Coil wiring structure of contactor

Abstract

The utility model provides a coil wiring structure of a contactor, which comprises a coil wiring sheet connected between a coil wiring terminal and a coil winding, the coil wiring sheet is in plug-in fit with a coil winding conductive sheet, the coil winding conductive sheet comprises a plug-in part, a support part and an enameled wire winding part which are integrally formed, and the enameled wire winding part is connected with the coil wiring terminal. The plugging part comprises two clamping plates which are oppositely arranged, and a clamping gap for clamping a conductor is formed between the two clamping plates; the supporting part comprises a first supporting surface and a second supporting surface opposite to the first supporting surface, at least one limiting surface is connected between the first supporting surface and the second supporting surface, and the first supporting surface and the second supporting surface of the supporting part are connected with the two clamping plates of the inserting part respectively; the coil wiring structure of the contactor has the advantages that the structure is simple, the process is easy to realize, and the coil wiring structure is stably and reliably electrically connected with the outside.

Description

Technical Field

[0001] The utility model relates to the field of electronic power equipment, and particularly relates to a coil wiring structure of a contactor. Background Art

[0002] Contactors are widely used for opening and closing power and controlling circuits, and they use contacts to open and close circuits. The coil wiring structure of a contactor is a key component for realizing the energization of an external control power supply and a coil winding. Generally, the coil wiring structure of a contactor includes a coil wiring piece connected between a coil wiring terminal and a coil winding, and a coil winding conductive piece cooperatively connected with the coil wiring piece.

[0003] The coil winding conductive piece is a key component of the coil. It is placed at the incoming and outgoing wire ends of the coil and installed on the coil skeleton. The enameled wires at the incoming and outgoing wire ends of the coil winding are respectively wound around the coil winding conductive piece and electrically connected to it. External signals control the energization and de-energization of the coil by energizing and de-energizing the conductive pieces at the incoming and outgoing wire ends. With the development of the electronics industry, there are more and more types of coil winding conductive pieces. However, in the prior art, the coil winding conductive pieces have problems such as complex structure, cumbersome manufacturing, and unreliable electrical contact. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the technical defects in the prior art and provide a coil wiring structure of a contactor with a simple structure, easy process implementation, and stable and reliable external electrical connection.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The present application provides a coil wiring structure of a contactor, including a coil wiring piece connected between a coil wiring terminal and a coil winding. The coil includes a coil skeleton and a coil winding wound on the coil skeleton. The coil winding conductive piece is fixed on the coil skeleton and electrically connected to the coil winding. The coil wiring piece is in plug-in fit with the coil winding conductive piece. The coil winding conductive piece includes an integrally formed plug-in portion, a support portion, and an enameled wire winding portion.

[0007] The plug-in portion includes two clamping plates arranged oppositely. A clamping gap for clamping a conductor is formed between the two clamping plates for clamping connection with the coil wiring piece.

[0008] The support portion is used for fixedly connecting with the coil skeleton. The support portion includes a first support surface and a second support surface arranged oppositely to the first support surface. At least one limiting surface is connected between the first support surface and the second support surface. The first support surface and the second support surface of the support portion are respectively connected to the two clamping plates of the plug-in portion.

[0009] The enameled wire winding part is in the shape of a long plate, and the enameled wire winding part is connected to the support part. Among them, the extending direction of the enameled wire winding part is perpendicular to the direction in which the coil connection piece is inserted into the coil winding conductive piece, and the enameled wire winding part can be bent and rotated around its connection with the support part.

[0010] In this embodiment, by setting the insertion part, the support part, and the enameled wire winding part as an integrally formed structure, the electrical conductivity stability of the coil winding conductive piece is greatly improved. At the same time, the two clamping plates of the insertion part of the coil winding conductive piece can be used to clamp the coil connection piece. Through the clamping method, the electrical contact stability and reliability between the coil winding conductive piece and the coil connection piece can be effectively improved. The first support surface and the second support surface of the support part can fixedly connect the support part to the coil skeleton. The limiting surface it has can cooperate with the corresponding structural features on the coil skeleton to achieve the limiting function. The enameled wire winding part is connected to the support part by bending and rotating, which is convenient for winding the incoming end or the outgoing end of the enameled wire. At the same time, after winding, the enameled wire winding part can be rotated and bent inside the coil skeleton to avoid the protruding enameled wire winding part interfering with the assembly of the coil winding product body and affecting the production efficiency.

