WO2020143511A1

WO2020143511A1 - Valve, electronic valve, and motor fixing structure for electronic valve

Info

Publication number: WO2020143511A1
Application number: PCT/CN2019/130793
Authority: WO
Inventors: 马俊
Original assignee: 浙江银轮机械股份有限公司
Priority date: 2019-01-07
Filing date: 2019-12-31
Publication date: 2020-07-16

Abstract

A valve, comprising: a housing (100), and a power unit (200) and a valve core (930) mounted in the housing (100). The valve further comprises a driving magnetic element (400) connected on the power unit (200) and a driven magnetic element (500) connected on the valve core (930); the driving magnetic element (400) has a driving magnetic surface; the extension direction of the driving magnetic surface is perpendicular to the axial direction of an output shaft (210) of the power unit (200); the driven magnetic element (500) has a driven magnetic surface (530); the driving magnetic surface is opposite to the driven magnetic surface (530), so as to transfer power generated by the power unit (200) to the valve core (930) by means of the magnetic action between the driving magnetic element (400) and the driven magnetic element (500).

Description

Valve, electronic valve and motor fixing structure of electronic valve

Cross-reference of related applications

This application requires the priority of the Chinese patent application with the application number 201910425113.9 and the name "valve" submitted to the Chinese Patent Office on May 21, 2019; the application number is 201910016607.1 submitted to the Chinese Patent Office on January 08, 2019 1. The priority of the Chinese patent application named "an electronic valve"; the Chinese patent with the application number 201910013344.9 and the electric motor fixing structure of an electronic valve submitted to the Chinese Patent Office on January 7, 2019 Application priority.

Technical field

This application relates to the technical field of valves. Further, this application relates to the technical field of new energy vehicles, in particular to the field of electronic valve products used in thermal management systems of new energy vehicles, specifically a valve, an electronic valve, and an electric motor for an electronic valve Fixed structure.

Background technique

Electronic valve products generally include two accessories, a flow control device and a power device. The flow control device includes a valve core for controlling the flow direction and flow of the fluid medium, so the flow control device generally needs to be installed in a liquid medium environment, and the power device generally includes a motor The original electric components such as the control board need to be installed in a dry environment. At present, in order to not only realize the power transmission of the power device to the flow control device, but also prevent the liquid medium from leaking when the power device and the flow control device are connected, a magnetic coupling is generally used to connect the power device and the flow control device to achieve power transmission At the same time, the static seal is achieved, which better avoids the problem of liquid medium leakage. However, most of the magnetic couplings currently used are in the form of putting two magnets together, that is, a cylindrical magnet is put on a cylindrical magnet, and the magnetic force of the two magnets is generated by the cylindrical Between the arc-shaped outer wall of the magnet and the arc-shaped inner wall of the cylindrical magnet, this type of installation requires high coaxiality between the two magnets, high assembly accuracy requirements, and reduced assembly efficiency.

Application content

The present application provides a valve, which can at least solve one of the technical problems of low assembly efficiency due to high coaxiality requirements and high assembly precision requirements of the two valves during assembly.

The present application provides a valve, including: a housing, and a power unit and a valve core installed in the housing, the valve further includes an active magnetic member connected to the power unit and connected to the valve core Passive magnetic parts on the

The active magnetic force component has an active magnetic force surface, and the extending direction of the active magnetic force surface is perpendicular to the axial direction of the output shaft of the power unit. The passive magnetic force component has a passive magnetic force surface, and the active magnetic force surface and the passive magnetic force The surfaces are oppositely arranged to transmit the power generated by the power unit to the valve core through the magnetic force between the active magnetic member and the passive magnetic member.

Optionally, the active magnetic force surface and the passive magnetic force surface are both flat, and the active magnetic force surface is parallel to the passive magnetic force surface.

The beneficial effects of the technical solution include at least: relative to making the active magnetic force surface and the passive magnetic force surface arc-shaped or other non-planar forms, designing the active magnetic force surface and the passive magnetic force surface into two parallel planes can be used to form The space required for the active magnetic force surface and the passive magnetic force surface is minimized, thereby reducing the space occupied by the active magnetic force component and the passive magnetic force component respectively; and, the active magnetic force surface and the passive magnetic force surface can be increased as close as possible to increase the active The magnetic force between the magnetic part and the passive magnetic part reduces the space occupied by the active magnetic part and the passive magnetic part and the distance between the two, providing a mounting position for other parts in the valve, so that each part can be more The compact and reasonable layout reduces the volume of the valve.

Optionally, the active magnetic member and the passive magnetic member have the same size.

The beneficial effects of the technical solution include at least: in this way, the active magnetic member and the passive magnetic member can be formed using the same mold, without having to provide different specifications of molds for two different specifications of magnetic components, thereby reducing production costs, Save the production process.

Optionally, the active magnetic member and the passive magnetic member are both circular members, and the circular member includes a plurality of sector-shaped magnetic blocks distributed in the circumferential direction of the circular member and connected in sequence.

Optionally, the number of the sector magnetic blocks is greater than or equal to four.

Optionally, the active magnetic member and the passive magnetic member are both ring members.

The beneficial effects of the technical solution include at least: This allows the active magnetic member and the passive magnetic member to be respectively fitted on the corresponding mounting shaft when installing the active magnetic member and the passive magnetic member, which is convenient for installation and improves the assembly efficiency; in addition, Compared with designing the active magnetic member and the passive magnetic member into a disc shape or other circular structures, designing the two into a ring shape can reduce the materials used for the active magnetic member and the passive magnetic member, and further reduce production costs.

Optionally, a first accommodating cavity and a second accommodating cavity are formed in the housing, the power unit and the active magnetic member are installed in the first accommodating cavity, the valve core and the passive magnetic member Installed in the second accommodating cavity, the housing includes a partition that separates the first accommodating cavity and the second accommodating cavity, and the extension direction of the partition is perpendicular to the output shaft of the power unit .

The beneficial effects of the technical solution include at least: since the active magnetic force surface and the passive magnetic force surface are arranged oppositely, the active magnetic member and the passive magnetic member can be separated only by forming the partition into a structure such as a thin plate or a sheet , Reduces the volume and space occupied by the partition, and can make the active magnetic member and the passive magnetic member as close to the partition as possible, so as to reduce the distance between the active magnetic member and the passive magnetic member, and thus the active magnetic member and the magnetic member A sufficiently large magnetic force can be generated between passive magnetic members.

Optionally, a first anti-wear boss for separating the partition and the active magnetic member is formed on the active magnetic member.

The beneficial effects of this technical solution include at least: In order to generate a sufficiently large magnetic force between the active magnetic member and the passive magnetic member, the active magnetic force surface needs to be placed as close as possible to the partition, in order to make the active magnetic member difficult to cause during movement Contact with the separator produces wear to prolong the service life of the active magnetic member, so that the active magnetic member and the separator are separated, and by using the first anti-wear boss in the collision between the active magnetic member and the separator may occur Blocking, can better avoid possible contact between the active magnetic member and the separator.

Optionally, includes a gear train assembly installed in the housing, the gear train assembly includes a first-stage transmission member that directly receives power generated by the power unit, and the passive magnetic member is installed at the first stage Transmission parts.

The beneficial effects of the technical solution include at least: among the transmission members of the gear train assembly, the torque required to move the first-stage transmission member is minimized, so the passive magnetic member is installed on the first-stage transmission member to enable the active magnetic force The magnetic force generated between the component and the passive magnetic component is sufficient to realize the synchronous movement of the first-stage transmission component driven by the power unit, thereby ensuring the continuous synchronous motion of the active magnetic component and the passive magnetic component.

Optionally, a mounting seat is provided in the housing, and the gear train assembly includes an Nth-stage transmission member, and the Nth-stage transmission member is installed on the installation seat to attach the Nth-stage transmission member Isolated from the housing, the N is a natural number.

The beneficial effects of this technical solution include at least: installing the Nth-stage transmission member through the mounting seat, there is no need to make holes in the wall of the casing for the installation of the Nth-stage transmission member, thereby avoiding the holes in the wall of the casing The wall of the housing becomes thinner, or the medium leaks at the opening.

