CN212750788U - High-voltage fuse - Google Patents
High-voltage fuse Download PDFInfo
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- CN212750788U CN212750788U CN202021606250.7U CN202021606250U CN212750788U CN 212750788 U CN212750788 U CN 212750788U CN 202021606250 U CN202021606250 U CN 202021606250U CN 212750788 U CN212750788 U CN 212750788U
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- sealing cover
- ceramic sleeve
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- ceramic
- jack
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Abstract
The utility model discloses a high-voltage fuse, which comprises a mounting seat and a fuse wire arranged in a ceramic sleeve, wherein the fuse wire is sealed between an upper sealing cover and a lower sealing cover of the ceramic sleeve, a lead connecting sheet is fixed at the top of the upper sealing cover, the lower end of the fuse wire penetrates out of the lower sealing cover, inert gas is filled in the ceramic sleeve between the upper sealing cover and the lower sealing cover after vacuum pumping, the bottom of the ceramic sleeve is provided with a hollow round table, the tail end of the fuse wire is positioned in the round table, one side of the upper end of the ceramic sleeve is also provided with a limiting groove, a jack corresponding to the shape of the ceramic sleeve is arranged on the mounting seat, a limiting mechanism is arranged in the jack, an equipment plate is also fixed at the bottom of the mounting seat, a wiring seat is fixed on the equipment plate, the bottom of the wiring seat is connected with the lead, a contact is fixed at the top of the wiring seat, the contact is inserted into the jack from the lower side, the utility model discloses safe and reliable, the installation is dismantled simple and conveniently.
Description
Technical Field
The utility model relates to a high-voltage fuse.
Background
The patent with publication number CN210156339U discloses a high-voltage fuse convenient for replacing a fuse wire, which is designed by an outer seat and an inner seat which can be separated, so as to take out the inner seat as a whole for replacing the fuse wire.
The high-voltage fuse with the structure has the following defects that the inner seat and the outer seat are mainly fixed in a magnetic attraction mode, and the fixing mode is not reliable enough; the sealing performance is poor, and the possibility of electric leakage exists; the push plates on the two sides of the outer seat need to be pressed simultaneously during separation, and the separation is not convenient enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of above-mentioned prior art, provide a high-voltage fuse.
The technical scheme of the utility model is that: a high-voltage fuse comprises a mounting seat and a fuse wire arranged in a ceramic sleeve, wherein an upper sealing cover is arranged at the top of the ceramic sleeve, a lead connecting sheet is fixed at the top of the upper sealing cover, the upper end of the fuse wire is fixed in the upper sealing cover and is connected with the lead connecting sheet, a limiting part is arranged at the lower end in the ceramic sleeve, a lower sealing cover is screwed on the limiting part, the lower end of the fuse wire is fixed on the lower sealing cover and penetrates out of the lower sealing cover, inert gas is filled into the ceramic sleeve between the upper sealing cover and the lower sealing cover after the ceramic sleeve is vacuumized, a hollow round table is arranged at the bottom of the ceramic sleeve, the tail end of the fuse wire is positioned in the round table, a limiting groove is further arranged on one side of the upper end of the ceramic sleeve, a jack corresponding to the shape of the ceramic sleeve is arranged on the mounting seat, an equipment plate is further fixed at the bottom of the mounting seat, the bottom of the wire holder is connected with a wire, a contact is fixed at the top of the wire holder, the contact is inserted into the jack from the lower part, a limiting mechanism is arranged in the jack, the ceramic sleeve is inserted into the jack, and the contact is abutted against the tail end of the fuse wire.
Furthermore, the upper sealing cover is also provided with a hole for vacuumizing or flushing inert gas, and the top of the hole is provided with a cover cap.
Specifically, the ceramic sleeve is a square sleeve, and the bottom of the circular truncated cone is in arc transition.
Furthermore, the top of the contact is in a circular truncated cone shape.
Furthermore, stop gear includes the spacing piece of telescopic connection in the jack, have the recess corresponding with spacing piece in the jack, the both sides of spacing piece respectively are connected with a connecting rod, two the outer end of connecting rod is worn out the corresponding passageway on the mount pad respectively, two be fixed with a clamp plate between the outer end of connecting rod, still overlap respectively on the two connecting rods between clamp plate and the mount pad and put a spring.
Furthermore, the cross section of one end of the limiting sheet, which faces the ceramic sleeve, is arc-shaped.
Furthermore, the top of the upper sealing cover is also provided with a handle, the top of the lead connecting sheet penetrates out of the handle, the handle is a frustum-shaped handle with a concave ring in the middle, and the top of the handle is abutted against the mounting seat after the ceramic sleeve is inserted into the jack.
Furthermore, the handle is also provided with a positioning salient point.
Furthermore, a circle of damping ring is fixed at the lower end of the jack, and damping fins are bonded at the corresponding positions of the lower end of the ceramic sleeve.
The utility model has the advantages that: the utility model discloses a ceramic cover is firm reliable with the fixed mode of mount pad, and the whole seal of fuse is in the ceramic cover, and difficult electric leakage or production electric spark operate only need one, and installation and dismantlement are convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a cross-sectional view of the ceramic sheath of the present invention;
fig. 4 is a schematic structural view of the joint of the ceramic sheath and the spacing piece of the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Referring to fig. 1-4, a high voltage fuse includes a mounting base 1 and a fuse wire 3 disposed in a ceramic sheath 2;
the top of the ceramic sleeve 2 is provided with an upper sealing cover 4, the top of the upper sealing cover 4 is fixed with a lead connecting sheet 5, the upper end of the fusible link 3 is fixed in the upper sealing cover 4 and is connected with the lead connecting sheet 5, the lower end in the ceramic sleeve 2 is provided with a limiting part 6, the limiting part 6 is screwed with a lower sealing cover 7, and the lower end of the fusible link 3 is fixed on the lower sealing cover 7 and penetrates out of the lower sealing cover 7;
the ceramic sleeve 2 between the upper sealing cover 4 and the lower sealing cover 7 is vacuumized and then filled with inert gas to improve the reliability of the ceramic sleeve 2, the upper sealing cover 4 is also provided with a hole for vacuumizing or injecting the inert gas, and the top of the hole is provided with a cap;
specifically, the ceramic sleeve 2 is a square sleeve, a hollow circular truncated cone 8 is arranged at the bottom of the ceramic sleeve 2, the bottom of the circular truncated cone 8 is in arc transition, the tail end of the fuse wire 3 is positioned in the circular truncated cone 8, and a limiting groove 9 is further formed in one side of the upper end of the ceramic sleeve 2;
the mounting seat 1 is provided with an insertion hole 10 corresponding to the shape of the ceramic sleeve 2, the bottom of the mounting seat 1 is also fixed with an equipment plate 11, the equipment plate 11 is fixed with a wire holder 12, the bottom of the wire holder 12 is connected with a wire, the top of the wire holder 12 is fixed with a contact 13, and the contact 13 is inserted into the insertion hole 10 from the lower part;
it should be noted that the top of the contact 13 is truncated cone-shaped, so as to be easily matched and inserted into the bottom of the ceramic sleeve 2;
a limiting piece 14 is connected in the insertion hole 10 in a telescopic manner, the limiting piece 14 is arranged on a groove 15 in the insertion hole 10, two sides of the limiting piece 14 are respectively connected with a connecting rod 16, the outer ends of the two connecting rods 16 respectively penetrate through corresponding channels on the installation seat 1, a pressing plate 17 is fixed between the outer ends of the two connecting rods 16, and a spring 18 is sleeved on each of the two connecting rods 16 between the pressing plate 17 and the installation seat 1;
the ceramic sleeve 2 is inserted into the insertion hole 10, the contact 13 is abutted against the tail end of the fuse wire 3, the section of one end, facing the ceramic sleeve 2, of the limiting sheet 14 is arc-shaped, when the ceramic sleeve 2 is inserted, the limiting sheet 14 is squeezed open by the outer wall of the ceramic sleeve 2, so that the ceramic sleeve 2 can be inserted smoothly, and after the ceramic sleeve 2 is completely inserted, the limiting sheet 14 is popped out and abutted against the limiting groove 9 to limit the ceramic sleeve 2; when the ceramic sleeve 2 needs to be pulled out, the pressing plate 17 is pressed, so that the limiting plate is reset into the groove 15, the limiting on the ceramic sleeve 2 is released, and the ceramic can be pulled out smoothly;
in order to facilitate the plugging and unplugging of the ceramic sleeve 2, the top of the upper sealing cover 4 is also provided with a handle 19, the top of the lead connecting sheet 5 penetrates out of the handle 19, the handle 19 is a frustum-shaped handle 19 with a concave ring 20 in the middle, and after the ceramic sleeve 2 is plugged into the jack 10, the top of the handle 19 is abutted against the mounting seat 1, so that the dustproof sealing effect can be achieved;
the handle 19 is also provided with a positioning salient point 21 so that an operator can conveniently identify the surface of the ceramic sleeve 2 with the limiting groove 9 and ensure that the surface of the ceramic sleeve 2 with the limiting groove 9 faces the limiting sheet 14 when the ceramic sleeve is inserted, so that the limiting sheet 14 can be smoothly clamped into the limiting groove 9;
in order to improve the reliability of the ceramic sleeve 2 after insertion, a circle of damping ring 22 is further fixed at the lower end of the insertion hole 10, and a damping sheet 23 is bonded at a position corresponding to the lower end of the ceramic sleeve 2, so that the ceramic sleeve 2 is further not easy to displace.
When the utility model is installed, the ceramic sleeve 2 with the built-in fuse wire 3 is directly inserted into the 'click' sound, namely the limiting sheet 14 is clamped into the limiting groove 9 and the pressing plate 17 is reset, at the moment, the end of the fuse wire 3 is already butted on the contact 13, and the installation is completed; when the fuse wire 3 is replaced, the pressing plate 17 is pressed by one hand, the handle 19 is held by the other hand, the ceramic sleeve 2 can be directly pulled out, a new ceramic sleeve 2 is replaced, and the installation and the replacement are very convenient.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A high voltage fuse, characterized by: the ceramic bushing comprises a mounting seat and a fuse wire arranged in the ceramic bushing, wherein an upper sealing cover is arranged at the top of the ceramic bushing, a lead connecting sheet is fixed at the top of the upper sealing cover, the upper end of the fuse wire is fixed in the upper sealing cover and is connected with the lead connecting sheet, a limiting part is arranged at the lower end in the ceramic bushing, a lower sealing cover is screwed on the limiting part, the lower end of the fuse wire is fixed on the lower sealing cover and penetrates out of the lower sealing cover, inert gas is filled into the ceramic bushing between the upper sealing cover and the lower sealing cover after the ceramic bushing is vacuumized, a hollow round table is arranged at the bottom of the ceramic bushing, the tail end of the fuse wire is positioned in the round table, a limiting groove is further arranged on one side of the upper end of the ceramic bushing, a jack corresponding to the shape of the ceramic bushing is arranged on the mounting seat, a limiting mechanism is arranged in the, the equipment board is fixed with a wire holder, the bottom of the wire holder is connected with a wire, the top of the wire holder is fixed with a contact, the contact is inserted into the jack from the lower part, the ceramic sleeve is inserted into the jack, and the contact is abutted against the tail end of the fusible link.
2. A high-voltage fuse according to claim 1, characterized in that: the upper sealing cover is also provided with a hole for vacuumizing or flushing inert gas, and the top of the hole is provided with a cover cap.
3. A high voltage fuse according to claim 2, wherein: the ceramic sleeve is a square sleeve, and the bottom of the circular truncated cone is in arc transition.
4. A high voltage fuse according to claim 3, wherein: the top of the contact is in a round table shape.
5. A high-voltage fuse according to claim 4, characterized in that: the limiting mechanism comprises a limiting piece which is in telescopic connection in the jack, a groove corresponding to the limiting piece is formed in the jack, two connecting rods are connected to two sides of the limiting piece respectively, the outer ends of the two connecting rods penetrate out of corresponding channels on the mounting seat respectively, a pressing plate is fixed between the outer ends of the two connecting rods, and a spring is further sleeved on each of the two connecting rods between the pressing plate and the mounting seat.
6. A high-voltage fuse according to claim 5, characterized in that: the cross section of one end of the limiting piece, which faces the ceramic sleeve, is arc-shaped.
7. A high-voltage fuse according to claim 5, characterized in that: the top of the upper sealing cover is also provided with a handle, the top of the wire connecting sheet penetrates out of the handle, the handle is a frustum-shaped handle with a concave ring in the middle, and the top of the handle is abutted against the mounting seat after the ceramic sleeve is inserted into the jack.
8. A high voltage fuse according to claim 7, wherein: the handle is also provided with a positioning salient point.
9. A high voltage fuse according to claim 8, wherein: and a circle of damping ring is fixed at the lower end of the jack, and damping fins are bonded on the corresponding positions of the lower end of the ceramic sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021606250.7U CN212750788U (en) | 2020-08-05 | 2020-08-05 | High-voltage fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021606250.7U CN212750788U (en) | 2020-08-05 | 2020-08-05 | High-voltage fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212750788U true CN212750788U (en) | 2021-03-19 |
Family
ID=74986657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021606250.7U Active CN212750788U (en) | 2020-08-05 | 2020-08-05 | High-voltage fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212750788U (en) |
-
2020
- 2020-08-05 CN CN202021606250.7U patent/CN212750788U/en active Active
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