JP7256819B2 - Air conditioning system, electronic expansion valve and its electromagnetic coil structure - Google Patents

Description

[001] This application claims the priority of the Chinese patent application with application number 2018212109441, entitled "Air conditioning, electronic expansion valve and electromagnetic coil structure thereof", filed on July 28, 2018, the entire text of which is incorporated by reference. incorporated here.

[002] The present application relates to the technical field of manufacturing air conditioners, and in particular to air conditioners, electronic expansion valves and electromagnetic coil structures thereof.

[003] An electronic expansion valve, also called a throttle valve or a control valve, is one of the main elements in an air conditioning system and mainly plays a role of throttle pressure reduction and flow control. An electronic expansion valve generally includes an electromagnetic coil structure and a valve body structure connected to the electromagnetic coil structure. Electronic expansion valves must inevitably circulate between workstations such as warehouses, workshops, etc. before installation. Everything is realized by grasping.

[004] In the flow process of the electronic expansion valve, the root of the lead wire is bent, so that the skin of the lead wire is very likely to rupture, break, etc., especially in a low-temperature environment. The lead wire is hard and easily brittle, and when the lead wire is bent, it becomes more prone to breakage, which greatly affects the service life of the electronic expansion valve.

[005] Based on this, it is necessary to provide an air conditioning system, an electronic expansion valve, and an electromagnetic coil structure thereof with a long service life in order to address the above technical problems.

[006] The electromagnetic coil structure comprises:
[007] a coil assembly including a packing housing and a coil received and secured within the packing housing;
[008] An insulating protective plate provided on a side wall of a packing housing, wherein a storage chamber having a wire outlet is formed in a region surrounded by the insulating protective plate and the side wall of the packing housing, and the storage chambers communicate with each other. an insulation protection plate including a fixed chamber and an extension chamber, the extension chamber being provided in proximity to the wire outlet;
[009] a sealant body that is housed in the fixing chamber and cured to form a sealant surface on one end near the wire outlet;
[010] A lead wire assembly including a lead wire, one end of the lead wire being embedded in the sealant body and electrically connected to the coil, and the other end extending from the wire outlet. .

[011] In one embodiment, the insulating protection plate includes a fixed portion and an extended portion spaced apart from the side wall of the packing housing, the extended portion being provided proximate the wire outlet, and the fixed portion and the housing. A fixed chamber is formed in the area surrounded by the side wall of the packing housing, and an extension chamber is formed in the area surrounded by the side wall of the extension and the packing housing.

[012] In one embodiment, the distance between the extension and the side wall of the packing housing is less than the distance between the fixed part and the side wall of the packing housing.

[013] In an embodiment, the edge of the extension is provided with an outer fold.

[014] In one embodiment, the included angle between the outer folded portion and the extending direction of the insulating protection plate is an acute angle.

[015] In one embodiment, the insulating protection plate has a support surface at one end close to the wire outlet, the lead wire can abut against the support surface, and the packing housing has a fixing surface at one end close to the wire outlet. and the distance from the support surface to where the lead extends from the sealant surface is greater than the distance from the support surface to the fixing surface.

[016] The insulating protection plate includes a body, and the distance from the support surface to the position where the lead extends from the sealant surface is greater than the distance from the body to the packing housing.

[017] In one embodiment, a side wall of the packing housing is provided with a mounting portion, an insulating protective plate is mounted on the mounting portion, and the insulating protective plate and the surface of the mounting portion form a receiving chamber.

[018] In one embodiment, the coil assembly further comprises a pin, the lead assembly further comprises a circuit board, the pin fixed to the packing housing, one end of the pin electrically connected to the coil and the other end fixed. The circuit board is housed in the fixing chamber and electrically connected to one end of the lead wire embedded in the sealant body, and the pin is inserted into the circuit board and electrically connected to the circuit board. to provide electrical connection between the leads and the coil.

[019] The present application further provides the following technical aspects.

