CN209766342U - DPN type circuit breaker - Google Patents
DPN type circuit breaker Download PDFInfo
- Publication number
- CN209766342U CN209766342U CN201920760343.6U CN201920760343U CN209766342U CN 209766342 U CN209766342 U CN 209766342U CN 201920760343 U CN201920760343 U CN 201920760343U CN 209766342 U CN209766342 U CN 209766342U
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- lock catch
- lever
- moving contact
- arc
- circuit breaker
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- 230000003116 impacting effect Effects 0.000 claims abstract description 3
- 230000000903 blocking effect Effects 0.000 claims description 18
- 230000003068 static effect Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a DPN type circuit breaker, include: the device comprises a shell, a lever, a jump buckle, a lock catch, two moving contacts, an electromagnetic release, a fixed contact, a lock catch reset torsion spring and two moving contact reset torsion springs; the lever is provided with a lock catch rotating shaft and a moving contact rotating shaft; the lock catch is sleeved on the periphery of the lock catch rotating shaft; the lock catch reset torsion spring is sleeved on the periphery of the lock catch rotating shaft, and two pins of the lock catch reset torsion spring are respectively connected with the lever and the lock catch; the moving contact is sleeved on the periphery of the moving contact rotating shaft; the moving contact reset torsion spring is sleeved on the periphery of the moving contact rotating shaft, and two pins of the moving contact reset torsion spring are respectively connected with the lever and the moving contact; the two moving contacts are coaxially and rotatably connected to the lever and arranged on two sides of the lever; the hasp includes: an arc-shaped arm; the arc-shaped arm penetrates through the area between the two moving contacts; the electromagnetic release is provided with a mandril for impacting one end of the arc-shaped arm. The utility model discloses an useful part lies in, can shorten mechanism off-time, reduces joule total mark energy value and improves breaking capacity.
Description
Technical Field
The utility model relates to a circuit breaker, concretely relates to DPN type circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. A circuit breaker generally includes a contact system, an arc extinguishing system, an operating mechanism, a trip unit, a case, and the like.
The DPN miniature circuit breaker is used for a single-phase residential line with 50Hz or 60Hz alternating current and 230V rated voltage, has a compact structure, has two poles (zero and live wires are cut off simultaneously) within 18mm width, and protects the overload and short circuit of an electric line.
The traditional DPN miniature circuit breaker can be tripped only by needing an electromagnetic trip to increase the tripping force, and the mechanism has long breaking time and poor breaking capability.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of prior art, the utility model provides a DPN type circuit breaker through hasp, moving contact, lever and hasp reset torsion spring's specific structure and mounting means, reduces the tripping force to shorten mechanism off-time, reduce joule total mark energy value and improve breaking capacity.
In order to achieve the above object, the utility model adopts the following scheme:
A DPN type circuit breaker comprising: the device comprises a shell, a lever, a jump buckle, a lock catch, two moving contacts, an electromagnetic release, a fixed contact, a lock catch reset torsion spring and two moving contact reset torsion springs; the lever is rotationally connected to the shell; the jump buckle, the lock catch and the two moving contacts are all rotationally connected to the lever; the electromagnetic release and the static contact are arranged in the shell; the lever is provided with a lock catch rotating shaft and a moving contact rotating shaft; the lock catch is sleeved on the periphery of the lock catch rotating shaft; the lock catch reset torsion spring is sleeved on the periphery of the lock catch rotating shaft, and two pins of the lock catch reset torsion spring are respectively connected with the lever and the lock catch; the moving contact is sleeved on the periphery of the moving contact rotating shaft; the moving contact reset torsion spring is sleeved on the periphery of the moving contact rotating shaft, and two pins of the moving contact reset torsion spring are respectively connected with the lever and the moving contact; the two moving contacts are coaxially and rotatably connected to the lever and arranged on two sides of the lever; the hasp includes: an arc-shaped arm; the arc-shaped arm penetrates through the area between the two moving contacts; the electromagnetic release is provided with a mandril for impacting one end of the arc-shaped arm.
