CN2463943Y - Integrated power switch contact - Google Patents
Integrated power switch contact Download PDFInfo
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- CN2463943Y CN2463943Y CN 01207231 CN01207231U CN2463943Y CN 2463943 Y CN2463943 Y CN 2463943Y CN 01207231 CN01207231 CN 01207231 CN 01207231 U CN01207231 U CN 01207231U CN 2463943 Y CN2463943 Y CN 2463943Y
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- power switch
- magnetic field
- integrated power
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Abstract
The utility model relates to an integrated power switch contact, wherein, arcing parts, conductive parts and magnetic field generating parts of the integrated power switch contact are all arranged in a container, and the upper part of the container is provided with an open mouth. An oblique cut which is formed by the interaction of the conductive part and the magnetic field generating part is arranged on the lower part of the container after matched; the arcing part is arranged on the top face of the assembly of the electric conductive part and the magnetic field generating part; the magnetic field generating part comprises a broken opening of a magnetic circuit. The integration of the utility model is an integrated direct assembly structure; the structure that each part is separately arranged in the prior art is totally changed. The integrated power switch contact has the advantages of small integral geometric size, high magnetic field intensity, high electric current breaking capacity, long electrical durability and low cost.
Description
The utility model relates to a kind of structure of contact of integrated power switch, and the integrated structure of contact terminal in especially a kind of vacuum switch tube arc control device belongs to technical field of electric appliances.
Switchgear is a kind of equipment that must use in the circuit, and it plays a part to close closes, cut-offs circuit.Under switch off state, switchgear has very high resistance, so that bear certain voltage; Close under the state in the switch pass, switchgear should have very low resistance, allows rated current to pass through, and does not produce too high temperature.Need in the interrupting process of switch contact to carry out arc extinguishing, so that the contact disjunction is resolute.Existing switchgear has different arc-extinguishing mediums: oil, sulphur hexafluoride, air, semiconductor, vacuum etc.The corresponding construction of switch difference of different arc-extinguishing mediums, performance are also different.Because vacuum switch has less clearance, high proof voltage ability, low arc voltage, high breaking current ability, low electrical wear and high electric life, therefore is widely used in the following power circuit of 35KV.As shown in Figure 1, the core component of vacuum switch tube 7 is the vacuum interrupters 6 in the housing 5.The performance of vacuum interrupter 6 inside contact 1,2 directly determines the performance of vacuum switch tube 7.Contacts of vacuum switch 1,2 rear portions of vacuum switch tube 7 connect moving conductive rod 3 and static conductive rod 4 respectively, and the action that contact 1,2 disconnects is to divide open contact 1,2 by controlling moving conductive rod 3 machineries.During disconnection, the contact area of contact 1,2 is more and more littler, up to contact 1,2 contact point is only arranged, contact resistance increases simultaneously, the temperature in zone is increasing, and up to contact point fusing, evaporation and ionization, metal vapors makes the discharge in the vacuum be maintained, produce vacuum arc, finish the electric disconnection of contact at last.In order to improve the rupture capacity of vacuum switch tube, need apply longitudinal magnetic field to vacuum arc, make vacuum arc remain on state stable and diffusion, electric current can comparatively be evenly distributed in contact surface like this, also can reduce simultaneously the temperature rise of contact surface, avoid a large amount of evaporations of contact material, make arc voltage remain on lower level, reduce the electrical wear of contact.Therefore contact must possess the ability in arcing, conduction, generation magnetic field in the vacuum switch tube arc control device, and technical parameter must satisfy that resistance fusion welding is good, compressive resistance is high, the drop-out current ability big, the requirement of aspects such as the arc resistant ablation property is good, shut off value is low, gas content is low, conductance is high and physical dimension is little, reliability height.At present, the concrete structure of contact is made up of arcing parts, conductive component, magnetic field production part substantially.As shown in Figure 2, arcing parts 11 are arranged on the middle part, adopt copper chromium material, and it has big breaking current connecting-disconnecting function and resistance fusion welding preferably, can produce metal vapors in the moment of cut-offfing, so that keep electric current; Conductive component 12 is provided with a circle of contact body, generally adopts copper product; Magnetic field production part 13 is an induction coil, is arranged on the outside of the body of contact, the still vertical magnetic of horizontal magnetic in the time of no matter, and its magnetic field intensity is lower.During these component-assembled, need under vacuum high-temperature, use silver-copper brazing alloy to carry out soldering, just can link together.Because each modular construction complexity, a soldering often can only be finished the part welding, therefore in reality is made, not only need repeatedly to enter high-temperature vacuum furnace and carry out repeatedly soldering, the contact of the face of weld is not to be absolutely to contact yet, be difficult to ensure that the solder side quality closes the fixing of welding, and have burr of the face of weld etc. inevitably, cause the electric energy of contact globality relatively poor.For above-mentioned reasons, the vacuum switch tube of prior art not only rate of finished products is low, and the method complexity causes cost too high, and the piece electrical performance is undesirable.In addition, the processing of each parts needs the various chromiumcopper materials that use specialty configuration moulding, for mechanical car's milling method complexity of this alloy material.
