CN112768309A - Circuit breaker with anti-electric-shock function - Google Patents

Abstract

The invention provides a circuit breaker with a function of preventing electric shock, and relates to the technical field of electric devices. The circuit breaker comprises a wiring mechanism, a detection mechanism, a controller and a switching on/off mechanism. The wiring mechanism is used for correspondingly connecting the external wires. The detection mechanism is used for detecting whether the at least two external wires are connected with the wiring mechanism or not, sending a first signal when the at least one external wire is in a non-connected state, and sending a second signal when the at least two external wires are in a connected state. The controller is connected to detection mechanism and switching on/off mechanism simultaneously, and the controller is configured to: when a first signal is received, controlling the switching-on/off mechanism to be in a switching-off state; and when receiving the second signal, controlling the switching-on/off mechanism to be in a closing permission state. The probability of electric shock accidents occurring when the circuit breaker is connected is lower, the safety of the circuit breaker with the electric shock prevention function is higher, and normal use can be guaranteed.

Description

Circuit breaker with anti-electric-shock function

Technical Field

The invention relates to the technical field of electrical devices, in particular to a circuit breaker with an anti-electric-shock function.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breaker is divided into according to the mounting means: plug-in, fixed and drawer type, plug-in circuit breakers are convenient to install and use and have been widely used. Plug-in circuit breaker need insert the outlet terminal of circuit breaker with external conductor when the installation is used and connect in order to realize the load, nevertheless when carrying out external conductor to current plug-in circuit breaker and insert, probably take place the electric shock accident, the security is lower, influences the normal use of circuit breaker.

Disclosure of Invention

The invention aims to provide a circuit breaker with the function of electric shock prevention, which has the advantages of low probability of electric shock accidents during wiring, high safety and capability of ensuring normal use.

Embodiments of the invention may be implemented as follows:

the embodiment of the invention provides a circuit breaker with a function of preventing electric shock, which comprises a wiring mechanism, a detection mechanism, a controller and a switching on/off mechanism, wherein the wiring mechanism is connected with the detection mechanism;

the number of the wiring mechanisms is at least two, and the at least two wiring mechanisms are used for correspondingly connecting at least two external wires one by one;

the detection mechanism is used for detecting whether the at least two external leads are connected with the wiring mechanism or not, sending a first signal when the at least one external lead is in a non-connected state, and sending a second signal when the at least two external leads are in a connected state;

the controller is connected to detection mechanism and switching on/off mechanism simultaneously, and the controller is configured to:

when a first signal is received, controlling the switching-on/off mechanism to be in a switching-off state;

and when receiving the second signal, controlling the switching-on/off mechanism to be in a closing permission state.

In an alternative embodiment, the detection mechanism comprises a base, at least two sets of transmission assemblies, a detection circuit and a detection element;

the at least two groups of transmission assemblies are respectively arranged on the base and correspond to the at least two wiring mechanisms one by one, when the corresponding wiring mechanisms are not connected with the external lead, the transmission assemblies are connected with the detection circuit, and when the corresponding wiring mechanisms are connected with the external lead, the transmission assemblies can be disconnected with the detection circuit under the driving of the wiring mechanisms;

when at least one group of transmission assemblies is connected with the detection circuit, the detection circuit is a passage; when all the transmission assemblies are disconnected from the detection circuit, the detection circuit is open-circuit;

the detection element is connected with the detection circuit and used for detecting the on-off of the detection circuit, and when the detection element detects that the detection circuit is a passage, a first signal is sent to the controller; and when the detection element detects that the detection circuit is broken, sending a second signal to the controller.

In an alternative embodiment, the detection circuit comprises a power source and two electrically conductive shafts fixed to the base;

the two conductive shafts are connected with the anode and the cathode of the power supply in a one-to-one correspondence manner, at least two groups of transmission assemblies are connected between the two conductive shafts in parallel, and when at least one group of transmission assemblies are simultaneously connected with the two conductive shafts, the detection circuit is a passage; when all the transmission assemblies are disconnected from at least one conductive shaft, the detection circuit is open circuit.

In an alternative embodiment, the transmission assembly comprises a rotating button and a contact spring, the rotating button is rotatably connected to the base, the contact spring is provided with two conductive contact hands, and when the wiring mechanism is not connected with an external lead, the two conductive contact hands are respectively contacted with the two conductive shafts in a one-to-one correspondence manner; when the wiring mechanism is connected with an external lead, the rotating button can rotate under the driving of the wiring mechanism to push the conductive contact fingers to rotate, so that at least one conductive contact finger is separated from contact with the conductive shaft;

the at least two contact springs are connected between the two conductive shafts in parallel, and when two conductive tentacles of the at least one contact spring are in one-to-one corresponding contact with the two conductive shafts, the detection circuit is a passage; when at least one conductive tentacle of each contact spring is separated from the corresponding conductive shaft, the detection circuit is broken.

