CN219642688U - Transmission structure and circuit breaker - Google Patents
Transmission structure and circuit breaker Download PDFInfo
- Publication number
- CN219642688U CN219642688U CN202223214226.0U CN202223214226U CN219642688U CN 219642688 U CN219642688 U CN 219642688U CN 202223214226 U CN202223214226 U CN 202223214226U CN 219642688 U CN219642688 U CN 219642688U
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- transmission
- hinged
- transmission assembly
- connecting shaft
- bracket
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 86
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The utility model discloses a transmission structure and a circuit breaker, wherein the transmission structure comprises: a housing; the first transmission assembly comprises a bracket, a connecting shaft and a driving arm, wherein the bracket is arranged on the shell, the connecting shaft is hinged with the bracket, and one end of the driving arm is connected with one end of the connecting shaft, which is far away from the bracket; the second transmission assembly is hinged with the first transmission assembly, and the connecting shaft can drive the driving arm to drive the second transmission assembly to move upwards; a spindle, a hinge housing; one end of the third transmission component is arranged on the main shaft, the other end of the third transmission component is hinged with the second transmission component, and the second transmission component can drive the third transmission component to swing upwards or downwards; one end of the driving crank arm is arranged on the main shaft, and the other end of the driving crank arm is hinged with the insulating pull rod. Through the first transmission assembly, the second transmission assembly, the third transmission assembly and the main shaft, the linear displacement of the insulation pull rod is converted into the rotation in the vertical direction, the displacement of the transmission mechanism in the linear direction is reduced, and the size of the shell is reduced.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a transmission structure and a circuit breaker.
Background
A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time.
The movable contact of the insulating pull rod in the circuit breaker generally needs to be displaced so as to be separated from the fixed contact, and the transmission mechanism in the existing circuit breaker has an overlong stroke, so that the shell is enlarged, and the production cost is increased.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a transmission structure, which reduces the stroke of the transmission mechanism and reduces the shell.
The utility model also provides a circuit breaker with the transmission structure.
A transmission structure according to an embodiment of the first aspect of the present utility model includes:
a housing;
the first transmission assembly comprises a bracket, a connecting shaft and a driving arm, wherein the bracket is arranged on the shell, the connecting shaft is hinged with the bracket, and one end of the driving arm is connected with one end, far away from the bracket, of the connecting shaft;
the second transmission assembly is hinged with the first transmission assembly, and the connecting shaft can drive the driving arm to drive the second transmission assembly to move upwards;
a spindle hinged to the housing;
one end of the third transmission component is arranged on the main shaft, the other end of the third transmission component is hinged with the second transmission component, and the second transmission component can drive the third transmission component to swing upwards or downwards;
one end of the driving crank arm is arranged on the main shaft, and the other end of the driving crank arm is hinged with the insulating pull rod;
when the third transmission assembly swings upwards, the driving crank arm swings to the side far away from the insulation pull rod, and when the third transmission assembly swings downwards, the driving crank arm swings to the side close to the insulation pull rod.
According to the transmission structure of the first aspect of the embodiment of the utility model, at least the following beneficial effects are achieved: through first drive assembly, second drive assembly, third drive assembly and main shaft cooperation, the straight line displacement of insulating pull rod changes into the rotation of vertical direction, has reduced the displacement of drive mechanism in the straight line direction in the horizontal direction, has utilized the surplus space of casing of vertical direction, has reduced the size on the casing horizontal direction for the casing size reduces.
According to some embodiments of the utility model, the first transmission assembly further comprises a bearing and a dynamic seal, the bearing is arranged on the bracket, the connecting shaft is hinged with the bearing, and the dynamic seal is movably arranged on the shell and is connected with the other end of the connecting shaft.
According to some embodiments of the utility model, the other end of the driving arm is provided with a bolt, a first ball is arranged on the bolt, the second transmission assembly comprises a first joint bearing and a second joint bearing in threaded connection with the first joint bearing, the first joint bearing is hinged with the first ball, and the second joint bearing is hinged with one end of the third transmission assembly.
