CN218151528U - Head-mounted fan - Google Patents

Abstract

The utility model discloses a head-mounted fan; comprises a wearing piece, a shell, a fan component and a battery; the wearing piece is connected with the shell and used for wearing the shell on the head in a fitting manner; the shape of the shell is matched with the head, an air inlet and an air outlet are arranged on the shell, and the fan assembly and the battery are accommodated in the shell; the fan assembly is electrically connected with the battery and is used for leading out airflow entering from the air inlet through the air outlet; the fan assembly is provided with one and is arranged in the middle of the shell, a first air channel and a second air channel are respectively arranged on the left side and the right side of the fan assembly in the shell, and air flow entering from the air inlet is guided out from the air outlet through the first air channel and the second air channel respectively. Fan subassembly sets up one, can reduce fan subassembly's occupation space, and fan subassembly's occupation space reduces the back, and corresponding first wind channel and second wind channel can obtain the extension, can prolong the coverage of air outlet based on this, and then make the air-out scope increase, improve the cooling effect of blowing.

Description

Head-mounted fan

Technical Field

The utility model relates to a fan technical field especially relates to a head-mounted fan.

Background

The fan is a tool for cooling by fresh air. The electric fan is a device which is driven by electricity to generate air flow, and blades arranged in the electric fan rotate after being electrified, so that mechanical energy is converted into wind energy, and the electric fan is converted into natural wind to achieve a cool effect. The portable and usable fan comprises a neck hanging fan and a head wearing fan, wherein the head wearing fan is to wear the fan on the head for daily use.

Current hang neck fan and wear fan and all be equipped with two fan assembly simultaneously usually, and the air current that fan assembly produced blows off from the air outlet via the wind channel, however, the inner space that two fan assembly occupy is more, and the wind channel that corresponds shortens, and the scope of air outlet is less, and the cooling effect of blowing is not good.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a head-mounted fan, and it is more to solve the inner space that two fan assembly occupy, and the wind channel that corresponds shortens, and the scope of air outlet is less, the not good problem of cooling effect of blowing.

In order to solve the technical problem, the utility model discloses a technical scheme provide a head-mounted fan, include: the wearable piece, the shell, the fan assembly and the battery; the wearing piece is connected with the shell and used for wearing the shell on the head in a fitting manner; the shape of the shell is matched with the head, an air inlet and an air outlet are arranged on the shell, and the fan assembly and the battery are accommodated in the shell; the fan assembly is electrically connected with the battery and is used for leading out airflow entering from the air inlet through the air outlet; the fan assembly is provided with one and is arranged in the middle of the shell, a first air channel and a second air channel are respectively arranged on the left side and the right side of the fan assembly in the shell, and air flow entering from the air inlet is guided out from the air outlet through the first air channel and the second air channel respectively.

Preferably, a first air deflector and a second air deflector are transversely arranged on one side in the shell, a third air deflector and a fourth air deflector are transversely arranged on the other side in the shell, the first air channel is formed by enclosing the first air deflector, the second air deflector and the shell, the second air channel is formed by enclosing the third air deflector, the fourth air deflector and the shell, the first air channel corresponds to the first air outlet, and the second air channel corresponds to the second air outlet; the air flow generated by the fan assembly flows out from the first air outlet and the second air outlet through the first air channel and the second air channel respectively.

Preferably, the housing comprises a first housing facing the head and a second housing connected with the first housing and far away from the head, the middle part in the housing is provided with an accommodating cavity, a fan assembly is arranged in the accommodating cavity, the accommodating cavity is provided with a first air outlet and a second air outlet, the first air outlet corresponds to the first air duct, and the second air outlet corresponds to the second air duct; the fan assembly comprises a centrifugal fan, a first air outlet is located on the oblique upper side of an impeller of the fan assembly, a second air outlet is located on the oblique lower side of the impeller of the fan assembly, and air flows flowing out of the first air outlet and the second air outlet respectively flow into a first air channel and a second air channel correspondingly.

Preferably, a first air collecting plate is further arranged in the shell, the first air collecting plate penetrates through the first air deflector, the first air collecting plate and the first shell are enclosed to form a third air channel, the third air channel corresponds to a third air outlet, a first flow dividing port penetrates through the first air channel of the first air collecting plate, the first flow dividing port is communicated with the first air channel and the third air channel, and partial air flow generated by the fan assembly enters the third air channel from the first flow dividing port and then flows out from the third air outlet; the shell is internally provided with a second air gathering plate, the second air gathering plate, a third air guiding plate and the first shell are enclosed to form a fourth air channel, the fourth air channel corresponds to a fourth air outlet, a second diversion port penetrates through the third air guiding plate, the second diversion port is communicated with the second air channel and the fourth air channel, and partial air flow generated by the fan assembly enters the fourth air channel from the second air channel through the second diversion port and then flows out from the fourth air outlet.

Preferably, the second air deflector, the accommodating cavity wall and the shell are enclosed together to form a main control cavity, the main control cavity is used for accommodating the main board, the third air deflector, the second air deflector, the accommodating cavity wall and the shell are enclosed to form a battery compartment, the battery compartment is located above the second air duct, and the battery compartment is used for accommodating a battery; the third air outlet and the fourth air outlet are both arranged towards the back.

Preferably, the casing is further provided with a first splitter plate and a second splitter plate, the first splitter plate and the second splitter plate are both arc-shaped, the first splitter plate is arranged in the middle of the first air duct and used for evenly splitting the air flow in the first air duct to the first air outlets on the two sides of the first splitter plate, and the second splitter plate is arranged in the middle of the second air duct and used for evenly splitting the air flow in the second air duct to the second air outlets on the two sides of the second splitter plate.

Preferably, the housing includes a first housing facing the head and a second housing connected to the first housing and away from the head, and the fan assembly includes centrifugal fans, and the air inlet includes a first air inlet provided in the first housing and a second air inlet provided in the second housing corresponding to each of the centrifugal fans.

Preferably, the outer wall of the first housing is provided with a support portion facing the head portion, the support portion is arranged corresponding to the first air inlet, a gap is formed between the support portion and the first housing, and the air flow enters the first air inlet from the gap.

Preferably, a baffle is arranged on the outer side of the second air inlet, a gap is formed between the baffle and the second shell, and air flow enters the second air inlet from the gap.

Preferably, the fan assembly comprises a centrifugal fan having a blade height of 21-25mm.

The utility model has the advantages that: fan subassembly sets up one, can reduce fan subassembly's occupation space, and fan subassembly's occupation space reduces the back, and corresponding first wind channel and second wind channel can obtain the extension, can prolong the coverage of air outlet based on this, and then make the air-out scope increase, improve the cooling effect of blowing.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a head-mounted fan according to the present invention;

fig. 2 is a schematic structural view of a visor according to an embodiment of the present invention;

fig. 3 is an exploded view of the housing and its internal structure according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a front view of a housing according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of the inside of the housing according to an embodiment of the head-mounted fan of the present invention;

fig. 6 is a schematic view of another direction inside the housing according to an embodiment of the present invention;

fig. 7 is a schematic structural view of another direction inside the housing according to an embodiment of the head-mounted fan of the present invention;

fig. 8 is a schematic structural diagram of a first housing according to an embodiment of the head fan of the present invention;

fig. 9 is a schematic structural diagram of a first air deflector, a first air collecting plate and a first flow dividing plate according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a third air deflector and a second air deflector according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

For the description of the present invention, the labels "front", "back", "up", "down", "left" and "right" shown in fig. 1 are used for promoting the understanding of the embodiment without limiting the invention. Here, the front-back direction represents the lateral direction, the left-right direction represents the longitudinal direction, and the up-down direction represents the vertical direction.

