Single-phase asynchronous motor housing and manufacturing method thereof

Abstract

The present invention discloses a single-phase asynchronous motor housing and a manufacturing method thereof. The motor housing includes a shell and an end cover. A limiting member is provided on the inner side of the end cover. The limiting member includes a fixed block, a fixed column and a limiting block. The fixed column is provided between the fixed block and the limiting block. A limiting groove is provided on the shell. A guide groove is provided between the end face of the shell and the limiting groove. The limiting block enters the limiting groove from the guide groove to enable the shell to be detachably connected to the end cover. The manufacturing method includes the following steps: (a) single product preparation; (b) installation of heat dissipation fins; (c) fixing the support seat; (d) installation of the end cover. The motor housing structure of the present invention is novel, and the disassembly and assembly between the shell and the end cover is simple, replacing the bolt fixing method, which is labor-saving, convenient, flexible and convenient. The manufacturing method is simple in process, adopts a split design instead of an integrated molding process, is easy to operate and adjust, reduces the complexity of the shell mold structure, and thus reduces the manufacturing cost.

Description

Technical Field

[0001] The invention belongs to the technical field of electric motors, and in particular relates to a single-phase asynchronous motor housing and a manufacturing method thereof. Background Art

[0002] Compared with ordinary permanent magnet motors, single-phase asynchronous motors do not require permanent magnets and their lifespan will not be affected by the loss of magnetism over time. Therefore, single-phase asynchronous motors have a long lifespan.

[0003] Existing single-phase asynchronous motors have the following defects during use: 1. The housing and the end cover are fixed with bolts, which require tools to operate and are inconvenient to disassemble and assemble. Repeated disassembly and assembly will cause thread stripping, affecting the tightness; 2. The housing, base, and heat dissipation fins are manufactured by one-piece molding. The mold cavity structure is complex, the manufacturing cost is high, and local defects cannot be replaced separately, affecting use. Or they are welded, which has high operation intensity, is difficult to disassemble, and is not convenient for replacement, which also affects use. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art and provide a single-phase asynchronous motor housing and a manufacturing method thereof. The motor housing has a novel structure, and the housing and the end cover are easy to disassemble and assemble, replacing the bolt fixing method, which is labor-saving and convenient, flexible and convenient. The manufacturing method is simple and adopts a split design instead of an integrated molding process, which is easy to operate and adjust, reduces the complexity of the housing mold structure, and thus reduces the manufacturing cost.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A single-phase asynchronous motor housing comprises a housing and an end cap, characterized in that a stopper is provided on the inner side of the end cap, the stopper comprising a fixing block, a fixing post, and a stopper, the fixing post being disposed between the fixing block and the stopper, a stopper slot being defined in the housing, a guide slot being provided between the end face of the housing and the stopper slot, the stopper slot being inserted into the stopper slot through the guide slot to allow the housing to be removably fixed to the end cap. This motor housing has a novel structure, simplifies assembly and disassembly between the housing and the end cap, and replaces bolt fastening methods, resulting in a labor-saving, convenient, and flexible design.

[0007] Furthermore, heat dissipation fins are distributed circumferentially on the shell, and limiting through holes are provided on the shell. Positioning protrusions corresponding to the limiting through holes are provided on the heat dissipation fins, so that the heat dissipation fins can be quickly installed and positioned on the shell with low operation difficulty. It adopts a split design and can be used immediately after installation. It can be replaced if deformed or damaged, which reduces the complexity of the shell mold structure and thus reduces the manufacturing cost.

[0008] Furthermore, pressure rings are symmetrically distributed on the shell, and a support seat is provided at the bottom of the shell. Elastic pull rod assemblies and cross braces are symmetrically distributed on the support seat. The cross braces cooperate with the elastic pull rod assembly to clamp and fix the pressure ring so that the pressure ring limits the heat sink fins from being separated from the shell. The pressure ring is restricted on both sides and cannot move freely, and thus cannot be separated from the heat sink fins. The heat sink fins are blocked by the pressure ring, so that the positioning protrusions cannot fall out of the limiting through holes. The installation is stable and reliable, and there is no need to weld the heat sink fins and the shell, which reduces the operation intensity and is labor-saving and convenient.

