Helmet fan assembly based on rapid adjustment

Abstract

The utility model relates to the technical field of safety helmets, in particular to a fan assembly for a helmet based on quick adjustment, which comprises a safety helmet and a fan assembly, the fan assembly is sleeved on the safety helmet; the fan assembly comprises a mounting base and a wind direction adjusting unit, the wind direction adjusting unit comprises a shell, a plurality of fan blades, adjusting blades, a connecting rod and an adjusting plate, the two ends of the fan blades and the adjusting blades are rotationally connected with the shell, the fan blades and the adjusting blades are rotationally connected with the connecting rod, and the adjusting plate is slidably connected with the shell and used for shifting the adjusting blades; a plurality of locking protrusions are arranged on the outer surface of the shell, locking openings are formed in the locking protrusions, a plurality of locking heads are arranged on the surface of the mounting base, the locking heads and the locking openings are locked, and a wind direction adjusting unit is arranged in the fan assembly, so that a user can adjust the wind direction according to the actual requirement or the change of the working environment when using the fan; therefore, the cooling effect of the fan reaches the optimal state.

Description

Technical Field

[0001] The utility model relates to the technical field of safety helmets, in particular to a fan assembly for helmets based on rapid adjustment. Background Art

[0002] In modern industry and construction, hard hats are essential protective gear for workers. Their importance is undeniable. They not only effectively protect the head from accidental injuries such as falling objects and collisions, but also provide a certain degree of thermal and UV protection, ensuring basic safety for workers in complex and ever-changing working environments. However, when working in high-temperature environments, workers face significant heat stress challenges, which not only affects work efficiency but can also lead to serious occupational illnesses such as heat stroke and heat stroke, and can even be life-threatening.

[0003] In order to cope with the adverse effects of high temperature environments on workers, a type of hard hat with a fan function has appeared on the market. Through the design of built-in or external fans, wind circulation is used to remove heat from the head, providing workers with an immediate cooling effect and effectively alleviating the discomfort caused by high temperature work. However, although this innovative design has improved the working environment of workers to a certain extent, the existing technology still has significant limitations. Specifically, most of the existing hard hat fans adopt a fixed design and cannot adjust the wind direction according to the actual needs of workers or changes in the working environment. This limitation makes it difficult for the fan to achieve the optimal cooling effect. In some cases, improper wind direction may even cause discomfort, thereby affecting the work efficiency and safety of workers.

[0004] Furthermore, some helmet designs that incorporate fans through holes in the helmet shell, while achieving cooling, also reduce the helmet's structural strength, resulting in reduced impact and lateral pressure resistance, making it difficult to meet higher safety standards. This not only compromises the helmet's basic protective function but also poses a potential threat to worker safety.

[0005] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in this technical field. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the existing helmet provided with a fan cannot adjust the wind direction, and the installation method of opening holes on the helmet reduces the safety of the helmet.

[0007] The utility model adopts the following technical solutions:

[0008] On the one hand, the utility model provides a fan assembly for a helmet based on quick adjustment, comprising: a safety helmet 1 and a fan assembly 2; the fan assembly 2 is sleeved on the safety helmet 1;

[0009] The fan assembly 2 includes a mounting base 21 and a wind direction adjustment unit 22. The wind direction adjustment unit 22 includes a housing 220, a plurality of fan blades 221, an adjustment blade 222, a connecting rod 223, and an adjustment plate 224. The ends of the fan blades 221 and the adjustment blades 222 are respectively rotatably connected to the housing 220. The fan blades 221 and the adjustment blades 222 are both rotatably connected to the connecting rod 223. The adjustment plate 224 is slidably connected to the housing 220 and is used to move the adjustment blades 222.

[0010] The outer surface of the housing 220 is provided with a plurality of locking protrusions 2201 , and the locking protrusions 2201 are provided with locking openings 2202 . The surface of the mounting seat 21 is provided with a plurality of locking heads 213 , and the locking heads 213 are locked with the locking openings 2202 .

