CN219800766U - Plastic case circuit breaker with air-blowing tripping device - Google Patents
Plastic case circuit breaker with air-blowing tripping device Download PDFInfo
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- CN219800766U CN219800766U CN202321091300.6U CN202321091300U CN219800766U CN 219800766 U CN219800766 U CN 219800766U CN 202321091300 U CN202321091300 U CN 202321091300U CN 219800766 U CN219800766 U CN 219800766U
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- air
- shell
- circuit breaker
- tripping
- case circuit
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- 238000007664 blowing Methods 0.000 title claims abstract description 27
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A molded case circuit breaker with an air-blow trip device. Mainly solves the problems that the prior air blowing device is provided with air cavities at two sides of a mounting plate to realize the action, and is connected on a baffle plate of a short-circuiting device through a tension spring to realize the mounting, and has complex structure and inconvenient structure. The method is characterized in that: the base is internally provided with an air-blowing tripping device, the air-blowing tripping device comprises a shell arranged between two breaking units, the shell is provided with a tripping rod in movable fit, two air cavities isolated from each other are arranged in the shell, the outer wall of the shell is provided with air holes which are arranged in a penetrating manner, the air cavities are communicated with the inner cavities of the breaking units through the air holes, and the tripping rod is used for forcing movement and pushing a tripping piece of an operating mechanism to realize tripping when at least one air cavity enters high-pressure gas. The utility model provides a plastic-case circuit breaker with an air-blowing tripping device, which is realized by a modularized air-blowing tripping device, wherein two chambers are arranged in a shell of the air-blowing tripping device and are communicated with two adjacent breaking units, so that the plastic-case circuit breaker is convenient to assemble and simple in structure.
Description
Technical Field
The utility model relates to the field of molded case circuit breakers, in particular to a molded case circuit breaker with an air-blowing tripping device.
Background
The air blowing mechanism is mainly used in a molded case circuit breaker with a closed contact arc extinguishing module, when a circuit generates breaking current, high-pressure gas can be generated in the closed arc extinguishing module to push the air blowing mechanism to act, so that the circuit breaker mechanism is tripped and disintegrated, the circuit is disconnected, and the breaking capacity of the circuit breaker can be improved.
As shown in chinese patent publication No. CN 112885668A, the current air-blowing device is to provide air cavities on both sides of the mounting plate to implement the action, and to connect the mounting plate to the separator of the short-circuiting device through a tension spring to implement the mounting, which is complicated in structure and inconvenient.
Disclosure of Invention
In order to overcome the defects of the background technology, the utility model provides a molded case circuit breaker with an air-blowing tripping device, which mainly solves the problems that the existing air-blowing device is provided with air cavities at two sides of a mounting plate to realize action, is connected to a separator of a short-circuiting device through a tension spring to realize mounting, has a complex structure and is inconvenient.
The technical scheme adopted by the utility model is as follows:
the utility model provides a moulded case circuit breaker with air-blowing trip gear, includes the base, be equipped with operating device and two at least breaking unit in the base, operating device is connected with arbitrary breaking unit, still be equipped with air-blowing trip gear in the base, air-blowing trip gear is including locating two casing between the breaking unit, the casing is equipped with clearance fit's tripping device, be equipped with two air cavities that keep apart each other in the casing, be equipped with the gas pocket that runs through the setting on the casing outer wall, the air cavity passes through the inner chamber intercommunication of gas pocket and breaking unit, the tripping device is used for at least one the atress activity and promotion operating device's tripping part realizes the tripping when the air pocket gets into high-pressure gas.
The casing is internally provided with a rotating shaft, and the tripping rod is provided with a shaft hole matched with the rotating shaft.
An elastic piece is arranged in the shell and provides resetting force for the tripping rod.
The novel tripping device is characterized in that a first locating pin is arranged in the shell, a second locating pin is arranged on the tripping rod, the elastic piece is a pressure spring, one end of the pressure spring is sleeved on the first locating pin, and the other end of the pressure spring is sleeved on the second locating pin.
The air cavity comprises a first air cavity, a first partition plate is arranged in the shell, the tripping rod comprises a mounting disc, the shaft hole is formed in the mounting disc, a first rod is arranged at one end of the mounting disc, and the first air cavity is formed on the left side of the first rod, the lower side of the first partition plate, the circumferential outer side of the mounting disc and the inner side of the inner wall of the shell.
The contact surface of the first partition plate and the mounting plate is an arc-shaped surface.
The air cavity comprises a second air cavity, a second partition plate is arranged in the shell, the tripping rod comprises a mounting disc, the shaft hole is formed in the mounting disc, one end of the mounting disc is provided with a second rod, and the second air cavity is formed on the right side of the second rod, the upper side of the second partition plate, the circumferential outer side of the mounting disc and the inner side of the inner wall of the shell.
The trip bar is characterized in that an opening groove used for extending out of the trip bar is formed in the shell, a convex edge is arranged on the trip bar and arranged in the opening groove, and the outer end face of the convex edge is an arc-shaped face.
The breaking unit comprises a shell, an arc extinguish chamber is arranged in the shell, a gas outlet which is arranged in a penetrating mode is arranged on the shell, the gas outlet is arranged opposite to the arc extinguish chamber, and the gas outlet is communicated with the gas hole.
The shell is provided with a sinking groove communicated with the air outlet, the outer wall of the shell is provided with a connecting pipe with a part in plug-in fit with the sinking groove, and the air hole is formed in the connecting pipe.
The beneficial effects of the utility model are as follows: the utility model provides a plastic-case circuit breaker with an air-blowing tripping device, which is realized by a modularized air-blowing tripping device, wherein two chambers are arranged in a shell of the air-blowing tripping device and are communicated with two adjacent breaking units, so that the plastic-case circuit breaker is convenient to assemble and simple in structure.
Drawings
Fig. 1 is an internal perspective view of an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a partial explosion of an embodiment of the present utility model.
Fig. 3 is a schematic view of an air blast trip device according to an embodiment of the present utility model.
Fig. 4 is a schematic diagram of a partial explosion according to an embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings: as shown in the figure, the molded case circuit breaker with the air-blowing tripping device comprises a base 1, an operating mechanism 2 and at least two breaking units 3 are arranged in the base, the operating mechanism is connected with any breaking unit, the air-blowing tripping device is further arranged in the base, the air-blowing tripping device comprises a shell 4 arranged between the breaking units, the shell is provided with a movable tripping rod 5, two air cavities 6 which are isolated from each other are arranged in the shell, an air hole 421 penetrating the air cavity is arranged on the outer wall of the shell, the air cavity is communicated with the inner cavity of the breaking unit through the air hole, and the tripping rod is used for at least one tripping piece 21 which is stressed and pushes the operating mechanism to realize tripping when the air cavity enters high-pressure gas. Be equipped with explosion chamber, moving contact and static contact etc. in the breaking device for prior art, operating device includes handle, connecting rod, trip piece can be for detaining again or hasp etc. for prior art, no longer be described, the air-blowing trip gear is installed between two breaking devices, can directly put in the base can, also can set up the heavy groove that is used for its to place in the base, can drive the trip bar activity after the interior high-pressure gas of breaking the unit enters into in the casing, make the trip bar drive trip piece and trip, two air chambers are all established in the casing, the trip bar also need not be connected with the part in the base alone moreover, the dismouting of being convenient for.
In this embodiment, as shown in the figure, a rotating shaft 41 is disposed in the housing, and a shaft hole matched with the rotating shaft is disposed on the trip bar. The tripping rod part is arranged in the shell and hinged, and the part extends out of the shell to push the tripping member. Simple structure and convenient use.
In this embodiment, as shown in the figure, an elastic member 43 is disposed in the housing, and the elastic member provides a restoring force for the trip bar. The elastic piece can be a spring, an elastic piece and the like, when gas enters, the tripping rod can overcome the force of the elastic piece to realize tripping, the elastic piece plays a role in enabling the tripping rod to rotate to an initial position, and in addition, the pneumatic pressure required by the action can be controlled by adjusting the force of the elastic piece.
In this embodiment, as shown in the figure, a first positioning pin is disposed in the housing, a second positioning pin is disposed on the trip bar, the elastic element is a compression spring, one end of the compression spring is sleeved on the first positioning pin, and the other end of the compression spring is sleeved on the second positioning pin. The installation is more stable and can not deviate from.
In this embodiment, as shown in the drawing, the air cavity includes a first air cavity 61, a first partition 44 is disposed in the housing, the trip lever includes a mounting plate 52, the shaft hole is disposed on the mounting plate, one end of the mounting plate is provided with a first lever 53, and the left side of the first lever, the lower side of the first partition, the circumferential outer side of the mounting plate, and the inner side of the inner wall of the housing form the first air cavity 61. The inner wall of the shell can be a circumferential inner wall and a front inner wall and a rear inner wall, in addition, the shell can be assembled by two sub-shells which are detachably connected, the assembly can be realized by means of screw connection or clamping connection and the like, and a gap for rotation exists between the bottom of the first rod and the inner wall of the shell, so that the first air cavity is not completely airtight.
In this embodiment, as shown in the drawing, the contact surface between the first partition plate and the mounting plate is an arc surface. The mounting plate is convenient to rotate.
In this embodiment, as shown in the drawing, the air cavity includes a second air cavity 62, a second partition 45 is disposed in the housing, the trip lever includes a mounting disc 52, the shaft hole is disposed on the mounting disc, one end of the mounting disc is provided with a second lever 54, and the second air cavity 62 is formed on the right side of the second lever, on the upper side of the second partition, on the circumferential outer side of the mounting disc, and on the inner side of the inner wall of the housing. The inner wall of the housing may form a blocking wall 49 which functions as a wall forming the second air chamber.
In this embodiment, as shown in the figure, the casing is provided with an opening groove 46 for extending the trip bar, the trip bar is provided with a rib 55, the rib is disposed in the opening groove, and an external end surface of the rib is an arc surface. The rib is adopted to realize displacement limitation in the thickness direction, and the rib with the arc surface is adopted to reduce friction if the rib is touched occasionally during rotation.
