CN202487475U - Low-voltage fusing type disconnecting switch - Google Patents
Low-voltage fusing type disconnecting switch Download PDFInfo
- Publication number
- CN202487475U CN202487475U CN2012200113241U CN201220011324U CN202487475U CN 202487475 U CN202487475 U CN 202487475U CN 2012200113241 U CN2012200113241 U CN 2012200113241U CN 201220011324 U CN201220011324 U CN 201220011324U CN 202487475 U CN202487475 U CN 202487475U
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- contact
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- moving contact
- silicon rubber
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Abstract
The utility model discloses a low-voltage fusing type disconnecting switch which comprises a base (1), a silicon rubber insulator strut (2), a knife switch mounted on the silicon rubber insulator strut (2), a fuse link (10) and a wiring board (11), wherein the knife switch comprises a moving contact (3), a fixed contact (9), two knife plates (4), a pull ring (6) and a pressure spring (13); the side surface of the moving contact (3) is provided with a moving contact concave contact surface (17), and/or the side surface of the fixed contact (9) is provided with a circular-ring concave contact surface (18); the contact surface of the knife plate (4) in contact with the moving contact (3) is provided with a front-end convex contact surface (16); a round convex contact surface (15) is arranged on the contact surface in contact with the fixed contact (9); and the low-voltage fusing type disconnecting switch also comprises an anti-arc device. The low-voltage fusing type disconnecting switch has simple structure, low processing cost and large contact area, and is convenient to use and safe and reliable; and when the switch is turned on/off, the switch does not generate electric arc, thus the service life is long.
Description
Technical field
The utility model relates to a kind of isolating switch, has been specifically related to a kind of low pressure Fuse Type isolating switch.
Background technology
Existing low pressure Fuse Type isolating switch; By mounting seat, porcelain insulator, connecting plate, go into ply-yarn drill, knife switch, fuse, the device of operating a switch and form; This unit switch is arranged on two porcelain insulators through connecting plate after with knife switch and fuse parallel connection; Knife switch is made up of insulation porcelain rod and the connecting elements that is arranged at the termination, and fuse is arranged between the connector of said insulation porcelain rod termination.For CN200720201627.9 a kind of outdoor low voltage fuse cutout is disclosed like one Chinese patent application number; Include base, be installed in static contact seat and moving contact seat on the base, and fuse link; Have the blade of groove in the middle of on described moving contact seat, being hinged with; One end of this groove is enclosed within the both sides of moving contact seat, the other end when switch closure and the both sides end face of static contact seat join, at the two ends of groove the bolt that external diameter is set with compression spring is housed; One end of compression spring withstands blade, the end that the other end withstands this blade of bolt when switch closure and static contact seat join; Fuse link is fixed between moving contact seat and the connecting plate; Static contact seat, moving contact seat and connecting plate are installed on the post insulator respectively.But this type of isolating switch has only even a bit or line contact owing to when switch closure, usually be that contact area is very little; Can not well be suitable on the circuit of low-voltage, big electric current, when working long hours, contact-making surface can be overheated; The easy burn-out contact; Therefore it is loaded down with trivial details to change fuse, exists potential safety hazard and useful life shorter, and the operation and maintenance cost is high.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, provide a kind of simple in structure, esy to use, safe and reliable, processing cost is low, contact area is big, does not have during the folding switch that electric arc produces and the low pressure Fuse Type isolating switch of long service life.
To achieve these goals; The utility model has adopted following technical scheme: low pressure Fuse Type isolating switch; Comprise base, flash guard, fuse-link, terminal block, silicon rubber insulator pillar and be installed in the knife switch on the silicon rubber insulator pillar; Knife switch comprises moving contact, fixed contact, two shoe brake knife plates, draw ring and compression spring, and the contact-making surface that described plug-in strip plate contacts with moving contact is provided with the protruding face that touches of front end, and the contact-making surface that contacts with fixed contact is provided with the circular protruding face that touches; Described moving contact side is provided with the recessed face that touches of moving contact, and/or is provided with the recessed face that touches of annular in the fixed contact side.Be provided with recessed face and the protruding face that touches of touching, make the contact area of plug-in strip plate and dynamic and static contact increase greatly, let this switch be applicable to more on the circuit of low-voltage, high electric current.It can be shapes such as oval, square, circle that above-mentioned moving contact side recessed touches face, then is the corresponding with it protruding face that touches on the plug-in strip plate.
Above-mentioned moving contact and fixed contact are installed in respectively on the corresponding silicon rubber insulator pillar; The rear end of described plug-in strip plate is contained on the fixed contact through long-neck bolt, compression spring and nut clip; The front end of plug-in strip plate is clamping draw ring; And fix through long-neck bolt and compression spring and to interconnect, the range line finger ring that draw ring and plug-in strip plate top end clamp forms the embedding clip slot that embedding is sandwiched in moving contact.
Above-mentioned flash guard comprises the preventing arc fixed contact and the preventing arc moving contact that is installed in the high-quality red copper material on the plug-in strip plate of the high-quality red copper material that is installed on the silicon rubber insulator pillar and is connected with terminal block.When having guaranteed the folding switch, flash guard can not produce electric arc, handling safety.
Above-mentioned plug-in strip plate is a spill plug-in strip plate, and spill plug-in strip plate is arranged relatively and is installed on the contact.
Rear end one side of above-mentioned plug-in strip plate is equipped with limiting plate.
Above-mentioned compression spring is nested with on the long-neck bolt in one outside, plug-in strip plate two ends, and the compression spring two ends are respectively arranged with and are used for compression spring is limited to the compression spring guard shield on the bolt.
Above-mentioned base is " ︻ " shape mounting panel; Device has three silicon rubber insulator pillars on the base; Wherein on two silicon rubber insulator pillars moving contact, fixed contact are installed respectively, another silicon rubber insulator pillar installation connection plate, terminal block is connected through fuse-link with fixed contact.
Above-mentioned fuse-link is wire or sheet metal.
Above-mentioned draw ring comprises latch nook, latch nook spring and shackle sheet, and latch nook and latch nook spring are installed on the shackle sheet, forms the self-locking drag hook.
The shape size that above-mentioned moving contact is recessed to touch face and the front end of plug-in strip plate be protruding, and to touch the face shape corresponding; It is corresponding that shape size and plug-in strip plate rear end circular protruding that described annular is recessed to touch face touched the face shape.
In the technical scheme of the utility model; Be provided with plug-in strip plate epirelief in the side of moving contact, fixed contact and touch the corresponding recessed face that touches of face; Increased the contact area between plug-in strip plate and upper static contact; Made isolating switch follow to be applicable to the circuit of the high stream of low pressure, and it need not often safeguard, increase its useful life.This isolating switch also is provided with flash guard; Mainly be because switch can produce electric arc when separating brake, combined floodgate, moving contact and plug-in strip plate are burnt out, therefore on moving contact and plug-in strip plate, be fixed with preventing arc fixed contact and preventing arc moving contact respectively; When the switch separating brake, separate behind the preventing arc moving contact; When switch closed a floodgate, the preventing arc moving contact is contact earlier, plays the effect of arc extinguishing, makes moving contact and plug-in strip plate be not easy to burn out; And draw ring and flash guard that creationary handle possesses self-locking structure comprehensively use, and this product in the past of being through with only contains draw ring or only contains the situation of flash guard.
Compared with prior art, the beneficial effect that the utlity model has:
1. knife switch and safeties (fuse-link) series connection are provided with, discharge capacity is big, and it is convenient to change fuse-link, is convenient to safety operation.
2. the range line finger ring on plug-in strip plate top; Be convenient to the regulator knife plate and contact compression spring retaining mechanism closely with last, fixed contact; And go up, fixed contact is provided with the recessed corresponding protruding face that touches that is provided with that touches two ends on face and the plug-in strip plate; All strict guarantee the plug-in strip plate contact with last, the tight of fixed contact, guaranteed can break-make big electric current.
3. set up flash guard, can not produce electric arc during the folding switch, guarantee safety operation, prolong product useful life.
Description of drawings
Fig. 1 is the sketch map of the utility model one embodiment;
Fig. 2 is the switch off state sketch map of the utility model one embodiment;
Fig. 3 is the vertical view of the knife switch of the utility model;
Fig. 4 is the plug-in strip plate medial side view of the utility model;
Fig. 5 is the sketch map of the utility model one embodiment when the plug-in strip plate is not installed;
Fig. 6 is the sketch map of another embodiment of the utility model when the plug-in strip plate is not installed.
Reference numeral: base 1, silicon rubber insulator pillar 2, moving contact 3, plug-in strip plate 4, preventing arc fixed contact 5; Draw ring 6, preventing arc moving contact 7, limiting plate 8, fixed contact 9, fuse-link 10; Terminal block 11, range line finger ring 12, compression spring 13, compression spring protective cover 14, the protruding face 15 that touches of annular; The protruding face 16 that touches of front end, the recessed face 17 that touches of moving contact, the recessed face 18 that touches of annular, long-neck bolt 19.
Embodiment
Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further specified.
