CN208460699U - A kind of Combined switch of circuit breaker - Google Patents

Abstract

The utility model relates to fuse switch technical fields, in particular a kind of Combined switch of circuit breaker, including fuse tube, one end of fuse tube is connected with contact block, the side of upper contact block and be located at fuse tube on the outside of be connected with upper contact head, the other end of fuse tube is connected with lower contact, and the side of lower contact is provided with fusible link, the end of fusible link is connected with captive blot, and the side of captive blot is connected with lower contact block；The side of upper contact head is welded with operation ring, the other side of upper contact head is welded with several closure blocks, the side of lower contact is welded with convex block, the other side of lower contact is welded with several locking blocks, the side of captive blot offers wire hole, the bottom end of captive blot is connected with pillar, and the side of pillar offers socket, and the inside of socket is connected with split pin；The utility model avoids fusible link from, around breaking, also captive blot being avoided to fall by screw thread；It can be carried out large range of length adjustment simultaneously, so that replacement is convenient in time, be powered high-efficient.

Description

A kind of Combined switch of circuit breaker

Technical field

The utility model relates to fuse switch technical field, specially a kind of Combined switch of circuit breaker.

Background technique

Fuse (fuse) refers to when electric current is more than specified value, so that melt is fused with the heat that itself is generated, disconnects electricity A kind of electric appliance on road.Fuse is according to electric current be more than specified value for a period of time after, keep melt molten with its own heat generated Change, so that circuit be made to disconnect；With a kind of current protector made of this principle.Fuse is widely used in high and low voltage electric distribution It is using most common protection device as the protector of short circuit and overcurrent in system and control system and electrical equipment One of, the wherein abnormal fusing of fusible link in the drop type fuse tube in fuse switch switch, with the quality of fuse Have outside the Pass, in fixed fuse, bolt need to be tightened, fuse end rotate with the rotation of bolt it is stranded, can not when replacing fuse Control force size easily makes fusible link loosen or be forced through tight；The fusion tube that the same size need to be found when the tube body failure that fuses is logical It crossing operating stick to be replaced, however continues to restore after powering off, it is identical to find model in the short time, residential electricity consumption is influenced, In consideration of it, it is proposed that a kind of Combined switch of circuit breaker.

Utility model content

The purpose of this utility model is to provide a kind of Combined switch of circuit breaker, mentioned above in the background art to solve The problem of fusible link is matched by the same specification difficulty that multiple thread strands and fuse tube are twisted into two parts in bolt locking, is replaced low efficiency.

To achieve the above object, the utility model provides the following technical solutions:

A kind of Combined switch of circuit breaker, including fuse tube, one end of the fuse tube are connected with contact block, the upper contact block Side and be located on the outside of the fuse tube and be connected with upper contact head, the other end of the fuse tube is connected with lower contact, under described The side of contact is provided with fusible link, and the end of the fusible link is connected with captive blot, the side connection of the captive blot There is lower contact block；

The side of the upper contact head is welded with operation ring, and the other side of the upper contact head is welded with several closure blocks, described The side of lower contact is welded with convex block, and the other side of the lower contact is welded with several locking blocks, the side of the captive blot Offer wire hole, the bottom end of the captive blot is connected with pillar, and the side of the pillar offers socket, the socket it is interior Portion is connected with split pin.

Preferably, the fuse tube is hollow tubular structure and one end is equipped with screw thread, the fuse tube and the upper contact block It is threadedly coupled.

Preferably, the upper contact head and the lower contact are open type cylinder ring, and several closure blocks are symmetrical The upper contact head opening both ends and be bolted to connection, several locking blocks are symmetrically distributed in the lower contact Opening both ends are simultaneously bolted to connection.

Preferably, the fusible link passes through the inside of the fuse tube, and the fusible link and the wire hole are mating.

Preferably, the bottom end of the captive blot is equipped with screw thread, and the captive blot is structure as a whole with the pillar.

Preferably, the side of the lower contact block offers counterbore, and the bottom of the counterbore offers threaded hole, the counterbore Side open up fluted, the captive blot is threadedly coupled with the threaded hole, the internal diameter of the counterbore and the anti-fall spiral shell The upper end outer diameter of bolt is identical.

Preferably, the other side of the lower contact block is connected with spring pressuring plate, and the spring pressuring plate and the fusible link are close Fitting, the lower contact block and the convex block are hinged.

Compared with prior art, the utility model has the beneficial effects that

1, Combined switch of circuit breaker, by the captive blot of setting, so that fusible link passes through in the wire hole of captive blot And be limited in counterbore, fixed captive blot is limited in the inside of lower contact block by split pin, this improvement avoids fusible link quilt Screw thread also avoids captive blot from falling around breaking.

2, the Combined switch of circuit breaker by being provided with upper contact head and lower contact at the both ends of fuse tube, and passes through movement The position of upper contact head and lower contact carries out large range of length adjustment to match various sizes of fuse tube so that replacement and When it is convenient, be powered high-efficient.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the upper contact head and lower structure of contact terminal schematic diagram in the utility model；

Fig. 3 is the captive blot structural schematic diagram in the utility model；

Fig. 4 is the lower contact block side structural schematic diagram in the utility model.

In figure: 1, fuse tube；2, upper contact block；3, upper contact head；30, ring is operated；31, closure blocks；4, lower contact；40, convex block； 41, locking block；5, fusible link；6, captive blot；60, wire hole；61, pillar；610, socket；62, split pin；7, lower contact block；70, Counterbore；700, groove；71 threaded holes；72, spring pressuring plate.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Fig. 1-4 is please referred to, the utility model provides a kind of technical solution:

A kind of Combined switch of circuit breaker, as shown in Figure 1 and Figure 4, including fuse tube 1, one end of fuse tube 1 are connected with touching Block 2, the side of upper contact block 2 and be located at fuse tube 1 on the outside of be connected with upper contact head 3, the other end of fuse tube 1 is connected with lower contact 4, The side of lower contact 4 is provided with fusible link 5, and the end of fusible link 5 is connected with captive blot 6, and the side of captive blot 6 is connected with Lower contact block 7.

Specifically, the upper contact block 2 of the present embodiment, upper contact head 3 and lower contact 4 are equal metal material, convenient for conduction.

Specifically, the captive blot 6 and pillar 61 of the present embodiment form for overall processing, make its stabilized structure, it is prolonged resistance to With.

Further, fuse tube 1 is hollow tubular structure and one end is equipped with screw thread, and fuse tube 1 and upper 2 screw thread of contact block connect It connects.

In addition to this, the other side of lower contact block 7 is connected with spring pressuring plate 72, and spring pressuring plate 72 is fitted closely with fusible link 5, So that making fuse tube fall separation by the elasticity of spring pressuring plate 72, lower contact block 7 is hinged with convex block 40, is convenient for when fuse failure Fixed and rotation.

In specific implementation, due to fuse tube easy break-down, and replacement in time is needed, guarantees that residential electricity consumption is unimpeded, in order to It avoids the fuse tube for finding model of the same race from spending the time, causes replacement low efficiency, length of stalling for time, the present inventor is to upper contact head 3 It is made improvements with lower contact 4, as a kind of preferred embodiment, as shown in Fig. 2, the side of upper contact head 3 is welded with operation ring 30, on The other side of contact 3 is welded with several closure blocks 31, and the side of lower contact 4 is welded with convex block 40, the other side welding of lower contact 4 There are several locking blocks 41.

Specifically, upper contact head 3 and lower contact 4 are open type cylinder ring, several closure blocks 31 are symmetrically distributed in upper contact head 3 Opening both ends and be bolted to connection, several locking blocks 41 are symmetrically distributed in the opening both ends of lower contact 4 and pass through spiral shell Bolt is fixedly connected, so that the fuse tube of different sizes and length is capable of fixing, convenient for replacement in time.

In specific implementation, since fusible link need to be fixed by bolts on lower contact block, in order to avoid fuse is by the spiral shell of bolt Line rotates disconnection, and the present inventor makes improvements captive blot 6 and lower contact block 7, as a kind of preferred embodiment, such as Fig. 3 and Fig. 4 Shown, the side of captive blot 6 offers wire hole 60, and the bottom end of captive blot 6 is connected with pillar 61, and the side of pillar 61 opens up There is socket 610, the inside of socket 610 is connected with split pin 62.

Specifically, the split pin 62 of the present embodiment uses, Q235 steel is made and diameter is 2mm, guarantee its with high resiliency and Intensity convenient for engaging and is fixed.

Further, fusible link 5 passes through the inside of fuse tube 1, plays protective action, fusible link 5 is matched with 60 grafting of wire hole Close, avoid fusible link 5 from contacting screw thread and by around disconnected.

In addition to this, the bottom end of captive blot 6 is equipped with screw thread, and captive blot 6 is structure as a whole with pillar 61, outside wire hole 60 Side does not set screw thread, and protection is contacted with the winding of fusible link 5 and do not damaged.

It is worth noting that, the side of lower contact block 7 offers counterbore 70, the bottom of counterbore 70 offers threaded hole 71, sinks The side in hole 70 opens up fluted 700, places fusible link 5, avoids it from being weighed wounded by the head of captive blot 6, captive blot 6 and spiral shell Pit 71 is threadedly coupled, and the internal diameter of counterbore 70 and the upper end outer diameter of captive blot 6 are identical, so that captive blot 6 is with fusible link 5 Enter in counterbore 70 together, by the grafting of split pin 62 and socket 610, is fixed on fusible link 5 in counterbore 70.

The Combined switch of circuit breaker of the present embodiment passes through fuse tube 1 during installation, fusible link 5, and fixed with contact block 2 One end is fitted in the other end of fusible link 5 on spring pressuring plate 72, and passes through wire hole 60 and be wrapped on captive blot 6, by anti- It falls bolt 6 and the rotation of threaded hole 71 is fixed, so that fusible link 5 is pressed together in counterbore 70, be inserted into socket with split pin 62 In 610, realize that the limit of captive blot 6 is fixed；When replacing the fuse tube 1 of different model, upper contact head 3 and lower touching need to be only moved First 4 position makes upper contact head 3, fuse tube 1 and lower contact 4 be fixed as one by the sealed closure blocks 31 of bolt and locking block 41 It rises；The utility model avoids fusible link from, around breaking, also captive blot being avoided to fall, while can be carried out large range of length by screw thread Adjustment is powered high-efficient so that replacement is convenient in time.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. a kind of Combined switch of circuit breaker, including fuse tube (1), it is characterised in that: one end of the fuse tube (1) is connected with Contact block (2), the side of the upper contact block (2) and be located at the fuse tube (1) on the outside of be connected with upper contact head (3), the fuse tube (1) the other end is connected with lower contact (4), and the side of the lower contact (4) is provided with fusible link (5), the fusible link (5) End is connected with captive blot (6), and the side of the captive blot (6) is connected with lower contact block (7)；

The side of the upper contact head (3) is welded with operation ring (30), and the other side of the upper contact head (3) is welded with several closure blocks (31), the side of the lower contact (4) is welded with convex block (40), and the other side of the lower contact (4) is welded with several locking blocks (41), the side of the captive blot (6) offers wire hole (60), and the bottom end of the captive blot (6) is connected with pillar (61), The side of the pillar (61) offers socket (610), and the inside of the socket (610) is connected with split pin (62).

2. Combined switch of circuit breaker according to claim 1, it is characterised in that: the fuse tube (1) is hollow tubular knot Structure and one end are equipped with screw thread, and the fuse tube (1) is threadedly coupled with the upper contact block (2).

3. Combined switch of circuit breaker according to claim 1, it is characterised in that: the upper contact head (3) and the lower contact It (4) is open type cylinder ring, several closure blocks (31) are symmetrically distributed in the opening both ends of the upper contact head (3) and pass through Bolt is fixedly connected, and several locking blocks (41) are symmetrically distributed in the opening both ends of the lower contact (4) and are consolidated by bolt Fixed connection.

4. Combined switch of circuit breaker according to claim 1, it is characterised in that: the fusible link (5) passes through the fusing The inside of (1) is managed, the fusible link (5) and the wire hole (60) are mating.

5. Combined switch of circuit breaker according to claim 1, it is characterised in that: the bottom end of the captive blot (6) is equipped with Screw thread, the captive blot (6) are structure as a whole with the pillar (61).

6. Combined switch of circuit breaker according to claim 1, it is characterised in that: the side of the lower contact block (7) offers The bottom of counterbore (70), the counterbore (70) offers threaded hole (71), and the side of the counterbore (70) opens up fluted (700), the captive blot (6) is threadedly coupled with the threaded hole (71), the internal diameter and the anti-fall spiral shell of the counterbore (70) The upper end outer diameter of bolt (6) is identical.

7. Combined switch of circuit breaker according to claim 1, it is characterised in that: the other side of the lower contact block (7) is clamped Have spring pressuring plate (72), the spring pressuring plate (72) fits closely with the fusible link (5), the lower contact block (7) with it is described convex Block (40) is hinged.