CN218602368U

CN218602368U - Static contact assembly

Info

Publication number: CN218602368U
Application number: CN202222623836.XU
Authority: CN
Inventors: 李强; 王婉璐; 李宽; 张先刚; 高铨; 刘德林
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-03-10
Anticipated expiration: 2032-09-30

Abstract

A static contact assembly, comprising: the static contact plate comprises a static contact plate (1), wherein a first static silver point group (3) is transversely arranged on a body (101) of the static contact plate (1), and a second static silver point (4) is arranged at a position, perpendicular to the transversely arranged first static silver point group (3), of one end of a head (102) extending out of the body (101) on the static contact plate (1). The structure of the static contact component strengthens the magnetic blowing force of electric arc under the condition of ensuring that the temperature rise requirement of the movable contact and the static contact is met, and improves the arc extinguishing efficiency when a circuit breaker product is opened.

Description

Static contact assembly

Technical Field

The utility model belongs to the technical field of low-voltage apparatus, specifically say so and relate to a static contact subassembly.

Background

The frame circuit breaker is one of the electrical components of the control circuit, plays a role in control and protection in the power system, and is widely used in many production processes and technical equipment. The frame type circuit breaker mainly comprises a conductive system, an arc extinguishing system, an operating mechanism and the like, wherein an arc extinguishing chamber is an important part in the arc extinguishing system of the circuit breaker.

The current-carrying density of the arc static silver point position of the static contact of the existing frame circuit breaker is small, the magnetic blowing force borne by electric arc during opening can be weakened, the effect that the electric arc enters an arc extinguish chamber from the generation is poor, the phenomenon of arc running or arc overflowing is generated, and the arc extinguishing efficiency during opening of a circuit breaker product is further reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at exactly being to the less defect that leads to electric arc to be difficult to get into the explosion chamber completely of the quiet silver point position current-carrying density of arc of above-mentioned current frame circuit breaker static contact, providing a static contact subassembly, having improved the structure of static contact, strengthened electric arc magnetism blowing power under the requirement of guaranteeing to satisfy the static contact temperature rise of moving, arc extinguishing efficiency when having improved the circuit breaker product and having opened the floodgate.

Technical scheme

In order to realize the technical purpose, the utility model provides a pair of static contact assembly, its characterized in that: the static contact device comprises a static contact plate, wherein a first static silver point group is transversely arranged on a body of the static contact plate, and a second static silver point is arranged at a position, perpendicular to the transversely arranged first static silver point group, of one end of a head part extending out of the body on the static contact plate.

Furthermore, the static contact plate is of a T-shaped structure, the first static silver point group is located on one side of the tail of the T-shaped structure and is transversely arranged, and the second static silver point group is located on the end side of the T-shaped structure in the vertical direction.

Furthermore, the total width of the second static silver point group is smaller than that of the first static silver point group, so that current flows through the static silver points with corresponding current carrying areas when the brake is opened.

Further, the first static silver point group is integrated or formed by a plurality of silver points.

Further, the second static silver point is integrated or formed by a plurality of silver points.

Furthermore, one side of the head of the static contact plate is connected with one end of the connecting plate, first static silver point groups are arranged on two sides of a straight line where the connecting plate is located on the static contact plate, and second static silver points are arranged on the static contact plate and located on the straight line where the connecting plate is located.

Further, the first static silver point group is located on the static contact plate and located on the side far away from the side connected with the connecting plate.

Furthermore, a boss is arranged at one end of the static contact plate, which is connected with the connecting plate, and a step is arranged on the boss and is used for connecting one end of the connecting plate.

Advantageous effects

The utility model provides a static contact subassembly has improved the structure of static contact, and the current carrying area is big, current density is little when first quiet silver point group position for the static touch panel, and the current carrying area when the contact is opened through the second silver point is little, and current density is big. The magnetic blowing force of the electric arc is enhanced under the condition of ensuring that the temperature rise requirements of the movable contact and the static contact are met, and the arc extinguishing efficiency of the circuit breaker during opening is improved.

Drawings

FIG. 1 is a perspective view of a fixed contact assembly in an embodiment of the present invention;

fig. 2 is a top view of a fixed contact assembly in an embodiment of the present invention;

fig. 3 is a left side view of a static contact assembly in an embodiment of the present invention;

fig. 4 is a rear view of a static contact assembly in an embodiment of the present invention;

FIG. 5 is a top view of a stationary contact plate according to an embodiment of the present invention;

FIG. 6 is a left side view of the stationary contact plate in the embodiment of the present invention;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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," "second," and "third" 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" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to specific embodiments and drawings.

