CN210443512U

CN210443512U - Circuit breaker tripping structure convenient to install

Info

Publication number: CN210443512U
Application number: CN201921369074.7U
Authority: CN
Inventors: 胡文明; 胡乐和; 包瑞
Original assignee: Shanghai Changcheng Switch Factory Co ltd
Current assignee: Shanghai Changcheng Switch Factory Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-05-01
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a circuit breaker tripping structure convenient to installation, including casing, electro-magnet, switch module, indicator, tripping member and hasp, the indicator is installed in the casing, and one end is equipped with the pothook, and the reset spring through the middle part setting is to the activity of propping up mutually outside the casing, tripping member and one end of electromagnetism can actuation to be provided with the torsional spring that drives tripping member all the time and keep away from the electro-magnet direction rotation; when the electromagnet is attracted with the release piece, the switch component is in a closing state, and the clamping hook is buckled with the release piece to limit the indicating piece; when the electromagnet is separated from the tripping piece, the switch component is switched off, the tripping piece is separated from the clamping hook under the drive of the torsion spring and abuts against the lock catch, the indicating piece is popped up, and the lock catch abuts against the switch component in the switching-off state under the action of the tripping piece, so that the switch component is in the locking state and cannot rotate. The utility model discloses simple structure, assembly are easy, simple to operate, and the transmission is reliable simultaneously, makes the advantage of circuit breaker can reliable work.

Description

Circuit breaker tripping structure convenient to install

Technical Field

The utility model relates to a circuit breaker field especially relates to a circuit breaker dropout structure convenient to installation.

Background

When a fault occurs in an electric power system, a high fault current corresponding to several tens of times of a rated current may flow due to a rapid reduction in load resistance. When the power system is in fault, the leakage breaker is required to rapidly and automatically cut off the fault current when the predetermined value is exceeded, so that damage caused by overload or short circuit in the circuit is prevented. In the structure of the circuit breaker, a tripping structure is an important component.

At present, various circuit breakers used for circuit protection have complex tripping structures, difficult installation and high cost generated in the processes of manufacturing, assembling and debugging, and simultaneously have the problems of transmission delay, incapability of corresponding in a short time and enough space left for accident potential.

SUMMERY OF THE UTILITY MODEL

The utility model provides a circuit breaker dropout structure, it is not enough to prior art, the utility model provides a circuit breaker dropout structure has simple structure, the assembly is easy, simple to operate, and the transmission is reliable simultaneously, makes the advantage that the circuit breaker can reliable work.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a circuit breaker dropout structure convenient to installation, includes the casing, sets up electro-magnet, rotatable switch module that sets up on the casing in the casing and can slide and set up the indicator in the casing, the one end of indicator is equipped with the pothook, and the middle part is equipped with reset spring and accessible reset spring and supports the activity, its characterized in that with the indicator outside the casing mutually: the electromagnetic clutch is characterized by also comprising a release piece and a lock catch which are respectively and rotatably arranged on the shell, wherein the release piece can be attracted with one end of the electromagnet, and a torsion spring which always drives the release piece to rotate in the direction away from the electromagnet is arranged on the release piece; when the electromagnet and the release piece are in an attraction state, the switch component is in a closing state, and the clamping hook and the release piece are buckled to limit the indicating piece; when the electromagnet and the tripping piece are in a tripping state, the switch component is switched off, the tripping piece rotates in the circumferential direction under the drive of the torsion spring, the tripping piece is separated from the clamping hook and abuts against the lock catch, the indicating piece is popped up under the action of the reset spring, and the lock catch rotates in the circumferential direction under the action of the tripping piece and then abuts against the switch component in the switching-off state, so that the switch component is in a locking state and cannot rotate.

Preferably, the tripping part is provided with a side plate and a clamping rod at intervals in the circumferential direction, the electromagnet and the clamping hook are respectively positioned at the upper side and the lower side of the tripping part, the side plate is close to the electromagnet and can be attracted with the electromagnet, and the clamping rod is close to the clamping hook and can be matched with the clamping hook in a fastening way.

