Safety helmet

Abstract

The safety helmet comprises a helmet body, an inner container, a lining and a ventilation piece, and the helmet body is provided with an inner cavity and a ventilation opening; the inner container is arranged on the helmet body and located in the inner cavity, the inner container and the cavity wall of the inner cavity are arranged in a spaced mode to form a ventilation flow channel, the inner container is provided with an installation through opening, and the installation through opening and the ventilation opening are both communicated with the ventilation flow channel; the lining is arranged in the inner container and located on the side, away from the ventilation flow channel, of the inner container; the ventilation piece is arranged at the mounting port and is provided with an air inlet part and an air outlet part, the air inlet part is arranged towards the ventilation flow channel, and the air outlet part is arranged towards the lining. Compared with the prior art, the safety helmet can drive the airflow to flow through the ventilation piece so as to cool the lining, so that the head of a worker is cooled, and the cooling effect on the head of the worker is ensured.

Description

Technical Field

[0001] This application relates to the technical field of personal protective equipment, and in particular to a safety helmet. Background Technology

[0002] When performing electrical work, workers need to wear safety helmets. In high-temperature environments, poor air circulation inside the helmet can easily lead to a stuffy feeling, causing workers to lose concentration and make mistakes, which can then lead to electrical safety accidents. Traditionally, a reflective coating is sprayed on the outer surface of the safety helmet to reflect sunlight and prevent workers from feeling stuffy. However, safety helmets are easily bumped and knocked during transportation or use, causing the reflective coating on the outer surface of the helmet to peel off, thus affecting the cooling effect of the helmet. Utility Model Content

[0003] Therefore, it is necessary to provide a safety helmet that addresses the problem that the reflective coating on the outer surface of the helmet is prone to peeling off, thus affecting the helmet's cooling effect, in traditional technologies.

[0004] The technical solution is as follows:

[0005] One embodiment provides a safety helmet, including:

[0006] A helmet body having an inner cavity and ventilation openings;

[0007] The inner liner is disposed in the helmet body and located in the inner cavity. The inner liner and the cavity wall of the inner cavity are spaced apart to form a ventilation channel. The inner liner has an installation port, and both the installation port and the ventilation port are connected to the ventilation channel.

[0008] A liner, the liner being disposed within the inner liner and located on the side of the inner liner away from the ventilation channel; and,

[0009] A ventilation component is provided at the mounting opening and has an air inlet and an air outlet, the air inlet being disposed toward the ventilation channel and the air outlet being disposed toward the lining.

[0010] After the worker puts on the aforementioned safety helmet, their head comes into contact with the inner lining. The ventilation channel is connected to the outside through the vent. When the ventilation system is running, the outside airflow enters the ventilation channel through the vent. The airflow in the ventilation channel then passes through the air inlet and air outlet and flows toward the inner lining to cool it down, thereby cooling the worker's head. Compared with traditional technology, the aforementioned safety helmet can use the ventilation system to drive airflow to cool the inner lining and thus cool the worker's head, ensuring a cooling effect on the worker's head.

[0011] In one embodiment, the ventilation component includes a mounting base and a fan. The mounting base is disposed at the mounting opening and has an air inlet and an air outlet. The air inlet has an air inlet, and the air outlet has an air outlet. The air inlet and the air outlet communicate with each other. The fan is rotatably disposed on the mounting base, and the rotation axis of the fan is parallel to the direction of the air inlet toward the air outlet.

[0012] In one embodiment, the safety helmet further includes a power mechanism disposed on the helmet body and electrically connected to the fan, the power mechanism being used to provide power for the rotation of the fan.

[0013] In one embodiment, the power mechanism includes a mounting compartment and a battery. The mounting compartment is located in the helmet body and has a mounting cavity. The battery is located in the mounting cavity and is electrically connected to the fan.

[0014] In one embodiment, the safety helmet further includes a temperature sensor disposed between the liner and the inner liner, and the temperature sensor is electrically connected to the power mechanism.

[0015] In one embodiment, at least two mounting ports are provided, and at least two ventilation components are provided and are configured to correspond one-to-one with the mounting ports.

[0016] In one embodiment, the safety helmet further includes a reinforcement mechanism disposed within the inner liner.

