Isolating switch

Abstract

An isolating switch relates to the technical field of low-voltage apparatuses. The shell is internally provided with a handle which is rotatably arranged in the shell and a handle which is rotatably arranged in the shell; the contact support is linked with the handle and can slide relative to the height direction of the shell; the at least one contact bridge is provided with a moving contact, and the contact bridge is movably assembled on the contact support; the wiring assemblies are arranged at the two ends of the shell, each wiring assembly comprises a wiring frame, the rear end of each wiring frame extends towards the contact support to form a contact plate, a static contact is arranged on each contact plate, and the contact supports can be driven by external force to enable the moving contacts to be in contact with or separated from the static contacts, so that the static contacts are integrally formed by directly utilizing the wiring frames. The connection reliability of the static contact and the wiring frame is ensured, and the reliable connection of the static contact and the wire can be ensured only by ensuring the reliable connection of the wire and the wiring frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field, concretely relates to a disconnecting switch. BACKGROUND

[0002] The disconnecting switch is a common power equipment, and is used for isolation in the circuit. The working principle and structure are relatively simple, but due to the large use quantity, the influence on the design, establishment and safe operation of the substation and power plant is larger, so the working reliability requirement is extremely high.

[0003] The disconnecting switch generally adopts one dynamic contact bridge and a set of static contact head cooperation, and the structure that one wiring frame is configured with one screw in the wiring assembly. When a plurality of static contact heads and a plurality of dynamic contact bridges cooperate, the current that can pass is larger.

[0004] And the conventional static contact head is fixedly connected with the wiring board, when fixedly connecting the lead wire, the lead wire and the wiring board are fixedly connected by moving the wiring frame driven by screwing the screw, and in order to ensure good conductive performance, the static contact head and the external lead wire are not in good contact on the wiring board, but the static contact head and the wiring board can be in poor contact, and the wiring board and the lead wire can also be loose, so the design has many hidden dangers, and the reliability of the disconnecting switch is affected. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a disconnecting switch.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0007] A disconnecting switch, comprising a shell, the shell is provided with:

[0008] A handle rotatably arranged in the shell;

[0009] A contact head support is arranged in the shell, and the contact head support is slidably arranged in the height direction of the shell;

[0010] At least one contact bridge is provided with a dynamic contact head, and the contact bridge is movably assembled on the contact head support;

[0011] A wiring assembly is arranged at both ends of the shell, and the wiring assembly comprises a wiring frame, the rear end of the wiring frame extends to the contact head support to form a contact head plate, and the contact head plate is provided with a static contact head,

[0012] And the contact head support can be contacted or separated from the static contact head under the action of external force.

[0013] The wiring frame has a threading space for threading a wire, a threaded hole is arranged at the upper end of the wiring frame, a bolt is arranged at the threaded hole and forms a threaded cooperation with the threaded hole, and a wire pressing plate is arranged in the threading space and is fixedly connected with the bolt.

[0014] The two sides of the wire pressing plate are downwardly inclined to form side plates.

[0015] The side walls on the two sides of the wiring frame are provided with guide notches, the side plates partially pass through the guide notches, and the wire pressing plate can be clamped with the bottom plate of the wiring frame under the action of an external force.

[0016] The two sides of the bottom plate are provided with inclined surfaces matched with the side plates.

[0017] The rear end of the bottom plate and / or the top plate of the wiring frame is extended to form a contact plate.

[0018] The contact plate is two and is arranged in parallel, and the distance between the two contact plates is greater than the moving distance of the contact support.

[0019] The contact support is provided with a mounting hole, the contact bridge passes through the mounting hole, and an elastic member is further arranged between the contact bridge and the contact support.

[0020] The elastic member is a spring piece.

[0021] The utility model discloses the beneficial effects: directly utilize wiring frame integrated static contact, guarantee static contact and the connection reliability of wiring frame, only need to guarantee the reliable connection of wire and wiring frame, can guarantee the reliable connection of static contact and wire. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the front view of the utility model.

[0023] Figure 2 It is the structure schematic view of the utility model.

[0024] Figure 3 It is the front view of the wiring assembly of the utility model.

[0025] Figure 4 It is the structure schematic view of the wiring assembly of the utility model.

[0026] Figure 5 It is the structure schematic view of the wiring frame of the utility model. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0029] As shown in Figure 1 and Figure 2 The utility model discloses a disconnecting switch, it includes the casing 100, the casing is formed by two half casing splicing, forms corresponding installation space between two, be equipped with the handle 200 that can rotate setting in the casing 100, contact support and wiring assembly in the casing 100, wherein contact support is equipped with contact bridge.

[0030] Among them, contact support 300, with the handle 200 linkage setting, and can be relative casing 100's height direction slip, the contact support is a long strip structure, its lower end is equipped with a plurality of mounting hole position, is used for supporting fixed contact bridge, its upper end is equipped with the fitting piece that is linked with the handle, the fitting piece can be the linkage column 310 that cooperates with the handle, simultaneously handle is equipped with the clamping groove that is matched with linkage column, linkage column is clamped in clamping groove, when handle rotates, the linkage wall of both sides of clamping groove, will respectively drive contact support to move upwards or downwards, in other some embodiments, also can set up the groove structure on the contact support, set up the linkage rod in the groove structure on the handle, utilize handle rotation, drive contact support to move up and down.

[0031] At least one contact bridge 400, which is equipped with a movable contact, is movably assembled on the contact support 300, wherein the movable contact refers to a silver contact in the embodiment. The contact bridge is a bridge structure, which can be contacted with the wiring assembly at both ends under the driving of the contact support.

[0032] As shown in Figure 3 , Figure 4 and Figure 5As shown, the wiring assembly 600 is arranged at both ends of the shell 100, and the wiring assembly 600 comprises a wiring frame 610, a wire pressing plate and a bolt, wherein the bolt is fixedly connected with the wire pressing plate, the bolt is in threaded cooperation with the wiring frame, and the bolt can drive the wire pressing plate to move downward, the rear end of the wiring frame 610 extends to the direction of the contact support 300 to form a contact plate 614, the contact plate 614 is provided with a static contact, and the contact support 300 can be driven by external force to make the dynamic contact and the static contact contact or separate. The contact plate and the wiring frame are integrally formed, thereby ensuring the connection reliability and eliminating the need for additional ways to fix the contact plate and the wiring plate.

[0033] The wiring frame 610 has a wire passing space 617 for the wire to pass through, the upper end of the wiring frame 610 is provided with a threaded hole 618, the threaded hole 618 is provided with a bolt 620 in threaded cooperation, and the wire passing space 617 is provided with a wire pressing plate 630, and the wire pressing plate 630 is fixedly connected with the bolt 620.

[0034] The wire is arranged in the wire passing space and is driven by the bolt to move the wire pressing plate downward, thereby pressing the wire between the wire pressing plate and the bottom plate and firmly fixing the wire.

[0035] Meanwhile, the wiring frame is formed by multiple bending of a metal piece, and the whole is in a rectangular shape, specifically, the wiring frame is formed by bending two side walls, a bottom plate connecting the side walls, and two stacked top plates, and the contact plate can extend outward from any one of the top plates.

[0036] The two sides of the wire pressing plate 630 are inclined downward to form side plates 631, so that the bottom of the wire pressing plate is in a dovetail shape, and in some embodiments, the bottom of the wire pressing plate can also be in a circular arc shape, so that the wire pressing plate can better contact the wire, and the side plates on both sides can gather the wire and limit the movement of the wire, thereby effectively improving the connection reliability of the wire and the wiring frame.

[0037] The side walls 611 on both sides of the wiring frame 610 are provided with guide notches 615, the side plates 631 are partially arranged through the guide notches 615, and the wire pressing plate 630 can be clamped with the bottom plate 613 of the wiring frame 610 under the action of external force.

[0038] A corresponding position in the shell is provided with a sink to avoid the downward movement of the side plate.

