CN211794563U - Ventilation block for safety helmet and safety helmet - Google Patents
Ventilation block for safety helmet and safety helmet Download PDFInfo
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- CN211794563U CN211794563U CN202020050299.2U CN202020050299U CN211794563U CN 211794563 U CN211794563 U CN 211794563U CN 202020050299 U CN202020050299 U CN 202020050299U CN 211794563 U CN211794563 U CN 211794563U
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Abstract
The utility model provides a ventilating block for safety helmet and a safety helmet, wherein the ventilating block comprises a ventilating block body, the ventilating block body is provided with a hole, and the upper opening of the hole is larger than the lower opening; the safety helmet comprises the air permeable block for the safety helmet with the characteristics and a safety helmet body, wherein the safety helmet body comprises a helmet shell, a helmet liner and a lace; the bottom surface of the lower hole of the breathable block body is connected with the cap shell, and a through hole matched with the lower hole is formed in the cap shell; according to the aerodynamic principle, airflow flows into the upper hole and flows out of the lower hole, the airflow is compressed, the pressure is increased, a pressure difference is generated, the flow speed of the airflow is accelerated, the temperature is reduced, and the airflow in the cap shell is increased.
Description
Technical Field
The utility model relates to a safety helmet technical field specifically is a ventilative piece and safety helmet for safety helmet.
Background
The existing safety helmet mainly comprises a helmet shell, a helmet liner and a lace, wherein the helmet shell is provided with a through hole to realize ventilation, the ventilation effect of the through hole is limited, and a large lifting space is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a safety helmet is with ventilative piece and safety helmet to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a ventilative piece and safety helmet for safety helmet, includes ventilative piece body, be provided with one or more hole on the ventilative piece body, be equipped with hole and hole under the hole on the hole and be equipped with ventilative piece body top surface hole area ratio on the hole ventilative piece body bottom surface hole mouth area is big under the hole.
As a further proposal of the utility model, the breathable block body is in a strip shape or a block shape, the bottom surface of the breathable block body is a plane and can also be a cambered surface of a safety helmet.
As the utility model discloses scheme further still, including the safety helmet body, be provided with cap shell, cap liner and frenulum on the safety helmet body, ventilative piece body can be the laminating or install on the cap shell, ventilative piece body with the cap shell can be integrated into one piece, be provided with on the cap shell with ventilative piece body bottom surface entrance to a cave matched with through-hole under the hole.
Compared with the prior art, the beneficial effects of the utility model are that:
the beneficial effects of the utility model can be known according to the statement to above-mentioned scheme, the hole on the ventilative piece, it is bigger than lower entrance to a cave to go up the entrance to a cave, according to the principle of aerodynamics, when the air current gets into from big last entrance to a cave from little lower entrance to a cave, the air current speed is slow pressure intensity is low when going up the entrance to a cave, through compressing, the speed accelerates pressure intensity when the air current comes out from lower entrance to increase, produced the pressure differential, and reduced the temperature, increased more air flow than only with the ventilative cap shell of through-hole the same size as lower entrance to it is more ventilative; therefore, the safety helmet with the ventilation block is more breathable than a common safety helmet with ventilation holes with the same size as the lower opening, especially, the air flow needs to be increased as much as possible in the worker safety helmet constructed outdoors in hot summer to increase cool air, the air flow is volatilized to generate sweat to bring cool feeling, the comfort is improved, sunstroke is reduced, and the novel implementation is very significant and effective.
Drawings
Fig. 1 is a schematic perspective view of the safety helmet of the present invention.
Fig. 2 is a schematic perspective view of the ventilation block for a safety helmet of the present invention.
FIG. 3 is a schematic cross-sectional view and a schematic illustration of the hole
In the figure: 1-a ventilation block body, 2-a hole upper hole, 3-a hole lower hole, 4-a safety helmet body, 5-a through hole, 6-a strip, 7-a hole, 8-a helmet shell and 9-an airflow.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a novel ventilative piece for safety helmet, the embodiment is shown in fig. 2, and it includes ventilative piece body 1, ventilative piece body 1 is a thick strip 6, be provided with a plurality of holes 7 on the strip 6, be equipped with on the hole 7 under hole 2 and the hole 3 in the hole, the last entrance to a cave 2 of hole 7 is than hole 7's lower entrance to a cave 3 is big, go up entrance to a cave 2 at the top surface of strip 6, entrance to a cave 3 is in the bottom surface of strip 6 down.
A novel safety helmet is disclosed, the specific embodiment is shown in figure 1, and the novel safety helmet comprises a strap 6 and a safety helmet body 4, wherein the safety helmet body 4 is provided with a helmet shell 8, a helmet liner and a tying belt; intercepting a section of the strip 6, pasting and attaching the bottom surface of the strip 6 on the hat shell 8, drilling a through hole 5 on the hat shell 8, and matching the size and the position of the through hole 5 with the lower hole 3.
The working principle is as follows: as shown in fig. 3, according to the aerodynamic principle, when the air flow 9 just flows into the upper hole 2, the flow velocity is low and the pressure is low, and when the air flow 9 enters the hole 7 and flows out of the lower hole 3, the air flow 9 is compressed, the flow velocity is increased, the pressure is increased, the air flow is increased and the temperature is reduced.
The above embodiment has a simple production process and reduces production cost, and other embodiments exist, such as the strap 6 is mounted on the cap shell 8, or the strap 6 and the cap shell 8 are integrally formed; in addition, the technical features of the present invention that are not described can be realized by the prior art, and are not described herein again. The present invention is not limited to the above embodiments, and variations, modifications, additions and substitutions made by those skilled in the art within the scope of the present invention shall fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a safety helmet is with ventilative piece, includes ventilative piece body (1), its characterized in that, be provided with one or more hole (7) on ventilative piece body (1), be equipped with entrance to a cave (2) and hole lower entrance to a cave (3) on hole (7) ventilative piece body (1) top surface entrance to a cave (2) area ratio on the hole ventilative piece body (1) bottom surface entrance to a cave (3) area is big under the hole.
2. The air permeable block for the safety helmet is characterized in that the air permeable block body (1) is in a strip shape or a block shape, and the bottom surface of the air permeable block body (1) is a plane and can also be a cambered surface which is attached to the safety helmet.
3. A safety helmet comprising the ventilation block as claimed in claim 1 or 2, characterized by comprising a safety helmet body (4), wherein a helmet shell (8), a helmet liner and a lace are arranged on the safety helmet body (4), the ventilation block body (1) can be attached or mounted on the helmet shell (8), the ventilation block body (1) and the helmet shell (8) can be integrally formed, and a through hole (5) matched with the hole lower hole (3) on the bottom surface of the ventilation block body (1) is arranged on the helmet shell (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050299.2U CN211794563U (en) | 2020-01-10 | 2020-01-10 | Ventilation block for safety helmet and safety helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050299.2U CN211794563U (en) | 2020-01-10 | 2020-01-10 | Ventilation block for safety helmet and safety helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211794563U true CN211794563U (en) | 2020-10-30 |
Family
ID=73050397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020050299.2U Active CN211794563U (en) | 2020-01-10 | 2020-01-10 | Ventilation block for safety helmet and safety helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211794563U (en) |
-
2020
- 2020-01-10 CN CN202020050299.2U patent/CN211794563U/en active Active
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| GR01 | Patent grant | ||
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