CN215183788U - Remote-error-preventing switching-on structure of circuit breaker - Google Patents

Abstract

The utility model provides a remote error-preventing switching-on structure of a circuit breaker, which comprises a circuit breaker body, wherein a conductive elastic component is arranged in the circuit breaker body, and a fixed support arm of the elastic component is fixedly arranged and electrically contacted with a first electric contact part of a circuit board; the shifting piece can be switched between a manual position and an automatic position to enable the first elastic support arm of the elastic component to be switched between being electrically contacted with the second electric contact part and being separated from the second electric contact part; when the switch-on and switch-off switching operation is carried out by the handle, the second elastic support arm of the elastic component can be switched between the electric contact with the third electric contact part and the separation from the third electric contact part; the circuit board confirms the current state by detecting an electric signal between the first electric contact and the second electric contact and detecting an electric signal between the first electric contact and the third electric contact; so as to prevent remote false switching-on operation.

Description

Remote-error-preventing switching-on structure of circuit breaker

Technical Field

The utility model relates to a circuit breaker field, concretely relates to circuit breaker prevent long-range mistake combined floodgate structure.

Background

With the gradual realization of intellectualization of power supply networks in China, the requirements of national power grid companies on power supply equipment are more and more intelligentized. In current power supply network terminal, use the most still traditional circuit breaker, also have some intelligent power grid terminals to use intelligent circuit breaker, intelligent circuit breaker except need realize fault tripping protection basic function such as short circuit, overload, still need realize the real-time supervision power consumption condition, collect power consumption information, remote control circuit breaker carries out intelligent functions such as separating brake, combined floodgate operation to the circuit breaker.

In the prior art, a structure for judging the opening and closing positions generally adopts a microswitch, for example, the microswitch is triggered when a handle is switched on, so that the microswitch is judged to be in the opening position, and the microswitch is judged to be in the closing position when the microswitch is switched off. The structure for switching between the manual position and the automatic position generally employs a dial switch. However, the micro-switches and the dial switches are bulky, so that the circuit breaker is difficult to realize a miniaturized design.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a solve above-mentioned problem, provide a circuit breaker prevent long-range mistake combined floodgate structure, have simple structure, characteristics with low costs.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

a remote-error-switching-on prevention structure of a circuit breaker comprises a circuit breaker body, wherein the circuit breaker body is provided with a handle for switching on and off, a toggle piece for switching a manual position and an automatic position and a circuit board for electric control; the circuit board is provided with a first electric contact part, a second electric contact part and a third electric contact part; the circuit breaker is characterized in that a conductive elastic assembly is further arranged in the circuit breaker body, and the elastic assembly is fixedly and electrically connected with the first electric contact part and is in linkage connection with the handle and the poking piece respectively; when the toggle piece is switched between the manual position and the automatic position, the elastic component can be switched between a contact position for connecting the first electric contact part and the second electric contact part and a separation position for disconnecting the contact; when the switch is switched on and off, the handle can enable the elastic component to be switched between a contact position for connecting the first electric contact part and the third electric contact part and a separation position for disconnecting the contact; the circuit board confirms the current state by detecting an electrical signal between the first electrical contact and the second electrical contact and detecting an electrical signal between the first electrical contact and the third electrical contact.

Further, the elastic component is provided with a fixed support arm, a first elastic support arm and a second elastic support arm, and the fixed support arm is fixedly arranged and electrically contacted with the first electric contact part; the first elastic support arm extends to the position of the shifting piece to form linkage connection with the shifting piece, and when the shifting piece is switched between a manual position and an automatic position, the first elastic support arm can be switched between a contact position electrically contacting the second electric contact part and a separation position separated from the second electric contact part; the second elastic support arm extends to the position of the handle to form linkage connection with the handle, and when the switch-on and switch-off switching operation is performed by the handle, the second elastic support arm can be switched between a contact position electrically contacting the third electric contact part and a separation position separated from the third electric contact part.

