CN110953391A - Motor fixing structure and electric valve comprising same - Google Patents
Motor fixing structure and electric valve comprising same Download PDFInfo
- Publication number
- CN110953391A CN110953391A CN201911317075.1A CN201911317075A CN110953391A CN 110953391 A CN110953391 A CN 110953391A CN 201911317075 A CN201911317075 A CN 201911317075A CN 110953391 A CN110953391 A CN 110953391A
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- CN
- China
- Prior art keywords
- lower section
- section part
- elastic
- fixing piece
- stator
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- Pending
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Classifications
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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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a motor fixing structure and an electric valve comprising the same, wherein a shell part of the electric valve comprises an upper section part and a lower section part, the outer diameter of the lower section part is larger than that of the upper section part, and the bottom of an inserting hole is abutted against the top of the lower section part; the stator also comprises an elastic fixing piece, the elastic fixing piece is provided with a plurality of elastic pieces in a downward overhanging mode, the elastic pieces are arranged around the periphery of the lower section part in a circumferential mode, a convex part protruding inwards and radially towards the center direction of the lower section part is arranged on the elastic pieces, and a concave part mutually clamped with the convex part is arranged on the periphery of the lower section part, so that the stator is assembled on the shell part. According to the invention, the strip-shaped recess and the recess mutually clamped with the convex part are formed on the lower section part of the shell part, so that the acting force of the elastic fixing piece loaded into the recess of the lower section part of the shell is reduced, and the stability and convenience of assembling the shell part and the spindle are improved.
Description
Technical Field
The invention belongs to the technical field of refrigeration electric valve devices, and particularly relates to a motor fixing structure and an electric valve comprising the same.
Background
The movable 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 is controlled. The existing electric valve is usually driven by a stepping motor, and a screw mechanism converts the rotary motion of the motor into linear motion, so that a conical valve core elastically connected with a screw thread is close to or far away from a valve port. Therefore, in order to ensure the stability of the operation of the stepping motor and the convenience of the assembly of the electric valve, the assembly and fixation between the rotor and the stator of the stepping motor are very important.
Patent publication No. CN 109253533 a discloses an electric valve and a refrigeration cycle system: in the motor-operated valve, a stator is easily attached to a valve body and a housing, a bracket is attached to one portion of the stator around an opening of a valve body side insertion hole, and the bracket is composed of an elastic piece and a convex portion. The elastic piece and the convex portion are disposed in the skirt portion from the valve main body side, and a concave portion is formed on the outer periphery of the large diameter portion of the case portion. The housing is fitted into a cylindrical insertion hole of the stator, and the convex portion of the bracket is engaged with the concave portion of the housing. The electric valve divides the shell into the small-diameter part and the large-diameter part, so that the bracket convex part is ensured not to interfere with the small-diameter part of the shell, and the assembly is convenient. However, due to the influence of the size, the transition from the small diameter part to the large diameter part is difficult to be smoothly performed, the convex part of the bracket slides into the large diameter part with large resistance, the convex point of the bracket can slide into the large diameter part with large force, and the assembly force is large, so that the assembly is inconvenient. And meanwhile, the shell is dotted on the shell to cause the deformation of the shell and influence the subsequent installation, and particularly, after the shell is dotted and becomes elliptical, the subsequent laser welding of the shell and the valve seat is influenced, so that the laser welding defect is caused, and the sealing performance of a product is influenced. In addition, when the convex points and the concave points are engaged, the transition is smooth, so that the problems of insufficient engaging force and the like are easily caused.
Disclosure of Invention
In view of the above problems in the prior art, the present invention is directed to a motor fixing structure and an electrically operated valve including the same.
Therefore, the invention adopts the following technical scheme: a motor fixed structure, the stator of the electric valve has inserting hole used for wearing the casing of the electric valve, the magnetic rotor is set up in the said casing cavity, its characteristic is, the said casing includes upper segment portion and lower segment portion, the external diameter of the lower segment portion is greater than the external diameter of the upper segment portion, the bottom of the said inserting hole leans against the top position of the lower segment portion;
the stator further comprises an elastic fixing piece, the elastic fixing piece is provided with a plurality of elastic pieces in a downward overhanging mode, the elastic pieces are arranged around the periphery of the lower section part in a circumferential mode, a convex part protruding inwards and radially towards the center direction of the lower section part is arranged on each elastic piece, and a concave part mutually clamped with the convex part is arranged on the periphery of the lower section part, so that the stator is assembled on the shell part.
