JP2023511481A - Frame structure, electromagnetic coil and electronic expansion valve - Google Patents

Abstract

The present application provides a skeleton structure, an electromagnetic coil and an electronic expansion valve, the skeleton structure including a cylinder, a first end plate, a second end plate, a holding part and a first waterproof part, and a first An end plate is provided at one end of the barrel and is used to limit the position of the coil wound around the barrel, and a second end plate is provided at the other end of the barrel and is used to wrap around the barrel. The retainer is provided on the edge of the first end plate and has an insertion hole for mounting a pin, and the side surface of the first end plate and the retainer. The side surfaces are all connected to the transition plate, the transition plate has an outer surface that is oblique to the axis of the insertion hole, and the first waterproof part is provided on the outer surface of the transition plate. It extends along the longitudinal direction of the outer surface. The transition plate thereby provides support and protection to the enameled wire to avoid damage to the enameled wire. The first waterproof portion on the outer surface of the transition plate improves the sealing effect by improving the fusion effect between the transition plate and the encapsulant. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present application relates to the technical field of electromagnetic coils, in particular to framework structures, electromagnetic coils and electronic expansion valves.

The electromagnetic coil in the electronic expansion valve is a power drive source that controls the valve body of the electronic expansion valve. A coil is wound around the skeleton of the electromagnetic coil, and the coil is connected to pins provided on the skeleton. Specifically, the skeletal structure includes a cylinder and a holding part, the coil is wound around the cylinder, the pin is provided on the holding part, and a part of the coil is wound and connected to the pin. The enamelled wire must extend from the barrel to the pin. In the conventional frame structure, the enameled wire extending from the cylinder to the pin lacks support and protection, so the enameled wire in this part is easily damaged or broken during manufacturing and use, affecting product quality. give. Also, if the edges of the scaffold structure and the encapsulant are poorly fused during manufacture, water will permeate the coil in a wet environment, causing coil failure or a safety hazard. Therefore, conventional scaffold structures need further improvement.

The present application provides a skeleton structure, an electromagnetic coil and an electronic expansion valve to improve the conventional skeleton structure.

To achieve the above objects, according to one aspect of the present application, the skeleton structure provided in the present application includes a cylinder used for winding a coil, and a cylinder provided at one end of the cylinder. A first end plate used to limit the position of the coil wound on the cylinder and a first end plate provided at the other end of the cylinder used to limit the position of the coil wound on the cylinder a second end plate; a retainer provided at the edge of the first end plate and having insertion holes for mounting the pins; and a transition plate having an outer surface oblique to the axis of the insertion hole; 1 waterproof part.

Furthermore, in the longitudinal direction perpendicular to the first waterproof part, the cross section of the first waterproof part has a V-shaped structure.

Furthermore, the first waterproof part has a groove structure, and the outer surface of the first end plate is provided with a first annular groove, and the first annular groove communicates with the first waterproof part. It is

Furthermore, there are two transition plates, one on each side of the holding part.

Further, the holding part includes a connection plate and a plurality of connection blocks provided on the connection plate at intervals, and each of the plurality of connection blocks is provided with one insertion hole. The sides are connected to the transition plate.

Furthermore, a chamfer is provided at the transition between the surface of the holding part facing the second end plate and the side surface of the holding part.

Furthermore, the skeleton structure further includes a second waterproof part, the second waterproof part extends to the holding part and the transition plate, the second waterproof part is a plurality, and the plurality of the second waterproof parts are set in parallel.

Furthermore, the second waterproof part has a concave groove structure, the opening of the second waterproof part is provided in the direction of separating the second end plate, and the extending direction of the second waterproof part is the insertion direction. There are at least three second watertight portions perpendicular to the axial direction of the hole.

According to another aspect of the present application, comprising a skeletal structure, a coil and a pin, wherein the skeletal structure is the above skeletal structure, the coil is wound around the tubular body of the skeletal structure, and the pin is a retainer of the skeletal structure A coil provides an electromagnetic coil connected to the pin.

According to another aspect of the present application, there is provided an electronic expansion valve including the electromagnetic coil described above.

A skeleton structure provided by applying the technical aspect of the present application includes a tubular body, a first end plate, a second end plate, a holding portion, and a first waterproof portion, wherein the tubular body includes a coil. A first end plate is provided at one end of the barrel and is used to limit the position of the coil wound on the barrel, and a second end plate is provided at the other end of the barrel. is provided and is used to limit the position of the coil wound on the cylinder, the holding part is provided at the edge of the first end plate and has an insertion hole for attaching a pin, Both the side surface of the first end plate and the side surface of the holding portion are connected to a transition plate, the transition plate has an outer surface oblique to the axis of the insertion hole, and the first waterproof portion is a transition plate. It is provided on the outer surface of the plate and extends along the longitudinal direction of the outer surface of the transition plate. When this aspect is adopted, since the transition plate is provided on the side surface of the first end plate and the holding portion, the transition plate supports and protects the portion of the enameled wire extending from the tubular body to the pin. can be provided, thereby avoiding damage or tearing of the enamelled wire. In addition, by providing the first waterproof portion on the outer surface of the transition plate, the fusion effect between the transition plate and the encapsulating material is improved when the frame structure is wrapped with the encapsulating material, thereby improving the sealing performance. to avoid entering the coil. Therefore, the above aspects improve the conventional skeleton structure and enhance the reliability and safety of the skeleton structure and the electromagnetic coil.

The drawings of the specification, which form part of the present application, are intended to provide a further understanding of the present application, and the schematic examples of the present application and their descriptions are used to interpret the present application. and does not constitute an undue limitation to this application.

1 shows a schematic representation of a framework structure provided in the examples of the present application. FIG. 2 shows a partially enlarged view of the skeleton structure in FIG. 1. FIG. 2 shows a top view of the skeleton structure in FIG. 1; FIG. Fig. 4 shows a cross-sectional view of the skeleton structure in Fig. 3; Fig. 5 shows a partially enlarged view of the skeleton structure in Fig. 4; Figure 2 shows another view of the skeleton structure in Figure 1; 1 shows a schematic diagram of an electromagnetic coil provided in an example of the present application; FIG. FIG. 4 shows another schematic diagram of an electromagnetic coil provided in the examples of the present application;

Here, the above drawings include the following reference numerals.
Reference Signs List 10 cylinder 21 coil 22 pin 23 injection structure 24 spacer 31 first end plate 32 second end plate 33 first annular groove 34 second annular groove 35 positioning block 40 Holding part 41 Connection plate 42 Connection block 43 Chamfer 44 Second waterproof part 50 Transition plate 51 First waterproof part.

Hereinafter, the technical aspects of the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. It is evident that the described embodiments are only a part of the embodiments of the present application and not all of the embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is not intended to be any limitation on the present application and its application or uses. All other embodiments obtained by persons skilled in the art based on the embodiments in the present application without creative effort shall fall within the protection scope of the present application.

As shown in the drawings, the skeleton structure provided in the embodiments of the present application includes a cylinder 10 used to wind the coil 21 and a coil 21 provided at one end of the cylinder 10 to be wound around the cylinder 10 . A first end plate 31 used to limit the position of the coil 21 and a position of the coil 21 provided at the other end of the cylinder 10 and wound around the cylinder 10. a second end plate 32; a holding portion 40 provided at the edge of the first end plate 31 and having an insertion hole for attaching the pin 22; A transition plate 50 having an outer surface connected to both of the side surfaces and obliquely provided with respect to the axis of the insertion hole, and a longitudinal direction of the outer surface of the transition plate 50 provided on the outer surface of the transition plate 50 and a first waterproof portion 51 extending along.

The skeleton structure provided in the technical aspect of the present application includes a barrel 10, a first end plate 31, a second end plate 32, a holding portion 40 and a first waterproof portion 51, where the barrel 10 is used to wind the coil 21, the first end plate 31 is provided at one end of the cylinder 10 and is used to limit the position of the coil 21 wound around the cylinder 10, and the second end is The plate 32 is provided at the other end of the barrel 10 and is used to limit the position of the coil 21 wound around the barrel 10, and the holding portion 40 is provided at the edge of the first end plate 31. The side surface of the first end plate 31 and the side surface of the holding part 40 are both connected to a transition plate 50, and the transition plate 50 is oblique to the axis of the insertion hole. The first waterproof portion 51 is provided on the outer surface of the transition plate 50 and extends along the longitudinal direction of the outer surface of the transition plate 50 . When this aspect is adopted, the transition plate 50 is provided on the side surface of the first end plate 31 and the holding portion 40, so that the transition plate 50 is provided with respect to the portion of the enameled wire extending from the tubular body 10 to the pin. provided support and protection, thereby avoiding damage or tearing of the enamelled wire. In addition, by providing the first waterproof portion 51 on the outer surface of the transition plate 50, the sealing performance is improved by improving the fusion effect between the transition plate 50 and the encapsulant when the frame structure is wrapped with the encapsulant. to prevent water from entering the coil 21. Therefore, the above aspects improve the conventional skeleton structure and enhance the reliability and safety of the skeleton structure and the electromagnetic coil.

In this embodiment, in the longitudinal direction perpendicular to the first waterproof part 51, the cross section of the first waterproof part 51 has a V-shaped structure. By setting the cross section of the first waterproof part 51 to have a V-shaped structure, it becomes easier for the molten encapsulant to enter, and the fusion effect and the sealing effect are improved. The encapsulant can be injection molded using plastic. The first waterproof part 51 in this embodiment can adopt a groove structure or a protrusion structure in order to improve the contact area and the fusion effect with the encapsulant.

Specifically, in the present embodiment, the first waterproof portion 51 has a concave groove structure, has a first annular groove 33 on the outer surface of the first end plate 31, and the first annular groove 33 and It communicates with the first waterproof part 51 . With the above arrangement, the encapsulant can well wrap the sides of the first end plate 31 and the transition plate 50, thus ensuring a good sealing effect and improving the waterproof performance.

Optionally, a second annular groove 34 is provided on the outer surface of the second end plate 32 . This improves the sealing effect due to the engagement between the second annular groove 34 and the encapsulant. Both the first annular groove 33 and the second annular groove are of V-shaped structure, which facilitates the infiltration of the molten encapsulant and improves the fusion and sealing effects.

In this embodiment, there are two transition plates 50 , and each of the two transition plates 50 is positioned on both sides of the holding portion 40 . This allows the two transition plates 50 to provide support and protection to the enamelled wire on either side of the retainer 40, respectively.

In this embodiment, the holding part 40 includes a connection plate 41 and a plurality of connection blocks 42 provided on the connection plate 41 at intervals, and each of the plurality of connection blocks 42 has one insertion hole. , and the side surface of the connecting plate 41 is connected to the transition plate 50 . Accordingly, a plurality of pins 22 can be provided on a plurality of connection blocks 42 to facilitate connection of wires. In addition, a plurality of connection blocks 42 may be provided on the connection plate 41 at intervals to further serve to increase the support and strength provided by the connection plate 41 .

In this embodiment, a chamfer 43 is provided at the transition position between the surface of the holding portion 40 facing the second end plate 32 and the side surface of the holding portion 40 . Due to the arrangement of the chamfers 43, the enameled wire is not caught when the enameled wire is wound, and the working efficiency is improved and the manufacturing is facilitated. Alternatively, the longitudinal direction of the chamfer 43 extends along the axial direction of the insertion hole. A side surface of the holding portion 40 extends along the axial direction of the insertion hole.

In the present embodiment, the skeleton structure further includes a second waterproof part 44, the second waterproof part 44 extends to the holding part 40 and the transition plate 50, the second waterproof part 44 is plural, and a plurality of The second waterproof part 44 of is provided in parallel. The arrangement of the second waterproof part 44 can improve the fusion effect when the encapsulant is injected, thereby improving the sealing effect and the waterproof effect. In the present embodiment, the second waterproof portion 44 has a concave groove structure, and the opening of the second waterproof portion 44 is provided in a direction separating the second end plate 32 .

Specifically, the extension direction of the second waterproof part 44 is perpendicular to the axial direction of the insertion hole, and there are at least three second waterproof parts 44 . At least three second waterproof parts 44 are provided and have a V-shaped structure, so that the sealing effect can be further improved. The second waterproof part is provided on the connection plate 41 .

Optionally, the skeletal structure further includes a positioning block 35 , which is protruded from the first end plate 31 or the second end plate 32 . The positioning of the positioning blocks 35 facilitates the positioning of the skeletal structure during assembly.

