CN210897163U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN210897163U CN210897163U CN201921501154.3U CN201921501154U CN210897163U CN 210897163 U CN210897163 U CN 210897163U CN 201921501154 U CN201921501154 U CN 201921501154U CN 210897163 U CN210897163 U CN 210897163U
- Authority
- CN
- China
- Prior art keywords
- contact
- action
- push rod
- connecting arm
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A circuit breaker comprises a shell, wherein a release, an action transmission part and an operating mechanism are arranged in the shell; the tripper has the push rod that can remove, the action driving medium rotates and makes operating device dropout cutting circuit in the casing under the effect of push rod, and the push rod has first contact site, the second contact site sliding contact who sets up on first contact site and the action driving medium, and the second contact site includes trigger part and spacing portion that does not simultaneously contact with first contact site, first contact site drives the action driving medium with the contact of trigger part and begins to rotate, and the action driving medium triggers operating device dropout cutting circuit, then first contact site and spacing portion contact, and first contact site prevents through keeping off spacing portion that the action driving medium resets before the push rod resets. The utility model discloses effectively reduced the required space of action driving medium in the casing, avoided producing the problem that operating device postponed the action simultaneously.
Description
Technical Field
The utility model relates to a low-voltage apparatus, concretely relates to circuit breaker.
Background
And the action transmission part of the circuit breaker is used for transmitting the state of the tripper to the operating mechanism of the circuit breaker so as to enable the operating mechanism to trip and power off. The circuit breaker comprises various releases, such as an instantaneous release, an undervoltage release, a shunt release and the like, wherein the instantaneous release has a long stroke, and the other releases have short strokes, so that the cooperation of the release and an action transmission member generally adopts the following two technical schemes: in the first scheme, as shown in fig. 8, the instantaneous release with a long stroke is arranged at a position, far away from a rotating fulcrum, of the action transmission member, the release with a short movement stroke is arranged at a position, close to the rotating fulcrum, of the action transmission member, and the tail end of the action transmission member swings and displaces greatly so as to match the long stroke of the instantaneous release, so that in order to match the release with a long stroke, the rotation angle, the movement stroke or the length of the action transmission member needs to be increased, and the action transmission member needs to occupy a large space; in a second aspect, as shown in fig. 9, the action transmission member is translatably disposed below the trip, in order to take account of the trip with a short stroke, the trip with a long stroke needs to move by a section of idle stroke h1 before contacting the action transmission member, and h2 is an effective distance for the action transmission member to trigger the operating mechanism, so that the time for the trip with a long stroke to contact the action transmission member is delayed, or a section of idle stroke is disposed between the action transmission member and the operating mechanism, so that the tripping and power failure of the operating mechanism are delayed. Therefore, in the existing circuit breaker, the structure and action matching relation between the tripper and the action transmission part needs to occupy larger space, so that the structure of the circuit breaker is not compact, or the tripping delay is caused, so that the circuit breaker cannot respond to circuit faults in time.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a compact structure, circuit breaker that the reliability is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circuit breaker comprises a shell, wherein a release, an action transmission part and an operating mechanism are arranged in the shell; the tripper has the push rod that can remove, the action driving medium rotates and makes operating device dropout cutting circuit in the casing under the effect of push rod, and the push rod has first contact site, the second contact site sliding contact who sets up on first contact site and the action driving medium, and the second contact site includes trigger part and spacing portion that does not simultaneously contact with first contact site, first contact site drives the action driving medium with the contact of trigger part and begins to rotate, and the action driving medium triggers operating device dropout cutting circuit, then first contact site and spacing portion contact, and first contact site prevents through keeping off spacing portion that the action driving medium resets before the push rod resets.
Further, the second contact part is a step structure formed on the action transmission part, an upper step surface of the step structure is a trigger part, and a lower step surface of the step structure is a limiting part.
Further, the upper step surface is provided as an inclined surface inclined toward the lower step surface.
Furthermore, the second contact part is formed by bending the lower part of the action transmission part, and the included angle between the connecting surface connected with the upper step surface and the lower step surface is a right angle; the upper end of the push rod is provided with a top plate, one side of the top plate, which is close to the action transmission part, is a first contact part, the edge of the lower step surface is provided with a limiting groove used for penetrating the push rod, and the inner diameter of the limiting groove is smaller than the outer diameter of the first contact part.
