Alternating current contactor iron core

Abstract

The utility model provides an alternating current contactor iron core, which solves the problems that in the conventional contactor iron core, after one steel sheet is damaged, the thickness of the iron core is reduced, and as the length of a screw is fixed, the residual silicon steel sheet left on the screw slides on the screw, and the service life of the iron core is prolonged. And the iron core can be widely applied to the field of electric appliance elements. The device is specifically formed by laminating a plurality of steel sheets with E-shaped structures, and the steel sheets are fixed together through screws; the steel sheet comprises three vertical ends and a horizontal end, and the three vertical ends are sequentially arranged in the length direction of the horizontal end; a placement groove is formed in the end face of the vertical end, the short circuit ring is embedded in the placement groove, and a hollow groove is formed in the short circuit ring; an elastic piece capable of abutting against the inner wall of the short circuit ring is arranged in the vertical end in the length direction of the short circuit ring in a sliding mode, and the elastic piece is composed of a spring column and a clamping plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical components, and particularly relates to an AC contactor iron core. Background Art

[0002] An AC contactor is an automatic switch used to connect or disconnect loaded AC circuits or large-capacity control circuits. It is mainly composed of an electromagnetic mechanism, a contact system, an arc extinguishing device, etc. The E-shaped AC contactor core is an important component of the electromagnetic mechanism. Through the action of the electromagnetic mechanism with the E-shaped AC contactor core, the contacts in the contact system can be driven to close and open, thereby controlling the circuit.

[0003] In actual use, since the iron core is made of stacked steel sheets, which are fixed together by screws, when one of the silicon steel sheets is damaged, the thickness of the iron core will be reduced. Since the length of the screw is fixed, the remaining steel sheet left on the screw will slide on the screw. At this time, the iron core needs to be replaced, which not only increases the maintenance cost but also wastes resources. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and provide an AC contactor iron core.

[0005] To this end, the utility model provides an AC contactor core, which is formed by stacking a number of E-shaped steel sheets, and the steel sheets are fixed together by screws; the steel sheet includes three vertical ends and one horizontal end, and the three vertical ends are arranged in sequence along the length direction of the horizontal end; the end surface of the vertical end is provided with a placement groove, and the short-circuit ring is embedded in the placement groove, and the short-circuit ring is provided with a hollow groove; an elastic member that can abut against the inner wall of the short-circuit ring is slidably provided in the vertical end along the length direction of the short-circuit ring, and the elastic member is composed of a spring column and a clamping plate.

[0006] Furthermore, a through hole is penetrated on the end face of the horizontal end, and the through hole divides the horizontal end into a first horizontal end and a second horizontal end; a first arc-shaped buffer portion is provided at the connection between the first horizontal end and the vertical end, and a buffer portion is provided between the first horizontal end and each of the vertical ends connected thereto, and the bending direction of the buffer portion is toward the connection between the vertical end and the first horizontal end.

[0007] Furthermore, a second arc-shaped buffer portion is provided at the connection between the second horizontal end and the vertical end, and a buffer portion is also provided between the second horizontal end and each of the vertical ends connected thereto, and the bending direction of the buffer portion is toward the connection between the vertical end and the second horizontal end.

[0008] Furthermore, three fixing holes are opened on one side of the iron core, and the screw is sleeved in each of the fixing holes. A nut is threadedly connected to one end of the screw, and the end of the nut contacts the iron core.

[0009] Furthermore, a pair of limiting protrusions are fixedly connected to the inner wall of the fixing hole, a pair of limiting grooves are opened on the side wall of the screw, and the limiting protrusions are slidably connected in the limiting grooves.