Also have a kind of product in the prior art, by the exploitation of Dutch HOLEC company, its magnetic field production part 13 has been abandoned the coil form of reason.On the copper chromium arcing parts 11 of contact body, stack setting, and utilize rivet 14 riveted joints from level to level as the electrical pure iron sheet 13 of magnetic field production part 13.Iron plate 13 has the opening 131,132,133 of different sizes, produces magnetic field by electrical pure iron sheet induced current, and concrete structure is shown in Fig. 3,4.The stacking of magnetic field production part 13 iron plates on the copper chromium arcing parts 11 forms from big to small trapezoidal shape from the front view direction, so not only simplified the structure of original contact, and magnetic field intensity improves greatly.The method for welding but even such structure also still has to use, the conductive component 12 that separation could be provided with, magnetic field production part 13 iron plates etc. combine.Because the method for the required use of its structure does not have big change substantially, so still there are many problems in its cost, quality.In addition, because production part 13 iron plates in magnetic field are that the plane stacks, according to screw law, magnetic induction makes progress away after arriving the iron plate opening more from level to level, forms the longitudinal flux line of force, and magnetic resistance is bigger.Having, is eccentric body because of stacking of magnetic field production part 13 iron plates is trapezoidal shape, heat carrier again, and this asymmetric heat carrier is inevitable poor in the instantaneous heat dispersion effect, not only influences the breaking capacity of contact, and whole easy deformation.
Of paramount importance is that existing structure of contact terminal is regardless of style, without exception, its each assembly all is to separate to be provided with, and manufacturing process is various, quality shakiness, performance are not high, just,, need a large amount of resolution element of welding for realizing a kind of electric work energy as early stage separate type electronic device, not only operation increases, and reliability is low, and poor-performing must be that volume is bigger simultaneously.
At last, remove above-mentioned because the complexity of structure and manufacture method, and brought outside the cost increase, the structure of contact terminal of making prior art also causes the wide variety of materials waste, no matter be the leftover pieces under each parts turnning and milling of traditional structure of contact terminal as shown in Figure 2, or shown in Fig. 3,4, improve in the structure the remaining leftover pieces of component processing such as iron plate and can't rationally be used simultaneously, so also must increase the cost of switching tube.
Main purpose of the present utility model is to provide a kind of contact of integrated power switch, and integral body is integrated direct package assembly, does not need to carry out soldering and connects, and changes the structure that each isolation of components is provided with in the prior art.
The purpose of this utility model is to provide a kind of contact of integrated power switch, the integrated structure compactness, and physical dimension is less.
Secondary objective of the present utility model is to provide a kind of contact of integrated power switch, and its magnetic field intensity is big, and good heat conductivity has high breaking current capacity and long electric life.
Another purpose of the present utility model is to provide a kind of contact of integrated power switch, and its each parts do not have the discarded leftover pieces of more multi-processing, and therefore raw material are saved greatly, reduce cost.
Another purpose of the present utility model is to provide a kind of contact of integrated power switch, and processing component directly adopts existing general section bar, need not make special-purpose section bar specially.
The purpose of this utility model is achieved in that
A kind of contact of integrated power switch, it comprises arcing parts, conductive component, magnetic field production part, described arcing parts, conductive component, magnetic field production part all are arranged in the container that a top has open ports; Conductive component and magnetic field production part cooperatively interact and are arranged at the bottom of container, and the arcing parts are arranged on conductive component and the magnetic field production part is formed on the end face of back formation; The magnetic field production part has the opening that magnetic circuit disconnects.
The configuration that described conductive component, magnetic field production part are equipped with is for producing the longitudinal magnetic field configuration.
Described container can be cup.
Described container material is the rigidity material that fusing point is higher than inner each parts fusing point.
Described container can be fusing point and is higher than 1100 ℃ of stainless steels.
