阅读说明：本技术 电子膨胀阀线圈及其制备方法 (Electronic expansion valve coil and preparation method thereof ) 是由 何永水 何泽淼 张永涛 于 2021-09-01 设计创作，主要内容包括：本发明涉及一种电子膨胀阀线圈及其制备方法；电子膨胀阀线圈,包括：定子组件和外壳；外壳包裹定子组件；定子组件包括：上线圈架、上定子线圈、下线圈架、下定子线圈、中极板、内壳和多个引脚；上定子线圈缠绕上线圈架；下定子线圈缠绕下线圈架；中极板位于上线圈架和下线圈架之间；上线圈架形成有上定位板部；下线圈架形成有下定位板部；上定位板部的底部形成有若干个条相互平行的上筋；下定位板部的顶部形成有若干个条相互平行的下筋；上筋和下筋在高度上间隔设置且上筋不平行于下筋；上定位板部和下定位板部之间填充密封胶包裹上筋和下筋。本发明的有益之处在于,提升灌胶过程中胶的流动性避免胶体堵塞,从而使填充更加充实。(The invention relates to an electronic expansion valve coil and a preparation method thereof; an electronic expansion valve coil comprising: a stator assembly and a housing; the stator component is wrapped by the shell; the stator assembly includes: the coil comprises an upper coil frame, an upper stator coil, a lower coil frame, a lower stator coil, a middle polar plate, an inner shell and a plurality of pins; the upper stator coil is wound on the upper coil rack; the lower stator coil is wound on the lower coil frame; the middle pole plate is positioned between the upper coil frame and the lower coil frame; the upper coil frame is provided with an upper positioning plate part; the lower coil frame is provided with a lower positioning plate part; a plurality of parallel upper ribs are formed at the bottom of the upper positioning plate part; the top of the lower positioning plate part is provided with a plurality of lower ribs which are parallel to each other; the upper ribs and the lower ribs are arranged at intervals in height, and the upper ribs are not parallel to the lower ribs; go up and fill sealed glue parcel rib and lower muscle between locating plate portion and the lower locating plate portion. The filling device has the beneficial effects that the fluidity of glue in the glue filling process is improved, so that the glue is prevented from being blocked, and the filling is more full.)

1. An electronic expansion valve coil comprising: a stator assembly and a housing; the outer shell wraps the stator assembly; the stator assembly includes: the coil comprises an upper coil frame, an upper stator coil, a lower coil frame, a lower stator coil, a middle polar plate, an inner shell and a plurality of pins; the upper stator coil is wound on the upper coil frame; the lower stator coil is wound around the lower bobbin; the middle polar plate is positioned between the upper coil frame and the lower coil frame; the upper coil frame is provided with an upper positioning plate part; the lower coil frame is provided with a lower positioning plate part; the upper positioning plate part and the lower positioning plate part jointly fix the pins; the inner shell wraps the upper stator coil and the lower stator coil;

the bottom of the upper positioning plate part is provided with a plurality of parallel upper ribs; the top of the lower positioning plate part is provided with a plurality of lower ribs which are parallel to each other; the upper ribs and the lower ribs are arranged at intervals in height, and the upper ribs are not parallel to the lower ribs; and a sealant is filled between the upper positioning plate part and the lower positioning plate part to wrap the upper rib and the lower rib.

2. The electronic expansion valve coil of claim 1,

the upper ribs form an upper rib group; the lower ribs form a lower rib group; the upper rib group is aligned with the lower rib group.

3. The electronic expansion valve coil of claim 1,

the number of the upper ribs is two; the number of the lower ribs is two.

4. The electronic expansion valve coil of claim 3,

one of the two upper bars intersects one of the two lower bars and the other of the two upper bars intersects the other of the two lower bars in a projection in a direction along a center line of the upper stator coil.

5. The electronic expansion valve coil of claim 1,

the upper ribs are inclined to the extending direction of the pins; the lower ribs are inclined to the extending direction of the pins.

6. The electronic expansion valve coil of claim 5,

the included angle between the upper rib and the extending direction of the pins is equal to the included angle between the lower rib and the extending direction of the pins.

7. The electronic expansion valve coil of claim 1,

the distance between two adjacent upper ribs is equal to the distance between two adjacent lower ribs.

8. The electronic expansion valve coil of claim 1,

the cross sections of the upper rib and the lower rib are both triangular.

9. The electronic expansion valve coil of claim 1,

the upper rib and the lower rib have the same structure.

10. A method for manufacturing a coil for an electronic expansion valve according to any one of claims 1 to 9, comprising the steps of;

assembling the stator assembly;

glue is filled between the upper positioning plate part and the lower positioning plate part from two sides so as to fix the upper positioning plate part and the lower positioning plate part into a whole and hermetically fix the inner shell;

and preparing a shell wrapping the stator assembly through an injection molding process.

Technical Field

The invention relates to the technical field of electronic expansion valves, in particular to an electronic expansion valve coil and a preparation method thereof.

