CN107369573B - Motor protection breaker - Google Patents
Motor protection breaker Download PDFInfo
- Publication number
- CN107369573B CN107369573B CN201610309057.9A CN201610309057A CN107369573B CN 107369573 B CN107369573 B CN 107369573B CN 201610309057 A CN201610309057 A CN 201610309057A CN 107369573 B CN107369573 B CN 107369573B
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- China
- Prior art keywords
- contact
- pedestal
- group
- installation cavity
- sides
- Prior art date
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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
Abstract
A kind of motor protection breaker; including pedestal; the pedestal being mounted on the base; the arc extinguishing grid pieces group and contact being installed in pedestal are supported; it is installed on the moving contact group that contact is supported; the two sides of the pedestal are equipped with the first installation cavity for installing arc extinguishing grid pieces group, and the contact that the middle part of pedestal is equipped with for installing contact support supports installation cavity；First installation cavity is closed the confined space to form an arc extinguishing by pedestal, static contact group, pyromagnetic group, insulation board and contact support together；Wherein, one group of static contact of static contact group and pyromagnetic group are installed on the top of the first installation cavity of pedestal side, another group of static contact and insulation board are installed on the top of the first installation cavity of the pedestal other 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 two sides and two sides to be oppositely arranged.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, in particular to a kind of motor protection breaker.
Background technique
During the opening and closing of low-voltage electrical apparatus, especially when disjunction high current, switch electricity can be generated in air medium
Arc, it is the metal vapors by contact that when beginning, which lights electric arc, and then ambient air medium, which steps into arc gap, keeps metal phase electric
Arc is changed into the gaseous phase arc supported by gas ionization, and electric arc is the ionized gas of a high temperature and pressure, and arcing gas is consumingly
The material of contactant is destroyed, therefore, people use grid arc extinguishing in recent years, on the one hand as soon as possible seal arc transfer to rear end half
In the independent arc-chutes closed, the superposition of the proximal pole pressure drop of many short arcs is generated by grid to improve arc voltage, to inhibit
The growth of short circuit current；On the other hand cause pressure to rise in arc-chutes using high arc temperature, air-flow is formed by exhaust duct
Air-blowing effect and by grid to the compartmentation of electric arc, realize and quickly extinguish electric arc.Traditional motor protection circuit breaker
Arc-chutes are assemblied by pedestal and pedestal, since pedestal need to reserve static contact installation window and dynamic touching bridge driving window, therefore are gone out
Arc chamber rear end and arc stream open on top, that disjunction fault current generates, one is directed towards gas outlet, another stock backwards
Gas outlet, two strands of air-flows are escaped by above-mentioned two classes window, to make arc stream air pressure reduction, are influenced gas and are pushed away to electric arc
Dynamic speed.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of simple and compact for structure, performance safety stabilization is provided,
Motor protection breaker at low cost.
To achieve the above object, present invention employs following technical solutions:
A kind of motor protection breaker, including pedestal 1, the pedestal 2 being installed on pedestal 1, are installed in pedestal 1
Arc extinguishing grid pieces group 3 and contact support 8, and the two sides of the moving contact group 4 being installed in contact support 8, the pedestal 1 are equipped with for pacifying
The first installation cavity 103 of arc extinguishing grid pieces group 3 is filled, the middle part of pedestal 1 is equipped with supports 8 contact to support installation for installing contact
Chamber 102；Pedestal 2, static contact group 6, pyromagnetic group 5, insulation board 7 and contact support 8 the first installation cavity 103 is closed formation together
The confined space of one arc extinguishing；Wherein, one group of static contact of static contact group 6 and pyromagnetic group 5 are installed on the first peace of 1 side of pedestal
The top of cavity 103 is filled, another group of static contact and insulation board 7 are installed on the upper of the first installation cavity 103 of 1 other side of pedestal
Side, two terminal contacts of the moving contact of moving contact group 4 stretch to the contact phase that contact supports 8 two sides and two groups of static contacts of two sides respectively
To setting.
