CN110931320A - Breaker opening and closing device - Google Patents
Breaker opening and closing device Download PDFInfo
- Publication number
- CN110931320A CN110931320A CN201911122120.8A CN201911122120A CN110931320A CN 110931320 A CN110931320 A CN 110931320A CN 201911122120 A CN201911122120 A CN 201911122120A CN 110931320 A CN110931320 A CN 110931320A
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- CN
- China
- Prior art keywords
- closing
- cam
- rod
- shell
- wall
- 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.)
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Classifications
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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
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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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
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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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/505—Latching devices between operating and release mechanism
-
- 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
- H01H71/66—Power reset mechanisms
- H01H71/70—Power reset mechanisms actuated by electric motor
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a circuit breaker opening and closing device which comprises a shell, a static contact, a movable contact and a closing pull rod, wherein the static contact is arranged in the shell, the movable contact is arranged in the shell in a sliding mode, the closing pull rod is arranged in the shell in a rotating mode and extends out of the outer wall of the shell, a closing shaft is arranged in the shell in a rotating mode, a closing cam is fixed on the outer wall of the closing shaft, a cam rod is matched on the outer wall of the closing cam, the end portion of the movable contact is connected with the cam rod, and when the closing cam rotates to a working position, the movable contact and the static contact can be disconnected or connected through the movement of the cam rod. The invention can control the contact between the static contact and the movable contact by the matching of the closing cam and the cam rod, so that the miniature circuit breaker can be switched on and off, and the power assembly is utilized to drive the closing cam to rotate, so that the circuit breaker can be switched on stably, and the problem that an operating handle is easy to twist in the conventional circuit breaker is solved.
Description
Technical Field
The invention relates to the field of breaker opening and closing devices, in particular to a breaker opening and closing device.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. When the side operation type circuit breaker is operated, the force of the side operation type circuit breaker is unilateral thrust, so that the operation handle is easy to distort and deform, and the internal structure of the side operation type circuit breaker is easy to break after a long time.
Disclosure of Invention
In view of the above, the present invention is directed to a circuit breaker opening and closing device, which is used to solve all or one of the problems of the related art.
The invention provides a circuit breaker switching-on and switching-off device based on the above purpose, which comprises a shell, a static contact, a movable contact and a switching-on pull rod, wherein the static contact is arranged in the shell, the movable contact is arranged in the shell in a sliding manner, the switching-on pull rod is arranged in the shell in a rotating manner and extends out of the outer wall of the shell, a closing shaft is arranged in the shell in a rotating manner, a closing cam is fixed on the outer wall of the closing shaft, a cam rod is matched on the outer wall of the closing cam, the cam rod is arranged in the inner wall of the shell in a sliding manner, a first elastic piece is sleeved on the outer wall of the cam rod, the elastic force of the first elastic piece pushes the cam rod to move towards the outer wall of the closing cam, the end part of the movable contact is connected with the cam rod, a locking component and, the power assembly is used for driving the rotation of the closing cam, and when the closing cam rotates to the working position, the movable contact can be disconnected or connected with the static contact through the movement of the cam rod.
Optionally, the power assembly includes a driving motor, a driving gear is mounted on an output shaft of the driving motor, a driven gear is fixedly mounted on an outer wall of the closing shaft, and the driven gear is meshed with the driving gear.
