CN216131116U

CN216131116U - Electric fan

Info

Publication number: CN216131116U
Application number: CN202120535482.6U
Authority: CN
Inventors: 刘伟军
Original assignee: Beijing Xiaomi Mobile Software Co Ltd; Dreame Technology Shanghai Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd; Dreame Technology Shanghai Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-03-25
Anticipated expiration: 2031-03-15

Abstract

The present invention provides an electric fan, comprising: a grating, and a support bar for supporting the grating; the support rod comprises a first connecting piece and a second connecting piece which is in pivot connection with the first connecting piece, and the first connecting piece is connected with the grating. The electric fan disclosed by the utility model can be used for pitching adjustment, is simple to assemble, and improves the production efficiency of the electric fan.

Description

Electric fan

[ technical field ] A method for producing a semiconductor device

The utility model relates to a household appliance, in particular to an electric fan.

[ background of the utility model ]

The electric fan is generally provided with a pitching structure, and the pitching angle of a fan head is adjusted through the pitching structure, so that air can be blown towards different directions.

In the existing electric fan structure, the number of assembling parts for adjusting the pitching angle of the electric fan is large, the assembling reject ratio is high, and the production efficiency is low.

Therefore, there is a need for an improved pitch structure of a prior art electric fan to overcome the above-mentioned drawbacks of the prior art.

[ Utility model ] content

The utility model aims to provide an electric fan with a novel structure.

The purpose of the utility model is realized by the following technical scheme:

an electric fan, comprising:

a grating, and a support bar for supporting the grating;

the support rod comprises a first connecting piece and a second connecting piece which is in pivot connection with the first connecting piece, and the first connecting piece is connected with the grating.

In one embodiment, the pivot axes of the first and second connectors intersect the extension axis of the support rod.

In an embodiment, the second connector is provided with a receiving portion, and the first connector is at least partially and pivotably received in the receiving portion.

In one embodiment, the second connecting member has two connecting arms, and the two connecting arms are used for connecting with the first connecting member.

In an embodiment, the first connecting member has a first hinge hole, at least one of the two connecting arms of the second connecting member is provided with a second hinge hole, and the first connecting member and the second connecting member are pivotally connected by a pivot shaft inserted in the first hinge hole and the second hinge hole.

In an embodiment, the first connecting element comprises a first limiting structure, the second connecting element comprises a second limiting structure, the first limiting structure and the second limiting structure are matched, and the first limiting structure and the second limiting structure are used for limiting the maximum pivoting angle between the first connecting element and the second connecting element.

In an embodiment, two sides of the first connecting member perpendicular to the pivot axis are respectively formed with a recessed portion, the two connecting arms of the second connecting member are respectively located in the recessed portions, and the first limiting structure is disposed in the recessed portions.

In an embodiment, the second limiting structure is disposed in the connecting arm.

In an embodiment, the second limiting structure is a limiting piece, the second hinge hole is disposed in the limiting piece, and the limiting piece protrudes inwards from the connecting arm.

In one embodiment, the recessed portion is provided with stop protrusions which are located on two sides of the limiting piece and spaced apart from the limiting piece, the pivot shaft is a damping hinge, the damping hinge comprises a first part and a second part which are mutually damped to rotate, the first part is fixed in one of the first hinge hole and the second hinge hole, and the second part is fixed in the other hinge hole.

Compared with the prior art, the utility model has the following beneficial effects:

the electric fan can be conveniently adjusted in pitch, is simple to assemble, and improves the production efficiency of the electric fan.

[ description of the drawings ]

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded perspective view of a portion of the present invention.

Fig. 3 is a perspective view of the first connecting member.

Fig. 4 is a perspective view of the second connector.

Fig. 5 is a perspective view of the pivot shaft.

Fig. 6 is a perspective view of the outer sleeve.

[ List of reference numerals ]

1. An electric fan; 2. a fan head; 21. a grid; 3. a support bar; 4. a base; 31. a swing structure; 32. a first connecting member; 33. a second connecting member; 331. a connecting arm; 332. a body of a second connector; 321. a first hinge hole; 333. a second hinge hole; 5. a pivotal shaft; 51. a first portion of a damped hinge; 52. a second portion of the damped hinge; 322. a recessed portion; 3311. a convex arc surface; 3221. a concave arc surface; 3312. a limiting sheet; 3222. a stopper projection; 34. an inner tube; 35. an outer sleeve; 351. a connecting arm covering portion; 324. and (6) an outer pipe is arranged.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

Referring to fig. 1, an electric fan 1 of the present invention includes a fan head 2, a support bar 3, and a base 4. The fan head 2 comprises a grid 21, a motor and fan blades are arranged in the grid 21, and the motor can drive the fan blades to rotate so as to generate air flow. The support bar 3 is located below the fan head 2 to support the fan head 2, and specifically, the support bar 3 supports the fan head 2 by being connected to the lower end of the grill 21, and the lower end of the support bar 3 is connected to the base 4.

