Coil structure and coil wiring structure of contactor

Abstract

The coil structure comprises a conducting strip installation groove used for installing a coil winding conducting strip, the conducting strip installation groove comprises a first containing cavity and a second containing cavity which are integrally formed, the first containing cavity is of a groove structure extending in the first direction, and the second containing cavity is of a groove structure extending in the second direction. The first containing cavity is of a groove structure extending in the first direction, the inserting part and the supporting part are used for installing a coil winding conducting strip, a first opening is formed in the top of the first direction, the second containing cavity is of a groove structure extending in the second direction and used for installing an enameled wire winding part of the coil winding conducting strip, a second opening is formed in the third direction, and the first containing cavity is connected with the second containing cavity; the axial direction of the coil framework supporting shaft is the first direction, and the first direction, the second direction and the third direction are perpendicular to one another. The conducting strip mounting grooves in the contactor coil structure and the coil wiring structure have the advantages of being firm in mounting effect with the coil winding conducting strips and good in electrical isolation effect.

Description

Technical Field

[0001] The utility model relates to the field of electronic power equipment, and particularly relates to a coil 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 structure of a contactor is the main structure for accommodating the coil winding, which mainly includes a coil skeleton and a coil winding wound around the coil skeleton. In the prior art, a conductive piece mounting groove cooperatively connected with the coil winding conductive piece is usually installed on the coil skeleton. The coil winding conductive piece and the conductive piece mounting groove are key components of the coil, which are placed at the inlet and outlet ends of the coil and are used to connect the coil wiring terminal and the coil winding to conduct the external control power supply and the coil winding. The existing conductive piece mounting groove and the coil winding conductive piece are not convenient for connecting the coil winding and the coil winding conductive piece. Moreover, during the manufacturing process of the coil winding, the conductive piece mounting groove and the coil winding conductive piece rotate rapidly with the motor. This requires the coil conductive piece to be firmly installed in the conductive piece mounting groove to avoid problems such as the coil conductive piece coming off or loosening during the manufacturing process or use of the coil. With the development of the electronics industry, there are more and more types of coil winding conductive pieces, and the structures of the conductive piece mounting grooves cooperatively installed therewith are becoming more and more diverse. However, in the prior art, the conductive piece mounting groove has problems such as poor mounting effect with the coil winding conductive piece and poor electrical isolation effect. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome at least one technical defect in the prior art and provide a coil structure of a contactor.

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

[0006] In a first aspect, the present application proposes a coil structure of a contactor, including a coil skeleton, the coil skeleton includes a coil skeleton top plate, a coil skeleton bottom plate, and a coil skeleton support shaft vertically arranged with respect to the coil skeleton top plate, a coil winding is wound around the coil skeleton, and a conductive piece mounting groove for installing a coil winding conductive piece is provided on the coil skeleton top plate.

[0007] The conductive piece mounting groove includes a first accommodating cavity and a second accommodating cavity formed integrally.

[0008] The first receiving cavity is a groove structure extending in the first direction, and is used for installing the plugging part and the supporting part of the coil winding conductive sheet, and a first opening is provided at the top in the first direction. The second receiving cavity is a groove structure extending in the second direction, and is used for installing the enameled wire winding part of the coil winding conductive sheet, and a second opening is provided in the third direction. The first receiving cavity is connected to the second receiving cavity. The axial direction of the coil skeleton support shaft is the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] Wherein, a limiting part is arranged in the first receiving cavity to limit the coil winding conductive sheet. The limiting part is at least one boss structure and / or at least one groove structure.

[0010] An arc-shaped corner is also provided at the connection position of the first receiving cavity and the second receiving cavity, so as to make the bending position of the enameled wire winding part have a radian.

[0011] By respectively arranging the first receiving cavity and the second receiving cavity in the first direction and the second direction of the conductive sheet installation groove, the longitudinal structure and the transverse structure of the coil winding conductive sheet can be correspondingly installed. The structure is clearly distinguished, easy to produce and operate, and firmly installed. At the same time, the limiting part arranged in the first receiving cavity can cooperate with the corresponding structural features of the coil winding conductive sheet to realize the limiting and locking functions. An arc-shaped corner is also provided at the connection position of the first receiving cavity and the second receiving cavity, which can be used to make the bending position of the enameled wire winding part have a radian, avoid damaging the enameled wire winding part of the coil winding conductive sheet after multiple bends, and extend the service life of the coil winding conductive sheet.

