CN107345590A - A kind of electric expansion valve and its coil assembly, the assembly method of coil assembly - Google Patents
A kind of electric expansion valve and its coil assembly, the assembly method of coil assembly Download PDFInfo
- Publication number
- CN107345590A CN107345590A CN201610301459.4A CN201610301459A CN107345590A CN 107345590 A CN107345590 A CN 107345590A CN 201610301459 A CN201610301459 A CN 201610301459A CN 107345590 A CN107345590 A CN 107345590A
- Authority
- CN
- China
- Prior art keywords
- wiring board
- coil
- coil assembly
- moulding
- contact pin
- Prior art date
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
Abstract
The invention discloses a kind of coil assembly of electric expansion valve, includes encapsulating coil block, the wiring board moulding for installing wiring board of stator winding；The coil block, the wiring board moulding quadric injection mould turn into coil injection molding part in one.Using this structure, the coil injection molding part of quadric injection mould ensure that the sealing between wiring board moulding and coil block, in the assembling process of coil assembly, wiring board moulding and coil block need not be welded, also the possibility of the commissure infiltration of the two is avoided, ensures the job stability of electric expansion valve.In addition, invention additionally discloses a kind of electric expansion valve of the application coil assembly, and the assembly method of the coil assembly, there is same effect.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more particularly to a kind of electric expansion valve and its line
Enclose assembly, the assembly method of coil assembly.
Background technology
Electric expansion valve is arranged between reservoir and evaporator, is the high pressure of air-conditioning refrigeration system
With the separation of low pressure.The function of electric expansion valve is：The high-pressure liquid system from liquid reservoir
The amount of liquid refrigerant that cryogen expenditure and pressure, regulation and control enter in evaporator, is allowed to adapt to
The change of cooling load.The type of drive of electric expansion valve is controller by being gathered to sensor
Obtained parameter is calculated, and regulating command is sent to wiring board, from wiring board to electronic expansion
Valve exports electric signal, is then rotated by coil drive electric expansion valve rotor part, realizes valve
Pin moves up and down, and the valve port orifice size of electric expansion valve is adjusted, so as to control refrigerating capacity.
Fig. 1 is refer to, Fig. 1 is the coil assembly figure of electric expansion valve in the prior art.
In the prior art, as shown in figure 1, the coil assembly 1 ' mainly include coil block 12 ',
Wiring board moulding 11 ' and cover plate 15 ', wiring board moulding 11 ' are located at the side of coil block 12 '
Side, the plug connector 112 ' being connected with wiring board moulding 11 ' are set down.
The assembling process of the coil assembly 1 ' is as follows：
S11′：Coil block 12 ' passes through ultrasonic bonding with wiring board moulding 11 '；
S12′：Coil block 12 ' and the ultrasonic bonding of pressing plate 122 '；
S13′：Wiring board 111 ' is positioned over the interior correspondence position of wiring board moulding 11 ', and with
The contact pin ultrasonic bonding of extraction；
S14′：To the space encapsulating of wiring board moulding 11 ', ensure its sealing；
S15′：By cover plate 15 ' and the ultrasonic bonding of wiring board moulding 11 '.
Using above-mentioned coil assembly 1 ', mainly ensure that wiring board is molded by welding twice during assembling
The welding of the sealing in the space of part 11 ', i.e. coil block 12 ' and wiring board moulding 11 ', circuit
The welding of plate moulding 11 ' and cover plate 15 ', causes the manufacturing procedure of coil assembly 1 ' relatively complicated,
And there is also the risk of infiltration for the commissure of coil block 12 ' and wiring board moulding 11 '.
In addition, wiring board moulding 11 ' is located at the side of coil block, cause the whole of coil assembly
Body size is larger, and space layout is not compact.
In view of this, it would be highly desirable to for above-mentioned technical problem, coil assembly of the prior art is entered
Row optimization design, to reduce the infiltration risk that welded bands are come, and rational deployment, it is total to reduce coil
Into appearance and size.
