CN104810220B - The open-phase protection switch of a kind of three phase electric machine and using method thereof - Google Patents
The open-phase protection switch of a kind of three phase electric machine and using method thereof Download PDFInfo
- Publication number
- CN104810220B CN104810220B CN201510252388.9A CN201510252388A CN104810220B CN 104810220 B CN104810220 B CN 104810220B CN 201510252388 A CN201510252388 A CN 201510252388A CN 104810220 B CN104810220 B CN 104810220B
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- Prior art keywords
- slide block
- button
- phase
- reset
- metal clips
- 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
-
- 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
- H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Slide Switches (AREA)
Abstract
The present invention relates to open-phase protection switch and the using method thereof of a kind of three phase electric machine, switch includes that switch external arranges ON button, and the power output end that OFF button and switch internal arrange power input and have three moved ends sub and corresponding has three static terminals；In moved end, son is provided with three corresponding metal clips with the centre of static terminal, and metal clips is respectively cooperating with riveting movable contact；Three metal clips are applied pressure when ON button is pressed by internal structure makes it deform spring simultaneously; when threephase motor has any phase power phase shortage; additionally biphase current will increase therewith; when electric current increases to certain current value; additionally any phase power supply of the power supply of two-phase disconnects, and reaches the purpose of motor phase failure protection；Three metal clips are applied buffer brake when OFF button is pressed by internal structure makes its reversal deformation bounce simultaneously, makes the movable contact on power input and the stationary contact moment separation cut power supply on power output end.
Description
Technical field
The present invention relates to motor phase failure protection appliance field, particularly relate to the phase shortage of a kind of three phase electric machine
Protection switch and using method thereof.
Background technology
The switch used at present, only for the purposes of startup power supply, does not has the function of open-phase protection,
This motor three-phase lack phase protection switch, compared with electronic motor three-phase lack phase protection switch, separately has
A kind of two-phase, three-phase current overcurrent protection switch, its panel has bottom two buttons of on an off and switch
Loading three manual overload protective devices, do not have ON/OFF operation, button simply plays power supply opening effect: its
Shortcoming is: 1, volume is big, wiring is complicated；2, after in circuit, current overload disconnects to protection device,
Owing to protector SR is arranged on switch internal, after circuit overhauls, as need to be connected protection from newly
Device device makes it recover normally to work, need to take whole switch apart, user the most also can be allowed to misunderstand and recognize
The most damaged for this overload protection threephase switch, need to change the defects such as switch parts, to user band
Carry out the biggest inconvenience；Another is intended to be completed by three push-botton operations, and structure complexity cost
Too high, it is impossible to be accepted by market.
Summary of the invention
The technical problem to be solved is to provide the open-phase protection switch of a kind of three phase electric machine and makes
By method, its simple in construction, stable performance, operation, easy to maintenance, and can more effectively protect
The protection of motor three-phase lack phase, is in three-phase motor open-phase protection, the product that cost performance is best,
Domestic also in blank.
The technical solution adopted for the present invention to solve the technical problems is: provide the phase shortage of a kind of three phase electric machine
Protection switch, including shell rack, rack shell and drain pan, described shell rack and drain pan are interlocked,
The most internally installed have rack shell, and ON button and OFF have been mounted side by side in described shell rack
Button, the lower end of described ON button slides laterally connection ON slide block, under described OFF button
End is contacted with the OFF slide block slid laterally by inclined-plane, and slide block is passed through in the side of described OFF slide block
Spring is connected with reset slide block, and the side of described ON button is contacted with reset slide block by inclined-plane, institute
In the rack shell of the reset slide block lower end stated, sheet metal support is installed；
Three moved end and three static terminals, three moved end are installed in described sheet metal support relatively
On the metal clips that upper end extend between OFF slide block and reset slide block is installed, in the middle part of this metal clips
The movable contact corresponding with the stationary contact on static terminal is installed.
Supplementing as to the one of technical solutions according to the invention, described moved end and static terminal are all in L
Shape, both bottom end all stretch out the outside at sheet metal support.
Supplement as to the one of technical solutions according to the invention, described ON button and OFF button
Internal sleeve is connected to the button spring that lower end is withstood with shell rack.
Further, one end of described ON slide block is provided with what the lower end inside wall with ON button withstood
Sliding block spring.
Further, described moved end and static terminal are the most L-shaped, and both bottom end all stretch out
The outside of sheet metal support.
As preferably, waterproof cover, described waterproof cover are stamped in described ON button and the outside of OFF button
Outside install fixing by anti-hydraulic pressure plate.
Further, the bottom end of described OFF slide block is extended with reset push rod to ON slide block.
Specifically comprising the following steps that of the using method of the open-phase protection switch described in technique scheme
When ON button is pressed, the ON slide block that ON button is arranged synchronizes downwards, meanwhile ON slide block
Force reset slide block forward slip, join respectively on three moved end in reset slipper push protection device simultaneously
Closing the metal clips of riveting, metal clips is affected short time set by external force and is bounced, made on three metal clips
It is respectively cooperating with being respectively cooperating with on movable contact and three static terminals of riveting the stationary contact moment cooperation simultaneously of riveting
Connect conducting three-phase circuit, and protect on-state always；
When ON slide block downward stroke exceedes reset slide block, reset slide block loses thrust forward but by slide block
Spring impact returns to original place, thus reset slide block is limited in this, makes reset slide block and ON button protect always
Hold the state being pressed；
When threephase motor has any phase power phase shortage, additionally biphase current will increase therewith, when
When electric current increases above load current value, additionally the overheated automatic separating of the metal clips of two-phase power supply disconnects
Any phase power supply, motor will be automatically stopped operating, reaches the purpose of motor phase failure protection, as
Only need to restart after failture evacuation and switch；
Drive when OFF button is pressed OFF slide block to front-slider, promote in protection device three to move simultaneously
Being respectively cooperating with the metal clips of riveting on terminal, metal clips is affected short time set by external force and is bounced, made gold
Belong to the stationary contact moment being respectively cooperating with riveting on the movable contact and three static terminals being respectively cooperating with riveting on shell fragment
Separation cut three-phase circuit, OFF slide block is at the reset push rod promoted while metal clips on OFF slide block also
Being pushed into by ON slide block outside the stop zone departing from reset slide block, ON button is affected by button spring to be driven
ON slide block and ON slide block are returned to original place by sliding block spring effect simultaneously, remove OFF after dump success
The pressure that button applies, OFF button is affected by button spring after losing pressure to be back in situ, OFF simultaneously
Slide block also loses the pressure of OFF button to be affected by sliding block spring and is also back in situ, as restarted out
Close, press ON button and can return to the first step, form do action.
Beneficial effect
The present invention relates to open-phase protection switch and the using method thereof of a kind of three phase electric machine, present invention utilizes
The characteristic principle of bimetallic thermal deformation, it is provided that a kind of structure is simple and clear, compact, is conducive to operation and judges
A kind of motor three-phase lack phase protection device and principle, major function has: this motor three-phase lack phase protect
Protect switch, make sheet metal heating generation action by electric current, when threephase motor has any phase electricity
During the phase shortage of source, additionally biphase current will increase therewith, when electric current increases to certain current value, additionally
Any phase power supply of the power supply of two-phase disconnects, and motor will be automatically stopped operating, reach motor open
The purpose of protection mutually, this technology is at home also in blank at present.
Accompanying drawing explanation
Fig. 1 is the exploded perspective structure chart of the present invention；
Fig. 2 is that the opening of the present invention partly cuts open structure chart；
Fig. 3 is that the closed mode of the present invention partly cuts open structure chart；
Fig. 4 is the ON button of present invention structural representation when pressing；
Fig. 5 is that the structural representation that rear power supply turns on pressed by the ON button of the present invention；
Fig. 6 is the automatic schematic diagram disconnected after current overload of the present invention；
Fig. 7 is the OFF button of present invention schematic diagram when pressing；
Fig. 8 is that the schematic diagram that rear circuit disconnects pressed by the OFF button of the present invention；
Fig. 9 is the structural representation of OFF slide block of the present invention.
Figure labelling: 1, OFF button；2, ON button；3, shell rack；4, OFF slide block；5, reset is sliding
Block；6, ON slide block；7, sheet metal support；8, rack shell；9, drain pan；10, anti-hydraulic pressure plate；
11, moved end；12, static terminal；13, metal clips；14, button spring；15, sliding block spring；
16, movable contact；17, stationary contact；18, waterproof cover；41, reset push rod.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are only used for
The present invention is described rather than limits the scope of the present invention.In addition, it is to be understood that reading instruction of the present invention
Content after, the present invention can be made various changes or modifications by those skilled in the art, these shapes of equal value
Formula falls within the application appended claims limited range equally.
As Figure 1-3, embodiments of the present invention relate to a kind of three phase electric machine open-phase protection switch and
Using method, the structure of described protection switch includes shell rack 3, rack shell 8 and drain pan 9, institute
Shell rack 3 and the drain pan 9 stated are interlocked, and the most internally installed have a rack shell 8, described outside
ON button 2 and OFF button 1 has been mounted side by side in cage 3, and the lower end of described ON button 2 is horizontal
Slidably connecting ON slide block 6, inclined-plane and the OFF slid laterally are passed through in the lower end of described OFF button 1
Slide block 4 contacts, and the side of described OFF slide block 4 is connected with reset slide block 5 by sliding block spring 15,
The side of described ON button 2 is contacted with reset slide block 5 by inclined-plane, described reset slide block 5 times
In the rack shell 8 of end, sheet metal support 7 is installed；
Three moved ends 11 and three static terminals 12 are installed in described sheet metal support 7 relatively, three
The metal clips 13 that upper end extend between OFF slide block 4 and reset slide block 5 is installed on moved end 11,
The movable contact 16 corresponding with the stationary contact 17 on static terminal 12 is installed in the middle part of this metal clips 13.
During use, as illustrated in figures 4-5, when ON button 2 is pressed, the ON slide block that ON button 2 is arranged
6 synchronize downwards, and meanwhile ON slide block 6 forces reset slide block 5 forward slip, simultaneously reset slide block 5
The metal clips 13 of riveting, metal clips 13 it is respectively cooperating with on three moved end 11 in promotion protection device
Affected short time set by external force to bounce, made to be respectively cooperating with on three metal clips 13 movable contact 16 of riveting
Connection conducting three-phase electricity is coordinated with the stationary contact 17 being respectively cooperating with riveting on three static terminals 12 moment simultaneously
Road, and protect on-state always.
Then, when ON slide block 6 downward stroke exceedes reset slide block 5, reset slide block 5 loses pushing away forward
Power however affected return original place by sliding block spring 15, thus reset slide block 5 is limited in this, makes reset sliding
Block 5 and ON button 2 is always maintained at the state being pressed.
As shown in Figure 6, when threephase motor has any phase power phase shortage, additionally biphase current will
Increase therewith, when electric current increases above load current value, additionally metal clips 13 mistake of two-phase power supply
Hot automatic separating disconnects any phase power supply, and motor will be automatically stopped operating, reach phase-defect of motor
The purpose of protection, switchs as only restarted after failture evacuation.
As Figure 7-8, drive when OFF button 1 is pressed OFF slide block 4 to front-slider, push away simultaneously
Being respectively cooperating with the metal clips 13 of riveting in dynamic protection device on three moved end 11, metal clips 13 is subject to
External force affects short time set spring, makes to be respectively cooperating with on metal clips 13 movable contact 16 of riveting and three
Being respectively cooperating with the stationary contact 17 moment separation cut three-phase circuit of riveting on static terminal 12, OFF slide block 4 exists
While promoting metal clips 13, ON slide block 6 is also pushed into disengaging by the reset push rod 41 on OFF slide block 4
Outside the stop zone of reset slide block 5, ON button 2 by button spring 14 affected drive ON slide block 6 and
ON slide block 6 is acted on by sliding block spring 15 and returns to original place simultaneously, removes OFF button after dump success
1 pressure applied, OFF button 1 is affected by button spring 14 after losing pressure to be back in situ, simultaneously
OFF slide block 1 also loses the pressure of OFF button 1 to be affected by sliding block spring 15 and is also back in situ, as needed
Restart switch, press ON button 2 and can return to the first step, form do action.
Supplement as to the one of technical solutions according to the invention, described moved end 11 and static terminal 12
The most L-shaped, both bottom end all stretch out the outside at sheet metal support 7, this moved end 11 and quiet
Part that what terminal 12 was the most L-shaped protrude horizontally up can be connected with outside terminals.
Supplement as to the one of technical solutions according to the invention, described ON button 2 and OFF button
The internal sleeve of 1 is connected to the button spring 14 that lower end is withstood with shell rack 3, can guarantee that ON button 2 and OFF
Button 1 carries out quick homing.
Further, one end of described ON slide block 6 is provided with the lower end inside wall top with ON button 2
The sliding block spring 15 lived, just can make guarantee ON slide block 6 energy homing because of sliding block spring 15.
As preferably, waterproof cover 18 is stamped in the outside of described ON button 2 and OFF button 1, described
The outside of waterproof cover 18 is installed fixing by anti-hydraulic pressure plate 10, has waterproof action, due to ON button 2
And leave gap between OFF button 1 and shell rack 3, so there is the risk into water, do not use
Time must utilize waterproof cover 18 that ON button 2 and OFF button 1 is protected.
Further, as it is shown in figure 9, the bottom end of described OFF slide block 4 is extended with multiple to ON slide block 6
Position push rod 41, OFF slide block 4 by promote slide when utilize reset push rod 41 pushed home, make ON by
Button 2 can rise homing.
Present invention utilizes the characteristic principle of bimetallic thermal deformation, it is provided that a kind of structure is simple and clear, compact,
Being conducive to operation and a kind of motor three-phase lack phase protection device judged and principle, major function has: should
Motor three-phase lack phase protection switch, makes sheet metal heating generation action by electric current, works as three-phase electricity
When motivation has any phase power phase shortage, additionally biphase current will increase therewith, when electric current increases to one
When determining current value, additionally any phase power supply of the power supply of two-phase disconnects, and motor will be automatically stopped fortune
Turn, reach the purpose of motor phase failure protection, need motor normal operation to be necessary for getting rid of the event of power supply
Barrier, motor could recover to run well, and recovering must be by manual operation button when running well, ability
Connect three phase mains, and independent on an off can also be realized, be effectively improved motor and using
Safety in journey, is a kind of uniqueness, novel motor three-phase lack phase protection switch, this skill at present
Art is at home also in blank.
Claims (7)
1. the open-phase protection switch of a three phase electric machine, including shell rack (3), rack shell (8) and the end
Shell (9), it is characterised in that described shell rack (3) and drain pan (9) are interlocked, both
Between internally installed have rack shell (8), ON has been mounted side by side in described shell rack (3)
Button (2) and OFF button (1), the lower end of described ON button (2) slides laterally connection to be had
ON slide block (6), inclined-plane and the OFF slid laterally are passed through in the lower end of described OFF button (1)
Slide block (4) contacts, the side of described OFF slide block (4) by sliding block spring (15) with
Reset slide block (5) is connected, and the side of described ON button (2) is by inclined-plane and reset slide block (5)
Contact, in the rack shell (8) of described reset slide block (5) lower end, sheet metal is installed and props up
Frame (7)；
Three moved end (11) and three quiet ends are installed in described sheet metal support (7) relatively
Son (12), three moved end (11) is provided with upper end and extend into OFF slide block (4) and reset
Metal clips (13) between slide block (5), this metal clips (13) middle part is provided with and quiet end
The corresponding movable contact (16) of stationary contact (17) on son (12).
The open-phase protection switch of three phase electric machine the most according to claim 1, it is characterised in that: described
Moved end (11) and static terminal (12) are the most L-shaped, and both bottom end all stretch out at metal
The outside of plate rack (7).
The open-phase protection switch of three phase electric machine the most according to claim 1, it is characterised in that: described
The internal sleeve of ON button (2) and OFF button (1) is connected to lower end and withstands with shell rack (3)
Button spring (14).
The open-phase protection switch of three phase electric machine the most according to claim 1, it is characterised in that: described
One end of ON slide block (6) is provided with the slide block bullet that the lower end inside wall with ON button (2) withstands
Spring (15).
The open-phase protection switch of three phase electric machine the most according to claim 1, it is characterised in that: described
Waterproof cover (18), described waterproof cover are stamped in the outside of ON button (2) and OFF button (1)
(18) outside is installed fixing by anti-hydraulic pressure plate (10).
The open-phase protection switch of three phase electric machine the most according to claim 1, it is characterised in that: described
The bottom end of OFF slide block (4) is extended with reset push rod (41) to ON slide block (6).
7. a using method for open-phase protection according to claim 1 switch, specifically comprises the following steps that
A (), when ON button (2) is pressed, the upper ON slide block (6) arranged of ON button (2) synchronizes
Downwards, meanwhile ON slide block (6) forces reset slide block (5) forward slip, simultaneously
It is respectively cooperating with riveting on three moved end (11) in reset slide block (5) promotion protection device
Metal clips (13), metal clips (13) is affected short time set by external force and is bounced, made
Movable contact (16) and three static terminals of riveting it are respectively cooperating with on three metal clips (13)
(12) stationary contact (17) moment simultaneously being respectively cooperating with riveting on coordinates connection conducting three-phase
Circuit, and protect on-state always；
When () ON slide block (6) downward stroke exceedes reset slide block (5) b, reset slide block (5) loses
Thrust forward however returned to original place by sliding block spring (15) impact, thus the slide block that will reset
(5) it is limited in this, makes reset slide block (5) and ON button (2) be always maintained at being pressed
State；
C (), when threephase motor has any phase power phase shortage, additionally biphase current will increase therewith
Greatly, when electric current increases above load current value, the additionally metal clips of two-phase power supply
(13) overheated automatic separating disconnects any phase power supply, and motor will be automatically stopped operating,
Reach the purpose of motor phase failure protection, as switch only need to be restarted i.e. after failture evacuation
Can；
D () drives OFF slide block (4) to front-slider when OFF button (1) is pressed, promote guarantor simultaneously
The metal clips (13) of riveting, gold it is respectively cooperating with on three moved end (11) in protection unit
Genus shell fragment (13) is affected short time set by external force and is bounced, and makes metal clips (13) upper respectively
The movable contact (16) coordinating riveting is respectively cooperating with the quiet of riveting on three static terminals (12)
Contact (17) moment separation cut three-phase circuit, OFF slide block (4) is promoting metal elastic
While sheet (13), the reset push rod (41) on OFF slide block (4) is also by ON slide block (6)
Being pushed into outside the stop zone departing from reset slide block (5), ON button (2) is by button spring
(14) impact drives ON slide block (6) and ON slide block (6) by sliding block spring (15)
Effect returns to original place simultaneously, removes and apply OFF button (1) after dump success
Pressure, OFF button (1) affected by button spring (14) after losing pressure be back to former
Position, OFF slide block (1) also loses the pressure of OFF button (1) by sliding block spring (15) simultaneously
Impact be also back in situ, as switch need to be restarted, press ON button (2) and can return
To the first step, form do action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252388.9A CN104810220B (en) | 2015-05-15 | 2015-05-15 | The open-phase protection switch of a kind of three phase electric machine and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252388.9A CN104810220B (en) | 2015-05-15 | 2015-05-15 | The open-phase protection switch of a kind of three phase electric machine and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104810220A CN104810220A (en) | 2015-07-29 |
| CN104810220B true CN104810220B (en) | 2016-09-28 |
Family
ID=53694967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510252388.9A Expired - Fee Related CN104810220B (en) | 2015-05-15 | 2015-05-15 | The open-phase protection switch of a kind of three phase electric machine and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104810220B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110286U (en) * | 1991-12-20 | 1992-07-15 | 周天飞 | Overload loss-phase protective switch |
| KR200218834Y1 (en) * | 2000-10-13 | 2001-04-02 | 엘지산전주식회사 | construction of shifter and lever in thermal overload relay for protecting phase deficiency motor |
| US6480079B1 (en) * | 2002-04-25 | 2002-11-12 | Texas Instruments Incorporated | Electrical circuit breaker device |
| DE602008001408D1 (en) * | 2007-07-12 | 2010-07-15 | Ls Ind Systems Co Ltd | Trip unit module and circuit breaker with it |
| CN204558396U (en) * | 2015-05-15 | 2015-08-12 | 宁波市士鑫电器有限公司 | A kind of open-phase protection switch of three phase electric machine |
-
2015
- 2015-05-15 CN CN201510252388.9A patent/CN104810220B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104810220A (en) | 2015-07-29 |
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Granted publication date: 20160928 Termination date: 20180515 |