CN1778025A - Surge absorber and production method therefor - Google Patents
Surge absorber and production method therefor Download PDFInfo
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- CN1778025A CN1778025A CN 200480010552 CN200480010552A CN1778025A CN 1778025 A CN1778025 A CN 1778025A CN 200480010552 CN200480010552 CN 200480010552 CN 200480010552 A CN200480010552 A CN 200480010552A CN 1778025 A CN1778025 A CN 1778025A
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Abstract
The present invention provides a surge absorber comprising an insulating member on the peripheral surface of which a conductive film is dividedly formed via a discharge gap, a pair of terminal electrodes disposed opposite to this insulating member and in contact with the conductive film, and an insulating tube having the pair of electrodes disposed at the opposite ends thereof to seal the insulating member along with a sealing gas thereinside, wherein a conductive unit is provided at least between the end face of the conductive film and a terminal electrode. Consequently, a surge absorber having stable performance and quality and an excellent durability can be provided at low costs.
Description
Technical field
The present invention relates to the surge absorber that is subjected to the various device of surge impact, accident is prevented trouble before it happens in order to protection.
Background technology
In order to prevent, on the part of the coupling part of the electronic equipment that is subjected to easily using and order wire or the abnormal current (surge current) of power line, antenna or CRT drive circuit etc., lightning surge and static etc. or the electric shock that abnormal voltage (surge voltage) causes, be connected surge absorber by the communication equipment of telephone set, facsimile machine, modulator-demodulator etc. owing to abnormal voltage is given electronic equipment or carried the destruction that the printed circuit board (PCB) in this equipment brings fire damage or ignition to cause.
So far, for example proposed that the spy opens the described discharge-type surge absorber of flat 9-171881 communique, wherein be provided with: be configured in the glass tube, two ends are provided with the element of terminal electrode; Be connected to respectively the terminal electrode that is inserted in the glass tube two ends, the one end connects a pair of Dumet wire in order to the lead-in wire that is connected with external circuit; Outer respectively being connected on each Dumet wire and simultaneously is connected to the glass tube both ends and the columnar liner at sealed glass tube two ends.At this moment, owing to the contact instability of Dumet wire with terminal electrode, discharge ionization voltage is easy to generate fluctuation.In addition, because the area of terminal electrode is big, fee of material increases, and is also unfavorable aspect cost.
In addition, follow the miniaturization of electronic equipment, the discharge-type surge absorber is also to the mounted on surface development.The surge absorber of surface installing type (MELF type) is provided with the terminal electrode that does not have lead-in wire, to the installation of substrate the time, with the terminal electrode soldering on substrate.In such surge absorber, have that use is for example special opens such surge absorbing element with microgap shown in 2002-110311 communique and the Te Kai 2002-134247 communique, the structure example of this surge absorber is shown in Figure 10.
The structure of surge absorbing element 1 is, the surperficial central portion of the columned ceramic component (insulating component) 3 that covers with conductive cell envelope 2 forms so-called microgap M around, adopts a pair of cap electrode 4 is installed at the two ends of ceramic component 3.Surge absorbing element 1 together is housed in the glass tube 5 with sealing gas, by the both ends with heat sealed glass tube 5, forms the surge absorber of discharge-type with opposed pair of terminal electrode 6.
, in recent years for surge absorber, except requiring cheapness to provide to increase stable performance and quality, also require to have the product of high-durability and high surge capacity.Therefore, the dimensional accuracy of surge absorbing element and glass tube and terminal electrode has just become problem.Particularly between surge absorbing element and enclosed electrode, do not produce the gap, make both reliably make contact to the important techniques problem.
In addition, even in recent years for the purposes of essential high surge capacity such as communication line and power line, also requiring surge absorber to have can fully corresponding performance.Also have, in the surge absorber of MELF type, during installation, glass tube has damaged possibility.So, considered to change glass tube into earthenware.In the surge absorber that uses glass tube, the ceramic component of packing in glass tube is being provided with on the two ends of glass tube under the state of terminal electrode, by make the glass tube fusion with high temperature furnace, closely is fixed on sealed glass tube on the terminal electrode.During the cooling of the glass tube after sealing, because the residual stress of the difference generation compression direction of the thermal coefficient of expansion of glass tube and ceramic component can obtain sufficient ohmic contact between the conductive cell envelope of terminal electrode and ceramic component.
But, use under the situation of earthenware replacing glass tube, because the above-mentioned situation of diversity ratio of the thermal coefficient of expansion of earthenware and ceramic component is little, the residual stress that takes place during cooling is little, the inadequate situation of ohmic contact that has the conductive cell envelope of terminal electrode and ceramic component, it is unstable that this occasion, electrical characteristics such as discharge ionization voltage just become.
The present invention In view of the foregoing conceives just, its purpose be cheapness provide have stable performance and quality, good durability and the surge absorber of high surge capacity.
Summary of the invention
In the present invention, in order to solve above-mentioned problem, adopted following structure.
Surge absorber of the present invention is characterised in that, wherein is provided with: make discharging gap cut apart conductive cell envelope and the insulating component that forms between the centre; Follow the contacted pair of terminal electrode of above-mentioned conductive cell envelope of relative configuration with this insulating component; And by dispose the insulating properties pipe that above-mentioned pair of terminal electrode together is sealed in above-mentioned insulating component and sealing gas inside at two ends; At least between above-mentioned conductive cell envelope and above-mentioned terminal electrode, be provided with current-carrying part.
For example, surge absorber of the present invention is characterised in that it is the surge absorber that is provided with following member: make discharging gap cut apart conductive cell envelope and the column insulating component that forms between the centre on side face; The pair of terminal electrode relative at the two ends of this insulating component with above-mentioned conductive cell envelope; And above-mentioned insulating component and sealing gas together be sealed in inner insulating properties pipe; Contain filler, with the gap between above-mentioned conductive cell envelope of landfill and the above-mentioned terminal electrode as the conductivity of above-mentioned current-carrying part.
In this surge absorber, with the filler landfill of conductivity owing to dimensional accuracy, scar, add the gap that the distortion in man-hour produces on the contact-making surface of terminal electrode and conductive cell envelope.Thereby can obtain the abundant ohmic contact between terminal electrode and the conductive cell envelope, make that the electrical characteristics such as discharge ionization voltage of surge absorber are stable.
In addition, surge absorber of the present invention is characterised in that, is provided with following member: make above-mentioned discharge gap cut apart conductive cell envelope and the column insulating component that forms between the centre on side face; The pair of terminal electrode relative at the two ends of this insulating component with above-mentioned conductive cell envelope; And above-mentioned insulating component and sealing gas together be sealed in inner insulating properties pipe; Between above-mentioned conductive cell envelope and above-mentioned terminal electrode, hardware is set, is provided with filler simultaneously, with the gap between above-mentioned hardware of landfill and the above-mentioned terminal electrode as the conductivity of above-mentioned current-carrying part.
In this surge absorber, with the filler landfill of conductivity owing to dimensional accuracy, scar, add the gap that the distortion etc. in man-hour produces on the contact-making surface of terminal electrode and hardware.Thereby, can obtain the abundant ohmic contact of terminal electrode and hardware, make that the electrical characteristics such as discharge ionization voltage of surge absorber are stable.
In addition, in this surge absorber, be preferably on mutual opposed the main discharge face as above-mentioned pair of metal member and form oxide-film with oxidation processes.
In this surge absorber, the abnormal current of the electric surge of invading from the outside etc. and abnormal voltage as triggering, are main discharge face between to carry out main discharge absorb surge mutual opposed of pair of metal member with the discharge of microgap.Here, by on the main discharge face, forming oxide-film, can obtain the good main discharge face of high-temperature area chemical stability.And the electrode composition that prevents main discharge face when main discharge disperses and is attached to the positions such as inwall of microgap and insulating properties pipe, can realize the long lifetime of surge absorber.In addition, because the adhesive force of this oxide-film and main discharge face is good, can bring into play above-mentioned characteristic conscientiously.Moreover, because the metal that there is no need to use the superior high price of high-temperature area chemical stability, can adopt the material of cheap metal as hardware as hardware.
In addition, in this surge absorber, the average film thickness of above-mentioned oxide-film is preferably more than the 0.01 μ m.
In this surge absorber, because the average film thickness of oxide-film more than 0.01 μ m, can fully suppress the dispersing of electrode composition of the hardware that caused by main discharge.
In addition, in this surge absorber, preferably be provided with from above-mentioned terminal electrode to the inboard of above-mentioned insulated tube and outstanding vertically and maintaining part that form, keep above-mentioned insulating component.
In this surge absorber,, insulating component is configured near the central and periphery of terminal electrode reliably owing to adopt retaining member to keep.As a result, make discharge ionization voltage stable, prevent that insulating component is displaced to the end side of terminal electrode, thereby can realize the long lifetime of surge absorber.
In addition, in this surge absorber, the pressure of above-mentioned sealing gas is preferably negative pressure.
In this surge absorber, because the pressure of sealing gas is negative pressure, when the insulating properties pipe of cooling after sealed, because the atmospheric effect higher than the pressure of sealing gas, terminal electrode is produced the power of compression direction, because the power with this compression direction makes conductive cell envelope contact with terminal electrode, can obtain more reliable ohmic contact.
In addition, surge absorber of the present invention is characterised in that, is provided with following member: make discharging gap cut apart conductive cell envelope and the column insulating component that forms between the centre on side face; The pair of terminal electrode relative at the two ends of this insulating component with above-mentioned conductive cell envelope; And dispose this to terminal electrode, above-mentioned insulating component and sealing gas together are sealed in inner insulating properties pipe by be welded on two ends with scolder; Be used as the bonding above-mentioned conducting film of conductive adhesive and the above-mentioned terminal electrode of current-carrying part.
In this surge absorber, by bonding terminal electrode of bonding agent and conductive cell envelope, can obtain the abundant ohmic contact of terminal electrode and conductive cell envelope with conductivity, make that the electrical characteristics such as discharge ionization voltage of surge absorber are stable.In addition, near and the periphery by the central authorities that insulating component are fixed on terminal electrode can make discharge ionization voltage stable, realizes the long lifetime of surge absorber.
Also have, surge absorber of the present invention is characterised in that, is provided with following member: make discharging gap cut apart conductive cell envelope and the column insulating component that forms between the centre on side face; The pair of terminal electrode relative at the two ends of this insulating component with above-mentioned conductive cell envelope; And dispose this to above-mentioned terminal electrode, above-mentioned insulating component and sealing gas together are sealed in inner insulating properties pipe by be welded on two ends with scolder; Between above-mentioned conductive cell envelope and above-mentioned terminal electrode, hardware is set, is used as the bonding above-mentioned hardware of bonding agent and the above-mentioned terminal electrode of the conductivity of current-carrying part.
In this surge absorber, by bonding terminal electrode of bonding agent and hardware, can obtain the abundant ohmic contact of terminal electrode and hardware with conductivity, make that the electrical characteristics such as discharge ionization voltage of surge absorber are stable.In addition, near and the periphery by the central authorities that insulating component are fixed on terminal electrode can make discharge ionization voltage stable, realizes the long lifetime of surge absorber.
Also have, in this surge absorber, be preferably in as forming the oxide-film that produces by oxidation processes on mutual opposed the main discharge face of above-mentioned pair of metal member.
In this surge absorber, the abnormal current of the electric surge of invading from the outside etc. and abnormal voltage as triggering, are main discharge face between to carry out main discharge and absorb surge mutual opposed of pair of metal member with the discharge of microgap.Here, owing on the main discharge face, form oxide-film, can obtain the good main discharge face of high-temperature area chemical stability.Thereby the electrode composition of main discharge face disperses and attached on microgap and the insulating properties inside pipe wall when preventing main discharge, thereby realizes the long lifetime of surge absorber.In addition, because the adhesive force of this oxide-film and main discharge face is good, can bring into play above-mentioned characteristic conscientiously.Moreover, owing to needn't use the good high price metal of high-temperature area chemical stability, can use the material of cheap metal as hardware as hardware.
In addition, in this surge absorber, the average film thickness of above-mentioned oxide-film is preferably more than the 0.01 μ m.
In this surge absorber, because the average film thickness of oxide-film is taken as more than the 0.01 μ m, can fully suppress the dispersing of electrode composition of the hardware that causes because of main discharge.
In addition, in this surge absorber, above-mentioned scolder forms with the most handy different material of above-mentioned bonding agent.
In this surge absorber, because scolder forms with different separately materials with bonding agent, when the bonding or terminal electrode of bonding, the terminal electrode of terminal electrode and conductive cell envelope and hardware and insulating properties pipe bonding, can select for use to have the material of suitable adhesive strength.
In addition, this surge absorber preferably is provided with: from above-mentioned terminal electrode to the inboard of above-mentioned insulating properties pipe and at the axial outstanding and retaining member that forms, keep above-mentioned insulating component.
In this surge absorber,, make near its central authorities that are configured in terminal electrode reliably and periphery by keeping insulating component with retaining member.As a result, make discharge ionization voltage stable, prevent that insulating component is displaced to the end side of terminal electrode, thereby realize the long lifetime of surge absorber.
In addition, identical, different with the above-mentioned bonding agent material of the most handy and above-mentioned scolder of above-mentioned retaining member forms.
Perhaps, identical, different with the above-mentioned scolder material of the most handy and above-mentioned bonding agent of above-mentioned retaining member forms.
In this surge absorber, by retaining member and scolder or bonding agent are formed with commaterial, can cut down the part number, surge absorber is made easily.
Perhaps, the different material of the most handy and above-mentioned bonding agent of above-mentioned retaining member and above-mentioned scolder forms.
In this surge absorber, as retaining member, owing to use the material that conductive cell envelope or hardware, terminal electrode, bonding agent and scolder are difficult to soak into, when the sealed insulating properties pipe of cooling, the bump height of retaining member increases.Thereby, can insulating component is more fixing.
In addition, in this surge absorber, the pressure of above-mentioned sealing gas is preferably negative pressure.
In this surge absorber, because the pressure of sealing gas is negative pressure, when cooling off sealed insulating properties pipe, because the atmosphere higher than the pressure of sealing gas produces the power of compression direction to terminal electrode.By power conductive cell envelope is contacted with terminal electrode, can obtain more reliable ohmic contact with this compression direction.
In addition, surge absorber of the present invention is characterised in that, wherein is provided with: make discharging gap cut apart conductive cell envelope and the column that forms or tabular insulating component between the centre on side face; The pair of terminal electrode relative at the two ends of this insulating component with above-mentioned conductive cell envelope; And by disposing above-mentioned pair of terminal electrode at two ends, above-mentioned insulating component and sealing gas together being sealed in inner insulating properties pipe; The buffer component of conductivity is set, as above-mentioned current-carrying part between above-mentioned conductive cell envelope and above-mentioned terminal electrode.
According to this surge absorber, the buffer component of conductivity is set between the end face of conductive cell envelope and terminal electrode, can absorb dimensional tolerance by the compression buffer component, can reliably connect the end face and the terminal electrode of conductive cell envelope across padded coaming.Thereby, need not to carry out tight dimensional tolerance management, can cheap manufacturing can between conductive cell envelope and terminal electrode, reliable stream cross high-quality surge absorber surge current, that have the stable discharging performance.
The setting of above-mentioned buffer component is specially adapted to the surge absorber of bonding terminal electrode on the both ends of the surface of insulating properties pipe.
In addition, as above-mentioned buffer component, can adopt in metallic plate or metal forming, foaming metal, fibre metal or the scolder any.
In addition, be preferably on the above-mentioned buffer component and be provided with in order to keep the protrusion of above-mentioned insulating component two ends outer peripheral face.
Since by on buffer component, be provided with keep insulating component two ends outer peripheral face protrusion with the insulating component secure fixation, even in the environment for use of the influence that is subjected to for example vibrating, also can obtain having the surge absorber of stable discharge ionization voltage.
In addition, the manufacture method of this surge absorber is characterised in that, is provided with following member: make discharging gap cut apart conductive cell envelope and the column that forms or tabular insulating component between the centre on side face; The pair of terminal electrode relative on the both ends of the surface of insulating component with above-mentioned conductive cell envelope; And by disposing above-mentioned pair of terminal electrode at two ends, above-mentioned insulating component and sealing gas together being sealed in inner insulating properties pipe; Between the end face of the above-mentioned conductive cell envelope that inserts above-mentioned insulating properties pipe inside and above-mentioned terminal electrode, above-mentioned buffer component is set, above-mentioned terminal electrode is bonded in the two ends of above-mentioned insulating properties pipe.
According to the manufacture method of this surge absorber, buffer component bears the extruding of terminal electrode and is compressed, and can absorb dimensional tolerance, and the end face of conductive cell envelope reliably is connected across padded coaming with terminal electrode.Thereby, need not to carry out tight dimensional tolerance management, can cheap be manufactured between the end face of conductive cell envelope and the terminal electrode and can flow through high-quality surge absorber surge current, that have stable discharge performance conscientiously.
The simple declaration of accompanying drawing
Fig. 1 (A) is the profile of the surge absorber of expression the present invention the 1st embodiment.
Fig. 1 (B) is the profile of the 1st variation of the surge absorber of expression the present invention the 1st embodiment.
Fig. 1 (C) is the profile of the 2nd variation of the surge absorber of expression the present invention the 1st embodiment.
Fig. 2 is the decomposition diagram that is shown in the surge absorber of Figure 1A.
Fig. 3 A is the perspective view of the surge absorbing element in the surge absorber of expression the present invention the 2nd embodiment.
Fig. 3 B is the part sectioned view of Fig. 3 A.
Fig. 4 is the profile of the surge absorber of expression the present invention the 3rd embodiment.
Fig. 5 A is the profile of the surge absorber of expression the present invention the 4th embodiment.
Fig. 5 B is the enlarged drawing of the contact portion of terminal electrode among Fig. 5 A and cylindrical ceramic.
Fig. 6 is the profile that an example is contained in the surge absorber of the present invention on the substrate.
Fig. 7 A is the profile of the surge absorber of expression the 5th embodiment of the present invention.
Fig. 7 B is the enlarged drawing of the contact portion of terminal electrode among Fig. 7 A and cylindrical ceramic.
Fig. 8 A is the profile of the surge absorber of expression the present invention the 6th embodiment.
Fig. 8 B is the enlarged drawing of the contact portion of terminal electrode among Fig. 8 A and cylindrical ceramic.
Fig. 9 A is the profile of the surge absorber of expression the present invention the 7th embodiment.
Fig. 9 B is the enlarged drawing of the contact portion of terminal electrode among Fig. 9 A and cylindrical ceramic.
Figure 10 is the profile of the traditional surge absorber of an example.
Most preferred embodiment of the present invention
Following the 1st embodiment that surge absorber of the present invention and manufacture method thereof are described with reference to Figure 1A and Fig. 2.Moreover Figure 1A is the profile of surge absorber, and Fig. 2 is the decomposition diagram of Figure 1A.
The surge absorber 10 of present embodiment is to use the discharge-type surge absorber of so-called microgap, by in tubular pottery (insulating properties pipe) 15, together take in surge absorbing element 11 with sealing gas, the bonding terminal electrode 16 of difference on the end face 15a at insulating properties pipe 15 two, sealing tubular pottery 15.
In addition, on the both ends of the surface 15a of tubular pottery 15, through electroplated Ni (nickel) after the metalized of for example Mo (molybdenum)-Mn (manganese).Moreover the metallization of both ends of the surface 15a is not limited to adopt Mo (molybdenum)-Mn (manganese), for example also can adopt Mo-W (tungsten), Ag (silver), Cu (copper), Au (gold) etc., and can not nickel plating.Perhaps, also available active silver solder or glass form metal layer as an alternative on both ends of the surface 15a.
Here, as the example of the insulating component that can be used in tubular pottery 15, can exemplify: Al
2O
3(aluminium oxide), ZrO
2(zirconia), glass ceramics, Si
3N
4(silicon nitride), AlN (aluminium nitride), SiC insulating ceramicses such as (carborundum).
