CN220272406U - Auxiliary contact linkage structure - Google Patents
Auxiliary contact linkage structure Download PDFInfo
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- CN220272406U CN220272406U CN202321491338.2U CN202321491338U CN220272406U CN 220272406 U CN220272406 U CN 220272406U CN 202321491338 U CN202321491338 U CN 202321491338U CN 220272406 U CN220272406 U CN 220272406U
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- push rod
- group
- auxiliary
- mounting box
- auxiliary contacts
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- 238000005192 partition Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides an auxiliary contact linkage structure which comprises a first group of auxiliary contacts, a second group of auxiliary contacts, a driving shaft, a driving rod, a first push rod, a second push rod, a mounting box, a reset spring and a mounting pin. The driving shaft can drive the moving contact of the circuit breaker to act, so that the switching-on and switching-off actions of the circuit breaker are realized. The driving rod fixed on the driving shaft drives the first push rod to rotate, and the first push rod drives the second push rod to rotate while pushing the first group of auxiliary contact action messages, and the second push rod pushes the second group of auxiliary contact action messages. According to the utility model, the auxiliary contact groups are added in the longitudinal direction, the number of auxiliary contacts is increased in the original space, the middle push rod is arranged for the purpose, and the linkage arm is arranged on the first push rod, so that the stroke of the second auxiliary contact group is matched, and the normal operation of the second auxiliary contact group is realized.
Description
Technical Field
The present utility model relates to a circuit breaker, in particular a circuit breaker carrying a large current through it.
Background
A circuit breaker refers to a switching device capable of switching on, carrying, and off a current in a normal circuit condition and breaking a current in an abnormal circuit condition for a prescribed time. The circuit breaker uses the maximum current that the shell can bear as the shell current, such as 250A, 630A, 1600A, 2000A, 4000A, 6300A and other shell currents. The circuit breaker is required to meet the maximum rated current in a shell frame with a certain outline dimension, and the normal current of the circuit is switched on and off and the abnormal current is disconnected.
The closing and opening states of the circuit breaker are generally output signals through auxiliary contacts. In the prior art, the position of a driving shaft of a circuit breaker is mainly used as a signal for indicating the closing and opening states, and a plurality of auxiliary contacts which are arranged side by side are pushed by a push rod to output the state signal of the circuit breaker. With the increasing development of intelligent miniaturization of power systems, circuit breakers are required to provide more auxiliary contact outputs within a limited product volume. This requires more auxiliary contacts to be arranged within the limited internal space of the circuit breaker.
Disclosure of Invention
The technical problem to be solved by the utility model is to arrange more auxiliary contacts in a limited internal space of the circuit breaker and ensure the matching of the working strokes of the auxiliary contacts through a transmission piece.
In order to achieve the above purpose, the utility model designs a structural schematic diagram of a first push rod, which comprises a first group of auxiliary contacts, a second group of auxiliary contacts, a driving shaft, a driving rod, the first push rod, a second push rod, a mounting box, a reset spring and a mounting pin. The driving rod is fixed on a driving shaft, and the driving shaft is rotatably arranged on the bracket. The mounting box is fixed on the bracket. The first set of auxiliary contacts is secured in the mounting box. The first push rod is rotatably arranged on the mounting box. The driving shaft rotates to drive the driving rod to push the first push rod to rotate, and the first push rod pushes the first group of auxiliary contacts to act. In particular, a second group of auxiliary contacts are also fixedly arranged in the mounting box of the auxiliary contact linkage structure. The first push rod pushes a second push rod rotatably mounted on the mounting box. The second push rod pushes the second group of auxiliary contacts to act.
Further, the first push rod is provided with a first rotating shaft, and the first rotating shaft penetrates through a first rotating shaft hole in the mounting box and is rotatably mounted on the mounting box. And a driving surface is arranged at one end, close to the driving rod, of the first push rod. And a first pushing surface is arranged at one end, close to the first group of auxiliary contacts, of the first push rod. And one end, close to the second group of auxiliary contacts, of the first push rod is provided with a linkage arm.
Further, the second push rod is provided with a second rotating shaft, and the second rotating shaft penetrates through a second rotating shaft hole in the mounting box and is rotatably mounted on the mounting box. And a linkage surface is arranged at one end, close to the first push rod, of the second push rod. And a second pushing surface is arranged at one end, close to the second group of auxiliary contacts, of the second push rod.
Further, the left and right sides of installation box are provided with first pivot hole, second pivot hole, the pinhole that is used for first pivot, second pivot, auxiliary contact to install respectively. The inner cavity of the mounting box is provided with an assembly partition wall and a contact partition wall, and the assembly partition wall and the contact partition wall divide the inner cavity of the mounting box into a first group of mounting grooves and a second group of mounting grooves for assisting in contact mounting.
Further, the top end of the linkage arm is of a fork-shaped structure, a first linkage end is arranged on the fork branch close to the first rotating shaft, and a second linkage end is arranged on the fork branch far away from the first rotating shaft.
According to the utility model, the auxiliary contact groups are added in the longitudinal direction, the number of auxiliary contacts is increased in the original space, the middle push rod is arranged for the purpose, and the linkage arm is arranged on the first push rod, so that the stroke of the second auxiliary contact group is matched, and the normal operation of the second auxiliary contact group is realized. It is also possible that the structure further extends in the longitudinal direction to add further sets of auxiliary contacts.
Drawings
FIG. 1 is a cross-sectional view of an auxiliary contact linkage according to the present utility model
FIG. 2 is an exploded view of an auxiliary contact linkage according to the present utility model
FIG. 3 is a schematic side view showing the opening state of the auxiliary contact linkage structure according to the present utility model
FIG. 4 is a schematic side view of an auxiliary contact linkage structure in a closed state
Fig. 5 is a schematic view of a first push rod of an auxiliary contact linkage structure according to the present utility model
Fig. 6 is a schematic structural view of a second push rod of an auxiliary contact linkage structure according to the present utility model
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.
Marking:
a first set of auxiliary contacts 1;
a first movable contact 101; a first mounting body 102; a first mounting hole 1021;
a second set of auxiliary contacts 2;
a second movable contact 201; a second mounting body 202; a second mounting hole 2021;
a drive shaft 3; a drive lever 4;
a first push rod 5;
a first rotation shaft 501; a drive surface 502; a first pushing surface 503; linkage arm 504; a first linkage end 5041; second link end 5042
A second push rod 6;
a second rotation shaft 601; a linkage surface 602; a second push surface 603;
a mounting box 7;
a first rotation shaft hole 701; a second rotation shaft hole 702; pin holes 703; a first set of mounting slots 704; a second set of mounting slots 705; a component partition 706; contact barrier 707
A return spring 8; and a mounting pin 9.
Based on the utility model, in order to meet the aim of adding more groups of auxiliary contacts, as shown in fig. 1 to 6, an auxiliary contact linkage structure is designed, and comprises a first group of auxiliary contacts 1, a second group of auxiliary contacts 2, a driving shaft 3, a driving rod 4, a first push rod 5, a second push rod 6, a mounting box 7, a reset spring 8 and a pile mounting pin 9. As shown in fig. 1, the driving shaft 3 is rotatably installed on a bracket inside the circuit breaker, and can drive a moving contact of the circuit breaker to act, so as to realize the closing and opening actions of the circuit breaker. The position state of the drive shaft 3 is synchronized with the closing and opening state of the circuit breaker. A driving rod 4 is fixed on the driving shaft 3, and the driving rod 4 is synchronous with the action of the driving shaft 3. The bracket inside the circuit breaker is also fixedly provided with a mounting box 7, and auxiliary contacts are fixedly mounted in the mounting box 7.
As shown in fig. 2, the inner cavity of the mounting box 7 is provided with an assembly bulkhead 706 and a contact bulkhead 707, and the assembly bulkhead 706 and the contact bulkhead 707 divide the inner cavity of the mounting box 7 into a first set of mounting grooves 704 and a second set of mounting grooves 705 for assisting in contact mounting. The first auxiliary contact 101 and the second auxiliary contact 102 are fixedly mounted in the first set of mounting grooves 704 and the second set of mounting grooves 705, respectively. The number of auxiliary contact mounting grooves per set may be increased or decreased depending on the lateral size of the auxiliary contact mounting space, and as the number of auxiliary contacts mounted in the lateral direction per set is increased, the number of contact barrier 707 is also increased. When the size of the auxiliary contact mounting space in the longitudinal direction is allowed, a plurality of sets of auxiliary contacts can be disposed, and the number of the assembly partitions 706 can be increased. The assembly bulkhead 706 and the contact bulkhead 707 ensure mounting insulation between auxiliary contacts in addition to being used to construct auxiliary contact mounting slots. Further, since the auxiliary contact housing itself has insulation properties, the auxiliary contacts can be directly mounted and fixed without providing the module bulkhead 706 and the contact bulkhead 707 in the mounting case 7 when the insulation requirement is not high. The mounting box 7 is provided with a first rotation shaft hole 701, a second rotation shaft hole 702, and a pin hole 703 for mounting the first rotation shaft 501, the second rotation shaft 601, and the auxiliary contacts, respectively, on the left and right sides thereof. The first set of auxiliary contacts 1 and the second set of auxiliary contacts 2 are respectively arranged in the first set of mounting grooves 704 and the second set of mounting grooves 705, the first set of auxiliary contacts 1 and the second set of auxiliary contacts 2 are provided with a first mounting hole 1021 and a second mounting hole 2021, and mounting pins 9 of the different sets of auxiliary contacts respectively transversely penetrate through the first mounting hole 1021 and the second mounting hole 2021 and corresponding pin holes 703, so that the first set of auxiliary contacts 1 and the second set of auxiliary contacts 2 are fixedly arranged in the mounting box 7. The first push rod 5 passes through the first rotating shaft hole 701 and is rotatably arranged on the mounting box 7. The second push rod 6 passes through the second rotating shaft hole 702 and is rotatably arranged on the mounting box 7. The first push rod 5 also passes through the return spring 8, so that the first push rod 5 always has a movement tendency away from the first set of auxiliary contacts 1.
As shown in fig. 5, the first push rod 5 is a rotary member with a cylindrical first rotary shaft 501 disposed therebetween. The first rotating shaft 501 penetrates through a first rotating shaft hole 701 on the mounting box 7, so that the first push rod 5 is rotatably mounted on the mounting box 7. A driving surface 502 is disposed at one end of the first push rod 5 near the driving rod 4. The driving surface 502 is opposite to the driving rod 4, and the driving surface 502 is coupled with the driving rod 4 under the action of the reset spring 8. A first pushing surface 503 is disposed on an end of the first push rod 5 near the first set of auxiliary contacts 1. The width of the first pushing surface 503 is matched with the number of auxiliary contacts arranged transversely, and the greater the number of auxiliary contacts arranged transversely, the wider the width of the first pushing surface 503. The first push surface 503 is opposite to and coupled to the first movable contact 101 on the first set of auxiliary contacts 1. The first push rod 5 is provided with a linkage arm 504 at one end near the second set of auxiliary contacts 2. The top end of the linkage arm 504 is a fork structure, a first linkage end 5041 is disposed near the fork of the first rotating shaft 501, and a second linkage end 5042 is disposed far from the fork of the first rotating shaft 501.
As shown in fig. 6, the second push rod 6 is a rotary member with a cylindrical second rotary shaft 601 disposed therebetween. The second rotating shaft 601 penetrates through a second rotating shaft hole 702 on the mounting box 7, so that the second push rod 6 is rotatably mounted on the mounting box 7. The second push rod 6 is provided with a linkage surface 602 at one end near the first push rod 5. The linkage surface 602 is opposite to the fork-shaped structure at the top end of the linkage arm 504, and the linkage surface 602 is coupled with the first linkage end 5041 and the second linkage end 5042 under the action of the return spring 8. A second pushing surface 603 is arranged on one end of the second push rod 6 near the second group of auxiliary contacts 2. The width of the second pushing surface 603 is matched with the number of auxiliary contacts arranged transversely, and the larger the number of auxiliary contacts arranged transversely is, the wider the width of the second pushing surface 603 is. The second push surface 603 is opposite to and coupled with the second movable contact 201 on the second set of auxiliary contacts 2.
As shown in fig. 3, the circuit breaker is in a breaking state, the first movable contact 101 of the first auxiliary contact 1 protrudes from the first mounting body 102, and the first movable contact 101 is attached to the first pushing surface 503 and pushes the first push rod 5 to rotate in a direction away from the first auxiliary contact 1. At the same time, the second movable contact 201 of the second auxiliary contact 2 protrudes out of the second mounting body 202, and the second movable contact 201 is attached to the second pushing surface 603 and pushes the second push rod 6 to rotate in a direction away from the second auxiliary contact 2. At this time, the coupling surface 602 is coupled to the first coupling end 5041.
As shown in fig. 4, when the circuit breaker is closed, the driving shaft 3 rotates to drive the driving rod 4 to be attached to the driving surface 502, so as to push the first push rod 5 to rotate towards the first group of auxiliary contacts 1. The first pushing surface 503 is attached to the first movable contact 101, and pushes the first movable contact 101 to recess into the first mounting body 102, so as to implement the auxiliary letter and newspaper. Simultaneously, the first linkage end 5041 at the top end of the linkage arm 504 on the first push rod 5 is firstly attached to the linkage surface 602, so as to push the second push rod 6 to rotate towards the second group of auxiliary contacts 2. During the rotation of the second push rod 6, the second pushing surface 603 is attached to the second movable contact 201 of the second auxiliary contact 2, so as to push the second movable contact 201 to be recessed into the first mounting body 202, and thus auxiliary letter and newspaper are implemented. As the second push rod 6 rotates, the first linkage end 5041 gradually separates from the linkage surface 602, and the second linkage end 5042 gradually engages with the linkage surface 602 to further push the second movable contact 201 into place. In this way, the acting point of the linkage arm 504 on the linkage surface 602 is always kept at a larger distance from the rotation center of the second rotating shaft 601, so that the second push rod 6 can be pushed to complete the rotation action by a smaller transmission force.
It should be noted that in this document, relational terms such as first and second, front and back, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Although the embodiments disclosed in the present application are described above, the descriptions are merely embodiments adopted for the purpose of facilitating understanding of the present application, and are not intended to limit the present utility model. Any person skilled in the art to which this application pertains will be able to make any modifications and variations in form and detail of implementation without departing from the spirit and scope of the disclosure, but the scope of protection of this application shall be subject to the scope of the claims that follow.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, substitution of other connection manners described above may refer to corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.
Claims (5)
1. An auxiliary contact linkage structure comprises a first group of auxiliary contacts (1), a second group of auxiliary contacts (2), a driving shaft (3), a driving rod (4), a first push rod (5), a second push rod (6), a mounting box (7), a reset spring (8) and a mounting pin (9);
the driving rod (4) is fixed on the driving shaft (3), and the driving shaft (3) is rotatably arranged on the bracket;
the mounting box (7) is fixed on the bracket;
the first set of auxiliary contacts (1) is fixed in a mounting box (7);
the first push rod (5) is rotatably arranged on the mounting box (7);
the driving shaft (3) rotates to drive the driving rod (4) to push the first push rod (5) to rotate, and the first push rod (5) pushes the first group of auxiliary contacts (1) to act;
it is characterized in that the method comprises the steps of,
a second group of auxiliary contacts (2) are also fixedly arranged in the installation box (7) of the auxiliary contact linkage structure;
the first push rod (5) pushes a second push rod (6) rotatably arranged on the mounting box (7);
the second push rod (6) pushes the second group of auxiliary contacts (2) to act.
2. An auxiliary contact linkage according to claim 1, characterized in that the first push rod (5) is provided with a first rotary shaft (501), the first rotary shaft (501) penetrating through a first rotary shaft hole (701) in the mounting box (7) and being rotatably mounted on the mounting box (7);
a driving surface (502) is arranged at one end, close to the driving rod (4), of the first push rod (5);
a first pushing surface (503) is arranged at one end, close to the first group of auxiliary contacts (1), of the first push rod (5);
and a linkage arm (504) is arranged at one end, close to the second group of auxiliary contacts (2), of the first push rod (5).
3. An auxiliary contact linkage according to claim 1, wherein the second push rod (6) is provided with a second rotating shaft (601), the second rotating shaft (601) penetrates through a second rotating shaft hole (702) in the mounting box (7), and is rotatably mounted on the mounting box (7);
a linkage surface (602) is arranged at one end, close to the first push rod (5), of the second push rod (6);
and a second pushing surface (603) is arranged at one end, close to the second group of auxiliary contacts (2), of the second push rod (6).
4. The auxiliary contact linkage structure according to claim 1, wherein the left and right sides of the mounting box (7) are respectively provided with a first rotating shaft hole (701), a second rotating shaft hole (702) and a pin hole (703) for mounting the first rotating shaft (501), the second rotating shaft (601) and the auxiliary contacts;
an inner cavity of the mounting box (7) is provided with an assembly partition wall (706) and a contact partition wall (707), and the assembly partition wall (706) and the contact partition wall (707) divide the inner cavity of the mounting box (7) into a first group of mounting grooves (704) and a second group of mounting grooves (705) for assisting in contact mounting.
5. An auxiliary contact linkage structure according to claim 2, wherein the top end of the linkage arm (504) is a fork structure, the fork near the first rotating shaft (501) is provided with a first linkage end (5041), and the fork far from the first rotating shaft (501) is provided with a second linkage end (5042).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321491338.2U CN220272406U (en) | 2023-06-12 | 2023-06-12 | Auxiliary contact linkage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321491338.2U CN220272406U (en) | 2023-06-12 | 2023-06-12 | Auxiliary contact linkage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220272406U true CN220272406U (en) | 2023-12-29 |
Family
ID=89302851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321491338.2U Active CN220272406U (en) | 2023-06-12 | 2023-06-12 | Auxiliary contact linkage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220272406U (en) |
-
2023
- 2023-06-12 CN CN202321491338.2U patent/CN220272406U/en active Active
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