CN220306184U - Circuit breaker with reduced height - Google Patents
Circuit breaker with reduced height Download PDFInfo
- Publication number
- CN220306184U CN220306184U CN202321791237.7U CN202321791237U CN220306184U CN 220306184 U CN220306184 U CN 220306184U CN 202321791237 U CN202321791237 U CN 202321791237U CN 220306184 U CN220306184 U CN 220306184U
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- Prior art keywords
- base
- circuit breaker
- reduced height
- chamber
- fixing frame
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- 238000005070 sampling Methods 0.000 claims description 25
- 230000000694 effects Effects 0.000 description 23
- 238000002955 isolation Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a circuit breaker with reduced height, which comprises a shell, wherein the shell comprises an upper cover, a middle seat, a base and a bottom plate, the upper cover and the middle seat are matched to form a first accommodating cavity, the middle seat and the base are matched to form a second accommodating cavity for fixing a transformer, the base and the bottom plate are matched to form a third accommodating cavity, a first through hole for communicating the second accommodating cavity and the third accommodating cavity is formed in the base, and a transformer part penetrates through the first through hole and stretches into the third accommodating cavity; the utility model reduces the overall height and meets the use environment of most use environments or small space requirements.
Description
Technical Field
The present utility model relates to a circuit breaker of reduced height.
Background
The existing circuit breaker comprises an upper cover, a middle seat, a base and a bottom plate, wherein a cavity is formed between the upper cover and the middle seat, parts such as an adapter plate and a motor are fixed in the cavity, a cavity is also formed between the middle seat and the base, and an operating mechanism, a moving and static contact assembly, a sampling transformer, a zero sequence transformer and the like are fixed in the cavity. A chamber is also formed between the base and the bottom plate, and the chamber is used for fixing a power supply board, a temperature sensor board and the like.
The main reason for the higher height of the current circuit breakers in the market is that the height of the internal transformer is standard in order to ensure normal detection operation, which results in an increase in the height of the chamber in which the transformer is fixed, and thus the height of the whole circuit breaker. However, in the actual installation process, the installation cannot be made in some environments due to the influence of the height. So the circuit breaker with the height reduced can be continued.
Disclosure of Invention
The utility model mainly solves the technical problem of providing a circuit breaker with reduced height.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a circuit breaker of reduction height, wherein, including the casing, the casing includes upper cover, well seat, base and bottom plate, and the upper cover forms first chamber of holding with well seat cooperation, and well seat forms the second of fixed mutual-inductor with the base cooperation and holds the chamber, and the base forms the third with the bottom plate cooperation and holds the chamber, is equipped with the first through-hole that the intercommunication second held the chamber and holds the chamber with the third on the base, and the mutual-inductor part passes first through-hole and stretches into to the third and hold the intracavity.
By adopting the structure, the transformer can be partially embedded into the third accommodating cavity, so that the height of the transformer in the second accommodating cavity is reduced, and the height of the whole circuit breaker is reduced. Compared with the circuit breaker with the mutual-inductor setting between well seat and base, through this kind of structure setting, can reduce the holistic height of circuit breaker, for example 25mm to realized the effect of being convenient for install, satisfied the operational environment of most operational environment or little space requirement.
The mutual inductor is a zero-sequence mutual inductor, and the zero-sequence mutual inductor is propped against the bottom plate.
The zero sequence transformer is abutted against the bottom plate, so that the zero sequence transformer is further embedded into the third accommodating cavity well, and the effect of reducing the height is achieved.
The base is provided with a fixed cavity towards one side of the bottom plate, the zero sequence transformer is provided with a fixed part, the fixed part is matched with the fixed cavity, and the bottom surface of the fixed part is propped against the bottom plate.
Through the cooperation of fixed part and fixed chamber, realized the fixed effect of zero sequence transformer, formed the limit wall laminating of fixed part and fixed chamber.
The zero sequence transformer comprises a zero sequence transformer body, and is characterized by further comprising a fixing frame, wherein the fixing frame is fixed in the zero sequence transformer body, and at least three mutually independent first channels are arranged in the fixing frame.
The setting of mount has formed the isolation effect between the different conducting strips, and the conducting strip passes corresponding first passageway, forms the isolation between conducting strip and the conducting strip, improves the protection effect, prevents to take place the short circuit.