In addition to the above technical solutions, the present invention also includes the following technical features.
The concave part is provided with a strip-shaped dent at the adjacent position, the strip-shaped dent extends upwards to the top of the lower section part, and the lower section part is in a cone shape with a big top and a small bottom. When the stator is assembled, the convex part on the elastic sheet is inserted into the lower section part along the elongated concave part, and the interference amount of the convex part and the lower section part can be reduced because the lower section part is in a tapered shape with a large upper part and a small lower part, so that the assembling force is reduced, and the assembling convenience is improved.
The concave part is a groove or a through hole.
The convex part is in a conical shape with a large outer part and a small inner part, and a formed taper angle α is smaller than 45 degrees, and the conical surface is clamped with the edge of the concave part, so that large clamping force can be generated, a good effect on preventing the stator from axially disengaging and rotating in the circumferential direction is achieved, and the structural arrangement can greatly improve the assembly stability of the stator and the stator.
The top surface of the conical shape is a spherical surface, so that the convex part can rotate on the lower section part conveniently, and the rotating torque force can be reduced.
The electric valve comprises a valve shell and is characterized in that the inner side of the bottom of the upper section of the shell is hermetically welded with the outer side of the top of the valve shell to form a sealing weld, and the upper section is positioned above the sealing weld. With this configuration, the recess is formed in the lower step portion without affecting the dimensional accuracy of the upper step portion, and the recess is formed outside the seal body formed between the valve housing and the case portion without affecting the sealing performance of the valve main body.
The elastic fixing piece is fixed by plastic welding of a plastic boss formed by encapsulating the stator, and the plastic boss penetrates out of the elastic fixing piece, so that the assembly stability of the stator and the valve body is ensured.
The bottom of the elastic fixing piece is also provided with a lower supporting part which is suspended downwards, and the lower supporting part is used for supporting the transition positions of the upper section part and the lower section part.
The invention can achieve the following beneficial effects: 1. according to the invention, the strip-shaped recess and the recess mutually clamped with the convex part are formed on the lower section part of the shell part, so that the acting force of the elastic fixing piece loaded into the recess of the lower section part of the shell is reduced, and the stability and convenience of assembling the shell part and the spindle are improved. 2. The convex part is designed into a conical shape, so that the clamping force and the clamping torque can be increased, and the assembling reliability is improved; the elastic sheet is provided with a plurality of concave parts which are simultaneously clamped with the lower section part of the shell part, so that the clamping stability can be improved. 3. The electric valve of the invention arranges the concave part of the lower section part of the shell part at the lower part of the welding seam, can prevent the deformation of the matching part of the concave part forming and the valve shell, and meanwhile, the concave part can not affect the air tightness of the product because of small holes. 4. The supporting part is arranged on the elastic fixing piece, so that the phenomena of stator over-installation and the like can be prevented, and the convenience of assembly is improved.
Drawings
Fig. 1 is an exploded view of an electric valve according to the present invention.
Fig. 2 is a schematic view of the stator structure of the present invention.
Figure 3 is a schematic view of the assembled profile of the electric valve of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1-3, the stator 1 of the electric valve of the present invention is provided with a plug hole for inserting the housing 2 of the electric valve, the magnetic rotor 4 is disposed in the inner cavity of the housing 2, the housing 2 includes an upper section 21 and a lower section 22, the outer diameter of the lower section 22 is larger than the outer diameter of the upper section 21, the bottom of the plug hole abuts against the top of the lower section 22, the stator 1 further includes an elastic fixing piece 3, the elastic fixing piece 3 is downwardly suspended and provided with 2 elastic pieces 31, the elastic pieces 31 are symmetrically arranged around the outer circumference of the lower section 22, the elastic pieces 31 are provided with a convex portion 32 radially protruding inward toward the center of the lower section, the outer circumference of the lower section 22 is provided with a convex portion 221 mutually engaged with the convex portion 32, a strip-shaped recess 222 is provided adjacent to the convex portion 221, the strip-shaped recess 222 extends upward to the top of the lower section 22, the lower section 22 is tapered, preferably, the convex portion 221 is a through hole, the convex portion 32 is tapered shape with a taper angle α smaller than 45 degrees, and the top surface of the tapered shape is a spherical.