[0011] In a possible implementation manner, the two clamping plates are in an arc structure, and the distance between the two clamping plates in the middle is less than the distance at both ends. By setting the two clamping plates on the insertion part as an arc structure and the distance between the two clamping plates in the middle being less than the distance at both ends, the two clamping plates can have a certain elasticity, which can not only achieve a more stable clamping effect but also facilitate clamping connection conductors of different thicknesses.

[0012] In a possible implementation manner, one end of the enameled wire winding part is bendably and rotatably connected to the support part, and the other end is provided with a first convex structure as an enameled wire anti - detachment part.

[0013] By setting an enameled wire anti - detachment area on the enameled wire winding part, it can prevent the enameled wire from falling off during use and affecting the service life of the coil winding conductive piece. At the same time, by setting the connection method between the enameled wire winding part and the support part as a bendable and rotatable connection, the enameled wire winding part can be rotated and bent inside the coil skeleton after the enameled wire is wound, avoiding the protruding enameled wire winding part interfering with the assembly of the coil winding product body and affecting the production efficiency.

[0014] In a possible implementation manner, the enameled wire winding part is further provided with an enameled wire welding part. Among them, the enameled wire welding part is formed by bending the protruding part on the longitudinal side of the enameled wire winding part, and one side of the bent protruding part fits or is relatively spaced from the longitudinal side of the enameled wire winding part.

[0015] By providing an enameled wire welding part on the enameled wire winding part, the structure is clear, the shape is beautiful, the welding is convenient, the operation is facilitated, and the maintenance is convenient.

[0016] In a possible implementation manner, the enameled wire welding part includes a bending part and a welding surface that is attached to or relatively spaced from the longitudinal side surface. The bending part protrudes from the enameled wire winding part to form a second convex structure, and the space between the second convex structure and the first convex structure serves as an enameled wire winding area.

[0017] By providing the enameled wire winding area, it can be used to wind the enameled wire led out from the coil winding. By providing the welding surface, the outgoing end or incoming end of the enameled wire can be welded thereto, preventing it from falling off during use and affecting the service life of the conductive sheet of the coil winding.

[0018] In a possible implementation manner, the support part includes two limiting surfaces, which are respectively a first limiting surface and a second limiting surface. The first limiting surface and the second limiting surface are oppositely arranged and located between the first support surface and the second support surface, forming a frame-shaped support part.

[0019] By oppositely arranging the first limiting surface and the second limiting surface, the limiting and locking of the conductive sheet of the coil winding can be realized, preventing the conductive sheet of the coil winding from falling off the coil skeleton during use. The first limiting surface, the first support surface, the second limiting surface, and the second support surface are sequentially connected to form a frame-shaped support part, which can be used to support the conductive sheet of the coil winding.

[0020] In a possible implementation manner, the height of the first limiting surface is less than the height of the second limiting surface.

[0021] By setting the height of the first limiting surface to be less than the height of the second limiting surface, it can cooperate with the corresponding structural features on the coil skeleton to realize the limiting and locking functions, and at the same time play a role in preventing reverse installation.

[0022] In a possible implementation manner, the first support surface and the second support surface are respectively the extended surfaces of one end of two clamping plates of the plug-in part. The direction in which the two clamping plates extend towards the first support surface and the second support surface is the first direction, which is also the direction in which the coil connection piece is inserted into the conductive sheet of the coil winding;

[0023] The second limiting surface is connected between the first support surface and the second support surface along the second direction;

[0024] A limiting part extending in the third direction is provided on the side of the first support surface in a convex manner. The first direction, the second direction, and the third direction are perpendicular to each other;

[0025] The enameled wire winding part is connected to the side of the second support surface and can be bent and rotated around the side of the second support surface.

[0026] In a possible implementation manner, a protruding limiting portion is provided on the supporting portion for limiting with the coil bobbin.

[0027] By providing a protruding limiting portion on the supporting portion, it can be cooperatively installed with a corresponding groove on the coil bobbin, and is used to lock the coil winding conductive sheet on the coil bobbin, playing a role of limiting and fixing the coil winding conductive sheet in the second direction.

[0028] In a possible implementation manner, two coil connection pieces are provided on the coil bobbin. The enameled wire winding parts of the two coil connection pieces are respectively connected to the two ends of the coil winding, and two coil connection terminals are respectively arranged directly above the two coil connection pieces; the coil connection piece includes an integrally formed first connection piece and a second connection piece. The second connection piece is a planar sheet-like structure for connecting with the coil connection terminal. The first connection piece is bent and connected to the second connection piece, and the first connection piece is inserted between two clamping plates of the coil winding conductive sheet;

[0029] The coil connection terminal includes a connection screw, a pressing piece and a second connection piece serving as a connection piece. A first hole is provided on the second connection piece. Wherein, the connection screw passes through the pressing piece and is connected to the second connection piece, and the connection screw is used to drive the pressing piece to press the wire tightly on the second connection piece. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of an embodiment of the contactor of the present utility model;

[0031] Figure 2 is a schematic structural diagram of the front side of an embodiment of the coil winding conductive sheet of the present utility model;

[0032] Figure 3 、 Figure 4 is a schematic structural diagram of the back side of an embodiment of the coil winding conductive sheet of the present utility model;

[0033] Figure 5 is a schematic structural diagram of the enameled wire winding part of the coil winding conductive sheet embodiment of the present utility model before bending along its connection with the supporting portion;

[0034] Figure 6 is a schematic structural diagram of the enameled wire winding part of the coil winding conductive sheet embodiment of the present utility model after bending along its connection with the supporting portion;

[0035] In the figure, there are coil inlet terminal A1; coil outlet terminal A2; coil connection piece 100; conductive piece 101 of coil winding; insertion part 1; support part 2; enameled wire winding part 3; enameled wire winding area 33; second support surface 22; enameled wire anti-dropping part 31; enameled wire welding part 32; bending part 321; welding surface 322; first support surface 21; second support surface 22; first limiting surface 23; second limiting surface 24; limiting part 4; first connection piece 01; second connection piece 02; connection screw 102; pressure piece 103; coil skeleton 104. Detailed implementation mode

[0036] The following embodiments given in conjunction with the drawings further illustrate the specific implementation modes of the present invention. The protection scope of the present invention is not limited to the descriptions of the following embodiments.

[0037] The contactor includes a contact system and an electromagnetic system. The contact system includes a static contact, a moving contact and a contact support. The moving contact is arranged on the contact support. The electromagnetic system includes a moving iron core and a coil for driving the moving iron core to move. The moving iron core is connected to the contact support and is used to drive the contact support to move linearly up and down, so that the moving contact contacts and separates from the static contact. Moving contacts are arranged at both ends of each moving contact and contact or separate from two static contacts arranged at both ends of the contactor. Two contact connection terminals respectively connected to the two static contacts are arranged at both ends of the contactor. A coil connection terminal electrically connected to the coil of the electromagnetic system is also arranged on the contactor. The two contact connection terminals are respectively used as the inlet end and the outlet end to connect the power supply and the load, and the coil connection terminal is used to connect the control power supply to supply power or not supply power to the coil, so as to drive the moving iron core to drive the contact support to move.

[0038] The contactor of this embodiment is divided into upper, middle and lower three-layer structures according to the hierarchical structure. Among them, the electromagnetic system is arranged in the lower layer structure, the contact system is arranged in the middle layer structure, the contact connection terminals are arranged at both ends of the middle layer structure or the upper layer structure, and the coil connection terminals are arranged at both ends of the middle layer structure or the upper layer structure.

[0039] Figure 1 The structural schematic diagram of the contactor is shown. In this embodiment, the coil of the electromagnetic system is arranged in the lower layer structure of the contactor, and two coil connection terminals are arranged at both ends of the upper layer structure of the contactor. The two coil connection terminals are respectively the coil inlet terminal A1 and the coil outlet terminal A2, and the two coil connection terminals are respectively electrically connected to both ends of the coil winding of the coil.

[0040] An improvement point of this embodiment lies in the coil wiring structure, which includes a coil wiring piece 100 connected between the coil wiring terminal and the coil winding. A coil winding conductive piece 101 is provided on the coil. The coil wiring terminal is connected to the coil winding conductive piece 101 through the coil wiring piece 100. The coil winding conductive piece 101 is installed on the coil bobbin 104 and is electrically connected to the coil winding. The coil wiring piece 100 is in plug-in fit with the coil winding conductive piece 101.