[020] The electronic expansion valve comprises:
[021] The electromagnetic coil structure described above;
[022] A valve body structure including a casing having a hollow structure, a rotor housed in the casing, and a spindle interlockingly connected to the rotor, wherein the housing is provided at one end of the casing, and the rotor is combined with a coil. , and a valve body structure.

[023] The present application further provides the following technical aspects.

[024] The air conditioning system includes the electronic expansion valve described above.

[025] The above air conditioning, electronic expansion valve and its electromagnetic coil structure have the following advantages.

[026] Since the sealant body is accommodated in the fixing chamber and hardened, the extension chamber protrudes from the sealant surface, so that the extension chamber serves to limit the position of the bent lead wire. Therefore, when the lead wire is bent in the flow rotation process of the electronic expansion valve, the edge of the wire outlet can effectively reduce the bending angle of the lead wire, so that the lead wire is bent too much and the lead wire is skinned. It greatly reduces the probability of rupture of the lead wire, breakage of the lead wire, etc., prolongs the service life of the lead wire, and further extends the service life of the electromagnetic coil structure. Therefore, the service life of the electronic expansion valve and air conditioner including the electromagnetic coil structure described above is also longer.

[027] Fig. 2 is a structural schematic diagram of an electronic expansion valve provided by the present application; [028] An electromagnetic coil structure provided by the present application. [029] Fig. 3 is a partial cross-sectional view of an electromagnetic coil structure provided by the present application; [030] Fig. 3A is an enlarged partial view of Fig. 3A provided by the present application; [031] FIG. 4 is a structural schematic diagram with distance symbols of FIG. 3 provided by the present application; [032] Fig. 6 is a bottom view of Fig. 5 provided by the present application; [033] Fig. 1 is a structural schematic diagram of one embodiment of a protection plate provided by the present application; [034] Fig. 8 is a rear view of the guard plate of Fig. 7 provided by the present application; [035] Fig. 1 is a structural schematic diagram of one embodiment of a protection plate provided by the present application; [036] Fig. 10 is a left side view of the guard plate of Fig. 9 provided by the present application; [037] Fig. 2 is a structural schematic diagram of one embodiment of a protection plate provided by the present application; [038] Fig. 12 is a left side view of the guard plate of Fig. 11 provided by the present application;

[039] In the figure, 100 represents the electronic expansion valve, 10 represents the electromagnetic coil structure, 110 represents the coil assembly, 111 represents the packing housing, 1111 represents the side wall of the packing housing, and 112 represents the coil. , 113 represents the pin, 120 represents the insulating protection plate, 120a represents the main body, 1201 represents the fixing part, 1202 represents the extension part, 120b represents the connection part, 120c represents the welding line, 121 represents the receiving chamber, 122 represents the wire outlet, 1211 represents the fixing chamber, 1212 represents the extension chamber, 122 represents the wire outlet, 123 represents the outer fold, and 124 represents the support surface. , 130 represents the sealant body, 131 represents the sealant surface, 140 represents the lead wire assembly, 141 represents the lead wire, 142 represents the circuit board, 20 represents the valve body structure, and 21 represents the casing. , 211 represent connecting members.

[040] Hereinafter, the technical aspects in the examples of the present application will be described clearly and completely with reference to the drawings in the examples of the present application, but the described examples are merely part of the embodiments of the present application. , are not all examples. All other embodiments that a person skilled in the art can obtain without creative efforts based on the embodiments in the present application shall all fall within the protection scope of the present application.

[041] It should be noted that when an assembly is said to be "embedded" in another assembly, it may be directly on the other assembly or there may be intervening assemblies. When one assembly is considered to be "provided" in another assembly, it may be provided directly in the other assembly or there may be intervening assemblies present at the same time. When one assembly is considered "fixed" to another assembly, it may be fixed directly to the other assembly, or there may be intervening assemblies at the same time.

[042] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application applies. As used herein, the terminology used in the specification of the present application is for illustrative purposes only and is not intended to be limiting of the present application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated items.

[043] The present application provides an air conditioning system (not shown), and the air conditioning system can be applied to fields such as freezers, vehicles, and households. As shown in FIG. 1, the air conditioning system includes an electronic expansion valve 100, which is attached to a pipeline and used to regulate the flow rate of refrigerant in the air conditioning system.

[044] Of course, in addition to the electronic expansion valve 100, the air conditioning system further includes members such as a compressor, a heat exchanger, etc., and each member cooperates with each other to achieve the refrigeration and/or refrigeration function of the air conditioning system. do.

[045] Still referring to FIG. 1, the electronic expansion valve 100 includes an electromagnetic coil structure 10 and a valve body structure 20, the electromagnetic coil structure 10 is attached to the valve body structure 20, and the electromagnetic coil structure 10 mainly rotates. It is used to provide a magnetic field to drive movement of the mechanism within the valve body structure 20 to achieve the flow regulation function of the electronic expansion valve 100 .

[046] The valve body structure 20 includes a casing 21, a spindle (not shown) and a rotor (not shown). , the rotor and the spindle are accommodated in the casing, one end of the spindle is connected to the rotor, the other end is combined with the valve port, the rotor is combined with the electromagnetic coil structure 10, and the magnetic field generated by the electromagnetic coil structure 10 drives the rotor to rotate, and the rotor drives the spindle to reciprocate to control the opening size of the valve opening, and also realize the adjustment of the refrigerant flow rate.

[047] Of course, in addition to the members such as the casing 21, spindle and rotor described above, the valve body structure 20 further includes members such as a screw structure. to achieve the function of flow regulation.

[048] Referring also to FIGS. The electromagnetic coil structure 10 is attached to the casing 21, the insulation protection cover 120 is provided on the coil assembly 110 to surround and form a receiving chamber 121 having the coil assembly 110 and a wire outlet 122, and the sealant body 130 surrounds the receiving chamber 121. One end of the lead wire assembly 140 is embedded in the sealant body 130 and electrically connected to the coil assembly 110 , and the other end extends out of the housing chamber 121 from the wire outlet 122 . It is used to extend out and connect to an external power supply to realize the energization of the electromagnetic coil structure 100 .

[049] The coil assembly 110 includes a packing housing 111 and a coil 112, the coil 112 is housed and fixed in the packing housing 111, the packing housing 111 mainly plays a role of support and electrical insulation, and the packing housing 111 By being attached to the casing 21, the attachment of the electromagnetic coil structure 10 and the valve body structure 20 is realized, the coil 112 is used as a stator, the coil 112 is provided coaxially with the rotor, and the coil 112 generates a magnetic field after energization. generated to move and rotate the rotor.

[050] Preferably, the packing housing 111 has an open hollow structure. In general, the packing housing 111 is made of an insulating and high-strength material such as plastic or mica so that the packing housing 111 has electrical insulating properties and a large supporting force.

[051] In this embodiment, the packing housing 111 is injection molded from plastic. The packing housing 111 has an annular shape. Since the casing 21 also normally has a cylindrical structure, if the packing housing 111 is set to have an annular shape, the connection between the packing housing 111 and the casing 21 can be made more intimate. The connection with is made more robust, and the structural stability of the electronic expansion valve 100 is improved.

[052] Preferably, a connecting member 211 is provided between the packing housing 111 and the casing 21, one end of the connecting member 211 is connected to the packing housing 111, and the other end is connected to the casing 21, whereby the packing housing A connection between 111 and the casing 21 is realized.

[053] Furthermore, the coil 112 is embedded in the packing housing 111, that is, the packing housing 111 covers the outer surface of the coil 112. As shown in FIG. Since the coil 112 is provided along the circumferential direction of the packing housing 111, the coil 112 generates a rotating magnetic field inside the packing housing 111 after energization, thereby driving the movement of the rotor.

[054] Referring also to Figs. 7 and 8 , in one embodiment, the insulation protection cover 120 is provided on the side wall 1111 of the packing housing 111, and includes the side wall 1111 of the packing housing 111 and the receiving chamber 121 having the wire outlet 122. to form The receiving chamber 121 is divided into a fixed chamber 1211 and an extension chamber 1212 which communicate with each other. The extension chamber 1212 is provided at one end near the wire outlet 122, and the sealant body 130 is accommodated in the fixed chamber 1211 and cured.