[0012] In a possible implementation manner, the first receiving cavity is provided with a third opening in the third direction for installing the coil winding conductive sheet. The limiting part includes a first limiting part, and the first limiting part is a boss structure, including a first protruding part and a second protruding part, and the first protruding part and the second protruding part extend along the third direction.

[0013] By arranging the first protruding part and the second protruding part in the first receiving cavity, they can cooperate with two opposite side surfaces of the coil winding conductive sheet to realize the locking and limiting of the coil winding conductive sheet in the first direction.

[0014] In a possible implementation manner, the height of the second protruding part is higher than that of the first protruding part, and the first protruding part and the second protruding part are respectively arranged on two side walls of the first receiving cavity that are relatively spaced in the second direction.

[0015] By respectively arranging the first protruding part and the second protruding part on two opposite side walls of the first receiving cavity, and setting the height of the second protruding part to be higher than that of the first protruding part, the incorrect installation of the coil winding conductive sheet can be avoided by the different height settings.

[0016] In a possible implementation manner, the limiting part includes a second limiting part, and the second limiting part is a first groove with an opening on the inner side of the first accommodating cavity. The first groove is arranged along a first direction and has a groove opening in the first direction.

[0017] By arranging the second limiting part with the structure of the first groove in the first accommodating cavity, the first groove can cooperate with the conductive sheet limiting part on the conductive sheet of the coil winding to realize the limiting and locking of the conductive sheet of the coil winding in a third direction.

[0018] In a possible implementation manner, the second limiting part further includes a second groove adjacent to the first groove. The width of the second groove is greater than the width of the first groove, and the depth of the second groove is less than the depth of the first groove.

[0019] By arranging the second groove, it is easier and more labor-saving to install the conductive sheet of the coil winding into the conductive sheet installation groove.

[0020] In a possible implementation manner, the height of the first accommodating cavity is higher than the sum of the heights of the supporting part and the inserting part of the conductive sheet of the coil winding; the depth of the second accommodating cavity is greater than the maximum thickness of the enameled wire winding part.

[0021] By setting the height of the first accommodating cavity to be higher than the sum of the heights of the supporting part and the inserting part of the conductive sheet of the coil winding, and setting the depth of the second accommodating cavity to be greater than the maximum thickness of the enameled wire winding part, the enameled wire winding part of the conductive sheet of the coil winding can be semi-wrapped therein. In practical applications, the second accommodating cavity can play a protective role for the enameled wire winding part to prevent misoperation, damage the enameled wire winding part, and cause unnecessary economic losses.

[0022] In a possible implementation manner, two conductive sheet installation grooves are provided on both sides of the top plate of the coil skeleton, and are respectively connected to the enameled wire inlet end and the enameled wire outlet end of the coil winding. The two conductive sheet installation grooves are symmetrically arranged, and the second accommodating cavities of the two conductive sheet installation grooves are close to the enameled wire inlet end guiding groove.

[0023] By arranging the two conductive sheet installation grooves on both sides of the top plate of the coil skeleton and corresponding to the coil wiring terminals one by one, it is convenient for the coil wiring piece to be correspondingly connected to the conductive sheet of the coil winding. At the same time, the two conductive sheet installation grooves are symmetrically arranged, and the second accommodating cavities of the two conductive sheet installation grooves are close to the enameled wire inlet end guiding groove, which is convenient for the enameled wire inlet end and the enameled wire outlet end to be wound and welded to the enameled wire winding part of the conductive sheet of the coil winding.

[0024] In a possible implementation manner, the coil winding conductive sheet includes an integrally formed insertion part, a support part, and an enameled wire winding part. The insertion part includes two clamping plates arranged opposite to each other, and a clamping gap for clamping a conductor is formed between the two clamping plates for clamping connection with a coil connection piece.

[0025] The support part is used for fixedly connecting with a coil skeleton. The support part includes a first support surface and a second support surface arranged opposite 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 part are respectively connected with the two clamping plates of the insertion part.

[0026] The enameled wire winding part is in a long plate-like structure and 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 sheet, and the enameled wire winding part can be bent and rotated around its connection with the support part.

