CN113738934A

CN113738934A - Solenoid valve coil

Info

Publication number: CN113738934A
Application number: CN202010471142.1A
Authority: CN
Inventors: 韩润虎; 周巨翔
Original assignee: Zhejiang Dunan Machinery Co Ltd
Current assignee: Zhejiang Dunan Machinery Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-12-03

Abstract

The present invention provides a solenoid valve coil, comprising: a solenoid valve coil body; the lead assembly comprises a joint and a lead, wherein the joint comprises a threading hole, the end part of the lead extends into the threading hole and can be electrically connected with the solenoid valve coil body, and the lead is sealed with the inlet of the threading hole. By applying the technical scheme of the invention, the problem of poor sealing performance of the solenoid valve coil in the prior art can be effectively solved.

Description

Solenoid valve coil

Technical Field

The invention relates to the field of electromagnetic valves, in particular to a coil of an electromagnetic valve.

Background

In the related art, the electromagnetic coil generally includes a coil and a junction box assembly electrically connected to the coil, the junction box assembly includes a housing and a junction box disposed in the housing, and the housing is provided with a wire passing hole. When connecting the lead wire to the electromagnetic coil, the lead wire is generally required to be firstly inserted into the threading hole, then connected with the corresponding port of the junction box in the shell, and finally electrically connected with the coil and the junction box assembly.

With the above structure, external water easily enters the housing through the gap between the lead wire and the threading hole, thereby causing short-circuit failure, and thus the electromagnetic coil cannot be applied outdoors (with rainfall or snowfall) or in some occasions (freezing operation or heat pump operation) where condensed water is easily generated.

Disclosure of Invention

The invention mainly aims to provide a solenoid valve coil to solve the problem of poor sealing performance of the solenoid valve coil in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a solenoid coil comprising: a solenoid valve coil body; the lead assembly comprises a joint and a lead, wherein the joint comprises a threading hole, the end part of the lead extends into the threading hole and can be electrically connected with the solenoid valve coil body, and the lead is sealed with the inlet of the threading hole.

Furthermore, the joint comprises a sealing surface in sealing fit with the solenoid valve coil body, a mounting hole communicated with the threading hole is formed in the sealing surface, and a conductive piece is arranged in the mounting hole so that the lead is electrically connected with the solenoid valve coil body.

Furthermore, the conductive piece comprises a first connector and a second connector which are mutually connected in an inserting mode, the first connector is electrically connected with the end portion of the wire, and the second connector is electrically connected with the coil in the solenoid valve coil body.

Further, the joint is moulded plastics in the circumference outside of wire, perhaps, through encapsulating between the import of wire and through wires hole.

Further, connect including terminal box and terminal box shell, be provided with the through wires hole on the terminal box shell and with the holding tank of through wires hole intercommunication, the terminal box sets up in the holding tank, the mounting hole sets up on the terminal box, the terminal surface that is provided with the holding tank of terminal box shell and the outer terminal surface of terminal box form sealed face.

Further, the junction box shell is injected outside the circumferential direction of the lead and the junction box, or the junction box is inserted in the junction box shell, and the lead and the inlet of the threading hole in the junction box shell are sealed through glue pouring.

Further, the wire includes the electric wire and encloses the wire casing of locating the circumference outside of electric wire, and the part of connecting with the wire casing of joint is transition portion, and wherein, the surface of transition portion is inwards shrunk gradually in the direction of solenoid valve coil body to lead wire subassembly, perhaps, is provided with concave-convex structure on the surface of transition portion.

Further, a sealing element is arranged between the sealing surface of the joint and the solenoid valve coil body, and the sealing element is located on the circumferential outer side of the conductive piece.

Further, the sealing element is a sealing ring, or the sealing element is a sealing sheet, and a avoiding hole for avoiding the conductive piece is formed in the sealing sheet.

Further, the sealing member includes a body portion and a waterproof rib, wherein the waterproof rib is provided on an end surface of the body portion facing the solenoid valve coil body, and/or the waterproof rib is provided on an end surface of the body portion facing the lead assembly.

Further, the solenoid valve coil body is connected with the joint through a fastener.

By applying the technical scheme of the invention, the joint is in sealing connection with the lead, so that water cannot enter the joint from a gap between the joint and the lead, the short circuit of a lead assembly is avoided, and the electromagnetic valve coil can be applied to occasions with precipitation or easy condensate water generation. On the other hand, the sealing connection between the joint and the lead wire can also isolate the electric device inside the lead wire assembly from the outside, electric sparks are not released outside the lead wire assembly, and even if the external environment has a fire condition due to combustible leakage, the electromagnetic valve coil does not cause fire or explosion, so that the explosion-proof requirement is met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic longitudinal sectional view of a first embodiment of a solenoid coil according to the invention;

FIG. 2 shows an exploded view of the solenoid valve coil of FIG. 1;

FIG. 3 is a schematic perspective view of the solenoid valve coil of FIG. 1 with wires engaged by a first connector;

fig. 4 shows a schematic perspective view of a second embodiment of a solenoid valve coil according to the present invention;

FIG. 5 shows a schematic longitudinal sectional view of the solenoid valve coil of FIG. 4;

fig. 6 shows an exploded view of a third embodiment of a solenoid valve coil according to the present invention; and

fig. 7 shows a longitudinal sectional view of the solenoid valve coil of fig. 6.

Wherein the figures include the following reference numerals:

10. a solenoid valve coil body; 11. a coil; 20. a lead assembly; 21. a joint; 211. a junction box; 2111. mounting holes; 212. a junction box housing; 2121. threading holes; 2122. accommodating grooves; 213. a sealing surface; 214. a conductive member; 2141. a first connector; 2142. a second plug connector; 215. a transition section; 22. a wire; 221. an electric wire; 222. a wire sleeve; 30. a seal member; 31. avoiding holes; 32. a body portion; 33. waterproof ribs; 40. a fastener.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 3, a solenoid valve coil according to a first embodiment includes: the solenoid valve coil comprises a solenoid valve coil body 10 and a lead assembly 20, wherein the lead assembly 20 comprises a joint 21 and a lead wire 22, the joint 21 comprises a threading hole 2121, the end part of the lead wire 22 extends into the threading hole 2121 and can be electrically connected with the solenoid valve coil body 10, and the lead wire 22 is sealed with the inlet of the threading hole 2121.

By applying the technical scheme of the first embodiment, the joint 21 is in sealing connection with the lead 22, so that external water cannot enter the joint 21 from a gap between the joint and the lead, the sealing performance of the solenoid valve coil is improved, the short circuit of the lead assembly 20 is avoided, and the solenoid valve coil can be applied to occasions with precipitation or easily generated condensed water.

As shown in fig. 1, in the first embodiment, the joint 21 includes a sealing surface 213 which is in sealing engagement with the solenoid valve coil body 10, a mounting hole 2111 which is communicated with the threading hole 2121 is provided on the sealing surface 213, and a conductive member 214 is provided in the mounting hole 2111 to electrically connect the lead wire 22 with the solenoid valve coil body 10. In the above structure, the joint 21 and the solenoid valve coil body 10 can be sealed, so that water can be prevented from entering the solenoid valve coil from the gap between the solenoid valve coil body 10 and the lead assembly 20, and electric sparks can be prevented from being released to the outside of the solenoid valve coil from the gap between the solenoid valve coil body 10 and the lead assembly 20, thereby further ensuring the safety of the solenoid valve coil.

As shown in fig. 1 to fig. 3, in the first embodiment, the conductive component 214 includes a first plug 2141 and a second plug 2142 that are plugged into each other, the first plug 2141 is electrically connected to the end of the conducting wire 22, and the second plug 2142 is electrically connected to the coil 11 in the solenoid valve coil body 10. The solenoid valve coil body 10 and the lead assembly 20 are semi-finished products, when a user assembles the solenoid valve coil, the user only needs to connect the solenoid valve coil body 10 and the lead assembly 20 in an inserting manner to complete the assembly of the solenoid valve coil, and the lead assembly 20 does not need to be installed by oneself, so that the assembly steps can be reduced, and the labor cost can be saved. The structure is simple, and the electromagnetic coil is convenient to assemble.

It should be noted that the conductive member 214 may be a plate-shaped terminal, and may also be in other shapes such as a terminal, a connector pin, a USB interface, and the like. Preferably, the first plug 2141 is a grooved plug disposed inside the lead assembly 20, and the second plug 2142 is a plug disposed to protrude from the solenoid coil body 10. Of course, in other embodiments not shown in the drawings, the first plug connector may be a plug tab protruding from the lead assembly, and the second plug connector may be a plug tab with a groove disposed inside the solenoid valve coil body.

As shown in fig. 3, the first connector 2141 has a through hole, the wire 22 is wound around the wall of the through hole of the first connector 2141, or a screw may be installed in the through hole to clamp the wire 22. The connection can also be realized by welding.

As shown in fig. 1, in the first embodiment, the contact 21 is injection-molded on the circumferential outer side of the lead wire 22. The structure enables the joint 21 and the lead 22 to be connected in a sealing mode through an injection molding mode, so that the joint 21 forms a whole, and the lead 22 and the joint 21 are completely sealed. In addition, the first connector 2141 inside the connector 21 is wrapped and cannot move, so that the connection between the first connector 2141 and the lead 22 is stable, and electric sparks cannot be generated. Of course, in other embodiments not shown in the drawings, the space between the lead wire 22 and the inlet of the threading hole 2121 may be sealed by glue.

As shown in fig. 1 and 3, in the first embodiment, the lead wire 22 includes a wire 221 and a wire sleeve 222 surrounding the wire 221, and a portion of the connector 21 connected to the wire sleeve 222 is a transition portion 215, wherein an outer surface of the transition portion 215 gradually shrinks inward in a direction from the solenoid coil body 10 to the lead assembly 20. The structure can enhance the strength of the connection part of the lead and the joint 21 and delay the break of the lead 22. Of course, in other embodiments not shown in the figures, the transition portion may also be provided with a relief structure or a thread structure.

As shown in fig. 1 to 3, in the first embodiment, a seal 30 is provided between the sealing surface 213 of the joint 21 and the solenoid valve coil body 10, and the seal 30 is located on the outer side in the circumferential direction of the conductive member 214. In the above configuration, the seal 30 can enhance the sealing property between the joint 21 and the solenoid valve coil body 10.

Specifically, as shown in fig. 2, in the first embodiment, the sealing member 30 is a sealing sheet, and the sealing sheet is provided with a avoiding hole 31 for avoiding the conductive member 214. In the above configuration, the seal piece is fitted to the shape of the seal surface 213, and the seal area between the joint 21 and the solenoid valve coil body 10 can be increased. Of course, in other embodiments not shown in the figures, the seal 30 may also be a sealing ring.

As shown in fig. 2, in the first embodiment, the solenoid valve coil body 10 and the connector 21 are connected by a fastener 40. In the above structure, the fastening member 40 can sequentially pass through the joint 21 and the sealing member 30 and be fastened on the solenoid valve coil body 10, so that the solenoid valve coil body 10 and the joint 21 are sealed more tightly. Preferably, the fasteners 40 are fastening screws, the number of which is 4.

As shown in fig. 2, in the first embodiment, the sealing member 30 includes a body portion 32 and a waterproof rib 33, wherein the waterproof rib 33 is disposed on an end surface of the body portion 32 facing the solenoid coil body 10, and is disposed on an end surface of the body portion 32 facing the lead assembly 20. Specifically, waterproof muscle 33 encloses the circumference outside of locating dodging hole 31, and above-mentioned structure makes when outside water flows to dodging hole 31, and waterproof muscle 33 can backstop outside water to further improve the leakproofness, guarantee lead wire assembly 20's life. Of course, in other embodiments not shown in the drawings, the waterproof rib 33 may be provided only on the end face of the body portion 32 facing the solenoid valve coil body 10, or only on the end face of the body portion 32 facing the lead wire assembly 20.

As shown in fig. 4 and 5, the solenoid valve coil of the second embodiment is different from the solenoid valve coil of the first embodiment in the structure of the joint 21, specifically, in the second embodiment, the joint 21 includes a terminal block 211 and a terminal block housing 212, a threading hole 2121 and a receiving groove 2122 communicating with the threading hole 2121 are provided on the terminal block housing 212, the terminal block 211 is disposed in the receiving groove 2122, a mounting hole 2111 is provided on the terminal block 211, and an end surface of the terminal block housing 212 provided with the receiving groove 2122 and an outer end surface of the terminal block 211 form a sealing surface 213. The above structure facilitates the processing of the joint 21.

Specifically, as shown in fig. 4 and 5, junction box housing 212 is injection molded to the circumferential outer sides of wire 22 and junction box 211. The above structure achieves sealing between the terminal block housing 212 and the wires 22 by injection molding the terminal block housing 212. In addition, the junction box 211 is made of a pre-processed injection molding part, and only the junction box shell 212 needs to be injection molded during processing, so that the production rate of the connector 21 can be increased.

As shown in fig. 6 and 7, the solenoid valve coil of the third embodiment is different from the solenoid valve coil of the second embodiment in the sealing manner, specifically, in the third embodiment, the junction box 211 is inserted into the junction box housing 212, and the lead 22 and the inlet of the threading hole 2121 on the junction box housing 212 are sealed by potting. In the above structure, the junction box 211 and the junction box housing 212 are both made of pre-processed injection molding parts, when processing, the wire 22 and the junction box 211 are connected, then the junction box 211 is inserted into the receiving groove 2122 to complete the assembly of the joint, and finally the threading hole 2121 between the junction box housing 212 and the wire 22 is sealed by glue filling. The above structure can further increase the production rate of the joint 21.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve coil, comprising:

a solenoid valve coil body (10);

lead subassembly (20), including joint (21) and wire (22), joint (21) are including threading hole (2121), the tip of wire (22) stretches into in threading hole (2121) and can with solenoid valve coil body (10) electricity is connected, wire (22) with the import department of threading hole (2121) is sealed.

2. The solenoid valve coil according to claim 1, wherein the joint (21) comprises a sealing surface (213) which is in sealing fit with the solenoid valve coil body (10), the sealing surface (213) is provided with a mounting hole (2111) which is communicated with the threading hole (2121), and a conductive member (214) is provided in the mounting hole (2111) to electrically connect the lead wire (22) with the solenoid valve coil body (10).

3. Solenoid valve coil according to claim 2, characterized in that said conductive element (214) comprises a first plug element (2141) and a second plug element (2142) plugged to each other, said first plug element (2141) being electrically connected to the end of said wire (22), said second plug element (2142) being electrically connected to the coil (11) inside the solenoid valve coil body (10).

4. A solenoid valve coil according to any of claims 1 to 3, wherein the joint (21) is injection molded on the circumferential outer side of the lead wire (22), or the lead wire (22) is sealed with the inlet of the threading hole (2121) by potting.

5. The solenoid valve coil according to claim 2 or 3, wherein the joint (21) comprises a junction box (211) and a junction box housing (212), the junction box housing (212) is provided with the threading hole (2121) and a receiving groove (2122) communicated with the threading hole (2121), the junction box (211) is arranged in the receiving groove (2122), the mounting hole (2111) is arranged on the junction box (211), and an end surface of the junction box housing (212) provided with the receiving groove (2122) and an outer end surface of the junction box (211) form the sealing surface (213).

6. The solenoid valve coil according to claim 5, wherein the junction box housing (212) is injection molded on the circumferential outer sides of the lead wires (22) and the junction box (211), or the junction box (211) is inserted into the junction box housing (212), and the lead wires (22) and the inlet of the threading hole (2121) on the junction box housing (212) are sealed by glue filling.

7. The solenoid valve coil according to claim 1, wherein the lead wire (22) comprises a wire (221) and a wire sleeve (222) surrounding the wire (221), and a portion of the joint (21) connected to the wire sleeve (222) is a transition portion (215), wherein an outer surface of the transition portion (215) gradually shrinks inward in a direction from the solenoid valve coil body (10) to the lead assembly (20), or a concave-convex structure is provided on an outer surface of the transition portion (215).

8. A solenoid valve coil according to claim 2, characterized in that a seal member (30) is provided between the seal surface (213) of the joint (21) and the solenoid valve coil body (10), the seal member (30) being located circumferentially outside the conductive member (214).

9. The solenoid valve coil according to claim 8, wherein the sealing member (30) is a sealing ring, or the sealing member (30) is a sealing plate provided with an avoiding hole (31) for avoiding the conductive member (214).

10. The solenoid valve coil according to claim 8, wherein the seal (30) comprises a body portion (32) and a water-proof rib (33), wherein the water-proof rib (33) is provided on an end face of the body portion (32) facing the solenoid valve coil body (10) and/or the water-proof rib (33) is provided on an end face of the body portion (32) facing the lead assembly (20).

11. Solenoid valve coil according to claim 1, characterized in that the solenoid valve coil body (10) is connected with the joint (21) by means of a fastener (40).