CN114446725B - Plug-in circuit breaker and power distribution cabinet - Google Patents
Plug-in circuit breaker and power distribution cabinet Download PDFInfo
- Publication number
- CN114446725B CN114446725B CN202011214687.0A CN202011214687A CN114446725B CN 114446725 B CN114446725 B CN 114446725B CN 202011214687 A CN202011214687 A CN 202011214687A CN 114446725 B CN114446725 B CN 114446725B
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- Prior art keywords
- circuit breaker
- breaker body
- pressing block
- plug
- push rod
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- 230000000670 limiting effect Effects 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Distribution Board (AREA)
Abstract
The invention relates to the field of power distribution cabinets, in particular to a plug-in circuit breaker and a power distribution cabinet. The plug-in circuit breaker comprises a circuit breaker body, a push rod, an elastic piece and a mechanism traction rod; the circuit breaker body is provided with a transverse limiting part which is in sliding fit with the push rod and used for preventing the push rod from moving along the direction parallel to the sliding surface of the circuit breaker body; the two ends of the elastic piece are respectively connected with the push rod and the breaker body, the push rod is provided with a pressing block and a blocking block which are fixedly connected with each other, and the pressing block can be pushed into a position avoiding hole on the mounting plate of the cabinet body by the elastic piece to be matched when the breaker body is in place; the gear block is used for preventing the mechanism traction rod from switching to a closing state when the pressing block is retracted into the breaker body. The power distribution cabinet comprises the plug-in circuit breaker. The plug-in circuit breaker and the power distribution cabinet provided by the invention can avoid the problem of live plug-in and have higher safety.
Description
Technical Field
The invention relates to the field of power distribution cabinets, in particular to a plug-in circuit breaker and a power distribution cabinet.
Background
The circuit breaker is a switching element commonly used in a power distribution cabinet and can switch on, load and break off current under normal or abnormal loop conditions.
The plug-in circuit breaker is a circuit breaker which is installed in or taken out from a power distribution cabinet in a plug-in mode, and when the plug-in circuit breaker is installed, a sliding surface of the plug-in circuit breaker is inserted into a target installation position against a cabinet body installation plate; when the plug-in circuit breaker is disassembled, the plug-in circuit breaker is pulled out along the cabinet body mounting plate. However, the existing plug-in circuit breaker cannot avoid the problem of hot plug, and has poor safety.
In summary, how to overcome the above-mentioned drawbacks of the conventional plug-in circuit breaker is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a plug-in circuit breaker and a power distribution cabinet, so as to solve the technical problem that the plug-in circuit breaker in the prior art cannot avoid live plug-in.
The invention provides a plug-in circuit breaker which comprises a circuit breaker body, a push rod, an elastic piece and a mechanism traction rod.
The circuit breaker body is provided with a transverse limiting part, and the transverse limiting part is in sliding fit with the push rod and is used for preventing the push rod from moving along a direction parallel to the sliding surface of the circuit breaker body.
The two ends of the elastic piece are respectively connected with the push rod and the breaker body, the push rod is provided with a pressing block and a gear block which are fixedly connected with each other, and the pressing block can be pushed into a gear hole on the mounting plate of the cabinet body by the elastic piece to be matched when the breaker body is mounted in place; the gear block is used for preventing the mechanism traction rod from switching to a closing state when the pressing block is retracted into the breaker body.
Preferably, as an implementation manner, a surface of the pressing block facing the direction in which the breaker body is pulled out is a first vertical surface, the first vertical surface is perpendicular to the direction in which the breaker body is pulled out, and the first vertical surface can be abutted against the edge of the avoidance hole when the breaker body is installed in place.
Preferably, as an implementation manner, the surface of the pressing block facing the direction in which the breaker body is pulled out includes a second vertical surface and a first inclined surface, the first inclined surface is located at the outer side of the second vertical surface, the second vertical surface is perpendicular to the direction in which the breaker body is pulled out, the first inclined surface is inclined from outside to inside in the direction in which the breaker body is pulled out, and the second vertical surface can be abutted against the edge of the avoidance hole when the breaker body is installed in place.
Preferably, as an embodiment, a surface of the pressing block facing the direction in which the breaker body is pulled out is a second inclined surface inclined from the outside to the inside in the direction in which the breaker body is pulled out.