[0027] In a second aspect, the present application proposes a coil connection structure of a contactor, including the coil structure of the above contactor and a coil winding conductive sheet arranged in a conductive sheet installation groove of the coil structure. The coil winding conductive sheet is electrically connected to the coil winding, and the coil connection terminal is inserted and connected to the coil winding conductive sheet through a coil connection piece.

[0028] In a possible implementation manner, the coil connection piece includes an integrally formed first connection piece and a second connection piece, and the first connection piece and the second connection piece are perpendicularly connected; 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, and the connection screw passes through the pressing piece through the first hole to be connected to the second connection piece. The connection screw is used to drive the pressing piece to press the wire tightly on the second connection piece, and the first connection piece is inserted into the coil winding conductive sheet. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of an embodiment of the contactor of the present utility model;

[0030] Figure 2 is a schematic structural diagram of an embodiment of the coil skeleton of the present utility model;

[0031] Figure 3 is a schematic structural diagram of an embodiment of the coil connection piece of the present utility model;

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

[0033] Figure 5 、 Figure 6 is a schematic structural diagram of an embodiment of the conductive sheet installation groove of the present utility model;

[0034] Figure 7 It is a schematic structural diagram before the enameled wire winding part in the embodiment of the coil winding conductive sheet of the present utility model is bent along the connection part between it and the support part;

[0035] Figure 8 It is a schematic structural diagram after the enameled wire winding part in the embodiment of the coil winding conductive sheet of the present utility model is bent along the connection part between it and the support part;

[0036] In the figure, coil incoming line terminal A1; coil outgoing line terminal A2; coil skeleton top plate 107; coil skeleton support shaft 108; coil skeleton bottom plate 109; conductive sheet installation groove 102; coil winding conductive sheet 101; coil connection piece 100; first connection piece 01; second connection piece 02; insertion part 103; support part 104; enameled wire winding part 105; first support surface 21; second support surface 22; first accommodation cavity 1; second accommodation cavity 2; first limiting part 11; first protruding part 111; second protruding part 112; second limiting part 12; first groove 121; conductive sheet limiting part 23; second groove 122; first side wall 13; second side wall 14; corner 3; enameled wire incoming line end lead groove 106. Specific embodiments

[0037] The following embodiments given in conjunction with the drawings further illustrate the specific embodiments of the present utility model. The protection scope of the present utility model is not limited to the description of the following embodiments.

[0038] 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 incoming line end and the outgoing line 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.

[0039] 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.

[0040] Figure 1The structural schematic diagram of the contactor of the present application is shown. In this embodiment, the coil of the electromagnetic system is arranged in the lower layer structure of the contactor, and two coil terminal blocks are arranged at both ends of the upper layer structure of the contactor. The two coil terminal blocks are respectively the coil incoming line terminal A1 and the coil outgoing line terminal A2, and the two coil terminal blocks are respectively electrically connected to both ends of the coil winding of the coil.

[0041] The coil of the electromagnetic system includes a coil bobbin and a coil winding. As Figure 2 shown, it is the structural schematic diagram of the coil bobbin of the present application. The coil winding is wound around the coil bobbin. The coil bobbin includes a coil bobbin top plate 107, a coil bobbin support shaft 108, and a coil bobbin bottom plate 109. The coil winding is wound around the coil bobbin support shaft 108 of the coil bobbin. The coil bobbin top plate 107 and the coil bobbin bottom plate 109 are arranged in parallel and are respectively vertically installed at both ends of the coil bobbin support shaft 108, that is, the coil bobbin support shaft 108 is located between the coil bobbin top plate 107 and the coil bobbin bottom plate 109. The axial direction of the coil bobbin support shaft 108 is the first direction. Conductive sheet mounting grooves 102 are respectively arranged on both sides of the coil bobbin top plate 107. The conductive sheet mounting grooves 102 are used to mount the coil winding conductive sheets 101. The two coil winding conductive sheets 101 are respectively electrically connected to both ends of the coil winding. The coil incoming line terminal A1 and the coil outgoing line terminal A2 are respectively electrically connected to the two coil winding conductive sheets 101 through coil connection pieces 100.

[0042] In this embodiment, the coil incoming line terminal A1 and the coil outgoing line terminal A2 are located directly above the two conductive sheet mounting grooves 102, and the coil connection piece 100 is electrically connected to the coil winding conductive sheet 101 in the conductive sheet mounting groove 102 by means of insertion.

