CN114811157A - Motor fixing structure and electric valve applying same - Google Patents
Motor fixing structure and electric valve applying same Download PDFInfo
- Publication number
- CN114811157A CN114811157A CN202210354098.5A CN202210354098A CN114811157A CN 114811157 A CN114811157 A CN 114811157A CN 202210354098 A CN202210354098 A CN 202210354098A CN 114811157 A CN114811157 A CN 114811157A
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- buckle
- bracket
- stator
- fixing structure
- motor fixing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a motor fixing structure and an electric valve applying the structure, wherein the motor fixing structure comprises a buckle fixed on the lower end surface of a stator and a bracket fixedly arranged on the periphery of a shell, the buckle at least comprises a buckle base part, a buckle inserting and embedding hole, a buckle supporting part and a buckle clamping part, the buckle inserting and embedding hole corresponds to the stator inserting and embedding hole, the buckle supporting part is arranged at the bottom of the buckle base part, the buckle supporting part is abutted against the upper surface of the bracket, and the bracket is provided with a bracket clamping part matched with the buckle clamping part. According to the invention, the edges of the buckle insertion holes are bent downwards to form a plurality of supporting parts with bottom ends on the same plane, and the supporting parts are abutted against the flat part of the bracket, so that the opposite grinding surfaces of the stator and the valve body are made of metal, and plastic on the coil is prevented from being scraped. And meanwhile, the supporting surface of the supporting part formed by bending is also far away from the end surface of the coil, so that the interference of the bracket with the grounding wire and the plastic boss is avoided.
Description
Technical Field
The invention relates to the technical field of electric valves of refrigeration or heating equipment, in particular to a motor fixing structure and an electric valve applying the structure.
Background
The electric valve is mainly applied to a refrigerating or heating system, and is linked with a variable frequency compressor in the system by changing the valve port flow area of the electric valve, so that the refrigerant pressure of the refrigerating or heating system and the refrigerant flow in the system are controlled, and the refrigerating or heating system is always in the optimal state. The electric valve changes the valve port flow area and usually adopts a stepping motor as power to implement, and in order to ensure the working stability of the stepping motor and the assembly convenience of the electric valve, the assembly fixation between a rotor and a stator of the stepping motor is very important.
Application No. 201420529099.X discloses a solution: provided are a refrigeration device and an electronic expansion valve thereof, which can ensure the reliability of grounding conduction and improve the use safety. The electronic expansion valve comprises a valve body and a coil, wherein the coil comprises an electromagnetic pole plate, a stator shell in conductive contact with the electromagnetic pole plate, a plastic shell wrapping the outside of the electromagnetic pole plate and the stator shell, and a connecting piece capable of being in conductive connection with the valve body, wherein the plastic shell is provided with a mounting hole for mounting the connecting piece, so that the connecting piece can pass through the mounting hole and the electromagnetic pole plate or the stator shell in conductive contact. Compared with the prior art, the produced resin layer of injection moulding's in-process can not influence the contact reliability of connecting piece and stator shell or electromagnetic polar plate, also does not have the problem that leads to connecting failure because of the live time overlength, after the connecting piece installation gets into the mounting hole, the mounting hole is by the shutoff, and whole stator shell and electromagnetic polar plate are enveloped to can avoid leading to ground connection to switch on harmfully because of rustting etc..
However, the plastic plane at the bottom end of the coil in the prior art is ground with the metal plane on the valve body, and especially when the coil is just cut into the valve body, the plastic at the bottom end surface of the coil is very easy to scrape off, which causes clamping abnormality or electrical performance abnormality. Meanwhile, the grounding wire is in contact with the ground wire in a poor contact mode due to reasons such as insufficient size or elasticity, so that the grounding function of the coil is abnormal.
In addition, the existing grounding mode adopts the radial contact of the elastic boss of the fixing frame and the magnetizer, and due to size error and assembly error, the condition of poor contact easily occurs, so that the poor contact of the electric coupler is caused, and the electromagnetic interference can not be effectively eliminated in time in serious conditions, so that the misoperation of the motor is caused. The plugging mounting hole is generally made of epoxy resin, and the epoxy resin can enter between the contact parts and cause poor contact.
Disclosure of Invention
The present invention is directed to a motor fixing structure and an electrically operated valve using the same, which are used to solve the problems of the prior art in the background art.
