CN205177735U - Electric operating mechanism's indicating device - Google Patents
Electric operating mechanism's indicating device Download PDFInfo
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- CN205177735U CN205177735U CN201520970916.XU CN201520970916U CN205177735U CN 205177735 U CN205177735 U CN 205177735U CN 201520970916 U CN201520970916 U CN 201520970916U CN 205177735 U CN205177735 U CN 205177735U
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- contact
- driving shaft
- breaker
- indicating device
- operating mechanism
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Abstract
The utility model provides an electric operating mechanism's indicating device, belongs to low voltage apparatus annex technical field. Electric operating mechanism is on moulded case circuit breaker, and moulded case circuit breaker includes quiet, moving contact, universal driving shaft, link rod, characteristics: electric operating mechanism has an indicating device, and the one end that the link rod is being close to the universal driving shaft has the U -shaped opening, and the U -shaped opening of link rod is arranged in to the universal driving shaft, work as the breaker closing, and the closed circuit breaker that makes of moving contact and static contact is in the on -state promptly, and the contact surface is to moving down by driving the link rod under universal driving shaft in contact support this moment and the U -shaped open -ended, work as breaker open operation, moving contact and static contact separately make the circuit breaker be in off -state promptly, and the contact surface supports to lean on and to drive the link rod rebound on universal driving shaft in the contact support and the U -shaped open -ended. No matter the circuit breaker is in the mechanism's conversion down of normal operate condition, or during contact emergence melting welding, all can instruct the operating condition of circuit breaker correctly, effectively through indicating device, prevent misuse ensures the personal safety.
Description
Technical field
The utility model belongs to low-voltage electrical apparatus attachment technique field, is specifically related to a kind of indicating device of the motor-operating mechanism for breaker of plastic casing.
Background technology
Along with the development of breaker of plastic casing technology, the requirement of market to circuit breaker proposes more and more diversified demand, it is also proposed more, higher requirement to the performance of the annex of breaker of plastic casing adapted.In prior art, mechanism for identifying working state of circuit breaker in energy storage electric pneumatic operating mechanism obtains from circuit breaker operating handle, circuit breaker close a floodgate, separating brake and dropout time, circuit breaker operating handle is respectively at three diverse locations, and identification mechanism obtains the status signal of circuit breaker and feeds back output on three diverse locations.
Melting welding is one of principal mode of device for switching contact inefficacy, in contact closure process, due to the electric arc formed in prebreakdown electric arc time closed or contact bounce process, makes dynamic and static contact face metal melting and forms melting welding.When the disjunction power of contact is greater than the melting welding power of contact, the melting welding caused can recover, and is called recoverable melting welding; Otherwise, be called expendable melting welding.
For example, Chinese invention patent Authorization Notice No. CN101540243B discloses one " indicating device of energy-storing electrically operated mechanism and anti-error indicating device thereof ", comprise an indication piece with cue mark, the slide block of described energy-storing electrically operated mechanism and the handle of breaker of plastic casing matched, described indication piece is pivotally arranged on energy-storing electrically operated mechanism, an interlock marking mechanism is provided with between described slide block and indication piece, interlock marking mechanism described in described slider-actuated, in order to make described indication piece pivot, and then demonstrate different cue marks.In this technical scheme, indication piece obtains the handle that the signal of breaker closing, separating brake or trip positions derives from circuit breaker, failure condition when it does not consider contact of breaker generation melting welding.Once there is contact melting welding situation in circuit breaker, circuit breaker handle reliably can not demonstrate the time of day of now circuit breaker, so just cause the electrically operated institution matched with it to occur misdirection.
In view of above-mentioned prior art, be necessary the structure rational modification in addition to the existing energy storage electric pneumatic operating mechanism for breaker of plastic casing.For this reason, the applicant has done useful design, and technical scheme described below produces under this background.
