CN201449957U - Magnetic latching load switch for electric energy meter - Google Patents
Magnetic latching load switch for electric energy meter Download PDFInfo
- Publication number
- CN201449957U CN201449957U CN2008201244075U CN200820124407U CN201449957U CN 201449957 U CN201449957 U CN 201449957U CN 2008201244075 U CN2008201244075 U CN 2008201244075U CN 200820124407 U CN200820124407 U CN 200820124407U CN 201449957 U CN201449957 U CN 201449957U
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- CN
- China
- Prior art keywords
- load switch
- energy meter
- electric energy
- magnetic
- release lever
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a magnetic latching load switch for an electric energy meter, which comprises a hand-operated component, a contact system, a tripping system and a housing, wherein the hand-operated component comprises a hand-operated shift lever and a force transmission four-bar linkage mechanism; the contact system comprises a wiring terminal, an arm-type single contact and an arc-extinguishing sheet grating; the tripping system comprises a tripping mechanism and a control coil component; and the control coil component adopts the control manner of the magnetic latching. The magnetic latching load switch for the electric energy meter has small and exquisite volume, and is suitable to be mounted on the electric energy meter; and the magnetic latching load switch is provided with the specially designed hand operated shift lever, which can be controlled to open or close by control signals or through hand operated way directly, and the performance is very reliable.
Description
Technical field
The utility model relates to a kind of magnetic and keeps on-load switch, relates in particular to a kind of magnetic maintenance on-load switch that is used in the electric energy meter, has manual driving lever, belongs to the low voltage electrical apparatus technology field.
Background technology
On-load switch is a kind of simple arc-control device that has, can the on-load branch, close the control apparatus of circuit.It can certain load current and the overload electric current of break-make, but can not interrupting short circuit, and the use of must connecting with high-tension fuse is excised short circuit current by fuse.In the distribution line below 10 kilovolts, the use of on-load switch is very extensive.
The on-load switch that uses on existing electric energy meter mainly contains two types: one. adopt the magnetic latching relay of built-in mounting means.It is convenient that magnetic latching relay has control, and driving power consumption is little, the advantage that volume is little.But be subjected to the restriction of its volume and power consumption, there is the unsettled defective of performance mostly in existing magnetic latching relay, and the built-in enclosure interior that is installed on electric energy meter, and its operate condition can not obtain visual indication, has potential safety hazard.Two. adopt the circuit breaker of external mounting means.The dependable performance of circuit breaker has operate condition indication intuitively.Most circuit breaker can adopt the mode of operation of manual closing, can avoid the unconscious combined floodgate that powers on that the person and household electrical appliance are brought injury like this.But because the volume of circuit breaker is bigger, can only be installed in the electric energy meter outside, make the wiring inconvenience of control line and main circuit, bring difficulty for user's installation.In addition, the cost of most of circuit breakers is higher, is unfavorable for saving resource.
At present, power department generally reflects the problem that has resident and commercial power difficult charge.In order fundamentally to solve the problem of check meter difficulty, difficult charge, power department is being widelyd popularize prepayment meter.This prepayment meter is becoming the electric energy meter Developing Trend in Technology with its multifunction and remote controlled characteristics.But prepayment meter is subjected to existing on-load switch technology limitation, has been subjected to certain restriction when large-scale promotion is used.
Summary of the invention
The purpose of this utility model is to provide a kind of electric energy meter to keep on-load switch (abbreviate magnetic as and keep on-load switch) with magnetic.This magnetic keeps on-load switch can be installed on the binding post of electric energy meter, has tangible operate condition indication.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of electric energy meter keeps on-load switch with magnetic, comprise contact system, tripping system and housing, described contact system is made up of binding post, arm-type single contact and arc extinguishing grid pieces, described tripping system is made up of tripping mechanism and control coil assembly, described contact system and tripping system are enclosed in the described housing, it is characterized in that:
Described electric energy meter keeps on-load switch also to have manual operational unit with magnetic, described manual operational unit is made up of manual operation driving lever 9 and linkage, described manual operation driving lever 9 has the manual operation position that stretches out in described housing, and described housing is provided with realizes the spacing of 9 two kinds of hold modes of described manual operation driving lever;
The operate condition of described manual operation driving lever 9 passes to the connecting rod 23 in the described linkage, and described connecting rod 23 drives connecting rods 14 and rotates on the fulcrum of release lever 6, by pushing piece 15 action is passed to moving contact in the described contact system.
Wherein, described control coil assembly has the control lead-in wire that stretches out in described housing.
Described tripping mechanism is by release lever 6, release lever 11, connecting rod 14 and return helical torsional spring 4,10 and form, and an end of described release lever 11 and armature component 12 are fitted, and guarantees the state of fitting by returning helical torsional spring 10; The other end is provided with the groove that is used to pin release lever 6.
One end of described release lever 6 is pinned by release lever 11, and the other end is provided with the fulcrum that rotates for connecting rod 14.
Electric energy meter provided by the utility model keeps the on-load switch volume small and exquisite with magnetic, very suitable being installed on the electric energy meter; It has custom-designed manual operation driving lever, both can control its switching with control signal, also can be directly by manually carrying out opening and closing operations, and performance is very reliable.
Description of drawings
Below be with specific embodiment the utility model to be further described in conjunction with the accompanying drawings.
Fig. 1 is the three-dimensional outline drawing that this magnetic keeps on-load switch;
Fig. 2 is that this magnetic keeps the internal structure schematic diagram after on-load switch is opened upper shell;
Fig. 3 is the structural representation that this magnetic keeps functional unit a kind of operate condition in housing of on-load switch;
Fig. 4 is the structural representation that this magnetic keeps the coil block in the on-load switch;
Fig. 5 is the energy meter terminal structural representation that keeps on-load switch to be used with this magnetic;
Fig. 6 is that this magnetic keeps on-load switch and energy meter terminal assembling schematic diagram.
Embodiment
Fig. 1 has shown that this electric energy meter keeps the three-dimensional profile of on-load switch with magnetic.This magnetic keeps on-load switch integral body to be cuboid, and its compact appearance can satisfy the wiring requirement of electric energy meter.Wherein, manual operation driving lever 9, conducting strip 1, still 22 and control lead-in wire 21 stretch out in housing 2.
As shown in Figures 2 and 3, this electric energy meter keeps the manual operational unit of on-load switch to be made up of manual operation driving lever 9 and linkage with magnetic.Manual operation driving lever 9 has the manual operation position that stretches out in housing 2, and housing 2 is provided with two kinds of hold modes spacing of manual operation driving lever 9.Linkage is made up of connecting rod 8, connecting rod 23 and pin 5, and this linkage can be reliably passes to connecting rod 23 with the operate condition of manual operation driving lever 9.
As Fig. 2 and shown in Figure 4, this electric energy meter keeps the tripping system of on-load switch to be made up of tripping mechanism and control coil assembly with magnetic.Control coil assembly wherein is made up of bobbin 28, winding 13, magnetic conduction heel piece 26, conducting magnet core 27 and armature component 12, and has control lead-in wire 21 to stretch out in housing 2 outsides.Armature component 12 is an I shape, by pole piece 25 and permanent magnet 29 by 24 injection mo(u)ldings of some engineering plastics.This armature component 12 is the spinning movement state in the control coil assembly.
The control mode that the control coil assembly adopts magnetic to keep.When its work, by control lead-in wire 21 input control signals.Control signal can be the form of pulse.This control signal forms magnetic field by winding 13 in the magnetic conductive loop of magnetic conduction heel piece 26 and conducting magnet core 27 formations, the magnetic field interaction of this magnetic field and permanent magnet 29, the applying position of change armature component 12.Behind blackout, armature component 12 can rely on permanent magnet 29 to keep the state of its applying, up to there being reverse signal to occur.
Tripping mechanism is by release lever 6, release lever 11, connecting rod 14 and return helical torsional spring 4,10 and form.Wherein, release lever 11 1 ends and armature component 12 are fitted, and by returning the state that helical torsional spring 10 guarantees its applying; The other end is provided with groove, pins release lever 6; Release lever 6, the one end is pinned by release lever 11, and the other end is provided with the fulcrum that rotates for connecting rod 14; Connecting rod 14 is provided with rotating shaft and connecting rod 23 is rotationally connected.
As shown in Figure 2, this electric energy meter keeps the contact system of on-load switch to be made up of binding post, arm-type single contact and arc extinguishing grid pieces 19 with magnetic; Binding post is stretched out with housing 2 by conducting strip 1 and still 22 and forms; Arm-type single contact is made up of conducting strip 1, reed 3, moving contact 17, still 22, fixed contact 18, compression spring 16 and pushing piece 15; Reed 3 is provided with a plurality of corresponding holes, and these holes are used to assemble moving contact 17 and conducting strip 1, and above-mentioned three's riveted joint is one, forms the moving plate assembly; Moving plate assembled and pushing piece 15 are provided with compression spring 16 between moving contact 17 and pushing piece 15; Still 22 is provided with corresponding hole, with fixed contact 18 riveted and fixed on still 22; Pushing piece 15 is connected with connecting rod 14, the operating state of connecting rod 14 is passed to being provided with of moving contact 17. arc extinguishing grid pieces 19 by pushing piece 15 can effectively improve the arc extinguishing ability that this magnetic keeps on-load switch, improves the reliability that this magnetic keeps on-load switch.
This magnetic keeps the working method of on-load switch to be closing by hand or to operate a switch.Wherein, operate a switch with the control of retaining coil magnetic assembly.When magnetic keeps on-load switch to have only its tripping mechanism to recover effective, just allow closing by hand and operate a switch.
This magnetic maintenance on-load switch can be by manual driving lever with its closure.Its disconnection has two kinds of modes of operation, and one disconnects it by the manual operation driving lever, and it two disconnects control by its inner control coil.
Particularly, by control lead-in wire 21 input snap close signals, armature component 12 operate conditions change, and change the position of the fulcrum that is provided with on the release lever 6 by release lever 11, form the rotating fulcrum of connecting rod 14 when work, and tripping mechanism is effective, and connecting rod 14 rotates effectively.Manual operation this moment, the position of change manual operation driving lever 9, manual operation driving lever 9 passes to connecting rod 23 with the operate condition of manual operation driving lever 9 reliably by above-mentioned linkage.Drive connecting rods 14 by connecting rod 23 again and on the fulcrum of release lever 6, rotate, action is passed to moving contact by pushing piece 15.Can realize that manual this magnetic of operation keeps on-load switch this moment.
When control lead-in wire 21 input trip signals, armature component 12 operate conditions change, and change the position of the fulcrum that is provided with on the release lever 6 by release lever 11, have destroyed the rotating fulcrum of connecting rod 14, realize threading off.Can keep on-load switch to disconnect this magnetic this moment, and closed invalid.
Fig. 5 and Fig. 6 have shown that this magnetic keeps a kind of mounting means of on-load switch in energy meter terminal.Keep on-load switch 29 to be encased in the energy meter terminal 30 magnetic, and expose the manual operation driving lever that meets magnetic maintenance on-load switch 29.Its driving lever can identify the state of its action when magnetic kept on-load switch 29 actions like this.This magnetic keeps on-load switch can satisfy the functional requirement of electric energy meter to switch element fully.
It is emphasized that; above-mentioned control coil, dropout, snap close, the contact system of simple change; for example control coil is changed into the suction-type coil system; change contact system into bridge-type double break point contact system etc.; all be the conventional design that persons skilled in the art can realize easily, therefore also within protection range of the present utility model.
Claims (4)
1. an electric energy meter keeps on-load switch with magnetic, comprise contact system, tripping system and housing, described contact system is made up of binding post, arm-type single contact and arc extinguishing grid pieces, described tripping system is made up of tripping mechanism and control coil assembly, described contact system and tripping system are enclosed in the described housing, it is characterized in that:
Described electric energy meter keeps on-load switch also to have manual operational unit with magnetic, described manual operational unit is made up of manual operation driving lever (9) and linkage, described manual operation driving lever (9) has the manual operation position that stretches out in described housing, and described housing is provided with realizes the spacing of (9) two kinds of hold modes of described manual operation driving lever;
The operate condition of described manual operation driving lever (9) passes to the connecting rod (23) in the described linkage, described connecting rod (23) drives connecting rod (14) and rotates on the fulcrum of release lever (6), by pushing piece (15) action is passed to moving contact in the described contact system.
2. electric energy meter as claimed in claim 1 keeps on-load switch with magnetic, it is characterized in that:
Described control coil assembly has the control lead-in wire that stretches out in described housing.
3. electric energy meter as claimed in claim 1 keeps on-load switch with magnetic, it is characterized in that:
Described tripping mechanism is by release lever (6), release lever (11), connecting rod (14) and return helical torsional spring and form, and an end of described release lever (11) and armature component (12) are fitted, and guarantees the state of fitting by returning helical torsional spring; The other end is provided with the groove that is used to pin release lever (6).
4. electric energy meter as claimed in claim 3 keeps on-load switch with magnetic, it is characterized in that:
One end of described release lever (6) is pinned by release lever (11), and the other end is provided with the fulcrum that rotates for connecting rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201244075U CN201449957U (en) | 2008-12-04 | 2008-12-04 | Magnetic latching load switch for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201244075U CN201449957U (en) | 2008-12-04 | 2008-12-04 | Magnetic latching load switch for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201449957U true CN201449957U (en) | 2010-05-05 |
Family
ID=42554680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008201244075U Expired - Lifetime CN201449957U (en) | 2008-12-04 | 2008-12-04 | Magnetic latching load switch for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201449957U (en) |
-
2008
- 2008-12-04 CN CN2008201244075U patent/CN201449957U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUEQING LIHUI ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: ZHEJIANG PRESTIGE ELECTRONIC CO., LTD. Effective date: 20120419 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325608 WENZHOU, ZHEJIANG PROVINCE TO: 325609 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120419 Address after: 325609, Yueqing, Zhejiang, Yueqing Po Chi Special Industrial Park (FAI science and technology inside) Patentee after: Yueqing Lihui Electrical Appliance Co., Ltd. Address before: 325608 Tiancheng Industrial Zone, Zhejiang, Yueqing Patentee before: Zhejiang Prestige Electronic Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |
|
| CX01 | Expiry of patent term |