CN113898602A - Fan worn on neck - Google Patents

Abstract

The embodiment of the invention provides a neck-wearing fan which comprises a first air outlet part and a second air outlet part, wherein the first air outlet part is provided with a first accommodating cavity, a first air inlet and a first air outlet which are communicated with the first accommodating cavity in a fluid mode, the first air outlet is formed in a neck-wearing support of the neck-wearing fan, a first fan is arranged in the first accommodating cavity, and air generated by air sucked from the first air inlet is blown out through the first air outlet when the first fan operates. The lateral wall of the neck-wearing support is provided with a mounting seat, the second air outlet portion comprises a shell provided with a second accommodating cavity and a second fan accommodated in the second accommodating cavity, the shell is provided with a second air outlet communicated with the second accommodating cavity, and the shell is mounted on the mounting seat and can rotate relative to the mounting seat to adjust the position of the second air outlet.

Description

Fan worn on neck

Technical Field

The invention relates to the technical field of fans, in particular to a neck-worn fan.

Background

In recent years, various portable fans have appeared on the market, one of which is a neck fan. A neck-worn fan generally includes a neck-worn holder worn around a neck of a human body and a fan assembly connected to the neck-worn holder. The neck-wearing bracket is provided with an air duct and an air outlet. The fan assembly operates to generate forced airflow, and the forced airflow flows along the air duct and is finally blown to the neck of a user through the air outlet. However, after the existing neck-wearing fan is worn on the neck of a user, most of the wind from the wind outlet blows towards the neck of the human body, and little or no wind blows towards other parts of the human body, such as the face or the back, so that the requirement for blowing air to cool other parts of the human body, such as the face or the back of the user, cannot be met. On the other hand, a neck brace of a conventional neck fan generally has two brace portions, and is formed in a U shape suitable for being worn around a neck. When not in use, the neck wearing fan occupies a large space, and is inconvenient for a user to carry or store.

Disclosure of Invention

Accordingly, the present invention is directed to a neck fan that overcomes at least one of the above-mentioned disadvantages.

In one aspect, an embodiment of the present invention provides a neck fan, which includes a first air outlet portion and a second air outlet portion. First air-out portion be equipped with first accept the chamber and with first air intake and the first air outlet of accepting chamber fluid intercommunication, first air outlet is seted up in the neck of fan is worn on the support, first accept the intracavity and be equipped with first fan, first fan operation is followed the wind warp that first air intake induced air produced first air outlet blows out. The side wall of the neck wearing support is provided with a mounting seat. The second air outlet part comprises a shell provided with a second accommodating cavity and a second fan accommodated in the second accommodating cavity. The shell is provided with a second air outlet communicated with the second accommodating cavity in a fluid mode, and the shell is mounted on the mounting seat and can rotate relative to the mounting seat to adjust the position of the second air outlet.

In one embodiment, the mounting seat comprises a first mounting surface facing the shell, the shell comprises a second mounting surface facing the mounting seat, and a rotating positioning structure is arranged between the first mounting surface and the second mounting surface.

In an embodiment, the rotation positioning structure includes a plurality of positioning slots and at least one elastically loaded positioning protrusion, the positioning slots are disposed on one of the first mounting surface and the second mounting surface and are spaced apart from each other along the rotation direction of the housing, the at least one elastically loaded positioning protrusion is disposed on the other of the first mounting surface and the second mounting surface, and the at least one elastically loaded positioning protrusion is configured to selectively cooperate with the positioning slots to selectively position the second air outlet portion at a plurality of different circumferential positions in the rotation direction of the housing.

In one embodiment, a groove is formed on one of the first mounting surface and the second mounting surface on which the at least one elastically-loaded positioning protrusion is disposed, the groove has a groove bottom and a groove opening, and the at least one elastically-loaded positioning protrusion includes a positioning element and an elastic element. The positioning piece is positioned in the groove and partially exposed out of the opening part of the groove to be clamped in one positioning groove. The elastic piece is arranged at the bottom of the groove and applies elastic bias towards the opening part of the groove to the positioning piece.

In an embodiment, the at least one elastically loaded positioning protrusion includes a limiting member disposed at the opening of the groove to prevent the positioning member from coming out of the groove. In one embodiment, the positioning member is spherical or cylindrical.

In one embodiment, the mounting seat includes a protruding central portion, the first mounting surface is disposed on the central portion, and the rotational positioning structure is disposed between the central portion and the housing.

In one embodiment, the central portion has a mounting hole, the housing is rotatably engaged with the mounting hole through a connecting shaft, and the rotational positioning structure is disposed around the mounting hole.

In one embodiment, the first receiving cavity is located at an end of the neck wearing support, the end has an outer side far away from the neck of the human body and an inner side close to the neck of the human body, the mounting seat is arranged at the inner side and comprises an outer ring part and a central part, a through hole is arranged between the central part and the outer ring part, a gap is formed between the outer ring part and the housing, the first receiving cavity of the first air outlet part is in fluid communication with the through hole, and the through hole is in fluid communication with the gap; at least part of the first air inlet is arranged on the outer side, and the gap is used as the other part of the first air inlet.

In one embodiment, the housing includes a bottom wall, a top wall opposite to the bottom wall, and an annular side wall connected between the bottom wall and the top wall, the bottom wall, the annular side wall, and the top wall together form the second receiving cavity, the top wall is provided with a second air inlet in fluid communication with the second receiving cavity, and the second air outlet is disposed on the annular side wall; a shaft tube is fixedly arranged on one side, located in the second accommodating cavity, of the bottom wall or the top wall, the second fan comprises a stator assembly and a rotor assembly, the stator assembly is fixed on the shaft tube, and the rotor assembly comprises a permanent magnet in magnetic fit with the stator assembly and a fan wheel fixed relative to the permanent magnet; the other side of the bottom wall, which deviates from the second accommodating cavity, is rotatably connected with the central part of the mounting seat. For example, a connecting shaft is arranged on the other side of the bottom wall, which is away from the second accommodating cavity, and the connecting shaft is rotatably connected with the central part of the mounting seat.

In one embodiment, the mounting seat includes a first mounting surface facing the housing, and the housing includes a second mounting surface facing the mounting seat, the first mounting surface being immediately adjacent to the second mounting surface.

The embodiment of the invention provides a neck-wearing fan which is provided with a first air outlet part for cooling a neck and a second air outlet part for cooling a face or a back, wherein an air outlet of the second air outlet part can be adjusted in angle, so that air in the second air outlet part can be blown to different parts of a face, and various cooling requirements of a user are met. In some embodiments, the side wall of the neck wearing support is provided with the mounting seat, the second air outlet portion is mounted on the neck wearing support through the mounting seat, and the mounting seat has a certain thickness, so that the structure and the mounting strength of the mounting seat are improved. In some embodiments, the outer shell of the second air outlet part is closely adjacent to the mounting surface of the mounting seat, the force arm of the connecting shaft between the outer shell of the second air outlet part and the mounting surface of the mounting seat is reduced, and the risk of breakage of the connecting shaft in the use process is reduced. In some embodiments, a rotation positioning structure is arranged between the housing of the air outlet part and the mounting seat, the air outlet part can be selectively positioned at a plurality of different circumferential positions, the air outlet position can be conveniently adjusted and positioned by a user, and angle perception feedback can be provided for the user in the adjusting process.