In addition, about employed sealing gas, so long as at high temperature Ionized gas can comprise air, if but consider high temperature stability down, then preferably employing is for example: He (helium), Ar (argon), Ne (neon), Xe (xenon), SF
6, CO
2(carbon dioxide), C
3F
8, C
2F
6, CF
4, H
2The mist more than a kind or 2 kinds of (hydrogen) etc.
Surge absorbing element 11 has such structure: comprehensively coated with the conductive cell envelope 12 of the film of Ti (titanium) etc., form the microgap M as discharging gap on side face on cylindrical ceramic (insulating component) 13.
This microgap M along the circumferential direction removes conductive cell envelope 12, the part that cylindrical ceramic 13 is exposed near the axial central authorities of cylindrical ceramic 13.Its result, conductive cell envelope 12 is divided into two by the microgap and becomes electric insulating state.The formation of such discharging gap M can be carried out with methods such as laser cutting, machine cuts or corrosion.Moreover discharging gap M forms about 1～100 with the width about 0.01～1.5mm.
Cylindrical ceramic 13 is the insulating ceramicses that for example are made of mullite sintered body etc., in addition, and also can be with for example: Al
2O
3(aluminium oxide), ZrO
2(zirconia), glass ceramics, Si
3N
4(silicon nitride), AlN (aluminium nitride), SiC insulating ceramicses such as (carborundum).
In addition, in the formation of conductive cell envelope 12, can adopt physical vapor deposition (PVD) method or chemical vapor deposition (CVD) method.Have again, except above-mentioned Ti film, also for example can use: SnO
2(tin oxide), TiCN (titanium carbonitride), Ag (silver), Ag (silver)/Pd (palladium), Al (aluminium), Ni (nickel), Cu (copper), TiN (titanium nitride), Ta (tantalum), W (tungsten), SiC (carborundum), BaAl, C (carbon), Ag (silver)/Pt (platinum), TiO
2(titanium oxide), TiC conductive cell envelopes 12 such as (titanium carbides).
After surge absorbing element 11 with said structure is inserted among the hollow bulb 15b of tubular pottery 15, by terminal electrode 16 is bonded on the both ends of the surface 15a, together seal with sealing gas, and the buffer component (current-carrying part) 17 of conductivity is set between the end face 11a of surge absorbing element 11 and terminal electrode 16 this moment.Because this buffer component 17 is the members that comprise the material of immobilization material, support material and easy deformation, in the following description they is generically and collectively referred to as " buffer component ".
In constituting the electrode material of terminal electrode 16, except for example Kovar alloy (registered trade mark), can use Cu (copper), Cu (copper) is and Ni (nickel) is alloy material etc.This terminal electrode 16 is connected to surge protection circuit etc.Moreover the sealing of terminal electrode 16 can be adopted soldering or glass etc.
Here, as the concrete example of metallic plate or metal forming, can exemplify: Ag (silver), Cu (copper), Al (aluminium), Au (gold), Ni (nickel), Pd (palladium), Sb (antimony), Zn (zinc), In (indium), Sn (tin), Pb (lead), Bi (bismuth), Ti (titanium), stainless steel material and comprise alloy more than 2 kinds of above-mentioned metal etc.
In addition, foaming metal is the metal of porous matter state, also can be to have at bonding tubular pottery 15 to compress with the cylindrical ceramic 13 of formation microgap M during with terminal electrode 16 and the metal of the character of being out of shape.As concrete foaming metal, known have Ni (nickel), Cu (copper), Al (aluminium), Mg (magnesium), Co (cobalt), W (tungsten), Mn (manganese), Cr (chromium), Be (beryllium), Ti (titanium), Au (gold), Ag (silver), Fe (iron), stainless steel, carbon steel, Fe (iron) alloy, Ni (nickel alloy) etc., but also can adopt the metal that makes after the metal used on above-mentioned metallic plate or the metal forming or the alloy more than 2 kinds become foamed state.
In addition, fibre metal is to make its structure with resiliency with being formed thread metal knitted one-tenth, also can be at bonding tubular pottery 15 during with terminal electrode 16, has that cylindrical ceramic 13 with formation microgap M compresses and the metal of the character of being out of shape.As concrete fibre metal, the known fibre metal that Ti (titanium), Al (aluminium), C (carbon), stainless steel etc. are arranged, and also can adopt fibre metal by metal that uses on above-mentioned metallic plate or the metal forming or the alloy more than 2 kinds.
In addition, in the suitable scolder of buffer component 17, for example have: Ag (silver)-Cu (copper), Ag (silver)-Cu (copper)-In (indium), Ag (silver)-Cu (copper)-Sn (tin) etc.
In the surge absorber 10 of said structure since between the end face 11a of surge absorbing element 11 and terminal electrode 16 at the state lower seal of buffer component 17 compressions, impossible gapped, can contact and conducting reliably.That is, owing to the distortion by buffer component 17 of the scale error of surge absorbing element 11 and tubular pottery 15 can be absorbed, between end face 11a that has formed conductive cell envelope 12 and terminal electrode 16, do not produce the gap.
Thereby, can obtain the little stable discharge performance of deviation between product, can be formed in the high-quality surge absorber 10 in durability and reliability aspect.In addition, because the dimensional tolerance of surge absorbing element 11 and tubular pottery 15 is relaxed, can obtain to reduce the effect of manufacturing cost.
In addition, in the embodiment shown in above-mentioned Figure 1A, surge absorbing element 11 is to have made direct contacting structure with buffer component 17, and also can make the such structure of the 2nd variation shown in the 1st variation shown in Figure 1B or Fig. 1 C.
The surge absorber 10 of the 1st variation shown in Figure 1B ' in, buffer component 17 is arranged to make between its end face 15a and terminal electrode 16 that is clamped in tubular pottery 15 to the peripheral direction expansion.
Below, according to Fig. 3, the 2nd embodiment with above-mentioned buffer component 17 is described.Moreover part same as the previously described embodiments is with identical mark, and it describes omission in detail.
In the present embodiment, integrated setting has buffer component 17A to replace independent buffer component 17 on the both ends of the surface of surge absorbing element 11A.This buffer component 17A be with the both ends of the surface of the same surge absorbing element 11A that makes of the foregoing description on structure after carrying out bonding becoming one such as grade.
At this moment, insert surge absorbing element 11A in the hollow bulb 15b of tubular pottery 15, owing to reduced the number of packages of independent member, the group device operation of the surge absorber 10 that said and sealing gas G together seal with terminal electrode 16 becomes easy.
In addition,, become reliably, can obtain stable discharge ionization voltage with contacting of terminal electrode owing to there is buffer component 17A.
Then, according to Fig. 4, the 3rd embodiment that above-mentioned buffer component 17 is set is described.Moreover part same as the previously described embodiments is with identical mark, and it describes omission in detail.
In the present embodiment, on the two ends of surge absorbing element 11, be pressed into formation cap electrode 18.And, between cap electrode 18 and terminal electrode 16, buffer component 17B is set.On this buffer component 17B, be provided with and highly be the protrusion 19 of h, make it keep the outer peripheral face of cap electrode 18 at the two ends of surge absorbing element 11.That is the both ends of surge absorbing element 11 (at this moment being cap electrode 18) is held, and makes among its buffer component 17B that is embedded in the protrusion 19 that is formed by fusion.Moreover the height of protrusion 19 is to swelling the size of topmost from the end face of terminal electrode 16.
In addition, if padded coaming 17B is adopted scolder, then when keeping surge absorbing element, can the both ends of the surface 15a and the terminal electrode 16 of cylindrical member 15 be sealed.Moreover, there is not the occasion of the surge absorbing element 11 (with reference to Figure 1A and Figure 1B) of cap electrode 18 in employing, the protrusion 19 of height h also can be set, to keep the outer peripheral face at two ends.
Like this, if take to keep the structure at the two ends of surge absorbing element 11, then except effect, can also make the surge absorbing element secure fixation as above-mentioned padded coaming with protrusion 19.Thereby, owing to contact by padded coaming is reliable and stable between surge absorbing element 11 and the terminal electrode 16, stablized discharge ionization voltage.
In addition, because the height h protuberance more than 0.01mm at least is set, experimental verification, even in vibrative environment for use, also can the secure fixation surge absorbing element.
So far the surge absorber 10 that illustrated, tubular pottery 15 are quadrangulars of tubular, but the present invention is not limit by this, for example, also can be cylinder, triangular prism, the polygon prisms of tubular.In addition, the surge absorbing element 11 about based on cylindrical ceramic 13 also is not limited to cylindrical shape, also can be the various columns of for example quadrangular etc. and tabular etc., also can suitably select with the shape of tubular pottery 15.
Moreover structure of the present invention is not limited to the foregoing description, for example, is pressed between the cap electrode of shaping and the terminal electrode at the two ends of surge absorbing element modes such as buffer component are set, and in the scope that does not exceed main points of the present invention, can suitably change.
Below, the 4th embodiment of surge absorber of the present invention is described with reference to Fig. 5 A, Fig. 5 B.
The surge absorber 21 of present embodiment is to use the discharge-type surge absorber of microgap, wherein is provided with: make the discharging gap 22 of central authorities cut apart conductive cell envelope 23 and the cylindrical ceramic (insulating component) 24 of formation between the centre on side face; At the two ends of this cylindrical ceramic 24, with the pair of terminal electrode 25 that is contacted by the relative conductive cell envelope that disposes 23; And this is configured in two ends to terminal electrode, and cylindrical ceramic 24 for example is sealed in inner tubular pottery (insulating properties pipe) 27 with the sealing gas 26 of Ar (argon) etc., for the electrical characteristic that obtains wishing, the composition of sealing gas 26 has been done adjustment.
Cylindrical ceramic 24 is formed by the insulating ceramics material of mullite sintered body etc., forms film by physical vapor deposition (PVD) method, chemical vapor deposition (CVD) method etc. from the teeth outwards and forms the film that technology produces TiN (titanium nitride) etc., as conductive cell envelope.
By laser cutting, machine cuts, corrosion etc. be processed to form width from 0.01 to 1.5mm, the discharging gap 22 of from 1 to 100 of quantity, and be to form 1 of 150 μ m in the present embodiment.
Pair of terminal electrode 25 is that the metal that is used as the Kovar alloy (registered trade mark) etc. of Fe (iron), Ni (nickel) and Co (cobalt) alloy forms.
At this outer edge 25A of end face 27A that connects tubular pottery 27 is respectively arranged on to terminal electrode 25, it is simultaneously gone up coating and contains silver solder 28.
Maintaining part 211 is formed by protuberance, in order to when terminal electrode 25 contacts with cylindrical ceramic 24 scolder 28 is covered on the outer peripheral face of cylindrical ceramic.
Moreover the bump height h of this maintaining part 211 is sizes of the topmost from the end face of terminal electrode 25 to protuberance, because this topmost forms main discharge portion, is stipulated according to predetermined life characteristic.
Below, the manufacture method of sheet-shape surging absorber 21 that just has the present embodiment of above structure describes.
At first, on the one side of terminal electrode 25, coating forms the scolder 28 of the capacity of maintaining part 211, places cylindrical ceramic 24 and terminal electrode 25 is contacted with cylindrical ceramic 24 on the middle section of terminal electrode.Then, on the 25A of outer edge, place the end face of tubular pottery 27.
In addition, scolder 28 is set on the other end of tubular pottery 27, places another terminal electrode 25 in the above, as the state of interim joint.
Then, just the sealing process that cylindrical ceramic 24 and Ar gas together seal is described with pair of terminal electrode 25 and tubular pottery 27.
By the element of the state of the above-mentioned such interim joint of heat treated in Ar (argon) atmosphere, fusion welding, bonding terminal electrode 25 and cylindrical electrode pottery 27.At this moment, scolder 28 just is present in the end face 24a of cylindrical ceramic 24 and the gap 29 between the terminal electrode 25 because of fusion landfill filling part 210.In addition, because the maintaining part 211 that the surface tension of scolder 28 forms is imbedded the both ends of cylindrical ceramic 24 is kept.
Here, the pressure of sealing gas 26 is in refrigerating work procedure is located at the scope of 1Torr～600Torr.Thereby, at refrigerating work procedure, terminal electrode 25 is taken place the power of compression direction.
, by Ni (nickel), Sn (tin) electroplate, make sheet-shape surging absorber 21 thereafter.
The surge absorber of making like this 21 is placed the installed surface 27B as a side of tubular pottery 27 on the substrate B of printed circuit board (PCB) etc. shown in the example of Fig. 6, weld the outside of fixing base B and pair of terminal electrode 25 with scolding tin S and can use.
According to this surge absorber 21, the scolder landfill of the filler by being used as conductivity is because dimensional accuracy, scar, the formed gap 29 on the contact-making surface of terminal electrode 25 and the end face 24a of cylindrical ceramic 24 such as distortion that adds man-hour, and terminal electrode 25 increases with the contact area of cylindrical ceramic 24.As a result, can obtain the sufficient ohmic contact of terminal electrode and conductive cell envelope 23, make that the electrical characteristic of discharge ionization voltage etc. of surge absorber 21 is stable.
In addition, by with maintaining part 211 near the central authorities of terminal electrode 25 and periphery fixed cylinder shape pottery 24, can make discharge ionization voltage stable, the long lifetime of realization surge absorber 21.
In addition, be in 1Torr～600Torr owing to be sealed in the pressure of the sealing gas 26 between pair of terminal electrode 25 and the tubular pottery 27, generation is to the power of terminal electrode 25 compression directions, terminal electrode 25 becomes more reliable with the ohmic contact of conductive cell envelope, after refrigerating work procedure finishes, can avoid the slow leakage of atmosphere simultaneously from flowing between terminal electrode 25 and the tubular pottery 27.
Below, the 5th embodiment of surge absorber of the present invention is described with reference to Fig. 7 A and Fig. 7 B.
Moreover its basic structure of Shuo Ming embodiment is identical with the 4th embodiment of above explanation here, is to be structure after additional other key elements in the 4th above-mentioned embodiment.And, in Fig. 7 A and Fig. 7 B, and have identical symbol on Fig. 5 A and the identical inscape of Fig. 5 B, omit its explanation.
The difference of the 4th embodiment and the 5th embodiment is, corresponding to the surge absorber among the 4th embodiment 21 is cylindrical ceramic 24 and terminal electrode 25 direct contacting structure, constitute in the surge absorber 220 of the 5th embodiment, cylindrical ceramic 24 is to contact with terminal electrode 25 by being formed bowl-shape a pair of cap electrode (hardware) 221.
The hardness ratio cylindrical ceramic 24 of a pair of cap electrode 221 is lower, can be plastically deformed, and for example the metal by stainless steel etc. constitutes, and peripheral part forms with the section that is roughly the U font.
And, on the surface of a pair of cap electrode 221, by the oxide-film 222 more than the oxidation processes formation average film thickness 0.01 μ m.
Below, the manufacture method that just has the surge absorber 220 of said structure describes.
At first, on the surface of a pair of cap electrode 221,, form the above oxide-film 222 of average film thickness 0.01 μ m by carrying out in the atmosphere for example 500 ℃, 30 minutes oxidation processes.
Then, make a pair of cap electrode 221 be entrenched in the two ends of cylindrical ceramic 24, use the method manufacturing surge absorber 220 same with the 4th embodiment.
This surge absorber 220 has effect, the effect same with the surge absorber 1 of above-mentioned the 4th embodiment, because the oxide-film 222 forming with oxidation processes on the cap electrode 221 more than the average film thickness 0.01 μ m can make to have high-temperature area chemical (thermodynamics) stable properties on the main discharge face 221A.In addition, because this oxide-film 222 is good with the adhesive force of cap electrode 221, can give full play to the characteristic of oxide-film 222.Therefore, when main discharge, even cap electrode 221 is in high temperature, the metal ingredient that also can fully suppress cap electrode disperses to inwall of microgap 222 and tubular pottery 227 etc.Its result, the long-life that can realize surge absorber.
Have, the present invention is not limited to the foregoing description again, in the scope that does not exceed purport of the present invention, and all changes in addition.
For example, conductive cell envelope also can be Ag (silver), Ag (silver)/Pd (palladium) alloy, SnO
2(tin oxide), Al (aluminium), Ni (nickel), Cu (copper), Ti (titanium), Ta (tantalum), W (tungsten), SiC (carborundum), BaAl, C (carbon), Ag (silver)/Pt (platinum) alloy, TiO
2(titanium oxide), TiC (titanium carbide), TiCN (titanium carbonitride) etc.
In addition, terminal electrode also can be the alloy that Cu (copper) or Ni (nickel) are, the metal layer of tubular pottery both ends of the surface also can be Ag (silver), Cu (copper), Au (gold).
In addition, the composition of sealing gas is adjustable to obtain desired electrical characteristic, for example, can be atmosphere, also can be Ar (argon), N
2(nitrogen), Ne (neon), He (helium), Xe (xenon), H
2(hydrogen), SF
6, CF
4, C
2F
6, C
3F
8, CO
2(carbon dioxide) and their gaseous mixture.
Below, the 6th embodiment of surge absorber of the present invention is described with reference to Fig. 8 A, Fig. 8 B.
The surge absorber 31 of present embodiment is to use the discharge-type surge absorber of so-called microgap, wherein is provided with: make central discharging gap 32 cut apart conductive cell envelope 33 and the cylindrical ceramic (insulating component) 34 of formation between the centre on side face; The pair of terminal electrode 35 that contacts with conductive cell envelope 33 that disposes relatively at the two ends of this cylindrical ceramic 34; And by disposing this at two ends to terminal electrode 35, the sealing gas 36 of cylindrical ceramic 34 and for example Ar (argon) etc. together is sealed in inner tubular pottery (insulating properties pipe) 37, and the composition of sealing gas 36 etc. is adjusted to obtain desired electrical characteristic etc.
Cylindrical ceramic 34 is made of the ceramic material of mullite sintered body etc., uses the film formation technology of physical vapor deposition (PVD) method, chemical vapor deposition (CVD) method etc. to form the film of TiN (titanium nitride) etc. in its surface, as conductive cell envelope 33.
Forming the quantity of width from 0.01 to 1.5mm with processing methods such as laser cutting, machine cuts, corrosion is 1 to 100 discharging gap 32, but is to form wide 1 of 150 μ m at present embodiment.
The Kovar alloy (registered trade mark) that pair of terminal electrode 35 is used as the alloy of Fe (iron), Ni (nickel) and Co (cobalt) forms, and has separately to use by scolder 38 that Ag (silver)-Cu (copper) the is constituted bonding circumference 35A of end face 37A with tubular pottery 37.
In addition, it is bonding that the end face 34a of pair of terminal electrode 35 and cylindrical ceramic 34 uses active silver solder (current-carrying part) 39 of bonding agent of the conductivity that is made of Ag (silver)-Cu (copper)-Ti (titanium) respectively.
And the both ends outer peripheral face of cylindrical ceramic 34 uses the glass material (maintaining part) 310 that conductive cell envelope 33, terminal electrode 35, scolder 38 and active silver solder 39 are difficult to soak into to keep.The bump height h of glass material 310 is sizes of the topmost from the end face of terminal electrode 35 to protuberance, reaches more than the average thickness of scolder, in order to abundant fixed cylinder shape pottery 34.
Below, the manufacture method of sheet-shape surging absorber 31 that just has the present embodiment of above structure describes.
At first, apply active silver solder 39, on this middle section, place cylindrical ceramic 34, terminal electrode 35 is contacted with cylindrical ceramic 34 at the middle section of terminal electrode 35.Then, the periphery at middle section applies glass material 310.Solder-coating 38 on the 35A of outer edge is again placed the end face of tubular pottery 37 on the 35A of this outer edge.
Then, describe with regard to cylindrical ceramic 34 and Ar (argon) gas together being sealed in inner sealing process with pair of terminal electrode 35 and tubular pottery 37.
By the element of the above-mentioned such interim engagement state of heat treated in Ar (argon) atmosphere, fusion welding 38, active silver solder 39 and glass material 310.Because scolder 38 fusions, terminal electrode 35 is bonding with tubular pottery 37.In addition, because active silver solder 39 fusions, terminal electrode 35 is bonding with cylindrical ceramic 34.And because glass material 310 fusions, the protrusion that is formed by glass material 310 is imbedded the both ends of cylindrical ceramic 34 and is kept.
Here, the pressure of sealing gas 36 is located in refrigerating work procedure in the scope of 1Torr～600Torr.Thereby, in refrigerating work procedure, terminal electrode 35 is taken place the power of compression direction.
By plating Ni (nickel) and plating Sn (tin), make sheet-shape surging absorber 31 thereafter.
The surge absorber 31 of Zhi Zaoing is the same with the surge absorber 21 of above-mentioned the 4th embodiment like this, for example, as shown in Figure 6, on the substrate B of printed circuit board (PCB) etc., place real dress face 37B as tubular pottery 37 1 sides, with the outside of scolding tin S welding fixing base B and pair of terminal electrode 35, used then.
According to this surge absorber 31, by the end face 34a with active silver solder 39 bonding terminal electrodes 35 and cylindrical ceramic 34, terminal electrode 35 contacts reliably with cylindrical ceramic 34.Therefore, can obtain the abundant ohmic contact between terminal electrode 35 and the conductive cell envelope 33, make that the electrical characteristics such as discharge ionization voltage of surge absorber 31 are stable.
In addition,, can make discharge ionization voltage stable, realize the long lifetime of surge absorber 31 by cylindrical ceramic 34 usefulness glass materials 310 being fixed on the central portion and the periphery thereof of terminal electrode.Here, because glass material 310 is difficult to soak into conductive cell envelope 33, terminal electrode 35, scolder 38 and active silver solder 39, therefore with cylindrical ceramic 34 secure fixation.
In addition, pressure by the sealing gas 36 that will be enclosed between pair of terminal electrode 35 and tubular pottery 37 is arranged on 1Torr～600Torr, terminal electrode 35 is taken place the power of compression direction, can make the ohmic contact between terminal electrode 35 and the conductive cell envelope 33 more reliable, can avoid simultaneously after refrigerating work procedure finishes the slow leakage of atmosphere from flowing between terminal electrode 35 and the insulating properties pipe 34.
Moreover, in the present embodiment, keep the retaining member of cylindrical ceramic 34 also can be and scolder material 38 or active silver solder 39 identical materials.At this moment, because the topmost of the height h of protuberance becomes main discharge portion, therefore stipulated according to predetermined life characteristic.
Below, the 7th embodiment of surge absorber of the present invention is described with reference to Fig. 9 A, Fig. 9 B.
Moreover, Shuo Ming embodiment here, its basic structure is identical with the 6th above-mentioned embodiment, but has added other key elements in above-mentioned the 6th embodiment.Thereby, in Fig. 9 A and Fig. 9 B, on the structural elements identical, have identical mark with Fig. 8 A and Fig. 8 B, omit its explanation here.
The difference of the 7th embodiment and the 6th embodiment is, cylindrical ceramic 34 and terminal electrode 35 direct contacting structure corresponding to the surge absorber in the 6th embodiment 31, in the structure of the surge absorber 320 in the 7th embodiment, cylindrical ceramic 34 contacts with terminal electrode 35 across forming bowl-shape a pair of cap electrode (hardware) 321.
The hardness ratio cylindrical ceramic of a pair of cap electrode 321 is low, can be plastically deformed, and for example the metal by stainless steel etc. constitutes, and peripheral part forms section and is roughly U word shape.
And on the surface of a pair of cap electrode 321, by carrying out oxidation processes, forming average film thickness is the above oxide-film 322 of 0.01 μ m.In addition, the mutual opposed face with cap electrode 321 becomes main discharge face 321A.
Moreover the height h of this glass material 310 is the same with above-mentioned the 6th embodiment, becomes more than the average thickness of scolder 38, with abundant fixed cylinder shape pottery 34 and cap electrode 321
Below, just the manufacture method of the surge absorber 320 of the present embodiment that is formed by above structure describes.
At first, on the surface of a pair of cap electrode 321,, form the above oxide-film 322 of average film thickness 0.01 μ m by for example in atmosphere, carrying out 500 ℃, 30 minutes oxidation processes.
Then, make a pair of cap electrode 321 be entrenched in the two ends of cylindrical ceramic 34, use the method identical to make surge absorber 320 with the 6th embodiment.
This surge absorber 320 has effect, the effect same with the surge absorber 31 of relevant above-mentioned the 6th embodiment, oxide-film 322 by forming more than the average film thickness 0.01 μ m with oxidation processes cap electrode 321 can make main discharge face 321A possess chemically (on the thermodynamics) stable properties of high-temperature area.In addition, because this oxide-film 322 is good with the adhesive force of cap electrode, can give full play to the characteristic of oxide-film 322.Thereby even cap electrode 321 is in high temperature during main discharge, the metal ingredient that also can fully suppress cap electrode 321 disperses to inwall of microgap 32 and tubular pottery 37 etc.Its result, the life-span of surge absorber prolongs.
Moreover present embodiment is the same with the 6th above-mentioned embodiment, keeps the retaining member of cylindrical ceramic 34 also can be and scolder 38 or active silver solder 39 identical materials.At this moment, the height h of protrusion is formed lowlyer than the height of cap electrode, makes main discharge face 321A become main discharge portion.
In addition, the present invention is not limited to the foregoing description, in the scope that does not exceed purport of the present invention, can do all changes.
For example, so long as have conductivity and can bonding cylindrical ceramic and the bonding agent of terminal electrode or cap electrode and terminal electrode get final product, be not limited to active silver solder.
Also have, conductive cell envelope also can be Ag (silver), Ag (silver)/Pd (palladium) alloy, SnO
2(tin oxide), Al (aluminium), Ni (nickel), Cu (copper), Ti (titanium), Ta (tantalum), W (tungsten), SiC (carborundum), BaAl, C (carbon), Ag (silver)/Pt (platinum) alloy, TiO
2(titanium oxide), TiC (titanium carbide), TiCN (titanium carbonitride) etc.
In addition, terminal electrode can be that Cu (copper) or Ni (nickel) are alloy, also can be with the Kovar alloy (registered trade mark) of the alloy of for example Fe (iron), Ni (nickel) and Co (cobalt).
The metal layer of tubular pottery both ends of the surface can be Ag (silver), Cu (copper), Au (gold) etc.
In addition, the composition of sealing gas is adjusted to obtain desired electrical characteristic, for example, can be atmosphere (air), also can be Ar (argon), N
2(nitrogen), Ne (neon), He (helium), Xe (xenon), H
2(hydrogen), SF
6, CF
4, C
2F
6, C
3F
8, CO
2(carbon dioxide) and their mist.
Claims (17)
1. surge absorber wherein is provided with: make discharging gap cut apart conductive cell envelope and the insulating component that forms between the centre; The relative pair of terminal electrode that disposes and contact with this insulating component with described conductive cell envelope; And by disposing described pair of terminal electrode at two ends, described insulating component and sealing gas together are sealed in inner insulating properties pipe,
At least between described conductive cell envelope and described terminal electrode, be provided with current-carrying part.
2. surge absorber as claimed in claim 1 is characterized in that, is provided with: make described discharging gap cut apart described conductive cell envelope and the described insulating component of the column that forms between the centre on side face; The a pair of described terminal electrode relative at the two ends of described insulating component with described conductive cell envelope; And described insulating component and described sealing gas together be sealed in inner described insulating properties pipe,
Contain filler as the conductivity of described current-carrying part with the gap landfill between described conductive cell envelope and the described terminal electrode.
3. surge absorber as claimed in claim 1 is characterized in that, is provided with: make described discharging gap cut apart described conductive cell envelope and the described insulating component of the column that forms between the centre on side face; The a pair of described terminal electrode relative at the two ends of described insulating component with described conductive cell envelope; And described insulating component and described sealing gas together be sealed in inner described insulating properties pipe,
Between described conductive cell envelope and described terminal electrode, hardware is set, and contains filler as the conductivity of described current-carrying part with the gap landfill between described hardware and the described terminal electrode.
4. as claim 2 or 3 described surge absorbers, it is characterized in that, be provided with: from described terminal electrode at the inboard of described insulating properties pipe and at the axial outstanding and retaining member that forms, keep described insulating component.
5. as claim 2 or 3 described surge absorbers, it is characterized in that: the pressure of described sealing gas is negative pressure.
6. surge absorber as claimed in claim 1 is characterized in that, is provided with: make described discharging gap cut apart described conductive cell envelope and the described insulating component of the column that forms between the centre on side face; The a pair of described terminal electrode relative at the two ends of described insulating component with described conductive cell envelope; And by be somebody's turn to do with scolder welding described terminal electrode is configured in two ends, described insulating component and described sealing gas together are sealed in the described insulating properties pipe of inside,
Be used as the bonding described terminal electrode of bonding agent and the described conductive cell envelope of the conductivity of described current-carrying part.
7. surge absorber as claimed in claim 1 is characterized in that, is provided with: make described discharging gap cut apart described conductive cell envelope and the described insulating component of the column that forms between the centre on side face; Two ends and the opposed a pair of described terminal electrode of described conductive cell envelope at described insulating component; By being somebody's turn to do described terminal electrode is configured in two ends, described insulating component and described sealing gas together is sealed in inner described insulating properties pipe with the scolder welding,
Between described conductive cell envelope and described terminal electrode, hardware is set, is used as the bonding described hardware of bonding agent and the described terminal electrode of the conductivity of described current-carrying part.
8. as claim 6 or 7 described surge absorbers, it is characterized in that: described scolder forms with different materials with described bonding agent.
9. as claim 6 or 7 described surge absorbers, it is characterized in that, be provided with: from described terminal electrode at the inboard of described insulating properties pipe and at the axial outstanding and retaining member that forms, keep described insulating component.
10. surge absorber as claimed in claim 9 is characterized in that: described retaining member uses identical with described scolder, different with described bonding agent material to form.
11. surge absorber as claimed in claim 9 is characterized in that: described retaining member uses identical with described bonding agent, different with described scolder material to form.
12. surge absorber as claimed in claim 9 is characterized in that: described retaining member uses the material different with described bonding agent and described scolder to form.
13. as claim 6 or 7 described surge absorbers, it is characterized in that: the pressure of described sealing gas is negative pressure.
14. surge absorber as claimed in claim 1 is characterized in that, is provided with: on side face, make described discharging gap cut apart described conductive cell envelope and the column that forms or tabular described insulating component between the centre; The a pair of described terminal electrode relative at the two ends of described insulating component with described conductive cell envelope; And described insulating properties pipe,
Between described conductive cell envelope and described terminal electrode, be provided as the buffer component of the conductivity of described current-carrying part.
15. surge absorber as claimed in claim 14 is characterized in that: described buffer component is any one in metallic plate or metal forming, foaming metal, fibre metal or the scolder.
16. surge absorber as claimed in claim 14 is characterized in that: on described buffer component, the protrusion in order to the two ends outer peripheral face that keeps described insulating component is set.
17. the manufacture method of surge absorber as claimed in claim 14, it is characterized in that: between the end face of the described conductive cell envelope that is inserted into described insulating properties pipe inside and described terminal electrode, described buffer component is set, described terminal electrode is bonded in the two ends of described insulating properties pipe and seals described insulating properties pipe.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53988/2003 | 2003-02-28 | ||
| JP2003053988 | 2003-02-28 | ||
| JP397955/2003 | 2003-11-27 | ||
| JP431148/2003 | 2003-12-25 | ||
| JP4314/2004 | 2004-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1778025A true CN1778025A (en) | 2006-05-24 |
| CN100539338C CN100539338C (en) | 2009-09-09 |
Family
ID=36766701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800105525A Expired - Lifetime CN100539338C (en) | 2003-02-28 | 2004-02-27 | Surge absorber and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100539338C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611004A (en) * | 2011-12-27 | 2012-07-25 | 百圳君耀电子（深圳）有限公司 | Surge absorption tube and manufacturing method thereof |
| CN104576252A (en) * | 2013-10-16 | 2015-04-29 | 斯玛特电子公司 | Surface-adhering fuses and structures of surface-adhering fuses |
| CN113328423A (en) * | 2021-06-01 | 2021-08-31 | 曾怀勇 | Surge protector for high-voltage power |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015116278A1 (en) * | 2015-09-25 | 2017-03-30 | Epcos Ag | Overvoltage protection device and method for producing an overvoltage protection device |
| JP6853447B2 (en) * | 2016-04-26 | 2021-03-31 | 三菱マテリアル株式会社 | Surge protection element |
-
2004
- 2004-02-27 CN CNB2004800105525A patent/CN100539338C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611004A (en) * | 2011-12-27 | 2012-07-25 | 百圳君耀电子（深圳）有限公司 | Surge absorption tube and manufacturing method thereof |
| CN102611004B (en) * | 2011-12-27 | 2013-09-11 | 广东百圳君耀电子有限公司 | Surge absorption tube and manufacturing method thereof |
| CN104576252A (en) * | 2013-10-16 | 2015-04-29 | 斯玛特电子公司 | Surface-adhering fuses and structures of surface-adhering fuses |
| CN113328423A (en) * | 2021-06-01 | 2021-08-31 | 曾怀勇 | Surge protector for high-voltage power |
| CN113328423B (en) * | 2021-06-01 | 2022-11-08 | 国网湖北省电力有限公司超高压公司 | Surge protector for high-voltage power |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100539338C (en) | 2009-09-09 |
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