According to some embodiments of the utility model, the third transmission assembly comprises two first rocker arms, one ends of the two first rocker arms are connected with the main shaft, the other ends of the two first rocker arms are connected through screws, second balls are arranged on studs of the screws between the two first rocker arms, and the second joint bearings are hinged with the second balls.
According to some embodiments of the utility model, the driving crank arms are arranged in three.
According to some embodiments of the utility model, a second rocker arm is further arranged on the main shaft, a supporting frame is arranged on the shell, and a brake separating spring is arranged between the second rocker arm and the supporting frame.
A circuit breaker according to an embodiment of the second aspect of the present utility model has the transmission structure as described above.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a circuit breaker according to an embodiment of the present utility model;
fig. 2 is an enlarged partial schematic view of the circuit breaker shown in fig. 1.
A housing 100, a support frame 110, and a brake release spring 120;
the first transmission assembly 200, the bracket 210, the connecting shaft 220, the driving arm 230, the latch 231, the first ball 232, the bearing 240 and the dynamic seal 250;
a second transmission assembly 300, a first knuckle bearing 310, a second knuckle bearing 320;
a main shaft 400, a second swing arm 410;
a third transmission assembly 500, a first rocker arm 510, a second ball 520;
the crank arm 600 is driven.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 and 2, a transmission structure according to an embodiment of a first aspect of the present utility model includes a housing 100; the first transmission assembly 200 comprises a bracket 210, a connecting shaft 220 and a driving arm 230, wherein the bracket 210 is arranged on the shell 100, the connecting shaft 220 is hinged with the bracket 210, and one end of the driving arm 230 is connected with one end of the connecting shaft 220 far away from the bracket 210; the second transmission assembly 300 is hinged with the first transmission assembly 200, and the connecting shaft 220 can drive the driving arm 230 to drive the second transmission assembly 300 to move upwards; a main shaft 400 hinged to the housing 100; the third transmission assembly 500 has one end disposed on the main shaft 400 and the other end hinged to the second transmission assembly 300, and the second transmission assembly 300 can drive the third transmission assembly 500 to swing upwards or downwards; a driving crank arm 600, one end of which is arranged on the main shaft 400 and the other end of which is hinged with an insulating pull rod; when the third transmission assembly 500 swings upward, the crank arm 600 is driven to swing to a side far away from the insulating pull rod, and when the third transmission assembly 500 swings downward, the crank arm 600 is driven to swing to a side close to the insulating pull rod.
According to the transmission structure of the first aspect of the embodiment of the utility model, at least the following beneficial effects are achieved: by the cooperation of the first transmission assembly 200, the second transmission assembly 300, the third transmission assembly 500 and the main shaft 400, the linear displacement of the insulating tie rod is converted into the rotation in the vertical direction, the displacement of the transmission mechanism in the linear direction is reduced in the horizontal direction, the surplus space of the housing 100 in the vertical direction is utilized, the size of the housing 100 in the horizontal direction is reduced, and the size of the housing 100 is reduced.
According to some embodiments of the present utility model, the first transmission assembly 200 further includes a bearing 240 and a dynamic seal 250, the bearing 240 is disposed on the bracket 210, the connecting shaft 220 is hinged to the bearing 240, the dynamic seal 250 is movably disposed on the housing 100 and is connected to the other end of the connecting shaft 220, and the dynamic seal 250 is disposed to ensure that the housing 100 can ensure a sealed state in the case that the connecting shaft 220 needs to rotate through the bearing 240.
According to some embodiments of the present utility model, the other end of the driving arm 230 is provided with a latch 231, the latch 231 is provided with a first ball 232, the second transmission assembly 300 includes a first knuckle bearing 310 and a second knuckle bearing 320 screw-coupled with the first knuckle bearing 310, the first knuckle bearing 310 is hinged with the first ball 232, the second knuckle bearing 320 is hinged with one end of the third transmission assembly 500, and two ball hinge structures are formed by the hinge of the first knuckle bearing 310 with the first ball 232 and the hinge of the second knuckle bearing 320 with the second ball 320, so that the degree of freedom of rotation is increased, and the interference problem during rotation is avoided.
According to some embodiments of the present utility model, the third transmission assembly 500 includes two first swing arms 510, one ends of the two first swing arms 510 are connected to the main shaft 400, the other ends are connected by screws, a second ball 520 is disposed on a stud of the screw between the two first swing arms 510, and the second ball 520 is hinged to the second ball 320 by a second knuckle bearing 320.
According to some embodiments of the present utility model, the driving crank arms 600 are arranged in three, so that three insulating pull rods can be simultaneously driven to displace together.
According to some embodiments of the present utility model, the second rocker arm 410 is further disposed on the main shaft 400, the support frame 110 is disposed on the housing 100, and the brake release spring 120 is disposed between the second rocker arm 410 and the support frame 110.
A circuit breaker according to an embodiment of the second aspect of the present utility model has the above transmission structure.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (7)
1. A transmission structure, comprising:
a housing;
the first transmission assembly comprises a bracket, a connecting shaft and a driving arm, wherein the bracket is arranged on the shell, the connecting shaft is hinged with the bracket, and one end of the driving arm is connected with one end, far away from the bracket, of the connecting shaft;
the second transmission assembly is hinged with the first transmission assembly, and the connecting shaft can drive the driving arm to drive the second transmission assembly to move upwards;
a spindle hinged to the housing;
one end of the third transmission component is arranged on the main shaft, the other end of the third transmission component is hinged with the second transmission component, and the second transmission component can drive the third transmission component to swing upwards or downwards;
one end of the driving crank arm is arranged on the main shaft, and the other end of the driving crank arm is hinged with the insulating pull rod;
when the third transmission assembly swings upwards, the driving crank arm swings to the side far away from the insulation pull rod, and when the third transmission assembly swings downwards, the driving crank arm swings to the side close to the insulation pull rod.
2. The transmission structure according to claim 1, wherein the first transmission assembly further comprises a bearing and a dynamic seal, the bearing is disposed on the bracket, the connecting shaft is hinged to the bearing, and the dynamic seal is movably disposed on the housing and is connected to the other end of the connecting shaft.
3. The transmission structure according to claim 1, wherein a latch is provided at the other end of the driving arm, a first ball is provided on the latch, the second transmission assembly includes a first knuckle bearing and a second knuckle bearing screwed with the first knuckle bearing, the first knuckle bearing is hinged to the first ball, and the second knuckle bearing is hinged to one end of the third transmission assembly.
4. A transmission structure according to claim 3, wherein the third transmission assembly comprises two first rocker arms, one ends of the two first rocker arms are connected with the main shaft, the other ends of the two first rocker arms are connected with each other through screws, second balls are arranged on studs of the screws between the two first rocker arms, and the second ball is hinged to the second ball through a second joint bearing.
5. A transmission structure according to any one of claims 1 to 4, wherein three drive arms are provided.
6. The transmission structure according to claim 5, wherein a second rocker arm is further arranged on the main shaft, a supporting frame is arranged on the shell, and a brake separating spring is arranged between the second rocker arm and the supporting frame.
7. A circuit breaker characterized by having a transmission structure as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223214226.0U CN219642688U (en) | 2022-12-01 | 2022-12-01 | Transmission structure and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223214226.0U CN219642688U (en) | 2022-12-01 | 2022-12-01 | Transmission structure and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219642688U true CN219642688U (en) | 2023-09-05 |
Family
ID=87810583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223214226.0U Active CN219642688U (en) | 2022-12-01 | 2022-12-01 | Transmission structure and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219642688U (en) |
-
2022
- 2022-12-01 CN CN202223214226.0U patent/CN219642688U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |