CN109461635B - Sliding contact device and safety type circuit breaker - Google Patents
Sliding contact device and safety type circuit breaker Download PDFInfo
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- CN109461635B CN109461635B CN201811633083.2A CN201811633083A CN109461635B CN 109461635 B CN109461635 B CN 109461635B CN 201811633083 A CN201811633083 A CN 201811633083A CN 109461635 B CN109461635 B CN 109461635B
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- 230000007704 transition Effects 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 description 20
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/54—Manual reset mechanisms which may be also used for manual release actuated by tumbler
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/20—Terminals; Connections
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- Breakers (AREA)
Abstract
The invention discloses a sliding contact device and a safety type circuit breaker, and relates to the field of circuit breaking apparatuses. The sliding contact device comprises a first contact, a second contact, a first conductive member and a second conductive member. The first contact is connected with the first conductive piece, the second contact is connected with the second conductive piece and is propped against the first contact, the first conductive piece, the first contact, the second contact and the second conductive piece are combined to form a conductive path, and the first contact can slide relative to the second contact when the first conductive piece is far away from the second conductive piece, so that the conductive path is lengthened. Compared with the prior art, the sliding contact device provided by the invention has the advantages that the first contact and the second contact which are in sliding connection are adopted, so that the occurrence of electric arc caused by open circuit can be prevented, potential safety hazards are avoided, the safety hazard is avoided, the occupied space is small, and the practicability is strong.
Description
Technical Field
The invention relates to the field of circuit breaking instruments, in particular to a sliding contact device and a safety circuit breaker.
Background
In order to prevent potential safety hazards caused by electric arcs, the traditional circuit breaker can generate electric arcs in the circuit breaking process, people increase arc extinguishing grids in the circuit breaker, and the arc is extinguished by utilizing a magnetic blowing and air blowing technology, but in this way, the volume of the circuit breaker is necessarily increased, so that the circuit breaker is not applicable to a specific small space area any more, the electric arcs cannot be eliminated from the source, and the electric arcs have certain potential safety hazards before being blown out, so that the safety is poor.
In view of this, it is important to design and manufacture a safe and reliable sliding contact device and a safety circuit breaker, especially in the production of the circuit breaker.
Disclosure of Invention
The invention aims to provide a sliding contact device which has a simple structure, can prevent the occurrence of electric arcs caused by circuit breaking, avoids potential safety hazards, is safe and reliable, occupies small space and has strong practicability.
The invention further aims to provide the safe circuit breaker which is simple in structure, capable of preventing the occurrence of electric arcs caused by circuit breaking, safe and reliable, small in occupied space, strong in practicability and wide in application range, and potential safety hazards are avoided.
The invention is realized by adopting the following technical scheme.
The utility model provides a slidingtype contact device, includes first contact, second contact, first electrically conductive piece and second electrically conductive piece, and first contact is connected with first electrically conductive piece, and the second contact is connected with the second electrically conductive piece, and supports with first contact and hold, and first electrically conductive piece, first contact, second contact and second electrically conductive piece combination form conductive route, and first contact can be kept away from the second electrically conductive piece and slide relative to the second contact to make conductive route extension.
Further, the first contact is relatively provided with a first end and a second end, the first end is connected with the first conductive piece and abuts against the second contact, and the second contact can be close to the second end when the first conductive piece is far away from the second conductive piece.
Further, the resistance of the first contact gradually increases in a direction from the first end to the second end.
Further, the first contact is in a strip shape, and the first end is welded on the first conductive piece.
Further, the second conductive piece comprises a mounting part, a connecting part and a stopping part, wherein the mounting part is connected with the stopping part through the connecting part, the cross section area of the mounting part and the cross section area of the stopping part are both larger than those of the connecting part, and the second contact is in sliding connection with the connecting part and selectively propped against the stopping part.
Further, the sliding contact device further comprises an elastic piece, the elastic piece is sleeved outside the connecting portion, one end of the elastic piece is propped against the mounting portion, the other end of the elastic piece is propped against the second contact, and the elastic piece can apply elastic force to the second contact when the first contact slides relative to the second contact, so that the second contact and the first contact can keep in an attached state.