In another aspect, an embodiment of the present invention provides a neck fan, which includes a first air outlet portion and a second air outlet portion. First air-out portion be equipped with first accept the chamber and with first air intake and the first air outlet of accepting chamber fluid intercommunication, first air outlet is seted up in the neck of fan is worn on the support, first accept the intracavity and be equipped with first fan, first fan operation is followed the wind warp that first air intake induced air produced first air outlet blows out. And a shaft tube is fixedly arranged on the side wall of the neck wearing bracket. The second air outlet part comprises a shell provided with a second accommodating cavity and a second fan accommodated in the second accommodating cavity. The shell is provided with a second air inlet and a second air outlet which are communicated with the second containing cavity in a fluid mode, and when the second fan operates, air sucked from the second air inlet is blown out of the second air outlet. The second fan is connected on the central siphon, the shell can wear the support for the neck and rotate in order to adjust the position of second air outlet.

In an embodiment, the housing includes an end wall and an annular side wall, the end wall and the annular side wall collectively defining the second receiving cavity, the second intake vent is disposed on the end wall, and the second exhaust vent is disposed on the annular side wall. In one embodiment, a mounting seat is fixedly arranged on the neck wearing support, and the shell is rotatably connected to the mounting seat.

In one embodiment, the mounting base protrudes from a surface of the neck mount.

In one embodiment, the mount includes an outer ring portion and a central portion, the shaft tube being disposed on the central portion.

In one embodiment, the housing is rotatably connected to the mounting base through a support frame, the support frame is fixedly connected with the mounting base, and the housing is rotatably connected to the mounting base and covers the periphery of the support frame.

In one embodiment, the second fan defines an axial direction and a radial direction, an axially inner end of the support frame is fixedly connected with the mounting seat, and an axially outer end of the support frame is rotatably connected with the housing.

In one embodiment, a mounting platform is provided at a central portion of the axially outer end of the support frame, and the housing is rotatably connected to the mounting platform.

In one embodiment, one of the mounting table and the housing is provided with spring-loaded locating projections, and the other of the mounting table and the housing is provided with locating slots, the spring-loaded locating projections for selectively engaging the locating slots.

In one embodiment, the elastically loaded positioning protrusion is disposed on an inner side of an end wall of the housing, the inner side of the end wall forms a groove having a groove bottom and a groove opening, and the elastically loaded positioning protrusion includes a positioning element, an elastic element, and a limiting element. The positioning piece is positioned in the groove and partially exposed out of the groove so as to be clamped into one positioning groove. The elastic piece is arranged at the bottom of the groove and applies elastic bias towards the opening part of the groove to the positioning piece. The limiting piece is arranged at the opening part of the groove to prevent the positioning piece from separating from the groove.

In one embodiment, the recess is formed by a cylindrical element connected to the inside of the end wall, the end of the cylindrical element facing the support frame being open.

In one embodiment, a base is disposed at an axial inner end of the support frame, and the base is fixedly connected to the outer ring portion of the mounting seat. In one embodiment, the support frame comprises a plurality of support bars, each support bar is located outside the impeller and connected between the base and the mounting platform. In one embodiment, each support bar has an axially extending portion extending axially from the base and a radially extending portion extending radially outwardly from an axially outer end of the axially extending portion to fixedly connect with the mounting block.

In one embodiment, the outer edge of the base is smoothly connected with the outer edge of the mounting seat, and the outer edge of the end of the shell facing the base is flush with the outer edge of the base, so that the base, the shell and the mounting seat are smoothly connected. In an embodiment, a through hole is formed between the central portion and the outer ring portion of the mounting seat, the first accommodating cavity of the first air outlet portion is communicated with the through hole, a gap is formed between the axial inner end of the annular side wall and the base in the axial direction, the through hole is in fluid communication with the gap, at least a part of the first air inlet of the first air outlet portion is arranged on the outer side of the neck-worn support, and the gap serves as the other part of the first air inlet.

The embodiment of the invention provides a neck-wearing fan, which is provided with a first air outlet part for cooling a neck and a second air outlet part for cooling other parts of a human body, such as a face or a back, wherein an air outlet of the second air outlet part can be adjusted in angle, so that air in the second air outlet part can be blown to different parts of the face or the back, and various cooling requirements of a user are met. In some embodiments, the second fan of the second air outlet portion is connected to the mounting seat of the side wall of the neck wearing support, so that when the angle of the air outlet of the second air outlet portion is adjusted, only the shell of the second air outlet portion needs to be rotated, the fan does not need to be rotated, and the reliability and the service life of the second air outlet portion are improved. In some embodiments, the rotary positioning structure is arranged, the second air outlet part can be selectively positioned at a plurality of different circumferential positions, the air outlet position can be conveniently adjusted and positioned by a user, and angle perception feedback can be provided for the user in the adjusting process.

Drawings

Fig. 1 is a front view of a neck fan according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of the neck fan shown in FIG. 1 at an angle;

FIG. 3 is an exploded perspective view of the neck fan shown in FIG. 1 at another angle;

fig. 4 is an exploded perspective view of an air outlet portion of the neck fan shown in fig. 2 at an angle;

fig. 5 is an exploded perspective view of the air outlet portion of the neck fan shown in fig. 4 at another angle;

FIG. 6 is an enlarged view of the portion of the neck worn fan collar B shown in FIG. 3;

FIG. 7 is a cross-sectional view of the neck worn fan shown in FIG. 1 taken along line A-A;

FIG. 8 is an enlarged view of the circled portion C of FIG. 7;

fig. 9 is a perspective assembly view of a neck fan according to another embodiment of the present invention;

FIG. 10 is a front view of the neck mounted fan of FIG. 9, showing its axis of symmetry D and axis of rotation X;

FIG. 11 is a side view of the neck fan of FIG. 9 showing its axis of symmetry D and axis of rotation X, wherein the axis of symmetry D and axis of rotation X are spaced in a front-to-back direction and parallel to each other;

FIG. 12 is an exploded perspective view of the neck fan of FIG. 9 at an angle;

FIG. 13 is an exploded perspective view of the neck fan of FIG. 9 at another angle;

FIG. 14 is an exploded perspective view of an outlet portion of the neck fan of FIG. 12 at an angle;

FIG. 15 is an exploded perspective view of the outlet portion of FIG. 14 at another angle;

FIG. 16 is an exploded view of the housing of the air outlet of FIG. 15 at another angle;

FIG. 17 is an enlarged view of the neck fan collar E portion of FIG. 12;

FIG. 18 is a schematic view of the neck fan of FIG. 9 during a rotational folding process;

FIG. 19 is a schematic view of the neck fan of FIG. 9 in a rotated, folded condition for storage;

fig. 20 is a cross-sectional view of the neck fan of fig. 10 taken along a symmetry axis D;

fig. 21 is an enlarged view of a portion of the neck fan band F of fig. 20.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

It should be noted that all directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Fig. 1 is a front view of a neck fan 10 according to an embodiment of the present invention. Fig. 2 and 3 are exploded perspective views of the neck fan 10 at different angles. Fig. 4 and 5 are schematic perspective exploded views of one of the air outlet portions at different angles. Fig. 6 is a partially enlarged schematic view of fig. 3. Fig. 7 and 8 are sectional views showing a specific internal structure of the air outlet part.

Referring to fig. 1 to 8, a neck fan 10 according to an embodiment of the present invention includes a neck support 12, a first air outlet portion 14 and a second air outlet portion 16.

The neck-worn support 12 has a curved shape suitable for wearing on the neck of a human body, and is provided inside with a space for accommodating batteries and other elements, and a flow passage through which a gas flow flows. In the illustrated embodiment, the neck brace 12 has two brace portions 18, 20 that are rotatable relative to each other, the two brace portions 18, 20 being connected by a rotating structure 22. The construction and function of the rotary structure 22 will be described in detail later (in conjunction with fig. 9 to 21). In other embodiments, the neck brace 12 may not have the rotation structure 22, i.e., the mutual rotation function.

