CN-113833890-B - Manufacturing method of electric valve

CN113833890BCN 113833890 BCN113833890 BCN 113833890BCN-113833890-B

Abstract

The manufacturing approach of a kind of electronic valve, including the stator assembly that is assembled presses into the body of the control part, connect stator assembly and body into a whole through the threaded connection, the circuit board is placed in body and pressed against contact pin of the body, contact pin of the stator assembly, connect circuit board and body through threaded connection, the upper cover is sealingly connected with body. The stator component and the shell are detachably connected, the circuit board and the shell are also detachably connected, and the stator component and the shell are convenient to detach during maintenance, so that the assembly process is optimized, and the production cost and the maintenance cost are reduced.

Inventors

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Assignees

浙江三花汽车零部件有限公司

Dates

Publication Date: 20260505
Application Date: 20201223
Priority Date: 20200624

Claims (9)

1. A method of manufacturing an electrically operated valve, comprising the steps of: The assembly of the first component comprises that the assembled stator component is pressed into a shell of the control part, the stator component and the shell are connected into a whole through threaded connection, a circuit board is arranged in the shell and is in pressure connection with a contact pin of the shell and a contact pin of the stator component, the circuit board is connected with the shell through threaded connection, and an upper cover is in sealing connection with the shell; The assembly of the second component includes: assembling the first preassembly, namely assembling the third bearing and the end cover through press fitting, and fixing the end cover and the sleeve through interference fit of the first bearing and the sleeve; placing one end of a component of the shaft part and the detection magnetic ring in a third bearing and fixing, and then press-fitting and connecting the rotor, a connecting bracket integrated with the rotor, a sun wheel and the first bearing, wherein the detection magnetic ring is sleeved on the radial periphery of the shaft part, the control part comprises a position sensor, the position sensor can sense the magnetic field intensity of the detection magnetic ring, the position sensor is positioned above the detection magnetic ring and is electrically connected and/or in signal connection with a circuit board, the circuit board is positioned above the rotor component, and the detection magnetic ring is positioned at one end of the rotor component close to the circuit board; The second preassembly comprises the steps of press fitting a second bearing, a fixed gear ring and a connecting seat, so that at least part of the second bearing is positioned in a hole of the connecting seat, and one end of the fixed gear ring is in limit connection with the connecting seat; The first preassembly piece is assembled with the second preassembly piece and the transmission part, the output stage planetary gear assembly, the second planetary gear assembly, the first planetary gear assembly and the second preassembly piece are assembled, the first planetary gear assembly, the second planetary gear assembly and the output stage planetary gear assembly are at least partially arranged in the fixed gear ring, the shaft part is connected with the output shaft, the shaft part can be driven by the output shaft, the first preassembly piece and the second preassembly piece are assembled, the connecting part of the sleeve and the connecting seat is fixed through welding, the rotor, the connecting support, the shaft part and at least part of the transmission part are located in a space formed by the end cover, the sleeve and the connecting seat, and the output shaft can drive the valve rod to rotate.
2. The manufacturing method according to claim 1, characterized in that the manufacturing method further comprises the steps of: The assembly of the third component comprises the matching assembly of the second component with the valve body component and the valve core, the assembly of the valve body component and the valve core, the connection of the second component with the valve core and the fixed connection of the second component with the valve body component; The first part is connected with the third part through screw threads.
3. The method of manufacturing according to claim 1, wherein the step of pressing the assembled stator assembly into the housing of the control section during assembly of the first component includes aligning the second communication hole of the housing with the corresponding connection hole of the stator assembly, and then inserting the second screw through the connection hole of the stator assembly and into the second communication hole, and tightening to connect the stator assembly with the housing; The step of placing the circuit board in the shell comprises the steps of placing the circuit board in a first step part of the shell, aligning a third communication hole of the shell with a connecting hole corresponding to the circuit board, penetrating a third screw through the connecting hole of the circuit board and extending into the third communication hole, and screwing to connect the circuit board with the shell; the step of sealingly connecting the upper cover to the housing includes laser welding the upper cover to the housing.
4. A method of manufacturing a stator assembly according to claim 3, further comprising placing a first seal ring in a first seal mounting groove in the bottom of the housing prior to pressing the assembled stator assembly into the housing, the lower end face of the stator assembly abutting the first seal ring when the assembled stator assembly is pressed into the housing.
5. The method of manufacturing of claim 2, wherein the assembly of component three further comprises: Assembling a second sealing ring with the valve body assembly so that the second sealing ring is positioned between the valve body and the connecting seat; the stop block and the spring are arranged in an inner cavity formed by the output shaft, the stop block wraps the tail end of the shaft part positioned in the output shaft, one end of the spring is abutted with the stop block, and the other end of the spring is abutted with the valve rod; the component formed by the second component, the stop block and the spring is spliced with the valve rod through the output shaft, the other end of the spring is arranged in a fourth accommodating cavity in the valve rod, the third flange part of the connecting seat is contacted with the second sealing ring, and the second component is connected with the valve body component by screwing the compression nut.
6. The method of manufacturing of claim 2, wherein the assembly of component three further comprises: Assembling a second sealing ring with the valve body assembly so that the second sealing ring is positioned between the valve body and the connecting seat; Placing the spring into a fourth accommodating cavity of the valve rod, and placing a stop block in the inner cavity of the output shaft and wrapping the tail end of the shaft part; The assembly formed by the second part, the stop block and the spring is spliced with the valve rod through the output shaft, one end of the spring is abutted against the stop block, the other end of the spring is arranged in a fourth accommodating cavity in the valve rod, the third flange part of the connecting seat is contacted with the second sealing ring, and the second part is connected with the valve body assembly by screwing the compression nut.
7. The method of manufacturing of claim 5 or 6, wherein the assembly of component three further comprises: assembling the valve rod, the valve core, the fourth bearing, the third gasket and the valve body assembly; Assembling the valve rod with the valve core, the fourth bearing and the third gasket with the valve body assembly comprises the steps of assembling the fourth bearing with the valve body, enabling at least part of the fourth bearing to be located in a hole of the valve body, placing the third gasket on the end face of the fourth bearing, assembling the valve rod with the valve body, enabling the fourth bearing to be sleeved on the radial periphery of the valve rod, enabling the third gasket to be sleeved on the radial periphery of the valve rod and located between the valve rod and the fourth bearing, and enabling the valve rod to be connected with the valve core through plug connection.
8. The method of claim 2 wherein the attaching of the first component to the third component comprises pressing the first component from above the third component, aligning the first communication opening of the housing with the reserved threaded bore and the retaining post of the valve body assembly, and attaching the first component to the third component by screwing in the first screw.
9. The method of claim 1, wherein assembling the stator assembly comprises integrally injection molding the claw-pole plate and the first pin as inserts to obtain a frame, winding the coil winding around the frame, and connecting the stator housing with the frame.

Description

Manufacturing method of electric valve Technical Field The present invention relates to a method for manufacturing an electric valve. Background The electric valve can be used in a thermal management system, and the electric valve comprises a control part, a stator assembly, a rotor assembly, a transmission assembly, a valve body assembly and the like, so that how to optimize the manufacturing method of the electric ball valve to reduce the production cost and the maintenance cost is a technical problem. Disclosure of Invention The invention aims to provide a manufacturing method of an electric valve, which is beneficial to optimizing the assembly process and reducing the production cost and the maintenance cost. In order to achieve the above purpose, the invention adopts the following technical scheme: A method of manufacturing an electrically operated valve, comprising the steps of: The assembly of the first component comprises that the assembled stator component is pressed into the shell of the control part, the stator component and the shell are connected into a whole through threaded connection, the circuit board is arranged in the shell and is in compression joint with the contact pin of the shell and the contact pin of the stator component, the circuit board is connected with the shell through threaded connection, and the upper cover is in sealing connection with the shell. In the manufacturing method of the technical scheme, the stator assembly of the first part is detachably connected with the shell, the circuit board is detachably connected with the shell, and the circuit board is convenient to detach during maintenance, so that the assembly process is optimized, and the production cost and the maintenance cost are reduced. Drawings FIG. 1 is a schematic perspective view of one embodiment of an electrically operated valve; FIG. 2 is a schematic cross-sectional view of FIG. 1; FIG. 3 is a schematic cross-sectional view of the control device of FIG. 2; FIG. 4 is a schematic cross-sectional view of a control portion of the control device of FIG. 2, a stator assembly; FIG. 5 is an exploded view of the control and stator assembly of FIG. 4; FIG. 6 is a schematic view of an angular perspective of the housing of the control of FIG. 5; FIG. 7 is a schematic view of another angular perspective of the housing of the control of FIG. 5; FIG. 8 is a schematic perspective view of the stator assembly of FIG. 5; FIG. 9 is an exploded view of the stator assembly of FIG. 8; FIG. 10 is an exploded view of the framework of FIG. 9; FIG. 11 is a schematic elevational structural view of a stator assembly and circuit board combination; FIG. 12 is a schematic cross-sectional view of FIG. 11 taken along the direction A-A; FIG. 13 is another cross-sectional schematic view of a rotor assembly, a transmission component of the control device of FIG. 2; FIG. 14 is a schematic perspective view of an angle of the rotor, connecting bracket and sun gear; FIG. 15 is a schematic view of a perspective view of another angle of the rotor, connecting bracket and sun gear; FIG. 16 is a schematic perspective view of the stator gear of FIG. 13; FIG. 17 is an exploded view of the first planetary gear assembly of FIG. 13; FIG. 18 is a schematic view of an angled perspective of the planet carrier of the first planetary assembly of FIG. 17; FIG. 19 is an exploded view of the output stage planetary gear assembly and output shaft of FIG. 13; fig. 20 is a schematic perspective view of an angle of the output stage planet carrier and output shaft of the output stage planetary assembly of fig. 19. Detailed Description The invention is further described with reference to the drawings and the specific embodiments below: Referring to fig. 1 to 4, for one embodiment of the electric valve of the present invention, the electric valve may be applied to a thermal management system of a vehicle, and the electric valve may include an electric ball valve, an electronic expansion valve, and the like, and in this embodiment, the electric valve is specifically an electric ball valve. The electric ball valve 1 comprises a control device 2, a valve core, in this embodiment, a valve core ball 3, and the valve body assembly 4 comprises a valve body 41, wherein the valve core ball 3 is accommodated in an inner cavity formed by the valve body 41, and the control device 2 is fixedly connected with the valve body 41. The control device 2 includes a driving section, a transmission member 23, and a control section 24. In this embodiment, the driving part includes a rotor assembly 21 and a stator assembly 22, but the driving part may be other forms for outputting torque to the transmission part, the stator assembly 22 is located at the periphery of the rotor assembly 21, the stator assembly 22 has a first accommodating cavity 229, and at least part of the rotor assembly 21 is located in the first accommodating cavity 229. The rotor assembly 21 has a transmission member recei