CN116387108A - Better circuit breaker auxiliary device of withstand voltage performance - Google Patents
Better circuit breaker auxiliary device of withstand voltage performance Download PDFInfo
- Publication number
- CN116387108A CN116387108A CN202310357863.3A CN202310357863A CN116387108A CN 116387108 A CN116387108 A CN 116387108A CN 202310357863 A CN202310357863 A CN 202310357863A CN 116387108 A CN116387108 A CN 116387108A
- Authority
- CN
- China
- Prior art keywords
- contact
- shell
- auxiliary device
- circuit breaker
- moving contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000003068 static effect Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000011218 segmentation Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
- H01H73/04—Contacts
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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
- H01H71/10—Operating or release mechanisms
-
- 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
Abstract
The invention discloses a breaker auxiliary device with better voltage resistance, which comprises: a first housing; the movable contact mechanism is rotationally assembled on the first shell through a first rotating shaft and comprises an auxiliary contact, a first movable contact and an indicator, wherein the first movable contact is respectively abutted against the first conductive plate or the second conductive plate; the shunt contact mechanism is rotationally assembled on the first shell through a second rotating shaft and comprises a second moving contact, a static contact piece inserted on the first shell and a reset torsion spring sleeved on the second rotating shaft; the operation handle is rotationally assembled on the upper part of the first shell and comprises a handle, a rotating part, a connecting part and a protruding part matched with the second moving contact. The auxiliary device of the circuit breaker effectively increases the electric gap between the moving contact and the fixed contact through the combined work of the shunt contact mechanism and the moving contact mechanism, thereby improving the integral pressure resistance to be more than 1500V, and having better segmentation effect and very reliability.
Description
Technical Field
The invention relates to the technical field of electrical accessories, in particular to a circuit breaker auxiliary device with good voltage resistance.
Background
Electrical accessories are one of the most common electrical devices in circuit breaker auxiliary units. The auxiliary electric accessories are controlled to indicate the three states of breaking, closing and tripping of the breaker through the on/off switching of the contacts, and the alarm electric accessories send out alarm signals when the fault is tripped.
As shown in fig. 6, in the auxiliary device of the circuit breaker in the prior art, because the electrical gap between the moving contact and the fixed contact is smaller, a micro switch is adopted to carry out tripping alarm. The whole voltage resistance of the auxiliary device can only reach 1200V at maximum, and once the direct current passing through the circuit breaker auxiliary device is more than 60V, the micro switch cannot be normally disconnected, and certain potential safety hazards exist, so that the circuit breaker auxiliary device is inconvenient.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the problems, the invention provides the auxiliary device of the circuit breaker, which has the advantages of simple structure, strong voltage resistance and good tripping performance.
(II) technical scheme
The invention relates to a breaker auxiliary device with better voltage resistance, which comprises: the first shell is provided with a first rotating shaft, a second rotating shaft and at least two grooves in an inserted mode, the first shell is also provided with a limiting wall, and a first conducting plate and a second conducting plate are respectively inserted into the grooves; the movable contact mechanism is rotationally assembled on the first shell through a first rotating shaft and comprises an auxiliary contact, a first movable contact and an indicator, wherein the first movable contact is respectively abutted against the first conductive plate or the second conductive plate; the shunt contact mechanism is rotationally assembled on the first shell through a second rotating shaft and comprises a second moving contact, a static contact piece inserted on the first shell and a reset torsion spring sleeved on the second rotating shaft; the operation handle is rotationally assembled on the upper part of the first shell and comprises a handle, a rotating part, a connecting part and a protruding part matched with the second moving contact.
In the invention, the first moving contact is arranged between the first conductive plate and the second conductive plate.
In the invention, the connecting part is provided with a connecting hole, the connecting part is provided with a connecting rod through the connecting hole, and the other end of the connecting rod is connected with the movable contact mechanism.
In the invention, the connecting part is arranged at one side of the rotating part close to the moving contact.
In the invention, the second movable contact comprises a movable contact piece and a fixed contact piece which is integrally bent and formed, the movable contact piece is provided with a jack and a rotary groove matched with the second rotating shaft, one end of the reset torsion spring is connected with the jack, and the other end of the reset torsion spring is abutted against the limiting wall.
In the invention, the top of the movable contact is provided with the integrally bent limiting surface, and the movable contact extends outwards from one end of the limiting surface.
In the invention, the static contact is arranged above the limiting wall.
In the invention, the protruding part is arranged at one side of the rotating part close to the second moving contact.
In the invention, connecting terminals with ladder-shaped structures are respectively arranged on two sides of the first shell, a shunt release is arranged in the first shell, and the limiting wall is arranged above the shunt release.
(III) beneficial effects
Compared with the prior art, the invention has the beneficial effects that,
(1) The auxiliary device of the circuit breaker effectively increases the electric gap between the moving contact and the fixed contact through the combined work of the shunt contact mechanism and the moving contact mechanism, thereby improving the integral voltage resistance to be more than 1500V, and having better segmentation effect and very reliability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view showing an internal structure of a circuit breaker auxiliary apparatus in embodiment 1;
fig. 2 is a schematic diagram of the internal structure of the circuit breaker auxiliary device in embodiment 1 (omitting the shunt contact mechanism);
fig. 3 is a schematic overall structure of the circuit breaker auxiliary device in embodiment 1;
fig. 4 is a schematic perspective view of a second moving contact in embodiment 1;
fig. 5 is a schematic perspective view of the operating handle in embodiment 1;
fig. 6 is a schematic view illustrating an internal structure of a related art auxiliary device for a circuit breaker.
100. The shunt release comprises a first shell, 101, a groove, 102, a first rotating shaft, 103, a second rotating shaft, 104, a first conducting plate, 105, a second conducting plate, 106, a limiting wall, 107 and a shunt release;
200. a moving contact mechanism 201, a first moving contact 202, an auxiliary contact 203 and an indicator;
300. the shunt contact mechanism 302, a second movable contact, 3021, a movable contact piece, 3022, a connecting piece, 3023, a jack, 3024, a rotary groove, 303, a reset torsion spring, 304, a limiting surface, 305 and a static contact piece;
400. an operation handle 401, a grip, 402, a rotating part 403, a connecting part 4031, a connecting hole 404 and a protruding part;
500. a second housing.
Detailed Description
Possible implementations within the scope of the present disclosure may have fewer components, have other components not shown in the drawings, different components, differently arranged components, differently connected components, etc., than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising," "comprising," or "having" and the like means that elements or items preceding the word are meant to be encompassed by the element or item recited following the word and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected" and the like are not limited to the physical or mechanical connection or communication shown in the drawings, but may include connection or communication equivalent thereto, whether direct or indirect. "upper", "lower", "left", "right", "horizontal", "vertical", etc. are only used to indicate a relative positional relationship, which may be changed accordingly when the absolute position of the object to be described is changed.
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A circuit breaker assisting apparatus having a good withstand voltage performance according to an embodiment of the present application is described with reference to fig. 1 to 5.
The circuit breaker auxiliary device comprises a first shell 100 and a second shell 500 assembled with the first shell 100, wherein the first shell 100 is provided with a moving contact mechanism 200 and a shunt contact mechanism 300, the moving contact mechanism 200 is assembled in a rotating way through a first rotating shaft 102 inserted on the first shell 100, and the moving contact mechanism 200 comprises a first moving contact 201, an auxiliary contact 202 and an indicator 203.
The indicator 203 is rotatably mounted on the first housing 100 and moves along with the movement of the moving contact mechanism 200, the first housing 100 is further provided with a first conductive plate 104, a second conductive plate 105, and two grooves 101 for accommodating the first conductive plate 104 and the second conductive plate 105, and the grooves 101 are in an upward protruding annular convex wall structure, i.e. the center of the convex wall is downward recessed with the grooves 101 for accommodating the first conductive plate 104 or the second conductive plate 105 respectively.
The moving first moving contact 201 is abutted against the first conductive plate 104 or the second conductive plate 105, that is, the first moving contact 201 is located between the first conductive plate 104 and the second conductive plate 105 in the rotation range of the moving contact mechanism 200. When the auxiliary device of the circuit breaker is in a closing state, the front end of the first movable contact 201 is abutted with the first conductive plate 104; when the switch is in the off state, the back surface of the first movable contact 201 abuts against the second conductive plate 105.
An operation handle 400 is rotatably mounted on the upper portion of the first housing 100, and the operation handle 400 includes a grip 401 extending outward from the first housing 100, a rotating portion 402, a connection portion 403 disposed on a lower right side of the rotating portion 402, and a protruding portion 404 disposed on a lower left side of the rotating portion 402 for engaging the shunt contact mechanism 300.
The connecting portion 403 is provided with a connecting hole 4031 for connecting the operating handle 400 and a link (not shown) of the auxiliary contact 202, so as to realize linkage between the operating handle 400 and the moving contact mechanism 200. It should be noted that, the linkage of the moving contact and the operation handle 400 by the connecting rod is a common means in the prior art, so too much description of the working principle is not performed here.
The shunt contact mechanism 300 is rotatably assembled through a second rotating shaft 103 which is inserted and arranged on the first shell 100, and the shunt contact mechanism 300 comprises a second moving contact 302 sleeved with the second rotating shaft 103, a static contact piece 305 and a reset torsion spring 303 sleeved on the second rotating shaft 103.
Preferably, the stationary contact 305 is inserted above the limiting wall 106, and the second moving contact 302 is at the lower left side.
The second moving contact 302 includes a connecting piece 3022 and a moving contact piece 3021 that is integrally bent and extends leftwards, the connecting piece 3022 is provided with a jack 3023 for connecting the reset torsion spring 303 and a round hole, wherein, under the moving contact, the first housing 100 is further provided with a limiting wall 106 for abutting the reset torsion spring 303, and one end of the reset torsion spring 303 is inserted into the jack 3023, and the other end of the reset torsion spring 303 is abutted against the limiting wall 106.
A rotating groove 3024 is further provided between the slot and the circular hole, and the connecting piece 3022 is sleeved with the second rotating shaft 103 through the rotating groove 3024, that is, the second moving contact 302 is rotatably assembled with the second rotating shaft 103 through the rotating groove 3024.
The top of the connecting piece 3022 is provided with an integrally bent limiting surface 304, and the movable contact 3021 extends from the left end of the limiting surface 304 to the lower left and is located above the stationary contact 305.
When the operation handle 400 is switched on, the operation handle 400 rotates anticlockwise, the protruding portion 404 also rotates anticlockwise and abuts against the limiting surface 304, and when the operation handle is in a switched on state, the movable contact 3021 is in abutting fit with the protruding portion 404 to rotate anticlockwise and abut against the stationary contact 305, and at this time, the reset torsion spring 303 is in an energy storage state.
When the auxiliary device of the circuit breaker trips or breaks the gate, the operating handle 400 rotates clockwise to reset, the second moving contact 302 returns to the initial position under the action of the reset torsion spring 303, that is, two moving contacts are driven and controlled by one operating handle 400, and therefore, the operating handle 400 is arranged above the moving contact mechanism 200 and the shunt contact mechanism 300. It should be noted that, the reset of the moving contact mechanism 200 is performed by a tension spring (not shown in the drawings), and the technical solution belongs to a common means in the prior art, and the working principle thereof is not described herein.
The first housing 100 is further provided with a shunt release 107, and the limiting wall 106 is disposed above the shunt release 107. Four terminals are also provided in a stepped shape on the left and right sides of the first housing 100, respectively.
The shunt release 107 extends out of two wires, one of which is welded to the stationary contact 305, and the other of which is welded to the connection terminal. The first conductive plate 104 is connected with one conductive terminal through a wire, and the second conductive plate 105 is connected with the other conductive terminal through a wire, that is, the first conductive plate 104 and the second conductive plate 105 are respectively connected with different conductive terminals.
The above examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (9)
1. A circuit breaker auxiliary device with better voltage resistance,
characterized by comprising the following steps:
the device comprises a first shell (100), wherein a first rotating shaft (102), a second rotating shaft (103) and at least two grooves (101) are inserted into the first shell (100), a limiting wall (106) is further arranged on the first shell (100), and a first conductive plate (104) and a second conductive plate (105) are respectively inserted into the grooves (101);
the movable contact mechanism (200) is rotationally assembled on the first shell (100) through the first rotating shaft (102), and comprises an auxiliary contact (202), a first movable contact (201) and an indicator (203), wherein the first movable contact (201) is respectively abutted with the first conductive plate (104) or the second conductive plate (105);
the shunt contact mechanism (300) is rotationally assembled on the first shell (100) through a second rotating shaft (103) and comprises a second moving contact (302), a static contact piece inserted on the first shell (100) and a reset torsion spring (303) sleeved on the second rotating shaft (103);
an operation handle (400) is rotatably assembled on the upper part of the first housing (100), and the operation handle (400) comprises a grip (401), a rotating part (402), a connecting part (403) and a protruding part (404) matched with the second movable contact (302).
2. The better withstand voltage circuit breaker auxiliary device of claim 1, wherein the first moving contact (201) is disposed between the first conductive plate (104) and the second conductive plate (105).
3. The circuit breaker auxiliary device with better withstand voltage performance according to claim 1, wherein a connecting hole (4031) is provided on the connecting portion (403), and the connecting portion (403) is equipped with a connecting rod through the connecting hole (4031), and the other end of the connecting rod is connected with the moving contact mechanism (200).
4. A circuit breaker auxiliary device with better withstand voltage performance according to claim 3, characterized in that the connection part (403) is arranged at the side of the rotating part (402) close to the moving contact.
5. The circuit breaker auxiliary device with good voltage withstand performance according to claim 1, wherein the second moving contact (302) comprises a moving contact piece (3021) and a fixed contact piece formed by integral bending, a jack (3023) and a rotating groove (3024) matched with the second rotating shaft (103) are arranged on the moving contact piece (3021), one end of the reset torsion spring (303) is connected with the jack (3023), and the other end of the reset torsion spring is abutted to the limiting wall (106).
6. The circuit breaker auxiliary device with good voltage withstand performance according to claim 4, wherein the top of the movable contact (3021) is provided with a limiting surface (304) formed by integral bending, and the movable contact (3021) extends outwards from one end of the limiting surface (304).
7. The better withstand voltage circuit breaker auxiliary device of claim 1, wherein the stationary contact is disposed above the limit wall (106).
8. The circuit breaker auxiliary device with better withstand voltage performance according to claim 1, wherein the protruding portion (404) is provided on a side of the rotating portion (402) close to the second moving contact (302).
9. The circuit breaker auxiliary device with good voltage withstand performance according to claim 1, wherein connecting terminals with stepped structures are further arranged on two sides of the first shell respectively, a shunt release (107) is arranged in the first shell, and the limiting wall (106) is arranged above the shunt release (107).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310357863.3A CN116387108A (en) | 2023-04-06 | 2023-04-06 | Better circuit breaker auxiliary device of withstand voltage performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310357863.3A CN116387108A (en) | 2023-04-06 | 2023-04-06 | Better circuit breaker auxiliary device of withstand voltage performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116387108A true CN116387108A (en) | 2023-07-04 |
Family
ID=86968935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310357863.3A Pending CN116387108A (en) | 2023-04-06 | 2023-04-06 | Better circuit breaker auxiliary device of withstand voltage performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116387108A (en) |
-
2023
- 2023-04-06 CN CN202310357863.3A patent/CN116387108A/en active Pending
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