CN207425733U - A kind of motor drives bridging contact on-load switch - Google Patents
A kind of motor drives bridging contact on-load switch Download PDFInfo
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- CN207425733U CN207425733U CN201721066294.3U CN201721066294U CN207425733U CN 207425733 U CN207425733 U CN 207425733U CN 201721066294 U CN201721066294 U CN 201721066294U CN 207425733 U CN207425733 U CN 207425733U
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- spring
- contact
- load switch
- pushing block
- gear
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Abstract
The utility model discloses a kind of motors to drive bridging contact on-load switch, including setting left reed and right reed on the shell；One motor is set in shell, and motor drives a gear；Gear drives a gear pushing block, and pushing block front end and the movable contact spring group of gear pushing block link；The middle part of gear pushing block sets a spring retention chamber, and a spring is set in the spring retention chamber；The rear portion of gear pushing block sets a rack straight panel, and rack group is connected in the rack straight panel；The rack group is engaged with gear.Compared with prior art, the utility model solve on-load switch intelligent electric meter using middle appearance high current run when because caused by electric arc contact burn, be bonded and circuit in there is larger surge current when contact burn, melt and explode the phenomenon that；And the phenomenon that improving the anti-stationary magnetic field ability of on-load switch, effectively preventing stealing.
Description
Technical field
The utility model is related to electric product more particularly to a kind of contactor, particularly a kind of motor driving bridging contact
On-load switch.
Background technology
In the prior art, at present, the contact system of the built-in on-load switch used in intelligent electric meter has single contact or double tactile
The problem of two kinds of point, but is all/static contact spring piece draws the form of connection load circuit respectively, this contact form is contact
Current interruption ability is extremely limited.And for needing to switch in intelligent electric meter for the even greater load of 60A~120A electric currents, it is this
The current interruption ability of contact system will directly influence intelligent electric meter reliability of operation.
According to statistical analysis of the national grid to intelligent electric meter operation troubles, the on-load switch in intelligent electric meter use is common
Failure has following four：First, during the operation of high current scene, there is automatic disconnection（Tripping）Phenomenon.2nd, during the operation of high current scene,
There is contact to burn, be bonded phenomenon.When 3rd, electric energy meter is run, due to there is larger surge current in circuit, contact is caused to be burnt,
Fusing and explosion phenomenon.4th, by being disturbed be subject to high-intensity magnetic field, stealing electricity phenomenon easily occurs.
Analysis more than failure as it can be seen that have in four problems two it is related with the current interruption ability of contact, if load can be improved
The current interruption ability of switch will greatly reduce on-load switch in the running failure percentage of intelligent electric meter.
On the other hand, anti-stationary magnetic field interference performance of the solution of above-mentioned Article 4 problem depending on on-load switch, it is existing
The electromagnetic type on-load switch largely used in intelligent electric meter substantially has very big shortcoming in this regard.
In order to solve the four major problem of the above-mentioned prior art, people start to improve electromagnetic type on-load switch, carry out motor and bear
The development of lotus switch.
Such as No. 201220474178.6 of Nantong Taifu Electrical Appliances Manufacturing Co., Ltd's application, it is entitled that " electronic load is opened
The Chinese utility model patent of pass ", technical solution are：" a kind of electric load switch is grasped including on-load switch, on-load switch
Make mechanism, the operating mechanism of on-load switch is connected with Manual operation handle, the operating mechanism and electrically operated device of on-load switch
Connection.The utility model is rational in infrastructure, and electric operating is added on original operating mechanism, can not only be manually operated, while can
To realize remote operation.”
It can be seen that by analysis：The patented technology is the equipment being applied on large scale equipment, it is impossible to be used in intelligent electric meter
This midget plant, switching electric current is among the occasion of 100 Amps.
Therefore, it is necessary to which designing one kind is adapted to intelligent electric meter, small on-load switch, switch contact contact can
It leans on, switches 60A~120A electric currents, when even greater electric current does not generate excessive electric arc, due to electric arc discharges contact is not caused to burn
It ruins, melt；The on-load switch contact overload capability is strong, is disturbed from high-intensity magnetic field.
Utility model content
The purpose of this utility model is that there is " high current scene operation for electromagnetic type on-load switch in the prior art
When, there is automatic disconnection（Tripping）Phenomenon and there is contact to burn, be bonded phenomenon.When having larger surge current in circuit, cause
Contact burns, melts and explosion phenomenon；When being disturbed be subject to high-intensity magnetic field, stealing electricity phenomenon easily occurs " deficiency and one kind is provided
Motor drives bridging contact on-load switch.
The utility model is realized by using following technical scheme.
Manufacture and design a kind of motor driving bridging contact on-load switch, the on-load switch includes a shell, on the shell
Left reed and right reed are set；
The part that the left reed extends to enclosure connects left stationary contact, and the right reed extends to enclosure
Part connects right stationary contact；
One motor is set in shell, and the motor drives a gear；
One gear pushing block is set in shell, and pushing block front end and the movable contact spring group of gear pushing block link；
The middle part of gear pushing block sets a spring retention chamber, and a spring is set in the spring retention chamber；Gear pushing block
Rear portion one rack straight panel is set, rack group is connected in the rack straight panel；The rack group is engaged with gear.
One left movable contact is set in the movable contact spring group, and the left movable contact is corresponding with left stationary contact position；
One right movable contact is separately set in movable contact spring group, and the right movable contact is corresponding with right stationary contact position；
The left movable contact is set with the relative distance of left stationary contact and the relative distance of right movable contact and right stationary contact
To be less than the length of rack group；
The height of the spring is set greater than the length of rack group；
Above the rack straight panel, a spring stop with cage connection is set, for supporting only spring, the spring catch
One spring pocket axis is set on plate, for being socketed spring.
The spring retention chamber has a spring top surface, and when gear pushing block moves down, spring top surface can be pressed in spring
Top surface.
It is electrically connected between the left movable contact and right movable contact.
Compared with prior art, the utility model is the motor driving bridging contact on-load switch of small size, and contact holds
It is big to measure big spacing, when contact is closely firm, and contact is resolute rapidly when disconnecting；The utility model solves on-load switch in intelligence
Can ammeter using middle appearance high current run when because contact is caused to burn, be bonded during electric arc and circuit in occur compared with billow
The phenomenon that contact burns, melts and explodes when gushing electric current；And the anti-stationary magnetic field ability of on-load switch is improved, it is effectively prevented
The phenomenon that stealing.
The utility model is versatile, can be applied among multiple product.
Description of the drawings
The utility model is further detailed below with attached drawing, but the embodiment in attached drawing is not formed pair
Any restrictions of the utility model；
Fig. 1 is that the motor of utility model drives the main schematic diagram of structure of bridging contact on-load switch；
Fig. 2 is that the motor of utility model drives the schematic diagram of bridging contact on-load switch middle gear pushing block；
Fig. 3 is that the motor of utility model drives the structural upright schematic diagram of bridging contact on-load switch.
Specific embodiment
The utility model is illustrated with reference to specific embodiment.
As shown in FIG. 1 to 3, a kind of motor driving bridging contact on-load switch is manufactured and designed, the on-load switch includes
One shell 1 sets left reed 7 and right reed 13 on shell 1；
The left reed 7 extends to the part inside shell 1 and connects left stationary contact 9, and the right reed 13 extends to shell 1
Internal part connects right stationary contact 12；
One motor 6 is set in shell 1, and the motor 6 drives a gear 3；
One gear pushing block 4 is set in shell 1, and pushing block front end 43 and the movable contact spring group 10 of gear pushing block 4 link；
The middle part of gear pushing block 4 sets a spring retention chamber 41, and a spring 5 is set in the spring retention chamber 41；Tooth
The rear portion for taking turns pushing block 4 sets a rack straight panel 44, and rack group 45 is connected in the rack straight panel 44；The rack group 45 and gear
3 engagements.
One left movable contact 8 is set in the movable contact spring group 10, and the left movable contact 8 is corresponding with left 9 position of stationary contact；
One right movable contact 11 is separately set in movable contact spring group 10, and the right movable contact 11 is opposite with right 12 position of stationary contact
It should；
The relative distance and right movable contact 11 of the left movable contact 8 and left stationary contact 9 with right stationary contact 12 it is opposite away from
From the length for being set smaller than rack group 45；
The height of the spring 5 is set greater than the length of rack group 45；
Above the rack straight panel 44, a spring stop 2 being connected with shell 1 is set, it is described for supporting only spring 5
One spring pocket axis 21 is set on spring stop 2, for being socketed spring 5.
The spring retention chamber 41 has a spring top surface 42, and when gear pushing block 4 moves down, spring top surface 42 can be pressed in
The top surface of spring 5.
It is electrically connected between the left movable contact 8 and right movable contact 11.
As shown in FIG. 1 to 3, since the contact design of the utility model is into bridge-type double break form so that each disjunction
The electric arc generated during action between contact is divided into two sections, can increase the arcing voltage of electric arc, while using between two sections of electric arcs
Electric power, electric arc is elongated outward, increases the contact surface of electric arc and cold air, rapid heat dissipation and arc extinguishing.In addition, bridge-type is double
Fracture contact form can increase the distance between contact, rapid breaking arc.
The anti-stationary magnetic field interference performance of on-load switch can be improved using electric motor type type of drive, prevent stealing；
Motor 6 is intimate uniform motion when contact closure moves, and can eliminate the rebound generated during contact closure, therefore
Electric arc is generated when avoiding contact closure.
As shown in Fig. 2, slip structure 46 and upper slip structure 47 under being provided at both ends with of rack toothed portion, when the tooth
When wheel 3 goes to skidding position, the gear pushing block 4 is no longer moved upwardly or downwardly, and on the one hand prevents motor 6 from stall occur and showing
As extending the service life of motor 6, on the other hand also ensuring the uniformity of contact operating position.
When the contacts are closed, pressure is generated because of the flexible deformation of movable contact spring group 10 between sound contact, works as electricity at this time
During 6 reverse drive of machine, contact force makes rack group 45 enter tooth at lower slip structure 46 and enters meshing state, and gear 3 drives dynamic
Reed group 10, which continues to move downward, makes the spring 5 being mounted on spring stop 2 generate compressive deformation, until the upper skidding of the other end
Stop at structure 47, when the driving of motor 6 needs to move upwards, the pressure of spring 5 makes rack group 45 enter tooth and enters meshing state,
The position of the lower slip structure 46 of contact closure is driven by gear 3 again, is so moved in circles.
The utility model is the motor driving bridging contact on-load switch of small size, and the big spacing of contact capacity is big, and contact connects
Closely firm when tactile, contact is resolute rapidly when disconnecting；The utility model solves on-load switch and occurs in intelligent electric meter use
High current operation when due to electric arc contact is caused to burn, be bonded and circuit in when there is larger surge current contact burn,
The phenomenon that fusing and explosion；And the phenomenon that improving the anti-stationary magnetic field ability of on-load switch, effectively preventing stealing.
The utility model is versatile, can be applied among multiple product.
More than content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With new thought, there will be changes, this specification content should not be construed as in specific embodiments and applications
Limitation to the utility model.
Claims (6)
1. a kind of motor drives bridging contact on-load switch, it is characterised in that：The on-load switch includes a shell（1）, outside
Shell（1）It is upper that left reed is set（7）With right reed（13）；
The left reed（7）Extend to shell（1）Internal part connects left stationary contact（9）；The right reed（13）It extends to
Shell（1）Internal part connects right stationary contact（12）；
Shell（1）One motor of interior setting（6）, the motor（6）Drive a gear（3）；
Shell（1）One gear pushing block of interior setting（4）, gear pushing block（4）Pushing block front end（43）With movable contact spring group（10）Connection；
Gear pushing block（4）Middle part set a spring retention chamber（41）, the spring retention chamber（41）One spring of middle setting
（5）；Gear pushing block（4）Rear portion set a rack straight panel（44）, the rack straight panel（44）Upper connection rack group（45）；It is described
Rack group（45）With gear（3）Engagement.
2. motor according to claim 1 drives bridging contact on-load switch, it is characterised in that：
The movable contact spring group（10）One left movable contact of upper setting（8）, the left movable contact（8）With left stationary contact（9）Position is opposite
It should；
In movable contact spring group（10）One right movable contact of upper another setting（11）, the right movable contact（11）With right stationary contact（12）Position phase
It is corresponding.
3. motor according to claim 2 drives bridging contact on-load switch, it is characterised in that：
The left movable contact（8）With left stationary contact（9）Relative distance and right movable contact（11）With right stationary contact（12）Phase
It adjusts the distance and is set smaller than rack group（45）Length.
4. motor according to claim 1 drives bridging contact on-load switch, it is characterised in that：
The spring（5）Height be set greater than rack group（45）Length；
In the rack straight panel（44）Top sets one and shell（1）The spring stop of connection（2）, for supporting only spring（5）,
The spring stop（2）One spring pocket axis of upper setting（21）, for being socketed spring（5）.
5. motor according to claim 1 drives bridging contact on-load switch, it is characterised in that：
The spring retention chamber（41）There is a spring top surface（42）, in gear pushing block（4）When moving down, spring top surface（42）Meeting
It is pressed in spring（5）Top surface.
6. motor according to claim 2 drives bridging contact on-load switch, it is characterised in that：
The left movable contact（8）With right movable contact（11）Between be electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721066294.3U CN207425733U (en) | 2017-08-24 | 2017-08-24 | A kind of motor drives bridging contact on-load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721066294.3U CN207425733U (en) | 2017-08-24 | 2017-08-24 | A kind of motor drives bridging contact on-load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207425733U true CN207425733U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721066294.3U Active CN207425733U (en) | 2017-08-24 | 2017-08-24 | A kind of motor drives bridging contact on-load switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359081A (en) * | 2017-08-24 | 2017-11-17 | 珠海美地科技有限公司 | A kind of method and switching device of motor driving bridging contact on-load switch |
| CN111952111A (en) * | 2020-08-04 | 2020-11-17 | 山东普益电气有限公司 | Double-fracture quick vacuum arc extinguish chamber |
-
2017
- 2017-08-24 CN CN201721066294.3U patent/CN207425733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359081A (en) * | 2017-08-24 | 2017-11-17 | 珠海美地科技有限公司 | A kind of method and switching device of motor driving bridging contact on-load switch |
| CN111952111A (en) * | 2020-08-04 | 2020-11-17 | 山东普益电气有限公司 | Double-fracture quick vacuum arc extinguish chamber |
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