Air guide fan blade and ceiling fan

Abstract

The utility model relates to the technical field of fans, in particular to an air guide fan blade and a ceiling fan. The air guide fan blade comprises a connecting rod, a fan blade body and a lock sleeve piece. The fan blade comprises a blade body and a fan handle, the fan handle is connected to the inner side of the blade body, and one end of the connecting rod penetrates through the fan handle; the fan handle is sleeved with the lock sleeve piece so that the fan handle can be matched with the connecting rod in a pressing mode. The problem that in the prior art, an air guide fan blade applied to an air outlet of a central air conditioner is poor in connection stability can be solved. The air guide fan blade not only can change the flow direction of air at the air outlet of the central air conditioner and achieve air diffusion, but also is higher in structural stability, better in air flow impact resistance and not prone to shaking.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a guide fan blade and a ceiling fan. Background Technology

[0002] Central air conditioning outlets or the central air conditioning unit itself are usually used in conjunction with ceiling fans to help disperse or disrupt the delivered air, prevent dead zones or temperature stratification in the room, and thus make the indoor temperature more uniform.

[0003] Existing ceiling fans include guide fan blades, which include connecting rods and blades. The blades have slots, and the connecting rod is directly inserted into the slots to achieve assembly and connection between the two.

[0004] However, the problem with the above installation structure is that the tightness of the blades and connecting rods relies on tolerance control. Under long-term impact from airflow, the connecting rod and slot are prone to fretting wear, leading to an increase in the fit clearance. This causes the blades to oscillate during the movement of the fan blades, thus affecting the airflow dispersion effect of the ceiling fan. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is to provide a guide fan blade and a ceiling fan to solve the problem of poor connection stability of the guide fan blade used at the air outlet of a central air conditioner in the prior art.

[0006] In a first aspect, the guide fan blades provided in the embodiments of this utility model include:

[0007] Connecting rod;

[0008] A fan blade, comprising a blade and a handle, wherein the handle is connected to the inner side of the blade, and one end of the connecting rod passes through the handle;

[0009] A locking kit is fitted onto the fan handle to press the fan handle against the connecting rod.

[0010] In one embodiment, the fan handle includes an outer handle wall extending circumferentially along the inner wall of the lock assembly, the outer handle wall having a slot, and the inner wall of the lock assembly having a hook that engages with the slot.

[0011] In one embodiment, the inner wall of the lock assembly is provided with a clearance groove, one end of the hook is connected to the groove wall of the clearance groove, and the other end is suspended in the clearance groove.

[0012] In one embodiment, the fan handle further includes an end wall connected to the outer handle wall; the other end of the hook is provided with an inclined surface, the inclined surface is arranged toward the central axis of the lock assembly and at an angle to the central axis of the lock assembly, the inclined surface abuts against the end wall to guide the hook into the slot.

[0013] In one embodiment, the fan blade further includes a mounting base and a connecting base, the connecting base being installed at the mounting base, the mounting base and the connecting base being disposed between the blade and the fan handle, and one end of the connecting rod being inserted into the connecting base.

[0014] In one embodiment, the connecting seat is detachably connected to the mounting seat; the fan handle includes a first connecting member and a second connecting member disposed opposite to each other, the first connecting member being integrally disposed with the mounting seat, and the second connecting member being integrally disposed with the connecting seat; two hooks and two slots are provided, the two slots being respectively disposed on the first connecting member and the second connecting member, and the two hooks being respectively engaged with the two slots.

[0015] In one embodiment, the connecting seat is provided with a locking block; the mounting seat is provided with a mounting groove, the opening of the mounting groove is oriented perpendicular to the central axis of the connecting rod, and the groove wall of the mounting groove is provided with a snap-fit ​​groove, the locking block cooperating with the snap-fit ​​groove to allow the mounting seat to be detachably connected to the connecting seat; the snap-fit ​​groove includes an inlet / outlet groove section and a snap-fit ​​groove section, one end of the inlet / outlet groove section communicating with the snap-fit ​​groove section, and the other end extending in a direction perpendicular to the central axis of the connecting rod for the locking block to be inserted or removed; the snap-fit ​​groove section extends in the direction of the central axis of the connecting rod.

[0016] In one embodiment, a first buckle is provided on the wall of the mounting groove, and a second buckle is provided on the connecting seat. When the locking block is accommodated in the locking groove section, the first buckle and the second buckle are engaged.

[0017] In one embodiment, the connector is provided with a slot, the slot including a first receiving portion and a second receiving portion, the second receiving portion being disposed on the side of the first receiving portion away from the fan handle, one end of the connecting rod is provided with a protrusion, the connecting rod passes through the first receiving portion, the protrusion is received in the second receiving portion, the outer contour of the protrusion is different from a circle, and the protrusion is adapted to the second receiving portion.

[0018] Secondly, embodiments of this utility model also provide a ceiling fan that includes the guide fan blades described in the above embodiments.

[0019] Compared with the prior art, the beneficial effect of the guide fan blade provided in this utility model embodiment is that the guide fan blade can not only change the airflow direction at the air outlet of the central air conditioner and realize the diffusion of the air, but also has higher structural stability, better resistance to airflow impact, and is less prone to shaking.

[0020] Specifically, the guide fan blade is equipped with a locking kit. After the connecting rod is installed at the fan blade, the locking kit can be fitted onto the fan handle of the fan blade. By applying pressure to the fan handle, the fan handle can be kept in close contact with the connecting rod, thereby increasing the contact area and reducing the installation gap between the two. Furthermore, under the action of airflow, the locking kit can maintain a persistent clamping force at the connection between the fan handle and the connecting rod, effectively improving the connection stability of the two during movement. Attached Figure Description

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. In the accompanying drawings:

[0022] Figure 1 This is a three-dimensional schematic diagram of the guide fan blade provided in an embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 Enlarged view of a portion of position A in the middle;

[0024] Figure 3 yes Figure 2 Disassembly diagram;

[0025] Figure 4 This is one of the schematic diagrams showing a partial disconnection of the guide fan blade provided in this embodiment of the utility model;

[0026] Figure 5 yes Figure 4 A cross-sectional view along line BB;

[0027] Figure 6 This is an internal assembly diagram of the connecting rod, locking kit, and fan handle provided in this embodiment of the utility model;

[0028] Figure 7 This is a disassembly diagram of the connector and mounting base provided in this embodiment of the utility model, wherein the locking block disengages from the locking groove;

[0029] Figure 8 This is one of the assembly state diagrams of the connecting seat and the mounting seat provided in this utility model embodiment, wherein the locking block is located at the connection between the inlet / outlet groove section and the locking groove section;

[0030] Figure 9 This is the second schematic diagram of the assembly state of the connector and the mounting base provided in this embodiment of the utility model, wherein the locking block is in the locking groove section;

[0031] Figure 10 This is a second schematic diagram of a partially disconnected fan blade provided in an embodiment of the present utility model, wherein the first clip and the second clip are engaged.

[0032] Figure 11 yes Figure 10A cross-sectional view along the CC line;

[0033] Figure 12 This is a disassembly diagram of the connecting rod and connecting seat provided in this embodiment of the utility model.

[0034] The labels for the attached figures are as follows:

[0035] 100. Guide fan blades;

[0036] 10. Connecting rod; 11. Protrusion;

[0037] 20. Fan blade; 21. Blade; 22. Fan handle; 221. Outer handle wall; 2211. Slot; 222. End wall; 223. First connector; 224. Second connector; 23. Mounting base; 231. Mounting groove; 2311. Snap-fit ​​groove; 2311a. Inlet / outlet groove section; 2311b. Snap-fit ​​groove section; 2312. First snap-fit; 24. Connecting base; 241. Locking block; 242. Second snap-fit; 243. Slot; 2431. First receiving part; 2432. Second receiving part;

[0038] 30. Lock kit; 31. Hook; 311. Inclined surface; 32. Clearance groove. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0040] This utility model embodiment provides a guide fan blade 100, which is applied to the air outlet of a central air conditioning system, such as... Figure 1 - Figure 3 As shown, the guide fan blade 100 includes a connecting rod 10, a fan blade 20, and a locking assembly 30. The fan blade 20 includes a blade 21 and a fan handle 22, with the fan handle 22 connected to the inner side of the blade 21. One end of the connecting rod 10 passes through the fan handle 22. The locking assembly 30 is fitted onto the fan handle 22 to press the fan handle 22 and the connecting rod 10 together. This application solves the problem of poor connection stability of the guide fan blade 100 used in the air outlet of a central air conditioner in the prior art. This guide fan blade 100 not only changes the airflow direction at the air outlet of the central air conditioner, realizing air diffusion, but also has higher structural stability, better resistance to airflow impact, and is less prone to shaking.

[0041] Specifically, the guide fan blade 100 is equipped with a locking kit 30. After the connecting rod 10 is installed at the fan blade 20, the locking kit 30 can be fitted onto the fan handle 22 of the fan blade 20. By applying pressure to the fan handle 22, the fan handle 22 can be kept in close contact with the connecting rod 10, thereby increasing the contact area and reducing the installation gap between the two. Furthermore, under the action of airflow, the locking kit 30 can maintain a persistent clamping force at the connection between the fan handle 22 and the connecting rod 10, effectively improving the connection stability between the two during movement.

[0042] It is worth mentioning that during the rotation of the fan blade 100, since the blade 21 is far from the center of rotation, the centrifugal force generated during the rotation will cause the connecting rod 10 and the fan handle 22 to be subjected to a large reaction force. By setting the locking kit 30, the yield stress at the connecting rod 10 and the fan handle 22 can be increased, the overall structural strength can be improved, and structural loosening can be avoided during the movement of the fan blade 100.

[0043] There are many ways to connect the lock assembly 30 and the fan handle 22. In one embodiment, the fan handle 22 includes an outer handle wall 221 that extends circumferentially along the inner wall of the lock assembly 30. The outer handle wall 221 is provided with an external thread, and the inner wall of the lock assembly 30 is provided with an internal thread. The internal thread is threaded to the external thread.

[0044] Furthermore, the outer handle wall 221 includes at least two connecting pieces (not shown in the figure). Multiple connecting pieces are spaced apart along the circumferential direction of the inner wall of the locking kit 30. Multiple connecting pieces together form an external thread. When the locking kit 30 is engaged with the fan handle 22, for example, when the locking kit 30 is tightened, the locking kit 30 can drive multiple connecting pieces to move toward the center of the fan handle 22 so that the multiple connecting pieces press against the connecting rod 10.

[0045] Reference Figure 3 - Figure 6 In another embodiment, the fan handle 22 includes an outer handle wall 221 extending circumferentially along the inner wall of the locking assembly 30. A groove 2211 is provided at the outer handle wall 221, and a hook 31 is provided at the inner wall of the locking assembly 30, engaging with the groove 2211. This arrangement, with the hook 31 cooperating with the groove 2211, securely fixes the locking assembly 30 to the fan handle 22, facilitating the action of the locking assembly 30 on the outer handle wall 221 and pressing the fan handle 22 tightly against the connecting rod 10, thus improving the connection stability between the two.

[0046] Preferably, a recessed groove 32 is provided through the inner wall of the lock assembly 30. One end of the hook 31 is connected to the groove wall of the recessed groove 32, and the other end is suspended in the recessed groove 32. The other end of the hook 31 is engaged in the slot 2211. With this arrangement, since the other end of the hook 31 is suspended in the recessed groove 32, during the engagement of the hook 31 with the fan handle 22, the other end of the hook 31 can move outward relative to the end connected to the recessed groove 32, away from the fan handle 22. This facilitates the smoother insertion of the other end of the hook 31 into the slot 2211, making it easier to install the lock assembly 30 onto the fan handle 22 and improving assembly efficiency.

[0047] Preferably, the fan handle 22 includes an end wall 222 connected to the outer handle wall 221. The other end of the hook 31 is provided with an inclined surface 311, which is set towards the central axis of the lock assembly 30 and at an angle to the central axis of the lock assembly 30. The inclined surface 311 can abut against the end wall 222 to guide the hook 31 into the slot 2211. With this configuration, in the initial stage of fitting the lock assembly 30 onto the fan handle 22, the inclined surface 311 of the hook 31 can abut against the end wall 222. During the fitting process, the inclined surface 311 can guide the other end of the hook 31 to move outward away from the fan handle 22 until the other end of the hook 31 abuts against the outer handle wall 221, and then slides down along the outer handle wall 221 into the slot 2211. This further facilitates the operator's installation and reduces the possibility of the lock assembly 30 and the fan handle 22 getting stuck during the installation process, which could prevent fitting.

[0048] Reference Figure 7 - Figure 9 In one embodiment, the fan blade 20 further includes a mounting base 23 and a connecting base 24. The connecting base 24 is mounted on the mounting base 23, and the mounting base 23 and the connecting base 24 are disposed between the blade 21 and the fan handle 22. One end of the connecting rod 10 passes through the fan handle 22 and is inserted into the connecting base 24. This arrangement has two advantages: firstly, the mounting base 23 and the connecting base 24 improve the structural strength of the connection between the connecting rod 10 and the fan blade 20, thereby enhancing connection stability; secondly, the connecting rod 10 is inserted into the connecting base 24, and when installed with the mounting base 23, the connecting base 24 increases the contact area between the connecting rod 10 and the mounting base 23, preventing the fan blade 20 from wobbling relative to the connecting rod 10, thus improving connection reliability.

[0049] In one embodiment, the mounting base 23 and the blade 21 are integrally formed, thereby reducing the number of parts and facilitating assembly.

[0050] In one embodiment, the mounting base 23 includes an extension section disposed away from the connecting rod 10, and the blade 21 is connected to the extension section. In this way, the extension section can increase the connection area between the mounting base 23 and the blade 21, thereby improving the overall structural strength of the fan blade 20.

[0051] In one embodiment, the extension section is provided with multiple perforated structures. These perforated structures reduce the weight of the mounting base 23, facilitating its handling and installation.

[0052] Reference Figure 7 - Figure 9 In one embodiment, the connecting seat 24 is detachably connected to the mounting seat 23; the fan handle 22 includes a first connecting member 223 and a second connecting member 224 disposed opposite to each other, the first connecting member 223 being integrally disposed with the mounting seat 23, and the second connecting member 224 being integrally disposed with the connecting seat 24; two hooks 31 and two slots 2211 are provided, the two slots 2211 being respectively disposed on the first connecting member 223 and the second connecting member 224, and the two hooks 31 being respectively engaged with the two slots 2211. When the connecting seat 24 is installed to the mounting seat 23, the first connecting piece and the second connecting member 224 can together form the fan handle 22, thus ensuring the strength of the connection between the connecting rod 10 and the fan blade 20. Furthermore, after the connecting rod 10 and the connecting seat 24 are engaged, it can be directly installed to the mounting seat 23, at which point the connecting rod 10 automatically fits into the fan handle 22, making the installation process more convenient and efficient. In addition, the first connector 223 and the second connector 224 are respectively provided with slots 2211. The locking kit 30 can cooperate with the two slots 2211 respectively. It can not only improve the connection fit between the fan handle 22 and the connecting rod 10, but also lock the relative position between the connecting seat 24 and the mounting seat 23, so as to make the overall connection structure of the entire guide fan blade 100 more stable and reliable.

[0053] In one embodiment, the connecting seat 24 is provided with a locking block 241; the mounting seat 23 is provided with a mounting groove 231, the opening of the mounting groove 231 is perpendicular to the central axis of the connecting rod 10, and the groove wall of the mounting groove 231 is provided with a snap-fit ​​groove 2311, the locking block 241 cooperates with the snap-fit ​​groove 2311 to allow the mounting seat 23 to be detachably connected to the connecting seat 24; the snap-fit ​​groove 2311 includes an inlet / outlet groove section 2311a and a snap-fit ​​groove section 2311b, one end of the inlet / outlet groove section 2311a is connected to the snap-fit ​​groove section 2311b, and the other end extends in a direction perpendicular to the central axis of the connecting rod 10 to allow the locking block 241 to be inserted or removed; the snap-fit ​​groove section 2311b extends in the direction of the central axis of the connecting rod 10. This configuration allows for a detachable connection between the mounting seat 23 and the connecting seat 24, and the assembly method is simpler and faster. Specifically, refer to... Figure 7 During installation, simply align the locking block 241 of the connector 24 and insert it into the inlet / outlet slot 2311a, then... Figure 8 And after the locking block 241 is at the connection point between the inlet / outlet slot section 2311a and the locking slot section 2311b, a thrust is applied to the connecting seat 24 in the direction of the blade 21, and the connection is engaged. Figure 9The locking mechanism places the locking block 241 into the locking slot 2311b, thus locking the device. To disassemble, reverse the steps on the connector 24 to disengage the locking block 241 from the locking slot 2311b, unlocking the device. In this process, the connector 24 only needs to move a small distance relative to the mounting base 23 to complete both locking and unlocking, making the operation more convenient and efficient.

[0054] Preferably, there are two locking blocks 241 and two locking slots 2311. The two locking blocks 241 are arranged opposite each other on both sides of the connector 24. The two locking blocks 241 can cooperate with the two locking slots 2311 respectively. In this way, when the two locking blocks 241 cooperate with the two locking slots 2311, the force on the connector 24 is more balanced when it is installed on the mounting base 23, which helps to improve the connection stability between the connector 24 and the mounting base 23.

[0055] Reference Figure 7 , Figure 8 , Figure 10 as well as Figure 11 In one embodiment, a first latch 2312 is provided on the wall of the mounting groove 231, and a second latch 242 is provided on the connecting seat 24. When the latching block 241 is accommodated in the snap-fit ​​groove section 2311b, the first latch 2312 and the second latch 242 are engaged. With this arrangement, the first latch 2312 and the second latch 242 cooperate to restrict the movement of the connecting seat 24 relative to the mounting groove 231, thereby locking the latching block 241 in the snap-fit ​​groove section 2311b, preventing the latching block 241 from disengaging from the snap-fit ​​groove 2311, and improving the reliability of the connection.

[0056] Reference Figure 12 In one embodiment, the connecting seat 24 is provided with a slot 243, which includes a first receiving portion 2431 and a second receiving portion 2432. The second receiving portion 2432 is located on the side of the first receiving portion 2431 away from the fan handle 22. One end of the connecting rod 10 is provided with a protrusion 11. The connecting rod 10 passes through the first receiving portion 2431, and the protrusion 11 is received in the second receiving portion 2432. The outer contour of the protrusion 11 is not circular, and the protrusion 11 is adapted to the second receiving portion 2432. With this arrangement, on the one hand, the cooperation between the protrusion 11 and the second receiving portion 2432 can restrict the rotation of the connecting rod 10 relative to the connecting seat 24, thereby improving the connection stability between the two; on the other hand, the provision of the protrusion 11 increases the contact area with the slot 243, making the connection between the connecting seat 24 and the connecting rod 10 more reliable.

[0057] An embodiment of this utility model also provides a ceiling fan (not shown in the figure), which includes the guide fan blades 100 of the above embodiments. The ceiling fan is installed below the central air conditioner. The air outlet of the central air conditioner blows air and acts on the guide fan blades 100. The guide fan blades 100 rotate relative to the central air conditioner under the action of the wind force to change the direction of the airflow, so that the air blown by the central air conditioner can cover a wider area.

[0058] In one embodiment, multiple guide fan blades 100 are provided, and the ceiling fan includes a mounting base (not shown in the figure), with multiple guide fan blades 100 arranged around and connected to the mounting base.

[0059] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A guide fan blade, used in central air conditioning, characterized in that, include: Connecting rod; A fan blade, comprising a blade and a handle, wherein the handle is connected to the inner side of the blade, and one end of the connecting rod passes through the handle; A locking kit is fitted onto the fan handle to press the fan handle against the connecting rod.

2. The guide fan blade according to claim 1, characterized in that, The fan handle includes an outer handle wall that extends circumferentially along the inner wall of the lock assembly. The outer handle wall has a slot, and the inner wall of the lock assembly has a hook that engages with the slot.

3. The guide fan blade according to claim 2, characterized in that, The inner wall of the lock assembly is provided with a clearance groove, one end of the hook is connected to the groove wall of the clearance groove, and the other end is suspended in the clearance groove.

4. The guide fan blade according to claim 3, characterized in that, The fan handle also includes an end wall connected to the outer handle wall; the other end of the hook is provided with an inclined surface, the inclined surface is arranged toward the central axis of the lock assembly and at an angle to the central axis of the lock assembly, the inclined surface abuts against the end wall to guide the hook into the slot.

5. The guide fan blade according to any one of claims 2-4, characterized in that, The fan blade also includes a mounting base and a connecting base. The connecting base is installed at the mounting base. The mounting base and the connecting base are located between the blade and the fan handle. One end of the connecting rod is inserted into the connecting base.

6. The guide fan blade according to claim 5, characterized in that, The connecting base is detachably connected to the mounting base. The fan handle includes a first connecting member and a second connecting member disposed opposite to each other. The first connecting member is integrally disposed with the mounting base, and the second connecting member is integrally disposed with the connecting base. There are two hooks and two slots. The two slots are respectively disposed on the first connecting member and the second connecting member, and the two hooks are respectively engaged with the two slots.

7. The guide fan blade according to claim 6, characterized in that, The connecting seat is provided with a locking block; the mounting seat is provided with a mounting groove, the opening of the mounting groove is perpendicular to the central axis of the connecting rod, and the groove wall of the mounting groove is provided with a snap-fit ​​groove, the locking block cooperates with the snap-fit ​​groove so that the mounting seat can be detachably connected to the connecting seat; the snap-fit ​​groove includes an inlet / outlet groove section and a snap-fit ​​groove section, one end of the inlet / outlet groove section is connected to the snap-fit ​​groove section, and the other end extends in a direction perpendicular to the central axis of the connecting rod so that the locking block can be inserted or removed; the snap-fit ​​groove section extends in the direction of the central axis of the connecting rod.

8. The guide fan blade according to claim 7, characterized in that, The mounting groove is provided with a first buckle on its groove wall, and the connecting seat is provided with a second buckle. When the locking block is accommodated in the locking groove section, the first buckle and the second buckle are engaged.

9. The guide fan blade according to claim 5, characterized in that, The connector is provided with a slot, which includes a first receiving part and a second receiving part. The second receiving part is located on the side of the first receiving part away from the fan handle. One end of the connecting rod is provided with a protrusion. The connecting rod passes through the first receiving part, and the protrusion is received in the second receiving part. The outer contour of the protrusion is different from a circle, and the protrusion is adapted to the second receiving part.

10. A ceiling fan, characterized in that, It includes the fan blades described in any one of claims 1-9 above.

Images