CN207409445U - Coupling mechanism built in a kind of plastic casing type dc circuit breaker - Google Patents
Coupling mechanism built in a kind of plastic casing type dc circuit breaker Download PDFInfo
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- CN207409445U CN207409445U CN201721427553.0U CN201721427553U CN207409445U CN 207409445 U CN207409445 U CN 207409445U CN 201721427553 U CN201721427553 U CN 201721427553U CN 207409445 U CN207409445 U CN 207409445U
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Abstract
The utility model is related to coupling mechanisms built in a kind of plastic casing type dc circuit breaker, including pedestal and three groups of contact units, pedestal includes bottom plate, two blocks of side plates and two pieces of partition plates, and base interior is separated into A spaces, B spaces and C spaces, moving contact one end of No.1 contact unit passes sequentially through copper litz wire, No.1 joint cover and L-type joint cover are connected with the static contact of No. two contact units, the back side of bottom plate is equipped with to place the groove of L-type joint cover, through hole there are one being set in the middle part of the bottom plate in A spaces, the No.1 joint cover and L-type joint cover contact in the through hole, and pass through screw and be fixedly connected.Compared with prior art, the utility model realizes connecting between pole and pole by copper litz wire, No.1 joint cover and L-type joint cover, can effectively reduce home loop contact resistance；And arranged without external short circuit, reduce switch external installation dimension space.
Description
Technical field
The utility model is related to low-voltage circuit breaker technical fields, and in particular to built in a kind of plastic casing type dc circuit breaker
Coupling mechanism.
Background technology
Since the new century, solar photovoltaic industry has become one of world today's new industry of greatest concern, light
Raw material is not required in volt power generation, and no gas discharge belongs to pollution-free industry, has pollution-free, safety, long-life, never exhaustion etc. is excellent
Point is referred to as 21 century most important new energy, is widely used.
With the fast development of new energy industry, DC techniques are more and more widely used therewith, particularly the sun
The operating voltage of energy electricity generation system is higher and higher, and higher requirement, low-voltage direct breaker are proposed to low-voltage direct breaker
Rated operational voltage be even as high as 1500V.
Traditionally, it is the rated operational voltage of raising dc circuit breaker, the mode of generally use multipole pole connection, i.e., by more
Breakpoint realizes higher operating voltage.There are mainly two types of the modes of pole connection：One kind is directly to arrange to realize pole by external short circuit
Between connect, but this kind of pole is coupled structure easily increases loop resistance, and heat is made to add up at short circuit, causes breaker temperature liter excessively high,
Working performance reduces.Another kind is using internal short circuit mode.
In current existing product, the following two kinds mode is generally used：(1) reduce static contact lower end pedestal wall thickness it is small with
Expand the installation space that static contact structure needs；(2) the static contact slot being coupled built in pedestal is got through into a part, passes through pedestal
Bottom sealing plate jacks up static contact.But above two structure is impacted in accessory size tolerance, parts machining process is built-in
The positioning of nut, once there is deviation, static contact sinks, and is unable to reach original effect, and strong in the impact of high breaking
Under degree, it is easier to the gap between part and part be caused to increase, static contact is caused to sink.
Utility model content
The purpose of this utility model is exactly to be provided to overcome the problems of the above-mentioned prior art inside a kind of saving
Coupling mechanism built in the plastic casing type dc circuit breaker in space.
The purpose of this utility model can be achieved through the following technical solutions：In a kind of plastic casing type dc circuit breaker
Coupling mechanism is put, which includes pedestal and three groups of contact units, and the pedestal includes bottom plate, two blocks of side plates and two
Block partition plate, and base interior is separated into A spaces, B spaces and C spaces, No.1 contact unit, No. two contact units and No. three are touched
Head unit is separately fixed in the A spaces, B spaces and C spaces, and moving contact one end of the No.1 contact unit passes sequentially through
Copper litz wire, No.1 joint cover and L-type joint cover are connected with the static contact of No. two contact units, and the back side of the bottom plate, which is equipped with, to be used
In the groove for placing L-type joint cover, set in the middle part of the bottom plate in A spaces there are one through hole, the No.1 joint cover and L-type are coupled
Plate contacts in the through hole, and passes through screw and be fixedly connected.The utility model is joined by copper litz wire, No.1 joint cover and L-type
Knot tying realizes connecting between pole and pole, can effectively reduce home loop contact resistance, reduces product Wen Sheng；Further, since
The utility model is used to connect the No.1 joint cover of No.1 contact unit and No. two contact units and L-type joint cover is advisable respectively base
The both sides of seat bottom plate so being arranged without external short circuit, reduce switch external installation dimension space.
Contact unit described in every group includes a static contact, a moving contact and shaft, the static contact and moving contact
The place to contact with each other is equipped with protrusion, and one end of the moving contact is plugged in shaft.Due to the master of moving contact and static contact
Body material is copper, and spark is easily generated if contacted directly, so protrusion is set in the place that moving contact and static contact contact, and
The raised material is the materials such as graphite, can be with the generation of actual spark, protective breaker.
The shaft includes rotatable shaft core and the supporting plate being fixedly connected with shaft core, the tail end of the moving contact pass through
Shaft core is simultaneously close to the upper surface in the middle part of supporting plate.
One end of the static contact of the No.1 contact unit and No. three contact units is equipped with external terminal board, and No.1 contact list
The static contact of member and No. three contact units is fixedly connected by three screws in angular distribution with bottom plate.When shaft core rotates,
Moving contact can be driven to be rotated around its tail end, realize the dynamic contact and separation touched with static contact；But due to moving contact and static contact
In separation, required power is larger, so setting supporting plate, the stress point of moving contact is moved forward, and by lever principle, moves and touches
The power bigger that head portion is subject to ensures the quick separating of moving contact and static contact.
The one side side wall in the A spaces and C spaces is equipped with the elastic wavy bulge perpendicular to bottom plate, the elastic wave
Shape wave protrusion is close to fix with the side of static contact.Elastic wavy bulge is set, and what guarantee static contact can be stablized is placed on A
In space or C spaces, reduce the dimension precision requirement to static contact.
Static contact one end of No. two contact units is equipped with the not closed circular slot parallel to bottom plate, on the bottom plate
Equipped with for placing the long stripes through hole of not closed circular slot, the static contact of No. two contact units is rectangular by four
The screw of distribution is fixedly connected with bottom plate.
The strip that one end that the L-type joint cover is not connected with No.1 joint cover is equipped with closed circular slot does not match
Shape bolt.By the setting of bolt and slot, facilitate installation.
The tail end of the moving contact of No. two contact units and No. three contact units by copper litz wire respectively with one two
The connection of number joint cover, No. two joint covers are fixedly connected with bottom plate by screw, and No. two joint covers pass through heat member component
It is connected with an external terminal board.
The first component of heat being connected with the moving contact of No. two contact units is arranged in B spaces, and coupled is external
Line plate is arranged in A spaces, and the two is connected by conductive plate.Such setting so that entire mechanism is A phases and C phases two into two
Go out, on electric clearance and step electrical distance advantageously.
The first component of heat is overload and short-circuit protection buckle releaser.
Compared with prior art, the beneficial effects of the utility model are embodied in following several respects：
(1) connecting between pole and pole is realized by copper litz wire, No.1 joint cover and L-type joint cover, can effectively dropped
Low home loop contact resistance reduces product Wen Sheng；
(2) since the utility model is used to connect the No.1 joint cover and L-type of No.1 contact unit and No. two contact units
Joint cover is advisable the both sides of pedestal bottom plate respectively, so being arranged without external short circuit, reduces switch external installation dimension space；
(3) the utility model uses A phases and C phase Two In and Two Out, on electric clearance and step electrical distance advantageously.
Description of the drawings
Fig. 1 is the positive structure schematic of the utility model；
Fig. 2 is the structure schematic diagram of the utility model；
Fig. 3 is the configuration schematic diagram of the utility model；
Fig. 4 is the structure diagram of the utility model pedestal；
Fig. 5 is the structure diagram of the utility model moving contact；
Fig. 6 is each component connection diagram of the utility model.
Wherein, 1 is pedestal, and 2 be No.1 contact unit, and 3 be No. two contact units, and 4 be No. three contact units, and 5 be stationary contact
Head, 6 be moving contact, and 7 be protrusion, and 8 be No.1 joint cover, and 9 be L-type joint cover, and 10 be bolt, and 11 be slot, and 12 be No. two connection
Knot tying, 13 be through hole, and 14 be long stripes through hole, and 15 be elastic wavy bulge, and 16 be A spaces, and 17 be B spaces, and 18 is empty for C
Between, 19 be shaft, and 20 be shaft core, and 21 be supporting plate, and 22 be external terminal board, and 23 be copper litz wire, and 24 take off for overload and short-circuit protection
Device is detained, 25 be screw, and 26 be bottom plate, and 27 be side plate, and 28 be partition plate.
Specific embodiment
Elaborate below to the embodiment of the utility model, the present embodiment using technical solutions of the utility model before
It puts and is implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
Embodiment 1
Coupling mechanism built in a kind of plastic casing type dc circuit breaker, structure as shown in figs. 1 to 6, the coupling mechanism bag
Pedestal 1 and three groups of contact units are included, pedestal 1 includes 26, two blocks of side plates 27 of bottom plate and two pieces of partition plates 28, and will be in pedestal 1
Part is divided into A spaces 16, B spaces 17 and C spaces 18, and 2, No. two contact units 3 of No.1 contact unit and No. three contact units 4 divide
It is not fixed in A spaces 16, B spaces 17 and C spaces 18,6 one end of moving contact of No.1 contact unit 2 passes sequentially through copper litz wire
23rd, No.1 joint cover 8 and L-type joint cover 9 are connected with the static contact 5 of No. two contact units 3, and the back side of bottom plate 26 is equipped with to put
The groove of L-type joint cover 9 is put, is set positioned at 26 middle part of bottom plate in A spaces 16 there are one through hole 13, No.1 joint cover 8 and L-type are coupled
Plate 9 contacts in the through hole 13, and passes through screw 25 and be fixedly connected.The utility model passes through copper litz wire 23, No.1 joint cover 8
And L-type joint cover 9 realizes connecting between pole and pole, can effectively reduce home loop contact resistance, reduces product Wen Sheng；Separately
Outside, since the utility model is used to connect the No.1 joint cover 8 and L-type joint cover of No.1 contact unit 2 and No. two contact units 3
9 both sides for being advisable 1 bottom plate 26 of pedestal respectively so being arranged without external short circuit, reduce switch external installation dimension space.
Every group of contact unit includes 5, moving contacts 6 of a static contact and shaft 19, and static contact 5 is mutual with moving contact 6
The place of contact is equipped with protrusion 7, and one end of moving contact 6 is plugged in shaft 19.Due to the main body of moving contact 6 and static contact 5
Material is copper, and spark is easily generated if contacted directly, so protrusion 7 is set in the place that moving contact 6 and static contact 5 contact,
And the material of the protrusion 7 is the materials such as graphite, it can be with the generation of actual spark, protective breaker.
Shaft 19 includes rotatable shaft core 20 and the supporting plate 21 being fixedly connected with shaft core 20, the tail end of moving contact 6 are worn
It crosses shaft core 20 and is close to the upper surface at 21 middle part of supporting plate.
One end of the static contact 5 of No.1 contact unit 2 and No. three contact units 4 is equipped with external terminal board 22, and No.1 contact
The static contact 5 of unit 2 and No. three contact units 4 is fixedly connected by three in the screw 25 of angular distribution with bottom plate 26.Work as axis
When core 20 rotates, moving contact 6 can be driven to be rotated around its tail end, realize the dynamic contact and separation touched with static contact 5；But due to dynamic
Contact 6 and static contact 5 power required in separation are larger, so setting supporting plate 21, the stress point of moving contact 6 is moved forward,
By lever principle, power bigger that 6 head of moving contact is subject to ensures the quick separating of moving contact 6 and static contact 5.
The one side side wall in A spaces 16 and C spaces 18 is equipped with the elastic wavy bulge 15 perpendicular to bottom plate 26, elastic wave
Shape wave protrusion 15 is close to fix with the side of static contact 5.Elastic wavy bulge 15 is set, ensures what static contact 5 can be stablized
It is placed in A spaces 16 or C spaces 18, reduces the dimension precision requirement to static contact 5, as shown in figure 4,
5 one end of static contact of No. two contact units 3 is equipped with the not closed circular slot 11 parallel to bottom plate 26, on bottom plate 26
Equipped with for placing the long stripes through hole 14 of not closed circular slot 11, the static contacts 5 of No. two contact units 3 is in square by four
The screw 25 of shape distribution is fixedly connected with bottom plate 26.
The strip that one end that L-type joint cover 9 is not connected with No.1 joint cover 8 is equipped with closed circular slot 11 does not match
Shape bolt 10.By the setting of bolt 10 and slot 11, facilitate installation.
The tail end of the moving contact 6 of No. two contact units 3 and No. three contact units 4 by copper litz wire 23 respectively with one two
Number joint cover 12 connects, as shown in figure 5, No. two joint covers 12 are fixedly connected with bottom plate 26 by screw 25, No. two joint covers 12
It is connected by overload and short-circuit protection buckle releaser 24 with an external terminal board 22.
The overload and short-circuit protection buckle releaser 24 being connected with the moving contact 6 of No. two contact units 3 are arranged in B spaces 17,
Coupled external terminal board 22 is arranged in A spaces 16, as shown in fig. 6, the two is connected by conductive plate.Such setting,
So that entire mechanism is A phases and C phase Two In and Two Out, on electric clearance and step electrical distance advantageously.
Claims (10)
1. coupling mechanism built in a kind of plastic casing type dc circuit breaker, which includes pedestal and three groups of contact lists
Member, the pedestal includes bottom plate, two blocks of side plates and two pieces of partition plates, and base interior is separated into A spaces, B spaces and C skies
Between, No.1 contact unit, No. two contact units and No. three contact units are separately fixed in the A spaces, B spaces and C spaces,
It is characterized in that, moving contact one end of the No.1 contact unit passes sequentially through copper litz wire, No.1 joint cover and L-type joint cover
It is connected with the static contact of No. two contact units, the back side of the bottom plate is equipped with to place the groove of L-type joint cover, empty positioned at A
Between bottom plate in the middle part of set there are one through hole, the No.1 joint cover and L-type joint cover contact in the through hole, and pass through screw and consolidate
Fixed connection.
2. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 1, which is characterized in that every group
The contact unit includes a static contact, a moving contact and shaft, the ground that the static contact contacts with each other with moving contact
Side is equipped with protrusion, and one end of the moving contact is plugged in shaft.
3. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 2, which is characterized in that described
Shaft includes rotatable shaft core and the supporting plate being fixedly connected with shaft core, and the tail end of the moving contact passes through shaft core and and supporting plate
It is close to the upper surface at middle part.
4. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 2, which is characterized in that described
One end of the static contact of No.1 contact unit and No. three contact units is equipped with external terminal board, and No.1 contact unit and No. three contacts
The static contact of unit is fixedly connected by three in the screw of angular distribution with bottom plate.
5. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 4, which is characterized in that described
The one side side wall in A spaces and C spaces be equipped with perpendicular to bottom plate elastic wavy bulge, it is described elasticity wavy bulge with it is quiet
It is close to fix in the side of contact.
6. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 2, which is characterized in that described
Static contact one end of No. two contact units is equipped with the not closed circular slot parallel to bottom plate, and the bottom plate is equipped with to place
The not long stripes through hole of closed circular slot, the static contacts of No. two contact units by the screws of four rectangular distributions with
Bottom plate is fixedly connected.
7. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 6, which is characterized in that described
One end that L-type joint cover is not connected with No.1 joint cover is equipped with the strip bolt to match with not closed circular slot.
8. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 1, which is characterized in that described
The tail end of the moving contact of No. two contact units and No. three contact units is connected by copper litz wire with No. two joint covers respectively,
No. two joint covers are fixedly connected with bottom plate by screw, and No. two joint covers pass through hot first component and an external terminal board
Connection.
9. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 8, which is characterized in that with institute
The first component of heat for stating the moving contact connection of No. two contact units is arranged in B spaces, and coupled external terminal board is arranged on A skies
In, the two is connected by conductive plate.
10. coupling mechanism built in a kind of plastic casing type dc circuit breaker according to claim 8 or claim 9, which is characterized in that
The first component of heat is overload and short-circuit protection buckle releaser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427553.0U CN207409445U (en) | 2017-10-31 | 2017-10-31 | Coupling mechanism built in a kind of plastic casing type dc circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427553.0U CN207409445U (en) | 2017-10-31 | 2017-10-31 | Coupling mechanism built in a kind of plastic casing type dc circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207409445U true CN207409445U (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721427553.0U Active CN207409445U (en) | 2017-10-31 | 2017-10-31 | Coupling mechanism built in a kind of plastic casing type dc circuit breaker |
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| CN (1) | CN207409445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644792A (en) * | 2017-10-31 | 2018-01-30 | 德力西电气有限公司 | Coupling mechanism built in a kind of plastic casing type dc circuit breaker |
-
2017
- 2017-10-31 CN CN201721427553.0U patent/CN207409445U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644792A (en) * | 2017-10-31 | 2018-01-30 | 德力西电气有限公司 | Coupling mechanism built in a kind of plastic casing type dc circuit breaker |
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