CN111341615A - Special floating static contact assembly device structure - Google Patents

Special floating static contact assembly device structure Download PDF

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Publication number
CN111341615A
CN111341615A CN202010221114.4A CN202010221114A CN111341615A CN 111341615 A CN111341615 A CN 111341615A CN 202010221114 A CN202010221114 A CN 202010221114A CN 111341615 A CN111341615 A CN 111341615A
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CN
China
Prior art keywords
static contact
arc striking
striking
contact component
floating
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Granted
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CN202010221114.4A
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Chinese (zh)
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CN111341615B (en
Inventor
黄正乾
罗细刚
朱熔吾
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Shenzhen Taiyong Electric Co ltd
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Shenzhen Taiyong Electric Co ltd
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Priority to CN202010221114.4A priority Critical patent/CN111341615B/en
Publication of CN111341615A publication Critical patent/CN111341615A/en
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Publication of CN111341615B publication Critical patent/CN111341615B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02Details
    • H01H73/04Contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02Details
    • H01H73/18Means for extinguishing or suppressing arc

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

The invention discloses a special floating static contact component device structure which comprises a main static contact component, a clamping piece, a floating arc striking static contact component, a clamping piece fixing screw, a connecting screw, a limiting shaft, a positioning shaft, a torsion spring, a limiting screw and an arc striking piece, wherein the floating arc striking static contact component assembles the limiting shaft, the positioning shaft and the torsion spring into a component through the clamping piece, the component is fixed on the main static contact component through the clamping piece fixing screw and the limiting screw, and a copper braided wire on the floating arc striking static contact component is fixed on the main static contact component through the connecting screw to form equal potential; a waist-shaped hole is formed in the clamping piece, and the floating type arc striking fixed contact component floats up and down in the waist-shaped hole to increase the overtravel of the clamping piece, so that the floating type arc striking fixed contact component is beneficial to striking an arc in the connection or disconnection process, and the connection or disconnection capacity is improved. The structure of the invention can improve the connection or disconnection capability and protect the safety of the circuit, thereby improving the safety performance of the product.

Description

Special floating static contact assembly device structure
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a special floating type static contact assembly device structure.
Background
A circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition for a predetermined time, and is widely used in various fields. The circuit breaker generally comprises contact system, arc extinguishing system, operating device, release and shell etc. current low voltage circuit breaker, because of the current trend reason causes great electronic repulsion easily, is unfavorable for the contact to bear great short-term withstand current or short-term withstand current index is lower. Particularly, when a circuit breaker with a current limiting function generates a circuit short circuit, a moving contact and a static contact of the circuit breaker are separated in a very short time under the action of electric repulsion force and generate electric arcs, the electric repulsion force is rapidly reduced along with the increase of the separation distance between the moving contact and the static contact, and when the electric repulsion force is smaller than the reaction force of a contact spring, the moving contact is influenced by the pulling force of the moving contact spring in the separation process of the moving contact and the static contact, so that the moving contact and the static contact start to approach each other again and are likely to fall back and generate a coupling phenomenon with the static contact again.
The automatic change-over switch needs to have the capacity of bearing certain short-time withstand current, is generally used all the way for standby all the way, and when the electricity used for usual breaks down suddenly or has a power failure, the automatic change-over switch automatically puts into the stand-by power supply. For a common power supply and a standby power supply co-cavity PC-level automatic transfer switch, how to effectively extinguish arc, reduce burning loss of an electric arc generated when load current is cut off to a contact, and prevent a common standby power supply from short circuit is a very critical problem. In the big shell frame current product of automatic transfer switch in current market, floating striking static contact subassembly and main static contact subassembly formula structure as an organic whole, the design is complicated, leads to the assembling nature poor, is unfavorable for actual volume production, can not satisfy the market demand.
Disclosure of Invention
The invention aims to solve the technical problem existing in the background technology and provides a static contact component structure which is simple in structure and convenient to assemble, in particular to a special floating type static contact component device structure.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a special floating type static contact assembly device structure comprises a main static contact assembly, a clamping piece, a floating type arc striking static contact assembly, a clamping piece fixing screw, a connecting screw, a limiting shaft, a positioning shaft, a torsion spring, a limiting screw and an arc striking piece, wherein a groove cavity is formed in the main static contact assembly; the floating type arc striking static contact component is assembled and assembled with a limiting shaft, a positioning shaft and a torsion spring to form an integrated component through a clamping piece, the integrated component is fixed in a groove cavity on the main static contact component through a clamping piece fixing screw and a limiting screw, and a copper braided wire on the floating type arc striking static contact component is fixed on the main static contact component through a connecting screw to form an equipotential, so that the floating arc striking static contact component and the main static contact component are in an equipotential state; the clamping piece and the floating type arc striking static contact component are connected through a limiting shaft, a waist-shaped hole is formed in the front end of the clamping piece, the rear end of the clamping piece is provided with a through hole matched with the positioning shaft, the direction of the waist-shaped hole is the up-and-down moving direction of the floating type arc striking static contact component, the floating type arc striking static contact component can rotate around the positioning shaft in the main static contact component, and meanwhile, in the rotating motion process of the floating type arc striking static contact component, the torsion spring is compressed, reaction force is generated through the torsion spring, and the floating type arc striking static contact component is limited to axially slide along the positioning shaft through the limiting screw; the arc striking plate is arranged in a V-shaped structure, is arranged on the main static contact component and is positioned above the floating arc striking static contact component, and the center of the arc striking plate is overlapped with the center of the floating arc striking static contact component; through floating striking quiet contact subassembly is downthehole fluctuation of waist type in the clip to increase floating striking quiet contact subassembly's overtravel, make floating striking quiet contact subassembly does benefit to the striking at switch-on or breaking process, improves switch-on or breaking capacity.
Furthermore, the special floating type static contact component device structure of the invention is characterized in that two groove cavities are arranged in the main static contact component, two groups of integrated components are arranged, the two groups of integrated components are respectively fixed in the two groove cavities on the main static contact component through corresponding clamp fixing screws and limiting screws, copper braided wires on the two groups of floating type arc striking static contact components are respectively fixed on the main static contact component through corresponding connecting screws, two equipotentials are formed through the two groups of floating type arc striking static contact components, and the floating type arc striking static contact components and the main static contact component are in equipotentials.
Furthermore, the invention relates to a special floating type static contact component device structure, wherein the main static contact component further comprises a copper bar, a first main contact silver alloy and a second main contact silver alloy, the first main contact silver alloy and the second main contact silver alloy are both arranged on the copper bar, two second main contact silver alloys are arranged on the two ends of the first main contact silver alloy in a symmetrical mode, and two groove cavities are distributed in the main static contact component along the first main contact silver alloy in a symmetrical mode.
Furthermore, the special floating type static contact component device structure of the invention is characterized in that the arc striking plate is formed by mutually overlapping two arc striking plates with the same structure to form a stacked double-layer V-shaped structure, the opening direction of the arc striking plate faces to the front end of an arc striking static contact in the floating type arc striking static contact component, and the arc striking plate is arranged to be in the stacked double-layer V-shaped structure, so that the conductive area is increased by utilizing the skin effect of current on the surface layer of a conductor, and the arc striking is facilitated.
Furthermore, the invention relates to a special floating type static contact assembly device structure, wherein the torsion spring is an integrated structure formed by two torsion springs, the middle hole of the torsion spring is arranged on a positioning shaft connected with a clamp and a floating type striking arc static contact assembly, one end of the torsion spring is arranged on a limiting shaft connected with a waist-shaped hole on the clamp and a floating type striking arc static contact assembly hole, the other end of the torsion spring is propped against one side of a main static contact assembly, under the action of the torsion spring, the floating type striking arc static contact assembly always has an upward force, the floating type striking arc static contact assembly can float up and down through the waist-shaped hole, thereby increasing the overtravel of the floating type striking arc static contact assembly, improving the capability of the floating type striking arc static contact assembly for bearing short circuit current, and realizing that the floating type striking arc static contact assembly is beneficial to striking during the connection or disconnection, the switching-on or switching-off capacity is improved.
Compared with the prior art, the special floating type static contact component device structure has the beneficial effects that: the capacity of the contact for bearing short-circuit current is greatly improved by increasing the overtravel of the static contact assembly, the design of the double-floating type arc striking static contact assembly and the stacked double-layer structure of the arc striking sheets is utilized, the skin effect of current on the surface layer of a conductor is facilitated, the conductive area is increased, the arc striking is facilitated, the energy borne by the dynamic and static arc striking contact assembly during breaking can be dispersed, the service life of the floating type arc striking static contact assembly is prolonged, electric arc can be better led into the arc extinguish chamber, the electric arc is extinguished as soon as possible, the index is improved, the floating type arc striking static contact assembly facilitates the arc striking during the connection or breaking process, the connection or breaking capacity is improved, the safety of a circuit is protected, and the safety performance of a product is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 taken along line A-A;
FIG. 4 is an exploded view of the structure of the present invention;
FIG. 5 is a partial cross-sectional view of the first embodiment of the present invention;
FIG. 6 is a second partial cross-sectional view of the present invention;
FIG. 7 is an exploded view of the structure of FIG. 6;
FIG. 8 is a schematic view of the clip of the present invention;
fig. 9 is an exploded view of the floating type arc striking fixed contact assembly according to the present invention.
Shown in the figure: 1-main fixed contact assembly, 101-groove cavity, 102-copper bar, 103-first main contact silver alloy, 104-second main contact silver alloy, 2-clip, 201-kidney-shaped hole, 202-through hole, 3-floating type arc striking fixed contact assembly, 301-arc striking static contact, 302-arc striking static contact silver alloy, 303-arc isolating plate, 304-pin, 305-copper braided wire, 306-pressing plate, 4-clip fixing screw, 5-connecting screw, 6-limiting shaft, 7-positioning shaft, 8-torsion spring, 9-limiting screw and 10-arc striking plate.
Detailed Description
As shown in fig. 1 to 9, the special floating type static contact assembly device structure of the present invention includes a main static contact assembly 1, a clip 2, a floating type striking static contact assembly 3, a clip fixing screw 4, a connecting screw 5, a limiting shaft 6, a positioning shaft 7, a torsion spring 8, a limiting screw 9, and a striking plate 10, a groove cavity 101 is disposed in the main static contact assembly 1, the floating type striking static contact assembly 3 is composed of a striking static contact 301, a striking static contact silver alloy 302, an arc barrier 303, a pin 304, a copper braided wire 305, and a pressing plate 306, the arc barrier 303 is mounted at the front end of the striking static contact 301 through the pin 304, the striking static contact silver alloy 302 is disposed on the arc barrier 303, one end of the copper braided wire 305 is connected to the striking static contact 301, the pressing plate 306 is disposed at the other end of the copper braided wire 305, and is positioned at the rear end of the striking static contact 301; the floating type arc striking static contact component 3 is formed by assembling and assembling a limiting shaft 6, a positioning shaft 7 and a torsion spring 8 into an integrated component through a clamping piece 2, the integrated component is fixed in a groove cavity 101 on the main static contact component 1 through a clamping piece fixing screw 4 and a limiting screw 9, a copper braided wire 305 on the floating type arc striking static contact component 3 is fixed on the main static contact component 1 through a connecting screw 5 to form an equipotential, and the floating type arc striking static contact component 3 and the main static contact component 1 are in an equipotential state; the front end of the clamp-shaped part 2 connected with the floating type arc striking static contact component 3 through the limiting shaft 6 is provided with a waist-shaped hole 201, the rear end of the waist-shaped hole is provided with a through hole 202 matched with the positioning shaft 7, the direction of the waist-shaped hole 201 is the up-down moving direction of the floating type arc striking static contact component 3, the floating type arc striking static contact component 3 can rotate around the positioning shaft 7 in the main static contact component 1, and meanwhile, in the rotating process of the floating type arc striking static contact component 3, the torsion spring 8 is compressed, the torsion spring 8 generates a reaction force, and meanwhile, the floating type arc striking static contact component 3 is limited by the limiting screw 9 to slide axially along the positioning shaft 7; the arc striking plate 10 is arranged in a V-shaped structure, the arc striking plate 10 is installed on the main fixed contact component 1 and is positioned above the floating type arc striking static contact component 3, and the center of the arc striking plate 10 is overlapped with the center of the floating type arc striking static contact component 3; the floating type arc striking static contact component 3 floats up and down in the kidney-shaped hole 201 in the clamp part 2, so that the overtravel of the floating type arc striking static contact component 3 is increased, the floating type arc striking static contact component 3 is beneficial to striking an arc in the connection or disconnection process, and the connection or disconnection capacity is improved.
Further, according to the structure of the special floating type static contact assembly device, two groove cavities 101 are formed in the main static contact assembly 1, two groups of integrated assemblies are arranged, the two groups of integrated assemblies are fixed in the two groove cavities 101 in the main static contact assembly 1 through corresponding clamp fixing screws 4 and limiting screws 9 respectively, copper braided wires 305 on the two groups of floating type arc striking static contact assemblies 3 are fixed on the main static contact assembly 1 through corresponding connecting screws 5 respectively, and two equipotentials are formed through the two groups of floating type arc striking static contact assemblies 3, so that the floating arc striking static contact assemblies 3 and the main static contact assembly 1 are in equipotentials.
Further, the special floating type static contact assembly device structure of the present invention further includes a copper bar 102, a first main contact silver alloy 103 and a second main contact silver alloy 104, wherein the first main contact silver alloy 103 and the second main contact silver alloy 104 are both disposed on the copper bar 102, two second main contact silver alloys 104 are disposed on two ends of the first main contact silver alloy 103, and two groove cavities 101 are disposed in the main static contact assembly 1 along the first main contact silver alloy 103 in a symmetrical manner.
Further, according to the structure of the floating type static contact assembly device of the present invention, the arc striking plate 10 is formed by overlapping two arc striking plates 10 having the same structure to form a stacked type double-layer V-shaped structure, an opening direction of the arc striking plate 10 faces to a front end of the arc striking static contact 301 in the floating type arc striking static contact assembly 3, and the arc striking plate 10 is arranged in the stacked type double-layer V-shaped structure, so that a skin effect of current on a surface layer of a conductor is utilized to increase a conductive area, which is beneficial to arc striking.
Further, the structure of the special floating type static contact assembly device of the present invention is characterized in that the torsion spring 8 is an integrated structure formed by two torsion springs, the middle hole of the torsion spring 8 is installed on the positioning shaft 7 connected between the clamp 2 and the floating type striking static contact assembly 3, one end of the torsion spring 8 is installed on the limiting shaft 6 connected with the waist-shaped hole 201 on the clamp 2 and the floating type striking static contact assembly 3 in the hole, the other end of the torsion spring 8 is pressed against one side of the main static contact assembly 1, under the action of the torsion spring 8, the floating type striking static contact assembly 3 always has an upward force, the floating type striking static contact assembly 3 can float up and down through the waist-shaped hole 201, thereby increasing the over travel of the floating type striking static contact assembly 3, and improving the capability of the floating type striking static contact assembly 3 for bearing short circuit current, the floating arc striking static contact component 3 is beneficial to striking an arc in the switching-on or breaking process, and the switching-on or breaking capacity is improved.
In the actual use process, the floating type static contact component device structure provided by the invention has the following action principle: the floating type striking static contact component 3 assembles a limiting shaft 6, a positioning shaft 7 and a torsion spring 8 into a component through the clamping piece 2, the copper braided wire 305 on the floating type striking static contact component 3 is fixed on the main static contact component 1 by a clamp fixing screw 4 and a connecting screw 5, wherein the clamping piece 2 and the floating type arc striking fixed contact component 3 are arranged into a kidney-shaped hole 201 through a front end hole connected with the limiting shaft 6, the direction of the waist-shaped hole 201 is the up-down moving direction of the floating type striking arc static contact component 3, the floating type striking arc static contact component 3 rotates around the positioning shaft 7, force is generated by compressing the torsion spring 8, meanwhile, the floating striking static contact component 3 is limited to axially slide along the positioning shaft 7 through the limiting screw 9, and the limiting shaft 6 and the positioning shaft 7 are axially limited through the inner wall of the main static contact component 1 after assembly. When the moving contact component of the automatic transfer switching device is connected or disconnected, the two groups of floating striking static contact components 3 are limited through the waist-shaped holes 201 on the clamping piece 2, and the connection or disconnection synchronism can be kept.
In summary, with the floating type static contact assembly device structure provided by the invention, the overtravel of the relative motion of the floating type striking arc static contact assembly 3 and the striking arc moving contact assembly when the floating type striking arc static contact assembly 3 is matched is increased through the rotary motion of the floating type striking arc static contact assembly 3, and meanwhile, the torsional spring 8 applies force, so that the contact pressure is increased, and the rigid-split speed is increased due to the increase of the overtravel; in order to solve the assembly problem of the floating type striking static contact component 2, the copper braided wire 305 and the connected floating type striking static contact are designed as an integral body, the floating type striking static contact component 3 is adopted, the copper braided wire 305 on the floating type striking static contact component 3 and the main static contact component 1 are fixed by the clamp fixing screw 4 during assembly, and the floating type striking static contact component 3 and the main static contact component 1 are ensured to be in the same potential; the torsion spring 8 is arranged between the clamping piece 2 and the floating type striking static contact component 3, so that the floating type striking static contact component 3 can float up and down, and the capacity of the contact for bearing short-circuit current is greatly improved by increasing the overtravel of the floating type striking static contact component 3; two floating arc striking static contact components 3 are adopted, so that the energy borne by the dynamic and static arc striking contact components during breaking can be dispersed, and the service life of the floating arc striking static contact components 3 is prolonged; in addition, because the arc striking plate 10 adopts a stacked double-layer structure, the conductive area is increased by utilizing the skin effect of current on the surface layer of the conductor, and the arc striking is facilitated, and by increasing the current-carrying capacity of the arc striking plate 10, when the arc striking static contact component and the arc striking moving contact component are disconnected, the arc can be better introduced into the arc extinguishing chamber by utilizing the skin effect of the current on the surface layer of the conductor, so that the arc is extinguished as soon as possible, the safety of a circuit is protected, and the safety performance of a product is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

Claims (5)

1. A special floating static contact subassembly device structure which characterized in that: the floating type arc striking static contact component comprises a main static contact component (1), a clamp component (2), a floating type arc striking static contact component (3), a clamp component fixing screw (4), a connecting screw (5), a limiting shaft (6), a positioning shaft (7), a torsion spring (8), a limiting screw (9) and an arc striking sheet (10), wherein a groove cavity (101) is formed in the main static contact component (1), the floating type arc striking static contact component (3) is composed of an arc striking static contact (301), an arc striking static contact silver alloy (302), an arc isolating plate (303), a pin (304), a copper braided wire (305) and a pressing sheet (306), the arc isolating plate (303) is installed at the front end of the arc striking static contact (301) through the pin (304), the arc striking static contact silver alloy (302) is arranged on the arc isolating plate (303), and one end of the copper braided wire (305) is connected with the arc striking static contact (301), the pressing sheet (306) is arranged at the other end of the copper braided wire (305) and is positioned at the rear end of the arc striking static contact (301); the floating type arc striking static contact component (3) is formed into an integrated component by assembling a limiting shaft (6), a positioning shaft (7) and a torsion spring (8) through a clamping piece (2), the integrated component is fixed in a groove cavity (101) on the main static contact component (1) through a clamping piece fixing screw (4) and a limiting screw (9), a copper braided wire (305) on the floating type arc striking static contact component (3) is fixed on the main static contact component (1) through a connecting screw (5), and an equipotential is formed, so that the floating type arc striking static contact component (3) and the main static contact component (1) are in an equipotential state; the clamping piece (2) and the floating type arc striking static contact component (3) are connected through a limiting shaft (6), a waist-shaped hole (201) is formed in the front end of the clamping piece, a through hole (202) matched with the positioning shaft (7) is formed in the rear end of the clamping piece, the direction of the waist-shaped hole (201) is the vertical moving direction of the floating type arc striking static contact component (3), the floating type arc striking static contact component (3) can rotate in the main static contact component (1) around the positioning shaft (7), and in the rotating process of the floating type arc striking static contact component (3), the torsion spring (8) is compressed, reaction force is generated through the torsion spring (8), and meanwhile, the floating type arc striking static contact component (3) is limited to axially slide along the positioning shaft (7) through the limiting screw (9); the arc striking plate (10) is arranged to be of a V-shaped structure, the arc striking plate (10) is installed on the main fixed contact component (1) and is positioned above the floating type arc striking fixed contact component (3), and the center of the arc striking plate is overlapped with the center of the floating type arc striking fixed contact component (3); through floating striking static contact subassembly (3) float from top to bottom in waist type hole (201) in clip (2) to increase the overtravel of floating striking static contact subassembly (3), make floating striking static contact subassembly (3) do benefit to the striking at switch-on or breaking process, improve switch-on or breaking capacity.
2. A special floating static contact assembly device structure as claimed in claim 1, characterized by: be equipped with two recess chambeies (101) in main quiet contact subassembly (1), the integral type subassembly is equipped with two sets ofly, and two sets of integral type subassemblies are fixed respectively through corresponding clamp piece fixed screw (4) and spacing screw (9) in two recess chambeies (101) on main quiet contact subassembly (1) to utilize corresponding connecting screw (5) to fix copper braided wire (305) on two sets of floating striking quiet contact subassembly (3) respectively on main quiet contact subassembly (1), form two equipotential through two sets of floating striking quiet contact subassembly (3), make floating striking quiet contact subassembly (3) are in the equipotential with main quiet contact subassembly (1).
3. A special floating static contact assembly device structure as claimed in claim 2, characterized in that: main stationary contact subassembly (1) is still including copper bar (102), first main contact silver alloy (103) and second main contact silver alloy (104) all set up in on copper bar (102), wherein second main contact silver alloy (104) are equipped with two, and two second main contact silver alloy (104) are the symmetric state distribution in the both ends of first main contact silver alloy (103), and two recess chambeies (101) are followed first main contact silver alloy (103) are the symmetric state distribution in main stationary contact subassembly (1).
4. A special floating static contact assembly device structure as claimed in claim 1, characterized by: the arc striking plate (10) is formed by mutually overlapping two arc striking plates (10) with the same structure to form a stacked double-layer V-shaped structure, the opening direction of each arc striking plate (10) faces to the front end of an arc striking static contact (301) in the floating arc striking static contact component (3), the arc striking plates (10) are arranged to be in the stacked double-layer V-shaped structure, and the conductive area is increased by utilizing the skin effect of current on the surface layer of a conductor, so that arc striking is facilitated.
5. A special floating static contact assembly device structure as claimed in claim 1, characterized by: the torsional spring (8) comprises an integrated structure formed by two torsional springs, the middle hole of the torsional spring (8) is arranged on a positioning shaft (7) connected with the clamp piece (2) and the floating type arc-leading static contact component (3), one end of the torsional spring (8) is arranged on a limit shaft (6) connected with the waist-shaped hole (201) on the clamp piece (2) and the floating type arc-leading static contact component (3) in the hole, the other end of the torsional spring (8) is propped in one side of the main static contact component (1), under the action of the torsional spring (8), the floating type arc-leading static contact component (3) always has an upward force, the floating type arc-leading static contact component (3) can float up and down through the waist-shaped hole (201), so that the over-travel of the floating type arc-leading static contact component (3) is increased, and the capacity of bearing short-circuit current of the floating type arc-leading static contact component (3) is improved, the floating arc striking fixed contact component (3) is beneficial to striking an arc in the connection or breaking process, and the connection or breaking capacity is improved.
CN202010221114.4A 2020-03-26 2020-03-26 Floating static contact assembly device structure Active CN111341615B (en)

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GB530197A (en) * 1938-06-30 1940-12-06 Westinghouse Electric Int Co Improvements in or relating to contact systems for electric circuit interrupters
US3721788A (en) * 1970-10-22 1973-03-20 Dorman Smith Switchgear Ltd Locator spring structure for contact assembly of high voltage electrical circuit breakers
EP0222690A1 (en) * 1985-11-13 1987-05-20 Siemens Aktiengesellschaft Contact arrangement for low-voltage circuit breakers with a movable insulating body
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