Described arcing parts are fine copper, pure chromium powder mixture.
The ratio of described fine copper, pure chromium powder mixture can be 10: 90 to 90: 10.
Described pure copper powder is-80 orders---400 orders; Pure chromium powder is-80 orders---400 orders.
Described pure copper powder is-200 orders---400 orders; Pure chromium powder is-200 orders---400 orders.
Described pure copper powder is-325 orders; Pure chromium powder is-325 orders.
Described pure copper powder is a silver powder.
Described arcing parts are the sheet material or the bulk of the pure evanohm material of fine copper.
Described fine copper material is silver-colored material.
Described conductive component can be the material of conduction, high magnetic resistance and heat conduction.
Described conductive component fine copper or red copper material.
The form of described conductive component can be powder or sheet material or bar or tubing or bulk.
Described magnetic field production part partly or entirely is the soft magnetism material.
The form of described magnetic field production part part is powder or sheet material or bar or tubing or bulk.
Described soft magnetism material is the electrical pure iron material.
The form of described soft magnetism material can be powder or sheet material or bar or tubing or bulk.
Described magnetic field production part has the scarf that connects from the top downwards to a side of container center, and it is the otch that disconnects from top to bottom that the magnetic circuit of magnetic field production part disconnects opening, and the middle part of magnetic field production part has the through hole of up/down perforation.
The involutory back of described magnetic field production part and conductive component base shape is for meeting the column of cup container shapes.
Described column can be the above different-diameter cylindrical shell of one deck layer by layer between the insulation fit the multi-layer cylinder structure, it is layer of soft magnetic material that one deck is wherein arranged in the multi-layer cylinder.
Described multi-layer cylinder is a layer of soft magnetic material more than one deck wherein.
Described multi-layer cylinder is layer of soft magnetic material.
The scarf of described magnetic field production part is along the laterally zygomorphic scarf of column central shaft, i.e. scarf top excision arc equates with the undercut arc.
The scarf of described magnetic field production part column is along column central shaft asymmetrical scarf up and down, i.e. top excision arc greater than undercut after remaining arc.
Described magnetic field production part column along the column central shaft up and down the cross section after asymmetric the cutting sth. askew be triangle.
Described magnetic field production part column along the column central shaft up and down the cross section after asymmetric the cutting sth. askew be trapezoidal.
Described conductive component shaped upper part has the scarf of accepting of corresponding applying with the magnetic field production part.
Described conductive component is the multi-layer cylinder structure of different-diameter cylindrical shell fit, and the center of cylindrical shell is provided with the cylinder that inserts production part middle part, magnetic field through hole.
Described magnetic field production part multi-layer cylinder equates with the multi-layer cylinder number of plies of conductive component.
According to the technique scheme analysis as can be known, the utlity model has following advantage:
1, the technical conceive of the utility model integrated structure has carried out integrated outer package with each parts of original contact, its change and progressive compared with prior art as change and the progress of resolution element to integrated circuit.Whole integrated structure has changed the structure that the prior art isolation of components is provided with fully, and compact physical dimension has been dwindled volume, increases water conservancy diversion density.
2, the various derivation compound modes of magnetic field production part and conductive component have not only been expanded greatly, and because the outer package container is arranged, therefore the material of on-fixed shape such as some flours also can be used, so the utility model has also been expanded the extensive use of various conventional materials on the vacuum switch tube contact greatly.
3, stacking of magnetic field production part horizontal direction, magnetic resistance is little, and magnetic produces the efficient height, the turnover magnetic line of force that contact surface produces, longitudinal magnetic field intensity is very big, can control electric arc preferably and be in disperse state, and breaking capacity is strong.
4, since magnetic field production part and conductive component tangent plane cooperatively interact, not only increased heat transfer efficiency, further improved the breaking capacity of switching tube, also overcome in the prior art the asymmetric deformation that brings of heat carrier to the infringement of contact body, and saved manufactured materials greatly, the parts of each cutting-out all can be complementary with another corresponding components, and production process does not almost have how discarded leftover pieces.
5, choosing of each component materials no longer is adopted as production vacuum tube contact and chromiumcopper material professional production, that have certain proportioning, also shape that need not each component processing moulding is specific, but adopt the section bar such as fine copper, pure iron, stainless steel of existing common form, greatly reduce difficulty of processing and manufacturing cost.
6, each modular construction is simple, and processing, installation just can be finished whole assembling by a high-temperature processing method easily, and the qualification rate height.