In an alternative embodiment, the contact spring comprises a torsion spring, the torsion arm of which is an electrically conductive tentacle.

In an alternative embodiment, two conductive tentacles of the contact spring are positioned between the two conductive shafts, and when the wiring mechanism is connected to the external lead, the rotating button can be driven by the wiring mechanism to rotate to push one conductive tentacle of the contact spring to rotate so as to enable the conductive tentacle to be separated from the corresponding conductive shaft.

In optional embodiment, the turn-button includes interconnect's installation department and butt portion, and installation department and butt portion are insulating material, and the installation department rotates to be connected in the base, and the installation department is provided with and is used for driving electrically conductive tentacle pivoted and presses the platform, and when wiring mechanism inserts external conductor, wiring mechanism supports to hold and rotates in the butt portion with the drive installation department to drive and press the platform to rotate and exert pressure in order to electrically conductive tentacle, and then drive electrically conductive tentacle and rotate.

In an alternative embodiment, the base includes a vertical plate disposed between the two sets of transmission assemblies to separate the two contact springs, and the two conductive shafts penetrate through the vertical plate.

In an optional implementation mode, the wiring mechanism comprises an elastic sheet and a wiring board which are connected with each other, the elastic sheet and the wiring board are both arranged on the base, the elastic sheet and the wiring board are used for clamping an external wire together, and when the external wire is in an access state, the elastic sheet can deform under the action of the external wire to abut against the turn button, so that the turn button rotates.

In an optional implementation mode, the elastic sheet is provided with a first end and a second end which are arranged oppositely, the first end is provided with a mounting hole for an external lead to extend into, the elastic sheet is bent to enable the second end to penetrate through the mounting hole, the wiring board penetrates through the mounting hole, the second end and the wiring board are used for clamping the external lead together, and when the external lead is in an access state, the second end can move in the mounting hole under the action of the external lead to support the rotating button so as to enable the rotating button to rotate.

The embodiment of the invention has the beneficial effects that:

the circuit breaker with the anti-electric-shock function is provided with a detection mechanism, and the detection mechanism is used for detecting whether at least two external wires are connected to the wiring mechanism. When detecting that at least one external conductor is in the state of not inserting, detection mechanism sends first signal to the controller, and the controller is when receiving first signal, and control closing and separating brake mechanism is in the separating brake state to before the access of the external conductor of wiring mechanism is accomplished to the personnel of working a telephone switchboard, the circuit breaker that has the protection against electric shock function will be in the separating brake state always, thereby avoid the circuit breaker to lead to closing a floodgate because remote control or button mistake touch etc. factor make the wiring mechanism electrified, avoid arousing the electric shock accident. Meanwhile, when the detection mechanism detects that the at least two external leads are both in an access state, the detection mechanism sends a second signal to the controller, and the controller controls the switching-on/off mechanism to be in a state of allowing switching-on when receiving the second signal. Therefore, the circuit breaker with the electric shock prevention function can ensure that the switching-on/switching-off mechanism is always in a switching-off state before all wiring mechanisms complete the access of external conductors, so that the probability of electric shock accidents of operators during wiring is reduced, and the switching-on/switching-off mechanism can allow switching-on after all wiring mechanisms complete the access of the external conductors, thereby ensuring the normal use of the circuit breaker after wiring.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker with a function of preventing electric shock according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first view angle of the wiring mechanism and the transmission assembly in a state where no external lead is connected according to the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a spring plate according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram illustrating a first view angle of the wiring mechanism cooperating with the transmission assembly in a state of accessing the external connection wire according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of two sets of transmission assemblies in a state where no external wires are connected according to an embodiment of the present invention;

FIG. 7 is a schematic view of the assembly of the knob and the contact spring according to the embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a second view angle of the wiring mechanism and the transmission assembly in a state where no external lead is connected according to the embodiment of the present invention;

FIG. 9 is a schematic structural diagram illustrating a second perspective of the wire connecting mechanism engaged with the transmission assembly in a state of connecting an external wire according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a third view angle of the wiring mechanism cooperating with the transmission assembly in a state of accessing the external connection wire in the embodiment of the present invention.

Icon: 100-circuit breaker with anti-electric shock function; 110-a wiring mechanism; 111-spring plate; 112-a first end; 113-a patch panel; 114-a second end; 115-mounting holes; 120-a base; 122-a vertical plate; 123-mounting a boss; 124-mounting shaft; 130-a detection mechanism; 132-a power supply; 134-a transmission assembly; 135-a detection circuit; 136-a conductive shaft; 137-a detection element; 138-a knob; 139-contact spring; 140-conductive tentacles; 142-a mounting portion; 143-pressing the platform; 144-an abutment; 150-a controller; 160-electric operating mechanism; 170-switching on and off the brake mechanism; 200-external connecting wire.

Detailed Description

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

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 invention.

