CN210052700U - Narrow-volume plastic-shell circuit breaker - Google Patents
Narrow-volume plastic-shell circuit breaker Download PDFInfo
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- CN210052700U CN210052700U CN201921367091.7U CN201921367091U CN210052700U CN 210052700 U CN210052700 U CN 210052700U CN 201921367091 U CN201921367091 U CN 201921367091U CN 210052700 U CN210052700 U CN 210052700U
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- circuit breaker
- shell structure
- binding post
- case circuit
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- 230000007246 mechanism Effects 0.000 claims description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 230000003068 static effect Effects 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a narrow volume plastic shell circuit breaker, include the circuit breaker casing and install in the circuit breaker part of circuit breaker casing, the circuit breaker casing includes along the last shell structure and the lower shell structure of its direction of height stromatolite connection, and to go up binding post among the shell structure and the lower binding post of shell structure in stagger the setting from top to bottom, in order increasing, creepage distance between the binding post down, adopt this technical scheme, will go up shell structure and shell structure down and be used for expressing L utmost point unit and the N utmost point unit of 1P + N type plastic shell circuit breaker respectively, thereby reduce the plastic shell circuit breaker width to the half size of conventional product, the occupation space reduces greatly, product installation width has been reduced, make the mountable increase in quantity of plastic shell circuit breaker in the block terminal, can better satisfy user's user demand.
Description
Technical Field
The utility model relates to a low voltage apparatus technical field, concretely relates to narrow volume plastic shell circuit breaker.
Background
The plastic shell type circuit breaker has the protection functions of overload long time delay and short circuit instantaneous action, and is commonly used as a terminal switch or a branch switch in a low-voltage distribution system to replace a fuse and a knife switch which are commonly used in the past. Compared with a miniature circuit breaker, the molded case circuit breaker has the advantages that overcurrent and short-circuit faults are respectively protected by two sets of devices, the overcurrent protection action value can be manually adjusted, the current carrying capacity is higher, the arc extinguishing capacity is high, and the large short-circuit current can be borne, so that the molded case circuit breaker can be widely used in a distribution box and used as a power control switch and protection of equipment such as a distribution line, a motor, an illuminating circuit and an electric heater.
The plastic circuit breaker can be divided into 2P, 1P + N, 3P, 4P, 4P + N and other pole numbers, wherein the P pole refers to a knife pole provided with a protection device, the N pole refers to a neutral line or a zero line, the protection device is not arranged in the plastic circuit breaker, and only a conductive piece capable of being electrified is arranged in the plastic circuit breaker. Current 1P + N moulded case circuit breaker, including the casing with locate the P utmost point and the N utmost point in the casing side by side, the shaping has two mounting grooves that are used for installing P utmost point and N utmost point in the casing promptly, is different from miniature circuit breaker's multipolar structure of assembling, and moulded case circuit breaker's all utmost points are located on same casing, and are separated by baffle and cell wall between the adjacent two poles of the earth, can satisfy the alternate electrical distance requirement like this, avoid appearing creepage short circuit phenomenon. However, in the actual use process, the molded case circuit breakers are usually transversely installed on the installation rails of the distribution box side by side, when more electric equipment and distribution lines exist, the box space is limited, and in addition, the molded case circuit breakers are large in size and large in occupied space, so that the number of the installed molded case circuit breakers in the box is small, and the use requirements of users can not be well met.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming that the moulded case circuit breaker among the prior art all transversely installs side by side on the installation rail of block terminal, and its volume is great, mountable problem a small in quantity in the box to a small is provided, and the mountable is a large amount of moulded case circuit breaker in the block terminal.
In order to solve the technical problem, the utility model provides a narrow volume plastic shell circuit breaker, including the circuit breaker casing with install in at least one circuit breaker part of circuit breaker casing, its characterized in that, the circuit breaker casing includes the last shell structure and the lower shell structure of connecting along its direction of height stromatolite, the both ends of going up shell structure are provided with two and go up binding post, down the shell structure both ends be provided with go up two lower binding post that binding post staggers from top to bottom.
Preferably, two ends of the lower shell structure extend to be located outside two ends of the upper shell structure respectively, and an L-shaped staggered step is formed between the upper wiring terminal and the lower wiring terminal.
Preferably, the lower shell structure and the lower shell structure are fixedly connected or integrally formed.
As a preferable scheme, a groove structure between the two lower wiring terminals is formed at the top of the lower shell structure, and the bottom end of the upper shell structure is fittingly accommodated in the groove structure.
Preferably, the circuit breaker unit includes an L-pole assembly installed in the upper housing structure to connect the two upper connection terminals, and an N-pole assembly installed in the lower housing structure to connect the two lower connection terminals.
Preferably, the lower housing structure includes a mounting cavity disposed between the two lower connection terminals along a length direction thereof.
Preferably, the N-pole assembly includes a conductive plate mounted in the mounting cavity and connected to the two lower connection terminals.
As a preferred scheme, the L-pole assembly includes a contact structure connecting the two upper connection terminals, and an operating mechanism for driving a fixed contact and a movable contact in the contact structure to be in contact with or disconnected from each other, and the operating mechanism includes an operating handle rotatably disposed on the upper housing structure.
As a preferred scheme, the L-pole assembly further comprises an overload protection mechanism and an overcurrent protection mechanism which are installed in the upper shell structure, and the overload protection mechanism and the overcurrent protection mechanism respectively drive the trip rod of the operating mechanism to rotate when being triggered, so as to realize the opening of the molded case circuit breaker.
As a preferred scheme, the overcurrent protection mechanism is a clapper type electromagnetic release, which comprises a support frame, a static iron core and an armature iron which are arranged on the support frame, and a reset structure arranged between the support frame and the armature iron, wherein when the static iron core generates electromagnetic force, the armature iron is attracted to overcome the tension of the reset structure, and swings towards the direction close to the static iron core.
Compared with the prior art, the technical scheme of the utility model have the following advantage:
1. the utility model provides an among the shell circuit breaker is moulded to narrow volume, go up shell structure and shell structure can be used for showing L utmost point unit and the N utmost point unit that 1P + N type moulded the shell circuit breaker respectively down, carry out the stromatolite connection on the direction of height according to last shell structure and shell structure down, thereby mould 1P + N type shell circuit breaker width and reduce to conventional product half size, occupation space reduces greatly, and, through last binding post with last among the shell structure and the lower binding post of shell structure in stagger the setting from top to bottom down, increase in, creepage distance between the binding post down, in order to satisfy the requirement of alternate electric spacing, safety and reliability, adopt this technical scheme, product installation width has been reduced, make the mountable increase in quantity of moulded the shell circuit breaker in the block terminal, can better satisfy user's user demand.
2. The utility model provides an among the narrow volume moulded case circuit breaker, through go up binding post with form the dislocation step of L type between the binding post down, make go up binding post with on the wiring position between the binding post is no longer the same plane, play the effect that increases alternate creepage distance, avoid taking place alternate creepage phenomenon, guarantee moulded case circuit breaker's safe handling.
3. The utility model provides an among the narrow volume plastic shell circuit breaker, through set up the current conducting plate that links to each other with two lower binding post in the installation cavity, insert two lower binding post respectively when outside neutral conductor, can realize switching on of the inside return circuit of shell structure down through the current conducting plate, simple structure, simple to operate, the cooperation is connected reliably.
4. The utility model provides an among the narrow volume moulded case circuit breaker, go up housing structure's bottom looks adaptation and hold in last housing structure's groove structure, this kind of structure setting rationally optimizes product spatial layout, makes and goes up housing structure and play the effect of subsiding in housing structure down, is favorable to reducing moulded case circuit breaker's overall height.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structural view of a narrow-volume plastic case circuit breaker provided by the present invention;
fig. 2 is a top view of the narrow volume plastic case circuit breaker of the present invention;
fig. 3 is a schematic structural diagram of the overload protection mechanism and the overcurrent protection mechanism of the present invention;
description of reference numerals: 1-upper shell structure, 11-upper connecting terminal, 2-lower shell structure, 21-lower terminal structure, 22-installation cavity, 3-offset step, 4-conductive plate, 5-static contact, 6-movable contact, 7-operating mechanism, 71-operating handle, 72-trip rod, 8-overload protection mechanism, 81-bimetallic strip, 82-adjusting screw, 9-overcurrent protection mechanism, 91-support frame, 92-static iron core, 93-armature and 94-reset structure.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that 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 is to be noted that, unless otherwise explicitly specified or limited, 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment is described in detail below with reference to the accompanying drawings:
this embodiment provides as shown in fig. 1-3 a narrow volume moulded case circuit breaker, including the circuit breaker casing with install in at least one circuit breaker part of circuit breaker casing, the circuit breaker casing includes along its direction of height stromatolite connection last shell structure 1 and shell structure 2 down, the both ends of going up shell structure 1 are provided with two and go up binding post 11, down shell structure 2's both ends be provided with go up binding post 11 and go up two lower binding post 21 that stagger from top to bottom, the moulded case circuit breaker of this embodiment is preferred I P + N type moulded case circuit breaker, it corresponds L utmost point unit and the N utmost point unit for moulded case circuit breaker respectively to go up shell structure 1 and shell structure 2 down.
The above-mentioned embodiment is the core technical scheme of this embodiment, carry out the stromatolite connection on the direction of height according to last shell structure and lower shell structure, thereby reduce 1P + N type plastic shell circuit breaker width to the half size of conventional product, occupation space greatly reduces, and, through 21 lower staggered settings on the last binding post 11 in the last shell structure 1 and the lower binding post in the shell structure 2 down, increase including, creepage distance between the binding post, in order to satisfy alternate electric spacing's requirement, safety and reliability, adopt this technical scheme, the product installation width has been reduced, save material, make the mountable quantity increase of plastic shell circuit breaker in the block terminal, can better satisfy user's user demand.
It should be noted that, the L pole unit of the molded case circuit breaker is to protect and break, the circuit breaker components arranged inside the molded case circuit breaker are more, the volume setting is larger, the N pole unit is used by connecting neutral line and zero line, and usually there is no protection device and no contact structure, i.e. there is no protection and break function, therefore, the internal structure setting of the N pole unit is very simple, as long as it can connect neutral line or zero line, the extra space can be reduced when vertical layout is adopted, it is not necessary to be as high as the L pole unit, so the volume setting of the lower shell structure representing the N pole unit is smaller, and the upper shell structure corresponding to the L pole unit is larger than the lower shell structure, the design benefit lies in that the width of the molded case circuit breaker of the present invention is reduced by half, and the height is increased by a very small part, the production material of the product is saved on the whole, and the cost is reduced.
As a preferred embodiment, as shown in fig. 1, the both ends of lower shell structure 2 extend respectively and are located go up the both ends outside of shell structure 1, and go up binding post 11 with form the dislocation step 3 of L type between the binding post 21 down, with the help of dislocation step 3 makes go up binding post 11 with on the wiring position between the binding post 21 is no longer the same plane, play the effect that increases alternate creepage distance, avoid taking place alternate creepage phenomenon, guarantee moulded case circuit breaker's safe handling.
Go up housing structure 1 with housing structure 2's connected mode is not only down, in this embodiment, go up housing structure 1 with housing structure 2 is fixed connection down, can adopt threaded fastener, buckle structure etc. to realize fixed mounting, also can set up as required to integrated into one piece structure shaping, and the shaping is made more conveniently, and structural stability is better.
As shown in fig. 1, the top shaping of lower shell structure 2 has and is located two groove structure between lower binding post 21, the bottom looks adaptation of going up shell structure 1 hold in among the groove structure, this kind of structure setting has rationally optimized molded case circuit breaker's high spatial layout, makes shell structure 1 play the effect of subsiding in lower shell structure 2, is favorable to reducing molded case circuit breaker's overall height.
In this embodiment, the circuit breaker part including install in go up in the shell structure 1 with connect two go up binding post 11's the L utmost point subassembly, and install in shell structure 2 is interior with connecting two down binding post 21's the N utmost point subassembly, wherein, go up binding post 11 and lower binding post 21 respectively including set up in go up the wiring hole on shell structure 1 and the 2 terminal surfaces of shell structure down with set up the wiring knob in the wiring hole, and threaded connection in bolt on the wiring knob, when the wire penetrated the wiring knob through the wiring hole, firmly fixed the wire through the bolt.
The arrangement of the N-pole assembly is described in detail below with reference to fig. 1-2:
The arrangement of the L-pole assembly is described in detail below with reference to fig. 1 and 3:
the L pole component comprises a contact structure connected with two upper wiring terminals 11 and an operating mechanism 7 for driving a static contact 5 and a movable contact 6 in the contact structure to be in contact or disconnected, the operating mechanism comprises an operating handle 71 which is rotatably arranged on the upper shell structure 1, wherein the static contact 5 is connected with the upper wiring terminals, when the operating handle rotates to a switching-on position, the static contact 5 and the movable contact 6 are in closed contact through the operating mechanism 7, and when the operating handle rotates to a switching-off position, the static contact 5 and the movable contact 6 are disconnected through the operating mechanism 7.
As a preferred embodiment, the operating mechanism 7 further has a trip rod 72 for enabling the operating mechanism to trip and open the brake, that is, the trip rod 72 drives the fixed contact 5 and the movable contact 6 to be separated by the operating mechanism when triggered, and referring to fig. 3, the L-pole assembly further includes an overload protection mechanism 8 and an overcurrent protection mechanism 9 installed in the upper housing structure 1 and connected to the movable contact by a flexible connection, and the overload protection mechanism 8 and the overcurrent protection mechanism 9 respectively drive the trip rod 72 of the operating mechanism 7 to rotate when triggered, so as to achieve the opening of the molded case circuit breaker. As a specific structural setting, the overload protection structure 8 includes a bimetal 81 and an adjusting screw 82 disposed at one end of the bimetal, the triggering distance between the adjusting screw 82 and the trip rod is adjustable, and the adjusting screw 82 drives the trip rod 72 to act under the action of the bimetal 81, so as to realize the overload protection effect of the molded case circuit breaker.
