WO2022036808A1

WO2022036808A1 - Direct-current ceiling fan which is convenient to install and has stable installation

Info

Publication number: WO2022036808A1
Application number: PCT/CN2020/117982
Authority: WO
Inventors: 朱鹏晖; 胡伟军; 陈燕平
Original assignee: 东莞市绿雅家用电器有限公司
Priority date: 2020-08-21
Filing date: 2020-09-27
Publication date: 2022-02-24
Also published as: CN111852920A

Abstract

A direct-current ceiling fan which is convenient to install and has stable installation, the direct-current ceiling fan comprising a ceiling-hung base (10) and a fan assembly arranged at a lower portion of the ceiling-hung base (10). The fan assembly comprises an installation seat (20), a PCB (30), an electric motor (40) and fan blades (50). The installation seat (20) comprises a main body portion (21), and a first installation portion (22) integrally extending outwards from the periphery of an outer side of the main body portion (21), wherein a second installation concave position (202) is arranged on an upper surface of the first installation portion (22) in a recessed manner, and the second installation concave position (202) is of a limiting structure with a small outer end and a large inner end. A direct-current circuit is arranged on the PCB (30). A second installation portion (52) of each fan blade (50) is provided with a snap-fitting table (521) which is arranged in a downwardly-protruding manner, and the snap-fitting table (521) is snap-fitted in the second installation concave position (202), and same is positioned therein. The ceiling fan is convenient to assemble, and a direct-current circuit is used to replace an alternating-current circuit, such that the service life thereof is prolonged.

Description

Easy-to-install and robust DC ceiling fans

technical field

The invention relates to the technology in the field of ceiling fans, in particular to a DC ceiling fan that is easy to install and stably installed.

Background technique

When installing the fan blade of a traditional ceiling fan, first place the fan blade on the fan blade fixing plate, and then use a cover plate to lay it on the surface of the fan blade, and finally use screws to lock the three together. It is more troublesome to assemble, and workers need to The screws can only be locked after manually aligning the three holes, and in order to ensure the stability of the installation, at least 6 screws are required for locking, which increases the cost. In addition, there is no foolproof structure between the fan blade and the fan blade fixing plate, so that the fan blade is easy to be installed backwards, and the stability of the installation is still lacking.

And traditional ceiling fans are driven by AC circuits. The AC circuit will generate relatively more thermal energy, and the relative mechanical energy will be reduced. The mechanical energy use efficiency is not high, which will affect the service life; at the same time, noise will be generated. Correspondingly, the AC circuit needs to coordinate with multiple gears for speed regulation, and stepless speed regulation cannot be performed.

SUMMARY OF THE INVENTION

In view of this, the present invention is aimed at the deficiencies in the prior art, and its main purpose is to provide a DC ceiling fan that is easy to install and stably installed, which effectively solves the problem that the existing ceiling fans are cumbersome to assemble, high cost, easy to install and reverse. The stability of the installation is still lacking; and the problems caused by the use of AC circuit driving, which will affect the service life, produce noise and cannot be adjusted steplessly.

To achieve the above object, the present invention adopts the following technical scheme:

A DC ceiling fan that is easy to install and stably installed is characterized in that: it includes a hoisting seat and a fan assembly arranged at the lower part of the hoisting seat; the fan assembly includes a mounting seat, a PCB board, a motor and a plurality of fan blades;

The mounting seat includes a main body portion and a plurality of first mounting portions integrally extending outward from the outer peripheral edge of the main body portion; a first mounting recess for installing the rotor in the motor is recessed in the middle position of the upper surface of the main body portion; An annular mounting platform for positioning the stator in the motor extends upward from the peripheral edge, and the annular mounting platform is concentric with the first mounting recess; a plurality of first mounting portions are arranged at intervals on the outer peripheral edge of the main body portion, and each first mounting portion The upper surface of the part is recessed with a second installation recess for installing the fan blade, and the second installation recess is a limiting structure with a small outer end and a large inner end; and an installation space is formed between two adjacent first installation parts. ; The PCB board is arranged on the motor, and the PCB board has a DC circuit, the DC circuit includes a main control chip module, a sliding adjustment circuit module, a drive gate module, a sampling resistance module and an output motor module; the sliding adjustment circuit module The input The output end of the sliding adjustment circuit module is connected with the main control chip module, the input end of the drive gate module is connected with the main control chip module; the sampling resistance module is connected with the drive gate module and the main control chip module; the input end of the output motor module is connected with the output end of the drive gate module;