[0009] Furthermore, a card slot corresponding to the heat sink fin is provided on the inner side of the pressure ring, and the two are in close contact, which limits the free movement of the heat sink fin and ensures the installation stability of the heat sink fin; a fixing pin is provided on the elastic pull rod assembly, and a fixing through hole and a limiting recessed hole are provided on the pressure ring, the fixing through hole corresponds to the fixing pin, and the limiting recessed hole corresponds to the cross support rod, the cross support rod presses the pressure ring outward, and the elastic pull rod assembly generates a rebound force to pull the pressure ring back inward, so that the pressure ring is clamped and fixed, and cannot move freely, and the installation stability is high.

[0010] Furthermore, the elastic pull rod assembly includes a sleeve, a support rod, a spring and a clamping block. The sleeve is arranged on the support seat, the support rod moves in the sleeve, the support rod rotates to connect the clamping block, and the spring connects the support rod and the support seat. The elastic pull rod assembly has a novel structure, flexible and variable telescopic length, and good recovery performance, so as to be suitable for the actual distance between the two pressure rings and has strong applicability.

[0011] Furthermore, the support seat is provided with a mounting protrusion, and the bottom of the shell is provided with a positioning through hole corresponding to the mounting protrusion. The support seat and the shell are detachable and can be installed and used at any time. It is flexible and convenient, replacing fixing methods such as bolts and welding, which is labor-saving and convenient.

[0012] Furthermore, an ear block is provided on the inner side of the end cover, and the ear block is connected to the fixed block by bolts, which is convenient for disassembly and assembly, and can be used whenever installed, which is flexible and convenient; a positioning hole is provided on the ear block, and a positioning column corresponding to the positioning hole is provided on the fixed block, so that the limiting part can be quickly installed and positioned on the ear block, reducing the difficulty of hole alignment, thereby facilitating the insertion of bolts for connection.

[0013] A method for manufacturing a single-phase asynchronous motor housing is characterized by comprising the following steps:

[0014] (a) Single product preparation:

[0015] The shell and the end cover are obtained by mold casting;

[0016] (b) Install the heat sink:

[0017] Align the positioning protrusions on the heat sink fins with the limiting through holes on the housing and snap them in place to position the heat sink fins on the housing.

[0018] (c) Fixed support seat:

[0019] ① Cover the positioning through hole at the bottom of the shell with the mounting protrusion on the support base to position the shell on the support base and support the shell through the support base;

[0020] ② Sleeve the pressing rings on both ends of the shell and cover the heat sink fins through the slots inside the pressing rings;

[0021] ③ Slide the pressing ring horizontally so that the limiting concave hole on the pressing ring covers the horizontal support rod on the support seat;

[0022] ④ Stretch the elastic pull rod assembly on the support seat outward so that the clamping block of the elastic pull rod assembly bypasses the pressure ring, then rotate the clamping block to align the fixing pin on the clamping block with the fixing through hole on the pressure ring. After removing the force, the fixing pin passes through the fixing through hole, and the clamping block cooperates with the cross brace to clamp the pressure ring;

[0023] (d) Install the end cap:

[0024] ①Install the limiter on the end cover;

[0025] ② Align the limit block of the limit piece with the guide groove on the end face of the shell and slide it in, then rotate the end cover so that the limit block enters the limit groove of the shell, so that the end cover is limited at one end of the shell.

[0026] Furthermore, in step (d), when installing the limit piece, first fix the ear block on the end cover: ① align the mounting portion on the ear block with the mounting groove on the inner side of the end cover and snap it in so that the ear block is positioned on the inner side of the end cover, and then weld the connection between the mounting portion and the mounting groove to fix the ear block on the end cover; ② align the positioning column on the limit piece with the positioning hole on the ear block and insert it to position the limit piece on the ear block; ③ connect and fix the limit piece to the ear block with bolts. The ear block is simple to position, firmly fixed, and not easy to loosen. The limit piece is flexible to disassemble and assemble, can be used immediately after installation, and is easy to use.

[0027] Furthermore, in step (c), before docking the shell with the support seat, the cross brace is first aligned with the mounting recess on the support seat and snapped in, so that the cross brace is limited on the support seat. The cross brace is easy to assemble and disassemble, and can be used immediately after assembly. The design length of the cross brace can be flexibly changed, and the spacing between the two pressure rings on the shell can be changed accordingly to adapt to shells of different lengths, thereby improving applicability.

[0028] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0029] The shell and the heat sink fins and the support seat are detachable and adopt a split design. They can be used immediately after installation and can be replaced if deformed or damaged, which reduces the complexity of the shell mold structure and thus reduces the manufacturing cost. After assembly, the pressure ring covers the circumferentially distributed heat sinks, and the support seat presses the pressure ring outwards through the cross brace rod, and the clamping block squeezes the pressure ring inwards. The inside and outside are simultaneously subjected to force, so that the pressure ring is clamped and fixed and cannot move freely, while the heat sink fins are blocked by the pressure ring and can move freely, and thus cannot separate from the shell, ensuring the installation stability of the heat sink fins. Instead of the existing welding fixation of the heat sink fins and the shell, the operation intensity is reduced, and there is no need to fix each heat sink fin separately, and the fixation is in place in one step, which is labor-saving and convenient. The shell is sleeved on the support seat, and the support seat and the pressure ring are connected by the cross brace rod and the elastic pull rod assembly, so that the support seat cannot separate from the shell, thereby improving the connection reliability of the support seat and the shell, and cannot separate freely. They are restrained by each other, and the support seat cannot move freely relative to the shell. The assembly structure is highly stable, replacing fixing methods such as bolts and welding, and is labor-saving and convenient to disassemble and assemble.

[0030] 2. The end cover is detachably connected to the shell through a limit piece. Align the limit block of the limit piece with the guide groove on the end face of the shell and slide it in. Then rotate the end cover to make the limit block enter the limit groove of the shell. The limit block and the guide groove are staggered. The limit groove blocks the lateral movement of the limit block, thereby limiting the axial movement of the end cover relative to the shell. The connection is reliable and not easy to separate. It replaces the bolt fixing method and is labor-saving and convenient to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings:

[0032] Figure 1 It is a structural schematic diagram of the housing of the single-phase asynchronous motor in the present invention;

[0033] Figure 2 This is a schematic structural diagram of the connection between the housing and the heat dissipation fins in the present invention;

[0034] Figure 3 This is a schematic structural diagram of the connection between the medium-pressure ring and the heat dissipation fins of the present invention;

[0035] Figure 4 This is a schematic structural diagram of the connection between the end cover and the limiting member in the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the connection between the end cover and the ear block in the present invention;

[0037] Figure 6 It is a structural schematic diagram of the support base in the present invention;

[0038] Figure 7 Schematic diagram of the structure of the elastic pull rod assembly in the present invention;

[0039] Figure 8 It is a structural schematic diagram of the limiting member in the present invention.

[0040] In the figure: 1-shell; 2-end cover; 3-limiting member; 4-fixing block; 5-fixing column; 6-limiting block; 7-limiting groove; 8-guide through groove; 9-ear block; 10-fixing screw hole; 11-mounting hole; 12-positioning hole; 13-positioning column; 14-heat sinking fin; 15-limiting through hole; 16-positioning protrusion; 17-pressing ring; 18-slot; 19-support seat; 20-elastic pull rod assembly; 21-cross support rod; 22-sleeve; 23-support rod; 24-spring; 25-clamping block; 26-fixing pin; 27-fixing through hole; 28-limiting concave hole; 29-mounting protrusion; 30-positioning through hole; 31-mounting countersunk hole; 32-mounting concave hole; 33-mounting part; 34-mounting groove. DETAILED DESCRIPTION

[0041] like Figures 1 to 8 The figure shows the housing of a single-phase asynchronous motor according to the present invention, comprising: a housing 1 and an end cover 2. A limiter 3 is provided on the inner side of the end cover 2. The limiter 3 comprises a fixing block 4, a fixing column 5, and a limiter 6. The fixing column 5 is provided between the fixing block 4 and the limiter 6. The structure is simple and the manufacturing cost is low. A limiter slot 7 is provided on the housing 1. A guide slot 8 is provided between the end face of the housing 1 and the limiter slot 7. The guide slot 8 is connected to the limiter slot 7 to form an open slot with an L-shaped cross section. The open slot is centrally symmetrical on the housing 1. The open slot can serve as an internal and external air flow channel for the housing 1 to improve heat dissipation performance. The limiter 6 enters the limiter slot 7 from the guide slot 8 to allow the housing 1 to be detachably connected to the end cover 2, replacing the bolt fixing method, which is labor-saving and convenient to disassemble and assemble.

