CN214313107U

CN214313107U - Clapper type tripping mechanism of circuit breaker

Info

Publication number: CN214313107U
Application number: CN202120505067.6U
Authority: CN
Inventors: 林式财; 唐自由
Original assignee: Chimin Electric Co ltd
Current assignee: Chimin Electric Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-09-28
Anticipated expiration: 2031-03-09

Abstract

The utility model discloses a clapping type tripping device of circuit breaker, including static contact, connecting plate and the yoke of connecting static contact and connecting plate, rotate on the yoke and be provided with and constitute linkage complex armature with the hasp, be equipped with the driving piece that resets that drive armature kept away from the yoke between armature and the yoke. The utility model has the advantages of it is following and effect: the utility model discloses spare part is less, simple structure, compact to reduce manufacturing cost, be fit for the future development of enterprise.

Description

Clapper type tripping mechanism of circuit breaker

Technical Field

The utility model relates to a circuit breaker, in particular to clap box-like tripping device of circuit breaker.

Background

Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is also called an automatic switch, commonly called an air switch and also called a low-voltage circuit breaker, and is an electric appliance which not only has the function of a manual switch, but also can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used for distributing electric energy, starting asynchronous motor infrequently, protecting power supply circuit and motor, etc., when they are seriously overloaded or short-circuited or under-voltage, etc. faults occur, it can automatically cut off circuit, its function is equivalent to the combination of fuse type switch and over-and under-heat relay, etc., and after breaking fault current, it does not need to change parts, so that it has been extensively used.

A short circuit protection mechanism, also called an electromagnetic trip, is usually provided in the circuit breaker, and when the current passing through the circuit breaker increases to a certain value, the electromagnetic trip rapidly trips the circuit breaker, thereby achieving a circuit protection function. The tripping mechanism in the prior art generally comprises a fixed contact, a connecting plate, a magnetic yoke, a coil and an iron core, when a short circuit occurs in a circuit, the iron core pushes an ejector rod to move forwards, and the ejector rod pushes a lock catch to trip, so that a system is tripped. However, the conventional tripping mechanism occupies a large space, has many parts and is complex in structure, so that the production cost is high, and the conventional tripping mechanism is not suitable for future development of enterprises.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a clapping type tripping device of circuit breaker, this clapping type tripping device's spare part is less, simple structure, compact to manufacturing cost has been reduced, the future development of suitable enterprise.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a clapping type tripping device of circuit breaker, includes static contact, connecting plate and connects the yoke of static contact and connecting plate, it is provided with the armature that constitutes linkage complex with the hasp to rotate on the yoke, be equipped with the driving piece that resets that drives armature and keep away from the yoke between armature and the yoke.

By adopting the technical scheme, when the current in the circuit breaker is increased, the magnetic yoke generates heat to generate a magnetic field for adsorbing the armature to rotate towards the magnetic yoke, so that the armature is separated from the lock catch to unlock the lock catch, and then the system finishes tripping action. When the magnetic yoke does not generate a magnetic field, the armature resets under the action of the reset driving piece and limits the lock catch. The structure reduces the original coil and iron core parts, and is simple and compact in structure, so that the production cost is reduced, and the iron core is suitable for future development of enterprises.

Further setting the following steps: an installation area with openings at two ends is formed in the magnetic yoke, and the connecting plate and the fixed contact are integrally arranged and installed in the installation area.

Through adopting above-mentioned technical scheme, the setting up of installing zone makes connecting plate and static contact can install inside the yoke to further reduce whole volume, make the structure compacter.

Further setting the following steps: the magnetic iron comprises a main shaft arranged on a magnetic yoke, and the armature is in running fit with the main shaft.

By adopting the technical scheme, the arrangement of the main shaft realizes the rotating fit between the magnet yoke and the armature.

Further setting the following steps: the magnetic yoke is provided with an installation channel communicated with the outside and the installation area, the armature swings around the main shaft towards the installation channel in a reciprocating mode, the reset driving piece comprises a torsional spring, the main shaft is sleeved with the torsional spring, one end of the torsional spring abuts against the installation area, and the other end of the torsional spring abuts against the armature.

Through adopting above-mentioned technical scheme, the formation of installation passageway makes the torsional spring can be located the installing zone, utilizes the installation space of installing zone to further reduce the whole volume of mechanism, makes volume and structure compacter, and the installing zone can carry on spacingly to the torsional spring of installation, promotes the stability of installation back torsional spring.

Further setting the following steps: the spindle is located in the mounting area.

By adopting the technical scheme, the main shaft is installed by utilizing the space of the installation area, so that the size and the structure are more compact.

Further setting the following steps: and the armature is provided with a limiting part which extends into the mounting area and is matched with the mounting area to limit the axial movement of the armature along the main shaft.

Through adopting above-mentioned technical scheme, the setting of spacing portion promotes armature pivoted stability.

Further setting the following steps: and the fixed contact is provided with a silver point contacted with the moving contact.

By adopting the technical scheme, the service life of the static contact is prolonged by the arrangement of the silver points.