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.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, the present embodiment provides a circuit breaker 100 with a function of preventing electric shock, which includes a wiring mechanism 110, a detecting mechanism 130, a controller 150, and a switching mechanism 170. The wiring mechanism 110, the detection mechanism 130, the controller 150 and the switching mechanism 170 are disposed in the housing of the circuit breaker 100 having the electric shock preventing function. The wiring mechanism 110 has at least two, and the at least two wiring mechanisms 110 are used for connecting at least two external wires 200 in a one-to-one correspondence. The detection mechanism 130 is connected to the wiring mechanism 110, and the detection mechanism 130 is configured to detect whether at least two external wires 200 are both connected to the wiring mechanism 110, and send a first signal when at least one external wire 200 is in a non-connected state, and send a second signal when at least two external wires 200 are both in a connected state. The controller 150 is connected to both the detection mechanism 130 and the switching mechanism 170, and the controller 150 is configured to: when the first signal is received, the switching on/off mechanism 170 is controlled to be in a switching off state; when receiving the second signal, the switching mechanism 170 is controlled to be in a closing permission state, so that the switching mechanism 170 can perform a closing action.

Referring to fig. 1 and 2, the detecting mechanism 130 includes a base 120, and the base 120 is disposed in the housing of the circuit breaker. Base 120 includes riser 122. In this embodiment, two opposite sides of the vertical plate 122 are respectively provided with a mounting boss 123 for connecting the wiring mechanism 110, and the two mounting bosses 123 protrude from the surface of the vertical plate 122 in directions away from each other. Mounting shafts 124 for connecting the detection mechanism 130 are respectively provided on opposite sides of the vertical plate 122. On the same side of the vertical plate 122, the mounting shaft 124 and the mounting boss 123 are spaced apart.

In this embodiment, the number of the wiring mechanism 110 is two to correspondingly connect two external wires 200, i.e. to connect a live wire and a neutral wire. The two wire connecting mechanisms 110 are correspondingly arranged on two sides of the vertical plate 122, i.e. the two wire connecting mechanisms 110 are separated by the vertical plate 122. The wiring mechanism 110 includes a spring 111 and a wiring board 113 connected to each other, and in order to improve the integration of the structure and save space, the spring 111 and the wiring board 113 are both mounted on the base 120, and the spring 111 and the wiring board 113 are used to clamp the external connection wire 200 together. It is understood that in other embodiments, the elastic piece 111 and the terminal block 113 may be fixed to a housing or the like of the circuit breaker 100 having the electric shock preventing function.

Referring to fig. 3, fig. 4 and fig. 5, taking a wiring mechanism 110 as an example, the elastic sheet 111 has a first end 112 and a second end 114 that are oppositely disposed. The first end 112 is provided with a mounting hole 115 for the external lead 200 to extend into, and the elastic sheet 111 is bent to allow the second end 114 to pass through the mounting hole 115. The bent portion of the elastic sheet 111 between the first end 112 and the second end 114 surrounds the mounting boss 123, so that the elastic sheet 111 is mounted on the mounting boss 123. The terminal plate 113 is disposed at the edge of the vertical plate 122, and the terminal plate 113 passes through the mounting hole 115 to be connected with the elastic sheet 111. Naturally, the distance between the second end 114 and the terminal plate 113 is smaller than the outer radial dimension of the external lead 200, and the second end 114 and the terminal plate 113 are used to commonly hold the external lead 200. In the present embodiment, the joint of the external connection wire 200 has a rectangular parallelepiped shape to better contact with the wiring board 113. When the external lead 200 is inserted from the mounting hole 115, since the distance between the second end 114 and the wiring board 113 is smaller than the outer radial dimension of the external lead 200, the external lead 200 applies a force to the second end 114 to make the second end 114 far away from the wiring board 113, so that the second end 114 can clamp the external lead 200 together with the wiring board 113 under the elastic restoring force. When the external lead 200 is connected, the second end 114 is moved in the mounting hole 115 in a direction away from the terminal block 113 by the external lead 200, and can be brought into contact with the detection mechanism 130.

In the present embodiment, both the wiring mechanisms 110 are composed of the spring piece 111 and the wiring board 113. In the layout, the elastic sheet 111 on one side of the vertical plate 122 is rotated 180 ° relative to the elastic sheet 111 on the other side, so that the mounting holes 115 are staggered from one another up and down (only up and down with respect to the illustrated placement position). Two terminal plates 113 are provided on the upper and lower sides of the vertical plate 122, respectively.

Referring to fig. 1 and 6, the detecting mechanism 130 further includes at least two sets of driving components 134, a detecting circuit 135 and a detecting element 137. At least two sets of transmission assemblies 134 are respectively installed on the base 120 and correspond to the at least two wiring mechanisms 110 one by one. When the corresponding wiring mechanism 110 does not access the external lead 200, the transmission assembly 134 is connected to the detection circuit 135. When the corresponding wiring mechanism 110 is connected to the external connection wire 200, the transmission assembly 134 can be disconnected from the detection circuit 135 under the driving of the wiring mechanism 110.

