CN201936829U - Fuse drum for high-voltage fuse - Google Patents
Fuse drum for high-voltage fuse Download PDFInfo
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- CN201936829U CN201936829U CN2010206580934U CN201020658093U CN201936829U CN 201936829 U CN201936829 U CN 201936829U CN 2010206580934 U CN2010206580934 U CN 2010206580934U CN 201020658093 U CN201020658093 U CN 201020658093U CN 201936829 U CN201936829 U CN 201936829U
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Abstract
The utility model relates to a fuse drum for a high-voltage fuse, which is contained in a main cylindrical insulator. An upper fixing electrode is fixed to the upper end of the main insulator, and a lower fixing electrode is fixed to the lateral side of the lower portion of the main insulator. The fuse drum comprises an insulating drum, a lower contact, a display drum, a spring and a fuse. An upper tubular contact is fixed to the upper end of the insulating drum, the lower contact penetrating through the insulating drum is provided with an annular contact portion, the display drum is fixedly mounted at the lower end of the insulating drum, the spring is arranged between the lower contact and the display drum, and the fuse is filled in the insulating drum and arranged between the upper contact and the lower contact by stretching the spring. A capping component used for capping the lower portion of the main insulator is mounted on the lower contact. Capping on the lower portion of the main insulator can be operated easily when in loading and unloading operation such as on and off operation of load of distribution lines, exchange of the fuse drum or the like.
Description
Technical field
The utility model relates to a kind of fuse tube that uses in high-tension fuse.
Background technology
In the past, known promising protection power distribution transformer was provided with, was taking in the high-tension fuse of fuse tube in porcelain system main body insulator.Be provided with upper electrode and lower electrode in this high-tension fuse.The fuse tube is connected upper electrode with lower electrode.In the upper end of fuse tube, be provided with the insulating cylinder of having fixed the tubular upper contact.In insulating cylinder, run through that the bottom contact with ring-type contact site being installed.Lower end at insulating cylinder is fixed with display barrel.Between bottom contact and display barrel, be provided with the parts of energizing.In insulating cylinder, between top contact and bottom contact, be provided with fuse by the parts stretching of energizing.The electrical fuse element of fuse and fuse lead-in wire are cascaded.Front end at the fuse lead-in wire is provided with splicing ear.On the fixed part that is arranged on the contact of bottom, the binding terminal has been fixedly clamped.Lower end at the main body insulator is fixed with lower cover.Peristome in lower cover is equipped with airtight bolt, the lower end of this airtight bolt capping main body insulator, and in the operations such as exchange of load opening operation that carries out distribution line or fuse tube, can load and unload.Airtight bolt is tied by connecting line and lower cover, hangs downwards when lower cover is taken off.
Patent documentation 1: China Patent No. 200920161173.6
Patent documentation 2: China Patent No. 200920161174.0
When the load opening operation of the distribution line in carrying out high-tension fuse or the handling operations such as exchange of fuse tube, the operating personnel climbs up electric pole, with can be safe and easy mode of operation use hook stick.At this moment, airtight bolt is taken off from lower cover opening carry out handling operation under the bolt state in because airtight bolt is tied by connecting line and lower cover, so airtight bolt is hung downwards from lower cover.Then, after operation is over, when lower cover is installed, the protuberance of sealing bolt is inserted the inserting in the hole of front end of hook stick at the airtight bolt of the bolt state of opening that will hang from lower cover by connecting line downwards, hook stick is operated so that airtight bolt is mounted to lower cover.
Yet, hang downwards from lower cover by connecting line owing to open the airtight bolt of bolt state, so be in non-persistent state.So be not easy the protuberance of airtight bolt is inserted the front end of hook stick.Thereby expectation becomes easy with the operation of capping main body insulator bottom.
The utility model content
The utility model proposes at above-mentioned situation just, its purpose is for providing a kind of when the handling operations such as exchange of the load folding operation of carrying out distribution line or fuse tube, the high-tension fuse fuse tube that can easily carry out the capping operation of main body insulator bottom.
The utility model is a kind of high-tension fuse fuse tube, its structure is as follows: the inside that is housed in main body insulator cylindraceous, the upper end of described main body insulator is fixed with upper electrode, the lower side of described main body insulator is fixed with lower electrode, it is characterized in that, possess: insulating cylinder is fixed with the top contact of tubulose in the top; The bottom contact runs through being installed in the described insulating cylinder, and has the contact site of ring-type; Display barrel is packed in the lower end of described insulating cylinder; The parts of energizing are arranged between described bottom contact and the described display barrel; And fuse, be installed in the described insulating cylinder, and be arranged between described top contact and the described bottom contact by the described parts stretching of energizing, on the contact of described bottom, cover part is installed, this cover part is with the bottom capping of described main body insulator.