Wherein, be equipped with on the base with mount one side complex fixed slot, with mount opposite side complex fastening structure.
The fixing frame is fixed on one side, and the fastening structure is adopted on the other side to realize fastening, so that the fixing frame is fixed more firmly.
Wherein, be equipped with first inclined plane on the base, be equipped with the second inclined plane on the mount, first inclined plane and second inclined plane cooperation form fastening structure.
Through the cooperation of the two inclined planes, the inclined wedge effect is formed, so that the base and the fixing frame are firmly fixed, and falling off is not easy to occur.
Wherein, still be equipped with baffle portion on the mount, baffle portion top and well seat offset.
The setting of baffle portion, first, increase the fixed stability of mount, form the centre gripping effect between base and the well seat, the second, baffle portion has still formed the isolation protection effect, prevents that the free normal use that influences the circuit board of ion.
The transformer is a sampling transformer, a groove is formed in the sampling transformer, a supporting plate is arranged on the base, and the supporting plate abuts against the groove.
The sampling transformer can also be embedded into the third chamber to reduce the height of the sampling transformer in the third chamber.
Wherein, be equipped with two at least cavities on the sampling transformer.
The sampling mutual inductor can be mutually independent and can also be of an integrated structure, namely a cavity matched with the conducting strip is arranged in the sampling mutual inductor.
The base is provided with a second channel communicated with the cavity, and the other end of the second channel extends towards the inner side of the second cavity.
The second channel is communicated with the first channel, so that an isolation protection effect between the conducting strips is formed.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
FIG. 2 is a cross-sectional view of embodiment 1 of the present utility model;
FIG. 3 is a cross-sectional view of embodiment 1 of the present utility model at another angle;
FIG. 4 is a schematic view showing a partial structure of embodiment 1 of the present utility model;
FIG. 5 is a schematic view showing a partial structure of embodiment 1 of the present utility model;
FIG. 6 is a cross-sectional view of FIG. 5;
fig. 7 is a schematic structural diagram of the zero sequence transformer in embodiment 1 of the present utility model matched with the fixing frame;
fig. 8 is a side view of fig. 7.
Detailed Description
Examples
Referring to fig. 1-8, a reduced height circuit breaker includes a housing 100.
The casing 100 comprises an upper cover 1, a middle seat 2, a base 3 and a bottom plate 4, wherein the upper cover 1 and the middle seat 2 are matched to form a first accommodating cavity 101, and a control module, an adapter plate, a motor and the like are mainly fixed in the first accommodating cavity 101.
The middle seat 2 and the base 3 are matched to form a second accommodating cavity 102 for fixing the transformer, and a zero sequence transformer 5, a sampling transformer 6, a conducting strip 7, an operating mechanism, a tripping mechanism, an arc extinguishing mechanism and the like are fixed in the second accommodating cavity 102.
The base 3 cooperates with the base plate 4 to form a third receiving cavity 103, the third receiving cavity 103 being adapted to cooperate with a stationary power supply board and a temperature sensor board.
In this embodiment, the upper cover 1, the middle seat 2 and the base 3 are arranged from top to bottom. The three parts are connected and fixed by bolts, and long bolts can directly pass through the three parts and can be fixed by two. The bottom plate 4 is embedded into the base 3 to realize the sealing effect of the lower opening of the base 3, and the fixing effect between the bottom plate 4 and the base 3 is realized through bolts.
In this embodiment, the transformer may be a zero sequence transformer 5, a sampling transformer 6, or two kinds of transformers. For better description, the present embodiment is described by taking the case that the zero sequence transformer 5 and the sampling transformer 6 are included in the circuit breaker as examples. In this embodiment, the first through hole 32 includes a first through hole i 321 that mates with the zero sequence transformer 5 and a first through hole ii 322 that mates with the sampling transformer 6.
In this embodiment, the circuit breaker takes a three-phase structure as an example, so the conductive sheet 7 on the circuit breaker includes a first conductive sheet 71 connected to the neutral line and three second conductive sheets 72 connected to the live line. The zero sequence transformer 5 and the sampling transformer 6 are used for collecting current in a loop, so that the zero sequence transformer and the sampling transformer are positioned on a conducting strip 7 at one side close to an output end.
The zero sequence transformer 5 is located in the second accommodation chamber 102 near the left side of the center. The base 3 is provided with a fixing cavity 31 extending downwards, the fixing cavity 31 is provided with a first through hole I321, and the first through hole I321, the fixing cavity 31 and the third accommodating cavity 103 are communicated. In this embodiment, the bottom surface of the fixing cavity 31 abuts against the bottom plate 4. The zero sequence transformer 5 lower extreme is equipped with fixed part 51, and the size and the fixed chamber 31 adaptation of fixed part 51, and fixed part 51 stretches into to fixed intracavity 31, and the lateral wall of fixed part 51 offsets with the limit wall of fixed chamber 31 this moment to realize fixed effect, the bottom surface of fixed part 51 offsets with bottom plate 4 simultaneously, makes zero sequence transformer 5 part imbed to the third and holds in the chamber 103, reduces zero sequence transformer 5 and holds the space that chamber 102 occupy at the second, realizes reducing high effect.
The zero sequence transformer 5 is of a hollow structure, which is the prior art, the second conductive sheet 72 needs to pass through the zero sequence transformer 5, and the first conductive sheet 71 can select whether to pass through according to actual requirements. The zero sequence transformer 5 is electrically connected with a circuit board inside the circuit breaker to form the effect of signal transmission.
A fixing frame 8 is fixed in the zero sequence transformer 5. The fixing frame 8 is partially located in the zero sequence transformer 5, and at least three mutually independent first channels 81 are arranged in the fixing frame 8, in this embodiment, the number of the first channels 81 is four, and the first channels are respectively a first channel I811, a first channel II 812, a first channel III 813 and a first channel IV 814.
The first channel I811 and the first channel II 812 are respectively arranged on two sides, the first channel I811 and the first channel II 812 are matched with the inner wall of the zero sequence transformer 5 to form a channel which can be communicated only front and back, and the two second conducting strips 72 positioned on two sides respectively penetrate through the corresponding first channel I811 and the corresponding first channel II 812 to form a fixing effect. Here, the two second conductive pieces 72 located at both sides are like a horizontally placed "table" shape, and the top of the table shape is located in the channel, and by adopting this structural arrangement, the interval between the second conductive pieces 72 is further increased, and at the same time, the second conductive pieces 72 can also form a clamping and fixing effect.
The first channels iii 813 and iv 814 are located on the upper and lower sides of the fixing frame 8, the first channel iii 813 is located below, and the second conductive sheet 72 located in the middle extends directly horizontally through the first channel iii 813. The first channel III 813 and the first channel IV 814 are matched with the inner wall of the zero sequence transformer 5 to form a channel which can only be communicated front and back.
First via iv 814 is configured to mate with first conductive sheet 71, where first conductive sheet 71 may or may not pass through to form a preformed structure. In addition, the connection between the first channel iii 813 and the first channel iv 814 is hollow, so that the hollow portion may be provided with a horizontal reinforcing rib for increasing the strength of the fixing frame 8.
The rest of the fixing frame 8 stretches into the outside of the zero sequence transformer 5, one side of the fixing frame 8 is matched with the fixing groove 36 on the base 3 to form an offset effect, the other side of the fixing frame 8 and the base 3 form a fastening structure, the fastening structure is specifically that a first inclined plane 33 is arranged on the base 3, a second inclined plane 82 is arranged on the fixing frame 8, and the first inclined plane 33 and the second inclined plane 82 are matched to form the fastening structure. Through the cooperation of the two inclined planes, an inclined wedge effect is formed, so that the base 3 and the fixing frame 8 are firmly fixed, and falling off is not easy to occur.
The fixing frame 8 is also provided with a partition plate part 83, and the top end of the partition plate part 83 is propped against the middle seat 2. The setting of baffle portion 83, first, increase the fixed stability of mount 8, form the centre gripping effect between base 3 and the well seat 2, the second, baffle portion 83 has still formed the isolation protection effect, prevents that the free normal use that influences the circuit board of electric ion.
In this embodiment, the fixing frame 8 is made of insulating material, and may be plastic or the like.
The sampling transformer 6 can be arranged separately corresponding to one conducting strip 7, or can be of an integral structure and connected and fixed with each other. In this embodiment, the sampling transformer 6 is an integral structure, i.e. three transformer components are disposed in the sampling transformer, three independent chambers 61 are correspondingly formed, and one chamber 61 corresponds to one second conductive sheet 72. The mutual inductor assembly is electrically connected with the circuit board to form a signal transmission effect.