[0017] In one embodiment, the reinforcing mechanism includes at least two first reinforcing ribs and at least two second reinforcing ribs, all of the first reinforcing ribs being parallel and spaced apart along the transverse direction of the inner liner, and all of the second reinforcing ribs being parallel and spaced apart along the longitudinal direction of the inner liner.

[0018] In one embodiment, the safety helmet further includes a cushioning layer disposed within the ventilation channel.

[0019] In one embodiment, the inner liner has a vent hole that is connected to the ventilation channel. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the external structure of a safety helmet in one embodiment of this application.

[0022] Figure 2 This is a top view of a safety helmet according to one embodiment of this application.

[0023] Figure 3 This is a top view of the inner liner in one embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the inner liner structure in one embodiment of this application.

[0025] Figure 5 This is a cross-sectional view of a safety helmet according to one embodiment of this application.

[0026] Attached image annotations:

[0027] 100. Helmet body; 110. Inner cavity; 120. Ventilation opening; 200. Inner liner; 210. Breathing hole; 300. Liner; 400. Ventilation component; 410. Mounting base; 420. Fan; 500. Reinforcing mechanism; 510. First reinforcing rib; 520. Second reinforcing rib; 600. Power mechanism; 700. Buffer layer; 800. Composite coating; 900. Ventilation channel. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] Please see Figures 1 to 4One embodiment of this application provides a safety helmet, including a helmet body 100, an inner liner 200, an inner lining 300, and a ventilation component 400. The helmet body 100 has an inner cavity 110 and a ventilation opening 120. The inner liner 200 is disposed in the helmet body 100 and located within the inner cavity 110. The inner liner 200 and the cavity wall of the inner cavity 110 are spaced apart to form a ventilation channel 900. The inner liner 200 has an installation opening, and both the installation opening and the ventilation opening 120 are connected to the ventilation channel 900. The inner lining 300 is disposed in the inner liner 200 and located on the side of the inner liner 200 away from the ventilation channel 900. The ventilation component 400 is disposed in the installation opening and has an air inlet and an air outlet. The air inlet is disposed towards the ventilation channel 900, and the air outlet is disposed towards the inner lining 300.

[0035] After the worker puts on the aforementioned safety helmet, their head comes into contact with the inner liner 300. The ventilation channel 900 is connected to the outside through the vent 120. When the ventilation component 400 is running, the outside airflow enters the ventilation channel 900 through the vent 120. The airflow in the ventilation channel 900 then passes through the air inlet and air outlet in sequence and flows towards the inner liner 300 to cool the inner liner 300, thereby cooling the worker's head. Compared with traditional technology, the aforementioned safety helmet can use the ventilation component 400 to drive the airflow to cool the inner liner 300, thereby cooling the worker's head and ensuring a cooling effect on the worker's head.

[0036] Furthermore, when the aforementioned safety helmet is bumped or knocked during transportation or use, the helmet body 100 can protect the ventilation component 400 inside the inner cavity 110, preventing the ventilation component 400 from being damaged by the impact and improving the service life of the safety helmet.

[0037] Optionally, the vent 120 can be a strip vent, a circular vent, or a vent 120 of other shapes; no specific limitation is made here.

[0038] Please see Figure 1 In one embodiment, the vent 120 is a strip-shaped vent, which prevents external impurities from entering the ventilation channel 900 while ensuring the flow rate of air entering the ventilation channel 900.

[0039] Please see Figure 1 In one embodiment, the vent 120 is provided with at least two to ensure the flow rate of air entering the ventilation channel 900.

[0040] In one embodiment, the liner 300 is made of cotton material, which not only improves the comfort of workers wearing safety helmets, but also provides ventilation to further cool the workers' heads.

[0041] Furthermore, the cotton lining 300 also has antibacterial and moisture-wicking properties, thus ensuring the hygiene of staff when wearing it for extended periods.

[0042] In other embodiments, the lining 300 is primarily made of a composite layer structure of high-density foam and pure cotton fabric, which combines softness and sweat absorption to enhance wearing comfort.

[0043] Optionally, the ventilation component 400 can be a duct, an exhaust fan, or other components, without specific limitations.

[0044] Please see Figure 3 In one embodiment, the ventilation component 400 includes a mounting base 410 and a fan 420. The mounting base 410 is located at the mounting opening and has an air inlet and an air outlet. The air inlet has an air inlet and the air outlet has an air outlet. The air inlet and the air outlet are connected. The fan 420 is rotatably mounted on the mounting base 410, and the rotation axis of the fan 420 is parallel to the direction from the air inlet toward the air outlet.

[0045] The mounting base 410 is located at the mounting opening. When the fan 420 on the mounting base 410 rotates, it can guide the airflow in the ventilation channel 900 from the air inlet to the air outlet, thereby cooling the lining 300. The implementation process is simple and the manufacturing cost is low.

[0046] Further, please refer to Figure 3 The mounting base 410 has a flat quadrangular prism structure. The air inlet and air outlet are arranged through the two ends of the mounting base 410. The fan 420 is located between the air inlet and the air outlet to guide the airflow from the air inlet to the air outlet.

[0047] In one embodiment, the fan 420 is a small, electronically powered, low-power fan 420 to achieve convective heat exchange inside the safety helmet, which saves more power and ensures the safety helmet's battery life.

[0048] Please see Figure 2 In one embodiment, the safety helmet also includes a power mechanism 600, which is disposed on the helmet body 100 and electrically connected to the fan 420. The power mechanism 600 is used to provide power for the rotation of the fan 420.

[0049] The power mechanism 600 provides power to the rotation of the fan 420 to ensure that the fan 420 can rotate normally.

[0050] Optionally, the power mechanism 600 can be a component such as a motor or battery that can convert electrical energy into kinetic energy to power the fan. No specific limitation is made here.

[0051] In one embodiment, the power mechanism 600 includes a mounting compartment and a battery. The mounting compartment is located on the helmet body 100 and has a mounting cavity. The battery is located in the mounting cavity and is electrically connected to the fan 420.

[0052] The mounting compartment protects the battery inside the mounting cavity, preventing external environmental factors from affecting the battery's power supply to the fan 420.

[0053] Furthermore, the continuous power supply to the fan 420 can be ensured by replacing the battery in the installation compartment, making it convenient to use.

[0054] In one embodiment, the mounting cavity is made of high-strength ABS material and provides IP67-level waterproof protection for the battery inside the mounting cavity.

[0055] Furthermore, the installation compartment is located at the rear of the helmet body 100 (that is, the back of the worker wearing the safety helmet). The power cord of the fan 420 is connected to the installation compartment and electrically connected to the battery. The interface is protected with adhesive.

[0056] In one embodiment, the safety helmet also includes a temperature sensor (not shown) located between the liner 300 and the inner liner 200, and electrically connected to the power mechanism 600.

[0057] The temperature sensor monitors the temperature of the safety helmet. When the temperature sensor detects that the temperature of the safety helmet is higher than the preset value, it sends a signal to the power mechanism 600, which then supplies power to the fan 420 to make the fan 420 rotate, thereby cooling the worker's head. When the temperature sensor detects that the temperature of the safety helmet is lower than the preset value, it sends a signal to the power mechanism 600, which then stops supplying power to the fan 420, and the fan 420 stops rotating. This setting can save energy of the power mechanism 600 while ensuring the cooling effect and improving the battery life.

[0058] For example, when the temperature sensor detects a temperature T≥28℃, the fan 420 enters high-power mode. When the temperature sensor detects a temperature 22℃<T<28℃, it enters energy-saving mode, at which time the fan 420 runs at 30~70% of its maximum speed. When the temperature T≤22℃, the fan 420 is turned off.

[0059] Please see Figure 3 In one embodiment, at least two installation ports are provided, and at least two ventilation components 400 are provided and are configured to correspond one-to-one with the installation ports.

[0060] At least two ventilation elements 400 can improve the uniformity of cooling effect and further enhance the wearing comfort of the safety helmet.

[0061] Furthermore, a snap fastener is provided at the installation opening, and the mounting base 410 of the ventilation component 400 is provided with a snap-fit ​​part for engaging with the snap fastener to realize the installation of the ventilation component 400.

[0062] In other embodiments, the mounting base 410 may also be attached to the mounting opening by means of adhesive bonding, which will not be described in detail here.

[0063] Optionally, the mounting base 410 can be inserted through the mounting opening or located on one of the opening sides of the mounting opening; no specific limitation is made here.

[0064] Please see Figure 4 In one embodiment, the safety helmet also includes a reinforcement mechanism 500 disposed in the inner liner 200.

[0065] The reinforcement mechanism 500 can increase the strength of the inner liner 200, improving the safety of wearing the helmet.

[0066] Optionally, the reinforcing mechanism 500 can be a hemispherical reinforcing sleeve covering the inner liner 200, or a reinforcing rib or other component; no specific limitation is made here.

[0067] Please see Figure 4 In one embodiment, the reinforcing mechanism 500 includes at least two first reinforcing ribs 510 and at least two second reinforcing ribs 520. All the first reinforcing ribs 510 are arranged parallel to each other and spaced apart along the transverse direction of the inner liner 200, and all the second reinforcing ribs 520 are arranged parallel to each other and spaced apart along the longitudinal direction of the inner liner 200.

[0068] This design improves the inner liner 200's compressive strength in both the lateral and longitudinal directions, enhances its overall strength, and is lightweight, thus not compromising the comfort of wearing the helmet.

[0069] For explanation, the lateral direction of the inner liner 200 is perpendicular to the direction in which the worker moves forward after wearing the safety helmet (i.e.) Figure 4 (Direction A in the diagram), the longitudinal direction of the inner liner 200 is parallel to the direction in which the worker moves forward after wearing the safety helmet (i.e., Figure 4 (direction B in the middle).

[0070] In one embodiment, the reinforcing rib has a width of 3 mm and a height of 0.5 mm.

[0071] Furthermore, the reinforcing ribs not only strengthen the inner liner 200 but also increase its heat exchange area, further improving the cooling effect on the workers' heads.

[0072] Please see Figure 5In one embodiment, the safety helmet also includes a cushioning layer 700 disposed within a ventilation channel 900.

[0073] The buffer layer 700 can cushion the impact force received by the safety helmet to protect the worker's head and further improve the protective performance of the safety helmet.

[0074] Furthermore, the buffer layer 700 has an air duct corresponding to the installation opening to ensure that airflow can pass through the air duct into the ventilation component 400 and cool the inner lining 300.

[0075] In one embodiment, the buffer layer 700 is mainly made of a composite phase change material composed of a solid-liquid phase change material and a highly thermally conductive inorganic material.

[0076] Furthermore, the composite phase change material is mainly sodium sulfate decahydrate, and the precursor is sodium silicate. The preparation process of buffer layer 700 is as follows: An appropriate amount of anhydrous sodium sulfate is placed in a beaker, dissolved in deionized water, and ultrasonically dispersed in an ultrasonic cleaner for 30 minutes to obtain a saturated sodium sulfate solution. In another beaker, cyclohexane and n-butanol are added in a 5:1 ratio, and stirred at 2200 rpm / min using a mechanical stirrer. An appropriate amount of saturated sodium sulfate solution is added, and the mixture is stirred at high speed for 1 hour. Sulfuric acid solution is then added dropwise to the mixture to adjust the pH to 2.8-3.5, and stirring continues for 3 hours to obtain a white emulsion. An appropriate amount of sodium silicate is placed in a beaker, dissolved in deionized water, and stirred continuously for 1 hour to obtain a watery transparent liquid. Using a peristaltic pump, the dropping speed is adjusted to 2, and the sodium silicate solution is slowly added dropwise to the white emulsion, with a magnetic stirrer used during the addition process. Finally, the mixture was placed in a microwave hydrothermal synthesizer, with the temperature set at 80℃-95℃, the heating time at 8-15 minutes, and the maximum heating power set between 250W-300W. After the reaction was complete, the mixture was removed, allowed to stand at room temperature, centrifuged, washed three times with anhydrous ethanol and deionized water, and dried to obtain the composite phase change material used to prepare buffer layer 700.

[0077] Please see Figures 3 to 4 In one embodiment, the inner liner 200 is provided with a vent hole 210, which is connected to the ventilation channel 900.

[0078] Even when the ventilation component 400 is not in operation, the ventilation holes 210 can still provide some ventilation when staff wear safety helmets, improving wearing comfort.

[0079] Furthermore, when the ventilation component 400 is in operation, some of the airflow will also flow through the ventilation holes 210, thereby cooling the head of the staff.

[0080] In one embodiment, the exterior of the helmet body 100 is provided with a composite coating 800. The main components of the composite coating 800 are polyvinylidene fluoride-hexafluoropropylene and modified nanoparticles. The composite coating 800 is cured on the surface of the helmet body 100 by a spraying process to reflect most of the sunlight and radiate mid-infrared rays, and also has a certain waterproof effect.

[0081] Furthermore, the main components of the composite coating 800 are as follows: polymer: polyvinylidene fluoride-hexafluoropropylene (30%), organic solvent: a mixture of acetone and butanone (40%), additives: modified nanoparticles (ZnO and TiO2) (20%), interface agent: organofunctional silane (5%), and auxiliary agents: dispersant and film-forming aid (5%). The manufacturing process of the composite coating 800 is as follows: nanoparticles (ZnO and TiO2) are uniformly dispersed in deionized water using an ultrasonic device, and perfluorooctyltriethoxysilane coupling agent (C6) is slowly added dropwise, and the mixture is modified by magnetic stirring at room temperature for 24 hours. Polyvinylidene fluoride-hexafluoropropylene (30%) and modified nanoparticles (20%) are dissolved in a mixed organic solvent (40%) of acetone and butanone, and organofunctional silane interface agent (5%), dispersant, and film-forming aid (5%) are added, and the mixture is thoroughly mixed by magnetic stirring at room temperature for 12 hours. When using, dilute with 10% water and apply by spraying or brushing onto the helmet body 100.

[0082] In one embodiment, ABS resin granules are dried in an oven at 60°C for 12 hours, and the dried ABS resin granules are heated in an injection molding machine to melt them into a liquid state. Finally, they are injection molded and pressurized into a helmet body 100 and an inner liner 200.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A safety helmet, characterized in that, include: A helmet body having an inner cavity and ventilation openings; The inner liner is disposed in the helmet body and located in the inner cavity. The inner liner and the cavity wall of the inner cavity are spaced apart to form a ventilation channel. The inner liner has an installation port, and both the installation port and the ventilation port are connected to the ventilation channel. A liner, the liner being disposed within the inner liner and located on the side of the inner liner away from the ventilation channel; and, A ventilation component is provided at the mounting opening and has an air inlet and an air outlet, the air inlet being disposed toward the ventilation channel and the air outlet being disposed toward the lining.

2. The safety helmet according to claim 1, characterized in that, The ventilation component includes a mounting base and a fan. The mounting base is located at the mounting opening and has an air inlet and an air outlet. The air inlet has an air inlet, and the air outlet has an air outlet. The air inlet and the air outlet are connected. The fan is rotatably mounted on the mounting base, and the rotation axis of the fan is parallel to the direction from the air inlet toward the air outlet.

3. The safety helmet according to claim 2, characterized in that, The safety helmet also includes a power mechanism, which is located on the helmet body and electrically connected to the fan, and is used to provide power for the rotation of the fan.

4. The safety helmet according to claim 3, characterized in that, The power mechanism includes a mounting compartment and a battery. The mounting compartment is located in the helmet body and has a mounting cavity. The battery is located in the mounting cavity and is electrically connected to the fan.

5. The safety helmet according to claim 3, characterized in that, The safety helmet also includes a temperature sensor, which is located between the inner liner and the inner bladder, and is electrically connected to the power mechanism.

6. The safety helmet according to claim 1, characterized in that, The installation port is provided with at least two, and the ventilation component is provided with at least two and is configured to correspond one-to-one with the installation port.

7. The safety helmet according to claim 1, characterized in that, The safety helmet also includes a reinforcement mechanism located within the inner liner.

8. The safety helmet according to claim 7, characterized in that, The reinforcing mechanism includes at least two first reinforcing ribs and at least two second reinforcing ribs. All the first reinforcing ribs are arranged parallel to each other and spaced apart along the transverse direction of the inner liner, and all the second reinforcing ribs are arranged parallel to each other and spaced apart along the longitudinal direction of the inner liner.

9. The safety helmet according to claim 1, characterized in that, The safety helmet also includes a cushioning layer, which is disposed within the ventilation channel.

10. The safety helmet according to claim 1, characterized in that, The inner liner has a vent hole, which is connected to the ventilation channel.

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