CN203503534U - Low voltage fuse type disconnecting switch - Google Patents
Low voltage fuse type disconnecting switch Download PDFInfo
- Publication number
- CN203503534U CN203503534U CN201320622896.8U CN201320622896U CN203503534U CN 203503534 U CN203503534 U CN 203503534U CN 201320622896 U CN201320622896 U CN 201320622896U CN 203503534 U CN203503534 U CN 203503534U
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- tab
- knife
- moving
- static
- contact
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- Expired - Fee Related
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Abstract
The utility model discloses a low voltage fuse type disconnecting switch which comprises an insulating pillar moving end, an insulating pillar static end, a moving contact tab, a static contact tab, a static end tab, a moving end tab, an arc extinguishing carbon brush, a static knife contact, a moving knife contact, an insulating pull bar and a fuse piece. The bottoms of the insulating pillar moving end and the insulating pillar static end are mounted on a pedestal; the moving contact tab and the static contact pad are respectively mounted on the insulating pillar moving end and the insulating pillar static end; one end of the static knife contact is pivoted to the static contact tab, the other end of the static knife contact is connected with one end of the moving knife contact via the insulating pull bar, and the static knife contact is electrically connected with the moving knife contact via the fuse piece; and the static end tab is mounted on the static contact tab, the moving end tab is mounted at the other end of moving knife contact, and the arc extinguishing carbon brush is mounted on the moving end tab in correspondence to the static end tab. The arc extinguishing carbon brush makes contact with the static end tab before the moving knife contact is closed to play the role of arc extinguishing, thereby avoiding that large instant current is generated when the moving knife contact and the moving contact tab are switched on, and protecting load equipment.
Description
Technical field
The utility model relates to a kind of low voltage fuse type isolating switch.
Background technology
Isolating switch is a kind of common electric that plays buffer action in circuit.Low voltage fuse type isolating switch is a kind of of isolating switch, and it can guarantee on-load connecting and disconnecting circuit, and has the safe disjunction protection of reliable overcurrent or short circuit.
In prior art, the structure of low voltage fuse type isolating switch is mainly comprised of insulation column moved end, the quiet end of insulation column, movable contact plate, static contact panel, quiescent contacting knife, movable touch knife, insulated tension pole and fuse piece.The quiet end of insulation column moved end and insulation column keeps certain distance to be arranged on base, movable contact plate and static contact panel are arranged on respectively the top of insulation column moved end and the quiet end of insulation column, one end of quiescent contacting knife is articulated on static contact panel, the other end of quiescent contacting knife is connected with movable touch knife by insulated tension pole, between quiescent contacting knife and movable touch knife, by fuse piece, realizes electrical connection.
During use, rotate quiescent contacting knife, movable touch knife is turned to movable contact plate thereupon and contact, close a floodgate and realize circuit connection, otherwise rightabout rotates quiescent contacting knife, makes movable touch knife separated with movable contact plate, open a sluice gate to realize circuit and disconnect.
Existing low voltage fuse type isolating switch, because directly contact with movable contact plate and realizes circuit and connect by the movable touch knife of the silver-plated material of red copper, easy generation instantaneous large-current when circuit is connected, so, very easily load equipment is damaged.And quiescent contacting knife generally adopts common isometrical circular shaft pivot joint, circular shaft and axle sleeve rely on extruding fit, or installation and removal effort very all, or easily install and also easily occur the phenomenon that pitches, and affect the normal use of isolating switch.
Therefore, the inventor improves the structure of existing low voltage fuse type isolating switch, and this case produces thus.
Utility model content
Main purpose of the present utility model is to provide a kind of low voltage fuse type isolating switch, produces instantaneous large-current when avoiding closing a floodgate, protection load equipment
.
Secondary objective of the present utility model is to provide a kind of low voltage fuse type isolating switch, to facilitate quiescent contacting knife installation and removal, and guarantees that isolating switch is normally used
.
In order to reach above-mentioned purpose, solution of the present utility model is:
Low voltage fuse type isolating switch, comprises insulation column moved end, the quiet end of insulation column, movable contact plate, static contact panel, quiet run-on tab, moving run-on tab, arc extinguishing carbon brush, quiescent contacting knife, movable touch knife, insulated tension pole and fuse piece; The quiet bottom of insulation column moved end and insulation column portion is arranged on base, movable contact plate and static contact panel are arranged on respectively on insulation column moved end and the quiet end of insulation column, one end of quiescent contacting knife is articulated on static contact panel, the other end of quiescent contacting knife is connected by one end of insulated tension pole and movable touch knife, between quiescent contacting knife and movable touch knife, by fuse piece, realize electrical connection, quiet run-on tab is arranged on movable contact plate, moving run-on tab is arranged on the other end of movable touch knife, and on moving run-on tab, corresponding quiet run-on tab is arranged on the arc extinguishing carbon brush first contacting with quiet run-on tab before movable touch knife closes a floodgate.
Described arc extinguishing carbon brush is arranged on the lower end of moving run-on tab.
The top edge of described quiet run-on tab and lower limb outwards turn down to form and are beneficial to upper hem and the lower hem that arc extinguishing carbon brush imports or derives, and the bottom and upper segment of arc extinguishing carbon brush forms lead angle.
Drag hook has also been installed on described movable touch knife.
One end of described quiescent contacting knife is provided with support, and support is articulated on static contact panel.
On described static contact panel, circular shaft is installed, the cutting of the below of circular shaft forms tangent plane makes circular shaft have major diameter and minor axis, forms the axle sleeve with opening on support, and A/F is less than the major diameter of circular shaft and is greater than the minor axis of circular shaft.
Adopt after such scheme; the utility model is because increased quiet run-on tab, moving run-on tab and arc extinguishing carbon brush; during use; arc extinguishing carbon brush can elder generation before movable touch knife closes a floodgate contact with quiet run-on tab and plays the effect of arc extinguishing; while avoiding movable touch knife to contact combined floodgate with movable contact plate, produce instantaneous large-current, thus protection load equipment
.
In addition, the utility model changes the common circular shaft of quiescent contacting knife pivot joint the circular shaft with tangent plane into, and utilize the axle sleeve with opening to coordinate with the circular shaft with tangent plane, realize the pivot joint of quiescent contacting knife, like this, only have the minor axis of circular shaft to pass from the opening of axle sleeve, facilitate the installation and removal of quiescent contacting knife, and as long as the minor axis of circular shaft departs from the opening of the axle sleeve that staggers, quiescent contacting knife is firmly articulated on static contact panel, has guaranteed that isolating switch is normally used
.
Accompanying drawing explanation
Fig. 1 is the view of opening a sluice gate of the present utility model;
Fig. 2 is "on" position schematic diagram of the present utility model.
Label declaration
Insulation column moved end 1, the quiet end 2 of insulation column, movable contact plate 3, static contact panel 4, circular shaft 41, tangent plane 42, quiet run-on tab 5, upper hem 51, lower hem 52, moving run-on tab 6, arc extinguishing carbon brush 7, lead angle 71, quiescent contacting knife 8, support 81, opening 82, axle sleeve 83, movable touch knife 9, drag hook 91, insulated tension pole 10, fuse piece 11, base 12.
Embodiment
As depicted in figs. 1 and 2, the low voltage fuse type isolating switch that the utility model discloses, comprises insulation column moved end 1, the quiet end 2 of insulation column, movable contact plate 3, static contact panel 4, quiet run-on tab 5, moving run-on tab 6, arc extinguishing carbon brush 7, quiescent contacting knife 8, movable touch knife 9, insulated tension pole 10 and fuse piece 11.
The quiet end of insulation column moved end 1 and insulation column 2 bottoms are arranged on base 12, movable contact plate 3 and static contact panel 4 are arranged on respectively on insulation column moved end 1 and the quiet end 2 of insulation column, one end of quiescent contacting knife 8 is articulated on static contact panel 4, the other end of quiescent contacting knife 8 is connected with one end of movable touch knife 9 by insulated tension pole 10, between quiescent contacting knife 8 and movable touch knife 9, by fuse piece 11, is realized and being electrically connected to.
Improvement emphasis of the present utility model is: quiet run-on tab 5 is arranged on movable contact plate 3; moving run-on tab 6 is arranged on the other end of movable touch knife 9; the corresponding quiet run-on tab 5 of arc extinguishing carbon brush 7 is arranged on moving run-on tab 6 (specifically can be arranged on arc extinguishing carbon brush 7 lower end of moving run-on tab 6); arc extinguishing carbon brush 7 first contacts with quiet run-on tab 5 before movable touch knife 9 closes a floodgate; and play the effect of arc extinguishing; while avoiding movable touch knife 9 to contact combined floodgate with movable contact plate 3, produce instantaneous large-current, thus protection load equipment
.
While coordinating with quiet run-on tab 5 in order to be beneficial to arc extinguishing carbon brush 7, import or derive, this embodiment outwards turns down formation upper hem 51 and lower hem 52 at top edge and the lower limb of quiet run-on tab 5, and the bottom and upper segment of arc extinguishing carbon brush 7 is the corresponding lead angle 71 that forms.
In order conveniently to open a sluice gate, to close a floodgate, this embodiment has also installed drag hook 91 on movable touch knife 9.
In order to facilitate the installation of quiescent contacting knife 8, this embodiment is first arranged on one end of quiescent contacting knife 8 on a support 81, then support 81 is articulated on static contact panel 4.And, in order to further facilitate the installation and removal of quiescent contacting knife 8, this embodiment installs circular shaft 41 on static contact panel 4, the below cutting of circular shaft 41 forms tangent plane 42, make like this circular shaft 41 there is major diameter and minor axis, on support 81, form the axle sleeve 83 with opening 82, and the width design of opening 82 must be less than the major diameter of circular shaft 41 and be greater than the minor axis of circular shaft 41, during the installation and removal of quiescent contacting knife 8, only having when support 81 goes to certain angle aligns the minor axis of circular shaft 41 and the opening 82 of axle sleeve 83, circular shaft 41 could pass opening 82, realize the installation and removal of quiescent contacting knife 8, and as long as the minor axis of circular shaft 41 departs from the opening 82 of the axle sleeve 83 that staggers, quiescent contacting knife 8 is firmly articulated on static contact panel 4, guaranteed that isolating switch is normally used
.
These are only specific embodiment of the utility model, not the restriction to protection range of the present utility model.All equivalent variations of doing according to the mentality of designing of this case, all fall into the protection range of this case.
Claims (6)
1. low voltage fuse type isolating switch, is characterized in that: comprise insulation column moved end, the quiet end of insulation column, movable contact plate, static contact panel, quiet run-on tab, moving run-on tab, arc extinguishing carbon brush, quiescent contacting knife, movable touch knife, insulated tension pole and fuse piece; The quiet bottom of insulation column moved end and insulation column portion is arranged on base, movable contact plate and static contact panel are arranged on respectively on insulation column moved end and the quiet end of insulation column, one end of quiescent contacting knife is articulated on static contact panel, the other end of quiescent contacting knife is connected by one end of insulated tension pole and movable touch knife, between quiescent contacting knife and movable touch knife, by fuse piece, realize electrical connection, quiet run-on tab is arranged on movable contact plate, moving run-on tab is arranged on the other end of movable touch knife, and on moving run-on tab, corresponding quiet run-on tab is arranged on the arc extinguishing carbon brush first contacting with quiet run-on tab before movable touch knife closes a floodgate.
2. low voltage fuse type isolating switch as claimed in claim 1, is characterized in that: described arc extinguishing carbon brush is arranged on the lower end of moving run-on tab.
3. low voltage fuse type isolating switch as claimed in claim 1, it is characterized in that: the top edge of described quiet run-on tab and lower limb outwards turn down to form and be beneficial to upper hem and the lower hem that arc extinguishing carbon brush imports or derives, and the bottom and upper segment of arc extinguishing carbon brush forms lead angle.
4. low voltage fuse type isolating switch as claimed in claim 1, is characterized in that: drag hook has also been installed on described movable touch knife.
5. low voltage fuse type isolating switch as claimed in claim 1, is characterized in that: one end of described quiescent contacting knife is provided with support, and support is articulated on static contact panel.
6. low voltage fuse type isolating switch as claimed in claim 5, it is characterized in that: on described static contact panel, circular shaft is installed, the below cutting of circular shaft forms tangent plane makes circular shaft have major diameter and minor axis, on support, form the axle sleeve with opening, and A/F is less than the major diameter of circular shaft and is greater than the minor axis of circular shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622896.8U CN203503534U (en) | 2013-10-10 | 2013-10-10 | Low voltage fuse type disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622896.8U CN203503534U (en) | 2013-10-10 | 2013-10-10 | Low voltage fuse type disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503534U true CN203503534U (en) | 2014-03-26 |
Family
ID=50334493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320622896.8U Expired - Fee Related CN203503534U (en) | 2013-10-10 | 2013-10-10 | Low voltage fuse type disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203503534U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500680A (en) * | 2013-10-10 | 2014-01-08 | 德基申（厦门）电气有限公司 | Low-voltage fuse type isolating switch |
| CN104021970A (en) * | 2014-05-29 | 2014-09-03 | 国家电网公司 | Electric power line double-knife combination linkage type low-voltage knife fuse switch |
-
2013
- 2013-10-10 CN CN201320622896.8U patent/CN203503534U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500680A (en) * | 2013-10-10 | 2014-01-08 | 德基申（厦门）电气有限公司 | Low-voltage fuse type isolating switch |
| CN104021970A (en) * | 2014-05-29 | 2014-09-03 | 国家电网公司 | Electric power line double-knife combination linkage type low-voltage knife fuse switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20211010 |