CN214672464U - Operating mechanism of small circuit breaker - Google Patents

Abstract

The utility model relates to an operating device of miniature circuit breaker, including movable contact subassembly, release piece, connecting rod, handle, be provided with on the movable contact subassembly with the movable contact subassembly pull to the separating brake spring of separating brake position, the release piece articulates on the movable contact subassembly, is provided with reset spring between release piece and the movable contact subassembly, and connecting rod inner articulates on the handle, outer end and movable contact subassembly swing joint, the chamber is detained to the formation year of movable contact subassembly upper end, carries to detain the last side in chamber and be the opening, carries to detain the lateral surface in chamber and for carrying the face of detaining, and the connecting rod outer end sets up to carry detain the intracavity and support on carrying the face of detaining, corresponds on the release piece and carries the face of detaining and form oblique ascending tripping surface, and when the relative movable contact subassembly of release piece swung, the tripping surface removed to carry and detain the outer end of intracavity with the connecting rod and hold off the chamber. The utility model discloses the connecting rod directly pushes up on carrying the knot face of detaining the chamber, has saved and has jumped the knot, simple structure, convenient assembling.

Description

Operating mechanism of small circuit breaker

Technical Field

The utility model relates to an operating device of miniature circuit breaker.

Background

The miniature circuit breaker is suitable for protecting overload and short circuit of a line with rated voltage of 230/400V and rated current of 50/60Hz and 63A, and can also be used for infrequent operation and conversion of the line under normal conditions. Miniature circuit breaker adopts operating device to realize breaking action, current operating device includes the handle usually, the moving contact support, the moving contact, the hasp, jump and detain, the hasp articulates on the moving contact support, the handle passes through U type connecting rod and jumps and detains and be connected, make handle and jump detain the linkage, realize operating device's combined floodgate or divide absolutely through jumping the cooperation between detaining and the hasp, the operating device of this kind of structure is because jumping to detain very little, articulate and drop easily on the support, especially in the assembling process, influence the production efficiency of product, and jump and detain when taking apart the circuit breaker and overhaul also can drop, it is inconvenient to maintain.

Disclosure of Invention

In order to solve the defects existing in the prior art, the utility model provides a simple structure, few accessories, convenient assembling's miniature circuit breaker's operating device.

In order to achieve the purpose, the utility model discloses an operating device of miniature circuit breaker, including movable contact subassembly, release member, connecting rod, handle, be provided with on the movable contact subassembly with the movable contact subassembly pull to the separating brake spring of separating brake position, the release member articulates on the movable contact subassembly, is provided with reset spring between release member and the movable contact subassembly, and the connecting rod inner articulates on the handle, outer end and movable contact subassembly swing joint, movable contact subassembly upper end forms year knot chamber, carries to detain the last side in chamber and be the opening, carries to detain the lateral surface in chamber and be the year knot face, and the connecting rod outer end sets up and detains the intracavity and support on year knot face carrying, corresponds on the release member and carries to detain the face and form oblique ascending release face, and when the relative movable contact subassembly of release member swung, the release face removed to carrying to detain the intracavity and hold the outer end of connecting rod out year knot chamber.

The beneficial effects of the utility model are that the connecting rod is connected and is detained the intracavity and carry the conflict cooperation of detaining the face at the year of movable contact subassembly, realizes the combined floodgate control of handle to the movable contact subassembly, and when the dropout, the dropout piece rotates, and the face of detaining on the dropout piece holds up the connecting rod outside the chamber to carrying the knot, makes the connecting rod deviate from carrying the knot intracavity, removes the connecting rod to the restriction of movable contact subassembly, and the movable contact subassembly realizes breaking under the effect of separating brake spring. The utility model discloses the connecting rod directly pushes up on carrying the knot face of detaining the chamber, has saved and has jumped the knot, simple structure, convenient assembling.

The utility model discloses further set up to the upside inwardly extending of connecting rod hinge hole department on the handle forms the spacing face that prevents the connecting rod and shift up, and the connecting rod extends to carrying from handle department and detains bending down behind the chamber top and extend to carrying and detain the intracavity again, carries and detains the medial surface upper end in chamber and outwards extends to form oblique ascending guide block. The limiting surface can limit the swing range of the connecting rod during tripping, and the bent connecting rod can correctly return to the buckle loading cavity under the guidance of the guide block after tripping.

