CN110911207A - Knife switch of electric power distribution device - Google Patents
Knife switch of electric power distribution device Download PDFInfo
- Publication number
- CN110911207A CN110911207A CN201911220230.8A CN201911220230A CN110911207A CN 110911207 A CN110911207 A CN 110911207A CN 201911220230 A CN201911220230 A CN 201911220230A CN 110911207 A CN110911207 A CN 110911207A
- Authority
- CN
- China
- Prior art keywords
- insulating
- switch
- unit
- shell
- wall
- 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.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Distribution Board (AREA)
Abstract
The invention provides a knife switch of an electric power distribution device, which comprises a shell unit, a knife unit and a lead fixing unit, wherein the shell unit is provided with a plurality of switch blades; the switch blade unit is arranged in the shell unit through an insulating pin shaft, a lead fixing unit is arranged at the lower end of the shell unit, and the lead fixing unit is matched with the switch blade unit; the invention can solve the problem that the existing knife switch of the power distribution device often generates power sparks at the moment of switching on or isolating the power supply, and the generated power sparks cause potential danger to workers; the outer wall of the existing knife switch is exposed, and a large amount of dust falls into the knife switch after long-time use, so that the conductivity is reduced; and the prior knife switch is not firmly fixed when being connected with a wire, and the invention can shake to cause the connected wire to loosen and generate the danger of circuit break for a long time.
Description
Technical Field
The invention relates to the technical field of electrical engineering, in particular to a knife switch of an electric power distribution device.
Background
The knife switch is also called knife switch or isolating switch, it is the simplest and widely used low-voltage electrical apparatus in the manual control electrical apparatus, the function of the knife switch in the circuit is: isolating the power supply to ensure the safety of circuit and equipment maintenance; and breaking the load, such as switching on and off a low-voltage circuit with low capacity infrequently or starting a low-capacity motor directly.
However, the existing knife switch of the power distribution device often generates power sparks at the moment of switching on or isolating a power supply, and the generated power sparks cause potential danger to workers; the outer wall of the existing knife switch is exposed, and a large amount of dust falls into the knife switch after long-time use, so that the conductivity is reduced; and the existing knife switch is not firmly fixed when being connected with a wire, and the invention can shake to cause the connected wire to loosen and generate the danger of circuit break for a long time.
The switch aims to solve the problems of the existing knife switch of the power distribution device in the daily use process; the invention provides a knife switch of an electric power distribution device.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme that the electric power distribution device knife switch comprises a shell unit, a knife unit and a lead fixing unit; the switch blade unit is arranged in the shell unit through an insulating pin shaft, a lead fixing unit is arranged at the lower end of the shell unit, and the lead fixing unit is matched with the switch blade unit; wherein:
the shell unit comprises a knife switch shell, a clamping sheet, a supporting spring, a conductive module, an insulating arc cover and a telescopic spring; the knife switch shell is made of insulating materials; symmetrical rectangular cavities are arranged in the knife switch shell, symmetrical clamping pieces are arranged in cutting holes in the inner wall of the bottom end of the cavity, and the opposite clamping pieces are connected through supporting springs; the conductive module is fixed in the rectangular cavity of the knife switch shell in an inserting mode; the conductive module is fixed on the knife switch shell through a bolt; the upper end of the rectangular cavity of the switch blade shell is symmetrically provided with insulating arc covers in a sliding fit mode, and the insulating arc covers are connected with the inside of the switch blade shell through telescopic springs; the potential damage to the arms of a worker caused by electric sparks or electric attraction generated at the moment of switching off and switching on the current can be protected at the moment of switching off and switching on the current through the arranged insulating arc cover, so that the use safety of the worker is ensured; and external dust is prevented from scattering in the invention, so that the normal conductivity of the conductive material is ensured.
The lead fixing unit comprises an insulation clamping block, a linkage spring, a clamping piece, an arc-shaped metal copper sheet, a conductive wire and a fixing module; the insulation clamping block is arranged outside a lower end rectangular hole of the knife switch shell, a circular through hole is formed in the middle of the insulation clamping block, a fixing module is arranged in the circular through hole, a conductive wire is connected to the fixing module, the other end of the conductive wire is connected to the arc-shaped metal copper sheet, the arc-shaped metal copper sheet is arranged on the arc-shaped outer wall of the clamping piece, the clamping piece is installed inside the insulation clamping block in a sliding fit mode, and the clamping piece and the insulation clamping block are connected through a linkage spring.
The fixed module comprises an annular clamping sleeve, a copper metal block, a wire pressing sleeve, a wire pressing block, a wire pressing spring, an insulating push rod, a wire pressing clamping block and an auxiliary spring; the copper metal block is arranged on the outer wall of the rear end of the annular clamping sleeve, a circular cut hole is formed in the copper metal block, wire pressing sleeves are uniformly arranged in the circular cut hole in a sliding fit mode around the circumferential direction of the circular cut hole, wire pressing springs are arranged in the wire pressing sleeves, the wire pressing blocks are arranged in the wire pressing sleeves in a sliding fit mode, and chamfering structures are arranged on the outer wall of the top end of each wire pressing block; the inside of the annular clamping sleeve is uniformly provided with a line pressing fixture block through an auxiliary spring, one end of the inner wall of the line pressing fixture block is of a chamfer structure, one end of the line pressing fixture block is matched with an insulating push rod, and the insulating push rod is arranged inside the annular clamping sleeve in a movable connection mode; one end of the wire is inserted into the copper metal block for communication, and the insulating push rod is inserted to enable the wire pressing clamping block to fix the outer wall of the wire, so that the wire is prevented from falling off; the connecting area of the lead is increased, the conductivity is strong, and short circuit caused by overheating of the joint due to overlarge power can be avoided; the safety of use is improved.
Preferably; the conductive module comprises a conductive clamping block, a copper wiring terminal, a fixed spring and a spiral connecting column; copper binding posts are uniformly arranged at the upper end of the conductive clamping block in a movable connection mode, and the copper binding posts are connected with the conductive clamping block through fixed springs; the outer wall of one end of the conductive clamping block is provided with a plug hole matched with the clamping sheet; the outer wall of the other end of the conductive clamping block is provided with a spiral connecting column in a threaded connection mode, and a penetrating wire hole is formed in the spiral connecting column; the conducting wire penetrates through the conducting wire hole of the spiral connecting column and is fixed on the conducting fixture block by screwing the spiral connecting column, and when the conducting plate is pulled down to be communicated with electric power, the conducting plate is contacted with the copper binding posts to improve the conducting performance; the normal use of the invention is ensured.
The knife switch unit comprises a conducting strip, an insulating plate and a push-pull handle; one end of the conducting strip is arranged in a rectangular cavity of the switch blade shell through an insulating pin shaft, the other end of the conducting strip is connected to the insulating plate, a push-pull handle made of insulating materials is arranged on the outer side of the insulating plate, and a rubber sleeve is sleeved on the outer wall of the conducting strip close to one side of the insulating plate; the push-pull handle is operated to control the on-off of the electric power, and a rubber sleeve is sleeved on the outer wall of the conducting strip close to one end operated by a hand to prevent the arm of the hand from conducting electricity; the safety of the operators is ensured.
Preferably; the outer wall of the arc-shaped metal copper sheet is provided with uniform grooves, and the arc-shaped metal copper sheet is matched with the top end of the conducting sheet; the uniform grooves are formed in the outer wall of the arc-shaped metal copper sheet, so that the arc-shaped metal copper sheet is matched with the conducting sheet conveniently, and the conducting performance of the invention is improved; the invention ensures that the invention can not be accidentally broken in the normal use process.
Preferably; the outer wall of the clamping piece is provided with a ball in a movable connection mode; the balls are arranged on the outer wall of the clamping piece, so that the clamping piece is matched with the conductive clamping block conveniently, and the conductive clamping block is further fixed conveniently.
Preferably; concave-convex fixing grooves are formed in the outer wall of the lower end of each wire pressing fixture block, and the concave-convex fixing grooves of the lower ends of the two opposite wire pressing fixture blocks are matched with each other; the fixed slot through setting up unsmooth dislocation at the lower extreme of line ball fixture block conveniently compresses tightly fixedly with external wire, prevents that the wire from droing.
Advantageous effects
The electric spark protection device can protect potential harm to the arms of people caused by electric sparks or electric attraction generated instantly when the current is switched off and on instantly through the arranged insulating arc-shaped cover, and ensures the use safety of workers; external dust is prevented from scattering inside the conductive paint, so that the normal conductivity of the conductive paint is ensured;
the lead fixing unit is convenient for fixing the lead, and one end of the lead is connected with the copper metal block well after the lead is fixed; the connecting area of the lead is increased, the conductivity is strong, and short circuit caused by overheating of the joint due to overlarge power can be avoided; the use safety is improved;
the uniform grooves are formed in the outer wall of the arc-shaped metal copper sheet, so that the arc-shaped metal copper sheet is matched with the conducting sheet conveniently, and the conducting performance of the invention is improved; the invention ensures that the invention can not be accidentally broken in the normal use process.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 4 is an enlarged view of a portion of the invention at M in FIG. 2;
fig. 5 is a partial enlarged view of the invention at N in fig. 2.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.
The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.
As shown in fig. 1 to 5, an electric power distribution device blade switch includes a housing unit 1, a blade unit 2, and a wire fixing unit 3; a knife switch unit 2 is arranged in the shell unit 1 through an insulating pin shaft, a lead fixing unit 3 is arranged at the lower end of the shell unit 1, and the lead fixing unit 3 is matched with the knife switch unit 2; wherein:
the shell unit 1 comprises a knife switch shell 11, a clamping sheet 12, a supporting spring 13, a conductive module 14, an insulating arc cover 15 and a telescopic spring 16; the knife switch shell 11 is made of insulating materials; symmetrical rectangular cavities are arranged in the knife switch shell 11, symmetrical clamping pieces 12 are arranged in cut holes in the inner wall of the bottom end of the cavity, and the opposite clamping pieces 12 are connected through supporting springs 13; the conductive module 14 is fixed inside the rectangular cavity of the knife switch shell 11 in an inserting mode; and the conductive module 14 is fixed to the blade housing 11 by bolts; the upper end of the rectangular cavity of the switch blade shell 11 is symmetrically provided with insulating arc covers 15 in a sliding fit mode, and the insulating arc covers 15 are connected with the inside of the switch blade shell 11 through telescopic springs 16; the outer wall of the clamping piece 12 is provided with a ball in a movable connection mode; the balls are arranged on the outer wall of the clamping sheet 12, so that the clamping sheet 12 is matched with the conductive clamping block 141, and the conductive clamping block 141 is further fixed conveniently; the insulating arc cover 15 can protect electric sparks generated instantly or potential harm to the arms of people caused by electric attraction at the moment of switching off and switching on the current, so that the use safety of workers is ensured; and external dust is prevented from scattering in the invention, so that the normal conductivity of the conductive material is ensured.
The conductive module 14 comprises a conductive fixture block 141, a copper binding post 142, a fixing spring 143 and a spiral connecting post 144; the upper end of the conductive fixture block 141 is uniformly provided with copper binding posts 142 in a movable connection manner, and the copper binding posts 142 are connected with the conductive fixture block 141 through a fixed spring 143; the outer wall of one end of the conductive fixture block 141 is provided with a plug hole matched with the clamping piece 12; the outer wall of the other end of the conductive fixture block 141 is provided with a spiral connecting column 144 in a threaded connection mode, and a through wire guide hole is formed inside the spiral connecting column 144; the conducting wire penetrates through the conducting wire hole of the spiral connecting column 144 and is fixed on the conducting fixture block 141 by screwing the spiral connecting column 144, and when the conducting plate 21 is pulled down to connect power, the conducting plate 21 is contacted with the copper binding posts 142 to improve the conducting performance; the normal use of the invention is ensured.
The knife switch unit 2 comprises a conducting strip 21, an insulating plate 22 and a push-pull handle 23; one end of the conducting strip 21 is arranged in a rectangular cavity of the switch blade shell 11 through an insulating pin shaft, the other end of the conducting strip 21 is connected to the insulating plate 22, a push-pull handle 23 made of insulating materials is arranged on the outer side of the insulating plate 22, and a rubber sleeve is sleeved on the outer wall of the conducting strip 21 close to one side of the insulating plate 22; the push-pull handle 23 is operated to control the on-off of the electric power, and a rubber sleeve is sleeved on the outer wall of the conducting strip 21 close to one end operated by a hand to prevent the arm of the hand from conducting electricity; the safety of the operators is ensured.
The lead fixing unit 3 comprises an insulation fixture block 31, a linkage spring 32, a clamping piece 33, an arc-shaped metal copper sheet 34, a conductive wire 35 and a fixing module 36; the insulation clamping block 31 is arranged outside a rectangular hole at the lower end of the knife switch shell 11, a circular through hole is formed in the middle of the insulation clamping block 31, a fixing module 36 is arranged in the circular through hole, a conducting wire 35 is connected to the fixing module 36, the other end of the conducting wire 35 is connected to an arc-shaped metal copper sheet 34, the arc-shaped metal copper sheet 34 is arranged on the arc-shaped outer wall of the clamping piece 33, the clamping piece 33 is installed inside the insulation clamping block 31 in a sliding fit mode, and the clamping piece 33 is connected with the insulation clamping block 31 through a linkage spring 32; the outer wall of the arc-shaped metal copper sheet 34 is provided with uniform grooves, and the arc-shaped metal copper sheet 34 is matched with the top end of the conducting sheet 21; the uniform grooves are formed in the outer wall of the arc-shaped metal copper sheet 34, so that the arc-shaped metal copper sheet 34 is matched with the conducting sheet 21 conveniently, and the conducting performance of the invention is improved; the invention ensures that the invention can not be accidentally broken in the normal use process.
The fixing module 36 comprises an annular clamping sleeve 361, a copper metal block 362, a line pressing sleeve 363, a line pressing block 364, a line pressing spring 365, an insulating push rod 366, a line pressing clamping block 367 and an auxiliary spring 368; the copper metal block 362 is arranged on the outer wall of the rear end of the annular clamping sleeve 361, a circular cut hole is formed in the copper metal block 362, wire pressing sleeves 363 are evenly arranged in the circular cut hole in a sliding fit mode around the circumferential direction of the circular cut hole, wire pressing springs 365 are arranged in the wire pressing sleeves 363, wire pressing blocks 364 are arranged in the wire pressing sleeves 363 in a sliding fit mode, and a chamfering structure is arranged on the outer wall of the top end of each wire pressing block 364; a wire pressing fixture block 367 is uniformly arranged in the annular clamping sleeve 361 through an auxiliary spring 368, one end of the inner wall of the wire pressing fixture block 367 is of a chamfer structure, one end of the wire pressing fixture block 367 is matched with an insulating push rod 366, and the insulating push rod 366 is arranged in the annular clamping sleeve 361 in a movable connection mode; concave and convex fixing grooves are formed in the outer wall of the lower end of each wire pressing fixture block 367, and the concave and convex fixing grooves at the lower ends of the two opposite wire pressing fixture blocks 367 are matched with each other; the concave-convex staggered fixing groove is formed in the lower end of the wire pressing clamping block 367, so that an external wire can be conveniently pressed and fixed, and the wire is prevented from falling off; one end of a wire is inserted into the copper metal block 362 to be communicated, and the insulating push rod 366 is inserted to enable the wire pressing clamping block 367 to fix the outer wall of the wire, so that the wire is prevented from falling off, the wire fixing unit 3 is arranged to facilitate the fixation of the wire, and the connection performance between one end of the wire and the copper metal block 362 is excellent after the wire is fixed; the connecting area of the lead is increased, the conductivity is strong, and short circuit caused by overheating of the joint due to overlarge power can be avoided; the safety of use is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A knife switch of an electric power distribution device comprises a shell unit (1), a knife unit (2) and a lead fixing unit (3); the method is characterized in that: the switch blade unit (2) is installed in the shell unit (1) through an insulating pin shaft, a lead fixing unit (3) is arranged at the lower end of the shell unit (1), and the lead fixing unit (3) is matched with the switch blade unit (2); wherein:
the shell unit (1) comprises a knife switch shell (11), a clamping sheet (12), a supporting spring (13), a conductive module (14), an insulating arc cover (15) and a telescopic spring (16); the knife switch shell (11) is made of insulating materials; symmetrical rectangular cavities are arranged in the knife switch shell (11), symmetrical clamping pieces (12) are arranged in cutting holes in the inner wall of the bottom end of the cavity, and the opposite clamping pieces (12) are connected through supporting springs (13); the conductive module (14) is fixed in the rectangular cavity of the knife switch shell (11) in an inserting mode; the conductive module (14) is fixed on the knife switch shell (11) through a bolt; the upper end of the rectangular cavity of the switch blade shell (11) is symmetrically provided with insulating arc covers (15) in a sliding fit mode, and the insulating arc covers (15) are connected with the inside of the switch blade shell (11) through telescopic springs (16);
the lead fixing unit (3) comprises an insulation clamping block (31), a linkage spring (32), a clamping piece (33), an arc-shaped metal copper sheet (34), a conductive wire (35) and a fixing module (36); insulating fixture block (31) set up in the lower extreme rectangular hole outside of plug-in strip casing (11), and the middle part of insulating fixture block (31) is provided with circular through-hole, is provided with fixed module (36) in its circular through-hole, fixed module (36) on be connected with conductor wire (35), and the other end of conductor wire (35) is connected on arc metal copper sheet (34), arc metal copper sheet (34) set up on the arc outer wall of joint spare (33), joint spare (33) install the inside at insulating fixture block (31) through sliding fit, and be connected through linkage spring (32) between joint spare (33) and insulating fixture block (31).
2. An electrical power distribution device blade switch as claimed in claim 1, wherein: the fixing module (36) comprises an annular clamping sleeve (361), a copper metal block (362), a line pressing sleeve (363), a line pressing block (364), a line pressing spring (365), an insulating push rod (366), a line pressing clamping block (367) and an auxiliary spring (368); the copper metal block (362) is arranged on the outer wall of the rear end of the annular clamping sleeve (361), a circular cut hole is formed in the copper metal block (362), wire pressing sleeves (363) are uniformly arranged in the circular cut hole in a sliding fit mode around the circumferential direction of the circular cut hole, a wire pressing spring (365) is arranged in each wire pressing sleeve (363), each wire pressing block (364) is arranged in each wire pressing sleeve (363) in a sliding fit mode, and a chamfer structure is arranged on the outer wall of the top end of each wire pressing block (364); the wire pressing clamping block (367) is uniformly arranged in the annular clamping sleeve (361) through the auxiliary spring (368), one end of the inner wall of the wire pressing clamping block (367) is of a chamfer structure, one end of the wire pressing clamping block (367) is matched with the insulating push rod (366), and the insulating push rod (366) is arranged in the annular clamping sleeve (361) in a movable connection mode.
3. An electrical power distribution device blade switch as claimed in claim 1, wherein: the conductive module (14) comprises a conductive fixture block (141), a copper binding post (142), a fixed spring (143) and a spiral connecting post (144); the upper end of the conductive fixture block (141) is uniformly provided with copper binding posts (142) in a movable connection mode, and the copper binding posts (142) are connected with the conductive fixture block (141) through fixed springs (143); the outer wall of one end of the conductive clamping block (141) is provided with a plug hole matched with the clamping sheet (12); the outer wall of the other end of the conductive fixture block (141) is provided with a spiral connecting column (144) in a threaded connection mode, and a penetrating wire guide hole is formed in the spiral connecting column (144).
4. An electrical power distribution device blade switch as claimed in claim 1, wherein: the knife switch unit (2) comprises a conducting strip (21), an insulating plate (22) and a push-pull handle (23); one end of the conducting strip (21) is installed in a rectangular cavity of the switch blade shell (11) through an insulating pin shaft, the other end of the conducting strip (21) is connected to the insulating plate (22), a push-pull handle (23) made of insulating materials is arranged on the outer side of the insulating plate (22), and a rubber sleeve is sleeved on the outer wall of the conducting strip (21) close to one side of the insulating plate (22).
5. An electrical power distribution device blade switch as claimed in claim 1, wherein: the outer wall of the arc-shaped metal copper sheet (34) is provided with uniform grooves, and the arc-shaped metal copper sheet (34) is matched with the top end of the conducting sheet (21).
6. An electrical power distribution device blade switch as claimed in claim 1, wherein: the outer wall of the clamping piece (12) is provided with a ball in a movable connection mode.
7. An electrical power distribution device blade switch as claimed in claim 2, wherein: concave and convex fixing grooves are formed in the outer wall of the lower end of each wire pressing clamping block (367), and the concave and convex fixing grooves of the lower ends of the two opposite wire pressing clamping blocks (367) are matched with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220230.8A CN110911207A (en) | 2019-12-03 | 2019-12-03 | Knife switch of electric power distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220230.8A CN110911207A (en) | 2019-12-03 | 2019-12-03 | Knife switch of electric power distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110911207A true CN110911207A (en) | 2020-03-24 |
Family
ID=69821741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911220230.8A Withdrawn CN110911207A (en) | 2019-12-03 | 2019-12-03 | Knife switch of electric power distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110911207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488883A (en) * | 2021-08-05 | 2021-10-08 | 上海宝临防爆电器有限公司 | Explosion-proof box with explosion-proof surface |
-
2019
- 2019-12-03 CN CN201911220230.8A patent/CN110911207A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488883A (en) * | 2021-08-05 | 2021-10-08 | 上海宝临防爆电器有限公司 | Explosion-proof box with explosion-proof surface |
| CN113488883B (en) * | 2021-08-05 | 2024-06-14 | 上海宝临防爆电器有限公司 | Explosion-proof box with explosion-proof surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101910462B1 (en) | Safety system for high current applications | |
| CN110911207A (en) | Knife switch of electric power distribution device | |
| CN208570511U (en) | It is capable of the fuse of quick-replaceable melt | |
| US5315475A (en) | Electrician's free power cord | |
| CN210119308U (en) | GIS isolator temperature monitoring device | |
| US7897275B2 (en) | Electrical rechargeable battery | |
| CN211016980U (en) | Pressure-driven opening and closing wire clamp | |
| CN209747435U (en) | Installation device of fuse | |
| KR101205016B1 (en) | The power connector | |
| CN219458091U (en) | Electric connector for vehicle | |
| CN102405566A (en) | Electric terminal for leading a conductor through a wall | |
| CN111489943A (en) | Plug-in fuse and installation method | |
| CN220066105U (en) | Load switch convenient to wiring | |
| CN214672433U (en) | High-breaking molded case circuit breaker | |
| CN208570512U (en) | It is capable of the fuse of quick-replaceable melt | |
| CN219592117U (en) | Surge protector convenient to change fuse | |
| US4633360A (en) | Station protector | |
| CN214542105U (en) | Conductive connection structure and protection device of fuse | |
| CN220963199U (en) | Direct current switch seat with fuse | |
| CN204651615U (en) | A kind of safety plug | |
| CN216354968U (en) | Quick access device and access box | |
| KR200294413Y1 (en) | Safety device of electrical appliance | |
| CN211720064U (en) | Outdoor distribution box | |
| CN213815945U (en) | Protection device for high-voltage isolating switch | |
| CN217426620U (en) | Novel high-low voltage isolating switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200324 |
|
| WW01 | Invention patent application withdrawn after publication |