Furthermore, the lock catch is provided with a blocking rib for locking the jump buckle; the blocking ribs and the arc-shaped arms are positioned on two sides of a rotating axis of the lock catch relative to the lever.
further, the DPN type circuit breaker further includes: a lock catch body; the lock catch body is rotationally connected to the lever; the blocking rib, the arc-shaped arm and the lock catch body are integrally formed; keep off muscle and arc arm and all outwards extend from the hasp body.
Further, the arcuate arm extends outwardly from the latch body and toward the electromagnetic release.
Further, the blocking rib extends outwards from the lock catch body and towards the jump buckle.
Further, the blocking ribs are arc-shaped.
Further, the blocking rib and the arc-shaped arm both extend from the lock catch body in the clockwise direction.
Furthermore, one end of the blocking rib, which is far away from the lock catch body, is provided with a locking part for locking the jump buckle; the ratio of the distance from one end of the arc-shaped arm far away from the lock catch body to the rotation axis of the lock catch body to the distance from the locking part to the rotation axis of the lock catch body is more than or equal to 1.5 and less than or equal to 4.
Further, the ratio of the distance from one end of the arc-shaped arm far away from the lock catch body to the rotation axis of the lock catch body to the distance from the locking part to the rotation axis of the lock catch body is more than or equal to 1.8 and less than or equal to 2.5.
Furthermore, the lever is provided with a limiting block for limiting the rotating position of the moving contact relative to the lever; a pin of the moving contact reset torsion spring contacts the limiting block; the DPN type circuit breaker also comprises a pin shaft which is used for enabling the lever and the shell to form rotary connection; the limiting block is provided with a pin hole for the pin shaft to pass through.
the utility model discloses an useful part lies in, through hasp, moving contact, lever and hasp reset torsion spring's specific structure and mounting means, reduces the tripping force to shorten mechanism off-time, reduce joule total mark energy value and improve breaking capacity.
The lever plays a role in transmission and moving contact support, and simultaneously supports two moving contacts without an additional contact support. The volume is reduced, and further the lock catch is reduced to enable the lock catch to be close to the electromagnetic release, so that rapid breaking is facilitated.
The electromagnetic release can push the arc-shaped arm to quickly separate the jump buckle with small force. The arc arm and the special structure of the blocking rib enable the locking part to be separated from the jump buckle quickly when the arc arm receives impact, and therefore breaking capacity is improved.
Compared with other reset structures, the lock catch reset torsion spring and the moving contact reset torsion spring reduce the volume of the operation structure.
Drawings
fig. 1 is a cross-sectional view of a DPN type circuit breaker of the present invention;
Fig. 2 is a schematic view of a part of the structure of the DPN type circuit breaker of fig. 1, showing a state in which a movable contact and a fixed contact are closed;
Fig. 3 is a schematic view of another state of the structure of fig. 1, showing the movable contact and the stationary contact disconnected;
fig. 4 is a schematic diagram of a lever, a movable contact, a latch return spring, a movable contact return spring of the DPN circuit breaker of fig. 1;
FIG. 5 is a schematic view of the lever of FIG. 4;
Fig. 6 is a schematic view of the latch of fig. 4.
The breaker comprises a circuit breaker 100, a shell 10, a lever 20, a latch rotating shaft 21, a movable contact rotating shaft 22, a limiting block 23, a pin hole 231, a trip 30, a latch 40, an arc-shaped arm 41, a blocking rib 42, a locking part 421, a latch body 43, a movable contact 50, an electromagnetic release 60, a mandril 61, a static contact 70, a latch reset torsion spring 80 and a movable contact reset torsion spring 90.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6, a DPN type circuit breaker 100 includes: the device comprises a shell 10, a lever 20, a trip buckle 30, a lock 40, two movable contacts 50, an electromagnetic release 60, a fixed contact 70, a lock reset torsion spring 80 and two movable contact reset torsion springs 90.
the lever 20 is rotatably connected to the housing 10. The jumper 30, the latch 40 and the two movable contacts 50 are all rotatably connected to the lever 20.