Background

The electronic expansion valve mainly comprises a valve body component and an electronic expansion valve coil. The valve body part is equivalent to a rotor part of a stepping motor, the electronic expansion valve coil is equivalent to a stator part of the stepping motor, and a pulse driving signal is applied to the coil winding to generate a regular magnetic field on the claw sheet of the coil magnetizer so as to drive the rotor inside the valve body part to rotate, so that the flow at the valve port of the valve body part is adjusted, and the control of the refrigerant flow in the system is realized.

The electronic expansion valve coil includes: a stator assembly and a housing. The stator assembly is wrapped by the shell. The stator assembly includes: the coil comprises an upper coil frame, an upper stator coil, a lower coil frame, a lower stator coil, a middle polar plate, an inner shell and a plurality of pins. The upper stator coil is wound around the upper bobbin. The lower stator coil is wound around the lower bobbin. The middle pole plate is located between the upper coil former and the lower coil former. The upper coil frame is formed with an upper positioning plate portion. The lower bobbin is formed with a lower positioning plate portion. The upper positioning plate portion and the lower positioning plate portion fix the pins together. The inner shell wraps the upper stator coil and the lower stator coil.

The stator assembly needs to be glue filled. And sealant is required to be filled between the upper positioning plate part and the lower positioning plate part to realize sealing. The opposite side of the upper and lower retainer plates is typically ribbed for added strength. Traditional muscle position sets up unreasonablely, produces the bad condition of packing easily, influences the sealed effect of encapsulating.

Disclosure of Invention

The present invention is directed to an electronic expansion valve coil and a method for manufacturing the same, so as to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

an electronic expansion valve coil comprising: a stator assembly and a housing; the stator component is wrapped by the shell; the stator assembly includes: the coil comprises an upper coil frame, an upper stator coil, a lower coil frame, a lower stator coil, a middle polar plate, an inner shell and a plurality of pins; the upper stator coil is wound on the upper coil rack; the lower stator coil is wound on the lower coil frame; the middle pole plate is positioned between the upper coil frame and the lower coil frame; the upper coil frame is provided with an upper positioning plate part; the lower coil frame is provided with a lower positioning plate part; the upper positioning plate part and the lower positioning plate part jointly fix the pins; the inner shell wraps the upper stator coil and the lower stator coil;

a plurality of parallel upper ribs are formed at the bottom of the upper positioning plate part; the top of the lower positioning plate part is provided with a plurality of lower ribs which are parallel to each other; the upper ribs and the lower ribs are arranged at intervals in height, and the upper ribs are not parallel to the lower ribs; go up and fill sealed glue parcel rib and lower muscle between locating plate portion and the lower locating plate portion.

As a further scheme of the invention: the upper ribs form an upper rib group; the lower ribs form a lower rib group; the upper rib group is aligned with the lower rib group.

As a further scheme of the invention: the number of the upper ribs is two; the number of the lower ribs is two.

As a further scheme of the invention: in a projection in a direction along a center line of the upper stator coil, one of the two upper bars intersects one of the two lower bars and the other of the two upper bars intersects the other of the two lower bars.

As a further scheme of the invention: the upper ribs are inclined to the extending direction of the pins; the lower ribs are inclined to the extending direction of the pins.

As a further scheme of the invention: the included angle between the upper rib and the extending direction of the pins is equal to the included angle between the lower rib and the extending direction of the pins.

As a further scheme of the invention: the distance between two adjacent upper ribs is equal to the distance between two adjacent lower ribs.

As a further scheme of the invention: the cross sections of the upper rib and the lower rib are both triangular.

As a further scheme of the invention: the upper and lower ribs have the same structure.

An electronic expansion valve comprising: the electronic expansion valve coil.

A preparation method of the electronic expansion valve coil comprises the following steps;

assembling a stator assembly;

glue is filled between the upper positioning plate part and the lower positioning plate part from two sides so as to fix the upper positioning plate part and the lower positioning plate part into a whole and hermetically fix the inner shell;

the housing encasing the stator assembly is prepared by an injection molding process.

Compared with the prior art, the invention has the beneficial effects that: the fluidity of glue in the glue filling process is improved, so that the glue is prevented from being blocked, and the filling is more full.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of an electronic expansion valve according to the present invention;

FIG. 2 is a schematic view from another perspective of the electronic expansion valve of FIG. 1;

FIG. 3 is a schematic view of a stator assembly of the electronic expansion valve of FIG. 1;

FIG. 4 is an exploded view of the stator assembly of FIG. 3;

FIG. 5 is a schematic view of a partial structure of the stator assembly of FIG. 4;

FIG. 6 is an enlarged partial view of the structure of FIG. 5;

FIG. 7 is an exploded view of the structure of FIG. 5;

FIG. 8 is an exploded view from another perspective of the structure of FIG. 5;

fig. 9 is a schematic view showing the structure of fig. 5 in which the side where the upper bobbin and the lower bobbin are close to each other is laid flat on the same plane after the middle plate is removed.

List of reference numerals: the electronic expansion valve coil 100, the stator assembly 10, the upper coil frame 11, the upper positioning plate portion 111, the upper rib 112, the upper stator coil 12, the lower coil frame 13, the lower positioning plate portion 131, the lower rib 132, the lower stator coil 14, the middle pole plate 15, the inner shell 16, the pin 17 and the outer shell 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 9, in an embodiment of the present invention, as shown in fig. 1 to 9, an electronic expansion valve includes: an electronic expansion valve coil 100 and a valve body component. The electronic expansion valve coil 100 corresponds to a stator and the valve body member corresponds to a rotor. An electronic expansion valve coil 100 comprising: a stator assembly 10 and a housing 20. The outer casing 20 encases the stator assembly 10. Specifically, the housing 20 is an injection molded part, and the housing 20 is integrally injection molded to wrap the stator assembly 10.

The stator assembly 10 includes: an upper bobbin 11, an upper stator coil 12, a lower bobbin 13, a lower stator coil 14, a middle pole plate 15, an inner case 16, and a plurality of pins 17. The upper stator coil 12 is wound around the upper bobbin 11. The lower stator coil 14 is wound around the lower bobbin 13. The middle plate 15 is located between the upper bobbin 11 and the lower bobbin 13. Specifically, the middle pole plate 15 is formed with a plurality of claw pieces. The inner shell 16 is formed with a plurality of claw pieces. The claw sheets of the middle pole plate 15 and the claw sheets of the inner shell 16 are arranged at intervals. Specifically, the middle plate 15 is composed of upper and lower portions. Also, the inner case 16 is composed of upper and lower portions. The claw pieces of the two parts respectively extend into the central hole of the upper coil frame 11 and the central hole of the lower coil frame 13.

As a specific embodiment, the upper bobbin 11 is formed with an upper positioning plate portion 111. The lower bobbin 13 is formed with a lower positioning plate portion 131. The upper and lower retainer plate portions 111 and 131 collectively fix the pins 17. The inner case 16 encloses the upper stator coil 12 and the lower stator coil 14. Specifically, the inner case 16 forms a through hole through which the upper and lower positioning plate portions 111 and 131 pass. The through holes are filled with glue to close the upper and lower positioning plate portions 111 and 131 and the inside of the inner case 16.

In a preferred embodiment, the bottom of the upper positioning plate 111 is formed with a plurality of upper ribs 112 parallel to each other. The top of the lower positioning plate portion 131 is formed with a plurality of lower ribs 132 parallel to each other. The upper ribs 112 and the lower ribs 132 are spaced apart in height and the upper ribs 112 are not parallel to the lower ribs 132. The upper rib 112 and the lower rib 132 are filled with sealant between the upper positioning plate part 111 and the lower positioning plate part 131. The upper rib 112 and the lower rib 132 are arranged to increase the strength and prevent the glue from being mistakenly separated during glue filling. Go up the mode that muscle 112 and lower muscle 132's nonparallel set up, compare parallel arrangement's mode, adjust line contact into the mode of point contact, promote the mobility of encapsulating in-process glue and avoid the colloid to block up to it is more abundant to make the packing.

In a preferred embodiment, a plurality of upper ribs 112 form an upper rib group. The plurality of lower ribs 132 constitute a lower rib group. The upper set of ribs 112 are aligned with the lower set of ribs. The number of the upper ribs 112 is two. The number of the lower ribs 132 is two. In a projection in the direction along the center line of the upper stator coil 12, one of the two upper ribs 112 intersects one of the two lower ribs 132 and the other of the two upper ribs 112 intersects the other of the two lower ribs 132. The muscle 112 and the lower muscle 132 of going up that correspond are the crossing mode that sets up of projection, realize that the point contact is compared muscle 112 and the mode of muscle 132 projection coincidence down, promote the mobility of encapsulating in-process glue and avoid the colloid to block up.

As a specific embodiment, the upper rib 112 is inclined to the extending direction of the pin 17. The lower ribs 132 are inclined to the extending direction of the pins 17. The angle between the upper rib 112 and the extending direction of the lead 17 is equal to the angle between the lower rib 132 and the extending direction of the lead 17. Specifically, the distance between two adjacent upper ribs 112 is equal to the distance between two adjacent lower ribs 132. Specifically, the upper rib 112 and the lower rib 132 are both triangular in cross section. The upper ribs 112 and the lower ribs 132 are identical in structure. As a preferred embodiment, the upper bobbin 11 and the lower bobbin 13 are identical in structure.

As a preferred embodiment, the method for preparing the electronic expansion valve coil 100 comprises the following steps:

assembling the stator assembly 10;

glue is poured between the upper positioning plate part 111 and the lower positioning plate part 131 from two sides so as to fix the upper positioning plate part 111 and the lower positioning plate part 131 into a whole and seal and fix the inner shell 16;

the housing 20 surrounding the stator assembly 10 is prepared by an injection molding process.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.