Further, the second contact comprises a propping part and a limiting part, a sliding groove is arranged in the propping part, the limiting part is connected with the propping part and is arranged at the opening of the sliding groove, the connecting part is in sliding connection with the limiting part, the stopping part stretches into the sliding groove and selectively propped against the limiting part, and the propping part is in sliding connection with the first contact.
Further, the connecting portion is arranged in the middle of the stopping portion, the limiting portion is provided with a central hole, the central hole is communicated with the sliding groove, the connecting portion is arranged in the central hole in a sliding mode, and the cross section area of the stopping portion is larger than that of the central hole.
Further, the abutting part is in a block shape, the abutting part is adjacently provided with an abutting surface and a connecting surface, the abutting surface abuts against the first contact, the connecting surface is close to the first conductive piece, and the abutting surface and the connecting surface are in arc transition.
The utility model provides a safe type circuit breaker, includes foretell slip type contact device, this slip type contact device includes first contact, second contact, first electrically conductive piece and second electrically conductive piece, and first contact is connected with first electrically conductive piece, and the second contact is connected with the second electrically conductive piece, and supports with first contact and hold, and first electrically conductive piece, first contact, second contact and second electrically conductive piece combination form the electrically conductive route, and first contact can be kept away from the second electrically conductive piece and slide relative to the second contact to make the electrically conductive route extension.
The sliding contact device and the safety circuit breaker provided by the invention have the following beneficial effects:
the sliding contact device comprises a first contact, a second contact, a first conductive piece and a second conductive piece, wherein the first contact is connected with the first conductive piece, the second contact is connected with the second conductive piece and is propped against the first contact, a conductive path is formed by combining the first conductive piece, the first contact, the second contact and the second conductive piece, and the first contact can slide relative to the second contact when the first conductive piece is far away from the second conductive piece so as to lengthen the conductive path. Compared with the prior art, the sliding contact device provided by the invention has the advantages that the first contact and the second contact which are in sliding connection are adopted, so that the occurrence of electric arc caused by open circuit can be prevented, potential safety hazards are avoided, the safety hazard is avoided, the occupied space is small, and the practicability is strong.
The safety type circuit breaker provided by the invention comprises the sliding contact device, has a simple structure, can prevent the occurrence of electric arc caused by circuit breaking, avoids potential safety hazard, is safe and reliable, occupies small space, and has strong practicability and wide application range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a safety circuit breaker according to a first embodiment of the present invention in a normal state;
fig. 2 is a schematic structural view of a sliding contact device according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of connection between a second conductive member and a second contact in the sliding contact apparatus according to the first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a safety circuit breaker according to a first embodiment of the present invention during a circuit breaking process;
fig. 5 is a schematic structural diagram of a safety circuit breaker according to a first embodiment of the present invention when the circuit breaker is about to complete a circuit breaking;
fig. 6 is a schematic structural diagram of the safety circuit breaker according to the first embodiment of the present invention after the circuit breaking is completed;
fig. 7 is a schematic structural diagram of a safety circuit breaker according to a second embodiment of the present invention in a normal state.
Icon: 10-safety circuit breaker; 100-sliding contact arrangement; 110-a first contact; 111-a first end; 112-a second end; 120-second contacts; 121-a holding portion; 122-limit part; 123-sliding grooves; 124-a central bore; 125-abutment surface; 126-interface; 130-a first conductive member; 140-a second conductive member; 141-a mounting portion; 142-a connection; 143-a stop; 150-an elastic member; 200-tripping switch; 300-a housing; 400-a first connection terminal; 500-second connection terminals; 600-closing spanner; 700-trip mechanism.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "upper", "lower", "horizontal", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.
First embodiment
Referring to fig. 1, an embodiment of the present invention provides a safety circuit breaker 10 for automatically cutting off a circuit when a fault such as serious overload or short circuit occurs, so as to ensure electrical safety. The electric arc protection device is simple in structure, capable of preventing occurrence of electric arcs caused by circuit breaking, safe and reliable, small in occupied space, high in practicality and wide in application range, and potential safety hazards are avoided.