The content of the invention
The purpose of the present invention is provides a kind of coil assembly, to reduce the infiltration risk that welded bands are come,
And rational deployment, reduce the appearance and size of coil assembly.On this basis, the present invention also provides
A kind of assembly method of coil assembly, to reduce the manufacturing procedure of coil assembly.In addition, this hair
It is bright that a kind of electric expansion valve using above-mentioned coil assembly is also provided, there is same effect.
In order to solve the above technical problems, the present invention provides a kind of coil assembly of electric expansion valve,
Coil block, the wiring board moulding for installing wiring board including encapsulating stator winding；Institute
Coil block, the wiring board moulding quadric injection mould are stated in one, turns into coil injection molding part.
Using this structure, the coil injection molding part of quadric injection mould ensure that wiring board moulding and line
Sealing between coil assembly, in the assembling process of coil assembly, without welding wiring board note
Plastic and coil block, the possibility of the commissure infiltration of the two is also avoided, ensures electronics
The job stability of expansion valve.
Preferably, the bottom wall of the wiring board moulding is provided with protruding upward, swollen with the electronics
The cavity that the body top of swollen valve is adapted, and the middle through hole of the cavity and the coil block
It is correspondingly arranged, the wiring board moulding quadric injection mould is in the top of the coil block.
Preferably, the bottom wall of the wiring board moulding is additionally provided with least on the outside of the cavity
One downwardly projecting projection, the roof of the coil block are recessed provided with being adapted to the projection
Groove.
Preferably, the bottom wall of the wiring board moulding is additionally provided with downwards on the outside of the projection
Protrusion, the protruding ring with being adapted at the top of the coil block, the raised latch closure are located at institute
State the outside of coil block.
Preferably, the wiring board moulding is provided with contact pin plug socket, inserted sheet plug socket；It is described
The bottom wall of wiring board moulding is provided with sprue gate, the cast in the side where contact pin plug socket
The inner side of mouth is provided with downwardly projecting and outer openings box like structure.
Preferably, the wiring board moulding bottom wall is additionally provided with annular waterproof rib, the waterproof rib
Surround the box like structure and the contact pin plug socket.
Preferably, the side of the wiring board moulding is provided with plug connector；
The contact pin plug socket, the inserted sheet plug socket are on the plug connector；
Or one of the contact pin plug socket, both described inserted sheet plug sockets are inserted located at described
On fitting, another one be located at the plug connector opposite side.
Preferably, including one section of contact pin and two sections of contact pins；
One section of contact pin is fixedly arranged on the coil block, is horizontally disposed with；
Two sections of contact pins are vertically arranged, and top is plugged in the contact pin plug socket, and bottom is provided with
Perforate, be sheathed on the outer end of one section of contact pin, or bottom be provided with breach, be held on it is described
The outer end of one section of contact pin.
Preferably, multiple two sections of contact pins injections are into a single integrated structure.
In addition, the present invention also provides a kind of assembly method of the coil assembly of electric expansion valve, wrap
Include following steps：
Pressing plate is welded in the bottom of the coil injection molding part；
Wiring board is installed on to the correspondence position of the wiring board moulding, and by the wiring board
Welded with inserted sheet, contact pin；
The space of printed circuit board moulding；
Cover plate is welded in the wiring board moulding top.
Preferably, the space specific means of printed circuit board moulding is：
The encapsulating in the space, or assist side surface spray underwater paint.
In addition, the present invention also provides a kind of electric expansion valve, including coil assembly, with the line
Enclose the valve body of assembly connection；The coil assembly uses coil assembly as described above.
Because above-mentioned coil assembly has as above technique effect, therefore, corresponding assembling side
Method, it should also be as with identical technique effect using the electric expansion valve of the coil assembly, herein
Repeat no more.