Furthermore, the action transmission piece is transversely arranged in the middle of the shell and comprises a rotating arm, a first connecting arm and a second connecting arm which are integrally formed; the rotating arm is rotatably supported in the shell through being connected with the first connecting arm and the second connecting arm, the rotating arm is provided with a second contact part, and the first connecting arm and the second connecting arm are both provided with rotating fulcrums for supporting the movement transmission piece to rotate.
Furthermore, a fifth contact part used for triggering the operating mechanism to trip is further arranged on the rotating arm, a third contact part used for being connected with the second tripping unit is arranged on the first connecting arm, and a fourth contact part used for being connected with the fault signal contact is arranged on the contact end of the second connecting arm.
Furthermore, two ends of the rotating arm are respectively connected to the middle parts of the first connecting arm and the second connecting arm, the second contact part is a step structure formed by a bulge positioned at the lower part of one side of the rotating arm, and the fifth contact part is a rectangular bulge arranged at the top of the rotating arm close to one side of the second connecting arm; the first connecting arm and the second connecting arm are respectively provided with a connecting end for arranging a rotating fulcrum and a contact end lower than the connecting end; the contact end of the first connecting arm is provided with a first inclined surface and a third contact part, the highest point of the first inclined surface is flush with the top of the rotating arm, the third contact part is positioned at the end part of the contact end, and the third contact part is a bulge which is higher than the lowest point of the first inclined surface and protrudes out of the side wall of the first connecting arm; the contact end of the second connecting arm is provided with a fourth contact part and a second inclined plane, the fourth contact part is formed by the end part of the contact end, and the highest point of the second inclined plane is flush with the top of the rotating arm; the first contact part, the second contact part, the third contact part and the fourth contact part are all located on the same side of the shell.
Furthermore, the action transmission part is also provided with an installation connecting groove; the rotating arm of the action transmission member is provided with a plurality of second contact parts, the second contact parts are separated by a separation structure on the rotating arm, and each second contact part corresponds to a push rod of a release.
Furthermore, the shell also comprises a connecting terminal, a double-gold component and an arc extinguish chamber; the wiring terminals are respectively arranged on two sides of the shell far away from the action transmission part, and a bimetallic assembly is arranged between the tripper and the wiring terminal on the same side; contact mechanisms are arranged below two sides of the action transmission part and comprise a static contact component and a moving contact component matched with the static contact component; the arc extinguish chamber is arranged below the contact mechanism, and a plurality of arc extinguish grid pieces are arranged in the arc extinguish chamber in a stacked mode; the second tripping unit is arranged outside the shell and enables the operating mechanism to trip and power off through the action transmission member.
Furthermore, a return spring is arranged in the shell, and the return spring drives the action transmission member to reset after a push rod of the release resets.
The utility model discloses a circuit breaker compares with current circuit breaker, will have the terminal trigger function of action driving medium and spacing function separation, promptly through setting up trigger portion and spacing portion on the second contact site, make the release push rod slide along the second contact site of action driving medium, and make the push rod successively contact the trigger portion and the spacing portion of dislocation set on the second contact site, this kind of trigger function and spacing function phase separation's structure has reduced the displacement of action driving medium on the push rod, effectively reduced the required space of action driving medium in the casing. Meanwhile, the rotation angle and the tail end displacement of the improved action transmission member are close to the movement stroke of the second tripping unit, idle strokes for coordinating all the trips are not needed to be arranged between the action transmission member and the push rod of the tripper, the sliding distance of the push rod at the second contact part is controlled only by adjusting the distance between the trigger part and the limiting part, the problem that the action of the operating mechanism is delayed is avoided, but in order to prevent the action transmission member from mistakenly triggering the operating structure under the vibration environment, a very small idle stroke can be designed between the tripper and the action transmission rod or between the action transmission member and the operating mechanism.
In addition, a third contact part connected with the second tripping unit, a fourth contact part connected with the fault signal contact and a fifth contact part for triggering the operation mechanism to rotate are arranged on the improved action transmission member, so that multiple function sets of the action transmission member are realized, and the improved action transmission member is suitable for a circuit breaker with a compact design.
Drawings
Fig. 1 is a schematic structural diagram of the circuit breaker of the present invention;
fig. 2 is a schematic view of the initial position of the actuating member of the circuit breaker of the present invention;
fig. 3 is a schematic view of the stop position of the actuating transmission member of the circuit breaker of the present invention;
fig. 4 is a schematic position diagram of a second trip unit of the present invention;
FIG. 5 is a top view of the motion transmitting member of the present invention;
FIG. 6 is a schematic view of the structure of the actuating member of the present invention;
FIG. 7 is a schematic view of the rotation of the motion transmitting member of the present invention;
fig. 8 is a schematic structural diagram of a release and a motion transmission member according to a first prior art;
fig. 9 is a schematic structural diagram of a release and an action transmission member of a second prior art;
fig. 10 is a schematic diagram comparing the present invention with the first embodiment;
fig. 11 is a schematic diagram comparing the present invention with the second embodiment.
Detailed Description
The following describes the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 11. The circuit breaker of the present invention is not limited to the description of the following embodiments.
A low-voltage circuit breaker comprises a shell 1, wherein a release 2, an action transmission piece 3 and an operating mechanism 5 are arranged in the shell 1; the tripper 2 is provided with a movable push rod 21, the action transmission member 3 rotates in the shell 1 under the action of the push rod 21 and enables the operating mechanism 5 to trip a cut-off circuit, the push rod 21 is provided with a first contact part 211, the first contact part 211 is in sliding contact with a second contact part 4 arranged on the action transmission member 3, the second contact part 4 comprises a trigger part 41 and a limiting part 42 which are not in contact with the first contact part 211 at the same time, the first contact part 211 is in contact with the trigger part 41 to drive the action transmission member 3 to start rotating, the action transmission member 3 triggers the operating mechanism 5 to trip the cut-off circuit, then the first contact part 211 is in contact with the limiting part 42, and the first contact part 211 prevents the action transmission member 3 from resetting before the push rod 21 resets by abutting against the limiting part 42.
The utility model discloses a circuit breaker compares with current circuit breaker, separate the terminal trigger function and the limit function of original action driving medium 3, set up trigger part 41 and spacing 42 on second contact site 4 respectively, and slide the action driving medium 3 end in the original circuit breaker along push rod 21 and change into push rod 21 along the second contact site 4 slip of protrusion in action driving medium 3 lateral wall, the displacement of action driving medium 3 on push rod 21 has been reduced to this kind of protrusion action driving medium 3 lateral wall and function phase separation's structure, effectively reduced the required space of action driving medium 3 in casing 1, if the distance of action driving medium 3 after the improvement is nearer with rotation fulcrum 3a, the rotation angle of action driving medium 3 end has been reduced to protruding second contact site 4; if the improved motion transmission member 3 is far away from the rotation pivot 3a, the protruding second contact portion 4 shortens the displacement distance of the end of the motion transmission member 3. Meanwhile, the rotation angle and the tail end displacement of the improved action transmission member 3 are close to the movement stroke of the second tripping unit 8, no idle stroke for coordinating each tripping device is required to be arranged between the action transmission member 3 and the push rod 21, and the sliding distance of the push rod 21 in the second contact part 4 is controlled only by adjusting the distance between the triggering part 41 and the limiting part 42, so that the problem that the action of the operating mechanism 5 is delayed is avoided, but in order to prevent the action transmission member 3 from mistakenly triggering the operating structure 5 in a vibration environment, a small idle stroke can be designed between the push rod 21 of the tripping device 2 and the action transmission member 3 or between the action transmission member 3 and the operating mechanism 5.
