CN114256033B - Electric leakage protection electricity taking structure for circuit breaker and circuit breaker - Google Patents
Electric leakage protection electricity taking structure for circuit breaker and circuit breaker Download PDFInfo
- Publication number
- CN114256033B CN114256033B CN202111662115.3A CN202111662115A CN114256033B CN 114256033 B CN114256033 B CN 114256033B CN 202111662115 A CN202111662115 A CN 202111662115A CN 114256033 B CN114256033 B CN 114256033B
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- Prior art keywords
- contact
- handle
- circuit breaker
- rotating part
- electricity taking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective 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
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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Abstract
The invention discloses a leakage protection electricity taking structure for a circuit breaker and the circuit breaker, and the leakage protection electricity taking structure comprises a handle spring (1) arranged in a handle, wherein one end of the handle spring (1) is connected with a circuit board (2), the other end of the handle spring (1) extends to the outer side of the handle and is provided with a rotating part (3), a first electrifying contact (4) and a first disconnecting contact (5) are respectively arranged on the rotating part (3), one side of the rotating part (3) is provided with an electricity taking part (6), and the outer side of the electricity taking part (6) is connected with an L-pole wiring board. According to the invention, through optimizing the electricity taking structure, the disconnection time of the electricity taking position is later than that of the moving contact and the static contact, and the high-temperature carbonization of the electricity taking position at the electrified contact is avoided, so that the electricity taking structure has the characteristics of good electricity taking stability and long service life.
Description
Technical Field
The invention relates to a breaker power taking structure, in particular to a leakage protection power taking structure for a breaker.
Background
In the traditional circuit breaker, a circuit board is directly connected with an L-pole wiring board through a wire, and when the circuit board detects the problem of electric leakage, an electromagnetic mechanism is driven to drive a release to act so as to disconnect a moving contact and a static contact, so that the electric leakage protection of the circuit breaker is realized; meanwhile, when the breaker trips, the power supply of the circuit board is cut off, so that the release is disconnected therewith. However, when wiring, an installer often connects the wire inlet and outlet ends in a reverse manner, namely, an external line is connected from the wire outlet end, and an internal line is connected from the wire inlet end, so that when the tripper is opened by leakage current through a circuit board, the tripper cannot be disconnected along with the tripping of the circuit breaker, but is continuously electrified to work until the tripper is burnt out, and the service life of the tripper is greatly shortened; meanwhile, the circuit board is in a continuous power-on state, so that large loss is caused.
In order to solve the problem, the current circuit breaker is additionally provided with a power taking mechanism between the L pole and the circuit board, so that the circuit breaker can be driven to be disconnected together by the disconnection action of the circuit breaker, and the circuit board is powered off. For example, in patent 202021880008.9 "electricity getting mechanism for circuit breaker", the action of the actuator can drive the moving contact spring and the electricity getting spring to separate from each other by arranging the electricity getting mechanism between the two actuators, so as to disconnect the circuit board. Although the structure can realize the disconnection action of the circuit board, in the actual use process, because two contacts can instantly release a large amount of electric arcs and generate sparks when the circuit is disconnected, the contact position can reach 6000 ℃ in a short time. The defects cause that the contact position of the power taking mechanism generates high-temperature carbonization due to multiple times of disconnection of the circuit breaker, thereby affecting the power connection stability and the leakage protection effect of the circuit board. Aiming at the problem, the current manufacturers solve the problem that the line diameter of the power taking line is increased or a material with better high temperature resistance is adopted, but the mode can only relieve the stability problem of the mechanism in a limited way, and the circuit breaker still generates a carbonization phenomenon after being used for a long time and causes the failure of the power taking line.
Therefore, the current breaker power-taking structure has the problems of poor power-taking stability and short service life.
Disclosure of Invention
The invention aims to provide a leakage protection electricity taking structure for a circuit breaker and the circuit breaker. It has the characteristics of good power taking stability and long service life.
The technical scheme of the invention is as follows: the utility model provides a circuit breaker is with electric leakage protection structure of getting, is including setting up the handle spring in the handle, the one end connecting line board of handle spring, and the other end of handle spring extends to the handle outside and is equipped with rotation portion, is equipped with first circular telegram contact and first disconnection contact in the rotation portion respectively, and one side of rotation portion is equipped with the portion of getting electricity, and the L utmost point wiring board is connected in the outside of the portion of getting electricity.
In the leakage protection electricity taking structure for the circuit breaker, the electricity taking part is respectively provided with a second on contact and a second off contact, and the second on contact and the second off contact are arranged in a staggered manner; when the circuit breaker is communicated, the second electrifying contact of the electrifying part and the first electrifying contact of the rotating part are attached to each other, and when the circuit breaker is disconnected, the second disconnecting contact of the electrifying part and the first disconnecting contact of the rotating part are separated from each other.
In the electric leakage protection electricity taking structure for the circuit breaker, the electricity taking part is an elastic sheet, an inclined part which is inclined towards the direction of the rotating part is arranged on the elastic sheet, a protruding part is arranged at one end of the inclined part, the second electrifying contact is located on the protruding part, and the second disconnecting contact is located on the inclined part.
In the electric leakage protection power taking structure for the circuit breaker, the rotating portion is arc-shaped, the first power-on contact and the first disconnection contact are respectively arranged at two ends of the rotating portion, the rotating portion is provided with the extrusion portion at one end close to the first disconnection contact, and the first disconnection contact is located on the extrusion portion.
In the electric leakage protection electricity taking structure for the circuit breaker, the rotation direction of the handle when the circuit breaker is disconnected is A direction, the first electrified contact is located at the rotating part and close to the A direction to one end, and the first disconnected contact is located at the rotating part and far away from the A direction to one end.
The utility model provides an electric leakage protection gets circuit breaker of electric structure for circuit breaker, includes the circuit breaker casing, is equipped with circuit board, handle, the portion of getting electricity and the wiring board of the L utmost point in the circuit breaker casing respectively, and handle spring is connected to the handle in the handle, and one side of handle is connected with actuating mechanism, and the one end connecting line board of handle spring, the other end of handle spring and the portion of getting electricity laminate each other, the external connection L utmost point wiring board of the portion of getting electricity.
Compared with the prior art, the invention has the following characteristics:
(1) The circuit board is connected with electricity by matching the handle spring and the electricity taking part, so that the position of a disconnected contact of the electricity taking structure can be transferred to the position of the handle from the existing actuating mechanism, namely, the disconnection of the contact is realized by utilizing the opening of the handle after the circuit breaker is disconnected; the circuit breaker drives the actuating mechanism to act to disconnect the moving contact and the static contact by the tripper when in leakage protection, and then drives the handle to rotate to open the brake when the actuating mechanism finishes acting, so that the rotating brake-separating time of the handle is lagged by the disconnection time of the moving contact and the static contact by the matching linkage of the actuating mechanism, and the moving contact and the static contact can complete the release of electric arcs in the interval time, thereby reducing sparks generated when the rotating part and the power taking part are disconnected and greatly reducing the high-temperature carbonization possibility of the contact position;
(2) The rotating part and the electricity taking part formed by the elastic sheet are mutually attached to achieve electricity taking, and the electrifying contact and the disconnecting contact are respectively arranged at two ends of the rotating part, so that when the handle rotates from a closing state to a breaking state, the electricity taking part can be continuously attached to the rotating part, and when the rotating part rotates along with the handle to a first disconnecting contact at the other end is attached to the electricity taking part, the electricity taking part and the first disconnecting contact can be converted from the attaching state to be separated, so that the interval time between the disconnection of a driven contact and a static contact to the rotating part and the disconnection of the electricity taking part is further prolonged by the rotation of the handle, and the release electric arc of the disconnected contact position during disconnection is further reduced;
(3) On the basis, the connecting structure of the rotating part and the electricity taking part is further optimized, so that the rotating part is connected with the electricity taking part through the first electrified contact at one end when electricity is taken, and the rotating part is separated from the electricity taking part through the first disconnected contact at the other end when the electricity is taken, namely, the electricity taking position and the disconnection position are mutually staggered, and the influence of the carbonization of the first disconnected contact on the electricity taking stability of the first electrified contact is avoided; similarly, the power taking part is connected with the rotating part through the bulge part when the power is taken, and is separated from the rotating part through the inclined part when the power is off, so that the influence of the carbonization of the inclined part on the power taking stability of the bulge part is avoided; under the cooperation, even if the electricity taking structure still generates electric arcs when being disconnected, the electric arcs can not influence the electricity taking stability of the rotating part and the electricity taking part after being released, and the service life of the electricity taking structure is further prolonged;
therefore, the invention has the characteristics of good power taking stability and long service life.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a rotating part and a power taking part during closing;
FIG. 3 is a schematic view of the rotating section and the power take-off section at the time of arc discharge;
FIG. 4 is a schematic structural diagram of the rotating part and the power-taking part during opening;
fig. 5 is a schematic diagram of the circuit breaker.
The labels in the figures are: 1-handle spring, 2-circuit board, 3-rotating part, 4-first power-on contact, 5-first disconnection contact, 6-power-taking part, 7-second power-on contact, 8-second disconnection contact, 9-breaker shell, 10-handle, 11-L pole wiring board, 12-actuator, 301-squeezing part, 601-tilting part, 602-protruding part.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. A leakage protection electricity taking structure for a circuit breaker is shown in figures 1-4 and comprises a handle spring 1 arranged in a handle, one end of the handle spring 1 is connected with a circuit board 2, the other end of the handle spring 1 extends to the outer side of the handle and is provided with a rotating portion 3, a first electrifying contact 4 and a first disconnecting contact 5 are respectively arranged on the rotating portion 3, an electricity taking portion 6 is arranged on one side of the rotating portion 3, and the outer side of the electricity taking portion 6 is connected with an L-pole wiring board.
The power taking part 6 is respectively provided with a second electrifying contact 7 and a second disconnecting contact 8, and the second electrifying contact 7 and the second disconnecting contact 8 are arranged in a staggered manner; when the circuit breaker is connected, the second conductive contact 7 of the power taking portion 6 and the first conductive contact 4 of the rotating portion 3 are attached to each other, and when the circuit breaker is disconnected, the second disconnection contact 8 of the power taking portion 6 and the first disconnection contact 5 of the rotating portion 3 are separated from each other.
The electricity taking portion 6 is an elastic piece, an inclined portion 601 which is obliquely arranged towards the direction of the rotating portion 3 is arranged on the elastic piece, an arc-shaped protruding portion 602 is arranged at one end of the inclined portion 601, the second electrifying contact 7 is located on the protruding portion 602, and the second disconnecting contact 8 is located on the inclined portion 601.
The shape of the rotating part 3 is circular arc, the first power contact 4 and the first disconnection contact 5 are respectively arranged at two ends of the rotating part 3, a pressing part 301 is arranged at one end of the rotating part 3 close to the first disconnection contact 5, and the first disconnection contact 5 is positioned on the pressing part 301.
The rotation direction of the handle when the circuit breaker is disconnected is taken as the direction A, the first electrified contact 4 is positioned at one end, close to the direction A, of the rotation part 3, and the first disconnecting contact 5 is positioned at one end, far away from the direction A, of the rotation part 3.
A circuit breaker based on electric leakage protection gets electric structure for circuit breaker, constitute as shown in fig. 1 and 5, including circuit breaker casing 9, be equipped with circuit board 2, handle 10 in the circuit breaker casing 9 respectively, get electric portion 6 and L utmost point wiring board 11, handle 10 in-connection handle spring 1, one side of handle 10 is connected with actuating mechanism 12, handle spring 1's one end link circuit board 2, handle spring 1's the other end with get electric portion 6 and laminate each other, get electric portion 6's external connection L utmost point wiring board 11.
The working principle of the invention is as follows: when the switch is switched on, one end of the power taking part 6 is connected with the L pole wiring board through a lead, the other end of the power taking part 6 is attached to the rotating part 3 on the handle spring 1 through the protruding part 602, and meanwhile one end of the handle spring 1 is connected with the circuit board 2, so that the L pole wiring board is electrically connected with the circuit board 2, and the power taking effect is achieved. The power take-off unit 6 is pressed by the rotating unit 3 to be deformed in a closed state, and the second conductive contact 7 and the first conductive contact 4 are stably bonded to each other by the repulsive force of the elastic piece.
When the circuit board 2 detects an electric leakage state, the trigger release ejects the moving contact and the fixed contact to separate from each other and release electric arc, and meanwhile, the moving contact triggers the actuating mechanism 12 to act after being ejected, so that the handle 10 rotates from a closing state to an opening state. Handle 10 drives rotation portion 3 after rotating and rotates along A to, and the cooperation of the resilience force of portion 6 of getting electricity and the convex rotation portion 3 for rotation portion 3 and portion 6 of getting electricity continuously keep the laminating state at the separating brake in-process, until extrusion portion 301 rotate to with the laminating position of rake 601. When the rotating portion 3 is in this fitted position, subsequent rotation of the rotating portion 3 causes the rotating portion 3 and the power take-out portion 6 to separate from each other, thereby releasing an arc at the first and second opening contacts 5 and 8. Because the linkage action of the actuating mechanism 12 and the opening action of the handle 10 need to consume a certain time, the arc releasing time of the rotating part 3 and the electricity taking part 6 is later than the separating time of the movable contact and the static contact, and then the movable contact and the static contact can release most of arcs before the electricity taking structure is disconnected, namely the arc releasing amount of the rotating part 3 and the electricity taking part 6 is reduced when the rotating part and the electricity taking part are separated, and the problem of high-temperature carbonization of the disconnected contact position is solved. On the other hand, the position of the break contact of the power taking structure and the position of the power-on contact are arranged in a staggered mode, so that the carbonization problem of the break contact of the rotating part 3 and the power taking part 6 does not affect the power-on performance of the break contact, and the double protection effect can be realized, so that the working stability of the circuit breaker is greatly improved, and the service life of the circuit breaker is greatly prolonged.
Claims (3)
1. The utility model provides a circuit breaker is with electric leakage protection structure of getting, its characterized in that: the handle spring comprises a handle spring (1) arranged in a handle, one end of the handle spring (1) is connected with a circuit board (2), the other end of the handle spring (1) extends to the outer side of the handle and is provided with a rotating part (3), a first power-on contact (4) and a first power-off contact (5) are respectively arranged on the rotating part (3), one side of the rotating part (3) is provided with a power taking part (6), and the outer side of the power taking part (6) is connected with an L-pole wiring board;
the power taking part (6) is respectively provided with a second electrifying contact (7) and a second disconnecting contact (8), and the second electrifying contact (7) and the second disconnecting contact (8) are arranged in a staggered mode; when the circuit breaker is connected, a second electrifying contact (7) of the electrifying part (6) and a first electrifying contact (4) of the rotating part (3) are attached to each other, and when the circuit breaker is disconnected, a second disconnecting contact (8) of the electrifying part (6) and a first disconnecting contact (5) of the rotating part (3) are separated from each other;
the power taking part (6) is an elastic piece, an inclined part (601) which is inclined towards the direction of the rotating part (3) is arranged on the elastic piece, a protruding part (602) is arranged at one end of the inclined part (601), the second electrifying contact (7) is positioned on the protruding part (602), and the second disconnecting contact (8) is positioned on the inclined part (601);
the rotating part (3) is arc-shaped in appearance, the first power-on contact (4) and the first disconnection contact (5) are respectively arranged at two ends of the rotating part (3), the rotating part (3) is provided with an extrusion part (301) at one end close to the first disconnection contact (5), and the first disconnection contact (5) is positioned on the extrusion part (301).
2. The earth leakage protection electricity taking structure for the circuit breaker according to claim 1, characterized in that: the rotation direction of the handle when the circuit breaker is disconnected is used as the direction A, the first electrifying contact (4) is located at the position, close to the direction A, of the rotation part (3) to one end, and the first disconnecting contact (5) is located at the position, far away from the direction A, of the rotation part (3) to one end.
3. The breaker of the electric leakage protection electricity taking structure for the breaker according to any one of claims 1-2, characterized in that: including circuit breaker casing (9), be equipped with circuit board (2), handle (10) in circuit breaker casing (9) respectively, get electric portion (6) and L utmost point wiring board (11), handle spring (1) is connected in handle (10), and one side of handle (10) is connected with actuating mechanism (12), and circuit board (2) are connected to the one end of handle spring (1), and the other end of handle spring (1) is laminated each other with getting electric portion (6), gets electric portion (6) external connection L utmost point wiring board (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662115.3A CN114256033B (en) | 2021-12-31 | 2021-12-31 | Electric leakage protection electricity taking structure for circuit breaker and circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111662115.3A CN114256033B (en) | 2021-12-31 | 2021-12-31 | Electric leakage protection electricity taking structure for circuit breaker and circuit breaker |
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| CN114256033A CN114256033A (en) | 2022-03-29 |
| CN114256033B true CN114256033B (en) | 2022-11-01 |
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| CN202111662115.3A Active CN114256033B (en) | 2021-12-31 | 2021-12-31 | Electric leakage protection electricity taking structure for circuit breaker and circuit breaker |
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| CN113035661A (en) * | 2021-04-23 | 2021-06-25 | 浙江天正电气股份有限公司 | Earth leakage circuit breaker |
| CN113161203A (en) * | 2021-04-23 | 2021-07-23 | 浙江天正电气股份有限公司 | Electricity taking mechanism of residual current circuit breaker |
| CN216793580U (en) * | 2021-12-31 | 2022-06-21 | 美高电气科技有限公司 | Earth leakage protection electricity taking structure for circuit breaker and circuit breaker |
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| US8089282B2 (en) * | 2009-04-18 | 2012-01-03 | General Electric Company | Test assembly for a circuit breaker |
| CN111341612A (en) * | 2018-11-30 | 2020-06-26 | 浙江正泰电器股份有限公司 | Circuit breaker |
| CN213025998U (en) * | 2020-09-01 | 2021-04-20 | 美高电气科技有限公司 | Circuit breaker is with getting electric mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202796775U (en) * | 2012-09-17 | 2013-03-13 | 温州罗格朗电器有限公司 | Electricity fetching device of circuit board |
| WO2014167605A1 (en) * | 2013-04-11 | 2014-10-16 | パナソニック 株式会社 | Circuit switchgear and circuit breaker |
| CN107393771A (en) * | 2017-08-24 | 2017-11-24 | 乐清市也为电气有限公司 | A kind of experimental rig power taking structure of RCCB |
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| CN216793580U (en) * | 2021-12-31 | 2022-06-21 | 美高电气科技有限公司 | Earth leakage protection electricity taking structure for circuit breaker and circuit breaker |
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| CN114256033A (en) | 2022-03-29 |
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