阅读说明：本技术 一种触头包裹式引弧结构及一种触头机构 (Contact wrapping type arc striking structure and contact mechanism ) 是由 王震 侯学强 郑鹏 夏刚强 陈建东 于 2021-01-18 设计创作，主要内容包括：一种触头包裹式引弧结构及一种触头机构。其特征在于：触头板上固定有与其结构相吻合的引弧板,引弧板采用铁磁性材料,且所述引弧板上形成有包裹口,触头对应设置在包裹口内侧。其优点在于,将触头设置在包裹口内侧,从而实现引弧板对触头的包裹,使得触头四周均有磁场力的保护,在磁场作用下能够推开电弧,从而保护触头减轻电弧伤害,同时引弧板与触头板的结构相吻合,能够尽量保证引弧板与触头角持平,从而避免电弧弯道移动,可以让电弧顺着引弧板平滑移动,从而快速地把电弧引入灭弧装置,有效提高断路器的分断指标和触头的带电使用寿命。(A contact wrapped arc striking structure and a contact mechanism. The method is characterized in that: the contact plate is fixed with an arc striking plate matched with the structure of the contact plate, the arc striking plate is made of ferromagnetic materials, a wrapping opening is formed in the arc striking plate, and the contacts are correspondingly arranged on the inner side of the wrapping opening. Its advantage lies in, it is inboard at the parcel mouth with the contact setting, thereby realize the striking board to the parcel of contact, make the contact all have the protection of magnetic field force all around, can push electric arc away under the magnetic field effect, thereby the protection contact alleviates the electric arc injury, the striking board is identical with the structure of contact plate simultaneously, can guarantee that the striking board is kept level with the contact angle as far as possible, thereby avoid electric arc bend to remove, can let electric arc along striking board smooth movement, thereby introduce arc extinguishing device to electric arc fast, effectively improve the electrified life of the disconnected index of circuit breaker and contact.)

1. The utility model provides a contact parcel formula striking structure, includes the contact board and installs the contact on the contact board, its characterized in that: the contact plate is fixed with an arc striking plate matched with the contact plate in structure, the arc striking plate is made of ferromagnetic materials, a wrapping opening is formed in the arc striking plate, and the contacts are correspondingly arranged on the inner side of the wrapping opening.

2. The contact wrap-around arc ignition structure of claim 1, wherein: the contact board is straight plate structure, the contact sets up the both ends position at the contact board upper surface, the run-on plate is the straight plate structure with the contact board adaptation to install the upper surface at the contact board, just the run-on plate both ends are formed with the parcel mouth with contact looks adaptation.

3. The contact wrap-around arc ignition structure of claim 2, wherein: and bent arc striking angles extend outwards from the periphery of the arc striking plate.

4. The contact wrap-around arc ignition structure of claim 1, wherein: the contact plate is of a U-shaped structure and comprises a bottom plate part, a connecting part and a contact mounting part, and the contact is mounted on the contact mounting part;

the arc striking plate corresponds and is U type structure, the arc striking plate is installed on the bottom plate portion of touch board, and is formed with the parcel mouth with connecting portion, the adaptation of contact installation portion on the arc striking plate, the connecting portion and the setting of contact installation portion of touch board are in the parcel mouth.

5. The contact wrap-around arc ignition structure of claim 1, wherein: and a bent arc striking angle extends outwards from the end part of the arc striking plate.

6. A contact mechanism comprises a movable contact component (10) and a fixed contact component (20) which are correspondingly arranged, and is characterized in that: the moving contact component comprises a moving contact plate (1), a moving contact (2) and a first arc striking plate (3); the contact plate (1) is of a straight plate structure, the contacts (2) are arranged at two ends of the upper surface of the contact plate (1), the first arc striking plate (3) is of a straight plate structure matched with the movable contact plate (1) and is arranged on the upper surface of the movable contact plate (1), the first arc striking plate (3) is made of ferromagnetic materials, first wrapping openings (31) matched with the contacts (2) are formed at two ends of the first arc striking plate (3), and the movable contact (2) is located on the inner side of the first wrapping openings (31);