Fig. 1-10 show an embodiment of the head-mounted fan of the present invention, including a wearing piece 10, a housing 20, a fan assembly 30, and a battery 40; the wearing piece 10 is connected with the shell 20 and is used for wearing the shell 20 on the head in a fitting manner; the shape of the shell 20 is matched with the head, an air inlet and an air outlet are arranged on the shell 20, and the fan assembly 30 and the battery 40 are accommodated in the shell 20; the fan assembly 30 is electrically connected with the battery 40, and the fan assembly 30 is used for guiding out the airflow entering from the air inlet through the air outlet; fan assembly 30 is provided with one to the setting is at the middle part of casing 20, and the casing 20 is equipped with first wind channel 2031 and second wind channel 2051 respectively in the left and right sides of fan assembly 30, and the air current that the air intake department got into flows through first wind channel 2031 and second wind channel 2051 respectively, derives from the air outlet.

Fan assembly 30 sets up one, can reduce fan assembly 30's occupation space, and fan assembly 30's occupation space reduces the back, and corresponding first wind channel 2031 and second wind channel 2051 can obtain the extension, can prolong the coverage of air outlet based on this, and then make the air-out scope increase, improve the cooling effect of blowing.

The fan assembly 30 can be vertically disposed and can also be longitudinally or transversely disposed, preferably, the fan assembly 30 is vertically disposed. The vertical arrangement can reduce the space occupied by the fan assembly in the longitudinal or transverse direction and reduce the volume of the housing 20.

Preferably, the fan assembly 30 comprises a centrifugal fan. The centrifugal fan has the advantages of less air inlet requirement, large air outlet quantity, stable operation and low noise. The centrifugal fan comprises a motor 301 and fan blades 302, the fan assembly 30 can be vertically arranged, and can also be longitudinally or transversely arranged, and preferably, the fan assembly 30 is vertically arranged. The vertical arrangement can reduce the space occupied by the fan assembly in the longitudinal or transverse direction and reduce the volume of the housing 20.

The height of the fan blade 302 of a general centrifugal fan applied to a head-mounted fan is generally 10-15mm, and the air output is small, so that two centrifugal fans are generally used to increase the air output. In the present invention, when a centrifugal fan is used, it is preferable that the height of the fan blade 302 of the centrifugal fan is 21-25mm. When a centrifugal fan is used, the height of the fan blade 302 is increased, so that the air output of the centrifugal fan with the increased height of the fan blade 302 can be equal to or close to the air output of two common centrifugal fans.

As shown in fig. 3, the housing 20 includes a first housing 201 adjacent to the head and a second housing 202 connected to the first housing 201 and away from the head, the first housing 201 and the second housing 202 are both arc-shaped, and the first housing 201 is detachably connected to the second housing 202. The first casing 201 and the second casing 202 can be detachably connected by a buckle, or the first casing 201 and the second casing 202 can be connected by a bolt. Preferably, the air inlets include a first air inlet 211 provided in the first housing 201 and a second air inlet 212 provided in the second housing 202, corresponding to the centrifugal fan.

Preferably, as shown in fig. 3 and 4, a first air deflector 203 and a second air deflector 204 are transversely arranged on one side in the casing 20, a third air deflector 205 and a fourth air deflector 206 are transversely arranged on the other side in the casing 20, the first air duct 2031 is formed by enclosing the first air deflector 203, the second air deflector 204 and the casing 20, the second air duct 2051 is formed by enclosing the third air deflector 205, the fourth air deflector 206 and the casing 20, the first air duct 2031 corresponds to the first air outlet 221, and the second air duct 2051 corresponds to the second air outlet 222; the airflow generated by the fan assembly 30 flows out of the first air outlet 221 and the second air outlet 222 through the first air duct 2031 and the second air duct 2051, respectively. The first air outlet 221 is located at the lower portion of the left side of the first casing 201, and the air outlet direction is downward, and the second air outlet 222 is located at the lower portion of the right side of the first casing 201, and the air outlet direction is downward.