The at least two sets of driving components 134 and the detection circuit 135 can form a loop together, and when the at least one set of driving components 134 is connected with the detection circuit 135, the detection circuit 135 is a passage; when all of the transmission assemblies 134 are disconnected from the detection circuit 135, the detection circuit 135 is open. In the present embodiment, there are two sets of driving assemblies 134, and the two sets of driving assemblies 134 are respectively disposed on two sides of the vertical plate 122, so as to correspond to the two wiring mechanisms 110 one by one. When at least one group of transmission components 134 is connected with the detection circuit 135, the detection circuit 135 is a passage; when the two sets of transmission assemblies 134 are disconnected from the detection circuit 135, the detection circuit 135 is an open circuit.

The detecting element 137 is connected to the detecting circuit 135 for detecting whether the detecting circuit 135 is turned on or off, and may be a current detecting element or a voltage detecting element. When the detection element 137 detects that the detection circuit 135 is a pass, a first signal is sent to the controller 150; when the detection element 137 detects that the detection circuit 135 is open, a second signal is sent to the controller 150.

That is, the transmission assembly 134 is capable of controlling the opening and closing of the detection circuit 135 under the influence of the wiring mechanism 110, which is similar to a switch in a circuit. The detecting element 137 can detect the on/off of the detecting circuit 135 to send different electrical signals to the controller 150 in both the on and off states, so that the controller 150 can control the opening and closing mechanism 170 differently when receiving different electrical signals.

Specifically, referring to fig. 1, the detection circuit 135 includes a power source 132 and two conductive shafts 136 fixed to the base 120. The two conductive shafts 136 are connected to the positive and negative poles of the power supply 132 in a one-to-one correspondence. At least two sets of transmission assemblies 134 are connected in parallel between the two conductive shafts 136, and when at least one set of transmission assemblies 134 is simultaneously connected with the two conductive shafts 136, the detection circuit 135 is a passage; when all of the transmission assemblies 134 are disconnected from the at least one conductive shaft 136, the detection circuit 135 is open. In this embodiment, two sets of transmission assemblies 134 are connected in parallel between two conductive shafts 136, when at least one set of transmission assemblies 134 is connected to two conductive shafts 136 simultaneously, the detection circuit 135 is a path, the detection element 137 sends a first signal to the controller 150, and the controller 150 controls the switching-on/off mechanism 170 to be in a switching-off state; when the two sets of transmission assemblies 134 are disconnected from the at least one conductive shaft 136, the detection circuit 135 is an open circuit, the detection element 137 sends a second signal to the controller 150, and the controller 150 controls the switching mechanism 170 to be in a state of allowing switching on.

The switching mechanism 170 of the circuit breaker 100 having the electric shock prevention function is activated by a remote control or a button to perform switching on and off operations, and the closing permission state means that the controller 150 releases the control of locking the switching mechanism 170 in the switching off state so that the switching on operation can be performed by the remote control or the button activation.

In the present embodiment, to realize the intensification of the structure, the detection circuit 135, the detection element 137, and the controller 150 are integrated on the entire circuit board as a detection control module of the circuit breaker 100 having the electric shock preventing function. That is, the conductive shaft 136 is electrically connected to the detection control module, the switching on/off mechanism 170 is connected to the detection control module, the power supply 132 in the detection control module supplies power to the conductive shaft 136, the detection element 137 in the detection control module is used for detecting the on/off of the detection circuit 135, so as to transmit the corresponding electrical signal to the controller 150 in the detection control module, and the controller 150 controls the switching on/off mechanism 170 to perform the corresponding action. In other embodiments, the detection circuit 135, the detection element 137 and the controller 150 may be separately and independently disposed from each other in the circuit breaker 100 with the electric shock protection function instead of being integrated in the detection control module, and may be designed according to actual requirements.

Referring to fig. 6, the two sets of transmission assemblies 134 have the same structure and are respectively disposed on two sides of the vertical plate 122, so as to correspond to the two wiring mechanisms 110 one by one. Taking a set of transmission assemblies 134 as an example, the transmission assemblies 134 include a rotating knob 138 and a contact spring 139, the rotating knob 138 is rotatably connected to the base 120, the contact spring 139 is a conductor, the contact spring 139 has two conductive contact arms 140, and when the wiring mechanism 110 is not connected to the external connection wire 200, the two conductive contact arms 140 are respectively in one-to-one contact with the two conductive shafts 136; when the wiring mechanism 110 is connected to the external connection lead 200, the rotating button 138 can be driven by the wiring mechanism 110 to rotate to push the conductive contact fingers 140 to rotate, so that at least one conductive contact finger 140 is separated from the conductive shaft 136.

Referring to fig. 7, specifically, the knob 138 includes a mounting portion 142 and an abutting portion 144 connected to each other, the mounting portion 142 is rotatably connected to the base 120, and the abutting portion 144 is used for abutting against the wiring mechanism 110 to drive the mounting portion 142 to rotate.