An electromagnetic coil provided in another embodiment of the present application includes a skeletal structure, a coil 21 and a pin 22, the skeletal structure being the above skeletal structure, the coil 21 being wound around the tubular body 10 of the skeletal structure. The pin 22 is provided on the holding portion 40 of the skeletal structure, and the coil 21 is connected to the pin 22 . When this aspect is adopted, the transition plate 50 is provided on the side surface of the first end plate 31 and the holding portion 40, so that the transition plate 50 is provided for the portion of the enameled wire extending from the cylindrical body 10 to the pin. provided support and protection, thereby avoiding damage or tearing of the enamelled wire. In addition, by providing the first waterproof portion 51 on the outer surface of the transition plate 50, the sealing performance is improved by improving the fusion effect between the transition plate 50 and the encapsulant when the frame structure is wrapped with the encapsulant. to prevent water from entering the coil 21. Therefore, this aspect improves the conventional skeleton structure and enhances the reliability and safety of the skeleton structure and the electromagnetic coil.

Alternatively, there are two skeletal structures, and the first end plates 31 of the two skeletal structures are provided facing each other. The electromagnetic coil further includes a spacer 24, which is provided between the two skeletal structures. The above arrangement facilitates assembly and structural distribution of the electromagnetic coil.

Optionally, the electromagnetic coil further includes an injection structure 23, which encloses the framework structure and structures such as the coil 21, so as to achieve insulation, waterproofing and fixing.

Since the pin 22 in the prior art is usually L-shaped, the space occupied by the pin 22 is relatively large, and the size of the injection structure 23 is relatively thick to wrap the pin 22, but the excessively thick injection layer has no pores. It is likely to occur, and the insulation performance of the coil will be poor. In order to solve this problem, the pin 22 in this embodiment is optionally linear, and by setting the pin 22 to be linear, the space occupied by the pin 22 is reduced, so that the injection structure 23 thickness can be reduced to avoid porosity and improve injection quality to improve product quality.

Another embodiment of the present application provides an electronic expansion valve including the electromagnetic coil described above. Adopting the electromagnetic coil described above improves the sealing performance and improves the reliability and safety of the electronic expansion valve.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application, and those skilled in the art may make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall all fall within the protection scope of this application.

Claims (10)

a cylinder (10) used for winding the coil (21);
a first end plate (31) provided at one end of the tubular body (10) and used to limit the position of the coil (21) wound around the tubular body (10);
a second end plate (32) provided at the other end of the tubular body (10) and used to limit the position of the coil (21) wound around the tubular body (10);
a holding part (40) provided at the edge of the first end plate (31) and having an insertion hole for mounting the pin (22);
A transition plate (50) connected to both the side surface of the first end plate (31) and the side surface of the holding portion (40) and having an outer surface provided obliquely to the axis of the insertion hole )and,
a first waterproof part (51) provided on the outer surface of the transition plate (50) and extending along the longitudinal direction of the outer surface of the transition plate (50);
skeletal structure. In the longitudinal direction perpendicular to the first waterproof part (51), the cross section of the first waterproof part (51) has a V-shaped structure,
The skeleton structure according to claim 1. The first waterproof part (51) has a groove structure, and the outer surface of the first end plate (31) is provided with a first annular groove (33). The annular groove (33) communicates with the first waterproof part (51),
The skeleton structure according to claim 1. There are two transition plates (50), and each of the two transition plates (50) is located on both sides of the holding part (40),
The skeleton structure according to claim 1. The holding part (40) includes a connection plate (41) and a plurality of connection blocks (42) provided on the connection plate (41) at intervals. one insertion hole is provided in each, and the side surface of the connection plate (41) is connected to the transition plate (50),
The skeleton structure according to claim 1. A chamfer (43) is provided at a transition position between the surface of the holding portion (40) facing the second end plate (32) and the side surface of the holding portion (40),
The skeleton structure according to claim 1. further comprising a second waterproofing portion (44), said second waterproofing portion (44) extending to said retaining portion (40) and said transition plate (50), said second waterproofing portion (44) is plural, and the plural second waterproof parts (44) are provided in parallel,
The skeleton structure according to claim 1. The second waterproof part (44) has a concave groove structure, and the opening of the second waterproof part (44) is provided in a direction separating the second end plate (32). The extending direction of the second waterproof part (44) is perpendicular to the axial direction of the insertion hole, and the number of the second waterproof parts (44) is at least three.
The skeleton structure according to claim 7. including a skeletal structure, coils (21) and pins (22),
The skeletal structure is the skeletal structure according to any one of claims 1 to 8, wherein the coil (21) is wound around a cylinder (10) of the skeletal structure and the pin (22) is provided on a retaining portion (40) of the framework, and the coil (21) is connected to the pin (22);
electromagnetic coil. An electronic expansion valve comprising the electromagnetic coil of claim 9 .

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