Preferably, the outer edge of the hook tip of the hook is a plane, and when the indicating piece is in an ejecting state, the plane is abutted against the upper part of the clamping rod, so that the tripping piece is limited and cannot be driven by the electromagnet to rotate and suck.

Preferably, one end of the lock catch is provided with a convex cylinder, and the side wall of the switch component is provided with a notch matched with the shape of the cylinder. When the side plate abuts against the lock catch to rotate in place, the clamping rod is abutted by the plane, and meanwhile, the cylinder is embedded into the notch to enable the switch assembly to be in a locked state and cannot rotate.

Preferably, still including the fixed first spacing boss that sets up on the casing, when the curb plate contradicts the hasp rotation and targets in place, the hasp is inconsistent with first spacing boss.

Preferably, the indication device further comprises a second limit boss fixedly arranged on the shell, one end of the indication piece, extending out of the shell, is bent to form a blocking part, a third limit boss opposite to the second limit boss is arranged on the indication piece, and when the indication piece is popped out after being separated from the buckling state, the second limit boss is abutted against the third limit boss to limit the indication piece from being further popped out; when the indicator is reset by being pressed from the ejecting state, the blocking part is abutted against the shell to limit the indicator to further displace.

Preferably, a plurality of semi-cylindrical prismatic tables are arranged on the upper plane and the lower plane of the shell, which are in contact with the indicating piece, along the direction of ejecting the indicating piece, and the prismatic tables are in sliding contact with the indicating piece.

Compared with the prior art, the beneficial effects of the utility model are that: simple structure, easy assembly, convenient installation, reliable transmission and reliable work of the circuit breaker.

Drawings

Fig. 1 is the utility model discloses a circuit breaker dropout structure assembly schematic diagram convenient to installation.

Fig. 2 is a schematic view of the indicator member of fig. 1 in a reset state.

Fig. 3 is a schematic view of the indicator of fig. 1 in a tripped state.

Fig. 4 is an enlarged schematic view of M in fig. 1.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, a circuit breaker tripping structure convenient to install includes a housing 1, an electromagnet 5 disposed in the housing 1, a switch assembly 16 rotatably disposed on the housing 1, and an indicator 2 slidably disposed in the housing 1, wherein one end of the indicator 2 is provided with a hook 7, the middle portion is provided with a return spring 3, and the indicator 2 can be abutted to the outside of the housing 1 through the return spring 3, and the circuit breaker tripping structure is characterized in that: the electromagnetic locking device is characterized by further comprising a release piece 4 and a lock catch 6 which are respectively and rotatably arranged on the shell 1, wherein the release piece 4 can be attracted with one end of the electromagnet 5, and a torsion spring 9 which is used for driving the release piece 4 to rotate in the direction away from the electromagnet 5 all the time is arranged on the release piece 4; when the electromagnet 5 and the release piece 4 are in an attraction state, the switch component 16 is in a closing state, and the hook 7 and the release piece 4 are buckled to limit the indicator 2; when the electromagnet 5 and the release piece 4 are in a release state, the switch component 16 is switched off, the release piece 4 rotates in the circumferential direction under the drive of the torsion spring 9, is separated from the contact with the hook 7 and abuts against the lock catch 6, the indicating piece 2 is popped up under the action of the reset spring 3, the lock catch 6 rotates in the circumferential direction under the action of the release piece 4 and then abuts against the switch component 16 in the switch-off state, and the switch component 16 is locked and cannot rotate. When the power system normally works, the circuit breaker does not work, and when the electromagnet 5 and the release fastener 4 are in an attraction state, the attraction force is greater than the driving force of the torsion spring 9; when the power system has a fault, the breaker detects fault current, the switch assembly 16 is switched off, the electromagnet 5 does not generate suction force and is separated from the release piece 4, and the torsion spring 9 drives the release piece 4 to rotate; the rotation of the release fastener 4 can release the contact with the hook 7 to release the hook on one hand, so that the indicator 2 is ejected to play an indicating role; on the other hand, the release member 4 can abut against the lock catch 6, so that the lock catch 6 is rotated to abut against the switch assembly 16, the switch 16 which is switched off is in a locked state, and the switch cannot be switched on before the fault removal indicator 2 is reset, and the effect of protecting the safety of a circuit and a maintainer is achieved. The positions of the release piece, the lock catch and the indicating piece on the shell are relatively determined, so that the assembly is simple and the installation is convenient; meanwhile, the number of parts is small, the structure is simple, the transmission mode among the parts is simple mechanical transmission, the transmission is timely, and the reliability is high.

As an improved specific implementation manner, a side plate 8 and a clamping rod 10 are arranged on the release member 4 at intervals in the circumferential direction, the electromagnet 5 and the clamping hook 7 are respectively located at the upper side and the lower side of the release member 4, the side plate 8 is arranged close to the electromagnet 5 and can be attracted with the electromagnet 5, and the clamping rod 10 is arranged close to the clamping hook 7 and can be matched with the clamping hook 7 in a fastening manner. The functions of attracting the release fastener 4 and the electromagnet 2 and fastening the hook 7 are realized through the side plates 8 and the clamping rods 10 which are arranged on different sides of the circumference respectively, so that the release fastener 4 can exert more reliable functions.

As an improved specific embodiment, the outer edge of the hook tip of the hook 7 is a plane 15, and when the indicator 2 is in the pop-up state, the plane 15 abuts against the upper portion of the clamping rod 10, so that the release member 4 is limited and cannot be driven by the electromagnet 5 to rotate and attract. After the indicating piece 2 is popped up, the function of indicating circuit faults is achieved; when the indicator 2 is not reset, the outer edge plane 15 of the hook tip of the hook 7 is abutted against the clamping rod 10, so that the release part 4 is limited and can not rotate.

As a modified embodiment, one end of the lock catch 6 is provided with a protruding column 11, and the side wall of the switch assembly 16 is provided with a notch 12 matched with the shape of the column 11. When the side plate 8 is rotated to the proper position against the latch 6, the latch 10 is pressed against the flat surface 15, and the post 11 is inserted into the notch 12 to lock the switch assembly 16. Under the condition that the indicator 2 is popped up, the release part 4 is limited and cannot rotate; after the lock catch 6 is abutted by the side plate 8 to rotate and limit displacement, the other side of the lock catch is embedded into the notch 12 of the switch component 16, so that the switch component 16 cannot rotate and is locked in a switching-off state, and the switch component 16 cannot be switched on under the conditions that a circuit is not overhauled and completed and the indicating piece 4 is not reset, so that the safety protection effect is achieved.

As a modified embodiment, the improved structure further comprises a first limiting boss 14 fixedly arranged on the shell 1, and when the side plate 8 abuts against the lock catch 6 and rotates in place, the lock catch 6 abuts against the first limiting boss 14. One end of the lock catch 6 is abutted by the side plate 8, the other end of the lock catch 6 is abutted by the first limiting boss 14, and circumferential motion cannot be achieved, so that the opening and locking states of the switch assembly 16 abutted by the lock catch 6 are more stable.

As an improved specific implementation manner, the electronic device further comprises a second limiting boss 17 fixedly arranged on the shell 1, one end of the indicating piece 2, which extends out of the shell 1, is bent to form a blocking part 19, a third limiting boss 18 opposite to the second limiting boss 17 is arranged on the indicating piece 2, and when the indicating piece 2 is popped out after being out of a buckling state, the second limiting boss 17 is abutted against the third limiting boss 18 to limit the indicating piece 2 to be further popped out; when the indicator 2 is reset by being pressed from the pop-up state, the interference portion 19 interferes with the housing 1, and the indicator 2 is restricted from further displacement. The second limit boss 17 and the third limit boss 18 limit the position of the indicator 2 when the indicator 2 is popped out, and the blocking part 19 limits the position of the indicator 2 when the indicator 2 is reset, so that the popping and resetting position states of the indicator 2 are more accurate in positioning.