[055] Optionally, the insulating cover 120 can be made of a material with good electrical insulation, such as plastic, ceramic, asbestos, ie, the insulating cover 120 can have insulating properties. The insulating protective cover 120 can be fixed to the side wall 1111 of the packing housing 111 by welding, gluing, screw connection, or other methods. In this embodiment, the insulation protection cover 120 is fixed to the side wall 1111 of the case 11 by ultrasonic welding.

[056] Further, as shown in Figs. 3 and 7 , the insulation protection cover 120 includes a main body 120a and a connecting portion 120b, and is surrounded by the main body 120a and the side wall 1111 of the packing housing 111 to provide a space between the main body 120a and the side wall 1111. A housing chamber 121 having a wire lead-out port 122 is formed in the body 120a, and the connecting portion 120b is provided on the side of the main body 120a facing the packing housing 111, and is used to realize connection between the main body 120a and the packing housing 111. .

[057] Preferably, the cross section of the main body 120a is "U"-shaped, the "U"-shaped opening of the main body 120a is provided toward the packing housing 111, and the connecting portion 120b is connected to the "U" of the main body 120a. It is arranged in the circumferential direction of the letter-shaped opening, and an opening is provided on one side of the main body 120a, that is, the wire drawing port 121 is formed.

[058] Further, the main body 120a includes a fixing portion 1201 and an extension portion 1202 which are provided spaced apart from the side wall 1111 of the packing housing 111, and the extension portion 1202 is provided in the vicinity of the wire outlet 121, and the fixing portion 1201 surrounds the side wall 1111 of the packing housing 111 and the fixing chamber 1211, and the extension 121b surrounds the side wall 1111 of the packing housing 111 and the extension chamber 1212. FIG.

[059] Furthermore, the connection part 120b is located on the side of the insulation protection cover 120 facing the casing 21, and the connection part 120b is adhered to the casing 21 and welded by ultrasonic waves to form the insulation protection cover 120 and the packing housing. 111 connection is realized.

[060] Preferably, the connecting portion 120b is flat, the side wall 1111 of the packing housing 111 is provided with the mounting portion 1113, the outer surface of the mounting portion 1113 is also flat, the connecting portion 120b is attached to the mounting portion 1113, and A receiving chamber 121 is formed between the insulating protective cover 120 and the mounting portion 1113 . It is understood that the attachment portion 1113 can also be used as an identification portion to identify the location of the chamber 121 and make attachment of the lead assembly 140 more convenient and quick.

[061] Further, as shown in FIG. 8, a welding line 120c is provided on the connecting portion 120b, and the welding line 120c is fused with the packing housing 111 during welding to achieve a welding effect.

[062] Preferably, the cross section of the welding line 120c is triangular, and the connecting portion 120b is not provided with the welding line 120c at a position close to the wire lead-out port 121.

[063] As shown in FIGS. One end of the lead wire 141 is embedded in the sealant body 130 and electrically connected to the coil 112 , and the other end extends from the wire outlet 122 and is electrically connected to an external power source to connect the coil 112 to the coil 112 . to achieve energization. Therefore, the primary role of lead 141 is to connect coil 112 and an external power source so that the external power source provides power to coil 112 .

[064] The coil assembly 110 further includes a pin 113 fixed to the packing housing 111, and one end of the pin 113 is connected to the coil 112 and the other end is housed in the fixing chamber 1211. The lead wire assembly 140 further includes a circuit board 142, which is housed within the fixing chamber 1211 and electrically connected to one end of the lead wire 141 embedded within the sealant body 130, and the pins 113 are connected to the circuit. It is inserted into the board 142 and electrically connected to the circuit board 142 to achieve electrical connection between the lead wire 141 and the coil 112 .

[065] Specifically, the pin 113 is a bar-shaped metal member. When the lead wire 141 and the coil 112 need to be electrically connected, the pin 113 can be inserted into the circuit board 142, which is convenient and quick to install.

[066] The sealant body 130 is a gel that is injected into the securing chamber 1211 and after curing forms the sealant body 130 to secure one end of the lead wire assembly 140 within the securing chamber 1211 . The sealant body 130 has a sealant surface 131 formed at one end near the wire drawing port 121 . It is understood that the extension 1202 protrudes from the sealant surface 131 since the sealant body 130 is located within the fixing chamber 1211 . When the lead wire 141 is bent during the circulating process of the electronic expansion valve 100, the extension chamber 1212 serves to restrict/support the position of the lead wire 141, thereby adjusting the bending angle of the lead wire 141 on the sealant surface 131. reduce the probability of the lead wire 141 being excessively bent, causing the lead wire skin to rupture, the lead wire 141 to break, etc., effectively extending the service life of the lead wire 141, and the electromagnetic coil structure 10 has a longer service life.

[067] Furthermore, as shown in FIG. 5, the insulation protection cover 120 has a support surface 124 at one end near the wire outlet port 122, and the lead wire 141 may come into contact with the support surface 124 under the action of an external force. The packing housing 111 has a fixing surface 1112 at one end near the wire outlet 122, the distance from the support surface 124 to the position where the lead wire 141 extends from the sealant surface 131 is L1, and the support surface 124 to the fixing surface. The distance to 1112 is L2, and the relationship between L1 and L2 is L1>L2>0.

[068] The sealant body 130 is generally molded by pouring a gel material into the storage chamber 121, and it is understood that the gel material has fluidity before the sealant body 130 is molded. If the distance from the support surface 124 to the position where the lead wire 141 extends from the sealant surface 131 is smaller than the distance from the support surface 124 to the fixing surface 1112 (i.e., L1<L2), during the molding process of the sealant body 130 , the gel material not only overflows the receiving chamber 121 and then flows onto the fixing surface 1112 and contaminates the packing housing 111, but also the distance from the support surface 124 to where the lead wire 141 extends from the sealant surface 131. Decrease. Therefore, setting the distance from the support surface 124 to the position where the lead wire 141 extends from the sealant surface 131 to be smaller than the distance from the support surface 124 to the fixing surface 1112 (that is, L1>L2) prevents the gel material from overflowing. not only prevent the packing housing 111 from being contaminated, but also effectively extend the distance to the point where the lead wire 141 extends from the sealant surface 131, thereby preventing the bent lead wire 141 from , the bending angle of the sealant surface 131 of the lead wire 141 is reduced to reduce the probability that the lead wire 141 will break on the sealant surface 131 and the lead wire 141 will break.

[069] It will be appreciated that the sealant body 130 primarily serves the role of sealing, fixing and electrical insulation. In this embodiment, the sealant body 130 is generally made of a gel material with good electrical insulation performance, such as polyester, epoxy, polyurethane, polybutadiene acid, silicone, polyesterimide, and polyamide. Specifically, the sealant body 130 is formed by pouring a liquid gel material into the fixing chamber 1211 and cooling it. Therefore, the shape of the sealant body 130 matches the shape of the inner wall of the fixing chamber 1211 .

[070] Preferably, the sealant body 130 is an epoxy gel. Since the epoxy gel has strong adhesion, good electrical performance, mechanical performance, high chemical stability and dimensional stability, the sealant body 130 also has good electrical performance, good mechanical performance, high chemical stability and strong adhesion. It is understood to have advantages such as power. Therefore, the gel 130 maintains good connection stability with the accommodation chamber 121, and at the same time has advantages such as good electrical insulation performance and resistance to deformation due to external force.

[071] Further, as shown in Figs. 5 and 6, the distance from the main body 120a to the mounting surface of the side wall 1111 of the packing housing 111 provided with the circuit board 142 is L3, and the relationship between L3 and L1 is L1>L3, that is, the distance from the support surface 124 to the position where the lead wire 141 extends from the sealant surface 131 is greater than the distance from the main body 120a to the packing housing 111.

[072] If the distance from the support surface 124 to the position where the lead wire 141 extends from the sealant surface 131 is set larger than the distance from the main body 120a to the packing housing 111, the sealant surface 131 of the lead wire 141 extends from the edge of the extension chamber 1212. In addition, the bending angle of the bent lead wire 141 on the sealant surface 131 can be made smaller, and the bent lead wire 141 can be prevented from tearing the skin of the lead wire, leading It will be appreciated that the probability of occurrence of breakage or the like of the wire 141 will be reduced and the lead wire 141 will have a longer service life.

[073] Referring also to FIGS. 9 and 10, in one embodiment, the distance between the extension 1202 and the side wall 1111 of the packing housing 111 is L5 , and the distance between the fixed portion 1201 and the side wall 1111 of the packing housing 111 is L5. The interval between is L4 , and the relationship between L4 and L5 is 0< L5 < L4 .

[074] It is understood that the fixing chamber 1211 is used to receive and fix the pins 113 and the circuit board 142, and serves to protect the pins 113, the circuit board 142 and the leads 141. FIG. On the other hand, the extension chamber 1212 mainly plays a role of supporting the bent lead wire 141 . Therefore, in addition to ensuring the electrical safety of the lead wire 141, the circuit board 142 and the pin 113 in the fixing chamber 1211, the distance between the extension 1202 and the side wall 1111 of the packing housing 111 is effectively reduced, The bending angle of the lead wire 141 on the sealant surface 131 can be further reduced, and the probability of the lead wire 141 breaking the lead wire skin on the sealant surface 131, breaking the lead wire 141, etc. can be reduced, and the lead wire 141 Effectively extend the service life of the

11 and 12, in one embodiment, the extension part 1202 is provided with an outer folded part 123 at one end near the wire drawing port 121, and the extending direction of the outer folded part 123 and the extension part 1202 is aligned. is provided to form an included angle, and the icon for this included angle is β. The outer folded portion 123 serves to positionally limit/support the bent lead wire 141, and when the lead wire 141 is bent, the lead wire 141 is positionally limited/supported by the outer folded portion 123 to be relatively relatively small. It will be appreciated that a smoother transition is created, ie the angle of the secondary bend of the lead wire 141 is reduced, reducing the risk of lead wire skin rupture and the like.

[076] The included angle formed by the outer folded portion 123 and the extending direction of the extension portion 1202 is an acute angle (that is, the included angle formed by the outer folded portion 123 and the extending direction of the extended portion 1202 is smaller than 90 degrees, β<90°). Preferably, if this angle is set at an acute angle, the lead wire 141 can be supported by the outer fold 123 to form an acute transition, and the bend angle of the folded lead wire 141 at the fold 123 will be It is further reduced, which is understood to reduce the probability that the bent lead wire 141 will cause lead wire skin rupture, lead wire 141 tearing, etc. at the edge of the extension 1202 .

[077] The advantage of the present application is that since the sealant body 130 is accommodated in the fixing chamber 1211 and cured, the extension portion 1202 protrudes from the sealant surface 131, so that the extension portion 1202 supports/supports the bent lead wire 141. It has a position-limiting role. When the lead wire 141 is bent in the flow rotation process of the electronic expansion valve 10, the edge of the wire outlet port 122 can effectively reduce the bending angle of the lead wire 141, and the lead wire 141 is bent too much to prevent the lead from bending. It reduces the probability of wire sheath breakage, lead wire 141 breakage, etc., effectively prolongs the service life of the lead wire 141, and further extends the service life of the electromagnetic coil structure 10.

[078] Since the electromagnetic coil structure 10 has a long service life, it is understood that the electronic expansion valve 10 including the electromagnetic coil structure 10 described above and the air conditioner also have a longer service life.

[079] The technical features of the embodiments described above can be combined arbitrarily. However, as long as there is no contradiction in the combination of these technical features, any of them should be considered within the scope described herein.

[080] The foregoing examples are merely illustrative of some embodiments of the present application, and while the descriptions are relatively specific and detailed, they do not limit the scope of the claimed inventions. should not be understood as It should be pointed out that for those skilled in the art, several variations and improvements are possible without departing from the spirit of the present application, and all fall within the protection scope of the present application. Therefore, the scope of protection of the patent of this application shall be subject to the attached claims.