Further, the two sides of the pedestal 2 are respectively provided with the second installation cavity 203 of installation static contact group 6, pedestal
2 middle part is equipped with supports 8 contact that lock chamber 202, one group of static contact and pyromagnetic group 5 is supported to be mounted on side for fixed contact
The second installation cavity 203 in, another group of static contact and insulation board 7 are mounted in the second installation cavity 203 of the other side；Pedestal
2 be mounted on pedestal 1 make the second installation cavity 203, contact support lock chamber 202 respectively with the first installation cavity 103 and contact
Installation cavity 102 is supported to dock.
Further, one group of static contact is installed on pyromagnetic group 5 of lower section, and the of 1 side of pedestal is installed on after being assembled together
The top of one installation cavity 103；Described pyromagnetic group 5 includes thermal element 51 and electromagnetic component 52, and static contact is installed on thermal element 51
Fixed plate closed downwards side the first installation cavity 103, electromagnetic component 52 is installed on above the fixed plate of thermal element 51.
Further, one end of another group of static contact is connect with insulation board 7, and insulation board 7 is located at the side wall side of pedestal 2, dress
Top with the first installation cavity 103 for being installed on 1 other side of pedestal afterwards together；The static contact includes by one piece of metal plate
The first pleated sheet 61 and the second pleated sheet 62 for being formed and being parallel to each other are folded, the second pleated sheet 62 is located under the first pleated sheet 61
Side, the first pleated sheet 61 are connected with one end of the second pleated sheet 62, and the other end is spaced apart from each other to form the first gap 601, insulation board 7
It is inserted into the first gap 601 and is fixedly connected with static contact.
Further, it includes the contact that the first installation cavity 103 of connection and contact support installation cavity 102 that the contact, which supports 8,
Support seat 83, contact support body 81, which is arranged in contact support seat 83 and can slide up and down, drives moving contact group 4 to act, contact
Support body 81 stretches out outside contact support seat 83.
Further, 1 two sides of pedestal are equipped with the pedestal phase partition 101 for separating each pole conducting system, are formed more
A first installation cavity 103；The two sides of pedestal 2 are equipped with for separating the corresponding to pedestal phase partition 101 of each pole conducting system
Pedestal phase partition 201, form multiple second installation cavities 203；The contact of the pedestal 2 supports the two sides of lock chamber 202
Equipped with vertical between pedestal phase partition 201 vertically disposed two piece of first demarcation plate 202a, two piece of first demarcation plate 202a
Divide contact support lock chamber 202 equipped with the second demarcation plate 202b, the second demarcation plate 202b supports fixation to divide chamber for multiple contacts
2021, contact supports 8 contact support seat 83 to support fixation that chamber 2021 is divided to dock with the contact of pedestal 2, contact support body 81
Support fixation that 2021 size of chamber is divided to match with contact, contact support body 81 can protrude into contact and fixation is supported to divide in chamber 2021.
Further, it includes multiple contact supporters corresponding with each pole conducting system respectively, each touching that the contact, which supports 8,
Head supporter includes contact support seat 83, and contact support seat 83 extends to two sides respectively is equipped with extension board 82, and every side is arranged in parallel
Two pieces of extension boards 82, two pieces of extension boards 82 of every side stretch in ipsilateral each arc extinguishing grid pieces and solid with arc extinguishing grid pieces installation respectively
It is fixed.
Further, the contact support seat 83 is equipped with towards the end two sides of pedestal 2 and supports lock chamber for closing contact
202 crossbeam 836, both ends protrusion are equipped with mounting post 837；The contact supports the fixed both ends for dividing chamber 2021 protrude to be equipped with to reinforce
Plate 231, securing plate 231 are equipped with two fixed columns 232 corresponding with mounting post 837 towards the side of contact support seat 83 protrusion,
The mounting groove 233 with the installation cooperation of mounting post 837, the mounting post at 83 both ends of contact support seat are formed between two fixed columns 232
837 loaded on after mounting groove 233, and crossbeam 836 and the contact of two sides support the first demarcation plate 202a of 202 two sides of lock chamber is adjacent to match
It closes.
