Coil framework of alternating current contactor

Abstract

The utility model discloses a coil framework of an alternating current contactor, which comprises a coil framework, the coil framework is provided with a winding area, one side of the coil framework is provided with a fixing part, the fixing part is provided with at least two blind holes, and conductive parts are arranged in the blind holes. One side of the conductive part extends to be provided with a welding part, the bottom of the conductive part is provided with a leading-out pin which penetrates through the fixing part, the leading-out pin is located on the back face of the winding area, the two sides of the end face of the coil framework are provided with a wire inlet groove and a wire outlet groove respectively, and the wire inlet groove and the wire outlet groove are provided with a first through hole and a second through hole respectively. The lead-out pins are arranged on the back surface of the winding area, so that soldering flux is prevented from splashing to the surface of the coil, the coil is prevented from being damaged, the conductive part can be directly connected with a wire and a wiring nose through the threaded hole and can also be welded and fixed with the wire through the welding part, and the product has the advantages of preventing the coil from being damaged and providing various wiring modes.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a coil skeleton of an AC contactor. Background Art

[0002] The electromagnetic system in the AC contactor consists of a moving iron core, a static iron core and a coil assembly. The coil assembly includes a frame and a coil wound on the frame. The coil assembly is sleeved on the static iron core, and the moving iron core is connected and fixed to the contact bracket. When the coil is energized, it can generate a magnetic field. The generated magnetic field causes the static iron core set on the top of the frame to generate electromagnetic attraction, attracting the moving iron core to move toward the static iron core.

[0003] After the coil is wound around the bobbin, the two ends of the coil are welded to the lead pins on the bobbin. During the welding process, flux is needed to accelerate the adhesion of solder to the lead pins and the connected coil. The flux will splash onto the surface of the coil due to the high temperature, burning the insulation layer on the surface of the coil, causing the coil to be damaged, short-circuited, and unable to be used normally. Therefore, the applicant has made a useful design and found a solution to the above-mentioned problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional AC contactor design and provide a product that prevents coil damage and provides multiple wiring methods.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A coil bobbin of an AC contactor includes a coil bobbin, the coil bobbin having a winding area, a fixing portion provided on one side of the coil bobbin, the fixing portion having at least two blind holes, a conductive portion provided therein, a welding portion extending from one side of the conductive portion, a lead pin provided at the bottom of the conductive portion and passing through the fixing portion, the lead pin being located on the back side of the winding area, an inlet groove and an outlet groove being respectively provided on both sides of the end face of the coil bobbin, the inlet groove and the outlet groove being provided with a first through hole and a second through hole, the first through hole being close to the winding area, and the second through hole being close to the fixing portion.

[0007] Preferably, a recessed groove is provided on the outer end surface of the coil skeleton, and the coil skeleton is provided with a through hole for accommodating the static iron core, and a protruding guide portion is provided at one end of the through hole.

[0008] Preferably, inclined guide portions are provided at the outlet and the inlet of the first through hole and the second through hole.

[0009] Preferably, raised oblique blocks are provided on both sides of the conductive portion and abut against the side walls of the blind hole, and the conductive portion is provided with a threaded hole.

[0010] Preferably, a clearance groove is provided on one side of the blind hole, and the clearance groove is located right in front of the fixing portion.

[0011] Preferably, the welding portion is provided in the clearance groove, and the conductive portion and the welding portion are flush with the end surface of the winding area.

[0012] Preferably, limiting portions are provided on both sides of the bottom of the fixing portion.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) In the present invention, the two ends of the coil are respectively wound around the lead pins through the wire inlet and outlet grooves, which helps to protect the two ends of the coil. In addition, since the lead pins are on the back of the winding area, the flux is prevented from splashing onto the surface of the coil, avoiding damage to the coil. Through structural optimization, the product has the advantage of preventing the coil from being damaged.

[0016] (2) In the present invention, the wire is electrically connected to the wiring nose, and the screw passes through the wiring nose and is threadedly connected to the threaded hole to electrically connect the wiring nose to the conductive part; or the wire is directly wrapped around the rod of the screw, and the head of the screw presses the wire against the conductive part; or the wire is electrically connected to the welding part through soldering. The above design enables the product to have the advantage of providing multiple wiring methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a coil skeleton of an AC contactor during assembly according to the present invention;

[0018] Figure 2 This is a schematic diagram of the decomposition structure of the coil skeleton of an AC contactor of the utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the decomposition structure of the coil skeleton of an AC contactor of the utility model. Figure 2 ;

[0020] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0021] Figure numerals: 1. Coil skeleton; 2. Conductive part; 3. First through hole; 4. Second through hole; 5. Guide part; 6. Static iron core; 7. Moving iron core; 8. Return spring; 11. Winding area; 12. Fixing part; 13. Blind hole; 14. Inlet groove; 15. Outlet groove; 16. Countersunk groove; 17. Through hole; 121. Limiting part; 131. Make way groove; 171. Guide part; 21. Welding part; 22. Lead-out pin; 23. Bevel block; 24. Threaded hole. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0025] Reference example Figures 1 to 3 , a coil skeleton of an AC contactor, including a coil skeleton 1, the coil skeleton 1 is provided with a winding area 11, a fixing portion 12 is provided on one side of the coil skeleton 1, the fixing portion 12 is provided with at least two blind holes 13, a conductive portion 2 is provided in the blind hole 13, a welding portion 21 is extended on one side of the conductive portion 2, a lead pin 22 is provided at the bottom of the conductive portion 2, and passes through the fixing portion 12, the lead pin 22 is located on the back of the winding area 11, and an inlet groove 14 and an outlet groove 15 are provided on both sides of the end surface of the coil skeleton 1, respectively. The inlet groove 14 and the outlet groove 15 are provided with a first through hole 3 and a second through hole 4, the first through hole 3 is close to the winding area 11, and the second through hole 4 is close to the fixing portion 12, and the two ends of the coil are respectively wound around the lead pin 22 through the inlet groove 14 and the outlet groove 15, which helps to protect the two ends of the coil, and because the lead pin 22 is on the back of the winding area 11, it prevents flux from splashing onto the surface of the coil, thereby avoiding damage to the coil;

[0026] It is worth mentioning that the outer end surface of the coil bobbin 1 is provided with a recessed groove 16, and the coil bobbin 1 is provided with a through hole 17 for accommodating the static iron core 6. One end of the through hole 17 is provided with a raised guide portion 171. The recessed groove 16 prevents the return spring 8 from detaching and displacing, and the through hole 17 is convenient for being mounted on the static iron core 6. The guide portion 171 is used to provide an upward and downward guide for the moving iron core 7 to prevent the center lines of the moving and static iron cores from deviating.

[0027] It is worth mentioning that inclined guide parts 5 are provided at the exit and entrance of the first through hole 3 and the second through hole 4, and the guide parts 5 guide the coil to quickly enter the wire inlet groove 14 and the wire outlet groove 15;

[0028] It is worth mentioning that raised oblique blocks 23 are provided on both sides of the conductive part 2 and abut against the side walls of the blind hole 13. The conductive part 2 is provided with a threaded hole 24. The conductive part 2 is connected and fixed to the blind hole 13 by means of the oblique blocks 23 in an interference fit manner. The wire is electrically connected to the wiring nose. The screw passes through the wiring nose and is threadedly connected to the threaded hole 24 to electrically connect the wiring nose to the conductive part 2. Alternatively, the wire can be directly wrapped around the shaft of the screw, and the head of the screw presses the wire against the conductive part 2. Alternatively, the wire can be electrically connected to the welding part 21 through soldering.

[0029] It is worth mentioning that a clearance groove 131 is provided on one side of the blind hole 13. The clearance groove 131 is located just in front of the fixing portion 12. The clearance groove 131 gives way to the welding portion 21, so that the welding portion 21 is away from the winding area 11, thereby preventing the soldering flux from splashing onto the coil surface during welding.

[0030] It is worth mentioning that the welding portion 21 is arranged in the clearance groove 131, and the conductive portion 2, the welding portion 21 and the end surface of the winding area 11 are flush, which is convenient for winding;

[0031] It is worth mentioning that limiting portions 121 are provided on both sides of the bottom of the fixing portion 12 , and the limiting portions 121 limit the coil from being displaced to both sides of the fixing portion 12 .

[0032] The above design solution can enable the product to achieve the advantages of preventing coil damage and providing multiple wiring methods.

[0033] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A coil frame for an AC contactor, comprising a coil frame (1), characterized in that: The coil skeleton (1) is provided with a winding area (11), a fixing portion (12) is provided on one side of the coil skeleton (1), the fixing portion (12) is provided with at least two blind holes (13), a conductive portion (2) is provided inside the blind hole (13), a welding portion (21) is extended on one side of the conductive portion (2), a lead pin (22) is provided at the bottom of the conductive portion (2) and passes through the fixing portion (12), the lead pin (22) is located on the back side of the winding area (11), and an inlet groove (14) and an outlet groove (15) are provided on both sides of the end face of the coil skeleton (1), the inlet groove (14) and the outlet groove (15) are provided with a first through hole (3) and a second through hole (4), the first through hole (3) is close to the winding area (11), and the second through hole (4) is close to the fixing portion (12).

2. The coil bobbin of the AC contactor according to claim 1, characterized in that: The outer end surface of the coil frame (1) is provided with a sinking groove (16), the coil frame (1) is provided with a through hole (17) for accommodating a static iron core, and one end of the through hole (17) is provided with a protruding guide portion (171).

3. The coil bobbin of the AC contactor according to claim 2, characterized in that: Inclined guide portions (5) are provided at the outlet and inlet of the first through hole (3) and the second through hole (4).

4. The coil bobbin of the AC contactor according to claim 2, characterized in that: Protruding oblique blocks (23) are provided on both sides of the conductive part (2) and abut against the side walls of the blind hole (13); and a threaded hole (24) is provided on the conductive part (2).

5. The coil bobbin of the AC contactor according to claim 3 or 4, characterized in that: A clearance groove (131) is provided on one side of the blind hole (13), and the clearance groove (131) is located right in front of the fixing portion (12).

6. The coil bobbin of the AC contactor according to claim 5, characterized in that: The welding portion (21) is arranged in the clearance groove (131), and the conductive portion (2), the welding portion (21) and the end surface of the winding area (11) are flush.

7. The coil bobbin of the AC contactor according to claim 5, characterized in that: Limiting portions (121) are provided on both sides of the bottom of the fixing portion (12).

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