Claims (8)

a coil assembly (110) comprising a packing housing (111) and a coil (112) received and secured within the packing housing (111);
An insulating protective plate (120) provided on a side wall (1111) of the packing housing (111), the region surrounded by the insulating protective plate (120) and the side wall (1111) of the packing housing (111) An accommodation chamber (121) having a wire outlet (122) is formed in the an insulating protection plate (120) provided close to the wire outlet (122);
a sealant body (130) which is housed and solidified in the fixing chamber (1211) and has a sealant surface (131) formed at one end near the wire drawing port (122);
A lead wire assembly (140) comprising a lead wire (141) and a circuit board (142) , wherein one end of the lead wire (141) is embedded in the sealant body (130) and attached to the circuit board (142). a lead wire assembly (140) connected and electrically connected to said coil (112), the other end extending from said wire outlet (122);
The insulating protection plate (120) is
A fixing portion (1201) and an extension portion (1202) respectively spaced apart from the side wall (1111) of the packing housing (111), and the extension portion (1202) close to the wire outlet (122). a support surface (124) provided at the tip of the lead wire (141) that can come into contact when the lead wire (141) is bent by an external force ;
including
The extension part (1202) extends from the fixed part (1201) and is provided in the vicinity of the wire outlet (122),
The fixing chamber (1211) is formed in a region surrounded by the fixing portion (1201) and the side wall (1111) of the packing housing (111), and the extension portion (1202) and the side wall (111) of the packing housing (111) is formed. 1111) the extension chamber (1212) is formed in the area surrounded by
The circuit board (142) is housed in a fixing chamber (1211) and is provided on the side wall (1111) of the packing housing (111),
The distance (L1) between the horizontal extension of the support surface (124) and the horizontal extension of the position where the lead wire (141) extends from the sealant surface (131) is defined by the fixing portion (1201). to the installation surface of the side wall (1111) of the packing housing (111) on which the circuit board (142) is installed (L3),
Electromagnetic coil structure. The insulating protection plate (120) includes a connecting portion (120b) provided on the side wall (1111) of the packing housing (111),
A step is provided at a portion of the fixing portion (1201) that is connected to the extension portion (1202),
The distance (L5) between the portion of the extension portion (1202) connected to the step and the connection portion (120b) is equal to the distance between the fixed portion (1201) and the connection portion (120b). 2. The electromagnetic coil structure of claim 1, which is less than (L4) . The electromagnetic coil structure according to claim 1, wherein an edge of said extension (1202) is provided with a fold (123). The electromagnetic coil structure according to claim 3, wherein the included angle between the folded portion (123) and the extending direction of the insulating protection plate (120) is an acute angle. The packing housing (111) has a fixing surface (1112) at one end close to the wire outlet (122), and the horizontal extension of the supporting surface (124) and the lead wire (141) are connected to the sealant surface. The distance (L1) to the horizontal extension of the position extending from (131) is the distance (L1) between the horizontal extension of the support surface (124) and the horizontal extension of the fixing surface (1112). 2. The electromagnetic coil structure of claim 1, greater than L2). Said coil assembly (110) further comprises a pin (113) , said pin (113) is fixed to said packing housing (111), and one end of said pin (113) is electrically connected to said coil (112). The other end is housed in the fixing chamber (1211), and the circuit board (142) is electrically connected to one end of the lead wire (141) embedded in the sealant body (130). and the pin (113) is inserted into the circuit board (142) and electrically connected to the circuit board (142) to electrically connect the lead wire (141) and the coil (112). The electromagnetic coil structure according to claim 1, which realizes connection. an electromagnetic coil structure according to any one of claims 1 to 6;
A valve body structure (20) including a casing (21) having a hollow structure, a rotor housed in the casing (21), and a spindle interlockingly connected to the rotor, wherein the packing housing (111) includes the a valve body structure (20) provided at one end of a casing (21), said rotor being associated with said coil (112). An air conditioning system comprising an electronic expansion valve according to claim 7.

Images