the static contact assembly comprises a static contact plate (4), a static contact (5) and a second arc striking plate (6); quiet touch panel (4) are U type structure, including bottom plate (41), connecting portion (42) and contact installation department (43), static contact (5) are installed on contact installation department (43), second run-on plate (6) correspond and are U type structure, second run-on plate (6) are installed on bottom plate (41) of quiet touch panel (4), and are formed with second package mouth (61) with connecting portion (42), contact installation department (43) looks adaptation on second run-on plate (6), connecting portion (42) and contact installation department (43) of quiet touch panel (4) set up at second package mouth (61) inboardly.

7. The contact mechanism of claim 6, wherein: bent first arc ignition angles (32) extend outwards from the periphery of the first arc ignition plate (3).

8. The contact mechanism of claim 6, wherein: and a bent second arc ignition angle (62) extends outwards from the end part of the second arc ignition plate (6).

Technical Field

The invention relates to an arc extinguishing and striking device of a circuit breaker, in particular to a contact wrapping type arc striking structure and a contact mechanism.

Background

When the movable and stationary contacts in the circuit breaker are separated due to faults such as short circuit and the like, electric arcs can be generated between the movable and stationary contacts, the electric arcs delay the disconnection time of the switch, reduce the disconnection performance of the switch, and even cause serious burning loss of loads and circuit breaker parts in the circuit.

Therefore, an arc striking structure is often arranged in the contact mechanism, so that electric arcs generated when moving and static contacts are separated can be quickly and smoothly led into the grid arc extinguishing chamber to be extinguished.

However, the existing arc striking device is large in size, occupies space and has poor arc striking effect, so that the residence time of an electric arc between a moving contact and a static contact is too long, and the contact is easily burnt.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides a contact wrapping type arc striking structure and a contact mechanism.

The technical scheme adopted by the invention is as follows: the utility model provides a contact parcel formula striking structure, includes the contact board and installs the contact on the contact board, be fixed with the striking board identical rather than the structure on the contact board, the striking board adopts ferromagnetic material, just be formed with the parcel mouth on the striking board, the contact corresponds the setting and is inboard at parcel mouth.

The contact plate straight plate structure, the contact sets up the both ends position at the contact plate upper surface, the run-on plate is the straight plate structure with the contact plate adaptation to install at the upper surface of contact plate, just the run-on plate both ends are formed with the parcel mouth with contact looks adaptation.

And bent arc striking angles extend outwards from the periphery of the arc striking plate.

The contact plate is of a U-shaped structure and comprises a bottom plate part, a connecting part and a contact mounting part, and the contact is mounted on the contact mounting part;

the arc striking plate corresponds and is U type structure, the arc striking plate is installed on the bottom plate portion of touch board, and is formed with the parcel mouth with connecting portion, the adaptation of contact installation portion on the arc striking plate, the connecting portion and the setting of contact installation portion of touch board are in the parcel mouth.

And a bent arc striking angle extends outwards from the end part of the arc striking plate.

A contact mechanism comprises a movable contact component and a fixed contact component which are correspondingly arranged, wherein the movable contact component comprises a movable contact plate, a movable contact and a first arc striking plate; the contact plate is of a straight plate structure, the contacts are arranged at two ends of the upper surface of the contact plate, the first arc striking plate is of a straight plate structure matched with the movable contact plate and is arranged on the upper surface of the movable contact plate, the first arc striking plate is made of ferromagnetic materials, a first wrapping opening matched with the contacts is formed at two ends of the first arc striking plate, and the movable contact is located on the inner side of the first wrapping opening; the static contact component comprises a static contact plate, a static contact and a second arc striking plate; the static touch panel is U type structure, including bottom plate portion, connecting portion and contact installation department, the static contact is installed on the contact installation department, the correspondence of second run-on plate is U type structure, the second run-on plate is installed on the bottom plate portion of static touch panel, and is formed with the second package mouth with connecting portion, the adaptation of contact installation department on the second run-on plate, the connecting portion and the contact installation department setting of static touch panel are at the second package mouthful inboard.

And bent first arc ignition angles extend outwards from the periphery of the first arc ignition plate.

And a bent second arc ignition angle extends outwards from the end part of the second arc ignition plate.

The invention has the beneficial effects that: scheme more than adopting, set up the contact at parcel mouthful inboard, thereby realize the striking board to the parcel of contact, make the contact all have magnetic field force's protection all around, can push electric arc away under the magnetic field effect, thereby the protection contact alleviates the electric arc injury, the striking board is identical with the structure of contact plate simultaneously, can guarantee that the striking board is kept level with the contact angle as far as possible, thereby avoid electric arc bend to remove, can let electric arc along striking board smooth movement, thereby introduce arc extinguishing device to electric arc fast, effectively improve the electrified life of the disconnected index of circuit breaker and contact.

Drawings

Fig. 1 is a schematic structural diagram of a contact mechanism according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a movable contact assembly according to an embodiment of the present invention.

Fig. 3 is an exploded schematic view of a movable contact assembly according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a static contact component according to an embodiment of the present invention.

Fig. 5 is an exploded schematic view of a static contact assembly according to an embodiment of the invention.

Detailed Description

The embodiments of the invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1, a contact mechanism includes a movable contact component 10 and a stationary contact component 20, which are correspondingly arranged, and is a bridge-type double-contact structure.

As shown in fig. 2-3, the movable contact assembly 10 includes a movable contact plate 1, a movable contact 2, and a first arc striking plate 3; the contact board 1 is a straight board structure, the contacts 2 are arranged at two ends of the upper surface of the contact board 1, the first arc striking board 3 is a straight board structure matched with the movable contact board 1 and is arranged on the upper surface of the movable contact board 1, the first arc striking board 3 is made of ferromagnetic materials, first wrapping ports 31 matched with the contacts 2 are formed at two ends of the first arc striking board 3, the movable contact 2 is located on the inner side of the first wrapping ports 31, and first arc striking angles 32 which are bent are outwards extended from the periphery of the first arc striking board 3.

The static contact component 20 comprises a static contact plate 4, a static contact 5 and a second arc striking plate 6; the static contact plate 4 is a U-shaped structure and comprises a bottom plate part 41, a connecting part 42 and a contact mounting part 43, the static contact 5 is mounted on the contact mounting part 43, the second arc striking plate 6 is correspondingly of a U-shaped structure, the second arc striking plate 6 is mounted on the bottom plate part 41 of the static contact plate 4, a second wrapping opening 61 matched with the connecting part 42 and the contact mounting part 43 is formed in the second arc striking plate 6, the connecting part 42 and the contact mounting part 43 of the static contact plate 4 are arranged on the inner side of the second wrapping opening 61, and an arc striking angle 62 for bending is outwards extended from the end part of the first arc striking plate 6.

In above-mentioned movable contact subassembly and quiet contact subassembly, it is inboard all with the parcel mouth that the contact set up at the run-on plate, thereby realize the parcel of run-on plate to the contact, make the contact all have magnetic field force's protection all around, can push electric arc open under the magnetic field effect, thereby protection contact alleviates the electric arc injury, the run-on plate is identical with the structure of contact plate simultaneously, can guarantee that the run-on plate is equal with the contact angle as far as possible, thereby avoid electric arc bend to remove, can let electric arc along run-on plate smooth movement, thereby introduce disconnected arc extinguishing device to electric arc fast, effectively improve the electrified life of the index of circuit breaker and contact.

It should be noted that the wrapping opening is an opening which is continuous and closed around on the arc striking plate, and a magnetic field capable of protecting the contact is formed through a closed annular structure of the opening, as shown in fig. 2, the arc striking plate is arranged on one side of the contact plate where the contact is installed, and the wrapping opening is correspondingly hollowed according to the shape of the contact, so that the contact is directly and completely enclosed inside the wrapping opening, or as shown in fig. 4, the arc striking plate is arranged on the other side of the contact plate where the contact is installed, and the wrapping opening is correspondingly hollowed according to the shape of the contact plate, and is enclosed along the edge of the contact plate where the contact is installed.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.