Fan blade quick-mounting structure and electric fan applying same

Abstract

The utility model discloses a fan blade quick-mounting structure and an electric fan with the fan blade quick-mounting structure, and the fan blade quick-mounting structure is characterized in that a plurality of inserting positions are arranged on a hub along the circumferential direction; the fan blades are inserted into the insertion positions in a one-to-one matching manner; the fixing piece is movably installed on the hub, the fixing piece can elastically move between a first position and a second position relative to the inserting position, and the fixing piece can move from the second position and is fixed to a third position; when the fan blades are inserted into the inserting positions, the fixing pieces can be pushed to move from the second positions to the first positions; when the fan blades are inserted in place, the fixing piece can reset from the first position to the second position and has acting force on the fan blades to prevent the fan blades from being separated from the insertion positions. When the fixing piece is pushed to move to a third position, the fixing piece can lock the fan blades at the inserting position; the fan blades can be rapidly assembled and disassembled relative to the hub, installation is very convenient, and the fan blades can be installed without other tools or complex operations such as screw locking.

Description

Technical Field

[0001] The utility model relates to a fan, in particular to a fan blade quick-install structure and an electric fan using the same. Background Art

[0002] Some existing electric fan blades with detachable blades need to be fastened to the hub with a large number of bolts when installed. The process of fastening the bolts is time-consuming and labor-intensive, and the bolts need to be assisted by tools for loading and unloading, which is not convenient during operation. The installation position of the blades sometimes interferes with the tools, and the tool cannot be used smoothly during operation, which seriously affects the loading and unloading efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the utility model proposes a fan blade quick-installation structure.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The utility model also provides an electric fan with the fan blade quick-installation structure.

[0006] The fan blade quick-install structure according to the first embodiment of the utility model includes:

[0007] A wheel hub, wherein a plurality of plug-in positions are provided on the wheel hub along the circumferential direction;

[0008] A plurality of fan blades, each of the fan blades is paired and plugged into the plug-in position one by one;

[0009] A fixing member, the fixing member is movably mounted on the wheel hub, the fixing member can elastically move between a first position and a second position relative to the plug-in position, and the fixing member can move from the second position and be fixed at a third position; wherein,

[0010] When the fan blade is inserted into the plug-in position, the fixing member can be pushed to move from the second position to the first position;

[0011] When the fan blade is plugged into place, the fixing member can be reset from the first position to the second position, and exerts a force on the fan blade to prevent it from falling out of the plugging position;

[0012] When the fixing member is pushed to move to the third position, the fixing member can lock the fan blade at the plug-in position.

[0013] The fan blade quick-installation structure according to the embodiment of the utility model has at least the following beneficial effects: the fan blades can be quickly loaded and unloaded relative to the hub, and the installation is very convenient, without the need for other tools or cumbersome operations such as locking screws to install the fan blades.

[0014] According to some embodiments of the present utility model, the fixing member is in an annular shape and is coaxially rotatably installed in the hub. A plurality of sockets are provided on the fixing member, and each of the sockets is in one-to-one alignment with the insertion position. When the fan blade is installed in the insertion position, a part of the fan blade can pass through the socket and can push the fixing member from the second position to the first position through the socket.

[0015] According to some embodiments of the present utility model, one side wall of the socket is provided as an inclined surface wall, and a pushing portion is provided on the fan blade. When the pushing portion passes through the socket, it can abut against the inclined surface wall. The pushing portion pushes the inclined surface wall to drive the fixing member to move from the second position to the first position. After the pushing portion passes over the inclined surface wall, the fixing member elastically returns to the second position.

[0016] According to some embodiments of the present utility model, a stop bar is provided on the fixing member, and the stop bar is located on the moving path of the pushing portion penetrating into the socket. The pushing portion can pass over the socket and abut against the stop bar.

[0017] According to some embodiments of the present utility model, a clamping head is provided on the fixing member, a first clamping position and a second clamping position are provided on the hub, and a grid blocking position is provided between the first clamping position and the second clamping position. When the fixing member moves between the first position and the second position, the clamping head slides in the first clamping position; when the fixing member moves from the second position to the third position, the clamping head passes over the grid blocking position from the first clamping position and is clamped and fixed in the second clamping position.

