阅读说明：本技术 一种单磁铁灭弧继电器 (Single magnet arc extinguishing relay ) 是由 蔡瑞玉 庄道建 朱张旭 于 2018-07-25 设计创作，主要内容包括：本发明公开了一种单磁铁灭弧继电器,属于继电器技术领域。一种单磁铁灭弧继电器,包括灭弧室壳体、静触点、动触点和驱动动触点上下升降的升降装置,所述灭弧室壳体上成型有容置槽,容置槽内设置有灭弧磁铁,灭弧磁铁位于所述静触点和动触点之间；所述灭弧磁铁内的磁场方向与电流方向垂直或近似垂直的角度,所述容置槽内还设置有至少一个磁体,磁体至少分布在所述灭弧磁铁的一侧。本发明通过只需要一块最普通的磁铁就可以实现解决继电器产品经常出现的电弧现象。不用考虑磁铁安装的极性方向,可以极大的提高生产效率。而且因为只需要使用一个磁铁就可以实现灭弧的效果,大大的降低了生产成本。(The invention discloses a single-magnet arc extinguishing relay, and belongs to the technical field of relays. A single-magnet arc extinguishing relay comprises an arc extinguishing chamber shell, a fixed contact, a movable contact and a lifting device for driving the movable contact to lift up and down, wherein a containing groove is formed in the arc extinguishing chamber shell, an arc extinguishing magnet is arranged in the containing groove, and the arc extinguishing magnet is located between the fixed contact and the movable contact; the magnetic field direction in the arc extinguishing magnet is perpendicular or approximately perpendicular to the current direction, at least one magnet is further arranged in the accommodating groove, and the magnet is at least distributed on one side of the arc extinguishing magnet. The invention can solve the arc phenomenon which often occurs in the relay product by only needing one most common magnet. The polar direction of magnet installation need not be considered, production efficiency can be very big improvement. And because only need use a magnet just can realize the effect of arc extinguishing, great reduction manufacturing cost.)

1. The utility model provides a single magnet arc extinguishing relay, includes the elevating gear of explosion chamber casing (1), stationary contact (2), movable contact (3) and drive movable contact (3) oscilaltion, its characterized in that: an accommodating groove (11) is formed in the arc extinguish chamber shell (1), an arc extinguish magnet (4) is arranged in the accommodating groove (11), and the arc extinguish magnet (4) is located between the fixed contact (2) and the movable contact (3); the direction of the magnetic field in the arc extinguishing magnet (4) is vertical or approximately vertical to the direction of the current.

2. The single-magnet blowout relay of claim 1, wherein: at least one magnet (6) is further arranged in the accommodating groove (11), and the magnet (6) is at least distributed on one side of the arc extinguishing magnet (4).

3. The single-magnet blowout relay of claim 1, wherein: the lower end part of the static contact (2) is arranged at the upper end part of the arc extinguishing magnet (4) from top to bottom; the movable contact (3) is positioned at the lower end of the fixed contact (2) and is arranged at the lower end part of the arc extinguishing magnet (4).

4. The single-magnet blowout relay of claim 1, wherein: the magnetic field direction of the arc extinguishing magnet (4) is that the left end is an N pole, and the right end is an S pole.

5. The single-magnet blowout relay of claim 1, wherein: the arc extinguishing chamber is characterized in that a movable contact guide frame (8) is arranged in the arc extinguishing chamber shell (1), a plurality of arc extinguishing grids (81) are arranged on the periphery of the movable contact guide frame (8), and the height of the upper end of each arc extinguishing grid (81) is flush with the height of the lower end of each arc extinguishing magnet (4) or the height of the upper end of each arc extinguishing grid (81) is higher than the height of the lower end of each arc extinguishing magnet (4).

6. The single-magnet blowout relay of claim 5, wherein: and a movable contact baffle plate (82) is respectively formed at two sides of the movable contact guide frame (8), and a movable contact limiting plate (83) used for limiting the movable contact (3) to move up and down is formed at one side of the movable contact baffle plate (82).

7. The single-magnet blowout relay of claim 5, wherein: the arc extinguishing grid (81) comprises a plurality of arc extinguishing columns (84), and the arc extinguishing columns (84) are long-strip-shaped.

8. The single-magnet blowout relay of claim 1, wherein: a connecting table (9) is arranged on the lower side of the arc extinguish chamber shell (1), the lifting device comprises a push rod (5) penetrating through the moving contact (3), and the lower end part of the push rod (5) is sleeved in the moving iron core (7); the push rod (5) is arranged in the connecting table (9) in a telescopic manner; the push rod (5) is sleeved with the movable iron core (7), the movable iron core (7) is inwards sunken to form a step part (71), a limiting part (51) is formed at the lower end of the push rod (5), and the lower side of the limiting part (51) is arranged on the upper side of the step part (71).

9. The single-magnet blowout relay of claim 8, wherein: a coil assembly (12) is arranged between the movable iron core (7) and the connecting table (9); the movable iron core (7) and the lower end part of the connecting table (9) are abutted against a return spring (13), and the push rod (5) is sleeved on the outer side of the return spring (13).

10. The single-magnet blowout relay of claim 8, wherein: the movable contact guide frame (8) and the static iron core (10) are sequentially arranged between the connecting table (9) and the arc extinguish chamber shell (1) from top to bottom.

Technical Field

The invention belongs to the technical field of relays, and particularly relates to a single-magnet arc-extinguishing relay.

