CN107477007B - Fan with fan body - Google Patents

Abstract

The invention is suitable for the field of household appliances, and discloses a fan which comprises a fan head component, a base component and a bracket connected between the fan head component and the base component, wherein an arc-shaped track is arranged on the back of the fan head component, which faces the bracket, and at least two groups of roller groups which are arranged in the arc-shaped track in a sliding way are arranged on the end part of the bracket, which faces the fan head component. According to the invention, the arc-shaped track is slid to different positions, so that the fan head assembly can be controlled to be in different pitching states, and the pitching function of the fan head assembly is effectively realized. Because the connection part of the bracket and the fan head component is positioned at the back of the fan head component, the connection part of the bracket and the fan head component can not be directly exposed in the sight of a user, the visual effect of the appearance of the fan is effectively improved, the problems that the existing fan product is serious in homogeneity and has no differentiated selling point are well solved, and the popularization and the sales of the product are facilitated.

Description

Fan with fan body

Technical Field

The invention relates to the field of household appliances, in particular to a fan.

Background

In order to realize the up-down pitching function, the stand is generally designed into a U-shaped stand, and two ends of the U-shaped stand are respectively connected with two side parts of the fan head assembly through a hinge structure, so that the fan head assembly can perform rotary motion around the hinge axis of the hinge structure, and the up-down pitching function of the fan is realized. The fan adopts this way to realize the pitching function from top to bottom, in the specific application, there are following disadvantages:

1) The pitching mechanism composed of the U-shaped bracket and the hinge structure is complex in structure, and the installation process of the production and manufacturing process is complex, so that the production cost is high, and the production efficiency is low;

2) The connection part of the bracket and the fan head component is exposed at the two side parts of the fan head component, so that the visual effect of the appearance of the product is seriously affected;

3) When the fan head assembly moves in a pitching mode, the distance between the gravity center of the fan head assembly and the axis of the hinge is changed, and the gravity center of the fan head assembly is poor in stability in the pitching process, so that the phenomenon of low head pitching failure is easy to occur for the relatively heavy fan head assembly;

4) The pitching mechanisms of the existing fans are similar, so that the products are seriously homogenized, and the products are not promoted and sold because of no differentiated selling points.

Disclosure of Invention

The invention aims to provide a fan, which aims to solve the technical problems of poor visual effect and serious product homogeneity of products caused by unreasonable design of a pitching mechanism of the existing fan.

In order to achieve the above purpose, the invention provides the following scheme: the fan comprises a fan head assembly, a base assembly and a bracket connected between the fan head assembly and the base assembly, wherein an arc-shaped track is arranged on the back of the fan head assembly towards the bracket, and at least two groups of roller groups which are slidably arranged in the arc-shaped track at intervals are arranged on the end part of the bracket towards the fan head assembly.

As a specific embodiment of the roller group arrangement mode, the bracket is provided with a height direction extending from the base component towards the fan head component, a length direction extending along the arc length direction of the arc-shaped track and a width direction extending along the width direction of the arc-shaped track, and the roller group comprises two first rollers rotatably arranged on two opposite sides of the bracket along the width direction of the bracket respectively.

Optionally, the two first rollers of the same roller set are respectively mounted on two opposite inner sides of the bracket along the width direction of the bracket.

Optionally, two panels with opposite intervals are arranged at the end of the bracket facing the fan head assembly, the two panels are provided with two inner wall surfaces with opposite intervals, the two inner wall surfaces are respectively provided with first installation shafts with the number being half of the total number of the first rollers in a protruding mode, the two first installation shafts on the inner wall surfaces are respectively arranged coaxially in pairs, and the first rollers are respectively and rotatably installed on the first installation shafts.

Optionally, the arc track is equipped with two edges along arc track width direction is located respectively the first arc spout of arc track both sides, every first arc spout all has the open installing port of side direction, arbitrary group two of roller train first gyro wheel all holds respectively in two in the first arc spout.

As an alternative embodiment of the foregoing two first rollers being respectively mounted on opposite inner sides of the frame, two first rollers of the same roller group are respectively mounted on opposite outer sides of the frame along a width direction of the frame.

Optionally, two panels opposite to each other at intervals are arranged at the end of the bracket facing the fan head assembly, the two panels are provided with two outer wall surfaces opposite to each other, the two outer wall surfaces are respectively provided with second installation shafts with the number being half of the total number of the first rollers in a protruding mode, the two second installation shafts on the outer wall surfaces are respectively arranged coaxially in pairs, and the first rollers are respectively installed on the second installation shafts in a rotating mode.

Optionally, the arc track is equipped with the orientation the base subassembly is opened the setting and the opening width is greater than two first dodge mouthful and with the first second arc spout of dodging mouthful intercommunication of interval of outer wall surface, the second arc spout include with first middle groove portion and two edges that the mouth is just opposite are dodged to the first arc track width direction is located respectively the first side groove portion of first middle groove portion both sides, arbitrary group two of roller train first gyro wheel all holds respectively in two in the first side groove portion.

As an alternative embodiment of the above roller set comprising two rollers, the bracket has a height direction extending from the base assembly toward the fan head assembly, a length direction extending along the arc length direction of the arc track, and a width direction extending along the width direction of the arc track, each roller set comprises a second roller rotatably mounted on the bracket, and an axial direction of the second roller is parallel to the width direction of the bracket.

Optionally, the end of support towards fan head subassembly is equipped with two opposite panels of interval, two the panel has two orientations the terminal surface of fan head subassembly, two all concave be equipped with on the terminal surface quantity with the draw-in groove that second gyro wheel quantity is the same, the second gyro wheel includes three interval setting in order to be used for with arc track butt complex rolling part and two respectively connect in respectively adjacent two between the rolling part and the external diameter is less than the screens portion external diameter, every two of second gyro wheel screens portion all assemble respectively in two in the draw-in groove of panel.

Optionally, the clamping groove comprises a notch with an opening width smaller than the outer diameter of the clamping part and an arc-shaped groove bottom communicated with the notch and with an inner diameter larger than or equal to the outer diameter of the clamping part, and each clamping part is assembled in each arc-shaped groove bottom from each notch.

Optionally, the arc track is equipped with the orientation the base subassembly is opened the setting and the opening width is greater than two the second of the interval of panel dodges the mouth and with the second dodges the third arc spout that mouthful intercommunication, the third arc spout include with the second dodges mouthful just opposite second intermediate groove portion and two edges arc track width direction is located respectively the second intermediate groove portion both sides second side groove portion, be located two between the screens portion the roll portion holding is in the intermediate groove portion of second, arbitrary one the three of second gyro wheel roll the portion be one holding respectively in the intermediate roll portion in the intermediate groove portion of second and two holding respectively in two the side roll portion in the second side groove portion.

Optionally, the axes of the roller groups are parallel to each other and located in the same arc-shaped curved surface, and the central axis of the arc-shaped curved surface coincides with the central axis of the arc-shaped track.

Optionally, an arc positioning rack is arranged on a wall surface of the arc track, which is perpendicular to the axial direction of the roller set, a plurality of positioning grooves which are distributed at intervals are arranged on the arc positioning rack, and an elastic positioning structure which is propped against and positioned with the positioning grooves is also arranged at the axle center position of each roller set.

Optionally, the elastic positioning structure comprises a spring embedded in the axle center position of the roller group and a positioning rod, one end of which is connected with the spring, and the other end of which is abutted against the arc-shaped positioning rack; or, the elastic positioning structure comprises a spring plate extending from the axle center position of each roller group to abut against the arc-shaped positioning rack.

Optionally, the inner wall of the positioning groove is a spherical surface, and the outer surface of the end part of the positioning rod or the elastic sheet, which is close to the arc-shaped positioning rack, is a spherical surface matched with the inner wall of the positioning groove.

Optionally, the fan head subassembly includes the air-out base, locates air inlet base of air-out base one side and be used for the drive the air-out base is relative the pendulum mechanism that carries out the pendulum motion of rotating and swinging of air inlet base, the pendulum mechanism including assemble in the pendulum driving motor on the air inlet base and transmission connection the pendulum driving motor with the pendulum transmission pair of air-out base, the arc track is located the back of air inlet base is facing away from the air-out base.

Optionally, the fan is a table or desk fan or a floor or wall fan.

According to the fan provided by the invention, the arc-shaped track is arranged on the back of the fan head assembly, and the end part of the bracket is provided with at least two groups of roller groups which are slidably arranged in the arc-shaped track, so that the arc-shaped track and the roller groups can slide relatively in an arc shape under the action of external force after being assembled together. Because the structures of the arc-shaped track and the roller group are simpler, the manufacturing process and the installation process are simpler, the production cost of the product can be reduced, and the production efficiency of the product can be improved. Meanwhile, as the connecting part of the bracket and the fan head component is positioned at the back of the fan head component, the connecting part of the bracket and the fan head component can not be directly exposed in the sight of a user, the visual effect of the appearance of the fan is effectively improved, the problems that the existing fan product is serious in homogeneity and has no differential selling point are well solved, and the popularization and the sales of the product are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a fan according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a connection state between a fan head assembly and a bracket when a fan provided in the first embodiment of the present invention is exhausted in a horizontal direction;

fig. 3 is a schematic diagram illustrating a connection state between a fan head assembly and a bracket when a fan provided in the first embodiment of the present invention is inclined upwards to exhaust air;

fig. 4 is a schematic diagram of a connection state between a fan head assembly and a bracket when a fan provided in the first embodiment of the present invention vertically outputs air upwards;

FIG. 5 is a schematic view illustrating an assembly of an arc-shaped rail and a bracket according to a first embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of A-A of FIG. 5;

