CN208240583U - A kind of load switch - Google Patents
A kind of load switch Download PDFInfo
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- CN208240583U CN208240583U CN201820786765.6U CN201820786765U CN208240583U CN 208240583 U CN208240583 U CN 208240583U CN 201820786765 U CN201820786765 U CN 201820786765U CN 208240583 U CN208240583 U CN 208240583U
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- movable plate
- movable
- plate component
- conductive sheet
- load
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Abstract
The utility model discloses a kind of load switches, and including box body and the lid for being covered on box body, load on off mechanism and push card are equipped in box body；Loading on off mechanism includes quiet conductive sheet, moving conductive piece, movable plate component, it is riveted on several stationary contacts of quiet conductive sheet and is riveted on several movable contacts of movable plate component, movable plate component includes movable contact spring and at least one splitter, splitter and movable contact spring are stacked together, one end of movable plate component and one end riveting of moving conductive piece, at least one strip groove is offered on movable plate component, movable plate component is divided into several groups movable plate bar by strip groove, riveting has a movable contact on each movable plate bar, there is the elastic slice pushed for push card in the end of wherein one group of movable plate bar in several groups movable plate bar far from the side riveting of quiet conductive sheet, the end of the movable contact spring of remaining movable plate bar in several groups movable plate bar is equipped with the first bending part.The load switch of the utility model, voltage endurance capability is good, shock resistance current capacity is good, long service life.
Description
Technical field
The utility model relates to a kind of load switches, are applied to intelligent electric meter and high current in particular to one kind
The load switch of the industrial automation control system of load.
Background technique
Currently, load switch is widely used in intelligent electric meter and industrialization automatic control system, and still, existing load
Switch still has many defects, such as voltage endurance capability is small, shock resistance current capacity is poor, volume is big, service life is short, warm raising
Deng bringing some potential safety problems to client to reduce the safety of load switch.
For the above problem in the presence of the prior art, the new load switch of one kind is provided and is of great significance.
Utility model content
It is not only small in size, temperature rise is low, Er Qienai to solve the above problems, the utility model provides a kind of load switch
Pressure energy power is good, shock resistance current capacity is good, long service life.
To achieve the above object, the load switch of the utility model, including box body and the lid for being covered on the box body, institute
It states and is equipped in box body for the load on off mechanism of connecting and disconnecting of the circuit where controlling load and for controlling the load on-off machine
The push card of structure on-off；
If the load on off mechanism includes quiet conductive sheet, moving conductive piece, movable plate component, is riveted on the quiet conductive sheet
Dry stationary contact and several movable contacts for being riveted on the movable plate component, the movable plate component include movable contact spring and at least one point
Flow, the splitter and movable contact spring are stacked together, one end riveting of one end of the movable plate component and the moving conductive piece,
At least one strip groove is offered along its length on the movable plate component, if the movable plate component is divided by the strip groove
Group movable plate bar is done, riveting on each movable plate bar has the movable contact, and wherein one group in the several groups movable plate bar
There are the elastic slice pushed for the push card, the several groups movable plate in the end of movable plate bar far from the side riveting of the quiet conductive sheet
The end of the movable contact spring of remaining movable plate bar in bar is all provided with the first bending part that the direction of the oriented close quiet conductive sheet extends；
The push card can push the several groups movable plate bar mobile to the direction close to or far from the quiet conductive sheet
So that the movable contact and stationary contact point contact or separation.
Preferably, the moving conductive piece includes caulking part and the parallel extensions for being connected to the caulking part, the riveting
Portion and the movable plate assembly staking, the parallel extensions and the movable plate member parallel, and be formed with the movable plate component
Gap.
Preferably, the elastic slice is riveted in the several groups movable plate bar on the movable plate bar of bottom.
Preferably, the quantity of the strip groove is one.
Preferably, the moving conductive on piece position opposite with the strip groove offers strip-shaped hole.
Preferably, the position that the box body is located at below the movable contact offers the first groove, and the lid is located at institute
It states the position above movable contact and offers the second groove.
Preferably, the second bending part is formed at the box opening, institute can be plugged in by being formed on the downside of the lid
State the third bending part on the inside of the second bending part.
Preferably, the opening stretched out for the quiet conductive sheet and moving conductive piece, the opening week are offered on the box body
It encloses and is equipped with reinforcing rib.