Background

Conventionally, a relay is an electric control device, and is an electric appliance that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount excitation amount meets a predetermined requirement. It has an interactive relationship between a control system, also called an input loop, and a controlled system, also called an output loop. It is commonly used in automated control circuits, which are actually a "recloser" that uses low current to control high current operation. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

In a contact electric appliance, the process of making and breaking the current by contact is often accompanied by the generation and extinction of an electric arc. The arc is a gas discharge phenomenon and has certain harm to electrical appliances.

And the existing arc extinguishing mode not only has a complex structure, but also has requirements on the polarity of the wire. In the practical application process, if the wiring is reversely connected, the arc can not be extinguished, and the accumulation of the arc can be aggravated. In addition, in the process of applying magnetic quenching, the magnetic quenching can be realized by matching at least two magnets in the prior art, and the requirements on the placement position and the angle of the magnets are strict.

Disclosure of Invention

The invention aims to provide a relay which can realize arc extinction only by using a common magnet.

A single-magnet arc extinguishing relay comprises an arc extinguishing chamber shell, a fixed contact, a movable contact and a lifting device for driving the movable contact to lift up and down, wherein a containing groove is formed in the arc extinguishing chamber shell, an arc extinguishing magnet is arranged in the containing groove, and the arc extinguishing magnet is located between the fixed contact and the movable contact; the magnetic field direction in the arc extinguishing magnet is perpendicular or approximately perpendicular to the current direction.

Preferably, at least one magnet is further disposed in the accommodating groove, and the magnet is at least distributed on one side of the arc extinguishing magnet.

Preferably, the lower end part of the stationary contact is arranged at the upper end part of the arc extinguishing magnet from top to bottom; the movable contact is positioned at the lower end of the fixed contact and arranged at the lower end part of the arc extinguishing magnet.

Preferably, the magnetic field direction of the quenching magnet is N pole at the left end and S pole at the right end.

Preferably, a moving contact guide frame is arranged in the arc extinguishing chamber shell, a plurality of arc extinguishing grids are arranged on the periphery of the moving contact guide frame, and the height of the upper end of each arc extinguishing grid is flush with the height of the lower end of the arc extinguishing magnet or higher than the height of the upper end of each arc extinguishing grid.

Preferably, a movable contact baffle is respectively formed on two sides of the movable contact guide frame, and a movable contact limiting plate for limiting the movable contact from moving up and down is formed on one side of the movable contact baffle.

Preferably, the arc extinguishing grid comprises a plurality of arc extinguishing columns, and the shape of each arc extinguishing column is long.

Preferably, a connecting table is arranged on the lower side of the arc extinguish chamber shell, the lifting device comprises a push rod penetrating through the moving contact, and the lower end part of the push rod is sleeved in the moving iron core; the push rod is arranged in the connecting table in a telescopic manner; the push rod overcoat is equipped with move the iron core, moves the inside sunken shaping of iron core and have step portion, tip shaping spacing portion under the push rod, the downside of spacing portion is established the upside of step portion.

Preferably, a coil assembly is arranged between the movable iron core and the connecting table; the movable iron core is abutted against a reset spring with the lower end of the connecting table, and the push rod is sleeved on the outer side of the reset spring.

Preferably, the movable contact guide frame and the static iron core are sequentially arranged between the connecting table and the arc extinguish chamber shell from top to bottom.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

1. the invention can solve the arc phenomenon which often occurs in the relay product by only needing one most common magnet. And by utilizing the structure of the technical scheme, the polar direction of magnet installation does not need to be considered in the process of producing and manufacturing relay products, and the production efficiency can be greatly improved. And because only need use a magnet just can realize the effect of arc extinguishing, great reduction manufacturing cost.

2. The invention can further increase the arc extinguishing effect by arranging various modes such as grids and the like. Can obtain better arc extinguishing effect than prior art.

3. Compared with the prior art, the invention provides a non-polarity requirement for the connection, and the relay is manufactured by adopting the principle of magnetic quenching of an internal magnetic field. By utilizing the principle, a simple and feasible relay shell design scheme which can be compatible with most relay products on the market is provided. The relay field is a generally applied mature product, the design space is very small, and basically, no place can be improved.

4. The relay product has no polarity requirement during wiring, so that the probability of risk occurrence is greatly reduced.

5. The invention also provides a technical scheme of adopting the magnet and the iron core, so that the aim of arc extinction can be achieved only by using a magnet with a smaller volume, and the production cost is further reduced compared with the case of adopting a large magnet.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic view of the arc chute housing of FIG. 1 after it has been concealed;

FIG. 3 is a full cross-sectional view of a single-magnet arc-quenching relay in accordance with the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic diagram of a blowout magnet and magnet;

FIG. 6 is one of the arc extinguishing schematics of the present invention;

FIG. 7 is a second schematic diagram of the present invention;

in the figure: 1-an arc extinguishing chamber housing; 2-a stationary contact; 3-moving contact; 4-an arc extinguishing magnet; 5-a push rod; 6-a magnet; 7-a movable iron core; 8-moving contact guide frame; 9-a connection table; 10-a stationary core; 11-a receiving groove; 12-a coil assembly; 13-a return spring; 51-a limiting part; 71-a step portion; 81-arc extinguishing grid; 82-moving contact baffle; 83-movable contact limiting plate; 84-arc extinguishing column; 91-arc; 92-direction of arc travel; 93-direction of current flow; 94-magnetic field direction.

Detailed Description

The invention is further described below in terms of specific examples.