Further setting the following steps: and a contact end which is in linkage fit with the lock catch is formed on the armature.

By adopting the technical scheme, the arrangement of the contact end ensures the stable contact between the armature and the lock catch.

Further setting the following steps: and the connecting plate and the static contact are both provided with positioning bulges matched with the shell to form positioning.

Through adopting above-mentioned technical scheme, the bellied setting in location promotes the installation stability of this mechanism in the casing.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses spare part is less, simple structure, compact to reduce manufacturing cost, be fit for the future development of enterprise.

Drawings

FIG. 1 is a perspective view of an embodiment;

FIG. 2 is a schematic structural diagram of an embodiment;

fig. 3 is a partial exploded view of the embodiment.

In the figure: 1. static contact; 2. a connecting plate; 3. a magnetic yoke; 4. an armature; 5. an installation area; 6. a main shaft; 7. installing a channel; 8. a torsion spring; 9. a limiting part; 10. silver dots; 11. a contact end; 12. and a positioning projection.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, a clapping type tripping mechanism of a circuit breaker includes a fixed contact 1, a connecting plate 2 and a magnetic yoke 3 connecting the fixed contact 1 and the connecting plate 2, an armature 4 forming linkage fit with a lock catch is rotatably arranged on the magnetic yoke 3 through a main shaft 6, the main shaft 6 is fixedly arranged on the magnetic yoke 3, and a reset driving piece for driving the armature 4 to be far away from the magnetic yoke 3 is arranged between the armature 4 and the magnetic yoke 3.

An installation area 5 with openings at two ends is formed in the magnetic yoke 3, and the connecting plate 2 and the static contact 1 are integrally arranged and welded and fixed in the installation area 5. The yoke 3 is formed with a mounting passage 7 communicating the outside with the mounting region 5, and the sectional shape of the yoke 3 is changed into a U-shape by the formation of the mounting passage 7 and the mounting region 5.

Armature 4 is around 6 reciprocal swings towards installation channel 7 in main shaft, and the reset driving piece is

torsional spring

8, and 8 covers of torsional spring are located main shaft 6 and are located installing

zone

5, and 8 looks butts in installing zone 5 in torsional spring one end, and the other end butts in armature 4. The main shaft 6 is positioned in the mounting area 5, and the armature 4 is provided with a limiting part 9 which extends into the mounting area 5 and is matched with the mounting area 5 to limit the armature 4 to move along the axial direction of the main shaft 6.

The fixed contact 1 is fixedly provided with a silver point 10 contacted with the moving contact, the armature 4 is provided with a contact end 11 which is in linkage fit with the lock catch, and the contact end 11 and the armature 4 are integrally arranged. And positioning bulges 12 matched with the shell to form positioning are respectively extended on the connecting plate 2 and the static contact 1.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a clapping type tripping device of circuit breaker, includes static contact (1), connecting plate (2) and connects yoke (3) of static contact (1) and connecting plate (2), its characterized in that: the magnetic yoke (3) is rotatably provided with an armature (4) which is in linkage fit with the lock catch, and a reset driving piece for driving the armature (4) to be far away from the magnetic yoke (3) is arranged between the armature (4) and the magnetic yoke (3).

2. The clapper-type trip mechanism of circuit breaker of claim 1, wherein: an installation area (5) with openings at two ends is formed in the magnetic yoke (3), and the connecting plate (2) and the static contact (1) are integrally arranged and installed in the installation area (5).

3. The clapper-type trip mechanism of circuit breaker of claim 2, wherein: the magnetic circuit breaker comprises a main shaft (6) arranged on a magnetic yoke (3), and an armature iron (4) is in running fit with the main shaft (6).

4. The clapper-type trip mechanism of a circuit breaker of claim 3, wherein: be formed with installation passageway (7) that the intercommunication is external and installing zone (5) on yoke (3), armature (4) are around in main shaft (6) towards installation passageway (7) reciprocating swing, the driving piece that resets includes torsional spring (8), main shaft (6) are located to torsional spring (8) cover, torsional spring (8) one end offsets in installing zone (5), the other end offsets in armature (4).

5. The clapper-type trip mechanism of a circuit breaker of claim 3, wherein: the main shaft (6) is located in the mounting area (5).

6. The clapper-type trip mechanism of a circuit breaker of claim 3, wherein: and the armature iron (4) is provided with a limiting part (9) which extends into the mounting area (5) and is matched with the mounting area (5) to limit the armature iron (4) to move along the axial direction of the main shaft (6).

7. The clapper-type trip mechanism of circuit breaker of claim 1, wherein: and the static contact (1) is provided with a silver point (10) which is in contact with the moving contact.

8. The clapper-type trip mechanism of circuit breaker of claim 1, wherein: and a contact end (11) which is in linkage fit with the lock catch is formed on the armature iron (4).

9. The clapper-type trip mechanism of circuit breaker of claim 1, wherein: and the connecting plate (2) and the static contact (1) are respectively provided with a positioning bulge (12) which is matched with the shell to form positioning.