A ceiling fan structure

Abstract

This utility model discloses a ceiling fan structure, including a fan blade assembly and movable blades. Two or more movable blades are installed on the upper side of the fan blade assembly. The fan blade assembly has connecting seats distributed radially for corresponding to the movable blades. A connecting head is vertically arranged at the root of each movable blade, corresponding to and rotatably connected to the connecting seat. An elastic element connects the connecting seat and the connecting head. This ceiling fan structure can both conceal the fixed blades and hide the movable blades when the fan is stopped, making it more aesthetically pleasing when stationary and significantly reducing the space occupied by the movable blades. When the fan is in use, the fan blade assembly generates airflow within a corresponding range below the fan blade assembly through the fixed blades, while the movable blades unfold and blow air, creating a double-layer airflow effect and increasing the airflow range. This gives the fan a good static compactness and dynamic effect, and effectively reduces the structural size of the ceiling fan.

Description

Technical Field

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

[0002] Currently, ceiling fans are a very mature and widely used fan product. They function by blowing air downwards when installed on the ceiling or suspended ceiling structure. Among the older products, there are already many products that combine pendant lights and ceiling fans. The central part of the ceiling fan body is the light body, and the fan blades are also set. Therefore, some products are designed with the fan blades to unfold radially when the ceiling fan is turned on and retract to the outer periphery when the fan stops. As a result, the airflow of the ceiling fan can only be generated in the outer periphery when the fan blades are unfolded, and the fan blades can still be seen when the fan stops, making it difficult to make the appearance more concise. Utility Model Content

[0003] The purpose of this invention is to provide a ceiling fan structure with double-layered blades that unfolds and retracts during operation, and aesthetically conceals the blades when the fan is stopped.

[0004] A ceiling fan structure includes a fan blade assembly and movable blades. Two or more movable blades are mounted on the upper side of the fan blade assembly. The fan blade assembly has connecting seats distributed radially for corresponding to the movable blades. The root of each movable blade is vertically provided with a connecting head that is rotatably connected to the connecting seat. An elastic element is connected between the connecting seat and the connecting head. The fan blade assembly is also provided with fixed blades.

[0005] As a preferred embodiment of this utility model, the connector is cylindrical, the connector seat is provided with a fixing seat, the fixing seat is provided with a corresponding circular hole for the connector to pass through, the end of the connector is detachably connected to a limiting member, the outer diameter of the limiting member is larger than the circular hole of the fixing seat, and the lower side of the fixing seat is provided with a first limiting part and a second limiting part distributed circumferentially, the limiting member is provided with a snap-fit ​​part for limiting and abutting against the first limiting part and the second limiting part respectively, one end of the elastic member is connected to the fixing seat or the connector seat, and the other end of the elastic member is connected to the limiting member or the connector.

[0006] As a preferred embodiment of this utility model, a spline shaft extending axially is provided in the middle of a section of the connector facing the limiting member, and the limiting member is also provided with a spline groove matching the spline shaft.

[0007] As a preferred embodiment of this utility model, the connector is concentrically connected to the limiting member by bolts.

[0008] As a preferred embodiment of this utility model, the inner side of one end of the connector facing the limiting member is sleeved with the upper outer wall of a bushing pressure member. The limiting member has a circular enclosure wall protruding on one side facing the connector. The circular enclosure wall is fitted by the central hole of the bushing pressure member. The lower outer wall of the bushing pressure member is sleeved by the inner wall of the circular hole of the fixing seat.

[0009] As a preferred embodiment of this utility model, the elastic element is a torsion spring surrounding the circular wall, the circular wall is provided with a slot for connecting one end of the elastic element, and the second limiting part is provided with a groove or slot for connecting the other end of the elastic element.

[0010] As a preferred embodiment of this utility model, the outer periphery of the wind turbine is provided with an annular outer wall that surrounds and connects to each of the fixed blades.

[0011] As a preferred embodiment of this utility model, the inner wall of the annular outer wall is provided with reinforcing ribs that extend obliquely upward from the lower end of the fixed blade to the upper end of the adjacent fixed blade.

[0012] As a preferred embodiment of this utility model, the connecting seat is provided with a positioning hole, the fixing seat is provided with an insert that fits into the positioning hole, and the connecting seat and the fixing seat are respectively provided with connecting holes for connecting screws or bolts.

[0013] As a preferred embodiment of this utility model, the connecting seat is disposed on the upper side of the fixed blade, and the lower side of the fixed blade is provided with an opening corresponding to the connecting seat, and a cover plate that can be detachably covered by the opening of the connecting seat. The shape of the cover plate matches the shape of the fixed blade, and the cover plate is provided with a buckle that connects to the buckle hole of the insert.

[0014] Compared with the prior art, the ceiling fan structure of this utility model has the following advantages: When the fan blades rotate, the movable blades unfold by rotating along the connecting seat via the connecting head, causing the ends of the movable blades to be thrown radially outward under centrifugal force, thus creating a wider airflow. When the fan blades stop rotating, the movable blades return to their original position under the action of the elastic element and are stored on the upper side of the fan blades. The fan blades also have fixed blades, so when the ceiling fan stops, the movable blades naturally retract and cover the upper side of the fan blades. The design cleverly conceals both the fixed and movable blades on the upper side of the fan blade assembly, making the fan more aesthetically pleasing when stationary and significantly reducing the space occupied by the movable blades. When the fan is in use, the fixed blades generate airflow within the corresponding area below the fan blade assembly, while the movable blades unfold to blow air, creating a double-layer airflow effect and increasing the airflow range. This design gives the fan a compact and dynamic look, effectively simplifying the size of the fan structure, making it easier to package, transport, and store, and thus offering high practical value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the movable blades when they are retracted in an application embodiment of this utility model;

[0016] Figure 2 This is an exploded view of the overall structure of one embodiment of the present invention;

[0017] Figure 3 This is an exploded view of the structure of one movable blade in an embodiment of this utility model;

[0018] Figure 4 yes Figure 3 A diagram from another angle;

[0019] Figure 5 This is a schematic diagram of the structure of the fan blade component in an embodiment of this utility model. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] In the description of this utility model, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In the description of this utility model, it should also be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the machine or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0023] refer to Figure 1 and 2According to a preferred embodiment of the present invention, a ceiling fan structure includes a fan blade 1 and movable blades 2. Two or more movable blades 2 are mounted on the upper side of the fan blade 1. The fan blade 1 has connecting seats 11 distributed radially for corresponding to the movable blades 2. The root of the movable blade 2 is vertically provided with a connecting head 21 corresponding to and rotatably connected to the connecting seat 11. An elastic member 5 is connected between the connecting seat 11 and the connecting head 21. When the fan blade 1 rotates, the movable blades 2 unfold by rotating along the connecting seat 11 through the connecting head 21, so that the ends of the movable blades 2 are thrown radially outward under the action of centrifugal force to form a larger range of airflow. When the fan blade 1 stops rotating, the movable blades 2 are in the elastic member 5. Under the action of component 5, the movable blade 2 is reset and stored on the upper side of the fan blade component 1. The fan blade component 1 is also provided with fixed blades 12. Therefore, when the ceiling fan stops, the movable blade 2 is naturally stored and covers the upper side of the fan blade component 1. This can both cover the fixed blades 12 and hide the movable blade 2 on the upper side of the fan blade component 1, which can better hide each blade and make the ceiling fan more aesthetically pleasing when it stops. At the same time, it can greatly reduce the space occupied by the movable blade 2. When the ceiling fan is turned on, the fan blade component 1 can generate airflow through the fixed blades 12 in the corresponding range below the fan blade component 1. At the same time, the movable blade 2 unfolds and blows air, forming a double-layer fan blade airflow and increasing the range. This gives the fan a good static compactness and dynamic effect. Moreover, it can effectively simplify the structure and size of the ceiling fan, making it easy to package, transport and store, and has high use value.

[0024] refer to Figure 2-5For example, the connector 21 is cylindrical, the connector 11 is provided with a fixing seat 3, the fixing seat 3 is provided with a corresponding circular hole for the connector 21 to pass through, the end of the connector 21 is detachably connected to a limiting member 4, the outer diameter of the limiting member 4 is larger than the circular hole of the fixing seat 3, and the lower side of the fixing seat 3 is provided with a first limiting part 31 and a second limiting part 32 distributed circumferentially, the angular distance between the first limiting part 31 and the second limiting part 32 along the circumferential direction of the fixing seat 3 is exactly the position angular difference when the movable blade 2 unfolds and resets, the limiting member 4 is provided with a snap-fit ​​part 41 for limiting and abutting against the first limiting part 31 and the second limiting part 32 respectively. One end of the elastic element 5 is connected to the fixed base 3 or the connecting base 11, and the other end of the elastic element 5 is connected to the limiting element 4 or the connecting head 21. The elastic element 5 can drive the movable blade 2 to rotate towards the reset position when it is retracted or closed in the circumferential direction. When the fan blade 1 rotates to a certain speed or above, the movable blade 2 can be subjected to sufficient centrifugal force to overcome the elastic force of the elastic element 5. The first limiting part 31 and the second limiting part 32 are respectively used to be abutted by the locking part 41 to limit the movable blade 2 from exceeding the corresponding position when it is unfolded and retracted. At the same time, since the limiting element 4 is located from the bottom of the fixed base 3, it can prevent the movable blade 2 from causing the connecting head 21 to detach from the connecting base 11 from the top.

[0025] refer to Figure 3 and 4 For example, the connector 21 has a spline shaft 22 extending axially in the middle of a section facing the limiting member 4, and the limiting member 4 is also provided with a spline groove 42 that matches the spline shaft 22. By inserting the spline shaft 22 and the spline groove 42 axially, the circumferential rotation transmission of the two can be realized, and the alignment can be easily ensured by the corresponding spline shape.

[0026] refer to Figure 3 and 4 For example, the connector 21 is concentrically connected to the limiting member 4 by a bolt. A washer is provided between the upper side of the connector 21 and the bolt. The bottom side of the limiting member 4 is also provided with a nut groove for placing a nut that can be threadedly connected to the bolt, thereby further strengthening the connection between the connector 21 and the limiting member 4, making the connection very firm.

[0027] refer to Figure 3 and 4For example, the inner side of the end of the connector 21 facing the limiting member 4 is sleeved with the upper outer wall of the bushing pressure member 6. The limiting member 4 is provided with a circular surrounding wall 43 protruding on the side facing the connector 21, surrounding the spline shaft 22 and the spline groove 42. The circular surrounding wall 43 is sleeved by the center hole of the bushing pressure member 6. The lower outer wall of the bushing pressure member 6 is sleeved by the inner wall of the circular hole of the fixing seat 3. The limiting member 4 can be precisely and stably pivoted through the bushing pressure member 6, and it is convenient to align during assembly.

[0028] refer to Figure 3 and 4 For example, the elastic element 5 is a torsion spring surrounding the circular wall 43. The circular wall 43 is provided with a slot 431 connecting one end of the elastic element 5. The second limiting part 32 is provided with a groove or slot connecting the other end of the elastic element 5. The groove or slot of the second limiting part 32 can be similar to the slot 431 or be a right angle shape, or it can be a structure commonly used in the prior art. The elastic element 5 of the torsion spring uses the circular wall 43 as a guide, and it is easy to place on the limiting part 4 during assembly. Then, it is covered by the bushing pressure part 6 to prevent dislocation. Therefore, the elastic element 5 can control the position of the movable blade 2 well through its own elastic torque. Of course, the elastic element 5 can also be a spring arranged in the circumferential direction, as long as it is arranged around the circular wall 43.

[0029] refer to Figure 1 , 2 5. For example, the outer periphery of the fan blade 1 is provided with an annular outer wall 13 that surrounds and connects to each of the fixed blades 12, thereby making the overall structure of the fan blade 1 more robust, especially the fixed blades 12 more stable, and improving the stability and durability of the ceiling fan during operation.

[0030] refer to Figure 2 and 5 For example, the inner wall of the annular outer wall 13 is provided with reinforcing ribs 131 that extend obliquely upward from the lower end of the fixed blade 12 toward the upper end of the adjacent fixed blade 12, thereby further strengthening the structural strength of the fan blade 1 and making it more stable during operation.

[0031] refer to Figure 2-5 For example, the connecting seat 11 is provided with a positioning hole 111, and the fixing seat 3 is provided with an insert 33 that fits into the positioning hole 111. The connecting seat 11 and the fixing seat 3 are respectively provided with connecting holes for connecting screws or bolts. During assembly, the connecting seat 11 can be aligned and connected first, and then the two can be fastened by screws or bolts.

[0032] refer to Figure 2-5For example, the connecting seat 11 is disposed on the upper side of the fixed blade 12, and the lower side of the fixed blade 12 is provided with an opening corresponding to the connecting seat 11, and a cover plate 7 that can be detachably covered by the opening of the connecting seat 11. The shape of the cover plate 7 matches the shape of the fixed blade 12, thereby ensuring that the fixed blade 12 where the connecting seat 11 is located can also normally push the airflow through the lower side. The cover plate 7 is provided with a buckle 71 that connects to the buckle hole of the insert 33. Preferably, there is at least one fixed blade 11 without a connecting seat 11 between each fixed blade 12 where the connecting seat 11 is located, ensuring that the blowing performance and structure are more robust and reasonable, and the movable blade 2 is also more stably supported.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A ceiling fan structure, characterized in that: The device includes a fan blade assembly and movable blades. Two or more movable blades are mounted on the upper side of the fan blade assembly. The fan blade assembly has connecting seats distributed radially for corresponding to the movable blades. The root of each movable blade is vertically provided with a connecting head that is rotatably connected to the connecting seat. An elastic element is connected between the connecting seat and the connecting head. The fan blade assembly is also provided with fixed blades.

2. The ceiling fan structure according to claim 1, characterized in that: The connector is cylindrical, and the connector seat is provided with a fixing seat. The fixing seat is provided with a corresponding circular hole through which the connector passes. The end of the connector is detachably connected to a limiting member. The outer diameter of the limiting member is larger than the circular hole of the fixing seat. The lower side of the fixing seat is provided with a first limiting part and a second limiting part distributed circumferentially. The limiting member is provided with a snap-fit ​​part for limiting and abutting against the first limiting part and the second limiting part respectively. One end of the elastic member is connected to the fixing seat or the connector seat, and the other end of the elastic member is connected to the limiting member or the connector.

3. A ceiling fan structure according to claim 2, characterized in that: A spline shaft extending axially is provided in the middle of a section of the connector facing the limiting member, and the limiting member is also provided with a spline groove that matches the spline shaft.

4. A ceiling fan structure according to claim 3, characterized in that: The connector is concentrically connected to the limiting member by bolts.

5. A ceiling fan structure according to claim 2, characterized in that: The inner side of the connector facing the limiting member is sleeved with the upper outer wall of a bushing pressure member. The limiting member has a circular enclosure wall protruding on the side facing the connector. The circular enclosure wall is fitted by the central hole of the bushing pressure member. The lower outer wall of the bushing pressure member is sleeved by the inner wall of the circular hole of the fixing seat.

6. A ceiling fan structure according to claim 5, characterized in that: The elastic element is a torsion spring surrounding the circular wall. The circular wall is provided with a slot for connecting one end of the elastic element, and the second limiting part is provided with a groove or slot for connecting the other end of the elastic element.

7. A ceiling fan structure according to any one of claims 1-6, characterized in that: The outer periphery of the wind turbine is provided with an annular outer wall that surrounds and connects to each of the fixed blades.

8. A ceiling fan structure according to claim 7, characterized in that: The inner wall of the annular outer wall is provided with reinforcing ribs that extend obliquely upward from the lower end of the fixed blade to the upper end of the adjacent fixed blade.

9. A ceiling fan structure according to claim 2, characterized in that: The connecting seat is provided with a positioning hole, the fixing seat is provided with an insert that fits into the positioning hole, and the connecting seat and the fixing seat are respectively provided with connecting holes for connecting screws or bolts.

10. A ceiling fan structure according to claim 9, characterized in that: The connecting seat is disposed on the upper side of the fixed blade, and the lower side of the fixed blade is provided with an opening corresponding to the connecting seat, and a cover plate that can be detachably covered by the opening of the connecting seat. The shape of the cover plate matches the shape of the fixed blade, and the cover plate is provided with a buckle that connects to the buckle hole of the insert.

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