Optionally, the locking assembly includes a locking arm, the locking arm is rotatably installed in the housing, a locking portion is disposed at one end of the locking arm, the locking portion is adapted to the closing cam, a first guide rod is disposed at the other end of the locking arm, a second elastic member is disposed at an outer side of the locking arm, the second elastic member is installed in the housing, an elastic force of the second elastic member pushes the locking portion to move toward the closing cam, a transmission rod is disposed above the locking arm, the transmission rod is installed in the housing by a rotatable connection manner, a first transmission groove is disposed at one end of the transmission rod, the first guide rod is slidably installed in the first transmission groove, a second guide rod is disposed at the other end of the transmission rod, a second transmission groove is disposed at an end of the closing pull rod, the second guide rod is slidably installed in the second transmission groove, and a positioning groove is, the closing mechanism is characterized in that a third elastic piece is arranged on the outer wall of the closing pull rod, the end of the third elastic piece is arranged in the shell, the elastic force of the third elastic piece drives the closing pull rod to move towards one side far away from the locking arm, a movable positioning arm is inserted in the positioning groove and is arranged in the shell in a rotating mode, a fourth elastic piece is arranged on the outer wall of the positioning arm, the elastic force of the fourth elastic piece pushes the positioning arm to move towards the positioning groove, a first electromagnetic device and a second electromagnetic device are further arranged in the shell, the first electromagnetic device is located on one side of the locking arm, the electromagnetic force of the first electromagnetic device can drive one side far away from the closing cam towards the locking portion to move, the second electromagnetic device is located on one side of the positioning arm, and the electromagnetic force of the second electromagnetic device can drive the positioning arm to move towards one side.
Optionally, the second elastic member is a torsion spring.
Optionally, the third elastic member is a tension spring.
Optionally, the fourth elastic member is an elastic sheet.
Optionally, a first magnetic attraction piece adapted to the first electromagnetic device is further disposed on an outer wall of the locking arm.
Optionally, a second magnetic attraction piece matched with the second electromagnetic device is further arranged on the outer wall of the positioning arm.
Has the advantages that:
the invention can control the contact between the static contact and the movable contact by the matching of the closing cam and the cam rod, so that the miniature circuit breaker can be switched on and off, and the power assembly is utilized to drive the closing cam to rotate, so that the circuit breaker can be switched on stably, and the problem that an operating handle is easy to twist in the conventional circuit breaker is solved.
Drawings
Fig. 1 is a schematic structural diagram of a circuit breaker opening and closing device according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a locking assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a positioning arm according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
As an embodiment, the present invention provides a circuit breaker opening and closing device, including a housing, a static contact, a movable contact, and a closing pull rod, wherein the static contact is installed in the housing, the movable contact is installed in the housing in a sliding manner, the closing pull rod is installed in the housing in a rotating manner and extends out of an outer wall of the housing, a closing shaft is installed in the housing in a rotating manner, a closing cam is fixed on the outer wall of the closing shaft, a cam rod is fitted on the outer wall of the closing cam, the cam rod is installed in the inner wall of the housing in a sliding manner, a first elastic member is fitted on the outer wall of the cam rod, the elastic force of the first elastic member pushes the cam rod to move towards the outer wall of the closing cam, an end of the movable contact is connected with the cam rod, a locking assembly and a power assembly are installed in the housing, the, the power assembly is used for driving the rotation of the closing cam, and when the closing cam rotates to the working position, the movable contact can be disconnected or connected with the static contact through the movement of the cam rod.
As shown in fig. 1 to 3, as an embodiment of the present invention, a circuit breaker switching device includes a housing 1, a static contact 2, a movable contact 3, and a switching pull rod 4, where the static contact 2 is installed in the housing 1, the static contact 2 is electrically connected to an input portion, the movable contact 3 is installed in the housing 1 in a sliding manner, the movable contact 3 is electrically connected to an output portion, the switching pull rod 4 is installed in the housing 1 in a rotating manner and extends out of an outer wall of the housing 1, a toggle block is installed on the switching pull rod 4, the toggle block is located outside the housing 1, a switching shaft 5 is installed in the housing 1 in a rotating manner, a closing cam 6 is fixed on the outer wall of the closing shaft 5, where the closing cam 6 has a high portion and a ground portion, a cam rod 7 is fitted on the outer wall of the closing cam 6, and the cam rod 7 is installed on the inner wall of the housing 1 in a sliding manner, the outer wall of the cam rod 7 is sleeved with a first elastic piece 8, the outer wall of the cam rod 7 is provided with a flange, the flange of the cam rod 7 is pushed by the elastic force of the first elastic piece 8 to move towards the outer wall of the closing cam 6, the end part of the movable contact 3 is fixedly connected with the cam rod 7, a locking assembly and a power assembly are arranged in the shell 1, the locking assembly is used for controlling the rotating position of the closing cam 6, the power assembly is used for driving the closing cam 6 to rotate, and when the closing cam 6 rotates to a working position, the movable contact 3 and the static contact 2 can be disconnected or connected through the movement of the cam rod 7. When the closing cam 6 rotates to the high position part, the movable contact 3 is in touch connection with the static contact 2; when the closing cam 6 rotates to the low position portion, the movable contact 3 is disconnected from the stationary contact 2.