7, production method does not re-use solderer's preface, has not only saved scolder, and has guaranteed the reliability that each parts connect.
Below in conjunction with accompanying drawing and specific embodiments the utility model is described in further detail.
Fig. 1 is existing vacuum switch tube arc control device basic structure schematic diagram;
Fig. 2 is the structural representation of contact in the existing arc control device;
Fig. 3 is the perspective view of existing another kind of contact;
Fig. 4 is a magnetic field shown in Figure 3 production part planar structure schematic diagram;
Fig. 5 is a kind of preferred embodiment exploded perspective structural representation of the utility model contact;
Fig. 6 is a kind of preferred embodiment side-looking structural representation of the utility model contact;
Fig. 7 is a kind of preferred embodiment centre section structural representation of the utility model contact;
Fig. 8 is one of the magnetic field production part of the utility model contact and conductive component tangent plane matching relationship structural representation;
Fig. 9 is two of the magnetic field production part of the utility model contact and a conductive component tangent plane matching relationship structural representation;
Figure 10 is an entity for the utility model contact conductive component, another preferred embodiment structural representation of the conductive component of form fit magnetic field production part;
Figure 11 is for having only one deck in the sandwich construction of the utility model contact magnetic field production part or abovely being another preferred embodiment structural representation of magnetic field production part of pure iron layer.
The utility model main theme is each parts of contact that original separation is provided with, and is placed in the container of an outer package, makes contact have integrated overall structure.More concrete is with conductive component and magnetic field production part cooperatively interacts and is arranged at the bottom of container, and the arcing parts are arranged on conductive component and magnetic field production part and form on the end face that the back forms; The magnetic field production part has the opening that magnetic circuit disconnects.The configuration that conductive component, magnetic field production part are equipped with is for producing the longitudinal magnetic field configuration.Container can be cup.The container material is the rigidity material that fusing point is higher than inner each parts fusing point.For example, container can be fusing point and is higher than 1100 ℃ of stainless steels.Because conductive component can be the material of conduction, high magnetic resistance and heat conduction, when adopting fine copper or red copper material, its fusing point is 1083 ℃, in high temperature furnace, be in molten condition for reaching conductive component, the temperature of high temperature furnace should be higher than 1083 ℃, the fusing point of outer package container just should be higher than 1100 ℃ so, just can satisfy the demand.The magnetic field production part partly or entirely is the soft magnetism material.Electrical pure iron material for example.
Just because of the contact outside shell of an overall package is arranged, the form of arcing parts wherein, magnetic field production part and conductive component also just can be powder or sheet material or bar or tubing or bulk.As long as can producing in contact surface, the version of forming have the magnetic line of force to pass in and out magnetic field longitudinally.
Embodiment 1: referring to Fig. 5, be a kind of preferred embodiment structural representation of the utility model; The arcing parts 84 of contact 8, conductive component 82, magnetic field production part 83 all are arranged in the cup 81 that a top has open ports.
Magnetic field production part 83 can be the above different-diameter cylindrical shell of one deck layer by layer between the insulation fit multi-layer cylinder 833 structures.It is layer of soft magnetic material that one deck is wherein arranged in the multi-layer cylinder 833, or is layer of soft magnetic material more than one deck, or all is layer of soft magnetic material, to produce the magnetic field that varying strength requires.Magnetic field production part 83 has the scarf 832 that connects from the top downwards to a side at cup 81 centers, and it is the otch 831 that disconnects from top to bottom that the magnetic circuit of magnetic field production part 83 disconnects opening, and the middle part of magnetic field production part 83 has the through hole 834 of up/down perforation.Otch 831 distances of magnetic field production part 83 can be greater than electromagnetism physical clearance actual between two contacts staggered relatively in the switch, to guarantee the intensity of longitudinal magnetic field between two contacts.The scarf 832 of magnetic field production part 83 is along the laterally zygomorphic scarf of column central shaft, i.e. scarf top excision arc equates with the undercut arc.Conductive component 82 shaped upper parts have corresponding with the magnetic field production part fit accept scarf 823, conductive component 82 is multi-layer cylinder 821 structures of different-diameter cylindrical shell fit in the present embodiment, and the center of cylindrical shell 821 is provided with the cylinder 822 that inserts magnetic field production part 83 middle part through holes 834.