As shown in fig. 1-4, in a low-voltage circuit breaker, a release 2, an action transmission member 3, an operating mechanism 5, a connection terminal 6, a bimetal assembly 7, an arc extinguish chamber and a contact mechanism are arranged in a housing 1 of the circuit breaker, wherein the release 2 is an instantaneous release in this embodiment; the tripper 2 is positioned at one side of the action transmission member 3, as shown in fig. 1 and 4, the wiring terminals 6 are respectively arranged at two sides of the shell 1 far away from the action transmission member 3, a bimetal component 7 is arranged between the wiring terminals 6 at the same side as the tripper 2, and the bimetal component 7 is deformed by heat to enable the operating mechanism 5 to be tripped and cut off the power; a contact mechanism is arranged below two sides of the action transmission part 3, and comprises a static contact component and a moving contact component matched with the static contact component; the arc extinguishing chamber is arranged below the contact mechanism, and a plurality of arc extinguishing grid pieces are stacked in the arc extinguishing chamber. A second tripping unit 8 can be further arranged on one side outside the shell 1, and the second tripping unit 8 enables the operating mechanism 5 to trip and power off through the action transmission member 3. The second tripping unit 8 is an undervoltage tripping device, a shunt tripping device, an overvoltage tripping device, or other tripping devices, and in this embodiment, is an undervoltage tripping device.
As shown in fig. 2-3, the trip unit 2 is located at one side of the action transmission member 3, the movable push rod 21 of the trip unit 2 has a first contact portion 211, the first contact portion 211 is in sliding contact with a second contact portion 4 protruding from a side wall of the action transmission member 3, when a short-circuit current occurs in the circuit, the push rod 21 of the trip unit 2 moves, the first contact portion 211 contacts with a trigger portion 41 on the second contact portion 4, the push rod 21 drives the action transmission member 3 to rotate around a rotation fulcrum 3a of the action transmission member 3 in the housing 1, the action transmission member 3 triggers the operating mechanism 5 to trip and cut off the circuit, the first contact portion 211 sequentially slides along a connection surface 43 between the trigger portion 41 and the limit portion 42, when the first contact portion 211 slides to the limit portion 42 on the second contact portion 4, the first contact portion 211 prevents the action transmission member 3 from being reset before the push rod 21 resets, after the circuit is disconnected due to a short-circuit fault, the push rod 21 resets after no short-circuit current exists in the release 2, and the action transmission member 3 resets.
In order to realize that the first contact portion 211 is not in contact with the triggering portion 41 and the limiting portion 42 of the second contact portion 4 at the same time, the second contact portion 4 is preferably a stepped structure formed on the motion transmission member 3, an upper stepped surface of the stepped structure is used as the triggering portion 41, and a lower stepped surface of the stepped structure is used as the limiting portion 42. The upper step surface is preferably provided as an inclined surface inclined toward the lower step surface, thereby ensuring that the first contact portion 211 can smoothly slide toward the lower step surface. In order to reduce the space occupation and the connection stability between the second contact portion 4 and the motion transmission member 3, the lower portion of the motion transmission member 3 is preferably integrally bent to form a step structure, and the step structure and the motion transmission member 3 have the same thickness; meanwhile, in consideration of the connection stability and the fitting degree of the first contact portion 211 and the stopper portion 42, the angle between the connection surface 43 connected to the upper step surface and the lower step surface is preferably a right angle, but may be any other angle. In order to better match the first contact part 211 with the second contact part 4 and to make the matching structure of the trip unit 2 and the action transmission member 3 more compact, a top plate 23 with a diameter larger than that of the rod body is arranged at the upper end of the push rod 21, a limit groove 421 for penetrating through the rod body of the push rod 21 is arranged at the edge of the lower step surface, the inner diameter of the limit groove 421 is smaller than the outer diameter of the first contact part 211, and at the moment, one side of the top plate 23 close to the action transmission member 3 is used as the first contact part 211 and is always positioned above the limit groove 421.
As shown in fig. 1, 5 and 6, the motion transmission member 3 is transversely disposed in the middle of the housing 1, and the motion transmission member 3 specifically includes an integrally formed rotating arm 33, a first connecting arm 31 and a second connecting arm 32; the rotating arm 33 is rotatably supported in the housing 1 by being connected with the first connecting arm 31 and the second connecting arm 32, and the rotating arm 33 is provided with a second contact part 4 and a fifth contact part 331 for triggering the operating mechanism 5 to trip; the first connecting arm 31 and the second connecting arm 32 are both provided with a rotating fulcrum 3a for supporting the action transmission member 3 to rotate, the first connecting arm 31 is provided with a third contact portion 311 for connecting with the second tripping unit 8, the contact end of the second connecting arm 32 is provided with a fourth contact portion 321 for connecting with a fault signal contact, the fault signal contact is provided with a passive trigger rod extending into the lower side of the fourth contact portion 321, and when the action transmission member 3 acts, the passive trigger rod is pressed to act, so that the fault signal contact feeds back a fault signal.