It further, further include touch spring 9, the middle part of the contact support seat 83 is equipped with for installing 9 He of touch spring
The ontology installation cavity 831 of contact support body 81, the middle part of contact support body 81 are equipped with the moving contact installation of installation moving contact
Chamber 811, the two 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, contact branch
It holds 81 bottom of ontology and protrudes into chamber 812 equipped with the spring for allowing one end of touch spring 9 to pass through, spring protrudes into chamber 812 and moving contact
The perforation setting of installation cavity 811；After contact support body 81 is packed into ontology installation cavity 831, moving contact sequentially passes through moving contact activity
Cavity 832 and moving contact installation cavity 811 are simultaneously installed on contact support body 81, and the two sides of contact support seat 83 are stretched at both ends,
One end of touch spring 9 passes through spring and protrudes into the lower surface phase that chamber 812 stretches to 811 inside and moving contact of moving contact installation cavity
It supports, the bottom of the other end and ontology installation cavity 831 offsets.
Further, the lateral wall protrusion of the extension board 82 is equipped with the inner sidewall with pedestal phase partition 101 or pedestal 1
The retaining convex rib 821 of cooperation is installed；The retaining convex rib 821 be L shape, including the first convex ribs 8211 and with the first convex ribs 8211 hang down
The second straight convex ribs 8212, one end lower part of arc extinguishing grid pieces are held on the first convex ribs 8211, one end end of arc extinguishing grid pieces with
Second convex ribs 8212 offset.
Motor protection of the present invention is supported using static contact group, pyromagnetic group, insulation board and contact together the bottom of by with breaker
First installation cavity of seat two sides closes confined space, prevents arcing gas from escaping, and contact is supported to contact dynamic/static contact and be generated
The region of electric arc is divided into two regions, and after generating electric arc, electric arc encounters contact in the side backwards to arc extinguishing grid pieces group and supports resistance
Superposition is generated after gear, increases arcing gas voltage, is pushed electric arc to accelerate move progress arc extinguishing heel row to arc extinguishing grid pieces group and is gone out product
Arc extinguishing speed is improved in outside, reduces the damage to interiors of products component.One group of static contact and pyromagnetic group are for closing the first installation
The side upper area of cavity.Another group of static contact and insulation board are used to close the other side upper area of the first installation cavity,
Prevent arcing gas from escaping from upper area.
Detailed description of the invention
Fig. 1 is the overall structure sectional view of motor protection breaker of the present invention；
Fig. 2 is the substructure sectional view 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 with pedestal connect sectional view；
Fig. 7 is the structural schematic diagram of pedestal of the present invention；
Fig. 8 is the perspective view that contact of the present invention is supported；
Fig. 9 is the sectional view that contact of the present invention is supported；
Figure 10 is the scheme of installation of static contact Yu pyromagnetic group；
Figure 11 is the exploded view of static contact Yu pyromagnetic group；
Figure 12 is the exploded view of static contact Yu pyromagnetic group；
Figure 13 is the perspective view of static contact；
Figure 14 is the perspective view of insulation board.
Specific embodiment
Below in conjunction with the embodiment that attached drawing 1 to 14 provides, motor protection breaker of the invention is further illustrated
Specific embodiment.Motor protection of the invention is not limited to the following description with breaker.
As shown in Figure 1, 2, motor protection breaker of the present invention, including pedestal 1 and pedestal 2, the pedestal 2 are installed on
On pedestal 1.Arc extinguishing grid pieces group 3 is installed, two groups of arc extinguishing grid pieces of arc extinguishing grid pieces group 3 are located at the two of pedestal 1 on pedestal 1
Side, the middle part of pedestal 1 are equipped with contact and support 8, and contact is supported to be equipped with moving contact group 4 on 8；Static contact is installed on pedestal 2
Group 6, two groups of static contacts of static contact group 6 are respectively arranged on the two sides of pedestal 2；It further include be installed on pedestal 2 pyromagnetic group 5 and absolutely
Listrium 7, wherein one group of static contact is equipped with pyromagnetic group 5, another group of static contact is equipped with insulation board 7.The moving contact group 4 is moved
Two terminal contacts of contact stretch to contact respectively supports 8 two sides and the contact of two groups of static contacts of 2 two sides of pedestal to be oppositely arranged, and touches
Head supports the contact of 8 drive moving contacts and static contact is contacting and separating to carry out open and close circuit.
