CN114552861A

CN114552861A - Direct current motor driven fan blade assembly and fan

Info

Publication number: CN114552861A
Application number: CN202111631411.7A
Authority: CN
Inventors: 魏世忠; 刘小武; 张耀杰
Original assignee: Zhuyou Industrial Technology Ningbo Co ltd
Current assignee: Zhuyou Industrial Technology Ningbo Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-27

Abstract

The application relates to a fan blade assembly driven by a direct current motor and a fan. The fan blade assembly comprises a fixing head, a fan blade, a motor shaft, an outer cover body, a magnetic ring, a stator winding and a motor fixing plate, wherein the stator winding is arranged on the motor fixing plate, one end of the motor shaft penetrates out of the fan blade and is fixed by the fixing head, the other end of the motor shaft penetrates through the outer cover body, the motor shaft and the outer cover body are fixedly arranged, the magnetic ring is arranged in the outer cover body, the stator winding is arranged in the magnetic ring, and a bearing is arranged between the stator winding and the motor shaft. The device has the technical advantages of simple structure, convenience in manufacturing, mounting and maintaining and low cost.

Description

Direct current motor driven fan blade assembly and fan

Technical Field

The application relates to a direct current motor driven fan blade assembly and a fan, which are applicable to the technical field of air conditioning equipment.

Background

The prior art air conditioning devices may be driven by dc motors or ac motors, respectively. Taking a fan as an example, in a fan driven by a direct current motor, blades of the direct current motor are usually directly fixed on a motor housing, and the blades are designed separately according to the shape of the motor housing, so that the universality is poor, and the maintenance or replacement is inconvenient.

Chinese patent application 200910193689.3 discloses a fan of a dc brushless motor, which includes fan blades and a dc brushless motor, wherein the fan blades are connected to a power output shaft of the dc brushless motor, a stator core and a stator winding are respectively disposed outside a shaft body connecting sleeve, the stator winding is disposed around the stator core, a magnetic ring is disposed outside the stator winding, and a magnetic cover is sleeved outside the magnetic ring; the stator core, the stator winding, the magnetic ring and the magnetic shield are sequentially disposed in the motor housing with respect to the motor shaft. The brushless DC motor comprises a motor shell, wherein a motor cover plate is connected to one side of the motor shell, and a shell connecting plate is connected to the other side of the motor shell. The motor shaft is rotatably inserted between the motor cover plate and the shell connecting plate, one end of the motor shaft is pivoted in the riveting head, and the other end of the motor shaft is rotatably connected in the motor shell by virtue of the first connecting bearing and the second connecting bearing. The structure of the motor in the patent is very complicated, so that the manufacturing cost and the installation cost are high; moreover, motor casing, motor apron and casing connecting plate in this patent are all fixed, in order to guarantee that magnetic ring and magnetic shield are rotatory, need carry out other auxiliary structure designs to lead to direct current motor's overall structure more complicated.

Therefore, there is a need in the art for a fan blade assembly and a fan driven by a dc motor, which have simple structure, more convenient manufacture, installation and maintenance, and lower cost.

Disclosure of Invention

The utility model aims at providing a direct current motor driven fan blade subassembly and fan, it has simple structure, makes, installation and easy maintenance, with low costs technical advantage.

The utility model relates to a direct current motor driven fan blade subassembly, including fixed head, fan blade, motor shaft, the outer cover body, magnetic ring, stator winding and motor fixed plate, the stator winding sets up on the motor fixed plate, the one end of motor shaft is worn out the fan blade and by the fixed head is fixed, the other end of motor shaft passes the outer cover body, the motor shaft with fixed the setting between the outer cover body, the magnetic ring sets up in the outer cover body, stator winding sets up in the magnetic ring.

The motor shaft can be provided with a limiting piece for limiting the position of the fan blade, the fixed head can be in threaded connection with the end part of the motor shaft, and a bearing can be arranged between the stator winding and the motor shaft; the shapes of the magnetic ring and the outer cover body are matched, and the magnetic ring and the outer cover body can be both cylindrical; the motor shaft and the outer cover body can be integrally formed by injection molding; the stator winding may be provided with four pole stator slots.

The application also relates to a fan, which comprises a blade assembly, wherein the blade assembly is driven by the direct current motor, the blade assembly can be as described above, and the fan can be a ceiling fan, a table fan or a vertical fan.

According to the application, the fan blade assembly and the fan driven by the direct current motor have the following technical advantages:

(1) according to the fan blade assembly driven by the direct current motor, the motor shaft with the bearing is arranged, so that the fan blade only needs to be matched with the shape of the motor shaft, the fan blade can be produced and replaced in batches, the fan blade does not need to be designed independently, the universality and the replaceability are better, and the production efficiency and the maintenance efficiency of a product are improved;

(2) the motor shaft is provided with the limiting piece, so that the fan blade can be limited at a position away from the outer cover body by a certain distance, a certain gap is reserved between the fan blade and the outer cover body, the fan blade and the outer cover body are prevented from being interfered when rotating, and the use safety and the durability of a product are improved;

(3) the motor shaft and the outer cover body can be integrally injection molded, so that the integral strength of a product is further improved, and the production and installation cost is further reduced;

(4) this application stator winding can be equipped with four pole stator slot, and the slot number is 4 for this application wire winding still less, the structure is simpler, the automated production and the installation of being convenient for.

Drawings

Fig. 1 is a perspective view of a fan blade assembly driven by a dc motor according to the present application.

Fig. 2 is an exploded view of the dc motor driven fan assembly of the present application.

Fig. 3 is a cross-sectional view of a dc motor driven fan assembly of the present application.

Fig. 4 is a detailed structure schematic diagram of the fan blade assembly driven by the dc motor according to the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

As shown in fig. 1-3, a blade assembly driven by a dc motor according to the present application is shown, which includes a fixing head 1, a blade 2, a motor shaft 3, an outer cover 4, a magnetic ring 5, a stator winding 7 and a motor fixing plate 8. The stator winding 7 is fixed on a motor fixing plate 8, one end of the motor shaft 3 penetrates out of the fan blade 2 and is fixed by a fixing head 1, and the fixing head 1 is in threaded connection with the end of the motor shaft 3. The other end of motor shaft 3 passes outer cover body 4, fixed connection between motor shaft 3 and the outer cover body 4 for motor shaft 3 can drive outer cover body 4 rotatory. The end of the motor shaft 3 passes through the motor fixing plate 8, and the motor shaft 3 can rotate relative to the motor fixing plate 8. The magnetic ring 5 is arranged in the outer cover body 4, and the shape of the magnetic ring 5 is matched with that of the outer cover body 4 and can be cylindrical. The stator winding 7 is arranged in the magnetic ring 5, the tail end of the stator winding 7 is fixed on the motor fixing plate 8, and the bearing 6 is arranged between the stator winding 7 and the motor shaft 3. When the magnetic suspension type wind driven generator is used, the direct current motor drives the motor shaft 3 to rotate, and the motor shaft 3 drives the outer cover body 4, the magnetic ring 5 and the fan blade 2 to rotate together; the stator winding 7 is fixed on the motor fixing plate 8, and the stator winding and the motor fixing plate are static. The motor shaft 3 rotates relative to the stator windings 7 through bearings 6.

As shown in fig. 4, in order to fix the fan blade 2 to the motor shaft 3 in a limited manner, a limiting member 31 may be disposed on the motor shaft 3, a shaft hole for the motor shaft 3 to pass through is disposed at the center of the fan blade 2, and a fixing head 1 for fixing and limiting the fan blade 2 on the motor shaft 3 is disposed at the outer side of the fan blade 2. The fixed head 1 is connected with the end part of the motor shaft 3 through screw threads. The motor shaft in this application is general AC motor shaft, only needs to leave the shaft hole in the center wheel hub department of fan blade according to the size of general AC motor shaft, need not to have the fan blade snap-on the dustcoat of motor to make the fan blade of this application can standardized production and installation, and need not to carry out special design according to the dustcoat of motor, improved the production efficiency and the installation effectiveness of product. The locating part through this application can be with the spacing design position department of fan blade on the motor shaft, makes and leaves certain clearance between the fan blade and the outer cover body, prevents that fan blade and outer cover body from taking place to interfere when rotatory, improves the safety in utilization and the durability of product.

In another embodiment, the motor shaft 3 and the outer cover 4 may be integrally injection molded, so as to further improve the overall strength of the product and further reduce the production and installation costs. In a preferred embodiment, the stator winding 7 can be provided with four-pole stator slots, and the number of the slots can be 4, so that the winding wire is fewer, the structure is simpler, and the automatic production and installation are convenient.

The application also relates to a fan, which comprises the fan blade component driven by the direct current motor. Other parts of the fan can adopt the prior art and are not described in detail. The fan in this application may be a ceiling fan, a desk fan or a stand fan.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. The fan blade assembly driven by the direct current motor is characterized by comprising a fixing head, a fan blade, a motor shaft, an outer cover body, a magnetic ring, a stator winding and a motor fixing plate, wherein the stator winding is arranged on the motor fixing plate, one end of the motor shaft penetrates out of the fan blade and is fixed by the fixing head, the other end of the motor shaft penetrates through the outer cover body, the motor shaft and the outer cover body are fixedly arranged, the magnetic ring is arranged in the outer cover body, and the stator winding is arranged in the magnetic ring.

2. The direct current motor-driven fan blade assembly according to claim 1, wherein a position limiting member for limiting a position of the fan blade is provided on the motor shaft.

3. The direct current motor-driven fan blade assembly according to claim 2, wherein the fixing head is in threaded connection with an end of the motor shaft.

4. A direct current motor driven fan blade assembly according to any one of claims 1 to 3, wherein a bearing is provided between the stator winding and the motor shaft.

5. The direct current motor-driven fan blade assembly according to claim 4, wherein the shape of the magnetic ring is matched with that of the outer cover.

6. The direct current motor-driven fan blade assembly according to claim 5, wherein the magnetic ring and the outer cover are both cylindrical.

7. The direct current motor-driven fan blade assembly according to any one of claims 1 to 3 and 5 to 6, wherein the motor shaft and the outer cover body are integrally injection-molded.

8. A DC motor driven impeller assembly according to any one of claims 1-3 and 5-6, wherein the stator winding is provided with four pole stator slots.

9. A fan comprising a blade assembly driven by a dc motor, wherein the blade assembly is according to any one of claims 1 to 8.

10. The fan of claim 9, wherein the fan is a ceiling fan, a desk fan, or a stand fan.