CN219299631U

CN219299631U - Fan blade structure and fan

Info

Publication number: CN219299631U
Application number: CN202223497693.9U
Authority: CN
Inventors: 陈政; 赖孝成; 李慧中; 谭智玲; 黄伟青
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-07-04
Anticipated expiration: 2032-12-23

Abstract

The utility model provides a fan blade structure and a fan, wherein the fan blade structure comprises a driving motor, and a fixing part is arranged on an output shaft of the driving motor; a connecting member having a first connecting member and a second connecting member; the first connecting part is connected with the fixed part, and the second connecting part is connected with the first connecting part in a relatively movable way; the fan blade part is provided with a connecting channel for accommodating the output shaft, and a limiting hole is formed in the side wall of the connecting channel; when the output shaft is inserted in the connecting channel, the second connecting part is inserted in the limiting hole to fix the relative position of the fan blade part and the output shaft.

Description

Fan blade structure and fan

Technical Field

The utility model relates to the field of fans, in particular to a fan blade structure and a fan.

Background

The air conditioner fan system commonly uses cross-flow fan blades, centrifugal fan blades and axial flow fan blades, and the connection mode of the fan blades and a motor is generally as follows:

after the insertion depth and the flat position of the motor are determined manually, the motor is inserted into the central hole of the through-flow fan blade, and then the locking screw of the through-flow fan blade is driven into the flat plane of the motor shaft, and the fan blade is fastened by virtue of the friction force between the screw and the motor shaft.

The motor is inserted into the central hole of the centrifugal fan blade, the fan blade determines the insertion depth through a baffle plate on the motor, and the locking nut is screwed into the compressing fan blade from the shaft end of the motor.

The motor is inserted into the center hole of the axial flow fan blade, the fan blade determines the insertion depth through a baffle plate on the motor, and the locking nut is screwed into the compressing fan blade from the shaft end of the motor.

These fixing means are very mature applications and have also proven to be very reliable in practice. However, the above-mentioned fixing method requires a large external force to operate, and the fan blade or the structure of the fan is easily damaged during operation.

Disclosure of Invention

The utility model mainly aims to provide a fan blade structure and a fan, so as to solve the problem that the fan blade of the fan in the prior art is easy to damage during assembly.

In order to achieve the above object, according to an aspect of the present utility model, there is provided a fan blade structure, including: the output shaft of the driving motor is provided with a fixing part; a connecting member having a first connecting member and a second connecting member; the first connecting part is connected with the fixed part, and the second connecting part is connected with the first connecting part in a relatively movable way; the fan blade part is provided with a connecting channel for accommodating the output shaft, and a limiting hole is formed in the side wall of the connecting channel; when the output shaft is inserted in the connecting channel, the second connecting part is inserted in the limiting hole so as to fix the relative positions of the fan blade part and the output shaft.

Further, the first connecting part is provided with a containing cavity for containing the second connecting part, an elastic piece is arranged in the containing cavity, one end of the elastic piece is connected with the first connecting part, and the other end of the elastic piece is connected with the second connecting part.

Further, the second connecting part is in a connecting state and an avoiding state, and when the second connecting part is in the connecting state, the elastic part pushes the second connecting part to move to the outer side of the accommodating cavity so as to enable the second connecting part to be inserted into the limiting hole; when the second connecting part is in the avoidance state, at least part of the second connecting part is positioned in the accommodating cavity, so that the output shaft is movably arranged in the connecting channel.

Further, the second connection member includes: the movable body is positioned in the accommodating cavity, and the elastic piece is connected with the movable body; the connecting body is connected with the movable body, one end of the connecting body, which is far away from the connecting body, is provided with a connector, and at least part of the connector is arc-shaped.

Further, the connecting body and the moving body are both cylindrical structures, the diameter of the connecting body is smaller than that of the moving body, the first connecting component comprises a containing body and a limiting body connected with the containing body, the elastic piece is arranged in the containing body, and the limiting body is used for being abutted with the moving body so as to limit the position of the moving body.

Further, the fixed part is provided with a communication groove, the outer surface of the output shaft is provided with an installation plane, and the extending direction of the installation plane and the extending direction of the communication groove are mutually parallel.

Further, along the moving direction of the second connecting part, the length of the second connecting part is L, and the diameter of the output shaft is D; wherein L is less than D.