[0041] As Figure 2 shown, in this embodiment, the coil winding conductive piece 101 includes an integrally formed plug-in portion 1, a support portion 2, and an enameled wire winding portion 3. The plug-in portion 1 includes two clamping plates arranged oppositely. A clamping gap for clamping the conductor is formed between the two clamping plates, which is used for clamping connection with the coil wiring piece 100 so as to conduct the external control power supply to the coil winding conductive piece 101.

[0042] The support portion 2 is used for fixedly connecting with the coil bobbin 104. The support portion 2 includes a first support surface 21 and a second support surface 22 arranged oppositely to the first support surface 21. At least one limiting surface is connected between the first support surface 21 and the second support surface 22. The first support surface 21 and the second support surface 22 of the support portion 2 are respectively connected to the two clamping plates of the plug-in portion 1, playing a role in supporting the coil winding conductive piece 101.

[0043] The enameled wire winding portion 3 is in the shape of a long plate and is used for winding and welding the enameled wire onto the enameled wire winding portion 3. The enameled wire winding portion 3 is connected to the support portion 2. Among them, the extending direction of the enameled wire winding portion 3 is perpendicular to the direction in which the coil wiring piece 100 is inserted into the coil winding conductive piece 101, and the enameled wire winding portion 3 can be bent and rotated around its connection with the support portion 2.

[0044] In this embodiment, by setting the insertion part 1, the support part 2, and the enameled wire winding part 3 as an integrally formed structure, the stability of the conduction of the coil winding conductive sheet 101 is greatly improved. At the same time, the two clamping plates of the insertion part 1 of the coil winding conductive sheet 101 can be used to clamp the coil connection piece 100. By means of clamping, the stability and reliability of the electrical contact between the coil winding conductive sheet 101 and the coil connection piece 100 can be effectively improved. The first support surface 21 and the second support surface 22 of the support part 2 can fixedly connect the support part 2 to the coil skeleton 104. The limiting surface thereof can cooperate with the corresponding structural features on the coil skeleton 104 to achieve the limiting function. The enameled wire winding part 3 is connected to the support part 2 by means of bending and rotation, which is convenient for winding and welding the inlet end or the outlet end of the enameled wire. At the same time, after winding, the enameled wire winding part 3 can be rotated and bent inside the coil skeleton 104 to avoid the protruding enameled wire winding part 3 interfering with the assembly of the coil winding product body and affecting the production efficiency.

[0045] As Figure 2 , Figure 3 and Figure 4 shown, preferably, the two clamping plates of the insertion part 1 are of arc structure, and a clamping gap for clamping the conductor is formed between the two clamping plates, and the distance between the middle of the two plates is less than the distance between the two ends. When the coil connection piece 100 is cooperatively installed with the insertion part 1, the coil connection piece 100 will be clamped at the middle position of the two clamping plates and fixed on the coil winding conductive sheet 101. By setting the two clamping plates on the insertion part 1 as arc structures and the distance between the middle of the two clamping plates being less than the distance between the two ends, the two clamping plates can have a certain elasticity, which can not only achieve a more stable clamping effect but also facilitate clamping of connection conductors with different thicknesses.

[0046] Preferably, one end of the enameled wire winding part 3 can be set to be bendably and rotatably connected to the support part 2, and the other end is provided with a first convex structure as the enameled wire anti-dropping part 31 to prevent the enameled wire from dropping off during use. The first convex structure can be a single convex part or multiple convex parts, and all those that can achieve the corresponding effect belong to the protection scope of the present invention. By setting the connection mode between the enameled wire winding part 3 and the support part 2 as bendable and rotatable connection, the enameled wire winding part 3 can be rotated and bent inside the coil skeleton 104 after the enameled wire winding is completed, avoiding the protruding enameled wire winding part 3 interfering with the assembly of the coil winding product body and affecting the production efficiency.

[0047] Further, a solder joint portion 32 for the enameled wire is further provided on the enameled wire winding portion 3 for soldering the outgoing end or the incoming end of the enameled wire thereto. Wherein, the solder joint portion 32 for the enameled wire is formed by bending a protruding portion on the longitudinal side surface of the enameled wire winding portion 3, and one side surface of the bent protruding portion fits or is relatively spaced from the longitudinal side surface of the enameled wire winding portion 3. By providing the solder joint portion 32 for the enameled wire on the enameled wire winding portion, the structure is clear, the shape is beautiful, the soldering is convenient, the operation is facilitated, and the maintenance is convenient.

[0048] Further, the solder joint portion 32 for the enameled wire includes a bent portion 321 and a soldering surface 322 that fits or is relatively spaced from the longitudinal side surface. The bent portion 321 protrudes from the enameled wire winding portion 3 to form a second protruding structure. There is a certain interval between the second protruding structure and the first protruding structure, which can be used as an enameled wire winding area 33 for winding the enameled wire led out from the coil winding. The soldering surface 322 can be used to solder the outgoing end or the incoming end of the enameled wire thereto, preventing it from falling off during use and affecting the service life of the coil winding conductive sheet 101.

[0049] Preferably, the support portion 2 may include two limiting surfaces, namely a first limiting surface 23 and a second limiting surface 24. The first limiting surface 23 and the second limiting surface 24 are oppositely arranged and located between the first support surface 21 and the second support surface 22. The first limiting surface 23, the first support surface 21, the second limiting surface 24, and the second support surface 22 are connected in sequence to form a frame-shaped support portion 2 for supporting the coil winding conductive sheet 101. Wherein, the height of the first limiting surface 23 is less than the height of the second limiting surface 24. The upper side edges of the first limiting surface 23 and the second limiting surface 24 can cooperate with the corresponding structural features on the coil skeleton 104 to realize the limiting and locking of the coil winding conductive sheet 101 in the first direction, and at the same time play a role in preventing reverse installation.

[0050] Obviously, the number of the limiting surfaces of the support portion 2 can be designed according to actual conditions, and is not limited to this solution. At the same time, the heights of the first limiting surface 23 and the second limiting surface 24 can also be designed according to actual needs, as long as they cooperate with the corresponding structural features on the coil skeleton 104 to realize the limiting and locking functions, which are within the protection scope of the present invention.

[0051] Further, the first support surface 21 and the second support surface 22 are respectively the extended surfaces of one ends of the two clamping plates of the plugging portion 1. The directions in which the two clamping plates extend towards the first support surface 21 and the second support surface 22 can be used as the first direction, that is, as Figure 5As shown, the longitudinal direction after the coil winding conductive sheet 101 is installed on the coil bobbin 104 is also the direction in which the coil connection piece 100 is inserted into the coil winding conductive sheet 100; the second limiting surface 24 is connected between the first supporting surface 21 and the second supporting surface 22 along the second direction; a limiting portion 4 extending in the third direction is provided on the side edge of the first supporting surface 21, and the third direction is the transverse direction of the coil winding conductive sheet 101 after being installed on the coil bobbin 104 as shown in Figure 5 shown, the first direction, the second direction and the third direction are perpendicular to each other; the enameled wire winding portion 3 is connected to the side edge of the second supporting surface 22 and can be bent and rotated around the side edge of the second supporting surface 22.

[0052] Preferably, a limiting portion 4 is further provided on the same plane as the first supporting surface 21 of the supporting portion 2. The limiting portion 4 is an extended convex structure of the first supporting surface 21, and is cooperatively installed with a corresponding groove on the coil bobbin 104 to lock the coil winding conductive sheet 101 on the coil bobbin 104, so as to limit and fix the coil winding conductive sheet 101 in the second direction. Among them, the position and structure of the limiting portion 4 are not limited to this. In this embodiment, the limiting portion 4 is only provided on the first supporting surface 21, and the limiting portion 4 is two convex portions, which are respectively provided on both sides of the side plate. Obviously, the limiting portion 4 can also be provided on the first supporting surface 21 and the second supporting surface 22 at the same time according to needs, or only one convex portion is provided for the limiting portion 4, or the limiting portion 4 is a groove structure, which cooperates with the corresponding convex structure on the coil bobbin 104 to achieve the locking function. Whatever can be thought of by those skilled in the art according to the embodiments of the present application belongs to the protection scope of the present invention.

[0053] Figure 5 and Figure 6 show a schematic structural diagram of the coil winding conductive sheet 101 of the present application installed on the contactor coil bobbin 104, wherein, Figure 5 is a schematic structural diagram before the enameled wire winding portion 3 is bent around the second supporting surface 22, Figure 6 is a schematic structural diagram after the enameled wire winding portion 3 is bent around the second supporting surface 22. The coil winding conductive sheet 101 is installed on the coil bobbin 104, and the plugging portion 1 is cooperatively connected with the coil connection piece 100 to introduce an external control power supply into the coil winding conductive sheet 101. Among them, the coil bobbin 104 is made of an insulating material, which can form electrical isolation between the coil winding conductive sheet 101 and the contactor bracket.

[0054] The supporting part 2 fixedly supports the coil winding conductive sheet 101 in the card slot of the coil skeleton 104. The first limiting surface 23 and the second limiting surface 24 are abutted against the two side walls of the card slot of the coil skeleton 104 to achieve the limiting in the second direction. At the same time, the upper side edges of the first limiting surface 23 and the second limiting surface 24 can also be cooperatively pressed against the corresponding structural features on the coil skeleton 104 to achieve the limiting in the first direction. The limiting part 4 is cooperatively locked with the corresponding structural features in the coil skeleton 104, which can not only achieve the limiting in the third direction, but also prevent insecure fixation and falling off during use, or prevent inaccurate position correspondence when being inserted into the coil wiring piece 100. The enameled wire winding part 3 corresponding to the A1 end of the coil incoming line terminal is used for winding the enameled wire at the incoming line end of the coil winding. The enameled wire led out from the incoming line end of the coil winding is wound around the enameled wire winding area 31 of the enameled wire winding part 3, and then the incoming line end of the enameled wire is welded to the enameled wire welding part 32. The enameled wire winding part 3 corresponding to the A2 end of the coil outgoing line terminal is used for winding the enameled wire at the outgoing line end of the coil winding. The enameled wire led out from the outgoing line end of the coil winding is wound around the enameled wire winding area 31 of the enameled wire winding part 3, and then the outgoing line end of the enameled wire is welded to the enameled wire welding part 32.

[0055] As Figure 1 shown, in this application, a coil wiring piece 100 is respectively arranged on both sides of the coil skeleton 104. The enameled wire winding parts 3 of the two coil wiring pieces 100 are respectively connected to the incoming line end and the outgoing line end of the coil winding. The two coil connection terminals A1 and A2 are respectively arranged directly above the two coil wiring pieces 100.

[0056] Among them, the coil connection piece 100 includes a first connection piece 01 and a second connection piece 02 which are integrally formed. The second connection piece 02 is a planar sheet-like structure for connecting with the coil connection terminal. The first connection piece 01 is bent and connected to the second connection piece 02. The first connection piece 01 is inserted between two clamping plates of the coil winding conductive piece 101 and is clamped by it. The coil connection terminal includes a connection screw 102, a pressure piece 103 and the second connection piece 02 serving as a connection piece. A first hole is provided on the second connection piece 02. Among them, the connection screw 102 passes through the pressure piece 103 through the first hole and is connected to the second connection piece 02. The connection screw 102 is used to drive the pressure piece 103 to press the wire tightly on the second connection piece 02. The coil connection structure of the contactor in this application has a simple structure and is easy to implement in technology. The clamping feature of the insertion part 1 of the coil winding conductive piece 101 can make the connection between the coil winding conductive piece 101 and the external electricity firm and reliable. The enameled wire winding part 3 can wind and weld the incoming wire end and the outgoing wire end of the coil winding on the enameled wire winding part 3. At the same time, the bendable structural design of the enameled wire winding part 3 can bend the wound and welded enameled wire winding part 3 towards the inside of the contactor, avoiding the interference of the protruding enameled wire winding part 3 on the assembly of the coil winding product body and affecting the production efficiency.

[0057] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when in use and usually placed. It is only for the convenience of description and does not indicate that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0058] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or replacements can still be made, which should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. A coil connection structure of a contactor, characterized in that: The invention comprises a coil connection piece (100) connected between a coil connection terminal and a coil winding, the coil comprising a coil frame (104) and a coil winding wound on the coil frame (104), a coil winding conductive piece (101) fixed on the coil frame (104) and electrically connected to the coil winding, the coil connection piece (100) and the coil winding conductive piece (101) are plug-fitted and matched, and the coil winding conductive piece (101) comprises an integrally formed plug-in portion (1), a support portion (2) and an enameled wire winding portion (3), The plug-in portion (1) comprises two clamping plates arranged opposite to each other, with a clamping gap for clamping the conductor formed between the two clamping plates, and used for clamping and connecting with the coil connecting piece (100); The support portion (2) is used for being fixedly connected to the coil skeleton (104), the support portion (2) comprising a first support surface (21) and a second support surface (22) arranged opposite to the first support surface (21), at least one limiting surface being connected between the first support surface (21) and the second support surface (22), and the first support surface (21) and the second support surface (22) of the support portion (2) are respectively connected to two clamping plates of the plug-in portion (1); The enameled wire winding portion (3) is a long plate-shaped structure, and the enameled wire winding portion (3) is connected to the support portion (2), wherein the extension direction of the enameled wire winding portion (3) is perpendicular to the direction in which the coil connecting piece (100) is inserted into the coil winding conductive piece (101), and the enameled wire winding portion (3) can be bent and rotated around the connection between it and the support portion (2).

2. The coil connection structure of the contactor according to claim 1, characterized in that: The two clamping plates are of arc structure, and the distance between the two clamping plates is smaller than the distance between the two ends.

3. The coil connection structure of the contactor according to claim 1, characterized in that: One end of the enameled wire winding portion (3) can be bent and rotatably connected to the support portion (2), and the other end is provided with a first protruding structure serving as an enameled wire anti-falling portion (31).

4. The coil connection structure of the contactor according to claim 3, characterized in that: The enameled wire winding portion (3) is also provided with an enameled wire welding portion (32), wherein the enameled wire welding portion (32) is formed by a protruding portion on the longitudinal side of the enameled wire winding portion (3) through a bending operation, and one side of the bent protruding portion is in contact with or relatively spaced from the longitudinal side of the enameled wire winding portion (3).

5. The coil connection structure of the contactor according to claim 4, characterized in that: The enameled wire welding portion (32) comprises a bending portion (321) and a welding surface (322) that is in contact with or spaced apart from the longitudinal side surface; the bending portion (321) protrudes from the enameled wire winding portion (3) to form a second protruding structure; and the space between the second protruding structure and the first protruding structure serves as an enameled wire winding area (33).

6. The coil connection structure of the contactor according to claim 1, characterized in that: The support portion (2) comprises two limiting surfaces, the two limiting surfaces being respectively a first limiting surface (23) and a second limiting surface (24); the first limiting surface (23) and the second limiting surface (24) are arranged opposite to each other and are located between the first supporting surface (21) and the second supporting surface (22), thereby forming a support portion (2) of a frame-type structure.

7. The coil connection structure of the contactor according to claim 6, characterized in that: The height of the first limiting surface (23) is smaller than the height of the second limiting surface (24).

8. The coil connection structure of the contactor according to claim 6, characterized in that: The first supporting surface (21) and the second supporting surface (22) are respectively extended surfaces of one end of two clamping plates of the plug-in portion (1); the direction in which the two clamping plates extend toward the first supporting surface (21) and the second supporting surface (22) is a first direction, which is also the direction in which the coil connecting piece (100) is inserted into the coil winding conductive piece (101); The second limiting surface (24) is connected between the first supporting surface (21) and the second supporting surface (22) along a second direction; The side protrusion of the first supporting surface (21) is provided with a limiting portion (4) extending in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The enameled wire winding portion (3) is connected to the side edge of the second supporting surface (22) and can be bent and rotated around the side edge of the second supporting surface (22).

9. The coil connection structure of the contactor according to claim 1, characterized in that: The support portion (2) is provided with a raised limiting portion (4) for limiting the position of the coil frame (104).

10. The coil connection structure of the contactor according to claim 1, characterized in that: Two coil connection pieces (100) are provided on the coil frame (104); the enameled wire winding parts (3) of the two coil connection pieces (100) are respectively connected to the two ends of the coil winding; and the two coil connection terminals are respectively arranged directly above the two coil connection pieces (100); the coil connection piece (100) comprises a first connecting piece (01) and a second connecting piece (02) which are integrally formed; the second connecting piece (02) is a flat sheet structure and is used to connect to the coil connection terminals; the first connecting piece (01) and the second connecting piece (02) are bent and connected; the first connecting piece (01) is inserted between two clamping plates of the coil winding conductive piece (101); The coil terminal comprises a connection screw (102), a wire pressing piece (103) and a second connecting piece (02) serving as a connection piece, wherein the second connecting piece (02) is provided with a first hole, wherein the connection screw (102) passes through the wire pressing piece (103) and is connected to the second connecting piece (02), and the connection screw (102) is used to drive the wire pressing piece (103) to press the wire tightly onto the second connecting piece (02).

Images