CN209561318U - A kind of frame circuit breaker with heat sinking function - Google Patents
A kind of frame circuit breaker with heat sinking function Download PDFInfo
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- CN209561318U CN209561318U CN201920427153.2U CN201920427153U CN209561318U CN 209561318 U CN209561318 U CN 209561318U CN 201920427153 U CN201920427153 U CN 201920427153U CN 209561318 U CN209561318 U CN 209561318U
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- insulating body
- air inlet
- circuit breaker
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Abstract
The utility model discloses a kind of frame circuit breakers with heat sinking function, including insulating body, and the movable contact system, the stationary contact head unit that are set in the insulating body；Insulating body is equipped with air inlet and air outlet, and movable contact system includes the moving-contact unit that contact supports and be arranged in the contact to support, contact is supported to be rotationally connected on a bracket of insulating body setting；In "on" position, the air inlet and air outlet are in open state, and when separating brake, before moving-contact unit is separated with stationary contact head unit, the air inlet and air outlet are in closed state.The utility model can not only be in "on" position, increase insulating body inner cavity and extraneous convection current using the air inlet and outlet to radiate, air inlet and air outlet can also be closed before electric arc generation, to avoid electric arc from spraying from air inlet or air outlet and influence properties of product.
Description
Technical field
The utility model relates to a kind of breakers, more particularly to a kind of frame circuit breaker with heat sinking function.
Background technique
The dynamic/static contact system of frame circuit breaker is arranged in the insulating body of breaker, in breaker closing, electric current
Dynamic/static contact system is flowed through, since there are bigger contact resistance and entire inner conductive circuit systems between dynamic/static contact
The resistance of itself, so that heating effect of current (fever) can be generated at work.The insulating body of traditional frame circuit breaker uses
Enclosed construction is also brought simultaneously although can prevent in short circuit breaking outside arc spraying to body exterior and frame
Following problem: in normal work, due to the presence of heating effect of current, it is Celsius that dynamic/static contact contact site temperature reaches 120
Degree left and right, also, in closed structure space, contact system can only carry out heat transfer by conductor itself, lead to heat dissipation side
Formula is single, the heat of generation cannot be effectively reduced, cause the temperature rise at wiring position excessively high.For this purpose, there is one kind in the prior art
Ventilation opening is arranged in novel breaker on insulating body, increases insulating body inner cavity and extraneous convection current by heat dissipation.However,
Since the ventilation opening on the insulating body of this frame circuit breaker is always maintained at open state, so that in breaker open operation or failure
When disjunction, the electric arc that contact system generates is easy to eject from ventilation opening, to influence properties of product.
Utility model content
The utility model provides a kind of frame circuit breaker with heat sinking function, and which overcome the prior arts with ventilation opening
Shortcoming present in breaker.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of frame open circuit with heat sinking function
Device, including insulating body, and the movable contact system, the stationary contact head unit that are set in the insulating body；Insulating body be equipped with into
Air port and air outlet, movable contact system include the moving-contact unit that contact supports and be arranged in the contact to support, contact is supported
It is rotationally connected on a bracket of insulating body setting；In "on" position, the air inlet and air outlet are in open state, separating brake
When, before moving-contact unit is separated with stationary contact head unit, the air inlet and air outlet are in closed state.
Further, the air outlet is set at the top of the insulating body, and supports be arranged one by the contact
Control structure control opening and closing, the air inlet is set to the insulating body bottom, and is opened and closed by a baffle controls, and the baffle is living
It is dynamic to be set in the insulating body, and be combined with linkage mechanism with contact support, with contact collaborative support.
Further, the flapper is connected to the other components separately set in the bracket or the insulating body, and
The rotation direction of the baffle is consistent with the rotation direction that the contact is supported；The linkage mechanism is kinematic pair, the baffle
Elastic component is connected between contact support.
Further, the kinematic pair includes the first component being arranged on the contact is supported and is arranged on the baffle
Second component, first component are engaged with second component and can relatively rotate.