The utility model discloses further set up as form on the take-off piece and detain the chamber that runs through that the confession connecting rod of chamber adaptation passes through with carrying, the lateral surface that runs through the chamber forms the thread off face. The connecting rod can pass through the through cavity, and the connecting rod is connected with the moving contact component.

The utility model discloses further set up as take off the fastener and form the indicating surface in the top that link up the chamber. The indication surface is arranged on the inner side of the display opening of the shell by bypassing the through cavity, so that the opening and closing state can be conveniently indicated.

The utility model discloses further set up to moving contact subassembly includes moving contact and contact seat, and the moving contact is connected in the contact seat.

The utility model discloses further set up to carry and detain the chamber and set up on the movable contact of movable contact subassembly, the guide block comprises outside the movable contact by the contact seat parcel. The movable contact is made of metal, and the load buckle cavity formed on the movable contact has high strength, is more stable and reliable in connection and matching with the connecting rod, and has long service life.

The utility model discloses further set up to carry and detain the chamber setting on the contact seat, the moving contact is connected at the contact seat lower extreme. The plastic contact seat is provided with the buckle carrying cavity, so that the volume of the moving contact can be reduced, copper materials are saved, and the cost is saved.

The utility model discloses further set up as the outside integrative pull rod that forms of lower extreme of taking off the fastener. The pull rod is integrally formed on the release piece, so that an assembly process is omitted, the assembly is convenient, and the production cost is low.

The utility model discloses further set up to form the shaft hole of long circle on the movable contact subassembly, set up the pivot in the shaft hole, take off the fastener and articulate on the movable contact subassembly through the pivot, the pivot can remove in the shaft hole.

The utility model discloses further set up to seted up the spring hole on the movable contact subassembly of shaft hole top, separating brake spring one end is colluded at the spring downthehole, and the other end of separating brake spring is fixed towards handle one side. When the long circular shaft hole is closed, the moving contact can move towards the static contact through the pulling force of the opening spring, so that the pressure is increased, and the moving contact and the static contact are ensured to be tightly connected.

Drawings

Fig. 1 is an assembly diagram of an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a rear view of an embodiment of the present invention.

Detailed Description

As shown in fig. 1-3, the specific embodiment of the utility model is an operating device of miniature circuit breaker, including moving contact 1, contact seat 2, take off fastener 3, connecting rod 4, handle 5, moving contact 1 fixes in contact seat 2, correspond the shaft hole 11 that forms the oblong on moving contact 1 and the contact seat 2, set up pivot 6 in the shaft hole 11, take off fastener 3 articulates on contact seat 2 through pivot 6, pivot 6 can remove in the shaft hole 11 of oblong, spring hole 12 has been seted up to correspondence on moving contact 1 and the contact seat 2 of shaft hole 11 top, spring hole 12 in-connection has the separating brake spring 7 that pulls moving contact 1 to the separating brake position, separating brake spring 7's the other end is fixed towards handle 5 one side. A reset torsion spring 8 is arranged between the tripping element 3 and the contact seat 2, a handle torsion spring 52 is arranged on the handle 5, the inner end of the connecting rod 4 is hinged on the handle 5, the upper side of the connecting rod hinge hole on the handle 5 extends inwards to form a limiting surface 51 for preventing the connecting rod 4 from moving upwards, the upper end of the movable contact 1 forms a buckle carrying cavity 13, the upper side of the buckle carrying cavity 13 is open, the outer side of the buckle carrying cavity 13 is a buckle carrying surface 14, the connecting rod 4 extends to the upper part of the buckle carrying cavity 13 from the handle 5, bends downwards and extends into the buckle carrying cavity 13, the outer end of the connecting rod 4 is arranged in the buckle carrying cavity 13 and abuts against the buckle carrying surface 14, the upper end of the inner side of the buckle carrying cavity 13 extends outwards to form an upward inclined guide block 15, the guide block 15 is formed by wrapping the contact seat 2 outside the movable contact 1, the limiting surface 51 can limit the swing range of the connecting rod 4 when tripping, and the bent connecting rod 4 can correctly return to the buckle carrying cavity 13 under the guide of the guide block 15 after tripping. The trip piece 3 is provided with a through cavity 31 which is matched with the buckle carrying cavity 13 and is used for the connecting rod 4 to pass through, the trip piece 3 forms an indicating surface 33 above the through cavity 31, the outer side surface of the through cavity 31 corresponds to the buckle carrying surface 14 to form an upward oblique trip surface 32, when the trip piece 3 swings relative to the movable contact 1, the trip surface 32 moves to the buckle carrying cavity 13 and can support the outer end of the connecting rod 4 out of the buckle carrying cavity 13 to realize tripping and brake separating, and the lower end of the trip piece 3 is integrally formed with a pull rod 34 outwards.

For convenience of description, the inner sides of the movable contact 1, the contact seat 2 and the release member 3 in the above embodiments refer to the direction toward the handle 5, and the other is the outer side; the inner end of the connecting rod 4 faces the handle 5, and the outer end faces the moving contact 1; the inner side of the handle 5 faces the contact seat 2.

The above embodiments are the preferred embodiments of the present invention, and other obvious improvements are as follows: the chamber setting is detained on the contact seat to the year, and the moving contact is connected at the contact seat lower extreme or is changed apparent changes such as the hookup location and the direction of separating brake spring, reset torsion spring and all be in the utility model discloses a within range.

Claims (10)

1. The utility model provides an operating device of miniature circuit breaker, includes movable contact subassembly, takes off fastener, connecting rod, handle, is provided with the separating brake spring that pulls the movable contact subassembly to the separating brake position on the movable contact subassembly, takes off the fastener and articulates on the movable contact subassembly, takes off and is provided with reset spring between fastener and the movable contact subassembly, and the connecting rod inner articulates on the handle, outer end and movable contact subassembly swing joint, its characterized in that: the moving contact assembly upper end forms and carries detains the chamber, carries to detain the last side in chamber and be the opening, carries to detain the lateral surface in chamber and for carrying the knot face, and the connecting rod outer end sets up and detains the intracavity and support on carrying the knot face at carrying, corresponds on the release and carries the knot face and form oblique ascending release face, and when the relative moving contact assembly swing of release, the release face removed to carry and detained the intracavity and hold out the outer end of connecting rod and carry the knot chamber.

2. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the upper side of a connecting rod hinge hole on the handle extends inwards to form a limiting surface for preventing the connecting rod from moving upwards, the connecting rod extends from the handle to the upper side of the buckle carrying cavity, then bends downwards and extends into the buckle carrying cavity, and the upper end of the inner side surface of the buckle carrying cavity extends outwards to form an oblique upward guide block.

3. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: and a through cavity matched with the buckle carrying cavity and used for the connecting rod to pass through is formed on the buckle release piece, and a buckle release surface is formed on the outer side surface of the through cavity.

4. An operating mechanism of a small size circuit breaker according to claim 3, wherein: the release member forms an indicating surface above the through cavity.

5. An operating mechanism of a small size circuit breaker according to claim 2, wherein: the moving contact component comprises a moving contact and a contact seat, and the moving contact is connected in the contact seat.

6. An operating mechanism of a small size circuit breaker according to claim 5, wherein: the load buckle cavity is arranged on a moving contact of the moving contact component, and the guide block is formed by wrapping a contact seat outside the moving contact.

7. An operating mechanism of a small size circuit breaker according to claim 5, wherein: the load buckle cavity is arranged on the contact seat, and the moving contact is connected to the lower end of the contact seat.

8. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the lower end of the tripping piece is integrally formed with a pull rod outwards.

9. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the moving contact assembly is provided with an oblong shaft hole, a rotating shaft is arranged in the shaft hole, the tripping piece is hinged on the moving contact assembly through the rotating shaft, and the rotating shaft can move in the shaft hole.

10. An operating mechanism of a small size circuit breaker according to claim 9, wherein: a spring hole is formed in the movable contact assembly above the shaft hole, one end of the brake separating spring is hooked in the spring hole, and the other end of the brake separating spring is fixed towards one side of the handle.

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