CN217874439U

CN217874439U - Motor fixing structure and electric valve applying same

Info

Publication number: CN217874439U
Application number: CN202220773954.6U
Authority: CN
Inventors: 俞东; 詹才意; 王林炜
Original assignee: Zhejiang Zhongbao Auto Control Component Co ltd
Current assignee: Zhejiang Zhongbao Auto Control Component Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-11-22
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a motor fixed knot constructs and uses motorised valve of this structure, motor fixed knot constructs including the buckle that is fixed in terminal surface under the stator, fixed mounting is in the bracket of shell periphery, the buckle includes buckle basal portion, buckle insert the inlay hole, buckle supporting part and buckle screens portion at least, the buckle inserts the inlay hole and inserts the inlay hole with the stator and correspond, the buckle inserts the border in inlay hole and bends downwards and form the buckle supporting part, buckle supporting part butt in the bracket upper surface, the bracket is equipped with the bracket screens portion that matches with buckle screens portion. The utility model discloses well buckle inlays the hole border and bends downwards, forms a plurality of bottoms at the coplanar supporting part to with the flat portion butt of bracket, realize that stator and valve body are the metal to the mill face, prevent to scrape plastics on the coil off. 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

Motor fixing structure and electric valve applying same

Technical Field

The utility model relates to a refrigeration or the motorised valve technical field who heats equipment, concretely relates to motor fixed knot constructs and uses the motorised valve of this 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, in the prior art, the plastic plane at the bottom end of the coil is ground opposite to 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 face of the coil is very easy to scrape off, so that the clamping position or the electrical performance is abnormal. 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.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor fixed knot constructs and uses the motorised valve of this structure, aims at solving the problem among the prior art that above-mentioned background art provided.

The above technical problem of the utility model is mainly solved through 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 fastener at least comprises a fastener base part, a fastener inserting hole, a fastener supporting part and a fastener clamping part, the fastener inserting hole corresponds to the stator inserting hole, the edge of the fastener inserting hole is bent downwards to form the fastener supporting part, the fastener supporting part is abutted to the upper surface of the bracket, and the bracket is provided with a bracket clamping part matched with the fastener clamping part.

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 positioning portion and the bracket positioning portion 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 snap fastener clamping part is located in the middle of two adjacent plastic bosses.

Preferably, the lower end surface of the stator is provided with a grounding wire, and the grounding wire is connected with the buckle.

Another objective of the present invention is to provide an electric valve, which comprises a motor, an end cap, a valve seat, a connecting tube and the 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.

Furthermore, the bracket and the shell part are brazed and fixed after laser welding positioning.

Compared with the prior art, the utility model, its beneficial effect lies in:

1. the utility model discloses well buckle inlays the hole border and bends downwards, forms a plurality of bottoms at the coplanar supporting part to with bracket flat portion butt, realize that stator and valve body are the metal to the mill face, prevent to scrape plastics on the coil off. 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. The utility model has the advantages that the stator shell, the buckle and the grounding wire are directly connected, thereby improving the reliability of electric connection;

3. the utility model discloses an among the preferred embodiment, the buckle passes through plastics boss and plastics welding process is fixed, has improved the assembly precision of buckle.

4. The utility model discloses an among the preferred embodiment, bracket and shell are laser-beam welded again earlier, have improved the fixed strength and the size precision of 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 electric valve of the present invention.

Fig. 3 is a schematic view of the mounting structure of the middle buckle of the present invention.

Fig. 4 is a schematic structural view of the middle 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 structural diagram of the bracket of the present invention.

Fig. 7 is a schematic view of the bottom structure of the bracket of the present invention.

Fig. 8 is a schematic structural diagram of the stator of the present invention.

In the figure: 1. stator, 1a, plastic boss; 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 support part 3b, a bracket clamping part 3c and a flat part; 4. an end cap; 5. a valve seat; 6. taking over the pipe; 7. a shell portion; 8. and a ground line.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further specifically described by the following embodiments in conjunction 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 retaining 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 portion may be disposed on the bracket positioning portion 3b, and the convex portion may be disposed on the buckle positioning portion 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.

The lower terminal surface of stator 1 is equipped with earth connection 8 with stator housing fixed connection, and 8 other ends of earth connection are connected with buckle 2 fixed connection, lead the static charge on the stator to buckle 2 through earth connection 8.

Example 2

An electric valve is shown in fig. 2, and comprises 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 static charge on the stator 1 is finally connected with the ground through the grounding wire 8, the buckle 2, the bracket 3, the valve seat 5, the connecting pipe 6 and the pipeline piece, so that the grounding of the coil is realized.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. All the changes and modifications of the above embodiments, which are made according to the technical essence of the present invention, should be considered as belonging to the protection scope of the present invention.

Claims

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 outer periphery of the shell, wherein 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.

2. 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.

3. The motor fixing structure as claimed in claim 1, wherein the snap locking portion is formed by bending and extending an edge of the snap base portion, and the snap locking portion is located below the bracket locking portion.

4. The motor fixing structure of claim 3, wherein the snap-fit engaging portions and the bracket engaging portions are respectively provided with projections and recesses which are matched with each other.

5. 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.

6. The motor fixing structure of claim 5, wherein the snap-fit engaging portion is located at a middle position between two adjacent plastic bosses.

7. The motor fixing structure according to claim 1, wherein a ground line is provided on a lower end surface of the stator, and the ground line is connected to the snap.

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.