The technical problem of the invention is mainly solved by the following technical scheme: a motor fixing structure comprises a stator and a shell part, wherein the shell part is internally provided with a magnetic rotor, and the stator is provided with a stator inserting and embedding hole for embedding the shell part; the motor fixing structure comprises a buckle fixed on the lower end face of the stator and a bracket fixedly arranged on the periphery of the shell, and the buckle is matched with the bracket;
the buckle at least comprises a buckle base part, a buckle inserting hole, a buckle supporting part and a buckle clamping part, the buckle inserting hole corresponds to the stator inserting hole, the edge of the buckle inserting hole is bent downwards to form the buckle supporting part, the buckle supporting part is abutted to the upper surface of the bracket, and the bracket is provided with a bracket clamping part matched with the buckle clamping part.
Preferably, the stator comprises an electromagnetic coil, a metal magnetizer and an encapsulating layer encapsulating the electromagnetic coil and the metal magnetizer, a hole extending to the metal magnetizer is formed in the lower end face of the encapsulating layer, a metal elastic element is arranged in the hole, and two ends of the metal elastic element are respectively abutted against the metal magnetizer and the buckle.
Preferably, the number of the buckle supporting parts is multiple, and the buckle supporting parts are uniformly distributed along the inner edge of the buckle insertion hole; the bottom ends of the plurality of buckle supporting parts are on the same plane.
Preferably, the snap lock part is formed by bending and extending the edge of the snap base part, and the snap lock part is located below the bracket lock part.
Preferably, the clip position part and the bracket position part are respectively provided with a convex point and a concave pit which are matched with each other.
Preferably, the lower end face of the stator is provided with a plurality of plastic bosses, the buckles are provided with through holes corresponding to the plastic bosses, and the ends of the plastic bosses are melted by a plastic welding process after penetrating through the through holes to form an approximately spherical shape with the size larger than that of the through holes.
Preferably, the buckle clamping part is located in the middle of two adjacent plastic bosses.
Another objective of the present invention is to provide an electric valve, which includes a motor, an end cover, a valve seat, a connecting tube, and the above-mentioned motor fixing structure.
Furthermore, the edge of the inner ring of the bracket is bent downwards to form a bracket supporting part, and the bracket supporting part is abutted to the upper end face of the end cover.
Further, the bracket and the shell part are fixed by brazing after laser welding and positioning.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the edges of the buckle insertion holes are bent downwards to form a plurality of supporting parts with bottom ends on the same plane, and the supporting parts are abutted against the flat part of the bracket, so that the opposite grinding surfaces of the stator and the valve body are made of metal, and plastic on the coil is prevented from being scraped. And meanwhile, the supporting surface of the supporting part formed by bending is also far away from the end surface of the coil, so that the interference of the bracket with the grounding wire and the plastic boss is avoided.
2. According to the invention, the elastic element is arranged between the buckle and the motor, and because the elastic element can be provided with larger deformation, the reliable contact between the elastic element and the buckle and between the elastic element and the motor can be ensured, and the electric connection effect between the buckle and the motor stator can be ensured; the elastic element is put into the plastic hole, and the buckle is covered on the plastic hole, so that the problem of rusting of the exposed magnetizer can be effectively prevented, and the grounding capability of the buckle and the magnetizer can not be hindered.
3. In a preferred embodiment of the invention, the buckle is fixed through the plastic boss and the plastic welding process, so that the assembly precision of the buckle is improved.
4. In a preferred embodiment of the present invention, the bracket and the shell are laser-welded and then brazed, which improves the fixing strength and dimensional accuracy of the bracket.
Drawings
Fig. 1 is a schematic view of a prior art structure.
Fig. 2 is a schematic view of the overall structure of the electrically operated valve of the present invention.
Fig. 3 is a schematic view of the mounting structure of the buckle of the present invention.
Fig. 4 is a schematic structural view of the buckle of the present invention.
Fig. 5 is a schematic view of the mounting structure of the bracket of the present invention.
Fig. 6 is a schematic view of the structure of the bracket of the present invention.
Fig. 7 is a bottom structure view of the bracket of the present invention.
Fig. 8 is a partial cross-sectional view of a stator in the present invention.