Preferably, as an embodiment, a surface of the pressing block facing the direction in which the breaker body is inserted is a third inclined surface inclined from the outside to the inside in the direction in which the breaker body is inserted.
Preferably, as an embodiment, the circuit breaker body has a longitudinal limit portion, and the push rod has a protrusion for blocking the protrusion when the pressing block is pushed out to a predetermined position.
Preferably, as an implementation manner, the push rod is provided with a bar-shaped rod, the length direction of the bar-shaped rod is perpendicular to the sliding surface of the breaker body, two ends of the bar-shaped rod are respectively and fixedly connected with the protrusion and the pressing block, a sliding hole is formed in the longitudinal limiting portion, and the bar-shaped rod is in sliding fit with the sliding hole.
The elastic piece is a spring, the spring is sleeved outside the bar-shaped rod, and two ends of the spring are respectively abutted to the longitudinal limiting part and the pressing block.
Preferably, as an implementation manner, the protrusion is conical, and a conical top of the protrusion faces to a side away from the bar; the bulge and the bar rod are provided with deformation holes which are communicated with each other, and the bulge can deform and pass through the sliding hole.
Preferably, as an implementation manner, the transverse limiting portion and the longitudinal limiting portion are both located on the casing of the circuit breaker body.
Correspondingly, the invention further provides a power distribution cabinet which comprises the plug-in circuit breaker.
The plug-in circuit breaker and the power distribution cabinet provided by the invention have the beneficial effects that:
The invention provides an insertion type circuit breaker which mainly comprises a circuit breaker body, a push rod, an elastic piece and a mechanism traction rod, wherein the circuit breaker body is provided with a transverse limiting part which can be in sliding fit with the push rod so as to prevent the push rod from moving along a direction parallel to a sliding surface of the circuit breaker body by using the transverse limiting part and realize transverse limiting of the push rod; the two ends of the elastic piece are respectively connected with the push rod and the breaker body, and the push rod is provided with a pressing block and a blocking block which are mutually connected.
In the process of inserting the circuit breaker body into the cabinet body, the sliding surface of the circuit breaker body can slide towards the interior of the cabinet body along with the cabinet body mounting plate, the pressing block on the push rod can be retracted into the circuit breaker body under the action of the pressing of the cabinet body mounting plate, and in the process, the gear block on the push rod is positioned at a position capable of preventing the mechanism traction rod from switching to a closing state, so that the circuit breaker cannot be closed or can be forced to be opened; when the circuit breaker body moves to the target mounting position, the pressing block is just opposite to the avoidance hole on the cabinet body mounting plate, so that the pressing block can lose the pressing of the cabinet body mounting plate, meanwhile, the elastic force of the elastic piece can be released, under the limiting effect of the transverse limiting part, the pressing block can be pushed out of the circuit breaker body by the elastic piece, so that the pressing block enters the avoidance hole on the cabinet body mounting plate, at the moment, the gear block on the push rod can move synchronously along with the push rod, the traction rod of the mechanism is not prevented from switching to a closing state any more, and the plug-in circuit breaker can be closed freely.
In the same way, in the process of pulling out the breaker body from the cabinet body, the pressing block on the push rod can be moved away from the position avoiding hole on the cabinet body mounting plate and is retracted into the breaker body against the elastic force of the elastic piece, so that the sliding surface of the breaker body can slide towards the outside of the cabinet body along the cabinet body mounting plate, and in the process, the position blocking block on the push rod is positioned at a position capable of preventing the mechanism traction rod from switching to a closing state, and the breaker cannot be closed or can be forced to be opened; after the circuit breaker body is separated from the cabinet body, the pressing block on the push rod can slide out from the outer end edge of the cabinet body mounting plate, so that the pressing block can lose the pressing of the cabinet body mounting plate, meanwhile, the elastic force of the elastic piece can be released, and under the limiting effect of the transverse limiting part, the pressing block can be pushed out from the circuit breaker body by the elastic piece to reset.
Therefore, the plug-in circuit breaker provided by the invention can avoid the problem of live plug-in and has higher safety.
The power distribution cabinet provided by the invention is provided with the plug-in circuit breaker.
Therefore, the power distribution cabinet provided by the invention can avoid the problem of live plug-in and plug-out of the plug-in circuit breaker, and has higher safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an assembled state of a plug-in circuit breaker and a cabinet mounting board according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of another assembled state of the plug-in circuit breaker and the cabinet mounting board according to the embodiment of the invention;
fig. 3 is a cross-sectional view of an assembly structure of the plug-in circuit breaker and a cabinet mounting board according to the embodiment of the present invention shown in fig. 2;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is a schematic diagram of still another assembled state of the plug-in circuit breaker and the cabinet mounting board according to the embodiment of the invention;
fig. 6 is a cross-sectional view of an assembly structure of the plug-in circuit breaker and the cabinet mounting board provided in the embodiment of the invention in fig. 5;
FIG. 7 is an enlarged view of portion B of FIG. 6;
Fig. 8 is a schematic view of a first structure of a push rod in a plug-in circuit breaker according to an embodiment of the present invention;
fig. 9 is a schematic view of a second structure of a push rod in a plug-in circuit breaker according to an embodiment of the present invention;
fig. 10 is a schematic view of a third structure of a push rod in a plug-in circuit breaker according to an embodiment of the present invention.
Icon:
100-a breaker body; 110-a transverse limit part; 120-a longitudinal limit part;
200-pushing rod; 210-pressing blocks; 211-a first vertical plane; 212-a second vertical plane; 213-a first ramp; 214-a second ramp; 215-a third ramp; 220-gear block; 230-bump; 240-bar; 250-deformation holes;
300-springs;
400-mechanism traction rod;
500-a cabinet mounting plate; 510-a clearance hole.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" 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.
The invention will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
Referring to fig. 1 to 7, the present embodiment provides a plug-in circuit breaker, which is mainly composed of a circuit breaker body 100, a push rod 200, an elastic member and a mechanism traction rod 400, wherein the circuit breaker body 100 has a lateral limit portion 110, and the lateral limit portion 110 can be slidably engaged with the push rod 200 to prevent the push rod 200 from moving in a direction parallel to a sliding surface of the circuit breaker body 100 by using the lateral limit portion 110, so as to implement lateral limit of the push rod 200; both ends of the elastic member are respectively connected with the push rod 200 and the breaker body 100, and the push rod 200 has a pressing block 210 and a blocking block 220 fixedly connected with each other.
During the process of inserting the circuit breaker body 100 into the cabinet, the sliding surface of the circuit breaker body 100 slides towards the interior of the cabinet along with the cabinet mounting plate 500 (see fig. 1), the pressing block 210 on the push rod 200 is retracted into the interior of the circuit breaker body 100 under the pressing action of the cabinet mounting plate 500 (see fig. 2-4), and during the process, the gear block 220 on the push rod 200 is positioned at a position capable of preventing the mechanism traction rod 400 from switching to the closing state, so that the circuit breaker cannot be closed or can be forced to be opened; when the breaker body 100 moves to the target installation position, the pressing block 210 is opposite to the avoidance hole 510 on the cabinet installation plate 500, so that the pressing block 210 can lose the pressing of the cabinet installation plate 500, meanwhile, the elastic force of the elastic piece can be released, under the limiting action of the transverse limiting part 110, the pressing block 210 can be pushed out from the breaker body 100 by the elastic piece, so that the pressing block enters the avoidance hole 510 on the cabinet installation plate 500 (see fig. 5-7), at this time, the gear block on the push rod 200 can move synchronously along with the push rod 200, the mechanism traction rod 400 is not prevented from being switched to a closing state any more, and the plug-in breaker can be closed freely.
Also, in the process of pulling out the breaker body 100 from the cabinet, the pressing block 210 on the push rod 200 is moved away from the avoidance hole 510 on the cabinet mounting plate 500 and is retracted into the breaker body 100 against the elastic force of the elastic member, so that the sliding surface of the breaker body 100 can slide towards the outside of the cabinet body against the cabinet mounting plate 500 (see fig. 2-4), and in this process, the gear block 220 on the push rod 200 is located at a position capable of preventing the switching of the mechanism traction rod 400 to the switching-on state, so that the breaker cannot be switched on or can be forced to be switched off; when the breaker body 100 is separated from the cabinet, the pressing block 210 on the push rod 200 slides out from the edge of the outer end of the cabinet mounting plate 500, so that the pressing block 210 loses the pressing of the cabinet mounting plate 500, and at the same time, the elastic force of the elastic member is released, and under the limiting action of the transverse limiting portion 110, the pressing block 210 can be pushed out from the breaker body 100 by the elastic member to reset (see fig. 1).
Therefore, the plug-in circuit breaker provided by the embodiment can avoid the problem of live plug-in, and has higher safety.
On the basis of the above-described structure, the surface of the pressing block 210 facing the direction in which the breaker body 100 is pulled out may be provided as any one of the following three specific structures.
First, referring to fig. 8, a surface of the pressing block 210 facing the direction in which the breaker body 100 is pulled out may be set as a first vertical surface 211, the first vertical surface 211 is perpendicular to the direction in which the breaker body 100 is pulled out, when the breaker body 100 is installed in place, the first vertical surface 211 of the pressing block 210 may abut against an edge of the avoidance hole 510, thereby the edge of the avoidance hole 510 may form a barrier to the pressing block 210, the pressing block 210 may not easily move to the outside of the cabinet body, and further, the breaker body 100 provided with the lateral limiting portion 110 may not easily move to the outside of the cabinet body, so that contact good performance of the back of the breaker may be improved, a heating problem may not easily occur due to a contact failure, and safety is high.
In this embodiment, if the breaker body 100 needs to be pulled out, the pressing block 210 can be pushed into the breaker body 100 by an external tool (such as a finger) to counteract the elastic force of the elastic member until the pressing block 210 is completely retracted into the breaker body 100, at this time, the edge of the avoidance hole 510 no longer forms a barrier against the first vertical surface 211 of the pressing block 210, and the breaker body 100 can be pulled out smoothly until the breaker body 100 is pulled out.
Second, referring to fig. 9, the surface of the pressing block 210 in the direction toward the withdrawal of the breaker body 100 may be provided as two parts, a second hanging surface 212 and a first inclined surface 213, respectively, wherein the second inclined surface 214 is located at the outer side of the second hanging surface 212 (that is, the first inclined surface 213 is located at the end portion), the second hanging surface 212 is perpendicular to the withdrawal direction of the breaker body 100, and the first inclined surface 213 is inclined from the outside to the inside toward the withdrawal direction of the breaker body 100. When the circuit breaker body 100 is installed in place, the first vertical surface 211 of the pressing block 210 can be abutted against the edge of the avoidance hole 510, so that the edge of the avoidance hole 510 can block the pressing block 210, the pressing block 210 cannot easily move towards the outer part of the cabinet, and further, the circuit breaker body 100 provided with the transverse limiting part 110 cannot easily move towards the outer part of the cabinet, so that the contact well of the back of the circuit breaker can be improved, the heating problem is not easily caused by poor contact, and the safety is high.
In this embodiment, if the breaker body 100 needs to be pulled out, the pressing block 210 can be pushed into the breaker body 100 by an external tool (such as a finger) to counteract the elastic force of the elastic member, after the second vertical surface 212 of the pressing block 210 is separated from the avoidance hole 510, the first inclined surface 213 of the pressing block 210 will contact with the edge of the avoidance hole 510, at this time, the breaker body 100 can be pulled out directly, and the first inclined surface 213 of the pressing block 210 will slide along the edge of the avoidance hole 510 until the pressing block 210 is completely retracted into the breaker body 100, at this time, the breaker body 100 can be pulled out smoothly until the breaker body 100 is pulled out, so that the force consumed for pressing the push rod 200 can be reduced.
Third, referring to fig. 10, the surface of the pressing block 210 facing the direction in which the breaker body 100 is pulled out may be set as the second inclined surface 214, and the second inclined surface 214 is inclined from the outside to the inside in the direction in which the breaker body 100 is pulled out, so that the breaker body 100 may be pulled out directly, the second inclined surface 214 of the pressing block 210 may slide along the edge of the avoidance hole 510 until the pressing block 210 is completely retracted into the breaker body 100, at this time, the breaker body 100 may be pulled out smoothly until the breaker body 100 is pulled out, that is, during the whole pulling process, no tool is required to push the pressing block 210, and the process of pulling out the breaker body 100 may be more convenient.
In addition, referring to fig. 8 to 10, the surface of the pressing block 210 facing the direction in which the breaker body 100 is inserted may be set as a third inclined surface 215, and the third inclined surface 215 is inclined from the outside to the inside in the direction in which the breaker body 100 is inserted, so that the breaker body 100 may be directly pushed inward along the cabinet mounting plate 500, and after the third inclined surface 215 of the pressing block 210 abuts against the outer end edge of the cabinet mounting plate 500, the pressing block may slide along the outer end edge of the cabinet mounting plate 500 until the pressing block 210 is completely retracted into the breaker body 100, at this time, the breaker body 100 may be pushed inward smoothly until the breaker body 100 is inserted in place, that is, during the entire insertion process, the pressing block 210 may be pushed without tools, so that the process of inserting the breaker body 100 may be more convenient.
Referring to fig. 4 and 7, a longitudinal limit part 120 may be further provided in a specific structure of the circuit breaker body 100, and at the same time, a protrusion 230 is provided on the push rod 200, and when the pressing block 210 on the push rod 200 is pushed out to a predetermined position, the longitudinal limit part 120 can block the protrusion 230 on the push rod 200, so that the push rod 200 cannot continue to move in the original direction, and the push rod 200 cannot be separated from the circuit breaker body 100.
On the basis of the above structure, a bar 240 may be provided in a specific structure of the push rod 200, the length direction of the bar 240 may be set to be perpendicular to the sliding surface of the breaker body 100, and both ends of the bar 240 may be fixedly connected with the protrusion 230 and the pressing block 210, respectively; meanwhile, a sliding hole is formed in the longitudinal limiting portion 120, the bar 240 is slidably engaged with the sliding hole, and the bar 240 is laterally limited by the sliding hole. The spring 300 is used as the elastic piece, the spring 300 is sleeved outside the bar-shaped rod 240, and two ends of the spring 300 are respectively abutted against the longitudinal limiting part 120 and the pressing block 210 of the push rod 200, so that the push rod 200 is stressed more uniformly and is not easy to skew, the force consumed for pushing the push rod 200 can be saved, the abrasion can be reduced, in addition, the elastic rod can guide the spring 300, the spring 300 is not easy to bend, and the service life of the spring 300 is prolonged.
Preferably, referring to fig. 4 and 7-10, the protrusion 230 may be configured as a tapered structure, and the cone top of the protrusion 230 is configured to face to a side facing away from the bar 240, and simultaneously, deformation holes 250 are formed on the protrusion 230 and the bar 240, which are in communication with each other, in the process of mounting the push rod 200 to the circuit breaker body 100, the cone top of the protrusion 230 of the push rod 200 may be directly opposite to the sliding hole on the longitudinal limiting portion 120, and then the push rod 200 is pushed into the sliding hole, in this process, the protrusion 230 is pressed into the deformation holes 250 to deform, and the size becomes small, so that the protrusion 230 can smoothly pass through the sliding hole on the longitudinal limiting portion 120, and the protrusion 230 can recover to the original state after completely passing through the sliding hole, so that the push rod 200 cannot reversely slide out due to the elastic force of the elastic member.
Specifically, the push rod 200 may be made of plastic having a certain toughness.
The lateral limit part 110 and the longitudinal limit part 120 described above may be provided on the case of the circuit breaker body 100.
The embodiment also provides a power distribution cabinet, which comprises the plug-in circuit breaker.
Therefore, the power distribution cabinet provided by the embodiment can avoid the problem of hot plug of the plug-in circuit breaker, and is high in safety.
In summary, the invention discloses a plug-in circuit breaker and a power distribution cabinet, which overcome a plurality of technical defects of the traditional plug-in circuit breaker. The plug-in circuit breaker and the power distribution cabinet provided by the embodiment can avoid the problem of live plug-in, and are high in safety.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A plug-in circuit breaker, characterized by comprising a circuit breaker body (100), a push rod (200), an elastic piece and a mechanism traction rod (400);
the circuit breaker body (100) is provided with a transverse limiting part (110), and the transverse limiting part (110) is in sliding fit with the push rod (200) and is used for preventing the push rod (200) from moving along a direction parallel to a sliding surface of the circuit breaker body (100);
The two ends of the elastic piece are respectively connected with the push rod (200) and the breaker body (100), the push rod (200) is provided with a pressing block (210) and a gear block (220) which are fixedly connected with each other, and the pressing block (210) can be pushed into a gear hole (510) on the cabinet body mounting plate (500) by the elastic piece to be matched when the breaker body (100) is mounted in place; the gear block (220) is used for preventing the mechanism traction rod (400) from switching to a closing state when the pressing block (210) is retracted into the breaker body (100); the surface of the pressing block (210) facing the direction of the insertion of the breaker body (100) is a third inclined surface (215), and the third inclined surface (215) is inclined from outside to inside towards the direction of the insertion of the breaker body (100); the circuit breaker body (100) has a longitudinal limit portion (120), the push rod (200) has a protrusion (230), the longitudinal limit portion (120) is used for blocking the protrusion (230) when the pressing block (210) is pushed out to a predetermined position; the push rod (200) is provided with a bar-shaped rod (240), the length direction of the bar-shaped rod (240) is perpendicular to the sliding surface of the breaker body (100), two ends of the bar-shaped rod (240) are fixedly connected with the bulge (230) and the pressing block (210) respectively, a sliding hole is formed in the longitudinal limiting part (120), and the bar-shaped rod (240) is in sliding fit with the sliding hole; the elastic piece is a spring (300), the spring (300) is sleeved outside the bar-shaped rod (240), and two ends of the spring (300) are respectively abutted to the longitudinal limiting part (120) and the pressing block (210).
2. The plug-in circuit breaker according to claim 1, characterized in that the face of the pressing block (210) facing the direction of the withdrawal of the circuit breaker body (100) is a first vertical face (211), the first vertical face (211) being perpendicular to the direction of the withdrawal of the circuit breaker body (100), the first vertical face (211) being able to abut against the edge of the clearance hole (510) when the circuit breaker body (100) is mounted in place.
3. The plug-in circuit breaker according to claim 1, characterized in that the face of the pressing block (210) facing the direction in which the circuit breaker body (100) is pulled out comprises a second vertical face (212) and a first inclined face (213), the first inclined face (213) being located outside the second vertical face (212), the second vertical face (212) being perpendicular to the direction in which the circuit breaker body (100) is pulled out, the first inclined face (213) being inclined from the outside inwards in the direction in which the circuit breaker body (100) is pulled out, the second vertical face (212) being able to abut against the edge of the avoidance hole (510) when the circuit breaker body (100) is mounted in place.
4. The plug-in circuit breaker according to claim 1, characterized in that the surface of the pressing block (210) facing the direction in which the circuit breaker body (100) is pulled out is a second inclined surface (214), the second inclined surface (214) being inclined from the outside to the inside in the direction in which the circuit breaker body (100) is pulled out.
5. The plug-in circuit breaker according to claim 1, characterized in that the projection (230) is conical and the conical tip of the projection (230) faces the side facing away from the bar (240); the bulge (230) and the bar-shaped rod (240) are provided with deformation holes (250) which are communicated with each other, and the bulge (230) can deform and pass through the sliding holes.
6. The plug-in circuit breaker according to claim 1, characterized in that the lateral limit (110) and the longitudinal limit (120) are both located on the housing of the circuit breaker body (100).
7. A power distribution cabinet comprising a plug-in circuit breaker according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214687.0A CN114446725B (en) | 2020-11-03 | 2020-11-03 | Plug-in circuit breaker and power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011214687.0A CN114446725B (en) | 2020-11-03 | 2020-11-03 | Plug-in circuit breaker and power distribution cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114446725A CN114446725A (en) | 2022-05-06 |
| CN114446725B true CN114446725B (en) | 2024-08-13 |
Family
ID=81361996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011214687.0A Active CN114446725B (en) | 2020-11-03 | 2020-11-03 | Plug-in circuit breaker and power distribution cabinet |
Country Status (1)
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| CN213242450U (en) * | 2020-11-03 | 2021-05-18 | 上海良信电器股份有限公司 | Plug-in circuit breaker and power distribution cabinet |
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| KR100430223B1 (en) * | 2002-02-22 | 2004-05-03 | 엘지산전 주식회사 | Withdrawal type circuit breaker |
| CN101853750B (en) * | 2009-03-31 | 2014-01-01 | 上海良信电器股份有限公司 | Miniature circuit breaker for side face plug-in installation |
| CN108010817B (en) * | 2016-11-02 | 2020-02-21 | 上海良信电器股份有限公司 | Self-locking device for safe plugging of plug-in circuit breaker |
| CN110660623A (en) * | 2018-06-29 | 2020-01-07 | 宁波江北思洞工业设计有限公司 | Electronic molded case circuit breaker |
| CN111477511A (en) * | 2019-11-15 | 2020-07-31 | 浙江正泰电器股份有限公司 | Plug-in circuit breaker |
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| CN213242450U (en) * | 2020-11-03 | 2021-05-18 | 上海良信电器股份有限公司 | Plug-in circuit breaker and power distribution cabinet |
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