The motor includes a stator and a rotor, the stator is arranged on the annular mounting platform, and the stator is electrically connected to the output end of the output motor module; the rotor is installed in cooperation with the stator, and the rotor is arranged in the first installation recess;

Each fan blade includes a blade portion and a second mounting portion extending radially from the inner end of the blade portion. The lower surface of the second mounting portion is recessed to form an escape position, and the second mounting portion has a downwardly protruding and extending portion. The buckle platform is adapted to the above-mentioned second installation recess, the buckle platform extends into the avoidance position, and the buckle platform is buckled and positioned in the above-mentioned second installation recess from top to bottom; and each second installation portion is in the shape of a circular arc and the outer side of the second mounting portion is a contact surface, the corresponding contact surfaces in the adjacent second mounting portions respectively protrude into the corresponding mounting spaces to collide with each other, and the contact surfaces on the plurality of second mounting portions are in contact with each other A closed-loop structure is formed together; and the inner wall of the second mounting portion abuts on the outer peripheral side surface of the main body portion.

As a preferred solution, the rotor is installed in the first installation recess through a bearing, the bearing is embedded in the above-mentioned first installation recess, and the upper end opening periphery of the first installation recess extends upward as a whole for the limit The annular step of the bearing.

As a preferred solution, a plurality of reinforcing ribs are protruded from the connection between the second installation portion and the blade portion.

As a preferred solution, the thickness of the second mounting portion is greater than the thickness of the blade portion.

As a preferred solution, the inner edge of the second installation portion is protruded upward with a pick, and the side of the pick close to the main body is protruded with a blocking block. Correspondingly, the circumferential side of the main body is concave with a snap. hole, and the above-mentioned clamping block is clamped and fixed on the clamping hole.

As a preferred solution, a positioning groove is concavely formed on the lower surface of the buckle platform. Correspondingly, a positioning post is protruded on the mounting recess, and the positioning post is inserted into the positioning groove for positioning.

As a preferred solution, the positioning groove is provided with a through hole, and correspondingly, the positioning column is provided with a concave screw hole, and the screw passes through the through hole and is threadedly connected with the screw hole.

As a preferred solution, the motor cover is provided with a protective cover, and the bottom surface of the protective cover has a skirt extending outward. Correspondingly, the first installation part has a boss for the protective cover, and the boss is located at the bottom of the protective cover. At the connection between the first installation part and the main body, the skirt is abutted on the boss and locked on the boss by screws.

As a preferred solution, the protective cover is provided with an outer cover, and the outer cover is provided with heat dissipation holes.

As a preferred solution, the bottom surface of the mounting seat is provided with a decorative light, the bottom surface of the corresponding mounting seat is recessed with a third mounting recess, the upper shell of the decorative light is inserted into the third mounting recess to be fixed, and the above-mentioned card The hole communicates directly with the third mounting recess and the second mounting recess.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

1. The radial expansion structure increases the contact area between the second mounting portion and the mounting seat by radially expanding the second mounting portion at the inner end of the blade portion, so that the force-bearing area is larger and the contact is more stable, and The buckle platform on the second installation part is buckled and positioned with the installation recess on the installation seat, which plays a guiding role and a positioning role, and is more convenient to assemble. opposite. And the contact surfaces on the plurality of second installation parts abut each other to form a closed-loop structure, so that the plurality of fan blades exert force on each other, so that the installation of the plurality of fan blades is more stable; The inner wall abuts on the outer peripheral side surface of the main body portion, so as to further enhance the installation stability of the fan blade. And the use of DC circuit to replace the AC circuit, the heat energy generated when the ceiling fan is working is reduced, the relative mechanical energy utilization rate is greatly improved, thereby improving the service life; at the same time, the noise will be greatly reduced; when used with the stepless speed control knob, it replaces the traditional gear. Adjust the wind speed, so that the wind speed can be adjusted at will, the use is more flexible, and the consumer's sense of use is improved.

2. Fixing the fan blade and the mounting seat together by the snap block and the card hole, and fixing the fan blade and the mounting seat together with screws, so that the connection stability of the mounting seat and the fan blade is greatly enhanced.

In order to illustrate the structural features and effects of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Description of drawings

1 is an assembled perspective view of a preferred embodiment of the present invention;

Figure 2 is an exploded view of a preferred embodiment of the present invention;

3 is a cross-sectional view of a preferred embodiment of the present invention;

4 is an assembled perspective view of the mounting seat and the fan blade in the preferred embodiment of the present invention;

Fig. 5 is the partial enlarged view of A place in Fig. 4;

Fig. 6 is another perspective assembled perspective view of the mounting seat and the fan blade in the preferred embodiment of the present invention;

7 is a partial cross-sectional view of a preferred embodiment of the present invention;

Fig. 8 is a partial enlarged view at B in Fig. 7;

Figure 9 is a partial exploded view of the preferred embodiment of the present invention;

10 is a perspective view of a fan blade in a preferred embodiment of the present invention;

Figure 11 is another perspective view of the fan blade in the preferred embodiment of the present invention;

Figure 12 is a perspective view of the mounting seat in the preferred embodiment of the present invention;

13 is a schematic structural diagram of a DC circuit in a preferred embodiment of the present invention.

Description of drawings:

10. Lifting seat

20. Mounting seat 21. Main body

22. The first installation part 23. Ring installation platform

24. Circular steps 25. Positioning column

26. Boss 201. The first installation recess

202. Second installation recess 203. Installation space

204, card hole 205, screw hole

206. Third installation recess 30. PCB board

31. Main control chip module 32. Slide adjustment circuit module

33. Drive gate module 34. Sampling resistor module

35. Output motor module 40. Motor

41. Stator 42. Rotor

43. Bearing 50. Fan blade

51. Blade part 52. Second installation part

521, buckle table 522, conflict surface

501, give way 502, positioning slot

503, through hole 53, stiffener

54, pick 541, card block

542, stiffener 60, screw

70, protective cover 80, outer cover

90. Decorative lights 91. Upper shell.

detailed description

Please refer to FIG. 1 to FIG. 13, which show the specific structure of the preferred embodiment of the present invention, including a hoisting seat 10 and a fan assembly arranged at the lower part of the hoisting seat; the fan assembly includes a mounting seat 20, a PCB board 30 , a motor 40 and a plurality of fan blades 50 .

The mounting seat 20 includes a main body portion 21 and a plurality of first mounting portions 22 integrally extending outward from the outer peripheral edge of the main body portion 21 . A first mounting recess 201 for mounting the rotor in the motor is recessed in the center of the upper surface of the main body portion 21 . An annular mounting table 23 for positioning the stator in the motor extends upward from the peripheral edge of the main body portion 21 , and the annular mounting table 23 is concentric with the first mounting recess 201 , and the two ensure concentricity, thereby facilitating the assembly process. Installation and positioning of the rotor and stator of the motor. A second mounting recess 202 is recessed on the upper surface of each of the first mounting portions 12 , and the second mounting recess 202 is a limiting structure with a large inner end and a small outer end. An installation space 203 is formed between two adjacent first installation portions 22 .

The PCB board 30 is disposed on the motor 40 , and has a DC circuit on the PCB board 30 . The input end of the sliding adjustment circuit module 32 is electrically connected with its matching speed control knob, and the speed control knob is the stepless speed control knob, which replaces the traditional gear knob, and the speed can be adjusted at will; the output end of the sliding adjustment circuit module 32 is connected to the stepless speed control knob. The main control chip module 31 is connected, and the working principle of the sliding adjustment circuit module 32 is to detect the speed change by changing the voltage input by the spd port, and the method used is the voltage dividing circuit. The input end of the drive gate module 33 is connected with the main control chip module 31, and the drive gate module 33 is fitted into a string-like waveform through the gate switch, and performs three-phase-like AC transformation. The sampling resistor module 34 is connected between the drive gate module 33 and the main control chip module 31, and the sampling resistor module 34 performs current limit detection by detecting the voltage across the sampling resistor. The input end of the output motor module 35 is connected to the output end of the drive gate module 33 . By using a DC circuit to replace the traditional AC circuit, the power used is halved, the cost is reduced, and the generation of thermal energy is reduced, the utilization rate of mechanical energy is greatly improved, and the generation of noise is reduced.

The motor 40 includes a stator 41 and a rotor 42 , the stator 41 is disposed on the annular mounting table 23 , and the stator 41 is electrically connected to the output end of the output motor module 35 . The rotor 42 is installed in cooperation with the stator 41, and the rotor 42 is installed in the first installation recess 201. Specifically, the rotor 42 is installed in the first installation recess 201 through the bearing 43, and the bearing 43 is embedded in the first installation. In the concave position 201 , an annular step 24 for limiting the bearing is integrally extended upward from the periphery of the upper end opening of the first installation concave position 201 .

Each fan blade 50 includes a blade portion 51 and a second mounting portion 52 extending radially from the inner end of the blade portion. The radially enlarged structure increases the contact area between the second mounting portion 52 and the mounting seat 10, so that the The force bearing area is larger and the contact is more stable. An escape position 501 is formed concavely on the lower surface of the second installation portion 52 , and the second installation portion 52 has a buckle base 521 protruding downward and adapted to the second installation concave position 202 . The buckle base 521 extends into the avoidance position. 501, and the buckle platform 521 is positioned in the second installation recess 202 from top to bottom. After being buckled in the second installation recess 202, a front and rear limit is formed. The buckle table 521 is placed in the second installation recess 202 to achieve the positioning function, so it is very convenient to assemble. At the same time, the buckle table 521 and the second installation In the installation structure of the recess 201 , the upper surface of the second installation portion 52 cannot be installed in cooperation with the second installation recess 202 , so as to prevent fools and avoid the problem of reverse installation of the front and back of the traditional fan blade 50 .

And each of the second mounting portions 52 is in the shape of a circular arc, and the outer side surface of the second mounting portion 52 is a contact surface 522 , and the corresponding contact surfaces 522 in the adjacent second mounting portions 52 respectively protrude into the corresponding mounting spaces 203 to interfere with each other. Together, the contact surfaces 522 on the plurality of second mounting portions 52 abut each other to form a closed-loop structure. In this embodiment, there are three fan blades 50 , and the second mounting portions 52 of the three fan blades 50 are all In an arc shape of 120 degrees, the contact surfaces 522 of the second mounting portions 52 of the three fan blades 50 abut against each other to form a closed-loop structure, so that the plurality of fan blades 50 exert force on each other, that is, a plurality of fan blades 50 The installation of the leaves is more stable. In addition, the inner wall of the second installation portion 52 abuts on the outer peripheral side surface of the main body portion 21 , thereby further enhancing the installation stability of the fan blade 50 .

A plurality of reinforcing ribs 53 are protruded from the connection between the second mounting portion 52 and the blade portion 51 to enhance the structural strength of the connection between the two. Moreover, the thickness of the second mounting portion 52 is greater than the thickness of the blade portion 51, which enhances the structural strength of the second mounting portion.

A paddle 54 is protruded upward from the inner edge of the second mounting portion 52 , and a locking block 541 is protruded on the side of the paddle 54 close to the main body portion 21 . Correspondingly, a locking hole 204 is recessed on the circumferential side of the main body portion 21 . , the above-mentioned blocking block 541 is fixed on the blocking hole 204, and the blocking block 541 is fixed with the blocking hole 204, which effectively makes the fan blade 50 and the mounting seat 20 form an upper and lower limit position, so that the second mounting part 52 is better fixed on the first Two are installed in the recess 202 . A reinforcing rib 542 is protruded on the side of the pick piece 54 away from the main body to prevent the pick piece from breaking, and the reinforcing rib 542 is connected between the pick piece 54 and the second mounting portion 52 .

A positioning groove 502 is concavely formed on the lower surface of the above-mentioned buckle platform 521. Correspondingly, a positioning post 25 is protruded on the above-mentioned second installation concave position 202. The positioning post 25 is inserted into the positioning groove 502 for positioning, and the positioning groove 502 penetrates through it. There are through holes 503 . Correspondingly, the positioning posts 25 are recessed with screw holes 205 . The screws 60 pass through the through holes 503 and are threadedly connected with the screw holes 205 , thereby completely fixing the fan blade 50 on the mounting seat 20 .

The outer cover of the motor 40 is provided with a protective cover 70, and a skirt 71 extends outward from the periphery of the bottom surface of the protective cover 70. Correspondingly, the first mounting portion 22 has a boss 26 for the protective cover, and the boss 26 is located at At the connection between the first mounting portion 22 and the main body portion 21 , the skirt 71 abuts on the boss 26 and is locked on the boss 26 by screws. The protective cover 70 is provided with an outer cover 80 , and the outer cover 80 is provided with a heat dissipation hole 801 . The bottom surface of the mounting seat 20 is provided with a decorative lamp 90 , the bottom surface of the corresponding mounting seat 20 is recessed with a third mounting recess 206 , and the upper shell 91 of the decorative lamp 90 is inserted into the third mounting recess 206 to be fixed, and the above-mentioned The clamping hole 204 communicates between the third mounting recess 206 and the second mounting recess 202 .

When the fan blades 50 are assembled, the buckle platforms 521 on the plurality of fan blades 50 are buckled in the corresponding second installation recesses 202, and the clamping blocks 541 are buckled and fixed with the clamping holes 204, and the positioning posts 53 are inserted into the positioning grooves 502. And the contact surfaces 522 on the plurality of fan blades 50 are in contact with each other, and finally the fan blades 50 are locked on the mounting seat 20 with screws 60, and the assembly is completed.

The key points of the design of the present invention are: firstly, by radially expanding the second mounting portion at the inner end of the blade portion, the radially expanding structure increases the contact area between the second mounting portion and the mounting seat, so that the force-bearing area is larger , the contact is more stable, and the buckle platform on the second installation part is buckled and positioned with the installation recess on the installation seat, which plays a guiding and positioning role, and is more convenient to assemble. At the same time, the matching structure of the two plays a foolproof role function, to avoid group reverse during assembly. And the contact surfaces on the plurality of second installation parts abut each other to form a closed-loop structure, so that the plurality of fan blades exert force on each other, so that the installation of the plurality of fan blades is more stable; The inner wall abuts on the outer peripheral side surface of the main body portion, so as to further enhance the installation stability of the fan blade. And the use of DC circuit to replace the AC circuit, the heat energy generated when the ceiling fan is working is reduced, the relative mechanical energy utilization rate is greatly improved, thereby improving the service life; at the same time, the noise will be greatly reduced; when used with the stepless speed control knob, it replaces the traditional gear. Adjust the wind speed, so that the wind speed can be adjusted at will, the use is more flexible, and the consumer's sense of use is improved. Secondly, the connection stability of the mounting seat and the fan blade is greatly enhanced by fixing the clip between the card block and the card hole, and fixing the fan blade and the mounting seat together with screws.

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still It belongs to the scope of the technical solution of the present invention.

Claims

A DC ceiling fan that is easy to install and stably installed is characterized in that: it includes a hoisting seat and a fan assembly arranged at the lower part of the hoisting seat; the fan assembly includes a mounting seat, a PCB board, a motor and a plurality of fan blades;

The mounting seat includes a main body portion and a plurality of first mounting portions integrally extending outward from the outer peripheral edge of the main body portion; a first mounting recess for installing the rotor in the motor is recessed in the middle position of the upper surface of the main body portion; An annular mounting platform for positioning the stator in the motor extends upward from the peripheral edge, and the annular mounting platform is concentric with the first mounting recess; a plurality of first mounting portions are arranged at intervals on the outer peripheral edge of the main body portion, and each first mounting portion The upper surface of the part is recessed with a second installation recess for installing the fan blade, and the second installation recess is a limiting structure with a small outer end and a large inner end; and an installation space is formed between two adjacent first installation parts. ; The PCB board is arranged on the motor, and the PCB board has a DC circuit, the DC circuit includes a main control chip module, a sliding adjustment circuit module, a drive gate module, a sampling resistance module and an output motor module; the sliding adjustment circuit module The input The output end of the sliding adjustment circuit module is connected with the main control chip module, the input end of the drive gate module is connected with the main control chip module; the sampling resistance module is connected with the drive gate module and the main control chip module; the input end of the output motor module is connected with the output end of the drive gate module;

The motor includes a stator and a rotor, the stator is arranged on the annular mounting platform, and the stator is electrically connected to the output end of the output motor module; the rotor is installed in cooperation with the stator, and the rotor is arranged in the first installation recess;

Each fan blade includes a blade portion and a second mounting portion extending radially from the inner end of the blade portion. The lower surface of the second mounting portion is recessed to form an escape position, and the second mounting portion has a downwardly protruding and extending portion. The buckle platform is adapted to the above-mentioned second installation recess, the buckle platform extends into the avoidance position, and the buckle platform is buckled and positioned in the above-mentioned second installation recess from top to bottom; and each second installation portion is in the shape of a circular arc and the outer side of the second mounting portion is a contact surface, the corresponding contact surfaces in the adjacent second mounting portions respectively protrude into the corresponding mounting spaces to collide with each other, and the contact surfaces on the plurality of second mounting portions are in contact with each other A closed-loop structure is formed together; and the inner wall of the second mounting portion abuts on the outer peripheral side surface of the main body portion.
The DC ceiling fan with easy installation and stable installation according to claim 1, wherein the rotor is installed in the first installation recess through a bearing, the bearing is embedded in the first installation recess, and is installed in the first installation recess. An annular step for limiting the bearing is integrally extended upward from the periphery of the upper end opening of the recess.
The DC ceiling fan that is easy to install and stably installed according to claim 1, wherein a plurality of reinforcing ribs are protruded from the connection between the second installation portion and the blade portion.
The DC ceiling fan for easy installation and stable installation according to claim 1, wherein the thickness of the second installation portion is greater than the thickness of the blade portion.
The DC ceiling fan that is easy to install and stably installed according to claim 1, characterized in that: the inner edge of the second installation part is protruded upward with a pick, and the side of the pick close to the main body part is protruded with a locking block , Correspondingly, the circumferential side surface of the main body is concavely provided with a locking hole, and the above-mentioned locking block is fixed on the locking hole.
The DC ceiling fan that is easy to install and stably installed according to claim 1 is characterized in that: a positioning groove is concavely formed on the lower surface of the buckle platform, and correspondingly, a positioning post is convexly arranged on the installation concave position, and the positioning The post is inserted into the positioning slot for positioning.
The DC ceiling fan that is easy to install and stably installed according to claim 6, characterized in that: through holes are formed through the positioning grooves, correspondingly, screw holes are recessed in the positioning posts, and the screws pass through the through holes and connect with the holes. Screw hole screw connection.
The DC ceiling fan according to claim 1, characterized in that: the motor cover is provided with a protective cover, and a skirt extends outward from the periphery of the bottom surface of the protective cover. Correspondingly, the above-mentioned first installation The part is provided with a boss for protecting the cover, the boss is located at the connection between the first installation part and the main body part, the skirt is abutted on the boss and locked on the boss by screws.
The DC ceiling fan that is easy to install and stably installed according to claim 8, wherein the protective cover is provided with an outer cover, and the outer cover is provided with heat dissipation holes.
The DC ceiling fan that is easy to install and stably installed according to claim 5 is characterized in that: the bottom surface of the mounting seat is provided with a decorative light, the bottom surface of the corresponding mounting seat is recessed with a third mounting recess, and the upper surface of the decorative light is provided with a third mounting recess. The shell extends into the third installation recess for fixing, and the above-mentioned locking hole communicates between the third installation recess and the second installation recess.