Further, the transmission ratio of the first component and second component is less than 1, and/or, the first component and second
Component is cam.
Further, the barrier slides are set in the insulating body, and the linkage mechanism is kinematic pair, the gear
Elastic component is connected between the other components separately set in plate and the bracket or the insulating body.
Further, the kinematic pair includes that contact, the contact support the first component that is arranged and the baffle
The second component of upper setting, contact are rotationally connected in the insulating body, and the pivot center of contact and the contact
The pivot center of support is parallel；First component is engaged with contact respectively with second component.
Further, the lever ratio of the first component and second component on contact is less than 1, and/or, described first
Component and second component are cam.
Further, the control structure is the air duct that is arranged on the contact is supported, described in the inlet communication in the air duct
Support that rotation is opposite with the air outlet or is staggered with the contact in the outlet of insulating body inner cavity, the air duct.
Further, the insulating body includes left and right two insulating bases being oppositely arranged together, the static contact list
Member is disposed therein an insulating base, bracket compression molding together with this wherein an insulating base；The air inlet, outlet air
Mouth setting is in another insulating base, and air inlet is located at another insulating base bottom end, and air outlet is located at the top of another insulating base.
Compared to the prior art, the utility model has the following beneficial effects:
1, since in "on" position, the air inlet and air outlet are in open state, when separating brake, moving-contact unit with it is quiet
Contact unit separation before, the air inlet and air outlet are in closed state so that the utility model can not only in "on" position,
Increase insulating body inner cavity and extraneous convection current using the air inlet and outlet to radiate, additionally it is possible to will before electric arc generation
Air inlet and air outlet are closed, to avoid electric arc from spraying from air inlet or air outlet and influence properties of product.
2, the air outlet is set at the top of the insulating body, and the control structure by being arranged in contact support
Control opening and closing, the air inlet is set to the insulating body bottom, and is opened and closed by a baffle controls, which is movably set in
In the insulating body, and with the contact support be combined with linkage mechanism, with contact collaborative support so that the utility model
Can use contact supports the rotation in divide-shut brake to provide the power of air inlet and air outlet automatic open close (without artificial control
Or the control mechanism of additional setting complexity), and ensure that the opening and closing opportunity of air inlet and air outlet is accurate.
3, the baffle is preferably set to rotation or sliding type, the linkage mechanism preferred movement pair, have structure it is simple,
The features such as being easily achieved.
4, the control structure selects the contact that the air duct being arranged is supported to realize, additionally it is possible to using air duct to air-flow
It is guided, to reinforce heat dissipation effect.
5, bracket compression molding together with a wherein insulating base, the air inlet are set to another insulating base bottom
End can be avoided because the locking of bracket screw is on another insulating base, another insulating base bottom end caused not have redundant space
The case where air inlet is set.The setting position of the air inlet and air outlet can utilize cold airflow in lower thermal current upper (empty
Gas convection current) principle accelerate heat dissipation.
The utility model is described in further detail with reference to the accompanying drawings and embodiments；But a kind of band of the utility model
The frame circuit breaker of heat sinking function is not limited to the embodiment.
Detailed description of the invention
Fig. 1 is cross-sectional view of one the utility model of embodiment in "on" position；
Fig. 2 be the contact support of one the utility model of embodiment, bracket, baffle, tension spring decomposing state structural representation
Figure；
Fig. 3 be the contact support of one the utility model of embodiment, bracket, baffle, tension spring assembled state structural representation
Figure；
Fig. 4 is the structural schematic diagram (broken section) of the insulating body of one the utility model of embodiment；
Fig. 5 is that one the utility model of embodiment in the air-flow of "on" position moves towards schematic diagram；
Fig. 6 is cross-sectional view of one the utility model of embodiment in rigid isloation state；
Fig. 7 is cross-sectional view of one the utility model of embodiment in gate-dividing state；
Fig. 8 is structural representation of the components such as the contact support of two the utility model of embodiment, bracket, baffle in decomposing state
Figure；
Fig. 9 is structural representation of the components such as the contact support of two the utility model of embodiment, bracket, baffle in assembled state
Figure；
Figure 10 is that two the utility model of embodiment in the air-flow of "on" position moves towards schematic diagram；
Figure 11 is cross-sectional view of two the utility model of embodiment in gate-dividing state.