Use in the fuse tube at this high-tension fuse, described cover part is installed in contact bottom, described bottom.
This high-tension fuse with fuse tube in, possess the lead-in wire that will be connected with described fuse and be fixed on fixed part on the contact of described bottom, described cover part is installed in the top of described fixed part.
This high-tension fuse with fuse tube in, on described cover part, coffer is installed, this coffer is the enclose inside of described cover part, and breaks away from when described blown fuse.
Use in the fuse tube at this high-tension fuse, be provided with a pair of engaging teat in the outside, bottom of described cover part.
Based on the utility model, when the handling operations such as exchange of the load folding operation of carrying out distribution line or fuse tube, can easily carry out the capping operation of main body insulator bottom.
Description of drawings
Fig. 1 is the profile of high-tension fuse.
Fig. 2 is the profile of the bottom of high-tension fuse.
Fig. 3 shows the bottom of fuse tube and the stereogram of cover part.
Fig. 4 is the stereogram that shows bottom, cover part and the hook stick of fuse tube.
Fig. 5 is the profile of the bottom of high-tension fuse.
Fig. 6 is the profile of the bottom of high-tension fuse.
Fig. 7 is the stereogram that shows bottom, cover part and the hook stick of fuse tube.
Fig. 8 is the profile of the bottom of high-tension fuse.
Symbol description
The 1-high-tension fuse, 10-main body insulator, 11-upper chambers, the 12-bottom compartment, 13-upper end, 14-lower openings portion, 15-lower sides, 17-adhesive, the 18-pleat that insulate, 21-upper mould awl, 22-top installing component, 23-top fixed electrode, 24-upper electrode sheet, 29-nut, 31-lower die awl, the 31a-internal thread part, 32-connecting line, 33-bottom installing component, the 33a-holding section, 34-bottom fixed electrode, 35-arc extinguishing tube, the 36-fixed electrode, 37-lower electrode sheet, 38-electrode support plate, the 39-buffer unit, 40-fuse tube, 41-top contact, the 42-insulating cylinder, 43-arc extinguishing rod, 44-fuse, the 45-electrical fuse element, 46-fuse lead-in wire, 47-bottom contact, the 48-display barrel, 49-spring, 50-trip bolt, the 51-fixed part, 54-external thread part, 56-stationary fixture, the 58-lower cover, 60-cover part, 61-embedded hole, 62-tube portion, 63-inclined plane, 64-internal thread part, the 65-flange part, the 65a-inclined plane, 66-engages teat, the 67-projection, 68-coffer, 70-hook stick, the 71-barred body, the chimeric cartridge unit of 72-, 73-embedded hole, the chimeric tube of 74-portion, 75-steam vent, 76-circle ring part, 77-card and projection, 78-restrictions, 79-outer cylinder member.
Embodiment
(first execution mode)
As shown in Figure 1, the porcelain system main body insulator 10 of high-tension fuse 1 forms cylindric, is formed with a plurality of insulation pleats 18 on its outer peripheral face.The lower ending opening of main body insulator 10 forms lower ending opening portion 14.In the inside of main body insulator 10, be formed with columned upper chambers 11 and columned bottom compartment 12, bottom compartment 12 is communicated with the bottom of upper chambers 11, and its internal diameter enlarges greatlyyer than upper chambers 11.Central portion in the upper end 13 of main body insulator 10 is formed with the hole 13a that inserts logical top fixed electrode 23.
In the upper end 13 of main body insulator 10, top installing component 22 is inserted with the form of giving prominence to the outside of main body insulator 10 in the upper chambers 11 of main body insulator 10 and is led among the 13a of hole, and is fixed on the main body insulator 10 by nut 29.
The top fixed electrode 23 that is being spirally connected on top installing component 22, top fixed electrode 23 is fixed on the main body insulator 10 by top installing component 22.In the outer end of top fixed electrode 23, the internal thread part 21a of the cone shape upper mould awl 21 that is being spirally connected.Upper mould awl 21 is bonded on the upper end 13 of main body insulator 10 by adhesive.On the lead-out wire of upper mould awl 21, be connected with the external cable of distribution line.
Be formed with the hole 12a that runs through bottom compartment 12 walls on the lower sides 15 of main body insulator 10, the threaded portion 31a of coniform lower die awl 31 leads among the 12a of hole to insert to the outstanding form of bottom compartment 12 inner faces from main body insulator 10.The stationary fixture 36 that is being spirally connected on the threaded portion 31a of lower die awl 31, lower die awl 31 are fixed on the main body insulator 10 by stationary fixture 36.