The sampling transformer 6 is also located in the second accommodating cavity 102, and extends into the third accommodating cavity 103 through the first through hole II 322, where the height of the sampling transformer 6 extending into the third accommodating cavity 103 can be adjusted according to actual requirements. The sampling transformer 6 is provided with a groove 62, the base 3 is provided with a supporting plate 34, and the supporting plate 34 is propped against the groove 62. The sampling transformer 6 may also be lowered by being embedded in the third chamber 61, the height of the sampling transformer 6 within the third chamber 61. Here the support plate 34 is located between two adjacent first through holes ii 322.
Further, the base 3 is provided with three second channels 35 communicated with the cavity 61, the number of the second channels 35 is three, the three second channels 35 are respectively communicated with the first channels 81, and the second channels 35 are communicated with the corresponding first channels 81 to form an isolation protection effect between the conducting strips 7. Here, two adjacent second channels 35 are disposed separately, and the conductive sheet is located on the bottom surface of the second channels 35.
With this structural arrangement, the transformer can be partially embedded into the third accommodating chamber 103, so that the transformer is located at the second accommodating chamber 102 and the height of the whole circuit breaker is reduced. Compared with the circuit breaker with the mutual-inductor setting between well seat and base, through this kind of structure setting, can reduce the holistic height of circuit breaker, for example 25mm to realized the effect of being convenient for install, satisfied the operational environment of most operational environment or little space requirement.
Claims (10)
1. A reduced height circuit breaker, characterized by: including the casing, the casing includes upper cover, well seat, base and bottom plate, and the upper cover forms first chamber of holding with well seat cooperation, and well seat forms the second of fixed mutual-inductor with the base cooperation and holds the chamber, and the base forms the third with the bottom plate cooperation and holds the chamber, is equipped with the first through-hole that the intercommunication second held the chamber and the third held the chamber on the base, and the mutual-inductor part passes first through-hole and stretches into to the third and hold the intracavity.
2. A reduced height circuit breaker according to claim 1, wherein: the mutual inductor is a zero-sequence mutual inductor, and the zero-sequence mutual inductor is propped against the bottom plate.
3. A reduced height circuit breaker according to claim 2, wherein: the base is equipped with fixed chamber towards bottom plate one side, is equipped with fixed part on the zero sequence transformer, and fixed part cooperates with fixed chamber, and the bottom surface of fixed part offsets with the bottom plate.
4. A reduced height circuit breaker according to claim 1 or 2 or 3, wherein: the zero sequence transformer also comprises a fixing frame, wherein the fixing frame is fixed in the zero sequence transformer, and at least three mutually independent first channels are arranged in the fixing frame.
5. The reduced height circuit breaker of claim 4, wherein: the base is provided with a fixing groove matched with one side of the fixing frame and a fastening structure matched with the other side of the fixing frame.
6. The reduced height circuit breaker of claim 5, wherein: the base is provided with a first inclined plane, the fixing frame is provided with a second inclined plane, and the first inclined plane and the second inclined plane are matched to form a fastening structure.
7. A reduced height circuit breaker according to claim 5 or 6, wherein: the fixing frame is also provided with a baffle plate part, and the top end of the baffle plate part is propped against the middle seat.
8. A reduced height circuit breaker according to claim 1, wherein: the mutual inductor is a sampling mutual inductor, a groove is formed in the sampling mutual inductor, a supporting plate is arranged on the base, and the supporting plate abuts against the groove.
9. The reduced height circuit breaker of claim 8, wherein: at least two chambers are arranged on the sampling transformer.
10. The reduced height circuit breaker of claim 9, wherein: the base is provided with a second channel communicated with the cavity, and the other end of the second channel extends towards the inner side of the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321791237.7U CN220306184U (en) | 2023-07-10 | 2023-07-10 | Circuit breaker with reduced height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321791237.7U CN220306184U (en) | 2023-07-10 | 2023-07-10 | Circuit breaker with reduced height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306184U true CN220306184U (en) | 2024-01-05 |
Family
ID=89353904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321791237.7U Active CN220306184U (en) | 2023-07-10 | 2023-07-10 | Circuit breaker with reduced height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306184U (en) |
-
2023
- 2023-07-10 CN CN202321791237.7U patent/CN220306184U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |