Magnetic steel assembly of outer rotor motor

Abstract

The utility model discloses an outer rotor motor magnetic steel assembly, it includes work table and two sets of clamping components, two sets of clamping components symmetrical fixed connection in the top of work table, the top of work table is fixedly provided with the pad table, be provided with the work station for placing outer rotor machine shell on the pad table, the one side of pad table is provided with the push piece, the clamping component includes servo motor and mounting block, the output of servo motor is connected with first bevel gear, through above -mentioned structure, realize the automatic separation of magnetic steel and machine shell after press -fit through non -magnetic aluminium push piece, avoid sticking and displacement, guarantee the positioning accuracy, adopt servo motor drive bevel gear and screw mechanism, drive both sides clamping piece synchronous movement, realize the quick, accurate, stable clamping of outer rotor machine shell, promote assembly efficiency and consistency. Compact overall structure, easy operation has improved the press -fit quality and reliability.

Description

Technical Field

[0001] This utility model relates to the field of magnet technology for external rotor motors, and particularly to the assembly of magnets for external rotor motors. Background Technology

[0002] In fields such as new energy vehicle drive systems, industrial fans, and smart home appliances, the demand for external rotor motors continues to grow due to their advantages such as high torque density and compact structure. As the core excitation component of external rotor motors, the assembly precision of the magnets directly determines the electromagnetic performance, operational stability, and service life of the motor. Therefore, the efficient and precise assembly of the magnets with the external rotor housing has become a key process in motor manufacturing.

[0003] However, due to the strong magnetism of the magnet itself, a strong attraction force will be generated between it and the metal housing after pressing. This can easily lead to problems such as magnet sticking, positional displacement, or even falling off during demolding. This not only affects the accuracy of the magnet position, but may also cause electromagnetic imbalance of the motor due to the asymmetry or displacement of the magnet array, resulting in increased vibration and noise and decreased performance. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an external rotor motor magnet assembly, which solves the problem of magnet sticking during demolding due to the strong magnetic attraction between the magnet and the metal housing during the process of pressing the magnet into the metal housing.

[0005] This utility model also provides an assembly with the aforementioned external rotor motor magnet, comprising: a worktable and two sets of clamping assemblies, the two sets of clamping assemblies being symmetrically and fixedly connected to the top of the worktable, a pad being fixedly provided on the top of the worktable, a work position for placing the external rotor housing being provided on the pad, and a push block being provided on one side of the pad; the clamping assembly includes a servo motor and a mounting block, the output end of the servo motor being connected to a first bevel gear, the first bevel gear meshing with a second bevel gear, the second bevel gear being fixedly sleeved on a sleeve, the sleeve being rotatably connected to the mounting block, a threaded rod being threadedly connected to the sleeve, one end of the threaded rod being connected to a clamping block for clamping the external rotor housing, ensuring safety and reliability during operation and preventing the housing from loosening during assembly.

[0006] According to the external rotor motor magnet assembly of this utility model, ferrite magnets are assembled inside the external rotor housing, and an aluminum block is provided at the bottom of the push block to prevent the hard push block from directly scratching or crushing the magnets.

[0007] According to the external rotor motor magnet assembly described in this utility model, the workbench is also equipped with a push cylinder, and the output end of the push cylinder is connected to a pressing block for pressing down the push block, which improves the automation level of the assembly process.

[0008] According to the external rotor motor magnet assembly of this utility model, the end of the threaded rod away from the clamping block is fixedly connected to a mounting plate, and the mounting plate is provided with a guide rod. The guide rod slides with the mounting block, which improves the clamping accuracy and the rigidity and stability of the entire mechanism.

[0009] According to the external rotor motor magnet assembly of this utility model, the two ends of the threaded rod are respectively provided with a first mounting seat and a second mounting seat. The first mounting seat is fixedly connected to the clamping block, and the second mounting seat is fixedly connected to the mounting plate to avoid loosening or deformation after long-term use.

[0010] According to the external rotor motor magnet assembly described in this utility model, the inner diameter of the external rotor housing is equal to the outer diameter of the push block, which can prevent the magnet from moving laterally or flipping during the pressing process.