In the figure: 1. the magnetic field generator comprises a stator, a plastic boss, a magnetic coil, a metal magnetizer, a metal magnetic conductor, a sealing layer, a cylindrical hole, a metal elastic element and a magnetic coil, wherein the stator 1a, the plastic boss, the electromagnetic coil 1b, the metal magnetizer 1c, the metal magnetic conductor 1d, the sealing layer 1e and the cylindrical hole are arranged in the cylindrical hole; 2. the buckle comprises a buckle 2a, a buckle clamping part 2b, a buckle inserting hole 2c, a buckle supporting part 2d and a buckle base part; 3. a bracket 3a, a bracket supporting part 3b, a bracket clamping part 3c and a flat part; 4. an end cap; 5. a valve seat; 6. taking over a pipe; 7. the shell portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by way of embodiments in combination with the accompanying drawings.
Example 1
2-8, the motor includes a stator 1 and a magnetic rotor, wherein the magnetic rotor is accommodated in a shell 7 which is approximately cylindrical and takes the axis as the center, and a bracket 3 which is flat is arranged on the outer circumference of the shell 7; the stator 1 is provided with a stator inserting hole for embedding the shell part 7, and a buckle 2 is fixed on the lower end face of the stator 1. In this embodiment, the clip 2 and the bracket 3 are made of metal.
The buckle 2 at least comprises a buckle base part 2d, a buckle insertion embedding hole 2b, a buckle supporting part 2c and a buckle clamping part 2a, wherein the center of the buckle base part 2d is provided with the buckle insertion embedding hole 2b, and the size of the buckle insertion embedding hole 2b is slightly larger than that of the stator insertion embedding hole; the inner edge of the buckle embedding hole 2b is bent downwards to form a plurality of buckle supporting parts 2c with the bottom ends on the same plane; the buckle clamping part 2a is formed by extending the edge of the buckle base part 2d outwards and bending 180 degrees.
The bracket 3 at least comprises a bracket base part, a bracket inserting and embedding hole, a bracket supporting part 3a and a bracket clamping part 3b, wherein the upper surface of the bracket base part is provided with a flat part 3c corresponding to the clamping and supporting part 2c, and the center of the bracket base part is provided with the bracket inserting and embedding hole for inserting and fixing the shell part 7; the inner edge of the bracket inserting hole is bent inwards to form a plurality of bracket supporting parts 3a with the bottom ends on the same plane; the holder holding portion 3b is formed by extending the holder edge outward.
According to the motor fixing structure, the bottom end face of the buckle supporting portion 2c is abutted to the flat portion 3c of the upper end face of the bracket, the stator 1 is supported on the bracket 3, the opposite grinding faces of the stator 1 and the valve body are both made of metal, and plastic on a coil is prevented from being scraped.
In the motor fixing structure, the upper surface of the fastening position-retaining portion 2a and the lower surface of the bracket position-retaining portion 3b are respectively provided with a convex point and a concave pit which are matched with each other, for example, the convex point is arranged on the bracket position-retaining portion 3b, and the concave pit is arranged on the fastening position-retaining portion 2 a; in other embodiments of the present invention, the concave portions may be provided on the bracket engaging portions 3b, and the convex portions may be provided on the clip engaging portions 2 a. The convex-concave clamping of the salient points and the concave pits limits the circumferential freedom degree of the stator 1 and prevents the circumferential rotation of the coil. Further, by bending the engaging portion 2a by 180 °, the engaging portion 2a abuts on the lower surface of the bracket engaging portion 3b, and the engaging support portion 2c abuts on the flat portion 3c of the upper surface of the bracket 3, so that the axial degree of freedom of the stator 1 can be restricted, and the stator 1 can be prevented from moving in the axial direction.
In this embodiment, the lower terminal surface of stator 1 is equipped with a plurality of plastics boss 1a that are used for fixed buckle 2, specifically, buckle 2 is equipped with the through-hole that corresponds with plastics boss 1a, adopts plastics welding process melting to be the approximate sphere that the size is greater than the through-hole after the through-hole is passed to the tip of plastics boss 1a, carries on spacingly to buckle 2. The buckle screens portion 2a is located the intermediate position of two adjacent plastics bosss 1a, respectively is 45 degrees angles with the line at these two plastics bosss 1a and stator center for during the atress of buckle screens portion 2a, this two adjacent plastics bosss 1a can even atress, avoid buckle basal portion 2d perk, make buckle 2's fixed more reliable.