[0011] Preferably, the fan assembly 2 also includes a fan 20 and an outer cover 23; the wind direction adjustment unit 22 and the outer cover 23 are respectively arranged on both sides of the mounting seat 21, the fan 20 is installed in the mounting seat 21, and the outer cover 23 is fixedly connected to the mounting seat 21 to enclose the fan 20 in the mounting seat 21.

[0012] Preferably, a switch 210 is provided on the mounting base 21 , and the switch 210 is electrically connected to a motor provided inside the mounting base 21 , and a motor shaft of the motor is fixedly connected to the fan 20 .

[0013] Preferably, a first grid frame 214 is provided at the rear end of the mounting seat 21 , a fixing block 2140 is provided at the center of the first grid frame 214 , the motor is provided inside the fixing block 2140 , and the motor shaft of the motor is fixedly connected to the fan 20 .

[0014] Preferably, the connecting rod 2141 of the first grid frame 214 is a hollow structure, which is used to achieve electrical connection between the switch 210 and the motor.

[0015] Preferably, fixed arms 4 are respectively provided on both sides of the mounting seat 21, and a clamping plate 40 is provided at the end of the fixed arm 4. Clamping protrusions 215 are correspondingly provided on both sides of the mounting seat 21, and a clamping groove 2150 is provided on the clamping protrusion 215, and the clamping plate 40 is clamped with the clamping groove 2150.

[0016] Preferably, a first mounting buckle 41 is provided at the top end of the fixing arm 4 , and the first mounting buckle 41 is used to allow the elastic belt 5 to pass through so that the fan assembly 2 is sleeved on the safety helmet 1 .

[0017] Preferably, a shift fork 2240 is provided on the adjustment plate 224 , and a round rod 2220 is provided on the adjustment blade 222 , and the shift fork 2240 abuts against the round rod 2220 .

[0018] Preferably, a guide slot 2203 is provided on the housing 220 , and the adjustment plate 224 is slidably connected to the guide slot 2203 .

[0019] Preferably, the distances between the fan blades 221 and the regulating blades 222 are equal.

[0020] Compared with the prior art, the beneficial effects of the present invention are: first, by adopting an external fan 20, the fan 20 is sleeved on the safety helmet 1, thereby avoiding the problem of drilling holes in the safety helmet 1 for installation in existing products, which reduces the safety performance of the safety helmet 1; and, since the safe use period of the safety helmets 1 currently produced on the market cannot exceed three and a half years at most, the safety helmets 1 that have exceeded the use period will be scrapped, so the fan assembly 2 is separated from the safety helmet 1, and the fan 20 can still be used after the safety helmet 2 is scrapped.

[0021] Secondly, a wind direction adjustment unit 22 is provided in the fan assembly 2, so that the user can adjust the wind direction according to actual needs or changes in the working environment when using the fan 20, so that the cooling effect of the fan 20 can reach the best state, for example, focusing on blowing the wind from the neck to the back, or focusing on blowing the top area of the head inside the safety helmet, or even directing the wind to one side of the head (especially suitable for situations where the temperature on one side is higher in the working environment). BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a quick-adjustable fan assembly for a helmet provided by an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of a fan assembly for a helmet based on a quick adjustment fan assembly provided by an embodiment of the utility model;

[0025] Figure 3 Schematic diagram of a wind direction adjustment unit of a helmet-use fan assembly based on rapid adjustment provided by an embodiment of the utility model;

[0026] Figure 4The utility model provides a helmet fan assembly based on quick adjustment. Figure 3 Exploded diagram;

[0027] Figure 5 This is a schematic diagram of the distance between the round rod and the rotating shaft of a helmet fan assembly based on quick adjustment provided by an embodiment of the utility model;

[0028] Figure 6 Schematic diagram of a second grid frame of a quick-adjustable fan assembly for a helmet provided by an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the gap between the fan blades and the housing of a helmet fan assembly based on quick adjustment provided by an embodiment of the utility model;

[0030] Figure 8 The utility model provides a helmet fan assembly based on quick adjustment. Figure 7 AA section line sectional view;

[0031] Figure 9 This is a schematic diagram of a lock head and a lock port of a quick-adjustable fan assembly for a helmet provided by an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of a switch of a helmet fan assembly based on quick adjustment provided by an embodiment of the utility model;

[0033] Figure 11 Schematic diagram of a first grid frame of a quick-adjustable fan assembly for a helmet provided by an embodiment of the present invention;

[0034] Figure 12 Schematic diagram of a fixing arm of a helmet fan assembly based on quick adjustment provided by an embodiment of the utility model;

[0035] Figure 13 This is a schematic diagram of a snap-in plate and a snap-in slot of a quick-adjustable fan assembly for a helmet provided by an embodiment of the present invention;

[0036] Figure 14 Schematic diagram of a first mounting buckle and an elastic band of a quick-adjustable fan assembly for a helmet provided by an embodiment of the present invention;

[0037] Figure 15 This is a schematic diagram of the contact between a limit plate of a helmet fan assembly based on quick adjustment and a safety helmet provided by an embodiment of the utility model;

[0038] Figure 16This is a schematic diagram of a battery powering a fan assembly for a helmet based on a quick adjustment method provided by an embodiment of the utility model;

[0039] Figure 17 This is a schematic diagram of a mounting plate for a quick-adjustable fan assembly for a helmet provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as meaning open inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above terms due to reasons such as the order and position of appearance, it is not limited to that they can be carried in combination by one embodiment or example.

[0042] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0043] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, for example, the description may also use the method of adding "A" and "B" at the end to describe the same type of nouns as two independent individuals. In this case, the corresponding features defined as "A" and "B" are only used to distinguish the description purposes of the same type of individuals, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0044] When describing some embodiments, the expressions “coupling”, “coupling” and “connection” and their derivatives may be used. For example, when describing some embodiments, the term “connection” may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term “coupling” may be used to indicate that two or more components are in direct physical or electrical contact. However, the term “connection” or “coupling” may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other, such as “optical coupling”, “wireless connection”, etc. The embodiments disclosed here are not necessarily limited to the contents of the present invention.

[0045] In the description of this utility model, the expression "A and / or B" (where A and B are used to formally represent specific characteristic contents) is involved, and the corresponding expressions include the following three combinations: only A, only B, and a combination of A and B.

[0046] As used herein, “about,” “substantially,” or “approximately” includes the stated value and an average value that is within an acceptable range of deviation from the particular value, as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0047] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] Embodiment 1:

[0049] The utility model embodiment 1 provides a fan assembly for a helmet based on quick adjustment, such as Figure 1 As shown, it includes: a safety helmet 1 and a fan assembly 2; the fan assembly 2 is sleeved on the safety helmet 1. Figure 2 and Figure 3As shown, the fan assembly 2 includes a mounting base 21 and a wind direction adjustment unit 22, the wind direction adjustment unit 22 includes a housing 220, a plurality of fan blades 221, an adjustment blade 222, a connecting rod 223 and an adjustment plate 224, the ends of the fan blades 221 and the adjustment blades 222 are respectively rotatably connected to the housing 220, the fan blades 221 and the adjustment blades 222 are both rotatably connected to the connecting rod 223, the adjustment plate 224 is slidably connected to the housing 220, and the adjustment plate 224 is used to toggle the adjustment blades 222; in order to make the adjustment plate 224 easier to toggle the adjustment blades 222, as shown Figure 4 As shown, the adjustment plate 224 is provided with a shift fork 2240, and the adjustment blade 222 is provided with a round rod 2220, and the shift fork 2240 abuts against the round rod 2220. The fan blade 221 and the adjustment blade 222 are both provided with a connecting shaft 2212 for connecting with the connecting rod 223. The connecting shaft 2212 is provided on the upper end surface of the fan blade 221 and the adjustment blade 222. The connecting rod 223 is provided with a connecting hole 2230, and the connecting hole 2230 is rotatably connected to the connecting shaft 2212. On the other hand, in order to enable the adjustment blade 222 to rotate smoothly when the shift fork 2240 shifts the round rod 2220, as shown in FIG. Figure 5 As shown, the center of the round rod 2220 and the center of the rotation axis at both ends of the bottom of the adjustment blade 222 are not in the same straight line, and the two are staggered by a certain distance L. In order to enable the fan blade 221 and the adjustment blade 222 to rotate synchronously and at equal angles, the distances between the fan blade 221 and the adjustment blade 222 are equal.

[0050] Except for the mounting base 21 and the wind direction adjustment unit 22, see Figure 2 As shown, the fan assembly 2 also includes a fan 20 and an outer cover 23; the wind direction adjustment unit 22 and the outer cover 23 are respectively arranged on both sides of the mounting base 21, the fan 20 is installed in the mounting base 21, and the outer cover 23 is fixedly connected to the mounting base 21 to enclose the fan 20 in the mounting base 21.

[0051] In the above solution, the adjustment plate 224 is slidably connected to the housing 220. Figure 4As shown, the housing 220 is provided with a guide groove 2203, and the adjustment plate 224 is slidably connected to the guide groove 2203. As for the housing 220, since the housing 220 directly contacts the human skin, for the sake of wearing comfort, the main body of the housing 220 can be made of hard plastic, and its outer surface is coated with a layer of silicone to reduce the discomfort caused by the hard plastic rubbing against the skin. Secondly, the guide groove 2203 is also surrounded by soft silicone to increase the friction between the adjustment plate 224 and the guide groove 2203. When the guide groove 2203 is in the vertical direction, the adjustment plate 224 can be kept stable by the upward friction force in the guide groove 2203 and will not slide downward.

[0052] To prevent the fan blades 221, the regulating blades 222, the connecting rods 223 and the regulating plate 224 from being completely exposed on the surface of the housing 220, as shown in FIG. Figure 6 As shown, the rear end face of the housing 220 is provided with a second grid frame 2205. The second grid frame 2205 and the mounting seat 21 enclose the fan blades 221, the adjustment blades 222, the connecting rod 223 and the adjustment plate 224 in the housing 220 to prevent other objects from directly contacting the fan blades 221, the adjustment blades 222, the connecting rod 223 and the adjustment plate 224 and causing damage. In addition, as Figure 7 As shown in the dotted box, when the fan blades 221 are all biased to one side of the housing 220, there is a large gap on the other side of the housing 220. Since the gap area is blocked by the circular outline of the housing 220, the rotation range of the fan blades 221 in this area will be greatly limited. Therefore, it is not suitable to place the fan blades 221 in this area. Based on this, Figure 8 As shown, Figure 7 In the cross-sectional view taken along section line AA, two obstructions 2204 with inclined surfaces are positioned inside the housing 220. In the illustrated position, the obstructions 2204 slope upward from the second grid frame 2205 toward the other end of the housing 220. The obstructions 2204 block the gap between the fan blades 221 and the housing 220, preventing wind from blowing directly out of the gap and potentially impacting operator safety.

[0053] In the above solution, the wind direction adjustment unit 22 is connected to the mounting base 21. Since the wind direction that can be adjusted by the adjustment blade 222 is limited, in order to adapt to the wind direction required by more working scenes, in one embodiment, Figure 9As shown, the outer surface of the housing 220 is provided with multiple locking protrusions 2201, each of which is provided with a locking notch 2202. The surface of the mounting base 21 is provided with multiple locking heads 213, which lock with the locking notches 2202. The locking protrusions 2201 are arranged in an array with 90° intervals on the housing 220, and the corresponding locking heads 213 are also arranged in an array with 90° intervals on the mounting base 21. When the wind direction needs to be changed, the housing 220 can be removed and rotated 90° to be installed on the mounting base 21 to achieve the change in wind direction. Furthermore, the locking protrusions 2201 can be made of soft silicone, making it easy to remove or fix the locking protrusions 2201 from the locking heads 213.

[0054] According to the above scheme, on the one hand, by adopting an external fan 20, the fan 20 is sleeved on the helmet 1, thereby avoiding the problem of drilling holes in the helmet 1 for installation in existing products, which reduces the safety performance of the helmet 1; and, since the safe use period of the helmets 1 currently produced on the market cannot exceed three and a half years at most, the helmets 1 that exceed the use period will be scrapped, so the fan assembly 2 is separated from the helmet 1, and the fan 20 can still be used after the helmet 2 is scrapped. On the other hand, a wind direction adjustment unit 22 is provided in the fan assembly 2, so that the user can adjust the wind direction according to actual needs or changes in the working environment when using the fan 20, so that the cooling effect of the fan 20 reaches the best state, such as focusing on blowing the wind from the neck to the back, or measuring the impact and blowing the top area of the helmet, or even directing the wind to one side of the head (especially suitable for working environments with high temperatures on one side).