The mounting portion 142 is rotatably coupled to the mounting shaft 124. The contact spring 139 is fixed to the mounting shaft 124, the contact spring 139 includes a torsion spring, the torsion arm of the torsion spring is a conductive contact 140, and the main body of the torsion spring is fixed to the mounting shaft 124. The mounting portion 142 is provided with a pressing platform 143 for driving the conductive tentacle 140 to rotate, and the pressing platform 143 is in contact with the conductive tentacle 140.

Referring to fig. 8 and 9, when the wiring mechanism 110 is connected to the external connection wire 200, the wiring mechanism 110 abuts against the abutting portion 144 to drive the mounting portion 142 to rotate, so as to drive the pressing table 143 to rotate to press the conductive tentacle 140. In detail, when the external lead 200 is in the connected state, the elastic piece 111 can deform under the action of the external lead 200 to abut against the rotating button 138, so that the rotating button 138 rotates. The abutting portion 144 is located on the side of the spring 111 away from the terminal plate 113. In a natural state of the resilient tab 111, the second end 114 of the resilient tab 111 and the abutment 144 are in close proximity or contact with each other. When the external lead 200 is clamped between the second end 114 and the terminal block 113, the second end 114 moves in the mounting hole 115 in a direction away from the terminal block 113, and the second end 114 directly abuts against the abutting portion 144, so that the abutting portion 144 rotates around the mounting shaft 124 under the pushing of the second end 114. That is, when the external lead 200 is in the connected state, the second end 114 can move in the mounting hole 115 under the action of the external lead 200 to abut against the knob 138 so as to rotate the knob 138. Thus, the knob 138 drives the pressing platform 143 on the mounting portion 142 to rotate around the mounting shaft 124, and further presses the conductive feeler 140 to push the conductive feeler 140 to rotate, so that the conductive feeler 140 and the conductive shaft 136 which are originally in contact are separated from contact, that is, the electrical connection between the contact spring 139 and the detection circuit 135 is disconnected. In the present embodiment, the mounting portion 142 and the abutting portion 144 are made of an insulating material, so that the rotating button 138 only plays a role of pushing the conductive contact 140 to rotate without participating in the electrical connection. In other embodiments, the knob 138 may also be provided with a resistor to connect in series between the two conductive tentacles 140 to participate in the electrical connection, so as to ensure that the detection circuit 135 can be normally turned on or off.

In the present embodiment, the two conductive tentacles 140 of the contact spring 139 are located between the two conductive shafts 136 and contact the two conductive shafts 136 in a one-to-one correspondence. The two conductive shafts 136 can limit the contact spring 139, so that the two conductive tentacles 140 cannot rotate to a space outside the two conductive shafts 136. The knob 138 is provided with a pressing stage 143 which contacts the conductive tentacle 140, and the pressing stage 143 is located upstream of the conductive tentacle 140 in the rotating direction of the knob 138. When the wiring mechanism 110 is connected to the external connection wire 200, the knob 138 can be driven by the wiring mechanism 110 to rotate so that the pressing platform 143 pushes one of the conductive tentacles 140 of the contact spring 139 to rotate, thereby disengaging the conductive tentacle 140 from the corresponding conductive shaft 136. The torsion arm of the torsion spring is the conductive tentacle 140, so the conductive tentacle 140 has a certain elasticity. Thereby, take place to rotate the back when electrically conductive tentacle 140 under the drive of turn-knob 138 and produce and warp, the trend that has the resilience all the time under the effect of restoring force, after dismantling external conductor 200, turn-knob 138 takes place to revolve under the effect of the restoring force of the electrically conductive tentacle 140 of deformation, electrically conductive tentacle 140 can resume by oneself to the state with the contact of electrically conductive axle 136, thereby detection circuitry 135 resumes to the electric connection state before wiring mechanism 110 inserts external conductor 200, circuit breaker 100 that has the electric shock prevention function before guaranteeing the next wiring is in the separating brake state, guarantee operating personnel's safety. It can be understood that during the process that the rotating button 138 rotates to drive the pressing platform 143 to press the conductive contact arm 140, the contact position between the pressing platform 143 and the torsion spring as the conductive contact arm 140 slides all the time, rather than being constant. Therefore, in other embodiments, the contact spring 139 may further include an anti-stagnation layer disposed on the torsion arm of the torsion spring, where the anti-stagnation layer is a smooth material coated on the surface of the torsion arm, and is used to further reduce the sliding resistance between the torsion arm and the pressing platform 143 to facilitate the sliding of the pressing platform 143 relative to the torsion arm, and further facilitate the pressing of the torsion arm, so as to separate the torsion arm from the contact with the corresponding conductive shaft 136. In other embodiments, the contact spring 139 may also be a resistive element with a conductive contact arm 140, the resistive element is fixed to the mounting shaft 124, the conductive contact arm 140 has elasticity and extends toward the conductive shaft 136, the contact between the contact spring 139 and the two conductive shafts 136 can be achieved, and the conductive contact arm 140 can be ensured to be automatically restored to the state of being in contact with the conductive shafts 136 after the external connection wire 200 is removed.