Embodiment 1: shown in accompanying drawing, the low pressure Fuse Type isolating switch of the utility model comprises base 1, silicon rubber insulator pillar 2, is installed in knife switch, wire 10, terminal block 11 and flash guard on the silicon rubber insulator pillar 2.Base 1 is " ︻ " shape mounting panel; Three silicon rubber insulator pillars 2 are installed on the base 1; Wherein on two silicon rubber insulator pillars 2 moving contact 3, fixed contact 9 are installed respectively; Another silicon rubber insulator pillar 2 installation connection plates 11, terminal block 11 is connected through wire 10 with fixed contact 9.Knife switch comprises moving contact 3, fixed contact 9, two shoe brake knife plates 4, draw ring 6 and compression spring 13; Moving contact 3 sides are provided with two recessed faces 17 that touch of ellipse, and fixed contact 9 sides then are provided with the recessed face 18 that touches of annular, and moving contact 3 is installed in respectively on the corresponding silicon rubber insulator pillar 2 with fixed contact 9; Plug-in strip plate 4 is a spill plug-in strip plate 4; Spill plug-in strip plate 4 is arranged relatively and is installed on the contact; The contact-making surface of the end that plug-in strip plate 4 contacts with fixed contact 9 is the circular protruding face 15 that touches, with the contact-making surface of moving contact 3 one end in contact be two oval protruding faces of arranging side by side 16 that touch; The rear end of plug-in strip plate 4 is contained on the fixed contact 9 with nut clip through long-neck bolt 19, compression spring 13; Front end is clamping draw ring 6, and through long-neck bolt 19 and compression spring 13 fixing interconnecting, and forms the embedding clip slot that embeddings are sandwiched in moving contact 3 with range line finger ring 12 that plug-in strip plate 4 top ends clamp.One outside, rear end of plug-in strip plate 4 is equipped with a limiting plate 8.Compression spring 13 is nested with on the long-neck bolt 19 in one outside, plug-in strip plate 4 two ends, and compression spring 13 two ends are respectively arranged with and are used for compression spring 13 is limited to the compression spring guard shield 14 on the bolt.Draw ring 6 comprises latch nook, latch nook spring and shackle sheet, and latch nook and latch nook spring are installed on the shackle sheet, forms the self-locking drag hook.Flash guard comprises the preventing arc fixed contact 5 that is installed on the silicon rubber insulator pillar 2 and is connected with terminal block 11 and is installed in the preventing arc moving contact 7 on the plug-in strip plate 4 that anti-arcing contact adopts high-quality red copper material to make.
Embodiment 2: shown in accompanying drawing, the low pressure Fuse Type isolating switch of the utility model comprises base 1, silicon rubber insulator pillar 2, is installed in knife switch, sheet metal 10, terminal block 11 and flash guard on the silicon rubber insulator pillar 2.Base 1 is " ︻ " shape mounting panel; Three silicon rubber insulator pillars 2 are installed on the base 1; Wherein on two silicon rubber insulator pillars 2 moving contact 3, fixed contact 9 are installed respectively; Another silicon rubber insulator pillar 2 installation connection plates 11, terminal block 11 is connected through sheet metal 10 with fixed contact 9.Knife switch comprises moving contact 3, fixed contact 9, two shoe brake knife plates 4, draw ring 6 and compression spring 13; Moving contact 3 sides are provided with a square recessed face 17 that touches, and fixed contact 9 sides then are provided with the recessed face 18 that touches of annular, and moving contact 3 is installed in respectively on the corresponding silicon rubber insulator pillar 2 with fixed contact 9; Plug-in strip plate 4 is a spill plug-in strip plate 4, and spill plug-in strip plate 4 is arranged relatively and is installed on the contact, and the contact-making surface of the end that plug-in strip plate 4 contacts with fixed contact 9 is the circular protruding face 15 that touches, with the contact-making surface of moving contact 3 one end in contact be a square protruding face 16 that touches; The rear end of plug-in strip plate 4 is contained on the fixed contact 9 with nut clip through long-neck bolt 19, compression spring 13; Front end is clamping draw ring 6, and through long-neck bolt 19 and compression spring 13 fixing interconnecting, and forms the embedding clip slot that embeddings are sandwiched in moving contact 3 with range line finger ring 12 that plug-in strip plate 4 top ends clamp.One outside, rear end of plug-in strip plate 4 is equipped with a limiting plate 8.Compression spring 13 is nested with on the long-neck bolt 19 in one outside, plug-in strip plate 4 two ends, and compression spring 13 two ends are respectively arranged with and are used for compression spring 13 is limited to the compression spring guard shield 14 on the bolt.Draw ring 6 comprises latch nook, latch nook spring and shackle sheet, and latch nook and latch nook spring are installed on the shackle sheet, forms the self-locking drag hook.Flash guard comprises the preventing arc fixed contact 5 that is installed on the silicon rubber insulator pillar 2 and is connected with terminal block 11 and is installed in the preventing arc moving contact 7 on the plug-in strip plate 4 that anti-arcing contact adopts high-quality red copper material to make.