Brief description of the drawings
Fig. 1 is the structural representation of electric expansion valve in the prior art；
Fig. 2 is a kind of embodiment of the coil assembly of electric expansion valve provided by the present invention
Schematic diagram；
Fig. 3 is the structural representation of Fig. 2 cover plates；
Fig. 4 is the structural representation of wiring board in Fig. 2；
Fig. 5 is the structural representation of Fig. 2 coil mouldings；
Fig. 6 is the front view of Fig. 5 wiring board moulding；
Fig. 7 is Fig. 6 top view；
Fig. 8 is Fig. 6 upward view；
Fig. 9 is Fig. 6 another angular views；
Figure 10 is the structural representation of Fig. 2 center line coil assemblies；
Figure 11 is the structural representation of winding in Figure 10；
Figure 12 is a kind of structural representation of embodiment of contact pin in Figure 11；
Figure 13 is the structural representation of another embodiment of contact pin in Figure 11；
Figure 14 is the structural representation of Fig. 2 center platens；
Figure 15 is that the structure of another embodiment of coil assembly provided by the present invention is shown
It is intended to；
Figure 16 is the general shape figure of coil assembly shown in Figure 15；
Figure 17 is that a kind of structure of embodiment of electric expansion valve provided by the present invention is shown
It is intended to；
Figure 18 is a kind of embodiment of the assembly method of coil assembly provided by the present invention
Block diagram.
Wherein, in Fig. 1：
Coil assembly 1 '；
Wiring board moulding 11 '；
Wiring board 111 '；Plug connector 112 '；
Coil block 12 '；Pressing plate 122 '；
Cover plate 15 '；
Valve body 2 '；
Fig. 2 is into Figure 17：
Coil assembly 1；
Wiring board moulding 11；Wiring board 111；Plug connector 112；Contact pin plug socket 112a；
Inserted sheet plug socket 112b；Cavity 113；Projection 114；Protruding ring 115；Sprue gate 116；Box
Shape structure 117；Waterproof rib 118；
Coil block 12；Middle through hole 121；Pressing plate 122；
Inserted sheet 13；Contact pin 14；One section of contact pin 14a；Two sections of contact pin 14b；Perforation 141；Lack
Mouth 142；
Cover plate 15；
Valve body 2.
Embodiment
The core of the present invention is provides a kind of coil assembly, by coil block and wiring board moulding
Quadric injection mould reduces the infiltration risk that welded bands are come, and rational deployment, reduced in one
The appearance and size of coil assembly.On this basis, the present invention also provides a kind of using above-mentioned coil
The electric expansion valve of assembly, there is same effect.In addition, also to provide a kind of coil total by the present invention
Into assembly method, to reduce the manufacturing procedure of coil assembly.
In order that those skilled in the art more fully understands technical scheme, tie below
Closing the drawings and specific embodiments, the present invention is described in further detail.
It should be noted that the herein presented noun of locality " top ", " bottom " refer respectively to respectively
Accompanying drawing it is upper and lower, " interior " refer in Fig. 2 by the left and right sides point to middle part direction, " outer "
Refer to the direction of the sensing left and right sides in middle part in Fig. 2.These nouns of locality are attached with specification
Established on the basis of figure, their appearance should not influence protection scope of the present invention.
Fig. 2-Figure 10 is refer to, Fig. 2 is the coil assembly of electric expansion valve provided by the present invention
A kind of schematic diagram of embodiment；Fig. 3 is the structural representation of Fig. 2 cover plates；Fig. 4
For the structural representation of wiring board in Fig. 2；Fig. 5 is the structural representation of Fig. 2 coil mouldings
Figure；Fig. 6 is the front view of Fig. 5 wiring board moulding；Fig. 7 is Fig. 6 top view；Figure
8 be Fig. 6 upward view；Fig. 9 is Fig. 6 another angular views；Figure 10 is Fig. 2 coils
The structural representation of component.
As shown in Fig. 2 the present invention provides a kind of coil assembly of electric expansion valve, the coil is total
Into including coil block 12, wiring board moulding 11, and pressing plate 122, wiring board 111,
Cover plate 15, inserted sheet 13, contact pin 14 etc. are installed on coil block 12 or wiring board moulding 11
Other parts.
Coil block 12 is that winding is encapsulated in into its internal moulding, and pressing plate 122 is located at line
The bottom of coil assembly 12, for connecting valve body 2, wiring board 111, inserted sheet 13 are installed on circuit
Plate moulding 11, and the other end of inserted sheet 13 is connected with controller, the one end of contact pin 14 and coil
Component 12 connects, the other end and wiring board moulding 11 connect, for realizing that wiring board is molded
The circuit connection of part 11, coil block 12.In the course of work, controller is passed by inserted sheet 13
Defeated control signal is to wiring board 111, then is transmitted and controlled to winding by contact pin 14 from wiring board 111
Electric current processed, electromagnetism pole plate is set to produce magnetic field with this, control rotor rotates, so as to control electronics swollen
The aperture of swollen valve.
Unlike the prior art, above-mentioned coil block 12, the wiring board moulding 11
Quadric injection mould turns into coil injection molding part in one.
Using this structure, the coil injection molding part of quadric injection mould ensure that wiring board moulding 11
With the sealing between coil block 12, in the assembling process of coil assembly, without sealing wire
Road plate moulding 11 and coil block 12, also avoid the possibility of the commissure infiltration of the two
Property, ensure the job stability of electric expansion valve.
In specific scheme, with reference to shown in Fig. 5, the bottom wall of above-mentioned wiring board moulding 11 is provided with
Cavity 113 that is protruding upward, being adapted with the top of valve body 2 of the electric expansion valve, and institute
The middle through hole 121 for stating cavity 113 and the coil block 12 is correspondingly arranged, the wiring board note
The quadric injection mould of plastic 11 is in the top of the coil block 12.
The program by the prior art laterally and Column Layout wiring board moulding 11, coil block
12 change into vertical layout so that wiring board moulding 11 is closely set in the top of valve body 2
Outside, the space of the apical lateral of valve body 2 is taken full advantage of, so, whole coil assembly takes
Space greatly reduce, and then make that the profile of electric expansion valve is smaller, and space layout is reasonable, from
And save the cost of bulk transport.
Above-mentioned wiring board moulding 11 and the junction of coil block 12 can also be further set
Concrete structure.
In a kind of concrete scheme, as shown in Fig. 5, Fig. 8 and Fig. 9, wiring board moulding 11
Bottom wall is additionally provided with least one downwardly projecting projection 114, institute in the outside of the cavity 113
The roof for stating coil block 12 is provided with the groove being adapted to the projection 114.
The fit structure of projection 114 and groove makes the two bond strength big, avoids in injection moulding process
Phenomena such as generation transversion malposition.The quantity of above-mentioned projection 114 can be one, or more
It is individual, consider for symmetry and sealing, can be uniformly multiple with the bottom wall of wiring board moulding 11
Projection 114.
In addition, as shown in Fig. 5, Fig. 8 and Fig. 9, the bottom wall of above-mentioned wiring board moulding 11 exists
The outside of the projection 114 be additionally provided with it is downwardly projecting, mutually fitted with the top of the coil block 12
The protruding ring 115 matched somebody with somebody, the button of protruding ring 115 is located at the outside of the coil block 12.
So, during quadric injection mould, button can play located at the protruding ring 115 of coil outer
The effect of holding, avoid occurring during quadric injection mould the phenomenon of flash, be also further ensured that wiring board
The positional stability of moulding 11, coil block 12.
In further scheme, as shown in Fig. 5, Fig. 8 and Fig. 9, the wiring board moulding
11 are provided with contact pin plug socket 112a, inserted sheet plug socket 112b；The wiring board moulding 11
Bottom wall is provided with sprue gate 116, the sprue gate 116 in the side where contact pin plug socket 112a
Inner side be provided with downwardly projecting and outer openings box like structure 117.
During quadric injection mould, melting charge is poured into a mould into sprue gate 116, melting charge, which falls, enters die cavity,
And entered by the opening of box like structure 117 inside box like structure 117, until die cavity, box-like
Structure 117 is filled, and melting charge cooling, coil injection molding part, coil block 12 is combined into
One, turns into coil injection molding part.
