CN212783338U

CN212783338U - Magnetic protection module of switch device

Info

Publication number: CN212783338U
Application number: CN202021622221.XU
Authority: CN
Inventors: 刘时胜; 王斌; 周文静; 付志强
Original assignee: Jiangxi Hangtong Electric Technology Co ltd; Shanghai Retel Electric Technology Co ltd
Current assignee: Jiangxi Hangtong Electric Technology Co ltd; Shanghai Retel Electric Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-03-23
Anticipated expiration: 2030-08-06

Abstract

The utility model provides a switching device's magnetism protection module relates to the switch technology field, including casing and magnetism protection module, the utility model discloses in, through installing spout and recess, spout and ejector pin sliding connection, the recess sets up in the junction of armature and ejector pin, during the use, through the activity space of spout restriction ejector pin, when the ejector pin is hit by armature, the activity orbit of ejector pin receives the restriction of spout, make the device wholly obtain more stable breaking performance, can cooperate with the ejector pin through curved recess, the inside that the ejector pin can imbed the recess, thereby spacing effect has been played to the ejector pin, make the action of ejector pin more accurate, make the breaking action of ejector pin more reliable and more stable.

Description

Magnetic protection module of switch device

Technical Field

The utility model relates to the field of switch technology, especially, relate to a switching device's magnetism protection module.

Background

In the electrical equipment such as circuit breaker, in order to use the electric safety, generally equipped with the magnetic protection device used for cutting off the circuit, when the short circuit appears in the circuit or overload scheduling problem, the magnetic protection device can be fast the break circuit, avoid taking place the power consumption accident, there are various magnetic protection devices used for switch on the market at present, wherein, there are electromagnetic trip gear relatively common, when the short circuit fault appears in the circuit, the electromagnetic force produced in the electro-magnet is greater than the reaction force of the spring, make the armature can be sucked by the electro-magnet and make the main contact separate from the branch contact, thus the cut-off circuit plays the protective effect;

however, in the conventional magnetic protection module of the circuit breaker, when the circuit breaker is used, because the armature and the ejector rod are not fixed, when the armature strikes the ejector rod, the ejector rod is easy to have unstable action, and further the breaking effect of the circuit breaker is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a magnetic protection module of a switching device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a switching device's magnetism protection module, includes casing and magnetism protection module, the inside top of casing is provided with the spout, the inside middle part of casing is provided with magnetism protection module, the back shaft embedding sets up in the inside of casing, the yoke is nested to be set up in the outside both ends of back shaft, the armature is nested to be set up in the outside middle part of back shaft, the recess is seted up in one side that armature is close to the spout, the spring is nested to be set up in the outside center department of back shaft, the iron core embedding sets up in the inside of yoke, the coil is nested to be set up in the outside of iron core, the tip embedding of ejector pin sets.

Preferably, the cross section of spout is "U" font, ejector pin and spout are a set of movable connecting components.

Preferably, the armature is disposed directly above the top of the core.

Preferably, the yoke is provided to extend upward to an upper surface of the core.

Preferably, the groove is arc-shaped, and the ejector rod is embedded in the groove.

Preferably, one end of the spring is fixedly connected with the armature, and the other end of the spring is fixedly connected with the magnetic yoke.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through installing spout and recess, spout and ejector pin sliding connection, the recess sets up in the junction of armature and ejector pin, during the use, through the activity space of spout restriction ejector pin, when the ejector pin is hit by armature, the activity orbit of ejector pin receives the restriction of spout, make the device wholly obtain more stable breaking performance, can cooperate with the ejector pin through curved recess, the ejector pin can imbed the inside of recess, thereby spacing effect has been played the ejector pin, make the action of ejector pin more accurate, make the breaking action of ejector pin more reliable and more stable.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a partial structure of a middle magnetic protection module according to the present invention;

FIG. 3 is a structural exploded view of a middle magnetic protection module of the present invention;

fig. 4 is a schematic view of the local structure of the middle housing of the present invention.

In fig. 1 to 3, the correspondence between the part names or lines and the reference numbers is:

the magnetic protection device comprises a shell 1, a sliding chute 2, a magnetic protection module 3, a supporting shaft 4, a magnetic yoke 5, an armature 6, a groove 7, a spring 8, an iron core 9, a coil 10 and an ejector rod 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1 to 4; the utility model provides a switching device's magnetism protection module, including casing 1 and magnetism protection module 3, the inside top of casing 1 is provided with spout 2, the inside middle part of casing 1 is provided with magnetism protection module 3, back shaft 4 embedding sets up in the inside of casing 1, yoke 5 nestification sets up in back shaft 4's outside both ends, armature 6 nestification sets up in back shaft 4's outside middle part, recess 7 is seted up in one side that armature 6 is close to spout 2, the nested outside center department that sets up in back shaft 4 of spring 8, iron core 9 embedding sets up in yoke 5's inside, coil 10 nestification sets up in iron core 9's the outside, the tip embedding of ejector pin 11 sets up in spout 2's inside.

Furthermore, the cross section of the sliding groove 2 is U-shaped, the ejector rod 11 and the sliding groove 2 form a group of movable connecting components, the movable space of the ejector rod 11 is limited by the sliding groove 2, when the ejector rod 2 is hit by the armature 6, the movable track of the ejector rod 2 is limited by the sliding groove 2, so that the tripping action of the ejector rod 2 is kept stable, and the device integrally obtains more stable breaking performance.

Further, armature 6 sets up directly over the top of iron core 9, and armature 6 that sets up directly over iron core 9 can laminate in the upper surface of iron core 9 more to better being attracted by iron core 9.

Further, the yoke 5 extends upward to the upper surface of the iron core 9, and the magnetic field generated by energizing the coil 10 through the yoke 5 is uniformly distributed on the upper surface of the iron core 9, so that the magnetic force is concentrated on the top of the iron core 9, and the iron core 9 can attract the armature 6 conveniently.

Further, recess 7 is the arc, and ejector pin 11 embedding sets up in the inside of recess 7, can cooperate with ejector pin 11 through curved recess 7, and ejector pin 11 can imbed the inside of recess 7 to play spacing effect to ejector pin 11, make ejector pin 11's action more accurate, make ejector pin 11's breaking action more reliable and more stable.

Furthermore, one end of the spring 8 is fixedly connected with the armature 6, the other end of the spring 8 is fixedly connected with the magnetic yoke 5, when current in a circuit normally runs, magnetic force generated by the coil 10 is smaller than tension of the spring 8, the armature 6 cannot be attracted by the coil 10 under the action of the tension of the spring 8, the whole circuit breaker is in a normal working state, when short circuit or overload occurs in the circuit, the current in the coil 10 exceeds the current in the normal working state, so that the coil 10 generates electromagnetic force larger than the tension of the spring 8, the armature 6 moves downwards by taking the support shaft 4 as an axis to abut against the iron core 9, and a main contact and a branch contact are separated, so that the effect of circuit breaking is achieved.

The working principle is as follows: when in use, the device is integrally assembled inside the switch in advance, the magnetic protection module 3 is connected with a conductive loop in the switch in series, then, when the current in the circuit normally runs, the magnetic force generated by the coil 10 is smaller than the pulling force of the spring 8, the armature 6 cannot be attracted by the coil 10 under the pulling force of the spring 8, the whole circuit breaker is in a normal working state, then, when the short circuit or overload occurs in the circuit, the current in the coil 10 exceeds the current in the normal working state, so that the coil 10 generates the electromagnetic force larger than the pulling force of the spring 8, the armature 6 moves downwards by taking the support shaft 4 as an axis to abut against the iron core 9, next, the armature 6 strikes the ejector rod 11, the ejector rod 11 slides in the chute 2, the action of the ejector rod 11 is limited through the chute 2, the action of the ejector rod 11 is more stable, and finally, the whole circuit is cut off through the, the effect of protecting the circuit is achieved.

The embodiments of the present application have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A magnetic protection module of a switching device, comprising a housing (1) and a magnetic protection module (3), characterized in that: the inside top of casing (1) is provided with spout (2), the inside middle part of casing (1) is provided with magnetism protection module (3), back shaft (4) embedding sets up in the inside of casing (1), yoke (5) nestification sets up in the outside both ends of back shaft (4), armature (6) nestification sets up in the outside middle part of back shaft (4), recess (7) are seted up in one side that armature (6) are close to spout (2), spring (8) nestification sets up in the outside center department of back shaft (4), iron core (9) embedding sets up in the inside of yoke (5), coil (10) nestification sets up in the outside of iron core (9), the tip embedding of ejector pin (11) sets up in the inside of spout (2).

2. The magnetic protection module of a switching device according to claim 1, characterized in that the cross section of the chute (2) is "U" shaped, and the ejector rod (11) and the chute (2) are a set of movable connection components.

3. Magnetic protection module of a switching device, according to claim 1, characterized in that said armature (6) is arranged directly above the top of the iron core (9).

4. A magnetic protection module for a switchgear device, according to claim 1, characterized in that said yoke (5) is provided extending up to the upper surface of the core (9).

5. The magnetic protection module of a switching device according to claim 1, characterized in that the recess (7) is arc-shaped, and the plunger (11) is embedded inside the recess (7).

6. The magnetic protection module of a switching device according to claim 1, characterized in that one end of the spring (8) is fixedly connected to the armature (6) and the other end of the spring (8) is fixedly connected to the yoke (5).