A reinforced blade connection structure for industrial ceiling fans

Abstract

This invention discloses a reinforced blade connection structure for industrial ceiling fans. To solve the problems of noise generation, dynamic balance issues, and increased production costs associated with existing blade connection structures for industrial ceiling fans, this invention places one end of the connecting component (4) inside the cavity of the blade (1), and connects the other end of the connecting component (4) to the turntable. Bolts (2) pass through the upper guard plate (3), the upper blade plate (6), the connecting component (4), the lower blade plate (5), and the lower guard plate (7) and are connected to nuts. The two ends of the upper guard plate (3) are connected to the two ends of the lower guard plate (7) respectively, forming a fish-shaped cavity that can cooperate with the blade (1). A portion of the upper blade plate (6), a portion of the lower blade plate (5), and a portion of the connecting component (4) are placed inside the fish-shaped cavity formed by the upper guard plate (3) and the lower guard plate (7).

Description

Technical Field

[0001] This invention relates to an industrial ceiling fan, and more particularly to a reinforced blade connection structure for an industrial ceiling fan consisting of blades, connecting components, and bolts. Background Technology

[0002] Chinese patent TWM674827U discloses a lightweight industrial ceiling fan, whose structure comprises: a main body; a plurality of fan blades; a plurality of fan blade locking fasteners; and a main body locking fastener, wherein the plurality of fan blades are respectively fixed to the main body by a plurality of screws via the plurality of fan blade locking fasteners; and the main body locking fastener is located at the center of the upper part of the main body for fixing the main body to the ceiling; wherein each of the plurality of fan blades is hollow inside, and a plurality of reinforcing ribs are provided inside the hollow, which are respectively arranged along the direction from the end to the root of the fan blade; a plurality of hollow portions are formed by the plurality of reinforcing ribs dividing the hollow interior; a first reinforcing rod; and a second reinforcing rod, wherein... Each of the plurality of hollow portions is used to pass through the plurality of screws. The hollow portions on both sides of the hollow portion through which the plurality of screws pass are respectively provided with the first reinforcing rod and the second reinforcing rod. The upper surface of the main body has a plurality of inclined surfaces corresponding to the number of fan blades to place the plurality of fan blades. Each of the plurality of inclined surfaces is provided with a plurality of screw holes so that the plurality of screws can be passed through them to fix the fan blades between the fan blade locking fasteners and the main body, acting as a connecting member. Therefore, the first reinforcing rod and the second reinforcing rod are not connected to the main body. When there is a gap between the first reinforcing rod and the second reinforcing rod and the hollow portion of the fan blade, noise is easily generated and the dynamic balance is affected. In addition, since a plurality of inclined surfaces need to be machined on the main body, the production cost is easily increased. Summary of the Invention

[0003] The purpose of this invention is to provide a reinforced blade connection structure for industrial ceiling fans that is simple in structure, does not easily generate noise or affect dynamic balance, and reduces production costs.

[0004] To achieve the above objectives, the present invention provides a reinforced fan blade connection structure for industrial ceiling fans, comprising fan blades, connecting components, and bolts. The hollow fan blades are connected to one end of the connecting components via bolts. One end of the connecting components is placed inside the fan blade cavity, and the other end of the connecting components is connected to a turntable. The bolts pass through the upper guard plate, the upper fan blade plate, the connecting components, the lower fan blade plate, and the lower guard plate, and are connected to nuts. Both ends of the upper guard plate are connected to both ends of the lower guard plate, forming a fish-shaped cavity that can cooperate with the fan blades. A portion of the upper fan blade plate, a portion of the lower fan blade plate, and a portion of the connecting components are placed inside the fish-shaped cavity formed by the upper and lower guard plates.

[0005] The upper guard plate is configured with a curved cross-section, and a reinforcing fold is provided along the perimeter on the outer surface of the upper guard plate.

[0006] The lower guard plate is designed as a flat plate, and a reinforcing fold is provided along the perimeter on the lower surface of the outward-facing lower guard plate.

[0007] The connecting assembly includes a connector and a rubber sleeve, with the rubber sleeve fitted onto the connector between the connector and the fan blade.

[0008] The inner hole of the rubber sleeve is set into a rectangular shape that can mate with the connector. At least two protrusions that can mate with the positioning holes of the connector are provided on the upper surface of the rectangular inner hole. The upper outer surface of the rubber sleeve is set into a curved shape that can mate with the lower surface of the upper plate of the fan blade. At least two grooves parallel to the direction from the end to the root of the fan blade are provided on the curved outer surface. The grooves can mate with the protrusions on the lower surface of the upper plate of the fan blade. The lower outer surface of the rubber sleeve is set into a planar shape that can mate with the upper surface of the lower plate of the fan blade. At least two grooves parallel to the direction from the end to the root of the fan blade are provided on the planar outer surface. The grooves can mate with the protrusions on the upper surface of the lower plate of the fan blade.

[0009] The connector is designed in a twisted shape, with at least two holes evenly distributed at both ends of the connector to facilitate the passage of bolts. The plane formed by the center lines of at least two holes on one end of the connector forms an angle of 12 to 18° with the plane formed by the center lines of at least two holes on the other end of the connector. At least two positioning holes are provided on the end of the connector away from the turntable to position the rubber sleeve, and the positioning holes are placed inside the fan blade.

[0010] With this structure, one end of the connecting assembly is placed inside the fan blade cavity, and the other end is connected to the turntable. Bolts pass through the upper guard plate, the upper fan blade plate, the connecting assembly, the lower fan blade plate, and the lower guard plate, and are connected to nuts. Both ends of the upper guard plate are connected to both ends of the lower guard plate, forming a fish-shaped cavity that can mate with the fan blade. This allows a portion of the upper fan blade plate, a portion of the lower fan blade plate, and a portion of the connecting assembly to be placed within the fish-shaped cavity formed by the upper and lower guard plates. This eliminates the need for the first and second reinforcing rods and the machining of multiple inclined surfaces on the turntable (main body), achieving a simple structure, reducing noise and dynamic balance, and lowering production costs. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0012] Appendix Figure 1 This is a three-dimensional schematic diagram of a reinforced fan blade connection structure for an industrial ceiling fan according to the present invention.

[0013] Appendix Figure 2This is a schematic front cross-sectional view of a reinforced fan blade connection structure for an industrial ceiling fan according to the present invention.

[0014] Appendix Figure 3 This is a right-side schematic diagram of a reinforced fan blade connection structure for an industrial ceiling fan according to the present invention.

[0015] Appendix Figure 4 This is an exploded three-dimensional schematic diagram of the upper and lower protective plates of the reinforced fan blade connection structure of an industrial ceiling fan according to the present invention.

[0016] Appendix Figure 5 This is a three-dimensional schematic diagram of a connecting component for a reinforced fan blade connection structure of an industrial ceiling fan according to the present invention.

[0017] Appendix Figure 6 This is a main sectional view of the connecting assembly of a reinforced fan blade connection structure for an industrial ceiling fan according to the present invention. In the diagram: 1. Fan blade 2. Bolt 3. Upper guard plate 4. Connecting assembly 5. Lower fan blade plate 6. Upper fan blade plate 7. Lower guard plate 8. Rubber sleeve 9. Connector 10. Folded edge. Detailed Implementation

[0018] Appendix Figure 1 Appendix Figure 2 The present invention discloses a reinforced fan blade connection structure for an industrial ceiling fan, comprising a fan blade 1, a connecting component 4, and bolts 2. The hollow fan blade 1 is connected to one end of the connecting component 4 via bolts 2. One end of the connecting component 4 is placed inside the cavity of the fan blade 1, and the other end of the connecting component 4 is connected to a turntable. Bolts 2 pass through the upper guard plate 3, the upper fan blade plate 6, the connecting component 4, the lower fan blade plate 5, and the lower guard plate 7 and are connected to nuts. Both ends of the upper guard plate 3 are screwed to both ends of the lower guard plate 7, forming a fish-shaped cavity that can cooperate with the fan blade 1. A portion of the upper fan blade plate 6, a portion of the lower fan blade plate 5, and a portion of the connecting component 4 are placed inside the fish-shaped cavity formed by the upper guard plate 3 and the lower guard plate 7.

[0019] Appendix Figure 3 The upper guard plate 3 is configured with a curved cross-section, and a reinforcing folded edge 10 is provided along the periphery on the outward-facing upper surface of the upper guard plate 3; the lower guard plate 7 is configured with a flat plate, and a reinforcing folded edge 10 is provided along the periphery on the outward-facing lower surface of the lower guard plate 7, and the folded edge 10 is in a continuous ring shape.

[0020] Appendix Figure 4 Appendix Figure 5 The connecting component 4 shown includes a connector 9 and a rubber sleeve 8, with the rubber sleeve 8 fitted onto the connector 9 between the connector 9 and the fan blade 1.

[0021] Appendix Figure 5The inner hole of the rubber sleeve 8 is set into a rectangular shape that can cooperate with the connector 9. At least two protrusions that can cooperate with the positioning holes 11 of the connector 9 are provided on the upper surface of the rectangular inner hole. The upper outer surface of the rubber sleeve 8 is set into a curved shape that can cooperate with the lower surface of the upper plate 6 of the fan blade. At least two grooves parallel to the direction from the end to the root of the fan blade 1 are provided on the curved outer surface. These grooves can cooperate with the protrusions on the lower surface of the upper plate 6 of the fan blade. The lower outer surface of the rubber sleeve 8 is set into a planar shape that can cooperate with the upper surface of the lower plate 5 of the fan blade. At least two grooves parallel to the direction from the end to the root of the fan blade 1 are provided on the planar outer surface. These grooves can cooperate with the protrusions on the upper surface of the lower plate 5 of the fan blade.

[0022] The connector 9 is designed in a twisted shape, with at least two holes evenly distributed at both ends of the connector 9 to facilitate the passage of the bolt 2. The plane formed by the center lines of at least two holes on one end of the connector 9 forms an angle of 8 to 12° with the plane formed by the center lines of at least two holes on the other end of the connector 9. At least two positioning holes 11 are provided on the end of the connector 9 away from the turntable to position the rubber sleeve 8, and the positioning holes 11 are placed inside the fan blade 1.

[0023] During assembly, first place one end of the connector 9 into the cavity of the fan blade 1. Then, place the upper guard plate 3 on the upper plate 6 of the fan blade, with the folded edge 10 on the upper guard plate 3 facing outwards. Place the lower guard plate 7 on the lower plate 5 of the fan blade, with the folded edge 10 on the lower guard plate 7 facing outwards. Then, connect both ends of the upper guard plate 3 to both ends of the lower guard plate 7 with screws, and place the fan blade 1 into the cavity formed by the upper guard plate 3 and the lower guard plate 7. At this time, use bolts 2 to pass through the upper guard plate 3, the upper plate 6 of the fan blade, the connector 9, the lower plate 5 of the fan blade, and the lower guard plate 7 and connect them with nuts. Finally, inject glue into the gap between the connector 9 and the upper plate 6 and the lower plate 5 of the fan blade to form a rubber sleeve 8.

Claims

1. A reinforced fan blade connection structure for industrial ceiling fans, comprising fan blades, connecting components, and bolts, wherein the hollow fan blades are connected to one end of the connecting components via bolts, characterized in that: One end of the connecting component (4) is placed inside the cavity of the fan blade (1), and the other end of the connecting component (4) is connected to the turntable. The bolt (2) passes through the upper guard plate (3), the upper plate of the fan blade (6), the connecting component (4), the lower plate of the fan blade (5), and the lower guard plate (7) and is connected to the nut. The two ends of the upper guard plate (3) are respectively connected to the two ends of the lower guard plate (7) to form a fish-shaped cavity that can cooperate with the fan blade (1), so that a part of the upper plate of the fan blade (6), a part of the lower plate of the fan blade (5), and a part of the connecting component (4) are placed inside the fish-shaped cavity formed by the upper guard plate (3) and the lower guard plate (7).

2. The reinforced blade connection structure for an industrial ceiling fan according to claim 1, characterized in that: The upper guard plate (3) is configured with a curved cross-section, and a reinforcing fold (10) is provided along the perimeter on the outer surface of the upper guard plate (3).

3. The reinforced blade connection structure for an industrial ceiling fan according to claim 1, characterized in that: The lower guard plate (7) is set in the shape of a flat plate, and a reinforced flange (10) is provided on the lower surface of the outward-facing lower guard plate (7) along the perimeter.

4. The reinforced fan blade connection structure for an industrial ceiling fan according to claim 1, characterized in that: The connecting component (4) includes a connector (9) and a rubber sleeve (8), with the rubber sleeve (8) fitted onto the connector (9) between the connector (9) and the fan blade (1).

5. The reinforced fan blade connection structure for an industrial ceiling fan according to claim 4, characterized in that: The inner hole of the rubber sleeve (8) is set into a rectangular shape that can cooperate with the connector (9). At least two protrusions that can cooperate with the positioning holes (11) of the connector (9) are provided on the upper surface of the rectangular inner hole. The upper outer surface of the rubber sleeve (8) is set into a curved shape that can cooperate with the lower surface of the upper plate (6) of the fan blade. At least two grooves parallel to the direction from the end to the root of the fan blade (1) are provided on the curved outer surface. The grooves can cooperate with the protrusions on the lower surface of the upper plate (6) of the fan blade. The lower outer surface of the rubber sleeve (8) is set into a planar shape that can cooperate with the upper surface of the lower plate (5) of the fan blade. At least two grooves parallel to the direction from the end to the root of the fan blade (1) are provided on the planar outer surface. The grooves can cooperate with the protrusions on the upper surface of the lower plate (5) of the fan blade.

6. The reinforced fan blade connection structure for an industrial ceiling fan according to claim 4, characterized in that: The connector (9) is arranged in a twisted shape, and at least two holes are evenly distributed at both ends of the connector (9) to facilitate the passage of the bolt (2). The plane formed by the center lines of at least two holes on one end of the connector (9) forms an angle of 12 to 18° with the plane formed by the center lines of at least two holes on the other end of the connector (9). At least two positioning holes (11) are provided on the end of the connector (9) away from the turntable to position the rubber sleeve (8), and the positioning holes (11) are placed inside the fan blade (1).

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