixed in different areas, which can stably limit the top strap inside the shell, prevent the top strap from shaking or shifting inside the shell, and ensure the protective effect.

[0048] Some optional embodiments of the present invention are described below. Figure 2 and Figure 3 Both the top and bottom of the top strap body 1 are fixedly connected to shock-absorbing pads 2, which are made of breathable fabric wrapped around sponge. Thus, the shock-absorbing pad 2 adopts a composite structure of central breathable fabric wrapped around sponge. The breathable fabric can ensure air circulation between the head and the inside of the helmet, avoiding stuffiness during prolonged wear and improving wearing comfort; the internal sponge has good elastic cushioning performance, which can protect the top of the human head and the top of the inner cavity of the helmet shell 12 respectively, effectively absorbing the impact force generated by minor external impacts and reducing the shock to the head.

[0049] Some embodiments of the present invention are described with reference to Figure 1 , Figure 2 and Figure 3 The top strap connecting buckle 4 has symmetrical connecting arms 6 fixedly connected to both ends, and the connecting arms 6 are engaged and fixed to the helmet headband 9. Thus, the connecting arms 6 can further strengthen the connection strength between the top strap assembly and the helmet headband 9, ensuring the positioning stability of the top strap assembly within the helmet shell.

[0050] Specifically, there are two connecting arms 6 for the front and rear top strap connecting buckles 4, but only one is actually used when connected to the helmet headband 9, and the other is left unused. The reason for designing two is to reduce the types of materials during production on the production line.

[0051] Taking the front buckle 51 of the top strap connecting buckle 4 as an example, since there are two front top strap connecting buckles 4, and they are set up in a mirror symmetrical manner, when connecting with the helmet headband 9, the left front top strap buckle needs to use the left connecting arm 6 to connect with the helmet headband 9, while the right front top strap buckle needs to use the right connecting arm 6 to connect with the helmet headband 9. Therefore, when producing materials, it is necessary to design two independent front top strap buckles on the left and right, which would require two material code types. So now, a double connecting arm 6 is used, which can be used on either side, requiring only one material code type, reducing the complexity of material scheduling during production and simplifying the production process.

[0052] Some optional embodiments of the present invention are described below. Figure 1 and Figure 6 The helmet headband 9 is fitted with a snap-fit ​​part 10 on its outer side, and a chin strap 11 is fixedly fitted to the bottom of the snap-fit ​​part 10. Specifically, the snap-fit ​​part 10 includes a snap-fit ​​strap 101 and an I-shaped buckle 102. The bottom end of the snap-fit ​​strap 101 is fixedly connected to the chin strap 11, and the bottom of the I-shaped buckle 102 is fixedly connected to the helmet headband 9. The snap-fit ​​strap 101 has an I-shaped groove, and the I-shaped buckle 102 snaps into and fits into the I-shaped groove.

[0053] like Figure 6 As shown, the length of the top transverse groove of the I-shaped groove of the snap-fit ​​strap 101 is shorter than the length of the bottom transverse groove, which is adapted to the snap-fit ​​trajectory of the I-shaped buckle 102. During assembly, the transverse groove at the bottom of the I-shaped groove on the snap-fit ​​strap 101 is passed through the head of the I-shaped buckle 102, and then the snap-fit ​​strap 101 is pulled down so that the I-shaped buckle 102 is snapped into the transverse groove at the top of the I-shaped groove, thereby completing the initial positioning of the snap-fit ​​strap 101 and the I-shaped buckle 102, so as to realize the assembly of the snap-fit ​​part 10. The snap-fit ​​part 10 assembled in this way can realize the adjustable fixation between the chin strap 11 and the headband, and its overall structure is simple and easy to operate.

[0054] Some embodiments of the present invention are described with reference to Figure 6 and Figure 7 The I-shaped buckle 102 has a sliding groove 103 inside, and an abutment buckle 104 is slidably adapted inside the sliding groove 103. The top of the abutment buckle 104 is pressed and adapted to the bottom of the buckle band 101. The center part of the top of the I-shaped buckle 102 has a threaded groove, and a screw 105 is threadedly connected inside the threaded groove. The bottom end of the screw 105 is rotatably assembled with the abutment buckle 104 through a bearing.

[0055] Therefore, to prevent loosening after initial engagement, the screw 105 in the threaded groove at the top of the I-shaped buckle 102 is rotated forward. The screw 105 drives the abutment buckle 104 to move vertically upward along the slide groove 103 through the bottom bearing until the top of the abutment buckle 104 is tightly pressed and adhered to the bottom of the snap-fit ​​strap 101. At this time, the I-shaped buckle 102 and the abutment buckle 104 form a clamping and fixing structure, firmly limiting the snap-fit ​​strap 101 and effectively preventing the snap-fit ​​strap 101 from detaching from the I-shaped groove due to head shaking or operational collisions, thus ensuring the wearing stability of the chin strap 11.

[0056] Some optional embodiments of the present invention are described below. Figure 8 and Figure 9 A slot is provided at the top of the buckle 104, and a column 106 is slidably fitted in the slot. The column 106 is fixedly installed on the outside of the helmet headband 9. A column groove is provided at the top of the column 106, and an adjusting handle 107 is rotatably installed in the column groove.

[0057] Therefore, the abutment buckle 104 slides vertically along the straight post 106, and the straight post 106 guides and limits the movement trajectory of the abutment buckle 104 to ensure that the abutment buckle 104 moves smoothly and avoids deviation and misalignment.

[0058] Some embodiments of the present invention are described with reference to Figure 9 A first abutment 109 is slidably fitted on the outer side of the column 106. A first damper 110 is fixedly connected to the bottom of the first abutment 109, and a second abutment 111 is fixedly connected to the end of the first damper 110 away from the first abutment 109. A limit rod 108 is inserted into the top of the first abutment 109, and the limit rod 108 is fixedly installed on the outside of the safety helmet headband 9.

[0059] Some optional embodiments of the present invention are described below. Figure 9 , Figure 10 and Figure 11 The outer side of the helmet headband 9 is fixedly connected to a second damper 112 and a square frame 113. The top of the second damper 112 is fixedly connected to the bottom of the second abutment 111, and the square frame 113 is inserted inside the second damper 112.

[0060] Therefore, when the helmet is subjected to a strong external impact, the square frame 113 breaks under force, releasing the limiting constraint on the second damper 112; the second damper 112 quickly pops upward, pushing the second abutment 111 upward, thereby increasing the compressive force of the first damper 110 on the first abutment 109, and the compressive force of the first abutment 109 on the bottom of the abutment buckle 104, further strengthening the locking effect of the locking part 10, preventing the chin strap 11 from loosening during the impact, and at the same time, through the elastic buffer of the two-stage damping, effectively absorbing the impact force and reducing the injury to the head. The limiting rod 108 can limit the movement trajectory of the first abutment 109 to prevent it from deviating or misaligning. The second damper 112 remains stable under the guiding and limiting action of the square frame 113, and the second abutment 111 remains stationary in the normal wearing state; the first damper 110 releases elastic thrust, driving the first abutment 109 to move upward along the straight post 106 and fit tightly against the bottom of the abutment buckle 104, realizing the dynamic fit and matching between the abutment buckle 104 and the bottom of the snap strap 101, which can buffer the vibration caused by slight collisions, avoid wear and breakage of the abutment part due to hard friction, and extend the service life of the components.

[0061] Furthermore, the second damper 112 is a polyurethane spring elastomer. The transverse bar of the square frame 113 passes through the interior of the second damper 112 spring body and compresses and limits it. The square frame 113 is made of ABS engineering plastic with a critical impact force of 500N. At the same time, the square frame 113 is covered with a flexible anti-rupture mesh sleeve. After breakage, the fragments are wrapped by the mesh sleeve and will not fly.

[0062] The split-assembly breathable and shock-absorbing helmet top strap of this invention features a connecting strap 3 for flexible and detachable connection between the top strap body 1 and the top strap connecting buckle 4, facilitating split assembly. Multiple sets of buckles (front buckle 51, middle buckle 52, and rear buckle 53) engage with the helmet shell fixing groove 13 to achieve stable positioning of the top strap assembly. A breathable fabric-wrapped sponge structure for the shock-absorbing pad 2 balances breathability and comfort with cushioning protection. The I-shaped buckle 102 of the engaging part 10 engages with the I-shaped groove to achieve proper connection between the chin strap 11 and the helmet shell fixing groove. The helmet band features rapid positioning; a screw 105 drives the abutment buckle 104 to clamp and fix the chin strap 101, preventing loosening; a two-stage damping buffer and impact self-locking structure consisting of a first damper 110, a second damper 112, and a square frame 113 achieves both comfortable cushioning for daily wear and automatic enhanced locking effect during strong impacts. This effectively solves the technical problems of poor wearing comfort, insufficient connection stability, and easy loosening of the chin strap 11 during impacts in existing safety helmets, thus improving the overall protective performance and service life of the safety helmet.

[0063] The working principle of this invention: During the assembly of the top strap assembly, a ring-shaped connecting strap 3 is used as the core connector. One end of the connecting strap 3 passes through the first connecting groove 7 on the outer edge of the top strap body 1, and the other end passes through the second connecting groove 8 on the outer side of the top strap connecting buckle 4. After the connection is completed, the two ends of the connecting strap 3 are fixedly connected to form a closed loop structure, realizing a flexible and detachable connection between the top strap body 1 and the top strap connecting buckle 4. Six first connecting grooves 7 are provided, distributed at the four corners and both sides of the top strap body 1, ensuring the stability of the connection between the connecting strap 3 and the top strap body 1 and preventing displacement or loosening during wear.

[0064] Shock-absorbing pads 2 are fixedly installed at the top and bottom of the top strap body 1. The shock-absorbing pads 2 adopt a composite structure with a central breathable fabric wrapped around a sponge. The breathable fabric can ensure air circulation between the head and the inside of the helmet, avoid the feeling of stuffiness caused by wearing for a long time, and improve wearing comfort. The internal sponge has good elastic cushioning performance and can protect the top of the human head and the top of the inner cavity of the helmet shell 12 respectively, effectively absorbing the impact force generated by minor external impacts and reducing the shock to the head.

[0065] The buckle body 5 is divided into three types: front buckle 51, middle buckle 52, and rear buckle 53. Two sets of each type are provided, symmetrically arranged on the outside of the top strap connecting buckle 4 along the central axis of the top strap body 1. One end of each type of buckle is sleeved and fixed to the connecting strap 3, while the other end can precisely engage with the pre-set fixing groove 13 on the inner wall of the helmet shell 12. Multiple sets of buckles are fixed in different areas, which can stably limit the top strap assembly inside the helmet shell, preventing the top strap from shaking or shifting inside the shell and ensuring the protective effect. At the same time, the connecting arms 6, symmetrically fixed at both ends of the top strap connecting buckle 4, can engage and fix with the helmet headband 9, further strengthening the connection strength between the top strap assembly and the helmet.

[0066] During the locking stage of the chin strap 11 and the helmet headband, adjustable fixation is achieved through the snap-fit ​​part 10. The snap-fit ​​part 10 consists of a snap-fit ​​strap 101 and an I-shaped buckle 102. The I-shaped buckle 102 is fixedly connected to the helmet headband 9, and the bottom end of the snap-fit ​​strap 101 is fixedly connected to the chin strap 11. It has an I-shaped groove, the length of the horizontal groove at the top of the I-shaped groove is shorter than the length of the horizontal groove at the bottom, which is adapted to the snap-fit ​​trajectory of the I-shaped buckle 102. During assembly, the horizontal groove at the bottom of the I-shaped groove of the snap-fit ​​strap 101 is passed through the head of the I-shaped buckle 102, and then the snap-fit ​​strap 101 is pulled down so that the I-shaped buckle 102 is snapped into the horizontal groove at the top of the I-shaped groove, completing the initial positioning of the snap-fit ​​strap 101 and the I-shaped buckle 102.

[0067] To prevent loosening after initial engagement, the locking adjustment mechanism is activated: The screw 105 in the threaded groove at the top of the I-shaped buckle 102 is rotated forward. The screw 105 drives the abutment buckle 104 vertically upward along the slide groove 103 via the bottom bearing until the top of the abutment buckle 104 is tightly pressed against the bottom of the chin strap 101. At this point, the I-shaped buckle 102 and the abutment buckle 104 form a clamping and fixing structure, firmly limiting the chin strap 101 and effectively preventing it from detaching from the I-shaped groove due to head movement or operational collisions, thus ensuring the wearing stability of the chin strap 11.

[0068] The abutment buckle 104 has a slot at its top, which moves vertically upward along the slotted post 106. Simultaneously, the second damper 112 remains stable under the guiding and limiting action of the square frame 113, while the second abutment plate 111 remains stationary. The first damper 110 releases elastic thrust, driving the first abutment plate 109 upward along the slotted post 106 to tightly fit against the bottom of the abutment buckle 104. This achieves a dynamic fit between the abutment buckle 104 and the bottom of the snap-fit ​​tape 101, buffering vibrations from minor collisions and preventing wear and breakage at the abutment point due to hard friction, thus extending the service life of the components.

[0069] When the helmet is subjected to a strong external impact, the square frame 113 breaks under stress, releasing the limiting constraint on the second damper 112. The second damper 112 quickly pops upward, pushing the second abutment 111 upward, thereby increasing the compressive force of the first damper 110 on the first abutment 109, and the compressive force of the first abutment 109 on the bottom of the abutment buckle 104, further strengthening the locking effect of the locking part 10, preventing the chin strap 11 from loosening during the impact. At the same time, the elastic buffering of the two-stage damping effectively absorbs the impact force and reduces the injury to the head. In addition, the limiting rod 108 can limit the movement trajectory of the first abutment 109 to prevent it from deviating or misaligning.

[0070] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A split-assembly type breathable and shock-absorbing safety helmet strap, characterized in that, Includes the top strap body, connecting strap, top strap connecting buckle, and buckle body; The outer edge of the top belt body is provided with a first connecting groove, and the top belt connecting buckle is provided with a second connecting groove. The first end of the connecting belt passes through the first connecting groove and the second end passes through the second connecting groove, and the first end and the second end are fixedly connected to form a closed loop structure, thereby connecting the top belt body and the top belt connecting buckle. In addition, the buckle body is fixedly disposed on the outside of the top belt connecting buckle. The buckle body consists of multiple buckles, including three types: front buckle, middle buckle, and rear buckle. Each buckle has a sleeve portion at one end, which is used to fix it to the connecting strap. The other end of each buckle has a snap-fit ​​portion, which is used to snap-fit ​​and adapt to the fixing groove on the inner wall of the helmet shell.

2. The split-assembly breathable and shock-absorbing helmet strap according to claim 1, characterized in that: Both the upper and lower surfaces of the top belt body are fixedly connected with shock-absorbing pads, which are made of breathable fabric wrapped around sponge.

3. The split-assembly type breathable and shock-absorbing helmet strap according to claim 1, characterized in that: The top strap connecting buckle is strip-shaped, with symmetrically fixed outward extending connecting arms at both ends along its length. The end of each connecting arm is provided with a hook, which is used to engage and fix with the corresponding buckle hole on the helmet headband. The extension direction of the connecting arm avoids the buckle body.

4. The split-assembly type breathable and shock-absorbing helmet strap according to claim 3, characterized in that: The helmet headband has a snap-fit ​​part fixedly installed on the outside, and a chin strap is fixedly connected to the bottom of the snap-fit ​​part.

5. The split-assembly type breathable and shock-absorbing helmet strap according to claim 4, characterized in that: The snap-fit ​​part includes a snap-fit ​​strap and an I-shaped buckle. The bottom end of the snap-fit ​​strap is fixedly connected to the chin strap, and the bottom of the I-shaped buckle is fixedly connected to the helmet headband. The snap-fit ​​strap has an I-shaped groove, and the I-shaped buckle snaps into and fits into the I-shaped groove.

6. The split-assembly type breathable and shock-absorbing safety helmet strap according to claim 5, characterized in that: The I-shaped buckle has a sliding groove inside, and an abutment buckle is slidably adapted inside the sliding groove. The top of the abutment buckle is pressed and adapted to the bottom of the buckling strap.

7. The split-assembly type breathable and shock-absorbing helmet strap according to claim 6, characterized in that: The center of the top of the I-shaped buckle is provided with a threaded groove, and a screw is threadedly connected in the threaded groove. The bottom end of the screw is rotatably assembled with the buckle through a bearing.

8. The split-assembly type breathable and shock-absorbing safety helmet strap according to claim 6, characterized in that: The top of the buckle has a slot, and a post is slidably fitted in the slot. The post is fixedly installed on the outside of the helmet headband. The top of the post has a cylindrical groove, and an adjustment handle is rotatably installed in the cylindrical groove.

9. A split-assembly type breathable and shock-absorbing safety helmet strap according to claim 8, characterized in that: The outer side of the column is slidably fitted with a first abutment plate, the bottom of the first abutment plate is fixedly connected with a first damper, and the end of the first damper away from the first abutment plate is fixedly connected with a second abutment plate. A limiting rod is inserted into the top of the first abutment plate, and the limiting rod is fixedly installed on the outside of the helmet headband.

10. A split-assembly type breathable and shock-absorbing safety helmet strap according to claim 9, characterized in that: The outer side of the helmet headband is fixedly connected to a second damper and a square frame, and the top of the second damper is fixedly connected to the bottom of the second abutment. The square frame is inserted inside the second damper.

Images