CN112151325B - Operating mechanism of back-up protector of surge protector - Google Patents
Operating mechanism of back-up protector of surge protector Download PDFInfo
- Publication number
- CN112151325B CN112151325B CN201910569563.5A CN201910569563A CN112151325B CN 112151325 B CN112151325 B CN 112151325B CN 201910569563 A CN201910569563 A CN 201910569563A CN 112151325 B CN112151325 B CN 112151325B
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- rod
- movable contact
- transmission rod
- protector
- operating mechanism
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- 230000001012 protector Effects 0.000 title claims abstract description 67
- 230000005540 biological transmission Effects 0.000 claims abstract description 74
- 230000003068 static effect Effects 0.000 claims abstract description 23
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to an operating mechanism of a back-up protector of a surge protector, wherein a transmission rod is connected between a rotating bracket and a movable contact rod, one end of the transmission rod is hinged with the rotating bracket through a connecting pin, the other end of the transmission rod is connected with a sliding pin, and the sliding pin is inserted into a driving waist hole of the movable contact rod; the connecting pin is sleeved with a torsion spring, and the torsion spring compresses the transmission rod on the rotating bracket clockwise; therefore, in the closing state, if the movable contact rod is pushed by the action of the electric repulsive force, the transmission rod can overcome the action of the torsion spring to rotate for a certain angle in a buffering way, the excessive impact force caused by the rotating support and the opening and closing operation mechanism can not cause the opening and closing of the opening and closing mechanism, and after the electric repulsive force disappears or reduces, the transmission rod can drive the movable contact rod to restore to the closing state with the static contact rod under the action of the torsion spring. Therefore, the operating mechanism of the back-up protector of the surge protector can improve the working reliability of the circuit breaker, and is simple in structure and convenient to use.
Description
Technical Field
The invention relates to an operating mechanism of a back-up protector of a surge protector, in particular to an operating mechanism of a back-up protector of a surge protector, which is applied to the fields of low-voltage circuit breakers and back-up protectors of surge protectors.
Background
In products such as low-voltage circuit breakers and surge protector backup protectors, the fluency of the movement of a transmission mechanism of a contact device is an important factor for judging whether a switch protector operating mechanism and a switch design are reasonable or not. The existing transmission rod directly links the movable contact rod with the rotary support, so that the disadvantage is that the movable contact rod is limited by the movement amplitude of the support, the rotation angle of the movable contact rod is small under the action of huge electric repulsive force, the action force of electric force on the mechanism is not sufficiently eliminated, the mechanism is greatly impacted, and the mechanism is easy to trip.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide an operating mechanism of a backup protector of a surge protector, which can improve the operational reliability of a circuit breaker.
In order to achieve the above purpose, the invention provides an operating mechanism of a backup protector of a surge protector, which adopts the following technical scheme: the operating mechanism of the backup protector of the surge protector comprises a switching-on/off operating mechanism, a movable contact rod and a static contact rod, wherein the middle part of the movable contact rod is hinged to a pin shaft, the right end of the movable contact rod is provided with a movable contact, the left end of the movable contact rod is provided with a driving waist hole, and the movable contact faces to a static contact on the static contact rod;
The switching-on/off mechanism comprises a rotary support, a transmission rod is connected between the rotary support and the movable contact rod, one end of the transmission rod is hinged with the rotary support through a connecting pin, the other end of the transmission rod is connected with a sliding pin, and the sliding pin is inserted into the driving waist hole; the connecting pin is sleeved with a torsion spring, and the torsion spring rotationally presses the transmission rod on the rotary bracket in the clockwise direction;
when the opening and closing operation mechanism drives the rotating bracket to rotate clockwise, the transmission rod drives the movable contact rod to rotate anticlockwise so as to be closed; when the opening and closing operation mechanism drives the rotating bracket to rotate anticlockwise, the transmission rod drives the movable contact rod to rotate clockwise to close.
Preferably, the fixed contact is arranged on the lower surface of the fixed contact rod, and the moving contact is arranged on the upper surface of the moving contact rod.
Preferably, the static contact rod comprises a connecting part and a first conductive part which are mutually perpendicular, and the static contact is arranged at the end part of the first conductive part; the movable contact rod comprises a transmission part and a second conductive part which are mutually perpendicular, and the movable contact is arranged at the end part of the second conductive part; when the moving contact and the fixed contact are contacted, the first conductive part and the second conductive part are parallel to each other.
Preferably, a limiting surface is arranged on the rotary support, and the torsion spring compresses the transmission rod towards the limiting surface.
Preferably, the rotary bracket is provided with a connecting groove, and the connecting pin is connected between the front side wall and the rear side wall of the connecting groove.
More preferably, the right side wall of the connecting groove is provided with a reserved notch, and when the transmission rod rotates anticlockwise, the transmission rod moves into the reserved notch partially.
Preferably, a positioning clamping groove is formed in the transmission rod, the torsion spring is provided with a connecting arm, and the connecting arm is clamped in the positioning clamping groove.
Preferably, the rotating support is hinged on a rotating shaft, and the rotating support is in transmission connection with the operating handle.
Correspondingly, the invention also provides a circuit breaker comprising the operating mechanism of the surge protector backup protector according to the technical scheme or any preferable technical scheme.
As described above, the operating mechanism of the backup protector of the surge protector has the following beneficial effects: in the operating mechanism of the back-up protector of the surge protector, as the transmission rod is connected between the rotating bracket and the movable contact rod, one end of the transmission rod is hinged with the rotating bracket through the connecting pin, and the other end of the transmission rod is connected with the sliding pin which is inserted into the driving waist hole of the movable contact rod; the connecting pin is sleeved with a torsion spring, and the torsion spring compresses the transmission rod on the rotating bracket clockwise; therefore, in the closing state, if the movable contact rod is pushed by the action of the electric repulsive force, the transmission rod can overcome the action of the torsion spring to rotate for a certain angle in a buffering way, the excessive impact force caused by the rotating support and the opening and closing operation mechanism can not cause the opening and closing of the opening and closing mechanism, and after the electric repulsive force disappears or reduces, the transmission rod can drive the movable contact rod to restore to the closing state with the static contact rod under the action of the torsion spring. Therefore, the operating mechanism of the back-up protector of the surge protector can improve the working reliability of the circuit breaker, and is simple in structure and convenient to use.
Drawings
Fig. 1 is a schematic perspective view showing an operating mechanism of a back-up protector for a surge protector according to the present invention.
Fig. 2 shows a front view of an operating mechanism of a surge protector backup protector of the present invention.
Fig. 3 shows an enlarged schematic view at a in fig. 2.
Fig. 4 shows an exploded view of the operating mechanism of a surge protector backup protector of the present invention.
Fig. 5 shows a schematic structural view of the rotating bracket.
Description of element reference numerals
1. Switching-on and switching-off operating mechanism
2. Movable feeler lever
3. Static contact rod
4. Pin shaft
5. Moving contact
6. Drive waist hole
7. Static contact
8. Rotary bracket
9. Transmission rod
10. Connecting pin
11. Sliding pin
12. Torsion spring
13. Connecting part
14. First conductive part
15. Transmission part
16. Second conductive part
17. Limiting surface
18. Connecting groove
19. Reserved gap
20. Positioning clamping groove
21. Connecting arm
22. Rotating shaft
23. Lock catch accessory
24. Brake separating spring
25. Lock catch
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for which the invention may be practiced or for which the relative relationships may be altered or modified without materially altering the technical context.
As shown in fig. 1 to 4, the invention provides an operating mechanism of a backup protector of a surge protector, which comprises a switching-on/off operating mechanism 1, a movable contact rod 2 and a static contact rod 3, wherein the middle part of the movable contact rod 2 is hinged on a pin shaft 4, the right end of the movable contact rod 2 is provided with a movable contact 5, the left end of the movable contact rod 2 is provided with a driving waist hole 6, and the movable contact 5 faces to a static contact 7 on the static contact rod 3; the switching-on/off mechanism comprises a rotary support 8, a transmission rod 9 is connected between the rotary support 8 and the movable contact rod 2, one end of the transmission rod 9 is hinged with the rotary support 8 through a connecting pin 10, the other end of the transmission rod is connected with a sliding pin 11, and the sliding pin 11 is inserted into the driving waist hole 6; a torsion spring 12 is sleeved on the connecting pin 10, and the torsion spring 12 rotationally presses the transmission rod 9 on the rotary bracket 8 in the clockwise direction; when the opening and closing operation mechanism 1 drives the rotary support 8 to rotate clockwise, the transmission rod 9 drives the movable contact rod 2 to rotate anticlockwise so as to be closed; when the opening and closing operation mechanism 1 drives the rotary support 8 to rotate anticlockwise, the transmission rod 9 drives the movable contact rod 2 to rotate clockwise to close.
In the operating mechanism of the back-up protector of the surge protector, as the transmission rod 9 is connected between the rotating bracket 8 and the movable contact rod 2, one end of the transmission rod 9 is hinged with the rotating bracket 8 through the connecting pin 10, the other end of the transmission rod is connected with the sliding pin 11, and the sliding pin 11 is inserted into the driving waist hole 6 of the movable contact rod 2; the connecting pin 10 is sleeved with a torsion spring 12, and the torsion spring 12 presses the transmission rod 9 on the rotary bracket 8 in the clockwise direction; therefore, in the closing state, if the movable contact rod 2 is pushed by the electric repulsive force to push the transmission rod 9, the transmission rod 9 can overcome the action of the torsion spring 12 to rotate for a certain angle in a buffering way, the excessive impact force caused by the rotating bracket 8 and the opening and closing operating mechanism 1 can not cause the opening and closing of the button, and after the electric repulsive force disappears or reduces, the transmission rod 9 can drive the movable contact rod 2 to restore to the closing state with the static contact rod 3 under the action of the torsion spring 12. Therefore, the operating mechanism of the back-up protector of the surge protector can improve the working reliability of the circuit breaker, and is simple in structure and convenient to use.
In the operating mechanism of the back-up protector of the surge protector, as shown in fig. 2 and 4, a rotating bracket 8 is connected with a breaking spring 24, one end of the breaking spring 24 is propped against a shell of the circuit breaker, the other end of the breaking spring is propped against the rotating bracket 8, when the breaking operating mechanism 1 is used for switching on the circuit breaker, the breaking spring 24 is compressed for storing energy, parts such as a lock catch 25 and a lock catch accessory 23 of the circuit breaker form a lock catch mechanism to lock the breaking operating mechanism 1 in a switching-on state, the circuit breaker also comprises a tripping mechanism, when the circuit breaker needs to be broken, the tripping mechanism unlocks the lock catch 25, and under the action of the breaking spring 24, the breaking operating mechanism 1 of the circuit breaker separates a moving contact 5 from a fixed contact 7.
Referring to fig. 1 and 2, the fixed contact 7 is disposed on the lower surface of the fixed contact rod 3, the moving contact 5 is disposed on the upper surface of the moving contact rod 2, the fixed contact rod 3 includes a connecting portion 13 and a first conductive portion 14 that are perpendicular to each other, the connecting portion 13 is connected to a connecting terminal, and the fixed contact 7 is disposed at an end portion of the first conductive portion 14; the movable contact rod 2 comprises a transmission part 15 and a second conductive part 16 which are mutually perpendicular, and the movable contact 5 is arranged at the end part of the second conductive part 16; when the movable contact 5 and the fixed contact 7 are in contact, the first conductive part 14 and the second conductive part 16 are parallel to each other. In this way, when the circuit breaker is closed, the first conductive portion 14 and the second conductive portion 16 are substantially straight, and the electric repulsive force generated on the movable contact rod 2 and the stationary contact rod 3 when the current passes through the first conductive portion 14 and the second conductive portion 16 is relatively small.
Referring to fig. 1 and 2, the rotating bracket 8 is connected to a rotating shaft 22, the rotating shaft 22 is connected to a casing of the circuit breaker, the movable contact rod 2 is connected to the pin shaft 4, the connecting pin 10 is connected to the rotating bracket 8, and the sliding pin 11 is connected to the transmission rod 9. When the transmission rod 9 drives the movable contact rod 2 to switch on or the movable contact rod 2 receives electric repulsive force to toggle the transmission rod 9, the sliding pin 11 slides in the driving waist groove to transmit power, and the sliding pin 11 is in sliding connection with the driving waist groove, so that the movement is smooth and the friction force is small.
In an operating mechanism of a surge protector backup protector of the present invention, a torsion spring 12 presses a transmission rod 9 against a rotating bracket 8, and when the rotating bracket 8 rotates, the transmission rod 9 rotates together with the rotating bracket 8. When a transient peak high current (such as 10/350 mu s or 8/20 mu s lightning impulse current) passes through the circuit breaker, the movable contact rod 2 is separated from the static contact rod 3 briefly under the action of a transient huge electric repulsive force, and the movable contact rod 2 rotates around the pin shaft 4 to drive the transmission rod 9 to rotate around the connecting pin 10 against the acting force of the torsion spring 12; when the instantaneous peak high current disappears, the transmission rod 9 drives the movable contact rod 2 to restore to a closing state with the static contact rod 3 under the reaction force of the torsion spring 12; during this time, the rotating bracket 8 is kept still while the transmission rod 9 rotates, and the transmission rod 9 does not generate a great impact force on the rotating bracket 8, so that the trip mechanism and the lock catch 25 mechanism connected with the rotating bracket 8 are not easy to trigger and trip. Referring to fig. 2 and 5, the rotating bracket 8 is provided with a limiting surface 17, and the torsion spring 12 compresses the driving rod 9 towards the limiting surface 17. As shown in fig. 5, the rotating bracket 8 is provided with a connecting slot 18, and the connecting pin 10 is connected between the front and rear side walls of the connecting slot 18. As mentioned above, when the instantaneous peak current passes through the circuit breaker, the transmission rod 9 rotates around the connecting pin 10, the larger the electric repulsive force is, the larger the separation amplitude of the movable contact rod 2 relative to the static contact rod 3 is, the larger the rotation amplitude of the transmission rod 9 is, in order to avoid the interference between the transmission rod 9 and the side wall of the connecting slot 18, as shown in fig. 5, the right side wall of the connecting slot 18 is provided with a reserved notch 19, when the transmission rod 9 rotates anticlockwise, the transmission rod 9 moves into the reserved notch 19 partially, so that when the electric repulsive force is larger, the transmission rod 9 can rotate by a larger amplitude without striking the rotating bracket 8 to cause false unlocking release.
In an operating mechanism of a back-up protector for a surge protector according to the present invention, a torsion spring 12 presses a transmission rod 9 against a rotating bracket 8, a tightening force is applied to the transmission rod 9 in order to cause the torsion spring 12 to clamp the transmission rod 9, as shown in fig. 3, a positioning clamping groove 20 is provided on the transmission rod 9, the torsion spring 12 has a connecting arm 21, and the connecting arm 21 is clamped in the positioning clamping groove 20.
Based on the technical scheme of the embodiment, the operating mechanism of the back-up protector of the surge protector is characterized in that the transmission rod 9 is additionally arranged between the movable contact rod 2 and the opening and closing operating mechanism 1, so that unlocking and tripping are not easy to occur when a circuit breaker passes through instantaneous peak high current, the repulsive angle of the movable contact rod 2 under the action of electric repulsive force is increased, the mechanism is prevented from being tripped under the action of huge electric repulsive force, and the stability of the mechanism is ensured.
Correspondingly, the invention also provides a circuit breaker comprising the operating mechanism of the surge protector backup protector according to the technical scheme or any preferable technical scheme.
In summary, the present invention effectively overcomes the disadvantages of the prior art and has high industrial utility value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. The operating mechanism of the backup protector of the surge protector is characterized by comprising a switching-on and switching-off operating mechanism, a movable contact rod and a static contact rod, wherein the middle part of the movable contact rod is hinged on a pin shaft, the right end of the movable contact rod is provided with a movable contact, the left end of the movable contact rod is provided with a driving waist hole, and the movable contact faces to a static contact on the static contact rod;
the switching-on/off operation mechanism comprises a rotary support, a transmission rod is connected between the rotary support and the movable contact rod, one end of the transmission rod is hinged with the rotary support through a connecting pin, the other end of the transmission rod is connected with a sliding pin, and the sliding pin is inserted into the driving waist hole; the connecting pin is sleeved with a torsion spring, and the torsion spring rotationally presses the transmission rod on the rotary bracket in the clockwise direction;
When the opening and closing operation mechanism drives the rotating bracket to rotate clockwise, the transmission rod drives the movable contact rod to rotate anticlockwise so as to be closed; when the opening and closing operation mechanism drives the rotary support to rotate anticlockwise, the transmission rod drives the movable contact rod to rotate clockwise to open the switch;
The static contact rod comprises a connecting part and a first conductive part which are mutually perpendicular, and the static contact is arranged at the end part of the first conductive part; the movable contact rod comprises a transmission part and a second conductive part which are mutually perpendicular, and the movable contact is arranged at the end part of the second conductive part; when the moving contact and the fixed contact are contacted, the first conductive part and the second conductive part are parallel to each other;
The rotary support is provided with a connecting groove, and the connecting pin is connected between the front side wall and the rear side wall of the connecting groove.
2. The surge protector backup protector operating mechanism of claim 1, wherein: the static contact is arranged on the lower surface of the static contact rod, and the moving contact is arranged on the upper surface of the moving contact rod.
3. The surge protector backup protector operating mechanism of claim 1, wherein: the rotary support is provided with a limiting surface, and the torsion spring compresses the transmission rod towards the limiting surface.
4. The surge protector backup protector operating mechanism of claim 1, wherein: the right side wall of the connecting groove is provided with a reserved gap, and when the transmission rod rotates anticlockwise, the transmission rod partially moves into the reserved gap.
5. The surge protector backup protector operating mechanism of claim 1, wherein: the transmission rod is provided with a positioning clamping groove, the torsion spring is provided with a connecting arm, and the connecting arm is clamped in the positioning clamping groove.
6. The surge protector backup protector operating mechanism of claim 1, wherein: the rotary support is hinged on a rotating shaft and is in transmission connection with the operating handle.
7. A circuit breaker comprising an operating mechanism of a surge protector backup protector according to any one of the preceding claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569563.5A CN112151325B (en) | 2019-06-27 | 2019-06-27 | Operating mechanism of back-up protector of surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569563.5A CN112151325B (en) | 2019-06-27 | 2019-06-27 | Operating mechanism of back-up protector of surge protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112151325A CN112151325A (en) | 2020-12-29 |
| CN112151325B true CN112151325B (en) | 2024-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910569563.5A Active CN112151325B (en) | 2019-06-27 | 2019-06-27 | Operating mechanism of back-up protector of surge protector |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210607137U (en) * | 2019-06-27 | 2020-05-22 | 上海永继电气股份有限公司 | Operating mechanism and circuit breaker of surge protector backup protector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433222C (en) * | 2005-10-13 | 2008-11-12 | 德力西电气有限公司 | Contact system for circuit breaker |
| CN104143469A (en) * | 2013-11-15 | 2014-11-12 | 国家电网公司 | Breaker closing resistor tripping mechanism and breaker using same |
| CN103928272B (en) * | 2014-03-19 | 2015-12-02 | 浙江天正智能电器有限公司 | A kind of breaker structure and circuit breaker utilizing electrodynamic repulsion force rapid-releasing |
| CN104201068A (en) * | 2014-08-12 | 2014-12-10 | 西安交通大学 | Direct current circuit breaker |
| CN104715980B (en) * | 2015-03-19 | 2017-01-25 | 河北宝凯电气股份有限公司 | Magnetic reserved tripping protection mechanism |
| CN107424885B (en) * | 2017-06-29 | 2019-08-09 | 温州市正松电气有限公司 | A kind of auto recloser |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210607137U (en) * | 2019-06-27 | 2020-05-22 | 上海永继电气股份有限公司 | Operating mechanism and circuit breaker of surge protector backup protector |
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| CN112151325A (en) | 2020-12-29 |
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