The two ends of the rotating arm 33 are respectively connected to the middle parts of the first connecting arm 31 and the second connecting arm 32, the second contact part 4 is in a step structure formed by a protrusion at the lower part of one side of the rotating arm 33, the fifth contact part 331 is a rectangular protrusion arranged at the top part of the rotating arm 33 close to one side of the second connecting arm 32, the back surface of the fifth contact part 331 is in contact with the operating mechanism, and after the action transmission member 3 is triggered to rotate, the back surface of the fifth contact part 331 drives the operating mechanism to act and trip; the first connecting arm 31 and the second connecting arm 32 are both provided with a connecting end for arranging the rotating fulcrum 3a and a contact end, and in order to save space in the shell 1, the contact end is preferably lower than the connecting end; the contact end of the first connecting arm 31 is provided with a first inclined surface 312 and a third contact part 311, the highest point of the first inclined surface 312 is flush with the top of the rotating arm 33, the lowest point of the first inclined surface 312 is flush with the top of the second contact part 4, the third contact part 311 is positioned at the end part of the contact end, the third contact part 311 is a bulge which is higher than the lowest point of the first inclined surface 312 and is bulged out of the side wall of the first connecting arm 31, the second tripping unit 8 is positioned outside the shell 1 close to the third contact part 311, and the operating mechanism 5 is tripped to cut off the circuit by operating the operating action transmission member 3 through the third contact part 311 to rotate; the contact end of the second connecting arm 32 is provided with a fourth contact portion 321 and a second inclined surface 322, the fourth contact portion 321 is formed by the end portion of the contact end, the highest point of the second inclined surface 322 is flush with the top of the rotating arm 33, the lowest point of the second inclined surface 322 is higher than the top of the second contact portion 4, and the first inclined surface 312 and the second inclined surface 322 are beneficial to maintaining the connection stability of the contact end with the rotating arm 33 and the connection end; the first contact portion 211, the second contact portion 4, the third contact portion 311 and the fourth contact portion 321 are located on the same side of the casing 1, and a plurality of contact portions are integrated on the action transmission member 3, so that multiple functions are achieved, and the circuit breaker is suitable for designing a compact circuit breaker.
As shown in fig. 2 and 5, the actuating transmission member 3 is further provided with an installation connection groove 34, and a return spring is installed in the installation connection groove 34 and located between the actuating transmission member 3 and the operating mechanism 5. The return spring is preferably a compression spring, and the compression spring is used for driving the action transmission member 3 to reset after the release 2 resets; in the structure without the installation connecting groove 34 and the pressure spring, the action transmission piece 3 can be driven by the operating mechanism 5 to reset; the rotating arm 33 of the actuating transmission member 3 is provided with a plurality of second contact portions 4, the plurality of second contact portions 4 are separated by a separating structure 35 on the rotating arm 33, each second contact portion 4 corresponds to one push rod 21 of one trip unit 2, in the embodiment, the separating structure 35 divides the actuating transmission member 3 into three identical parts, each part corresponds to one push rod 21 of one trip unit 2, and the separating structure 35 shown in the figure is a partition plate with a downward inclined surface.
The tripper 2 specifically comprises a coil framework, an electromagnetic coil 22 wound outside the coil framework, a movable iron core arranged in the coil framework, a push rod 21, a static iron core and a counter-force spring, wherein a through hole is formed in the coil framework, the static iron core is fixed at one end of the through hole, the movable iron core is arranged at the other end of the through hole in a sliding manner, one end of the push rod 21 extends out of the static iron core, the other end of the push rod 21 penetrates through the middle part of the static iron core and is connected with the movable iron core, and the push rod 21 is in sliding fit with the static iron core; the reaction spring is sleeved on the push rod 21, and two ends of the reaction spring are respectively connected with the movable iron core and the static iron core.