[0055] In order to drive the fan 20 to rotate, Figure 10 As shown, a switch 210 is provided inside the mounting base 21. The switch 210 is electrically connected to a motor (not shown) disposed inside the mounting base 21, the motor shaft of which is fixedly connected to the fan 20. The switch 210 is disposed at the lower end of the mounting base 21 and is enclosed in a soft plastic shell. The switch is disposed at the bottom of the soft plastic shell. Pressing the soft plastic shell upward, i.e., pressing the switch 210, can start or stop the switch 210 and control the rotation or stop of the fan 20.

[0056] To prevent the wires used for electrical connection between the switch 210 and the motor from being exposed, Figure 11As shown, the rear end of the mounting base 21 is provided with a first grid frame 214. A fixing block 2140 is located at the center of the first grid frame 214. A motor is housed within the fixing block 2140, and the motor shaft is fixedly connected to the fan 20. When the switch 210 is activated, the motor begins to operate, driving the fan 20 to rotate. Furthermore, the connecting rod 2141 of the first grid frame 214 is a hollow structure, which is used to electrically connect the switch 210 and the motor. The connecting wires between the switch 210 and the motor can pass through the hollow portion of the connecting rod 2141 to achieve electrical connection.

[0057] In the above solution, it is mentioned that the fan assembly 2 is sleeved on the safety helmet 1. In order to keep the fan assembly 2 stable when sleeved on the safety helmet 1, Figure 12 and Figure 13 As shown, the mounting base 21 is provided with a fixed arm 4 on both sides, and the end of the fixed arm 4 is provided with a clamping plate 40. The mounting base 21 is provided with a clamping protrusion 215 on both sides, and the clamping protrusion 215 is provided with a clamping groove 2150. The clamping plate 40 is clamped with the clamping groove 2150; wherein, as Figure 13 As shown, a protrusion 400 is provided on the inner side of the clamping plate 40 to prevent the clamping plate 40 from falling out after being clamped into the clamping slot 2150. Figure 12 and Figure 14 As shown, the top of the fixing arm 4 is provided with a first mounting buckle 41, which is used to pass the elastic band 5 so that the fan assembly 2 is sleeved on the safety helmet 1. If only the fixing arms 4 on both sides are used to install and fix the fan assembly 2 as a whole, it is not enough to achieve complete stability of the fan assembly 2. A limiting plate 216 is also provided on the top of the mounting seat 21. The limiting plate 216 is Z-shaped, and one end of the limiting plate 216 is fixedly connected to the mounting seat 21. The other end of the limiting plate 216 is provided with a fixing buckle 2160 for passing the elastic band 5. Figure 15 As shown, when the fan assembly 2 is sleeved on the safety helmet 1 , the Z-shaped inclined surface of the limiting plate 216 abuts against the brim of the safety helmet 1 , thereby further stabilizing the fan assembly 2 .

[0058] In order to facilitate the power supply to the motor connected to the fan 20, as shown in FIG. Figure 16 and Figure 17As shown, the fan assembly 2 is provided with a battery 6, which is fixed above the mounting base 21. The battery 6 is connected in series with the switch 210 and the motor (not shown) provided inside the mounting base 21. The switch 210 controls the on / off of the circuit between the battery 6 and the motor. A mounting plate 7 is provided between the battery 6 and the limiting plate 216 of the mounting base 21. The battery 6 and the mounting plate 7 are detachably connected. A second mounting buckle 70 is provided at both ends of the mounting plate 7. The second mounting buckle 70 allows the elastic band 5 (for the convenience of showing the second mounting buckle 70, Figure 17 The elastic band 5 is not shown in FIG. Figure 16 The elastic band 5 shown in FIG. is passed through to secure the mounting plate 7. The mounting plate 7 is provided with a receiving slot 71, into which the battery 6 is placed. When the battery 6 runs out of power, the operator can remove the battery 6 and replace it with a new one. Conductive springs (not shown) are provided on either side of the receiving slot 71 to electrically connect to the battery 6; the conductive springs are also connected in series with the motor via wires.