FIG. 7 is an exploded view of an arcuate track and a bracket according to a first embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating an assembly of an arc-shaped rail and a bracket according to a second embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of B-B of FIG. 8;

FIG. 10 is a schematic view illustrating an assembly of an arc-shaped rail and a bracket according to a third embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of C-C of FIG. 10;

FIG. 12 is a schematic diagram illustrating an assembly of a roller set and a bracket according to a third embodiment of the present invention;

fig. 13 is a schematic cross-sectional view of D-D in fig. 12.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" 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.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Embodiment one:

as shown in fig. 1-7, a fan according to a first embodiment of the present invention includes a fan head assembly 1, a base assembly 2, and a bracket 3 connected between the fan head assembly 1 and the base assembly 2, wherein an arc track 4 is disposed on a back of the fan head assembly 1 facing the bracket 3, and at least two sets of roller sets 5 slidably mounted in the arc track 4 are disposed on an end of the bracket 3 facing the fan head assembly 1.

Specifically, the fan head assembly 1 is mainly used for realizing the blowing function of a fan; the base component 2 is mainly used for realizing the placement of the fan in an application occasion; the bracket 3 is mainly used for connecting the fan head assembly 1 and the base assembly 2. After the arc-shaped track 4 and the roller groups 5 are assembled together, the arc-shaped track 4 and the roller groups can still perform relative arc-shaped sliding under the action of external force, so that in specific application, the fan head assembly 1 can be controlled to be in different pitching states by sliding the arc-shaped track 4 to different positions, and further the pitching function of the fan head assembly 1 is effectively realized. Because the structures of the arc-shaped track 4 and the roller group 5 are simpler, the manufacturing process and the installation process are simpler, thereby being beneficial to reducing the production cost of products and improving the production efficiency of the products. Meanwhile, as the connecting part of the bracket 3 and the fan head component 1 is positioned at the back of the fan head component 1, the connecting part of the bracket 3 and the fan head component 1 can not be directly exposed in the sight of a user, the visual effect of the appearance of the fan is effectively improved, the problems of serious homogenization and no differentiated selling point of the existing fan product are well solved, and the popularization and the sales of the product are facilitated.

Preferably, the axes of the roller groups 5 are parallel to each other and located in the same arc-shaped curved surface 101, and the central axis of the arc-shaped curved surface 101 coincides with the central axis 401 of the arc-shaped track 4. Because the axle center of each roller group 5 is positioned in the same arc-shaped curved surface 101 and the central axis of the arc-shaped curved surface 101 coincides with the central axis 401 of the arc-shaped track 4, the gravity center position of the fan head assembly 1 is always kept unchanged in the pitching process of the fan head assembly 1, and the gravity center of the fan head assembly 1 is further stable in the pitching process.

Preferably, the bracket 3 has a height direction extending from the base assembly 2 toward the fan head assembly 1, a length direction extending along an arc length direction of the arc-shaped rail 4, and a width direction extending along a width direction of the arc-shaped rail 4, and the roller group 5 includes two first rollers 51 rotatably mounted on opposite sides of the bracket 3 along the width direction of the bracket 3, respectively. The height direction of the bracket 3 specifically means: when the fan is placed on the floor or the table or the wall, the bracket 3 extends in a direction perpendicular to the floor or the table or the wall. After the fan head assembly 1 and the bracket 3 are assembled together, the first roller 51 can roll in the arc-shaped track 4 under the action of external force. Here, utilize first gyro wheel 51 to realize with arc track 4's sliding fit, like this, when fan head subassembly 1 slides with the every single move function with roller train 5 under the exogenic action, first gyro wheel 51 can roll under the gliding drive of arc track 4 to do benefit to the resistance that reduces fan head subassembly 1 every single move slip in-process received, and then make the every single move operation of fan head subassembly 1 easier to operate, more smooth and easy. Further, each roller group 5 is set to include two first rollers 51 respectively disposed at left and right sides of the width direction of the bracket 3, so that the roller groups 5 support the left and right sides of the width direction of the arc-shaped rail 4, and the roller groups 5 can support the fan head assembly 1 more stably.

Preferably, two first rollers 51 of the same roller group 5 are respectively mounted on opposite inner sides of the bracket 3 in the width direction of the bracket 3. Here, two first rollers 51 of the same roller group 5 are arranged on two opposite inner sides of the bracket 3, so that the width design of the bracket 3 can be conveniently maximized under the condition that the width of the arc-shaped track 4 is fixed, the structural reliability of the bracket 3 is guaranteed, and the roller group 5 can support the fan head assembly 1 more stably and reliably.

Preferably, two panels 31 are disposed at the end of the bracket 3 facing the fan head assembly 1, the two panels 31 have two inner wall surfaces 311 opposite to each other and two outer wall surfaces 312 opposite to each other, the two inner wall surfaces 311 are respectively provided with first mounting shafts 32 with half the total number of the first rollers 51 in protruding mode, the first mounting shafts 32 on the two inner wall surfaces 311 are respectively coaxially disposed in pairs, and the first rollers 51 are respectively rotatably mounted on the first mounting shafts 32. The distance between the two outer wall surfaces 312 is the width of the bracket 3. The two first rollers 51 of the same group of roller groups 5 are respectively arranged on the two first mounting shafts 32 which are coaxially arranged, so that the support points of the support 3 on the left side and the right side of the fan head assembly 1 are guaranteed to be positioned at the same height, and the stability of the support 3 on the fan head assembly 1 is fully guaranteed.

Preferably, the arc track 4 is provided with two first arc sliding grooves 41 respectively located at two sides of the arc track 4 along the width direction of the arc track 4, each first arc sliding groove 41 is provided with a mounting opening 411 which is open in the lateral direction, and two first rollers 51 of any group of roller groups 5 are respectively accommodated in the two first arc sliding grooves 41. The vertical section of the arc-shaped track 4 is approximately in an I shape. The first arc chute 41 is mainly used for being matched with the first rollers 51 positioned at the left side and the right side of the width direction of the bracket 3; the mounting opening 411 is mainly used for ensuring that the first rollers 51 positioned at the left side and the right side of the width direction of the bracket 3 can be assembled with the first arc chute 41 positioned at the two sides of the arc track 4.

Preferably, an arc-shaped positioning rack 6 is arranged on the wall surface of the arc-shaped track 4, which is axially perpendicular to the roller groups 5, a plurality of positioning grooves which are distributed at intervals are arranged on the arc-shaped positioning rack 6, and an elastic positioning structure 7 which is propped against and positioned by the positioning grooves is also arranged at the axle center position of each roller group 5. In this embodiment, an arc-shaped positioning rack 6 is disposed on a wall surface of each first arc-shaped chute 41 facing the axial end surface of the first roller 51. In a specific application, when the fan head assembly 1 performs arc sliding relative to the first roller 51 under the action of external force, the elastic positioning structure 7 can generate elastic deformation under the action of the external force and retract from the positioning groove, so that the pitching motion of the fan head assembly 1 is not affected by the elastic positioning structure 7; and when the fan head assembly 1 is pitching to a required angle, the external force is removed, and the elastic positioning structure 7 stretches out of the jacking positioning groove under the action of the elastic restoring force of the elastic positioning structure, so that the fan head assembly 1 is locked and positioned, and the reliability of the pitching angle positioning of the fan head assembly 1 is fully ensured.

Preferably, the number of the elastic positioning structures 7 is the same as the number of the first rollers 51 and the number of the first mounting shafts 32. Each elastic positioning structure 7 is preferably mounted on each first mounting shaft 32, so that when the first roller 51 rotates under the drive of the arc track 4, the elastic positioning structure 7 does not rotate together with the first roller 51, thereby facilitating the guarantee of the positioning reliability of the elastic positioning structure 7.

Preferably, the elastic positioning structure 7 comprises a spring 71 embedded at the axial center of the roller set 5 and a positioning rod 72 with one end connected with the spring 71 and the other end abutting against the arc-shaped positioning rack 6. The positioning rod 72 is mainly used for being in propped fit with the arc-shaped positioning rack 6; the spring 71 is mainly used for ensuring that the positioning rod 72 can perform telescopic motion relative to the arc-shaped positioning rack 6, so that the positioning rod 72 can not interfere with the sliding of the arc-shaped track 4 in the pitching process of the fan head assembly 1. Of course, in specific applications, the elastic positioning structure 7 is not limited to the combination of the spring 71 and the positioning rod 72, for example: the elastic positioning structure 7 may be formed as a spring plate extending from the axial position of each roller set 5 to abut against the arc-shaped positioning rack 6.

Preferably, the inner wall of the positioning groove is a spherical surface, and the outer surface of the end part of the positioning rod 72, which is close to the arc-shaped positioning rack 6, is a spherical surface matched with the inner wall of the positioning groove. Here, the inner wall of the positioning groove and the outer surface of the end portion of the positioning rod 72, which is matched with the positioning groove, are spherical, so that the matching surfaces of the positioning groove and the positioning rod 72 are smooth and soft, and the arc-shaped positioning rack 6 can easily slide over the positioning rod 72 in the pitching process of the fan head assembly 1, and the phenomenon that the arc-shaped positioning rack 6 and the positioning rod 72 are scratched by each other is avoided. When the elastic positioning structure 7 is configured to include a spring plate extending from the axial position of each roller set 5 to abut against the arc-shaped positioning rack 6, the outer surface of the end portion of the spring plate, which is close to the arc-shaped positioning rack 6, is a spherical surface matching with the inner wall of the positioning groove.