Specific embodiment
Embodiment one
Referring to Figure 1 shown in-Fig. 7, a kind of frame circuit breaker with heat sinking function of the utility model, including insulating body
1, and it is set to the movable contact system of the insulating body 1, stationary contact head unit 5, arc-chutes 6, operating mechanism 7；Insulating body 1 is set
There are air inlet 11 and air outlet 12, movable contact system includes the moving-contact unit that contact is supported 2 and is arranged in contact support 2
3, contact supports 2 to be rotationally connected on a bracket 13 of the setting of insulating body 1.The moving-contact unit 3 is specifically rotationally connected with
Contact is supported on 2, and is connected with elastic component therebetween, the preferred tension spring 4 of the elastic component.In "on" position, the air inlet 11
It is in open state with air outlet 12, when separating brake, before moving-contact unit 3 is separated with stationary contact head unit 5, the air inlet 11 and go out
Air port 12 is in closed state.
In the present embodiment, one in the air inlet 11 and air outlet 12 is supported the control being arranged on 2 by the contact
Structure control opens and closes, another in the air inlet 11 and air outlet 12 controls opening and closing by baffle 8, the 8 activity setting of baffle
Support that 2 are combined with linkage mechanism in the insulating body 1, and with the contact, to support 2 linkages with contact.Specifically, described
Air outlet 12 is set to 1 top of insulating body, and is controlled and opened and closed by the control structure, and the air inlet 11 is set to institute
1 bottom of insulating body is stated, and is controlled and is opened and closed by the baffle 8.
In the present embodiment, the baffle 8 is rotationally connected with the bracket 13, and (except this, the baffle 8 can also be rotatablely connected
The other components separately set in the insulating body 1), the rotation direction of the rotation direction of the baffle 8 and contact support 2
Unanimously.The linkage mechanism is kinematic pair, and the baffle 8 and the contact are supported to be connected with elastic component between 2, makes the movement
Secondary element (element refers to the face being in contact in kinematic pair and face or point and face etc.) is held in contact condition.The elastic component
Specially tension spring 9, but not limited to this.9 both ends of tension spring are mounted on the baffle 8 respectively and the contact supports 2.
In the present embodiment, the kinematic pair specifically includes the contact and supports the first component 21 being arranged on 2 and the gear
The second component 81 being arranged on plate 8, first component 21 are engaged with second component 81 and can relatively rotate.The first component
21 and second component 81 be cam, so that the kinematic pair is constituted cam kinematic pair.The first component 21 and second component 81
Transmission ratio less than 1, specifically, the transmission ratio of the first component 21 and second component 81 is 1/10, and contact is made to support 2 rotations
When, 8 quick rotation of baffle can be driven, so that baffle 8 can in time will before moving-contact unit 3 is separated with stationary contact head unit 5
Air inlet 11 is closed.
In the present embodiment, (i.e. baffle 8 is towards the bracket 13 as shown in Fig. 2, 8 right end of baffle for 8 structure of baffle
One end) two fulcrums 82 are provided with, two fulcrum 82 is coaxial, and abuts against the arc groove 131 being accordingly arranged on the bracket 13
In, realize that baffle 8 and bracket 13 are rotatablely connected with this.Two fulcrums 22 are equally set in the contact support 2, two fulcrum 22 is total
Axis, and abutted against in two arc hanging grooves 132 being accordingly arranged on the bracket 13 respectively, realize that contact supports 2 and bracket with this
13 rotation connections.Hanging hole 83, the contact is arranged in 8 left end of baffle (i.e. baffle 8 is backwards to one end of the bracket 13) top
It supports to be provided with hanging scroll 24 on 2, the both ends of the tension spring 9 are mounted on the hanging hole 83 and hanging scroll 24, and the quantity of tension spring 9 respectively
It is preferred that two, the quantity of hanging hole 83 and hanging scroll 24 is also two.The front and rear sides of 8 left end of baffle are respectively equipped with an institute
Second component 81 is stated, the contact is supported to be correspondingly arranged two first components 21 on 2, and two first components 21 are oppositely arranged,
And it is engaged one by one with two second components 81.The side side of the baffle 8 back to the bracket 13 is set as the cambered surface 84 of evagination, with
The insulating body 1 is adapted in air inlet 11 back to the inner concave arc surface 14 that the side of the bracket 13 is arranged, and makes the movement of baffle 8 more
Steadily.