[0018] According to some embodiments of the present utility model, a dial post is provided on the fixing member, a limiting port is provided on the hub, and the dial post penetrates through the limiting port and moves synchronously with the fixing member.

[0019] According to some embodiments of the present utility model, an elastic member is further included, and the elastic member has an elastic acting force on the fixing member to move it from the first position to the second position.

[0020] According to some embodiments of the present utility model, a guiding strip is provided on one of the hub and the end of the fan blade, and a sliding groove is provided on the other. The guiding strip and the sliding groove extend along the insertion direction of the fan blade relative to the insertion position, and the guiding strip and the sliding groove are slidably engaged.

[0021] According to some embodiments of the present utility model, a clamping protrusion is provided on one of the hub and the fan blade, and a clamping recess is provided on the other. After the fan blade is inserted into the insertion position in place, the clamping protrusion and the clamping recess are engaged.

[0022] The electric fan according to the second aspect embodiment of the present utility model includes a quick blade mounting structure.

[0023] The electric fan according to the embodiment of the present utility model has at least the following beneficial effects: Different hubs and fan blades can be combined and used by utilizing the quick blade mounting structure, improving the versatility and model adaptability.

[0024] The additional aspects and advantages of the present utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0026] Figure 1 is a partial structural exploded view of the quick blade mounting structure;

[0027] Figure 2 is a structural schematic diagram of the hub;

[0028] Figure 3 is a structural exploded view of the hub;

[0029] Figure 4 is a partial structural schematic diagram of the hub;

[0030] Figure 5 is an assembly schematic diagram of the interior of the hub with the fixing member and the elastic member;

[0031] Figure 6 is a structural schematic diagram of the fixing member;

[0032] Figure 7 is a structural schematic diagram of the fan blade;

[0033] Figure 8 is a state schematic diagram of the fixing member in the second position;

[0034] Figure 9 is a state schematic diagram of the fixing member in the first position;

[0035] Figure 10 is a state schematic diagram of the fixing member in the third position.

[0036] Reference numerals: hub 100; insertion position 110; first clamping position 121; second clamping position 122; grid position 123; limiting port 130; fan blade 200; pushing portion 210; fixing member 300; socket 310; inclined surface wall 311; blocking strip 320; clamping head 330; dialing post 340; elastic member 400; guiding strip 501; sliding groove 502; clamping protrusion 503; clamping recess 504. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, but should not be construed as limiting the present utility model.

[0038] The present utility model relates to a quick installation structure for wind blades, which includes a hub 100, a plurality of fan blades 200 and a fixing member 300.

[0039] As Figure 1 , Figure 2 , Figure 5 and Figure 6 shown, the hub 100 can be assembled by two half shells, and a cavity is formed inside the hub 100. The hub 100 is provided with a plurality of insertion positions 110, and the insertion positions 110 are sequentially arranged on the circumferential side wall of the hub 100 along the circumference of the hub 100, and the insertion positions 110 communicate the inside and outside of the hub 100. The opening shape of the insertion position 110 is adapted to the end shape of the fan blade 200, and one fan blade 200 is correspondingly inserted into one insertion position 110. The fixing member 300 is installed on the hub 100 and can be installed in the cavity inside the hub 100. It can be that one fixing member 300 is correspondingly installed at each insertion position 110; it can also be that the same fixing member 300 is shared by each insertion position 110, and the fixing member 300 is an integral body. The fixing member 300 can move relative to the hub 100, and the movement action of the fixing member 300 can be translation, rotation, swing, etc. In this embodiment, the fixing member 300 rotates around the axis of the hub 100. The position where the fixing member 300 moves relative to the hub 100 has a first position, a second position and a third position. The fixing member 300 elastically moves between the first position and the second position. As Figure 8 shown, when no other external force acts, the fixing member 300 is in the second position. During the process of inserting the end of the fan blade 200 into the insertion position 110, the fan blade 200 abuts against the fixing member 300. As Figure 9 shown, the fixing member 300 is pushed from the second position to the first position. When the fan blade 200 is inserted in place, the fixing member 300 loses the acting force of the fan blade 200. As Figure 8 shown, the fixing member 300 automatically resets from the first position to the second position. At this time, the fixing member 300 can prevent the fan blade 200 from disengaging from the insertion position 110 by means of clamping, dislocation, etc., so as to pre-install the fan blade 200 on the hub 100. As Figure 10As shown, the fixing member 300 can then be moved from the second position to the third position by manually toggling the fixing member 300. When the fixing member 300 is in the third position, the fixing member 300 can be fixed on the wheel hub 100, and the fan blade 200 is locked in the plug-in position 110, thereby completing the installation of the fan blade 200. When the fan blade 200 needs to be removed or replaced, the fixing member 300 is first manually moved from the third position to the second position, the lock is released, and then the fixing member 300 is toggled from the second position to the first position, and the fan blade 200 can be removed from the plug-in position 110. In this way, the fan blade 200 can be quickly loaded and unloaded relative to the wheel hub 100, and the installation is very convenient, and there is no need to use other tools or cumbersome operations such as locking screws to install the fan blade 200.

[0040] In some specific embodiments of the present invention, Figure 5 and Figure 6 As shown, the fixing member 300 corresponding to each plug-in position 110 is an integral component. The fixing member 300 is annular and is coaxially mounted inside the wheel hub 100. The fixing member 300 rotates in the wheel hub 100 around the axial direction of the wheel hub 100. A circular groove can be set in the inner cavity of the wheel hub 100, and the fixing member 300 is slidably connected to the circular groove for rotation guidance. A plurality of sockets 310 are provided on the fixing member 300, and the number of the sockets 310 is the same as the number of the plug-in positions 110, and the sockets 310 are aligned with the plug-in positions 110 one by one. The fixing member 300 rotates relative to the wheel hub 100, and each socket 310 rotates synchronously with the plug-in position 110. The fixing member 300 drives each socket 310 to move between the first position, the second position and the third position. The first position, the second position and the third position are sequentially distributed around the axial direction of the wheel hub 100. Before installation, the socket 310 is in the second position. When the end of the fan blade 200 is inserted into the plug-in position 110, a portion of the fan blade 200 is inserted into the socket 310, which pushes the socket 310 to move from the second position to the first position. After the fan blade 200 is plugged in place, the socket 310 automatically resets from the first position to the second position. The socket 310 is misaligned with the fan blade 200, thereby preventing the fan blade 200 from being disengaged from the plug-in position 110.

[0041] Further, such as Figure 6 , Figure 7 and Figure 9As shown, one side wall of the socket 310 is provided with an inclined surface wall 311. The inclined surface wall 311 has a certain intersection angle with the diameter of the fixing member 300. A pushing portion 210 is provided on the fan blade 200, and the pushing portion 210 can protrude from the end of the fan blade 200. The pushing portion 210 can be in the shape of a triangular prism as shown in the figure, or can also be in the shape of a cylinder, a boss, etc. When installing the fan blade 200, the pushing portion 210 enters the socket 310 after being inserted into the insertion position 110. The pushing portion 210 abuts against the inclined surface wall 311. The inclined surface wall 311 and the pushing portion 210 slide relative to each other, and the pushing portion 210 moves along the radial direction of the fixing member 300, and the fixing member 300 is pushed by the inclined surface wall 311 to gradually rotate around the axial direction from the second position to the first position. When the pushing portion 210 continues to move through the socket 310, the pushing portion 210 disengages from the inclined surface wall 311, and after the inclined surface wall 311 loses the acting force of the pushing portion 210, the fixing member 300 returns from the first position to the second position. At this time, the pushing portion 210 is located at the inner ring side wall of the fixing member 300 and is misaligned with the socket 310, thereby restricting the fan blade 200 from disengaging from the insertion position 110 of the socket 310.

[0042] Wherein, a stop bar 320 is provided on the fixing member 300. The stop bar 320 is located on the moving path of the pushing portion 210 penetrating into the socket 310. When the pushing portion 210 moves radially along the fixing member 300 and passes over the socket 310, the pushing portion 210 can abut against the stop bar 320, thereby having a certain limiting effect on the installation depth of the fan blade 200.

[0043] In some embodiments of the present invention, a chuck 330 is provided on the fixing member 300. In this embodiment, the chuck 330 can be provided on the stop bar 320 or can be provided at other places on the fixing member 300. The chuck 330 can be set as a round head. A first clamping position 121 and a second clamping position 122 are provided in the inner cavity of the hub 100. The first clamping position 121 extends in a groove shape around the axial direction of the hub 100. The second clamping position 122 is in a notch shape. A grid blocking position 123 is provided between the first clamping position 121 and the second clamping position 122. The grid blocking position 123 protrudes radially along the hub 100 to separate the first clamping position 121 and the second clamping position 122. When the fixing member 300 moves between the first position and the second position, the chuck 330 slides in the first clamping position 121. When the fixing member 300 moves from the second position to the third position, the chuck 330 disengages from the first clamping position 121, and then the chuck 330 crosses the grid blocking position 123 and enters the second clamping position 122, and the chuck 330 is clamped and fixed in the second clamping position 122. At this time, the fixing member 300 cannot rotate and disengage from the third position.

[0044] In some specific embodiments of the present invention, such as Figure 2 and Figure 3As shown, the fixing member 300 is provided with a lever 340. The lever 340 can extend radially from the circumferential side wall of the fixing member 300. A limiting opening 130 is provided on the wheel hub 100. The fixing member 300 is installed inside the wheel hub 100, and the lever 340 extends to the outside of the wheel hub 100 through the limiting opening 130. The lever 340 moves synchronously with the fixing member 300. The user can push the fixing member 300 to move by shifting the lever 340.

[0045] In some embodiments of the present invention, an elastic member 400 is also included. The elastic member 400 can be a torsion spring, a spring, etc. Figure 8 As shown, when the elastic member 400 is a torsion spring, the middle ring of the torsion spring is sleeved on the fulcrum inside the hub 100, one end of the elastic member 400 (torsion spring) abuts against the hub 100, and the other end abuts against the fixing member 300. The elastic member 400 has a torsional elastic force on the fixing member 300, and the elastic force drives the fixing member 300 to move from the first position to the second position. When the fan blade 200 is installed, the fixing member 300 moves from the second position to the first position, and the elastic member 400 is elastically compressed. After the fan blade 200 is installed in place, the elastic member 400 elastically resets, driving the fixing member 300 to reset from the first position to the second position.

[0046] In some specific embodiments of the present invention, one of the ends of the hub 100 and the blade 200 is provided with a guide strip 501, and the other end is provided with a slide groove 502. Figure 2 and Figure 7 As shown, in this embodiment, a guide bar 501 is provided on the hub 100, and a slide groove 502 is provided on the end of the fan blade 200. The guide bar 501 and the slide groove 502 extend along the insertion direction of the fan blade 200 relative to the plug-in position 110. When the end of the fan blade 200 is inserted into the plug-in portion, the guide bar 501 is paired and slides into the slide groove 502. The installation of the fan blade 200 is guided by the guide bar 501 and the slide groove 502, and at the same time, the fan blade 200 can be limited from swinging axially relative to the hub 100. Furthermore, one of the hub 100 and the fan blade 200 is provided with a protrusion 503, and the other is provided with a recess 504. As shown Figure 2 and Figure 7 As shown, in this embodiment, a recess 504 is provided at the end of the fan blade 200, and a protrusion 503 is provided on the hub 100. The shapes of the protrusion 503 and the recess 504 are adapted. When the fan blade 200 is inserted into the insertion position 110, the protrusion 503 is engaged in the recess 504, thereby prompting the user that the fan blade 200 is installed in place.

[0047] The present utility model also relates to an electric fan, which includes a fast blade mounting structure. The motor of the electric fan is connected to the hub 100, and the hub 100 is driven to rotate by the motor. The fast blade mounting structure can be used to combine different hubs 100 and fan blades 200, improving the versatility and model adaptability.

[0048] In the description of this specification, the description with reference to terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A quick-installation structure for a wind blade, characterized in that, include: A wheel hub (100), wherein a plurality of plug-in positions (110) are provided on the wheel hub (100) along a circumferential direction; A plurality of fan blades (200), each of the fan blades (200) being paired one by one and plugged into the plugging position (110); A fixing member (300), the fixing member (300) being movably mounted on the wheel hub (100), the fixing member (300) being capable of elastically moving between a first position and a second position relative to the plug-in position (110), and the fixing member (300) being capable of moving from the second position and being fixed at a third position; wherein: When the fan blade (200) is inserted into the insertion position (110), it is able to push the fixing member (300) to move from the second position to the first position; When the fan blade (200) is plugged into place, the fixing member (300) can be reset from the first position to the second position, and exerts a force on the fan blade (200) to prevent it from falling out of the plugging position (110); When the fixing member (300) is pushed to move to the third position, the fixing member (300) can lock the fan blade (200) in the plug-in position (110).

2. The quick assembly structure of the wind blade according to claim 1, wherein: The fixing member (300) is in the shape of a ring. The fixing member (300) is coaxially rotatably installed in the wheel hub (100). A plurality of sockets (310) are provided on the fixing member (300). Each of the sockets (310) is aligned with the plug-in position (110) one by one. When the fan blade (200) is installed in the plug-in position (110), a part of the fan blade (200) can pass through the socket (310), and the fixing member (300) can be pushed from the second position to the first position through the socket (310).

3. The quick installation structure of the wind blade according to claim 2, wherein: One side wall of the socket (310) is arranged as a sloped wall (311); a pushing portion (210) is arranged on the fan blade (200); the pushing portion (210) can abut against the sloped wall (311) when passing through the socket (310); the pushing portion (210) pushes the sloped wall (311) to drive the fixing member (300) to move from the second position to the first position; after the pushing portion (210) passes over the sloped wall (311), the fixing member (300) elastically returns to the second position.

4. The quick installation structure of the wind blade according to claim 3, characterized in that: The fixing member (300) is provided with a blocking bar (320), and the blocking bar (320) is located on the moving path of the pushing portion (210) penetrating into the socket (310), and the pushing portion (210) can pass over the socket (310) and abut against the blocking bar (320).

5. The quick assembly structure of the wind blade according to claim 1 or 2 or 4, characterized in that: The fixing member (300) is provided with a chuck (330), the hub (100) is provided with a first clamping position (121) and a second clamping position (122), a grid position (123) is arranged between the first clamping position (121) and the second clamping position (122), and when the fixing member (300) moves between the first position and the second position, the chuck (330) slides in the first clamping position (121); when the fixing member (300) moves from the second position to the third position, the chuck (330) moves over the grid position (123) from the first clamping position (121) and is clamped and fixed on the second clamping position (122).

6. The quick-installation structure of the wind blade according to claim 1 or 2, characterized in that: The fixing member (300) is provided with a dial post (340), a limiting port (130) is formed on the hub (100), the dial post (340) passes through the limiting port (130), and the dial post (340) moves synchronously with the fixing member (300).

7. The quick-installation structure of the wind blade according to claim 1, characterized in that: It further includes an elastic member (400), and the elastic member (400) has an elastic acting force on the fixing member (300) to make it move from the first position to the second position.

8. The quick installation structure of the wind blade according to claim 1, characterized in that: A guiding strip (501) is arranged on one of the end parts of the hub (100) and the fan blade (200), a sliding groove (502) is arranged on the other, the guiding strip (501) and the sliding groove (502) extend along the inserting direction of the fan blade (200) relative to the inserting position (110), and the guiding strip (501) and the sliding groove (502) are slidably connected in a matching manner.

9. The quick assembly structure of the wind blade according to claim 8, characterized in that: A clamping convex (503) is arranged on one of the hub (100) and the fan blade (200), a clamping concave (504) is arranged on the other, and after the fan blade (200) is inserted into the inserting position (110) in place, the clamping convex (503) and the clamping concave (504) are clamped in a matching manner.

10. An electric fan, characterized in that: It includes the wind blade quick-installing structure according to any one of claims 1 to 9.

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