Preferably, the radian of the arc-shaped curved surface 101 formed by the axle center of each roller group 5 is smaller than that of the arc-shaped track 4, so that the size of the bracket 3 is convenient to control, and the cost of the fan is reduced.

Preferably, the number of the roller groups 5 arranged on the bracket 3 is two or three. Theoretically, the greater the number of roller sets 5, the more stable the installation of the fan head assembly 1 will be, but the more costly it will be; in practical application, the number of the roller groups 5 is two or three, and the installation stability of the fan head assembly 1 can already meet the reliability test of products, so that the number of the roller groups 5 is two or three, thereby meeting the reliability design requirement of fans and being beneficial to controlling the cost of products. Of course, the number of roller sets 5 is not limited to two or three sets in a particular application.

As a preferred implementation manner of this embodiment, the number of the roller sets 5 is two, the first rollers 51 are correspondingly provided with four, the bracket 3 is provided with four first mounting shafts 32, and the four first rollers 51 are respectively mounted on the four first mounting shafts 32; a spring 71 and a positioning rod 72 are mounted at the middle position of each first mounting shaft 32; the first mounting shaft 32 is provided with a mounting hole, the spring 71 is accommodated in the mounting hole, the spring 71 is provided with a spiral hollow inner hole, one end of the spring 71 is propped against the bottom of the mounting hole, and the other end of the spring 71 is propped against the positioning rod 72; the positioning rod 72 comprises a support rod body penetrating through the spiral hollow inner hole of the spring 71, a clamping boss protruding at one end of the support rod body and clamped outside the spiral hollow inner hole of the spring 71, and a positioning ball protruding at one end of the clamping boss, wherein the positioning ball is in propping fit with the positioning groove.

Preferably, the fan head assembly 1 comprises an air outlet base 11, an air inlet base 12 arranged on one side of the air outlet base 11 and a swing mechanism for driving the air outlet base 11 to perform swing motion relative to the air inlet base 12, wherein the swing mechanism comprises a swing driving motor assembled on the air inlet base 12 and a swing transmission pair in transmission connection with the swing driving motor and the air outlet base 11, and the arc-shaped track 4 is arranged on the back of the air inlet base 12, which is opposite to the air outlet base 11. Specifically, the air outlet base 11 is the air outlet side of the fan head assembly 1, the air inlet base 12 is the air inlet side of the fan head assembly 1, and in specific application, when the fan is running, external air enters the fan head assembly 1 from the air inlet base 12, and is discharged out of the fan head assembly 1 from the air outlet base 11. The rotary pendulum driving motor is a power output part of the rotary pendulum mechanism, and the rotary pendulum transmission pair is used for converting the power output by the rotary pendulum driving motor into rotary pendulum motion and transmitting the rotary pendulum motion to the air outlet base 11, so that the aim of driving the air outlet base 11 to generate rotary pendulum motion is fulfilled. The rotary and swinging motion is a spatial three-dimensional motion, specifically a combined motion of rotation and swinging, and the motion track is a three-dimensional continuous circumferential closed track. According to the fan head assembly 1 provided by the embodiment, under the drive of the rotary swing mechanism, the air outlet base 11 can perform rotary swing motion relative to the air inlet base 12, so that the conventional design thinking that the air outlet base 11 and the air inlet base 12 are relatively fixed in the existing fan is broken, and as the air outlet base 11 performs three-dimensional rotary swing motion relative to the air inlet base 12, the cool and dazzling feeling is quite sufficient when a product runs, the differential selling point of the fan is further increased, and the popularization and the sales of the product are facilitated. In addition, because the air-out base 11 is driven by the rotary swing mechanism to perform three-dimensional rotary swing motion combining rotation and swing, namely, the air-out base 11 can be driven by the same power mechanism to realize the combination of two swinging modes, the air-out base 11 further realizes the function of spatial three-dimensional swinging, the air supply area is effectively enlarged, the rotary output of the wind direction is realized, and the output wind sense is softer and more natural. Further, since the swing motion trajectory of the air outlet base 11 is a three-dimensional continuous circumferential closed trajectory, the problem of stopping at the reversing position similar to the linear reciprocating motion of the fan in a single plane does not occur, so that the motion of the product is more reliable.

Preferably, in this embodiment, the fan is a table fan or a floor fan, which of course, in specific applications, the fan provided in this embodiment may also be a floor fan or a wall fan, that is, the fan structure of this embodiment may be applied to a floor fan, a table fan, a floor fan, and a wall fan, and the floor fan, the table fan, the floor fan, and the wall fan adopt the fan structure of this embodiment, which can all achieve the beneficial effects of making the fan structure more compact, making the appearance of the fan more attractive, increasing the product differential selling points, and making the pitching motion of the fan more stable.

