CN102446635B - There is the electric switch of the switch contact of improvement - Google Patents
There is the electric switch of the switch contact of improvement Download PDFInfo
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- CN102446635B CN102446635B CN201110299718.1A CN201110299718A CN102446635B CN 102446635 B CN102446635 B CN 102446635B CN 201110299718 A CN201110299718 A CN 201110299718A CN 102446635 B CN102446635 B CN 102446635B
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Abstract
The present invention relates to a kind of electric switch, comprise one group of terminal, each terminal is furnished with at least one contact apparatus, holds the opening of electric conductor and tighten the screw device of electric conductor.Be furnished with the moving meter of at least two contact apparatus, one of them contact apparatus is can pivotable and for good and all contacting with the contact apparatus of terminal, and other contact apparatus of moving meter contacts movably with the contact apparatus of terminal.The sliding contact at least partially of drive unit and moving meter is to drive moving meter from first position of the switch to second switch position.Each contact apparatus of terminal and moving meter comprises the composite material of inner core, at central shaft, there is high ceramic TSC ratio and low Ag ratio, when moving to the periphery of inner core about central shaft, with the minimizing of the percentage of ceramic TSC, the percentage of silver increases gradually.This contact apparatus of this electric switch obtains better wear-resistant and more high impact, adds the life-span, improves contact quality.
Description
Technical field
The present invention relates generally to the electric switch for circuit.The present invention is specifically related to a kind of electric switch with the switch contact of improvement.
Background technology
Usually, electric switch, as single channel or two-way switch, for by carrying out electrical connection control circuit and to circuit supply between electric wire.Dissimilar contactor is based on electric component and Combination Design that is mechanical and electric component.Operate this switch to open or the closed electrical connection by circuit, it makes user by opening or this switch closed, selectively opens or closed circuit.
Electric switch is provided with fixed terminal, and the contact of fixed terminal is each other by the contact electrical contact of transfer arm, and it is operated by simple hinge mechanism.In electric switch, contact needs stand more than 10,000 circulation, and therefore carries out accelerating lifetime testing.Because fixing, the mobile and/or pivot contact of electric switch operates at more top load and temperature, therefore in course of normal operation, these contacts of switch are easy to wearing and tearing or corrosion, even when overheated appearance, degenerate further.The wearing and tearing of this electrical contact and overheatedly cause the switching manipulation of losing efficacy or degenerating, the inefficacy of other switch block or fault and minimize whole life-span of switch.Because various condition there will be the overheated wearing and tearing that cause or degeneration in switching manipulation process, the electricity that this various condition carries as contact, the voltage applied in contact both sides, and the maximum operating temp of contact experience, together with the working strength operated by contact, i.e. the quantity of switching manipulation and frequency.
In addition, the wearing and tearing of electrical contact are the most normally because the starting the arc occurred when the contact at transfer arm is connected to fixed terminal or disconnects from fixed terminal in switching manipulation process caused.It also can be that the pollution of the contact surface of contact due to fixed terminal caused.Further, the excessive heat of contact or other switch block causes the physical characteristic of the contact of terminal to change.When its contact is corroded and damages, the effect of switch may be lost efficacy, and it causes the risk damaged people or machine.
The contact design of switch is stand to occur in this starting the arc inside switch, corrosion and excessive heat.Within the life-span of switch, even if various conventional method utilizes specific contact material as the contact of switch to stand the wearing and tearing of fixing under sizable impact and mobile contact.In some traditional switch, brass material or other composite material be formed and the electrical contact that formed as switch with the property led of offeing telex, better impact strength and wear-resistant.
About traditional electric switch, it is difficult to the contact quality keeping electrical contact in the whole life-span of switch, when it bears due to the higher Mechanical Contact power of the starting the arc and temperature and wearing and tearing, and its circuit destroying switch and be attached thereto.Further, it also can cause the transmission loss in conductivity and the risk to people's injury.In addition, it requires the contact often monitoring and change whole switch or switch.Therefore, need to provide a kind of its can overcome the electric switch with the switch contact of improvement of above-mentioned defect.
Summary of the invention
Target of the present invention is to provide a kind of electric switch with the switch contact of improvement, and it is conducive to better wear-resistant and impact strength and, to improve the life-span of electric switch, also improves the contact quality of electric switch.