Referring to fig. 1, in an alternative embodiment, the base 4 of the electric fan 1 has a rotary swing structure, and the rotary swing structure in the base 4 rotates along with the fan head 2 through the connection between the base 4 and the support bar 3 and the connection between the support bar 3 and the fan head 2.

In the embodiment of the present application, the angle of the rotational swing is not limited, and the direction of the rotational swing is not limited. The swing structure 31 is arranged in the support rod 3, and the swing structure 31 can enable the part of the support rod 3 above the swing structure 31 to rotate around a substantially vertical axis relative to the part below the swing structure 31, so that the fan head 2 can swing around the substantially vertical axis.

In order to enable adjustment of the pitch angle of the fan head 2, a pitch structure is provided in the struts 3, the pitch structure being located near the upper ends of the struts 3 such that the fan head 2 can pivot about a generally horizontal axis up or down to blow in different directions.

Of course, the above description is only a few alternative embodiments, and other embodiments that can be implemented based on fig. 1 are also within the scope of the present application.

It should be understood that although the present invention is described based on the illustrated embodiment of the floor fan, the electric fan 1 of the present invention may also be a desk fan.

As shown in fig. 2, there is shown an exploded perspective view of a pitch structure portion of a support rod 3 of an electric fan 1 of the present invention. The support bar 3 includes a first connector 32 and a second connector 33. The first link 32 is used for fixed connection with the grille 21, and the first link 32 is pivotally connected with the second link 33.

Specifically, the upper end of the first link 32 is adapted to be fixedly connected to the lower end of the grill 21, and the lower portion of the first link 32 is pivotally connected to the upper portion of the second link 33. The first link 32 and the grating 21 to which it is connected can thus pivot relative to the second link 33 of the support bar 3. In the illustrated embodiment, the pivot axes of the first link 32 and the second link 33 are perpendicular to the extension axis of the support bar 3, i.e., the extension axis of the second link 33. In case the support bar 3 extends vertically, the pivot axis extends horizontally. It should be understood that the pivot axis may not be perpendicular to the extension axis of the support bar 3, as long as it is at an angle with respect to the extension axis of the support bar 3. In an alternative embodiment, the second link 33 is provided with a receptacle in which the first link 32 is at least partially and pivotably received.

In another alternative embodiment, the first link 32 is provided with a housing in which the second link 33 is at least partially and pivotably received.

In the embodiment of the present application, a receiving structure is illustrated, and specifically, referring to fig. 4, the second link 33 has two connecting arms 331, the two connecting arms 331 extend upward from a main body 332 of the second link, and the two connecting arms 331 form a receiving portion.

In particular, in the embodiment shown in fig. 3 and 4, the two connecting arms 331 are spaced apart from each other and radially opposite each other. The two link arms 331 are for pivotal connection with the first link 32. Specifically, as shown in fig. 3 and 4, the first link 32 has a first hinge hole 321, and the two link arms 331 of the second link 33 are each provided with a second hinge hole 333, and the pivot shaft 5 is inserted into the first hinge hole 321 and the second hinge hole 333, thereby achieving the pivotal connection between the first link 32 and the second link 33. It should be understood that the pivot shaft 5 may be inserted into the second hinge hole 333 and the first hinge hole 321 of the two link arms 331 at the same time, or may be inserted into the second hinge hole 333 and the first hinge hole 321 of only one of the link arms 331 to implement the pivotal connection between the first link 32 and the second link 33. In the illustrated embodiment, two connecting arms 331 are each provided with one second hinge hole 333, but it should be understood that only one connecting arm 331 may be provided with a second hinge hole 333.

In the illustrated embodiment, when the first link 32 and the second link 33 are connected to each other by the pivot shaft 5, the portion of the first link 32 provided with the first hinge hole 321 is located between the two link arms 331 of the second link 33, but it is understood that the portion of the first link 32 provided with the first hinge hole 321 may be pivotally connected to the two link arms 331 in other manners without departing from the scope of the present invention.

In the present embodiment, the type of the pivot shaft is not limited, and in the preferred embodiment shown in fig. 5, the pivot shaft 5 is a damping hinge, and the damping hinge includes a first part 51 and a second part 52 which are mutually rotationally damped, wherein the first part 51 is fixed in the first hinge hole 321, and the second part 52 is fixed in the second hinge hole 333, so that the damping pivot can be realized between the first connecting member 32 and the second connecting member 33, and the grille 21 of the fan head 2 can be pivoted in a damping manner relative to the second connecting member 33 of the support rod 3, so as to stop the fan head 2 at a desired pitch position relative to the second connecting member 33 of the support rod 3. It should be understood that it is also possible to arrange for the first part 51 of the damping hinge to be fixed in the second hinge hole 333 and the second part 52 to be fixed in the first hinge hole 321.

In the preferred embodiment shown in fig. 1, the first connector 32 further includes an upper outer tube 324, and the upper outer tube 324 covers the outer surface of the first connector 32 except for the first hinge hole 321, so that foreign substances such as dust can be prevented from entering the inside of the first connector 32. It should be understood, however, that first connector 32 may not include upper outer tube 324.

In the preferred embodiment shown in fig. 3, the first connecting member 32 has two recessed portions 322 on two sides perpendicular to the pivot axis, specifically, the upper outer tube 324 has two recessed portions 322 on two sides, and the two connecting arms 331 of the second connecting member 33 are located in the recessed portions 322 respectively. In the shown embodiment the end surfaces of the two connecting arms 331 are convex arcs 3311 with the pivot axis as axis, while the top ends of the recesses 322 are provided with corresponding concave arcs 3221 facing the convex arcs 3311 and engaging the convex arcs 3311, the convex arcs 3311 cooperating with the concave arcs 3221 for guiding the rotation of the first and

second links

32, 33 relative to each other.

In addition, in the preferred embodiment shown in fig. 3 and 4, a first limit structure and a second limit structure which limit the maximum angle of pivoting of the first connecting piece 32 and the second connecting piece 33 relative to each other and are matched with each other are respectively arranged on the concave part 322 of the first connecting piece 32 and the connecting arm 331 of the second connecting piece 33. It should be understood that the first and second limiting structures can be disposed at other positions of the first and second connecting

members

32 and 33, respectively, such as on the bottom surface of the first connecting member 32 and the top surface of the opposite second connecting member 33 between the two connecting arms 331.

In the embodiment shown in fig. 3 and 4, a stopper plate 3312 is provided on an inner surface of the connecting arm 331 of the second connecting member 33, and the stopper plate 3312 protrudes inward from the inner surface of the connecting arm 331. In the illustrated embodiment, the second hinge hole 333 is provided on the stopper plate 3312, but it should be understood that the second hinge hole 333 may be provided at other positions of the connecting arm 331. Two stopping protrusions 3222 are provided on the side surfaces of the recess 322 at both sides of the stopping piece 3312 and spaced apart from the stopping piece 3312 such that the stopping piece 3312 moves between the two stopping protrusions 3222 when the first and

second links

32 and 33 are pivoted with respect to each other, the two stopping protrusions 3222 respectively defining maximum angles of rotation of the first and

second links

32 and 33 with respect to each other in both directions. It should be understood that it is also possible to provide that the stopping piece 3312 is located on the side surface of the recess 322, and the stopping protrusion 3222 is provided on the inner side surface of the connecting arm 331. It should also be understood that although in the illustrated embodiment both of the recesses 322 of the first connecting member 32 are provided with the position restricting protrusions and both of the inner surfaces of the two connecting arms 331 are provided with the protruding position restricting pieces 3312, it may be provided that only one of the recesses 322 is provided with the position restricting protrusion and only the inner surface of the corresponding one of the connecting arms 331 is provided with the protruding position restricting pieces 3312.

In the embodiment shown in fig. 4, the spacing piece 3312 is formed separately from the connecting arm 331 and is fixedly connected to each other by means of a catch and a projection provided on the spacing piece 3312 and the connecting arm 331, respectively, but it should be understood that the spacing piece 3312 may be formed integrally with the connecting arm 331.

In the embodiment shown in fig. 4, the boundary of the position-limiting piece 3312 includes a convex arc surface centered on the pivot axis and two side boundaries connected to both ends of the convex arc surface and tangent to the convex arc surface, and the stopping protrusions 3222 are formed by two side boundaries of a concave cavity on the side surface of the concave portion 322, the boundary of the concave cavity including a concave arc surface centered on the pivot axis and two side boundaries connected to both ends of the concave arc surface and tangent to the concave arc surface, wherein the radius of the convex arc surface is the same as the radius of the concave arc surface, and the circumferential angle of the concave arc surface is smaller than the circumferential angle of the convex arc surface.

In this embodiment, the angular difference between the circumferential angle of the concave arc surface and the circumferential angle of the convex arc surface is the maximum angular range over which the first link 32 and the second link 33 pivot relative to each other. It should be understood that the spacing piece 3312 may be provided in any shape as long as it can protrude from one of the side surface of the recess 322 and the inner surface of the connecting arm 331, and the stopping protrusion 3222 is not limited to the above-mentioned shape as long as the stopping protrusion 3222 can limit the moving range of the spacing piece 3312 therebetween when the first and

second links

32 and 33 are pivoted relative to each other. Furthermore, as mentioned above, the position limiting structure may also be provided on, for example, the bottom surface of the portion of the first connecting member 32 between the two connecting arms 331 and the top surface of the opposing second connecting member 33 between the two connecting arms 331, and one of the bottom surface and the opposing bottom surface may be provided with a protruding position limiting portion and the other may be provided with a protruding stopping portion, which may be formed, for example, by two ends of a groove extending in the direction of relative movement of the two.

In the preferred embodiment shown, the support rod 3 comprises an inner tube 34 and an outer sleeve 35 fixedly connected to the second connector 33. The lower end of the second connector 33 is fixedly connected with the inner tube 34, and the outer sleeve 35 is sleeved outside the inner tube 34 and the second connector 33, so that impurities such as dust can be prevented from entering the second connector 33. Wherein the upper end of the outer sleeve 35 is provided with cover portions of the connecting arms 331 extending upward from the upper end edge and diametrically opposed to each other so as to cover the outer surfaces of the two connecting arms 331. It is preferable that the cross-section of the inner tube 34 and the cross-section of the lower end of the second connecting member 33 are complementary and non-circularly symmetrical, so that the lower end of the second connecting member 33 can be fixedly connected with the inner tube 34 by inserting the lower end of the second connecting member 33 into the inner tube 34 without rotating the two relative to each other.

It should be noted that in the preferred embodiment, the outer diameter of upper outer tube 324 is the same as the outer diameter of outer sleeve 35, such that when first connector 32 and second connector 33 are axially aligned, the outer peripheral surfaces of upper outer tube 324 and outer sleeve 35 are flush with one another. As also shown in fig. 2, the shape of the portion of the first link 32 located between the two link arms 331 is substantially complementary to the shape of the receptacle formed between the two link arms 331. In the preferred embodiment shown in fig. 2-4, the two connecting arms 331 are also substantially complementary in shape to the recesses 322 on the first connector 32. Due to the above structural arrangement, the first connector 32 and the second connector 33 are close to the integral cylindrical structure in appearance when axially aligned with each other.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

Claims

1. An electric fan, comprising:

a grating, and a support bar for supporting the grating;

2. The electric fan as claimed in claim 1, wherein the pivot axes of the first and second links intersect the extension axis of the support rod.

3. The electric fan as claimed in claim 1, wherein the second link is provided with a receptacle, the first link being at least partially and pivotably received within the receptacle.

4. The electric fan as claimed in claim 3, wherein the second link has two connecting arms for connecting with the first link.

5. The electric fan as claimed in claim 4, wherein the first link member has a first hinge hole, at least one of the two link arms of the second link member is provided with a second hinge hole, and the first link member and the second link member are pivotally connected by a pivot shaft inserted in the first hinge hole and the second hinge hole.

6. The electric fan as claimed in claim 5, wherein the first connector comprises a first stop structure and the second connector comprises a second stop structure, the first and second stop structures mating, the first and second stop structures defining a maximum pivot angle between the first and second connectors.

7. The electric fan as claimed in claim 6, wherein two sides of the first connecting member perpendicular to the pivot axis are respectively formed with a recess, the two connecting arms of the second connecting member are respectively located in the recesses, and the first limiting structure is disposed in the recesses.

8. The electric fan as claimed in claim 7, wherein the second limiting structure is disposed within the connecting arm.

9. The electric fan as claimed in claim 8, wherein the second position-limiting structure is a position-limiting piece, the second hinge hole is provided in the position-limiting piece, and the position-limiting piece protrudes inward from the connecting arm.

10. The electric fan as claimed in claim 9, wherein the recess is provided with stopping protrusions spaced apart from the stopper piece on both sides of the stopper piece, the pivot shaft is a damping hinge including a first portion and a second portion that are mutually rotationally damped, the first portion being fixed in one of the first hinge hole and the second hinge hole, and the second portion being fixed in the other of the first hinge hole and the second hinge hole.