CN213277996U - Fuse type isolating switch - Google Patents

Abstract

The utility model discloses a fuse type isolating switch, which comprises a base with a contact seat, a flip cover movably connected on the base and three fuse links arranged on the inner side of the flip cover, wherein when the flip cover is closed, the contacts on the fuse links are contacted with the contact seat; an arc extinguishing chamber is arranged in the base and comprises a shell with an opening at the front part and a plurality of slots correspondingly arranged on two inner side walls and a plurality of arc extinguishing grid pieces inserted into the slots one by one, jacks are arranged on the rear wall of the shell and correspond to the slots, positioning pieces extending into the jacks are arranged on the arc extinguishing grid pieces, and the positioning pieces are tightly matched in the jacks; the outside shaping of shell has the constant head tank that the socket seted up downwards, and the shaping has the location card strip of pegging graft complex with the constant head tank in the base, and the location card strip inserts the constant head tank by the socket. The utility model discloses well fuse formula isolator's is rational in infrastructure, and the explosion chamber loading and unloading is convenient in it, and explosion chamber equipment production is also very convenient, is favorable to improving work efficiency.

Description

Fuse type isolating switch

Technical Field

The utility model relates to a fuse formula isolator belongs to protection switch structural design field.

Background

Fuse formula isolator is a switchgear that carries out the protection to consumer through the fuse-link, and this isolator requires to break and close a floodgate simple rapidly in the use, is used in distribution system usually, realizes the protection to the equipment among the distribution lines to provide obvious disconnection point when the maintenance and ensure staff's personal safety, protect whole circuit safety. An arc extinguish chamber is usually arranged in the existing fuse type isolating switch and used for rapidly extinguishing electric arcs generated in breaking, however, the arc extinguish chamber is generally fixed on a base through two screws in the prior art, which brings inconvenience to the installation and the disassembly of the arc extinguish chamber; in addition, when the arc extinguishing chamber is assembled in the prior art, the positioning pieces are arranged on two sides of the arc extinguishing grid piece, and therefore the arc extinguishing grid piece is fixed in the shell by riveting the positioning pieces on the two sides during the assembly, and the assembly operation is also inconvenient.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a rational in infrastructure fuse formula isolator, its upper arc extinguishing chamber loading and unloading are convenient, and arc extinguishing chamber equipment production is also more convenient.

Realize the utility model discloses the technical scheme of purpose is:

a fuse type isolating switch comprises a base provided with a contact seat, a turnover cover movably connected to the base and three fuse links arranged on the inner side of the turnover cover, wherein when the turnover cover is closed, a contact on each fuse link is in contact with the corresponding contact seat; an arc extinguishing chamber is arranged in the base and comprises a shell with an opening at the front part and a plurality of slots correspondingly arranged on two inner side walls and a plurality of arc extinguishing grid pieces inserted into the slots one by one, jacks are arranged on the positions, corresponding to the slots, of the back wall of the shell, positioning pieces extending into the jacks are arranged on the arc extinguishing grid pieces, and the positioning pieces are tightly matched in the jacks; the outer shaping of shell has the constant head tank that the socket seted up downwards, the shaping has with the base in the constant head tank grafting complex location card strip, the location card strip by the socket inserts the constant head tank.

In the above technical scheme, the positioning sheet is formed with an open slot.

In the technical scheme, the flip cover is provided with a rectangular through hole at a position opposite to each fuse link, and a transparent plate is arranged at the rectangular through hole.

In the technical scheme, one end of the flip cover is fixed with a connecting plate through a screw, the connecting plate is a metal plate, a connecting column is fixed on the connecting plate, and a connecting notch which is movably matched with the connecting column is formed in the side wall of the base.

In the above technical scheme, a handle is fixed at one end of the flip cover, which is far away from the connecting plate.

In the above technical solution, the flip cover and the handle are integrally formed.

In the technical scheme, the two opposite side walls of the base are respectively provided with the through grooves for communicating the inner cavity of the base with the outside.

The utility model discloses has positive effect: the fuse type isolating switch has reasonable structure, the arc extinguish chamber is directly arranged in the base in an inserting mode when the arc extinguish chamber is arranged, and the arc extinguish chamber is positioned in a mode of matching the positioning groove with the positioning clamping strip, so that the arc extinguish chamber is convenient to install and disassemble; in addition, set up the slot on the shell inner wall, through with in the arc extinguishing bars piece inserts the slot to in the jack (this a spacer inserts and carries out the riveting after corresponding the jack) of a spacer tight-fitting on the shell through the rear side realizes the equipment of explosion chamber, and equipment production convenient and fast is favorable to improving production efficiency.

Drawings

Fig. 1 is a perspective view of a fuse type disconnecting switch according to the present invention when a flip cover is closed;

FIG. 2 is a block diagram of the fused disconnect switch of FIG. 1 with the flip cover open;

FIG. 3 is a structural diagram of the arc-extinguishing chamber of the present invention;

FIG. 4 is an exploded view of the arc chute of FIG. 3;

FIG. 5 is a structural diagram of the base of the present invention;

FIG. 6 is a structural diagram of the connecting member of the present invention;

fig. 7 is a cross-sectional view of a medium fuse type disconnector according to the present invention;

FIG. 8 is a structural diagram of the middle clamping plate of the present invention;

fig. 9 is a structural view of the fuse link of the present invention;

FIG. 10 is a structural diagram of the flip cover, the clamping member and the fuse link of the present invention;

fig. 11 is an enlarged view of a portion a in fig. 10.

The reference symbols shown in the figures are: 1-a base; 10-convex edge; 11-positioning the clamping strip; 12-a connection slot; 13-a through slot; 2-turning over the cover; 3-a fuse link; a 31-T hook; 4-an arc extinguishing chamber; 40-a housing; 41-slot; 42-arc extinguishing grid sheet; 43-a jack; 44-a locating plate; 441-open slots; 45-positioning grooves; 5-a transparent plate; 6-connecting plates; 61-connecting column; 7-a handle; 01-card board; 011-card slot; 02-a stop; 021-a stopper; 022-turning part; 023-connecting shaft.

Detailed Description

The specific structure of the middle fuse type isolating switch of the present invention is described below with reference to the attached drawings of the specification:

a fuse type disconnecting switch is disclosed, as shown in figures 1 to 6, and comprises a base 1 provided with a contact seat, a flip cover 2 movably connected to the base 1 and three fuse links 3 arranged on the inner side of the flip cover 2, wherein when the flip cover 2 is closed, the contacts on the fuse links 3 are contacted with the corresponding contact seat; an arc extinguishing chamber 4 is arranged in the base 1, the arc extinguishing chamber 4 comprises a shell 40 which is provided with an opening at the front part and a plurality of slots 41 correspondingly arranged on two inner side walls and a plurality of arc extinguishing grid plates 42 correspondingly inserted in the slots 41 one by one, a jack 43 is arranged on the back wall of the shell 40 corresponding to each slot 41, a positioning plate 44 extending into the jack 43 is arranged on each arc extinguishing grid plate 42, and the positioning plate 44 is tightly matched in the jack 43; the outside shaping of shell 40 has the constant head tank 45 that the socket seted up downwards, the shaping has in the base 1 with constant head tank 45 grafting complex location card strip 11, location card strip 11 by the socket inserts constant head tank 45. The fuse type isolating switch has reasonable structure, the arc extinguish chamber is directly arranged in the base in an inserting mode when the arc extinguish chamber is arranged, and the arc extinguish chamber is positioned in a mode of matching the positioning groove with the positioning clamping strip, so that the arc extinguish chamber is convenient to install and disassemble; in addition, set up the slot on the shell inner wall, through with in the arc extinguishing bars piece inserts the slot to in the jack (this a spacer inserts and carries out the riveting after corresponding the jack) of a spacer tight-fitting on the shell through the rear side realizes the equipment of explosion chamber, and equipment production convenient and fast is favorable to improving production efficiency.

In actual operation, in order to strengthen the fixed of explosion chamber, can set up the boss on the locator card strip inner wall set up in the constant head tank be suitable for with the recess of boss card cooperation is passed through when locator card strip 11 and constant head tank 45 peg graft and target in place the boss with the recess cooperatees and strengthens the connection.

In this embodiment, the positioning plate 44 is formed with an open slot 441, and the positioning plate is deformed and tightened in the insertion hole more easily by riveting the open slot, which is beneficial to assembly.

In this embodiment, rectangular through holes are formed in the flip cover 2 at positions opposite to the fuse links 3, a transparent plate 5 is installed in the rectangular through holes, and through the arrangement of the transparent plate 5, after the fuse links are fused, the state can be directly checked through the transparent plate without opening the flip cover.

Further, 2 one ends of flip have connecting plate 6 through the screw fixation, connecting plate 6 is the metal sheet be fixed with spliced pole 61 on the connecting plate 6, be equipped with on base 1's the lateral wall with spliced pole 61 clearance fit's connection notch 12, through changing into the connecting plate 6 of metal material and difficult fracture, among the prior art the connecting plate be the plastics material usually and with flip integrated into one piece, whole flip all need be changed after the connecting plate fracture, is unfavorable for practicing thrift use cost.

Furthermore, a handle 7 is fixed at one end of the turning cover 2 far away from the connecting plate 6, and the turning cover 2 is closed after being conveniently turned and opened by holding the handle; more specifically, the flip cover 2 and the handle 7 are integrally formed, so that the assembly and connection process between the flip cover and the handle is saved, and the flip cover and the handle are directly formed by a pair of dies in an injection molding mode.

In this embodiment, all the shaping has logical groove 13 with base 1 inner chamber and external intercommunication on the relative both sides wall of base 1, can play the radiating action through leading to the groove to accelerate giving off of steam in the base.

In this embodiment, the upper portions of the two opposite ends of the base 1 are provided with convex edges 10 protruding outwards, and each convex edge 10 is provided with two screw through holes. By adopting the structure, when the fuse-type isolating switch is installed, the fuse-type isolating switch sinks into the installation hole on the installation plate, is lapped at the edge of the installation hole through the convex edge and is fixed through the screw, and the counter bore installation is realized.

Further refinements are made as the above embodiment: referring to fig. 7 to 11, two clamping plates 01 are axially installed in the rectangular through hole at intervals along the fuse link 3, a clamping groove 011 is arranged on the same side of the two clamping plates 01, T-shaped hook portions 31 at the upper parts of two ends of the fuse link 3 are respectively clamped with the clamping grooves 011 on the two clamping plates 01, and a stop member 02 for preventing the T-shaped hook portions 31 from disengaging from the clamping grooves 011 is arranged on the inner side of the flip cover 2; the stop part 02 is formed by vertically connecting a stop part 021 and a turning part 022, and is connected with the turnover cover 2 into a whole through a connecting shaft 023 at a corner, and the stop part 021 extends towards the direction of the slot 011. By adopting the structure, two clamping plates are installed in the rectangular through holes, the clamping plate 01 can be fixedly installed in a conventional fixing mode such as clamping connection or screw fixation, when the fuse-link is installed, the T-shaped hook parts on the upper parts of two ends of the fuse-link are correspondingly clamped into the clamping grooves 011 of the clamping parts, the T-shaped hook parts are prevented from being separated from the clamping grooves 011 on the clamping plate through the stopping part 021 stopping limitation on the stopping part 02, the reliability of installation of the fuse-link is ensured, when the fuse-link is detached, the finger presses the turning part 022 to enable the stopping part 02 to rotate by an angle around the connecting shaft so that the stopping part does not block the T-shaped hook parts on the fuse-link from being separated from the clamping grooves, then the turning part is released after the fuse-link is detached, the stopping part resets under the action of self elasticity, the installation and detachment process of the whole fuse.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims (7)

1. A fuse type isolating switch comprises a base (1) provided with a contact seat, a turnover cover (2) movably connected to the base (1) and three fuse links (3) arranged on the inner side of the turnover cover (2), wherein when the turnover cover (2) is closed, contacts on the fuse links (3) are contacted with the corresponding contact seat; the arc extinguishing device is characterized in that an arc extinguishing chamber (4) is arranged in the base (1), the arc extinguishing chamber (4) comprises a shell (40) which is provided with an opening at the front part and a plurality of slots (41) are correspondingly arranged on two inner side walls, and a plurality of arc extinguishing grid plates (42) which are correspondingly inserted into the slots (41) one by one, inserting holes (43) are arranged on the rear wall of the shell (40) and correspond to the slots (41), positioning plates (44) which extend into the inserting holes (43) are arranged on the arc extinguishing grid plates (42), and the positioning plates (44) are tightly matched in the inserting holes (43); the outside shaping of shell (40) has constant head tank (45) that the socket was seted up downwards, the shaping has in base (1) with constant head tank (45) grafting complex locator card strip (11), locator card strip (11) by the socket inserts constant head tank (45).

2. A fused disconnect switch in accordance with claim 1 wherein the spacer (44) is formed with an open slot (441).

3. A fused disconnector according to claim 2, characterized in that said flip-open lid (2) is provided with a rectangular through-hole in a position opposite to each fuse-link (3), said rectangular through-hole being provided with a transparent plate (5).

4. A fuse-type disconnector according to claim 3, characterized in that one end of the flip cover (2) is fixed with a connecting plate (6) by screws, the connecting plate (6) is a metal plate, a connecting column (61) is fixed on the connecting plate (6), and a connecting notch (12) which is movably matched with the connecting column (61) is arranged on the side wall of the base (1).

5. A fused disconnect switch in accordance with claim 4 wherein a handle (7) is secured to the flip (2) at an end remote from the connecting plate (6).

6. A fused disconnect switch in accordance with claim 5 wherein the flip cover (2) is integrally formed with the handle (7).

7. A fused disconnect switch as defined in any of claims 1-6 wherein there are through slots (13) formed in both of the opposite side walls of the base (1) to communicate the internal cavity of the base (1) with the outside.

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