Further, the fan blade member includes: the fan blade body is provided with a plurality of blades; and the shaft sleeve component is connected with the fan blade body, and the connecting channel is arranged on the shaft sleeve component.

Further, the shaft sleeve part comprises a connecting port communicated with the connecting channel, a guide surface is arranged at the connecting port, and a preset included angle exists between the extending direction of the guide surface and the extending direction of the connecting channel.

According to another aspect of the utility model, a fan is provided, which comprises a fan blade structure, wherein the fan blade structure is the fan blade structure.

By applying the technical scheme of the utility model, the fan blade structure comprises a driving motor, and a fixing part is arranged on an output shaft of the driving motor; a connecting member having a first connecting member and a second connecting member; the first connecting part is connected with the fixed part, and the second connecting part is connected with the first connecting part in a relatively movable way; the fan blade part is provided with a connecting channel for accommodating the output shaft, and a limiting hole is formed in the side wall of the connecting channel; when the output shaft is inserted in the connecting channel, the second connecting part is inserted in the limiting hole so as to fix the relative positions of the fan blade part and the output shaft. By adopting the arrangement, the second connecting part is movably arranged, and when the output shaft is inserted into the connecting channel, the second connecting part moves relative to the first connecting part, so that the connecting part prevents the output shaft from falling out of the connecting channel, the effect of fixing the driving motor and the fan blade part is achieved, and the problem that the fan blade of the fan in the prior art is easily damaged during assembly is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a front view of a driving motor of a fan blade structure according to an embodiment of the present utility model;

fig. 2 shows a schematic structural diagram of a driving motor of a fan blade structure according to an embodiment of the present utility model;

FIG. 3 shows a schematic view of a fan blade component of the fan blade structure of the present utility model;

FIG. 4 shows a schematic view of the structure of the fan blade structure of the present utility model before the fan blade member is connected to the drive motor;

FIG. 5 shows a schematic view of the fan blade structure of the present utility model when the second connection member is in the avoidance state;

FIG. 6 is a schematic view showing the structure of the fan blade structure of the present utility model when the second connecting member is in a connected state;

FIG. 7 is a schematic view showing the external structure of an embodiment of a second connection member of the fan blade structure of the present utility model;

FIG. 8 is a schematic view showing the internal structure of an embodiment of a second connection member of the fan blade structure of the present utility model;

FIG. 9 is a schematic view showing the external structure of another embodiment of the second connection member of the fan blade structure of the present utility model;

fig. 10 shows a schematic internal structure of another embodiment of the second connection member of the fan blade structure of the present utility model.

Wherein the above figures include the following reference numerals:

1. a driving motor; 2. an output shaft; 21. a fixing part; 22. a mounting plane; 10. a connecting member; 3. a first connecting member; 31. a housing cavity; 32. a housing body; 33. a limit body; 4. a second connecting member; 41. moving the body; 42. a connection body; 421. a connector; 5. an elastic member; 6. a fan blade member; 61. a fan blade body; 611. a blade; 62. a sleeve member; 63. a connection channel; 634. a guide surface; 64. and a limiting hole.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 10, the fan blade structure of the present embodiment includes: a driving motor 1, wherein a fixing part 21 is arranged on an output shaft 2 of the driving motor 1; a connection member 10, the connection member 10 having a first connection member 3 and a second connection member 4; the first connecting member 3 is connected to the fixing portion 21, and the second connecting member 4 is connected to the first connecting member 3 so as to be relatively movable; the fan blade part 6, the fan blade part 6 is provided with a connecting channel 63 for accommodating the output shaft 2, and the side wall of the connecting channel 63 is provided with a limit hole 64; when the output shaft 2 is inserted into the connection channel 63, the second connection member 4 is inserted into the limiting hole 64 to fix the relative positions of the fan blade member 6 and the output shaft 2. With the above arrangement, by using the movably arranged second connecting member 4, when the output shaft 2 is inserted into the connecting channel 63, the second connecting member 4 moves relative to the first connecting member 3, so that the connecting member 10 prevents the output shaft 2 from falling out of the connecting channel 63, thereby achieving the effect of fixing the driving motor 1 and the fan blade member 6, and solving the problem that the fan blade of the fan in the prior art is easily damaged during assembly.

In the fan blade structure of the present embodiment, referring to fig. 1 to 10, the first connecting member 3 has a housing cavity 31 for housing the second connecting member 4, an elastic member 5 is provided in the housing cavity 31, one end of the elastic member 5 is connected to the first connecting member 3, and the other end of the elastic member 5 is connected to the second connecting member 4.