[0059] In actual application scenarios, the size, quantity and position arrangement of the fan assembly 2 on the helmet 1 can be selected based on the motor power and model, the wearer's feeling, and cost expenditure.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fan assembly for a helmet based on quick adjustment, characterized in that: include: A safety helmet (1) and a fan assembly (2); the fan assembly (2) is sleeved on the safety helmet (1); The fan assembly (2) comprises a mounting seat (21) and a wind direction adjustment unit (22); the wind direction adjustment unit (22) comprises a housing (220), a plurality of fan blades (221), an adjustment blade (222), a connecting rod (223) and an adjustment plate (224); both ends of the fan blade (221) and the adjustment blade (222) are rotatably connected to the housing (220); both the fan blade (221) and the adjustment blade (222) are rotatably connected to the connecting rod (223); the adjustment plate (224) is slidably connected to the housing (220); and the adjustment plate (224) is used to move the adjustment blade (222); The outer surface of the housing (220) is provided with a plurality of locking protrusions (2201), and the locking protrusions (2201) are provided with locking openings (2202). The surface of the mounting seat (21) is provided with a plurality of locking heads (213), and the locking heads (213) are locked with the locking openings (2202).

2. The quick-adjustable fan assembly for a helmet according to claim 1, characterized in that: The fan assembly (2) further comprises a fan (20) and an outer cover (23); the wind direction adjustment unit (22) and the outer cover (23) are respectively arranged on both sides of the mounting seat (21); the fan (20) is mounted in the mounting seat (21); the outer cover (23) is fixedly connected to the mounting seat (21), and the fan (20) is enclosed in the mounting seat (21).

3. The quick-adjustable helmet fan assembly according to claim 2, characterized in that: A switch (210) is provided on the mounting seat (21), and the switch (210) is electrically connected to a motor provided inside the mounting seat (21), and a motor shaft of the motor is fixedly connected to the fan (20).

4. The quick-adjustable fan assembly for a helmet according to claim 3, characterized in that: A first grid frame (214) is provided at the rear end of the mounting seat (21), a fixing block (2140) is provided at the center of the first grid frame (214), the motor is provided inside the fixing block (2140), and the motor shaft of the motor is fixedly connected to the fan (20).

5. The quick-adjustable fan assembly for a helmet according to claim 4, characterized in that: The connecting rod (2141) of the first grid frame (214) is a hollow structure, and is used to achieve electrical connection between the switch (210) and the motor.

6. The quick-adjustable helmet fan assembly according to claim 1, characterized in that: Fixed arms (4) are respectively provided on both sides of the mounting seat (21), and a clamping plate (40) is provided at the end of the fixed arm (4). Clamping protrusions (215) are correspondingly provided on both sides of the mounting seat (21), and a clamping groove (2150) is provided on the clamping protrusion (215), and the clamping plate (40) is clamped with the clamping groove (2150).

7. The quick-adjustable helmet fan assembly according to claim 6, characterized in that: A first mounting buckle (41) is provided at the top end of the fixed arm (4), and the first mounting buckle (41) is used to allow the elastic band (5) to pass through so that the fan assembly (2) is sleeved on the safety helmet (1).

8. The quick-adjustable fan assembly for a helmet according to any one of claims 1 to 7, characterized in that: A shift fork (2240) is provided on the adjustment plate (224), a round rod (2220) is provided on the adjustment blade (222), and the shift fork (2240) abuts against the round rod (2220).

9. The quick-adjustable fan assembly for a helmet according to any one of claims 1 to 7, characterized in that: A guide slot (2203) is provided on the housing (220), and the adjustment plate (224) is slidably connected to the guide slot (2203).

10. The quick-adjustable fan assembly for a helmet according to any one of claims 1 to 7, characterized in that: The fan blades (221) and the regulating blades (222) are spaced equally from each other.

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