Optionally, the power assembly includes a driving motor 9, a driving gear 10 is fixedly installed on an output shaft of the driving motor 9, a driven gear 11 is fixedly installed on an outer wall of the closing shaft 5, and the driven gear 11 is engaged with the driving gear 10. When the device is used, the driving motor 9 works, the output shaft of the driving motor 9 drives the driving gear 10 to rotate, the driving gear 10 drives the driven gear 11 to rotate, the driven gear 11 drives the closing shaft 5 to rotate, and the closing shaft 5 drives the closing cam 6 to rotate, so that the movement of the closing cam 6 is controlled.
Optionally, the locking assembly includes a locking arm 12, the locking arm 12 is rotatably installed in the housing 1, one end of the locking arm 12 is provided with a locking portion 12a, the locking portion 12a is adapted to the closing cam 6, when the locking portion 12a is attached to the outer wall of the closing cam 6, the locking portion 12a can fix the rotating position of the closing cam 6, the other end of the locking arm 12 is provided with a first guide rod 13, the outer side of the locking arm 12 is provided with a second elastic member 14, the second elastic member 14 is installed in the housing 1, the elastic force of the second elastic member 14 pushes the locking portion 12a to move towards the closing cam 6, a transmission rod 15 is arranged above the locking arm 12, the transmission rod 15 is installed above the interior of the housing 1 by a rotatable connection, one end of the transmission rod 15 is provided with a first transmission groove 15a, and the first guide rod 13 is slidably installed in the first transmission groove 15, the first guide rod 13 can slide along a first transmission groove 15a, the other end of the transmission rod 15 is provided with a second guide rod 16, the end of the closing pull rod 4 is provided with a second transmission groove 16a, the second guide rod 16 is slidably arranged in the second transmission groove 16a, the second guide rod 16 can slide along the second transmission groove 16a, one end of the closing pull rod 4 is provided with a positioning groove 4a, the outer wall of the closing pull rod 4 is provided with a third elastic piece 17, the end of the third elastic piece 17 is arranged in the shell 1, the elastic force of the third elastic piece 17 drives the closing pull rod 4 to move towards one side far away from the locking arm 12, a movable positioning arm 18 is inserted in the positioning groove 4a, the positioning arm 18 is provided with a positioning insertion block 19 matched with the positioning groove 4a, the positioning insertion block 19 can be inserted in the closing positioning groove 4a, and the positioning arm 18 is rotatably arranged in the shell 1, the outer wall of the positioning arm 18 is provided with a fourth elastic element 20, the elastic force of the fourth elastic element 20 pushes the positioning arm 18 to move towards the positioning groove 4a, the housing 1 is further provided with a first electromagnetic device 21 and a second electromagnetic device 22, the first electromagnetic device 21 is located on the right side of the locking arm 12, the electromagnetic force of the first electromagnetic device 21 can drive the locking portion 12a to move towards one side far away from the closing cam 6, the second electromagnetic device 22 is located above the positioning arm 18, and the electromagnetic force of the second electromagnetic device 22 can drive the positioning arm 18 to move towards one side far away from the positioning groove 4 a.
Further, the second elastic element 14 is a torsion spring, the torsion spring is sleeved in the housing 1, one end of the torsion spring is fixed in the housing 1, and the other end of the torsion spring contacts the locking arm 12, so as to push the locking arm 12 to rotate.
Further, the third elastic member 17 is a tension spring, one end of the tension spring is fixed in the housing 1, and the other end of the tension spring is fixed on the closing pull rod 4, so that the closing pull rod 4 is pulled to rotate.
Further, the fourth elastic element 20 is an elastic piece fixed in the housing 1, and an end of the elastic piece contacts the positioning arm 18, so as to push the positioning arm 18 to rotate.
Further, a first magnetic attraction piece 23 adapted to the first electromagnetic device 21 is further disposed on an outer wall of the locking arm 12. The outer wall of the positioning arm 18 is further provided with a second magnetic attraction piece 24 adapted to the second electromagnetic device 22. The first magnetic attraction piece 23 and the second magnetic attraction piece 24 can be made of ferromagnetic material.
Optionally, the first elastic element 8 is a compression spring, and the compression spring is sleeved on the outer wall of the cam rod 7.
When the circuit breaker needs to be switched on, an operator pulls the switching-on pull rod 4 to rotate, the switching-on pull rod 4 drives the transmission rod 15 to rotate, the transmission rod 15 drives the locking arm 12 to rotate, the locking part 12a is separated from the closing cam 6, meanwhile, the driving motor 9 works, an output shaft of the driving motor 9 drives the driving gear 10 to rotate, the driving gear 10 drives the driven gear 11 to rotate, the driven gear 11 drives the closing shaft 5 to rotate, the closing shaft 5 drives the closing cam 6 to rotate, the closing cam 6 drives the cam rod 7 to move, and the cam rod 7 drives the movable contact 3 to move until the movable working position of the movable contact 3 is electrically connected with the static contact 2; when the breaker needs to be disconnected, an operator pulls the closing pull rod 4 to rotate reversely, and drives the motor 9 to work reversely in the same way until the movable contact 3 is separated from the static contact 2, so that the movable contact is disconnected; when the circuit breaker needs to be automatically opened, the first electromagnetic device 21 and the second electromagnetic device 22 operate, the electromagnetic force of the first electromagnetic device 21 drives the side, far from the closing cam 6, of the locking portion 12a to move, the electromagnetic force of the second electromagnetic device 22 drives the positioning arm 18 to move towards the side, far from the positioning groove 4a, and similarly, the driving motor 9 operates in the reverse direction until the movable contact 3 is separated from the static contact 2, so that the movable contact is disconnected.
According to the invention, the closing cam 6 is matched with the cam rod 7 to control the static contact 2 to be contacted with the movable contact 3, so that the miniature circuit breaker can be switched on and off, and the power assembly is utilized to drive the closing cam to rotate, so that the circuit breaker can be switched on stably, and the problem that an operating handle is easy to twist in the conventional circuit breaker is solved.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
Claims (8)
1. A circuit breaker opening and closing device comprises a shell, a static contact, a movable contact and a closing pull rod, wherein the static contact is arranged in the shell, the movable contact is arranged in the shell in a sliding mode, the closing pull rod is arranged in the shell in a rotating mode and extends out of the outer wall of the shell, the circuit breaker opening and closing device is characterized in that a closing shaft is arranged in the shell in a rotating mode, a closing cam is fixed on the outer wall of the closing shaft, a cam rod is matched on the outer wall of the closing cam and is arranged on the inner wall of the shell in a sliding mode, a first elastic piece is sleeved on the outer wall of the cam rod, the elastic force of the first elastic piece pushes the cam rod to move towards the outer wall of the closing cam, the end portion of the movable contact is connected with the cam rod, a locking assembly and a power assembly are arranged in the shell, the locking assembly is used for controlling the, when the closing cam is rotated to the working position, the movable contact can be disconnected or connected with the static contact through the movement of the cam rod.
2. The circuit breaker opening and closing device according to claim 1, wherein the power assembly includes a driving motor, a driving gear is mounted on an output shaft of the driving motor, a driven gear is fixedly mounted on an outer wall of the closing shaft, and the driven gear is meshed with the driving gear.
