CN209929252U - Electromagnetic tripping mechanism and leakage protection circuit breaker with same - Google Patents
Electromagnetic tripping mechanism and leakage protection circuit breaker with same Download PDFInfo
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- CN209929252U CN209929252U CN201920785997.4U CN201920785997U CN209929252U CN 209929252 U CN209929252 U CN 209929252U CN 201920785997 U CN201920785997 U CN 201920785997U CN 209929252 U CN209929252 U CN 209929252U
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Abstract
The utility model discloses an electromagnetic tripping mechanism and a leakage protection circuit breaker with the same, wherein the electromagnetic tripping mechanism comprises a shell, a magnetic circuit system and a tripping piece; the magnetic circuit system is arranged in the shell and comprises permanent magnet steel, an armature, an induction coil, a tension spring and a magnetic yoke, wherein the permanent magnet steel is fixed on the magnetic yoke; the armature of the magnetic circuit system is linked with a release piece arranged at the outer side part of the shell through a transmission part, and the release piece is provided with a trigger boss and a reset boss. The utility model provides a rational in infrastructure, action sensitivity is high, has fine practicality.
Description
Technical Field
The utility model relates to an electromagnetism tripping device and have this electromagnetism tripping device's earth leakage protection circuit breaker belongs to circuit breaker structural design field.
Background
The earth leakage protection circuit breaker is widely applied to the technical field of low-voltage power distribution, the tripping mechanism is an important device in the earth leakage protection circuit breaker, and the tripping mechanism is matched with a contact mechanism of the circuit breaker to complete tripping and opening actions of the circuit breaker. The electromagnetic tripping mechanism is one of the trippers, the internal space of the circuit breaker is limited, so the structure of the tripping mechanism is required to be simple, the structure of the existing electromagnetic tripping mechanism is complex, the number of external linkage links is large, the transmission stroke is long, the transmission is prone to generating problems, and the tripping time of the circuit breaker is prolonged.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims at providing an electromagnetic tripping device that the structure is simple relatively, sensitivity is high.
Realize the utility model discloses the technical scheme of purpose is:
an electromagnetic tripping mechanism comprises a shell, a magnetic circuit system and a tripping piece; the magnetic circuit system is arranged in the shell and comprises permanent magnet steel, an armature, an induction coil, a tension spring and a magnetic yoke, wherein the permanent magnet steel is fixed on the magnetic yoke, the induction coil is sleeved on the magnetic yoke, the first end of the armature is movably arranged on the magnetic yoke, the second end of the armature is opposite to the induction coil, the tension spring provides elastic force for the armature, the magnetic yoke is attracted with the armature under the action of a magnetic field of the permanent magnet steel in a normal state, and the tension spring is in a stretching state; the armature of the magnetic circuit system is linked with a tripping piece arranged at the outer side part of the shell through a transmission part, and the tripping piece is provided with a triggering boss suitable for enabling the circuit breaker to trip and open the brake when rotating and a resetting boss used for driving the tripping piece to reset under the pushing of a rocker arm of an operating mechanism in the closing process of the circuit breaker.
Among the above-mentioned technical scheme, drive disk assembly is in including portable setting ejector pin and the rotatable installation in the casing transmission shaft in the casing, on the transmission shaft with the position that the ejector pin corresponds is equipped with the butt joint board, the one end of ejector pin is supported on the armature, the other end supports on the butt joint board, transmission shaft one end with take off the fastener and connect, and drive when the transmission shaft rotates take off the fastener and rotate.
In the above technical scheme, the fastening part is fixedly connected to the end part of the transmission shaft.
In the above technical scheme, the fastening-releasing piece is integrally formed at the end of the transmission shaft.
Among the above-mentioned technical scheme, the take off the fastener pass through the installation axle rotatable installation on the casing, the transmission shaft stretches out the one end of casing has the connection turning arm, be equipped with the connecting hole on the take off fastener, connect the turning arm with the connecting hole cooperation the transmission shaft drives when rotating the take off fastener is around the installation axle rotates.
In the technical scheme, the strip-shaped mounting hole is formed in the tripping piece, the reset boss is provided with the mounting portion and the driving portion, the mounting portion is movably mounted in the strip-shaped mounting hole, the driving portion extends out of the strip-shaped mounting hole, the buffer spring is arranged in the strip-shaped mounting hole, and in a normal state, under the elastic action of the buffer spring, the mounting portion is located at one end in the strip-shaped mounting hole.
In the above technical scheme, the reset boss and the trigger boss are integrally formed on the release member.
In the above technical scheme, the permanent magnet steel is made of alnico.
The utility model provides a leakage protection circuit breaker, includes the shell, and sets up current transformer, operating device and electromagnetism tripping device in the shell, electromagnetism tripping device installs operating device's lateral part, electromagnetism tripping device adopts foretell electromagnetism tripping device.
The utility model discloses has positive effect: when the electromagnetic tripping mechanism in the utility model is used, when the circuit leaks electricity, the induction coil generates a reverse magnetic field to offset the forward magnetic field generated by the permanent magnet steel, the armature is pulled under the action of spring tension, the second end of the armature is far away from the induction coil and drives the tripping element to act through the transmission component, and then the triggering lug boss on the induction coil triggers the tripping piece in the circuit breaker when the tripping element rotates, so that the circuit breaker is tripped and separated, in the process of closing (separating) the circuit breaker, the rocker arm of the operating mechanism pushes the resetting lug boss to drive the tripping element to reset, the resetting element drives the armature to reset through the transmission component in the resetting process of the tripping element (namely, the second end of the armature is pushed to move towards the direction close to the induction coil), thereby the second end of the armature is again attracted with the magnet yoke to realize resetting under the action of the magnetic field of the permanent magnet steel, the structure of the, high sensitivity and better use effect.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic trip mechanism according to the present invention;
fig. 2 is a side view of the electromagnetic trip mechanism shown in fig. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural view of the propeller shaft of FIG. 1;
fig. 5 is a schematic structural view of the electromagnetic trip mechanism of fig. 1 mounted on a residual current circuit breaker;
fig. 6 is a schematic structural view of another electromagnetic trip mechanism according to the present invention;
fig. 7 is a side view of the electromagnetic trip mechanism of fig. 6;
FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;
fig. 9 is a schematic structural view of the transmission shaft of the electromagnetic trip mechanism shown in fig. 6 engaged with a trip member;
FIG. 10 is a schematic view of the assembly shown in FIG. 9, viewed from another angle;
fig. 11 is a schematic structural view of the electromagnetic trip mechanism of fig. 6 mounted on a residual current circuit breaker.
The reference symbols shown in the figures are: 01-a housing; 02-a current transformer; 1-a shell; 2-a magnetic circuit system; 21-permanent magnet steel; 22-an armature; 23-an induction coil; 24-a tension spring; 25-a magnetic yoke; 3-disengaging the fastener; 31-mounting shaft; 32-connecting hole; 33-strip-shaped mounting holes; 4-triggering the boss; 5-resetting the boss; 51-a mounting portion; 52-a drive section; 6-an operating mechanism; 7-a trip piece; 8-a top rod; 9-a transmission shaft; 91-abutting the board; 92-connecting crank arm; 10-buffer spring.
Detailed Description
The specific structure of the present invention is described below with reference to the attached drawings:
An electromagnetic tripping mechanism, as shown in fig. 1 to 4, comprises a housing 1, a magnetic circuit system 2 and a tripping piece 3; the magnetic circuit system 2 is arranged inside the shell 1, the magnetic circuit system 2 comprises permanent magnet steel 21, an armature 22, an induction coil 23, a tension spring 24 and a magnetic yoke 25, the permanent magnet steel 21 is fixed on the magnetic yoke 25, the induction coil 23 is sleeved on the magnetic yoke 25, a first end of the armature 22 is movably arranged on the magnetic yoke 25, a second end of the armature 22 is opposite to the induction coil 23, the tension spring 24 provides elastic force for the armature 22, the magnetic yoke 25 and the armature 22 are attracted under the action of a magnetic field of the permanent magnet steel 21 in a normal state, and the tension spring 24 is in a stretching state; the armature 22 of the magnetic circuit system 2 is linked with the trip unit 3 arranged at the outer side part of the shell 1 through a transmission part, and the trip unit 3 is provided with a trigger boss 4 suitable for tripping and opening the circuit breaker when rotating and a reset boss 5 used for driving the trip unit 3 to reset under the pushing of a rocker arm of an operating mechanism 6 in the closing process of the circuit breaker. When the electromagnetic tripping mechanism in the embodiment is installed and used, when a circuit leaks electricity, the induction coil 23 generates a reverse magnetic field to counteract a forward magnetic field generated by the permanent magnet steel 21, the armature 22 is pulled under the action of spring tension, the second end of the armature 22 is far away from the induction coil 23 and drives the tripping part 3 to act through the transmission part, and then the tripping piece 7 in the circuit breaker is triggered through the triggering boss 4 on the tripping part 3, so that the circuit breaker is tripped and opened, in the closing process of the circuit breaker, the rocker arm of the operating mechanism 6 pushes the resetting boss 5 to drive the tripping part 3 to reset, in the resetting process of the tripping part 3, the armature 22 is driven to reset through the transmission part (namely, the second end of the armature 22 is pushed to move towards the direction close to the induction coil 23), so that the second end of the armature 22 is attracted with the magnetic yoke 25 again under the action of the, the electromagnetic tripping mechanism in the embodiment has the advantages of simple and reasonable structure, high sensitivity and better use effect.
In this embodiment, the transmission part includes that the portable setting is in ejector pin 8 in the casing 1 and rotatable the installing transmission shaft 9 in the casing 1, the position that corresponds with ejector pin 8 on the transmission shaft 9 is equipped with butt plate 91, the one end of ejector pin 8 is supported on armature 22, and the other end supports on butt plate 91, transmission shaft 9 one end with take off fastener 3 and be connected, and drive when transmission shaft 9 rotates take off fastener 3 rotates.
The fastening releasing piece 3 is fixedly connected to the end of the transmission shaft 9 in an assembling mode, or the fastening releasing piece 3 is integrally formed at the end of the transmission shaft 9.
In this embodiment, the reset boss 5 and the trigger boss 4 are integrally formed on the release member 3, as shown in the attached drawings.
In this embodiment, permanent magnet steel 21 is alnico material, and alnico is material that magnetism is adjustable, can adjust alnico material magnetism size with equipment according to the product requirement in the in-service use to satisfy the surplus action current requirement of various specifications.
As a modified structure of embodiment 1, referring to fig. 6 to 10, in this embodiment, the fastening member 3 is rotatably mounted on the housing 1 through a mounting shaft 31, one end of the transmission shaft 9 extending out of the housing 1 has a connecting crank arm 92, the fastening member 3 is provided with a connecting hole 32, and the connecting crank arm 92 is engaged with the connecting hole 32, so that the fastening member 3 is driven to rotate around the mounting shaft 31 when the transmission shaft 9 rotates.
As a further improvement of embodiment 2, referring to the drawings, in this embodiment, a strip-shaped mounting hole 33 is formed in the release member 3, the reset boss 5 has a mounting portion 51 and a driving portion 52, the mounting portion 51 is movably mounted in the strip-shaped mounting hole 33, the driving portion 52 extends out of the strip-shaped mounting hole 33, a buffer spring 10 is mounted in the strip-shaped mounting hole 33, and in a normal state, the mounting portion is located at one end in the strip-shaped mounting hole 33 under the elastic force action of the buffer spring 10.
An earth leakage protection circuit breaker, as shown in fig. 5, includes a housing 01, and a current transformer 02, an operating mechanism 6 and an electromagnetic trip mechanism which are arranged in the housing 01, wherein the electromagnetic trip mechanism is arranged on a side portion of the operating mechanism 6, and the electromagnetic trip mechanism adopts the electromagnetic trip mechanism described in embodiment 1.
An earth leakage protection circuit breaker, as shown in fig. 11, includes a housing 01, and a current transformer 02, an operating mechanism 6 and an electromagnetic trip mechanism which are arranged in the housing 01, wherein the electromagnetic trip mechanism is arranged on a side portion of the operating mechanism 6, and the electromagnetic trip mechanism in embodiment 3 is adopted.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.
Claims (9)
1. An electromagnetic tripping mechanism comprises a shell (1), a magnetic circuit system (2) and a tripping piece (3); the magnetic circuit system (2) is arranged inside the shell (1), the magnetic circuit system (2) comprises permanent magnet steel (21), an armature (22), an induction coil (23), a tension spring (24) and a magnetic yoke (25), the permanent magnet steel (21) is fixed on the magnetic yoke (25), the induction coil (23) is sleeved on the magnetic yoke (25), the first end of the armature (22) is movably arranged on the magnetic yoke (25), the second end of the armature (22) is opposite to the induction coil (23), the tension spring (24) provides elastic force for the armature (22), the magnetic yoke (25) is attracted with the armature (22) under the action of a magnetic field of the permanent magnet steel (21) in a normal state, and the tension spring (24) is in a stretching state;
the circuit breaker is characterized in that the armature (22) is linked with a tripping piece (3) arranged at the outer side part of the shell (1) through a transmission part, and the tripping piece (3) is provided with a triggering boss (4) suitable for enabling the circuit breaker to trip and open the brake when rotating and a reset boss (5) used for driving the tripping piece (3) to reset under the pushing of a rocker arm of an operating mechanism (6) in the switching-on process of the circuit breaker.
2. The electromagnetic trip mechanism according to claim 1, characterized in that the transmission component comprises a push rod (8) movably disposed in the housing (1) and a transmission shaft (9) rotatably mounted in the housing (1), an abutting plate (91) is disposed on the transmission shaft (9) at a position corresponding to the push rod (8), one end of the push rod (8) abuts against the armature (22), the other end abuts against the abutting plate (91), one end of the transmission shaft (9) is connected to the trip member (3), and the trip member (3) is driven to rotate when the transmission shaft (9) rotates.
3. The electromagnetic trip mechanism according to claim 2, characterized in that the trip member (3) is fixedly connected to an end of the transmission shaft (9).
4. Electromagnetic trip mechanism according to claim 2, characterized in that the trip piece (3) is integrally formed at the end of the transmission shaft (9).
5. The electromagnetic trip mechanism according to claim 2, characterized in that the trip member (3) is rotatably mounted on the housing (1) by a mounting shaft (31), the end of the transmission shaft (9) extending out of the housing (1) has a connecting crank arm (92), the trip member (3) is provided with a connecting hole (32), the connecting crank arm (92) is matched with the connecting hole (32), and the trip member (3) is driven to rotate around the mounting shaft (31) when the transmission shaft (9) rotates.
6. The electromagnetic trip mechanism according to any one of claims 1 to 5, characterized in that a strip-shaped mounting hole (33) is formed in the trip member (3), the reset boss (5) has a mounting portion (51) and a driving portion (52), the mounting portion (51) is movably mounted in the strip-shaped mounting hole (33), the driving portion (52) extends out of the strip-shaped mounting hole (33), a buffer spring (10) is mounted in the strip-shaped mounting hole (33), and the mounting portion is located at one end in the strip-shaped mounting hole (33) under the action of the elastic force of the buffer spring (10) in a normal state.
7. The electromagnetic trip mechanism according to any of claims 1 to 5, characterized in that the reset boss (5) and the trigger boss (4) are integrally formed on the trip member (3).
8. The electromagnetic trip mechanism according to any of claims 1 to 5, characterized in that the permanent magnet steel (21) is of alnico.
9. An earth leakage protection circuit breaker, comprising a housing (01), and a current transformer (02), an operating mechanism (6) and an electromagnetic trip mechanism arranged in the housing (01), wherein the electromagnetic trip mechanism is arranged at the side part of the operating mechanism (6), and is characterized in that the electromagnetic trip mechanism adopts the electromagnetic trip mechanism of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785997.4U CN209929252U (en) | 2019-05-28 | 2019-05-28 | Electromagnetic tripping mechanism and leakage protection circuit breaker with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785997.4U CN209929252U (en) | 2019-05-28 | 2019-05-28 | Electromagnetic tripping mechanism and leakage protection circuit breaker with same |
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| Publication Number | Publication Date |
|---|---|
| CN209929252U true CN209929252U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920785997.4U Active CN209929252U (en) | 2019-05-28 | 2019-05-28 | Electromagnetic tripping mechanism and leakage protection circuit breaker with same |
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| CN (1) | CN209929252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471031A (en) * | 2020-03-31 | 2021-10-01 | 华为技术有限公司 | Tripping device, residual current protection device and circuit system |
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2019
- 2019-05-28 CN CN201920785997.4U patent/CN209929252U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471031A (en) * | 2020-03-31 | 2021-10-01 | 华为技术有限公司 | Tripping device, residual current protection device and circuit system |
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