The motor-operated valve of the present invention includes a valve housing 5, wherein the bottom inside portion of an upper stage portion 21 of a housing portion 2 is hermetically welded to the top outside portion of the valve housing 5 to form a sealing weld 51, and the upper stage portion 21 is located above the sealing weld 51. Preferably, the elastic fixing plate 3 is fixed by plastic welding through a plastic boss 12 formed by the stator envelope 11, the plastic boss 12 penetrating the elastic fixing plate 3. The bottom of the elastic fixing piece 3 is further provided with a lower supporting part 33 which is suspended downwards, and the lower supporting part 33 is used for supporting the transition position of the upper section 21 and the lower section 22.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a motor fixed knot constructs, stator (1) of motorised valve is provided with the plug hole that is used for wearing to adorn casing portion (2) of motorised valve, magnetism rotor (4) set up in the inner chamber of casing portion (2), its characterized in that: the shell part (2) comprises an upper section part (21) and a lower section part (22), the outer diameter of the lower section part (22) is larger than that of the upper section part (21), and the bottom of the inserting hole abuts against the top of the lower section part (22);
the stator (1) further comprises an elastic fixing piece (3), the elastic fixing piece (3) is provided with a plurality of elastic pieces (31) in a downward overhanging mode, the elastic pieces (31) are arranged around the periphery circumference of the lower section part (22), the elastic pieces (31) are provided with convex parts (32) protruding inwards in the radial direction in the center direction of the lower section part, and the periphery of the lower section part (22) is provided with concave parts (221) mutually clamped with the convex parts (32).
2. A motor fixing structure as claimed in claim 1, wherein: the adjacent position of the concave part (221) is provided with a strip-shaped recess (222), and the strip-shaped recess (222) extends upwards to the top of the lower section part (22).
3. A motor fixing structure as claimed in claim 2, wherein: the concave part (221) is a groove or a through hole.
4. A motor fixing structure as claimed in claim 3, wherein: the convex part (32) is in a conical shape with a large outer part and a small inner part, and the formed cone angle is less than 45 degrees.
5. The motor fixing structure according to claim 4, wherein: the top surface of the conical shape is a spherical surface.
6. An electrically operated valve comprising the motor fixing structure of claim 1, 2, 3, 4 or 5, comprising a valve housing (5), characterized in that the bottom inner side of the upper section (21) of the housing (2) is hermetically welded to the top outer side of the valve housing (5) to form a sealing weld (51), and the upper section (21) is located above the sealing weld (51).
7. Electrically operated valve according to claim 6, characterized in that: the elastic fixing piece (3) is fixed by plastic welding through a plastic boss (12) formed by the stator encapsulation (11), and the plastic boss (12) penetrates through the elastic fixing piece (3).
8. Electrically operated valve according to claim 6 or 7, characterized in that: the bottom of the elastic fixing piece (3) is also provided with a lower supporting part (33) which is suspended downwards, and the lower supporting part (33) is used for supporting the transition position of the upper section part (21) and the lower section part (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911317075.1A CN110953391A (en) | 2019-12-19 | 2019-12-19 | Motor fixing structure and electric valve comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911317075.1A CN110953391A (en) | 2019-12-19 | 2019-12-19 | Motor fixing structure and electric valve comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110953391A true CN110953391A (en) | 2020-04-03 |
Family
ID=69982914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911317075.1A Pending CN110953391A (en) | 2019-12-19 | 2019-12-19 | Motor fixing structure and electric valve comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110953391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811157A (en) * | 2022-04-06 | 2022-07-29 | 浙江中宝自控元件有限公司 | Motor fixing structure and electric valve applying same |
-
2019
- 2019-12-19 CN CN201911317075.1A patent/CN110953391A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811157A (en) * | 2022-04-06 | 2022-07-29 | 浙江中宝自控元件有限公司 | Motor fixing structure and electric valve applying same |
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