CN211604976U

CN211604976U - Linkage structure of circuit breaker

Info

Publication number: CN211604976U
Application number: CN202020681302.0U
Authority: CN
Inventors: 马耀
Original assignee: Guangdong Wanye Electric Power Fire Engineering Co ltd
Current assignee: Guangdong Wanye Electric Power Fire Engineering Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-09-29
Anticipated expiration: 2030-04-28

Abstract

The utility model relates to a linkage structure of circuit breaker, it includes the circuit breaker casing, and the inside of circuit breaker casing is provided with response drive arrangement and gangbar, and response drive arrangement includes micro-gap switch and two contacts, and micro-gap switch is coupled each other with the contact, and two contacts set up respectively in the inside both sides of circuit breaker casing, and the gangbar is connected with its reciprocating motion of drive to respectively with the transmission of two contact looks butt positions. The linkage rod is driven to reciprocate between the two contacts through the transmission device, and when the linkage rod is respectively abutted against different contacts, the micro switch can control the opening or closing of the circuit, so that the opening and closing operation of the circuit breaker can be realized, the structure is simple, and the occupied space is small.

Description

Linkage structure of circuit breaker

Technical Field

The utility model belongs to the technical field of the technique of circuit breaker and specifically relates to a linkage structure of circuit breaker is related to.

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 within a prescribed time. The circuit breaker is disposed at a circuit location between the power source and the load, and communicates or breaks the circuit through the communication structure.

Currently, as disclosed in chinese patent utility model patent application publication No. CN207834238U, a novel automatic opening and closing control mechanism for a miniature circuit breaker and a circuit breaker are provided, the novel automatic opening and closing control mechanism for a miniature circuit breaker comprises a housing, a driving motor, a reduction gear set, a double-layer abnormal-shaped reduction opening incomplete gear, an air-break release connecting rod, a linkage shaft driving closing incomplete gear, a wrench linkage shaft, a release driving lever, an electric leakage release electromagnet and an electric leakage circuit board; the driving motor drives the double-layer special-shaped speed reduction incomplete opening gear and the linkage shaft to drive the incomplete closing gear to rotate, so that closing is realized; or the convex block on the double-layer special-shaped speed-reducing brake-separating incomplete gear impacts one end of the connecting rod of the idle release tripper to realize brake separation.

The above prior art solutions have the following drawbacks: the linkage structure of the circuit breaker comprises other parts such as a reduction gear set, a double-layer special-shaped reduction opening incomplete gear and the like, and is relatively complex and large in occupied space.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, one of the purposes of the utility model is to provide a linkage structure of circuit breaker, it has simple structure, installs the less effect of area.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a linkage structure of circuit breaker, includes the circuit breaker casing, the inside of circuit breaker casing is provided with response drive arrangement and gangbar, response drive arrangement includes micro-gap switch and two contacts, micro-gap switch is coupled each other with the contact, two the contact sets up respectively in the inside both sides of circuit breaker casing, the gangbar is connected with its reciprocating motion of drive and arrives respectively with the transmission of two contact looks butt positions.

Through adopting above-mentioned technical scheme, utilize transmission drive gangbar to remove between two contacts, make the gangbar remove with the mutual butt position of contact, when gangbar and one of them contact conflict each other, the contact is with signal transmission to micro-gap switch, utilizes micro-gap switch to carry out corresponding separating brake or combined floodgate to the circuit to realize the divide-shut brake operation of circuit breaker, simple structure, installation area is less, and convenient equipment.

The present invention may be further configured in a preferred embodiment as: the transmission device comprises an adjusting gear and a hinged ball, the adjusting gear is rotatably arranged in the shell of the circuit breaker, a square block is fixedly arranged in the breaker shell, the side wall of the square block is provided with a hinge socket rotationally connected with a hinge ball, the side wall of the hinge ball extending out of the hinge nest is fixedly connected with one end of the linkage rod, the side wall of the square block back to the hinge nest is provided with an avoidance groove communicated with the hinge nest, the adjusting gear is fixedly provided with an eccentric rod close to the edge of the adjusting gear, one end of the eccentric rod far away from the adjusting gear extends into the avoiding groove, and with articulated ball fixed connection, the mutual butt of eccentric rod and the lateral wall of dodging the groove, the one end that eccentric rod and gangbar are close to the articulated ball all coincides each other with the same the central axis of articulated ball, adjusting gear is connected with the drive arrangement who drives its rotation.

By adopting the technical scheme, the driving mechanism drives the adjusting gear to rotate forwards or backwards, the adjusting gear drives the eccentric rod, the hinge ball and the linkage rod to rotate around the central axis of the adjusting gear in the rotating process, and the linkage rod can move back and forth between the two contacts, so that the opening and closing operation of the circuit breaker is realized.

The present invention may be further configured in a preferred embodiment as: the driving device comprises a servo motor fixedly arranged inside the breaker shell and a driving gear fixedly connected with an output shaft of the servo motor, and the driving gear is meshed with the adjusting gear.

Through adopting above-mentioned technical scheme, servo motor drive driving gear corotation or reversal, and the driving gear drives the synchronous rotation of adjusting gear to realize the divide-shut brake control of circuit breaker.

The present invention may be further configured in a preferred embodiment as: the fixed spliced pole that runs through circuit breaker casing lateral wall that is provided with in the middle part of adjusting gear, the one end that spliced pole application circuit breaker casing is connected with the action bars.

Through adopting above-mentioned technical scheme, because servo motor does not possess self-locking function, when servo motor stopped to operate, rotate the action bars and can drive the synchronous rotation of adjusting gear, realize the divide-shut brake operation of hand regulation circuit breaker.

The present invention may be further configured in a preferred embodiment as: the operating rod is detachably connected with the connecting column, a cross block is fixedly arranged on the operating rod, and a cross groove which is matched and connected with the cross block in an inserting mode is formed in one end face, away from the adjusting gear, of the connecting column.

Through adopting above-mentioned technical scheme, the operation rod can be dismantled with the spliced pole and be connected in the inside of cross piece grafting and cross recess, when not needing the operation rod, can dismantle the operation rod from the circuit breaker casing, avoids operation rod occupation space.

The present invention may be further configured in a preferred embodiment as: and a first magnet is fixedly arranged at one end of the cross block, which is far away from the operating rod, and a second magnet which is magnetically attracted with the first magnet is fixedly arranged in the cross groove.

Through adopting above-mentioned technical scheme, when cross piece is pegged graft inside the cross recess, first magnet and the mutual magnetism of second magnet attract mutually, can strengthen the stability of being connected between action bars and the spliced pole.

The present invention may be further configured in a preferred embodiment as: the inside of circuit breaker casing is fixed and is provided with two sets of clamping pieces, every group the clamping piece is provided with two, and is same a set of the clamping piece corresponds with the contact each other, works as when the gangbar was with one of them contact looks butt, corresponding same two clamping pieces of a set of fixed centre gripping respectively in the both sides of gangbar, same two of a set of the one end that circuit breaker shells inner wall was kept away from to the clamping piece slopes to set up mutually.

Through adopting above-mentioned technical scheme, when the gangbar removed with the mutual position of contradicting of contact, corresponding same two clamping pieces of a set of centre gripping was in the both sides of gangbar, fixes the gangbar, makes gangbar and contact can stabilize mutual conflict, improves the performance of circuit breaker.

The present invention may be further configured in a preferred embodiment as: the inside of circuit breaker casing is fixed and is provided with two limiting plates, two the limiting plate is close to one side each other and all sets up the overlap joint groove with the mutual overlap joint of gangbar, two the overlap joint groove is corresponding with the contact respectively, works as when the gangbar is with one of them contact looks butt, the gangbar overlaps with corresponding overlap joint groove mutually.

By adopting the technical scheme, when the linkage rod is abutted against one of the contacts, the linkage rod and the corresponding lap joint groove are mutually matched and lapped, so that the linkage rod can be moved to the accurate position where the linkage rod is abutted against the contact, and the linkage rod is accurately connected with the contact.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the linkage rod is driven by the transmission device to move between the two contacts, so that the linkage rod moves to a position where the linkage rod is abutted against the contacts, when the linkage rod is abutted against one of the contacts, the contact transmits a signal to the micro switch, and the micro switch is used for correspondingly opening or closing a circuit, so that the opening and closing operation of the circuit breaker is realized, the structure is simple, the installation area is small, and the assembly is convenient;

2. the servo motor drives the driving gear to rotate forwards or reversely, the driving gear drives the adjusting gear to rotate forwards or reversely, the adjusting gear drives the eccentric rod, the hinge ball and the linkage rod to rotate around the central axis of the adjusting gear in the rotating process, and the linkage rod can move back and forth between the two contacts, so that the opening and closing operation of the circuit breaker is realized;

3. when the linkage rod moves to the position where the linkage rod is mutually abutted to the contact, the two clamping pieces corresponding to the same group are clamped on the two sides of the linkage rod to fix the linkage rod, so that the linkage rod and the contact can be stably abutted to each other, and the performance of the circuit breaker is improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a linkage structure of a circuit breaker;

fig. 2 is a schematic sectional view of a linkage structure of a circuit breaker;

fig. 3 is a partially enlarged schematic view of a portion a of fig. 2.

In the figure, 1, a circuit breaker housing; 11. a square block; 111. a hinge socket; 112. an avoidance groove; 12. a limiting plate; 121. a lap joint groove; 13. a clip; 14. a contact; 15. a microswitch; 151. an indicator light; 16. a servo motor; 161. a driving gear; 2. hinging the ball; 21. a linkage rod; 3. an adjusting gear; 31. an eccentric rod; 32. connecting columns; 321. a cross groove; 322. a second magnet; 4. an operating lever; 41. a cross block; 411. a first magnet.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a linkage structure of circuit breaker, including circuit breaker casing 1, circuit breaker casing 1's internally mounted has gangbar 21 and induction drive device, and induction drive device includes micro-gap switch 15 and two contacts 14, and micro-gap switch 15 is installed in circuit breaker casing 1's inside wall, and contact 14 is fixed in circuit breaker casing 1's inner wall, and contact 14 and micro-gap switch 15 are coupled each other, and one of them contact 14 can the breaking operation of starting circuit, and another contact 14 can the closing operation of starting circuit. The linkage rod 21 reciprocates between the two contacts 14 through the transmission device, so that the linkage rod 21 respectively abuts against the two contacts 14 at different positions, and the operation of switching on and off in the circuit breaker is realized.

Referring to fig. 2 and 3, the transmission device includes an adjusting gear 3, an eccentric rod 31 and a hinge ball 2, a square block 11 is fixedly mounted inside the circuit breaker housing 1, the square block 11 is located on the same side of the two contacts 14, a spherical hinge socket 111 is formed in the square block 11 towards the side of the two contacts 14, the opening diameter of the hinge socket 111 located on the side wall of the square block 11 is smaller than the diameter of the hinge socket 111, the hinge ball 2 is rotatably arranged inside the hinge socket 111 and cannot be separated from the hinge socket 111, the hinge ball 2 is mutually matched and abutted with the side wall of the hinge socket 111, and the hinge ball 2 extends out of the hinge socket 111 and is fixedly connected with one end of the linkage rod 21.

Adjusting gear 3 rotates and installs in the inside of circuit breaker casing 1, and adjusting gear 3 is located square 11 one side of two contacts 14 dorsad, and eccentric rod 31 is fixed in adjusting gear 3 and is close to the position at edge towards square 11 one side, and eccentric rod 31 leaves the interval with adjusting gear 3's the central axis. The square block 11 is provided with a circular avoidance groove 112 towards one side of the adjusting gear 3, the avoidance groove 112 is communicated with the hinge socket 111, one end of the eccentric rod 31 far away from the adjusting gear 3 extends into the avoidance groove 112 and is fixedly connected with the hinge ball 2, one ends of the eccentric rod 31 and the linkage rod 21 close to the hinge ball 2 coincide with the same central axis of the hinge ball 2 respectively, and the eccentric rod 31 is abutted against the side wall of the avoidance groove 112. The central axes of the adjusting gear 3 and the hinge ball 2 are coincident with each other, the rotating central line of the hinge ball 2 is coincident with the central axis of the adjusting gear 3, the adjusting gear 3 is driven to rotate by the driving device, and the adjusting gear 3 can drive the eccentric rod 31 to move on the side wall of the avoiding groove 112 when rotating.

The driving device comprises a servo motor 16 and a driving gear 161, the servo motor 16 is fixedly installed inside the circuit breaker shell 1, an output shaft of the servo motor 16 is fixedly connected with the middle of the driving gear 161, the driving gear 161 is located on one side of the adjusting gear 3 and is meshed with the adjusting gear 3, and the servo motor 16 is located on the same side of the driving gear 161 and the adjusting gear 3. The servo motor 16 drives the driving gear 161 to rotate forward and backward, so as to drive the adjusting gear 3 and the eccentric rod 31 to rotate, and can drive the hinge ball 2 to drive the linkage rod 21 to do reciprocating swing around the central axis of the adjusting gear 3, and when the linkage rod 21 moves above different contacts 14 and abuts against different contacts 14, the opening and closing operation of the circuit breaker can be realized.

Circuit breaker housing 1's inside is fixed with two limiting plates 12, two limiting plates 12 are located the both sides in gangbar 21 removal route respectively, two limiting plates 12 all are located two contacts 14 one side of square piece 11 dorsad, overlap joint groove 121 has been seted up to the one side that two limiting plates 12 are close to each other, overlap joint groove 121 and contact 14 one-to-one, when gangbar 21 respectively with one of them contact 14 when butt each other, gangbar 21 mutually supports the overlap joint with corresponding overlap joint groove 121 respectively, limiting plate 12 is injectd gangbar 21 in the assigned position, can improve gangbar 21 and contact 14's conflict stability.

Considering that the servo motor 16 does not have a self-locking function when the circuit breaker stops working, two groups of clamping pieces 13 are fixed on the inner wall of the circuit breaker shell 1, two clamping pieces 13 in each group are arranged, two clamping pieces 13 in the same group are arranged correspondingly, each group of clamping pieces 13 is in one-to-one correspondence with the contacts 14, and the two clamping pieces 13 in the same group are both positioned between the contacts 14 and the limiting plate 12 on the same side of the linkage rod 21. The clamping pieces 13 are arranged in a wave shape, the middle parts of the two clamping pieces 13 in the same group are oppositely curved to form a semi-arc surface, and the linkage rod 21 can be fixedly clamped; the two clamping pieces 13 are arranged in a manner of inclining away from the end, connected with the breaker shell 1, of each clamping piece 13, so that the linkage rod 21 is conveniently led into the middle between the two clamping pieces 13, when the linkage rod 21 is abutted against one contact 14, the linkage rod 21 is simultaneously clamped into the middle of the two corresponding clamping pieces 13, the linkage rod 21 is fixed, and the clamping pieces 13 have certain elasticity, so that the linkage rod 21 can be conveniently separated.

Adjusting gear 3 is fixed with spliced pole 32 in the middle part of the one side of square piece 11 dorsad, the one end that adjusting gear 3 was kept away from to spliced pole 32 runs through circuit breaker casing 1's lateral wall, and can dismantle and be connected with action bars 4 that are located circuit breaker casing 1 lateral wall, the one end of action bars 4 is fixed with cross piece 41, the cross recess 321 has been seted up to the terminal surface that adjusting gear 3 was kept away from to spliced pole 32, cross piece 41 is pegged graft in the inside of cross recess 321, make action bars 4 can drive spliced pole 32 and adjusting gear 3 synchronous rotation, thereby realize the divide-shut brake of manual control circuit breaker.

The first magnet 411 is fixed on one surface, away from the operating rod 4, of the cross block 41, the second magnet 322 is fixed inside the cross groove 321, when the cross block 41 is inserted into the cross groove 321, the first magnet 411 and the second magnet 322 are abutted to each other, the magnetism attracts each other, and the connection between the operating rod 4 and the connecting column 32 can be enhanced.

Referring to fig. 1, pilot lamp 151 is installed to circuit breaker housing 1's lateral wall, and pilot lamp 151 and micro-gap switch 15 are coupled each other, and pilot lamp 151 can indicate staff's circuit breaker's divide-shut brake state, the staff's of being convenient for operation.

The implementation principle of the embodiment is as follows: utilize servo motor 16 drive driving gear 161 corotation or reversal, driving gear 161 drives adjusting gear 3 and rotates, eccentric rod 31 removes at the lateral wall of dodging groove 112, thereby it is rotatory around adjusting gear 3's the central axis to drive articulated ball 2 and gangbar 21, drive gangbar 21 removes between two contacts 14, when gangbar 21 respectively with the mutual butt of different contacts 14, with two clamping pieces 13 of a set of centre gripping respectively in the both sides of gangbar 21, fix gangbar 21, contact 14 gives micro-gap switch 15 with signal transmission, micro-gap switch 15 control circuit's divide-shut brake, realize the divide-shut brake operation of circuit breaker, the utility model has the advantages of simple structure, compactness, area occupied is little, and the equipment of being convenient for.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a linkage structure of circuit breaker, includes circuit breaker casing (1), its characterized in that: the inside of circuit breaker casing (1) is provided with response drive arrangement and gangbar (21), response drive arrangement includes micro-gap switch (15) and two contacts (14), micro-gap switch (15) and contact (14) are coupled each other, two contact (14) set up respectively in the inside both sides of circuit breaker casing (1), gangbar (21) are connected with its reciprocating motion of drive and arrive respectively with the transmission of two contact (14) looks butt positions.

2. The interlocking structure of a circuit breaker according to claim 1, characterized in that: the transmission device comprises an adjusting gear (3) and a hinge ball (2), the adjusting gear (3) is rotatably arranged in a breaker shell (1), a square block (11) is fixedly arranged in the breaker shell (1), the side wall of the square block (11) is provided with a hinge socket (111) which is rotatably connected with the hinge ball (2), the hinge ball (2) extends out of the side wall of the hinge socket (111) and is fixedly connected with one end of a linkage rod (21), the side wall of the square block (11) back to the hinge socket (111) is provided with an avoiding groove (112) communicated with the hinge socket (111), the adjusting gear (3) is fixedly provided with an eccentric rod (31) close to the edge position of the eccentric rod, one end of the eccentric rod (31) far away from the adjusting gear (3) extends into the avoiding groove (112) and is fixedly connected with the hinge ball (2), the eccentric rod (31) and the side wall of the avoiding groove (112) are mutually abutted, one ends of the eccentric rods (31) and the linkage rods (21) close to the hinged balls (2) are overlapped with the same central axis of the hinged balls (2), and the adjusting gear (3) is connected with a driving device for driving the adjusting gear to rotate.

3. The interlocking structure of a circuit breaker according to claim 2, characterized in that: the driving device comprises a servo motor (16) fixedly arranged inside the breaker shell (1) and a driving gear (161) fixedly connected with an output shaft of the servo motor (16), and the driving gear (161) is meshed with the adjusting gear (3).

4. A linkage structure of a circuit breaker according to claim 3, wherein: the middle part of adjusting gear (3) is fixed and is provided with spliced pole (32) that runs through circuit breaker casing (1) lateral wall, the one end that spliced pole (32) stretched out circuit breaker casing (1) is connected with action bars (4).

5. The interlocking structure of a circuit breaker according to claim 4, characterized in that: the operating rod (4) is detachably connected with the connecting column (32), the operating rod (4) is fixedly provided with a cross block (41), and a cross groove (321) which is matched and connected with the cross block (41) in an inserting mode is formed in one end face, far away from the adjusting gear (3), of the connecting column (32).

6. The interlocking structure of a circuit breaker according to claim 5, characterized in that: one end of the cross block (41) far away from the operating rod (4) is fixedly provided with a first magnet (411), and a second magnet (322) which is magnetically attracted with the first magnet (411) is fixedly arranged in the cross groove (321).

7. The interlocking structure of a circuit breaker according to claim 1, characterized in that: the inside of circuit breaker casing (1) is fixed and is provided with two sets of clamping pieces (13), every group clamping piece (13) are provided with two, and are with a set of clamping piece (13) correspond each other with contact (14), work as when gangbar (21) and one of them contact (14) looks butt, corresponding with a set of two clamping pieces (13) fixed centre gripping respectively in the both sides of gangbar (21), with a set of two one end slope mutually opposite directions that circuit breaker casing (1) inner wall was kept away from in clamping piece (13) sets up.

8. The interlocking structure of a circuit breaker according to claim 1, characterized in that: the inside of circuit breaker casing (1) is fixed and is provided with two limiting plates (12), two limiting plate (12) are close to one side each other and all set up with interlocking bar (21) overlap joint groove (121) that overlap joint each other, two overlap joint groove (121) are corresponding with contact (14) respectively, work as when interlocking bar (21) and one of them contact (14) looks butt, interlocking bar (21) overlap joint with corresponding overlap joint groove (121) mutually.