Safety helmet

Abstract

A safety helmet comprises an outer shell, an inner wall face of the outer shell defines a containing cavity with a bottom opening, and the containing cavity is used for allowing the head of a user to be placed in the containing cavity through the bottom opening; the elastic lining is located in the containing cavity, the outer side face of the lining faces the inner wall face of the shell, the lining and the inner wall face of the shell are restrained together, and the inner side face of the lining is used for facing the head of a user; the lining comprises an annular first part which is arranged on the circumferential side of the inner wall surface of the shell in the circumferential direction; the second part is arranged at the top of the inner wall surface of the shell and in the center of the first part, the second part and the first part are arranged at intervals to form an annular gap, and meanwhile, heat dissipation channels which are through inside and outside are distributed on the second part at intervals; an outer port of the heat dissipation channel is communicated with the annular gap through a gap between the outer side face of the second part and the inner wall face of the shell. According to the utility model, the external force impact resistance effect can be ensured, and the heat dissipation performance can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of head safety protection devices, and in particular relates to a safety helmet. Background Art

[0002] As a commonly used head safety protection product, a safety helmet generally includes an outer shell and an inner lining. For example, the structures disclosed in the Chinese utility model patent application number CN201020033129.X "A safety helmet with warning function" (authorization announcement number CN201733938U) and the Chinese utility model patent application number CN202120939784.X "A safety helmet and intelligent protection system for power construction" (authorization announcement number CN215189619U) are disclosed.

[0003] In order to ensure the protective performance of the helmet, the lining of the existing helmet is conventionally made of elastic EPS and EPP materials. When worn, the lining surrounds the user's head, causing the user's head to feel stuffy after wearing it for a long time, and the heat cannot be discharged in time. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a safety helmet which can ensure the effect of resisting external force impact and improve the heat dissipation performance in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a safety helmet, comprising:

[0006] The outer shell has an inner wall surface defining a receiving cavity with an open bottom, so that the user's head can be placed in the receiving cavity through the open bottom;

[0007] An elastic lining is located in the accommodating cavity, the outer side of the lining faces the inner wall of the outer shell and the two are bound together, and the inner side of the lining is used to face the head of the user;

[0008] It is characterized in that the lining comprises:

[0009] The first annular portion is circumferentially arranged on the circumferential side of the inner wall surface of the housing;

[0010] The second part is arranged at the top of the inner wall of the shell and the center of the first part, and is spaced apart from the first part to form an annular gap. At the same time, heat dissipation channels that penetrate inside and outside are spaced apart on the second part, and the outer port of the heat dissipation channel is connected to the annular gap through the gap between the outer side surface of the second part and the inner wall of the shell.

[0011] When the safety helmet is in use, the heat generated by the user's head can flow out through the heat dissipation channels in the second part of the inner lining, and flow through the gap between the outer side surface of the second part and the inner wall surface of the outer shell into the annular gap between the second part and the first component. The heat in the annular gap can be discharged to the outside through the wearing gap between the first part of the inner lining and the user's head, or can be discharged through the through hole on the outer shell that connects the annular gap and the outside, realizing effective heat dissipation. At the same time, in the present utility model, the cooperation of the first part and the second part of the inner lining can effectively protect the user's head, so that when the outer shell is impacted by an external force, the inner lining can reduce the force received by the impact through its own elastic deformation, ensuring the anti-external impact effect.

[0012] In the present utility model, through holes can be selectively arranged on the outer shell. When no through holes are provided, as described above, the heat in the annular gap is discharged to the outside through the wearing gap between the first part of the inner lining and the user's head.

[0013] Preferably, through holes are provided at positions corresponding to the annular gap on the outer shell to connect the annular gap and the outside. The design of the through holes can improve the heat dissipation effect, and since the through holes are arranged corresponding to the annular gap, that is, the through holes are located on the circumferential side of the outer shell, and the top of the outer shell is a solid structure without through holes, ensuring the protection effect of the safety helmet and preventing foreign objects from piercing the top of the safety helmet.

[0014] Preferably, a concave groove is provided on the outer side surface of the second part of the inner lining, so that a gap as described above is formed between the outer side surface of the second part of the inner lining and the inner wall surface of the outer shell.

[0015] In addition, the above-mentioned gap can also be formed by arranging convex ribs at intervals on the top of the inner wall surface of the outer shell, between the convex ribs and the outer side surface of the second part.