According to the utility model discloses a plastic case circuit breaker's width setting diminishes, in order to satisfy the installation requirement, overcurrent protection mechanism 9 no longer adopts the great direct action formula electromagnetism release of space volume, but preferably adopts clapper formula electromagnetism release, has the characteristics that the volume is less, trigger action reacts rapidly, when the electric current through the circuit breaker increases to certain value, clapper formula electromagnetism release can drive the circuit breaker rapid tripping operation, thereby reaches the function of circuit protection, and specific structure sets up and can refer to figure 3, clapper formula electromagnetism release includes support frame 91, and sets up in the quiet iron core 92 and the armature 93 of support frame, and sets up the reset structure 94 between support frame 91 and armature 93, reset structure is the extension spring, when electromagnetism release circular telegram, namely support frame and quiet iron core pass through the electric current and produce magnetic field around the quiet iron core, when the static iron core 92 generates electromagnetic force, the armature 93 is attracted to overcome the pulling force of the reset structure 94, and swings towards the direction close to the static iron core, so that the armature is attracted to drive the trip rod 72 to act in the swinging process, and the overcurrent protection effect of the molded case circuit breaker is realized.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides a shell circuit breaker is moulded to narrow volume, includes the circuit breaker casing with install in at least one circuit breaker part of circuit breaker casing, its characterized in that the circuit breaker casing includes along last shell structure (1) and lower shell structure (2) that its direction of height stromatolite is connected, the both ends of going up shell structure (1) are provided with two and go up binding post (11), the both ends of shell structure (2) down be provided with go up binding post (11) two lower binding post (21) staggered from top to bottom.
2. The narrow volume plastic case circuit breaker of claim 1, wherein: the both ends of shell structure (2) extend respectively down and are located go up the both ends outside of shell structure (1), and go up binding post (11) with form dislocation step (3) of L type between binding post (21) down.
3. The narrow volume plastic case circuit breaker of claim 2, wherein: the upper shell structure (1) and the lower shell structure (2) are fixedly connected or integrally formed.
4. The narrow volume plastic case circuit breaker of claim 3, wherein: the top shaping of shell structure (2) down has and is located two groove structure between the binding post down, the bottom looks adaptation of going up shell structure (1) is held in the groove structure.
5. The narrow volume plastic case circuit breaker of any one of claims 1-4, wherein: the circuit breaker part is including installing in go up in shell structure (1) in order to connect two go up the L utmost point subassembly of binding post (11), and install in shell structure (2) down in order to connect two the N utmost point subassembly of binding post (21) down.
6. The narrow volume plastic case circuit breaker of claim 5, wherein: the lower shell structure (2) comprises a mounting cavity (22) which is arranged between the two lower wiring terminals (21) along the length direction of the lower shell structure.
7. The narrow volume plastic case circuit breaker of claim 6, wherein: the N pole assembly comprises a conductive plate (4) which is arranged in the mounting cavity (22) and connected with the two lower wiring terminals.
8. The narrow volume plastic case circuit breaker of claim 5, wherein: the L pole assembly comprises a contact structure connected with the two upper wiring terminals (11) and an operating mechanism (7) for driving a static contact (5) and a movable contact (6) in the contact structure to be in contact or disconnected, and the operating mechanism comprises an operating handle (71) which is rotatably arranged on the upper shell structure (1).
9. The narrow volume plastic case circuit breaker of claim 8, wherein: the L pole assembly further comprises an overload protection mechanism (8) and an overcurrent protection mechanism (9) which are installed in the upper shell structure (1), and the overload protection mechanism (8) and the overcurrent protection mechanism (9) are respectively driven to rotate a tripping rod (72) of the operating mechanism (7) when triggered so as to realize the opening of the molded case circuit breaker.
10. The narrow volume plastic case circuit breaker of claim 9, wherein: overcurrent protection mechanism (9) are clapper formula electromagnetism release, and it includes support frame (91), and sets up in quiet iron core (92) and armature (93) of support frame, and set up and be in reset structure (94) between support frame (91) and armature (93), when quiet iron core (92) produced the electromagnetic force, attract armature (93) overcome reset structure (94)'s pulling force, towards being close to the direction swing of quiet iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367091.7U CN210052700U (en) | 2019-08-21 | 2019-08-21 | Narrow-volume plastic-shell circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921367091.7U CN210052700U (en) | 2019-08-21 | 2019-08-21 | Narrow-volume plastic-shell circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210052700U true CN210052700U (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921367091.7U Active CN210052700U (en) | 2019-08-21 | 2019-08-21 | Narrow-volume plastic-shell circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210052700U (en) |
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2019
- 2019-08-21 CN CN201921367091.7U patent/CN210052700U/en active Active
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