[0042] An ear block 9 is provided on the inner side of the end cover 2, and a bolt is connected between the fixing screw hole 10 of the ear block 9 and the mounting hole 11 on the fixing block 4, which is convenient for disassembly and assembly, and can be used immediately after installation. A positioning hole 12 is provided on the ear block 9, and a positioning column 13 corresponding to the positioning hole 12 is provided on the fixing block 4, which realizes the rapid installation and positioning of the limit member 3 on the ear block 9, reduces the difficulty of hole alignment, and facilitates the insertion of bolts for connection.

[0043] There are heat dissipation fins 14 distributed circumferentially on the shell 1, and a limiting through hole 15 is provided on the shell 1. The heat dissipation fins 14 are provided with a positioning protrusion 16 that is compatible with the limiting through hole 15, so that the heat dissipation fins 14 can be quickly installed and positioned on the shell 1. The operation is easy and the split design is adopted. It can be installed and used at any time and can be replaced if deformed or damaged, which reduces the complexity of the mold structure of the shell 1 and thus reduces the manufacturing cost. There are symmetrically distributed pressure rings 17 on the shell 1, and a card groove 18 corresponding to the heat sink 14 is provided on the inner side of the pressure ring 17. A support seat 19 is provided at the bottom of the shell 1, and an elastic pull rod assembly 20 and a cross support rod 21 are symmetrically distributed on the support seat 19. The cross support rod 21 cooperates with the elastic pull rod assembly 20 to clamp and fix the pressure ring 17. The pressure ring 17 is restricted on both sides and cannot move freely. The pressure ring 17 is in close contact with the heat sink 14, and the heat sink fins 14 are close to the outer surface of the shell 1, ensuring good heat dissipation performance. The heat sink fins 14 are blocked by the pressure ring 17 and move freely, so that the positioning protrusion 16 cannot fall out of the limiting through hole 15, and the heat sink fins 14 cannot be separated from the shell 1, which ensures the installation stability of the heat sink 14, replaces the existing heat sink fins 14 and the shell 1 welded and fixed, reduces the operation intensity, and is labor-saving and convenient.

[0044] The elastic pull rod assembly 20 includes a sleeve 22, a support rod 23, a spring 24 and a clamping block 25. The sleeve 22 is arranged on the support seat 19, and the support rod 23 moves in the sleeve 22. The support rod 23 rotates to connect the clamping block 25. The spring 24 is located in the sleeve 22. The spring 24 connects the support rod 23 and the support seat 19. The elastic pull rod assembly 20 has a novel structure, flexible and variable telescopic length, and good recovery performance, so as to be suitable for the actual distance between the two pressure rings 17 and has strong applicability. A fixing pin 26 is provided on the clamping block 25, and a fixing through hole 27 and a limiting recessed hole 28 are provided on the pressure ring 17. The fixing through hole 27 corresponds to the fixing pin 26, and the limiting recessed hole 28 corresponds to the cross brace 21. The support seat 19 is provided with an installation recessed hole 32 corresponding to the cross brace 21. The cross brace 21 presses against the pressure ring 17 outward, and the spring 24 generates a rebound force to pull back the clamping block 25 through the support rod 23. The clamping block 25 squeezes the pressure ring 17 inward, and the inside and outside are subjected to force at the same time, so that the pressure ring 17 is clamped and fixed, and cannot move freely, and the installation stability is high.

[0045] The top of the support base 19 is provided with a mounting protrusion 29, and the bottom of the housing 1 is provided with a positioning through hole 30 corresponding to the mounting protrusion 29. The support base 19 and the housing 1 are detachable and can be used at any time. It is flexible and convenient, replacing fixing methods such as bolts and welding, saving effort and being convenient. The support base 19 and the pressure ring 17 are connected by a cross brace 21 and an elastic pull rod assembly 20, so that the support base 19 cannot be separated from the housing 1, improving the connection reliability of the support base 19 and the housing 1. They cannot be freely separated and are mutually restrained. The support base 19 cannot move freely relative to the housing 1, and has high stability. The bottom plate of the support base 19 is provided with a mounting countersunk hole 31, which is convenient for nail connection and improves the convenience of installation.

[0046] A method for manufacturing a single-phase asynchronous motor housing comprises the following steps:

[0047] (a) Single product preparation:

[0048] The shell 1 and the end cover 2 are obtained by mold casting, and the obtained castings have dense structure, high mechanical properties, high dimensional accuracy and good quality.

[0049] (b) Install the heat dissipation fins 14:

[0050] Align the positioning protrusions 16 on the heat dissipating fins 14 with the limiting through holes 15 on the shell 1 and snap them in, so that the heat dissipating fins 14 are positioned on the shell 1. The positioning protrusions 16 are in close contact with the inner wall of the limiting through holes 15, and there is a large friction force, which makes it difficult for them to fall out freely. The positioning is simple, the operation is easy, and the heat dissipating fins 14 can be used immediately after installation.

[0051] (c) Fixed support seat 19:

[0052] ① Align the cross brace 21 with the mounting recess 32 on the support seat 19 and snap it in so that the cross brace 21 is limited on the support seat 19. It is easy to assemble and disassemble and can be used immediately after assembly. The design length of the cross brace 21 can be flexibly changed, and the spacing between the two pressure rings 17 on the shell 1 can be changed accordingly to adapt to shells 1 of different lengths, thereby improving applicability.

[0053] ② Cover the positioning through hole 30 at the bottom of the shell 1 with the mounting protrusion 29 on the support seat 19 to position the shell 1 on the support seat 19. The shell 1 is supported by the support seat 19. There is no need to support the shell 1 with the help of manpower or equipment, which reduces the operation intensity, simplifies docking, and reduces the difficulty of assembly.

[0054] ③ Pressing rings 17 are sleeved on both ends of the shell 1, and the heat sink 14 is sleeved through the slots 18 on the inner side of the pressing ring 17. The heat sink 14 cannot be separated from the shell 1 outward and is fixed on the shell 1 by a limit. There is no need to fix each heat sink fin 14 separately. The fixing is done in one step, which is labor-saving and convenient.

[0055] ④ Slide the pressure ring 17 laterally so that the limiting recessed hole 28 on the pressure ring 17 covers the cross brace 21 on the support seat 19, completing the docking of the pressure ring 17 and the cross brace 21, and realizing the positioning of the pressure ring 17 on the housing 1. The cross brace 21 is limited between the pressure ring 17 and the support seat 19 and cannot escape freely, so the installation is reliable.

[0056] ⑤ Pull the support rod 23 outward to make the clamping block 25 bypass the pressure ring 17, then rotate the clamping block 25, align the fixing pin 26 on the clamping block 25 with the fixing through hole 27 on the pressure ring 17, and after removing the force, make the fixing pin 26 pass through the fixing through hole 27, and the clamping block cooperates with the cross brace 21 to clamp the pressure ring 17. The clamping block 25 cannot rotate freely and is tightly connected to the pressure ring 17. The pressure ring 17 is simultaneously supported by the cross brace 21 and the clamping force of the clamping block 25. The two forces act in opposite directions, so that the pressure ring 17 is clamped and fixed, cannot slide freely, and is stable and reliable.

[0057] (d) Install end cap 2:

[0058] ① Align the mounting portion 33 on the ear block 9 with the mounting groove 34 on the inner side of the end cover 2 and snap it in, so that the ear block 9 is positioned on the inner side of the end cover 2. The positioning and installation of the ear block 9 is simple, ensuring sufficient contact area between the ear block 9 and the shell 1; then weld the connection between the mounting portion 33 and the mounting groove 34 to fix the ear block 9 on the end cover 2 firmly and reliably, and not easily loose.

[0059] ② Align the positioning column 13 on the fixing block 4 with the positioning hole 12 on the ear block 9 and insert it to position the limit member 3 on the ear block 9, thereby achieving rapid installation and positioning of the limit member 3 on the ear block 9, reducing the difficulty of hole alignment, and facilitating subsequent bolt connection.

[0060] ③ The fixing block 4 is connected and fixed to the ear block 9 by bolts, which is firm and reliable, easy to assemble and disassemble, and can be used at any time, which is flexible and convenient.

[0061] ④ Align the limit block 6 of the limit member 3 with the guide groove 8 on the end face of the shell 1 and slide it in, then rotate the end cover 2 to make the limit block 6 enter the limit groove 7 of the shell 1, so that the end cover 2 is limited at one end of the shell 1. The guide assembly and docking are simple and the operation difficulty is low. The limit block 6 is staggered with the guide groove 8, and the limit groove 7 blocks the lateral movement of the limit block 6, thereby limiting the axial movement of the end cover 2 relative to the shell 1. The connection is reliable and not easy to separate. It replaces the bolt fixing method and is labor-saving and convenient to disassemble.

[0062] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. Single-phase asynchronous motor housing, including:

12. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a first end, and a second end, and a second end of a screw bolt comprises a first end, and a second end of a screw bolt comprises a second nut. The bosses comprise a through-hole, a second end, and a second nut. The elastic pull rod assembly includes a sleeve, a support rod, a spring and a clamping block. The sleeve is arranged on the support seat, the support rod moves in the sleeve, the support rod is rotatably connected to the clamping block, and the spring connects the support rod and the support seat; a fixing pin is provided on the clamping block, and a fixing through hole and a limiting recessed hole are provided on the pressure ring. The fixing through hole corresponds to the fixing pin, and the limiting recessed hole corresponds to the cross support rod.

2. The single-phase asynchronous motor housing according to claim 1, characterized in that: The inner side of the pressing ring is provided with a clamping groove corresponding to the heat dissipation fin.

3. The single-phase asynchronous motor housing according to claim 1, characterized in that: The support seat is provided with a mounting protrusion, and the bottom of the shell is provided with a positioning through hole corresponding to the mounting protrusion.

4. The single-phase asynchronous motor housing according to claim 1, characterized in that: An ear block is provided on the inner side of the end cover, and the ear block is connected to the fixing block by bolts; a positioning hole is provided on the ear block, and a positioning column corresponding to the positioning hole is provided on the fixing block.

5. The method for manufacturing a single-phase asynchronous motor housing according to claim 1, characterized in that The process includes the following steps: (a) Product preparation: The shell and end cover are obtained by mold casting; (b) Installing the heat sink fins: Align the positioning protrusions on the heat sink fins with the limiting through holes on the shell and insert them to position the heat sink fins on the shell; (c) Fixing the support seat: ① Cover the positioning through holes at the bottom of the shell with the mounting protrusions on the support seat to position the shell on the support seat, and support the shell through the support seat; ② Sleeve the pressure rings at both ends of the shell, and cover the heat sink fins through the card grooves on the inner side of the pressure ring; ③ Slide the pressure ring horizontally so that the limiting recessed holes on the pressure ring cover the cross support rod on the support seat; ④ Stretch the elastic pull rod assembly on the support seat outward so that the clamping block of the elastic pull rod assembly bypasses the pressure ring, and then rotate the clamping block to align the fixing pin on the clamping block with the fixing through hole on the pressure ring. After removing the force, the fixing pin is inserted into the fixing through hole, and the clamping block cooperates with the cross support rod to clamp the pressure ring; (d) Installing the end cover: ① Install the limiter on the end cover; ② Align the limit block of the limit piece with the guide groove on the end face of the shell and slide it in, then rotate the end cover so that the limit block enters the limit groove of the shell, so that the end cover is limited at one end of the shell.

6. The method for manufacturing a single-phase asynchronous motor housing according to claim 5, characterized in that: When installing the limiter in step (d), first fix the ear block on the end cover: ① Align the mounting portion on the ear block with the mounting groove on the inner side of the end cover and snap it in so that the ear block is positioned on the inner side of the end cover, and then weld the connection between the mounting portion and the mounting groove to fix the ear block on the end cover; ② Align the positioning column on the limiter with the positioning hole on the ear block and insert it to position the limiter on the ear block; ③ Connect and fix the limiter and the ear block with bolts.

7. The method for manufacturing a single-phase asynchronous motor housing according to claim 5, wherein: In step (c), before docking the housing with the support base, first align the cross brace with the mounting recess on the support base and snap it in, so that the cross brace is limited on the support base.

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