As a modified embodiment, a plurality of semi-cylindrical bosses 13 are arranged on the upper and lower planes of the shell 1, which are contacted with the indicator 2, along the direction of ejecting the indicator 2, and the bosses 13 are in sliding contact with the indicator 2. Through terrace with edge 13 and indicator 2 sliding contact, reduce the area of contact of indicator 2 when popping out or reseing, and then reduce frictional force, make the relative motion of casing 1 of indicator 2 more smooth and easy.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a circuit breaker dropout structure convenient to installation, includes casing (1), sets up electro-magnet (5) in casing (1), rotatable switch module (16) that sets up on casing (1) and can slide and set up indicator (2) in casing (1), the one end of indicator (2) is equipped with pothook (7), and the middle part is equipped with reset spring (3) and accessible reset spring (3) with indicator (2) to casing (1) outer activity of supporting mutually, its characterized in that: the electromagnetic locking device is characterized by further comprising a release piece (4) and a lock catch (6) which are respectively and rotatably arranged on the shell (1), wherein the release piece (4) can be attracted with one end of the electromagnet (5), and a torsion spring (9) which always drives the release piece (4) to rotate in the direction away from the electromagnet (5) is arranged on the release piece (4); when the electromagnet (5) and the release piece (4) are in an attraction state, the switch component (16) is in a closing state, and the hook (7) and the release piece (4) are buckled to enable the indicating piece (2) to be limited; when the electromagnet (5) and the tripping piece (4) are in a tripping state, the switch component (16) is switched off, the tripping piece (4) rotates in the circumferential direction under the drive of the torsion spring (9), and is separated from the clamping hook (7) and abutted against the lock catch (6), the indicating piece (2) pops up under the action of the reset spring (3), and the lock catch (6) rotates in the circumferential direction under the action of the tripping piece (4) and is abutted against the switch component (16) in the switching-off state, so that the switch component (16) is in a locking state and cannot rotate.

2. The circuit breaker trip structure of claim 1, which facilitates installation, wherein: lateral plates (8) and clamping rods (10) are arranged on the release piece (4) at intervals in the circumferential direction, the electromagnet (5) and the clamping hook (7) are respectively located on the upper side and the lower side of the release piece (4), the lateral plates (8) are close to the electromagnet (5) and can be attracted with the electromagnet (5), and the clamping rods (10) are close to the clamping hook (7) and can be matched with the clamping hook (7) in a fastening mode.

3. The circuit breaker trip structure of claim 2, wherein: the outer edge of the hook tip of the clamping hook (7) is a plane (15), when the indicating piece (2) is in an ejecting state, the plane (15) is abutted against the upper part of the clamping rod (10), so that the tripping piece (4) is limited and cannot be driven by the electromagnet (5) to rotate for suction.

4. The circuit breaker trip structure of facilitating installation of claim 3, wherein: hasp (6) one end is equipped with convex cylinder (11), switch module (16) lateral wall is equipped with and cylinder (11) shape matched with breach (12), and when conflicting hasp (6) rotation to the position in curb plate (8), kelly (10) are contradicted by plane (15), and cylinder (11) embedding breach (12) makes switch module (16) be in the unable rotation of locking state simultaneously.

5. The circuit breaker trip structure of claim 4, wherein: still including fixed first spacing boss (14) of setting on casing (1), when curb plate (8) were contradicted hasp (6) and are rotated to target in place, hasp (6) and first spacing boss (14) are inconsistent.

6. The circuit breaker trip structure of claim 1 or 2, which facilitates installation, wherein: the indication device is characterized by further comprising a second limiting boss (17) fixedly arranged on the shell (1), one end, extending out of the shell (1), of the indication piece (2) is bent to form a blocking part (19), a third limiting boss (18) opposite to the second limiting boss (17) in position is arranged on the indication piece (2), when the indication piece (2) is popped out after being separated from a buckling state, the second limiting boss (17) is abutted against the third limiting boss (18), and the indication piece (2) is limited from being further popped out; when the indicator (2) is reset by being pressed from the ejecting state, the blocking part (19) is abutted against the shell (1) to limit the further displacement of the indicator (2).

7. The circuit breaker trip structure of claim 1, which facilitates installation, wherein: on the upper and lower plane of casing (1) and indicator (2) contact, be equipped with a plurality of halfcylinders terrace with edges (13) along the direction that indicator (2) popped out, terrace with edges (13) and indicator (2) sliding contact.