Optionally, the Nth-stage transmission member is a first-stage transmission member, and a second anti-wear boss is formed on the passive magnetic member to separate the mounting seat and the passive magnetic member.

The beneficial effects of the technical solution include at least: the provision of the second anti-wear boss can prevent the passive magnetic member from colliding with the mounting seat during the movement, thereby reducing the possibility of passive magnetic member wear and prolonging the passive The service life of magnetic parts.

Optionally, the gear train assembly includes a final-stage transmission member connected to the valve core, and the final-stage transmission member and the valve core are integrally formed as a valve core unit.

The beneficial effects of the technical solution include at least: not only saving the assembly process of the valve, but also manufacturing the valve core unit as an integrated structure at the same time when manufacturing the valve core, and also saving the manufacturing process.

Optionally, a dustproof part is formed on the valve core unit, a communication channel is formed in the housing, and the dustproof part is located in the communication channel.

The beneficial effects of the technical solution include at least: through the setting of the dustproof portion on the valve core unit, the dust in the medium can be reduced or even prevented from entering the gear train assembly from the communication channel, thereby avoiding the transmission effect of the dust on the gear train assembly as much as possible And adversely affect the service life.

Optionally, the last-stage transmission member is a sector gear.

The beneficial effects of this technical solution include at least: making the final-stage transmission member a sector gear, which not only can ensure the effective transmission of power, but also reduces the gear material and saves costs, and because the sector gear is relatively small, it is The other components in the valve save installation space, make the arrangement of the components in the valve more compact and reasonable, and then reduce the space occupied by the valve.

The beneficial effects of the technical solution provided by the present application include at least: the valve provided by the present application realizes the power transmission between the power unit and the valve core through the magnetic force between the active magnetic force surface and the passive magnetic force surface, and only requires the active magnetic force during assembly The face-to-face and passive magnetic force can be arranged face-to-face and generate sufficient magnetic force to realize power transmission. Since the coaxiality between the active magnetic member and the passive magnetic member is low, assembly efficiency can be improved.

The additional technical features and advantages of the present application will be more clearly described in the following description, or can be understood through the specific practice of the present application.

This application is to solve the technical problems in the prior art, and aims to provide an improved electronic valve, which can at least one of the technical effects of improving the overall performance of the product through the laser welding process.

In order to solve the above technical problems, the present application adopts the following technical solutions: an electronic valve including a valve body, an upper end cover and a lower end cover, the upper part of the valve body is connected to the upper end cover, and the lower part of the valve body is connected to the lower end cover, The upper end cover and/or the lower end cover are fixed to the valve body by laser welding; and of the two components welded by laser, one of the components is made of a light-transmitting material, and the other component is made of a light-absorbing material.

In an electronic valve of the present application, the end cover is connected to the valve body by laser welding. Since laser welding is welding in a pressureless state, there will be no common phenomena such as scratches, cracks or cracks on the surface of the product, and the product is qualified. High rate and good sealing performance; at the same time, no welding slag is generated during the welding process, the appearance of the product is good, and the size of the product can be guaranteed.

The upper end cover and the lower end cover can be fixed to the valve body by laser welding, and the other components are still connected by ultrasonic welding or fasteners. Preferably, both the upper end cover and the lower end cover are fixed to the valve body by laser welding.

Optionally, the inner surface of the upper end cover is bonded to the upper end surface of the valve body, and the bonded portion is a laser welding surface.

Optionally, the upper end surface of the valve body has outward flanges, which can increase the contact area between the valve body and the upper end cover, which is beneficial to positioning and increase the welding area.

Optionally, the inner surface of the lower end cover is bonded to the lower end surface of the valve body, and the bonded portion is a laser welding surface.

Optionally, the lower end surface of the valve body has an outward flange, which can increase the contact area between the valve body and the lower end cover, which is beneficial to positioning and increase the welding area.

Optionally, the positioning between the upper portion of the valve body and the upper end cover is achieved through cooperation of a pair of positioning pin shafts and positioning shaft holes.

Optionally, among the pair of positioning pin shafts, one of the positioning pin shafts is circular and the other is elliptical, and the pair of positioning shaft holes are circular holes with a diameter slightly larger than the pin shaft, which can avoid over-positioning.

Optionally, the valve body uses a light-absorbing material, and the upper end cover and the lower end cover use a light-transmitting material.

Optionally, the valve body uses PA (Polyamide, polyamide) plastic, PPA (Polyphthalamide) plastic, or PPS (Polyphenylene Sulfide) plastic.

Optionally, the upper end cover and the lower end cover are made of PA9T plastic, and a light-transmitting carrier is added, and the light transmittance is greater than 20%. Preferably, the light transmittance of the end cover material is 50%-60%.

Optionally, the valve body and the end cover are made of the same material, and a light-transmitting carrier is added to the end cover material to make it have a certain light transmittance to meet the requirements of laser welding. Since the two parts of laser welding have the same material, the closer the melting point, the stronger the welding strength.

Optionally, the laser welding is heat conduction welding or laser deep welding.

Among them, the principle of thermal conduction laser welding is: laser radiation heats the surface to be processed, and the surface heat diffuses to the inside through thermal conduction. By controlling the laser parameters such as the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool .

Laser deep penetration welding generally uses continuous laser beams to complete the material connection, and its energy conversion mechanism is completed through the "small hole" structure. Under sufficiently high power density laser irradiation, the material evaporates and forms small holes. This small hole filled with steam is like a black body, absorbing almost all the energy of the incident beam. The equilibrium temperature in the cavity is about 2500C. Heat is transferred from the outer wall of the high-temperature cavity, melting the plastic surrounding the cavity. The small holes are filled with high-temperature steam generated by the continuous evaporation of the wall material under the beam of light. The four walls of the small holes are surrounded by molten plastic and the liquid plastic is surrounded by solid materials. (In most conventional welding processes and laser conduction welding, the energy is first (Deposited on the surface of the workpiece, then transported to the inside by transfer). The liquid flow outside the hole wall and the surface tension of the wall layer are consistent with the steam pressure continuously generated in the hole cavity and maintain a dynamic balance. The light beam continuously enters the small hole, and the material outside the small hole is continuously flowing. As the light beam moves, the small hole is always in a stable state of flow. In other words, the small hole and the molten plastic surrounding the hole wall move forward with the speed of the leading beam. The molten plastic fills the gap left by the small hole and condenses, and the weld is formed.

This application is to solve the technical problems existing in the prior art, and aims to provide a motor fixing structure of an electronic valve. The present application adopts the following technical solution: A motor fixing structure of an electronic valve includes an upper portion of a valve body and an upper end cover. The upper portion of the valve body and the upper end cover are provided with at least a first motor fixing mechanism and a second motor fixing mechanism. The axes of the first motor and the second motor coincide later.

The electric valve motor fixing structure of the present application, a set of electronic valve body structure can be suitable for the fixing and installation of at least two motors, which can greatly save the cost of mold opening and the development cycle. Among them, the two motors can be different types of motors, such as stepper motors and DC motors; they can also be two different types of motors of the same type, which can be flexibly adjusted according to the design and use needs. At the same time, the present application is not limited to the fixation of two motors, but can also be applied to the fixation of multiple motors, as long as the fixation mechanism of each motor does not interfere with the installation of other motors.

This application is applicable to motors of any shape and structure. The conventional electronic valve drive motors are stepper motor drives and DC motors. Usually the stepper motor is a circular junction, its length is less than the length of the DC motor, and the diameter is greater than the width of the current motor; the DC motor is mainly square or square-like structure, its bottom and top are flat, the side is flat or arc surface .

The fixing structure of each motor includes a front and rear end surface fixing device, a fuselage fixing device and a bearing fixing device. The motor is interference fit with the front and rear end surface fixing devices; the motor and the body fixing device and the bearing fixing device can be interference fit, or can also be gap fit, for self-adjusting the position of the motor shaft. The bearing fixing device can position the front and rear bearings of the motor at the same time, or can only position the front or rear bearings. For a motor with a circular structure, it is best to provide an anti-rotation device to prevent the motor from rotating during use.