[0039] The bottom plate 613 is provided with inclined surfaces 616 on both sides matched with the side plates 631, the design of the inclined surfaces can avoid damage to the side plates by the sharp ends on both sides of the bottom plate, and can also ensure that the two sides are in close contact. As Figure 4 As shown, it is the maximum moving distance of the wire pressing plate, at this time, the inner wall of the side plate of the wire pressing plate is in contact with the inclined surface to limit the continuous downward movement of the wire pressing plate.

[0040] Meanwhile, the side plates are provided with reinforcing ribs on the lower side to improve the clamping force.

[0041] The back end of the bottom plate 613 and / or the top plate 612 of the terminal block 610 is extended to form a contact plate 614, if two sets of moving and static contacts are needed, the terminal block needs to be extended at both ends to form the contact plates, and if only one set is needed, only one of the two needs to be extended to form the contact plate.

[0042] The contact plate 614 is two and parallel, the distance between the two contact plates 614 is greater than the moving distance of the contact support, so that when the contact support moves, the contactor between the two can only contact one of the contact plates, ensuring normal opening.

[0043] The contact support 300 is provided with a mounting hole, the contact bridge 400 passes through the mounting hole, and the contact bridge 400 and the contact support 300 are further provided with an elastic element 500, the elastic element 500 is a spring leaf, in some embodiments, the elastic element can also be a spring, a compression spring, etc. The existence of the elastic element is to make the contact bridge have a certain stroke to ensure that when it contacts the contact plate, the phenomenon of impact deformation caused by the existence of size error does not occur, and at the same time, it can also ensure the stable contact of the two when closing, and the installation is more convenient.

[0044] The embodiments should not be regarded as a limitation of the utility model, but any improvement based on the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. A disconnector comprising a housing (100), characterized in that: The shell (100) is internally provided with: A handle (200) rotatably arranged in the shell (100); A contact support (300) arranged in linkage with the handle (200) and slidable relative to the height direction of the shell (100); At least one contact bridge (400) provided with a movable contact, the contact bridge (400) being movably assembled on the contact support (300); A wiring assembly (600) arranged at both ends of the shell (100), the wiring assembly (600) comprising a wiring frame (610), the rear end of the wiring frame (610) extending towards the contact support (300) to form a contact plate (614), the contact plate (614) being provided with a fixed contact, And the contact support (300) can be driven by external force to make the movable contact contact or separate from the fixed contact.

2. The disconnector according to claim 1, characterized in that: The wiring frame (610) has a threading space (617) for threading a wire, the upper end of the wiring frame (610) being provided with a threaded hole (618), the threaded hole (618) being provided with a bolt (620) in threaded cooperation therewith, and the threading space (617) being internally provided with a wire pressing plate (630), the wire pressing plate (630) being fixedly connected with the bolt (620).

3. A disconnector according to claim 2, characterised in that: The two sides of the wire pressing plate (630) are downwardly inclined to form side plates (631).

4. An isolating switch according to claim 3, characterised in that: The side walls (611) on both sides of the wiring frame (610) are provided with guide notches (615), the side plates (631) being partially arranged through the guide notches (615), and the wire pressing plate (630) can be clamped in cooperation with the bottom plate (613) of the wiring frame (610) under the action of external force.

5. An isolating switch according to claim 4, characterised in that: The bottom plate (613) is provided with inclined surfaces (616) on both sides matched with the side plates (631).

6. The disconnector according to claim 1, characterized in that: The rear end of the bottom plate (613) and / or the top plate (612) of the wiring frame (610) extends to form the contact plate (614).

7. An isolating switch according to claim 6, characterised in that: The contact plate (614) is two and arranged in parallel, the distance between the two contact plates (614) being greater than the moving distance of the contact support.

8. The disconnector according to claim 1, characterized in that: The contact support (300) is provided with a mounting hole, the contact bridge (400) being arranged through the mounting hole, and the contact bridge (400) and the contact support (300) are further provided with an elastic member (500).

9. An isolating switch according to claim 8, characterised in that: The elastic member (500) is a spring piece.

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