CN114664584A - Interlocking mechanism and isolating switch - Google Patents

Abstract

The application provides an interlocking mechanism and an isolating switch, which belong to the technical field of low-voltage apparatuses and comprise a locking bar arranged on an operating mechanism shell, wherein the locking bar is hinged with a lever of the operating mechanism, the lever is used for connecting a handle of the isolating switch so as to operate the disconnecting switch to be opened or closed, the operating mechanism shell is also connected with a fuse group, one end of the locking bar extends into the fuse group, and the locking bar is driven by the lever to move so as to enable the locking bar to be clamped with a fuse cover of the fuse group when the fuse cover is closed; and when the brake is opened, the locking strip is separated from the fuse cover, and the locking strip is clamped with the operating mechanism shell. The locking bar is driven to move through the lever, so that the fuse cover cannot be opened when the isolating switch is switched on, and the isolating switch cannot be switched on when the fuse cover is opened when the isolating switch is switched off, thereby avoiding misoperation in the states of switching on and switching off and improving the operation safety and the working reliability of the isolating switch.

Description

Interlocking mechanism and isolating switch

Technical Field

The application relates to the technical field of low-voltage apparatuses, in particular to an interlocking mechanism and a disconnecting switch.

Background

The fuse is an electric appliance which uses a metal conductor as a melt to be connected in series in a circuit, and is fused due to self heating when overload or short-circuit current passes through the melt, so that the circuit is broken.

A fuse is arranged in the isolating switch to protect the isolating switch. The isolating switch can be opened (breaking circuit) or closed (connecting circuit) through the operating mechanism, but during the existing operation, misoperation can be caused by human negligence, for example, the misoperation during the closing process causes the opening process, or the misoperation during the opening process causes the closing process, the normal work of the isolating switch is influenced, and the electric shock danger is also caused.

Disclosure of Invention

The utility model provides an aim at provides an interlock mechanism and isolator can improve isolator's operational reliability and operational safety.

The embodiment of the application is realized as follows:

one aspect of the embodiment of the application provides an interlocking mechanism, which comprises a locking bar arranged on an operating mechanism shell, wherein the locking bar is hinged to an operating mechanism lever, the lever is used for connecting a handle of an isolating switch to operate the opening or closing of the isolating switch, the operating mechanism shell is further connected with a fuse set, one end of the locking bar extends into the fuse set, and the locking bar is driven by the lever to move so as to enable the locking bar and a fuse cover of the fuse set to be clamped when the fuse cover is closed; and when the brake is switched off, the locking bar is separated from the fuse cover, and the locking bar is clamped with the operating mechanism shell.

When the isolating switch is in a closing state, the locking bar is clamped with the fuse cover, so that the fuse cover has a locking state, namely the fuse cover cannot be opened when the isolating switch is in the closing state. When the isolating switch is in a switching-off state, the locking bar is separated from the fuse cover, the fuse cover can be opened, at the moment, the locking bar is clamped with the operating mechanism shell, the operating mechanism cannot drive the locking bar to move, and when the isolating switch is in the switching-off state, the fuse cover can be opened, but the isolating switch cannot be switched on. The misoperation in the closing and opening states is avoided, and the operation safety and the working reliability of the isolating switch are improved.

Optionally, one end of the locking bar extending into the fuse set is provided with a locking bar hook, and the fuse cover is provided with a hook slot matched with the locking bar hook. The operating mechanism drives the isolating switch to be in a closing state, the lever drives the locking bar to move, the locking bar hook is clamped into the hook groove, the locking bar and the fuse cover are locked, and the fuse cover cannot be opened at the moment.

Optionally, the locking bar hook comprises a body connected with the locking bar and a hook part connected with the body, and the hook part is used for being clamped in the hook groove. The locking strip hook is formed into a hook shape, and the hook part is clamped in the hook groove, so that the locking strip hook is clamped in the hook groove of the fuse cover.

Optionally, the hook slot is located on a side of the fuse cover close to the locking bar, and the locking bar hook and the hook slot are opposite in orientation to enable the locking bar hook to be clamped into the hook slot.

Optionally, the fuse further comprises an elastic element arranged on the housing of the fuse set, the elastic element is located on the opposite side of the locking bar where the locking bar hook is arranged, and the elastic element abuts against the locking bar and is in a compressed state when the fuse is closed. When the isolating switch is in a closing state, the elastic element is abutted against the locking strip, and the elastic element is compressed to accumulate elastic force.

Optionally, the resilient element comprises any one of a leaf spring, a compression spring or a spring.

Optionally, still including establishing locating part on the operating device casing, the lever drive the locking bar motion to when the separating brake, the locking bar with the fuse lid breaks away from, through the locating part with the locking bar supports and holds, restriction separating brake back the motion of locking bar. When the brake is switched off, the lever moves to the brake switching-off position to drive the locking bar to move, so that the locking bar is separated from the fuse cover, and the fuse cover can be opened. After the opening and the fuse cover are opened, the locking bar moves to a state of abutting against the limiting part, and the lever cannot drive the locking bar to move through the limitation of the limiting part so as to avoid the closing of the isolating switch after the fuse cover is opened.

Optionally, the limiting part includes a limiting shaft arranged on the operating mechanism casing, a protrusion is arranged on the locking bar, and when the lever is opened, the protrusion abuts against the limiting shaft. The protrusion is matched with the limiting shaft, when the lever is switched off, the protrusion of the locking bar is abutted against the limiting shaft, so that the locking bar cannot move continuously, and the switching-on operation is avoided.

Optionally, an arc-shaped long hole is formed in the lever, and the lever is hinged to the locking bar through a shaft penetrating through the arc-shaped long hole. The lever moves to one end of the arc-shaped long hole, the isolating switch is in a closing state, the lever moves to the other end of the arc-shaped long hole, and the isolating switch is in a breaking state.

Another aspect of the embodiments of the present application provides an isolation switch, which includes an operating mechanism housing, a fuse set connected to the operating mechanism housing, and the above interlock mechanism, wherein an operating mechanism is disposed in the operating mechanism housing, and the operating mechanism is connected to a handle; the fuse set comprises a fuse cover, a locking bar of the interlocking mechanism is arranged in the operating mechanism shell and extends into the fuse set, and the locking bar is hinged to a lever of the operating mechanism.

The beneficial effects of the embodiment of the application include:

according to the interlocking mechanism and the isolating switch, the locking bar is arranged on the inner side wall of the operating mechanism shell, the handle is connected with the lever of the operating mechanism, and the handle drives the operating mechanism to enable the isolating switch to be switched on or off. The lever is connected with the locking bar, the handle drives the locking bar to move through the lever, so that the locking bar is clamped with the fuse cover when the fuse is closed, and the fuse cover cannot be opened when the fuse is closed; the handle drives the locking bar to move through the lever, so that in a brake-off state, the locking bar is separated from the fuse cover, the fuse cover can be opened, but the locking bar is clamped with the operating mechanism shell, and the disconnecting switch cannot be operated to switch on. The locking bar is driven to move through the lever, so that the fuse cover cannot be opened when the isolating switch is switched on, and the isolating switch cannot be switched on when the fuse cover is opened when the isolating switch is switched off, thereby avoiding misoperation in the states of switching on and switching off and improving the operation safety and the working reliability of the isolating switch.

In the disconnecting switch provided by the embodiment, the operating mechanism is connected with the handle, the handle can operate opening or closing through the operating mechanism, the lever of the operating mechanism is connected with the locking bar, the lever is driven by the handle to drive the locking bar to move, when the disconnecting switch is in a closing state, the lever drives the locking bar to move, so that the locking bar is clamped with the fuse cover, and the fuse cover cannot be opened; when the isolating switch is in a switching-off state, the handle drives the lever to drive the locking bar to move, so that the locking bar is separated from the fuse cover, the fuse cover can be opened, and meanwhile, the locking bar is clamped with the operating mechanism shell, so that the isolating switch cannot be switched on. The locking bar is driven to move through the lever, so that the fuse cover cannot be opened when the isolating switch is switched on, and the fuse cover is opened when the isolating switch is switched off, but the isolating switch cannot be switched on, thereby avoiding misoperation in the states of switching on and switching off, and improving the operation safety and the working reliability of the isolating switch.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an interlocking mechanism according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of an interlocking mechanism according to an embodiment of the present application.

100-operating mechanism shell; 101-a locking bar; 102-a lever; 103-axis; 104-locking bar hooks; 105-a limiting shaft; 106-bumps; 107-a resilient element; 108-arc-shaped elongated holes; 200-a fuse cover; 201-hook groove; 210-housing of the fuse group.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Referring to fig. 1 and 2, the present embodiment provides an interlocking mechanism, which includes a locking bar 101 disposed on an operating mechanism housing 100, the locking bar 101 is hinged to a lever 102 of the operating mechanism, the lever 102 is used for connecting a handle of an isolating switch to operate opening or closing of the isolating switch, the operating mechanism housing 100 is further connected to a fuse set, one end of the locking bar 101 extends into the fuse set, and the locking bar 101 is driven by the lever 102 to move, so that the locking bar 101 and the fuse cover 200 are engaged when closing; when the brake is released, the lock bar 101 and the fuse cover 200 are disengaged, and the lock bar 101 and the actuator housing 100 are engaged.

The isolating switch comprises an operating mechanism, a fuse group, a contact mechanism and the like. The operating mechanism comprises a lever 102, the lever 102 is connected with a handle, and the operating mechanism is driven to act through the operating handle, so that the isolating switch can be operated to be switched off or switched on.

The fuse set includes a fuse cover 200, a fuse set housing 210, and a fuse disposed within the fuse set housing 210, the fuse cover 200 is snap-fitted to the fuse set housing 210, and the fuse set housing 210 and the fuse cover 200 are hinged such that the fuse cover 200 is movable along the hinge.

For safety, when the disconnector is in the closed state, the disconnector is energized and the fuse cover 200 cannot be opened to prevent a malfunction from touching the fuse. When the isolating switch is in an opening state, the isolating switch is powered off, and at the moment, the fuse cover 200 can be opened, but other mechanisms in the isolating switch cannot be operated, so that the isolating switch is prevented from being switched on by misoperation. Therefore, to achieve the above purpose, a locking bar 101 is disposed on the inner side wall of the operating mechanism housing 100, the locking bar 101 and the lever 102 are hinged by a shaft 103, and the lever 102 of the operating mechanism is connected with a handle, so that the lever 102 can drive the locking bar 101 to move when the operating mechanism is driven by the handle.

The lever 102 is provided with an arc-shaped long hole 108, and the lever 102 and the locking bar 101 are hinged through a shaft 103 penetrating through the arc-shaped long hole 108. Illustratively, the lever 102 moves to the left end of the arc-shaped elongated hole 108, the disconnecting switch is in a closing state, the lever 102 moves to the right end of the arc-shaped elongated hole 108, and the disconnecting switch is in an opening state.

When the disconnecting switch is in a closing state, the locking bar 101 is clamped with the fuse cover 200, so that the fuse cover 200 has a locked state, namely, when the disconnecting switch is in the closing state, the fuse cover 200 cannot be opened.

When the disconnecting switch is in a switching-off state, the locking bar 101 and the fuse cover 200 are separated, the fuse cover 200 can be opened, at the moment, the locking bar 101 is clamped with the operating mechanism shell 100, the operating mechanism cannot drive the locking bar 101 to move, and when the disconnecting switch is in the switching-off state, the fuse cover 200 can be opened, but the disconnecting switch cannot be switched on.