In the illustrated embodiment, the first air outlet portion 14 is provided on both of the two frame portions 18, 20 of the neck wear frame 12. In other embodiments, the first air outlet portion 14 may be provided on only one of the support portions. The neck brace 12 has two ends 24, and each end 24 is provided with the second air outlet portion 16 facing the inner side of the neck of the human body. In other embodiments, the second air outlet portion 16 may be provided at only one of the end portions 24. Furthermore, the second air outlet 16 can also be arranged on the outer side of the end 24 facing away from the neck of the human body. Although the second air outlet portion 16 is disposed at the end portion 24 in the illustrated embodiment, in some other embodiments, the second air outlet portion 16 may not be disposed at the end portion 24, but may be disposed at a middle position of the neck brace 12. When the second air outlet part 16 is arranged at the end part 24, the face of a person can be cooled by blowing air; when the second air outlet portion 16 is disposed near the middle position, the air can be blown to the back of the human body for cooling.

Referring to fig. 2 and 3, the first air outlet portion 14 is provided with a first receiving cavity 26 and a first air outlet 28 in fluid communication with the first receiving cavity 26. The first housing cavity 26 is provided with a first fan 30 therein, and the first outlet 28 is opened on the neck-wearing bracket 12 of the neck-wearing fan 10. Each end 24 of the neck brace 12 is provided with a first inlet vent 32 on a side facing away from the neck of the person, the first inlet vent 32 being in fluid communication with the first receiving cavity 26. Thus, when the first fan 30 operates, air is drawn from the first air inlet 32, and the generated air flows through the flow channel in the bracket portion and then is blown out through the first air outlet 28. The first outlets 28 are provided in plural along the extending direction of the frame portions 18 and 20, and blow the wind generated by the first fan 30 toward the neck of the human body.

An axle tube 34 is fixedly disposed within the end 24 of the neck brace 12. The first fan 30 includes a stator assembly 36 and a rotor assembly 38. A stator assembly 36 is secured to the shaft tube 34 for energizing to generate a magnetic field. The rotor assembly 38 includes a fan wheel 38A, and permanent magnets such as magnets are fixedly mounted inside the fan wheel 38A. The rotor assembly 38 also includes a shaft 40 that is fixed relative to the impeller 38A, the shaft 40 being rotatably supported within the shaft tube 34. Stator assembly 36 is energized to generate a magnetic field that magnetically drives the permanent magnets to rotate, thereby rotating impeller 38.

Referring to fig. 4 and 5, the second air outlet portion 16 includes a housing 44 having a second receiving cavity 42, and a second fan 46 received in the second receiving cavity 42. The housing 44 is provided with a second intake vent 48 and a second exhaust vent 50 in fluid communication with the second receiving cavity 42. The housing 44 is mounted to the end 24 of the neck brace 12 and is rotatable relative to the end 24 to adjust the position of the second outlet vent 50.

Specifically, in the illustrated embodiment, the housing 44 includes a bottom wall 52, a top wall 56 opposite the bottom wall 52, and an annular side wall 58 connected between the bottom wall 52 and the top wall 56. The bottom wall 52, the annular side wall 58 and the top wall 56 together form the second receiving cavity 42, the second air inlet 48 is disposed on the top wall 56, and the second air outlet 50 is disposed on the annular side wall 58. A shaft tube 60 is fixedly disposed on one side of the bottom wall 52 or the top wall 56 of the second receiving cavity 42. In the illustrated embodiment, top wall 56 and annular sidewall 58 are integrally formed as a mask 54, and mask 54 is fixedly attached to bottom wall 52. Second fan 46 includes a stator assembly 62 and a rotor assembly 64. Stator assembly 62 is secured to the outside of shaft tube 60. Rotor assembly 64 includes a permanent magnet 64A in magnetic driving engagement with stator assembly 62, and a sector wheel 64B fixed relative to permanent magnet 64A. The permanent magnet 64A may be a magnet, such as a permanent magnet ring, disposed inside the impeller 64B. The rotor assembly 64 further includes a shaft 65 fixed relative to the impeller 64B, the shaft 65 being rotatably supported within the shaft tube 60. Stator assembly 62 is energized to generate a magnetic field that magnetically drives permanent magnet 64A to rotate, which in turn drives impeller 64B to rotate. The user can adjust the position of the second air outlet 48 in the rotation direction of the housing 44 by pulling the face shield 54, i.e. adjust the blowing angle of the second air outlet 48. In this embodiment, the second air outlet portion 16 is mainly used for blowing air toward the face, so that the air outlet angle of the second air outlet portion 16 can be adjusted by pulling the face mask 54, so that the air can be blown to different parts of the face. In other embodiments, the shaft tube 60 can also be disposed on the side of the end wall 56 that is located in the second receiving cavity 42. Preferably, the second fan 46 is a centrifugal fan, the housing 44 is cylindrical, and the shaft tube 60 is eccentrically disposed from the axial center of the housing 44, so that the second fan 46 is eccentrically disposed in the second receiving cavity 42 of the housing 44.

Referring also to fig. 6, in the illustrated embodiment, the mounting seat 66 is provided on the side wall of the neck support 12, and the housing 44 of the second air outlet portion 16 is rotatably mounted to the mounting seat 66. The mounting seat 66 may be an integrally formed part of the neck brace 12, or may be a separate component mounted to the neck brace 12, which is not limited in the present invention.

In the illustrated embodiment, the mounting block 66 protrudes from the surface of the neck mount 12 such that the mounting block 66 has a thickness that increases the structural strength of the mounting block 66 while facilitating a reduction in the thickness of the entire neck mount sidewall. In other embodiments, however, the mounting block 66 may be flush with the surface of the neck brace 12 or recessed relative to the surface of the neck brace 12. In the illustrated embodiment, the mounting block 66 is circumferentially grooved (see fig. 7) on its outer periphery such that the mounting block 66 is formed in an hourglass-like configuration with two large ends and a small middle, i.e., the cross-sectional dimension of the two ends of the mounting block 66 is greater than the cross-sectional dimension of the middle portion. The mount 66 includes a first mounting surface 68 facing the housing 44, and the housing 44 includes a second mounting surface 70 facing the mount 66. When the housing 44 is rotatably mounted to the mounting block 66, the first mounting surface 68 is immediately adjacent to the second mounting surface 70. The term immediately adjacent in this embodiment means that the two are in contact or at a small distance, which may be chosen for example in the range of 0.8-2.5 mm.

In the illustrated embodiment, the mount 66 includes an outer ring portion 72 and a central portion 74. The outer ring part 72 and the central part 74 are protruded from the surface of the neck mount 12 to have a certain thickness, so that the mounting strength of the second air outlet part 16 can be enhanced. The first mounting surface 68 is provided on the center portion 74. The central portion 74 is provided with a mounting hole 76 and the housing 44 is rotatably engaged with the mounting hole 74 by a connecting shaft 78. In the illustrated embodiment, the connecting shaft 78 is fixedly attached to the bottom wall 52 of the housing 44. A screw hole 80 is provided in the coupling shaft 78, and after the coupling shaft 78 is inserted into the mounting hole 76 of the central portion 74, a bolt 82 is screwed into the screw hole 80 from the other side of the central portion 74 (the side located in the first receiving chamber 26) to prevent the coupling shaft 78 from being detached from the mounting hole 76. The outer diameter of the connecting shaft 78 is slightly smaller than the diameter of the mounting hole 76, so that the connecting shaft 78 can rotate in the mounting hole 76. Since the second mounting surface 70 of the housing 44 is in close proximity to the first mounting surface 68 of the central portion 74, the portion of the connecting shaft 78 between the two mounting surfaces 68, 70 is short, i.e., the moment arm is short, so that a user experiences a small moment of deflection on the connecting shaft 78 when the user normally dials the housing 44 or the housing 44 is subjected to an accidental impact, thereby greatly reducing the risk of breaking the connecting shaft 78. The first mounting surface 68 and the second mounting surface 78 may not be disposed in close proximity if this lower moment of deflection is not sought or if other designs reduce the risk of breakage of the connecting shaft.

In the above embodiment, the connecting shaft 78 is an element fixed to the bottom wall 52. The connecting shaft 78 and the shaft tube 60 on either side of the bottom wall 52 may be a unitary tubular member to which the bottom wall 52 is fixedly attached. The connecting shaft 78 and the shaft tube 60 can also be integrally formed elements with the bottom wall 52. In other embodiments, the connecting shaft 78 may be an element on the central portion 74, i.e., the connecting shaft 78 is rotatably inserted into the housing 44. Alternatively, the bolt 82 also serves as a part of the connecting shaft. Therefore, the form of the connecting shaft between the housing 44 and the center portion 74 is various and is not limited to the structure shown in the drawings.

In the illustrated embodiment, a through hole 84 is provided between the central portion 74 and the outer ring portion 72. When the second air outlet portion 16 is installed, an annular gap 86 is formed between the outer annular portion 72 and the bottom wall 52 of the housing 44. The first receiving cavity 26 of the first air outlet portion 14 is in fluid communication with the through hole 84, the through hole 84 is in fluid communication with the slit 86, and the slit 86 serves as the other part of the first air inlet 32 of the first air outlet portion 14. Thus, the first air outlet portion 14 is provided with the first air inlet 32 at the inner side in addition to the first air inlet 32 formed at the outer side of the end portion 24 of the neck wearing frame 12, so that the air inlet amount is increased, and the air outlet amount is increased accordingly. Alternatively, at least a portion of the first wind inlet 32 of the first wind outlet portion 14 is disposed at the outer side, and the gap 86 serves as another portion of the first wind inlet 32. Of course, in other embodiments, the first air inlet 32 may be provided only outside the end portion 24, and the first air inlet 32 may not be provided inside the end portion 24.

Referring to fig. 7 and 8 together, in the illustrated embodiment, a rotational alignment structure is provided between the first mounting surface 68 and the second mounting surface 70, disposed about the mounting aperture 76 of the central portion 74. The rotary positioning structure can selectively position the second air outlet portion 16 at a plurality of different circumferential positions. In the illustrated embodiment, the rotational detent structure includes a plurality of detents 88 and at least one spring-loaded detent projection 90. A plurality of detents 88 are provided on the second mounting surface 70 of the bottom wall 52 of the housing 44 and are spaced apart in the rotational direction of the housing 44, and spring-loaded detent projections 90 are provided on the first mounting surface 68 of the central portion 74. The spring-loaded positioning projections 90 are adapted to selectively cooperate with the plurality of positioning slots 88 to selectively position the second air outlet portion 16 at a plurality of different circumferential positions in the rotational direction of the housing 44. In the illustrated embodiment, the detents 88 are evenly spaced in the direction of rotation. The number and spacing of the positioning slots 88 is determined by design requirements, and the increased number of positioning slots 88 can correspondingly bring more stages of angular positioning, thereby bringing more choices and finer angular adjustment for users. The illustrated embodiment includes one spring-loaded locating tab 90, but in other embodiments, more than one spring-loaded locating tab 90 may be included.

The first mounting surface 68 is provided with a recess 92, and the recess 92 has a recess bottom 94 and a recess opening 96. The at least one spring-loaded detent projection 90 includes a detent 98, a spring 100, and a stop 102. The retainer 98 is positioned within the recess 92 and partially exposed from the recess opening 96, i.e., partially beyond the first mounting surface 68, to snap into a retainer slot 88 therein. The resilient member 100 is disposed at the recess bottom 94 and resiliently biases the positioning member 98 toward the recess opening 96. The stopper 102 is disposed in the groove opening 96 to prevent the positioning member 98 from separating from the groove 92. When the positioning member 98 faces the flat surface portion of the bottom wall 52, the positioning member 98 is pressed into the recess 92 by the flat surface portion, and the elastic member 100 is compressed. When the housing 44 is rotated to a position in which the positioning slot 88 is aligned with the positioning member 98, the positioning member 98 is pushed into the positioning slot 88 by the elastic restoring force of the elastic member 100, and positioning between the housing 44 and the mounting seat 66 is performed. As the housing 44 continues to rotate, the edge of the detent 88 of the bottom wall 52 slides over the arcuate surface of the detent 98, pressing the detent 98 into the recess 92. Specifically, the surface of the positioning element 98 facing the second mounting surface 70 is an arc-shaped surface, which may be a cylindrical or spherical body with an end surface in an arc-shaped surface, and in this embodiment, the positioning element 98 is a metal ball. An example of the elastic member 100 may be a compression spring. The retainer 102 allows the retainer 98 to be exposed from the recess 92 but prevents the retainer ball 98 from completely exiting the recess 92, and may be, for example, an element having an internal bore with a diameter smaller than the diameter of the retainer 98, such as a ring. In some embodiments, the limiting member 102 may not be provided. The end of the elastic member 100 abutting against the positioning member 98 is also fixedly connected to the positioning member 98, so as to prevent the positioning member 98 from completely separating from the groove 92.

Although in the above-described embodiment the positioning slot 88 is provided on the second mounting surface 70 and the positioning projection 90 is provided on the first mounting surface 68, in other embodiments the positioning slot 88 and the positioning projection 90 may be interchanged. Accordingly, the positioning groove 88 is provided on one of the first mounting surface 68 and the second mounting surface 70, and the positioning projection 90 is provided on the other of the first mounting surface 68 and the second mounting surface 70.

The embodiment of the invention provides a neck-wearing fan, which is provided with a first air outlet part for cooling a neck and a second air outlet part for cooling other parts of a human body, such as a face or a back, wherein an air outlet of the second air outlet part can be adjusted in angle, so that air in the second air outlet part can be blown to different parts of the face or the back, and various cooling requirements of a user are met. In some embodiments, the second air outlet part is mounted on the neck-wearing bracket through a mounting seat, and the mounting seat has a certain thickness, so that the structure and the mounting strength of the mounting seat are increased. In some embodiments, the outer shell of the second air outlet part is closely adjacent to the mounting surface of the mounting seat, the force arm of the connecting shaft between the outer shell of the second air outlet part and the mounting surface of the mounting seat is reduced, and the risk of breakage of the connecting shaft in the use process is reduced. In some embodiments, a rotation positioning structure is arranged between the housing of the air outlet part and the mounting seat, the air outlet part can be selectively positioned at a plurality of different circumferential positions, the air outlet position can be conveniently adjusted and positioned by a user, and angle perception feedback can be provided for the user in the adjusting process.

Fig. 9 to 21 illustrate a neck fan 210 according to another embodiment of the present invention.

Referring to fig. 9 to 11, the neck fan 210 of the present embodiment includes a neck bracket 212, a first air outlet portion 214 and a second air outlet portion 216.

The neck-worn support 212 has a curved shape suitable for wearing on the neck of a human body, and is provided with a space for accommodating batteries and other elements inside, and a flow passage through which a gas flow flows. In the illustrated embodiment, the neck wear brace 212 has two brace portions 218, 220 that are rotatable relative to each other, the two brace portions 218, 220 being connected by a rotating structure 22. The two leg portions 218, 220 are symmetrical about an axis of symmetry D. The rotating structure 22 defines an axis of rotation X, and the axis of symmetry D is spaced from and parallel to the axis of rotation X. In other embodiments, the neck wear support 212 may not have the rotation structure 22, i.e. the mutual rotation function.

In the illustrated embodiment, the first air outlet portion 214 is provided on both of the two frame portions 218, 220 of the neck wear frame 212. In other embodiments, the first air outlet portion 214 may be disposed on only one of the support portions. The neck-worn support 212 has two end portions 224, and the second air outlet portion 216 is provided on the inner side of each end portion 224 facing the neck of the human body. In other embodiments, the second air outlet portion 216 may be provided at only one of the end portions 224. Moreover, the second air outlet portion 216 can also be disposed at the outer side of the end portion 224 facing away from the neck of the human body. Likewise, in other embodiments, the second air outlet portion 216 may not be disposed at the end portion 224.

Referring to fig. 12 and 13, the first air outlet portion 214 is provided with a first receiving cavity 226 and a first air outlet 228 in fluid communication with the first receiving cavity 226. The first receiving cavity 226 is provided with a first fan 230 therein, and the first air outlet 228 is opened on the neck support 212 of the neck fan 210. Each end 224 of the neck support 212 facing away from the neck of the person is provided with a first inlet opening 232, and the first inlet openings 232 are in fluid communication with the first receiving cavity 226. Thus, when the first fan 230 operates, air is drawn from the first air inlet 232, and the generated air flows through the flow channel in the bracket portion and then is blown out through the first air outlet 228. The first air outlets 228 may be disposed along the extending direction of the frame portions 218 and 220, so that the wind generated by the first fan 230 is blown toward the neck of the human body.

An axle tube 234 is fixedly disposed within the end 224 of the neck mount 212. The first fan 230 includes a stator assembly 236 and a rotor assembly 238. Stator assembly 236 is secured to shaft tube 234 for energizing to generate a magnetic field. The rotor assembly 238 includes a fan wheel 238A, and a permanent magnet such as a magnet is fixedly mounted inside the fan wheel 238A. The rotor assembly 238 also includes a shaft 240 fixed relative to the impeller 238A, the shaft 240 being rotatably supported within the shaft tube 234. Stator assembly 236 is energized to generate a magnetic field that magnetically drives the permanent magnets to rotate, thereby rotating impeller 238A.

Referring to fig. 14 to 16, the second air outlet portion 216 includes a housing 244 having a second receiving cavity 242, and a second fan 246 received in the second receiving cavity 242. The housing 244 is provided with a second intake 248 and a second outtake 250 communicating with the second receiving chamber 242. The housing 244 is mounted to the end 224 of the neck mount 212 and is rotatable relative to the end 224 to adjust the position of the second outlet vent 250.

Specifically, in the illustrated embodiment, the housing 244 includes an end wall 256 and an annular side wall 258, the second intake vent 248 is disposed on the end wall 256, and the second exhaust vent 250 is disposed on the annular side wall 258. Second fan 246 includes a stator assembly 262 and a rotor assembly 264. Rotor assembly 264 includes a permanent magnet 264A in magnetic driving engagement with stator assembly 262, and a fan wheel 264B fixed relative to permanent magnet 264A. The permanent magnet 264A may be a magnet, such as a permanent magnet ring, disposed inside the fan wheel 264B. Rotor assembly 264 also includes a shaft 265 that is fixed relative to fan wheel 264B. Stator assembly 262 is energized to generate a magnetic field that magnetically drives permanent magnet 264A to rotate, which in turn drives fan wheel 264B to rotate. The user can adjust the position of the second air outlet 248 in the rotating direction by dialing the housing 244, i.e. adjust the blowing angle of the second air outlet 248. In the illustrated embodiment, the second air outlet portion 216 is mainly used for blowing air toward the face, so that the air outlet angle of the second air outlet portion 216 can be adjusted by moving the housing 244, so that the air can be blown to different parts of the face.

Referring also to fig. 17, in the illustrated embodiment, the neck mount 212 has a mounting 266 on a side wall thereof, and the housing 244 of the second outlet portion 216 is rotatably mounted to the mounting 266. The mounting base 266 may be an integrally formed part of the neck brace 12 or may be a separate part that is mounted to the neck brace 212, as the present invention is not limited in this respect.

In the illustrated embodiment, the mounting 266 protrudes from the surface of the neck mount 212 such that the mounting 266 has a thickness that increases the structural strength of the mounting 266 while facilitating a reduction in the thickness of the entire neck mount sidewall. In other embodiments, however, the mounting 266 may be flush with the surface of the neck brace 212 or recessed relative to the surface of the neck brace 212. In the illustrated embodiment, the mounting base 266 is circumferentially grooved (see fig. 10) on its outer periphery such that the mounting base 266 is formed in an hourglass-like configuration with large ends and a small middle, i.e., the mounting base 66 has a cross-sectional dimension at both ends that is greater than the cross-sectional dimension at the middle.

The mount 266 is fixedly provided with the shaft tube 260, and the stator assembly 262 of the second fan 246 is fixedly installed outside the shaft tube 260. The rotating shaft 265 of the rotor assembly 264 of the second fan 246 is rotatably supported in the shaft tube 260. That is, in this embodiment, the second fan 246 of the second air outlet portion 216 is mounted on the mounting base 266, and therefore mounted on the neck bracket 212, and when the user rotates the housing 244 to adjust the air outlet angle, the second fan 246 will not be rotated, thereby improving the reliability and the service life of the structure. In the illustrated embodiment, the mount 266 includes an outer ring portion 272 and a central portion 274. An outer ring portion 272 and a central portion 274 project from the surface of the neck mount 212, and the axle tube 260 is disposed on the central portion 274, and in some embodiments, the housing 244 is rotatably coupled to the outer ring portion 272.

Referring to fig. 15 to 17, the housing 244 of the second air outlet portion 216 is rotatably mounted to the mounting base 266 by a support bracket 300. The support 300 is fixed to the mount 266 and thus may also be considered part of the mount 266. The housing 244 is rotatably connected to the support frame 300 and covers the periphery of the support frame 300. The second fan 246 defines an axial direction, and the support 300 is fixedly coupled at an axially inner end to the mounting block 266 and rotatably coupled at an axially outer end to the housing 244. In the illustrated embodiment, a mounting block 302 is disposed at a central portion of the axially outer end of the support frame 300, a connecting hole 310 is disposed in the end wall 256 of the housing 244, and a locking member 312 is fixedly connected to the mounting block 302 after passing through the connecting hole 310 of the housing 224. In the illustrated embodiment, a connecting tube 304 protrudes axially outward from the middle of the mounting platform 302, the connecting tube 304 has a threaded hole 306 therein, and the locking member 312 is a screw 312 that passes through the connecting hole 310 of the housing 244 and then is screwed into the threaded hole 306 of the connecting tube 304. The locking member 312 has a head portion 314 and a shank portion 315 extending from the head portion 314, and the aperture of the coupling hole 310 is smaller than the diameter of the head portion 314 but larger than the diameter of the shank portion 315. Thus, the locking member 312 restricts the housing 244 from axially disengaging the support bracket 300, but allows the housing 244 to axially rotate.

Referring to fig. 15 and 16, the mounting block 302 is provided with a plurality of detents 308 around the connecting tube 304 in the annular region around the connecting tube 304. The inside of the end wall 256 of the housing 244 is provided with a spring-loaded locating boss 320. The positioning projection 320 is adapted to selectively cooperate with the plurality of positioning slots 308 to selectively position the second air outlet 250 of the housing 244 at a plurality of different circumferential positions in a rotational direction of the housing 244 when the housing 244 is rotated. In the illustrated embodiment, the detents 308 are evenly spaced along the direction of rotation. The number and spacing of the positioning slots 308 are determined according to design requirements, and the increased number of the positioning slots 308 can correspondingly bring more stages of angular positioning, thereby bringing more choices and finer angular adjustment for users.

The inner side of the end wall 256 of the housing 244 is provided with a recess 316, and the positioning projection 320 is received in the recess 316. The groove 316 has a groove bottom and a groove opening 318 opposite the groove bottom. In the illustrated embodiment, the recess 316 is formed by a cylindrical member attached to the inside of the end wall 256, the end of the cylindrical member facing the holder 300 being open, forming the recess opening 318. The positioning protrusion 320 includes a positioning member 322, an elastic member 324, and a stopper 326. The positioning member 322 is disposed in the recess 316 and partially exposed from the recess 316 to be snapped into one of the positioning slots 308. The elastic member 324 is disposed at the bottom of the recess and elastically biases the positioning member 322 toward the opening 318 of the recess. The position-limiting element 326 is disposed in the opening 318 to prevent the positioning element 322 from separating from the groove 316. When the positioning member 322 faces the flat surface portion of the mounting block 302, the positioning member 322 is pressed into the recess 316 by the flat surface portion, and the elastic member 324 is compressed. When the housing 244 rotates to a position where the positioning slot 308 is aligned with the positioning member 322, the positioning member 322 is pushed into the positioning slot 308 by the elastic restoring force of the elastic member 324, so as to form a positioning between the housing 244 and the supporting frame 300. As the housing 244 continues to rotate, the edge of the detent 308 of the mounting platform 302 slides over the arcuate surface of the positioning member 322, pressing the positioning member 322 into the recess 316. Specifically, the surface of the positioning element 322 facing the mounting platform 302 is an arc surface, which may be a cylindrical body or a spherical body with an end surface being an arc surface, in this embodiment, the positioning element 322 is a metal ball. An example of the elastic member 324 may be a compression spring. The retainer 326 allows the positioning member 322 to be exposed from the recess 316 but prevents the positioning ball 322 from completely escaping from the recess 316, and may be, for example, a member having an inner bore with a diameter smaller than the diameter of the positioning member 322, such as a ring. In other embodiments, the limiting member 326 may not be provided. The end of the elastic member 324 abutting against the positioning member 322 is also fixedly connected to the positioning member 322, so as to prevent the positioning member 322 from completely separating from the recess 316.

Although in the above-described embodiment the detent 308 is provided on the mounting table and the detent projection 320 is provided inside the end wall 256 of the housing 244, in other embodiments the positions of the detent 308 and the detent projection 320 may be interchanged. Thus, the detent 308 is provided on one of the mounting block 302 and the end wall 256 of the housing 244, and the detent projection 320 is provided on the other of the mounting block 302 and the end wall 256 of the housing 244.

Through the rotation positioning structure that sets up spring-loaded's location arch and constant head tank between shell 244 and support frame 300, can selectively fix a position the second air outlet 250 of shell 244 in a plurality of different circumferential positions, convenience of customers adjusts and fixes a position the air outlet position to can provide angle perception feedback for the user in the adjustment process.

The axial inner end of the support frame 300 is provided with a base 350, and the base 350 is annular and is fixedly connected with the outer annular portion 272 of the mounting seat 266. Support frame 300 includes a plurality of support bars 352, each support bar 352 being located outside of impeller 264B and connected between base 350 and mounting block 302, each support bar 352 having an axial extension 354 and a radial extension 356, axial extension 354 extending axially from base 350, radial extension 356 extending radially from an axially outer end of axial extension 354 to fixedly connect with mounting block 302. That is, these support bars 352 collectively support the mounting platform 302 beyond the axially outer end of the fan wheel 264B. In the illustrated embodiment, four support bars 352 are provided, evenly arranged in the circumferential direction, but in other embodiments more or less than 4 support bars 352 may be provided. In the illustrated embodiment, the axial extension 354 is coupled to the base 350 at a location closer to the inner edge of the base 350 (see fig. 15), the outer edge of the base 350 is smoothly coupled to the outer edge of the mounting block 266, and the outer edge of the end of the housing 244 facing the base 350 is flush with the outer edge of the base 266, thereby providing a smooth coupling between the base 350, the housing 22, and the mounting block 266 (see fig. 10).

In the illustrated embodiment, a through-hole 284 is provided between central portion 274 and outer annular portion 272 of mount 266, through-hole 284 being disposed around shaft tube 260. The first receiving cavity 226 of the first air outlet portion 214 is in fluid communication with the through hole 284. The axially inner end of the annular sidewall 258 and the base 350 may form a gap in the axial direction, and the through hole 284 is in fluid communication with the gap, and the gap may be used as another part of the first intake opening 232 of the first air outlet portion 214. Thus, the first air outlet portion 214 is provided with the first air inlet 232 at the inner side in addition to the first air inlet 232 formed at the outer side of the end portion 224 of the neck-worn support 212, so that the air inlet amount is increased, and the air outlet amount is increased accordingly. Alternatively, at least a portion of the first intake opening 232 of the first air outlet portion 214 is disposed at the outer side, and the gap between the annular sidewall 258 and the base 350 serves as another portion of the first intake opening 232. In some embodiments, when the base 350 is not disposed between the axially inner end (i.e., the end surface) of the annular sidewall 258 and the inner side surface of the neck mount 212, a gap is formed between the axially inner end (i.e., the end surface) of the annular sidewall 258 and the inner side surface of the neck mount 212, the through hole 284 is in fluid communication with the gap, and at least a portion of the first air inlet 232 of the first air outlet portion 214 is disposed outside the neck mount 212, and the gap serves as another portion of the first air inlet 232.

Of course, in other embodiments, the first air inlet 232 may be disposed only outside the end portion 224, and the first air inlet 232 may not be disposed inside the end portion 224.

Although the housing 244 of the second air outlet portion 216 is rotatably connected to the mounting seat 266 by the supporting frame 300 in this embodiment, in other embodiments, the housing 244 may be directly connected to the mounting seat 266 without the supporting frame 300. That is, the rotatable connection referred to herein includes a direct or indirect connection.

The rotating structure 22 will be described in detail below.

As shown in fig. 10 to 13, the neck mount 212 includes two mounts 218 and 220 symmetrical about the symmetry axis D, and the rotating structure 22 is rotatably connected between the two mount portions 218 and 220. The rotating structure 22 includes a first rotating portion 421 and a second rotating portion 422, the first rotating portion 421 is fixedly connected to one of the bracket portions 220, the second rotating portion 422 is fixedly connected to the other bracket portion 218, and the first rotating portion 421 and the second rotating portion 422 are rotatably connected about a rotating axis X which is spaced apart from and parallel to the symmetry axis D. The first rotating portion 421 is provided with a positioning slot 411, the second rotating portion 422 is provided with a positioning protrusion 420 loaded elastically, and when the two support portions 218 and 220 rotate relatively, the positioning protrusion 420 loaded elastically can be selectively clamped into the positioning slot 411.

In the present embodiment, by providing the rotating structure 22 between the two bracket portions 218 and 220, the first rotating portion 421 and the second rotating portion 422 of the rotating structure 22 are rotatably connected, so that the two bracket portions 218 and 220 can rotate relatively. When the user finishes using the fan, the two support parts 218 and 220 are rotated to enable the neck fan to be folded (namely, the neck fan is changed from the state shown in fig. 9 to the state shown in fig. 18 and finally to the state shown in fig. 19), so that the neck fan is convenient for the user to carry or store; when the user needs to use the neck fan, the two support parts 218 and 220 can be rotated reversely to open the neck fan (i.e. the neck fan is changed from the configuration shown in fig. 19 to the configuration shown in fig. 9), so that the user can wear the neck fan conveniently. Moreover, through mutually supporting of spring-loaded's location arch 420 and constant head tank 411 and fixing a position, the user can the perception turned angle when rotating two support portions 218, 220, and rotate the angle of accomplishing two support portions 218, 220 and be difficult to change easily, convenience of customers ' use has increased this neck and has worn the practicality of fan, has promoted user's use experience.

In the present embodiment, the first rotating portion 421 and the second rotating portion 422 are stacked along the rotation axis X (the vertical position relationship between the first rotating portion 421 and the second rotating portion 422 can be changed), and the rotation axis X of the rotating structure 22 is parallel to the symmetry axis D of the two bracket portions 218 and 220 (i.e., when viewed from fig. 18 and 19, the two bracket portions 218 and 220 can be folded in a rotating manner in the direction indicated by the arrow S; when the two bracket portions 218 and 220 are rotated relatively, the side walls of the two bracket portions 218 and 220 can be moved closer to or away from each other).

Specifically, in the present embodiment, the two frame portions 218 and 220 are connected by the rotating structure 22 to form a U-shaped structure, and a wearing cavity for the neck fan to be worn around the neck of the user is formed between the two frame portions 218 and 220.

As shown in fig. 12, 13, 20 and 21, the first rotation portion 421 and the second rotation portion 422 are connected such that only relative rotation between the first rotation portion 421 and the second rotation portion 422 about the rotation axis X is permitted and linear movement between the first rotation portion 421 and the second rotation portion 422 in the direction of the rotation axis X is not permitted. Specifically, in the present embodiment, the first rotating portion 421 is provided with a protruding shaft 412, the second rotating portion 422 is provided with a rotating hole 424, and the protruding shaft 412 is inserted into the rotating hole 424 and can rotate in the rotating hole 424, so that the first rotating portion 421 and the second rotating portion 422 are rotatably connected. The rotating structure 22 further includes a locking member 423, one end of the locking member 423 is fixed to the protruding shaft 412, the other end of the locking member 423 is located on a side of the second rotating portion 422 away from the first rotating portion 421, and a radial dimension of the other end of the locking member 423 is larger than a radial dimension of the rotating hole 423.

Specifically, in the present embodiment, the locking member 423 is provided with a flange 431 protruding radially outward, the flange 431 has a radial dimension larger than that of the rotation hole 424, the flange 431 abuts against the second rotation portion 422, and the locking member 423 is used to prevent the first rotation portion 421 and the second rotation portion 422 from being disengaged from each other. The locking member 423 may be a screw, a rivet, a pin, etc., and is not limited thereto.

The spring-loaded positioning protrusion 420 includes a resilient member 430, a positioning member 432, and a stop member 434. The positioning member 432 is positioned in a recess 428 of the second rotating portion 422 and partially exposed out of the recess 428. The groove 428 has a groove bottom 428A and a groove opening 428B in a direction parallel to the rotational axis. The elastic member is disposed at the groove bottom 428A and elastically biases the positioning member 432 toward the groove opening 428B. The position-limiting member 434 is disposed in the groove opening 428B to prevent the position-limiting member from falling out of the groove 428. When the two bracket portions 218, 220 are rotated relatively, the positioning member 432 can be locked into the positioning slot 411 under the driving of the elastic biasing force of the elastic member 430.

Specifically, a surface of the positioning element 432 facing the first rotating portion 421 is an arc surface, the positioning element 432 may be a cylindrical body or a spherical body with an end surface being the arc surface, and in this embodiment, the positioning element 432 is a metal ball. An example of the elastic member 430 may be a compression spring. The stop member 434 allows the positioning member 432 to be exposed out of the groove 428 but prevents the positioning member 432 from being completely removed from the groove 428, and may be, for example, a member having an inner hole with a diameter smaller than that of the positioning member 432, such as a ring member, and the positioning member 432 is partially exposed out of the groove 428 through the inner hole. In other embodiments, the position-limiting member 434 may not be provided. The end of the elastic member 430 abutting against the positioning member 432 is also fixedly connected to the positioning member 432, so as to prevent the positioning member 432 from being completely separated from the groove 428.

In the present embodiment, the number of the positioning grooves 411 is plural, and the plural positioning grooves 411 are uniformly spaced in the circumferential direction of the first rotating portion 421. But in other embodiments may be non-uniformly arranged.

Specifically, in the present embodiment, when the two bracket portions 218 and 220 rotate relatively, the position of the positioning element 432 can be switched between being inserted into the positioning slot 411 and being located in two adjacent positioning slots 411. When the positioning element 432 is located between two adjacent positioning slots 411 (i.e., the positioning element 432 abuts against the outer wall of the first rotating portion 421), the positioning element 432 retracts in the groove 428 toward the side away from the first rotating portion 421 (i.e., the positioning element 432 moves upward as viewed in fig. 21), and the elastic element 430 is compressed and accumulated; when the position of the positioning member 432 is moved to correspond to the positioning slot 411, the positioning member 432 is driven by the elastic member 421 to be inserted into the positioning slot 411 (i.e., the positioning member 432 is driven by the restoring force of the elastic member 421 to be inserted into the positioning slot 411), so as to fix the rotation angle between the two bracket portions 218 and 220. The position of setting element 432 is in going into the constant head tank 411 and when being located constantly changing between two adjacent constant head tanks 411, can provide the damping when rotatory for the user and feel, makes the user can the perception turned angle when rotating two support portions 218, 220, promotes user's use and experiences.

In the present embodiment, the rotary structure 22 is a cylindrical structure. The pivot structure 22 projects toward the front side of the bracket portion as compared to the bracket portions 218, 220. The front side of the support part means that the side facing upwards when the neck is worn on the neck of a user is the front side, and the side facing downwards is the rear side. The two leg portions 218, 220 are respectively provided with a connecting edge 440 facing each other, and a front side 442 and a rear side 444 on both sides of the connecting edge 440. One of the bracket parts 220 fixedly connected with the first rotating part 421 is provided with a first arc-shaped notch 446 matched with the outer contour of the second rotating part 422, and the first arc-shaped notch 446 is positioned at the position where the connecting edge 440 of the one of the bracket parts 220 is connected with the adjacent front side edge 442. The other bracket portion 218 fixedly connected to the second rotating portion 422 is provided with a second arc notch 448 matching with the outer contour of the first rotating portion 421, and the second arc notch 448 is located at a position where the connecting edge 440 of the other bracket portion 220 meets the adjacent front side edge 442. Compare with the structure of revolution 22 in the middle of setting (the structure of revolution 22 sets up the intermediate position in front and back direction promptly for axis of rotation X coincides with symmetry axis D), two support portions 218, 220 can revolute structure of revolution 22 through arc breach 446, 448 and rotate and to be close to when this scheme is folded, reduce the volume that the fan was worn to the neck, save space. In the illustrated embodiment, the arcuate notches 446,448 are one-quarter circle in arc length, the rotating structure 22 is cylindrical, and one half of the rotating structure 22 protrudes out of the front side of the holder portion (fig. 11). In other embodiments, the rotating structure 22 may protrude toward the rear side of the bracket portion than the bracket portion.

Turning structure as shown in fig. 20 and 21, in the present embodiment, the holder portions 218 and 220 are both hollow. A first cavity 413 is defined within the frame portions 218, 220, the first cavity 413 serving as an airflow passage 449 (fig. 13) and/or a location for housing various components, such as a circuit board 460, a battery 470 (fig. 13), etc. The second cavity 450 is disposed in the rotating structure 22, and the first cavity 413 in the bracket portions 218 and 220 is communicated with the second cavity 450 in the rotating structure 22. When the circuit board 460 is disposed in only one of the two rack portions 218, 220, i.e., the air outlet portions of the two rack portions share one circuit board 460, the second cavity 450 can facilitate the routing of cables (e.g., connecting cables between the circuit board 460 and the stator assemblies 36, 236) between the two rack portions.

The turning structure 22 described herein may be used in the embodiment of fig. 1 to 8 in addition to the present embodiment. In some embodiments, the rotating structure 22 can also be used to connect two support portions of any neck-mounted fan, regardless of whether the support portion has the air outlet portion or how many air outlet portions. In some embodiments, the rotating structure 22 can also be applied to any neck-worn device having two stand portions, not limited to a neck-worn fan, for rotatably connecting the two stand portions, so that the two stand portions can be rotatably folded together, thereby reducing the occupied space and facilitating carrying and storage; for example, the rotary structure 22 may also be applied to a neck massager.

The embodiment of the invention provides a neck-wearing fan, which is provided with a first air outlet part for cooling a neck and a second air outlet part for cooling other parts of a human body, such as a face or a back, wherein an air outlet of the second air outlet part can be adjusted in angle, so that air in the second air outlet part can be blown to different parts of the face or the back, and various cooling requirements of a user are met. In some embodiments, the second fan of the second air outlet portion is connected to the mounting base, and therefore the second fan is mounted on the neck-wearing support, so that when the angle of the air outlet of the second air outlet portion is adjusted, only the shell of the second air outlet portion needs to be rotated, the fan does not need to be rotated, and reliability and service life of the second air outlet portion are improved. In some embodiments, the rotary positioning structure is arranged, the second air outlet part can be selectively positioned at a plurality of different circumferential positions, the air outlet position can be conveniently adjusted and positioned by a user, and angle perception feedback can be provided for the user in the adjusting process.

In some embodiments, the two support parts of the neck fan or other neck wearing devices are connected by adopting a rotating structure, and when the user uses the device, the neck fan can be folded by rotating the two support parts, so that the device is convenient for the user to carry or store; when the user needs to use, the two support parts rotate reversely, so that the user can wear and use the support device conveniently. Moreover, through mutually supporting of the positioning bulge and the positioning groove of elastic loading for positioning, a user can sense the rotation angle when rotating the two support parts, the angle of the two support parts after the rotation is completed is not easy to change easily, the use of the user is facilitated, the practicability of the neck-wearing fan is improved, and the use experience of the user is improved.

The above embodiments are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. A neck-wearing fan comprises a first air outlet part and a second air outlet part, wherein the first air outlet part is provided with a first accommodating cavity, a first air inlet and a first air outlet which are communicated with the first accommodating cavity in a fluid manner, the first air outlet is arranged on a neck-wearing bracket of the neck-wearing fan, the first accommodating cavity is internally provided with a first fan, the first fan operates to suck air from the first air inlet and generate wind which is blown out through the first air outlet, it is characterized in that the side wall of the neck wearing bracket is provided with a mounting seat, the second air outlet part comprises a shell provided with a second accommodating cavity, and a second fan accommodated in the second accommodating chamber, the housing being provided with a second air outlet in fluid communication with the second accommodating chamber, the housing is mounted to the mount and is rotatable relative to the mount to adjust the position of the second outlet.

2. The neck worn fan of claim 1, wherein the mounting block includes a first mounting surface facing the housing, the housing includes a second mounting surface facing the mounting block, and a rotational positioning structure is provided between the first mounting surface and the second mounting surface.

3. The neck fan as claimed in claim 2, wherein the rotational positioning structure comprises a plurality of positioning grooves and at least one spring-loaded positioning protrusion, the plurality of positioning grooves are disposed on one of the first mounting surface and the second mounting surface and are spaced apart along the rotational direction of the housing, the at least one spring-loaded positioning protrusion is disposed on the other of the first mounting surface and the second mounting surface, and the at least one spring-loaded positioning protrusion is adapted to selectively engage with the plurality of positioning grooves to selectively position the second air outlet portion at a plurality of different circumferential positions along the rotational direction of the housing.

4. The neck worn fan of claim 3 wherein the one of the first and second mounting surfaces on which the at least one spring-loaded locating tab is located has a recess with a recess bottom and a recess opening, the at least one spring-loaded locating tab comprising:

the positioning piece is positioned in the groove, and part of the positioning piece is exposed out of the opening part of the groove to be clamped in one of the positioning grooves; and

and the elastic piece is arranged at the bottom of the groove and applies elastic bias towards the opening part of the groove to the positioning piece.

5. The neck worn fan of any one of claims 2-4, wherein the mounting block includes a protruding central portion, the first mounting surface is disposed on the central portion, and the rotational positioning structure is disposed between the central portion and the housing.

6. The neck fan of claim 5 wherein the central portion defines a mounting hole, the housing being rotatably engaged with the mounting hole by a connecting shaft, the rotational positioning structure being disposed around the mounting hole.

7. The neck fan of claim 1 wherein the first receiving cavity is located at an end of the neck support, the end having an outer side away from the neck of the human body and an inner side close to the neck of the human body, the mounting seat being disposed at the inner side and including an outer ring portion and a central portion, a through hole being provided between the central portion and the outer ring portion, a gap being formed between the outer ring portion and the housing, the first receiving cavity of the first air outlet portion being in fluid communication with the through hole, the through hole being in fluid communication with the gap; at least part of the first air inlet is arranged on the outer side, and the gap is used as the other part of the first air inlet.

8. The neck fan as claimed in claim 1, wherein the housing comprises a bottom wall, a top wall opposite to the bottom wall, and an annular side wall connected between the bottom wall and the top wall, the bottom wall, the annular side wall, and the top wall together form the second receiving chamber, the top wall is provided with a second air inlet in fluid communication with the second receiving chamber, and the second air outlet is provided on the annular side wall; a shaft tube is fixedly arranged on one side, located in the second accommodating cavity, of the bottom wall or the top wall, the second fan comprises a stator assembly and a rotor assembly, the stator assembly is fixed on the shaft tube, and the rotor assembly comprises a permanent magnet in magnetic fit with the stator assembly and a fan wheel fixed relative to the permanent magnet; the other side of the bottom wall departing from the second accommodating cavity is rotatably connected with the mounting seat.

9. The neck worn fan of claim 1, wherein the neck worn support comprises two support portions and a rotating structure connected between the two support portions, the two support portions are symmetrical about a symmetry axis, the rotating structure comprises a first rotating portion and a second rotating portion, the first rotating portion is fixedly connected with one of the support portions, the second rotating portion is fixedly connected with the other support portion, the first rotating portion and the second rotating portion are rotatably connected around a rotation axis, and the rotation axis is spaced from and parallel to the symmetry axis.

10. The neck fan of claim 1 wherein the housing is rotatably coupled to the mount by a support bracket fixedly coupled to the mount, the housing being rotatably coupled to the support bracket, the second fan being coupled to the mount.

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