Furthermore, the elastic assembly is a torsion spring assembly and comprises a first torsion spring unit and a second torsion spring unit, the coil part of the first torsion spring unit and the coil part of the second torsion spring unit are fixed, the first support arm of the first torsion spring unit and the first support arm of the second torsion spring unit are connected to form the fixed support arm, the second support arm of the first torsion spring unit extends to the toggle part position to form the first elastic support arm, and the second support arm of the second torsion spring unit extends to the handle position to form the second elastic support arm.

Furthermore, a fixed shaft column and a fixed shaft sleeve extend from the outer shell of the circuit breaker body, and the coil part of the first torsion spring unit is sleeved on the fixed shaft column; the coil part of the second torsion spring unit is sleeved on the fixed shaft sleeve, and the rotating shaft of the handle is sleeved in the fixed shaft sleeve.

Furthermore, the torsion spring assembly is integrally manufactured and formed by a single metal wire.

Furthermore, the shifting piece is provided with a butting boss, the first elastic support arm extends to the position of the shifting piece and upwards butts against the butting boss through the elastic force of the first elastic support arm, and when the shifting piece moves away from the free end of the first elastic support arm, the free end of the first elastic support arm is driven to move towards the direction of the second electric contact part and form electric contact with the second electric contact part; when the shifting piece moves towards the free end of the first elastic support arm, the first elastic support arm loses the pressing force of the shifting piece and resets, so that the first elastic support arm is separated from the second electric contact part.

Furthermore, the handle is provided with an abutting step, the second elastic support arm extends to a position between the abutting step and the third electric contact part, and when the handle is shifted towards the third electric contact part, the second elastic support arm is pressed down to be in electric contact with the third electric contact part through the abutting step; when the handle is shifted in a direction deviating from the third electric contact part, the second elastic support arm loses the abutting pressure of the abutting step and resets, so that the second elastic support arm is separated from the third electric contact part.

Furthermore, a jack is formed in the circuit board, the first electric contact part is a conducting ring arranged on the inner wall of the jack, and the fixed support arm is fixedly inserted into the jack and electrically contacted with the conducting ring.

Furthermore, the second electric contact part and the third electric contact part are conductive columns protruding on the circuit board.

Through the utility model provides a technical scheme has following beneficial effect:

the circuit board confirms whether the circuit board is in the automatic position or the manual position currently by detecting an electric signal between the first electric contact and the second electric contact, and detects an electric signal between the first electric contact and the third electric contact to confirm whether the circuit board is in the on-off position or the off-off position currently. The microswitch and the dial switch with larger volume are replaced by the matching of a small-size structure (namely, the elastic component and the electric contact part on the circuit board), so that the space is greatly saved, and the further miniaturization design of the circuit breaker is facilitated; and the layout structure is simple and the cost is low.

Drawings

Fig. 1 is a schematic diagram showing a part of the internal structure of a circuit breaker according to an embodiment;

fig. 2(a) is a first state schematic diagram of a remote false-closing prevention structure of a circuit breaker in an embodiment, which is a perspective schematic diagram;

FIG. 2(b) is a front view of the structure shown in FIG. 2 (a);

FIG. 3 is a rear view of the structure of FIG. 2 (b);

fig. 4 is a state diagram ii of a remote false switching prevention structure of the circuit breaker in the embodiment;

fig. 5 is a state diagram showing a third schematic diagram of a remote false-closing prevention structure of the circuit breaker in the embodiment;

FIG. 6 is a top view of the mating structure of the circuit board and the spring assembly in an embodiment;

FIG. 7 is a schematic structural view of an elastic member according to an embodiment;

FIG. 8 is a schematic structural view of the elastic member at another angle in the embodiment;