Another target of the present invention is to provide a kind of electric switch with the switch contact of improvement, and it can obtain higher pyroconductivity and conductivity.
According to an aspect, the present invention realizing this target relates to electric switch, and comprise one group of terminal, each terminal is furnished with at least one contact apparatus, for receiving the opening of electric conductor and the screw device for tightening electric conductor.Moving meter is furnished with at least two contact apparatus, and one of them contact apparatus contacts with the contact apparatus of one of them terminal pivotly and for good and all, and other contact apparatus of moving meter contacts movably with the contact apparatus of other terminal.The sliding contact at least partially of drive unit and moving meter is to drive moving meter from first position of the switch to second switch position.Each contact apparatus of terminal and moving meter comprises the inner core of composite material, it has high ceramic TSC (titanium silicon carbide) ratio and low Ag (silver) ratio at its central shaft, wherein when moving towards the periphery of inner core relative to central shaft, along with the minimizing of the percentage of ceramic TSC, increase gradually at the percentage of the silver of the central shaft of inner core.
In addition, the composite material of the described inner core of each contact apparatus preferably it central shaft by qualitatively 20% silver and qualitatively 80% ceramic TSC formed, and its central shaft relative to inner core periphery by qualitatively 80% silver and qualitatively 20% ceramic TSC formed.The composite material of the inner core of each contact apparatus comprises the structure gradient (grading) of high ceramic TSC and low Ag and high Ag and the low electricity of ceramic TSC and the mixture of thermal gradient.The composite material of the inner core of each contact apparatus is coated with the external coating formed by high Ag and low ceramic TSC composite material.External coating preferably by qualitatively 90% silver and qualitatively 10% ceramic TSC composite material formed.
In addition, in first position of the switch, the contact apparatus that only a contact apparatus of moving meter is electrically connected to one of them terminal supplies with the electricity disconnected to circuit.In second switch position, the contact apparatus of all moving meters is electrically connected to the contact apparatus of each terminal with electric to circuit supply.The contact apparatus of moving meter comprises mobile contact seat and mobile contact end (tip).The contact apparatus of terminal comprises Pivot joint and fixed contact end.Drive unit to be placed in outer rocking bar (rocker) and to be mounted with elastic device to apply pressure on the mobile element.This group terminal and moving meter are closed in be had in the shell of base cover.This group terminal and moving meter are formed by electric conduction material.
Accompanying drawing explanation
The present invention discusses with reference to the accompanying drawings more specifically.
Fig. 1 shows the internal structure being in OFF state according to the electric switch of one exemplary embodiment of the present invention;
Fig. 2 shows the internal structure being in ON state according to the electric switch of one exemplary embodiment of the present invention;
Fig. 3 shows the detail drawing of the switch contact of the description electric switch according to one exemplary embodiment of the present invention;
Fig. 4 shows the explanatory view of the composite material of the switch contact of the electric switch according to one exemplary embodiment of the present invention;
Fig. 5 shows the sequential flowchart forming the method for the composite material of the switch contact of electric switch according to the description of one exemplary embodiment of the present invention.
Embodiment
The present invention will in after this reference accompanying drawing explanation.
Fig. 1 shows according to the electric switch of one exemplary embodiment of the present invention internal structure in its OFF state.The present invention relates to electric switch, it can be used in different rated value, different circuit (1-pole, 2-pole) etc., for control circuit with to circuit supply electricity.Electric switch comprises outer rocking bar 1, and it is configured as the aesthstic lid for electric switch.Outer rocking bar 1 also can be referred to as central plate.Outer rocking bar 1 is designed to keep plunger or driver 3 at its center.Plunger 3 is mounted with plunger spring 2, and it applies pressure on plunger 3.Electric switch has to have and is connected to the base cover of outer rocking bar 1 or the shell 4 of contacts cover 5, makes to form enclosed construction to close one group of fixed terminal 6 and mobile contact arm 7.Shell 4 is also referred to as base seat (basesocket).