Because the seal request of contact pin 14 is higher, therefore needed during quadric injection mould in contact pin grafting
More melting charge is poured into a mould in position where seat 112a, to form the injection of larger thickness, avoids
Crack is produced herein.But the larger place of thickness holds if cast is uneven in injection moulding process
Shrinkage cavity is also easy to produce, weakens the stability of injection.After above-mentioned box-like structure is set, box-like structure
Side wall can form Z-type and hold structure, lift the bond strength of quadric injection mould, and avoid noting at this
Modeling thickness is excessive and pours into a mould uneven caused shrinkage cavity, so as to ensure that the work of coil injection molding part
Make stability.
In further scheme, as shown in Fig. 5, Fig. 8 and Fig. 9, wiring board moulding 11
Bottom wall is also provided with downwardly projecting annular waterproof rib 118, and the waterproof rib 118 surrounds institute
State box like structure 117 and contact pin plug socket 112a.
During quadric injection mould, waterproof rib 118, can be rapid by the heat transfer of high temperature melting melting material
Melt, be incorporated between wiring board moulding 11, coil block 12, lift coil moulding
Sealing, avoid poorly sealed between wiring board moulding 11, coil block 12 and have water
Contact pin 14 is flow to, so as to ensure that the job stability of electric expansion valve.
In order to ensure that waterproof rib 118 can contact fast melt after high temperature melting melting material, the waterproof rib
118 longitudinal section can be del, and thickness is smaller.It is of course also possible to it is other shapes
Shape.
The concrete structure of the plug socket of above-mentioned coil injection molding part can also be further set.
In a kind of concrete scheme, as shown in figure 5, the side of above-mentioned wiring board moulding 11 is provided with
Plug connector 112；The contact pin plug socket 112a, the inserted sheet plug socket 112b are located at described
On plug connector 112.
Plug connector is located at using this contact pin plug socket 112a, the inserted sheet plug socket 112b
112 structure so that the structure of wiring board moulding 11 is relatively simple, manufacturing procedure is less,
Production cost is relatively low.
Certainly, above-mentioned contact pin plug socket 112a, inserted sheet plug socket 112b can be split type knot
Structure, can also will be both as whole installation.
It is contemplated that above-mentioned contact pin plug socket 112a, inserted sheet plug socket 112b and not only limit are
It is as shown in Figure 15 and Figure 16, described in another scheme located at the side of coil injection molding part
One of contact pin plug socket 112a, both described inserted sheet plug socket 112b are located at the grafting
On part 112, another one be located at the plug connector 112 opposite side.So, by inserted sheet 13,
Contact pin 14 is respectively arranged on the both sides of coil injection molding part, equally can simply, easily realize that coil is total
Into work.
The specific constructive form of above-mentioned contact pin 14 can also be further set.
, can be by contact pin 14 with reference to shown in Fig. 6, Figure 11 and Figure 12 in a kind of concrete scheme
It is arranged to include one section of contact pin 14a and two sections of contact pin 14b, one section of contact pin 14a is fixedly arranged on
The coil block 12, it is horizontally disposed with；Two sections of contact pin 14b are vertically arranged, top grafting
In the contact pin plug socket 112a, bottom is provided with perforation 141, is sheathed on one section of contact pin 14a
Outer end.
Before quadric injection mould, two sections of contact pin 14b band nose end is first set in one end contact pin 14
Outer end, and two sections of contact pin 14b top is plugged in contact pin plug socket 112a jack,
I.e. installation carries out quadric injection mould and then printed circuit board moulding in the state shown in Fig. 6
11 space, the circuit connection of wiring board moulding 11, coil block 12 can be realized.
In another concrete scheme, as shown in figure 13, again by one section of contact pin 14a of level
It is connected with two sections of vertical contact pin 14b, except that, two sections of contact pin 14b bottom is provided with
Breach 142, the outer end for being held on one section of contact pin 14a.So so that two sections of contact pin 14b
More easily it can be connected with one section of contact pin 14a, assembling is simpler.
In another concrete scheme, above-mentioned multiple two sections of contact pin 14b injections are into a single integrated structure.
Before assembling, multiple two sections of contact pin 14b are molded in one by precalculated position, into
For two sections of contact pin 14b mouldings, then by the both ends of two sections of contact pins 14b mouldings respectively with
Multiple one section of contact pin 14a, the wiring board 111 connect.So, by precalculated position be molded in
Multiple two sections of contact pin 14b of one are once integrated, and are so easy to and corresponding multiple one
Section contact pin 14a assemblings, compared with prior art, without assembling two sections of contact pin 14b one by one
With one section of contact pin 14a, multiple two sections of contact pin 14b and multiple one section of contact pin 14a can be increased substantially
Assembling speed, ensure efficiency of assembling it is higher.
In another embodiment, the present invention also provides the coil of above-mentioned electric expansion valve
The assembly method of assembly, comprises the following steps：
S11：Pressing plate is connected to the bottom of the coil injection molding part；
Specifically, as shown in figure 14, pressing plate can be connected by several threaded connectors
In the bottom of coil injection molding part.Certainly, the two and not only limit threaded connection, can also directly by
Pressing plate is welded in the bottom of coil injection molding part.
S12：Wiring board is installed on to the correspondence position of the wiring board moulding, and by described in
Wiring board welds with inserted sheet, contact pin；
By the step, the circuit connection of wiring board moulding, coil block is realized, and is ensured
Inserted sheet can be by contact pin to winding transmission of control signals.
S13：The space of printed circuit board moulding；
In specific scheme, can in the space encapsulating, or the surface spray waterproof of assist side
The mode of paint realizes sealing.So, avoid on wiring board mounted inserted sheet, contact pin etc. due to
Seal bad and produce loosening, ensure that the stability of circuit connection.
S14：Cover plate is welded in the wiring board moulding top.
It can be seen from above-mentioned installation step compared with prior art, welding wiring board is eliminated
The step of moulding, coil block, the possibility of the commissure infiltration of the two is avoided, is ensured
The job stability of electric expansion valve.In addition, it also simplifies the assembly process of coil assembly.
In addition, the present invention also provides a kind of electric expansion valve, including coil assembly, with the line
Enclose the valve body of assembly connection；, the coil assembly uses coil assembly as described above.
Because above-mentioned coil assembly has as above technique effect, therefore, using the coil assembly
Electric expansion valve should also be as, with identical technique effect, will not be repeated here.
Above to a kind of electric expansion valve provided by the present invention and its coil assembly, coil assembly
Assembly method be described in detail.Principle of the specific case used herein to the present invention
And embodiment is set forth, the explanation of above example is only intended to help and understands the present invention
Method and its core concept.It should be pointed out that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, can also to the present invention carry out it is some improvement and
Modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (12)
1. a kind of coil assembly of electric expansion valve, include the coil block of encapsulating stator winding
(12), for installing the wiring board moulding (11) of wiring board (111)；Characterized in that,
The coil block (12), wiring board moulding (11) quadric injection mould turn into one
Coil injection molding part.
2. coil assembly according to claim 1, it is characterised in that the wiring board
The bottom wall of moulding (11) is provided with valve body (2) top protruding upward, with the electric expansion valve
The cavity (113) that portion is adapted, and the cavity (113) and the coil block (12)
Middle through hole (121) is correspondingly arranged, and wiring board moulding (11) quadric injection mould is in the line
The top of coil assembly (12).
3. coil assembly according to claim 2, it is characterised in that the wiring board
The bottom wall of moulding (11) is additionally provided with least one convex downwards on the outside of the cavity (113)
The projection (114) gone out, the roof of the coil block (12) are provided with and the projection (114)
The groove of adaptation.
4. coil assembly according to claim 3, it is characterised in that the wiring board
The bottom wall of moulding (11) is additionally provided with downwardly projecting and institute on the outside of the projection (114)
State the protruding ring (115) being adapted at the top of coil block (12), the protruding ring (115)
Button is located at the outside of the coil block (12).
5. coil assembly according to claim 4, it is characterised in that the wiring board
Moulding (11) is provided with contact pin plug socket (112a), inserted sheet plug socket (112b)；The line
The bottom wall of road plate moulding (11) is provided with cast in the side where contact pin plug socket (112a)
Mouth (116), the inner side of the sprue gate (116) is provided with downwardly projecting and outer openings box
Shape structure (117).
6. coil assembly according to claim 5, it is characterised in that the wiring board
Moulding (11) bottom wall is additionally provided with annular waterproof rib (118), and the waterproof rib (118) is surrounded
The box like structure (117) and the contact pin plug socket (112a).
7. the coil assembly according to claim 5 or 6, it is characterised in that the line
The side of road plate moulding (11) is provided with plug connector (112)；
The contact pin plug socket (112a), the inserted sheet plug socket (112b) are inserted located at described
On fitting (112)；
Or the contact pin plug socket (112a), the inserted sheet plug socket (112b) are in the two
One is on the plug connector (112), another one is located at the phase of the plug connector (112)
Offside.
8. coil assembly according to claim 7, it is characterised in that inserted including one section
Pin (14a) and two sections of contact pins (14b)；
One section of contact pin (14a) is fixedly arranged on the coil block (12), is horizontally disposed with；
Two sections of contact pins (14b) are vertically arranged, and top is plugged in the contact pin plug socket
(112a), bottom are provided with perforation (141), are sheathed on the outer end of one section of contact pin (14a),
Or bottom is provided with breach (142), is held on the outer end of one section of contact pin (14a).
9. coil assembly according to claim 8, it is characterised in that multiple described two
Section contact pin (14b) injection is into a single integrated structure.
10. the assembling of the coil assembly of the electric expansion valve as described in claim any one of 1-9
Method, it is characterised in that comprise the following steps：
Pressing plate (122) is welded in the bottom of the coil injection molding part；
Wiring board (111) is installed on to the correspondence position of the wiring board moulding (11), and
The wiring board (111) and inserted sheet (13), contact pin (14) are welded；
The space of printed circuit board moulding (11)；
Cover plate (15) is welded in wiring board moulding (11) top.
11. assembly method according to claim 10, it is characterised in that printed circuit board
The space specific means of moulding (11) is：
The encapsulating in the space, or assist side (111) surface spray underwater paint.
12. a kind of electric expansion valve, including coil assembly (1), are connected with the coil assembly
Valve body (2)；Characterized in that, the coil assembly (1) is appointed using such as claim 1-9
Coil assembly described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN110608308A (en) * | 2018-06-15 | 2019-12-24 | 杭州三花研究院有限公司 | Electric valve |
| JP2020016383A (en) * | 2018-07-25 | 2020-01-30 | 株式会社デンソー | Heat exchanger |
| CN110735957A (en) * | 2018-07-20 | 2020-01-31 | 杭州三花研究院有限公司 | electronic expansion valve manufacturing method |
| CN111503344A (en) * | 2019-01-30 | 2020-08-07 | 杭州三花研究院有限公司 | Valve assembly |
| WO2020199900A1 (en) * | 2019-04-02 | 2020-10-08 | 浙江盾安人工环境股份有限公司 | Coil component and electronic expansion valve having same |
| EP3783777A1 (en) | 2019-08-22 | 2021-02-24 | TGK CO., Ltd. | Motor operated valve |
| EP3809027A4 (en) * | 2018-06-15 | 2022-05-11 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electric valve |
| CN114811154A (en) * | 2021-01-27 | 2022-07-29 | 盾安环境技术有限公司 | Electronic expansion valve and automobile with same |
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| EP3783777A1 (en) | 2019-08-22 | 2021-02-24 | TGK CO., Ltd. | Motor operated valve |
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| CN114811154B (en) * | 2021-01-27 | 2024-04-02 | 盾安环境技术有限公司 | Electronic expansion valve and automobile with same |
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Application publication date: 20171114 |