FIG. 9 is a schematic view showing the assembly of the elastic member in the embodiment;

fig. 10 is a schematic circuit diagram of a part of an embodiment.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 9, the remote false switching prevention structure of a circuit breaker provided in this embodiment, specifically, a remote false switching prevention structure of a small (micro) circuit breaker, includes a circuit breaker body 100, where the circuit breaker body 100 has a handle 20 for switching on and off, a toggle 10 for switching between a manual position and an automatic position, and a circuit board 11 for electric control; a first electric contact part (not shown), a second electric contact part 112 and a third electric contact part 113 are arranged on the circuit board 11; specifically, the first electrical contact is located at a middle position between the second electrical contact 112 and the third electrical contact 113, that is, the first electrical contact is disposed in the insertion hole 111 at the middle position between the second electrical contact 112 and the third electrical contact 113, the second electrical contact 112 corresponds to the toggle piece 10, and the third electrical contact 113 corresponds to the handle 20.

The circuit breaker body 100 is also internally provided with a conductive elastic assembly 30, the elastic assembly 30 is fixedly and electrically connected with the first electric contact part and is respectively in linkage connection with the handle 20 and the toggle piece 10; specifically, in the embodiment, the elastic component 30 has a fixed arm 31, a first elastic arm 32 and a second elastic arm 33, and the fixed arm 31 is fixedly disposed and electrically contacts the first electrical contact, so that the fixed arm 31 is always electrically contacted with the first electrical contact.

The first elastic arm 32 extends to the position of the toggle piece 10 to form linkage connection with the toggle piece 10, and when the toggle piece 10 is switched between the manual position and the automatic position, the elastic assembly 30 can be switched between a contact position for connecting the first electric contact part and the second electric contact part 112 and a separation position for disconnecting the contact; specifically, when the toggle member 10 is switched between the manual position and the automatic position, the first elastic arm 32 can be switched between a contact position electrically contacting the second electrical contact 112 (i.e., connecting the first electrical contact with the second electrical contact 112) and a separation position separated from the second electrical contact 112 (i.e., disconnecting the contact); in this embodiment, as shown in fig. 2(a) and 2(b), the toggle member 10 is in the automatic position, and the first elastic arm 32 is in the separated position separated from the second electrical contact portion 112; when the toggle member 10 is toggled from the automatic position to the manual position (i.e. toggled to the right to the position of fig. 5 based on fig. 2(a) and fig. 2 (b)), the first elastic arm 32 is driven to electrically contact the second electrical contact 112, and at this time, the first electrical contact and the second electrical contact 112 are conducted by the elastic element 30. When the toggle member is toggled from the manual position to the automatic position (i.e. from fig. 5 to the left to the state of fig. 2(a) and fig. 2 (b)), the first elastic arm 32 is separated from the second electrical contact 112, and the first electrical contact and the second electrical contact 112 are not electrically connected. Of course, the switch may be turned off when the switch is shifted from the automatic position to the manual position, or turned on when the switch is shifted from the manual position to the automatic position.

Specifically, the second elastic arm 33 extends to the position of the handle 20 to form a linkage connection with the handle 20. The handle 20 can switch the elastic component 30 between a contact position for connecting the first electric contact part and the third electric contact part 113 and a separation position for disconnecting the contact when switching on and off; the handle 20 is capable of switching the second resilient arm 33 between a contact position in which the third electrical contact 113 is electrically contacted (i.e., the first electrical contact and the third electrical contact 113 are connected) and a separated position in which the third electrical contact 113 is separated (i.e., the contact is disconnected) during the switching operation of the switching mechanism. In this embodiment, the handle is shown in FIG. 2 in the open position, while the second resilient arm 33 is in the disengaged position, separated from the third electrical contact 113; when the handle 20 is switched on (i.e. the handle 20 is moved to the right based on fig. 2(a) and fig. 2(b) to the state shown in fig. 4), the second elastic arm 33 is driven to electrically contact the third electrical contact 113, and at this time, the first electrical contact and the third electrical contact 113 are conducted by the elastic component 30. When the handle 20 is operated to open (i.e. the handle 20 is moved to the left based on fig. 4 to the state shown in fig. 2(a) and fig. 2 (b)), the second resilient arm 33 is separated from the third electrical contact 113, and the first electrical contact and the third electrical contact 113 are not electrically connected. Of course, the opposite is also possible.

The circuit board 11 confirms the current state by detecting the electrical signal between the first electrical contact and the second electrical contact 112 and detecting the electrical signal between the first electrical contact and the third electrical contact 113. As in this embodiment, when the circuit board 11 detects an electrical signal (e.g., voltage, current, etc.) between the first electrical contact and the second electrical contact 112, it indicates that the circuit board is in the manual position, i.e., the state shown in fig. 5. When the electric signal is not detected, the automatic position is the state shown in fig. 2(a) and 2 (b).

If the circuit board 11 detects an electrical signal between the first electrical contact and the third electrical contact 113, it indicates that the switch-on position is present, i.e. the state shown in fig. 4. When no electric signal is detected, the state is the open position, i.e., the state shown in fig. 2(a) and 2 (b).

When the circuit board 11 is in the automatic position, the circuit board receives and executes a remotely input switching-on/off command, so that normal remote control is realized; when the circuit board 11 is in the manual position, the remotely input closing command is not executed, and remote false closing is well prevented. This control is prior art and will not be described in detail herein.

Through the design of the remote false switching-on prevention structure of the circuit breaker, the microswitch and the dial switch with larger volume are replaced by the matching of a small-size structure (namely, the electric contact part on the elastic component 30 and the circuit board 11), so that the space is greatly saved, and the further miniaturization design of the circuit breaker is facilitated; and the layout structure is simple and the cost is low.

Specifically, in this embodiment, the circuit board 11 is an existing circuit board structure, and the electrical signal detection circuit, the control circuit and the communication circuit integrated in the circuit board 11 are all in the prior art, wherein a schematic circuit block diagram of the electrical signal detection circuit is shown in fig. 10, S1 represents switching on and off of the handle 20, and S2 represents manual and automatic switching. The present solution is only to achieve the cooperation with the spring assembly 30 on the circuit board 11 at the first electrical contact, the second electrical contact 112 and the third electrical contact 113.

Further, the elastic assembly 30 is a torsion spring assembly integrally formed by a single metal wire, and includes a first torsion spring unit 34 and a second torsion spring unit 35, a coil portion of the first torsion spring unit 34 and a coil portion of the second torsion spring unit 35 are fixed, specifically, a fixed shaft post 110 and a fixed shaft sleeve 120 extend from an outer housing 1001 of the circuit breaker body 100, and the coil portion of the first torsion spring unit 34 is sleeved on the fixed shaft post 110; the coil portion of the second torsion spring unit 35 is sleeved on the fixed shaft sleeve 120, so that the assembly is simple. The rotating shaft of the handle 20 is sleeved in the fixed shaft sleeve 120.

The first arm of the first torsion spring unit 34 and the first arm of the second torsion spring unit 35 are connected (in this embodiment, they are an integral connecting structure) to form the fixed arm 31, that is, the fixed arm 31 is located in the middle of the metal wire; the second arm of the first torsion spring unit 34 extends to the position of the toggle piece 10 to form the first elastic arm 32, and the second arm of the second torsion spring unit 35 extends to the position of the handle 20 to form the second elastic arm 33; the free ends (i.e., outer ends) of the first resilient arm 32 and the second resilient arm 33 are the outer ends of the wire.

By adopting the torsion spring assembly, the structure is simple, the preparation and the forming are easy, the assembly is simple and convenient, and the action stroke is stable. Of course, in other embodiments, the torsion spring assembly may also be formed by splicing multiple sections of metal wires, for example, the first torsion spring unit 34 is made of one section of metal wire, the second torsion spring unit 35 is made of another section of metal wire, and the first arm of the first torsion spring unit 34 and the first arm of the second torsion spring unit 35 are fixed by a fixing means such as welding in the prior art. Alternatively, the elastic component 30 may also be of other types, such as a V-shaped elastic sheet, in which the middle section of the V-shaped elastic sheet is used as the fixed arm 31, and the two end sections are used as the first elastic arm 32 and the second elastic arm 33, respectively, and so on.

Further, in this embodiment, the specific matching manner of the toggle member 10 and the first elastic arm 32 is as follows: referring to fig. 2(b), 4 and 5, the toggle member 10 is provided with an abutting boss 101, the first elastic arm 32 extends to the position of the toggle member 10 and abuts on the abutting boss 101 upwards by its own elastic force, and when the toggle member 10 moves away from the free end of the first elastic arm 32, in fig. 2(b), the free end of the first elastic arm 32 moves to the left, and the toggle member 10 moves to the right (in this embodiment, the automatic position is switched to the manual position); driving the free end of the first resilient arm 32 towards (i.e. downwards) and into electrical contact with said second electrical contact 112; when the toggle 10 moves toward the free end of the first elastic arm 32 (in this embodiment, the toggle 10 is switched from the manual position to the automatic position), the first elastic arm 32 loses the pressing force of the abutment boss 101 of the toggle 10 and is reset, so as to be separated from the second electrical contact 112. The matching structure of the first elastic support arm 32 and the toggle piece 10 is simple, and the assembly operation is simple and convenient. Of course, in other embodiments, the assembling structure of the toggle member 10 and the first elastic arm 32 is not limited to this.

Further, in this embodiment, the specific matching manner of the handle 20 and the second elastic arm 33 is as follows: referring to fig. 2(b), fig. 4 and fig. 5, an abutting step 201 is provided on the handle 20, the second elastic arm 33 extends to between the abutting step 201 and the third electrical contact 113, and when the handle 20 is toggled towards the third electrical contact 113 (in this embodiment, from the open position to the closed position), the second elastic arm 33 is pressed down by the abutting step 201 to electrically contact the third electrical contact 113; when the handle 20 is shifted away from the third electrical contact 113 (in this embodiment, shifted from the switch-on position to the switch-off position), the second elastic arm 33 loses the pressing force of the abutting step 201 and is reset, so as to separate from the third electrical contact 113. The matching structure of the second elastic support arm 33 and the handle 20 is simple, and the assembly operation is simple and convenient. Of course, in other embodiments, the configuration of the second resilient arm 33 and the handle 20 is not limited thereto.

Further, in this embodiment, the circuit board 11 is provided with a jack 111, the first electrical contact portion is a conductive ring (not shown) disposed on an inner wall of the jack 111, and the fixed arm 31 is fixedly inserted into the jack 111 and electrically contacts with the conductive ring; thereby realizing the fixed assembly, specifically the detachable fixed assembly, of the fixed support arm 31; the assembly structure is simple, the disassembly operation is easy, and the disassembly can be realized by pulling out the pull-out part. Of course, in other embodiments, the fixing and assembling manner of the fixing arm 31 is not limited to this, and the fixing manner may be a non-detachable welding fixing manner directly connected to the first electrical contact portion.

Further, in this embodiment, the second electrical contact 112 and the third electrical contact 113 are conductive posts protruding and disposed on the circuit board 11. The first elastic arm 32 and the second elastic arm 33 are in electrical contact by abutting against the corresponding conductive posts, and the stroke of the first elastic arm 32 and the second elastic arm 33 is not limited. Of course, in other embodiments, the structures of the second electrical contact 112 and the third electrical contact 113 are not limited thereto.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a circuit breaker prevent long-range mistake combined floodgate structure which characterized in that: the circuit breaker comprises a circuit breaker body, wherein the circuit breaker body is provided with a handle for switching on and off, a toggle piece for switching a manual position and an automatic position and a circuit board for electric control; the circuit board is provided with a first electric contact part, a second electric contact part and a third electric contact part; the circuit breaker is characterized in that a conductive elastic assembly is further arranged in the circuit breaker body, and the elastic assembly is fixedly and electrically connected with the first electric contact part and is in linkage connection with the handle and the poking piece respectively;

when the toggle piece is switched between the manual position and the automatic position, the elastic component can be switched between a contact position for connecting the first electric contact part and the second electric contact part and a separation position for disconnecting the contact;

when the switch is switched on and off, the handle can enable the elastic component to be switched between a contact position for connecting the first electric contact part and the third electric contact part and a separation position for disconnecting the contact;

the circuit board confirms the current state by detecting an electrical signal between the first electrical contact and the second electrical contact and detecting an electrical signal between the first electrical contact and the third electrical contact.

2. The remote mis-closing prevention structure of the circuit breaker as claimed in claim 1, wherein: the elastic component is provided with a fixed support arm, a first elastic support arm and a second elastic support arm, and the fixed support arm is fixedly arranged and electrically contacted with the first electric contact part; the first elastic support arm extends to the position of the shifting piece to form linkage connection with the shifting piece, and when the shifting piece is switched between a manual position and an automatic position, the first elastic support arm can be switched between a contact position electrically contacting the second electric contact part and a separation position separated from the second electric contact part; the second elastic support arm extends to the position of the handle to form linkage connection with the handle, and when the switch-on and switch-off switching operation is performed by the handle, the second elastic support arm can be switched between a contact position electrically contacting the third electric contact part and a separation position separated from the third electric contact part.

3. The remote mis-closing prevention structure of the circuit breaker as claimed in claim 2, wherein: the elastic assembly is a torsion spring assembly and comprises a first torsion spring unit and a second torsion spring unit, wherein the coil part of the first torsion spring unit and the coil part of the second torsion spring unit are fixed, a first support arm of the first torsion spring unit and a first support arm of the second torsion spring unit are connected to form the fixed support arm together, a second support arm of the first torsion spring unit extends to the toggle part position to form the first elastic support arm, and a second support arm of the second torsion spring unit extends to the handle position to form the second elastic support arm.

4. The remote mis-closing prevention structure of a circuit breaker as claimed in claim 3, wherein: a fixed shaft column and a fixed shaft sleeve extend from the outer shell of the circuit breaker body, and a coil part of the first torsion spring unit is sleeved on the fixed shaft column; the coil part of the second torsion spring unit is sleeved on the fixed shaft sleeve, and the rotating shaft of the handle is sleeved in the fixed shaft sleeve.

5. The remote mis-closing prevention structure of a circuit breaker as claimed in claim 3, wherein: the torsion spring assembly is integrally manufactured and formed by a single metal wire.

6. The remote mis-closing prevention structure of the circuit breaker according to any one of claims 2 to 5, wherein: the shifting piece is provided with a butting boss, the first elastic support arm extends to the position of the shifting piece and upwards butts against the butting boss through the elastic force of the first elastic support arm, and when the shifting piece moves away from the free end of the first elastic support arm, the free end of the first elastic support arm is driven to move towards the direction of the second electric contact part and form electric contact with the second electric contact part; when the shifting piece moves towards the free end of the first elastic support arm, the first elastic support arm loses the pressing force of the shifting piece and resets, so that the first elastic support arm is separated from the second electric contact part.

7. The remote mis-closing prevention structure of the circuit breaker according to any one of claims 2 to 5, wherein: the handle is provided with a butting step, the second elastic support arm extends to a position between the butting step and the third electric contact part, and when the handle is shifted towards the direction of the third electric contact part, the second elastic support arm is pressed downwards to be in electric contact with the third electric contact part through the butting step; when the handle is shifted in a direction deviating from the third electric contact part, the second elastic support arm loses the abutting pressure of the abutting step and resets, so that the second elastic support arm is separated from the third electric contact part.

8. The remote mis-closing prevention structure of the circuit breaker according to claim 1 or 2, wherein: the circuit board is provided with a jack, the first electric contact part is a conducting ring arranged on the inner wall of the jack, and the elastic component is fixedly inserted into the jack and electrically contacted with the conducting ring.

9. The remote mis-closing prevention structure of the circuit breaker as claimed in claim 1, wherein: and the second electric contact part and the third electric contact part are conductive columns which are arranged on the circuit board in a protruding mode.

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