[0011] According to the external rotor motor magnet assembly described in this utility model, the bottom shape of the lower pressing block is adapted to the top shape of the push block to prevent the push block from getting stuck or damaged due to uneven force, thus ensuring the stability of the pressing process.

[0012] According to the external rotor motor magnet assembly of this utility model, the mounting block is fixedly connected to the side of the pad by bolts; the mounting block is provided with a bearing seat for supporting the sleeve, which reduces the wear of the sleeve and the mounting block and extends the service life of the equipment.

[0013] Beneficial effects: The external rotor motor magnet assembly in this technical solution utilizes push blocks and aluminum blocks made of non-magnetic aluminum material. After pressing, the strong magnetic attraction between the magnets and the housing enables automatic and reliable separation, effectively preventing magnet adhesion or displacement during demolding and ensuring accurate assembly positioning. Simultaneously, a servo motor drives a bevel gear pair and a threaded transmission mechanism, causing the clamping blocks on both sides to move synchronously in opposite directions. This achieves rapid, precise, and stable clamping of the external rotor housing, improving assembly efficiency and consistency. The overall structure is compact and easy to operate, enhancing the quality and reliability of magnet pressing. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a structural diagram of the entire utility model; Figure 2 This is a structural diagram of the clamping assembly of this utility model; Figure 3 This is a structural diagram showing the connection relationship of the threaded rod in this utility model; Figure 4 This is a structural diagram showing the connection relationship of the outer rotor housing of this utility model.

[0015] Legend: 1. Worktable; 2. Clamping assembly; 101. Pad; 102. Outer rotor housing; 103. Push block; 104. Push cylinder; 105. Lower pressure block; 201. Servo motor; 202. First bevel gear; 203. Mounting plate; 204. Threaded rod; 205. Second bevel gear; 206. Sleeve; 207. Mounting block; 208. Clamping block; 209. Guide rod; 1021, Ferrite magnet; 1031, Aluminum block; 2041, First mounting base; 2042, Second mounting base. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4 The embodiment of this utility model includes the assembly of the magnets of the external rotor motor, comprising: a workbench 1 and two sets of clamping components 2. A pad 101 is fixedly installed on the top of the workbench 1. The upper surface of the pad 101 is machined with a circular workstation for positioning and placing the outer rotor housing 102 to ensure that the housing is accurately positioned during assembly. A push block 103 that can move up and down is provided on one side of the pad 101. The push block 103 is made of aluminum material, and an aluminum block 1031 is fixed at its bottom. The outer diameter of the push block 103 is designed to be equal to the inner diameter of the outer rotor housing 102 to ensure that the push block 103 can accurately extend into the housing and push the magnet to the designated position. A push cylinder 104 is also fixedly installed on the workbench 1. The output end of the push cylinder 104 faces downward and is connected to a lower pressure block 105. The bottom shape of the lower pressure block 105 is adapted to the top concave shape of the push block 103 to ensure that the downward pressure can be evenly and vertically transmitted to the push block 103.

[0018] Specifically, after the pressing is completed, the cylinder 104 retracts, causing the lower pressing block 105 and the push block 103 to rise. Since the ferrite magnet 1021 is magnetic, while the aluminum block 1031 is a non-magnetic material, during the pressing process, the magnetic force of the magnet 1021 will penetrate the aluminum block 1031 and be attracted to the outer rotor housing 102. When the push block 103 rises, the strong magnetic attraction between the magnet 1021 and the housing 102 is much greater than the weak force that may exist between the aluminum block 1031 and the magnet, thereby achieving reliable separation of the magnet 1021 and the aluminum block 1031. That is, after installation, the aluminum block 1031 is attracted together with the magnet 1021 and the housing 102, while the push block 103 is separated from the aluminum block 1031.

[0019] Two sets of clamping assemblies 2 are symmetrically fixedly connected to both sides of the pad 101. Each set of clamping assemblies 2 includes a servo motor 201 and a mounting block 207 fixedly mounted on the side of the pad 101 by bolts. The output end of the servo motor 201 is connected to a first bevel gear 202, which meshes with a second bevel gear 205. The second bevel gear 205 is fixedly sleeved on a sleeve 206. The sleeve 206 is rotatably connected to the mounting block 207 through a bearing seat. The sleeve 206 has an internally machined inner... The threaded rod 204 forms a threaded pair with a threaded rod 204. One end of the threaded rod 204 is fixedly connected to an arc-shaped clamping block 208 for clamping the outer rotor housing 102 via a first mounting base 2041. The other end is fixedly connected to a mounting plate 203 via a second mounting base 2042. A guide rod 209 is fixed on the mounting plate 203. The guide rod 209 slides with a guide hole on the mounting block 207 to prevent the threaded rod 204 from rotating with the sleeve 206, so that it can only perform horizontal linear motion.

[0020] Working principle: When in use, the outer rotor housing 102 is placed on the pad 101, the servo motor 201 is started, and the first bevel gear 202 is driven to rotate. The second bevel gear 205 meshing with it drives the sleeve 206 to rotate. Since the threaded rod 204 that is threaded with the sleeve 206 is restricted by the guide rod 209 and cannot rotate, the rotation of the sleeve 206 is converted into the horizontal linear motion of the threaded rod 204, thereby driving the clamping blocks 208 on both sides to move synchronously in opposite directions, so as to clamp or release the outer rotor housing 102.

[0021] Vertical linear motion of the pressing mechanism: After clamping is completed, the piston rod of the cylinder 104 is extended, driving the lower pressing block 105 to move vertically downward. The lower pressing block 105 then presses the push block 103 and the aluminum block 1031 at its bottom into the outer rotor housing 102, completing the assembly action of pushing the magnet 1021 into place. Then the cylinder 104 rises, driving the lower pressing block 105 and the push block 103 to move vertically back. The non-magnetic aluminum block 1031 is separated from the magnet 1021 because the magnet 1021 has been attracted to the housing 102, thus achieving automatic demolding.

[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. The magnet assembly of an external rotor motor, characterized in that, include: The workbench (1) and two sets of clamping assemblies (2) are symmetrically fixedly connected to the top of the workbench (1). A pad (101) is fixedly provided on the top of the workbench (1). A station for placing the outer rotor housing (102) is provided on the pad (101). A push block (103) is provided on one side of the pad (101). The clamping assembly (2) includes a servo motor (201) and a mounting block (207). The output end of the servo motor (201) is connected to a first bevel gear (202). The first bevel gear (202) meshes with a second bevel gear (205). The second bevel gear (205) is fixedly sleeved on a sleeve (206). The sleeve (206) is rotatably connected to the mounting block (207). A threaded rod (204) is threadedly connected to the sleeve (206). One end of the threaded rod (204) is connected to a clamping block (208) for clamping the outer rotor housing (102).

2. The external rotor motor magnet assembly according to claim 1, characterized in that, Ferrite magnets (1021) are installed inside the outer rotor housing (102), and aluminum blocks (1031) are provided at the bottom of the push block (103).

3. The external rotor motor magnet assembly according to claim 1, characterized in that, The workbench (1) is also provided with a push cylinder (104), and the output end of the push cylinder (104) is connected to a pressing block (105) for pressing down the push block (103).

4. The external rotor motor magnet assembly according to claim 1, characterized in that, The threaded rod (204) is fixedly connected to a mounting plate (203) at one end away from the clamping block (208). The mounting plate (203) is provided with a guide rod (209), which slides with the mounting block (207).

5. The external rotor motor magnet assembly according to claim 4, characterized in that, The threaded rod (204) has a first mounting seat (2041) and a second mounting seat (2042) at both ends. The first mounting seat (2041) is fixedly connected to the clamping block (208), and the second mounting seat (2042) is fixedly connected to the mounting plate (203).

6. The external rotor motor magnet assembly according to claim 1, characterized in that, The inner diameter of the outer rotor housing (102) is equal to the outer diameter of the pusher block (103).

7. The external rotor motor magnet assembly according to claim 3, characterized in that, The bottom shape of the pressing block (105) is adapted to the top shape of the pushing block (103).

8. The external rotor motor magnet assembly according to claim 1, characterized in that, The mounting block (207) is fixedly connected to the side of the pad (101) by bolts; the mounting block (207) is provided with a bearing seat for supporting the sleeve (206).

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