In other embodiments, the contact spring 139 may be fixed to the mounting shaft 124 with only one conductive tentacle 140 located between the two conductive shafts 136 and the other conductive tentacle 140 located outside of the two conductive shafts 136. Under the condition that the external lead 200 is not connected, the two conductive tentacles 140 contact the two conductive shafts 136 in a one-to-one correspondence manner, so that the contact springs 139 are electrically connected with the conductive shafts 136. After the external connection wire 200 is connected, the conductive contact 140 located between the two conductive shafts 136 is separated from the corresponding conductive shaft 136, and the electrical connection is broken.

In other embodiments, the contact spring 139 can be fixed to the knob 138 to rotate synchronously with the knob 138 without providing the pressing platform 143. When the external connection wire 200 is connected, one conductive contact 140 rotates with the knob 138 to be disconnected from the corresponding conductive shaft 136, and the other conductive contact 140 is stopped by the corresponding conductive shaft 136 and cannot rotate but deforms. When the external connection wire 200 is removed, the knob 138 rotates under the restoring force of the deformed conductive tentacle 140, and the conductive tentacle 140 can automatically restore to the state of contacting with the conductive shaft 136. Only one electrically conductive tentacle 140 may be located between the two electrically conductive shafts 136 when the contact spring 139 is secured to the knob 138. When the knob 138 is rotated, the contact spring 139 is rotated simultaneously, and both of the conductive tentacles 140 can be rotated with the knob 138 to disengage the corresponding conductive shaft 136, thereby breaking the electrical connection. At this time, a restoring mechanism is additionally provided to make the knob 138 rotate back so that the conductive tentacle 140 is restored to the state of contacting with the corresponding conductive shaft 136 after the external lead 200 is removed.

In this embodiment, the vertical plate 122 is disposed between the two sets of transmission assemblies 134 to separate the two contact springs 139, so as to prevent the two contact springs 139 from contacting each other, which may affect the normal operation of the detection circuit 135. The two conductive shafts 136 penetrate through the vertical plate 122 and respectively extend out from two sides of the vertical plate 122, so that the two contact springs 139 can be in contact with the conductive shafts 136. Therefore, the two contact springs 139 of the two sets of transmission assemblies 134 are connected in parallel between the two conductive shafts 136, when the two conductive tentacles 140 of at least one contact spring 139 are in one-to-one contact with the two conductive shafts 136, the detection circuit 135 is a pass-through, the detection element 137 sends a first signal to the controller 150, and the controller 150 controls the switching-on/off mechanism 170 to be in a switching-off state. When at least one conductive tentacle 140 of each contact spring 139 is out of contact with the corresponding conductive shaft 136, the detection circuit 135 is open, the detection element 137 sends a second signal to the controller 150, and the controller 150 controls the switching mechanism 170 to be in a state of allowing switching on.

Referring to fig. 6 and 10, two sets of transmission assemblies 134 are respectively disposed on two opposite sides of the vertical plate 122. The turning button 138 on one side of the vertical plate 122 is rotated 180 ° relative to the turning button 138 on the other side of the vertical plate 122, so as to correspond to the two elastic sheets 111 in the wiring mechanism 110, respectively. The elastic sheets 111 and the rotating buttons 138 on the two sides of the vertical plate 122 are arranged in the above manner, so that the two external leads 200 can be connected to the circuit breaker 100 with the electric shock prevention function in a staggered state, the wiring positions of the external leads 200 can be reasonably arranged, and the size of the circuit breaker can be reduced to a certain extent.

In this embodiment, the circuit breaker 100 with the electric shock protection function further includes an electric operating mechanism 160, the controller 150 is electrically connected to the electric operating mechanism 160, the electric operating mechanism 160 is connected to the opening/closing mechanism 170, and the electric operating mechanism 160 drives the opening/closing mechanism 170 to open or release the locking of the opening/closing state after receiving a control command from the controller 150.

In addition, in the present embodiment, since the circuit breaker 100 with the electric shock prevention function only needs to connect two external wires 200, the circuit breaker 100 with the electric shock prevention function is only provided with two wiring mechanisms 110 and two sets of transmission assemblies 134. In other embodiments, the circuit breaker 100 with the electric shock protection function may also be a circuit breaker that has three external wires 200, in which case, the circuit breaker needs to have three wiring mechanisms 110 and three sets of transmission assemblies 134, and the vertical plates 122 are disposed between adjacent transmission assemblies 134 to separate them from each other.

The operation principle and the operation process of the circuit breaker 100 having the electric shock preventing function are as follows:

when two external wires 200 are not connected to the wiring mechanism 110, two conductive contact fingers 140 of two contact springs 139 are in one-to-one contact with two conductive shafts 136, that is, two contact springs 139 are connected in parallel between the two conductive shafts 136. At this time, the power source 132, the conductive shaft 136 and the detection circuit 135 where the contact spring 139 is located are turned on, the detection element 137 sends a first signal to the controller 150, and the controller 150 controls the opening/closing mechanism 170 to be in the opening state by controlling the electric operating mechanism 160.

When an external lead 200 is connected to the corresponding connection mechanism 110, the external lead 200 is clamped between the elastic piece 111 and the connection board 113, the second end 114 of the elastic piece 111 moves in the mounting hole 115 in a direction away from the connection board 113 under the action of the external lead 200, and the second end 114 directly abuts against the abutting portion 144 of the knob 138, so that the abutting portion 144 rotates around the mounting shaft 124 under the pushing of the second end 114, and the pressing table 143 on the knob 138 is driven to rotate. The pressing table 143 presses the contacted conductive tentacles 140, thereby driving the conductive tentacles 140 to rotate to be out of contact with the corresponding conductive shafts 136, and disconnecting the electrical connection. However, at this time, since the other wiring mechanism 110 is not connected to the external connection wire 200, the two conductive contact arms 140 of the contact spring 139 in the corresponding transmission assembly 134 are still in contact with the two conductive shafts 136 in a one-to-one correspondence manner, the detection circuit 135 is still open, the detection element 137 still sends the first signal to the controller 150, and the controller 150 controls the switching-on/off mechanism 170 to be in the switching-off state by controlling the electric operating mechanism 160, that is, the switching-on/off mechanism 170 is still locked in the switching-off state, thereby preventing the wiring personnel from getting an electric shock and improving the safety.

When two external wires 200 are connected to the corresponding connection mechanism 110, the rotation buttons 138 of the two transmission assemblies 134 are abutted by the elastic sheets 111 to rotate, so that the pressing platforms 143 on the two rotation buttons 138 respectively press the contacted conductive contact fingers 140, one conductive contact finger 140 of each contact spring 139 is separated from the corresponding conductive shaft 136, that is, the two contact springs 139 are simultaneously disconnected from the conductive shaft 136. At this time, the detection circuit 135 is an open circuit, the detection element 137 sends a second signal to the controller 150, and the controller 150 controls the opening and closing mechanism 170 to be in a closing-allowable state by controlling the electric operating mechanism 160, that is, the opening and closing state of the opening and closing mechanism 170 is unlocked, so that the circuit breaker 100 with the electric shock prevention function is allowed to perform a closing operation through remote control or button touch, and normal use of the circuit breaker is ensured.

In summary, the circuit breaker 100 with the electric shock prevention function is provided with the detection mechanism 130, and the detection mechanism 130 is used for detecting whether at least two external wires 200 are connected to the wiring mechanism 110. When detecting that at least one external conductor 200 is in a non-access state, the detection mechanism 130 sends a first signal to the controller 150, and when the controller 150 receives the first signal, the switching-on/off mechanism 170 is controlled to be in a switching-off state, so that before the connection staff completes the access of the external conductors 200 of all the connection mechanisms 110, the circuit breaker 100 with the electric shock prevention function is always in the switching-off state, the circuit breaker 100 with the electric shock prevention function is prevented from switching on the switching-on/off mechanism 170 due to remote control or button mis-touch and other factors, so that the terminals are electrified, and electric shock accidents are prevented from being caused. Meanwhile, when the detection mechanism 130 detects that the at least two external wires 200 are both in the connection state, the detection mechanism 130 sends a second signal to the controller 150, and when the controller 150 receives the second signal, the switching-on/off mechanism 170 is controlled to be in the state of allowing switching on. Therefore, the circuit breaker 100 with the electric shock prevention function can ensure that the switching on/off mechanism 170 is always in the switching off state before all the wiring mechanisms 110 complete the access of the external conductors 200, thereby reducing the probability of electric shock accidents occurring when an operator performs wiring, and enabling the switching on/off mechanism 170 to allow switching on after all the wiring mechanisms 110 complete the access of the external conductors 200 without hindering the normal use of the circuit breaker 100 with the electric shock prevention function after the wiring. The probability of electric shock accidents occurring when the circuit breaker 100 with the electric shock prevention function is wired is low, the safety of the circuit breaker 100 with the electric shock prevention function is high, and the normal use of the circuit breaker 100 with the electric shock prevention function can be ensured.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A circuit breaker with an anti-electric-shock function is characterized by comprising a wiring mechanism, a detection mechanism, a controller and a switching-on/off mechanism;

the number of the wiring mechanisms is at least two, and the at least two wiring mechanisms are used for correspondingly connecting at least two external wires one by one;

the detection mechanism is used for detecting whether at least two external leads are connected to the wiring mechanism or not, and sending a first signal when at least one external lead is in a non-connected state, and sending a second signal when at least two external leads are in a connected state;

the controller is connected to the detection mechanism and the on-off switching mechanism at the same time, and is configured to:

when the first signal is received, controlling the switching-on/switching-off mechanism to be in a switching-off state;

and when the second signal is received, controlling the switching-on/switching-off mechanism to be in a switching-on allowing state.

2. The circuit breaker with anti-electric shock function according to claim 1, wherein said detection mechanism comprises a base, at least two sets of transmission components, a detection circuit and a detection element;

the at least two groups of transmission assemblies are respectively arranged on the base and correspond to the at least two wiring mechanisms one to one, when the corresponding wiring mechanisms are not connected with the external lead, the transmission assemblies are connected with the detection circuit, and when the corresponding wiring mechanisms are connected with the external lead, the transmission assemblies can be disconnected with the detection circuit under the driving of the wiring mechanisms;

when at least one group of the transmission assemblies is connected with the detection circuit, the detection circuit is a passage; when all the transmission assemblies are disconnected from the detection circuit, the detection circuit is open;

the detection element is connected to the detection circuit and used for detecting the on-off of the detection circuit, and when the detection element detects that the detection circuit is a passage, the detection element sends the first signal to the controller; and when the detection element detects that the detection circuit is broken, sending the second signal to the controller.

3. The circuit breaker with electric shock protection function according to claim 2, wherein said detection circuit comprises a power source and two conductive shafts fixed to said base;

the two conductive shafts are connected to the anode and the cathode of the power supply in a one-to-one correspondence mode, at least two groups of transmission assemblies are connected between the two conductive shafts in parallel, and when at least one group of transmission assemblies are connected with the two conductive shafts simultaneously, the detection circuit is a passage; when all the transmission assemblies are disconnected from at least one conductive shaft, the detection circuit is open.

4. The circuit breaker with the electric shock preventing function according to claim 3, wherein the transmission assembly comprises a rotating button and a contact spring, the rotating button is rotatably connected to the base, the contact spring has two conductive contact fingers, and when the wiring mechanism is not connected to the external conductor, the two conductive contact fingers are respectively in contact with the two conductive shafts in a one-to-one correspondence manner; when the wiring mechanism is connected with the external lead, the rotating button can be driven by the wiring mechanism to rotate so as to push the conductive tentacles to rotate, so that at least one conductive tentacle is separated from contact with the conductive shaft;

the at least two contact springs are connected between the two conductive shafts in parallel, and when the two conductive tentacles of the at least one contact spring are in one-to-one contact with the two conductive shafts, the detection circuit is a passage; when at least one conductive tentacle of each contact spring is separated from contact with the corresponding conductive shaft, the detection circuit is an open circuit.

5. The circuit breaker with anti-shock function according to claim 4, wherein said contact spring comprises a torsion spring, and a torsion arm of said torsion spring is said conductive tentacle.

6. The circuit breaker with the electric shock preventing function according to claim 4, wherein two of the electrically conductive tentacles of the contact spring are located between two of the electrically conductive shafts, and when the wiring mechanism is connected to the external conductor, the rotating button can be driven by the wiring mechanism to rotate to push one of the electrically conductive tentacles of the contact spring to rotate, so that the electrically conductive tentacle is out of contact with the corresponding electrically conductive shaft.

7. The circuit breaker with anti-electric-shock function according to claim 4, characterized in that the turn button comprises an installation part and a butt part which are connected with each other, the installation part and the butt part are made of insulating materials, the installation part is rotatably connected with the base, the installation part is provided with a pressing platform for driving the rotation of the conductive tentacle, when the wiring mechanism is connected into the external lead, the wiring mechanism is supported against the butt part to drive the installation part to rotate, so as to drive the pressing platform to rotate to press the conductive tentacle, and further drive the conductive tentacle to rotate.

8. The circuit breaker with the electric shock preventing function according to claim 4, wherein the base comprises a vertical plate, the vertical plate is disposed between two sets of the transmission assemblies to separate two contact springs, and two conductive shafts penetrate through the vertical plate.

9. The circuit breaker with the electric shock prevention function according to claim 4, wherein the wiring mechanism comprises a spring plate and a wiring board which are connected with each other, the spring plate and the wiring board are both mounted on the base, the spring plate and the wiring board are used for clamping the external lead together, and when the external lead is in an access state, the spring plate can deform under the action of the external lead to support the rotating button, so that the rotating button rotates.

10. The circuit breaker with the electric shock preventing function according to claim 9, wherein the elastic piece has a first end and a second end which are opposite to each other, the first end is provided with a mounting hole for the external lead to extend into, the elastic piece is bent to enable the second end to pass through the mounting hole, the wiring board passes through the mounting hole, the second end and the wiring board are used for clamping the external lead together, and when the external lead is in an access state, the second end can move in the mounting hole under the action of the external lead to abut against the rotary knob so as to enable the rotary knob to rotate.

Images