Fixed terminal 6 keeps inside the shell by the base cover 5 in shell 4, and wherein fixed terminal 6 and mobile contact arm 7 are made up of electric conduction material.Shell 4 and outer rocking bar 1 are together installed as end section and mobile contact arm 7 sliding contact of the spring-loaded plunger 3 making outer rocking bar 1.When sliding on mobile contact arm 7, plunger 3 applies dynamic pressure/power on mobile contact arm 7.When outer rocking bar 1 is struck (toggle), plunger 3 slides on the surface of mobile contact arm 7, is driven to closed or open position to make mobile contact arm about the contact of one of them of fixed terminal 6a, 6b.Outer rocking bar 1 is entered two position of the switch or state, i.e. off-state by fluctuation, as shown in Figure 1; Or on-state, as shown in Figure 2, Fig. 2 describe according to the electric switch of exemplary embodiment of the present invention ON state internal structure.What the closed or open position of mobile contact arm 7 ensured supply to the electricity of circuit respectively closes or opens.
With reference to Fig. 3, describe the detail drawing of switch contact 6a1,6b1,7a, the 7b describing electric switch according to one exemplary embodiment of the present invention.Mobile contact arm 7 is configured as having mobile contact seat 7a and mobile contact end 7b.First fixed terminal 6a is furnished with for receiving input conductor 12, that is, the opening 9 of the electric wire of live; And for the supporting terminal support 8 of the pivot contact joint 6a1 that supports the first fixed terminal 6a.Similarly, the second fixed terminal 6b is furnished with for receiving output conductor 12, that is, the opening 10 of equipment conductor (applianceconductor); And fixed contact end 6b1.The switch contact of electric switch comprises mobile contact seat 7a, mobile contact end 7b, Pivot joint 6a1 and fixed contact joint 6b1.Fixed terminal 6a, 6b are made up of terminal screw 11, and it is after being inserted into fixed terminal opening 9,10 by suitable conductor 12, for tightening and fixed conductor 12.The mobile contact seat 7a of transfer arm 7 and the Pivot joint 6a1 electrical contact in a permanent fashion of the first fixed terminal 6a; And the contactor end 6b1 of the mobile contact end 7b of transfer arm 7 and the second fixed terminal 6b only electrical contact when on-state.
The outer rocking bar 1 of electric switch is entered two position of the switch, as open position and on-position by simple hinge mechanism by operation.At open position, plunger 3 is actuated to guide mobile contact arm 7 to lean against in base cover 5, and this is disconnected the electrical contact between the mobile contact end 7b of the transfer arm 7 and fixed contact end 6b1 of the second fixed terminal 6b.Therefore, at open position, the electricity supply of the circuit being connected to it is opened or be disconnected to electric switch.Similarly, at on-position, plunger 3 slides to set up electrical contact between the mobile contact end 7b and the fixed contact end 6b1 of the second fixed terminal 6b of transfer arm 7 on mobile contact arm 7.Therefore, at on-position, electric switch closes or supplies electricity to the circuit being connected to it.
Fig. 4 describes the schematic diagram of the composite material of switch contact 6a1,6b1,7a, 7b of the electric switch according to exemplary embodiment of the present invention.Switch contact, as the mobile contact seat 7a of electric switch, mobile contact end 7b, Pivot joint 6a1 and fixed contact end 6b1 are formed by inner core 100, and it is coated with external coating 101.The inner core 100 of contact 6a1,6b1,7a, 7b and external coating 101 are made up of the sinter powder metal composite material conducted electricity, comprise silver particles (Ag) and ceramic TSC (titanium silicon carbide), it is defined as Functionally Graded Materials (functionallygradedmaterial).Each contact 6a1,6b1,7a, 7b comprise the composite material of inner core, it has high ceramic TSC (titanium silicon carbide part) ratio and low Ag (silver) ratio at its central shaft, wherein the central shaft Ag of inner core percentage relative to central shaft towards inner core periphery movement while increase gradually along with the reduction of the percentage of ceramic TSC.The composite material of the inner core of each contact apparatus comprises the structure gradient of high ceramic TSC and low Ag, and high Ag and the low electricity of ceramic TSC and the mixture of thermal gradient.
