A type of splicable fan blade

Abstract

This utility model relates to the field of fan technology, specifically to a connectable fan blade, including a connecting blade and an extension blade. The root of the connecting blade is fixedly connected to the fan rotor, and the outer end of the connecting blade is connected to the connecting end of the extension blade. A plug-in mechanism is provided between the connecting blade and the extension blade, configured to plug the front end of the extension blade into the outer end of the connecting blade. An anti-detachment component is also provided between the connecting blade and the extension blade. When the connecting blade and the extension blade are plugged in, the anti-detachment component is automatically triggered and locks the connecting blade and the extension blade to prevent the extension blade from falling off. In this application, the plug-in mechanism allows for quick connection of the connecting blade and the extension blade. When both are plugged in, the anti-detachment component automatically locks, resisting the centrifugal force and airflow impact of high-speed rotation, preventing the extension blade from falling off, thus improving the stability of the connection and facilitating user installation.

Description

[Technical Field]

[0001] This utility model relates to the field of fan technology, specifically to a splicable fan blade. [Background Technology]

[0002] Traditional fan blades are generally a one-piece structure. Ceiling fan blades, especially those used in factories, are often quite long. While factory ceiling fans operate at lower speeds, their blades are longer than those of typical household ceiling fans to improve airflow. However, excessively long blades present several challenges during packaging and transportation. For example, longer blades are more susceptible to damage during transport, and they also increase packaging costs.

[0003] To address the aforementioned issues, splicable fan blades have emerged on the market. For example, application number "202421554969.9" discloses a fan blade splicing structure. This application achieves splicing through an interlocking structure of the first and second fan blades. Specifically, several interlocking blocks are set on the first fan blade, and locking blocks are set on the interlocking blocks. The second fan blade is set with interlocking slots and locking slots corresponding to the interlocking blocks. After the two are spliced, the locking blocks are locked into the locking slots, and the splicing is completed. However, this design is prone to loosening or even falling off in the later stages.

[0004] In addition to the above methods, bolts are also used for connection. For example, application number "201220078005.2" discloses an improved ceiling fan. The fan blades of this application consist of two short fan blades, which are connected and fixed by bolts. However, bolt connection is inconvenient for users during installation, requiring the user to provide corresponding tools. Furthermore, the installation quality is difficult to guarantee, and problems such as incomplete tightening are prone to occur.

[0005] In view of the above-mentioned technical problems, this utility model is proposed in this study. [Utility Model Content]

[0006] The technical problem to be solved by this utility model is to provide a splicable fan blade. By setting the connecting blade and the extended blade to a plug-in fit, the problem of inconvenience for users to connect with bolts is solved. In addition, an anti-detachment component is set to strengthen the connection between the two and solve the problem of unstable connection between the connecting blade and the extended blade.

[0007] To solve the above-mentioned technical problems, this utility model proposes a splicable fan blade, including a connecting blade 1 and an extended blade 2. The root of the connecting blade 1 is fixedly connected to the fan rotor, and the outer end of the connecting blade 1 is connected to the connecting end of the extended blade 2. An insertion mechanism 3 is provided between the connecting blade 1 and the extended blade 2. The insertion mechanism 3 is configured to insert the front end of the extended blade 2 into the outer end of the connecting blade 1. An anti-detachment component 4 is also provided between the connecting blade 1 and the extended blade 2. When the connecting blade 1 and the extended blade 2 are inserted into place, the anti-detachment component 4 is automatically triggered and locks the connecting blade 1 and the extended blade 2 to prevent the extended blade 2 from falling off.

[0008] As described above, in a splicable fan blade, the insertion mechanism 3 includes an insertion part 30 formed on the front end of the connecting blade 1 and a pair of elastic clips 31 formed on the front end of the insertion part 30. The insertion mechanism 3 also includes a connecting part 32 formed on the outer end of the extended blade 2. The connecting part 32 has a socket 320 for the insertion part 30 to be inserted into. The rear ends of the socket 320 have insertion slots 321 formed on both sides for accommodating and engaging the corresponding elastic clips 31.

[0009] As described above, in a splicable fan blade configuration, the insertion slot 321 is connected to the outside environment.

[0010] As described above, in a splicable fan blade, the elastic clip 31 includes an elastic part 310 connected to the insertion part 30 and a clipping part 311 disposed at the front end of the elastic part 310.

[0011] As described above, in a splicable fan blade, the front end of the snap-fit ​​part 311 is bent inward into an arc shape.

[0012] As described above, in a splicable fan blade, the front end of the insertion part 30 is provided with a limiting part 33, the limiting part 33 is located between the two elastic clips 31, and the extended blade 2 between the two insertion slots 321 is formed with an abutment part 34. When the connecting blade 1 and the extended blade 2 are inserted into place, the limiting part 33 abuts against the abutment part 34.

[0013] As described above, in a splicable fan blade, the connecting part 32 is formed on the upper surface of the end of the extended blade 2, and the insertion part 30 is formed on the upper front end of the connecting blade 1.

[0014] As described above, in a splicable fan blade, the insertion part 30 is formed with several reinforcing ribs.

[0015] As described above, the splicable fan blade includes an anti-detachment component 4 comprising a hook 40 on the front end of the connecting part 32 and an anti-detachment groove 41 on the connecting blade 1 that engages with the hook 40.

[0016] As described above, in a splicable fan blade, the hook 40 is located at the upper middle part of the connecting part 32.

[0017] Compared with existing technologies, the modular fan blade of this invention has the following advantages:

[0018] 1. In this application, the connecting blade and the extended blade can be quickly connected by the plug-in mechanism. When the two are plugged in, the anti-detachment component can automatically lock, which can resist the centrifugal force and airflow impact of high-speed rotation and prevent the extended blade from falling off. This not only improves the stability of the connection, but also facilitates user installation.

[0019] 2. In this application, the protruding parts of the plug-in mechanism and the anti-detachment component are all located on the upper surface of the fan blade, ensuring that the windward surface is flat and smooth, reducing wind resistance and eddy noise from the source, and improving fan efficiency. [Attached Image Description]

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 yes Figure 1 The enlarged structural diagram at point A is shown in the image.

[0023] Figure 3 This is an exploded structural diagram of the present invention.

[0024] Figure 4 This is another exploded structural diagram of the present invention.

[0025] In the picture:

[0026] 1. Connect the blades;

[0027] 2. Lengthen the blades;

[0028] 3. Insertion mechanism; 30. Insertion part; 31. Elastic locking element; 310. Elastic part; 311. Locking part; 32. Connecting part; 320. Insertion hole; 321. Insertion slot; 33. Limiting part; 34. Abutting part;

[0029] 4. Anti-detachment component; 40. Hook; 41. Anti-detachment slot.

Detailed Implementation Methods

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] like Figure 1-4As shown, this utility model includes a splicable fan blade, comprising a connecting blade 1 and an extended blade 2. The root of the connecting blade 1 is fixedly connected to the fan rotor, and the outer end of the connecting blade 1 is connected to the connecting end of the extended blade 2. A plug-in mechanism 3 is provided between the connecting blade 1 and the extended blade 2. The plug-in mechanism 3 is configured to plug the front end of the extended blade 2 to the outer end of the connecting blade 1. An anti-detachment component 4 is also provided between the connecting blade 1 and the extended blade 2. When the connecting blade 1 and the extended blade 2 are plugged in, the anti-detachment component 4 is automatically triggered and locks the connecting blade 1 and the extended blade 2 to prevent the extended blade 2 from falling off.

[0032] In this application, the connecting blade 1 and the extended blade 2 can be quickly connected by the plug-in mechanism 3. When the two are plugged in, the anti-detachment component 4 can automatically lock, which can resist the centrifugal force and airflow impact of high-speed rotation and prevent the extended blade 2 from falling off. This not only improves the stability of the connection, but also facilitates user installation.

[0033] like Figure 2-4 As shown, as a further embodiment, the insertion mechanism 3 includes an insertion portion 30 formed on the front end of the connecting blade 1 and a pair of elastic clips 31 formed on the front end of the insertion portion 30. The insertion mechanism 3 also includes a connecting portion 32 formed on the outer end of the extended blade 2. The connecting portion 32 has a socket 320 for the insertion portion 30 to be inserted into. The rear ends of the socket 320 have insertion slots 321 formed on both sides to accommodate the corresponding elastic clips 31 and engage with them. The elastic clip 31 includes an elastic portion 310 connected to the insertion portion 30 and a clipping portion 311 located at the front end of the elastic portion 310. The anti-detachment component 4 includes a hook 40 located at the front end of the connecting portion 32 and an anti-detachment slot 41 located on the connecting blade 1 that engages with the hook 40.

[0034] When assembling the connecting blade 1 and the extended blade 2, the user only needs to align the elastic clip 31 with the insertion hole 320 and insert it. The elastic part 310 in the elastic clip 31 is compressed and the two are relatively close and deformed until the locking part 311 is inserted into the insertion slot 321. The elastic part 310 then returns to its original position, and the locking part 311 is locked in the insertion slot 321. At the same time, when the extended blade 2 and the connecting blade 1 are inserted into place, the hook 40 will automatically lock into the anti-detachment slot 41. By hooking the extended blade 2 into the anti-detachment slot 41 through the hook 40, the extended blade 2 can be further prevented from detaching, strengthening the connection between the two and improving safety performance.

[0035] like Figure 2-4As shown, as a further embodiment, the connecting part 32 is formed on the upper surface of the end of the extended blade 2, and the insertion part 30 is formed on the upper front end of the connecting blade 1. By setting the connecting part 32 on the upper surface of the end of the extended blade 2, after the connecting blade 1 and the extended blade 2 are connected, the entire bottom surface of the fan blade is a complete surface, and the bottom surface of the fan blade is the windward surface. This avoids the protruding structure from disturbing the windward flow field, thereby reducing wind resistance and vortex noise from the source.

[0036] like Figure 2-4 As shown, as a further embodiment, the hook 40 is located at the upper middle part of the connecting portion 32. In this embodiment, by placing the hook 40 on the upper end of the connecting portion 32, that is, on the entire upper surface of the fan blade, since the lower surface of the fan blade is the windward surface, it is possible to avoid the protruding structure from disturbing the airflow field on the windward surface, thereby reducing wind resistance and vortex noise from the source. Placing it in the middle position ensures a balanced and stable connection.

[0037] like Figure 2 As shown, as a further solution in this embodiment, to facilitate user confirmation of whether the connecting blade 1 and the extended blade 2 are properly inserted, the insertion slot 321 is configured to communicate with the outside. After the connecting blade 1 and the extended blade 2 are inserted, it can be observed whether the locking part 311 is locked in the insertion slot 321.

[0038] like Figure 2-4 As shown, as a further embodiment, to facilitate user installation, the front end of the snap-fit ​​part 311 is bent inward into an arc shape. This makes it easier for the user to align and connect the blade 1 and the extended blade 2 with the insertion hole 320, improving assembly efficiency.

[0039] like Figure 2-4 As shown, as a further solution in this embodiment, to prevent the elastic clip 31 from directly impacting the end of the insertion slot 321 and breaking due to excessive force applied by the user during assembly, a limiting part 33 is provided at the front end of the insertion part 30. The limiting part 33 is located between the two elastic clips 31, and an abutment part 34 is formed on the extended blade 2 between the two insertion slots 321. When the connecting blade 1 and the extended blade 2 are inserted into place, the limiting part 33 abuts against the abutment part 34. By setting the cooperation between the limiting part 33 and the abutment part 34, it is possible to prevent the user from applying excessive force during assembly, which could damage the elastic clip 31.

[0040] like Figure 3 and Figure 4 As shown, as a further embodiment, the insertion part 30 is formed with a plurality of reinforcing ribs. By setting the reinforcing ribs, the strength of the insertion part 30 can be improved.

Claims

1. A splicable fan blade, comprising a connecting blade (1) and an elongated blade (2), wherein the root of the connecting blade (1) is fixedly connected to a fan rotor, and the outer end of the connecting blade (1) is connected to the connecting end of the elongated blade (2), characterized in that... A plug-in mechanism (3) is provided between the connecting blade (1) and the extended blade (2). The plug-in mechanism (3) is configured to plug the front end of the extended blade (2) into the outer end of the connecting blade (1). An anti-detachment component (4) is also provided between the connecting blade (1) and the extended blade (2). When the connecting blade (1) and the extended blade (2) are plugged in, the anti-detachment component (4) is automatically triggered and locks the connecting blade (1) and the extended blade (2) to prevent the extended blade (2) from falling off.

2. The splicable fan blade according to claim 1, characterized in that... The insertion mechanism (3) includes an insertion part (30) formed on the front end of the connecting blade (1) and a pair of elastic clips (31) formed on the front end of the insertion part (30). The insertion mechanism (3) also includes a connecting part (32) formed on the outer end of the extended blade (2). The connecting part (32) has a socket (320) for the insertion part (30) to be inserted. The rear ends of the socket (320) are formed with insertion slots (321) for accommodating the corresponding elastic clips (31) and engaging with the elastic clips (31).

3. The splicable fan blade according to claim 2, characterized in that... The insertion slot (321) is connected to the outside.

4. The splicable fan blade according to claim 2, characterized in that... The elastic clip (31) includes an elastic part (310) connected to the insertion part (30) and a clip part (311) provided at the front end of the elastic part (310).

5. A splicable fan blade according to claim 4, characterized in that... The front end of the snap-fit ​​part (311) is bent inward into an arc shape.

6. A splicable fan blade according to claim 2, characterized in that... The front end of the insertion part (30) is provided with a limiting part (33), which is located between the two elastic clips (31). An abutment part (34) is formed on the extended blade (2) between the two insertion slots (321). When the connecting blade (1) and the extended blade (2) are inserted into place, the limiting part (33) abuts against the abutment part (34).

7. A splicable fan blade according to claim 2, characterized in that... The connecting part (32) is formed on the upper surface of the end of the elongated blade (2), and the plug-in part (30) is formed on the upper front end of the connecting blade (1).

8. A splicable fan blade according to claim 2, characterized in that... The insertion part (30) is formed with several reinforcing ribs.

9. A splicable fan blade according to any one of claims 2 to 8, characterized in that... The anti-detachment component (4) includes a hook (40) provided on the front end of the connecting part (32) and an anti-detachment groove (41) provided on the connecting blade (1) and engaged with the hook (40).

10. A splicable fan blade according to claim 9, characterized in that... The hook (40) is located at the middle of the upper end of the connecting part (32).

Images