Electronic expansion valve grounding structure

Abstract

The utility model provides an electronic expansion valve grounding structure which comprises a shell, the shell is arranged to be a hollow cavity, a coil is arranged in the shell, an outer shell is arranged on the outer side of the shell, a clamping groove is formed in the outer shell, a grounding piece is arranged in the clamping groove, and the grounding piece abuts against the shell. According to the utility model, the grounding piece is clamped in the clamping groove, the grounding piece is connected with the shell, and the shell is conductively connected with the circuit board through the grounding piece, so that the installation difficulty of the grounding piece is reduced, the production efficiency is improved, the maintenance and replacement are convenient, and the maintenance convenience is improved.

Description

Technical Field

[0001] This utility model belongs to the field of electronic expansion valve technology, specifically relating to a grounding structure for an electronic expansion valve. Background Technology

[0002] Electronic expansion valves are primarily used in air conditioning systems. An electronic expansion valve consists of a coil and an iron core. When the coil is energized, it generates magnetic force, controlling the rotor's movement, which in turn controls the valve's operation. The outer casing of the electronic expansion valve is typically made of metal to protect the internal components. During operation, the electromagnetic field generated by the internal coil may interfere with surrounding electrical equipment, and other electrical equipment in the working environment may also interfere with the electronic expansion valve. Therefore, it is necessary to ground the casing to shield the internal components of the electronic expansion valve from the surrounding environment. Existing grounding methods typically involve connecting the grounding component to the casing first, followed by injection molding. This method is complex to install, affects injection molding quality, and if the grounding component is damaged or malfunctions during subsequent use, it cannot be disassembled and replaced, increasing maintenance costs.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a grounding structure for an electronic expansion valve, which is easy to install, has high production efficiency, is easy to maintain and replace, and improves the convenience of maintenance.

[0005] Technical Solution: To achieve the above objectives, this utility model provides a grounding structure for an electronic expansion valve, including a housing. The housing is a hollow cavity, and a coil is disposed inside the housing. An outer shell is provided on the outside of the housing, and the outer shell has a slot. A grounding component is disposed in the slot, and the grounding component abuts against the housing. This utility model connects the grounding component to the housing by inserting it into the slot, making the housing electrically connected to the circuit board through the grounding component. This installation method reduces the difficulty of installing the grounding component, improves production efficiency, and facilitates maintenance and replacement, thus improving the convenience of maintenance.

[0006] Furthermore, in the aforementioned electronic expansion valve grounding structure, the grounding component is Z-shaped. One end of the grounding component, which snaps into the housing, has an elastic portion. One end of the elastic portion is integrally connected to the grounding component, while the end of the elastic portion away from the grounding component tilts towards the housing, abutting against the housing. The grounding component abuts against the housing through the elastic portion, resulting in a compact structure that facilitates installation and maintenance. The elastic portion compensates for dimensional errors between the grounding component and the housing, ensuring a tight electrical connection and guaranteeing grounding effectiveness. Simultaneously, when the electronic expansion valve is subjected to impact vibration, the elastic portion absorbs and disperses energy, preventing loosening and ensuring grounding stability.

[0007] Furthermore, in the aforementioned electronic expansion valve grounding structure, the end of the grounding component that snaps into the outer casing has a protrusion, which is inclined upwards. The protrusion increases the friction between the grounding component and the outer casing, preventing it from loosening due to vibration, ensuring a stable connection between the grounding component and the outer casing, and ensuring the grounding effect.

[0008] Furthermore, in the aforementioned electronic expansion valve grounding structure, there are two or more protrusions, symmetrically arranged on both sides of the grounding component. The symmetrical arrangement of multiple protrusions ensures connection strength, prevents loosening, and guarantees effective grounding.

[0009] Furthermore, in the aforementioned electronic expansion valve grounding structure, the end of the grounding component furthest from the housing is designated as a pin. A pin is connected to the housing, with the pin and the grounding component arranged parallel to each other. The pin, the grounding component, and the circuit board are connected, facilitating integration and improving installation convenience.

[0010] Furthermore, in the aforementioned electronic expansion valve grounding structure, the middle part of the grounding component abuts against the bottom surface of the slot. The slot is provided with a first clearance cavity, which is connected to the housing. One end of the grounding component is inserted into the first clearance cavity, and the elastic part abuts against the housing. The grounding component being inserted into the first clearance cavity enhances the structural strength, enabling the grounding component to withstand greater external forces and ensuring grounding stability.

