Grounding structure of expansion valve coil

Abstract

The utility model relates to a grounding structure of an expansion valve coil, which comprises a coil and a metal magnetic isolation sleeve arranged in the coil in a penetrating manner, the coil comprises two coil windings which are arranged in an overlapped manner, two groups of coil frameworks which are oppositely arranged are arranged between the two windings, each coil framework comprises a polar plate shell connected with the coil, and the polar plate shells are connected with the metal magnetic isolation sleeve. A plurality of claw teeth are evenly arranged on the inner wall of the pole plate shell, the two claw teeth on the two coil frameworks are connected with the upper portion and the lower portion of the metal magnetic isolation sleeve respectively, the claw teeth of the coil frameworks are inclined in the radial direction and make effective contact with the metal magnetic isolation sleeve, and therefore the grounding function is achieved, the grounding structure is simple and reasonable, and the grounding effect is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to expansion valve technical field especially relates to a kind of grounding structure of expansion valve coil. BACKGROUND

[0002] With the development of science and technology, transformer, inductor and other devices have been more widely used in today's society.In transformer, inductor and other such devices, electronic expansion valve plays an important role.

[0003] In electric vehicle thermal management system, electronic expansion valve is mainly used in air conditioning system and battery thermal management system.Electronic expansion valve is composed of controller, actuator and sensor.Thus, electronic expansion valve can accurately reflect the change of overheating degree at low temperature and provide more accurate flow regulation, while it has large flow control range, sensitive response, rapid action and fine regulation, which makes up for the shortcomings of capillary and thermal expansion valve that cannot be regulated, and is more suitable for electronic control and fine management of electric vehicles.

[0004] Currently, in order to facilitate the connection of valve body and coil, an outwardly protruding fixing plate is usually provided on the shell of coil, the positioning sheet is fixed on the shell of coil through the fixing plate, and finally the axial positioning and circumferential positioning of valve body and coil are realized through the positioning sheet.Moreover, the positioning sheet is used for grounding.As the positioning sheet in the prior art is a separate structure, it needs to be connected with the fixing plate and the shell of coil through riveting or welding, so the grounding structure is complex and the grounding effect is unstable. UTILITY MODEL CONTENTS

[0005] The utility model aims at the shortcomings of prior art, and provides a kind of grounding structure of expansion valve coil, claw tooth of coil framework is radially inclined, claw tooth is effectively contacted with metal magnetic shielding sleeve, to realize the function of grounding, and the grounding structure is simple and reasonable, and the grounding effect is stable.

[0006] To achieve the purpose, the utility model adopts the technical scheme of:

[0007] A kind of grounding structure of expansion valve coil, including coil and metal magnetic shielding sleeve, the coil includes two coil windings placed in stack, two windings are provided with two groups of coil framework oppositely arranged between two windings, the coil framework includes the polar plate shell connected with coil, the polar plate shell inner wall is uniformly provided with a plurality of claw tooth, two claw tooth on two groups of coil framework are connected with the upper portion and lower portion of the metal magnetic shielding sleeve respectively.

[0008] As a further optimization of the above technical solution: the coil shell is provided on the outer of the two coil windings of the coil, and the coil shell inner wall is provided with a plurality of connecting pieces staggered with the claw tooth.

[0009] As a further optimization of the above technical solutions: the claw tooth top is provided with a chamfer or a round corner with a radius of 1mm.

[0010] As a further optimization of the above technical solutions: the claw tooth is radially inclined to the metal magnetic shielding sleeve at an angle ≥1°.

[0011] Compared with the prior art, the utility model discloses a coil and the metal magnetic shielding sleeve of wearing in the coil, the coil includes two superimposed coil winding, and is equipped with two groups of opposite setting coil skeleton between two winding, the coil skeleton includes the polar plate shell of being connected with the coil, the polar plate shell inner wall evenly is equipped with a plurality of claw tooth, two claw tooth on two coil skeletons are connected with the upper portion and lower portion of metal magnetic shielding sleeve respectively, and the stable grounding effect is guaranteed through the stable contact of claw tooth 4 and metal magnetic shielding sleeve 2 to the radial inclination of claw tooth 4 of coil skeleton 3 and the effective contact of claw tooth 4 with metal magnetic shielding sleeve 2, thereby realizing the function of grounding, and the grounding structure is simple and reasonable, and the grounding effect is stable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model.

[0013] Figure 2 It is the exploded structural schematic diagram of the utility model. CONCRETE EMBODIMENT

[0014] The utility model is further explained below in combination with the drawings and concrete embodiment.

[0015] As Figure 1 , 2 As shown in a kind of expansion valve coil grounding structure, including coil 1 and the metal magnetic shielding sleeve 2 of wearing in coil 1, the coil 1 is equipped with coil skeleton 3, the claw tooth 4 is equipped on the coil skeleton 3, the claw tooth 4 is radially inclined to the metal magnetic shielding sleeve 2 and forms grounding to contact, through the radial inclination of claw tooth 4 of coil skeleton 3, make claw tooth 4 with metal magnetic shielding sleeve 2 effective contact, thereby realizing the function of grounding, and the grounding structure is simple and reasonable, and the grounding effect is stable.

[0016] In the embodiment, the coil skeleton 3 includes the polar plate shell 31 connected with the coil 1, the polar plate shell 31 inner wall is evenly equipped with a plurality of claw tooth 4, the claw tooth 4 top is provided with the chamfer or the round corner with a radius of 1mm, facilitate the angle of claw tooth 4 when avoiding empty, the claw tooth 4 is radially inclined to the metal magnetic shielding sleeve 2 at an angle ≥1°, and the chamfer of claw tooth 4 top and the radially inclined angle of claw tooth 4 to the metal magnetic shielding sleeve 2 are cooperatively arranged, to facilitate the stable contact of claw tooth 4 and metal magnetic shielding sleeve 2, thereby guaranteeing stable grounding effect.

[0017] In the embodiment, the coil 1 comprises two coil windings placed in superposition, two sets of coil skeletons 3 are arranged between the two coil windings, two pawls 4 on the two sets of coil skeletons 3 are respectively connected with upper and lower parts of the metal magnetic isolation sleeve 2, coil housings 5 are arranged outside the two coil windings of the coil 1, a plurality of connecting pieces 6 are arranged on the inner wall of the coil housing 5 and are staggered with the pawls 4, and the two pawls 4 are simultaneously connected with the metal magnetic isolation sleeve 2, so that the pawls 4 can be further stably contacted with the metal magnetic isolation sleeve 2.

[0018] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the existing technology according to the concept of the present application shall fall within the protection scope of the present application.

Claims

1. An expansion valve coil ground structure, characterized by: The coil comprises two coil windings arranged in a superposition, and two sets of coil skeletons arranged oppositely between the two windings, the coil skeleton comprises a pole plate shell connected with the coil, and the inner wall of the pole plate shell is uniformly provided with a plurality of paw teeth, and the two paw teeth on the two sets of coil skeletons are connected with the upper part and the lower part of the metal magnetic isolation sleeve respectively.

2. An expansion valve coil grounding structure as set forth in claim 1, further characterized by: The coil shell is provided with a plurality of connecting pieces arranged staggeredly with the paw teeth on the inner wall.

3. An expansion valve coil grounding structure as set forth in claim 1, wherein: The angle of the paw teeth inclined to the metal magnetic isolation sleeve is greater than or equal to 1°.

4. An expansion valve coil grounding structure as set forth in claim 1, further characterized by: The top end of the paw teeth is provided with a chamfer or a round corner with a radius of 1 mm.

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