Claims (9)
1. low pressure Fuse Type isolating switch; Comprise base (1), fuse-link (10), terminal block (11), flash guard, silicon rubber insulator pillar (2) and be installed in the knife switch on the silicon rubber insulator pillar (2), knife switch comprises moving contact (3), fixed contact (9), two shoe brake knife plates (4), draw ring (6) and compression spring (13); The contact-making surface that plug-in strip plate (4) contacts with moving contact (3) is provided with the protruding face (16) that touches of front end; The contact-making surface that plug-in strip plate (4) contacts with fixed contact (9) is provided with the circular protruding face (15) that touches; It is characterized in that: described moving contact (3) side is provided with the recessed face (17) that touches of moving contact, and/or is provided with the recessed face (18) that touches of annular in fixed contact (9) side.
2. low pressure Fuse Type isolating switch according to claim 1 is characterized in that: described moving contact (3) and fixed contact (9) are installed in respectively on the corresponding silicon rubber insulator pillar (2); The rear end of described plug-in strip plate (4) is contained on the fixed contact (9) with nut clip through long-neck bolt (19), compression spring (13); The front end of plug-in strip plate (4) is clamping draw ring (6); And interconnect through long-neck bolt (19) and compression spring (13) are fixing, draw ring (6) forms the embedding clip slot that embedding is sandwiched in moving contact (3) with the range line finger ring (12) that plug-in strip plate (4) top end clamps.
3. low pressure Fuse Type isolating switch according to claim 1 is characterized in that: described flash guard comprises and is installed in that silicon rubber insulator pillar (2) is gone up and the preventing arc fixed contact (5) of the high-quality red copper material that is connected with terminal block (11) and be installed in the preventing arc moving contact (7) of the high-quality red copper material on the plug-in strip plate (4).
4. low pressure Fuse Type isolating switch according to claim 1 is characterized in that: described plug-in strip plate (4) is a spill plug-in strip plate (4), and spill plug-in strip plate (4) is arranged relatively and is installed on the contact.
5. low pressure Fuse Type isolating switch according to claim 1 is characterized in that: rear end one side of described plug-in strip plate (4) is equipped with limiting plate (8).
6. low pressure Fuse Type isolating switch according to claim 1; It is characterized in that: described compression spring (13) is nested with on the long-neck bolt (19) in one outside, plug-in strip plate (4) two ends, and compression spring (13) two ends are respectively arranged with and are used for compression spring (13) is limited to the compression spring guard shield (14) on the bolt.
7. low pressure Fuse Type isolating switch according to claim 1; It is characterized in that: described base (1) is gone up device has three silicon rubber insulator pillars (2); Moving contact (3), fixed contact (9) wherein are installed respectively on two silicon rubber insulator pillars (2); Another silicon rubber insulator pillar (2) installation connection plate (11), terminal block (11) is connected through fuse-link (10) with fixed contact (9).
8. according to claim 2 or 7 described low pressure Fuse Type isolating switches, it is characterized in that: described fuse-link (10) is wire or sheet metal.
9. low pressure Fuse Type isolating switch according to claim 1 is characterized in that: the shape size that described moving contact is recessed to touch face (17) and the front end of plug-in strip plate (4) be protruding, and to touch face (16) shape corresponding; It is corresponding that shape size and plug-in strip plate (4) rear end circular protruding that described annular is recessed to touch face (18) touched face (15) shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200113241U CN202487475U (en) | 2012-01-12 | 2012-01-12 | Low-voltage fusing type disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200113241U CN202487475U (en) | 2012-01-12 | 2012-01-12 | Low-voltage fusing type disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487475U true CN202487475U (en) | 2012-10-10 |
Family
ID=46961879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200113241U Expired - Fee Related CN202487475U (en) | 2012-01-12 | 2012-01-12 | Low-voltage fusing type disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487475U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436955A (en) * | 2012-01-12 | 2012-05-02 | 广西和谐电力科技有限公司 | Low-voltage fusing type isolating switch |
| CN105761997A (en) * | 2016-04-05 | 2016-07-13 | 宁波鹿鼎电子科技有限公司 | Isolation switch |
| CN107068427A (en) * | 2017-02-14 | 2017-08-18 | 国网新疆电力公司伊犁供电公司 | Low voltage isolation switch |
-
2012
- 2012-01-12 CN CN2012200113241U patent/CN202487475U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436955A (en) * | 2012-01-12 | 2012-05-02 | 广西和谐电力科技有限公司 | Low-voltage fusing type isolating switch |
| CN105761997A (en) * | 2016-04-05 | 2016-07-13 | 宁波鹿鼎电子科技有限公司 | Isolation switch |
| CN107068427A (en) * | 2017-02-14 | 2017-08-18 | 国网新疆电力公司伊犁供电公司 | Low voltage isolation switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20121010 Termination date: 20200112 |