As shown in figs. 1-7, the two sides of motor protection breaker of the present invention, the pedestal 1 are equipped with for installing arc extinguishing
First installation cavity 103 of grid group 3, the middle part of pedestal 1 is equipped with supports 8 contact to support installation cavity 102 for installing contact；
Static contact group 6, pyromagnetic group 5, insulation board 7 and contact support 8 the closing of the first installation cavity 103 is formed the close of an arc extinguishing together
Close space；Wherein, one group of static contact of static contact group 6 and pyromagnetic group 5 are installed on the first installation cavity 103 of 1 side of pedestal
Top, another group of static contact and insulation board 7 are installed on the top of the first installation cavity 103 of 1 other side of pedestal, moving contact group 4
Two terminal contacts of moving contact stretch to contact respectively the contact of two groups of static contacts of 8 two sides and two sides supported to be oppositely arranged.This hair
Bright motor protection is supported using static contact group, pyromagnetic group, insulation board and contact together by the first of pedestal two sides with breaker
Installation cavity closes confined space, prevents arcing gas from escaping, and contact is supported to contact dynamic/static contact into the region point for generating electric arc
Two regions are divided into, after generating electric arc, electric arc encounters after contact is supported to stop in the side backwards to arc extinguishing grid pieces group generates superposition,
Increase arcing gas voltage, pushes electric arc to accelerate move to arc extinguishing grid pieces group and carry out arc extinguishing heel row and go out outside product, raising arc extinguishing
Speed reduces the damage to interiors of products component.
As Figure 4-Figure 6, specifically, the two sides of the pedestal 2 are respectively provided with the second installation of installation static contact group 6
Cavity 203, the middle part of pedestal 2 is equipped with supports 8 contact to support lock chamber 202 for fixed contact, one group of static contact and pyromagnetic
Group 5 is mounted in the second installation cavity 203 of side, and another group of static contact and insulation board 7 are mounted on the second of the other side and install
In cavity 203；Pedestal 2, which is mounted on pedestal 1, makes the second installation cavity 203, contact that lock chamber 202 be supported to install respectively with first
Cavity 103 and contact support installation cavity 102 to dock.
As shown in figs. 1-7, static contact group 6, pyromagnetic group 5, the first installation cavity of two sides 103 of 7 closed base 1 of insulation board
Upper area.One group of static contact is installed on pyromagnetic group 5 of lower section, and the first installation of 1 side of pedestal is installed on after being assembled together
The top of cavity 103, for closing the side upper area of the first installation cavity 103；Pyromagnetic group 5 is motor protection open circuit
Error protection element in device generally includes the thermal element for overload protection and the electromagnetic component for short-circuit protection, heat member
Part generallys use bimetal leaf, and the present invention is by pyromagnetic group 5 one upper side of closed base together with static contact, without increasing additionally
Element, it is compact-sized easy to assembly.Described pyromagnetic group 5 includes thermal element 51 and electromagnetic component 52, and static contact is installed on thermal element
Below 51 fixed plate, electromagnetic component 52 is installed on above the fixed plate of thermal element 51；Fixed plate one end is equipped with hangs down with fixed plate
Straight bimetal leaf, one end of static contact is extended vertically upwards to be snapped connection with thermal element 51, the fixed plate and stationary contact of thermal element
The cavity of the common closing side of head.One end of static contact extends vertically upwards the T-type for being equipped with and snapping connection with thermal element 51 and buckles
Arm 611, one end side wall of thermal element 51 are equipped with the T-type buckle slot 511 being clasped with T-type buckle arm 611；T-type buckles arm 611
One end including static contact extends vertically upwards the first buckle arm 611a of setting, and one end side wall of thermal element 51 is equipped with and first
The first buckle slot 511a of arm 611a installation cooperation is buckled, the end of the first buckle arm 611a extends to two sides to be equipped with and the first card
The end of the second buckle arm 611a vertical buckle arm 611b, the first buckle slot 511a extends to two sides to be equipped with and the first buckle slot
The second 511a vertical buckle slot 511b, the side wall of the second buckle arm 611b and the second buckle slot 511b are clasped (referring to figure
10-14).One end of another group of static contact is connect with insulation board 7, and insulation board 7 is located at the side wall side of pedestal 2, is assembled together
It is installed on the top of the first installation cavity 103 of 1 other side of pedestal afterwards, for closing the other side of the first installation cavity 103
Square region, as shown in figures 10-13, the static contact include that the first pleated sheet 61 being parallel to each other is formed by one piece of metal sheet
With the second pleated 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 the second pleated sheet 62
One end connection, the other end is spaced apart from each other to form the first gap 601, fixes in first gap of the insertion of insulation board 7 601 with static contact
Connection.One end of insulation board 7, which is equipped with, can be inserted into the first connecting portion 71 connecting in the first gap 601 with static contact, the first connection
The surface protrusion in portion 71 is equipped with the reinforcement convex ribs 711 with 601 snap-fit of the first gap, and the surface protrusion of insulation board 7 is equipped with limit
The limit plate 72 (0-14 referring to Fig.1) of position 7 installation site of insulation board reinforces convex ribs 711 in figure and is set to the upper of first connecting portion 71
Surface, naturally it is also possible to be set to lower surface, limit plate 72 is the cross spacing plate set on the protrusion setting of 7 upper surface of insulation board in figure
With the longitudinal spacing plate for the lower surface protrusion setting for being set to insulation board 7, the other end of insulation board 7 is equipped with pacifies with the side wall of pedestal 2
Assemble the mounting structure closed.
As Figure 7-9, it is formed between the first installation cavity 103 of 1 two sides of pedestal and accommodates the contact branch that contact supports 8
Installation cavity 102 is held, it includes that the first installation cavity 103 of connection and contact support the contact of installation cavity 102 to support that the contact, which supports 8,
Seat 83, contact support body 81, which is arranged in contact support seat 83 and can slide up and down, drives moving contact group 4 to act, and contact is supported
Ontology 81 stretches out outside contact support seat 83.Contact is supported to install by the first installation cavity 103 that contact support seat 83 connects two sides
102 side-closed of chamber, contact support body 81 slide in contact support seat 83, and closing contact supports 102 top of installation cavity
Region.The part that contact support body 81 stretches out outside contact support seat 83 can protrude into the contact in the middle part of pedestal and support lock chamber 202.
As shown in Fig. 3,4,7, contact support body 81 and contact support it is fixed divide 2021 mutual cooperation closed base 1 of chamber and
The central region of pedestal 2.1 two sides of pedestal are equipped with the pedestal phase partition 101 for separating each pole conducting system, are formed more
A first installation cavity 103；The two sides of pedestal 2 are equipped with for separating the corresponding to pedestal phase partition 101 of each pole conducting system
Pedestal phase partition 201, form multiple second installation cavities 203；The contact of the pedestal 2 supports the two sides of lock chamber 202
Equipped with vertical between pedestal phase partition 201 vertically disposed two piece of first demarcation plate 202a, two piece of first demarcation plate 202a
Divide contact support lock chamber 202 equipped with the second demarcation plate 202b, the second demarcation plate 202b supports fixation to divide chamber for multiple contacts
2021, contact supports 8 contact support seat 83 to support fixation that chamber 2021 is divided to dock with the contact of pedestal 2, contact support body 81
Support fixation that 2021 size of chamber is divided to match with contact, contact support body 81 can protrude into contact and fixation is supported to divide in chamber 2021.Touching
When head support body 81 moves up and down, mobile extreme higher position is not fallen out outside contact support seat 83, and mobile extreme lower position is not
Contact, which can be deviate from, supports fixation to divide outside chamber 2021.Breaker as shown in Figure 4 is three-phase breaker, and separating in 1 two sides of pedestal has
Three the first installation cavities 103,2 two sides of pedestal separate there are three the second installation cavity 203, and there are three contact supports for middle part separation
Fixation divides chamber 2021.Three contact support bodies 81 interconnection in pedestal 1 can move up and down together.
As shown in Figure 8,9, it includes multiple contact supporters corresponding with each pole conducting system respectively that the contact, which supports 8,
Each contact supporter includes contact support seat 83, and contact support seat 83 extends to two sides respectively is equipped with extension board 82, and every side is flat
Row two pieces of extension boards 82 of setting, two pieces of extension boards 82 of every side are stretched in ipsilateral each arc extinguishing grid pieces respectively and and arc extinguishing grid pieces
Installation is fixed.Specifically, the lateral wall protrusion of the extension board 82 is equipped with the inside with pedestal phase partition 101 or pedestal 1
The retaining convex rib 821 of wall installation cooperation；The retaining convex rib 821 be L shape, including the first convex ribs 8211 and with the first convex ribs 8211
The second vertical convex ribs 8212, one end lower part of arc extinguishing grid pieces are held on the first convex ribs 8211, one end end of arc extinguishing grid pieces
It offsets with the second convex ribs 8212.Extension board 82 and pedestal phase partition 101, which cooperate, separates each pole conducting system different close
It closes in space, one end of extension board 82, which is stretched to inside arc extinguishing grid pieces, is rapidly introduced into arc extinguishing in arc-chutes for electric arc, improves arc extinguishing effect
Rate.
As shown in Fig. 5,7,8,9, the contact support seat 83 is equipped with towards the end two sides of pedestal 2 for closing contact branch
The crossbeam 836 of lock chamber 202 is held, both ends protrusion is equipped with mounting post 837；The contact supports fixation that the both ends of chamber 2021 is divided to protrude
Equipped with securing plate 231, securing plate 231 is equipped with two corresponding with mounting post 837 admittedly towards the side of contact support seat 83 protrusion
Fixed column 232 forms the mounting groove 233 with the installation cooperation of mounting post 837,83 both ends of contact support seat between two fixed columns 232
Mounting post 837 loaded on after mounting groove 233, the crossbeam 836 and contact of two sides support the first demarcation plate of 202 two sides of lock chamber
202a is closely fitted.Contact support seat 83 end setting mounting post 837 and pedestal mounting groove 233 cooperate, crossbeam 836 with
First demarcation plate 202a, which is closely fitted, closes the slots close of the central region of pedestal 1 and pedestal 2.
As shown in Figure 8,9, contact supports that 8 further include touch spring 9.The middle part of the contact support seat 83 is equipped with for pacifying
The ontology installation cavity 831 of touch spring 9 and contact support body 81 is filled, the middle part of contact support body 81 is equipped with installation moving contact
Moving contact installation cavity 811, it is empty that the two sides of contact support seat 83 are respectively equipped with the moving contact activity for allowing moving contact to move up and down
Chamber 832, the spring that one end that 81 bottom of contact support body is equipped with touch spring 9 passes through protrude into chamber 812, and spring protrudes into chamber 812
It penetrates through and is arranged with moving contact installation cavity 811；When installation, first contact support body 81 is packed into ontology installation cavity 831, moving contact
It sequentially passes through moving contact movable cavity 832 and moving contact installation cavity 811 is installed on contact support body 81, contact is stretched at both ends
The two sides of support seat 83, one end of touch spring 9, which passes through spring, to be protruded into chamber 812 and stretches to inside moving contact installation cavity 811 and be set with
Boss 401 in the lower surface of moving contact, the other end are set in the boss 801 of the bottom of ontology installation cavity 831.Contact supports this
Body 81 drives moving contact to move up and down, and touch spring 9 provides the elastic force with static contact close contacting fit for moving contact.
As shown in fig. 7, the both ends side wall of the pedestal 1 is equipped with the electric arc gas outlet 112 for heat dissipation, electric arc gas outlet
112 be the strip heat release hole of multiple groups cross direction profiles.High temperature hot gas after arc-chutes arc extinguishing passes through electric arc gas outlet 112
Discharge, reduces the internal temperature rise of product.
As shown in Figure 8,9, the side wall of the contact support seat 83 is equipped with the fluting 833 for installing touch spring 9.Fluting
833 slot for rectangle, when assembling moving contact, compressed spring are protruded into from fluting 833, convenient for the installation of moving contact.The contact
The side wall of support seat 83 is equipped with the buckle convex block 834 of contact supporter connection side by side；In Fig. 7, the lower-left of contact support seat 83
Side is equipped with a buckle convex block 834, and the setting position and quantity for buckling convex block 834 can make change according to the actual situation, blocks
Button convex block 834 connects use for multiple contact supporters side by side, on the one hand can be another with the installation site of positioning contact supporter
Aspect has prevented position-limiting action.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of motor protection breaker, including pedestal (1), the pedestal (2) being installed on pedestal (1), are installed on pedestal
(1) arc extinguishing grid pieces group (3) and contact in support (8), and the moving contact group (4) being installed in contact support (8), feature exists
The first installation cavity (103) for installing arc extinguishing grid pieces group (3) is equipped in: two sides of the pedestal (1), in pedestal (1)
Portion is equipped with supports the contact of (8) to support installation cavity (102) for installing contact；Pedestal (2), static contact group (6), pyromagnetic group (5),
Insulation board (7) and contact support (8) that the first installation cavity (103) are closed to the confined space for forming an arc extinguishing together；
Wherein, one group of static contact of static contact group (6) and pyromagnetic group (5) are installed on the first installation cavity of pedestal (1) side
(103) top, another group of static contact and insulation board (7) are installed on the upper of first installation cavity (103) of pedestal (1) other side
Side, two terminal contacts of the moving contact of moving contact group (4) stretch to the touching that contact supports two groups of static contacts of (8) two sides and two sides respectively
Point is oppositely arranged.
2. motor protection breaker according to claim 1, it is characterised in that: distinguish the two sides of the pedestal (2)
Equipped with the second installation cavity (203) for installing static contact group (6), the middle part of pedestal (2) is equipped with to be supported for fixed contact
(8) contact supports lock chamber (202), and one group of static contact and pyromagnetic group (5) are mounted on the second installation cavity (203) of side
Interior, another group of static contact and insulation board (7) are mounted in the second installation cavity (203) of the other side；Pedestal (2) is mounted on pedestal
(1) make the second installation cavity (203), contact that lock chamber (202) be supported to support respectively with the first installation cavity (103) and contact on
Installation cavity (102) docking.
3. motor protection breaker according to claim 1 or 2, it is characterised in that: one group of static contact is installed on heat
The lower section of magnetic group (5) is installed on the top of first installation cavity (103) of pedestal (1) side after being assembled together；It is described pyromagnetic
Group (5) includes thermal element (51) and electromagnetic component (52), and static contact is installed on the fixed plate closed downwards side of thermal element (51)
The first installation cavity (103), 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: one end of another group of static contact
It is connect with insulation board (7), insulation board (7) is located at the side wall side of pedestal (2), and it is another that pedestal (1) is installed on after being assembled together
The top of the first installation cavity (103) of side；The static contact includes forming be parallel to each other first by one piece of metal sheet
Pleated sheet (61) and the second 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) it is connected with one end of the second pleated sheet (62), the other end is spaced apart from each other to be formed the first gap (601), insulation board (7) insertion
It is fixedly connected in first gap (601) with static contact.
5. motor protection breaker according to claim 1 or 2, it is characterised in that: the contact supports that (8) include
It connects the first installation cavity (103) and contact supports the contact support seat (83) of installation cavity (102), contact support body (81) is set
Setting in contact support seat (83) and can sliding up and down drives moving contact group (4) to act, and contact support body (81) stretches out contact
Support seat (83) is outside.
6. motor protection breaker according to claim 2, it is characterised in that: pedestal (1) two sides, which are equipped with, to be used
In the pedestal phase partition (101) for separating each pole conducting system, multiple first installation cavities (103) are formed；The two sides of pedestal (2)
Equipped with the pedestal phase partition (201) corresponding with pedestal phase partition (101) for separating each pole conducting system, formed multiple
Second installation cavity (203)；The contact of the pedestal (2) supports the two sides of lock chamber (202) to be equipped with and pedestal phase partition
(201) vertically disposed two piece of first demarcation plate (202a) is vertically equipped with second between two piece of first demarcation plate (202a) and separates
Contact support lock chamber (202) is divided into multiple contacts and fixation is supported to divide chamber (2021) by plate (202b), the second demarcation plate (202b),
Contact supports the contact support seat (83) of (8) to support fixation that chamber (2021) is divided to dock with the contact of pedestal (2), contact support body
(81) support fixation that chamber (2021) size is divided to match with contact, contact support body (81) can protrude into contact and fixation is supported to divide chamber
(2021) in.
7. motor protection breaker according to claim 6, it is characterised in that: the contact supports that (8) include more
A contact supporter corresponding with each pole conducting system respectively, each contact supporter includes contact support seat (83), contact branch
It holds seat (83) to extend to two sides equipped with extension board (82) respectively, two pieces of extension boards (82) are arranged in parallel in every side, and two pieces of every side prolong
Plate (82) is stretched to stretch to respectively in ipsilateral each arc extinguishing grid pieces and fixation is installed with arc extinguishing grid pieces.
8. motor protection breaker according to claim 7, it is characterised in that: contact support seat (83) direction
The end two sides of pedestal (2) are equipped with the crossbeam (836) that lock chamber (202) are supported for closing contact, and both ends protrusion is equipped with installation
Column (837)；The contact supports the fixed both ends for dividing chamber (2021) are protruded to be equipped with securing plate (231), securing plate (231) direction touching
The side protrusion of head support seat (83) is equipped with two fixed columns (232) corresponding with mounting post (837), two fixed columns (232)
Between formed with mounting post (837) installation cooperation mounting groove (233), contact support seat (83) both ends mounting post (837) dress
After mounting groove (233), the crossbeam (836) and contact of two sides support first demarcation plate (202a) of lock chamber (202) two sides to paste
Tight fit.
9. motor protection breaker according to claim 7, it is characterised in that: it further include touch spring (9), it is described
The middle part of contact support seat (83) is equipped with the ontology installation cavity for installing touch spring (9) and contact support body (81)
(831), the middle part of contact support body (81) is equipped with the moving contact installation cavity (811) of installation moving contact, contact support seat (83)
Two sides be respectively equipped with and allow the moving contact movable cavity (832) that moves up and down of moving contact, contact support body (81) bottom is set
The spring for having one end of permission touch spring (9) to pass through protrudes into chamber (812), and spring protrudes into chamber (812) and moving contact installation cavity
(811) perforation setting；After contact support body (81) is packed into ontology installation cavity (831), moving contact sequentially passes through moving contact activity
Cavity (832) and moving contact installation cavity (811) are simultaneously installed on contact support body (81), and contact support seat (83) are stretched at both ends
Two sides, one end of touch spring (9) passes through spring and protrudes into chamber (812) to stretch to moving contact installation cavity (811) internal with dynamic touching
The lower surface of head offsets, and the other end is set in the boss (801) of the bottom of ontology installation cavity (831).
10. motor protection breaker according to claim 7, it is characterised in that: the outside of the extension board (82)
Wall protrusion is equipped with the retaining convex rib (821) with the installation cooperation of the inner sidewall of pedestal phase partition (101) or pedestal (1)；It is described
Retaining convex rib (821) is L shape, including the first convex ribs (8211) and second convex ribs (8212) vertical with the first convex ribs (8211),
One end lower part of arc extinguishing grid pieces is held on the first convex ribs (8211), one end end and the second convex ribs (8212) phase of arc extinguishing grid pieces
It supports.
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 CN107369573A (en) | 2017-11-21 |
| CN107369573B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN107369573A (en) | 2017-11-21 |
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