CN107369573A - Motor protection breaker - Google Patents
Motor protection breaker Download PDFInfo
- Publication number
- CN107369573A CN107369573A CN201610309057.9A CN201610309057A CN107369573A CN 107369573 A CN107369573 A CN 107369573A CN 201610309057 A CN201610309057 A CN 201610309057A CN 107369573 A CN107369573 A CN 107369573A
- Authority
- CN
- China
- Prior art keywords
- contact
- group
- installation cavity
- base
- pedestal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/346—Details concerning the arc formation chamber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of motor protection breaker; including base; the pedestal being installed on base; the arc extinguishing grid pieces group and contact being installed in base are supported; it is installed on the moving contact group that contact is supported; the both sides of the base are provided with the first installation cavity for being used for installing arc extinguishing grid pieces group, and the middle part of base is provided with the contact for being used to install contact support and supports installation cavity；Pedestal, static contact group, pyromagnetic group, insulation board and contact support that the first installation cavity is closed to the confined space to form an arc extinguishing together；Wherein, the top of one group of static contact of static contact group and pyromagnetic group of the first installation cavity for being installed on base side, another group of static contact and insulation board are installed on the top of the first installation cavity of base opposite side, and two terminal contacts of the moving contact of moving contact group stretch to contact respectively supports the contact of two groups of static contacts of both sides and both sides to be oppositely arranged.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, more particularly to a kind of motor protection breaker.
Background technology
During the opening and closing of low-voltage electrical apparatus, particularly when disjunction high current, it can be produced in air dielectric
Switching arc, it is the metal vapors by contact that electric arc is lighted during beginning, and then ambient air medium is progressively entered
Entering arc gap makes metallic phase arc be changed into the gaseous phase arc supported by gas ionization, and electric arc is a HTHP
Ionized gas, arcing gas consumingly destroys the material of contactant, and therefore, people use grid in recent years
Arc extinguishing, on the one hand as soon as possible by arc transfer to the semi-enclosed independent arc-chutes in rear end, produced by grid
The superposition of the proximal pole pressure drop of raw many short arcs improves arc voltage, to suppress increasing for short circuit current；It is another
Aspect causes pressure to rise using high arc temperature in arc-chutes, and the air-blowing that air-flow is formed by exhaust duct acts on
With the compartmentation by grid to electric arc, quick extinguishing electric arc is realized.Traditional motor protection circuit breaker
Arc-chutes are assemblied by pedestal and base, because pedestal need to reserve static contact installation window and dynamic tactile bridge driving
Window, therefore opened wide on arc-chutes rear end and top, arc stream caused by disjunction fault current, one is
Towards gas outlet, another stock backwards to gas outlet, two strands of air-flows are escaped by above-mentioned two classes window, so that electric
Arc air-flow air pressure reduces, and influences driving velocity of the gas to electric arc.
The content of the invention
The defects of it is an object of the invention to overcome prior art, there is provided a kind of simple and compact for structure, performance peace
It is complete stable, the low motor protection breaker of cost.
To achieve the above object, present invention employs following technical scheme：
A kind of motor protection breaker, including base 1, the pedestal 2 being installed on base 1, are installed on
Arc extinguishing grid pieces group 3 and contact in base 1 support 8, the moving contact group 4 being installed in contact support 8,
The both sides of the base 1 are provided with the first installation cavity 103 for being used for installing arc extinguishing grid pieces group 3, base 1
Middle part, which is provided with, to be used to install the contact support installation cavity 102 that contact supports 8；Pedestal 2, static contact group 6, heat
Magnetic group 5, insulation board 7 and contact support 8 to close the first installation cavity 103 to form arc extinguishing together
Confined space；Wherein, one group of static contact of static contact group 6 and pyromagnetic group 5 are installed on the of the side of base 1
The top of one installation cavity 103, another group of static contact and insulation board 7 are installed on the first of the opposite side of base 1
The top of installation cavity 103, two terminal contacts of the moving contact of moving contact group 4 stretch to contact respectively supports 8 liang
The contact of two groups of static contacts of side and both sides is oppositely arranged.
Further, the both sides of the pedestal 2 are respectively provided with the second installation cavity of installation static contact group 6
203, the middle part of pedestal 2, which is provided with, is used for the contact support lock chamber 202 that fixed contact supports 8, one group of stationary contact
Head is arranged on pyromagnetic group 5 in second installation cavity 203 of side, and another group of static contact and insulation board 7 are pacified
In the second installation cavity 203 of opposite side；Pedestal 2 be arranged on base 1 on make the second installation cavity 203,
Contact supports lock chamber 202 to support installation cavity 102 to dock with the first installation cavity 103 and contact respectively.
Further, one group of static contact is installed on pyromagnetic group 5 of lower section, and base 1 is installed on after being assembled together
The top of first installation cavity 103 of side；Described pyromagnetic group 5 includes thermal element 51 and electromagnetic component 52,
Static contact is installed on the first installation cavity 103 of the fixed plate closed downwards side of thermal element 51, electromagnetic component
52 are installed on above the fixed plate of thermal element 51.
Further, one end of another group of static contact is connected with insulation board 7, and insulation board 7 is located at the side of pedestal 2
Wall side, the top of the first installation cavity 103 of the opposite side of base 1 is installed on after being assembled together；It is described
Static contact includes forming the first pleated sheet 61 and the second pleated sheet 62 being parallel to each other by one piece of metal sheet,
Second pleated sheet 62 is located at the lower section of the first pleated sheet 61, the first pleated sheet 61 and the second pleated sheet 62
One end connects, and the other end is spaced to form the first gap 601, and insulation board 7 is inserted in the first gap 601
It is fixedly connected with static contact.
Further, the contact supports 8 to include the first installation cavity 103 of connection and contact supports installation cavity 102
Contact support seat 83, contact support body 81 is arranged in contact support seat 83 and can slide up and down drive
Moving contact group 4 is acted, and contact support body 81 is stretched out outside contact support seat 83.
Further, the both sides of base 1 are provided with the base phase partition 101 for being used for separating each pole conducting system,
Form multiple first installation cavities 103；The both sides of pedestal 2 be provided be used to separating each pole conducting system with bottom
The seat corresponding pedestal phase partition 201 of phase partition 101, forms multiple second installation cavities 203；It is described
The contact of pedestal 2 supports the both sides of lock chamber 202 to be provided with and 201 vertically disposed two pieces of pedestal phase partition
It is vertical between first demarcation strip 202a, two piece of first demarcation strip 202a to be provided with the second demarcation strip 202b, second
Demarcation strip 202b divides contact support lock chamber 202 supports fixation to divide chamber 2021, contact branch for multiple contacts
Hold 8 contact support seat 83 supports fixation to divide chamber 2021 to dock with the contact of pedestal 2, contact support body
81 support fixation to divide the size of chamber 2021 to match with contact, and contact support body 81 can stretch into contact and support to fix
Divide in chamber 2021.
Further, the contact supports that 8 include multiple contact supporters corresponding with each pole conducting system respectively,
Each contact supporter includes contact support seat 83, and contact support seat 83 is provided with extension to both sides extension respectively
Plate 82, be arranged in parallel two pieces of extension boards 82 per side, and two pieces of extension boards 82 per side stretch to the every of homonymy respectively
Install in individual arc extinguishing grid pieces and with arc extinguishing grid pieces and fix.
Further, the contact support seat 83 is provided with towards the end both sides of pedestal 2 is used to close contact support
The crossbeam 836 of lock chamber 202, both ends protrusion are provided with mounting post 837；The contact supports fixation to divide chamber 2021
Both ends protrusion be provided with securing plate 231, securing plate 231 towards contact support seat 83 side protrusion provided with
837 corresponding two fixed columns 232 of mounting post, formed between two fixed columns 232 and pacified with mounting post 837
The mounting groove 233 closed is assembled, after the mounting post 837 at the both ends of contact support seat 83 is loaded on mounting groove 233, two
The crossbeam 836 of side supports the first demarcation strip 202a snug fits of the both sides of lock chamber 202 with contact.
Further, in addition to touch spring 9, the middle part of the contact support seat 83 are provided with for installing contact
The body installation cavity 831 of spring 9 and contact support body 81, the middle part of contact support body 81 are provided with peace
The moving contact installation cavity 811 of moving contact is filled, the both sides of contact support seat 83, which are respectively equipped with, to be allowed above and below moving contact
Mobile moving contact movable cavity 832, the bottom of contact support body 81 are provided with the one end for allowing touch spring 9
The spring passed through stretches into chamber 812, and spring stretches into chamber 812 and set with the insertion of moving contact installation cavity 811；Contact
After support body 81 loads body installation cavity 831, moving contact sequentially passes through the He of moving contact movable cavity 832
Moving contact installation cavity 811 is simultaneously installed on contact support body 81, and the two of contact support seat 83 are stretched at both ends
Side, one end of touch spring 9 stretch into chamber 812 through spring and stretch to the inside of moving contact installation cavity 811 with moving
The lower surface of contact offsets, and the bottom of the other end and body installation cavity 831 offsets.
Further, the lateral wall protrusion of the extension board 82 is provided with and base phase partition 101 or base 1
Madial wall installation coordinate retaining convex rib 821；The retaining convex rib 821 is L-shaped, including the first convex tendon
8211 and second convex tendon 8212 vertical with the first convex tendon 8211, one end bottom of arc extinguishing grid pieces be held on
On one convex tendon 8211, one end end of arc extinguishing grid pieces offsets with the second convex tendon 8212.
Motor protection of the present invention supports one with breaker using static contact group, pyromagnetic group, insulation board and contact
Rise and the first installation cavity of base both sides is closed into confined space, prevent arcing gas from escaping, contact is supported will
The region that dynamic/static contact contact produces electric arc is divided into two regions, and after producing electric arc, electric arc is backwards to arc extinguishing
The side of grid group runs into contact and supports to produce superposition after stopping, increases arcing gas voltage, promotes electric arc to add
Speed is moved progress arc extinguishing heel row to arc extinguishing grid pieces group and gone out outside product, improves arc extinguishing speed, reduces in product
The damage of parts.One group of static contact and the pyromagnetic group of side upper area for being used to close the first installation cavity.
Another group of static contact and insulation board are used for the opposite side upper area for closing the first installation cavity, prevent electric arc gas
Body is escaped from upper area.
Brief description of the drawings
Fig. 1 is the overall structure profile of motor protection breaker of the present invention；
Fig. 2 is the substructure profile of motor protection breaker of the present invention；
Fig. 3 is the exploded view of motor protection breaker of the present invention；
Fig. 4 is pedestal of the present invention and the static contact group, insulation board and pyromagnetic group of the exploded view that are installed on pedestal；
Fig. 5 is pedestal of the present invention and static contact group, insulation board and pyromagnetic group of installation diagram；
Fig. 6 is that motor protection circuit breaker base of the present invention is connected sectional view with pedestal；
Fig. 7 is the structural representation of base of the present invention；
Fig. 8 is the stereogram that contact of the present invention is supported；
Fig. 9 is the profile that contact of the present invention is supported；
Figure 10 is static contact and pyromagnetic group of scheme of installation；
Figure 11 is static contact and pyromagnetic group of exploded view；
Figure 12 is static contact and pyromagnetic group of exploded view；
Figure 13 is the stereogram of static contact；
Figure 14 is the stereogram of insulation board.
Embodiment
The embodiment provided below in conjunction with accompanying drawing 1 to 14, further illustrate that the motor protection of the present invention is used
The embodiment of breaker.The motor protection of the present invention is not limited to retouching for following examples with breaker
State.
As shown in Figure 1, 2, motor protection breaker of the present invention, including base 1 and pedestal 2, it is described
Pedestal 2 is installed on base 1.Arc extinguishing grid pieces group 3 is installed, two groups of arc extinguishing grid pieces group 3 go out on base 1
Arc grid is located at the both sides of base 1 respectively, and the middle part of base 1 is provided with contact and supports 8, and contact is supported on 8
Moving contact group 4 is installed；Static contact group 6, two groups of static contacts difference of static contact group 6 are installed on pedestal 2
Located at the both sides of pedestal 2；Also include pyromagnetic group 5 and insulation board 7 being installed on pedestal 2, one of which is quiet
Contact is provided with pyromagnetic group 5, and another group of static contact is provided with insulation board 7.The moving contact of the moving contact group 4
Two terminal contacts stretch to respectively contact support 8 both sides it is relative with the contact of two groups of static contacts of the both sides of pedestal 2
Set, contact supports the contact of 8 drive moving contacts and static contact and separated to carry out closed and disconnected circuit.
As shown in figs. 1-7, motor protection breaker of the present invention, the both sides of the base 1, which are provided with, to be used to pacify
The first installation cavity 103 of arc extinguishing grid pieces group 3 is filled, the middle part of base 1, which is provided with, to be used to install contact support 8
Contact supports installation cavity 102；Static contact group 6, pyromagnetic group 5, insulation board 7 and contact support 8 together by the
The closing of one installation cavity 103 forms the confined space of an arc extinguishing；Wherein, one group of stationary contact of static contact group 6
The top of head and pyromagnetic group 5 the first installation cavity 103 for being installed on the side of base 1, another group of static contact and
Insulation board 7 is installed on the top of the first installation cavity 103 of the opposite side of base 1, and the dynamic of moving contact group 4 touches
Two terminal contacts of head stretch to contact respectively supports the contact of two groups of static contacts of 8 both sides and both sides to be oppositely arranged.
Motor protection of the present invention is supported together to breaker using static contact group, pyromagnetic group, insulation board and contact
The first installation cavity closing confined space of base both sides, prevents arcing gas from escaping, contact is supported sound
The region that contact produces electric arc is divided into two regions, and after producing electric arc, electric arc is backwards to arc extinguishing grid pieces
Group side run into contact support stop after produce superposition, increase arcing gas voltage, promote electric arc accelerate to
The motion of arc extinguishing grid pieces group carries out arc extinguishing heel row and gone out outside product, improves arc extinguishing speed, reduces to interiors of products group
The damage of part.
As Figure 4-Figure 6, specifically, the both sides of the pedestal 2 are respectively provided with installation static contact group 6
The second installation cavity 203, the middle part of pedestal 2, which is provided with, to be used for fixed contact and supports 8 contact to support lock chamber
202, one group of static contact and pyromagnetic group 5 are arranged in the second installation cavity 203 of side, another group of static contact
It is arranged on insulation board 7 in second installation cavity 203 of opposite side；Pedestal 2, which is arranged on base 1, makes the
Two installation cavities 203, contact support lock chamber 202 to support to install with the first installation cavity 103 and contact respectively
Chamber 102 docks.
As shown in figs. 1-7, static contact group 6, pyromagnetic group 5, the both sides first of the closed base 1 of insulation board 7 pacify
Fill the upper area of cavity 103.One group of static contact is installed on pyromagnetic group 5 of lower section, pacifies after being assembled together
The top of the first installation cavity 103 loaded on the side of base 1, for closing the one of the first installation cavity 103
Side upper area；Pyromagnetic group 5 is the error protection element in motor protection breaker, generally includes to use
Thermal element in overload protection and the electromagnetic component for short-circuit protection, thermal element generally use bimetal leaf,
The present invention above closed base side, without increasing extra element, ties pyromagnetic group 5 together with static contact
Structure is compact easy to assembly.Described pyromagnetic group 5 includes thermal element 51 and electromagnetic component 52, and static contact is installed on heat
Below the fixed plate of element 51, electromagnetic component 52 is installed on above the fixed plate of thermal element 51；Fixed plate one
End is provided with the bimetal leaf vertical with fixed plate, and one end of static contact extends vertically upwards and the buckle of thermal element 51
Connection, fixed plate and the static contact of thermal element close the cavity of side jointly.One end of static contact is vertically upward
Extension is provided with the T-shaped buckle arm 611 that is snapped connection with thermal element 51, one end side wall of thermal element 51 be provided with
The T-shaped buckle slot 511 that T-shaped buckle arm 611 is clasped；T-shaped buckle arm 611 includes one end of static contact
The first buckle arm 611a of setting is extended vertically upwards, one end side wall of thermal element 51 is provided with and the first buckle arm
611a installation coordinate the first buckle slot 511a, the first buckle arm 611a end to both sides extension be provided with
The end of the second vertical first buckle arm 611a buckle arm 611b, the first buckle slot 511a extends to both sides
Provided with second the buckle slot 511b, second buckle arm 611b vertical with the first buckle slot 511a and the second buckle
Groove 511b side wall is clasped (reference picture 10-14).One end of another group of static contact is connected with insulation board 7,
Insulation board 7 is located at the side wall side of pedestal 2, and the first peace of the opposite side of base 1 is installed on after being assembled together
The top of cavity 103 is filled, for closing the opposite side upper area of the first installation cavity 103, such as Figure 10-13
Shown, the static contact includes forming the first pleated sheet 61 and second being parallel to each other by one piece of metal sheet
Pleated sheet 62, the second pleated sheet 62 are located at the lower section of the first pleated sheet 61, the first pleated sheet 61 and the second folding
One end connection of lamination 62, the other end is spaced to form the first gap 601, between the insertion of insulation board 7 first
It is fixedly connected in gap 601 with static contact.One end of insulation board 7 be provided with can be inserted into the first gap 601 with it is quiet
The first connecting portion 71 of contact connection, the surface protrusion of first connecting portion 71 are provided with and the clamping of the first gap 601
The reinforcement convex tendon 711 of cooperation, limiting plate of the surface protrusion provided with the spacing installation site of insulation board 7 of insulation board 7
72 (reference picture 10-14), strengthen the upper surface that convex tendon 711 is located at first connecting portion 71 in figure, also may be used certainly
With in lower surface, figure limiting plate 72 be located at the upper surface of insulation board 7 protrusion set cross spacing plate and
The longitudinal spacing plate that protrusion is set located at the lower surface of insulation board 7, the other end of insulation board 7 are provided with and pedestal 2
Side wall installation coordinate mounting structure.
As Figure 7-9, formed between the first installation cavity 103 of the both sides of base 1 and accommodate contact support 8
Contact support installation cavity 102, the contact supports 8 to include the first installation cavity 103 of connection and contact is supported
The contact support seat 83 of installation cavity 102, contact support body 81 be arranged in contact support seat 83 and can on
Lower slider drives moving contact group 4 to act, and contact support body 81 is stretched out outside contact support seat 83.Contact branch
Contact is supported the side-closed of installation cavity 102, contact branch by the first installation cavity 103 for holding the connection of seat 83 both sides
Hold body 81 to slide in contact support seat 83, closing contact supports the region at the top of installation cavity 102.Touch
The contact that the part that head support body 81 is stretched out outside contact support seat 83 can be stretched into the middle part of pedestal supports lock chamber
202。
As shown in Fig. 3,4,7, contact support body 81 is supported to fix with contact divides the mutual cooperation of chamber 2021 to seal
Close the central region of base 1 and pedestal 2.The both sides of base 1, which are provided with, to be used to separate each pole conducting system
Base phase partition 101, form multiple first installation cavities 103；The both sides of pedestal 2, which are provided with, to be used to separate respectively
The pedestal phase partition 201 corresponding with base phase partition 101 of pole conducting system, form multiple second installations
Cavity 203；The contact of the pedestal 2 supports the both sides of lock chamber 202 are provided with to be hung down with pedestal phase partition 201
Vertically the second demarcation strip is provided between two piece of first demarcation strip 202a, two piece of first demarcation strip 202a directly setting
202b, the second demarcation strip 202b divide contact support lock chamber 202 supports fixation to divide chamber 2021 for multiple contacts,
Contact supports 8 contact support seat 83 to support fixation to divide chamber 2021 to dock with the contact of pedestal 2, contact branch
Hold body 81 supports fixation to divide the size of chamber 2021 to match with contact, and contact support body 81 can stretch into contact branch
Fixation is held to divide in chamber 2021.When contact support body 81 moves up and down, mobile extreme higher position is not fallen out
Outside contact support seat 83, mobile extreme lower position does not fall out contact and supports fixation to divide outside chamber 2021.Such as Fig. 4
Shown breaker is three-phase breaker, and separating in the both sides of base 1 has three the first installation cavities 103, pedestal
2 both sides, which separate, three the second installation cavities 203, and middle part, which separates, has three contacts to support fixation to divide chamber 2021.
Three contact support bodies 81 in base 1 are connected with each other and can moved up and down together.
As shown in Figure 8,9, the contact supports that 8 include multiple contacts corresponding with each pole conducting system respectively
Supporter, each contact supporter include contact support seat 83, and contact support seat 83 is set to both sides extension respectively
There is extension board 82, be arranged in parallel two pieces of extension boards 82 per side, and two pieces of extension boards 82 per side stretch to together respectively
Install in each arc extinguishing grid pieces of side and with arc extinguishing grid pieces and fix.Specifically, the lateral wall of the extension board 82
Protrusion is provided with the retaining convex rib 821 coordinated with the installation of the madial wall of base phase partition 101 or base 1；Institute
It is L-shaped to state retaining convex rib 821, including the first convex tendon 8211 and vertical with the first convex tendon 8211 second convex
Muscle 8212, one end bottom of arc extinguishing grid pieces are held on the first convex tendon 8211, one end end of arc extinguishing grid pieces with
Second convex tendon 8212 offsets.Extension board 82 coordinates with base phase partition 101 and separates each pole conducting system
In different confined spaces, one end of extension board 82 is stretched to inside arc extinguishing grid pieces is rapidly introduced into arc extinguishing by electric arc
Arc extinguishing in room, improve arc extinguishing efficiency.
As shown in Fig. 5,7,8,9, the contact support seat 83 is provided with towards the end both sides of pedestal 2 to be used for
The crossbeam 836 that contact supports lock chamber 202 is closed, both ends protrusion is provided with mounting post 837；The contact is supported
It is fixed to divide the both ends of chamber 2021 to protrude to be provided with securing plate 231, securing plate 231 towards contact support seat 83 one
Side protrusion be provided with 837 corresponding two fixed columns 232 of mounting post, formed between two fixed columns 232 and peace
The mounting groove 233 that the installation of post 837 coordinates is filled, the mounting post 837 at the both ends of contact support seat 83 is loaded on mounting groove
After 233, crossbeam 836 and the contact of both sides support the first demarcation strip 202a of the both sides of lock chamber 202 is adjacent to match somebody with somebody
Close.The mounting post 837 of the end set of contact support seat 83 coordinates with the mounting groove 233 of pedestal, crossbeam 836
The slots close of base 1 and the central region of pedestal 2 is closed with the first demarcation strip 202a snug fits.
As shown in Figure 8,9, contact supports that 8 also include touch spring 9.The middle part of the contact support seat 83
Provided with the body installation cavity 831 for installing touch spring 9 and contact support body 81, contact support body
81 middle part is provided with the moving contact installation cavity 811 of installation moving contact, and the both sides of contact support seat 83 are respectively equipped with
The moving contact movable cavity 832 for allowing moving contact to move up and down, the bottom of contact support body 81 is provided with contact bullet
The spring that one end of spring 9 passes through stretches into chamber 812, and spring stretches into chamber 812 and set with the insertion of moving contact installation cavity 811
Put；During installation, first contact support body 81 is loaded in body installation cavity 831, moving contact sequentially passes through dynamic
Contact movable cavity 832 and moving contact installation cavity 811 are installed on contact support body 81, and both ends are stretched to tactile
The both sides of head support seat 83, one end of touch spring 9 stretch into chamber 812 through spring and stretch to moving contact installation
The boss 401 of lower surface of the internal sleeve of chamber 811 loaded on moving contact, the other end are set in body installation cavity 831
The boss 801 of bottom.Contact support body 81 drives moving contact to move up and down, and touch spring 9 is moving contact
Elastic force with static contact close contacting fit is provided.
As shown in fig. 7, the both ends side wall of the base 1 is provided with the electric arc gas outlet 112 for radiating, electric arc
Gas outlet 112 is the strip heat emission hole of multigroup cross direction profiles.High temperature hot gas after arc-chutes arc extinguishing
Discharged by electric arc gas outlet 112, reduce the internal temperature rise of product.
As shown in Figure 8,9, the side wall of the contact support seat 83 is provided with the fluting for being used for installing touch spring 9
833.Fluting 833 is that rectangle is slotted, and when assembling moving contact, stretches into compression spring from fluting 833, is easy to
The installation of moving contact.The buckle that the side wall of the contact support seat 83 is provided with contact supporter connection side by side is convex
Block 834；In Fig. 7, the lower left side of contact support seat 83 is provided with a buckle projection 834, buckle projection 834
Set location and quantity change can be made according to actual conditions, buckle projection 834 is used for multiple contact branch
Gripping member connects use side by side, on the one hand can on the other hand prevent limit with the installation site of positioning contact supporter
Position effect.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to
Assert that the specific implementation of the present invention is confined to these explanations.For the common skill of the technical field of the invention
For art personnel, without departing from the inventive concept of the premise, some simple deduction or replace can also be made,
Protection scope of the present invention should be all considered as belonging to.
Claims (10)
1. a kind of motor protection breaker, including base (1), the pedestal being installed on base (1)
(2) the arc extinguishing grid pieces group (3) and contact, being installed in base (1) support (8), are installed on contact
Support the moving contact group (4) on (8), it is characterised in that：The both sides of the base (1), which are provided with, to be used for
The first installation cavity (103) of arc extinguishing grid pieces group (3) is installed, the middle part of base (1), which is provided with, to be used to pacify
Filling contact supports the contact of (8) to support installation cavity (102)；Pedestal (2), static contact group (6), heat
Magnetic group (5), insulation board (7) and contact support (8) together by the first installation cavity (103) enclosed shape
Into the confined space of an arc extinguishing；
Wherein, one group of static contact of static contact group (6) and pyromagnetic group (5) are installed on base (1) side
The first installation cavity (103) top, another group of static contact and insulation board (7) are installed on base (1)
The top of the first installation cavity (103) of opposite side, two terminal contacts point of the moving contact of moving contact group (4)
Not stretching to contact supports the contact of two groups of static contacts of (8) both sides and both sides to be oppositely arranged.
2. motor protection breaker according to claim 1, it is characterised in that：The pedestal (2)
Both sides be respectively provided with installation static contact group (6) the second installation cavity (203), pedestal (2)
Middle part be provided with and be used for fixed contact and support that the contact of (8) supports lock chamber (202), one group of static contact and
Pyromagnetic group (5) are arranged in the second installation cavity (203) of side, another group of static contact and insulation board (7)
In the second installation cavity (203) of opposite side；Pedestal (2), which is arranged on base (1), makes the
Two installation cavities (203), contact support lock chamber (202) respectively with the first installation cavity (103) and
Contact supports installation cavity (102) docking.
3. motor protection breaker according to claim 1 or 2, it is characterised in that：One group quiet
Contact is installed on the lower section of pyromagnetic group (5), and first peace of base (1) side is installed on after being assembled together
Fill the top of cavity (103)；Described pyromagnetic group (5) include thermal element (51) and electromagnetic component (52),
Static contact is installed on the first installation cavity (103) of the fixed plate closed downwards side of thermal element (51),
Electromagnetic component (52) is installed on above the fixed plate of thermal element (51).
4. motor protection breaker according to claim 1 or 2, it is characterised in that：Another group
One end of static contact is connected with insulation board (7), and insulation board (7) is located at the side wall side of pedestal (2),
The top of first installation cavity (103) of base (1) opposite side is installed on after being assembled together；It is described quiet
Contact includes forming the first pleated sheet (61) and the second pleated sheet being parallel to each other by one piece of metal sheet
(62), the second pleated sheet (62) is located at the lower section of the first pleated sheet (61), the first pleated sheet (61) and
One end connection of second pleated sheet (62), the other end is spaced to form the first gap (601), insulation
It is fixedly connected in plate (7) insertion the first gap (601) with static contact.
5. motor protection breaker according to claim 1 or 2, it is characterised in that：It is described to touch
Head supports the contact that (8) include the first installation cavity of connection (103) and contact supports installation cavity (102)
Support seat (83), contact support body (81) are arranged in contact support seat (83) and can slided up and down
Moving contact group (4) action is driven, contact support body (81) stretches out contact support seat (83) outside.
6. motor protection breaker according to claim 2, it is characterised in that：The base (1)
Both sides are provided with the base phase partition (101) for being used for separating each pole conducting system, form multiple first installations
Cavity (103)；The both sides of pedestal (2) be provided be used to separating each pole conducting system with base phase partition
(101) corresponding pedestal phase partition (201), forms multiple second installation cavities (203)；It is described
It is vertical with pedestal phase partition (201) that the contact of pedestal (2) supports that the both sides of lock chamber (202) are provided with
Two piece of first demarcation strip (202a) set is vertical between two piece of first demarcation strip (202a) to be provided with second
Contact is supported lock chamber (202) to be divided into multiple touch by demarcation strip (202b), the second demarcation strip (202b)
Head, which is supported to fix, divides chamber (2021), and contact supports the contact support seat (83) and pedestal (2) of (8)
Contact, which is supported to fix, divides chamber (2021) to dock, and contact support body (81) supports fixation to divide chamber (2021) with contact
Size matches, and contact support body (81) can stretch into contact and support fixed divide in chamber (2021).
7. motor protection breaker according to claim 6, it is characterised in that：The contact branch
Holding (8) includes multiple contact supporters corresponding with each pole conducting system respectively, each contact supporter bag
Contact support seat (83) is included, contact support seat (83) is provided with extension board (82) to both sides extension respectively,
Be arranged in parallel two pieces of extension boards (82) per side, and two pieces of extension boards (82) per side stretch to the every of homonymy respectively
Install in individual arc extinguishing grid pieces and with arc extinguishing grid pieces and fix.
8. motor protection breaker according to claim 7, it is characterised in that：The contact branch
Hold seat (83) and be provided with towards the end both sides of pedestal (2) and be used to close contact support lock chamber (202)
Crossbeam (836), both ends protrusion are provided with mounting post (837)；The contact supports fixation to divide chamber (2021)
Both ends protrusion be provided with securing plate (231), side of the securing plate (231) towards contact support seat (83)
Protrusion is provided with two fixed columns (232) corresponding with mounting post (837), two fixed columns (232) it
Between formed with mounting post (837) installation coordinate mounting groove (233), contact support seat (83) both ends
After mounting post (837) is loaded on mounting groove (233), crossbeam (836) and the contact of both sides support lock chamber
(202) the first demarcation strip (202a) snug fit of both sides.
9. motor protection breaker according to claim 7, it is characterised in that：Also include contact
Spring (9), the middle part of the contact support seat (83), which is provided with, to be used to install touch spring (9) and contact
The body installation cavity (831) of support body (81), the middle part of contact support body (81) are provided with installation
The moving contact installation cavity (811) of moving contact, the both sides of contact support seat (83), which are respectively equipped with, allows dynamic touch
The moving contact movable cavity (832) that head moves up and down, contact support body (81) bottom, which is provided with, to be allowed to touch
The spring that one end of head spring (9) passes through stretches into chamber (812), and spring stretches into chamber (812) and moving contact
Installation cavity (811) insertion is set；After contact support body (81) loads body installation cavity (831), move
Contact sequentially passes through moving contact movable cavity (832) and moving contact installation cavity (811) and is installed on contact branch
Hold on body (81), the both sides of contact support seat (83), one end of touch spring (9) are stretched in both ends
Chamber (812), which is stretched into, through spring stretches to the internal lower surface phase with moving contact of moving contact installation cavity (811)
Support, the other end is set in the boss (801) of the bottom of body installation cavity (831).
10. motor protection breaker according to claim 7, it is characterised in that：The extension
The lateral wall protrusion of plate (82) is provided with pacifies with the madial wall of base phase partition (101) or base (1)
Assemble the retaining convex rib (821) closed；The retaining convex rib (821) is L-shaped, including the first convex tendon (8211)
Second convex tendon (8212) vertical with the first convex tendon (8211), one end bottom of arc extinguishing grid pieces are held on
On first convex tendon (8211), one end end and the second convex tendon (8212) of arc extinguishing grid pieces offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309057.9A CN107369573B (en) | 2016-05-11 | 2016-05-11 | Motor protection breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309057.9A CN107369573B (en) | 2016-05-11 | 2016-05-11 | Motor protection breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107369573A true CN107369573A (en) | 2017-11-21 |
| CN107369573B CN107369573B (en) | 2019-09-27 |
Family
ID=60303560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610309057.9A Active CN107369573B (en) | 2016-05-11 | 2016-05-11 | Motor protection breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107369573B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN109616345A (en) * | 2018-12-31 | 2019-04-12 | 雷顿电气科技有限公司 | The pedestal general assembly of electric switch |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107369573B (en) | 2019-09-27 |
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