Fan blade and fan

Abstract

The fan blade comprises a rotating seat and a plurality of blades, a mounting hole is formed in the central axis of the rotating seat in a penetrating mode, the mounting hole is used for being matched with a rotating shaft in an embedded mode, the two axial sides of the rotating seat are a first assembling face and a second assembling face respectively, and inward concave parts are formed in the positions, on the two radial sides of the mounting hole, of the second assembling face. A positioning piece is arranged on the rotating shaft, the two ends of the positioning piece are matched with the two inner concave parts respectively, and the rotating shaft penetrates through the mounting hole and is detachably connected with a fixing piece on the first assembling face side; the multiple blades are evenly distributed in the circumferential direction of the rotating base at intervals, and the rotating directions of the blades are the same. The problem that fan blades are prone to being damaged when an existing fan is disassembled and assembled repeatedly is solved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a fan blade and a fan. Background Art

[0002] A fan is a household appliance that blows air to the outside and accelerates air circulation. Usually, the motor shaft is connected to the fan blades, thereby driving the blades to rotate and deliver air. However, in order to ensure the overall aesthetics of the fan, the shaft and the blades are usually connected by a snap-on connection, which is difficult to disassemble after connection, and repeated disassembly and assembly can easily damage the blades. Utility Model Content

[0003] The present application provides an electrical appliance to solve the problem that the fan blades of the existing fan are easily damaged due to repeated disassembly and assembly.

[0004] In a first aspect, the present application provides a fan blade, comprising:

[0005] A swivel seat, wherein a mounting hole is formed through the axis thereof, the mounting hole is used to be embedded with a rotating shaft, the two axial sides of the swivel seat are respectively a first assembly surface and a second assembly surface, the second assembly surface is formed with inner recesses on both radial sides of the mounting hole, a positioning piece is provided on the rotating shaft, the two ends of the positioning piece are respectively matched with the two inner recesses, the rotating shaft passes through the mounting hole and is detachably connected with a fixing piece on the first assembly surface side; and

[0006] A plurality of blades are evenly spaced and distributed along the circumference of the rotating seat, and each blade has the same rotation direction.

[0007] In a possible implementation manner, a groove is formed on the first assembly surface, and the fixing member is embedded in the groove.

[0008] In a possible implementation, an annular seat is coaxially arranged in the mounting hole, the outer peripheral side of the annular seat is connected to the mounting hole by a plurality of spaced-apart support rods, a connecting hole is opened through the central axis of the annular seat, and the rotating shaft is assembled in the connecting hole.

[0009] In a possible implementation, an annular groove is provided on the second assembly surface so that a base is formed in the middle of the second assembly surface, and the base is connected to the edge of the swivel seat by a plurality of spaced reinforcing ribs; the inner recess is formed on the base.

[0010] In a possible implementation, the reinforcing rib includes two straight plate portions spaced apart from each other, a cylindrical portion is connected between the two straight plate portions, and a diameter of the cylindrical portion is greater than a thickness of the straight plate portion.

[0011] In a possible implementation, a sub-seat is provided on the base, a sub-seat is penetrated by a sub-hole cooperating with the rotating shaft, the inner recess is formed on the sub-seat and separates the sub-seat into two sub-seats, and a sharp corner is formed on the side of the sub-seat away from the base.

[0012] In a possible implementation, the angle between the cross-sectional tangent of the blade and the central axis of the rotating seat increases as the distance from the axis increases.

[0013] In a possible implementation, the cross-section of the blade gradually increases in a direction away from the central axis of the rotating base.

[0014] In a possible implementation, the thickness of the blade gradually increases in a direction approaching the central axis of the rotating base.

[0015] In a second aspect, the present application provides a fan, comprising the fan blades as described in the first aspect.

[0016] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0017] The fan blades and fan provided in this embodiment include a swivel seat and a plurality of blades. A mounting hole is opened through the central axis of the swivel seat, and the mounting hole is used to be embedded with a rotating shaft. The two sides of the axial direction of the swivel seat are respectively a first assembly surface and a second assembly surface. The second assembly surface is formed with inner recesses on both radial sides of the mounting hole. A positioning piece is provided on the rotating shaft, and the two ends of the positioning piece are respectively matched with the two inner recesses. The rotating shaft passes through the mounting hole and is detachably connected to a fixing piece on the first assembly surface side; the plurality of blades are evenly spaced along the circumference of the swivel seat, and the rotation direction of each blade is the same.

[0018] The shaft is connected to the rotating seat of the fan blade through the mounting hole, and is positioned with the rotating seat through the positioning piece on it, thereby ensuring the reliability of the shaft connection position. At the same time, it is fixedly connected to the rotating seat through the fixing piece, thereby realizing the connection between the shaft and the rotating seat, and realizing the rotation of the shaft to drive the rotation of the fan blade. In addition, by having the fixing piece and the positioning piece located on opposite sides of the rotating seat, the stability of the rotating seat during rotation can be improved, avoiding abnormal noise when the fan blades rotate, and ensuring the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0022] Figure 1 A schematic diagram of the structure of a fan blade provided in an embodiment of the present application.

[0023] Figure 2 A three-dimensional diagram of a fan blade provided in an embodiment of the present application.

[0024] Figure 3 A front view of a rotating seat in a fan blade provided in an embodiment of the present application.

[0025] Figure 4 A rear view of a rotating seat in a fan blade provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. Swivel seat; 2. Mounting hole; 3. First assembly surface; 4. Second assembly surface; 5. Inner recess; 6. Blade; 7. Groove; 8. Annular seat; 9. Support rod; 10. Connecting hole; 11. Annular groove; 12. Base; 13. Reinforcement rib; 14. Sub-seat; 15. Sharp corner. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0030] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0031] Reference Figure 1-Figure 4 , an embodiment of the present application provides a fan blade, comprising:

[0032] A swivel seat 1, wherein a mounting hole 2 is formed through the axis thereof, the mounting hole 2 is used for being embedded with a rotating shaft, the axial sides of the swivel seat 1 are respectively a first assembly surface 3 and a second assembly surface 4, the second assembly surface 4 is formed with inner recesses 5 on both radial sides of the mounting hole 2, a positioning piece is provided on the rotating shaft, and the two ends of the positioning piece are respectively matched with the two inner recesses 5, the rotating shaft passes through the mounting hole 2 and is detachably connected with a fixing piece on the first assembly surface 3 side; and

[0033] A plurality of blades 6 are evenly spaced and distributed along the circumference of the rotating seat 1, and each of the blades 6 has the same rotation direction.

[0034] The rotating shaft is connected to the rotating seat 1 of the fan blade through the mounting hole 2, and is positioned with the rotating seat 1 through the positioning piece thereon, thereby ensuring the reliability of the connecting position of the rotating shaft, and at the same time, is fixedly connected with the rotating seat 1 through the fixing piece, thereby realizing the connection between the rotating shaft and the rotating seat 1, and realizing the rotation of the rotating shaft to drive the rotation of the fan blade. In addition, by having the fixing piece and the positioning piece located on opposite sides of the rotating seat 1, the stability of the rotating seat 1 during rotation can also be improved, avoiding the occurrence of abnormal noise when the fan blades rotate, and ensuring the user experience.

[0035] The connection between the rotating shaft and the positioning member may be a fixed connection or a detachable connection. When the connection between the rotating shaft and the positioning member is a fixed connection, the rotating shaft and the positioning member may be welded, bonded or integrally formed. When the connection between the rotating shaft and the positioning member is a detachable connection, the rotating shaft and the positioning member may be plug-fitted, screw-fitted, etc. Of course, the detachable connection between the rotating shaft and the fixing member also includes screw-fitted or snap-fitted forms.

[0036] It should be noted that in order to ensure the convenience and reliability of the overall use of the device, when the shaft and the positioning member are fixedly connected, the preferred method of cooperation between the shaft and the fixing member is screw connection, and the second is to use a connection method such as a buckle where the connection part is not easily visible.

[0037] Optionally, in the present application, a rotating hole is opened on the rotating shaft, a positioning piece is passed through the rotating hole, the rotating shaft is inserted into the mounting hole 2, and the positioning piece is embedded in the inner recess 5, and the end of the rotating shaft passes through the mounting hole 2 and is screwed with the fixing piece.

[0038] Reference Figure 1-Figure 4 In some embodiments, a groove 7 is formed on the first assembly surface 3, and the fixing part is embedded in the groove 7; the setting of the groove 7 can limit and fix the fixing part, that is, the reliability of the connection position of the fixing part can be guaranteed, and at the same time, the fixing part can be surrounded and hidden to a certain extent, thereby improving the overall aesthetics of the device.

[0039] An annular seat 8 is coaxially arranged in the mounting hole 2, and the outer peripheral side of the annular seat 8 is connected to the mounting hole 2 by a plurality of spaced support rods 9, a connecting hole 10 is penetrated through the central axis of the annular seat 8, and the rotating shaft is assembled in the connecting hole 10; the arrangement of the annular seat 8 reduces the overall weight of the rotating seat 1, and the annular seat 8 is connected to the rotating seat 1 by a plurality of support rods 9 to enhance the structural strength of the annular seat 8.

[0040] Reference Figure 1-Figure 4In some embodiments, an annular groove 11 is provided on the second assembly surface 4 so that a base 12 is formed in the middle of the second assembly surface 4, and the base 12 is connected to the edge of the swivel seat 1 by a plurality of spaced reinforcing ribs 13; the inner recess 5 is formed on the base 12; the annular groove 11 is provided to reduce the weight of the swivel seat 1 and reduce the rotation energy consumption.

[0041] The reinforcing rib 13 includes two straight plate portions spaced apart, a cylindrical portion is connected between the two straight plate portions, and the diameter of the cylindrical portion is greater than the thickness of the straight plate portion; the structural strength of the reinforcing rib 13 is improved by the connection between the straight plate portion and the cylindrical portion.

[0042] The base 12 is provided with a sub-seat 14, and a sub-hole for cooperating with the rotating shaft is formed on the sub-seat 14. The inner concave portion 5 is formed on the sub-seat 14, and the sub-seat 14 is divided into two sub-seats. A sharp corner portion 15 is formed on the side of the sub-seat away from the base 12. The base 12 is used to cooperate with the rotating shaft, and the sub-seat 14 is used to cooperate with the positioning member. The setting of the sharp corner portion 15 plays a guiding role, further ensuring the stable and accurate cooperation between the positioning member and the inner concave portion 5.

[0043] Optionally, the diameter of the divided hole is larger than the diameter of the hole on the base 12 for cooperating with the rotating shaft. Correspondingly, the rotating shaft can be a stepped shaft, which further facilitates the cooperation and positioning between the rotating shaft and the rotating seat 1.

[0044] In some embodiments, the angle between the cross-sectional tangent of the blade 6 and the central axis of the rotating seat 1 increases as the distance from the axis increases. The cross-sectional area of ​​the blade 6 gradually increases in the direction away from the central axis of the rotating seat 1. This is beneficial to increase the area swept by the blade 6 and increase the air output.

[0045] The thickness of the blade 6 gradually increases in the direction close to the central axis of the rotating seat 1 , which is beneficial to improving the load capacity of the blade 6 .

[0046] Reference Figure 1-Figure 4 In summary, the fan blades provided in the present application are easy to install and disassemble, the wind sweeping area of ​​the blades 6 is increased, which is beneficial to the air outlet, and the load capacity of the blades 6 is enhanced, which can guarantee the user's usage needs during use.

[0047] Reference Figure 1-Figure 4 The embodiment of the present application further provides a fan, comprising the fan blades as described in the first aspect, and also comprising a host, a driver is provided on the host, a rotating shaft is connected to the rotating end of the driver, the rotating shaft passes through the mounting hole 2 of the rotating seat 1 and is detachably connected to the fixing member. A positioning member is provided on the rotating shaft, and the positioning member is used to cooperate with the inner concave portion 5 on the rotating seat 1 to locate the installation position of the rotating shaft.

[0048] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0049] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0050] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A fan blade, characterized in that: include: A swivel seat, wherein a mounting hole is formed through the axis thereof, the mounting hole is used to be embedded with a rotating shaft, the two axial sides of the swivel seat are respectively a first assembly surface and a second assembly surface, the second assembly surface is formed with inner recesses on both radial sides of the mounting hole, a positioning piece is provided on the rotating shaft, the two ends of the positioning piece are respectively matched with the two inner recesses, the rotating shaft passes through the mounting hole and is detachably connected with a fixing piece on the first assembly surface side; and A plurality of blades are evenly spaced and distributed along the circumference of the rotating seat, and each blade has the same rotation direction.

2. The fan blade according to claim 1, characterized in that: A groove is formed on the first assembly surface, and the fixing member is embedded in the groove.

3. The fan blade according to claim 1, characterized in that: An annular seat is coaxially arranged in the mounting hole, the outer peripheral side of the annular seat is connected to the mounting hole through a plurality of spaced support rods, a connecting hole is penetrated through the central axis of the annular seat, and the rotating shaft is assembled in the connecting hole.

4. The fan blade according to claim 1, characterized in that: An annular groove is formed on the second assembly surface so that a base is formed in the middle of the second assembly surface. The base is connected to the edge of the swivel seat through a plurality of reinforcing ribs distributed at intervals. The inner recess is formed on the base.

5. The fan blade according to claim 4, characterized in that: The reinforcing rib includes two straight plate portions which are spaced apart from each other, a cylindrical portion is connected between the two straight plate portions, and a diameter of the cylindrical portion is greater than a thickness of the straight plate portion.

6. The fan blade according to claim 4, characterized in that: The base is provided with a sub-seat, and the sub-seat is penetrated with a sub-hole cooperating with the rotating shaft. The inner concave portion is formed on the sub-seat and divides the sub-seat into two sub-seats. A sharp corner is formed on one side of the sub-seat away from the base.

7. The fan blade according to any one of claims 1 to 6, characterized in that: The angle between the cross-section tangent of the blade and the central axis of the rotating seat increases with the increase of the distance from the axis center.

8. The fan blade according to claim 7, characterized in that: The cross section of the blade gradually increases in a direction away from the central axis of the rotating seat.

9. The fan blade according to claim 7, characterized in that: The thickness of the blade gradually increases in a direction approaching the central axis of the rotating seat.

10. A fan, characterized in that: Including a fan blade as described in any one of claims 1-9.

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