Summary of the invention
The purpose of this utility model to provide a kind of structure simple, reliable, prevent misoperation, guarantee the indicating device of the motor-operating mechanism of personal safety, it can realize the feedback interlock of motor-operating mechanism and circuit-breaker status information, correctly, effectively can indicate working state of circuit breaker.
The purpose of this utility model reaches like this, a kind of indicating device of motor-operating mechanism, described motor-operating mechanism is arranged on breaker of plastic casing, described breaker of plastic casing comprises fixed contact, to be arranged in contact support and to coordinate with fixed contact and realize the moving contact of breaker of plastic casing on/off switch, cross-under on contact is supported for realizing with moving contact the universal driving shaft that links, the link rod linked with described universal driving shaft, it is characterized in that, described motor-operating mechanism has the indicating device for connecting with described link rod, described link rod has U-shaped opening in the one end near universal driving shaft, described universal driving shaft is placed in the U-shaped opening of link rod, work as breaker closing, namely moving contact and fixed contact close and make circuit breaker be in on-state, the lower contact-making surface of the universal driving shaft in now contact support and U-shaped opening moves down against driving link rod, and work as breaker open operation, namely moving contact and fixed contact separately make circuit breaker be in off-state, and the upper contact-making surface of the universal driving shaft in now contact support and U-shaped opening moves up against driving link rod.
In a specific embodiment of the present utility model, described indicating device comprises a swing arm and a push rod, and described push rod can be moved up and down by described drive links, and described swing arm to be rotatably provided on motor-operating mechanism and to be driven by push rod.
In another specific embodiment of the present utility model, described indicating device also comprises a spring, and this spring is arranged on described push rod, for providing downward restoring force for push rod.
In another specific embodiment of the present utility model, described universal driving shaft moves between upper contact-making surface and lower contact-making surface, and the stroke of described movement comprises an idle stroke preset.
In another specific embodiment of the present utility model, described idle stroke is greater than the contact over travel of breaker of plastic casing.
The utility model is due to after employing said structure, the beneficial effect had: utilize link rod number of winning the confidence on circuit breaker internal universal driving shaft, pushrod movement again by connecting with link rod, swing arm action instruction described in driving, no matter thus the mechanism conversion of circuit breaker under regular event state, or during contact generation melting welding, the operating state of circuit breaker all correctly, effectively can be indicated by indicating device, prevent misoperation, guarantee personal safety.
Accompanying drawing explanation
Fig. 1 is the structure chart of breaker of plastic casing described in the utility model at closing position.
Fig. 2 is the structure chart of breaker of plastic casing described in the utility model at open position.
Fig. 3 is the floor map of breaker of plastic casing described in the utility model combined floodgate instruction.
Fig. 4 is the floor map of breaker of plastic casing separating brake described in the utility model instruction.
Fig. 5 is the structure diagram of indicating device described in the utility model.
In figure: 1. contact-making surface, 1513. hook parts on breaker of plastic casing, 11. fixed contacts, 12. moving contacts, 13. contact supports, 14. universal driving shafts, 15. link rods, 151.U shape opening, 1511. times contact-making surfaces, 1512.; 2. motor-operating mechanism, 21. indicating devices, 211. swing arms, 2111. sliding ends, 2112. display ends, 2113. projections, 212. push rods, 2121. grooves, 213. springs, 214. pivot pins, 22. face shields, 221. windows.
Embodiment
Applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the utility model design all should be considered as protection range of the present utility model.
Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model relates to a kind of indicating device of the motor-operating mechanism on breaker of plastic casing, motor-operating mechanism in this embodiment is a kind of energy storage electric pneumatic operating mechanism, described energy storage electric pneumatic operating mechanism 2 is arranged on breaker of plastic casing 1, described breaker of plastic casing 1 comprises fixed contact 11, moving contact 12, contact supports 13, universal driving shaft 14 and link rod 15, moving contact 12 to be arranged in contact support 13 and to coordinate with fixed contact 11 and realize breaker of plastic casing 1 on/off switch, described universal driving shaft 14 cross-under is supported to realize linking with moving contact 12 on 13 at contact, link rod 15 and described universal driving shaft 14 link, this link rod 15 has opening 151 in the one end near universal driving shaft 14, described opening 151 is in " U " shape, described universal driving shaft 14 is placed in described U-shaped opening 151, U-shaped opening 151 has lower contact-making surface 1511 and upper contact-making surface 1512, described universal driving shaft 14 moves between upper contact-making surface 1512 and lower contact-making surface 1511, the stroke of described movement comprises an idle stroke preset, that is, when circuit breaker starts separating brake, moving contact 12 action, universal driving shaft 14 also rotates with moving contact 12, but now moving contact 12 and fixed contact 11 are still in on-state, for ensureing that universal driving shaft 14 does not contact with upper contact-making surface 1512, link rod 15 is not driven to move up, need the idle stroke that a section default, therefore described idle stroke is greater than the contact over travel of breaker of plastic casing 1.The end of the lower end contact-making surface 1511 of preferred U-shaped opening 151 is provided with hook part 1513, comes off when this hook part 1513 is for preventing universal driving shaft 14 from rotating with contact support 13 from U-shaped opening 151.Work as breaker closing, namely moving contact 12 and fixed contact 11 close and make circuit breaker be in on-state (now including contact generation melting welding situation), and the universal driving shaft 14 in now contact support 13 drives link rod 15 to move down against lower contact-making surface 1511; And work as breaker open operation, namely moving contact 12 and fixed contact 11 separately make circuit breaker be in off-state, and the universal driving shaft 14 in now contact support 13 drives link rod 15 to move up against upper contact-making surface 1512.
Described energy storage electric pneumatic operating mechanism 2 has the indicating device 21 for connecting with described link rod 15, and what this indicating device 21 correctly can demonstrate circuit breaker switches on and off state.Described indicating device 21 comprises swing arm 211 and push rod 212, and described push rod 212 is driven can move up and down by described link rod 15, and described swing arm 211 to be rotatably provided on motor-operating mechanism 2 and to be driven by push rod 212.Described swing arm 211 is provided with sliding end 2111 and display end 2112, projection 2113 on described sliding end 2111 is slidably arranged in the groove 2121 of push rod 212, display end 2112 is positioned at below the window 221 of the face shield 22 of described energy storage electric pneumatic operating mechanism 2, display end 2112 has ON or OFF two mark, described spring 213 is arranged on described push rod 212, for providing downward restoring force for push rod 212.When breaker closing, namely moving contact 12 and fixed contact 11 close, and make circuit breaker be in on-state (now including contact generation melting welding situation), and the display end 2112 of now indicating device 21 is labeled as " ON "; When breaker open operation, moving contact 12 and fixed contact 11 separately namely circuit breaker be in off-state, the display end 2112 of now indicating device 21 is labeled as " OFF ".
Please continue to refer to Fig. 1 and composition graphs 3 and Fig. 5, when breaker closing, namely contact support 13 rotates clockwise and drives in moving contact 12 and fixed contact 11 closing course, link rod 15 moves downward to depart from push rod 212 by the driving of universal driving shaft 14 and coordinates, described push rod 212 is at the moved downward of spring 213, pull swing arm 211, projection 2113 on described sliding end 2111 is upward sliding in the groove 2121 of push rod 212, the display end 2112 of indicating device 21 rotates clockwise around pivot pin 214, make its display end 2112 is labeled as " ON " (as shown in Figure 3).
Please continue to refer to Fig. 2 and composition graphs 4 and Fig. 5, when circuit breaker is at separating brake or fault trip, namely contact support 13 rotates counterclockwise and drives moving contact 12 to be separated with fixed contact 11, drive universal driving shaft 14 to rotate simultaneously, link rod 15 is driven to move up when universal driving shaft 14 rotates counterclockwise, link rod 15 drives push rod 212 also to move up, thus push rod 212 promotes swing arm 211, projection 2113 on described sliding end 2111 is slide downward in the groove 2121 of push rod 212, the display end 2112 of indicating device 21 rotates counterclockwise around pivot pin 214, the mark on its display end 2112 is made to become " OFF " (as shown in Figure 4) from " ON ", thus point out operating state to operator intuitively.
Here it should be noted that: what Fig. 1 and Fig. 2 described is the mechanism conversion of circuit breaker under regular event state, and when line failure breaker mechanism unlocks, and drive the handle of circuit breaker to trip positions, now contact generation melting welding, due to the generation of melting welding, the moving contact 12 of circuit breaker and fixed contact 11 is caused not to disconnect, moving contact 12 and fixed contact 11 are still in closure state, namely circuit breaker is still in on-state, universal driving shaft 14 in now contact support 13 can not drive link rod 15 to move up, link rod 15 cannot drive push rod 212 to move up, thus push rod 212 can not promote swing arm 211 and rotates, mark now on display end 2112 is still " ON ", thus correct instruction can be realized.
Claims (5)
1.
a kind of indicating device of motor-operating mechanism, described motor-operating mechanism (2) is arranged on breaker of plastic casing (1), described breaker of plastic casing (1) comprises fixed contact (11), be arranged on contact support (13) go up and coordinate with fixed contact (11) and realize the moving contact (12) of breaker of plastic casing on/off switch, cross-under in contact support (13) for realizing with moving contact (12) universal driving shaft (14) that links, the link rod (15) linked with described universal driving shaft (14), it is characterized in that, described motor-operating mechanism (2) has the indicating device (21) for connecting with described link rod (15), described link rod (15) has U-shaped opening (151) in the one end near universal driving shaft (14), described universal driving shaft (14) is placed in the U-shaped opening (151) of link rod (15), work as breaker closing, namely moving contact (12) and fixed contact (11) close and make circuit breaker be in on-state, universal driving shaft (14) in now contact support (13) moves down against driving link rod (15) with the lower contact-making surface (1511) of U-shaped opening (151), and work as breaker open operation, namely moving contact (12) and fixed contact (11) separately make circuit breaker be in off-state, and the universal driving shaft (14) in now contact support (13) moves up against driving link rod (15) with the upper contact-making surface (1512) of U-shaped opening (151).
2.
the indicating device of motor-operating mechanism according to claim 1, it is characterized in that described indicating device (21) comprises a swing arm (211) and a push rod (212), described push rod (212) is driven can move up and down by described link rod (15), and described swing arm (211) is rotatably provided in motor-operating mechanism (2) and goes up and driven by push rod (212).
3.
the indicating device of motor-operating mechanism according to claim 2, it is characterized in that described indicating device (21) also comprises a spring (213), this spring (213) is arranged on described push rod (212), for providing downward restoring force for push rod (212).
4.
the indicating device of motor-operating mechanism according to claim 1, it is characterized in that described universal driving shaft (14) moves between upper contact-making surface (1512) and lower contact-making surface (1511), the stroke of described movement comprises an idle stroke preset.
5.
the indicating device of motor-operating mechanism according to claim 4, is characterized in that described idle stroke is greater than the contact over travel of breaker of plastic casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970916.XU CN205177735U (en) | 2015-11-30 | 2015-11-30 | Electric operating mechanism's indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970916.XU CN205177735U (en) | 2015-11-30 | 2015-11-30 | Electric operating mechanism's indicating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205177735U true CN205177735U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520970916.XU Active CN205177735U (en) | 2015-11-30 | 2015-11-30 | Electric operating mechanism's indicating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205177735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644791A (en) * | 2017-10-31 | 2018-01-30 | 浙江天正电气股份有限公司 | A kind of feedback mechanism of reclosing and there is its breaker |
-
2015
- 2015-11-30 CN CN201520970916.XU patent/CN205177735U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644791A (en) * | 2017-10-31 | 2018-01-30 | 浙江天正电气股份有限公司 | A kind of feedback mechanism of reclosing and there is its breaker |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |