CN2112195U - Safety plug-in knife switch - Google Patents
Safety plug-in knife switch Download PDFInfo
- Publication number
- CN2112195U CN2112195U CN 91232798 CN91232798U CN2112195U CN 2112195 U CN2112195 U CN 2112195U CN 91232798 CN91232798 CN 91232798 CN 91232798 U CN91232798 U CN 91232798U CN 2112195 U CN2112195 U CN 2112195U
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- CN
- China
- Prior art keywords
- switch
- safety
- conducting frame
- connector
- knife switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- Switch Cases, Indication, And Locking (AREA)
- Breakers (AREA)
Abstract
The utility model discloses a safety plug-in knife switch, which is composed of an outer housing, an over voltage and leakage protector which serves as a switch, a safety connector and the switching-on frame, the insulation sheet and the indicator system of the safety connector. The knife switch changes the frame mode of the existing traditional knife switch, and the switch and the safety connector are combined into integration, which realizes the function of operating under complete power-off condition. Besides, the whole electric shock part is sealed in the outer housing, and consequently, the safety of the utility model is raised. In addition, the indicator system which is added can directly display whether the fault is line outage or fuse broken circuit. The utility model has the advantages of reasonable design, shapely configuration, simple structure, high reliability, small size and high safety. The safety plug-in knife switch is widely applicable in the electrical distribution room of a family or an industrial enterprise.
Description
The utility model relates to a kind of novel disconnecting link switch, especially a kind of safe plug-in type disconnecting link switch.
At present, China no matter family still is that the distribution of industrial enterprise is established in the chamber, the insurance disconnecting link switch of installing, all adopt single-phase or three-phase disconnecting link switch, this class insurance disconnecting link switch remains in certain weak point, mainly shows, when changing fuse or during the circuit maintenance, can not operate under the off-position fully, and the electric shock part of disconnecting link, can not be completely enclosed within the insulation shell, thereby all bring certain danger for operating personnel, simultaneously, existing single-phase disconnecting link, three-phase disconnecting link switch is on structure, and design is compact inadequately, and volume is big, outward appearance is not beautiful, and inconvenience is installed.
The purpose of this utility model be exactly design a kind of have the dual fail-safe effect, rational in infrastructure handsome in appearance, volume is little, dependable performance, safe plug-in type disconnecting link switch safe in utilization, easy for installation, change the frame mode of existing traditional disconnecting link switch, become upgrading products.
Design concept of the present utility model is achieved in that switch and fuse unit is integrated in one.Wherein switch adopts the overvoltage earth leakage protective device; fuse unit is to adopt connector and its conducting frame turning circuit that has fuse; be provided with the arc extinguishing partition therebetween, when guaranteeing safety utilization of electric power also matching design indicator system, be that line outage or insurance are opened circuit with direct demonstration.Described device all is closed in the shell, thereby forms safe plug-in type disconnecting link switch.
The utility model is that indicator system is formed by shell, insurance connector and conducting frame thereof, arc extinguishing partition, insulation board, connection lead.Wherein switch adopts metal material for overvoltage earth leakage protective device insurance connector, conducting frame, and indicator system is the control circuit that is formed by diode, resistance light-emitting diode.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the utility model safety plug-in type disconnecting link switch outside drawing,
Fig. 2 is the utility model safety plug-in type disconnecting link construction of switch schematic diagram,
Fig. 3 is the utility model safety plug-in type disconnecting link switch indicator circuit diagram,
Fig. 4 is the utility model safety plug-in type disconnecting link switch insurance connector schematic diagram
Wherein: (1) (2) entrance hole, (3) (4) install screw, (5) (6) inlet wire hold-down screw, (7) shell capping, (8) drain pan, (9) switch hole, (10) switch spanner, (11) jack of (12) insurance connector, (13) (14) outlet hold-down screw, (15) power off indicator, (16) insurance indicator circuit, (17) (18) static contact, (19) (20) connect the screw of capping and drain pan, (21) (22) (23) insulating trip, (24) switch, (25) (26) movable contact spring, (27) (28) connect lead, (29) isolation baffle plate, (30) (31) (32) (33) conducting frame, (34) arc extinguishing partition, (35) (36) (37) cable-through hole, (38) (39) wire hole, (40) insurance connector, (41) insulation handle, (42) metal conduction sheet, (43) fuse fixed contact.
Indicator circuit is formed: A is the 220V phase line, and B is the 220V zero line, resistance R, diode D
1, light-emitting diode D
2
Embodiment of the present utility model is: with reference to Fig. 1, on shell, be provided with entrance hole (1) (2), screw (3) (4) is installed, switch hole (9), switch spanner (10) is installed in this hole, two jacks (11) (12) of insurance connector, two indicating devices (15) (16) and the screw (19) (20) that connects shell capping and drain pan.
With reference to Fig. 2, on drain pan, be provided with isolation baffle plate (29), switch (24) and connector conducting sheet (30) (31) (32) (33) are separately fixed at the plate washer both sides, are provided with two cable-through holes (35) (36) on isolation baffle plate.Between every pair of conducting frame (30) (31) and (32) (33) arc extinguishing partition (34) is set, one cable-through hole (37) is arranged on this sheet, utilize this arc extinguishing partition to prevent the short circuit arc light, conducting frame (31) (33) is an output, being installed in wire hole (38) (39) locates, and conducting frame (31) connects a point of insurance indicator circuit circuit (see figure 3), and conducting frame (33) connects the b point of this circuit.Inlet wire is fixing with screw (5) (6) by entrance hole (1) (2), and connect with static contact (17) (18), wherein static contact (17) is connected with a point of power off indicator circuit (see figure 3), static contact (18) is connected with the b point of this circuit, fixed insulation sheet (21) on two static contacts, to prevent the displacement of two contacts, cause short circuit.Switch (24) adopts two movable contact springs (25) (26) of overvoltage earth leakage protective device (LBK-1A type) on it to make it and static contact (17) (18) conducting or disconnection by moving switch spanner (10), works to be switched on or switched off circuit.Cause short circuit at two movable contact spring fixed insulation sheets (22) (23) to prevent the displacement of two contacts.Draw two by two movable contact springs and connect lead (27) (28), this lead is connected to form path by cable-through hole (35) (36) and (37) with conducting frame (30) (32).By the output lead that conducting frame (31) (33) connects, fixing with outlet screw (13) (14).Shell capping and drain pan are mounted to one with screw by the screw on two shells (19) (20).
With reference to Fig. 3, indicator circuit is by resistance R
1, diode D
1, light-emitting diode D
2Form its connected mode: resistance R and diode D
1Series connection, an end is connected with phase line A, and the other end is connected with zero line B, and light-emitting diode is parallel to the two ends of diode, and 2 of a.b are and outer circuit tie point.
With reference to Fig. 4, insurance connector (40) is made up of insulation handle (41), metal conduction sheet (42), fuse fixed contact.Wherein the metal conduction sheet is embedded in inherent this sheet of insulation handle (41) and is provided with fuse fixed contact (43), and fuse is installed on herein.This connector inserts conducting sheet turning circuit by patchhole (11) (12).
Advantage part of the present utility model is: this safe plug-in type disconnecting link switch has changed the frame mode of existing disconnecting link switch, has the dual fail-safe effect, when changing fuse or maintenance circuit, can break away from power supply fully, operating under the off-position fully, and the whole electric shock position of disconnecting link all is closed in the shell, its fail safe is strengthened greatly, power failure and insurance indicator circuit system have been set up, by showing directly failure judgement in addition.This device design concept is reasonable, simple in structure, have attractive appearance, dependable performance, volume are little, safe in utilization, and the distribution chamber of establishing of family and industrial enterprise all can be extensive use of, and is the upgrading products of present traditional disconnecting link switch, has very big promotional value.
Claims (1)
- A kind of safe plug-in type disconnecting link switch, it is characterized in that: it is by shell, switch (24), insurance connector (40) and conducting frame (30) (31) (32) (33) thereof, arc extinguishing arc partition (34), indication mechanism, connecting lead (27) (28) forms, the drain pan of described shell (8) is provided with isolation baffle plate (29), switch and conducting frame are installed in the plate washer both sides, switch adopts the overvoltage earth leakage protective device, described arc extinguishing partition (34) is arranged between conducting frame (30) (31) and the conducting frame (32) (33), connect lead (27) (28) by being located at the cable-through hole (35) (36) (37) on plate washer and the arc extinguishing partition, with switch and the conducting frame formation path that fuses; Described connector (40) is made up of insulation handle (41), metal conduction sheet (42), fuse fixed contact (43), and wherein the metal conduction sheet (42) with fuse fixed contact (43) is embedded in the insulation handle (41); Described indicator system is installed in inlet wire position and outlet position respectively, forms power off indicator and insurance indicator circuit, and indicating device adopts light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91232798 CN2112195U (en) | 1991-12-30 | 1991-12-30 | Safety plug-in knife switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91232798 CN2112195U (en) | 1991-12-30 | 1991-12-30 | Safety plug-in knife switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2112195U true CN2112195U (en) | 1992-08-05 |
Family
ID=4937763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91232798 Granted CN2112195U (en) | 1991-12-30 | 1991-12-30 | Safety plug-in knife switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2112195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405393A (en) * | 2016-05-24 | 2017-02-15 | 国家电网公司 | Apparatus and method of determining faults of low voltage breaker incoming line terminal |
| CN112017898A (en) * | 2020-09-01 | 2020-12-01 | 河源市省科院研究院 | State monitoring device for high-power supply equipment and using method |
-
1991
- 1991-12-30 CN CN 91232798 patent/CN2112195U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405393A (en) * | 2016-05-24 | 2017-02-15 | 国家电网公司 | Apparatus and method of determining faults of low voltage breaker incoming line terminal |
| CN106405393B (en) * | 2016-05-24 | 2018-06-29 | 国家电网公司 | A kind of low-voltage circuit breaker end of incoming cables failure judgment device and method |
| CN112017898A (en) * | 2020-09-01 | 2020-12-01 | 河源市省科院研究院 | State monitoring device for high-power supply equipment and using method |
| CN112017898B (en) * | 2020-09-01 | 2022-10-04 | 河源市省科院研究院 | State monitoring device for high-power supply equipment and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |