Fan blade mounting structure of ceiling fan

Abstract

The utility model relates to the technical field of ceiling fans. The fan blade mounting structure of the ceiling fan comprises a motor, an outer cover, a fixing screw and a plurality of blades, the outer cover is of an integrated structure. The motor comprises a rotor and a motor shaft; the mounting assembly comprises an inner core part and an outer sleeve part; the mounting part is provided with a notch communicated with the outside from the inner end of the mounting part, and the upper part of the notch extends in the box to form a supporting table; the inner core piece is fixedly connected with the bottom end face of the rotor. The outer sleeve piece comprises an upper positioning part and a lower supporting part, and the outer sleeve piece is arranged on the inner core piece in a sleeving mode and can rotate around the inner core piece; the inner side wall of the supporting table is attached to the upper positioning part. The supporting table is located above the lower supporting part, and the supporting table and the lower supporting part have an overlapped part when being overlooked; the fixing screw penetrates through the mounting part and is screwed into the bottom end face of the rotor. According to the utility model, the fixing screw can conveniently penetrate through the mounting part to be screwed into the bottom end face of the rotor, and the blade is mounted on the bottom end face of the rotor.

Description

Technical Field

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

[0002] In a standard ceiling fan, the blades can be installed onto the motor first, and then the motor shaft can be fixed to the ceiling wall via a bracket. This is because the motor shaft of a standard ceiling fan is relatively long, and the outer casing is relatively short, allowing the casing, which surrounds the mounting bracket, to move a considerable distance downwards along the motor shaft without interfering with the mounting bracket's installation on the ceiling wall. However, in a wall-mounted ceiling fan, the motor shaft is shorter, while the outer casing is taller. The casing can only move a small distance along the motor shaft, which would interfere with the mounting bracket's installation on the ceiling wall. Therefore, in a wall-mounted ceiling fan, the outer casing must first be fixed to the motor shaft, and the top of the motor shaft must be fixed to the ceiling wall via a bracket. The blades, on the other hand, must be installed onto the rotor before the motor shaft is mounted on the ceiling wall.

[0003] Traditional ceiling fan blades are fixed to the rotor with screws. After moving the blades to align the through holes on the blades with the threaded holes on the rotor, you need to keep the blades supported while using a screwdriver to screw the screws through the blades and into the rotor. Adjusting the blade position and installing the blades are both quite troublesome. Utility Model Content

[0004] One objective of this invention is to solve or alleviate the aforementioned technical problems.

[0005] The present invention employs a fan blade mounting structure for a ceiling fan, comprising a motor, an outer casing, fixing screws, and multiple blades; the outer casing is an integral structure; the motor includes a rotor and a motor shaft; a hanger for suspending the motor is provided at the top of the motor shaft; the outer casing is fixedly mounted on the periphery of the rotor and overlaps with the rotor in height; the motor shaft and the hanger are completely located inside the outer casing; the blades include a mounting part and an air-driven part; it also includes a mounting assembly, which includes an inner core and an outer sleeve; the mounting part has a notch communicating with the outside from its inner end, and the upper part of the notch extends into the housing to form a support platform; the inner core is fixedly connected to the bottom end face of the rotor; the outer sleeve includes an upper positioning part and a lower support part, and the outer sleeve is fitted onto the inner core and can rotate around the inner core; the inner sidewall of the support platform fits against the upper positioning part; the support platform is located above the lower support part, and when viewed from above, the support platform and the lower support part overlap; the fixing screws pass through the mounting part and are screwed into the bottom end face of the rotor.

[0006] The effect achieved by this utility model is that it can easily screw the fixing screw through the mounting part into the bottom end face of the rotor and install the blade onto the bottom end face of the rotor.

[0007] A further technical solution involves an inner core component that is a screw, with the outer sleeve abutting against the top surface of the screw head of the inner core component.

[0008] This technical solution can reduce costs.

[0009] A further technical solution is that the inner core includes a threaded section and a cylindrical section, and the outer sleeve is fitted onto the cylindrical section. When the threaded section is fully screwed into the bottom end face of the rotor, the upper positioning part is in contact with or close to the bottom end face of the rotor.

[0010] This technical solution ensures that the outer component rotates relative to the inner core, facilitating the adjustment of the mounting position.

[0011] A further technical solution involves setting an adjustment gap between the bottom surface of the support platform and the top surface of the lower support.

[0012] This technical solution makes it easier for the upper positioning part to pass through the notch; it can ensure that the blade can be rotated and its position adjusted more easily, while also ensuring the stability of the blade's attitude.

[0013] A further technical solution involves making the outer casing out of plastic.

[0014] A further technical solution is that the mounting part is fan-shaped when viewed from below, so that the mounting parts of multiple blades are spliced ​​together in sequence and appear as a ring when viewed from below.

[0015] This technical solution simplifies the structure and reduces costs.

[0016] A further technical solution is that the air-driven part includes an upward-curving part, which is higher than the top surface of the mounting part.

[0017] This technical solution, with a fixed overall height of the ceiling fan, allows for a larger tilt angle of the air-driven part, which improves the airflow effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the fan blade mounting structure of a ceiling fan according to an embodiment of the present invention. Figure 1 .

[0019] Figure 2 This is a three-dimensional exploded view of the fan blade mounting structure of a ceiling fan according to an embodiment of the present invention; only one blade 3 is shown, and the other blades 3 are not shown; the arrow ARR1 indicates the approximate direction of movement of the blade 3 mounted on the rotor 11.

[0020] Figure 3 This is a side view of the blade 3 of an embodiment of the present invention; line LINE1 represents it.

[0021] Figure 4 This is a half-sectional schematic diagram of the mounting component 4 in an embodiment of this utility model.

[0022] Figure 5This is a three-dimensional schematic diagram of the fan blade mounting structure of a ceiling fan according to an embodiment of the present invention. Figure 2 Only one leaf 3 is drawn; the other leaves 3 are not drawn.

[0023] Figure 6 This is a partially enlarged schematic diagram of section SEC1; outer cover 2 is not shown.

[0024] The accompanying drawings in the specification that best illustrate the technical features of this utility model are: Figure 2 .

[0025] Arrow 1 ARR1; Section 1 SEC1; Line 1 LINE1; Motor 1; Rotor 11; Motor housing protrusion 119; Motor shaft 12; Outer cover 2; Blade 3; Mounting part 31; Notch 311; Support platform 312; Side contact surface 313; Fixing screw hole 319; Air propulsion part 32; Upward tilting part 321; Mounting assembly 4; Inner core 41; Threaded section 411; Cylindrical section 412; Screw head 419; Outer sleeve 42; Upper positioning part 421; Lower support part 422; Adjustment gap 423; Fixing screw 9. Detailed Implementation

[0026] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0027] As a specific embodiment, the fan blade mounting structure of the ceiling fan of this utility model includes a motor 1, an outer cover 2, fixing screws 9, and multiple blades 3.

[0028] The outer cover 2 is a one-piece structure. Typically, the outer cover 2 is injection molded and is a one-piece structure with cylindrical side walls. The middle part of the cylindrical side walls extends into the box to form an annular inner end wall (not shown in the attached figure).

[0029] The motor 1 includes a rotor 11 and a motor shaft 12.

[0030] The top end of the motor shaft 12 is provided with a hanger (not shown in the attached figure) for suspending the motor 1. The outer cover 2 is fixedly installed on the periphery of the rotor 11 and overlaps with the rotor 11 in height. The motor shaft 12 and the hanger are completely located inside the outer cover 2.

[0031] As a prior art, the motor 1 is suspended from the ceiling or other locations using the aforementioned bracket (the bracket needs to be disassembled first, and the annular inner wall of the outer cover 2, with its circular cross-section, is fitted onto the motor shaft 12 so that it abuts against the motor shaft 12; the annular inner wall of the outer cover 2 is fixed to the motor shaft 12 by friction). The bottom of the outer cover 2 extends downwards to approximately flush with the bottom surface of the rotor 11. At this time, only the outer cover 2 is visible, while the motor shaft 12 and the bracket are concealed by the outer cover 2, creating a ceiling-mounted visual effect and reducing the overall height of the ceiling fan, thus saving space. However, as described in the background section, while this prior art achieves the desired technical effect, it also presents installation difficulties.

[0032] The blade 3 includes a mounting part 31 and an air-driven part 32. It is easy to understand that the mounting part 31 is used to fix the blade 3 to the rotor 11, and the air-driven part 32 has an inclined surface that can drive air. The blade 3 drives the air to form a blowing air as the rotor 11 rotates.

[0033] The fan blade mounting structure of the ceiling fan in the embodiment of this utility model further includes a mounting component 4, which includes an inner core 41 and an outer sleeve 42.

[0034] The mounting part 31 is provided with a notch 311 that connects to the outside from its inner end (the direction towards the center of the annular fan-shaped part 31 is the inside of the box), and a support platform 312 extends from the upper part of the notch 311 into the box.

[0035] The inner core 41 is fixedly connected to the bottom end face of the rotor 11.

[0036] The outer sleeve 42 includes an upper positioning part 421 and a lower support part 422. The outer sleeve 42 is fitted onto the inner core 41 and can rotate around the inner core 41.

[0037] The inner wall of the support platform 312 fits against the upper positioning part 421; the support platform 312 is located above the lower support part 422, and when viewed from above, the support platform 312 and the lower support part 422 overlap.

[0038] The fixing screw 9 passes through the mounting part 31 and is screwed into the bottom end face of the rotor 11. It is easy to understand that the mounting part 31 has a through hole (i.e., fixing screw hole 319) for the fixing screw 9 to pass through, and the bottom end face of the rotor 11 has a threaded hole for the fixing screw 9 to be screwed into (not shown in the figure).

[0039] As mentioned earlier, with the motor shaft 12 and the outer casing 2 fixed to the ceiling or other surfaces of the room, only the bottom surface of the rotor 11 is exposed. Figure 2As shown, the blade 3 is moved towards the motor shaft 12 by hand, so that the upper positioning part 421 passes through the notch 311 until it is in contact with the inner wall of the support platform 312. Then the blade 3 is released. At this time, the top surface of the mounting part 31 at least partially abuts against the bottom surface of the rotor 11, and the bottom surface of the support platform 312 at least partially abuts against the top surface of the lower support part 422, so that the blade 3 is held on the mounting assembly 4 and will not fall off the rotor 11. The blade 3 can rotate with the outer sleeve 42 until the mounting part 31... The through hole (i.e., the fixing screw hole 319) is aligned with the threaded hole on the bottom end face of the rotor 11 (not shown in the attached figure; this threaded hole is usually inside the motor housing protrusion 119 on the rotor 11). At this time, the fixing screw 9 can be easily screwed into the bottom end face of the rotor 11 through the mounting part 31 and the blade 3 can be installed on the bottom end face of the rotor 11 without having to lift the blade 3 with one hand while moving the blade 3 to align the through hole of the mounting part 31 with the threaded hole on the bottom end face of the rotor 11. The installation of the blade 3 can be completed even with one hand.

[0040] As one specific implementation, the inner core 41 is a screw, and the outer sleeve 42 abuts against the top surface of the screw head 419 of the inner core 41. This can reduce costs.

[0041] As one specific implementation, the inner core 41 includes a threaded section 411 and a cylindrical section 412. The outer sleeve 42 is fitted onto the cylindrical section 412. When the threaded section 411 is fully screwed into the bottom end face of the rotor 11, the upper positioning part 421 is in contact with or close to the bottom end face of the rotor 11. This ensures that the outer sleeve 42 can rotate relative to the inner core 41, facilitating the adjustment of the position of the mounting part 31.

[0042] As one specific implementation, an adjustment gap 423 is provided between the bottom end face of the support platform 312 and the top end face of the lower support portion 422. When the blade 3 is moved toward the motor shaft 12, the support platform 312 does not abut against the lower support portion 422, making it easier for the upper positioning portion 421 to pass through the notch 311 until it fits against the inner wall of the support platform 312. In addition, after the blade 3 is released, the air-driven portion 32 falls due to its own weight, causing the mounting portion 31 to tilt upwards. This results in the inner end of the mounting portion 31 abutting against the bottom end face of the rotor 11 with a small contact area, ensuring that the blade 3 can be rotated and its position adjusted more easily while ensuring the stability of the blade 3's posture. It is easy to understand that the smaller size of the adjustment gap 423 results in a smaller tilt angle of the blade 3. Therefore, the tilt of the blade 3 has less impact on the alignment of the through hole of the mounting portion 31 with the threaded hole on the bottom end face of the rotor 11.

[0043] As one specific implementation method, the outer casing 42 is made of plastic.

[0044] As one specific implementation, the mounting part 31 is fan-shaped when viewed from below, so that the mounting parts 31 of multiple blades 3 are spliced ​​together in sequence and form a ring when viewed from below; it is easy to understand that the side contact surfaces 313 of two adjacent blades 3 are in contact with each other. The side of the rotor 11 is basically surrounded by the outer cover 2, and the bottom surface of the rotor 11 is blocked by the mounting part 31. Therefore, the rotor 11 does not need to be provided with a separate protective cover, which simplifies the structure and reduces costs.

[0045] As one specific implementation, the air-driven unit 32 includes an upward-curving portion 321, which is higher than the top surface of the mounting portion 31. With a fixed overall height for the ceiling fan, the air-driven unit 32 has a larger tilt angle, which improves the airflow effect.

[0046] The terms used in this invention, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are merely for distinction.

[0047] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0048] In this utility model, terms indicating direction or location such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, and below are used to indicate relative positions rather than absolute positions.

[0049] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that are present but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context; for example, regarding dimensional deviations, the specific context may include, but is not limited to, relevant standards for dimensional tolerances.

Claims

1. A fan blade mounting structure for a ceiling fan, comprising a motor (1), an outer cover (2), fixing screws (9), and multiple blades (3); the outer cover (2) is an integral structure; the motor (1) comprises a rotor (11) and a motor shaft (12); a hanger for suspending the motor (1) is provided at the top of the motor shaft (12); the outer cover (2) is fixedly installed on the periphery of the rotor (11) and overlaps with the rotor (11) in height; the motor shaft (12) and the hanger are completely located inside the outer cover (2); the blades (3) include a mounting part (31) and an air-driven part (32); Its characteristics are, It also includes an installation component (4), which includes an inner core (41) and an outer sleeve (42); the installation part (31) is provided with a notch (311) that communicates with the outside from its inner end, and the upper part of the notch (311) extends into the box to form a support platform (312); the inner core (41) is fixedly connected to the bottom end face of the rotor (11); the outer sleeve (42) includes an upper positioning part (421) and a lower support part (422), and the outer sleeve (42) is fitted on the inner core (41) and can rotate around the inner core (41); the inner side wall of the support platform (312) fits against the upper positioning part (421); the support platform (312) is located above the lower support part (422), and when viewed from above, the support platform (312) and the lower support part (422) have an overlapping part; the fixing screw (9) passes through the installation part (31) and is screwed into the bottom end face of the rotor (11).

2. The fan blade mounting structure of the ceiling fan according to claim 1, characterized in that, The inner core (41) is a screw, and the outer sleeve (42) abuts against the top surface of the screw head (419) of the inner core (41).

3. The fan blade mounting structure of the ceiling fan according to claim 2, characterized in that, The inner core (41) includes a threaded section (411) and a cylindrical section (412). The outer sleeve (42) is fitted onto the cylindrical section (412). When the threaded section (411) is fully screwed into the bottom end face of the rotor (11), the upper positioning part (421) is in contact with or close to the bottom end face of the rotor (11).

4. The fan blade mounting structure of the ceiling fan according to claim 1, characterized in that, An adjustment gap (423) is provided between the bottom end face of the support platform (312) and the top end face of the lower support part (422).

5. The fan blade mounting structure of the ceiling fan according to claim 2, characterized in that, The outer casing (42) is made of plastic.

6. The fan blade mounting structure of the ceiling fan according to claim 1, characterized in that, When viewed from below, the mounting part (31) is fan-shaped, so that when the mounting parts (31) of multiple blades (3) are spliced ​​together in sequence, they are circular when viewed from below.

7. The fan blade mounting structure of the ceiling fan according to claim 1, characterized in that, The air-driven part (32) includes an upturned part (321) which is higher than the top surface of the mounting part (31).

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