[0043] Figure 3 The structural schematic diagram of the coil connection piece 100 in the embodiment of the present application is shown. The coil connection piece 100 includes a first connection piece 01 and a second connection piece 02 which are integrally formed. The first connection piece 01 and the second connection piece 02 are perpendicularly connected. Figure 4 The structural schematic diagram of the coil winding conductive sheet 101 in the embodiment of the present application is shown. As Figure 4 shown, the coil winding conductive sheet 101 includes an integrally formed insertion part 103, a support part 104, and an enameled wire winding part 105. Among them, the insertion part 103 includes two clamping plates arranged oppositely. A clamping gap for clamping a conductor is formed between the two clamping plates, and it is used for clamping connection with the coil connection piece 100.

[0044] The supporting part 104 is used for fixedly connecting with the conductive sheet mounting groove 102. The supporting part 104 includes a first supporting surface 21 and a second supporting surface 22 arranged opposite to the first supporting surface 21. At least one limiting surface is connected between the first supporting surface 21 and the second supporting surface 22. The first supporting surface 21 and the second supporting surface 22 of the supporting part 104 are respectively connected with two clamping plates of the inserting part 103.

[0045] The enameled wire winding part 105 is of a long plate-like structure. The enameled wire winding part 105 is connected with the supporting part 104. Wherein, the extending direction of the enameled wire winding part 105 is perpendicular to the direction in which the coil connection piece 100 is inserted into the coil winding conductive sheet 101, and the enameled wire winding part 105 can be bent and rotated around its connection part with the supporting part 104.

[0046] The coil connection terminal includes a connection screw, a pressing piece and a second connection piece 02 serving as a connection piece. A first hole is provided on the second connection piece 02. The connection screw passes through the pressing piece through the first hole and is connected with the second connection piece 02. The connection screw is used to drive the pressing piece to press the wire tightly on the second connection piece 02, so that the coil connection piece 100 is electrically connected with an external control power supply through the second connection piece 02. The first connection piece 01 is electrically connected with the inserting part 103 of the coil winding conductive sheet 101 in a plugging manner in the first direction.

[0047] An improvement point of this embodiment lies in the coil structure of the contactor, including conductive sheet mounting grooves 102 installed on both sides of the coil skeleton top plate 107. The conductive sheet mounting grooves 102 are used for installing the coil winding conductive sheets 101 to conduct insulation protection and protection for the coil winding conductive sheets 101.

[0048] Figure 5 and Figure 6 shows a schematic structural diagram of the conductive sheet mounting groove 102. As shown in Figure 5 and Figure 6 shown, in this embodiment, the conductive sheet mounting groove 102 includes an integrally formed first accommodating cavity 1 and a second accommodating cavity 2. The first accommodating cavity 1 is a groove structure extending in the first direction, and is used for installing the inserting part 103 and the supporting part 104 of the coil winding conductive sheet 101. And a first opening is provided at the top in the first direction for the insertion of the coil connection piece 100 and the installation of the coil winding conductive sheet 101. The second accommodating cavity 2 is a groove structure extending in a second direction perpendicular to the first direction, and is used for installing the enameled wire winding part 105 of the coil winding conductive sheet 101. And a second opening is provided in the third direction for the installation of the enameled wire winding part 105. The first direction, the second direction and the third direction are perpendicular to each other. The first accommodating cavity 1 is connected with the second accommodating cavity 2. Wherein, the first direction is the axial direction of the coil skeleton support shaft 108.

[0049] As Figure 5 and Figure 6 shown, a limiting portion is provided in the first accommodating cavity 1. The limiting portion can be at least one boss structure; it can also be at least one groove structure; or it can also be the side wall of the cavity of the first accommodating cavity 1; or it can also be a combination of the above multiple ways, as long as it can cooperate with the corresponding structural features of the coil winding conductive sheet 101 to achieve the functions of limiting and locking.

[0050] The conductive sheet mounting groove 102 is made of an insulating material, which is used to achieve electrical isolation between the coil winding conductive sheet 101 and each component on the contactor skeleton. Among them, the insulating material includes but is not limited to plastic materials. For example, it can also be a gel material. By respectively arranging the first accommodating cavity 1 and the second accommodating cavity 2 in the first direction and the second direction of the conductive sheet mounting groove 102, the longitudinal structure and the transverse structure of the coil winding conductive sheet 101 can be correspondingly installed. The structure is clearly distinguished and easy to produce and operate. At the same time, setting a limiting portion in the first accommodating cavity 1 can cooperate with the corresponding structural features of the coil winding conductive sheet 101 to achieve the functions of limiting and locking.

[0051] As Figure 5 shown, in a possible implementation manner, the first accommodating cavity 1 is provided with a third opening in the third direction for installing the coil winding conductive sheet 101. A first limiting portion 11 is provided in the first accommodating cavity 1. The first limiting portion 11 is a boss structure, including a first protruding portion 111 and a second protruding portion 112. The length directions of the first protruding portion 111 and the second protruding portion 112 extend along the third direction. The coil winding conductive sheet 101 is inserted into the first accommodating cavity 1 from the third opening. Preferably, the height of the second protruding portion 112 is higher than the height of the first protruding portion 111. The first protruding portion 111 and the second protruding portion 112 are respectively arranged on two side walls of the first accommodating cavity 1 that are relatively spaced apart in the second direction. The first protruding portion 111, the second protruding portion 112 and the bottom surface of the conductive sheet mounting groove 102 respectively cooperate with the structural features of two side surfaces corresponding to the coil winding conductive sheet 101 and the bottom edge of the coil winding conductive sheet 101 to achieve longitudinal limiting and locking, and avoid the coil winding conductive sheet 101 from being installed reversely by different height settings. Among them, the first limiting portion 11 can also be a non-boss structure. For example, it can also be a groove structure, as long as it can cooperate with the corresponding structural features of the coil winding conductive sheet 101 to achieve the functions of limiting and locking, which is the protection scope of this application.

[0052] As Figure 6As shown, in a possible implementation, a second limiting portion 12 is provided in the first accommodating cavity 1. The second limiting portion 12 is a first groove 121 provided on the inner side of the first accommodating cavity 1. The first groove 121 is arranged along the first direction and has a groove opening in the first direction. The first groove 121 cooperates with the conductive sheet limiting portion 23 on the coil winding conductive sheet 101 to realize the limiting and locking of the coil winding conductive sheet 101 in the third direction. The coil winding conductive sheet 101 is inserted into the first accommodating cavity 1 from the first opening, and the protruding structure on the coil winding conductive sheet 101 slides into the first groove 121. At this time, the first accommodating cavity 1 may not be provided with a third opening either.

[0053] In a possible implementation, the second limiting portion 12 in the first accommodating cavity 1 further includes a second groove 122 adjacent to the first groove 121. Among them, the width of the second groove 122 is greater than the width of the first groove 121, and the depth of the second groove 122 is less than the depth of the first groove 121. The advantage of this design is that when installing the coil winding conductive sheet 101, it is easier and more labor-saving to install the coil winding conductive sheet 101 into the conductive sheet installation groove 102.

[0054] In a possible implementation, the two side walls in the first accommodating cavity 1, that is, the first side wall 13 and the second side wall 14, respectively abut against the two side surfaces of the coil winding conductive sheet 101 to realize the lateral limiting and locking.

[0055] In a possible implementation, the first accommodating cavity 1 includes the above-mentioned first limiting portion 11, second limiting portion 12, and the first side wall 13 and the second side wall 14 that abut against the two side surfaces of the coil winding conductive sheet 101, so as to jointly realize the longitudinal, lateral, and front-back direction limiting and locking of the coil winding conductive sheet 101 and prevent it from falling off during use.

[0056] As Figures 7-8 shown, the enameled wire winding portion 105 of the coil winding conductive sheet 101 is arranged along the third direction before being connected to the coil winding. After the enameled wire of the coil winding is wound and welded on the enameled wire winding portion 105, the enameled wire winding portion 105 is bent and rotated around the first direction and turns into the second accommodating cavity 2.

[0057] Particularly, as Figure 5 and Figure 6As shown, at the connection position of the first accommodation cavity 1 and the second accommodation cavity 2 of the conductive sheet installation groove 102, there is also a corner 3 with an arc structure. After the coil winding conductive sheet 101 is installed in the conductive sheet installation groove 102, the enameled wire winding part 105 of the coil winding conductive sheet 101 can be bent towards the inner side of the second accommodation cavity 2 along the corner 3, which is beneficial to form a certain arc at the bending position of the enameled wire winding part 105, avoiding damage to the enameled wire winding part 105 of the coil winding conductive sheet 101 after multiple bends and extending the service life of the coil winding conductive sheet 101.

[0058] In a possible implementation manner, the first accommodation cavity 1 and the second accommodation cavity 2 are communicated, and at the communication position, there is a convex rib with an arc structure as the corner 3. In a possible implementation manner, the first accommodation cavity 1 and the second accommodation cavity 2 are not communicated, and the partition board at the connection of the first accommodation cavity 1 and the second accommodation cavity 2 has an arc structure as the corner 3.

[0059] In a possible implementation manner, the height of the first accommodation cavity 1 is higher than the sum of the heights of the support part 104 and the insertion part 103 of the coil winding conductive sheet 101. The beneficial point of this design is that in practical applications, the first accommodation cavity 1 can protect the coil winding conductive sheet 101, preventing damage to the coil winding conductive sheet 101 due to misoperation and causing unnecessary economic losses.

[0060] In a possible implementation manner, the depth of the second accommodation cavity 2 is greater than the maximum thickness of the enameled wire winding part 105. When the enameled wire winding part 105 is bent in the second accommodation cavity 2, the second accommodation cavity 2 can semi-wrap the enameled wire winding part 105 therein. In practical applications, the second accommodation cavity 2 can protect the enameled wire winding part 105, preventing misoperation and damage to the enameled wire winding part 105 and causing unnecessary economic losses.

[0061] Figure 2 The structure diagram of the conductive sheet installation groove 102 of the embodiment of the present application installed on the coil skeleton is shown. As Figure 2 shown, on both sides of the top plate 107 of the coil skeleton, there are two conductive sheet installation grooves 102, which are respectively connected to the enameled wire inlet end and the enameled wire outlet end of the coil winding. The two conductive sheet installation grooves 102 are symmetrically arranged. The second accommodation cavity 2 of the two conductive sheet installation grooves 102 is close to the enameled wire inlet end lead groove 106. The enameled wire inlet end is wound around the enameled wire winding part 105 of a coil winding conductive sheet 101, introduced into the coil skeleton support shaft 108 from the enameled wire inlet end lead groove 106, and the enameled wire outlet end is directly led out and wound around the enameled wire winding part 105 of another coil winding conductive sheet 101.

[0062] Figure 7 and Figure 8The structural schematic diagram of the coil winding conductive sheet 101 of the present application installed in the conductive sheet installation groove 102 is shown, where Figure 7 It is the structural schematic diagram before the enameled wire winding part 105 is bent along the corner 3 of the conductive sheet installation groove 102. Figure 8 It is the structural schematic diagram after the enameled wire winding part 105 is bent along the corner 3. Install the coil winding conductive sheet 101 in the conductive sheet installation groove 102. The structural features of the support part 104 and the insertion part 103 of the coil winding conductive sheet 101 are matched with the corresponding structural features in the first accommodation cavity 1 of the conductive sheet installation groove 102 to achieve the functions of limiting and locking, and prevent falling off during use.

[0063] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by terms such as "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 in which it is usually placed during use. 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 invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0064] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A coil structure of a contactor, comprising a coil frame, wherein the coil frame comprises a coil frame top plate (107), a coil frame bottom plate (109) and a coil frame support shaft (108) arranged perpendicular to the coil frame top plate (107), the coil winding is wound on the coil frame, and the coil frame top plate (107) is provided with a conductive sheet mounting groove (102) for mounting a coil winding conductive sheet (101), characterized in that: The conductive sheet installation groove (102) comprises an integrally formed first accommodating cavity (1) and a second accommodating cavity (2); the first accommodating cavity (1) is a groove structure extending in a first direction, used for installing a plug-in portion (103) and a supporting portion (104) of the coil winding conductive sheet (101), and having a first opening at the top in the first direction; the second accommodating cavity (2) is a groove structure extending in a second direction, used for installing an enameled wire winding portion (105) of the coil winding conductive sheet (101), and having a second opening in a third direction; the first accommodating cavity (1) is connected to the second accommodating cavity (2); the axial direction of the coil skeleton support shaft (108) is the first direction, and the first direction, the second direction and the third direction are perpendicular to each other; A limiting portion is provided in the first accommodating cavity (1) to limit the position of the coil winding conductive sheet (101), and the limiting portion is at least one boss structure and / or at least one groove structure. A corner (3) with an arc structure is also provided at the connection position between the first accommodating cavity (1) and the second accommodating cavity (2), so as to generate an arc at the bending position of the enameled wire winding portion (105).

2. The coil structure of the contactor according to claim 1, characterized in that: The first accommodating cavity (1) is provided with a third opening in a third direction for installing a coil winding conductive sheet (101); the limiting portion comprises a first limiting portion (11); the first limiting portion (11) is a boss structure, comprising a first protruding portion (111) and a second protruding portion (112); the first protruding portion (111) and the second protruding portion (112) extend along the third direction.

3. The coil structure of the contactor according to claim 2, characterized in that: The height of the second protrusion (112) is higher than that of the first protrusion (111), and the first protrusion (111) and the second protrusion (112) are respectively arranged on two side walls of the first accommodating cavity (1) that are relatively spaced in the second direction.

4. The coil structure of the contactor according to claim 1, characterized in that: The limiting portion comprises a second limiting portion (12), the second limiting portion (12) being a first groove (121) opening inside the first accommodating cavity (1), the first groove (121) being arranged along a first direction and having a groove opening in the first direction.

5. The coil structure of the contactor according to claim 4, characterized in that: The second limiting portion (12) further comprises a second groove (122) adjacent to the first groove (121), the width of the second groove (122) being greater than the width of the first groove (121), and the depth of the second groove (122) being less than the depth of the first groove (121).

6. The coil structure of the contactor according to claim 1, characterized in that: The height of the first accommodating cavity (1) is higher than the sum of the heights of the supporting portion (104) and the plug-in portion (103) of the coil winding conductive sheet (101); and the depth of the second accommodating cavity (2) is greater than the maximum thickness of the enameled wire winding portion (105).

7. The coil structure of the contactor according to claim 1, characterized in that: Two conductive sheet installation grooves (102) are provided on both sides of the coil frame top plate (107), respectively connected to the enameled wire inlet end and the enameled wire outlet end of the coil winding, the two conductive sheet installation grooves (102) are symmetrically arranged, and the second accommodating cavities (2) of the two conductive sheet installation grooves (102) are close to the enameled wire inlet end guide groove (106).

8. The coil structure of the contactor according to claim 1, characterized in that: The coil winding conductive sheet (101) comprises an integrally formed plug-in portion (103), a support portion (104) and an enameled wire winding portion (105); The plug-in portion (103) comprises two clamping plates arranged opposite to each other, with a clamping gap for clamping the conductor formed between the two clamping plates, and is used for clamping and connecting with the coil connecting piece (100); The support portion (104) is used for being fixedly connected to the coil skeleton, the support portion (104) comprises a first support surface (21) and a second support surface (22) arranged opposite 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), and the first support surface (21) and the second support surface (22) of the support portion (104) are respectively connected to two clamping plates of the plug-in portion (103); The enameled wire winding portion (105) is a long plate-shaped structure, and the enameled wire winding portion (105) is connected to the support portion (104), wherein the extension direction of the enameled wire winding portion (105) 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 (105) can be bent and rotated around the connection between it and the support portion (104).

9. A coil connection structure of a contactor, characterized in that: It comprises a coil structure of a contactor as claimed in any one of claims 1 to 8 and a coil winding conductive sheet (101) arranged in a conductive sheet mounting groove (102) of the coil structure, the coil winding conductive sheet (101) being electrically connected to the coil winding, and the coil terminal being plug-connected to the coil winding conductive sheet (101) via a coil terminal sheet (100).

10. The coil connection structure of the contactor according to claim 9, characterized in that: The coil connecting piece (100) comprises an integrally formed first connecting piece (01) and a second connecting piece (02), wherein the first connecting piece (01) and the second connecting piece (02) are vertically connected; the coil connecting terminal comprises a connecting screw, a wire pressing piece and a second connecting piece (02) serving as a connecting piece, wherein a first hole is provided on the second connecting piece (02), and the connecting screw passes through the wire pressing piece through the first hole and is connected to the second connecting piece (02), wherein the connecting screw is used to drive the wire pressing piece to press the wire tightly onto the second connecting piece (02), and the first connecting piece (01) is plugged into the coil winding conductive piece (101).

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