Referring to fig. 10, compared with the first solution of the present invention, the required rotation angle θ 2 and displacement distance S2 of the motion transmission member 3 of the present invention are significantly smaller than the rotation angle θ 1 and displacement distance S1 of the motion transmission member 3' of the first solution, and are significantly smaller; referring to fig. 11, compared with the second embodiment of the present invention, the displacement distance S2 of the motion transmission member 3 of the present invention is significantly smaller than the displacement distance S3 of the motion transmission member 3 ″ of the second embodiment of the present invention.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A circuit breaker comprises a shell (1), wherein a release (2), an action transmission part (3) and an operating mechanism (5) are arranged in the shell (1); the tripper (2) is provided with a movable push rod (21), the action transmission member (3) rotates in the shell (1) under the action of the push rod (21) and enables the operating mechanism (5) to trip and cut off a circuit, and the tripper is characterized in that: push rod (21) have first contact site (211), protrusion on first contact site (211) and action driving medium (3) second contact site (4) sliding contact that the lateral wall set up, second contact site (4) including trigger part (41) and spacing portion (42) with first contact site (211) contact simultaneously, first contact site (211) and trigger part (41) contact drive action driving medium (3) begin to rotate, and action driving medium (3) trigger operating device (5) dropout cutting off circuit, then first contact site (211) and spacing portion (42) contact, and first contact site (211) prevent action driving medium (3) through keeping out spacing portion (42) and reset before push rod (21) resets.
2. The circuit breaker of claim 1, wherein: the second contact part (4) is a step structure formed on the action transmission member (3), the upper step surface of the step structure is a trigger part (41), and the lower step surface of the step structure is a limiting part (42).
3. The circuit breaker of claim 2, wherein: the upper step surface is an inclined surface inclined towards the lower step surface.
4. The circuit breaker of claim 3, wherein: the second contact part (4) is formed by bending the lower part of the action transmission part (3), and the included angle between the connecting surface (43) connected with the upper step surface and the lower step surface is a right angle; the upper end of push rod (21) is equipped with roof (23), roof (23) are close to action driving medium (3) one side and are first contact site (211), the edge of lower step face is provided with spacing groove (421) that are used for passing push rod (21), the internal diameter of spacing groove (421) is less than the external diameter of first contact site (211).
5. The circuit breaker according to any one of claims 1 to 4, wherein: the action transmission piece (3) is transversely arranged in the middle of the shell (1), and the action transmission piece (3) comprises a rotating arm (33), a first connecting arm (31) and a second connecting arm (32) which are integrally formed; the rotating arm (33) is connected with the first connecting arm (31) and the second connecting arm (32) and rotatably supported in the shell (1), a second contact part (4) is arranged on the rotating arm (33), and the first connecting arm (31) and the second connecting arm (32) are both provided with a rotating fulcrum (3a) used for supporting the movement transmission piece (3) to rotate.
6. The circuit breaker of claim 5, wherein: the rotating arm (33) is further provided with a fifth contact part (331) used for triggering the operating mechanism (5) to trip, the first connecting arm (31) is provided with a third contact part (311) used for being connected with the second tripping unit (8), and the contact end of the second connecting arm (32) is provided with a fourth contact part (321) used for being connected with the fault signal contact.
7. The circuit breaker of claim 6, wherein: the two ends of the rotating arm (33) are respectively connected to the middle parts of the first connecting arm (31) and the second connecting arm (32), the second contact part (4) is of a step structure formed by a protrusion positioned at the lower part of one side of the rotating arm (33), and the fifth contact part (331) is a rectangular protrusion arranged at the top of the rotating arm (33) close to one side of the second connecting arm (32); the first connecting arm (31) and the second connecting arm (32) are respectively provided with a connecting end for arranging a rotating fulcrum (3a) and a contact end lower than the connecting end; the contact end of the first connecting arm (31) is provided with a first inclined surface (312) and a third contact part (311), the highest point of the first inclined surface (312) is flush with the top of the rotating arm (33), the third contact part (311) is positioned at the end part of the contact end, and the third contact part (311) is a bulge which is higher than the lowest point of the first inclined surface (312) and protrudes out of the side wall of the first connecting arm (31); the contact end of the second connecting arm (32) is provided with a fourth contact part (321) and a second inclined surface (322), the fourth contact part (321) is formed by the end part of the contact end, and the highest point of the second inclined surface (322) is flush with the top of the rotating arm (33); the first contact part (211), the second contact part (4), the third contact part (311) and the fourth contact part (321) are all located on the same side of the shell (1).
8. The circuit breaker of claim 5, wherein: the action transmission piece (3) is also provided with an installation connecting groove (34); a plurality of second contact parts (4) are arranged on a rotating arm (33) of the action transmission member (3), the second contact parts (4) are separated by a separation structure (35) on the rotating arm (33), and each second contact part (4) corresponds to a push rod (21) of the release (2).
9. The circuit breaker of claim 1, wherein: the shell (1) is internally provided with a wiring terminal (6), a bimetal component (7) and an arc extinguish chamber; the wiring terminals (6) are respectively arranged at two sides of the shell (1) far away from the action transmission part (3), and a bimetallic assembly (7) is arranged between the tripper (2) and the wiring terminal (6) at the same side; a contact mechanism is arranged below two sides of the action transmission part (3), and comprises a static contact component and a moving contact component matched with the static contact component; the arc extinguish chamber is arranged below the contact mechanism, and a plurality of arc extinguish grid pieces are arranged in the arc extinguish chamber in a stacked mode; the power-off device is characterized by further comprising a second tripping unit (8), wherein the second tripping unit (8) is arranged outside the shell (1) and enables the operating mechanism (5) to trip and power off through the action transmission member (3).
10. The circuit breaker of claim 1, wherein: a return spring is further arranged in the shell (1), and the return spring drives the action transmission member (3) to reset after a push rod (21) of the release (2) resets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501154.3U CN210897163U (en) | 2019-09-10 | 2019-09-10 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501154.3U CN210897163U (en) | 2019-09-10 | 2019-09-10 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210897163U true CN210897163U (en) | 2020-06-30 |
Family
ID=71323877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921501154.3U Active CN210897163U (en) | 2019-09-10 | 2019-09-10 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210897163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600341A (en) * | 2019-09-10 | 2019-12-20 | 上海诺雅克电气有限公司 | Circuit breaker |
-
2019
- 2019-09-10 CN CN201921501154.3U patent/CN210897163U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600341A (en) * | 2019-09-10 | 2019-12-20 | 上海诺雅克电气有限公司 | Circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230377824A1 (en) | Quick tripping device and circuit breaker | |
| CN111712897B (en) | Circuit breaker | |
| CN210897163U (en) | Circuit breaker | |
| EP3422370B1 (en) | Surge protector, and release mechanism and base thereof | |
| CN100555507C (en) | Miniature circuit breaker | |
| EP2549499B1 (en) | Electrical switching apparatus and secondary trip mechanism therefor | |
| CN217333981U (en) | Tripping mechanism | |
| CN110600341A (en) | Circuit breaker | |
| CN111477503A (en) | Plug-in circuit breaker | |
| CN202616152U (en) | Operating mechanism of small circuit breaker | |
| CN202259078U (en) | Small electricity leakage circuit breaker with width of 18mm | |
| CN107958828B (en) | Circuit breaker | |
| CN2802710Y (en) | Electromagnetic hydraulic circuit breaker | |
| CN212625440U (en) | Circuit breaker | |
| CN101373688B (en) | Electric magnet backup protection apparatus | |
| CN210743865U (en) | Low-voltage vacuum circuit breaker | |
| CN111463081A (en) | Miniature circuit breaker locking and tripping system and method | |
| CN220358045U (en) | Remote signaling trigger assembly for circuit on-off feedback | |
| CN213483647U (en) | Spring operating mechanism with voltage loss and under-voltage tripping protection | |
| CN202502964U (en) | Over-/under-voltage tripping device of miniature circuit breaker | |
| CN219936975U (en) | Small-sized breaker accessory | |
| CN212113603U (en) | Tripping mechanism and miniature circuit breaker adopting same | |
| CN217333982U (en) | Magnetic flux release reset structure and circuit breaker | |
| CN220710214U (en) | Leakage protection module of small-sized leakage circuit breaker | |
| CN215869241U (en) | Circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of utility model: Circuit breaker Granted publication date: 20200630 License type: Common License Record date: 20211025 |
|
| EE01 | Entry into force of recordation of patent licensing contract |