3. The circuit breaker opening and closing device according to claim 1, wherein the locking assembly includes a locking arm rotatably installed in the housing, one end of the locking arm is provided with a locking portion adapted to the closing cam, the other end of the locking arm is provided with a first guide rod, a second elastic member is installed outside the locking arm, the second elastic member is installed in the housing, an elastic force of the second elastic member urges the locking portion to move toward the closing cam, a transmission rod is installed above the locking arm, the transmission rod is installed in the housing by being rotatably connected, one end of the transmission rod is provided with a first transmission groove, the first guide rod is slidably installed in the first transmission groove, the other end of the transmission rod is provided with a second guide rod, and an end portion of the closing pull rod is provided with a second transmission groove, the second guide rod is arranged in the second transmission groove in a sliding manner, one end of the closing pull rod is provided with a positioning groove, a third elastic element is arranged on the outer wall of the closing pull rod, the end part of the third elastic element is arranged in the shell, the elastic force of the third elastic piece drives the closing pull rod to move towards one side far away from the locking arm, a movable positioning arm is inserted in the positioning groove, the positioning arm is rotatably arranged in the shell, a fourth elastic piece is arranged on the outer wall of the positioning arm, the elastic force of the fourth elastic piece pushes the positioning arm to move towards the positioning groove, the shell is also internally provided with a first electromagnetic device and a second electromagnetic device, the first electromagnetic device is positioned at one side of the locking arm, the electromagnetic force of the first electromagnetic device can drive the locking part to move towards one side far away from the closing cam, the second electromagnetic device is located one side of the positioning arm, and the electromagnetic force of the second electromagnetic device can drive the positioning arm to move towards the side away from the positioning groove.
4. The circuit breaker opening and closing device according to claim 3, wherein said second elastic member is a torsion spring.
5. The circuit breaker opening and closing device according to claim 3, wherein said third elastic member is a tension spring.
6. The circuit breaker opening and closing device according to claim 3, wherein said fourth elastic member is an elastic piece.
7. The circuit breaker switching-on and switching-off device according to claim 3, wherein a first magnetic attraction piece matched with the first electromagnetic device is further arranged on the outer wall of the locking arm.
8. The circuit breaker opening and closing device according to claim 3, wherein a second magnetic attraction piece matched with the second electromagnetic device is further arranged on the outer wall of the positioning arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122120.8A CN110931320B (en) | 2019-11-15 | 2019-11-15 | Breaker opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122120.8A CN110931320B (en) | 2019-11-15 | 2019-11-15 | Breaker opening and closing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110931320A true CN110931320A (en) | 2020-03-27 |
| CN110931320B CN110931320B (en) | 2021-11-16 |
Family
ID=69853135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911122120.8A Active CN110931320B (en) | 2019-11-15 | 2019-11-15 | Breaker opening and closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110931320B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120306610A1 (en) * | 2010-02-11 | 2012-12-06 | Shuo Feng | Circuit breaker closing/ opening actuating mechanism and driving device thereof |
| CN204029748U (en) * | 2014-07-16 | 2014-12-17 | 浙江天正电气股份有限公司 | A kind of electrically operated device for circuit breaker and miniature circuit breaker |
| CN106499615A (en) * | 2016-12-27 | 2017-03-15 | 北京中科三正电气有限公司 | The switch board of the manually operated mechanical device that there is fire pump star angle to start |
| CN107068503A (en) * | 2017-04-25 | 2017-08-18 | 浙江智美电气有限公司 | A kind of automatic division brake control device and its a kind of breaker |
-
2019
- 2019-11-15 CN CN201911122120.8A patent/CN110931320B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120306610A1 (en) * | 2010-02-11 | 2012-12-06 | Shuo Feng | Circuit breaker closing/ opening actuating mechanism and driving device thereof |
| CN204029748U (en) * | 2014-07-16 | 2014-12-17 | 浙江天正电气股份有限公司 | A kind of electrically operated device for circuit breaker and miniature circuit breaker |
| CN106499615A (en) * | 2016-12-27 | 2017-03-15 | 北京中科三正电气有限公司 | The switch board of the manually operated mechanical device that there is fire pump star angle to start |
| CN107068503A (en) * | 2017-04-25 | 2017-08-18 | 浙江智美电气有限公司 | A kind of automatic division brake control device and its a kind of breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110931320B (en) | 2021-11-16 |
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