The safety circuit breaker 10 includes a sliding contact apparatus 100, a trip switch 200, a housing 300, a first connection terminal 400, a second connection terminal 500, a closing wrench 600, and a trip mechanism 700. The sliding contact apparatus 100, the trip switch 200, the first connection terminal 400, the second connection terminal 500, and the trip mechanism 700 are all installed in the housing 300 to be shielded and protected by the housing 300. The first connection terminal 400 and the second connection terminal 500 are relatively installed at both ends of the housing 300, and the sliding contact device 100 and the trip switch 200 are connected to the first connection terminal 400, and the first connection terminal 400 is connected to an external power source or an electric appliance. One end of the second connection terminal 500 is connected to the sliding contact device 100, and the other end is connected to an electric appliance or an external power source. The sliding contact device 100 is connected with the tripping mechanism 700, and the tripping switch 200 can push the tripping mechanism 700 to drive the tripping mechanism 700 to rotate when a circuit flows excessively, so that the sliding contact device 100 is separated, the circuit is disconnected, and in the process, the tripping mechanism 700 pushes the tripping switch 200 to reset the tripping switch 200 to wait for the next closing. The closing wrench 600 is coupled to the trip mechanism 700 and is rotatable with respect to the housing 300. The trip mechanism 700 rotates to drive the closing wrench 600 to rotate, namely trip occurs, if the circuit needs to be communicated again, a user can rotate the closing wrench 600 by external force to drive the trip mechanism 700 to rotate, so that the sliding contact device 100 is closed, and the circuit is electrified.
In this embodiment, the first connection terminal 400 is an input terminal, the first connection terminal 400 is connected to an external power source through a wire, the second connection terminal 500 is an output terminal, and the second connection terminal 500 is connected to an electrical appliance through a wire.
Referring to fig. 2, the sliding contact apparatus 100 includes a first contact 110, a second contact 120, a first conductive member 130 and a second conductive member 140. The first contact 110 is connected to the first conductive element 130, the first conductive element 130 can drive the first contact 110 to move, and the second contact 120 is connected to the second conductive element 140 and abuts against the first contact 110. In this embodiment, the first contact 110 is a moving contact, the first conductive member 130 is connected with the trip mechanism 700, and the first conductive member 130 can rotate under the driving of the trip mechanism 700, so as to drive the first contact 110 to approach or depart from the second contact 120, and the first contact 110 is connected with the second connection terminal 500 to be conducted with an electrical appliance. The second contact 120 is a fixed contact, the second contact 120 is connected with the trip switch 200 through the second conductive member 140, and the second contact 120 is connected with the first connection terminal 400 to be conducted with an external power source. The first contact 110 can be attached to or detached from the second contact 120 to enable connection or disconnection between an external power source and an electrical appliance.
It should be noted that the first conductive member 130, the first contact 110, the second contact 120 and the second conductive member 140 combine to form a conductive path (not shown) through which the second connection terminal 500 is electrically connected to the first connection terminal 400, and the conductive path is a circuit portion between the first connection terminal 400 and the second connection terminal 500, and the resistance in the conductive path directly affects the current of the whole circuit. The first contact 110 and the second contact 120 are slidably connected to lengthen or shorten the conductive path, thereby increasing or decreasing the resistance in the conductive path. The first contact 110 is capable of sliding relative to the second contact 120 when the first conductive member 130 is away from the second conductive member 140 to lengthen the conductive path, thereby increasing the resistance in the conductive path and reducing the current through the circuit, and when the first contact 110 is about to be separated from the second contact 120, the conductive path reaches a maximum length, the resistance in the conductive path is maximum, and the current through the conductive path is minimum to prevent arcing when the first contact 110 is separated from the second contact 120.
The first contact 110 is provided with a first end 111 and a second end 112 opposite to each other. The first end 111 is connected to the first conductive member 130 and abuts against the second contact 120, and at this time, the safety circuit breaker 10 is in a normal energized state, the length of the conductive path is the shortest, the resistance in the conductive path is the smallest, which is negligible, and the energizing of the circuit is not affected. When the safety circuit breaker 10 begins to operate, the first conductive member 130 moves away from the second conductive member 140, during which the second contact 120 moves closer to the second end 112, lengthening the conductive path and increasing the resistance in the conductive path and thus increasing the resistance in the overall circuit. Specifically, the first contact 110 is in a strip shape so as to slide on the second contact 120, and the first end 111 is welded to the first conductive member 130 to improve the connection strength.
In this embodiment, the first contact 110 is made of a composite material, the resistance in the first contact 110 gradually increases along the direction from the first end 111 to the second end 112, the resistance at the first end 111 is minimum, and the resistance at the second end 112 is maximum, so that the resistance in the conductive path increases at a very fast speed in the lengthening process of the conductive path, and it is ensured that no arc is generated when the first contact 110 is separated from the second contact 120.
Referring to fig. 3, it is noted that the second conductive member 140 includes a mounting portion 141, a connecting portion 142 and a stopping portion 143. The mounting portion 141 is connected to the stop portion 143 through the connecting portion 142, and in this embodiment, the mounting portion 141 is integrally formed with the stop portion 143 through the connecting portion 142 to improve the connection strength. The cross-sectional area of the mounting portion 141 and the cross-sectional area of the stopping portion 143 are both larger than the cross-sectional area of the connecting portion 142, the second contact 120 is slidably connected with the connecting portion 142 and selectively abuts against the stopping portion 143, and the stopping portion 143 can limit the second contact 120 so as to prevent the second contact 120 from being separated from the second conductive member 140.
In this embodiment, the sliding contact apparatus 100 further includes an elastic member 150, where the elastic member 150 is sleeved outside the connecting portion 142, one end of the elastic member 150 abuts against the mounting portion 141, the other end abuts against the second contact 120, and the elastic member 150 can apply an elastic force to the second contact 120 when the first contact 110 slides relative to the second contact 120, so that the second contact 120 and the first contact 110 keep a contact state. It can be appreciated that, in the tripping process of the tripping mechanism 700, the tripping mechanism 700 drives the first conductive member 130 to rotate, so as to drive the first contact 110 to move along an arc track, in this process, the first contact 110 has a small displacement in a direction vertical to and far away from the second contact 120, the elastic member 150 is always in a compressed state, and the elastic member 150 can drive the second contact 120 to move so as to compensate for the displacement, so that the second contact 120 and the first contact 110 keep a fitting state, and stability of a conductive path is improved.
Notably, the second contact 120 includes a holding portion 121 and a limiting portion 122. The supporting portion 121 is provided with a sliding groove 123 therein, the limiting portion 122 is connected with the supporting portion 121, and is disposed at an opening of the sliding groove 123, and the supporting portion 121 is slidably connected with the first contact 110. The connecting portion 142 is slidably connected with the limiting portion 122, the stopping portion 143 extends into the sliding groove 123 and selectively abuts against the limiting portion 122, and the limiting portion 122 can limit the stopping portion 143 to prevent the stopping portion 143 from being separated from the sliding groove 123. The elastic member 150 abuts against the limiting portion 122 to apply an elastic force to the limiting portion 122 toward the first contact 110, so that the abutting portion 121 maintains an abutting state with the first contact 110.
Specifically, the connecting portion 142 is disposed in the middle of the stopping portion 143, the limiting portion 122 is provided with a central hole 124, the central hole 124 is communicated with the sliding groove 123, the connecting portion 142 is slidably disposed in the central hole 124, and the cross-sectional area of the stopping portion 143 is larger than that of the central hole 124, so as to ensure uniform stress and improve the stability of the second conductive member 140 and the second contact 120 in sliding relatively.
In this embodiment, the abutting portion 121 is in a block shape, and the abutting portion 121 is provided with an abutting surface 125 and a connecting surface 126 adjacent to each other. The abutting surface 125 abuts against the first contact 110, the connecting surface 126 is close to the first conductive member 130, and the abutting surface 125 and the connecting surface 126 are in arc transition, so that friction force during closing is reduced, and resetting of the first contact 110 and the second contact 120 is facilitated.
Referring to fig. 1, 4, 5 and 6, it should be noted that when the current of the circuit does not exceed the preset value, the first end 111 abuts against the second contact 120, and the current output from the external power source passes through the conductive path and is delivered to the electrical appliance, in this process, the length of the conductive path is shortest, so the resistance in the conductive path is smallest, the current is largest, in this embodiment, the resistance in the conductive path is close to zero, and the loss generated by the current passing through the conductive path is negligible, so that the electrical appliance can operate normally.
When the circuit current exceeds a preset value, the trip switch 200 pushes the trip mechanism 700 to rotate, the first conductive member 130 is driven by the trip mechanism 700 to be far away from the second conductive member 140, in the process, the first contact 110 slides relative to the second contact 120, the second contact 120 keeps a propped state with the first contact 110 under the elastic force of the elastic member 150, the conductive path is continuously lengthened, the resistance in the conductive path is continuously increased until the second contact 120 is propped against the second end 112, and at the moment, the length of the conductive path is the longest, so that the resistance in the conductive path is the largest, the current is the smallest, and in the embodiment, the resistance in the conductive path is the largest, so that the current in the circuit is close to zero; then the first conductive member 130 is driven by the trip mechanism 700 to be further away from the second conductive member 140, and the second end 112 is separated from the second contact 120, so that power failure is realized, and in the process, an electric arc is not generated due to the fact that the current in the circuit is close to zero, so that the circuit is safe and reliable.
When the switch-on is performed, the user rotates the switch-on wrench 600 by external force to drive the tripping mechanism 700 to rotate, so as to drive the first conductive member 130 to rotate, so that the second end 112 abuts against the second contact 120, then the first conductive member 130 continues to rotate, the first contact 110 overcomes the elastic force of the elastic member 150 to drive the second contact 120 to move upwards, and finally the first end 111 abuts against the second contact 120, so that reset is completed.
The sliding contact apparatus 100 provided in the embodiment of the present invention includes a first contact 110, a second contact 120, a first conductive member 130 and a second conductive member 140, where the first contact 110 is connected to the first conductive member 130, the second contact 120 is connected to the second conductive member 140 and abuts against the first contact 110, and the first conductive member 130, the first contact 110, the second contact 120 and the second conductive member 140 are combined to form a conductive path, and the first contact 110 can slide relative to the second contact 120 when the first conductive member 130 is far away from the second conductive member 140, so as to lengthen the conductive path. Compared with the prior art, the sliding contact device 100 provided by the invention has the advantages that the first contact 110 and the second contact 120 which are in sliding connection are adopted, so that the occurrence of electric arcs caused by open circuit can be prevented, potential safety hazards are avoided, the sliding contact device is safe and reliable, the occupied space is small, the practicability is strong, and the safety type circuit breaker 10 is strong in safety and wide in application range.
Second embodiment
Referring to fig. 7, the embodiment of the present invention provides a safety circuit breaker 10, which is different from the first embodiment in that the first contact 110 and the second contact 120 in the sliding contact apparatus 100 exchange positions, and the first conductive member 130 and the second conductive member 140 exchange positions.
In this embodiment, the second contact 120 is a moving contact, the second conductive member 140 is connected with the trip mechanism 700, and the second conductive member 140 can rotate under the driving of the trip mechanism 700, so as to drive the second contact 120 to approach or depart from the first contact 110, and the second contact 120 is connected with the second connection terminal 500 to be conducted with an electrical appliance. The first contact 110 is a fixed contact, the first contact 110 is connected with the trip switch 200 through the first conductive member 130, and the first contact 110 is connected with the first connection terminal 400 to be conducted with an external power source. The second contact 120 can be attached to or detached from the first contact 110 to enable connection or disconnection between an external power source and an electrical appliance.
The advantages of the sliding contact apparatus 100 provided in the embodiment of the present invention are the same as those of the first embodiment, and will not be described herein.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The sliding contact device is characterized by comprising a first contact, a second contact, a first conductive piece and a second conductive piece, wherein the first contact is connected with the first conductive piece, the second contact is connected with the second conductive piece and is propped against the first contact, the first conductive piece, the first contact, the second contact and the second conductive piece are combined to form a conductive path, and the first contact can slide relative to the second contact when the first conductive piece is far away from the second conductive piece so as to lengthen the conductive path;
the second conductive piece comprises a mounting part, a connecting part and a stopping part, wherein the mounting part is connected with the stopping part through the connecting part, the cross section area of the mounting part and the cross section area of the stopping part are both larger than the cross section area of the connecting part, and the second contact is in sliding connection with the connecting part and selectively propped against the stopping part;
the sliding contact device further comprises an elastic piece, wherein the elastic piece is sleeved outside the connecting part, one end of the elastic piece is propped against the mounting part, the other end of the elastic piece is propped against the second contact, and the elastic piece can apply elastic force to the second contact when the first contact slides relative to the second contact so as to enable the second contact to keep a joint state with the first contact;
the second contact comprises a propping part and a limiting part, a sliding groove is arranged in the propping part, the limiting part is connected with the propping part and is arranged at the opening of the sliding groove, the connecting part is in sliding connection with the limiting part, the stopping part stretches into the sliding groove and selectively props against the limiting part, and the propping part is in sliding connection with the first contact.
2. The sliding contact arrangement of claim 1, wherein the first contact is provided with a first end and a second end opposite each other, the first end being connected to the first conductive member and abutting the second contact, the second contact being capable of approaching the second end when the first conductive member is away from the second conductive member.
3. The sliding contact arrangement of claim 2, wherein the electrical resistance of the first contact increases gradually in a direction from the first end to the second end.
4. The sliding contact arrangement of claim 2, wherein the first contact is in the form of a strip and the first end is soldered to the first conductive member.
5. The sliding contact device according to claim 1, wherein the connecting portion is disposed in a middle portion of the stopper portion, the limiting portion is provided with a center hole, the center hole is communicated with the sliding groove, the connecting portion is slidably disposed in the center hole, and a cross-sectional area of the stopper portion is larger than an area of the center hole.
6. The sliding contact device according to claim 1, wherein the abutting portion is in a block shape, an abutting surface and a connecting surface are adjacently arranged on the abutting portion, the abutting surface abuts against the first contact, the connecting surface is arranged close to the first conductive member, and the abutting surface and the connecting surface are in arc transition.
7. A safety circuit breaker comprising a sliding contact arrangement according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633083.2A CN109461635B (en) | 2018-12-29 | 2018-12-29 | Sliding contact device and safety type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633083.2A CN109461635B (en) | 2018-12-29 | 2018-12-29 | Sliding contact device and safety type circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109461635A CN109461635A (en) | 2019-03-12 |
| CN109461635B true CN109461635B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811633083.2A Active CN109461635B (en) | 2018-12-29 | 2018-12-29 | Sliding contact device and safety type circuit breaker |
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| CN (1) | CN109461635B (en) |
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|---|---|---|---|---|
| CN1308387A (en) * | 2000-02-08 | 2001-08-15 | 约翰国际有限公司 | Interconnected contacts |
| CN1393900A (en) * | 2001-06-25 | 2003-01-29 | 阿尔斯托姆公司 | Apparatus with combined vacuum and gas interrupting high-voltage circuit beaker |
| CN1477662A (en) * | 2002-06-05 | 2004-02-25 | �����ɷ� | High voltage or medium voltage switch device composed of vacuum and gas circuit breaker |
| CN102100129A (en) * | 2008-07-17 | 2011-06-15 | 罗伯特·博世有限公司 | Electrical circuit arrangement |
| CN103137360A (en) * | 2011-11-30 | 2013-06-05 | 通用电气公司 | Electrical switch and circuit breaker |
-
2018
- 2018-12-29 CN CN201811633083.2A patent/CN109461635B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308387A (en) * | 2000-02-08 | 2001-08-15 | 约翰国际有限公司 | Interconnected contacts |
| CN1393900A (en) * | 2001-06-25 | 2003-01-29 | 阿尔斯托姆公司 | Apparatus with combined vacuum and gas interrupting high-voltage circuit beaker |
| CN1477662A (en) * | 2002-06-05 | 2004-02-25 | �����ɷ� | High voltage or medium voltage switch device composed of vacuum and gas circuit breaker |
| CN102100129A (en) * | 2008-07-17 | 2011-06-15 | 罗伯特·博世有限公司 | Electrical circuit arrangement |
| CN103137360A (en) * | 2011-11-30 | 2013-06-05 | 通用电气公司 | Electrical switch and circuit breaker |
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| Publication number | Publication date |
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| CN109461635A (en) | 2019-03-12 |
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