An outer rotor motor stator assembly

Abstract

The utility model discloses a kind of outer rotor motor stator assemblies, it is related to motor assembly technical field.The utility model includes mounting seat, the central place of mounting seat top is fixedly connected with cylinder, the periphery of cylinder is evenly provided with limit slot, the inside of limit slot is limit slidingly connected with winding frame, coil is wound outside between winding frame, the both ends of winding frame inside are symmetrically elastically limit slidingly connected with clamping strip, vertical slot that is set up in limit slot inside where winding frame is located is penetrated up and down, installation slot is set up in the alignment place of cylinder periphery and limit slot.The utility model can when the winding of coil is carried out, winding frame is sequentially pulled out to outside, and then the winding of coil can be more conveniently completed, the efficiency of winding is improved, and after the winding of coil is completed, the winding frame pulled out to outside can be contracted and positioned, to make the coil wound more compact, improve the quality of stator assembly.

Description

Technical Field

[0001] This utility model relates to the field of motor assembly technology, specifically to an external rotor motor stator assembly. Background Technology

[0002] A motor is a machine that converts energy such as electrical energy, hydraulic energy or pneumatic energy into mechanical energy to drive other devices. Motors can be mainly divided into internal rotor motors and external rotor motors according to their driving methods. External rotor motors have advantages such as high torque, strong stability and good heat dissipation due to the rotation of the outer casing. Therefore, they are suitable for low-speed, high-torque, stable operation and direct drive scenarios, such as drones, large ceiling fans, and agricultural tools.

[0003] The external rotor motor adopts an inner stator and an external rotor design. Its stator assembly requires the winding of coils. However, the existing external rotor motor stator assembly has a fixed design for the cylinder and winding frame, and the gap between the outer sides of the winding frame is small. This increases the difficulty of winding the coils and reduces the winding efficiency. At the same time, loosening is also likely to occur during the winding process, which reduces the quality of the stator assembly. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the existing external rotor motor stator assembly has a fixed design for the cylinder and winding frame, and the gap between the outer sides of the winding frame is small, which increases the difficulty of winding the coil. At the same time, the coil is also prone to loosening during the winding process, which reduces the quality of the stator assembly. This utility model provides an external rotor motor stator assembly.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: An external rotor motor stator assembly includes a mounting base. A cylindrical body is fixedly connected to the center of the top of the mounting base. Limiting grooves are evenly formed on the periphery of the cylindrical body. A winding frame is slidably connected to the inside of each limiting groove. A coil is wound on the outer side between the winding frames. The two ends of the inner side of the winding frames are symmetrically and elastically limited and slidably connected with retaining strips. A vertical groove penetrating through the top and bottom is formed in the winding frame inside the limiting groove. An installation groove is formed on the periphery of the cylindrical body at the position opposite to the limiting groove. A plug-in post is inserted into the installation groove. A connecting plate is fixedly installed on the top of two adjacent plug-in posts.

[0006] Furthermore, the outer side of the limiting groove adopts a shrinking design, and the inner side of the locking strip adopts an inclined design. Through the design of the locking strip, the inner side of the winding frame can be inserted inward and slidably connected to the inside of the limiting groove.

[0007] Furthermore, the top of the vertical groove extends obliquely inward, so that during the downward insertion of the plug post, the winding frame can extend inward through the action of the vertical groove.

[0008] Furthermore, the plug-in post penetrates downward through the mounting groove and the vertical groove, and after the plug-in post is plugged in, the connecting plate at the top of the plug-in post sinks into the interior of the top of the cylinder, so that the position of the winding frame inside the limiting groove can be limited and fixed by the plug-in post cooperating with the vertical groove.

[0009] Furthermore, a bearing is installed at the center of the bottom of the mounting base, and a retaining ring is engaged below the bearing at the bottom of the mounting base to limit the installation of the bearing and facilitate the assembly of the outer rotor.

[0010] Furthermore, the bottom opening of the mounting base has an outwardly expanding bevel, and the retaining ring is positioned above the bevel, which facilitates the upward installation of the bearing from the bottom opening of the mounting base.

[0011] Furthermore, mounting holes are provided on the left and right sides of the mounting base, and the top of the mounting holes adopts a conical countersunk hole design. Therefore, when the stator is installed by bolts through the mounting holes, the top of the bolts can sink into the interior of the countersunk hole at the top of the mounting holes.

[0012] The beneficial effects of this utility model are as follows: This invention utilizes a winding frame design with a limiting groove on the outer periphery of the cylinder for sliding connection. This design allows the winding frame to be pulled outwards sequentially during coil winding, making coil winding easier and improving winding efficiency. After coil winding is complete, the insertion post cooperates with the vertical groove inside the winding frame to shrink and position the outwardly pulled-out winding frame, making the wound coil more compact and improving the quality of the stator assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the plug-in post of this utility model when it is not plugged in; Figure 4 This is a three-dimensional structural diagram of the winding frame of this utility model when it is not inserted; Figure 5 This is a three-dimensional cross-sectional view of the cylindrical body of this utility model; Figure 6 This is a schematic diagram of the three-dimensional structure of the winding frame of this utility model; Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the winding frame of this utility model; Figure 8 This is an exploded view of the three-dimensional structure of this utility model.

[0014] Reference numerals in the attached drawings: 1. Mounting base; 2. Cylinder; 3. Limiting groove; 4. Winding frame; 5. Coil; 6. Clamping strip; 7. Vertical groove; 8. Mounting groove; 9. Insertion post; 10. Connecting plate; 11. Bearing; 12. Clamping ring; 13. Bevel; 14. Mounting hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0016] A preferred embodiment of the present invention, an external rotor motor stator assembly, will be described in detail below, such as... Figures 1-8 As shown, an external rotor motor stator assembly includes a mounting base 1. A cylindrical body 2 is fixedly connected to the center of the top of the mounting base 1. Limiting grooves 3 are evenly opened on the periphery of the cylindrical body 2. A winding frame 4 is slidably connected inside the limiting grooves 3. A coil 5 is wound on the outer side between the winding frames 4. The two ends of the inner side of the winding frame 4 are symmetrically elastically limited and slidably connected with retaining strips 6. The outer side of the limiting groove 3 adopts a shrinking design, and the inner side of the retaining strip 6 adopts an inclined design. Through the design of the retaining strip 6, the inner side of the winding frame 4 can be inserted inward and limited and slidably connected inside the limiting groove 3.

[0017] The winding frame 4 has a vertical groove 7 that runs vertically through the inside of the limiting groove 3. The top of the vertical groove 7 extends obliquely inward, so that the winding frame 4 can extend inward through the vertical groove 7 during the downward insertion of the insertion post 9. The outer periphery of the cylinder 2 is provided with an installation groove 8 that is aligned with the limiting groove 3. The insertion post 9 is inserted into the inside of the installation groove 8. The top of two adjacent insertion posts 9 is fixedly installed with a connecting plate 10. The insertion post 9 passes through the installation groove 8 and the vertical groove 7 downward. After the insertion post 9 is inserted, the connecting plate 10 at the top of the insertion post 9 sinks into the inside of the top of the cylinder 2. Thus, the position of the winding frame 4 inside the limiting groove 3 can be limited and fixed by the cooperation between the insertion post 9 and the vertical groove 7.

[0018] A bearing 11 is installed at the center of the bottom of the mounting base 1. A retaining ring 12 is engaged below the bearing 11 at the bottom of the mounting base 1 to limit the installation of the bearing 11 and facilitate the assembly of the outer rotor. An outwardly expanding bevel 13 is provided at the opening at the bottom of the mounting base 1, and the retaining ring 12 is located above the bevel 13, which is conducive to the upward installation of the bearing 11 from the opening at the bottom of the mounting base 1.

[0019] Mounting holes 14 are provided on the left and right sides of the mounting base 1, and the top of the mounting holes 14 adopts a conical countersunk hole design. Therefore, when the stator is installed by bolts and mounting holes 14, the top of the bolts can sink into the inside of the countersunk hole at the top of the mounting holes 14.

[0020] The working principle of this utility model is as follows: During assembly, the inner side of the winding frame 4 is inserted into the interior of the limiting groove 3 in sequence. Due to the design of the inner side retaining strip 6 of the winding frame 4, it can retract inward when the retaining strip 6 contacts the outer opening of the limiting groove 3, and then enter the interior of the limiting groove 3. Through the design of the outer side of the limiting groove 3 contraction, the inner side of the winding frame 4 can achieve the limiting sliding connection inside the limiting groove 3 after the retaining strip 6 enters the interior of the limiting groove 3.

[0021] After the winding frame 4 is inserted, when winding the coil 5, the winding frame 4 is pulled outward by the limiting sliding connection inside the limiting groove 3, so that the winding frame 4 to be wound can be wound better on the outside of the winding frame 4. After the winding of the coil 5 is completed, the insertion post 9 is inserted downward inside the mounting groove 8. During the downward insertion of the insertion post 9, the bottom end of the insertion post 9 can first be inserted into the inclined part at the top of the vertical groove 7, and during the downward insertion, the winding frame 4 can be moved inward until the insertion post 9 passes through the vertical groove 7 and enters the mounting groove 8 at the bottom. This allows the winding frame 4 to be contracted and positioned after the coil 5 is wound. During the contraction of the winding frame 4, the wound coil 5 can also be made more compact, thus completing the winding of the coil 5 on the outside of each winding frame 4 in sequence.

[0022] After the coil 5 is wound, the bearing 11 is installed upward into the interior of the bottom of the mounting base 1 using the bevel 13 at the bottom of the mounting base 1. After the bearing 11 is installed, the retaining ring 12 is then snapped into place below the bearing 11 at the bottom of the mounting base 1 to limit the bearing 11, which is beneficial for the subsequent assembly of the outer rotor.

[0023] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An external rotor motor stator assembly, comprising a mounting base (1), characterized in that, A cylindrical body (2) is fixedly connected to the center of the top of the mounting base (1). Limiting grooves (3) are evenly opened on the periphery of the cylindrical body (2). A winding frame (4) is slidably connected inside the limiting groove (3). A coil (5) is wound on the outer side between the winding frames (4). A retaining strip (6) is symmetrically and elastically slidably connected at both ends of the inner side of the winding frame (4). A vertical groove (7) is opened inside the limiting groove (3). An installation groove (8) is opened on the periphery of the cylindrical body (2) at the position opposite to the limiting groove (3). A plug-in post (9) is inserted into the installation groove (8). A connecting plate (10) is fixedly installed on the top of two adjacent plug-in posts (9).

2. The external rotor motor stator assembly according to claim 1, characterized in that, The outer side of the limiting groove (3) adopts a shrinking design, and the inner side of the card strip (6) adopts an inclined design.

3. The external rotor motor stator assembly according to claim 1, characterized in that, The top of the vertical groove (7) extends obliquely inward.

4. The external rotor motor stator assembly according to claim 1, characterized in that, The plug (9) penetrates downward through the mounting groove (8) and the vertical groove (7), and after the plug (9) is plugged in, the connecting plate (10) at the top of the plug (9) sinks into the interior of the top of the cylinder (2).

5. The external rotor motor stator assembly according to claim 1, characterized in that, A bearing (11) is installed at the center of the bottom of the mounting base (1), and a retaining ring (12) is engaged below the bearing (11) at the bottom of the mounting base (1).

6. The external rotor motor stator assembly according to claim 5, characterized in that, The bottom opening of the mounting base (1) has an outwardly expanding bevel (13), and the retaining ring (12) is located above the bevel (13).

7. The external rotor motor stator assembly according to claim 1, characterized in that, The mounting base (1) has mounting holes (14) on its left and right sides, and the top of the mounting holes (14) is designed with a tapered countersunk hole.

Images