In this embodiment, as shown in the drawing, the breaking unit includes a housing 60, an arc extinguishing chamber is disposed in the housing, and an air outlet 602 that is disposed through the housing and is disposed opposite to the arc extinguishing chamber, and the air outlet is communicated with the air hole. The arc extinguishing chamber is a place where high-pressure gas gathers, so that the gas can be better led in, and further, the arc extinguishing chamber can be arranged opposite to an arc extinguishing grid plate of the arc extinguishing chamber.
In this embodiment, as shown in the drawing, the casing is provided with a sink 63 that communicates with the air outlet, the outer wall of the casing is provided with a connecting pipe 48 that is partially in plug-in fit with the sink, and the air hole is disposed in the connecting pipe. The connecting pipe plays a better role in guiding gas on one hand and can also play a role in installing the shell on the other hand.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.
Claims (10)
1. The utility model provides a moulded case circuit breaker with air-blowing trip gear, includes base (1), be equipped with operating device (2) and two at least breaking unit (3) in the base, operating device is connected its characterized in that with arbitrary breaking unit: still be equipped with the air-blowing trip gear in the base, the air-blowing trip gear is including locating two casing (4) between the breaking unit, the casing is equipped with movable fit's release lever (5), be equipped with two air cavities (6) that keep apart each other in the casing, be equipped with on the casing outer wall and run through the gas pocket (421) that set up, the air cavity passes through the inner chamber intercommunication of gas pocket and breaking unit, the release lever is used for at least one the atress activity and promotion operating device's release (21) realize the release when the air cavity gets into high-pressure gas.
2. The molded case circuit breaker with air-blow trip unit according to claim 1, wherein: the casing is internally provided with a rotating shaft (41), and the tripping rod is provided with a shaft hole matched with the rotating shaft.
3. The molded case circuit breaker with air-blow trip unit according to claim 1, wherein: an elastic piece (43) is arranged in the shell and provides resetting force for the tripping rod.
4. The molded case circuit breaker with air-blow trip unit according to claim 3, wherein: the novel tripping device is characterized in that a first locating pin is arranged in the shell, a second locating pin is arranged on the tripping rod, the elastic piece is a pressure spring, one end of the pressure spring is sleeved on the first locating pin, and the other end of the pressure spring is sleeved on the second locating pin.
5. The molded case circuit breaker with air-blow trip unit according to claim 2, wherein: the air cavity comprises a first air cavity (61), a first partition plate (44) is arranged in the shell, the tripping rod comprises a mounting disc (52), the shaft hole is formed in the mounting disc, a first rod (53) is arranged at one end of the mounting disc, and the first air cavity (61) is formed on the left side of the first rod, the lower side of the first partition plate, the circumferential outer side of the mounting disc and the inner side of the inner wall of the shell.
6. The molded case circuit breaker with air-blow trip unit according to claim 5, wherein: the contact surface of the first partition plate and the mounting plate is an arc-shaped surface.
7. The molded case circuit breaker with air-blow trip unit according to claim 2, wherein: the air cavity comprises a second air cavity (62), a second partition plate (45) is arranged in the shell, the tripping rod comprises a mounting disc (52), the shaft hole is formed in the mounting disc, a second rod (54) is arranged at one end of the mounting disc, and the second air cavity (62) is formed on the right side of the second rod, on the upper side of the second partition plate, on the outer side of the periphery of the mounting disc and on the inner side of the inner wall of the shell.
8. The molded case circuit breaker with air-blow trip unit according to claim 1, wherein: the casing is provided with an opening groove (46) for the release rod to extend out, the release rod is provided with a convex rib (55), the convex rib is arranged in the opening groove, and the outer end surface of the convex rib is an arc surface.
9. The molded case circuit breaker with air-blow trip unit according to claim 1, wherein: the breaking unit comprises a shell (60), wherein an arc extinguish chamber is arranged in the shell, a gas outlet (602) which is arranged in a penetrating mode is arranged on the shell, the gas outlet is arranged opposite to the arc extinguish chamber, and the gas outlet is communicated with the gas hole.
10. The molded case circuit breaker with air-blow trip unit according to claim 9, wherein: the shell is provided with a sinking groove (63) communicated with the air outlet, the outer wall of the shell is provided with a connecting pipe (48) with a part of the connecting pipe being in plug-in fit with the sinking groove, and the air hole is formed in the connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321091300.6U CN219800766U (en) | 2023-05-06 | 2023-05-06 | Plastic case circuit breaker with air-blowing tripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321091300.6U CN219800766U (en) | 2023-05-06 | 2023-05-06 | Plastic case circuit breaker with air-blowing tripping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219800766U true CN219800766U (en) | 2023-10-03 |
Family
ID=88156020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321091300.6U Active CN219800766U (en) | 2023-05-06 | 2023-05-06 | Plastic case circuit breaker with air-blowing tripping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219800766U (en) |
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2023
- 2023-05-06 CN CN202321091300.6U patent/CN219800766U/en active Active
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