In the present embodiment, the control structure is that the contact supports the air duct 23 being arranged on 2.The import in the air duct 23 connects
Lead to 1 inner cavity of insulating body, 2 rotations and the 12 phase right or wrong of air outlet are supported with the contact in the outlet in the air duct 23
It opens.Since contact is supported to be connected with elastic component (i.e. tension spring 4) between 2 and moving-contact unit 3, so that contact support 2 is along separating brake side
To after turning an angle, moving-contact unit 3 is just initially separated with stationary contact head unit 5.Thus, in moving-contact unit 3 and stationary contact
Before head unit 5 separates, the contact supports that 2 can make first be staggered with the air outlet 12 in air duct 23 thereon will by rotating
Air outlet 12 is closed.
In the present embodiment, the insulating body 1 includes left and right two insulating bases 15,16 being oppositely arranged together, described
Stationary contact head unit 5 is disposed therein an insulating base 16, the bracket 13 and a wherein insulating base 16 compression molding together
(components raw material are thermosetting plastics, are formed using compression-molding process)；The air inlet 11, the setting of air outlet 12 are another exhausted
Edge pedestal 15, and air inlet 11 is located at another 15 bottom end of insulating base, air outlet 12 is located at another 15 top of insulating base.
A kind of frame circuit breaker with heat sinking function of the utility model, when combined floodgate, contact supports that 2 are transported by the cam
Dynamic subband moves baffle 8 and rotates clockwise, and air inlet 11 is opened, meanwhile, as contact supports 2 rotations, contact supports the wind on 2
The outlet in road 23 is gradually opposite with the air outlet 12, opens air outlet 12, as shown in Figure 5.At this point, cold air can be the bottom of from
Moving-contact unit 3 and the contact area of stationary contact head unit 5 inside the entrance insulating body 1 of portion's air inlet 11 is for convection heat dissipation,
And it is finally discharged from the air outlet 12 and arc-chutes 6.When separating brake, contact supports that 2 rotate counterclockwise, and passes through cam kinematic pair
It drives baffle 8 quickly to rotate counterclockwise, makes baffle 8 before moving-contact unit 3 is separated with stationary contact head unit 5 i.e. 11 pass of air inlet
It closes, meanwhile, contact supports the outlet in the air duct 23 on 2 to be staggered with air outlet 12, closes air outlet 12, as shown in fig. 6, in this way
It avoids when electric arc is generated since air inlet 11, air outlet 12 are not turned off the performance for causing electric arc to overflow and influencing breaker.When
After contact support 2 rotate in place along separating brake direction, baffle 8 remains turned-off the state of air inlet 11, and the outlet in the air duct 23 is still
It is staggered with air outlet 12, the import and 12 connection of air outlet in the air duct 23, but air outlet 12 is kept off at the top of moving-contact unit 3
Firmly, therefore, air outlet 12 is still in closed state, i.e. air outlet 12 is not connected to 1 inner cavity of insulating body, as shown in Figure 7.
Embodiment two
It refers to shown in Fig. 8-Figure 11, a kind of frame circuit breaker with heat sinking function of the utility model, with above-mentioned reality
The difference for applying example one is: the baffle 8 is slideably positioned in the sliding slot of 1 bottom of the insulating body setting, and the cunning of baffle 8
Dynamic direction is consistent with the direction of circuit-breaker switching on-off, and specifically, in the present embodiment, baffle 8 can slide in left-right direction, moving contact
Unit 3 turns right to close a floodgate, and turns left as separating brake, therefore, the direction of divide-shut brake is in the lateral direction.
In the present embodiment, the linkage mechanism is also kinematic pair, is connected between the baffle 8 and the bracket 13 flexible
Part (removes this, the baffle 8 can also be connected with elastic component with the other components separately set in the insulating body 1), the elastic component
Specially tension spring 9, but not limited to this.9 both ends of tension spring are mounted on the baffle 8 and the bracket 13 respectively,
In the present embodiment, the kinematic pair specifically includes contact 10, the contact supports the first component 21 being arranged on 2
With the second component 81 being arranged on the baffle 8, contact 10 is rotationally connected in the insulating body 1, and contact 10
Pivot center supports 2 pivot center parallel with the contact；First component 21 connects with contact 10 respectively with second component 81
Touching cooperation.The contact 10 is specifically in cross, and the top of the vertical portion of the contact 10 is connected by a shaft 101 rotation
It is connected in the insulating body 1, side and the first component 21 of the horizontal component of the contact 10 are engaged.Specifically, first
The quantity of component 21 is two, which contacts one by one with the right and left of the horizontal component of contact 10
Cooperation.Bending process is done in the bottom of the vertical portion of contact 10, and the bottom sides of the vertical portion of the contact 10 with set
The second component 81 set on 8 top surface medium position of baffle is engaged.8 top surface of baffle is additionally provided with hanging hole 83, the bracket 13
On be also equipped with hanging hole 133,9 both ends of tension spring are mounted on the hanging hole 83 of baffle 8 and the hanging hole 133 of bracket 13 respectively.
In the present embodiment, the first component 21 and second component 81 are cam, and the first component 21 and second
Lever ratio of the component 81 on contact 10 is less than 1, and specifically, the first component 21 and second component 81 are on contact 10
Lever ratio is 1/4, when contact being made to support 2 rotation, 8 quick sliding of baffle can be driven, so that baffle 8 can be in moving-contact unit
3 separated with stationary contact head unit 5 before air inlet 11 is closed in time.
A kind of frame circuit breaker with heat sinking function of the utility model, when combined floodgate, contact supports that 2 rotate clockwise, and keeps off
Plate 8 slides to the right under the action of tension spring 9, and air inlet 11 is opened, meanwhile, as contact supports 2 rotations, contact is supported on 2
Air duct 23 outlet it is gradually opposite with the air outlet 12, open air outlet 12, as shown in Figure 10.At this point, cold air can
Convection current is carried out to enter the contact area of moving-contact unit 3 and stationary contact head unit 5 inside insulating body 1 from bottom air inlet mouth 11
Heat dissipation, and be finally discharged from the air outlet 12 and arc-chutes 6.When separating brake, contact supports that 2 rotate counterclockwise, and pushes contact
Clockwise movement, contact 10 push ventilating board level to slide to the left to part 10 again around the shaft, make baffle 8 moving-contact unit 3 with
(electric arc generate before) closes air inlet 11 before stationary contact head unit 5 separates, meanwhile, contact support the outlet in the air duct 23 on 2 with
Air outlet 12 is staggered, and closes air outlet 12, as shown in figure 11, thus is avoided that when electric arc is generated due to air inlet 11, outlet air
Mouth 12 is not turned off the performance for causing electric arc to overflow and influencing breaker.
Above-described embodiment only is used to further illustrate a kind of frame circuit breaker with heat sinking function of the utility model, but this
Utility model is not limited to embodiment, any letter made by the above technical examples according to the technical essence of the present invention
Single modification, equivalent variations and modification, each fall in the protection scope of technical solutions of the utility model.
Claims (10)
1. a kind of frame circuit breaker with heat sinking function, including insulating body, and the moving contact being set in the insulating body
System, stationary contact head unit；Insulating body is equipped with air inlet and air outlet, and movable contact system includes that contact is supported and is arranged in the touching
The moving-contact unit that head is supported, contact are supported to be rotationally connected on a bracket of insulating body setting；It is characterized by: closing
Lock state, the air inlet and air outlet are in open state, when separating brake, before moving-contact unit is separated with stationary contact head unit, and institute
It states air inlet and air outlet is in closed state.
2. the frame circuit breaker according to claim 1 with heat sinking function, it is characterised in that: the air outlet is set to institute
It states at the top of insulating body, and supports the control structure control being arranged to open and close by the contact, the air inlet is set to institute
State insulating body bottom, and opened and closed by a baffle controls, which is movably set in the insulating body, and with the contact
Support is combined with linkage mechanism, with contact collaborative support.
3. the frame circuit breaker according to claim 2 with heat sinking function, it is characterised in that: the flapper is connected to
The other components separately set in the bracket or the insulating body, and turn that the rotation direction of the baffle and the contact are supported
Dynamic direction is consistent；The linkage mechanism is kinematic pair, is connected with elastic component between the baffle and contact support.
4. the frame circuit breaker according to claim 3 with heat sinking function, it is characterised in that: the kinematic pair includes described
The second component that contact is supported the first component being arranged and is arranged on the baffle, first component are engaged with second component
And it can relatively rotate.
5. the frame circuit breaker according to claim 4 with heat sinking function, it is characterised in that: the first component and second
The transmission ratio of component less than 1, and/or, the first component and second component are cam.
6. the frame circuit breaker according to claim 2 with heat sinking function, it is characterised in that: the barrier slides are set to
In the insulating body, the linkage mechanism is separately to set in kinematic pair, the baffle and the bracket or the insulating body
Elastic component is connected between other components.
7. the frame circuit breaker according to claim 6 with heat sinking function, it is characterised in that: the kinematic pair includes contact
The second component that part, the contact are supported the first component being arranged and be arranged on the baffle, contact are rotationally connected with institute
It states in insulating body, and the pivot center of contact is parallel with the pivot center that the contact is supported；First component and the second structure
Part is engaged with contact respectively.
8. the frame circuit breaker according to claim 7 with heat sinking function, it is characterised in that: the first component and second
Lever ratio of the component on contact less than 1, and/or, the first component and second component are cam.
9. the frame circuit breaker according to claim 2 with heat sinking function, it is characterised in that: the control structure is described
Contact supports the air duct being arranged, and insulating body inner cavity described in the inlet communication in the air duct, the ducting outlet is with the contact branch
It holds and rotates opposite with the air outlet or be staggered.
10. the frame circuit breaker according to claim 1 with heat sinking function, it is characterised in that: the insulating body includes
Left and right two insulating bases being oppositely arranged together, the stationary contact head unit are disposed therein an insulating base, the bracket with
The wherein insulating base compression molding together；The air inlet and outlet is arranged in another insulating base, and air inlet is located at
Another insulating base bottom end, air outlet are located at the top of another insulating base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427153.2U CN209561318U (en) | 2019-03-29 | 2019-03-29 | A kind of frame circuit breaker with heat sinking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427153.2U CN209561318U (en) | 2019-03-29 | 2019-03-29 | A kind of frame circuit breaker with heat sinking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209561318U true CN209561318U (en) | 2019-10-29 |
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ID=68311769
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920427153.2U Active CN209561318U (en) | 2019-03-29 | 2019-03-29 | A kind of frame circuit breaker with heat sinking function |
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| CN (1) | CN209561318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935501A (en) * | 2019-03-29 | 2019-06-25 | 厦门宏发开关设备有限公司 | A kind of frame circuit breaker with heat sinking function |
-
2019
- 2019-03-29 CN CN201920427153.2U patent/CN209561318U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935501A (en) * | 2019-03-29 | 2019-06-25 | 厦门宏发开关设备有限公司 | A kind of frame circuit breaker with heat sinking function |
| CN109935501B (en) * | 2019-03-29 | 2024-07-02 | 厦门宏发开关设备有限公司 | Frame circuit breaker with heat dissipation function |
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