[0011] Furthermore, in the aforementioned electronic expansion valve grounding structure, a second clearance cavity is provided at the end of the slot away from the first clearance cavity, and the middle section of the grounding component is located within the second clearance cavity. The middle section of the grounding component has a shoulder that abuts against the side wall of the slot, improving lateral stability, reducing swaying, and ensuring grounding stability.

[0012] Furthermore, in the above-mentioned electronic expansion valve grounding structure, an injection ring is provided inside the housing, a coil is provided around the injection ring, and a fixing part is provided on the injection ring. The pin passes through the fixing part and is electrically connected to the coil.

[0013] Furthermore, in the above-mentioned electronic expansion valve grounding structure, the injection ring includes a first injection molded part and a second injection molded part, which are coaxially arranged. The first injection molded part is provided with a first fixing part, and the second injection molded part is provided with a second fixing part. The first fixing part and the second fixing part are arranged crosswise to improve the connection stability of the first fixing part and the second fixing part and reduce the shaking of the grounding component.

[0014] Furthermore, in the above-mentioned grounding structure of the electronic expansion valve, the connection stability is improved by riveting the grounding component and the housing.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: The grounding structure of this utility model's electronic expansion valve, by inserting the grounding component into a slot and connecting the grounding component to the housing, allows the housing to be electrically connected to the circuit board through the grounding component. This installation method reduces the difficulty of installing the grounding component, improves production efficiency, and facilitates maintenance and replacement, thus enhancing maintenance convenience. The grounding component abuts against the housing through an elastic part, resulting in a compact structure that is convenient for installation and maintenance. The elastic part can compensate for dimensional errors between the grounding component and the housing, ensuring a tight electrical connection and guaranteeing the grounding effect. Furthermore, when the electronic expansion valve is subjected to impact vibration, the elastic part can absorb and disperse energy, preventing loosening and ensuring grounding stability. The protrusion on the grounding component increases friction between the grounding component and the housing, preventing loosening due to vibration and ensuring a stable connection between the grounding component and the housing, thus guaranteeing the grounding effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the grounding structure of the electronic expansion valve of this utility model;

[0017] Figure 2 This is an internal schematic diagram of the grounding structure of the electronic expansion valve of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the grounding component;

[0019] Figure 4 for Figure 1 A magnified view of a portion of the image;

[0020] Figure 5 This is a schematic diagram of the injection ring structure;

[0021] Figure 6 This is a schematic diagram of the grounding structure of the electronic expansion valve of this utility model.

[0022] In the figure: 1. Housing, 3. Outer shell, 31. Slot, 311. First clearance cavity, 312. Second clearance cavity, 4. Grounding component, 41. Elastic part, 42. Protrusion, 43. Needle part, 44. Shoulder part, 5. Insertion pin, 6. Injection ring, 61. First injection molded part, 611. First fixing part, 62. Second injection molded part, 621. Second fixing part. Detailed Implementation

[0023] Example 1

[0024] like Figure 1-2The illustrated grounding structure for an electronic expansion valve includes a housing 1, which is a hollow cavity containing a coil. An outer shell 3 is located on the outside of the housing 2, and the outer shell 3 has a slot 31. A grounding component 4 is located within the slot 31 and abuts against the housing 1. This invention connects the grounding component 4 to the housing 1 by inserting it into the slot 31, thus electrically connecting the housing 4 to the circuit board via the grounding component 4.

[0025] like Figure 3 The grounding structure of the electronic expansion valve shown has a Z-shaped grounding component 4. One end of the grounding component 4, which is inserted into the housing 3, has an elastic part 41. One end of the elastic part 41 is integrally connected to the grounding component 4. The end of the elastic part 41 away from the grounding component 4 is inclined towards the housing 1, and the elastic part 41 abuts against the housing 1. The end of the grounding component 4 that is inserted into the housing 3 has a protrusion 42, which is inclined upwards. There are two or more protrusions 42, symmetrically arranged on both sides of the grounding component 4. The end of the grounding component 4 away from the housing 1 is a needle part 43. The housing 3 is connected to a pin 5, with the needle part 43 and the pin 5 arranged parallel to each other.

[0026] like Figure 4 The grounding structure of the electronic expansion valve shown has a grounding member 4 whose middle part abuts against the bottom surface of the slot 31. The slot 31 has a first clearance cavity 311, which is connected to the housing 1. One end of the grounding member 4 is inserted into the first clearance cavity 311, and the elastic part 41 abuts against the housing 1. A second clearance cavity 312 is provided at the end of the slot 31 away from the first clearance cavity 311, and the middle section of the grounding member 4 is located in the second clearance cavity 312. The middle section of the grounding member 4 has a shoulder 44, which abuts against the side wall of the slot 31.

[0027] like Figure 5 The grounding structure of the electronic expansion valve shown includes an injection ring 6 inside the housing 1, with a coil wound around it. The injection ring 6 has a fixing part, and a pin 5 passes through the fixing part and is electrically connected to the coil. The injection ring 6 includes a first injection molded part 61 and a second injection molded part 62, which are coaxially arranged. The first injection molded part 61 has a first fixing part 611, and the second injection molded part 62 has a second fixing part 621. The first fixing part 611 and the second fixing part 621 are arranged intersectingly.

[0028] Example 2

[0029] The difference between this embodiment and Embodiment 1 is that, Figure 6 The grounding structure of the electronic expansion valve shown is such that the grounding component 4 and the housing 1 are riveted together.

[0030] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A grounding structure for an electronic expansion valve, characterized in that: Includes a housing (1), the housing (1) is a hollow cavity, a coil is provided inside the housing (1), an outer shell (3) is provided on the outside of the housing (1), the outer shell (3) is provided with a slot (31), a grounding component (4) is provided inside the slot (31), and the grounding component (4) abuts against the housing (1).

2. The grounding structure of the electronic expansion valve according to claim 1, characterized in that: The grounding component (4) is designed in a Z-shape. One end of the grounding component (4) is inserted into the outer shell (3) and has an elastic part (41). One end of the elastic part (41) is integrally connected with the grounding component (4). The end of the elastic part (41) away from the grounding component (4) is inclined toward the shell (1) and the elastic part (41) abuts against the shell (1).

3. The grounding structure of the electronic expansion valve according to claim 1, characterized in that: The grounding component (4) is inserted into the outer shell (3) and has a protrusion (42) at one end, which is inclined upward.

4. The grounding structure of the electronic expansion valve according to claim 3, characterized in that: The protrusion (42) is provided in two or more parts, and the protrusion (42) is symmetrically arranged on both sides of the grounding member (4).

5. The grounding structure of the electronic expansion valve according to claim 1, characterized in that: The grounding component (4) is provided with a needle (43) at the end away from the housing (1); the housing (3) is connected to a pin (5), and the needle (43) and the pin (5) are arranged in parallel.

6. The grounding structure of the electronic expansion valve according to claim 2, characterized in that: The middle part of the grounding component (4) abuts against the bottom surface of the slot (31). The slot (31) is provided with a first clearance cavity (311). The first clearance cavity (311) is connected to the housing (1). One end of the grounding component (4) is inserted into the first clearance cavity (311). The elastic part (41) abuts against the housing (1).

7. The grounding structure of the electronic expansion valve according to claim 6, characterized in that: The slot (31) is provided with a second clearance cavity (312) at the end away from the first clearance cavity (311), and the middle section of the grounding member (4) is located in the second clearance cavity (312); the middle section of the grounding member (4) is provided with a shoulder (44), and the shoulder (44) abuts against the side wall of the slot (31).

8. The grounding structure of the electronic expansion valve according to claim 5, characterized in that: The housing (1) is provided with an injection ring (6), the injection ring (6) is wound with a coil, the injection ring (6) is provided with a fixing part, and the pin (5) passes through the fixing part and is electrically connected to the coil.

9. The grounding structure of the electronic expansion valve according to claim 8, characterized in that: The injection ring (6) includes a first injection molded part (61) and a second injection molded part (62). The first injection molded part (61) and the second injection molded part (62) are coaxially arranged. The first injection molded part (61) is provided with a first fixing part (611), and the second injection molded part (62) is provided with a second fixing part (621). The first fixing part (611) and the second fixing part (621) are arranged crosswise.

10. The grounding structure of the electronic expansion valve according to claim 1, characterized in that: The grounding component (4) and the housing (1) are riveted together.

Images