CN115705945A - Electronic expansion valve coil - Google Patents
Electronic expansion valve coil Download PDFInfo
- Publication number
- CN115705945A CN115705945A CN202110901610.9A CN202110901610A CN115705945A CN 115705945 A CN115705945 A CN 115705945A CN 202110901610 A CN202110901610 A CN 202110901610A CN 115705945 A CN115705945 A CN 115705945A
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- China
- Prior art keywords
- lead
- expansion valve
- electronic expansion
- sealing
- pin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 74
- 239000002184 metal Substances 0.000 claims description 14
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 6
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000002950 deficient Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses an electronic expansion valve coil, which comprises a coil body, and also comprises a lead connector detachably and fixedly connected with the coil body, and is configured as follows: and a matched sealing matching pair is formed between the pin leading-out part of the coil body and the lead connector, so that the connecting part of the pin and the lead is in a sealing state, and the functional requirements of locking, conducting and sealing are met. The lead connector is assembled as an independent structure, when a defective product is detected in the process, the lead connector can be detached from the coil body, and the detached lead and the coil part can be selectively recycled; simultaneously, this scheme has higher operation convenience, can improve electronic expansion valve's production efficiency greatly.
Description
Technical Field
The invention relates to the technical field of electronic expansion valves, in particular to an electronic expansion valve coil.
Background
In the existing electronic expansion valve coil structure, a lead is connected with a pin part to establish an effective conduction path mainly through tin soldering or terminal insertion, and the connection part is sealed by adopting potting materials such as epoxy resin and the like.
By adopting the sealing mode, the connecting part is fully coated and sealed by the sealing and filling materials such as epoxy resin and the like. Limited by the encapsulation and sealing form, related components have irreversible conversion after encapsulation, defective products in the process can only be scrapped, lead wires, coil injection-molded parts and the like in the components cannot be recycled, waste is serious, and scrapping cost is high. In addition, the curing time of the sealing and filling material is long, and the production efficiency of the electronic expansion valve is seriously influenced.
In view of this, it is urgently needed to optimally design a connection sealing structure of a pin and a lead of an existing electronic expansion valve, so that the production efficiency can be effectively improved on the basis of reducing the product scrapping cost.
Disclosure of Invention
In order to solve the technical problems, the invention provides an electronic expansion valve coil which is quick and convenient to assemble through structure optimization and avoids the influence of a sealing mode on the scrapping cost of a product.
The invention provides an electronic expansion valve coil, which comprises a coil body, and also comprises a lead connector detachably and fixedly connected with the coil body, and is configured as follows: and a matched sealing matching pair is formed between the pin leading-out part of the coil body and the lead connector, so that the connecting part of the pin and the lead is in a sealing state.
Preferably, the end of the lead connector is provided with a surrounding part formed by extending, and the surrounding part is positioned at the interface end of the lead; and the pin leading-out part of the coil body is inserted in the enclosing part, and a sealing element is arranged between the pin leading-out part and the enclosing part to form the sealing matching pair.
Preferably, a sealing member mounting groove is formed in the pin leading-out portion or the enclosing portion, and the sealing member is arranged in the sealing member mounting groove.
Preferably, the bottom of the internal accommodating cavity formed by the enclosing part of the lead connector is provided with a connecting convex part, the interface end of the lead is specifically a metal terminal embedded in the connecting convex part, and the assembled contact pin is conducted with the lead through the metal terminal.
Preferably, the pin leading-out part of the coil body is provided with an enclosing part formed in an extending way, and the enclosing part is positioned on the periphery of the pin; the end part of the lead connector is inserted into the enclosing part, and a sealing element is arranged between the end part of the lead connector and the enclosing part to form the sealing matching pair.
Preferably, a sealing element mounting groove is formed in the end portion of the lead connector or the enclosing portion, and the sealing element is arranged in the sealing element mounting groove.
Preferably, the interface end of the lead is a metal terminal embedded in the end of the lead connector, and the assembled contact pin is conducted with the lead through the metal terminal.
Preferably, the coil body and the lead connector are in detachable fixed connection by adopting a matched buckle and a clamping groove; one of the buckle and the clamping groove is arranged on the coil body, and the other is arranged on the lead connecting head.
Preferably, the body provided with the card slot has elasticity and is configured to: when the buckle is assembled, the buckle is abutted against the body of the clamping groove to generate elastic deformation, and the assembled buckle is arranged in the clamping groove after the body is reset.
Preferably, the matched buckles and the clamping grooves are symmetrically arranged in two groups.
Compared with the prior art, the invention adopts the connector detachably connected with the coil body to connect the lead and the contact pin, and the contact pin leading-out part of the coil body and the lead connector form a matched sealing matching pair, so that the connecting part of the contact pin and the lead is in a sealing state, and the functional requirements of locking, conducting and sealing are met. So set up, the lead wire connector is as independent structure, when examining the process defective products after the equipment is accomplished, can dismantle the lead wire connector from the coil body, dismantles the lead wire and the selective recycle of coil part after accomplishing, has improved the cost of scrapping when the process defective products appear greatly. Simultaneously, compare in current resin curing process, this scheme has higher operation convenience, can improve electronic expansion valve's production efficiency greatly, and then can effectively reduce product manufacturing cost.
In a preferred embodiment of the present invention, the pin leading-out portion and the lead connector extend to form an enclosure portion, and the other one is placed in the enclosure portion to form a sealing fit pair through a sealing member. Thus, the sealing path is lengthened in a space of a certain assembly size, and the sealing member can be arranged as required, thereby maximally improving the sealing and waterproofing performance.
In another preferred embodiment of the present invention, a metal terminal is disposed at an end of the lead connector for electrically connecting with the lead to form an interface end of the lead, and the assembled contact pin is conducted with the lead through the metal terminal, so that the connection stability can be effectively improved, and a reliable connection relationship in a working state can be ensured.
In another preferred scheme of the invention, the clamping groove body matched with the buckle has elasticity, the buckle presses against the clamping groove body to generate elastic deformation during assembly, and the assembled buckle is arranged in the clamping groove after the body is reset; this further improves the convenience of operation.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a coil of the electronic expansion valve according to one embodiment;
FIG. 2 is an exploded view of the assembly of the coil of the electronic expansion valve according to one embodiment;
FIG. 3 isbase:Sub>A partial sectional view A-A of FIG. 1;
FIG. 4 is a schematic view of the entire structure of the coil of the electronic expansion valve according to the second embodiment;
FIG. 5 is an exploded view of the assembly of the coil of the electronic expansion valve according to the second embodiment;
FIG. 6 is a partial sectional view B-B of FIG. 4;
fig. 7 is a schematic diagram of the overall structure of a seal according to an embodiment.
In fig. 1-7:
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows:
referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of an overall structure of an electronic expansion valve coil according to the present embodiment; fig. 2 is an exploded view of the assembly of the coil of the electronic expansion valve according to the present embodiment.
The electronic expansion valve coil mainly comprises a coil body 1 and a lead connector 2 which are of two independent structures and can be detachably and fixedly connected. Wherein, a matched sealing matching pair is formed between the pin leading-out part 11 of the coil body 1 and the lead connector 2, so that the connection part of the pin 12 and the lead 21 is in a sealing state. Here, "detachably and fixedly connected" means that the relative positional relationship between the two is fixed and detachable after assembly. That is, the fixed relationship between the coil body 1 and the lead connector 2 is reversible.
The end of the lead connector 2 is provided with an extended enclosure part 22, and the enclosure part 22 is positioned at the interface end of the lead 21 and is used for realizing detachable fixed connection with the coil body 1; the pin leading-out part 11 of the coil body 1 is inserted into the enclosing part 22, and a sealing element 3 is arranged between the pin leading-out part and the enclosing part to form the sealing matching pair. As shown in fig. 2, the cross-sectional shape and size of the enclosing portion 22 are matched with the pin leading-out portion 11, and the upper and lower edges thereof are concave arc-shaped, so that the enclosing portion can be well attached to the outer peripheral surface of the coil body 1 after being assembled. When the defective products are detected in the process after the assembly is finished, the lead connector 2 can be detached from the coil body 1, and the detached lead part and the coil part can be selectively recycled; meanwhile, the operation convenience is higher, and the production efficiency of the electronic expansion valve can be greatly improved.
In order to obtain better sealing performance, a sealing piece mounting groove 13 can be arranged on the pin leading-out part 11, and the sealing piece 3 is arranged in the sealing piece mounting groove 13; during assembly, the corresponding sealing element 3 is placed in the sealing installation groove 13 in advance, and then inserted into the enclosing part 22 of the lead connector 2. On one hand, the position of the sealing element 3 is preliminarily fixed, so that unnecessary displacement in the insertion process can be avoided; meanwhile, the foundation is prepositioned to ensure the convenience of subsequent operation, thereby improving the production efficiency. In addition, in a certain assembly size space, the sealing path is lengthened, and the sealing and waterproof performance can be improved to the maximum extent.
Of course, the installation groove 13 may be disposed on the inner wall surface (not shown) of the enclosing portion 22, so as to achieve the effect of primarily fixing the position of the sealing member, and the installation groove is disposed on the outer surface of the pin leading portion 11 more effectively.
In addition, as shown in fig. 2 and 3, the sealing fit pair between the pin leading portion 11 and the enclosing portion 22 is formed on the step fit surface, and the two sealing members 3 are respectively disposed on the large diameter section near the pin leading portion 11 and the small diameter section near the enclosing portion 22, so as to have a good positioning and sealing effect.
As further shown in fig. 3, which isbase:Sub>A partial sectional viewbase:Sub>A-base:Sub>A of fig. 1.
The bottom of the inner accommodating cavity 23 formed by the enclosing part 22 of the lead connector 2 is provided with a connecting convex part 24, the interface end of the lead 21 is specifically a metal terminal (not shown in the figure) embedded in the connecting convex part 24, and the assembled contact pin 12 is conducted with the lead 21 through the metal terminal, so that the reliable stability of the connection relation in the working state can be effectively improved.
In addition, the coil body 1 and the lead connector 2 are preferably in detachable fixed connection by adopting a matched buckle and a clamping groove; as shown in the drawings, the two buckles 14 are disposed on two side surfaces of the pin leading-out portion 11, and correspondingly, the two clamping grooves 25 are disposed on two side surfaces of the enclosing portion 22, so that the detachable fixed connection mode constructed by the two buckles has the characteristics of time and labor saving in operation. Here, the buckle and the clamping groove may also be arranged in opposite directions, that is, the clamping groove is arranged on the coil body 1, and the buckle is arranged on the lead connector 2, so that the buckle and the lead connector can be detachably and fixedly connected (not shown in the figure).
Preferably, the body 26 provided with the card slot 25 has elasticity and is configured to: the buckle 14 during assembly presses against the body 26 of the clamping groove 25 to generate elastic deformation, and the buckle 14 after being assembled in place is arranged in the clamping groove 25 after the body 26 is reset. In this scheme, close portion 22 and go up and set up the body 26 that forms independent deformation through two slits, especially, the buckle 14 fitting surface of adaptation is the inclined plane, can guide the gradual change at the in-process that presses body 26, and the equipment operation is more smooth and easy.
The two sets of the adaptive snap 14 and the snap groove 25 are shown as being symmetrically arranged, and it is understood that only one or other plural sets may be provided according to the selection and bearing capacity of different snap forms. This scheme adopts bilateral symmetry to set up two, can effectively utilize the side space of contact pin extraction portion, accords with the trend requirement that the product integrates, miniaturized.
It should be noted that, the sealing mating pair of the coil body 1 and the lead connector 2 that are detachably and fixedly connected may be formed by inserting the pin leading-out portion 11 of the coil body 1 into the enclosing portion 22 of the lead connector 2, or may be formed by reversely inserting and assisting with a sealing member, as shown in the following embodiments.
Example two:
referring to fig. 4 and 5, fig. 4 is a schematic view of an overall structure of the electronic expansion valve coil according to the present embodiment, and fig. 5 is an exploded view of the electronic expansion valve coil according to the present embodiment.
The electronic expansion valve coil has the same core design concept as the electronic expansion valve coil in the first embodiment, and the electronic expansion valve coil adopts two independent structures, namely a coil body 1 and a lead connector 2, which are detachably and fixedly connected. For the sake of clarity of illustrating the differences and connections between the two solutions, the same functional components are indicated in the figures with the same reference numerals.
As shown in the figure, the pin leading-out part of the coil body 1 has an enclosing part 11 'formed by extension, and the enclosing part 11' is positioned at the periphery of the pin 12; the end 22 ' of the lead connector 2 is inserted into the enclosing part 11 ', and a sealing element 3 is arranged between the end 22 ' and the enclosing part to form the sealing matching pair.
Specifically, a sealing member installation groove 221 ' is provided on the end 22 ' of the lead connector 2, and the sealing member 3 is disposed in the sealing member installation groove 221 '. Here, the buckle and the clamping groove may also be arranged in opposite directions, that is, the clamping groove is arranged on the coil body 1, the buckle is arranged on the lead connector 2, and the detachable fixed connection (not shown in the figure) between the buckle and the lead connector can also be realized.
In this embodiment, the interface end of the lead 21 is a metal terminal (not shown) embedded in the end 22' of the lead connector 2, and the assembled pin 12 is electrically connected to the lead 21 through the metal terminal.
The two sets of matching buckles 14 'and clamping grooves 25' are symmetrically arranged on the upper surface and the lower surface. Specifically, two catches 14 ' are formed on the upper and lower surfaces of the enclosing portion 11 ', and the bodies 26 ' of the two catching grooves 25 ' are bent and extended from the end portion 22 ' and are elastically deformable.
Further, referring to FIG. 6, a partial sectional view B-B of FIG. 4 is shown. This scheme adopts a sealing member to establish sealedly, and in fact, the quantity of sealing member 3 can set up according to sealing performance's needs. In the case of two or other plural sealing members, it is also possible to adopt the form shown in fig. 7, which shows a structure adapted to two mounting grooves, and two sealing bodies 3' are connected by a connecting body to form an integral structure, and both side edges are extended outwardly. Compared with the form of two independent sealing pieces, the sealing effect is further effectively improved.
It should be noted that the above-mentioned examples provided by the present embodiment are not limited to the structural form of the coil body shown in the drawings, and it should be understood that the core concept is within the scope of the present application as long as the core concept is consistent with the present solution.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and embellishments can be made without departing from the principle of the present invention, and these modifications and embellishments should also be regarded as the protection scope of the present invention.
Claims (10)
1. Electronic expansion valve coil, including the coil body, its characterized in that still include with the fixed connection's can be dismantled to the coil body lead wire connector to the configuration is: and a matched sealing matching pair is formed between the pin leading-out part of the coil body and the lead connector, so that the connecting part of the pin and the lead is in a sealing state.
2. The electronic expansion valve coil as claimed in claim 1, wherein the end of the lead connector has a surrounding portion formed by extending, the surrounding portion being located at the interface end of the lead; and the pin leading-out part of the coil body is inserted in the enclosing part, and a sealing element is arranged between the pin leading-out part and the enclosing part to form the sealing matching pair.
3. The electronic expansion valve coil as claimed in claim 2, wherein a sealing member mounting groove is provided on the pin-leading part or the enclosing part, and the sealing member is disposed in the sealing member mounting groove.
4. The electronic expansion valve coil as claimed in claim 3, wherein the bottom of the internal receiving cavity formed by the enclosing portion of the lead connector has a connecting protrusion, the interface end of the lead is a metal terminal embedded in the connecting protrusion, and the assembled pin is conducted with the lead through the metal terminal.
5. The electronic expansion valve coil as claimed in claim 1, wherein the pin leading-out portion of the coil body has an enclosure portion formed by extension, the enclosure portion being located at an outer periphery of the pin; the end part of the lead connector is inserted into the enclosing part, and a sealing element is arranged between the end part of the lead connector and the enclosing part to form the sealing matching pair.
6. The electronic expansion valve coil according to claim 5, wherein a sealing member mounting groove is provided on an end portion of the lead connector or the enclosure portion, and the sealing member is disposed in the sealing member mounting groove.
7. The electronic expansion valve coil according to claim 6, wherein the interface end of the lead is a metal terminal embedded in the end of the lead connector, and the assembled contact pin is electrically connected to the lead through the metal terminal.
8. The electronic expansion valve coil according to claim 1, wherein the coil body and the lead connector are detachably and fixedly connected by adopting a matched buckle and a clamping groove; one of the buckle and the clamping groove is arranged on the coil body, and the other is arranged on the lead connecting head.
9. The electronic expansion valve coil according to claim 8, wherein the body provided with the catching groove has elasticity and is configured to: during assembly, the buckle abuts against the body of the clamping groove to generate elastic deformation, and the assembled buckle is arranged in the clamping groove after the body is reset.
10. An electronic expansion valve coil according to claim 8 or 9, wherein the two sets of the snap and the snap groove are symmetrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901610.9A CN115705945A (en) | 2021-08-06 | 2021-08-06 | Electronic expansion valve coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901610.9A CN115705945A (en) | 2021-08-06 | 2021-08-06 | Electronic expansion valve coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115705945A true CN115705945A (en) | 2023-02-17 |
Family
ID=85179772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110901610.9A Pending CN115705945A (en) | 2021-08-06 | 2021-08-06 | Electronic expansion valve coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115705945A (en) |
-
2021
- 2021-08-06 CN CN202110901610.9A patent/CN115705945A/en active Pending
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