Referring to fig. 1 to 10, in the fan blade structure of the present embodiment, the second connecting member 4 has a connection state and an avoidance state, and when the second connecting member 4 is in the connection state, the elastic member 5 pushes the second connecting member 4 to move to the outside of the accommodating cavity 31, so that the second connecting member 4 is inserted into the limiting hole 64; when the second connecting member 4 is in the retracted state, at least part of the second connecting member 4 is positioned within the receiving cavity 31 such that the output shaft 2 is movably disposed within the connecting channel 63.

In the fan blade structure of the present embodiment, the second connection member 4 includes: the movable body 41, the movable body 41 is positioned in the accommodating cavity 31, and the elastic piece 5 is connected with the movable body 41; the connecting body 42, the connecting body 42 is connected with the movable body 41, one end of the connecting body 42 far away from the connecting body 42 is provided with a connecting head 421, and at least part of the connecting head 421 is arc-shaped.

Specifically, a connecting member 10 is fixed to the output shaft 2 at a certain position, and at least one end of the connecting member 10 protrudes from the output shaft 2 in a natural state. When pressed by an external force, the connecting member 10 is in an avoidance state and can freely extend and retract until the connecting member completely falls into the output shaft 2. Correspondingly, a limiting hole 64 is drilled at a certain position in the connecting channel 63, and the inner diameter of the limiting hole 64 is slightly larger than the outer diameter of the second connecting part 4. The output shaft 2 is inserted until the axis of the connecting part 10 coincides with the axis of the limiting hole 64, at this time, the pressing force is eliminated, the connecting part 10 is ejected back to the natural state and stretches into the limiting hole 64, because the connecting part 10 and the limiting hole 64 form interlocking limiting, and the driving motor 1 and the fan blade part 6 can not move axially any more. Therefore, the whole fan system can be assembled manually and easily without tools and fastening parts, and a good foundation is laid for full-automatic production.

In the fan blade structure of this embodiment, referring to fig. 7 to 10, the connection body 42 and the moving body 41 are both cylindrical structures, the diameter of the connection body 42 is smaller than that of the moving body 41, the first connection part 3 includes a housing body 32 and a limiting body 33 connected with the housing body 32, the elastic member 5 is disposed in the housing body 32, and the limiting body 33 is used for abutting against the moving body 41 to limit the position of the moving body 41.

In the fan blade structure of the present embodiment, the fixing portion 21 is provided with a communication groove, the outer surface of the output shaft 2 is provided with the mounting plane 22, and the extending direction of the mounting plane 22 and the extending direction of the communication groove are disposed parallel to each other.

In the fan blade structure of the present embodiment, along the moving direction of the second connecting member 4, the length of the second connecting member 4 is L, and the diameter of the output shaft 2 is D; wherein L is less than D.

In the fan blade structure of the present embodiment, the fan blade member 6 includes: the fan blade body 61, a plurality of blades 611 are arranged on the fan blade body 61; the shaft sleeve member 62, the shaft sleeve member 62 is connected to the fan blade body 61, and the connection passage 63 is provided in the shaft sleeve member 62.

In the fan blade structure of this embodiment, the shaft sleeve part 62 includes a connection port that is communicated with the connection channel 63, a guiding surface 634 is disposed at the connection port, and a preset included angle exists between the extending direction of the guiding surface 634 and the extending direction of the connection channel 63.

Specifically, during the insertion of the output shaft 2 into the connection passage 63, the connection member 10 is pressed by the guide slope of the sleeve end face to sink into the output shaft 2.

The fan of this embodiment includes the fan blade structure, and the fan blade structure is foretell fan blade structure.

The utility model is suitable for the situation that when the fan system runs, the fan blade and the motor have no larger stress and larger displacement in at least one direction on the rotating axis.

An embodiment of the present utility model is described below:

the connecting part 10 of the bullet-shaped connecting part 10 of the embodiment is formed by a second connecting part 4, a first connecting part 3 and an elastic part 5. The second connecting part 4 is a metal cylindrical part, the end face of the connecting head 421 is an arc surface, and a small section of base with the outer diameter slightly larger than the outer diameter of the main body of the second connecting part 4 is arranged at the bottom of the cylindrical column. The first connecting part 3 is a metal cylindrical thin shell part, the opening part of the thin shell part is provided with a small section of shrinkage, and the diameter after shrinkage is slightly smaller than the diameter of the accommodating body. After the elastic member 5 and the second connecting member 4 are respectively placed in the first connecting member 3, the first connecting member 3 is contracted to restrict the second connecting member 4 from coming out of the mouth. As shown in the figure, in a natural state, the second connecting part 4 can extend out from the opening of the first connecting part 3 under the action of spring force and is clamped at the necking position of the first connecting part 3; when the arc surface at the top of the second connecting part 4 is pressed by external force, the force is transmitted to the elastic part 5, and the elastic part 5 is compressed and retracted to the inside of the first connecting part 3 together with the second connecting part 4.

As shown in fig. 1 and 2, a mounting plane 22 is provided on the output shaft 2 of the drive motor 1, the mounting plane 22 being parallel to the axis of the output shaft 2. A through hole is drilled at a position which vertically passes through the axis of the output shaft 2 and is used as a fixing hole, the connecting part 10 is pressed into the output shaft 2 from one side of the fixing hole, the pressing depth is accurately controlled and positioned through a pressing tool, and the first connecting part 3 of the connecting part 10 is just completely hidden in the output shaft 2 (the length L of the first connecting part 3 of the connecting part 10 is designed to be slightly smaller than the diameter D of the output shaft 2). The inner diameter of the fixing hole is slightly smaller than the maximum outer diameter of the first connecting part 3, and the connecting part 10 is fixed in the output shaft 2 after being pressed into interference tight fit, so that a motor with the connecting part 10 is formed.

As shown in fig. 3, in the fan blade member 6 of this embodiment, a metal shaft sleeve member 62 is designed on one side of the fan blade member 6, and the shape of the connection channel 63 is an oblate through hole matched with the output shaft 2. The guide surface 634 is designed on one side of the connecting channel 63 near the insertion end of the motor, so that the driving motor 1 can be inserted more smoothly. In addition, a through hole communicating with the shaft hole is bored in the cylindrical outer wall of the boss member 62 as a stopper hole 64, and the diameter of the stopper hole 64 is slightly larger than the outer diameter of the main body of the second coupling member 4.

As shown in fig. 4 to 6, when the connection member 10 of the driving motor 1 contacts the guide surface 634 during the assembly of the driving motor 1 into the blade member 6, a component force in a telescopic direction is generated on the second connection member 4 of the connection member 10, and the second connection member 4 is pressed to retract until the second connection member is immersed into the fixing portion 21 of the output shaft 2. As the insertion proceeds further, the second connecting part 4 continues to be pressed against the inner wall of the through-hole. When the insertion depth of the output shaft 2 of the driving motor 1 reaches the designed depth, the axis of the connecting part 10 is exactly coincident with the axis of the limiting hole 64, and because the aperture is larger than the shaft diameter, the pressing force is eliminated at this time, and the connecting part 10 is ejected from the natural state and stretches into the limiting hole 64. The connecting part 10 and the limiting hole 64 are interlocked to form a limit, and the output shaft 2 cannot be inserted or withdrawn in the connecting channel 63 continuously in the axial direction. In this way an effective fixation is formed between the drive motor 1 and the wind blade part 6.

The implementation of the axial flow fan blade and the centrifugal fan blade is similar to the above-described embodiments.

In a preferred embodiment, the resilient element inside the connecting part 10 is a spring. In other application scenarios, the elastic element inside the connecting part 10 may also be designed as a spring.

In the preferred embodiment, the connecting member 10 is designed as a single-sided telescopic structure, and the limiting aperture 64 of the motor is a single aperture. In other application scenarios, the connecting part 10 is designed to be of a symmetrical structure with two open sides, the two open sides of the first connecting part 3 are provided with shrinkage openings, and the two second connecting parts 4 can freely stretch and retract from the two open sides of the first connecting part 3; the limiting aperture 64 may also be designed as two symmetrical apertures.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

the fan blade structure comprises a driving motor 1, wherein a fixing part 21 is arranged on an output shaft 2 of the driving motor 1; a connection member 10, the connection member 10 having a first connection member 3 and a second connection member 4; the first connecting member 3 is connected to the fixing portion 21, and the second connecting member 4 is connected to the first connecting member 3 so as to be relatively movable; the fan blade part 6, the fan blade part 6 is provided with a connecting channel 63 for accommodating the output shaft 2, and the side wall of the connecting channel 63 is provided with a limit hole 64; when the output shaft 2 is inserted into the connection channel 63, the second connection member 4 is inserted into the limiting hole 64 to fix the relative positions of the fan blade member 6 and the output shaft 2. With the above arrangement, by using the movably arranged second connecting member 4, when the output shaft 2 is inserted into the connecting channel 63, the second connecting member 4 moves relative to the first connecting member 3, so that the connecting member 10 prevents the output shaft 2 from falling out of the connecting channel 63, thereby achieving the effect of fixing the driving motor 1 and the fan blade member 6, and solving the problem that the fan blade of the fan in the prior art is easily damaged during assembly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that, where azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., indicate azimuth or positional relationships generally based on those shown in the drawings, only for convenience of description and simplification of the description, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a fan blade structure which characterized in that includes:

a driving motor (1), wherein a fixing part (21) is arranged on an output shaft (2) of the driving motor (1);

a connection part (10), the connection part (10) having a first connection part (3) and a second connection part (4); the first connecting part (3) is connected with the fixed part (21), and the second connecting part (4) is connected with the first connecting part (3) in a relatively movable way;

the fan blade part (6), the fan blade part (6) is provided with a connecting channel (63) for accommodating the output shaft (2), and a limiting hole (64) is formed in the side wall of the connecting channel (63); when the output shaft (2) is inserted into the connecting channel (63), the second connecting part (4) is inserted into the limiting hole (64) so as to fix the relative positions of the fan blade part (6) and the output shaft (2).

2. Fan blade structure according to claim 1, characterized in that the first connecting part (3) is provided with a containing cavity (31) for containing the second connecting part (4), an elastic piece (5) is arranged in the containing cavity (31), one end of the elastic piece (5) is connected with the first connecting part (3), and the other end of the elastic piece (5) is connected with the second connecting part (4).

3. Fan blade structure according to claim 2, characterized in that the second connecting part (4) has a connection state and an avoidance state, when the second connecting part (4) is in the connection state, the elastic piece (5) pushes the second connecting part (4) to move to the outer side of the accommodating cavity (31) so that the second connecting part (4) is inserted into the limiting hole (64); when the second connecting part (4) is in the avoidance state, at least part of the second connecting part (4) is positioned in the accommodating cavity (31) so that the output shaft (2) is movably arranged in the connecting channel (63).

4. Fan blade structure according to claim 2, characterized in that the second connection part (4) comprises:

a moving body (41), wherein the moving body (41) is positioned in the accommodating cavity (31), and the elastic piece (5) is connected with the moving body (41);

the connecting body (42), connecting body (42) with remove body (41) and be connected, connecting body (42) keep away from the one end of connecting body (42) has connector (421), at least part of connector (421) is the arc.

5. The fan blade structure according to claim 4, wherein the connection body (42) and the moving body (41) are both cylindrical structures, the diameter of the connection body (42) is smaller than that of the moving body (41), the first connection part (3) comprises a containing body (32) and a limiting body (33) connected with the containing body (32), the elastic piece (5) is arranged in the containing body (32), and the limiting body (33) is used for being abutted with the moving body (41) so as to limit the position of the moving body (41).

6. Fan blade structure according to claim 1, characterized in that the fixing portion (21) is provided with a communication groove, the outer surface of the output shaft (2) is provided with a mounting plane (22), and the extending direction of the mounting plane (22) and the extending direction of the communication groove are parallel to each other.

7. Fan blade structure according to claim 1, characterized in that the length of the second connecting part (4) is L and the diameter of the output shaft (2) is D along the moving direction of the second connecting part (4); wherein L is less than D.

8. A fan blade structure according to claim 1, characterized in that the fan blade part (6) comprises:

the fan comprises a fan body (61), wherein a plurality of blades (611) are arranged on the fan body (61);

and the shaft sleeve part (62), the shaft sleeve part (62) is connected with the fan blade body (61), and the connecting channel (63) is arranged on the shaft sleeve part (62).

9. The fan blade structure according to claim 8, wherein the shaft sleeve component (62) comprises a connection port communicated with the connection channel (63), a guide surface (631) is arranged at the connection port, and a preset included angle exists between the extending direction of the guide surface (631) and the extending direction of the connection channel (63).

10. A fan comprising a fan blade structure, characterized in that the fan blade structure is as claimed in any one of claims 1 to 9.