The axes of rotation of the jumper 30, the lock 40 and the movable contact 50 are parallel and do not coincide with each other. The rotation axes of the trip 30, the latch 40 and the movable contact 50 refer to the rotation axes of the trip 30, the latch 40 and the movable contact 50, respectively, with respect to the lever 20. The rotation axis of the lever 20 refers to a rotation axis of the lever 20 with respect to the housing 10. The rotation axes of the trip device 30, the lock 40 and the movable contact 50 are parallel to the rotation axis of the lever 20 and are not coincident. The DPN type circuit breaker 100 further includes a link and a handle. The connecting rod connects the handle and the jump buckle 30.
As a specific embodiment, the lever 20 is provided with a latch rotating shaft 21 and a movable contact rotating shaft 22. The lock 40 is fitted around the lock shaft 21. The latch restoring torsion spring 80 is sleeved on the periphery of the latch rotating shaft 21, and two pins of the latch restoring torsion spring 80 are respectively connected with the lever 20 and the latch 40. The movable contact 50 is sleeved on the periphery of the movable contact rotating shaft 22. The moving contact reset torsion spring 90 is sleeved on the periphery of the moving contact rotating shaft 22, and two pins of the moving contact reset torsion spring 90 are respectively connected with the lever 20 and the moving contact 50. The two movable contacts 50 are coaxially and rotatably connected to the lever 20 and are disposed at both sides of the lever 20.
An electromagnetic trip 60 and a stationary contact 70 are disposed within the housing 10. The electromagnetic release 60 is provided with a jack rod 61. The ejector pin 61 is used to strike the latch 40. Specifically, the lock 40 includes: an arc-shaped arm 41. The arc-shaped arm 41 passes through the region between the two movable contacts 50. The post rod 61 strikes the arc arm 41 to push the latch 40 to move. Specifically, the jack 61 strikes one end of the arc arm 41.
as a preferred embodiment, the lock 40 is provided with a stopper rib 42 for locking the jump buckle 30. The stop rib 42 and the arc-shaped arm 41 are located on both sides of the rotational axis of the latch 40 with respect to the lever 20. The DPN type circuit breaker 100 further includes: a latch body 43. The latch body 43 is pivotally connected to the lever 20. The stopper rib 42, the arc arm 41 and the latch body 43 are integrally formed. The stop rib 42 and the arc-shaped arm 41 both extend outwardly from the latch body 43. Specifically, the arcuate arm 41 extends outwardly from the latch body 43 and toward the electromagnetic release 60. The blocking rib 42 extends outward from the latch body 43 and toward the jump latch 30. The retaining rib 42 is arcuate. The stopper rib 42 and the arc-shaped arm 41 both extend in the clockwise direction from the latch body 43.
as a preferred embodiment, one end of the rib 42 away from the lock body 43 is provided with a locking portion 421 for locking the jump buckle 30. One end of the arc-shaped arm 41 away from the latch body 43 is used for contacting with the ejector rod 61.
As a specific embodiment, the ratio of the distance from the end of the arc-shaped arm 41 away from the latch body 43 to the rotational axis of the latch body 43 to the distance from the locking portion 421 to the rotational axis of the latch body 43 is 1.5 or more and 4 or less. The ratio of the distance from one end of the arc-shaped arm 41 away from the latch body 43 to the rotational axis of the latch body 43 to the distance from the locking portion 421 to the rotational axis of the latch body 43 is 1.8 or more and 2.5 or less. The arc-shaped arm 41 and the locking portion 421 constitute a labor-saving lever structure, and separation can be achieved without a large force.
As a preferred embodiment, the lever 20 is provided with a stop 23 for limiting the rotational position of the movable contact 50 with respect to the lever 20. The pin of the moving contact reset torsion spring 90 contacts the limit block 23. The DPN type circuit breaker 100 further includes a pin for rotatably coupling the lever 20 and the case 10. The stopper 23 is formed with a pin hole 231 through which the pin shaft passes.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (10)
1. A DPN type circuit breaker, characterized by comprising: the device comprises a shell, a lever, a jump buckle, a lock catch, two moving contacts, an electromagnetic release, a fixed contact, a lock catch reset torsion spring and two moving contact reset torsion springs; the lever is rotationally connected to the housing; the jump buckle, the lock catch and the two moving contacts are all rotationally connected to the lever; the electromagnetic release and the static contact are arranged in the shell; the lever is provided with a lock catch rotating shaft and a moving contact rotating shaft; the lock catch is sleeved on the periphery of the lock catch rotating shaft; the lock catch reset torsion spring is sleeved on the periphery of the lock catch rotating shaft, and two pins of the lock catch reset torsion spring are respectively connected with the lever and the lock catch; the moving contact is sleeved on the periphery of the moving contact rotating shaft; the moving contact reset torsion spring is sleeved on the periphery of the moving contact rotating shaft, and two pins of the moving contact reset torsion spring are respectively connected with the lever and the moving contact; the two moving contacts are coaxially and rotatably connected to the lever and arranged on two sides of the lever; the lock catch comprises: an arc-shaped arm; the arc-shaped arm penetrates through the area between the two movable contacts; the electromagnetic release is provided with a mandril for impacting one end of the arc-shaped arm.
2. The DPN type circuit breaker according to claim 1,
The lock catch is provided with a blocking rib for locking the jump buckle; the blocking rib and the arc-shaped arm are positioned on two sides of the rotating axis of the lock catch relative to the lever.
3. the DPN type circuit breaker according to claim 2,
the DPN type circuit breaker further includes: a lock catch body; the lock catch body is rotationally connected to the lever; the blocking rib, the arc-shaped arm and the lock catch body are integrally formed; the blocking ribs and the arc-shaped arms extend outwards from the lock catch body.
4. The DPN type circuit breaker according to claim 3,
The arcuate arm extends outwardly from the latch body and toward the electromagnetic release.
5. The DPN type circuit breaker according to claim 3,
the blocking rib extends outwards from the lock catch body and towards the jump buckle.
6. the DPN type circuit breaker according to claim 3,
The blocking ribs are arc-shaped.
7. The DPN type circuit breaker according to claim 6,
The blocking rib and the arc-shaped arm extend clockwise from the lock catch body.
8. The DPN type circuit breaker according to claim 6,
One end of the blocking rib, which is far away from the lock catch body, is provided with a locking part for locking the jump buckle; the ratio of the distance from one end of the arc-shaped arm far away from the lock catch body to the rotation axis of the lock catch body to the distance from the locking part to the rotation axis of the lock catch body is more than or equal to 1.5 and less than or equal to 4.
9. the DPN type circuit breaker according to claim 8,
the ratio of the distance from one end of the arc-shaped arm far away from the lock catch body to the rotation axis of the lock catch body to the distance from the locking part to the rotation axis of the lock catch body is more than or equal to 1.8 and less than or equal to 2.5.
10. The DPN type circuit breaker according to claim 1,
The lever is provided with a limiting block for limiting the rotating position of the moving contact relative to the lever; the pin of the moving contact reset torsion spring contacts the limiting block; the DPN type circuit breaker also comprises a pin shaft which is used for enabling the lever and the shell to form rotary connection; the limiting block is provided with a pin hole for the pin shaft to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760343.6U CN209766342U (en) | 2019-05-24 | 2019-05-24 | DPN type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760343.6U CN209766342U (en) | 2019-05-24 | 2019-05-24 | DPN type circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209766342U true CN209766342U (en) | 2019-12-10 |
Family
ID=68761791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920760343.6U Active CN209766342U (en) | 2019-05-24 | 2019-05-24 | DPN type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209766342U (en) |
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2019
- 2019-05-24 CN CN201920760343.6U patent/CN209766342U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325600 No. 18, Sha Hung Road, North white elephant Town, Yueqing City, Wenzhou, Zhejiang. Patentee after: Zhejiang Chuangqi Electric Co.,Ltd. Address before: 325600 No. 18, Sha Hung Road, North white elephant Town, Yueqing City, Wenzhou, Zhejiang. Patentee before: ZHEJIANG CHUANGQI ELECTRIC Co.,Ltd. |