On the one hand, the inner core 100 of contact 7a, 7b, 6a1,6b1 is formed by the composite material of the ceramic TSC of height and low Ag, in preferred mass 20% silver and qualitatively 80% ceramic SC.On the other hand, the inner core 100 of contact 7a, 7b, 6a1,6b1, at its central shaft, is formed by the composite material of the ceramic TSC of height and low Ag, in preferred mass 20% silver and qualitatively 80% ceramic TSC; And at its periphery about central shaft, the mixture of Gao Yin and low ceramic TSC, in preferred mass 80% silver and qualitatively 20% ceramic TSC.When moving about the periphery of central shaft towards inner core 100, in the composite material of the central shaft of inner core 100 percentage of Ag relative to composite material in the percentage of ceramic TSC increase gradually.Similarly, when moving about the periphery of central shaft towards inner core 100, in the composite material of the central shaft of inner core 100 percentage of ceramic TSC relative to composite material in the percentage of Ag reduce gradually.The composite material of high ceramic TSC and low Ag is with reference to making structure gradient composites, and the composite material of high Ag and low ceramic TSC is with reference to making electricity and thermal gradient composite material.
In addition, the composite material of the inner core of each contact apparatus 6a1,6b1,7a, 7b is coated with the external coating 101 formed by high Ag and low ceramic TSC composite material, wherein external coating 101 preferably by qualitatively 90% silver and qualitatively 10% the composite material of ceramic TSC formed.The composite material of contact 6a1,6b1,7a, 7b makes electric current by the path of minimum resistance, i.e. the periphery of contact, because it comprises high Ag, and realizes the stress/pressure distribution in the central axis of contact, because it comprises high ceramic TSC.Therefore, by means of ceramic TSC, switch contact 6a1,6b1,7a, 7b obtain for the high wear resistance of this electrical applications and impact strength material with the quality of maintained switch contact and life-span, and realize good electrical conductivity and electron mobility by means of silver particles.Therefore, this switch contact adds the life-span of electric switch and also improves the contact quality of electric switch.
Fig. 5 shows the flow chart of the method for the composite material of switch contact 6a1,6b1,7a, the 7b of the formation electric switch described according to exemplary embodiment of the present invention.Start, titanium silicon carbide (TSC) powder mixes with cermet adhesive.Then, ceramic TSC mixes the composite powder to form needs with silver particles (Ag) powder, that is, the ideal mixture of Ag and ceramic TSC.Thereafter, composite powder is sintered and is machined as the shape of needs, as spherical, and other shape oval or any.Finally, the composite material of shaping can be brazed in brass terminal, and as fixed terminal 6a, 6b and mobile contact arm 7, the composite material be wherein shaped is as contact portion or device.
And have 15.6 × 10 traditionally
6the brass material (CuZnX) of good conductivity compare, this composite material material has higher heat conductivity, good electrical conductivity, higher impact strength and very high wear-resistant.The material behavior of composite material of the present invention is listed as follows relative to traditional material (CuZnX):
Based on this table, the heat of the composite material obtained and conductivity are close to traditional material CuZnX, and the composite material wherein obtained is by increasing the composition of its Ag wherein, and its heat and conductivity even can close to fine copper.Also proved that the thermal characteristics with the composite material pivot contact joint of the TSC of Ag shows the whole temperature rise of 37.2 degrees Celsius in the 20A switch using CuZn15.Therefore, this composite material material is well adapted to the temperature rising standard for this kind of electronic product.
Foregoing description is specific embodiments of the invention.Should think that the present embodiment is only set forth for illustrative purposes.Be obvious to those skilled in the art, although the present invention illustrates according to its specific embodiment at this, there is multiple alternative form of the present invention, improvement and change in it.Intention is to comprise all these improvements and changes, as long as in they enter as claim or its equivalent the spirit and scope of the present invention.Therefore, all changes of the wide protection range of claims, improvement and alternative form is fallen under main idea of the present invention.
Claims (12)
1. an electric switch, comprising:
Multiple terminal, each described terminal is furnished with at least one contact apparatus, for holding the opening of electric conductor and the screw device for tightening described electric conductor;
Be furnished with the moving meter of at least two contact apparatus, a contact apparatus in wherein said moving meter contacts with the described contact apparatus of terminal described in one of them pivotly and for good and all, and other contact apparatus of described moving meter contact movably with the described contact apparatus of terminal described in other; And
Drive unit, the sliding contact at least partially of described drive unit and described moving meter is to drive described moving meter from first position of the switch to second switch position;
It is characterized in that: each contact apparatus of described terminal and described moving meter comprises the composite material of inner core, described inner core has high ceramic titanium silicon carbide ratio and low silver-colored ratio at its central shaft, when moving towards the periphery of inner core relative to central shaft, along with the minimizing of the percentage of ceramic titanium silicon carbide, increase gradually at the percentage of the silver of the central axis of inner core.
2. electric switch as claimed in claim 1, it is characterized in that: the composite material of the described inner core of each contact apparatus preferably it central shaft by qualitatively 20% silver and qualitatively 80% ceramic titanium silicon carbide formed, at its periphery place relative to the central shaft of inner core, by qualitatively 80% silver and qualitatively 20% ceramic titanium silicon carbide formed.
3. electric switch as claimed in claim 1, is characterized in that: the composite material of the inner core of described each contact apparatus comprises the structure gradient of high ceramic titanium silicon carbide and low silver and Gao Yin and the low ceramic electricity of titanium silicon carbide and the mixture of thermal gradient.
4. electric switch as claimed in claim 1, is characterized in that: the composite material of the inner core of described each contact apparatus is coated with the external coating formed by Gao Yin and low ceramic titanium silicon carbide composite material.
5. electric switch as claimed in claim 4, is characterized in that: described external coating by qualitatively 90% silver and qualitatively 10% ceramic titanium silicon carbide composite material formed.
6. electric switch as claimed in claim 1, it is characterized in that: in described first position of the switch, only a contact apparatus of described moving meter is electrically connected to the described contact apparatus of terminal described in one of them, supplies with the electricity disconnected to circuit.
7. electric switch as claimed in claim 1, it is characterized in that: in described second switch position, the described contact apparatus of all described moving meters is electrically connected to the described contact apparatus of each described terminal, with electric to circuit supply.
8. electric switch as claimed in claim 1, is characterized in that: the described contact apparatus of described moving meter comprises mobile contact seat and mobile contact end.
9. electric switch as claimed in claim 1, is characterized in that: the described contact apparatus of described multiple terminal comprises Pivot joint and fixed contact end.
10. electric switch as claimed in claim 1, is characterized in that: described drive unit to be placed in outer rocking bar and to be mounted with elastic device, to apply pressure on described moving meter.
11. electric switches as claimed in claim 1, is characterized in that: described multiple terminal and described moving meter are closed in be had in the shell of base cover.
12. electric switches as claimed in claim 1, is characterized in that: described multiple terminal and described moving meter are formed by electric conduction material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN2904CH2010 | 2010-09-30 | ||
| IN2904/CHE/2010 | 2010-09-30 |
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| Publication Number | Publication Date |
|---|---|
| CN102446635A CN102446635A (en) | 2012-05-09 |
| CN102446635B true CN102446635B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110299718.1A Active CN102446635B (en) | 2010-09-30 | 2011-09-30 | There is the electric switch of the switch contact of improvement |
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| CN (1) | CN102446635B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138727A (en) * | 1981-02-20 | 1982-08-27 | Matsushita Electric Works Ltd | Illumination seesaw switch |
| JPS60112215A (en) * | 1983-11-18 | 1985-06-18 | 松下電器産業株式会社 | Switch |
| JPS61110921A (en) * | 1984-11-02 | 1986-05-29 | オムロン株式会社 | Switch |
| CN1595577A (en) * | 2003-09-11 | 2005-03-16 | 西蒙股份公司 | Improved embedded mechanism with rotation key for prompting low voltage circuitry |
| CN101617376A (en) * | 2006-12-15 | 2009-12-30 | Abb研究有限公司 | Contact element |
-
2011
- 2011-09-30 CN CN201110299718.1A patent/CN102446635B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138727A (en) * | 1981-02-20 | 1982-08-27 | Matsushita Electric Works Ltd | Illumination seesaw switch |
| JPS60112215A (en) * | 1983-11-18 | 1985-06-18 | 松下電器産業株式会社 | Switch |
| JPS61110921A (en) * | 1984-11-02 | 1986-05-29 | オムロン株式会社 | Switch |
| CN1595577A (en) * | 2003-09-11 | 2005-03-16 | 西蒙股份公司 | Improved embedded mechanism with rotation key for prompting low voltage circuitry |
| CN101617376A (en) * | 2006-12-15 | 2009-12-30 | Abb研究有限公司 | Contact element |
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| Publication number | Publication date |
|---|---|
| CN102446635A (en) | 2012-05-09 |
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