Anti-fragmentation top belt of safety helmet
Through the integrated injection molded safety helmet top belt design, combined with annular reinforcement ribs and weight-reducing holes, the problem of fragility in the traditional top belt is solved, and the improvement of chip resistance, breathability and comfort is achieved.
Patent Information
- Application Number
- CN202422151744.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Traditional safety helmet top straps are prone to breaking under low temperature impact, affecting protective performance, especially at the top strap position of the head, and the vent design increases this risk.
The integrated injection molded safety helmet top belt is designed to combine the annular reinforcement ribs with the weight reduction holes. The structural strength of the weight reduction holes is enhanced through the reinforcement ribs, and the connecting belt and the clamp are provided with reinforcement edges to improve impact resistance.
Effectively reduce the risk of top belt fragmentation, enhance protection performance, avoid crack spread, and improve comfort and breathability.
Smart Images
Figure CN223207921U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety helmets, in particular to an anti-fragmentation top strap of a safety helmet. Background Art
[0002] In the use of modern hard hats, in order to improve the cushioning and comfort, a top strap and an auxiliary wearing lining are often set inside the hat. The presence of the top strap provides a certain buffer space for the hard hat shell and the lining, providing soft support and impact resistance.
[0003] However, traditional safety helmet top straps are mostly one-piece plastic structures. Sometimes, in order to reduce the weight of the top strap and increase the breathability of the safety helmet top strap, ventilation holes are added to the safety helmet top strap. However, after adding ventilation holes, the top strap at the wearer's head often suffers from impact cracking. Especially during low-temperature impact performance tests, due to the increased low-temperature brittleness of the material, the safety helmet top strap is more likely to break, resulting in a reduction in the protective performance of the safety helmet. In view of this, in-depth research on the above-mentioned problems has led to the creation of this case. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides an anti-fragmentation top strap for a safety helmet, which solves the problems of the prior art.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a safety helmet anti-fragmentation top strap, comprising a top strap body, the top strap body being a substantially rectangular structure, a plurality of connecting straps integrally extending from the outer periphery of the top strap body, a plurality of clips being provided at the ends of the plurality of connecting straps, and a plurality of first weight-reducing holes being provided in a circular array on the top strap body;
[0006] A plurality of second weight-reducing holes are respectively opened on each of the connecting belts, and the plurality of second weight-reducing holes are arranged in a linear array;
[0007] The plurality of first weight-reducing holes are all circular holes, and a plurality of reinforcing ribs are protruding from the top sides of the plurality of first weight-reducing holes;
[0008] The reinforcing rib is an annular body extending integrally from the outer ring of the first lightening hole.
[0009] Preferably, the connection points between the plurality of connecting strips and the plurality of clamps are all provided with reinforcing ribs, and the thickness of the reinforcing ribs is greater than the thickness of the connecting strips.
[0010] Preferably, the top belt body, the clamping head, the connecting belt, the reinforcing ribs and the reinforcing edges are an integrally formed plate.
[0011] Preferably, the plurality of second weight-reducing holes are through holes with circular structures, and the diameters of the plurality of second weight-reducing holes are smaller than the diameters of the plurality of first weight-reducing holes.
[0012] Preferably, a plurality of snap-on points for connecting with the cap hoop are provided at the middle positions of the plurality of reinforcing ribs.
[0013] Preferably, the clamping head is a plate with a rectangular structure, a clamping slot is provided on the clamping head, and an end portion of the clamping head is provided with a slope extending to the clamping slot.
[0014] Beneficial effects
[0015] The utility model provides a shatter-resistant top strap for a safety helmet. The shatter-resistant top strap for a safety helmet has the following beneficial effects: The shatter-resistant top strap for a safety helmet is manufactured using an integrated injection molding process, resulting in easy processing and a simple structure. Weight-reducing holes are evenly distributed throughout the top strap, reducing structural weight and improving comfort. Furthermore, to reduce the risk of the top strap shattering, an annular reinforcement rib is provided at the weight-reducing hole located at the top of the top strap. The coordination of the annular reinforcement rib and the weight-reducing hole improves the peripheral structural strength of the weight-reducing hole, thereby enhancing protection, preventing shattering, and inhibiting crack propagation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the main structure of the anti-fragmentation top strap of a safety helmet described in the present invention.
[0017] Figure 2 This is a rear structural schematic diagram of the anti-fragmentation top strap of a safety helmet described in the present invention.
[0018] Figure 3 This is a schematic structural diagram of the assembly state of the anti-fragmentation top strap of a safety helmet described in the present invention.
[0019] In the figure: 1. Top strap body; 2. Connecting strap; 3. Clamp; 4. First weight-reducing hole; 5. Second weight-reducing hole; 6. Reinforcement rib; 7. Reinforcement edge; 8. Clamp-on hanging point. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] See also Figure 1-3The utility model provides an implementation scheme: In the use of modern safety helmets, plastic top straps are widely used due to their ease of use and production. However, there is a risk of breakage of the plastic top straps during use due to structural design or material problems. In order to reduce weight and save materials, conventional one-piece plastic top straps sometimes have weight-reducing grooves (holes) on the top straps. The presence of weight-reducing grooves (holes) reduces the mechanical properties of the material's impact resistance. Therefore, once an impact is suffered during use, the top straps may break. Not only does the safety helmet lose its protective function, but it is also prone to produce fragments that endanger the user.
[0022] In response to the above problems, the present application discloses an anti-fragmentation top strap of a safety helmet. The specific safety helmet top strap is formed by integrated injection molding. The safety helmet top strap is specifically composed of a top strap body 1, a clamping head 3, a connecting strap 2, a reinforcing rib 6 and a reinforcing edge 7. The top strap body 1 and the clamping head 3, the connecting strap 2, the reinforcing rib 6 and the reinforcing edge 7 are an integrally molded plate. The injection molding production is efficient and convenient, and the structure is simple.
[0023] According to the instruction manual Figure 1-3 It can be seen that the above-mentioned top strap main body 1 is a rectangular structure, and a number of connecting straps 2 are integrally extended from the outer circumference of the top strap main body 1. The several connecting straps 2 and the top strap main body 1 together constitute a soft support structure. A number of clips 3 are provided at the ends of the several connecting straps 2. When in use, the cap hoops connected by the split parts together constitute the lining of the safety helmet. The wearer wears it through the lining, and the lining and the safety helmet shell are connected by the clips 3, thereby forming a buffer space between the lining and the safety helmet shell.
[0024] Specifically, in order to reduce the weight of the top strap of the safety helmet and increase the air permeability at the same time, a number of first weight-reducing holes 4 are opened in a ring array on the above-mentioned top strap main body 1, and a number of second weight-reducing holes 5 are opened on the single connecting strap 2. The second weight-reducing holes 5 are arranged in a linear array. The setting of the first weight-reducing holes 4 and the second weight-reducing holes 5 can reduce the weight of the structure. Then, the first weight-reducing holes 4 and the second weight-reducing holes 5 are evenly distributed on the top strap of the safety helmet. In this way, when it is subjected to impact and fragmentation, part of the kinetic energy can be absorbed through the deformation of the position of the weight-reducing holes, thereby improving the cushioning performance.
[0025] However, due to the design of the weight-reducing slots (holes), although the cushioning, breathability and lightness of the structure are improved, it is prone to the problem of breaking during impact;
[0026] The structural distribution of the first and second lightening holes 4, 5 is such that the first lightening holes 4 are most directly subjected to impact forces and have minimal deformation space, making them most susceptible to breakage. The second lightening holes 5, on the other hand, can absorb kinetic energy through deformation, thus minimizing the risk of breakage.
[0027] In order to avoid the problem of the top strap being broken and endangering the human body, a plurality of reinforcing ribs 6 are protrudingly provided on the top sides of the plurality of first weight-reducing holes 4. The reinforcing ribs 6 are annular bodies extending integrally from the outer ring of the first weight-reducing holes 4. Due to the presence of the reinforcing ribs 6, the outer peripheral thickness of the first weight-reducing holes 4 is thickened, thereby strengthening the structural strength of the first weight-reducing holes 4. When subjected to impact, the possibility of cracking of the first weight-reducing holes 4 is reduced. Moreover, the plurality of first weight-reducing holes 4 are all circular holes. The hole positions of this structure conduct and disperse the force more evenly when subjected to impact, further reducing the possibility of fragmentation. Moreover, the presence of the first weight-reducing holes 4 and the second weight-reducing holes 5 ensures that even if the top strap of the helmet is broken, large fragments will not be produced due to the presence of the weight-reducing holes, thereby reducing the risk of human injury.
[0028] It should be noted that the reinforcing rib 6 is located on the back side of the wearer's head, facing the direction of external impact, in order to improve the impact resistance and the wearing comfort.
[0029] As a preferred solution, further, the connection points between several connecting straps 2 and several clamps 3 are provided with reinforcing ridges 7, and the thickness of the reinforcing ridges 7 is greater than the thickness of the connecting straps 2. When in use, the reinforcing ridges 7 play a role in enhancing the structural strength of the connection position between the connecting straps 2 and the clamps 3, thereby improving the overall impact resistance of the top strap of the safety helmet.
[0030] As a preferred solution, further, the plurality of second weight-reducing holes 5 are through holes with circular structures, and the diameters of the plurality of second weight-reducing holes 5 are smaller than the diameters of the plurality of first weight-reducing holes 4 .
[0031] As a preferred solution, further, a plurality of snap-on hanging points 8 are provided in the middle of the plurality of reinforcing edges 7 for connecting to the soft cap hoop of the safety helmet, and the two together constitute the inner lining of the safety helmet.
[0032] As a preferred solution, further, the clamping head 3 is a plate with a rectangular structure, a clamping slot is provided on the clamping head 3, and a slope angle is provided at the end of the clamping head 3 extending to the clamping slot. There is a matching connection point of the clamping head 3 on the safety helmet body, which is used to connect the safety helmet body and the safety helmet top strap.
[0033] From the above, it can be generally known that the anti-fragmentation top strap of the safety helmet adopts an integrated injection molding process, which is easy to process and has a simple structure. There are weight-reducing holes evenly distributed on the top strap of the safety helmet to reduce the weight of the structure and improve comfort. In order to reduce the risk of the top strap of the safety helmet, an annular reinforcement rib 6 is set on the weight-reducing hole position set at the top end of the top strap of the safety helmet. Through the coordination of the annular reinforcement rib 6 and the weight-reducing hole position, the peripheral structural strength of the weight-reducing hole position is improved, which plays a role in enhancing protection, avoiding fragmentation and inhibiting the spread of cracks.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A safety helmet anti-fragmentation top strap, comprising a top strap body (1), wherein the top strap body (1) is a rectangular structure, a plurality of connecting straps (2) are integrally extended from the outer periphery of the top strap body (1), and a plurality of clips (3) are provided at the ends of the plurality of connecting straps (2), characterized in that: The top belt body (1) is provided with a plurality of first weight-reducing holes (4) in a circular array; A plurality of second weight-reducing holes (5) are respectively provided on each of the connecting belts (2), and the plurality of second weight-reducing holes (5) are arranged in a linear array; The plurality of first weight-reducing holes (4) are all circular holes, and the top sides of the plurality of first weight-reducing holes (4) are protrudingly provided with a plurality of reinforcing ribs (6); The reinforcing rib (6) is an annular body integrally extending from the outer ring of the first lightening hole (4).
2. The anti-fragmentation top strap of a safety helmet according to claim 1, characterized in that: The connection points between the plurality of connecting belts (2) and the plurality of clamping heads (3) are all provided with reinforcing ribs (7), and the thickness of the reinforcing ribs (7) is greater than the thickness of the connecting belts (2).
3. The anti-fragmentation top strap of a safety helmet according to claim 2, characterized in that: The top belt body (1), the clamping head (3), the connecting belt (2), the reinforcing ribs (6) and the reinforcing edges (7) are an integrally formed plate.
4. The anti-fragmentation top strap of a safety helmet according to claim 3, characterized in that: The plurality of second weight-reducing holes (5) are through holes with circular structures, and the diameters of the plurality of second weight-reducing holes (5) are smaller than the diameters of the plurality of first weight-reducing holes (4).
5. The anti-fragmentation top strap of a safety helmet according to claim 4, characterized in that: A plurality of clamping and hanging points (8) are provided at the middle positions of the plurality of reinforcing edges (7).
6. The anti-fragmentation top strap of a safety helmet according to claim 5, characterized in that: The clamping head (3) is a plate with a rectangular structure. A clamping slot is provided on the clamping head (3). The end of the clamping head (3) is provided with a slope extending to the clamping slot.