In this embodiment, the stator 1 includes an electromagnetic coil 1b and a metal magnetizer 1c, and an encapsulating layer 1d is formed during encapsulation and injection molding, and the electromagnetic coil 1b and the metal magnetizer 1c are encapsulated inside by the encapsulating layer 1 d. The lower end face of the encapsulating layer 1d is provided with a cylindrical hole 1e extending inwards to the metal magnetizer 1c, the metal magnetizer 1c is exposed out of the cylindrical hole 1e, a metal elastic element 1f is arranged in the cylindrical hole 1e, one end of the metal elastic element 1f is abutted to the metal magnetizer 1c, and the other end of the metal elastic element is abutted to a buckle base part 2d arranged on the outer side of the lower end face of the encapsulating layer. The metal magnetic conductor 1c is electrically connected with the buckle 2 through the metal elastic element 1 f.
In this embodiment, the metal elastic element 1f is a cylindrical coil spring, and the coil spring is disposed between the metal magnetizer 1c and the buckle 2, and since the spring can set a large deformation amount, the coil spring can be ensured to be fully contacted with the metal magnetizer 1c and the buckle 2, and the reliability of the contact between the metal magnetizer 1c and the buckle 2 is ensured.
Example 2
An electric valve, as shown in fig. 2, includes a motor, an end cover 4, a valve seat 5, a connecting pipe 6 and the motor fixing structure described in embodiment 1, wherein a shell 7 of the motor is hermetically connected with the end cover 4, the end cover 4 is hermetically connected with the valve seat 5, the valve seat 5 is hermetically connected with the connecting pipe 6, and the electric valve is connected with a system through the connecting pipe. The valve seat 5, the end cover 4, the adapter tube 6 and the shell part 7 form a sealing system with an inlet and outlet adapter tube opening.
In the motor-operated valve described above, the bracket support portion 3a of the bracket 3 abuts on the upper end surface of the end cap 4, and then the bracket 3 and the housing 7 are laser-welded and positioned, and then fixed by brazing.
In the electrically operated valve, the coil is connected with the ground through the metal elastic element 5, the buckle 2, the bracket 3, the valve seat 5, the connecting pipe 6 and the pipeline in sequence, so that the grounding of the coil is realized, and the misoperation caused by electromagnetic signal interference is prevented.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification and modification of the above embodiments in accordance with the technical spirit of the present invention should be considered as falling within the scope of the present invention.
Claims (10)
1. A motor fixing structure comprises a stator and a shell part, wherein the shell part is internally provided with a magnetic rotor, and the stator is provided with a stator inserting and embedding hole for embedding the shell part; the motor fixing structure is characterized by comprising a buckle fixed on the lower end face of the stator and a bracket fixedly arranged on the periphery of the shell, wherein the buckle is matched with the bracket;
the buckle includes buckle basal portion, buckle and inserts the hole, buckle supporting part and buckle screens portion at least, the buckle is inserted and is inlayed the hole and insert the hole with the stator and correspond, the bottom of buckle basal portion sets up the buckle supporting part, buckle supporting part butt is in the bracket upper surface, the bracket is equipped with the bracket screens portion that matches with buckle screens portion.
2. The motor fixing structure according to claim 1, wherein the stator includes an electromagnetic coil, a metal magnetizer, and an encapsulating layer encapsulating the electromagnetic coil and the metal magnetizer, a hole extending to the metal magnetizer is formed in a lower end surface of the encapsulating layer, a metal elastic element is disposed in the hole, and two ends of the metal elastic element are respectively abutted against the metal magnetizer and the buckle.
3. The motor fixing structure according to claim 1, wherein the number of the clip supporting portions is plural, and the plural clip supporting portions are uniformly distributed along the inner edge of the clip insertion hole; the bottom ends of the plurality of buckle supporting parts are on the same plane.
4. The motor fixing structure of claim 1, wherein the latch engaging portion is formed by bending and extending an edge of a base of the latch, and the latch engaging portion is located below the bracket engaging portion.
5. The motor fixing structure of claim 4, wherein the snap-fit engaging portions and the bracket engaging portions are respectively provided with projections and recesses which are matched with each other.
6. The motor fixing structure of claim 1, wherein the lower end surface of the stator is provided with a plurality of plastic bosses, the fasteners are provided with through holes corresponding to the plastic bosses, and the ends of the plastic bosses are melted into an approximately spherical shape with a size larger than that of the through holes by a plastic welding process after passing through the through holes.
7. The motor fixing structure as claimed in claim 6, wherein the snap-fit retaining portion is located at a middle position between two adjacent plastic bosses.
8. An electrically operated valve comprising a motor, an end cap, a valve seat, a nipple and a motor fixing structure according to any one of claims 1 to 7.
9. The electric valve of claim 8, wherein the inner rim of the bracket is bent downward to form a bracket support portion, and the bracket support portion abuts against the upper end surface of the end cap.
10. An electrically operated valve according to claim 9 wherein the bracket is laser welded in place to the housing portion and then brazed thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210354098.5A CN114811157A (en) | 2022-04-06 | 2022-04-06 | Motor fixing structure and electric valve applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210354098.5A CN114811157A (en) | 2022-04-06 | 2022-04-06 | Motor fixing structure and electric valve applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114811157A true CN114811157A (en) | 2022-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210354098.5A Pending CN114811157A (en) | 2022-04-06 | 2022-04-06 | Motor fixing structure and electric valve applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114811157A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6684901B1 (en) * | 2001-08-23 | 2004-02-03 | Deltrol Controls | Modular liquid dispensing valve |
| CN101498378A (en) * | 2008-01-31 | 2009-08-05 | 浙江三花股份有限公司 | Electric valve |
| TWM542287U (en) * | 2017-01-25 | 2017-05-21 | Dyna Rechi Co Ltd | Motor |
| CN207500619U (en) * | 2017-12-05 | 2018-06-15 | 浙江中宝自控元件有限公司 | Open slot fixing type electric stator valve fixed structure |
| CN209045271U (en) * | 2018-10-08 | 2019-06-28 | 天津华信机械有限公司 | Electromagnetic spool device |
| CN109944975A (en) * | 2017-12-20 | 2019-06-28 | 株式会社鹭宫制作所 | Motor-driven valve stator and motor-driven valve |
| CN110953391A (en) * | 2019-12-19 | 2020-04-03 | 浙江中宝自控元件有限公司 | Motor fixing structure and electric valve comprising same |
| CN213541461U (en) * | 2020-07-19 | 2021-06-25 | 浙江恒森实业集团有限公司 | Combined structure of electronic expansion valve rotor and stator positioning buckle |
| CN214063946U (en) * | 2020-12-30 | 2021-08-27 | 扬州嘉华电气股份有限公司 | Clamping structure and electronic expansion valve applying same |
| CN113803512A (en) * | 2020-06-17 | 2021-12-17 | 浙江三花智能控制股份有限公司 | Electromagnetic valve |
-
2022
- 2022-04-06 CN CN202210354098.5A patent/CN114811157A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6684901B1 (en) * | 2001-08-23 | 2004-02-03 | Deltrol Controls | Modular liquid dispensing valve |
| CN101498378A (en) * | 2008-01-31 | 2009-08-05 | 浙江三花股份有限公司 | Electric valve |
| TWM542287U (en) * | 2017-01-25 | 2017-05-21 | Dyna Rechi Co Ltd | Motor |
| CN207500619U (en) * | 2017-12-05 | 2018-06-15 | 浙江中宝自控元件有限公司 | Open slot fixing type electric stator valve fixed structure |
| CN109944975A (en) * | 2017-12-20 | 2019-06-28 | 株式会社鹭宫制作所 | Motor-driven valve stator and motor-driven valve |
| CN209045271U (en) * | 2018-10-08 | 2019-06-28 | 天津华信机械有限公司 | Electromagnetic spool device |
| CN110953391A (en) * | 2019-12-19 | 2020-04-03 | 浙江中宝自控元件有限公司 | Motor fixing structure and electric valve comprising same |
| CN113803512A (en) * | 2020-06-17 | 2021-12-17 | 浙江三花智能控制股份有限公司 | Electromagnetic valve |
| CN213541461U (en) * | 2020-07-19 | 2021-06-25 | 浙江恒森实业集团有限公司 | Combined structure of electronic expansion valve rotor and stator positioning buckle |
| CN214063946U (en) * | 2020-12-30 | 2021-08-27 | 扬州嘉华电气股份有限公司 | Clamping structure and electronic expansion valve applying same |
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