[0016] To improve the heat dissipation effect, further, the groove has at least two parts, one part is located between each adjacent two heat dissipation channels to connect the outer ports of each adjacent heat dissipation channel; the other part is located between the outer port of the heat dissipation channel and the edge of the outer side surface of the second part of the inner lining to connect the outer port of the heat dissipation channel and the annular gap.

[0017] Furthermore, there are multiple heat dissipation channels densely distributed in the second part of the inner lining, so that the second part of the inner lining is in a honeycomb shape.

[0018] Preferably, along the flowing direction of the air flow from inside to outside, a local part of the heat dissipation channel is a tapered section with a gradually decreasing cross-sectional flow area, and the part located downstream of the tapered section is an expanding section with a gradually increasing cross-sectional flow area. The tapered section is beneficial to accelerating the air flow passing through, and then uniformly discharging from the expanding section, which is beneficial to heat discharge.

[0019] In the above-mentioned various solutions, preferably, the thickness of the first part of the inner lining in the inner-outer direction is smaller than the thickness of the second part.

[0020] Preferably, the first part of the inner lining is formed by arranging at least two inner lining units circumferentially. In addition, the first part can also be an annular integral part.

[0021] Furthermore, the inner lining units are connected to each other by a circumferentially extending connecting ring.

[0022] Compared with the prior art, the advantages of the present utility model are as follows: By designing the inner lining to have a structure with a first part and a second part, when the safety helmet is in use, the heat generated by the user's head can flow out through the heat dissipation channels in the second part of the inner lining, and flow through the gap between the outer side surface of the second part and the inner wall surface of the outer shell to the annular gap between the second part and the first part. The heat in the annular gap can be discharged to the outside through the wearing gap between the first part of the inner lining and the user's head, or can be discharged through the through holes on the outer shell that communicate the annular gap with the outside, realizing effective heat dissipation. At the same time, the cooperation between the first part and the second part of the inner lining in the present utility model can effectively protect the user's head, so that when the outer shell is impacted by an external force, the inner lining can reduce the force received by the impact through its own elastic deformation, ensuring the anti-external impact effect. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the embodiment of the present utility model from another perspective;

[0025] Figure 3 is Figure 1 the bottom view of the safety helmet in

[0026] Figure 4 is Figure 3 the cross-sectional view taken along the A-A direction in

[0027] Figure 5 is a three-dimensional exploded view of the embodiment of the present utility model;

[0028] Figure 6 is a three-dimensional exploded view of the first part of the inner lining of the embodiment of the present utility model. Detailed Description of the Embodiment

[0029] The present utility model will be further described in detail below with reference to the embodiments of the drawings.

[0030] As Figures 1 to 6 shown, a preferred embodiment of a safety helmet of the present utility model is provided, and the safety helmet includes an outer shell 1 and an inner lining 2.

[0031] The inner wall surface of the outer shell 1 defines a receiving cavity 10 with an open bottom for the user's head to be placed in the receiving cavity 10 through the open bottom.

[0032] The inner lining 2 is made of elastic EPS material and includes a first part 21 and a second part 22.

[0033] The first part 21 is annular, and its annular outer side surface is circumferentially attached to the circumferential side of the inner wall surface of the outer shell 1, and its annular inner side surface is used to face the circumferential side of the user's head. In this embodiment, the first part 21 is formed by arranging four inner lining units 210 circumferentially. And the inner lining units 210 are connected to each other by a circumferentially extending connecting ring 211. For details, please refer to Figure 6 。

[0034] The outer side surface of the second part 22 is attached to the top of the inner wall surface of the outer shell 1 and the center of the first part 21. The inner side surface of the second part 22 is used to face the top of the user's head, and the second part 22 is arranged at an interval from the first part 21 to form an annular gap 20. A through hole 11 is provided at a position corresponding to the annular gap 20 on the outer shell 1 to communicate the annular gap 20 with the outside. And the thickness of the first part 21 of the inner lining 2 in the inner and outer directions is less than the thickness of the second part 22.

[0035] At the same time, the second part 22 is provided with a heat dissipation channel 220 that penetrates through the inside and outside. There are multiple heat dissipation channels 220 and they are densely distributed in the second part 22 so that the second part 22 as a whole is in a honeycomb shape. And the outer ports of the heat dissipation channels 220 are communicated with the annular gap 20 through the gap between the outer side surface of the second part 22 and the inner wall surface of the outer shell 1. In this embodiment, an inwardly concave groove 23 is provided on the outer side surface of the second part 22 so that the above-mentioned gap is formed between the outer side surface of the second part 22 of the inner lining 2 and the inner wall surface of the outer shell 1. And the groove 23 has two parts. One part is located between two adjacent heat dissipation channels 220 to communicate the outer ports of the adjacent heat dissipation channels 220; the other part is located between the outer port of the heat dissipation channel 220 and the edge of the outer side surface of the second part 22 of the inner lining 2 to communicate the outer port of the heat dissipation channel 220 with the annular gap 20. For details, please refer to Figure 4 、 5 。

[0036] In this way, when the safety helmet is in use, the heat generated by the user's head can flow out through the heat dissipation channels 220 in the second part 22, and flow through the gap between the outer side surface of the second part 22 and the inner wall surface of the outer shell 2 into the annular gap 20 between the second part 22 and the first component 21. The heat in the annular gap 20 can be discharged to the outside through the wearing gap between the first part 21 of the inner lining and the user's head, or can be discharged through the through holes 11 in the outer shell 1, realizing effective heat dissipation. And when the outer shell 1 is impacted, the inner lining 2 buffers the impact force through elastic deformation in the inner and outer directions.

[0037] Meanwhile, in this embodiment, along the flow direction of the air flow from the inside to the outside, a partial section of the heat dissipation channel 220 is a tapered section 221 with a gradually decreasing cross-sectional flow area, and the part located downstream of the tapered section 221 is an expansion section 222 with a gradually increasing cross-sectional flow area. The tapered section 221 is conducive to accelerating the air flow passing through, and then uniformly discharging it from the expansion section 222, which is conducive to heat dissipation.

Claims

1. A safety helmet, comprising: The housing (1) has an inner wall surface defining a receiving cavity (10) with an open bottom, so that the user's head can be placed in the receiving cavity (10) through the open bottom; An elastic lining (2) is located in the accommodating cavity (10), the outer side of the lining (2) faces the inner wall surface of the outer shell (1) and the two are bound together, and the inner side of the lining (2) is used to face the head of the user; Features The lining (2) comprises: An annular first portion (21) is arranged on the circumferential side of the inner wall surface of the housing (1) along the circumferential direction; The second part (22) is arranged at the top of the inner wall of the shell (1) and at the center of the first part (21), and is arranged at intervals with the first part (21) to form an annular gap (20). At the same time, the second part (22) is provided with heat dissipation channels (220) that penetrate inside and outside at intervals, and the outer port of the heat dissipation channel (220) is connected to the annular gap (20) through the gap between the outer side surface of the second part (22) and the inner wall of the shell (1).

2. The safety helmet according to claim 1, characterized in that: A through hole (11) is provided on the housing (1) at a position corresponding to the annular gap (20) so as to connect the annular gap (20) with the outside.

3. The safety helmet according to claim 2, characterized in that: An inwardly concave groove (23) is provided on the outer side surface of the second part (22) of the lining (2) so that the above-mentioned gap is formed between the outer side surface of the second part (22) of the lining (2) and the inner wall surface of the outer shell (1).

4. The safety helmet according to claim 3, characterized in that: The groove (23) has at least two parts, one part is located between each two adjacent heat dissipation channels (220) to connect the outer ports of each adjacent heat dissipation channel (220); the other part is located between the outer port of the heat dissipation channel (220) and the edge of the outer side surface of the second part (22) of the liner (2) to connect the outer port of the heat dissipation channel (220) and the annular gap (20).

5. The safety helmet according to claim 4, characterized in that: There are a plurality of heat dissipation channels (220) which are densely distributed in the second portion (22) of the inner liner (2), so that the second portion (22) of the inner liner (2) is in a honeycomb shape.

6. The safety helmet according to claim 1, characterized in that: Along the flow direction of the airflow from inside to outside, a part of the heat dissipation channel (220) is a tapered section (221) with a gradually decreasing flow area on a cross section, and a part located downstream of the tapered section (221) is an expansion section (222) with a gradually increasing flow area on a cross section.

7. The safety helmet according to any one of claims 1 to 6, characterized in that: The thickness of the first portion (21) of the lining (2) in the inner and outer directions is smaller than the thickness of the second portion (22).

8. The helmet according to any one of claims 1 to 6, characterized in that: The first part (21) of the liner (2) is composed of at least two liner units (210) arranged in a circumferential direction.

9. The safety helmet according to claim 8, characterized in that: The lining units (210) are connected via a circumferentially extending connecting ring (211).

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