Upper chambers 11 at main body insulator 10 is equipped with arc extinguishing tube 35, and this fire arc tube 35 is positioned at the below of top fixed electrode 23, covers the medial surface of upper chambers 11, and is the cylindric of both ends open, is made of arc quenching materials such as polyacetals.
Contain bottom fixed electrode 34 and form roughly discoideus buffer unit 39 in the bottom compartment 12 of main body insulator 10, bottom fixed electrode 34 is connected on the threaded portion 31a of lower die awl 31 by connecting line 32.Bottom fixed electrode 34 is made of the electrode support plate 38 of bottom cylindraceous installing component 33 and a pair of lower electrode sheet 37 and ring-type, and bottom installing component 33 has the inserting hole of inserting logical fuse tube 40 usefulness.
As shown in Figure 2, be fixed with splicing ear 32a at the front end of connecting line 32, splicing ear 32a is connected on the electrode support plate 38 by screw 38a.Thus, lower die awl 31 is electrically connected on bottom fixed electrode 34 by threaded portion 31a, connecting line 32, splicing ear 32a, screw 38a, electrode support plate 38.
Be provided with holding section 33a in the bottom of bottom installing component 33, this holding section 33a is fastened among the slot 12b of the inner peripheral surface that is formed at bottom compartment 12, comes off from main body insulator 10 to prevent bottom installing component 33.Buffer unit 39 is fixed by the upper surface of the upside of bottom fixed electrode 34 and bottom compartment 12.Butt has arc extinguishing tube 35 on the top of buffer unit 39.
In the lower ending opening portion 14 of bottom compartment 12, installing the lower cover 58 of capping lower ending opening portion 14.Lower cover 58 forms roughly cylindric, and its outer peripheral face is made of minor diameter part 58a and large-diameter portion 58b, at two ones the boudary portion section of being formed with difference face 58c.On the outer peripheral face of minor diameter part 58a, be formed with tongue and groove 58e.Form inclined plane 58f on the inner peripheral surface of the large-diameter portion 58b of lower cover 58, the internal diameter of this inclined plane 58f is big more more downwards.
With lower cover 58 when the lower ending opening portion 14 of main body insulator 10 installs, on the inwall 14a of lower ending opening portion 14, smear adhesive 17.Then, the section difference face 58c of lower cover 58 and the lower surface butt of main body insulator 10, the gap of the outer peripheral face of the inwall 14a of lower ending opening portion 14 and the minor diameter part 58a of lower cover 58 is filled by the adhesive 17 of scheduled volume.Thus, lower cover 58 is packed in the lower ending opening portion 14 of main body insulator 10 by the jog on the inwall 14a that is formed on lower ending opening portion 14, tongue and groove 58e and adhesive 17.
As shown in Figure 1, in the inside of main body insulator 10, contain the fuse tube 40 that connects top fixed electrode 23 and bottom fixed electrode 34 with the form that runs through arc extinguishing tube 35.
In the upper end of fuse tube 40, be provided with the cylindric top contact 41 of interlocking on top fixed electrode 23.Top contact 41 can contact with the upper electrode sheet 24 of the shape of falling U.On top fixed electrode 23, be equipped with the arc extinguishing rod of making by arc quenching materials such as polyacetals 43, this arc extinguishing rod 43 is between upper electrode sheet 24.
Be provided with columned insulating cylinder 42 in the bottom of top contact 41.Between the bottom of the upper end of insulating cylinder 42 and top contact 41, be fixed with stationary fixture 56.In the inside of insulating cylinder 42, be provided with fuse 44 with the state assembling of electrical fuse element 45 and 46 series connection of fuse lead-in wire.At the front end of fuse 44, be provided with and form discoideus portion of terminal 44a.After fuse 44 was inserted into the inside of stationary fixture 56, top contact 41 was screwed onto the top of stationary fixture 56, the portion of terminal 44a of fuse 44 be fixed anchor clamps 56 and 41 clampings of top contact, and formation is electrically connected.Thus, the top contact 41 of fuse tube 40 and bottom contact 47 form and are electrically connected via the portion of terminal 44a of fuse 44, electrical fuse element 45, fuse lead-in wire 46.Electrical fuse element 45 fuses when one has the electric current of overrate to flow through at once.
On insulating cylinder 42, the cylindric bottom contact of rabbeting with bottom fixed electrode 34 47 along the form trip embedding that axis direction moves.
As shown in Figure 3, on the outer peripheral face of bottom contact 47, be provided with fixed part 51, the be fixedly clamped splicing ear 46a of fuse lead-in wire 46 of this fixed part 51.Splicing ear 46a is fixed on the fixed part 51 by trip bolt 50.
On bottom contact 47, be formed with the groove 55 of taking in fuse lead-in wire 46, this groove 55 axially prolongs the bottom that to fixed part 51 from the bottom of bottom contact 47.That is to say that groove 55 prolongs and formation along the outgoing direction that prolongs of the central shaft of bottom contact 47.
In that the splicing ear 46a of fuse lead-in wire 46 is clamped when being fixed on the fixed part 51, the part of fuse lead-in wire 46 is housed in the groove 55, and fuse lead-in wire 46 is suppressed from the outstanding amounts of bottom contact 47 peripheries.And, mobile being restricted of fuse lead-in wire 46.
On the lower, outer perimeter face of bottom contact 47, be formed with flange part 53.On the outer peripheral face of the lower end of bottom contact 47, be formed with external thread part 54.External thread part 54 is positioned at the bottom of flange part 53.Cover part 60 is being spirally connected on external screw thread 54.Cover part 60 possesses tube cylindraceous portion 62, is formed with embedded hole 61 at the inner face of tube portion 62.
Be formed with inclined plane 63 on the outer peripheral face of the upper end of tube portion 62, the diameter on this inclined plane 63 is more little to the upper end more.On the inner peripheral surface of the upper end of tube portion 62, be formed with internal thread part 64.On internal thread part 64, screw togather the external thread part 54 of bottom contact 47.
As shown in Figure 2, between the inner peripheral surface of the minor diameter part 58a of the outer peripheral face of cover part 60 and lower cover 58, be provided with a little gap.Full week of outer peripheral face at cover part 60 is formed with flange part 65.Be formed with the inclined plane 65a that diameter is big more more downwards at flange part 65 upper surfaces.Because inclined plane 65a forms the angle identical with the peristome 58f of lower cover 58, so inclined plane 65 can be at its butt of the full Zhou Shangyu of peristome 58d.Flange part 65 engages with a plurality of flat springs 59 on being fixed on lower cover 58.By such engaging, cover part 60 is the bottom capping of main body insulator 10, and fuse tube 40 remained on the inside of main body insulator 10.
On the outer peripheral face of the bottom of cover part 60, to be formed with a pair of engaging teat 66 towards radially prolonging the form that.Cover part 60 is by tube cylindraceous portion 62, internal thread part 64 and flange part 65, the bottom of flange part 65 capping main body insulators 10.When being installed to cover part 60 on the fuse tube 40, the internal thread part 64 of cover part 60 is screwed on the external thread part 54 of bottom contact 47, the upper end of cover part 60 and flange part 53 butts.
Full week of inner peripheral surface at cover part 60 is formed with projection 67.Engaging has coffer 68 on projection 67.Full week of peripheral end at coffer 68 is formed with engaging recessed part 68a.Chimeric the engaging recessed part 68a of coffer 68 on projection 67.Coffer 68 is with the enclose inside of cover part 60.
Screwed togather display barrel 48 in the bottom of insulating cylinder 42.Between bottom contact 47 and display barrel 48, the spring 49 as the parts of energizing is housed, this spring 49 pushes away insulating cylinder 42 to the outside of main body insulator 10 bullet all the time.Fuse lead-in wire 46 turns back upward from the lower end of display barrel 48, simultaneously splicing ear 46a is hung at compression spring 49 under the state on the trip bolt 50 of bottom contact 47, by trip bolt 50 clamped being fixed on the fixed part 51.That is to say that under this state, fuse lead-in wire 46 remains in the tensioning state.
As shown in Figure 1, in insulating cylinder 42, be formed with minor diameter part 42a and the diameter large-diameter portion 42b bigger that bottom contact 47 is supported with form moving up and down than minor diameter part 42a.Stage portion between minor diameter part 42a and the large-diameter portion 42b has constituted restrictions 42c, and this restrictions 42c restriction insulating cylinder 42 moves downwards with respect to bottom contact 47.
Under fuse tube 40 was inserted into state in the main body insulator 10, when top contact 41 contacted with the form that can switch on top fixed electrode 23, bottom contact 47 contacted with the form that can switch on bottom fixed electrode 34.That is to say that under fuse tube 40 was housed in state in the main body insulator 10, top fixed electrode 23 and bottom fixed electrode 34 were electrically connected by fuse tube 40.
Below, the action of the high-tension fuse 1 of formation is in the above described manner described.
One has super-high-current to flow through in the high-tension fuse 1, the just fusing at once of the electrical fuse element 45 of fuse 44.At this moment, the tensioning state of fuse lead-in wire 46 is disengaged, and fuse tube 40 is forced to move to the restrictions 42c of fuse tube 40 and the position of bottom contact 47 engagings downwards based on the elastic force of spring 49.When top contact 41 broke away from from top fixed electrode 23, display barrel 48 was outstanding to the below of main body insulator 10.
By the pushing of moving the display barrel 48 that produces by electrical fuse element 45 bulbs of pressure that moment produces when fusing or fuse tube 40 pressure downwards, the coffer 68 of cover part 60 breaks away from from cover part 60.So the information that the electrical fuse element 45 of high-tension fuse 1 has fused is apprised of to the outside.The operating personnel can be by the information that has super-high-current to flow through to the outstanding display barrel 48 usefulness visual confirmations in the below of main body insulator 10.
As shown in Figure 4, the front end at the barred body 71 of hook stick 70 is fixed with chimeric cartridge unit 72.This chimeric cartridge unit 72 possesses chimeric tube portion 74, and this chimeric tube portion 74 is provided with the connecting hole 73 that extends vertically.The length of hook stick 70 suitably is set at the length that arrives high-tension fuse 1 from electric pole.On the base end part side of chimeric tube portion 74, be formed with the steam vent 75 that is communicated with connecting hole 73.
On chimeric cartridge unit 72, be formed with embedded hole 73.On the inner peripheral surface of gomphosis part 72, chimeric circle ring part 76.On the inner peripheral surface of circle ring part 76, be formed with a pair of L of being font and mutual opposed engaging protrusion 77.Be positioned at this on the engaging protrusion 77 and the rotation of prolonging the restrictions 78 restriction engaging teats 66,66 that along the longitudinal direction of L word.In circle ring part 76 and chimeric tube portion 74, the outer cylinder member 79 that covers its outer peripheral face by screw.
When taking off fuse tube 40 when in construction etc., distribution line being loaded opening operation or owing to reasons such as exchanges, will be installed in the embedded hole 73 of chimeric cartridge unit 72 that cover part 60 on the interior fuse tube 40 of high-tension fuse 1 is inserted into hook stick 70.Then, the front end of chimeric cartridge unit 72 is connected on the flange part 65 of cover part 60.At this moment, engaging teat 66 and engaging protrusion 77 are in the position that does not engage mutually.
Then, by the barred body 71 of rotating operation rod 70, a pair of engaging teat 66 is fastened on the engaging protrusion 77.Then, engaging teat 66 is turned to always restrictions 78 butts with engaging protrusion 77.Under this butt state, if drop hook stick 70 downwards, the engaging of the flange part 65 of cover part 60 and the flat spring 57 of lower cover 58 will be disengaged, so fuse tube 40 and cover part 60 can be pulled out from high-tension fuse 1.
When fuse tube 40 is installed on high-tension fuse 1, in advance cover part 60 is installed on the fuse tube 40.That is to say, the external thread part 54 of bottom contact 47 and the internal thread part 64 of cover part 60 are screwed togather.Then, the lower portion of cover part 60 is inserted in the embedded hole 73 of chimeric cartridge unit 72 of hook stick 70, the card and the teat 66 of cover part 60 engaged with engaging protrusion 77, make it and to extract.Under such fastening state, fuse tube 40 and cover part 60 are inserted to inside from the lower end of high-tension fuse 1 from front end with hook stick 70.
Afterwards, to counter-rotation, the end of engaging teat 66 and the restrictions 78 of engaging protrusion 77 are connected hook stick 70.Remove the engaging of the engaging protrusion 77 of the engaging teat 66 of cover part 60 and hook stick 70,, only hook stick 70 is unloaded keeping under the constant situation of the state that fuse tube 40 and cover part 60 is installed on the high-tension fuse 1.
Based on the execution mode of above explanation, can obtain following action effect.
(1) cover part 60 has been installed on bottom contact 47.Thus, when the bottom of capping main body insulator 10, the operating personnel is installed on the main body insulator 10 after being installed in cover part 60 on the hook stick 70 again.And, be installed on the hook stick 70 and be installed to again in the main body insulator 10 being installed in cover part 60 on the bottom contact 47.Thus, fuse tube 40 and cover part 60 can be installed on the main body insulator 10 simultaneously.So, no longer need airtight bolt, can easily carry out the capping operation of the bottom of main body insulator 10.And, capped parts 60 cappings in the bottom of main body insulator 10, so thereby electro-mechanical part can not expose the safety that becomes, also can prevent the stained of main body insulator inside simultaneously.
(2) in the bottom of bottom contact 47 cover part 60 has been installed.That is to say, on the periphery of the lower end of bottom contact 47, form in the external thread part 54, on the inner peripheral surface of the upper end of cover part 60, form internal thread part 64, cover part 60 is screwed on the bottom contact 47.Therefore, can easily cover part 60 be installed on the bottom contact 47.And be provided with flange part 53, when being screwed on cover part 60 on the bottom contact 47, the front end butt of this flange part 53 and cover part 60.Therefore, cover part 60 correctly can be installed on the bottom contact 47.
(3) at the inner face of cover part 60 coffer 68 has been installed.Therefore, can be with the enclose inside of cover part 60.And according to the pushing of the display barrel 48 of the bulbs of pressure that moment take place when electrical fuse element 45 fusing or fuse tube 40, coffer 68 can break away from.Therefore, can prevent that cover part 60 from coming off from the inside of main body insulator 10.
(4) on the outer peripheral face of the upper end of cover part 60, formed inclined plane 63.Therefore, engage with hook stick 70 at the cover part 60 that will be fastened on the fuse tube 40, and with hook stick 70 with its from the lower end of high-tension fuse 1 when insert inside, it is tilted face 63 guiding.So, can be easily fuse tube 40 and cover part 60 be inserted into central authorities in the lower cover 58.
(5) on the outer peripheral face of the bottom of cover part 60, be provided with a pair of engaging teat 66.Therefore, hook stick 70 easily can be installed on the cover part 60.So, handling operation in the time of can easily carrying out the exchange of load folding operation, fuse tube of distribution line etc.
(6) cover part 60 possesses tube cylindraceous portion 62, is installed in the contact installation portion of bottom contact and the flange part 65 of capping main body insulator 10 bottoms.Therefore, can easily form cover part 60.
(7) formed flange part 65 in the full week of outer peripheral face of cover part 60, and possessed inclined plane 65a at the upper surface of flange part 65.Therefore, after with the inclined plane 65a of flange part 65 a plurality of flat springs 59 of lower cover 58 being expanded, flange part 65 is stuck.So, can easily cover part 60 be remained on the inside of main body insulator 10.
(8) angle of inclination of the inclined plane 65a of the flange part 65 of cover part 60 is formed the identical angle of inclined plane 58f with the inner peripheral surface of the large-diameter portion 58b of lower cover 58.Therefore, cover part 60 connects with lower cover 58, can be positively with the bottom capping of main body insulator 10.
(9) be fitted on the projection 67 of cover part 60 inboards by engaging recessed part 68a, coffer 68 is installed on the cover part 60 coffer 68.Therefore, can easily coffer 68 be engaged on the cover part 60.
(second execution mode)
High-tension fuse in present embodiment is used in the fuse tube, and the lock structure of the interior shape of cover part 60 and cover part 60 and coffer 68 is different with the first above-mentioned execution mode.Below, be that the center describes with the part different with first execution mode.
As shown in Figure 5, the cover part 60 that is being spirally connected on the external thread part 54 of bottom contact 47.Cover part 60 possesses tube cylindraceous portion 62.On the outer peripheral face of the upper end of cover part 60, be formed with inclined plane 63.On the inner peripheral surface of the upper end of cover part 60, be formed with internal thread part 64.The inner peripheral surface of cover part 60 is formed by minor diameter part 62a and large-diameter portion 62b, is formed with slot 62c on the boudary portion of two footpath portions.Engaging the coffer 68 of circular plate type on slot 62c, coffer 68 is with the enclose inside of cover part 60.
Based on the execution mode of above explanation, except the effect of (1)-(8) of first execution mode, can also obtain following effect.
(10) on the inner peripheral surface of cover part 60, form minor diameter part 62a and large-diameter portion 62b, and on the boudary portion of these footpath portions, formed slot 62c.Then, the coffer 68 with circular plate type is fastened on the slot 62c.That is to say, when cover part 60 is installed, coffer 68 is inserted from the lower end side of large-diameter portion 62b, can easily pick out the installation site of coffer 68 by the section difference of minor diameter part 62a and large-diameter portion 62b.In addition, because in this section difference, in other words have slot 62c, so can easily coffer 68 be fastened on the cover part 60 at boundary.
(the 3rd execution mode)
The high-tension fuse of present embodiment is different with first execution mode on following point with the fuse tube, that is: the lock structure of the lock structure of bottom contact 47 and cover part 60, cover part 60 and coffer 68 and formed jut 69 on cover part 60.Below, be that the center describes with the part different with first execution mode.
As Figure 6 and Figure 7, on the side face of the bottom of bottom contact 47, be formed with flange part 53.On the periphery of the lower end of bottom contact 47, be formed with the opposite prominent engaging teat 54a that establishes of direction of a subtend 180 degree, 54b.That is to say, engaging teat 54a, 54b is respectively formed on the symmetric position of the central shaft of bottom contact 47.The card of face side and teat 54a be positioned at groove 55 near.The engaging teat 54b of rear side forms in the week of bottom contact 47 and makes progress than card and the bigger form of teat 54a.At card and teat 54a, engaging the upper end of cover part 60 on the 54b.
On cover part 60, be formed with embedded hole 61.On the inner peripheral surface of cover part 60, be formed with a pair of L of being font and mutual opposed engaging protrusion 61a.Being positioned at this goes up engaging protrusion 61a and prolongs the restrictions 61b restriction engaging teat 54a that, the rotation of 54b along the longitudinal direction of L word.Cover part 60 is by a pair of engaging protrusion 61a and card and teat 54a, and 54b is engaged and installed on the bottom contact 47.
Between the inner peripheral surface of the minor diameter part 58a of the outer peripheral face of cover part 60 and lower cover 58, be provided with a little gap.Be formed with flange part 65 full week at the outer peripheral face of cover part 60.On the outer peripheral face of the lower end of cover part 60, radially prolong the form that and be formed with a pair of engaging teat 66 that engages with hook stick 70 with court.Forming in full week of the part of jut 69 between flange part 65 and engaging teat 66.
As shown in Figure 6, on the inner peripheral surface of cover part 60, be formed with slot 62d.Coffer 68 is installed on this slot 62d.Coffer 68 is with the enclose inside of cover part 60.
Based on the execution mode of above explanation, except the effect of (1), (3)-(8) of first execution mode, can also obtain following effect.
(11) in the bottom of bottom contact 47 cover part 60 has been installed.That is to say, on the outer peripheral face of bottom contact 47, form engaging teat 54, in the time of 54b, form a pair of engaging protrusion 61a on the top of cover part 60.Then, by a pair of engaging protrusion 61a and card and teat 54a, the engaging of 54b is installed to cover part 60 on the bottom contact 47.Therefore, the installation of bottom contact 47 and cover part 60 can be become easy.And cover part 60 is limited with respect to the rotation of bottom contact 47 and is fixed, so can bottom contact 47 and cover part 60 is integrated.
(12) on the inner peripheral surface of cover part 60, formed slot 62d, and coffer 68 has been installed on the slot 62d.Therefore, can easily coffer 68 be fastened on the cover part 60.
(13) be connected on the jut 69 of cover part 60 by front end,, make hook stick 70 and cover part 60 engage afterwards with hook stick 70 rotations with hook stick 70.Therefore, can correctly hook stick 70 be installed on the cover part 60.
(the 4th execution mode)
The high-tension fuse of present embodiment is different with the 3rd execution mode on following point with the fuse tube, that is: the clamped position of bottom contact 47 and cover part 60 be positioned at the fixed part 51 of bottom contact 47 the top, omitted main body insulator 10 lower cover 58, omitted the flange part 65 that engages with the lower cover 58 of cover part 60.Below, be that the center describes with the part different with the 3rd execution mode.
As shown in Figure 8, on the outer peripheral face of the pars intermedia of bottom contact 47, be formed with flange part 53.Below flange part 53, be formed with the opposite prominent engaging teat 54a that establishes of direction of a subtend 180 degree, 54b.That is to say, engaging teat 54a, 54b is respectively formed on the symmetric position of the central shaft of bottom contact 47.The card of face side and teat 54a are positioned near the top of fixed part 51.That is to say that the fixed part 51 that is located on the bottom contact 47 of fuse tube 40 is arranged on flange part 53 and card and teat 54a, the below of 54b.So fixed part 51 is positioned at the inside of the cover part 60 that is installed on the fuse tube 40.The engaging teat 54b of rear side forms in the week of bottom contact 47 and makes progress than card and the bigger form of teat 54a.At card and teat 54a, engaging the upper end of cover part 60 on the 54b.
Full week of outer peripheral face be formed with flange part 65 in the tube portion of cover part 60.Upper surface at flange part 65 is formed with inclined plane 65a.On flange part 65, be formed with the relative relative 65b of portion of inwall with the bottom compartment 12 of main body insulator 10.Between the inwall 14a of the bottom compartment 12 of the relative 65b of portion of flange part 65 and main body insulator 10, a little gap is set.On the outer peripheral face of the bottom of cover part 60, be formed with a pair of court and radially prolong the card and the teat 66 that.
Based on the execution mode of above explanation,, outside (11) of the 3rd execution mode, the effect of (12), can also obtain following effect except (1), (3)-(5) of first execution mode.
(14) fixed part 51 with bottom contact 47 is arranged on flange part 53 and card and teat 54a, the below of 54b.That is to say, cover part 60 is installed in the top of fixed part 51.Therefore, the clamped position of cover part 60 is positioned at the top of fixed part 51 of the fuse lead-in wire 46 of bottom contact 47.And, will fuse lead-in wire 46 pass the flange part 53 of bottom contact 47.So, prevent the damage of fuse lead-in wire 46, and can not make the shape of bottom contact 47 become complicated.
(15) full week of outer peripheral face formed flange part 65 in the tube portion of cover part 60.And, between the inner peripheral surface of the inwall 14a of the bottom compartment 12 of the relative 65b of portion of flange part 65 and main body insulator 10, a little gap is set.Therefore, can omit the lower cover 58 of the bottom that is packed in main body insulator 10.So, thereby can make electro-mechanical part can not expose the safety that becomes by simple formation, also can prevent inside stained of main body insulator 10 simultaneously.
(16) by utilizing cover part 60 to omit the lower cover 58 of the bottom of main body covered insulator 10, so do not need the bonding process of lower cover 58 and the jog of main body insulator 10.
(17) upper surface at flange part 65 has formed inclined plane 65a.Therefore, engage with hook stick 70 at the cover part 60 that will be fastened on the fuse tube 40, and with hook stick 70 with its from the lower end of high-tension fuse 1 when insert inside, it is tilted face 65a guiding.So, can be easily fuse tube 40 and cover part 60 be inserted into the central authorities of the bottom compartment 12 of main body insulator 10.
Implement and also can suitably change by following form above-mentioned form of implementation.
Though cover part 60 and coffer 68 constitute independently, also coffer 68 usefulness connecting lines etc. can be connected with cover part 60.Thus, when coffer 68 can be hung downwards when cover part 60 breaks away from, so can prevent loss.
Full week of outer peripheral face has formed jut 69 below cover part 60 in the 3rd execution mode, but also can omit jut 69.
Claims (5)
1. high-tension fuse fuse tube is housed in the inside of main body insulator cylindraceous, is fixed with upper electrode in the upper end of described main body insulator, is fixed with lower electrode in the lower side of described main body insulator,
It is characterized in that possessing:
Insulating cylinder is fixed with the top contact of tubulose in the top;
The bottom contact runs through being installed in the described insulating cylinder, and has the contact site of ring-type;
Display barrel is packed in the lower end of described insulating cylinder;
The parts of energizing are arranged between described bottom contact and the described display barrel; With
Fuse is installed in the described insulating cylinder, and is arranged between described top contact and the described bottom contact by the described parts stretching of energizing,
On the contact of described bottom cover part is installed, this cover part is with the bottom capping of described main body insulator.
2. high-tension fuse fuse tube according to claim 1 is characterized in that,
Described cover part is installed in contact bottom, described bottom.
3. high-tension fuse fuse tube according to claim 1 is characterized in that,
Possess the fixed part that will be fixed on the lead-in wire that described fuse is connected on the contact of described bottom,
Described cover part is installed in the top of described fixed part.
4. according to any described high-tension fuse fuse tube among the claim 1-3, it is characterized in that,
On described cover part coffer is installed, this coffer is the enclose inside of described cover part, and breaks away from when described blown fuse.
5. high-tension fuse fuse tube according to claim 4 is characterized in that,
Outside, bottom at described cover part is provided with a pair of engaging teat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206580934U CN201936829U (en) | 2010-11-26 | 2010-11-26 | Fuse drum for high-voltage fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206580934U CN201936829U (en) | 2010-11-26 | 2010-11-26 | Fuse drum for high-voltage fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936829U true CN201936829U (en) | 2011-08-17 |
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ID=44448344
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206580934U Expired - Fee Related CN201936829U (en) | 2010-11-26 | 2010-11-26 | Fuse drum for high-voltage fuse |
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| Country | Link |
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| CN (1) | CN201936829U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928273A (en) * | 2014-05-04 | 2014-07-16 | 马云涌 | Insulation closed type intelligent fuse |
| CN104103468A (en) * | 2014-07-03 | 2014-10-15 | 江苏省电力公司洪泽县供电公司 | Line connector provided with spring arc extinguishing device |
| CN111952134A (en) * | 2020-07-28 | 2020-11-17 | 湖南特诚成套电器有限公司 | Self-alarming injection type high-voltage fuse |
-
2010
- 2010-11-26 CN CN2010206580934U patent/CN201936829U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928273A (en) * | 2014-05-04 | 2014-07-16 | 马云涌 | Insulation closed type intelligent fuse |
| CN104103468A (en) * | 2014-07-03 | 2014-10-15 | 江苏省电力公司洪泽县供电公司 | Line connector provided with spring arc extinguishing device |
| CN111952134A (en) * | 2020-07-28 | 2020-11-17 | 湖南特诚成套电器有限公司 | Self-alarming injection type high-voltage fuse |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20151126 |