Embodiment two:

the main difference between the fan provided in this embodiment and the first embodiment is that the mounting positions of the two first rollers 51 in the same roller set 5 are different, specifically: as shown in fig. 1 to 7, in the first embodiment, two first rollers 51 in the same roller group 5 are rotatably mounted on opposite inner sides of the bracket 3 in the width direction of the bracket 3, respectively; in the present embodiment, as shown in fig. 8-9, two first rollers 51 of the same roller set 5 are rotatably mounted on two opposite outer sides of the bracket 3 along the width direction of the bracket 3. By adopting the mounting mode of the first roller 51 in the embodiment, the bracket 3 can also support the fan head assembly 1 from the left side and the right side, thereby being beneficial to ensuring the stability of the bracket 3 for supporting the fan head assembly 1; just compared with the first embodiment, on the premise that the width of the arc-shaped track 4 is equal, the width of the bracket 3 in the first embodiment is smaller than the width of the bracket 3 in the first embodiment, and the reliability of supporting the fan head assembly 1 by the bracket 3 is slightly poor.

Preferably, two panels 31 are disposed at the end of the bracket 3 facing the fan head assembly 1, the two panels 31 have two opposite inner wall surfaces 311 and two opposite outer wall surfaces 312, the two outer wall surfaces 312 are respectively provided with a plurality of second mounting shafts 33, which are half of the total number of the first rollers 51, in a protruding manner, and the second mounting shafts 33 on the two outer wall surfaces 312 are respectively coaxially disposed in pairs, and the first rollers 51 are respectively rotatably mounted on the second mounting shafts 33. The two first rollers 51 of the same roller group 5 are respectively mounted on two second mounting shafts 33 coaxially arranged on the two outer wall surfaces 312, so that the bracket 3 can support the fan head assembly 1 from the left side and the right side.

Preferably, the arc-shaped track 4 is provided with a first avoiding opening 42 which is opened towards the base assembly 2 and has an opening width larger than the distance between the two outer wall surfaces 312, and a second arc-shaped chute 43 which is communicated with the first avoiding opening 42, wherein the second arc-shaped chute 43 comprises a first middle groove portion 431 which is opposite to the first avoiding opening 42, and two first side groove portions 432 which are respectively positioned at two sides of the first middle groove portion 431 along the width direction of the arc-shaped track 4, and two first rollers 51 of any group of roller groups 5 are respectively accommodated in the two first side groove portions 432. The first avoiding opening 42 is mainly used for preventing interference phenomenon between the arc-shaped track 4 and the two panels 31 in the sliding process. The two first side groove portions 432 are mainly configured to cooperate with the first rollers 51 located on the left and right sides in the width direction of the bracket 3.

In order to facilitate the assembly of the arc-shaped rail 4 and the roller set 5, the arc-shaped rail 4 is preferably divided into left and right parts to be respectively manufactured and then assembled together.

Preferably, an arc-shaped positioning rack 6 is arranged on the wall surface of the arc-shaped track 4, which is axially perpendicular to the roller groups 5, a plurality of positioning grooves which are distributed at intervals are arranged on the arc-shaped positioning rack 6, and an elastic positioning structure 7 which is propped against and positioned by the positioning grooves is also arranged at the axle center position of each roller group 5. An arc-shaped positioning rack 6 is arranged on the wall surface of each first side groove 432 facing the axial end surface of the roller group 5. In a specific application, when the fan head assembly 1 performs arc sliding relative to the first roller 51 under the action of external force, the elastic positioning structure 7 can generate elastic deformation under the action of the external force and retract from the positioning groove, so that the pitching motion of the fan head assembly 1 is not affected by the elastic positioning structure 7; when the fan head assembly 1 is pitching to a required angle, the external force is removed, and the elastic positioning structure 7 stretches out of the jacking positioning groove under the action of the elastic restoring force of the elastic positioning structure, so that the fan head assembly 1 is locked and positioned.

In addition to the above-mentioned differences, the fan according to the present embodiment may be optimally designed according to the first embodiment, and will not be described in detail herein.

Embodiment III:

the main difference between the fan provided in this embodiment and the first and second embodiments is that the roller set 5 has a different structure, specifically: as shown in fig. 1 to 9, in both the first embodiment and the second embodiment, the roller group 5 includes two first rollers 51 respectively mounted on opposite sides of the frame 3 in the width direction of the frame 3; in the present embodiment, as shown in fig. 10-13, the roller set 5 includes a second roller 52 rotatably mounted on the bracket 3, and the axial direction of the second roller 52 is parallel to the width direction of the bracket 3, that is, the fan head assembly 1 in the first embodiment and the second embodiment includes two rollers, and the fan head assembly 1 in the present embodiment includes only one roller. In order to ensure the stability of the support of the fan head assembly 1 by the support 3, the axial length of the second roller 52 in this embodiment needs to be designed to be greater than that of the first roller 51 in the first and second embodiments, so that the cost of the roller in this embodiment is slightly higher than that of the roller in the first and second embodiments.

Preferably, two panels 31 are disposed at opposite intervals at the end of the bracket 3 facing the fan head assembly 1, the two panels 31 have two end faces facing the fan head assembly 1, the two end faces are concavely provided with the same number of clamping grooves 313 as the second rollers 52, the second rollers 52 comprise three rolling parts 521 disposed at intervals for abutting and matching with the arc-shaped track 4, and two clamping parts 522 respectively connected between every two adjacent rolling parts 521 and having an outer diameter smaller than that of the rolling parts 521, and the two clamping parts 522 of each second roller 52 are respectively assembled in the clamping grooves 313 of the two panels 31. The clamping groove 313 and the clamping part 522 are mainly used for realizing the rotation connection between the second roller 52 and the bracket 3; the rolling part 521 is mainly used for realizing the sliding fit between the second roller 52 and the arc-shaped track 4.

Preferably, the catching groove 313 includes a notch 3131 having an opening width smaller than an outer diameter of the catching portion 522 and an arc groove bottom 3132 communicating with the notch 3131 and having an inner diameter greater than or equal to the outer diameter of the catching portion 522, and each of the catching portions 522 is fitted into each of the arc groove bottoms 3132 from each of the notches 3131, respectively. The arc-shaped groove bottom 3132 is mainly used for realizing rotatable assembly of the second roller 52 on the bracket 3; the notch 3131 is mainly used for the clamping portion 522 of the second roller 52 to be assembled at the arc-shaped groove bottom 3132, the opening width of the notch 3131 is designed to be smaller than the outer diameter of the clamping portion 522, and the notch 3131 is mainly used for preventing the clamping portion 522 from easily sliding out of the notch 3131 after being assembled in the arc-shaped groove bottom 3132. In a specific assembly process, the clamping part 522 can pass through the notch 3131 in a mode of elastic expansion deformation of the edge of the notch 3131 under the action of external force and slide into the arc-shaped groove bottom 3132, after the clamping part 522 is completely clamped into the arc-shaped groove bottom 3132, the external force is removed, the edge of the notch 3131 is restored to the original state, and the limiting of the clamping part 522 in the arc-shaped groove bottom 3132 is realized.

Preferably, the arc-shaped track 4 is provided with a second avoiding opening 44 which is opened towards the base assembly 2 and has an opening width larger than the distance between the two panels 31, and a third arc-shaped chute 45 which is communicated with the second avoiding opening 44, the third arc-shaped chute 45 comprises a second middle groove part 451 which is opposite to the second avoiding opening 44, and two second side groove parts 452 which are respectively positioned at two sides of the second middle groove part 451 along the width direction of the arc-shaped track 4, the rolling parts 521 positioned between the two clamping parts 522 are accommodated in the second middle groove part 451, and the three rolling parts 521 of any one second roller 52 are respectively a middle rolling part accommodated in the second middle groove part 451 and two side rolling parts respectively accommodated in the two second side groove parts 452. In this embodiment, the structure of the arc-shaped track 4 can be designed in the same manner as the arc-shaped track 4 in the second embodiment, and will not be described in detail herein.

In addition to the above-mentioned differences, the fan according to the present embodiment may be optimally designed according to the first embodiment, and will not be described in detail herein.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (14)

1. The fan comprises a fan head assembly, a base assembly and a bracket connected between the fan head assembly and the base assembly, and is characterized in that an arc-shaped track is arranged on the back of the fan head assembly, which faces the bracket, and at least two groups of roller groups which are arranged in the arc-shaped track in a sliding manner at intervals are arranged on the end part of the bracket, which faces the fan head assembly;

the arc-shaped track is provided with two first arc-shaped sliding grooves which are respectively positioned at two sides of the arc-shaped track along the width direction of the arc-shaped track, and each first arc-shaped sliding groove is provided with a mounting opening which is laterally opened;

the roller set comprises rollers, the rollers are accommodated in the first arc-shaped sliding grooves, arc-shaped positioning racks are arranged on the wall surface, facing the axial end surface of the rollers, of each arc-shaped sliding groove, a plurality of positioning grooves which are distributed at intervals are arranged on each arc-shaped positioning rack, and an elastic positioning structure which is propped against and positioned with the positioning grooves is further arranged at the axle center position of each roller set;

the elastic positioning structure comprises a spring embedded in the axle center position of the roller group and a positioning rod, one end of the positioning rod is connected with the spring, and the other end of the positioning rod is abutted against the arc-shaped positioning rack; or the elastic positioning structure comprises a spring plate which extends from the axle center position of the roller group and is abutted against the arc-shaped positioning rack;

the inner wall of the positioning groove is a spherical surface, and the outer surface of the end part of the positioning rod or the elastic sheet, which is close to the arc-shaped positioning rack, is a spherical surface matched with the inner wall of the positioning groove.

2. The fan of claim 1, wherein the bracket has a height direction extending from the base assembly toward the fan head assembly, a length direction extending in an arc length direction of the arc-shaped rail, and a width direction extending in a width direction of the arc-shaped rail, and the rollers include two first rollers rotatably mounted to opposite sides of the bracket in the width direction of the bracket, respectively.

3. The fan as claimed in claim 2, wherein two of said first rollers of the same roller group are respectively installed at opposite inner sides of said bracket in a width direction of said bracket.

4. The fan as claimed in claim 3, wherein the end of the bracket facing the fan head assembly is provided with two panels opposite to each other at intervals, each of the two panels has two inner wall surfaces opposite to each other at intervals, first mounting shafts of which the number is half of the total number of the first rollers are respectively protruded on the two inner wall surfaces, each of the first mounting shafts on the two inner wall surfaces is respectively coaxially arranged in pairs, and each of the first rollers is respectively rotatably mounted on each of the first mounting shafts;

wherein, each elastic positioning structure is respectively installed on each first installation shaft.

5. The fan as claimed in claim 2, wherein the two first rollers of the same roller group are respectively installed at opposite outer sides of the bracket in a width direction of the bracket.

6. The fan of claim 5, wherein two panels facing the fan head assembly are arranged at two opposite intervals on the end of the bracket, the two panels are provided with two outer wall surfaces opposite to each other, the two outer wall surfaces are respectively provided with second installation shafts with the number being half of the total number of the first rollers in a protruding mode, the second installation shafts on the two outer wall surfaces are respectively arranged coaxially in pairs, and the first rollers are respectively rotatably installed on the second installation shafts;

wherein, each elastic positioning structure is respectively installed on each second installation shaft.

7. The fan as claimed in claim 6, wherein the arc-shaped rail is provided with a first escape opening which is opened toward the base assembly and has an opening width larger than a distance between the two outer wall surfaces, and a second arc-shaped chute which communicates with the first escape opening, the second arc-shaped chute including a first middle groove portion which is diametrically opposite to the first escape opening, and two first side groove portions which are respectively located at both sides of the first middle groove portion in a width direction of the arc-shaped rail;

the first side groove part is used as the first arc-shaped chute, and two first rollers of any group of roller groups are respectively accommodated in the two first side groove parts.

8. The fan of claim 1, wherein the bracket has a height direction extending from the base assembly toward the fan head assembly, a length direction extending in an arc length direction of the arc-shaped rail, and a width direction extending in a width direction of the arc-shaped rail, and the roller includes a second roller rotatably mounted to the bracket, and an axial direction of the second roller is parallel to the width direction of the bracket.

9. The fan of claim 8, wherein two panels facing the fan head assembly are disposed at the end of the bracket facing the fan head assembly and are opposite to each other at intervals, two end faces facing the fan head assembly are provided with grooves, the number of the grooves is equal to that of the second rollers, the second rollers comprise three rolling parts disposed at intervals and used for being in abutting fit with the arc-shaped rails, and two clamping parts respectively connected between every two adjacent rolling parts and having an outer diameter smaller than that of the rolling parts, and the two clamping parts of each second roller are respectively assembled in the grooves of the two panels.

10. The fan as claimed in claim 9, wherein the catching groove includes a notch having an opening width smaller than an outer diameter of the catching portion and an arc groove bottom communicating with the notch and having an inner diameter greater than or equal to the outer diameter of the catching portion, each of the catching portions being fitted into each of the arc groove bottoms from each of the notches, respectively.

11. The fan as claimed in claim 9 or 10, wherein the arc-shaped rail is provided with a second escape opening which is opened toward the base assembly and has an opening width larger than a distance between the two panels, and a third arc-shaped chute which is communicated with the second escape opening, the third arc-shaped chute comprises a second middle groove part which is opposite to the second escape opening, and two second side groove parts which are respectively positioned at two sides of the second middle groove part along the width direction of the arc-shaped rail, and the rolling parts positioned between the two clamping parts are accommodated in the second middle groove parts;

the second side groove part is used as the first arc-shaped chute, and the three rolling parts of any one second roller are respectively a middle rolling part which is accommodated in the second middle groove part and two side rolling parts which are accommodated in the two second side groove parts.

12. The fan as claimed in any one of claims 1 to 6 or 8 to 10, wherein the axes of the roller groups are parallel to each other and located in the same curved surface, and the central axis of the curved surface coincides with the central axis of the curved track.

13. The fan of any of claims 1 to 6 or 8 to 10, wherein the fan head assembly comprises an air outlet base, an air inlet base arranged on one side of the air outlet base, and a swing mechanism for driving the air outlet base to perform swing motion relative to the air inlet base, the swing mechanism comprises a swing driving motor assembled on the air inlet base and a swing transmission pair in transmission connection with the swing driving motor and the air outlet base, and the arc-shaped track is arranged on the back of the air inlet base opposite to the air outlet base.

14. A fan as claimed in any one of claims 1 to 6 or 8 to 10, wherein the fan is a table or desk or floor or wall fan.