CN219119922U

CN219119922U - Anti-interference valve

Info

Publication number: CN219119922U
Application number: CN202223427500.2U
Authority: CN
Inventors: 吕友权; 侯晓炜; 李乾龙
Original assignee: Hilite Automobile Technology Co ltd
Current assignee: Hilite Automobile Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-02
Anticipated expiration: 2032-12-19

Abstract

The utility model relates to an anti-interference valve, which relates to the technical field of electronic expansion valves, and comprises a valve seat and a sleeve sleeved at one end of the valve seat, wherein a casing is arranged on an outer cover of the sleeve, a circuit board is arranged at one end of the sleeve, which is far away from the valve seat, a coil pole shell is sleeved at one end of the sleeve, which is close to the valve seat, and the circuit board and the coil pole shell are both fixed in the casing; a grounding terminal is connected between the circuit board and the coil pole shell, the grounding terminal comprises a plane supporting part, contact parts and a conduction supporting part, the contact parts and the conduction supporting part are respectively arranged at two ends of the plane supporting part, the contact parts are connected with the coil pole shell, and one end of the conduction supporting part far away from the plane supporting part penetrates through the circuit board; both sides of the plane supporting part are connected with limiting parts. The utility model has the advantage of reducing the external electromagnetic interference.

Description

Anti-interference valve

Technical Field

The utility model relates to the technical field of electronic expansion valves, in particular to an anti-interference valve.

Background

The electronic expansion valve is used in an air conditioner refrigerating system, and plays roles of throttling and decompressing high-pressure liquid refrigerant in the liquid accumulator and conveying the throttled and decompressed refrigerant to the evaporator.

The electronic expansion valve comprises a valve body provided with a valve port, a valve needle inserted in the valve port, a stator and a rotor which play a driving role, and when the electronic expansion valve operates, the valve needle and the valve port are matched so as to control the flow area of the refrigerant, and further control the flow and the pressure of the refrigerant.

The electronic expansion valve controls the current passing through the stator through the control signal of the controller, and the magnetic field of the permanent magnet of the rotor and the magnetic action of the excitation magnetic field generated by the stator realize the rotation of the rotor, thereby playing the role of driving the valve needle to move. Therefore, when the electronic expansion valve is operated, external electromagnetism can easily influence the transmission of control signals, and further influence the action of the valve needle.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide an anti-interference valve which has the advantage of reducing external electromagnetic interference.

The above object of the present utility model is achieved by the following technical solutions:

the anti-interference valve comprises a valve seat and a sleeve pipe electrically connected with the valve seat, wherein a casing is arranged on the outer cover of the sleeve pipe, a coil pole shell and a circuit board are arranged in the casing, and the coil pole shell is electrically connected with the sleeve pipe;

the grounding terminal is connected between the circuit board and the coil pole shell, and the grounding terminal is electrically connected with the circuit board and the coil pole shell.

The utility model is further provided with: the grounding terminal comprises a plane supporting part, contact parts and a conduction supporting part, wherein the contact parts and the conduction supporting part are respectively arranged at two ends of the plane supporting part, the contact parts are connected with the coil pole shell, and one end, far away from the plane supporting part, of the conduction supporting part penetrates through the circuit board.

The utility model is further provided with: the utility model discloses a ground terminal, including shell, fixed platform, plane supporting part, spacing part, locating part and locating part are provided with fixed platform in the shell, at least some place on fixed platform of ground terminal, plane supporting part side is connected with the spacing part, be provided with the gag lever post on the fixed platform, offer the spacing hole that supplies gag lever post male on the spacing part, the gag lever post runs through the spacing hole.

The utility model is further provided with: the shell is internally provided with a step section, the step section comprises an upper limiting surface, the upper limiting surface is higher than the fixed platform, and one end of the contact part, which is far away from the plane supporting part, is abutted to the upper limiting surface.

The utility model is further provided with: the tail end of the fixed platform is provided with a limiting groove, and the conducting supporting part is abutted with the limiting groove.

The utility model is further provided with: and the limiting rod is fixed with the limiting hole through hot riveting.

The utility model is further provided with: the contact part is provided with a protruding block, and the protruding block is abutted with the coil pole shell.

The utility model is further provided with: the coil pole shell is provided with a top block, and the top block is abutted with the grounding terminal.

