CN213781947U

CN213781947U - Contactor action reliable moves iron core structure and contactor thereof

Info

Publication number: CN213781947U
Application number: CN202022168822.4U
Authority: CN
Inventors: 黄鹤; 谭秋雪; 汤保成; 霍振普; 袁进
Original assignee: Zhongtai Fuan Dongguan Electronic Technology Co ltd
Current assignee: Zhongtai Fuan Dongguan Electronic Technology Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-07-23
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to the technical field of contactors, in particular to a movable iron core structure with reliable contactor action and a contactor thereof, which comprises a body; the top surface of the body is provided with an attraction surface; the suction surface is sunken downwards to form a sinking groove for limiting the return spring. The utility model is provided with a shallow sinking groove on the suction surface for limiting the reset spring; the action of the reset spring is to prevent the hidden trouble that the contact can not be completely attracted when the reset spring transversely shifts to the position between the attraction surfaces of the moving iron core and the static iron core when the attraction force is almost unchanged; meanwhile, the transverse deviation of the resetting spring can be prevented, and metal scraps generated by friction between the resetting spring and the wall of the spring hole of the push rod or the stationary iron core can be reduced as much as possible, so that the occurrence rate of the action jamming of the movable iron core caused by the metal scraps is effectively avoided.

Description

Contactor action reliable moves iron core structure and contactor thereof

Technical Field

The utility model relates to a contactor technical field, concretely relates to contactor action is reliable moves iron core structure and contactor thereof.

Background

A contactor is an electronic control device having a control system (also known as an input loop) and a controlled system (also known as an output loop), typically used in automatic control circuits, which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

The direct current contactor is one of contactors, and most of the existing direct current contactors adopt a movable spring direct-acting type (also called a solenoid direct-acting type) scheme, and the principle is that the direct current contactor is driven by a coil, electromagnetic force is generated through a magnetic circuit with a certain shape surrounding the periphery, and initial kinetic energy is provided for attraction of product contacts.

The magnetic circuit system of the dc contactor generally includes a yoke plate, a bracket, a magnetic ring, a stationary core and a movable core, which form a closed loop around the axial direction of the coil, and only a certain gap is left between the movable core and the stationary core.

A return spring is arranged at the position of the pushing rod between the movable iron core and the static iron core, and the return spring has the function of keeping a certain impact resistance when the product is not electrified. When the coil is electrified, the movable iron core needs to overcome the counter force of the reset spring and move towards the direction of the static iron core; the conventional return spring is directly arranged on the top surface of the movable iron core, the bottom of the return spring is not positioned, and when the return spring is used, the return spring is easy to transversely deviate to a position between the suction surface of the movable iron core and the suction surface of the static iron core, so that adverse reaction is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned among the prior art not enough, provide a contactor action is reliable moves iron core structure and contactor thereof.

The purpose of the utility model is realized through the following technical scheme: a movable iron core structure with reliable contactor action comprises a body; the top surface of the body is provided with an attraction surface; the suction surface is sunken downwards to form a sinking groove for limiting the return spring.

The utility model discloses further set up to, the heavy groove degree of depth is greater than the line footpath's of resetting the spring half.

The utility model discloses further set up as, the side of body is equipped with and is used for ventilative tangent plane.

A contactor comprises an insulating cover, a yoke iron plate, a bracket, a static contact, a moving point plate and a moving spring assembly; an arc extinguishing chamber is formed between the insulating cover and the yoke plate; one end of the static contact extends into and is fixed in the arc extinguishing chamber; the bracket is arranged at the bottom of the yoke iron plate; the movable spring assembly comprises a push rod and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod to move so that the moving point plate is contacted with the fixed contact.

The magnetic circuit assembly comprises a static iron core, a movable iron core and a coil which are all arranged on the bracket; the coil is wound outside the static iron core; the movable iron core is arranged at the bottom of the static iron core; one end of the push rod is connected with the movable iron core; the other end of the push rod is connected with the moving point plate.

The top surface of the movable iron core is provided with a suction surface; the suction surface is recessed downwards to form a sink groove; and a return spring is arranged between the sinking groove and the bottom of the static iron core.

The utility model discloses further set up to, the side of moving the iron core is equipped with and is used for ventilative tangent plane.

The utility model is further arranged that the bottom of the static iron core is provided with a spring hole; one end of the resetting spring is arranged in the spring hole; the other end of the resetting spring is arranged on the sinking groove.

The utility model is further arranged that the static iron core is provided with a perforation; the push rod penetrates through the through hole; the reset spring is sleeved outside the push rod.

The utility model has the advantages that: the utility model is provided with a shallow sinking groove on the suction surface for limiting the reset spring; the action of the reset spring is to prevent the hidden trouble that the contact can not be completely attracted when the reset spring transversely shifts to the position between the attraction surfaces of the moving iron core and the static iron core when the attraction force is almost unchanged; meanwhile, the transverse deviation of the resetting spring can be prevented, and metal scraps generated by friction between the resetting spring and the wall of the spring hole of the push rod or the stationary iron core can be reduced as much as possible, so that the occurrence rate of the action jamming of the movable iron core caused by the metal scraps is effectively avoided.

Drawings

The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.

Fig. 1 is a cross-sectional view of the contactor of the present invention;

fig. 2 is a cross-sectional view of the bracket of the present invention;

FIG. 3 is a schematic structural diagram of the movable iron core of the present invention;

wherein: 1. an insulating cover; 11. an arc-extinguishing chamber; 2. a yoke iron plate; 3. a support; 41. static contact; 42. a moving point plate; 5. a push rod; 61. a stationary iron core; 62. a movable iron core; 7. a coil; 81. a body; 82. cutting into noodles; 83. a suction surface; 84. sinking a groove; 85. a spring hole; 86. perforating; 9. and (4) resetting the spring.

Detailed Description

The invention will be further described with reference to the following examples.

As can be seen from fig. 1 to 3; the movable iron core structure of the contactor with reliable action comprises a body 81; the top surface of the body 81 is provided with a suction surface 83; the attracting surface 83 is recessed downward to form a sinking groove 84 for limiting the return spring 9.

Specifically, in the movable iron core structure of the contactor with reliable action according to the embodiment, a shallow sinking groove 84 is arranged on the attraction surface 83 to limit the return spring 9; the action is that under the premise that the attraction force is almost unchanged, the hidden trouble that the contact can not be completely attracted because the reset spring 9 transversely deviates to the attraction surface 83 of the movable and static iron cores 61 when the movable iron core 62 acts is prevented; meanwhile, the reset spring 9 can be prevented from laterally deviating, and metal scraps generated by friction between the reset spring 9 and the pushing rod 5 or the hole wall of the spring hole 85 of the static iron core 61 are reduced as much as possible, so that the occurrence rate of action blocking of the movable iron core 62 caused by the metal scraps is effectively avoided.

In the movable iron core structure with reliable contactor action described in this embodiment, the depth of the sinking groove 84 is greater than half of the wire diameter of the return spring 9. The return spring 9 can be more optimally limited by the arrangement.

In the movable iron core structure of the contactor according to this embodiment, the side surface of the body 81 is provided with a tangent plane 82 for ventilation. Through the arrangement, when the movable iron core 62 is attached to the static iron core 61, the ventilation effect can be achieved.

The contactor according to the embodiment includes an insulating cover 1, a yoke plate 2, a bracket 3, a fixed contact 41, a moving point plate 42 and a moving spring assembly; an arc extinguishing chamber 11 is formed between the insulating cover 1 and the yoke plate 2; one end of the static contact 41 extends into and is fixed in the arc extinguishing chamber 11; the bracket 3 is arranged at the bottom of the yoke iron plate 2; the movable spring assembly comprises a push rod 5 and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod 5 to move so as to enable the moving point plate 42 to be in contact with the fixed contact 41;

the magnetic circuit component comprises a static iron core 61, a movable iron core 62 and a coil 7 which are all arranged on the bracket 3; the coil 7 is wound outside the static iron core 61; the movable iron core 62 is arranged at the bottom of the static iron core 61; one end of the push rod 5 is connected with the movable iron core 62; the other end of the push rod 5 is connected with a moving point plate 42.

The top surface of the movable iron core 62 is provided with a suction surface 83; the suction surface 83 is recessed downwards to form a sinking groove 84; a return spring 9 is arranged between the sinking groove 84 and the bottom of the static iron core 61.

Specifically, in the contactor according to this embodiment, an arc extinguishing chamber 11 is formed between the insulating cover 1 and the yoke plate 2, the stationary contact 41 is fixed at the top of the arc extinguishing chamber 11, the moving-point plate 42 moves in the arc extinguishing chamber 11, the push rod 5 penetrates into the arc extinguishing chamber 11 from the bottom of the yoke plate 2 and then is connected to the moving-point plate 42, when the coil 7 is energized, the electromagnetic force generated by the magnetic circuit component moves the moving iron core 62 in the direction of closing the magnetic circuit, that is, moves toward the stationary iron core 61, so that the moving iron core 62 drives the push rod 5 to move upward, and the moving-point plate 42 is in contact with the stationary contact 41; when the coil 7 is not energized, the return spring 9 keeps the contactor against a certain impact force, and when the coil 7 is energized, the movable core 62 needs to move toward the stationary core 61 against the reaction force of the return spring 9. In addition, in the embodiment, a shallow sinking groove 84 is arranged on the suction surface 83 to limit the return spring 9; the action is that under the premise that the attraction force is almost unchanged, the hidden trouble that the contact can not be completely attracted because the reset spring 9 transversely deviates to the attraction surface 83 of the movable and static iron cores 61 when the movable iron core 62 acts is prevented; meanwhile, the reset spring 9 can be prevented from laterally deviating, and metal scraps generated by friction between the reset spring 9 and the pushing rod 5 or the hole wall of the spring hole 85 of the static iron core 61 are reduced as much as possible, so that the occurrence rate of action blocking of the movable iron core 62 caused by the metal scraps is effectively avoided.

In the contactor according to this embodiment, the depth of the sinking groove 84 is greater than half of the wire diameter of the return spring 9. The return spring 9 can be more optimally limited by the arrangement.

In the contactor according to this embodiment, the side surface of the movable iron core 62 is provided with a cut surface 82 for ventilation. Through the arrangement, when the movable iron core 62 is attached to the static iron core 61, the ventilation effect can be achieved.

In the contactor according to this embodiment, the bottom of the stationary core 61 is provided with a spring hole 85; one end of the return spring 9 is arranged in the spring hole 85; the other end of the return spring 9 is arranged on the sinking groove 84. The return spring 9 is fixed by the arrangement.

In the contactor according to this embodiment, the stationary core 61 is provided with a through hole 86; the push rod 5 is arranged in the through hole 86 in a penetrating way; the return spring 9 is sleeved outside the push rod 5. The structure of the contactor is more reasonable through the arrangement.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a contactor action is reliable moves iron core structure which characterized in that: comprises a body (81); the top surface of the body (81) is provided with a suction surface (83); the suction surface (83) is recessed downwards to form a sinking groove (84) used for limiting the return spring (9).

2. The movable iron core structure with reliable contactor action according to claim 1, characterized in that: the depth of the sinking groove (84) is more than half of the wire diameter of the return spring (9).

3. The movable iron core structure with reliable contactor action according to claim 1, characterized in that: the side surface of the body (81) is provided with a tangent plane (82) for ventilation.

4. A contactor, characterized by: the device comprises an insulating cover (1), a yoke plate (2), a bracket (3), a static contact (41), a moving point plate (42) and a moving spring component; an arc extinguishing chamber (11) is formed between the insulating cover (1) and the yoke plate (2); one end of the static contact (41) extends into and is fixed in the arc extinguishing chamber (11); the bracket (3) is arranged at the bottom of the yoke iron plate (2); the movable spring assembly comprises a push rod (5) and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod (5) to move so as to enable the moving point plate (42) to be in contact with the fixed contact (41);

the magnetic circuit component comprises a static iron core (61), a movable iron core (62) and a coil (7) which are all arranged on the bracket (3); the coil (7) is wound outside the static iron core (61); the movable iron core (62) is arranged at the bottom of the static iron core (61); one end of the push rod (5) is connected with the movable iron core (62); the other end of the push rod (5) is connected with a moving point plate (42);

the top surface of the movable iron core (62) is provided with a suction surface (83); the suction surface (83) is recessed downwards to form a sink groove (84); and a return spring (9) is arranged between the sinking groove (84) and the bottom of the static iron core (61).

5. A contactor according to claim 4, characterized in that: the depth of the sinking groove (84) is more than half of the wire diameter of the return spring (9).

6. A contactor according to claim 4, characterized in that: the side surface of the movable iron core (62) is provided with a tangent plane (82) for ventilation.

7. A contactor according to claim 4, characterized in that: the bottom of the static iron core (61) is provided with a spring hole (85); one end of the resetting spring (9) is arranged in the spring hole (85); the other end of the return spring (9) is arranged on the sinking groove (84).

8. A contactor according to claim 4, characterized in that: the static iron core (61) is provided with a through hole (86); the push rod (5) is arranged in the through hole (86) in a penetrating way; the return spring (9) is sleeved outside the push rod (5).