Examples

As shown in fig. 1,2,3 and 4, a static contact assembly comprises a static contact plate 1, a first static silver point group 3 is transversely arranged on a body 101 of the static contact plate 1, and a second static silver point 4 is arranged at a position, perpendicular to the transversely arranged first static silver point group 3, of one end of a head 102 extending from the body 101 on the static contact plate 1. In this embodiment, the stationary contact plate 1 is a "T" type structure, the first stationary silver point group 3 is located on one side of the tail of the "T" type structure and is transversely arranged, and the second stationary silver point group 4 is located on the end side of the "T" type structure in the vertical direction. The total width of the second static silver point 4 is smaller than that of the first static silver point group 3, so that current flows through the static silver points with corresponding current carrying areas when the brake is opened. The first silver static point group 3 is integrated or formed by a plurality of silver points. The second silver static point 4 is integrated or formed by a plurality of silver points. In this embodiment, the first silver static point group 3 is an integrated type. The second silver static point 4 is integrated.

As shown in fig. 1, one side of the head of the static contact plate 1 is connected with one end of the connecting plate 2, the first static silver point group 3 is arranged on the two sides of the straight line where the connecting plate 2 is located on the static contact plate 1, and the second static silver point group 4 is arranged on the straight line where the connecting plate 2 is located on the static contact plate 1. The first static silver point group 3 is positioned on the static contact plate 1 and is positioned at one side far away from the connection with the connecting plate 2. As shown in fig. 5 and 6, a boss 1a is arranged at one end of the stationary contact plate 1 connected with the connecting plate 2, and a step 1a01 is arranged on the boss 1a and used for connecting one end of the connecting plate 2.

The working principle of the embodiment is as follows: the body 101 of the static contact plate 1 is transversely provided with a first static silver point group 3, and one end of the head part 102 extending out of the body 101 of the static contact plate 1 is provided with a second static silver point 4 at a position vertical to the transversely arranged first static silver point group 3. The total width of the second silver static point 4 is smaller than the total width of the first silver static point group 3, so that under the condition that the static contact is in a normal working state, the current passes through the first silver static point group, the current can be transferred from the first silver static point group to the second silver static point when the static contact is opened, the total width of the second silver static point in the static contact assembly is smaller than the total width of the first silver static point group, when the circuit breaker works, the current carrying area is large when the current passes through the first silver static point group, the current density is small, the product temperature rise requirement can be met, and the current is transferred to the second silver static point when the static contact is opened, the current carrying area is small, the current density is large, the magnetic blow-out force on the electric arc can be enhanced, the electric arc can better enter an arc extinguishing chamber when the static contact is opened, and the arc extinguishing efficiency is enhanced.

Particularly, in the present embodiment, the stationary contact plate 1 is in a "T" shape, and the first stationary silver point group 3 arranged transversely and the second stationary silver point group 4 arranged perpendicularly thereto preferably form a "T" shape. The T shape further enables the current density to be smaller when the current passes through the first silver point group, and the requirement of temperature rise can be met; when the current is transferred to the arc static silver point, the current density is increased from small to large, so that the current-carrying density on the static contact component is improved, and the magnetic blowing force of the arc generated by the arc when the arc is separated from the product is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A static contact subassembly which characterized in that: the device comprises a static contact plate (1), wherein a first static silver point group (3) is transversely arranged on a body (101) of the static contact plate (1), and a second static silver point (4) is arranged at a position, perpendicular to the transversely arranged first static silver point group (3), of one end of a head (102) extending out of the body (101) on the static contact plate (1).

2. A stationary contact assembly as claimed in claim 1, wherein: the static contact plate (1) is of a T-shaped structure, the first static silver point group (3) is located on one side of the tail of the T-shaped structure and is transversely arranged, and the second static silver point group (4) is located on the end side of the T-shaped structure in the vertical direction.

3. A stationary contact assembly as set forth in claim 1 wherein: the total width of the second static silver points (4) is smaller than that of the first static silver point group (3) so as to ensure that current flows through the static silver points with corresponding current carrying areas when the brake is opened.

4. A stationary contact assembly as claimed in claim 1, wherein: the first static silver point group (3) is integrated or formed by a plurality of silver points.

5. A stationary contact assembly as set forth in claim 1 wherein: the second static silver point (4) is integrated or formed by a plurality of silver points.

6. A stationary contact assembly as claimed in claim 1, wherein: one side of the head of the static contact plate (1) is connected with one end of the connecting plate (2), a first static silver point group (3) is arranged on the two sides of the straight line where the connecting plate (2) is located on the static contact plate (1), and a second static silver point (4) is arranged on the static contact plate (1) and located on the straight line where the connecting plate (2) is located.

7. A stationary contact assembly as claimed in claim 6, wherein: the first static silver point group (3) is positioned on the static contact plate (1) and is positioned at one side far away from the connection with the connecting plate (2).

8. A stationary contact assembly as claimed in claim 7, wherein: the static contact plate is characterized in that a boss (1 a) is arranged at one end, connected with the connecting plate (2), of the static contact plate (1), and a step (1 a 01) is arranged on the boss (1 a) and used for being connected with one end of the connecting plate (2).