[0010] The utility model provides an AC contactor core, which has the following beneficial effects:

[0011] Due to the elastic parts, when one of the steel sheets is damaged, the remaining silicon steel sheets will not shake on the screws, and the iron core does not need to be replaced, which reduces maintenance costs and saves energy. By setting a short-circuit ring, when the armature is adsorbed on the iron core, the vibration and noise of the iron core can be greatly reduced, improving the working quality of the contactor iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a structural diagram of a steel sheet of the utility model;

[0014] Figure 3 It is a structural diagram of the short-circuit ring part of the utility model;

[0015] Figure 4 It is a structural diagram of the screw and fixing hole part of the utility model;

[0016] Markings in the figure: 1. horizontal end, 2. first horizontal end, 3. second horizontal end, 4. through hole, 5. vertical end, 6. first arc-shaped buffer portion, 7. buffer portion, 8. second arc-shaped buffer portion, 9. limiting protrusion, 10. placement groove, 11. short-circuit ring, 12. hollow groove, 13. spring, 14. nut, 15. screw, 16. limiting groove, 17. fixing hole, 18. clamping plate. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0018] like Figure 1As shown in FIG. 2 , the utility model provides an AC contactor core, which is formed by stacking a plurality of E-shaped steel sheets, and then fixing the steel sheets together by screws 15. The steel sheet includes three vertical ends 5 and a horizontal end 1, and the three vertical ends 5 are arranged in sequence along the length direction of the horizontal end 1. A circular or elliptical through hole 4 is penetrated on the end surface of the horizontal end 1. In one embodiment, the shape of the through hole 4 is circular, which can facilitate the processing of the through hole 4.

[0019] A first arc-shaped buffer portion 6 is provided at the connection between the first horizontal end 2 and the vertical end 5 , and a buffer portion 7 is provided between the first horizontal end 2 and each vertical end 5 connected thereto. The buffer portion 7 bends toward the connection between the vertical end 5 and the first horizontal end 2 .

[0020] A second arc-shaped buffer portion 8 is provided at the connection between the second horizontal end 3 and the vertical end 5 , and a buffer portion 7 is provided between the second horizontal end 3 and each vertical end 5 connected thereto. The buffer portion 7 bends toward the connection between the vertical end 5 and the second horizontal end 3 .

[0021] After the through hole 4 is opened, the through hole 4 divides the horizontal end 1 into the first horizontal end 2 and the second horizontal end 3. The first horizontal end 2 and the second horizontal end 3 are fixedly connected together through the middle vertical end 5, and the vertical ends 5 on both sides are respectively fixedly connected to the first horizontal end 2 and the second horizontal end 3. Therefore, when the end of the vertical end 5 facing away from the horizontal end 1 squeezes the vertical end 5 on one side, the vertical end 5 will transfer the force to the first horizontal end 2 or the second horizontal end 3 connected thereto, and due to the existence of the through hole 4 between the first horizontal end 2 and the second horizontal end 3, there will be a gap between the first horizontal end 2 and the second horizontal end 3. Therefore, the first horizontal end 2 or the second horizontal end 3 will bend at the connection with the middle vertical end 5, and the first horizontal end 2 and the second horizontal end 3 will be close to each other, that is, the bending will occur at the through hole 4, and the through hole 4 is circular. It can be concluded that the connection between the first horizontal end 2 or the second horizontal end 3 and the middle vertical end 5 is an arc surface, which can make the first horizontal end 3 and the second horizontal end 3 more likely to bend. After bending, since the side wall of the through hole 4 is an arc, it can quickly restore its previous shape and has good flexibility. At the same time, due to the presence of the first arc buffer portion 6 and the second arc buffer portion 8, the connection between the vertical end 5 and the first horizontal end 2 and the second horizontal end 3 is set to be an arc, so that the vertical ends 5 on both sides are more likely to be deformed after being squeezed, and after deformation, it can be well restored to its previous shape.

[0022] At the same time, due to the existence of the buffer portion 7, when the first horizontal end 2 and the second horizontal end 3 are deformed, the buffer portion 7 will also bend. Since the buffer portion 7 is originally curved, it will generate a force to restore the shape, thereby restoring the first horizontal end 2 and the second horizontal end 3 to their previous shapes.

[0023] like Figure 3 As shown, a placement groove 10 is provided on the end surface of the vertical end 5, and the short-circuit ring 11 is embedded in the placement groove 10. By providing the placement groove 10, the short-circuit ring 11 can be installed on the end surface of the vertical end 5, with a simple structure and convenient installation. A hollow groove 12 is provided on the short-circuit ring 11. By providing the hollow groove 12, the weight of the short-circuit ring 11 can be reduced, and then the weight of the entire contactor core can be reduced, which is convenient for transportation.

[0024] An elastic member capable of abutting against the inner wall of the short-circuit ring 11 is provided in the vertical end 5 so as to slide along the length direction of the short-circuit ring 11. The elastic member is composed of a spring column 13 and a clamping plate 18. When the steel sheet is damaged, even if the thickness of the vertical end 5 is reduced, the elastic member can abut against the inner wall of the short-circuit ring 11 to limit the length direction of the short-circuit ring 11 and more stably fix the short-circuit ring 11 on the vertical end 5.

[0025] like Figure 4 As shown, three fixing holes 17 are opened on one side of the iron core, and a screw 15 is sleeved in each fixing hole 17. One end of the screw 15 is threadedly connected to a nut 14, and the end of the nut 14 is in conflict with the iron core. When installing the iron core, first arrange a plurality of steel sheets together, and then insert the three screws 15 into the three fixing holes 17 respectively, and screw the nut 14 on one end of the screw 15 to further fix the plurality of steel sheets. No rivets are needed, and the iron core is detachable, which is conducive to reuse, and has a simple structure and is easy to manufacture.

[0026] A pair of limiting protrusions 9 are fixedly connected to the inner wall of the fixing hole 17, and a pair of limiting grooves 16 are opened on the side wall of the screw 15. The limiting protrusion 9 is slidably connected in the limiting groove 16. By setting the limiting groove 16 and the limiting protrusion 9, after the screw 15 slides into the fixing hole 17, the limitation in the rotation direction is achieved. When the nut 14 is threadedly connected with the screw 15, there is no need to use special tools to clamp and limit one end of the screw 15, and the nut 14 can be installed, thereby improving the convenience of operation.

[0027] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, 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 should not be understood as a limitation on the present invention.

[0028] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. An AC contactor core, which is formed by stacking a number of E-shaped steel sheets, and the steel sheets are fixed together by screws; characterized in that: The steel sheet includes three vertical ends and one horizontal end, and the three vertical ends are arranged in sequence along the length direction of the horizontal end; the end face of the vertical end is provided with a placement groove, and the short-circuit ring is embedded in the placement groove, and the short-circuit ring is provided with a hollow groove; an elastic member that can slide along the length direction of the short-circuit ring and abut against the inner wall of the short-circuit ring is provided in the vertical end, and the elastic member is composed of a spring column and a clamping plate.

2. The AC contactor core according to claim 1, characterized in that: A through hole is penetrated on the end face of the horizontal end, and the through hole divides the horizontal end into a first horizontal end and a second horizontal end; a first arc-shaped buffer portion is provided at the connection between the first horizontal end and the vertical end, and a buffer portion is provided between the first horizontal end and each of the vertical ends connected thereto, and the bending direction of the buffer portion is toward the connection between the vertical end and the first horizontal end.

3. An AC contactor core according to claim 2, characterized in that: A second arc-shaped buffer portion is provided at the connection between the second horizontal end and the vertical end, and a buffer portion is also provided between the second horizontal end and each of the vertical ends connected thereto, and the buffer portion bends toward the connection between the vertical end and the second horizontal end.

4. An AC contactor core according to any one of claims 1 to 3, characterized in that: Three fixing holes are opened on one side of the iron core, and the screw is sleeved in each of the fixing holes. A nut is threadedly connected to one end of the screw, and the end of the nut contacts the iron core.

5. The AC contactor core according to claim 4, characterized in that: A pair of limiting protrusions are fixedly connected to the inner wall of the fixing hole, a pair of limiting grooves are opened on the side wall of the screw, and the limiting protrusions are slidably connected in the limiting grooves.

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