A first air duct 2031 is formed by the enclosure of the first air deflector 203, the second air deflector 204 and the housing 20, a second air duct 2051 is formed by the enclosure of the third air deflector 205, the fourth air deflector 206 and the housing 20, and the first air duct 2031 and the second air duct 2051 formed by the enclosure are both long and narrow. The air flow speed can be increased, the coverage area of the air flow can be increased, and the comfort degree of the head-mounted fan during use can be improved.

Preferably, as shown in fig. 4, a containing cavity 303 is arranged in the middle of the inside of the housing 20, a fan assembly 30 is arranged in the containing cavity 303, the containing cavity 303 is provided with a first exhaust port 3031 and a second exhaust port 3032, the first exhaust port 3031 corresponds to the first air duct 2031, and the second exhaust port 3032 corresponds to the second air duct 2051; the fan assembly 30 comprises a centrifugal fan, the first exhaust port 3031 is located on the oblique upper side of the impeller of the fan assembly 30, the second exhaust port 3032 is located on the oblique lower side of the impeller of the fan assembly 30, and the air flows out of the first exhaust port 3031 and the second exhaust port 3032 respectively flow into the first air channel 2031 and the second air channel 2051 correspondingly.

Preferably, as shown in fig. 4, 7 and 8, the first air deflection plate 203 and the third air deflection plate 205 are respectively disposed at the middle of the left and right sides of the casing 20. The first air guiding plate 203 and the third air guiding plate 205 each include an air guiding portion 2033 and a wind shielding portion 2034 connected to the air guiding portion 2033, one end of the air guiding portion 2033 is connected to the accommodating cavity 303 of the fan assembly 30 and is located above the air outlet of the accommodating cavity 303, the other end of the air guiding portion 2033 is adjacent to one end of the first air outlet 221 or the second air outlet 222 away from the fan assembly 30 and is connected to the wind shielding portion 2034, and the wind shielding portion 2034 extends toward the first air outlet 221 or the second air outlet 222. The second and fourth wind deflectors 204 and 206 are arc-shaped and are disposed at the lower side in the housing 20.

The wind blocking portion 2034 extends toward the first outlet 221 or the second outlet 222, and the fan assembly 30 blows air downward due to the arrangement of the first wind deflector 203 and the third wind deflector 205. The first air duct 2031 and the second air duct 2051 are respectively formed by the first air deflector 203, the third air deflector 205 and the casing 20 in a surrounding manner, and the first air duct 2031 and the second air duct 2051 are long and narrow, so that the flowing speed of air flow can be increased, the coverage area of the air flow can be increased, and the comfort level of the head-mounted fan during use can be improved.

Preferably, as shown in fig. 4, the first air deflector 203 is obliquely arranged in the housing 20, an upper end of the first air deflector 203 extends to the accommodating cavity 303 at the upper part of the first exhaust outlet 3031, and a lower end of the first air deflector 203 extends to an end of the first exhaust outlet 221 far from the fan assembly 30, so that the first air duct 2031 is obliquely arranged relative to the housing 20. The third air deflector 205 is transversely disposed in the casing 20, the second air duct 2051 is located at the lower portion of the casing 20, and the second air duct 2051 is approximately horizontal. Therefore, the first air duct 2031 and the second air duct 2051 are in a vortex shape, so that the first air outlet 3031 and the second air outlet 3032 in the fan assembly 30 can be farthest away, the air exhausted by the first air outlet 3031 and the second air outlet 3032 is not affected by each other, the air flow flowing out from the first air outlet 3031 and the second air outlet 3032 is uniform, and the use comfort of the head-mounted fan is improved.

Preferably, as shown in fig. 4 to fig. 7, a first wind collecting plate 207 is further disposed in the casing 20, the first wind collecting plate 207 passes through the first wind deflector 203, the first wind collecting plate 207 and the first casing 201 enclose to form a third wind duct 2072, the third wind duct 2072 corresponds to the third wind outlet 223, a first branch port 2071 penetrates through the first wind duct 2031 of the first wind collecting plate 207, the first branch port 2071 is communicated with the first wind duct 2031 and the third wind duct 2072, and a part of the airflow generated by the fan assembly 30 enters the third wind duct 2072 from the first branch port 2071 and then flows out from the third wind outlet 223. The second wind collecting plate 208 is further arranged in the casing 20, the second wind collecting plate 208, the third wind guide plate 205 and the first casing 201 are enclosed to form a fourth wind channel 2082, the fourth wind channel 2082 corresponds to the fourth wind outlet 224, the third wind guide plate 205 penetrates through the second split port 2081, the second split port 2081 is communicated with the second wind channel 2051 and the fourth wind channel 2082, and partial air flow generated by the fan assembly 30 enters the fourth wind channel 2082 from the second wind channel 2051 through the second split port 2081 and then flows out from the fourth wind outlet 224. The third air outlet 223 is located on the rear wall of the left side of the first casing 201, and the air outlet direction faces rearward. The fourth air outlet 224 is located on the rear wall of the right side of the first casing 201, and the air outlet direction is backward.

Preferably, as shown in fig. 6, the cross-sectional shape of the first wind collecting plate 207 may be U-shaped, arc-shaped, or square, a first branch opening 2071 may be formed on the upper side of the first wind collecting plate 207 adjacent to the fan assembly 30, the first wind collecting plate 207 and the first casing 201 enclose to form a third air duct 2072, and a third air outlet 223 with a backward air outlet direction is formed at a position corresponding to the third air duct 2072, so that the backward air outlet of the fan assembly 30 may be realized.

Preferably, as shown in fig. 7, the cross-sectional shape of the second wind collecting plate 208 may be U-shaped, arc-shaped, or square, a second flow splitting opening 2081 may be formed on the lower side of the second wind collecting plate 208 adjacent to the fan assembly 30, the second wind collecting plate 208 and the first housing 201 enclose to form a fourth wind duct 2082, and a fourth wind outlet 224 with a backward wind outlet direction is formed at a position corresponding to the fourth wind duct 2082, so that the fan assembly 30 can wind backward. Air is discharged to different directions, and the cooling effect of the head-mounted fan is improved.

When in use, only the first air deflector 203 and the third air deflector 205 may be arranged to realize downward air outlet of the fan assembly 30. Only the first wind collecting plate 207 and the second wind collecting plate 208 may be provided to realize the backward wind outlet of the fan assembly 30. The first air deflector 203 and the third air deflector 205, and the first air collecting plate 207 and the second air collecting plate 208 can be arranged at the same time to realize both downward air blowing and backward air blowing. Upward blowing can also be achieved based on the same concept. For example, the first air collecting plate 207 may be provided with a third diversion port, and the upper portion of the first casing 201 may be provided with a third air outlet 223.

Preferably, as shown in fig. 4, a first flow dividing plate 2032 and a second flow dividing plate 2052 are further disposed in the housing 20, the first flow dividing plate 2032 and the second flow dividing plate 2052 are both arc-shaped, the first flow dividing plate 2032 is disposed in the middle of the first air duct 2031 and is used for uniformly dividing the air flow in the first air duct 2031 to the first air outlets 221 on both sides of the first flow dividing plate 2032, and the second flow dividing plate 2052 is disposed in the middle of the second air duct 2051 and is used for uniformly dividing the air flow in the second air duct 2051 to the second air outlets 222 on both sides of the second flow dividing plate 2052.

The first flow dividing plate 2032 is disposed in the middle of the first air duct 2031, and is capable of dividing the air flow entering the first air duct 2031, that is, the first flow dividing plate 2032 is used as a boundary, so that the first air outlet 221 can be divided into two sections, and the air flow entering the first air duct 2031 can be uniformly divided into two sections of the first air outlet 221, thereby improving the uniformity of the air outlet and the comfort of the head-mounted fan during use. The second shunting plate 2052 has the same function as the first shunting plate 2032, and will not be described in detail.

The first air deflector 203, the second air deflector 204, the third air deflector 205, the fourth air deflector 206, the first flow dividing plate 2032, the second flow dividing plate 2052, the first wind collecting plate 207 and the second wind collecting plate 208 may be independent structures, may also be integrated structures, and may also be integrated structures with the first shell 201 or the second shell 202. Preferably, the first diversion plate 2032 and the second diversion plate 2052 are integrated with the first casing 201, the first air guiding plate 203 and the first air collecting plate 207 are integrated, the third air guiding plate 205 and the second air collecting plate 208 are integrated, and the second air guiding plate 204 and the fourth air guiding plate 206 are independent structures. The die can be arranged for integral forming so as to improve the processing efficiency. And reduces installation time.

Preferably, the second air deflector 204, the cavity wall of the accommodating cavity 303 and the housing 20 together enclose to form a main control cavity, and the main control cavity is used for accommodating the main board 70. The shape of the main board 70 is substantially triangular and matches the shape of the main control chamber, thereby making it possible to sufficiently use the space inside the housing 20 and reduce the volume of the housing 20.

The third air deflector 205, the second wind deflector 208, the cavity wall of the accommodating cavity 303 and the housing 20 enclose a battery compartment, the battery compartment is located above the second air duct 2051, and the battery compartment is used for accommodating the battery 40. The batteries 40 are provided in two, and the service time of the head-mounted fan can be increased by supplying power to one fan assembly 30 through the two batteries 40. Motherboard 70 electrically connects battery 40, fan assembly 30, and on-off switch 80. The switch 80 can control the battery 40 to supply power or cut off power to the fan assembly 30 through the motherboard 70, thereby controlling the start, stop and speed regulation of the fan assembly 30.

Preferably, the outer wall of the first housing 201 is provided with a support portion 60 facing the head, the support portion 60 is disposed corresponding to the first air inlet 211, a gap is formed between the support portion 60 and the first housing 201, and the air flow enters the first air inlet 211 from the gap.

Further, a cushion 601 is arranged outside the supporting portion 60, and the cushion 601 is close to the head. When the mask is worn, the hard shell 20 can be prevented from being in direct contact with the head, and the wearing comfort level is improved. The cushion 601 may be made of rubber, breathable cotton, or the like.

Preferably, as shown in fig. 3, a baffle 90 is disposed outside the second air inlet 212, and a gap is formed between the baffle 90 and the second housing 202, and the air flow enters the second air inlet 212 from the gap. The baffle 90 can prevent larger impurities from entering the second air inlet 212, and meanwhile, the appearance is improved. The baffle 90 may not be provided at the second intake vent 212.

Preferably, as shown in fig. 3, two ends of the housing 20 extend toward the head to form connecting portions 2011, the connecting portions 2011 are U-shaped, and two ends of the wearing piece 10 penetrate through the connecting portions 2011 at two sides respectively and are connected to the wearing piece 10.

The wearing piece 10 is an elastic wearing piece 10 (such as an elastic band, etc.), or a wearing piece 10 capable of adjusting the length (such as one end of the connection part of the wearing piece 10 is provided with a protrusion, the other end of the wearing piece 10 corresponding to the protrusion is provided with a plurality of grooves, the protrusion and the grooves are matched to connect the wearing piece 10, and the length of the wearing piece 10 is adjusted).

Further, a visor 50 is coupled to the housing 20, and the visor 50 is detachably and/or rotatably coupled to the housing 20.

The cap peak 50 is arranged to be an independent structure, and structures such as the fan assembly 30 and the like are not arranged in the cap peak 50, so that the weight of the cap peak 50 is reduced, and the wearing comfort level is improved. The visor 50 is provided, so that a sun-shading effect can be achieved when the head-mounted fan is used outdoors. When the visor 50 is detachably connected to the housing 20, the visor 50 may be installed for sunshade when used outdoors, and the visor 50 may be detached when used indoors, which facilitates daily use and carrying.

The wearing piece 10 is an elastic wearing piece 10 (such as an elastic band, etc.), or a wearing piece 10 capable of adjusting the length (such as one end of the connection part of the wearing piece 10 is provided with a protrusion, the other end of the wearing piece 10 corresponding to the protrusion is provided with a plurality of grooves, the protrusion and the grooves are matched to connect the wearing piece 10, and the length of the wearing piece 10 is adjusted).

Preferably, as shown in fig. 3, two ends of the housing 20 extend toward the head to form connecting portions 2011, the connecting portions 2011 are U-shaped, and two ends of the wearing piece 10 penetrate through the connecting portions 2011 at two sides respectively and are connected to the wearing piece 10.

The second housing 202 is provided with a first mating structure 501 towards the visor 50, the visor 50 is provided with a second mating structure 502 towards the second housing 202, and the first mating structure 501 and the second mating structure 502 mate such that the visor 50 and the second housing 202 are detachably and/or rotatably connected.

Preferably, the first engaging structure 501 is disposed at two ends of the second housing 202, the second engaging structure 502 is disposed at two ends of the visor 50, and the first engaging structure 501 and the second engaging structure 502 are pivotally connected, so that the visor 50 can rotate up and down.

As shown in fig. 2 and 3, the first mating structure 501 may also be a rotation hole provided at both ends of the second housing 202, and the second mating structure 502 may be a rotation shaft provided at the inner edge of the visor 50 to be fitted with the rotation hole. The shaft is inserted into the hole, so that the visor 50 is detachably and/or rotatably connected to the housing 20.

Screw holes may be provided at both ends of the second housing 202 and the middle portion of the rotation shaft, and screws may be screwed with the screw holes provided at the second housing 202 and the rotation shaft, to detachably and rotatably connect the visor 50 with the housing 20. The rotating shaft and the rotating hole can be in transition fit, the transition fit tolerance is preferably selected to be H6/k5, when no external force exists, the fit part has certain friction force to avoid the rotation of the matched structure, and when certain external force exists, the cap peak 50 can rotate for the shell 20 to a certain degree through the external force. The rotating shaft and the rotating hole may be provided with arc-shaped protrusions and grooves at intervals to limit the rotation angle of the visor 50. Through the above arrangement, the visor 50 can be detachably connected to the housing 20, and can also be rotatably connected. The rotating hole and the rotating shaft can also be connected in a mode that the rotating hole and the rotating shaft can only rotate relatively but cannot be detached. When rotatably coupled, the angle of rotation of the visor 50 may be adjusted to accommodate different scenarios. Based on the same concept, the rotation holes may be provided at both ends of the visor 50 and the rotation shafts may be provided at both ends of the second housing 202.

Therefore, the utility model discloses a head-mounted fan can reduce fan unit's occupation space, and fan unit's occupation space reduces the back, and corresponding first wind channel and second wind channel can obtain the extension, can prolong the coverage of air outlet based on this, and then make the air-out scope increase, improve the cooling effect of blowing.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.

Claims (10)

1. A head-mounted fan, comprising: the wearable piece, the shell, the fan assembly and the battery;

the wearing piece is connected with the shell and used for wearing the shell on the head in a fitting manner;

the shape of the shell is matched with that of the head, an air inlet and an air outlet are formed in the shell, and the fan assembly and the battery are accommodated in the shell;

the fan assembly is electrically connected with the battery and is used for guiding out airflow entering from the air inlet through the air outlet;

the fan assembly is provided with one and arranged in the middle of the shell, a first air channel and a second air channel are respectively arranged on the left side and the right side of the shell in the fan assembly, and air flow entering from the air inlet respectively flows through the first air channel and the second air channel and is guided out from the air outlet.

2. The head-mounted fan according to claim 1, wherein a first air deflector and a second air deflector are transversely disposed on one side of the casing, a third air deflector and a fourth air deflector are transversely disposed on the other side of the casing, the first air channel is formed by the first air deflector, the second air deflector and the casing in an enclosing manner, the second air channel is formed by the third air deflector, the fourth air deflector and the casing in an enclosing manner, the first air channel corresponds to the first air outlet, and the second air channel corresponds to the second air outlet; the air flow generated by the fan assembly flows out from the first air outlet and the second air outlet through the first air channel and the second air channel respectively.

3. The head-mounted fan of claim 2, wherein the housing comprises a first housing facing the head and a second housing connected to the first housing and away from the head, a containing cavity is formed in a middle portion of the housing, one of the fan assemblies is disposed in the containing cavity, the containing cavity is provided with a first air outlet and a second air outlet, the first air outlet corresponds to the first air channel, and the second air outlet corresponds to the second air channel; the fan assembly comprises a centrifugal fan, the first air outlet is located on the oblique upper side of an impeller of the fan assembly, the second air outlet is located on the oblique lower side of the impeller of the fan assembly, and air flows flowing out of the first air outlet and air flows flowing out of the second air outlet respectively and correspondingly flow into the first air channel and the second air channel.

4. The head-mounted fan of claim 3, wherein a first wind collecting plate is further disposed in the casing, the first wind collecting plate passes through the first wind guiding plate, the first wind collecting plate and the first casing enclose a third wind channel, the third wind channel corresponds to a third wind outlet, a first flow dividing port penetrates through the first wind channel of the first wind collecting plate, the first flow dividing port communicates the first wind channel and the third wind channel, and a part of the airflow generated by the fan assembly enters the third wind channel from the first flow dividing port and then flows out from the third wind outlet;

the fan component is characterized in that a second air gathering plate is further arranged in the shell, the second air gathering plate, the third air gathering plate and the first shell are enclosed to form a fourth air channel, the fourth air channel corresponds to a fourth air outlet, a second diversion port penetrates through the third air gathering plate and is communicated with the second air channel and the fourth air channel, and partial air flow generated by the fan component enters the fourth air channel from the second air channel through the second diversion port and then flows out from the fourth air outlet.

5. The head-mounted fan of claim 4, wherein: the second air deflector, the accommodating cavity wall and the shell are enclosed together to form a main control cavity, the main control cavity is used for accommodating a main board, the third air deflector, the second air deflector, the accommodating cavity wall and the shell are enclosed to form a battery compartment, the battery compartment is located above the second air channel, and the battery compartment is used for accommodating the battery; the third air outlet and the fourth air outlet are arranged towards the back.

6. The head-mounted fan according to claim 2, wherein a first flow dividing plate and a second flow dividing plate are further disposed in the housing, the first flow dividing plate and the second flow dividing plate are both arc-shaped, the first flow dividing plate is disposed in a middle portion of the first air duct and is used for uniformly dividing the air flow in the first air duct to the first air outlets on two sides of the first flow dividing plate, and the second flow dividing plate is disposed in a middle portion of the second air duct and is used for uniformly dividing the air flow in the second air duct to the second air outlets on two sides of the second flow dividing plate.

7. The head fan as claimed in claim 1, wherein the housing includes a first housing facing the head and a second housing connected to the first housing and remote from the head, and the fan assembly includes centrifugal fans, and the air inlet includes a first air inlet provided in the first housing and a second air inlet provided in the second housing corresponding to each of the centrifugal fans.

8. The head mounted fan of claim 7, wherein the outer wall of the first housing is provided with a support portion facing the head, the support portion is disposed corresponding to the first air inlet, and a gap is formed between the support portion and the first housing, and the air flow enters the first air inlet from the gap.

9. The head-mounted fan of claim 7, wherein a baffle is disposed outside the second air inlet, and a gap is formed between the baffle and the second housing, and the air flow enters the second air inlet from the gap.

10. A head-mounted fan according to any of claims 1 to 9, wherein the fan assembly comprises a centrifugal fan having a blade height of 21 to 25mm.

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