The first motor has a circular structure as an example. The first motor fixing mechanism includes a front and rear end surface fixing device, a fuselage fixing device, a bearing fixing device and an anti-rotation device. The front and rear end surface fixing device and the The first motor has an interference fit.

The front and rear end surface fixing device of the first motor fixing mechanism includes a front end limiting surface and a rear end limiting surface provided on the upper portion of the valve body and/or the upper end cover. Further, the front end limiting surface is also provided with a slanted rib position, so that the motor can be introduced along the slanted rib position until the inlay is in place to form an interference fit.

The body fixing device of the first motor fixing mechanism includes a positioning point, a positioning line or a positioning surface matched with the first motor body, and the positioning point, the positioning line or the positioning surface is provided on a corresponding positioning member On the upper part of the valve body and/or the upper end cover.

The positioning members include but are not limited to positioning blocks, positioning bars, positioning columns, claws or similar structures, the number of which is 1 to more, and can be flexibly set according to the structure and position of the positioning members.

Optionally, the positioning member has a profiling groove adapted to the shape of the body of the first motor. The radius of the profiling groove is equal to or slightly larger than the radius of the first motor.

The bearing fixing device of the first motor fixing mechanism includes a bearing positioning groove provided on the upper part of the valve body and the upper end cover.

There may be two bearing positioning grooves, which are respectively matched with the front and rear bearings of the first motor. Preferably, there is one bearing positioning groove, which is matched with the front bearing of the first motor. The first motor is reliably fixed on the upper part of the valve body and the upper end cover through the positioning device of the body and the front bearing. The space at the rear end of the first motor can be used to install the second motor.

The radius of the bearing positioning groove is equal to or slightly larger than the radius of the front bearing of the first motor.

The anti-rotation device of the first motor fixing mechanism includes a front mounting panel provided at the front end of the motor, the front mounting panel is provided with at least one lug, and the upper part of the valve body and/or the upper end cover are provided with Describe the slot where the lugs fit.

The second motor takes a square structure or a square-like structure as an example, and has at least a bottom plane and a top plane. The second motor fixing mechanism includes a front and rear surface fixing device, a body fixing device, and a bearing fixing device. The front and rear end surface fixing devices are interference fit with the second motor.

The front and rear end surface fixing device of the second motor fixing mechanism includes a front end positioning surface and a rear end positioning surface provided on the upper portion of the valve body and/or the upper end cover. The front end positioning surface is also provided with a slanted rib position, so that the motor can be introduced along the slanted rib position until the inlay is in place to form an interference fit.

Optionally, the first motor fixing mechanism and the second motor fixing mechanism share the same front end positioning surface. On the one hand, it can save space, simplify the structure, and avoid interference with the positioning surfaces of other motors when different motors are installed; on the other hand, it can ensure that the axes of different motors coincide.

The body fixing device of the second motor fixing mechanism includes a positioning point, a positioning line or a positioning surface matched with the second motor body, and the positioning point, the positioning line or the positioning surface is provided on a corresponding positioning member On the upper part of the valve body and/or the upper end cover. The positioning member includes, but is not limited to, a positioning block, a positioning bar, a positioning column or a jaw, and the number is 1 to multiple.

The bearing fixing device of the second motor fixing mechanism includes a bearing positioning groove provided on the upper part of the valve body and the upper end cover.

There may be two bearing positioning grooves, which are respectively matched with the front and rear bearings of the second motor. Preferably, there is one bearing positioning groove, which is matched with the rear bearing of the second motor. The second motor is reliably fixed on the upper portion of the valve body and the upper end cover by the positioning device of the body and the rear bearing. The space left at the front end of the second motor can be used to install the first motor.

Optionally, the first motor has a circular structure, a front mounting panel is provided on the front end of the first motor, and a pair of lugs are symmetrically provided on the front mounting panel; on the upper part of the valve body And the upper end cover are provided with a front end positioning surface, a first motor rear end positioning surface, a first motor body profiling groove, a first motor front bearing positioning groove and a slot matched with the lug;

The second motor has a square-like structure, with a bottom plane and a top plane, and a circular arc transition is used between the top plane and the side surfaces; a rear end positioning surface of the second motor is provided on the upper part of the valve body 1. A pair of convex strips matching the bottom of the second motor body and a positioning groove for the rear bearing of the second motor; the upper end cover is provided with a positioning surface of the rear end of the second motor and a pair of circles with the second motor body Claws matching the arc transition surface and the positioning groove of the rear bearing of the second motor;

The front end positioning surface on the upper part of the valve body and the upper end cover serves as the common positioning surface of the first motor and the second motor, and there is also a slanted rib on it to form an interference fit between the front and the rear.

The second motor has a square-like structure, and has a bottom plane and a top plane; on the upper part of the valve body, a rear motor positioning surface, a boss matching the bottom of the second motor body and a first Two motor rear bearing positioning grooves; the upper end cover is provided with a second motor rear end positioning surface, a set of protrusions matching the top surface of the second motor body, and a second motor rear bearing positioning groove;

The motor fixing structure is made of plastic parts. The elasticity of the plastic parts allows the motor to form good contact and fit with the fixed structure.

BRIEF DESCRIPTION

In order to more clearly explain the technical solution of the specific implementation manner of the present application, the drawings needed to be used in the description of the specific implementation will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without paying any creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic view of the internal structure from a perspective of an embodiment of a valve provided by an example of the present application;

FIG. 2 is a partially enlarged schematic view at A in FIG. 1;

3 is a three-dimensional structural schematic diagram of an implementation manner of a passive magnetic member provided by an embodiment of the present application;

4 is a schematic view of the internal structure of another embodiment of the valve according to an embodiment of the present application from another perspective;

5 is a schematic perspective structural view of an implementation manner of a valve core unit provided by an example of the present application;

6 is a schematic structural diagram of an upper end cover of an electronic valve provided by an embodiment of the present application;

7 is a cross-sectional view along A-A direction of FIG. 6;

8 is a schematic structural diagram of a lower end cover of an electronic valve provided by an embodiment of the present application;

9 is a cross-sectional view of FIG. 8 along B-B;

10 is a schematic structural diagram of a valve body of an electronic valve provided by an embodiment of the present application;

11 is a schematic diagram of an electronic valve laser welding process of an electronic valve provided by an embodiment of the present application;

12 is a structural schematic diagram of a stepping motor of a motor fixing structure of an electronic valve provided by an embodiment of the present application;

13 is a schematic structural diagram of a valve body of a motor fixing structure of an electronic valve provided by an embodiment of the present application;

14 is a schematic structural diagram of a motor fixing mechanism portion at an upper portion of a valve body of an electronic valve motor fixing structure provided by an embodiment of the present application;

15 is a schematic structural view of another part of the motor fixing mechanism portion of the upper portion of the valve body of the motor fixing structure of the electronic valve provided by the embodiment of the present application;

16 is a front end schematic diagram of a stepping motor of a motor fixing structure of an electronic valve provided in an embodiment of the present application and a motor fixing mechanism at an upper portion of a valve body;

17 is a schematic diagram of a rear end surface of a stepping motor of a motor fixing structure of an electronic valve provided in an embodiment of the present application and a motor fixing mechanism at an upper portion of a valve body;

18 is a schematic structural diagram of an upper end cover of a motor fixing structure of an electronic valve provided by an embodiment of the present application;

19 is a schematic structural diagram of a motor fixing mechanism portion of an upper end cover of a motor fixing structure of an electronic valve provided by an embodiment of the present application;

20 is a schematic diagram of a stepping motor of a motor fixing structure of an electronic valve provided in an embodiment of the present application and a motor fixing mechanism of an upper end cover;

21 is a side view of the stepping motor of the motor fixing structure of the electronic valve provided in the embodiment of FIG. 20 and the motor fixing mechanism of the upper end cover;

22 is a schematic diagram of the installation and fixing of the DC motor of the electronic valve motor fixing structure provided by the embodiment of the present application;

23 is a schematic diagram of the installation and fixing of the front end of the DC motor and the upper part of the valve body of the electronic valve motor fixing structure provided by the embodiment of the present application;