In summary, the beneficial technical effects of the utility model are as follows:

1. the circuit board is connected with the valve body in a conductive way through the grounding terminal, so that the circuit board is grounded through a working medium positioned on the valve body, and interference of electromagnetic waves to the circuit board and electric components connected with the circuit board is reduced;

2. the step section and the limit groove are arranged on the shell and are in butt joint with the end part of the grounding terminal, so that the grounding terminal is stabilized, and the grounding terminal is prevented from being shifted and deformed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an anti-tamper electronic expansion valve;

FIG. 2 is a cross-sectional view of the tamper resistant electronic expansion valve;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic structural view of a ground terminal;

fig. 5 is a schematic diagram of a structure in which a coil pole housing is abutted against a ground terminal in the second embodiment; .

In the figure, 1, a valve seat; 2. a sleeve; 3. a housing; 31. a fixed platform; 311. a limit groove; 32. a limit rod; 33. a step section; 331. an upper limit surface; 4. a circuit board; 5. a coil pole housing; 51. a top block; 6. a ground terminal; 61. a planar support portion; 62. a contact portion; 621. a protruding block; 63. a conduction support part; 64. a limit part; 641. and a limiting hole.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1 and 2, the anti-interference valve disclosed by the utility model comprises a valve seat 1, wherein a through valve port is axially formed in the valve seat 1, a valve needle is inserted into the valve port, and the valve needle axially slides along the valve port. One end of the valve seat 1 far away from the valve port is sleeved with a sleeve 2 with a hollow inside, the sleeve 2 is arranged in the vertical direction, and a stator coil is arranged outside the sleeve 2. The inside rotor subassembly that is provided with of sleeve pipe 2, the biggest external diameter of rotor subassembly is less than the internal diameter of sleeve pipe 2, and rotor subassembly can rotate under the magnetic field effect that produces when stator coil circular telegram.

Referring to fig. 2 and 3, a coil pole housing 5 is fixedly connected to the outside of the sleeve 2, the coil pole housing 5 is in contact connection with the sleeve 2, and a bobbin with a stator coil is fixedly placed in the coil pole housing 5. The outer cover of the coil pole shell 5 is provided with a shell 3, the shell 3 is processed and obtained by adopting an injection molding process, the top end of the shell 3 is detachably provided with an upper cover, the interior of the shell 3 is divided into an upper accommodating cavity and a lower accommodating cavity, the coil pole shell 5 is positioned in the lower accommodating cavity, a fixed pipe penetrating through the upper accommodating cavity and the lower accommodating cavity is arranged in the shell 3 along the vertical direction, the sleeve 2 is inserted into the fixed pipe, and the outer wall of the sleeve 2 is abutted with the inner wall of the fixed pipe.

Referring to fig. 2 and 3, a circuit board 4 is placed in the upper receiving chamber, and the top end of the fixing tube is disposed through the circuit board 4. Conductive terminals are connected between the circuit board 4 and the coil pole shell 5, the conductive terminals are L-shaped, one end of each conductive terminal penetrates through the circuit board 4 and is fixedly connected with the circuit board 4, the other end of each conductive terminal is inserted into the coil pole shell 5 and is communicated with the stator coil, in the embodiment, the number of the conductive terminals is four, and the four conductive terminals are distributed at intervals along the width direction of the circuit board 4.

Referring to fig. 3 and 4, a ground terminal 6 is connected between the circuit board 4 and the coil pole case 5, the ground terminal 6 is integrally L-shaped, one end of the ground terminal 6 abuts against the outer wall of the coil pole case 5, the other end is inserted through the circuit board 4, and in this embodiment, the ground terminal 6 is located on the top end surface of the coil pole case 5. The ground terminal 6 includes a planar support portion 61 provided in the horizontal direction, contact portions 62 and conductive support portions 63 are integrally formed at both ends of the planar support portion 61, the length direction of the contact portions 62 is identical to the length direction of the planar support portion 61, a protruding block 621 is provided on the contact portions 62, the protruding block 621 is an arc-shaped solid block, and the bending direction of the protruding block 621 is set toward the coil pole housing 5, and the lower end of the protruding block 621 abuts against the upper top surface of the coil pole housing 5.

Referring to fig. 2 and 3, a fixed platform 31 is formed in the housing 3, one end of the fixed platform 31, which is close to the coil pole housing 5, is a head end, one end, which is far away from the coil pole housing 5, is a tail end, the planar supporting portion 61 is disposed on the fixed platform 31, a limiting groove 311 is formed at the tail end of the fixed platform 31, and the conductive supporting portion 63 is abutted to the limiting groove 311. Two limiting rods 32 are fixedly connected to the fixed platform 31, and the two limiting rods 32 are respectively located on two sides of the plane supporting portion 61. The two sides of the plane supporting part 61 are provided with limiting parts 64 integrally, the limiting parts 64 are perpendicular to the plane supporting part 61, the length directions of the two limiting parts 64 are consistent, each limiting part 64 is provided with a limiting hole 641, the aperture of each limiting hole 641 is larger than the outer diameter of the limiting rod 32, the limiting rod 32 penetrates through the limiting hole 641 along the vertical direction so as to stabilize the grounding terminal 6, and the limiting rod 32 is fixed with the limiting hole 641 through hot riveting.

Referring to fig. 2 and 3, a step 33 is disposed in the housing 3, the step is disposed adjacent to the coil pole housing 5, the step 33 includes an upper limit surface 331, the upper limit surface 331 is higher than the fixed platform 31, and an end of the contact portion 62 away from the planar support portion 61 abuts against the upper limit surface 331.

Referring to fig. 3 and 4, the conductive support portion 63 is disposed along a vertical direction, such that the conductive support portion 63 is perpendicular to the planar support portion 61, the top end of the conductive support portion 63 is inserted into the upper accommodating cavity through the circuit board 4, the connection portion between the conductive support portion 63 and the planar support portion 61 is rounded, and one end of the conductive support portion 63 away from the planar support portion 61 is tapered.

The implementation principle of the embodiment is as follows: the ground terminal 6 is fixed in the injection-molded housing 3 and is in contact with the coil pole housing 5 by welding, and at the same time, the ground terminal 6 is fixedly connected with the circuit board 4, so that the circuit board 4 is in conductive connection with the coil pole housing 5, while the coil pole housing 5 is in contact with the sleeve 2, the sleeve 2 is connected with the valve body, and therefore the circuit board 4 is also in conductive connection with the valve body. The circuit board 4 is electrically connected with the valve body through the grounding terminal 6, and then the circuit board 4 is grounded through the working medium positioned on the valve body, so that interference of electromagnetism to the circuit board 4 and electric components connected with the circuit board 4 is reduced.

Example two

Referring to fig. 5, an anti-interference valve according to the present utility model is based on the first embodiment, and the difference from the first embodiment is that: the top end surface of the coil pole case 5 is integrally formed with a top block 51, the top block 51 is an arc-shaped solid block, the bending direction of the top block 51 is set toward the grounding terminal 6, and the upper end of the top block 51 is in contact with the lower bottom surface of the grounding terminal 6.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. An anti-interference valve, characterized in that: the high-voltage power supply valve comprises a valve seat (1) and a sleeve (2) electrically connected with the valve seat (1), wherein a shell (3) is arranged on the outer cover of the sleeve (2), a coil pole shell (5) and a circuit board (4) are arranged in the shell (3), and the coil pole shell (5) is electrically connected with the sleeve (2);

the grounding terminal (6) is connected between the circuit board (4) and the coil pole shell (5), and the grounding terminal (6) is electrically connected with the circuit board (4) and the coil pole shell (5).

2. An anti-tamper valve according to claim 1, characterized in that: the grounding terminal (6) comprises a plane supporting portion (61), contact portions (62) and conducting supporting portions (63) which are respectively arranged at two ends of the plane supporting portion (61), the contact portions (62) are connected with the coil pole shell (5), and one ends, far away from the plane supporting portion (61), of the conducting supporting portions (63) penetrate through the circuit board (4).

3. An anti-tamper valve according to claim 2, characterized in that: be provided with fixed platform (31) in shell (3), ground terminal (6) have at least part to place on fixed platform (31), plane supporting part (61) side is connected with spacing portion (64), be provided with gag lever post (32) on fixed platform (31), offer spacing hole (641) that supply gag lever post (32) male on spacing portion (64), gag lever post (32) run through spacing hole (641).

4. A tamper resistant valve according to claim 3, wherein: the novel anti-theft device is characterized in that a step section (33) is arranged in the shell (3), the step section (33) comprises an upper limiting surface (331), the upper limiting surface (331) is higher than the fixed platform (31), and one end, far away from the plane supporting portion (61), of the contact portion (62) is abutted to the upper limiting surface (331).

5. A tamper resistant valve according to claim 3, wherein: the tail end of the fixed platform (31) is provided with a limiting groove (311), and the conducting support part (63) is abutted with the limiting groove (311).

6. A tamper resistant valve according to claim 3, wherein: the limiting rod (32) is fixed with the limiting hole (641) through hot riveting.

7. An anti-tamper valve according to claim 2, characterized in that: the contact portion (62) is provided with a protruding block (621), and the protruding block (621) is in contact with the coil pole case (5).

8. An anti-tamper valve according to claim 2, characterized in that: a top block (51) is arranged on the coil pole shell (5), and the top block (51) is abutted with the grounding terminal (6).