When the interlocking mechanism provided by the embodiment of the application works, the handle drives the operating mechanism to enable the isolating switch to be switched on, at the moment, the lever 102 drives the locking bar 101 to move, the locking bar 101 moves leftwards and is clamped with the fuse cover 200, so that the fuse cover 200 and the locking bar 101 have a locked state, the fuse cover 200 cannot be opened, and the purpose that the fuse cover 200 cannot be opened in the switching-on state is achieved. The handle drives the operating mechanism to open the isolating switch, the locking bar 101 is driven to move through the lever 102, the locking bar 101 moves rightwards and is separated from the fuse cover 200, the fuse cover 200 is opened, meanwhile, the locking bar 101 is clamped with the operating mechanism shell 100, the lever 102 is operated again, the locking bar 101 cannot move, and the purposes that the fuse cover 200 can be opened and the isolating switch cannot be closed in the opening state are achieved.

According to the interlocking mechanism provided by the embodiment of the application, the locking bar 101 is arranged on the inner side wall of the operating mechanism shell 100, the handle is connected with the lever 102 of the operating mechanism, and the operating mechanism is driven by the handle, so that the isolating switch can be switched on or off. The lever 102 is connected with the locking bar 101, the lever 102 drives the locking bar 101 to move, so that the locking bar 101 is clamped with the fuse cover 200 during closing, and the fuse cover 200 cannot be opened during closing; the lever 102 drives the locking bar 101 to move, so that in the opening state, the locking bar 101 is separated from the fuse cover 200, the fuse cover 200 can be opened, but the locking bar 101 is engaged with the operating mechanism housing 100, and the disconnecting switch cannot be operated to close. The lever 102 drives the locking bar 101 to move, so that the fuse cover 200 cannot be opened when the isolating switch is switched on, and the isolating switch cannot be switched on when the fuse cover 200 is opened when the isolating switch is switched off, thereby avoiding misoperation in the states of switching on and switching off and improving the safety and the working reliability of operation.

Specifically, one end of the locking bar 101 extending into the fuse set is provided with a hook of the locking bar 101, and the fuse cover 200 is provided with a hook slot 201 matched with the hook of the locking bar 101. When the operating mechanism drives the disconnecting switch to be in a closing state, the lever 102 drives the locking bar 101 to move, the locking bar 101 is clamped into the hook groove 201 in a hooking mode, the locking bar 101 and the fuse cover 200 are locked, and at the moment, the fuse cover 200 cannot be opened.

The hook slot 201 is located on the side of the fuse cover 200 adjacent to the locking bar 101, with the locking bar 101 hook and hook slot 201 facing opposite.

The hook groove 201 is located on the inner side of the fuse cover 200, and the hook groove 201 faces the hook of the locking bar 101, so that the hook of the locking bar 101 is engaged in the hook groove 201.

The locking bar 101 hook includes a body provided on the locking bar 101, and a hook portion connected to the body so that the locking bar 101 hook forms a hook shape for being engaged in the hook groove 201 so that the locking bar 101 hook is engaged in the hook groove 201 of the fuse cover 200.

Illustratively, the hook slot 201 is oriented to the right and the hook of the locking bar 101 is oriented to the left, which cooperate to latch the fuse cover 200.

The interlocking mechanism further comprises an elastic element 107 arranged on the shell 210 of the fuse set, the elastic element 107 is located on the opposite side of the locking bar 101, which is provided with the hook of the locking bar 101, two ends of the elastic element 107 are respectively arranged on the shell 210 of the fuse set, and the elastic element 107 abuts against the locking bar 101 and is in a compressed state when in a closing state.

Illustratively, the elastic element 107 comprises any one of a plate spring, a pressure spring or a spring, the elastic element 107 is located at the lower end of the locking bar 101, two ends of the elastic element 107 are respectively arranged on the shell 210 of the fuse set, the locking bar 101 is hooked at the upper end of the locking bar 101, when the disconnector is in a closing state, the elastic element 107 abuts against the lower end of the locking bar 101, and the elastic element 107 is compressed to accumulate elastic force to prepare for limiting the movement of the locking bar 101 in a switching-off state.

When the disconnecting switch is opened, the lever 102 moves to the opening position to drive the locking bar 101 to move, the hook of the locking bar 101 moves out of the hook groove 201 of the fuse cover 200, the hook of the locking bar 101 is separated from the fuse cover 200, the fuse cover 200 can be opened, and meanwhile, the elastic element 107 jacks up the locking bar 101, so that the locking bar 101 can be abutted against the limiting piece.

When the fuse cover 200 is opened and the disconnecting switch is opened and closed to prevent an erroneous operation, the interlock mechanism further includes a stopper on the operating mechanism housing 100.

Specifically, a limiting member is arranged on the operating mechanism housing 100, and the lever 102 drives the lock bar 101 to move, so that when the brake is opened, the lock bar 101 is separated from the fuse cover 200, and the movement of the lock bar 101 after the brake is opened is limited by the supporting of the limiting member and the lock bar 101.

When the fuse is opened, the lever 102 moves to the open position to move the locking bar 101, so that the locking bar 101 and the fuse cover 200 are separated, and the fuse cover 200 can be opened. After the opening and fuse cover 200 is opened, the locking bar 101 moves to a state of abutting against the limiting part, and the lever 102 cannot drive the locking bar 101 to move any more through the limitation of the limiting part, so that the disconnecting switch is prevented from being closed after the fuse cover 200 is opened.

The limiting member comprises a limiting shaft 105 arranged on the operating mechanism shell 100, a protrusion 106 is arranged on the locking bar 101, and when the lever 102 is opened, the protrusion 106 is abutted against the limiting shaft 105.

The operating mechanism casing 100 is provided with a limiting shaft 105, the locking bar 101 is provided with a protrusion 106, the protrusion 106 is matched with the limiting shaft 105, when the lever 102 is opened, the protrusion 106 of the locking bar 101 is abutted against the limiting shaft 105, so that the locking bar 101 cannot move continuously, and the closing operation is avoided.

When the switch needs to be switched on again, the fuse cover 200 is firstly buckled on the shell 210 of the fuse group, the fuse cover 200 touches the locking bar hook 104, the locking bar 101 is released from the limit of the limiting shaft 105, and at the moment, the lever 102 is operated to carry out the switch-on operation.

To sum up, in the interlocking mechanism provided in the embodiment of the present application, the locking bar 101 is provided with the locking bar 101 hook, the locking bar 101 hook is in a hook shape, the operating mechanism is driven by the handle, so that the lever 102 drives the locking bar 101 to move, when the lever 102 moves to the left end (at the position H in fig. 1), that is, when the disconnecting switch is in a closing state, the lever 102 drives the locking bar 101 to move leftward, so that the locking bar 101 hook is clamped into the hook slot 201 on the fuse cover 200, and the fuse cover 200 cannot be locked and unlocked; at the same time, the locking bar 101 compresses the elastic element 107, so that the elastic element 107 accumulates elastic force; when the lever 102 moves to the right end (S in fig. 2), that is, when the disconnecting switch is in a switching-off state, the lever 102 drives the locking bar 101 to move to the right, the hook of the locking bar 101 is moved out of the hook slot 201, and the fuse cover 200 can be opened; meanwhile, the elastic element 107 releases the elastic force to jack up the locking bar 101, the protrusion 106 on the locking bar 101 abuts against the limiting shaft 105 on the operating mechanism shell 100, and the limiting shaft 105 limits the movement of the locking bar 101, so that the lever 102 cannot be switched on. Through fuse lid 200 can not open when closing a floodgate, and separating brake and fuse lid 200 open the back, isolator can't close a floodgate, has avoided the maloperation in the operation process, improves isolator operational reliability and operational safety nature.

The embodiment of the present application further provides an isolation switch, which includes an operating mechanism housing 100, a fuse set connected to the operating mechanism housing 100, and the interlocking mechanism, where an operating mechanism is arranged in the operating mechanism housing 100, and the operating mechanism is connected to a handle; the fuse assembly includes a fuse cover 200, a locking bar 101 of an interlock mechanism is disposed within the actuator housing 100 and extends into the fuse assembly, and the locking bar 101 is hingedly connected to the actuator lever 102.

According to the disconnecting switch provided by the embodiment, the operating mechanism is driven by the handle, the disconnecting switch can be operated to be opened or closed, the handle is connected with the lever 102 of the operating mechanism, the lever 102 is connected with the locking bar 101, the lever 102 is driven by the handle to drive the locking bar 101 to move, when the disconnecting switch is in a closed state, the lever 102 drives the locking bar 101 to move, the locking bar 101 is clamped with the fuse cover 200, and the fuse cover 200 cannot be opened; when the disconnecting switch is in a switching-off state, the handle drives the lever 102 to drive the locking bar 101 to move, so that the locking bar 101 is separated from the fuse cover 200, the fuse cover 200 can be opened, and meanwhile, the locking bar 101 is clamped with the operating mechanism shell 100, so that the disconnecting switch cannot be switched on. The lever 102 drives the locking bar 101 to move, so that the fuse cover 200 cannot be opened when the isolating switch is switched on, and the fuse cover 200 is opened when the isolating switch is switched off, but the isolating switch cannot be switched on, thereby avoiding misoperation in the states of switching on and switching off, and improving the operation safety and the working reliability of the isolating switch.

The disconnector comprises the same construction and advantages as the interlocking mechanism in the previous embodiment. The structure and the advantages of the interlocking mechanism have been described in detail in the foregoing embodiments, and are not described in detail herein.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An interlocking mechanism is characterized by comprising a locking bar arranged on an operating mechanism shell, wherein the locking bar is hinged to a lever of an operating mechanism, the lever is used for being connected with a handle of an isolating switch to operate the isolating switch to open or close, the operating mechanism shell is also connected with a fuse set, one end of the locking bar extends into the fuse set, and the locking bar is driven by the lever to move so that the locking bar is clamped with a fuse cover of the fuse set when the fuse cover is closed; and when the brake is switched off, the locking bar is separated from the fuse cover, and the locking bar is clamped with the operating mechanism shell.

2. An interlock as claimed in claim 1 wherein the end of the locking bar extending into the fuse block is provided with a locking bar hook and the fuse cover is provided with a hook slot for engagement with the locking bar hook.

3. The interlock mechanism of claim 2, wherein said locking bar hook includes a body coupled to said locking bar and a hook portion coupled to said body for engaging in said hook slot.

4. The interlock mechanism of claim 2, wherein said hook slot is located on a side of said fuse cover adjacent said locking bar, said locking bar hook and said hook slot being oppositely oriented.

5. The interlock mechanism of claim 2, further comprising a resilient member disposed on a housing of the fuse set, the resilient member being located on an opposite side of the locking bar from the locking bar hook, the resilient member being biased against the locking bar and being compressed when the fuse is closed.

6. The interlock mechanism of claim 5, wherein the resilient member comprises any one of a leaf spring, a compression spring, or a spring.

7. The interlock mechanism according to claim 1, further comprising a stopper provided on the operating mechanism housing, wherein the lever drives the lock bar to move, so that the lock bar is separated from the fuse cover when the switch is opened, and the stopper abuts against the lock bar to restrict the movement of the lock bar after the switch is opened.

8. The interlock mechanism of claim 7, wherein the retaining member comprises a retaining shaft disposed on the operating mechanism housing, the locking bar has a protrusion, and the protrusion abuts against the retaining shaft when the lever is opened.

9. The interlock mechanism of claim 1 wherein said lever has an arcuate slot, said lever and said locking bar being hingedly connected by a shaft extending through said arcuate slot.

10. An isolating switch, characterized by comprising an operating mechanism shell, a fuse group connected with the operating mechanism shell and an interlocking mechanism according to any one of claims 1 to 9, wherein the operating mechanism is arranged in the operating mechanism shell and is connected with a handle; the fuse set comprises a fuse cover, a locking bar of the interlocking mechanism is arranged in the operating mechanism shell and extends into the fuse set, and the locking bar is hinged to a lever of the operating mechanism.

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