Compared with prior art, the beneficial effect of the load switch of the utility model is:
1, by the way that several movable contacts are arranged, and several movable contacts are separately riveted on each movable plate bar,
The contact resistance of load switch can be reduced, temperature rise is reduced, prolong the service life；
2, by the way that the first bending part is arranged in the end of movable contact spring, the rigidity of movable contact spring can be increased, extend load switch
Service life；
3, pass through setting parallel extensions and strip-shaped hole, it is possible to increase contact force improves the shock resistance electric current of load switch
Ability；
4, pass through the first groove of setting and the second groove, it can be ensured that the voltage endurance capability between movable contact and stationary contact；
5, by increasing partition and third groove being arranged, the resistance to pressure energy between load on off mechanism and magnetic path can be improved
Power；
6, by the second bending part of setting and third bending part, box wall can be prevented towards inclination and distortion on the inside of box body.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the load switch of the utility model, and wherein lid and push card are not shown；
Fig. 2 is the decomposition texture schematic diagram of the load switch of the utility model；
Fig. 3 is the decomposition texture schematic diagram of the load on off mechanism of the utility model；
Fig. 4 is the structural schematic diagram of the movable plate component of the utility model, and elastic slice is shown；
Fig. 5 is the structural schematic diagram of the push card of the utility model；
Fig. 6 is the decomposition texture schematic diagram of the magnetic path of the utility model；
Fig. 7 is the attachment structure schematic diagram of the load on off mechanism of the utility model, push card and armature component；
Fig. 8 is the top plate of the utility model and the attachment structure schematic diagram of yoke；
Fig. 9 is the structural schematic diagram of the load on off mechanism of the utility model；
Figure 10 is the structural schematic diagram of the moving conductive piece of the utility model；
Figure 11 is a cross-sectional view of the mechanism loading of the utility model, and it illustrates the first groove, the second groove and the
Three grooves；
Figure 12 is the structural schematic diagram of the lid of the utility model；
Figure 13 is another cross-sectional view of the mechanism loading of the utility model, and it illustrates the second bending parts and third to bend
Portion.
Specific embodiment
In the following, structure and working principle to the utility model etc. are further described in conjunction with attached drawing.
Referring to Fig. 1, Fig. 2, the load switch of the utility model, including box body 100 and the lid 200 for being covered on box body 100,
It is equipped in box body 100 for the load on off mechanism 300 of connecting and disconnecting of the circuit where controlling load and for controlling load on-off machine
The push card 400 of 300 on-off of structure.
Referring to Fig. 3 and Fig. 1, Fig. 2 are combined, load on off mechanism 300 includes quiet conductive sheet 301, moving conductive piece 307, movable plate
Component (not indicated in figure), several stationary contacts 302 for being riveted on quiet conductive sheet 301 and several dynamic touchings for being riveted on movable plate component
Point 303.Several stationary contacts 302 are sequentially arranged from top to bottom along the width direction of quiet conductive sheet 301, if several movable contacts 303 with
Dry stationary contact 302 corresponds.Quiet conductive sheet 301 and moving conductive piece 307 all extend to outside box body 100, specifically, box body 100
On offer the opening stretched out for quiet conductive sheet 301 and moving conductive piece 307 and avoid the opening to reinforce the intensity of the opening
It is deformed on the inside of to box body 100, reinforcing rib 101 can be set around the opening.
As shown in Figure 3, Figure 4, movable plate component includes movable contact spring 305 and at least one splitter 304, and splitter 304 is used for
Share electric current, increases overcurrent area of section, there are two splitters 304 for the above-mentioned tool of load on off mechanism 300.
Splitter 304 and movable contact spring 305 are stacked together, one end of movable plate component and one end riveting of moving conductive piece 307,
At least one strip groove 308 is offered on movable plate component along its length, movable plate component is divided into several groups and moved by strip groove 308
Piece bar (does not indicate) in figure, and riveting has a movable contact 303 on each movable plate bar.Wherein one group of movable plate in several groups movable plate bar
There is the elastic slice 306 pushed for push card 400 in the end of bar far from the side riveting of quiet conductive sheet 301.Push card 400 can push
Several groups movable plate bar is mobile to the direction close to or far from quiet conductive sheet 301 so that movable contact 303 and stationary contact 302 contact or divide
From.
By the way that several movable contacts 303 are arranged, contact resistance can be reduced, reduce temperature rise, and by several movable contacts
303 are separately riveted on each movable plate bar, occur when between one of movable contact 303 and its corresponding stationary contact 302
When arcing, the distance between two contacts is smaller and smaller, but their distance change will not influence the movable contact 303 on other movable plate bars
Movement, from without arcing occurs between one of movable contact 303 and its corresponding stationary contact 302, other movable contacts
303 the phenomenon that can not being operating normally, to extend the service life of the load switch.
The size and movable plate component for comprehensively considering movable contact 303 are taken up space, it is preferable that on movable plate component along its length
Direction only opens up a strip groove 308, which is divided into upper movable plate bar 309 and lower movable plate bar 310 for movable plate component,
In, in view of the structure of push card 400, to ensure its structural strength, elastic slice 306 should be riveted in several groups movable plate bar positioned at most lower
On the movable plate bar of side, that is, descend on movable plate bar 310.The load of the utility model is further illustrated by taking the double-rod structure as an example below
The structure and working principle of switch.
Referring to Fig. 5 and Fig. 7 is combined, push card 400 has the first protrusion 401, the second protrusion 402 and third protrusion
403, elastic slice 306 is inserted between the first protrusion 401 and the second protrusion 402.Wherein, the first protrusion 401 and second
Protrusion 402 is extended downwardly along the width direction of movable plate component, third protrusion 403 along movable plate component length direction to close
The direction of movable contact 303 extends.Under original state, at the corresponding stationary contact 302 of movable contact 303 on lower movable plate bar 310
It is in contact condition in the corresponding stationary contact 302 of the movable contact 303 in discrete state, upper movable plate bar 309, so as to reduce
The thrust of push card 400, i.e., upper movable plate bar 309 is relative to lower movable plate bar 310 closer to quiet conductive sheet 301.
When mobile to the direction far from quiet conductive sheet 301 when push card 400, the first protrusion 401 can push elastic slice 306
It is mobile to the direction far from quiet conductive sheet 301 so that the stationary contact 302 of movable contact 303 corresponding thereto on lower movable plate bar 310
Separation, meanwhile, third protrusion 403 can push movable plate bar 309 mobile to the direction far from quiet conductive sheet 301 so that upper dynamic
The stationary contact 302 of movable contact 303 corresponding thereto on piece bar 309 separates, at this point, the load switch disconnects；When push card 400
When to close to the movement of the direction of quiet conductive sheet 301, the second protrusion 402 can push elastic slice 306 to close to quiet conductive sheet 301
Direction is mobile so that the stationary contact 302 of movable contact 303 corresponding thereto on lower movable plate bar 310 contacts, and upper movable plate bar 309 is at it
Own resilient effect is lower to be resetted so that the corresponding stationary contact 302 of movable contact 303 on upper movable plate bar 309 contacts, at this point, should
Load switch closure.
In the higher situation of temperature, push card 400 is easy to cause movable plate bar 309 to become when pushing upper movable plate bar 309
Shape is bent, so that the corresponding stationary contact of the movable contact 303 of movable plate bar 309 on this to far from quiet 301 direction of conductive sheet
The distance between 302 become smaller, and voltage endurance capability becomes smaller, so as to shorten the service life of the load switch.In order to reduce upper movable plate bar
309 deflection can be arranged to the direction close to quiet conductive sheet 301 in the end of movable contact spring 305 and extend as shown in Fig. 4, Fig. 7
The first bending part 305a, to reduce the deflection of upper movable plate bar 309, load is avoided to open to increase the rigidity of movable contact spring 305
The reduced service life of pass.
Referring to Fig. 6 and Fig. 7 is combined, the reciprocating movement of push card 400 can be driven by magnetic path 500.The magnetic path
500 include coil block, the first yoke 505, the second yoke 506 and armature component, and coil block includes iron core 501, fixed iron
The skeleton 504 of core 501 and the coil 503 being wound on iron core 501, the both ends of skeleton 504 are equipped with for the insertion of stitch 507
Through-hole 5041；Armature component can drive push card 400 mobile to the direction close to or far from quiet conductive sheet 301, so that dynamic touching
Point 303 and the contact of stationary contact 302 or separation comprising plastic casing 509, plastic casing 509 is interior to be equipped with two panels armature 510 and folder
Permanent magnet 508 between two panels armature 510, plastic casing 509 are equipped with the driving for driving push card 400 to move back and forth
Handle 5091；One end of first yoke 505 and one end of the second yoke 506 are separately fixed at the both ends of skeleton 504, the first yoke
The other end of 505 other end and the second yoke 506 is respectively between two sides insertion two panels armature 510；The top of armature component
Equipped with top plate 502, the upper and lower sides of plastic casing 509 are each formed with protruding shaft 5092, correspondingly, on 100 bottom of box body and top plate 502
Offer the shrinkage pool being inserted into for protruding shaft 5092, wherein shrinkage pool 5021 on top plate 502 is it was shown that as shown in figure 12, in order to solid
Determine top plate 502, top plate 502 is equipped with the card slot 5022 being caught in for the first yoke 505 and the second yoke 506.
When stitch 507 connects positive direct-current pulse voltage, the magnetic of the magnetic pole and permanent magnet 508 that are generated after 503 excitation of coil
Pole interaction, same polarity is mutually exclusive, and heteropolarity attracts each other, and armature component is enable to rotate counterclockwise around protruding shaft 5092,
To make the driving handle 5091 on plastic casing 509 drive push card 400 mobile to the direction far from quiet conductive sheet 301, in turn
Separate movable contact 303 and stationary contact 302, load switch disconnects；When stitch 507 connects anti-DC pulse voltage, make armature
Component can be rotated clockwise around protruding shaft 5092, so that driving handle 5091 on plastic casing 509 be made to drive push card 400 to leaning on
The direction of nearly quiet conductive sheet 301 is mobile, and then contacts movable contact 303 and stationary contact 302, load switch closure.
After load switch closure, according to Lorentz force, repulsive force can be generated between movable plate component and moving conductive piece 307,
Between the two apart from smaller, repulsive force is bigger, which can form contact force to movable contact 303 so that movable contact 303 with
Stationary contact 302 is kept in contact, and still, the moving conductive piece 307 of existing load switch is obliquely installed relative to movable plate component mostly,
One end repulsive force for causing movable plate component and moving conductive piece 307 to rivet is very big, and other end repulsive force very little, so as to cause contact
Pressure very little can be easy to open movable contact 303, break down when the load switch is by heavy current impact.In order to keep away
Exempt from the generation of above-mentioned failure, as shown in figure 9, the moving conductive piece 307 of the load switch of the utility model include caulking part 307a and
It is connected to the parallel extensions 307b of caulking part 307a, caulking part 307a and movable plate assembly staking, parallel extensions 307b and dynamic
Piece member parallel, and gap 311 is formed with movable plate component.Before ensuring that movable plate component will not touch moving conductive piece 307
It puts, gap 311 is the smaller the better, and the longer the better for the length of parallel extensions 307b, to increase contact force, improves the load and opens
The shock resistance current capacity of pass.
After load switch closure, the current density on the moving conductive piece 307 of existing load switch is broad in the middle, narrowing toward each end,
It is caused to be concentrated mainly near strip groove 308 repulsive force of upper movable plate bar 309 and lower movable plate bar 310, so as to cause upper dynamic
The repulsive force that piece bar 309 and lower movable plate bar 310 are subject to is uneven and little, and then reduces contact force, reduces the load and opens
The ability of the shock resistance electric current of pass.In order to improve shock resistance current capacity, as shown in Fig. 3, Figure 10, on moving conductive piece 307 with item
The opposite position of shape slot 308 offers strip-shaped hole 3071, which is arranged the portion so that 3071 two sides of strip-shaped hole
Respectively correspond movable plate bar 309 and lower movable plate bar 310, the difference of repulsive force suffered by upper movable plate bar 309 and lower movable plate bar 310
The respective middle position of the two is concentrated on, repulsive force increases, and contact force increases with it, the ability of load switch shock resistance electric current
Also it correspondinglys increase.
When arcing occurs for movable contact 303 and stationary contact 302, it is attached to the silver gasification of contact surface, silver powder disperse is in box
On the inner wall of body 100.In order to reduce volume, the movable contact 303 of existing load switch away from the distance of 100 inner wall of box body all very
Small, when arcing occurs, the creepage distance between movable contact 303 and stationary contact 302 becomes smaller, and voltage endurance capability is caused to become smaller, and influences to bear
The service life of load switch.Therefore, in the case where ensuring that volume is sufficiently small, in order to ensure voltage endurance capability, movable contact 303 and quiet is avoided
Creepage distance between contact 302 becomes smaller, and as shown in Figure 11, Figure 12, can be located at the position below movable contact 303 in box body 100
The first groove 102 is opened up, is located at the position above movable contact 303 in lid 200 and offers the second groove 201, the first groove 102
With the moving range of the span covering movable contact 303 of the second groove 201, it is ensured that certain creepage distance.
Equally, as shown in figure 11, it loads and is equipped with partition 103 between on off mechanism 300 and magnetic path 500, in order to improve
The voltage endurance capability between on off mechanism 300 and magnetic path 500 is loaded, the height of partition 103 can be increased, correspondingly, lid 200
It is equipped with the third groove 202 being inserted into for partition 103, climbs electricity between load on off mechanism 300 and magnetic path 500 to increase
Distance improves voltage endurance capability.
Since the wall surface of box body 100 is very thin, in the case where heated, 100 wall surface of box body is easy to tilt on the inside of box body 100
Deformation, for example, be easy to stop the movement of push card 400, it is negative to influence this after the wall surface deformation of the box body 100 of push card 400
The closure of load switch, therefore, 100 wall surface of box body deforms in order to prevent, as shown in figure 13, can be formed in 100 opening of box body
Second bending part 100a is formed with the third bending part 200a that can be plugged on the inside of the second bending part 100a on the downside of lid 200,
Third bending part 200a can prevent 100 wall surface of box body to 100 inside inclination and distortion of box body.
More than, the only schematic description of the utility model, it will be recognized by those skilled in the art that practical without departing from this
On the basis of novel working principle, a variety of improvement can be made to the utility model, this belongs to the protection of the utility model
Range.
Claims (8)
1. a kind of load switch, which is characterized in that including box body and the lid for being covered on the box body, be equipped in the box body
Promotion for the load on off mechanism of connecting and disconnecting of the circuit where controlling load and for controlling the load on off mechanism on-off
Card；
The load on off mechanism includes quiet conductive sheet, moving conductive piece, movable plate component, is riveted on the several quiet of the quiet conductive sheet
Contact and several movable contacts for being riveted on the movable plate component, the movable plate component include movable contact spring and at least one shunting
Piece, the splitter and movable contact spring are stacked together, one end riveting of one end of the movable plate component and the moving conductive piece, institute
It states and offers at least one strip groove on movable plate component along its length, the movable plate component is divided into several by the strip groove
Group movable plate bar, riveting has the movable contact on each movable plate bar, in the several groups movable plate bar wherein one group it is dynamic
There are the elastic slice pushed for the push card, the several groups movable plate bar in the end of piece bar far from the side riveting of the quiet conductive sheet
In remaining movable plate bar movable contact spring end be all provided with the oriented close quiet conductive sheet direction extend the first bending part；
The push card several groups movable plate bar can be pushed mobile to the direction close to or far from the quiet conductive sheet so that
The movable contact and stationary contact point contact or separation.
2. load switch as described in claim 1, which is characterized in that the moving conductive piece includes caulking part and is connected to described
The parallel extensions of caulking part, the caulking part and the movable plate assembly staking, the parallel extensions and the movable plate component
In parallel, and with the movable plate component it is formed with gap.
3. load switch as described in claim 1, which is characterized in that the elastic slice is riveted on position in the several groups movable plate bar
In on the movable plate bar of bottom.
4. load switch as described in claim 1, which is characterized in that the quantity of the strip groove is one.
5. load switch as described in claim 1, which is characterized in that the moving conductive on piece position opposite with the strip groove
It sets and offers strip-shaped hole.
6. load switch as described in claim 1, which is characterized in that open the position that the box body is located at below the movable contact
Equipped with the first groove, the position that the lid is located above the movable contact offers the second groove.
7. load switch as described in claim 1, which is characterized in that be formed with the second bending part, institute at the box opening
It states and is formed with the third bending part that can be plugged on the inside of second bending part on the downside of lid.
8. load switch as described in claim 1, which is characterized in that offered on the box body for the quiet conductive sheet and moved
The opening that conductive sheet stretches out is equipped with reinforcing rib around the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820786765.6U CN208240583U (en) | 2018-05-24 | 2018-05-24 | A kind of load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820786765.6U CN208240583U (en) | 2018-05-24 | 2018-05-24 | A kind of load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208240583U true CN208240583U (en) | 2018-12-14 |
Family
ID=64580900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820786765.6U Active CN208240583U (en) | 2018-05-24 | 2018-05-24 | A kind of load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208240583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904037A (en) * | 2019-03-08 | 2019-06-18 | 浙江格蕾特电器股份有限公司 | Reduce the relay of contact resistance variation amount |
-
2018
- 2018-05-24 CN CN201820786765.6U patent/CN208240583U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904037A (en) * | 2019-03-08 | 2019-06-18 | 浙江格蕾特电器股份有限公司 | Reduce the relay of contact resistance variation amount |
| CN109904037B (en) * | 2019-03-08 | 2020-11-10 | 浙江格蕾特电器股份有限公司 | Relay capable of reducing contact resistance variation |
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