24 is a schematic diagram of the installation and fixing of the rear end of the DC motor and the upper part of the valve body of the motor fixing structure of the electronic valve provided by the embodiment of the present application;

FIG. 25 is a schematic structural view of an embodiment in which the first motor body positioning member of the electronic valve motor fixing structure provided by an embodiment of the present application uses two strips;

26 is a schematic structural view of an embodiment in which the first motor body positioning member of the electronic valve motor fixing structure provided by an embodiment of the present application adopts an integrated structure;

27 is a structural schematic diagram of another structural manner of a valve body of a motor fixing structure of an electronic valve provided by an embodiment of the present application;

28 is a schematic diagram of the assembly of the first motor and the upper part of the valve body of the electronic valve motor fixing structure provided by the embodiment of the present application;

29 is an assembly schematic diagram of the second motor and the upper portion of the valve body of the electronic valve motor fixing structure provided by an embodiment of the present application;

30 is a structural schematic diagram of another structural manner of an upper end cover of a motor fixing structure of an electronic valve provided by an embodiment of the present application;

31 is an assembly diagram of the first motor and the upper end cover of the motor fixing structure of the electronic valve provided by the embodiment of the present application;

32 is an assembly diagram of a second motor and an upper end cover of a motor fixing structure of an electronic valve provided by an embodiment of the present application.

In the picture: 100-housing; 200-power unit; 210-output shaft; 300-first accommodating cavity; 400-active magnetic member; 410-first anti-wear boss; 500-passive magnetic member; 510-second Anti-wear boss; 520-sector magnetic block; 530-passive magnetic force surface; 600-second accommodating cavity; 700-divider; 710-mounting seat; 800-gear train assembly; 810-first-stage transmission; 811- Support shaft; 812-worm; 900-spool unit; 910-last stage transmission; 920-dust-proof part; 921-dust-proof groove; 930-spool; 1-upper end cap; 2-lower end cap; 3-valve Body; 101-the inner surface of the upper end cap; 102- the welding area of the upper end cap; 103- the flange of the upper end cap; 104- the first positioning shaft hole of the upper end cap; 105- the second positioning shaft hole of the upper end cap; 106- the first positioning of the upper end cap Boss; 107-Second positioning boss of upper end cap; 201-Inner surface of lower end cap; 202- Welding area of lower end cap; 203- Runner; 204- Reinforcement; 205- Flange; 301- First positioning pin; 302-the second positioning pin; 303-the upper part of the valve body; 304-the upper end surface of the valve body; 305-the lower end surface of the valve body; 306-the upper flange of the valve body; 307-the lower flange of the valve body; 308-the upper space; 309 -Lower space; 303-upper part of valve body; 1- upper end cover; 31-first motor; 41-second motor; 51-fixed structure in upper part of valve body; 61-fixed structure in upper end cover; 331-first Front mounting panel of the motor; 332-lug on the front mounting panel; 333-lug on the front mounting panel; 334-front bearing of the first motor; 401-front bearing of the second motor; 402-rear bearing of the second motor 501-front positioning member; 502-first motor body positioning member; 503-first motor rear positioning member; 504-second motor body positioning member; 505-second motor rear positioning member; 506- Two motor rear bearing positioning parts; 507-first motor front bearing positioning part; 508-first motor front bearing positioning groove; 509-first motor body profile groove; 510-second motor body positioning surface; 511- First motor rear end positioning surface; 512-second motor rear end positioning surface; 513-second motor rear bearing positioning groove; 514-bevel rib position; 515-motor front end positioning surface; 516-slot; 517-base 601-first motor front bearing positioning groove; 602-first motor front bearing positioning member; 603-motor front positioning surface; 604-bevel rib position; 605-slot; 606-first motor body profiling groove; 607-Second motor body positioning element; 608-Second motor rear end positioning surface; 609-Second motor rear bearing positioning element; 610-Second motor rear bearing positioning groove; 611-First motor rear end positioning surface; 612-groove.

detailed description

The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

As shown in FIGS. 1-5, an aspect of the present application provides a valve including: a housing 100, and a power unit 200 and a spool 930 installed in the housing 100, and the valve further includes a power unit 200 On the active magnetic member 400 and the passive magnetic member 500 connected to the spool 930,

The active magnetic member 400 has an active magnetic surface. The extending direction of the active magnetic surface is perpendicular to the axis of the output shaft 210 of the power unit 200. The passive magnetic member 500 has a passive magnetic surface 530. The active magnetic surface and the passive magnetic surface 530 are oppositely arranged. The power generated by the power unit 200 is transmitted to the spool 930 by the magnetic force acting between the active magnetic member 400 and the passive magnetic member 500.

The active magnetic member 400 and the passive magnetic member 500 provided in the embodiments of the present application are preferably made of ruthenium boron; the power unit 200 is preferably a power device that can generate rotational power, such as an electric motor, etc. The magnetic member 400 rotates, and the magnetic force between the active magnetic member 400 and the passive magnetic member 500 drives the passive magnetic member 500 to rotate, thereby realizing the rotation of the spool 930; of course, the valve provided in the embodiment of the present application is also suitable for power The unit 200 is a power device that generates a linear driving force or other forms of driving force. The power unit 200 can drive the active magnetic member 400 to perform a linear movement by generating a linear driving force. The active magnetic member 400 passes the magnetic force between the passive magnetic member 500 The action drives the passive magnetic member 500 to produce a linear motion, which in turn drives the spool 930 to produce a linear movement. In this way, when the spool 930 and the passive magnetic member 500 are installed in a closed medium environment, the above-mentioned closed medium environment may not be destroyed, but The power transmission is realized by the magnetic force between the active magnetic member 400 and the passive magnetic member 500, thereby avoiding the problem of media leakage that may be caused due to the power transmission between the power unit 200 and the spool 930; the active magnetic member 400 and The passive magnetic member 500 is preferably arranged coaxially; the vertical in the embodiments of the present application includes absolute vertical and approximately vertical.

The valve provided in this application realizes the power transmission between the power unit 200 and the spool 930 through the magnetic force between the active magnetic force surface and the passive magnetic force surface 530. Only the active magnetic force surface and the passive magnetic force surface 530 need to be set face-to-face during assembly. It suffices to generate a magnetic force sufficient for power transmission. Since the coaxiality between the active magnetic member 400 and the passive magnetic member 500 is low, assembly efficiency can be improved.

In an embodiment of the present application, the active magnetic force surface and the passive magnetic force surface 530 are both flat, and the active magnetic force surface and the passive magnetic force surface 530 are parallel. The smaller the distance between the active magnetic force surface and the passive magnetic force surface 530, the better. In the embodiment of the present application, the distance between the active magnetic force surface and the passive magnetic force surface 530 can be selected from 2 to 4 mm, preferably 3 mm. Relative to making the active magnetic surface and the passive magnetic surface 530 arc-shaped or other non-planar forms, designing the active magnetic surface and the passive magnetic surface 530 into two parallel planes can be used to form the active magnetic surface and the passive magnetic surface The space required by 530 is minimized, thereby reducing the space occupied by the active magnetic member 400 and the passive magnetic member 500 respectively; and the active magnetic member 400 can be increased by bringing the active magnetic surface and the passive magnetic surface 530 as close as possible The magnetic force between the passive magnetic member 500 and reduce the space occupied by the active magnetic member 400 and the passive magnetic member 500 and the distance between the two provide a mounting position for other components in the valve, so that each component can A more compact and reasonable arrangement, thereby reducing the volume of the valve; of course, as long as the extension direction of the active magnetic force surface is perpendicular to the output axis of the power unit 200, the active magnetic force surface and the passive magnetic force surface 530 can also be curved, uneven Surface or other non-planar forms.

In an embodiment of the present application, the active magnetic member 400 and the passive magnetic member 500 have the same size. In this way, the active magnetic member 400 and the passive magnetic member 500 can be formed using the same mold during production, without having to provide different specifications of molds for two different types of magnetic members, thereby reducing production costs and saving the production process; FIG. 3 is a perspective schematic diagram of the passive magnetic member 500. When the active magnetic member 400 and the passive magnetic member 500 have the same size, FIG. 3 is also a perspective schematic diagram of the active magnetic member 400, and the passive magnetic force shown in the figure The surface 530 may correspondingly be an active magnetic surface.

In an embodiment of the present application, both the active magnetic member 400 and the passive magnetic member 500 are circular members, and the circular member includes a plurality of sector-shaped magnetic blocks 520 distributed in the circumferential direction of the circular member and connected in sequence.

In an embodiment of the present application, the number of sector magnetic blocks 520 is greater than or equal to four.

In an embodiment of the present application, both the active magnetic member 400 and the passive magnetic member 500 are ring members. This makes it possible to install the active magnetic member 400 and the passive magnetic member 500 on the corresponding mounting shaft when installing the active magnetic member 400 and the passive magnetic member 500, which is convenient for installation and improves the assembly efficiency; In addition, compared with the active magnetic force The member 400 and the passive magnetic member 500 are designed into a disc shape or other circular structures, and designing the two into a ring shape can reduce the materials used for the active magnetic member 400 and the passive magnetic member 500, and further reduce production costs.

Since the currently used magnetic coupling generally requires that the two magnets are located in the medium environment and outside the medium environment, in order to avoid medium leakage, it is necessary to use a spacer to separate the two magnets located in different environments. The two magnets of the coupling are generally in the form of being put together, which requires the spacer to adopt the corresponding structural form to adapt to the assembly form of the two magnets. For example, one magnet is a cylindrical magnet and the other magnet is When a cylindrical magnet is used, it is necessary to make the spacer barrel-shaped, and put the spacer outside the cylindrical magnet, and the cylindrical magnet outside the spacer to isolate the two magnets. Large, occupies a large internal space of the valve, making it difficult for other components in the valve to be reasonably arranged, which may lead to an increase in the overall volume and space occupied by the valve. For this reason, as shown in FIGS. 1 and 2, in an embodiment of the present application, a first accommodating cavity 300 and a second accommodating cavity 600 are formed in the housing 100, and the power unit 200 and the active magnetic member 400 are installed in the first In an accommodating chamber 300, the valve core 930 and the passive magnetic member 500 are installed in the second accommodating chamber 600. The housing 100 includes a partition 700 separating the first accommodating chamber 300 and the second accommodating chamber 600, and the extending direction of the partition 700 It is perpendicular to the output shaft of the power unit 200. When both the active magnetic surface and the passive magnetic surface 530 are flat, the extension direction of the partition 700 is preferably parallel to the active magnetic surface and/or the passive magnetic surface 530; the above-mentioned parallel includes the case of absolute parallel and approximately parallel; the partition 700 may be It is preferably a plate structure or a sheet structure. The partition 700 may be a hard structure, an elastic structure or a flexible structure. The first receiving cavity 300 provided in the embodiment of the present application is formed in the housing 100. The second receiving cavity 600 may be a cavity in a smaller housing within the housing 100, and the partition 700 is a part of the wall of the smaller housing; the second receiving cavity 600 may also be located in the housing 100 Outside the chamber of another casing connected to the casing 100, the partition 700 is a part that realizes the connection between the casing 100 and the other casing.

Since the active magnetic force surface and the passive magnetic force surface 530 are oppositely arranged, the active magnetic member 400 and the passive magnetic member 500 can be separated only by forming the partition 700 into a structure such as a thin plate or sheet, which reduces the volume of the partition 700 And occupy the space, and can make the active magnetic member 400 and the passive magnetic member 500 as close as possible to the partition 700, so as to reduce the distance between the active magnetic member 400 and the passive magnetic member 500, and then the active magnetic member 400 and the passive magnetic force Between pieces 500, a sufficiently large magnetic force can be generated.

As shown in FIG. 2, in an embodiment of the present application, a first anti-wear boss 410 for separating the partition 700 and the active magnetic member 400 is formed on the active magnetic member 400. In the embodiment of the present application, the first anti-wear boss 410 is preferably formed on the active magnetic force surface; in order for the active magnetic force element 400 and the passive magnetic force element 500 to generate a sufficiently large magnetic force, the active magnetic force surface needs to be as much as possible Located close to the partition 700, in order to prevent the active magnetic member 400 from wearing easily due to contact with the partition 700 during the movement, so as to prolong the service life of the active magnetic member 400, and separate the active magnetic member 400 from the partition 700, and By using the first anti-wear boss 410 to block when a collision may occur between the active magnetic member 400 and the partition 700, the contact between the active magnetic member 400 and the partition 700 may be better avoided.

As shown in FIGS. 1, 2 and 4, in an embodiment of the present application, the valve provided in the embodiment of the present application includes a gear train assembly 800 installed in the housing 100, and the gear train assembly 800 includes a power receiving unit 200 directly The first-stage transmission member 810 of the generated power and the passive magnetic member 500 are mounted on the first-stage transmission member 810. The gear train assembly 800 used in the embodiments of the present application may include gears, turbines, worms, and other transmission parts used to achieve power transmission; the gear train assembly 800 used in the embodiments of the present application is preferably a reduction gear set, and through the gear train assembly 800 increases the torque that the power unit 200 finally uses on the spool 930. Since the torque required to move the first-stage transmission member 810 among the transmission members of the gear train assembly 800 is minimized, the passive magnetic member 500 is installed on On the first-stage transmission member 810, the magnetic force generated between the active magnetic member 400 and the passive magnetic member 500 is sufficient to realize the power unit 200 to drive the first-stage transmission member 810 to move synchronously, thereby ensuring the active magnetic member 400 and the passive magnetic member 500 Continuous synchronized movement. Of course, the passive magnetic member 500 may also be installed on other transmission members in the gear train assembly 800, as long as the synchronous movement between the active magnetic member 400 and the passive magnetic member 500 can be ensured.

As shown in FIG. 2, in an embodiment of the present application, the gear train assembly 800 includes an Nth stage transmission member, and the Nth stage transmission member is installed on the mounting base 710 to connect the Nth stage transmission member with the housing 100 Isolated, N is a natural number. By installing the Nth-stage transmission member through the mounting base 710, there is no need to make holes in the wall of the casing 100 for installing the Nth-stage transmission member, thereby avoiding the wall of the casing 100 from being changed due to the opening in the wall of the casing 100 Thin, or media leakage at the opening.

In an embodiment of the present application, the N-th stage transmission member is a first-stage transmission member 810, and a second anti-wear boss 510 is formed on the passive magnetic member 500 to separate the mounting base 710 and the passive magnetic member 500. The setting of the second anti-wear boss 510 can prevent the passive magnetic member 500 from colliding with the mounting base 710 during the movement, thereby reducing the possibility of the passive magnetic member 500 wearing, and prolonging the use of the passive magnetic member 500 Lifetime; the second anti-wear boss 510 is preferably formed on the passive magnetic force surface 530; when the active magnetic member 400 and the passive magnetic member 500 have the same size, FIG. 3 of the specification can also be a three-dimensional schematic diagram of the active magnetic member 400, Correspondingly, the second anti-wear boss 510 shown in FIG. 3 represents the first anti-wear boss 410; in the embodiment of the present application, it is preferable that the first-stage transmission member 810 includes a worm 712 and a support shaft 711, the worm 712 is sleeved on the support shaft 711, and one end of the support shaft 711 penetrates the passive magnetic member 500 and is installed on the mounting base 710. The worm 712 is fixedly connected to the passive magnetic member 500.

As shown in FIG. 5, in one embodiment of the present application, the gear train assembly 800 includes a final-stage transmission member 910 connected to the valve core 930, and the final-stage transmission member 910 and the valve core 930 are integrally formed as a valve core unit 900. In existing valves that do not use magnetic couplings, the spool 930 and the gear train assembly 800 are installed in two chambers, respectively, and a spool 930 and a gear train assembly 800 are generally formed between the two chambers. Connection channel, the spool 930 and the gear train assembly 800 extend into the connection channel from both sides of the connection passage to realize the connection between the spool 930 and the gear train assembly 800, and the spool 930 is connected to the gear train assembly 800 Before, the seal must be placed between the spool 930 and the gear train assembly 800. After the spool 930 and the gear train assembly 800 are connected, the seal is fixed and the connection channel is sealed to avoid the medium in the two chambers Flow between. With the valve provided in the embodiment of the present application, since the power unit 200 and the spool 930 are respectively located in two mutually sealed chambers, the medium will not affect the power unit 200, so that the gear train assembly 800 and the spool 930 Located in the same chamber, the aforementioned connection channel does not need to be sealed, so that there is no need to use a traditional connection between the spool 930 and the gear train assembly 800 for installing the seal, and the last-stage transmission member of the gear train assembly 800 can be used 910 and the spool 930 are integrally formed into the spool unit 900 and then directly installed in the housing 100, not only saving the valve assembly process, but also the spool unit 900 can be manufactured as an integrated structure at the same time when manufacturing the spool 930, Save the manufacturing process.

In an embodiment of the present application, a dustproof portion 920 is formed on the valve core unit 900, a communication passage is formed in the housing 100, and the dustproof portion 920 is located in the communication passage. The dustproof portion 920 provided by the embodiment of the present application is preferably an annular structure formed on the valve core 930 and protruding in the radial direction of the valve core 930. The annular structure is arranged coaxially with the valve core 930, preferably in the annular structure A dust-proof groove 921 is formed on the outer edge of the valve. Of course, the dust-proof groove 921 may not be provided, but close to the ring structure itself to shield dust; by setting the dust-proof portion 920 on the spool unit 900, the dust in the medium can be reduced or even avoided Enter the gear train assembly 800 from the communication channel, and avoid as much as possible the dust on the transmission effect and service life of the gear train assembly 800; when the dustproof groove 921 is formed on the dustproof portion 920, the dustproof groove 921 can be passed Accommodating the dust that enters between the dustproof portion 920 and the inner wall of the connection channel is equivalent to adding a dustproof barrier to the dustproof portion 920 to more effectively prevent the dust from entering the gear train assembly 800 from the medium.

In an embodiment of the present application, the final transmission element 910 is a sector gear. In the process of using the spool 930, to realize the switch of the valve may only require the spool 930 to rotate within a certain angle range. Correspondingly, the final transmission member 910 only needs to realize the function of transmitting power within this angle range, so that the end The stage transmission part 910 is a sector gear, which not only can ensure the effective transmission of power, but also reduces the material used for the gear, saving costs, and because the sector gear is relatively small, it saves installation space for other components in the valve. Make the arrangement of various components in the valve more compact and reasonable, and then reduce the space occupied by the valve.

The electronic valve provided by the present application belongs to the electronic valve product in the valve. Specifically, referring to FIGS. 1 to 6, an electronic valve of the present application includes a valve body assembly, a flow control device, and a power device. The valve body assembly includes a valve body 3, an upper end cover 1, a lower end cover 2, and a connecting pipe; the upper part 303 of the valve body is connected to the upper end cover 1, and the lower part 310 of the valve body is connected to the lower end cover 2 and the connecting pipe. The power device includes a gear train, a motor and a control board, and is placed in a space 308 formed by the upper end cover 1 and the upper portion 303 of the valve body. The flow control device includes a valve core, and is placed in a space 309 formed by the lower end cover 2 and the lower portion 310 of the valve body.

1 and 2 are schematic structural diagrams of the upper end cover 1 of the present application. The upper end cover 1 has flanges 103 around it, so as to better cooperate with the upper end periphery of the valve body 3. The upper end cover 1 has an inner surface 101. A circle of the inner surface 101 close to the flange 103 is a welding area 102. The welding area 102 is attached to the upper end surface 304 of the valve body 3.

A first positioning shaft hole 104 and a second positioning shaft hole 105 are also provided in the upper end cover. The first positioning shaft hole 104 and the second positioning shaft hole 105 are respectively opened in the first positioning boss 106 and the second positioning boss Taiwan 107. The first positioning boss 106 and the second positioning boss 107 are preferably separated by a certain distance. The larger the distance, the better the positioning performance.

3 and 4 are schematic structural diagrams of the lower end cover 2 of the present application. The lower end cover 2 has flanges 205 around it, so as to better fit the periphery of the lower end of the valve body 3. A flow channel 203 is provided in the center of the lower end cover 2. The lower end cover 2 has an inner surface 201. A circle of the inner surface 201 close to the flange 205 is a welding area 202. The welding area 202 is attached to the lower end surface 305 of the valve body 3. A set of radially distributed reinforcing ribs 204 is also provided between the welding area 202 and the runner 203.

FIG. 5 is a schematic structural diagram of the valve body 3 of the present application. The valve body 3 includes an upper valve body 303 and a lower valve body 310.

The upper part 303 of the valve body has an upper space 308 for accommodating the power device. The upper end surface 304 of the upper portion 303 of the valve body has an outward flange 306, which can increase the contact area between the valve body and the upper end cover, which is beneficial to positioning and increase the welding area. The upper end surface 304 and the flange 306 on the upper part of the valve body are in contact with the welding area 102 on the inner surface of the upper end cover. The upper portion 303 of the valve body is further provided with a first positioning pin 301 and a second positioning pin 302. The first positioning pin shaft 301 and the second positioning pin shaft 302 cooperate with the first positioning shaft hole 104 and the second positioning shaft hole 105 of the upper end cover respectively to realize the positioning of the upper portion 303 of the valve body and the upper end cover 1.

Preferably, among the first positioning pin shaft 301 and the second positioning pin shaft 302, one of the positioning pin shafts is circular and the other is oval, and the first positioning shaft hole 104 of the upper end cover matched therewith The second positioning shaft hole 105 is a circular hole with a diameter slightly larger than the pin shaft to avoid over-positioning.

The lower part 310 of the valve body has a lower space 309 for accommodating the flow control device. The lower end surface 305 of the lower portion 310 of the valve body has an outward flange 307, which can increase the contact area between the valve body and the lower end cover, which is beneficial to positioning and increase the welding area. The lower end surface 305 and the flange 307 are bonded to the welding area 202 on the inner surface of the lower end cover.

The electronic valve of this application is assembled according to the method:

1. Place the power device in the upper space 308 of the valve body, and then cover the upper cover 1 on the end of the upper portion 303 of the valve body, so that the welding area 102 on the inner surface of the upper cover and the upper end surface 304 of the upper portion 303 of the valve body fit;

2. Using laser welding, fix the upper cover 1 on the upper part 303 of the valve body;

3. Place the flow control device in the lower space 309 of the valve body, and then cover the lower cover plate 2 at the end of the lower portion 310 of the valve body so that the welding area 202 on the inner surface of the lower cover plate and the lower end surface of the lower portion 310 of the valve body 305 fit;

4. Laser welding is used to fix the lower cover plate 2 to the lower part 310 of the valve body.

In order to ensure that the laser can pass through one component and reach the interface of another component, of the two components welded by laser, one component uses light-transmitting materials and the other component uses light-absorbing materials. In this embodiment, the valve body 3 uses a light-absorbing material, and the upper end cover 1 and the lower end cover use a light-transmitting material.

Preferably, the valve body 3 is made of PA plastic, PPA plastic or PPS plastic. These materials can replace metal materials, have good comprehensive properties, including mechanical properties, heat resistance, abrasion resistance, chemical resistance, flame retardancy, mold release, no need to add a mold release agent, and easy to process , Suitable for modification, etc.

The upper end cover and the lower end cover are made of PA9T plastic, and a light-transmitting carrier is added, and the light transmittance is greater than 20%. If the material has high light transmittance, the thickness of the end cap can be increased. Conversely, if the light transmittance of the material is low, the thickness of the end cap should not be too large. Comprehensively considering the strength and light transmittance of the end cap, and taking into account the economy, the light transmittance of the end cap material is preferably 50% to 60%, and the thickness is in the range of 2mm ± 0.2mm. The power of laser welding is about 150 watts.

In a more optimized embodiment, the valve body 3 and the upper and lower end covers 1 and 2 are made of PA9T plastic, and the models used for the two can be different. PA9T plastic itself is a light-absorbing material and can be directly used in the manufacture of the valve body 3. The PA9T plastic used for the upper and

lower end caps

1 and 2 is added with a light-transmitting carrier to make it have certain light transmittance and meet the requirements of laser welding. Because the two parts of the laser welding have the same material and the melting point is around 300℃, the welding strength can be greatly improved. And the high density characteristics of PA9T plastic can also improve the welding strength.

An electronic valve of the present application has the following beneficial effects: the end cover is connected to the valve body by laser welding, and because the laser welding is welding in a pressureless state, no scratches, cracks or cracks on the surface of the product will occur Common phenomenon, high product qualification rate and good sealing performance; at the same time, no welding slag is generated during the welding process, the appearance of the product is good, and the size of the product can be guaranteed.

For the sake of brief description, for the points not mentioned in this embodiment, reference may be made to the above embodiments. The motor valve fixing structure of the electronic valve provided in this embodiment is directed to the motor fixing structure of the electronic valve in the above embodiments; FIGS. 1-12 are a typical implementation of a motor fixing structure of an electronic valve of the present application Schematic. In this embodiment, the first motor 3 is a stepper motor, and the second motor is a DC motor. The two motors are alternately placed in the motor fixing mechanism in the upper part 1 of the valve body and the upper end cover 2. After the upper end cover is fixed to the upper part of the valve body, the motor is reliably fixed.

Referring to FIG. 1, the stepping motor 3 has a circular structure. To better fix the stepping motor 3, a front mounting panel 301 is provided at the front end. A pair of

lugs

302 and 303 are symmetrically arranged on the front mounting panel.

Referring to FIG. 2, an electric valve motor fixing structure of the present application includes a fixing structure 5 provided in the upper part of the valve body and a fixing structure 6 provided in the upper end cover.

3 and 4, the fixing structure 5 includes a first motor positioning mechanism and a second motor positioning mechanism disposed on the inner surface of the upper portion 1 of the valve body.

The first motor positioning mechanism includes a first motor front bearing positioning member 507, a front end positioning member 501, a first motor body positioning member 502, and a first motor rear positioning member 503, which are sequentially arranged.

The first motor front bearing positioning member 507 is disposed above the front end positioning member 501 and has a bearing positioning groove 508. The bearing positioning groove 508 is a semi-circular structure, and its radius is equal to or slightly larger than the radius of the front bearing of the first motor.

The front-end positioning member 501 has a positioning surface 515 that cooperates with the front end of the first motor, and an inclined surface rib 514 is also provided thereon. A slot 516 adapted to the lug 303 on the first motor mounting plate is also provided inside the positioning surface 515.

The first motor rear end positioning member 503 has a positioning surface 511. The first motor and the front end positioning surface 515 and the rear end positioning surface 511 form an interference fit through the inclined surface rib positions 514.

The first motor body positioning member 502 has a profiling groove 509 adapted to the shape of the first motor body. The inner surface of the profiling groove is a semi-circular positioning surface. In this embodiment, the positioning member 502 is an I-shaped structure, which can reduce the amount of material while meeting the positioning requirements. In another embodiment, the positioning member 502 may also be composed of two strip-shaped bodies, and each strip-shaped body has a profiling groove 509 of the same shape, as shown in FIG. 13. In yet another embodiment, the positioning member 502 is a whole or structure, as shown in FIG. 14.

The profiling groove 509 may also be a section of arc surface, such as 1/4 section of arc surface. The profiling groove 509 may also be composed of two arc-shaped surfaces.

5 and 6, the first motor 3 is placed in the motor fixing structure on the upper part of the valve body, so that the front and rear surfaces of the first motor cooperate with the front end positioning surface 515 and the rear end positioning surface 511 respectively, and the front bearing of the first motor Cooperating with the front bearing positioning groove 508, the body of the first motor is matched with the profiling groove 509.

With reference to FIG. 9, the second motor 4 has a square-like structure, and has a bottom plane and a top plane, and a circular arc transition is used between the top plane and the side surfaces. The length L2 of the second motor is 25±0.2mm, the width W2 is 18.2±0.15mm, the height H is 18.2±0.15mm, the radius R of the arc transition surface between the top plane and the side is 6.2mm, and the bearing diameter is 5± 0.1mm.

The length of the second motor 4 is greater than the length of the first motor 3, the length and width are smaller than the diameter of the first motor 3, and the diameter of the front and rear bearings is smaller than the bearing diameter of the first motor 3.

The second motor positioning mechanism includes a motor front positioning surface 515, a second motor body positioning member 504, a second motor rear positioning member 505, and a second motor rear bearing that are sequentially disposed on the upper inner surface of the valve body定位件506.

The positioning surface 515 of the front end of the motor serves as a shared positioning surface of the first motor 3 and the second motor 4.

The second motor body positioning member 504 is a pair of convex strips. The convex surface has a second motor body positioning surface 510. The positioning surface 510 of the second motor body is a flat surface adapted to the bottom of the second motor body.

The second motor rear end positioning member 505 is provided with a second motor rear positioning surface 512. The front end surface of the convex strip can also be used as the rear end positioning surface of the first motor. In another embodiment, the second motor rear end positioning member 505 may be a square bump, as shown in FIG. 13. In yet another embodiment, the second motor rear end positioning member 505 is a set of convex posts, as shown in FIG. 14.

The second motor rear bearing positioning member 506 is disposed above the second motor rear end positioning member 505 and has a second motor rear bearing positioning groove 513 adapted to the shape of the bearing.

In this embodiment, the positioning members can be independent of each other, so that they can be connected back and forth or up and down according to the set position.

7 and 8, the fixing structure 6 in the upper end cover includes a first motor fixing structure and a second motor fixing structure provided on the inner surface of the upper end cover 2.

The first motor fixing structure includes a first motor front bearing positioning member 602, a motor front end positioning surface 603, a first motor body anti-shaped groove 606, and a first motor rear end positioning surface 611, which are sequentially arranged.

The first motor front bearing positioning member 602 has a bearing positioning groove 601. The bearing positioning groove 601 is a semi-circular structure, and its radius is equal to or slightly larger than the radius of the front bearing of the first motor.

The first motor body anti-shaped groove 606 is a semi-circular groove formed on the upper end cover. The front and rear surfaces of the first motor body anti-shaped groove 606 respectively constitute a motor front end positioning surface 603 and a first motor rear end positioning surface 611. An inclined surface 604 is provided on the positioning surface 603 at the front end of the motor. A slot 605 adapted to the lug 304 on the first motor mounting plate is also provided inside the motor front end positioning surface 603.

The second motor positioning mechanism includes a motor front positioning surface 603, a second motor body positioning member 607, a second motor rear positioning surface 608, and a second motor rear bearing positioning, which are sequentially arranged on the inner surface of the upper end cover Piece 609.

The motor front end positioning surface 603 is a positioning surface shared by the first motor and the second motor front end.

The second motor body positioning member 607 is a pair of claws, which respectively clamp the arc transition surfaces of the left and right shoulders of the second motor.

The second motor rear end positioning surface 608 is the rear wall surface of the groove 612 opened by the upper end cover.

The second motor rear bearing positioning member 609 is provided with a second motor rear bearing positioning groove 610 adapted to the shape of the bearing.

Referring to FIG. 10, the second motor 4 is assembled as follows:

1. Place the second motor 4 in the fixed structure on the upper part of the valve body, so that the front and rear surfaces of the second motor cooperate with the front positioning surface 515 and the rear positioning surface 512, and the rear bearing and the rear bearing positioning groove 513 of the second motor In cooperation, the bottom plane of the second motor cooperates with the positioning surface 510 of the convex strip.

2. Install the upper end cover 2 on the second motor 4 so that the front and rear end surfaces of the second motor are matched with the front end positioning surface 603 and the rear end positioning surface 608 of the upper end cover respectively. The rear bearing of the second motor and the rear bearing of the upper end cover The positioning groove 610 is engaged, and the shoulder of the second motor is engaged with a pair of claws 607 of the upper end cover.

3. Fix the upper end cover 2 with the upper portion 1 of the valve body, and the second motor 4 can be reliably fixed.

11 and 12, when the second motor 4 is installed, its front bearing can still be placed in the first motor front bearing positioning groove 508 on the upper portion of the valve body. Since the bearing diameter of the second motor is smaller than that of the first motor, there is no interference.

At the same time, the size of the profile groove of the first motor body in the upper part of the valve body should also avoid interference with the second motor body. If necessary, two or more arcs can be used.

The upper part 1 of the valve body, the upper end cover 2 and the motor fixing structure provided thereon are all made of plastic parts.

15-20, another typical structure of the electric valve motor fixing structure of the present application, specifically, differs from the embodiment of FIGS. 1-12 in that:

The second motor 4 has a square-like structure, and has a bottom plane, a top plane, and arc surfaces on both sides. All positioning elements in the upper part of the valve body are integrated on a base 517. The base 517 is fixed to the inner surface of the upper portion 1 of the valve body. The base 517 and the upper portion 1 of the valve body may be integrally injection molded. The rear section of the base 517 has a planar structure, and the platform surface constitutes the positioning surface 510 of the second motor body. The first section of the base 517 defines a first motor body profiling slot 509. The front and rear surfaces of the profiling groove 509 of the first motor body are the front positioning surface 515 of the motor and the rear positioning surface 511 of the first motor, respectively. The second motor body positioning member of the upper end cover is a set of positioning protrusions 607.

It should be noted that the remaining structures are basically the same as the embodiments in FIGS. 1 to 12, and details are not described here.

The above-mentioned embodiments are only for the purpose of illustrating the present disclosure, rather than limiting the present disclosure. Those of ordinary skill in the technical field can make various changes and modifications without departing from the scope of the present disclosure. Therefore, all Equivalent technical solutions should also fall within the scope of this disclosure.

Industrial applicability

The valve provided in this application realizes the power transmission between the power unit and the valve core through the magnetic force between the active magnetic force surface and the passive magnetic force surface. Only the active magnetic force surface and the passive magnetic force surface need to be set face-to-face during assembly and generate enough power to realize the power The transmitted magnetic force is sufficient. Since the coaxiality between the active magnetic member and the passive magnetic member is low, assembly efficiency can be improved.

Claims

A valve, characterized by comprising: a housing, and a power unit and a valve core installed in the housing, the valve further includes an active magnetic member connected to the power unit and connected to the valve core Passive magnetic parts on the

The active magnetic force member has an active magnetic force surface, and the extension direction of the active magnetic force surface is perpendicular to the axial direction of the output shaft of the power unit. The passive magnetic force element has a passive magnetic force surface, and the active magnetic force surface is The passive magnetic force surfaces are arranged oppositely to transmit the power generated by the power unit to the valve core through the magnetic force between the active magnetic force member and the passive magnetic force member.
The valve according to claim 1, wherein the active magnetic force surface and the passive magnetic force surface are both flat, and the active magnetic force surface is parallel to the passive magnetic force surface.
The valve according to claim 1 or 2, wherein the active magnetic member and the passive magnetic member are both circular members, and the circular members include circumferentially distributed and connected in sequence in the circular member Multiple sector magnetic blocks.
The valve according to any one of claims 1-3, wherein a first accommodating cavity and a second accommodating cavity are formed in the housing, and the power unit and the active magnetic member are mounted on the first In the accommodating cavity, the valve core and the passive magnetic member are installed in the second accommodating cavity, and the housing includes a partition that separates the first accommodating cavity and the second accommodating cavity. The extension direction of the piece is perpendicular to the output axis of the power unit.
The valve according to claim 4, wherein a first anti-wear boss for separating the partition member and the active magnetic member is formed on the active magnetic member.
The valve according to any one of claims 1 to 5, characterized in that it includes a gear train assembly installed in the housing, and the gear train assembly includes a first stage that directly receives power generated by the power unit A transmission member, the passive magnetic force member is installed on the first-stage transmission member.
The valve according to claim 6, wherein a mounting seat is provided in the housing, the gear train assembly includes an Nth-stage transmission member, and the Nth-stage transmission member is installed on the installation seat, In order to isolate the Nth stage transmission member from the housing, the N is a natural number.
The valve according to claim 7, wherein the Nth-stage transmission member is a first-stage transmission member, and a second anti-wear boss is formed on the passive magnetic member to separate the mounting seat from all Said passive magnetic parts.
The valve according to any one of claims 6-8, wherein the gear train assembly includes a final-stage transmission member connected to the valve core, and the final-stage transmission member and the valve core are integrally formed as Spool unit.
The valve according to claim 9, wherein a dustproof portion is formed on the valve core unit, a communication passage is formed in the housing, and the dustproof portion is located in the communication passage.
[Corrected according to Rule 26 03.03.2020]
An electronic valve includes a valve body, an upper end cover and a lower end cover, an upper portion of the valve body is connected to the upper end cover, and a lower portion of the valve body is connected to the lower end cover, characterized in that the upper end cover and/or the lower end The cover is fixed to the valve body by laser welding; and of the two parts welded by laser, one of the parts is made of light-transmitting material, and the other part is made of light-absorbing material.
The electronic valve according to claim 11, wherein the upper end cover and the lower end cover are fixed to the valve body by laser welding.
The electronic valve according to claim 11 or 12, wherein the inner surface of the upper end cover is bonded to the upper end surface of the valve body, and the bonded portion is a laser welding surface;

The upper end surface of the valve body has outwardly turned edges.
The electronic valve according to any one of claims 11 to 13, wherein the inner surface of the lower end cover is bonded to the lower end surface of the valve body, and the bonded portion is a laser welding surface;

The lower end surface of the valve body has an outward flange.
The electronic valve according to claims 11-14, characterized in that, the positioning between the upper part of the valve body and the upper end cover is achieved through the cooperation of a pair of positioning pin shafts and positioning shaft holes.
The electronic valve according to any one of claims 11 to 15, wherein the valve body is made of a light-absorbing material, and the upper end cover and the lower end cover are made of a light-transmitting material.
The electronic valve according to claim 16, wherein the upper end cover and the lower end cover are made of PA9T plastic, and a light-transmitting carrier is added, and the light transmittance is greater than 20%.
[Corrected according to Rule 26 03.03.2020]
A motor fixing structure of an electronic valve includes an upper portion of a valve body and an upper end cover, and is characterized in that the upper portion of the valve body and the upper end cover are provided with at least a first motor fixing mechanism and a second motor fixing mechanism. The axes of the first motor and the second motor coincide.
The motor valve fixing structure of claim 18, wherein the first motor has a circular structure, a front mounting panel is provided on the front end of the first motor, and the front mounting panel A pair of lugs are provided symmetrically; the front end positioning surface, the first motor rear end positioning surface, the first motor body profiling groove, the first motor front bearing positioning groove and A slot matched with the lug;

The second motor has a square-like structure with a bottom plane and a top plane, and a circular arc transition is used between the top plane and the side surfaces; a rear end positioning surface of the second motor is provided on the upper part of the valve body 1. A pair of convex strips matching the bottom of the second motor body and a positioning groove for the rear bearing of the second motor; the upper end cover is provided with a rear positioning surface of the second motor and a pair of arcs with the second motor body Claws matching the transition surface and the positioning groove of the rear bearing of the second motor;

The front positioning surface on the upper part of the valve body and the upper end cover serves as the common positioning surface of the first motor and the second motor, and there is also a slanted rib on it to form an interference fit between the front and the rear.
A motor fixing structure for an electronic valve according to claim 18, characterized in that

The first motor has a circular structure, a front mounting panel is provided at the front end of the first motor, and a pair of lugs are symmetrically provided on the front mounting panel; on the upper portion of the valve body and the upper end cover Each is provided with a front-end positioning surface, a first motor rear-end positioning surface, a first motor body profiling groove, a first motor front bearing positioning groove, and a slot matched with the lug;

The second motor has a square-like structure, and has a bottom plane and a top plane; on the upper part of the valve body, a rear motor positioning surface, a boss matching the bottom of the second motor body and a first Two motor rear bearing positioning grooves; the upper end cover is provided with a second motor rear end positioning surface, a set of protrusions matching the top surface of the second motor body, and a second motor rear bearing positioning groove;

The front end positioning surface on the upper part of the valve body and the upper end cover serves as the common positioning surface of the first motor and the second motor, and there is also a slanted rib on it to form an interference fit between the front and the rear.