CN208861838U - A kind of switch touching head assembly - Google Patents
A kind of switch touching head assembly Download PDFInfo
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- CN208861838U CN208861838U CN201821586289.XU CN201821586289U CN208861838U CN 208861838 U CN208861838 U CN 208861838U CN 201821586289 U CN201821586289 U CN 201821586289U CN 208861838 U CN208861838 U CN 208861838U
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- fingertip
- conductive arm
- static contact
- contact
- moving contact
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Abstract
The utility model provides a kind of switch touching head assembly, including corresponding static contact component and moving contact component, the static contact component includes the first conductive arm and several static contact fingertips, the static contact fingertip is symmetrically located at first conductive arm two sides, the static contact fingertip is D-shaped fingertip, memorial alloy pressure spring is equipped in the D-shaped fingertip, the moving contact component includes the second conductive arm and moving contact, the moving contact both ends are separately connected the opposite two sides of second conductive arm, the moving contact connects the static contact fingertip and corresponding with first conductive arm.The utility model fundamentally solves because contact is bad and spring failure overheats caused disconnecting switch Problem of Failure, to greatly reduce the generation of disconnecting switch fever accident and large area blackout.
Description
Technical field
The utility model belongs to disconnecting switch technical field, and in particular to a kind of switch touching head assembly.
Background technique
Currently, a kind of relatively early used scheme is to use both at home and abroad there are mainly two types of moving contact and fixed contact of isolating switch used
Two or more spring straining two sides fingertips are in close contact fingertip and moving contact.Newer scheme is adopted in fingertip two sides
The arc-shaped spring piece made of spring steel compresses fingertip.By it is a large amount of it is practical after find that these schemes have the following problems:
(1) insulation measures are not taken between spring and static contact component or takes measure but has damaged, will lead to electric current
Flowing through spring makes spring temper follow the string, and static contact component is caused to generate heat with moving contact component poor contact；Spring is long-term
Fatigue can occur in compressing or connecing tight working condition, as the lengthening of runing time is slowly followed the string, or even can generate
Permanent deformation, causes contact bad.
(2) it since the bolt of static contact component and moving contact component is due to prolonged use, easily loosens, causes to touch
Refer to the poor contact between moving contact, generates superheating phenomenon so as to cause contacting surface poor contact.
(3) as number of operations increases or the uneven of the thickness of coating will lead to fingertip plating exfoliation, dew copper, to lead
Cause contact overheat.
(4) contact is directly bonded with button contact base, poor contact, is lifted one's head and can be tilted after long-time, causes to generate preheating.
Since contact fever will lead to disconnecting switch failure, so as to cause the generation of large area blackout, and power transmission line
Road, which has a power failure, can generate heavy economic losses and severe social influence again, and to avoid this phenomenon from occurring, power department needs to increase
Inspection, and a large amount of frequent maintenance can also expend a large amount of man power and material.
Utility model content
The purpose of the utility model is to provide a kind of switch touching head assemblies, fundamentally solve because of contact not
Disconnecting switch Problem of Failure caused by good and spring failure overheats, to greatly reduce disconnecting switch fever accident and large area is stopped
The generation of electrification.
The utility model provides the following technical solution:
A kind of switch touching head assembly, including corresponding static contact component and moving contact component, the static contact group
Part includes the first conductive arm and several static contact fingertips, and the static contact fingertip is symmetrically located at first conductive arm two
Side is equipped with the first bolt and is bolted by described first between first conductive arm and the static contact fingertip, described
The first memorial alloy washer is equipped between first bolt and the static contact fingertip, the static contact fingertip is D-shaped fingertip, described
Memorial alloy pressure spring is equipped in D-shaped fingertip, the moving contact component includes the second conductive arm and moving contact, the moving contact both ends
The opposite two sides of second conductive arm are separately connected, are equipped with the second bolt simultaneously between the moving contact and second conductive arm
It is bolted by described second, the second memorial alloy washer is equipped between second bolt and the moving contact, it is described dynamic
The contact connection static contact fingertip is simultaneously corresponding with first conductive arm.
Preferably, the D-shaped fingertip is unclosed D-shaped fingertip, the opening and described first of the unclosed D-shaped fingertip
Conductive arm is neighbouring.
Preferably, spring holder is equipped in the D-shaped fingertip, the memorial alloy pressure spring is set in the spring positioning
On pin.
Preferably, the memorial alloy pressure spring material is Ni-Ti-based shape memory alloy.
Preferably, insulating medium layer is equipped on the outside of the memorial alloy pressure spring.
Preferably, first conductive arm is connected with rain-proof cover, and the rain-proof cover is located on the outside of the static contact fingertip, institute
It states and is equipped with third bolt between the first conductive arm and the rain-proof cover and is bolted by the third.
The beneficial effects of the utility model are: static contact fingertip is directly contacted by bolt with conductive arm using D-shaped fingertip,
Normal pressure lasting between fingertip and button contact base is maintained, keeps its contact resistance smaller, effectively prevents fever phenomenon and generates；Memory
Alloy pressure spring can provide lasting elastic force, and generate restoring force when poor contact between static contact fingertip and moving contact, increase
Pressure between static contact fingertip and moving contact ontology；First memorial alloy washer and the second memorial alloy washer restore in temperature rise
The contact pressure between static contact fingertip and the first conductive arm or moving contact ontology and the second conductive arm can be increased when deformation, subtracted
Few contact resistance reduces temperature rise fever；Memorial alloy has good wearability, does not have to surface with the pressure spring that memorial alloy makes
Coating processing, economizes on resources, and reduces processing cost；The utility model changes fingertip contact form and shape, fundamentally solves
Because contact is bad and spring failure overheats caused disconnecting switch Problem of Failure, to greatly reduce disconnecting switch fever
The generation of accident and large area blackout saves a large amount of maintenance for power department, safeguards and use man power and material, meets domestic
Operation power enterprise there is an urgent need to.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the structural schematic diagram of the static contact component of the utility model；
Fig. 3 is the broken away view of the static contact component of the utility model；
Fig. 4 is the structural schematic diagram of the moving contact component of the utility model；
Fig. 5 is the broken away view of the moving contact component of the utility model；
In the figure, it is marked as 1. moving contact components；2. static contact component；3. the first conductive arm；4. static contact fingertip；5. memory
6. spring holder of alloy pressure spring；7. moving contact；8. the second conductive arm；9. the first bolt；10. the first memorial alloy washer；11.
Second bolt；12. the second memorial alloy washer；13. third bolt；14. rain-proof cover.
Specific embodiment
As shown in Figure 1-Figure 3, a kind of switch touching head assembly, including corresponding static contact component 2 and moving contact group
Part 1, static contact component 2 include the first conductive arm 3 and several static contact fingertips 4, and static contact fingertip 4 is symmetrically located at first and leads
Electric arm two sides 1 are equipped with the first bolt 9 and are connected by the first bolt 9, the first spiral shell between first conductive arm 1 and static contact fingertip 4
The first memorial alloy washer 10 is equipped between bolt 9 and static contact fingertip 4, static contact fingertip 4 is D-shaped fingertip, and D-shaped fingertip is not seal
D-shaped fingertip is closed, the opening of unclosed D-shaped fingertip and the first conductive arm 3 are neighbouring, and D-shaped fingertip is direct by bolt and conductive arm
Contact, maintains normal pressure lasting between fingertip and button contact base, keeps its contact resistance smaller, effectively prevents fever phenomenon and produces
It is raw.It is equipped with memorial alloy pressure spring 5 in D-shaped fingertip, is equipped with spring holder 6 in D-shaped fingertip, memorial alloy pressure spring 5 is set in bullet
On spring positioning pin 6.Further, 5 material of memorial alloy pressure spring is Ni-Ti-based shape memory alloy, is set on the outside of memorial alloy pressure spring
There is insulating medium layer, since NiTi base memorial alloy has good comprehensive mechanical property, excellent corrosion resistance and antifriction
Wipe polishing machine.First conductive arm 3 is connected with rain-proof cover 14, and rain-proof cover 14 is located at 4 outside of static contact fingertip, the first conductive arm 3
It is equipped with third bolt 13 between rain-proof cover 14 and is connect by third bolt 13, further increases the insulating properties of the utility model
Energy and safety.
As Figure 1-Figure 5, moving contact component 1 includes the second conductive arm 8 and moving contact 7, and 7 both ends of moving contact are separately connected
Second conductive arm 8 opposite two sides are equipped with the second bolt 11 and pass through the second bolt 11 between moving contact 7 and the second conductive arm 8
Connection, between the second bolt 11 and moving contact 7 be equipped with the second memorial alloy washer 12, moving contact 7 connect static contact fingertip 4 and with
First conductive arm 3 is corresponding.First memorial alloy washer and the second memorial alloy washer can increase when temperature rise restores deformation
Contact pressure between static contact fingertip and the first conductive arm or moving contact ontology and the second conductive arm reduces contact resistance, drop
Low-temperature-rise fever；Memorial alloy has good wearability, is handled, is saved without overlay coating with the pressure spring that memorial alloy makes
Resource reduces processing cost.
As Figure 1-Figure 5, a kind of switch touching head assembly in use, in the two sides phase of the first conductive arm 3
Pairs of static contact fingertip 4 is equipped with to setting, static contact fingertip 4 can be one or more pairs of, while static contact fingertip 4 is not
D-shaped is closed, the opening of unclosed D-shaped fingertip and the first conductive arm 3 are neighbouring, and D-shaped fingertip is directly connect by bolt with conductive arm
Touching, maintains normal pressure lasting between fingertip and button contact base, keeps its contact resistance smaller, effectively prevents fever phenomenon and generates；
Memorial alloy pressure spring 5 and the first conductive arm 3 are neighbouring, and close to the free end of static contact fingertip 4, memorial alloy pressure spring 5 can be provided
Continue elastic force, and generate restoring force when poor contact between static contact fingertip 4 and moving contact 7, increase static contact fingertip 4 and moves
Pressure between contact 7；First memorial alloy washer 10 and the second memorial alloy washer 12 can increase when temperature rise restores deformation
Contact pressure between big static contact fingertip 4 and the first conductive arm 3 or moving contact 7 and the second conductive arm 8, reduces contact resistance,
Reduce temperature rise fever；Further, it is connected between contact and button contact base using bolt and nut, contact site contact is good, bolt
Nut can keep normal pressure lasting between fingertip and button contact base, keep its contact resistance smaller, can effectively prevent fever phenomenon production
It is raw, it fundamentally solves because of disconnecting switch Problem of Failure caused by the bad overheat with spring failure of contact.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, although ginseng
The utility model is described in detail according to previous embodiment, it for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in practical
Within novel protection scope.
Claims (6)
1. a kind of switch touching head assembly, which is characterized in that described including corresponding static contact component and moving contact component
Static contact component includes the first conductive arm and several static contact fingertips, and the static contact fingertip is symmetrically located at described first and leads
Electric arm two sides are equipped with the first bolt and are connected by first bolt between first conductive arm and the static contact fingertip
It connects, the first memorial alloy washer is equipped between first bolt and the static contact fingertip, the static contact fingertip is D-shaped touching
Refer to, memorial alloy pressure spring is equipped in the D-shaped fingertip, the moving contact component includes the second conductive arm and moving contact, described dynamic
Contact both ends are separately connected the opposite two sides of second conductive arm, and the is equipped between the moving contact and second conductive arm
Two bolts are simultaneously bolted by described second, and the second memorial alloy pad is equipped between second bolt and the moving contact
Circle, the moving contact connect the static contact fingertip and corresponding with first conductive arm.
2. a kind of switch touching head assembly according to claim 1, which is characterized in that the D-shaped fingertip is unclosed D
Shape fingertip, the opening of the unclosed D-shaped fingertip and first conductive arm are neighbouring.
3. a kind of switch touching head assembly according to claim 1, which is characterized in that be equipped with bullet in the D-shaped fingertip
Spring positioning pin, the memorial alloy pressure spring are set on the spring holder.
4. a kind of switch touching head assembly according to claim 1, which is characterized in that the memorial alloy pressure spring material
For Ni-Ti-based shape memory alloy.
5. a kind of switch touching head assembly according to claim 1, which is characterized in that on the outside of the memorial alloy pressure spring
Equipped with insulating medium layer.
6. a kind of switch touching head assembly according to claim 1, which is characterized in that first conductive arm is connected with
Rain-proof cover, the rain-proof cover are located on the outside of the static contact fingertip, and the is equipped between first conductive arm and the rain-proof cover
Three bolts are simultaneously bolted by the third.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821586289.XU CN208861838U (en) | 2018-09-28 | 2018-09-28 | A kind of switch touching head assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821586289.XU CN208861838U (en) | 2018-09-28 | 2018-09-28 | A kind of switch touching head assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208861838U true CN208861838U (en) | 2019-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821586289.XU Active CN208861838U (en) | 2018-09-28 | 2018-09-28 | A kind of switch touching head assembly |
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| Country | Link |
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| CN (1) | CN208861838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166739A (en) * | 2018-09-28 | 2019-01-08 | 苏州国嘉记忆合金有限公司 | A kind of switch touching head assembly |
-
2018
- 2018-09-28 CN CN201821586289.XU patent/CN208861838U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166739A (en) * | 2018-09-28 | 2019-01-08 | 苏州国嘉记忆合金有限公司 | A kind of switch touching head assembly |
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