Arcing parts 84 are the sheet material or the bulk of the pure evanohm material of fine copper.For further reducing the cost of material, arcing parts 84 no longer adopt special fine copper, the pure chromium alloy material of producing, and adopt fine copper, pure chromium powder mixture, can be 10: 90 to 90 to 10 according to the ratio of two kinds of materials in the different fine copper of specific requirement, the pure chromium powder mixture.And pure copper powder is-325 orders; Pure chromium powder is-325 orders.And pure copper powder is for to replace with silver powder.
Magnetic field production part 83 among this embodiment 1 and conductive component 82 involutory tangent planes are cut structure for the average equal portions of symmetry, shown in Fig. 6,7.As most preferred embodiment, like this owing to magnetic field production part 83 cooperates with the symmetry that is shaped as of conductive component 82, make the material of a contact magnetic field production part 83 and conductive component 82, the part of downcutting just in time is the magnetic field production part 83 and conductive component 82 of another contact, on the material without any waste, can make full use of, and heat conductivility is better.
Embodiment 2: as shown in Figure 8, magnetic field production part in the foregoing description 1 83 and conductive component 82 involutory tangent planes are that unequal equal portions are cut structural representation.Magnetic field production part 83 columns along the column central shaft up and down the cross section after asymmetric the cutting sth. askew be trapezoidal 835, just from positive side, the area of magnetic field production part 83 can be greater than the area of conductive component body 82, to satisfy different performance requirements.
Embodiment 3: as shown in Figure 9, magnetic field production part in the foregoing description 1 83 and conductive component 82 involutory tangent planes are that another kind of unequal equal portions are cut structural representation.Magnetic field production part 3 columns along the column central shaft up and down the cross section after asymmetric the cutting sth. askew be triangle 836, promptly just from positive side, the area of magnetic field production part 83 can be less than the area of conductive component body.
Embodiment 4: as shown in figure 10, the conductive component 82 in the foregoing description 1 no longer is the multi-layer cylinder consistent with the magnetic field production part, but a complete entity, shape and magnetic field production part cooperatively interact.
Embodiment 5: as shown in figure 11, have only two-layer pure iron layer 837 example structure schematic diagram in the sandwich construction of the utility model contact magnetic field production part 83.What setting of layer of soft magnetic material can be according to the magnetic field intensity requirements set of reality, and magnetic field intensity requires high, and the number of plies just should be many; Magnetic field intensity requires to hang down a bit, and the number of plies just can be lacked.
According to structural design of the present utility model, the technology of switch contact production can be reduced to a high-temperature processing method and finish whole assembling.And production method do not re-use solderer's preface, not only saved scolder, and guaranteed the reliability that each parts connect, and the qualification rate height.
Claims (32)
1, a kind of contact of integrated power switch, it comprises arcing parts, conductive component, magnetic field production part, it is characterized in that: described arcing parts, conductive component, magnetic field production part all are arranged in the container that a top has open ports; Conductive component and magnetic field production part cooperatively interact and are arranged at the bottom of container, and the arcing parts are arranged on conductive component and the magnetic field production part is formed on the end face of back formation; The magnetic field production part has the opening that magnetic circuit disconnects.
2, contact of integrated power switch according to claim 1 is characterized in that: the configuration that described conductive component, magnetic field production part are equipped with is for producing the longitudinal magnetic field configuration.
3, contact of integrated power switch according to claim 1 is characterized in that: described container can be cup.
4, contact of integrated power switch according to claim 1 is characterized in that: described container material is the rigidity material that fusing point is higher than inner each parts fusing point.
5, contact of integrated power switch according to claim 4 is characterized in that: described container can be fusing point and is higher than 1100 ℃ of stainless steels.
6, contact of integrated power switch according to claim 1 is characterized in that: described arcing parts are fine copper, pure chromium powder mixture.
7, contact of integrated power switch according to claim 6 is characterized in that: the ratio of described fine copper, pure chromium powder mixture can be 10: 90 to 90: 10.
8, according to claim 6 or 7 described contact of integrated power switch, it is characterized in that: described pure copper powder is-80 orders---400 orders; Pure chromium powder is-80 orders---400 orders.
9, contact of integrated power switch according to claim 8 is characterized in that: described pure copper powder is-200 orders---400 orders; Pure chromium powder is-200 orders---400 orders.
10, contact of integrated power switch according to claim 9 is characterized in that: described pure copper powder is-325 orders; Pure chromium powder is-325 orders.
11, according to claim 6,7,8,9 or 10 described contact of integrated power switch, it is characterized in that: described pure copper powder is a silver powder.
12, contact of integrated power switch according to claim 1 is characterized in that: described arcing parts are the sheet material or the bulk of the pure evanohm material of fine copper.
13, contact of integrated power switch according to claim 12 is characterized in that: described fine copper material is silver-colored material.
14, contact of integrated power switch according to claim 1 is characterized in that: described conductive component can be the material of conduction, high magnetic resistance and heat conduction.
15, contact of integrated power switch according to claim 14 is characterized in that: described conductive component fine copper or red copper material.
16, according to claim 1 or 14 or 15 described contact of integrated power switch, it is characterized in that: the form of described conductive component can be powder or sheet material or bar or tubing or bulk.
17, according to claim 1 or described contact of integrated power switch, it is characterized in that: described magnetic field production part partly or entirely is the soft magnetism material.
18, according to claim 1 or 17 described contact of integrated power switch, it is characterized in that: the form of described magnetic field production part part is powder or sheet material or bar or tubing or bulk.
19, contact of integrated power switch according to claim 18 is characterized in that: described soft magnetism material is the electrical pure iron material.
20, contact of integrated power switch according to claim 19 is characterized in that: the form of described soft magnetism material can be powder or sheet material or bar or tubing or bulk.
21, contact of integrated power switch according to claim 1, it is characterized in that: described magnetic field production part has the scarf that connects from the top downwards to a side of container center, it is the otch that disconnects from top to bottom that the magnetic circuit of magnetic field production part disconnects opening, and the middle part of magnetic field production part has the through hole of up/down perforation.
22, according to claim 2 or 21 described contact of integrated power switch, it is characterized in that: the involutory back of described magnetic field production part and conductive component base shape is for meeting the column of cup container shapes.
23, contact of integrated power switch according to claim 22 is characterized in that: described column can be the above different-diameter cylindrical shell of one deck layer by layer between the insulation fit the multi-layer cylinder structure, it is layer of soft magnetic material that one deck is wherein arranged in the multi-layer cylinder.
24, contact of integrated power switch according to claim 23 is characterized in that: described multi-layer cylinder wherein is layer of soft magnetic material more than one deck.
25, contact of integrated power switch according to claim 24 is characterized in that: described multi-layer cylinder is layer of soft magnetic material.
26, contact of integrated power switch according to claim 21 is characterized in that: the scarf of described magnetic field production part is along the laterally zygomorphic scarf of column central shaft, i.e. scarf top excision arc equates with the undercut arc.
27, contact of integrated power switch according to claim 21, it is characterized in that: the scarf of described magnetic field production part column is for along column central shaft asymmetrical scarf up and down, i.e. scarf top excision arc is not equal to remaining arc after the undercut.
28, contact of integrated power switch according to claim 27 is characterized in that: described magnetic field production part column along the column central shaft up and down the cross section after asymmetric the cutting sth. askew be triangle.
29, contact of integrated power switch according to claim 27 is characterized in that: described magnetic field production part column along the column central shaft up and down the cross section after asymmetric the cutting sth. askew be trapezoidal.
30, according to claim 21,26,27,28 or 29 described contact of integrated power switch, it is characterized in that: described conductive component shaped upper part has the scarf of accepting of corresponding applying with the magnetic field production part.
31, contact of integrated power switch according to claim 30 is characterized in that: described conductive component is the multi-layer cylinder structure of different-diameter cylindrical shell fit, and the center of cylindrical shell is provided with the cylinder that inserts production part middle part, magnetic field through hole.
32, according to claim 23 or 31 described contact of integrated power switch, it is characterized in that: described magnetic field production part multi-layer cylinder equates with the multi-layer cylinder number of plies of conductive component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01207231 CN2463943Y (en) | 2001-02-28 | 2001-02-28 | Integrated power switch contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01207231 CN2463943Y (en) | 2001-02-28 | 2001-02-28 | Integrated power switch contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463943Y true CN2463943Y (en) | 2001-12-05 |
Family
ID=33627678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01207231 Expired - Lifetime CN2463943Y (en) | 2001-02-28 | 2001-02-28 | Integrated power switch contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463943Y (en) |
-
2001
- 2001-02-28 CN CN 01207231 patent/CN2463943Y/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 | ||
| C56 | Change in the name or address of the patentee |
Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER NAME OR ADDRESS: BEIJING DONGFANG ELECTRONIC GROUP CORP., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: BOE Technology Group Co., Ltd. Patentee before: Beijing Dongfang Electronics Group Corp., Ltd. |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040414 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |