CN219677173U - Operating mechanism of circuit breaker and circuit breaker - Google Patents

Abstract

The utility model provides an operating mechanism of a circuit breaker and the circuit breaker, and relates to the technical field of low-voltage appliances. The two of hasp are located the tripping point of center of rotation both sides respectively for the structure of hasp is balanced, and then when the hasp rotated, operating device's moment of inertia reduces, and then has improved operating device's performance, makes contact system respond in time, in time breaks brake under emergency, has guaranteed the safety in utilization of circuit breaker.

Description

Operating mechanism of circuit breaker and circuit breaker

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to an operating mechanism of a circuit breaker and the circuit breaker.

Background

A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and closing, carrying and breaking a current under abnormal circuit conditions within a prescribed time. In a circuit breaker, an operating mechanism is generally operated through a handle, so that a contact system is driven to switch on and off. When the existing operating mechanism is driven to act through the handle, the rotational inertia of the operating mechanism is large, the performance of the operating mechanism is affected, and then the contact system can not respond timely, so that the opening and closing operation is delayed, and certain potential safety hazards are caused.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide an operating mechanism of a circuit breaker and the circuit breaker, so as to solve the problem of large moment of inertia of the operating mechanism and improve the performance of the operating mechanism.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the utility model is as follows:

in one aspect of an embodiment of the present utility model, there is provided an operating mechanism of a circuit breaker, including: the operation subassembly, jump knot and the hasp that the linkage set up, the hasp has the first trip point and the second trip point that are located the rotation center both sides of hasp, the hasp is used for connecting the moving contact, first trip point is used for the linkage with the tripping system, realizes short circuit tripping and electric leakage tripping, the second trip point is used for with double-gold linkage, realizes overload delay tripping.

Optionally, the first trip point and the second trip point are symmetrically arranged along the rotation center of the lock catch; the center of rotation of the latch and the center of mass of the latch coincide or nearly coincide.

Optionally, the second trip point is further used for being linked with an unlocking piece to realize unlocking trip.

Optionally, the latch forms an L-shaped structure, the trip system is located at the left side of the latch and the double-gold is located at the right side of the latch along the length direction of the circuit breaker.

Optionally, the tripping system is provided with a push rod, and the push rod is abutted with the first tripping point of the lock catch so as to enable the lock catch to be tripped from the trip catch.

Optionally, the double-gold is arranged along the height direction of the circuit breaker, one end of the double-gold extends towards the arc striking plate, and the other end of the double-gold is used for abutting against the second tripping point of the lock catch.

Optionally, the unlocking piece and the double Jin Cuokai are arranged so that the end part of the unlocking piece has a state of abutting against the second tripping point of the lock catch, and the unlocking piece is pressed to enable the lock catch to be tripped from the trip buckle.

Optionally, the operation assembly includes operating button and with operating button connects the handle, operating button is horizontal setting when closing a floodgate, the handle pass through the connecting rod with jump is detained and is connected.

Optionally, be provided with the gear on the handle, one side of handle still be provided with gear complex gear train, remote control mechanism with the gear train is connected to realize long-range divide-shut brake.

Optionally, square holes are respectively arranged on the operation button and the handle and are used for connecting a plurality of parallel circuit breakers so as to realize linkage of the multipole circuit breakers.

In another aspect of the embodiment of the utility model, a circuit breaker is provided, which comprises the operating mechanism and the contact system of the circuit breaker, wherein a lock catch of the operating mechanism of the circuit breaker is linked with a moving contact of the contact system.

The beneficial effects of the utility model include:

the utility model provides an operating mechanism of a circuit breaker, which is characterized in that an operating assembly, a trip button and a lock catch are arranged in a linkage way, the trip button is operated by the operating assembly to drive the lock catch to rotate, and the lock catch is in linkage with a moving contact, so that the moving contact and a fixed contact are contacted to be switched on or separated to be switched off. The lock catch is provided with a first tripping point and a second tripping point, the first tripping point and the second tripping point are respectively positioned at two sides of the rotating center of the lock catch, the first tripping point is linked with the tripping system, the first tripping point is triggered by the tripping system, so that the lock catch rotates and trips the trip, and the short-circuit tripping and the electric leakage tripping are completed; the second tripping point is linked with double gold, the lock catch is enabled to rotate to trip with the trip through the double Jin Chufa second tripping point, and the double gold is used for realizing overload delay tripping; the emergency trip in each of the above cases serves to protect the circuit breaker circuit. And the two tripping points of the lock catch are positioned on two sides of the rotating center, so that the structure of the lock catch is balanced, and when the lock catch rotates, the rotational inertia of the operating mechanism is reduced, and the performance of the operating mechanism is improved, so that the contact system can respond in time, and the switch-off is timely performed under the emergency condition, and the use safety of the circuit breaker is ensured.

The circuit breaker comprises the operating mechanism and the contact system of the circuit breaker, and the lock catch of the operating mechanism of the circuit breaker is linked with the moving contact of the contact system.

When the circuit breaker works normally, the handle, the trip button and the lock catch are sequentially operated by pressing the operation button, and the lock catch drives the moving contact and the static contact to contact and close or separate and break the switch; the remote control on-off can be realized through a remote control mechanism. When the circuit breaker is abnormal, such as short circuit or electric leakage, the tripping system drives the lock catch to trip the opening gate; when overload occurs, the double-gold driving lock catch is used for releasing the lock catch to open the brake, so that the safe use of the circuit breaker under various conditions is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a closing state of an operating mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a switching-off state of an operating mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a latch structure of an operating mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 4 is a second schematic diagram of a latch structure of an operating mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 5 is a trip system trip schematic diagram of an operating mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of double-gold trip of an operating mechanism of a circuit breaker according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of unlocking piece release of an operating mechanism of a circuit breaker according to an embodiment of the present utility model.

Icon: 100-operating an assembly; 101-operating a button; 102-a handle; 102 a-gear; 103. 104-a connecting rod; 105-gear set; 106-square holes; 201-jumping buckle; 200-a mechanism seat; 202-locking; 202 a-a first trip point; 202 b-a second trip point; 301-a moving contact; 302-stationary contact; 400-tripping system; 401-short circuit release; 402-leakage release; 403-ejector rod; 501-double gold; 502-unlocking piece; 503-an arc striking plate; s-a rotation center; h-height direction; l-length direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. It should be noted that, under the condition of no conflict, the features of the embodiments of the present utility model may be combined with each other, and the combined embodiments still fall within the protection scope of the present utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The rotational inertia of the existing operating mechanism is large, and the performance of the operating mechanism is affected. In view of this, in order to solve the problem, an aspect of an embodiment of the present utility model, referring to fig. 1, provides an operating mechanism (hereinafter, abbreviated as an operating mechanism) of a circuit breaker, including: the operation assembly 100, the trip 201 and the lock catch 202 are arranged in a linkage mode, the lock catch 202 is provided with a first trip point 202a and a second trip point 202b which are positioned on two sides of a rotation center S of the lock catch 202, the lock catch 202 is used for connecting the moving contact 301, the first trip point 202a is used for being in linkage with the trip system 400 to achieve short-circuit trip and leakage trip, and the second trip point 202b is used for being in linkage with the double-metal 501 to achieve overload delay trip.

The operation assembly 100 is used for operating the jump buckle 201 to act, so that the lock catch 202 rotates, and the lock catch 202 rotates to drive the moving contact 301 to act, so that the moving contact 301 and the fixed contact 302 are contacted and closed (shown in fig. 1) or the moving contact 301 and the fixed contact 302 are separated and separated (shown in fig. 2). Each component of the operating mechanism is arranged in the breaker shell, the mechanism seat 200 is arranged in the shell, and the trip buckle 201, the lock catch 202 and the moving contact 301 are all arranged on the mechanism seat 200. Wherein springs are respectively arranged between the lock catch 202 and the mechanism seat 200 and between the mechanism seat 200 and the shell for resetting.

It should be emphasized that, as shown in fig. 3 and fig. 4, the latch 202 of the present utility model has two trip points, namely a first trip point 202a and a second trip point 202b, and the first trip point 202a and the second trip point 202b are located at two sides of the rotation center S of the latch 202. Illustratively, the first trip point 202a is located at the left side of the rotation center S, and the second trip point 202b is located at the right side of the rotation center S, so as to reduce the moment of inertia of the operating mechanism, thereby improving the performance of the operating mechanism.

The first trip point 202a is linked with the trip system 400, and the trip system 400 has a push rod 403, and the push rod 403 abuts against the first trip point 202a of the latch 202, so that the latch 202 is tripped from the trip 201.

Specifically, as shown in fig. 5, the trip system 400 includes a short-circuit tripper 401 and a leakage tripper 402, where the short-circuit tripper 401 is used to trip in the case of a short circuit of a circuit to protect the circuit; the leakage release 402 drives the operating mechanism to release under the condition of circuit leakage, and both the short circuit release and the leakage release can realize release under remote control.

For example, the short-circuit release 401 and the leakage release 402 share one ejector 403, and the ejector 403 pushes the first release point 202a of the latch 202 to drive the latch 202 to rotate, so that the latch 202 and the trip 201 are tripped, and the moving contact 301 and the fixed contact 302 are separated, thereby completing the trip.

The second trip point 202b is also used for being linked with the unlocking piece 502 to realize unlocking trip besides being linked with the double-metal 501.

The second trip point 202b is linked with the double-metal 501 and the unlocking piece 502, and the double-metal 501 is used for being heated, bent and deformed under the overload condition of the circuit, and then triggers the second trip point 202b to rotate, so that the overload trip or overload delay trip is completed.

The unlocking piece 502 can be used for manual operation, and the unlocking piece 502 is manually pressed, so that the unlocking piece 502 acts on the second tripping point 202b, and further the lock catch 202 is driven to rotate, and unlocking tripping is achieved.

The first trip point 202a and the second trip point 202b of the lock catch 202 can complete emergency trip under different conditions, so that the circuit safety of the circuit breaker is protected.

Thus, in the operating mechanism of the circuit breaker provided by the embodiment of the utility model, the operating assembly 100, the trip buckle 201 and the lock catch 202 are arranged in a linkage manner, the trip buckle 201 is operated by the operating assembly 100 to act, and then the lock catch 202 is driven to rotate, the lock catch 202 is linked with the moving contact 301, so that the moving contact 301 is contacted with the fixed contact 302 to be switched on or separated to be switched off. The lock catch 202 has a first trip point 202a and a second trip point 202b, the first trip point 202a and the second trip point 202b are respectively located at two sides of a rotation center S of the lock catch 202, the first trip point 202a is linked with the trip system 400, the first trip point 202a is triggered by the trip system 400, so that the lock catch 202 rotates to trip the trip 201, and short circuit trip and leakage trip are completed; the second trip point 202b is respectively linked with the double-metal 501 and the unlocking piece 502, the second trip point 202b is triggered by the double-metal 501 or the unlocking piece 502, the lock catch 202 is enabled to rotate to be tripped with the trip 201, the double-metal 501 is used for realizing overload delay trip, and the unlocking piece 502 is used for completing unlocking trip; the emergency trip in each of the above cases serves to protect the circuit breaker circuit. And two tripping points of the lock catch 202 are positioned on two sides of the rotating center S, so that the structure of the lock catch 202 is balanced, and when the lock catch 202 rotates, the rotational inertia of an operating mechanism is reduced, and the performance of the operating mechanism is improved, so that a contact system can respond in time, and the circuit breaker is opened in time under an emergency condition, and the use safety of the circuit breaker is ensured.

Further, the first trip point 202a and the second trip point 202b are symmetrically disposed along the rotation center S of the shackle 202; the center of rotation S of the shackle 202 and the center of mass of the shackle 202 coincide or nearly coincide. The first trip point 202a and the second trip point 202b are symmetrical and balanced along the rotation center S, so that the moment of inertia of the operating mechanism is further reduced, and the performance of the operating mechanism is improved. And because the second trip point 202b of the latch 202 directly acts with the double-metal 501, compared with the prior art, a traction rod for connecting the latch 202 and the double-metal 501 is reduced, the rotation center S and the mass center are balanced, the two are overlapped in a limiting way, and the rotation inertia of the mechanism is reduced.

As shown in fig. 3, the latch 202 forms an L-shaped structure, and the trip system 400 is located on the left side of the latch 202, and the double gold 501 and the unlocking piece 502 are located on the right side of the latch 202 along the length direction L of the circuit breaker.

Specifically, the latch 202 forms an inverted L-like structure, and an obtuse angle slightly greater than 90 degrees is formed between two sides of the L-shape, in other words, two sides of the L-shape are obliquely disposed, one side is inclined toward the lower left and acts with the trip system 400, and the other side is inclined toward the upper right and acts with the bimetal 501 and the unlocking piece 502.

In terms of the layout of the operating mechanism, the trip system 400 is horizontally disposed on the left side of the latch 202, and the double gold 501 and the unlocking piece 502 are both located on the right side of the latch 202. The double gold 501 is disposed along the height direction H of the circuit breaker, and one end of the double gold 501 extends toward the striking plate 503, and the other end extends upward to be abutted against the second trip point 202b of the latch 202.

During normal operation, the upper end of the double-gold 501 is not contacted with the second tripping point 202b of the lock catch 202, when the circuit is overloaded, the double-gold 501 is heated and bent, the upper end of the double-gold 501 bends towards the second tripping point 202b of the lock catch 202 and is propped against the second tripping point 202b, and the double-gold 501 continues to bend to drive the lock catch 202 to rotate, so that overload delay tripping is completed.

As can be seen from fig. 6, when the double-gold 501 is vertically arranged along the height direction H, the upper end of the double-gold 501 is slightly higher than the lock catch 202, and the lower end of the double-gold 501 exceeds the moving contact 301 and is connected with the striking plate 503.

Since the double-gold 501 and the unlocking piece 502 both act with the second trip point 202b of the latch 202, the unlocking piece 502 and the double-gold 501 are staggered, so that the end of the unlocking piece 502 has a state of abutting against the second trip point 202b of the latch 202, and the unlocking piece 502 is pressed to enable the latch 202 to be tripped from the trip 201.

The double-metal 501 is used for circuit overload delay trip, and the unlocking piece 502 is used for manual intervention unlocking trip, so that the double-metal 501 and the unlocking piece 502 can respectively have a state of abutting against the second trip point 202b of the lock catch 202 to act on the lock catch 202 to trip.

As can be seen in fig. 7, the upper portion of the unlocking member 502 is a V-shaped structure, one end of the V-shaped structure is used for abutting against the second trip point 202b of the latch 202 to release, the other end of the V-shaped structure is used for manual operation, and the other end of the V-shaped structure is pressed to operate the unlocking member 502, so that the unlocking member 502 presses the second trip point 202b of the latch 202 to unlock and release.

On this basis, the operating assembly 100 of the present utility model includes an operating button 101 and a handle 102 connected to the operating button 101, the operating button 101 being horizontally disposed at the time of closing, the handle 102 being connected to a trip 201 through a link 104.

The operation button 101 is used for pressing operation, the operation button 101 is horizontally arranged to be flush with the top of the shell of the circuit breaker when the circuit breaker is closed (fig. 1), the operation button 101 is connected with the handle 102 through the connecting rod 103, the handle 102 is connected with the trip buckle 201 through the other connecting rod 104, so that the action of the operation button 101 is transferred to the handle 102, and then the trip buckle 201 acts on the lock buckle 202.

As shown in fig. 1, when the operation button 101 is pressed to rotate counterclockwise, the circuit breaker is closed; as shown in fig. 2, when the operation button 101 is pressed to rotate clockwise, the circuit breaker is opened. Through setting up operating button 101, can be with the divide-shut brake operation of current 90 degrees, change into operating button 101's 20 degrees divide-shut brake operations, operating button 101 only need rotate 20 degrees, can accomplish the divide-shut brake, has reduced the stroke of divide-shut brake, has stabilized operating mechanism system.

In addition, the handle 102 is in a truncated cone structure, a gear 102a formed by a plurality of teeth extends out of the peripheral wall of the handle 102, a gear set 105 matched with the gear 102a is further arranged on one side of the handle 102, and the remote control mechanism is connected with the gear set 105 so as to realize remote control on-off.

The gear set 105 may include a gear, the gear set 105 may be formed by sequentially engaging and driving a plurality of gears, the first gear in the gear set 105 is connected with the remote control mechanism, and the last gear in the gear set 105 is engaged and driven with the gear 102a of the handle 102, so that the remote control mechanism drives the handle 102 to act through the gear set 105 and the gear 102a, and further the lock catch 202 acts, thereby realizing remote control on/off.

Further, the circuit breaker may be a multipole circuit breaker, the multipole circuit breaker includes a plurality of circuit breakers arranged in parallel, and square holes 106 are respectively provided on the operation button 101 and the handle 102 for connecting the plurality of circuit breakers in parallel to realize linkage of the multipole circuit breaker.

Square shaft is arranged in the square hole 106 and connected with a plurality of parallel circuit breakers to drive the multipole circuit breakers to synchronously switch on and off. Of course, the utility model is not limited by square shaft, circular shaft, polygonal shaft, etc., as long as linkage can be realized; correspondingly, the hole changes its shape according to the shape of the shaft, matching the shaft.

On the other hand, the embodiment of the utility model also provides a circuit breaker, which comprises the operating mechanism and the contact system of the circuit breaker, wherein the lock catch 202 of the operating mechanism of the circuit breaker is linked with the moving contact 301 of the contact system.

When the circuit breaker works normally, the handle 102, the trip buckle 201 and the lock catch 202 are sequentially operated by pressing the operation button 101, the lock catch 202 drives the moving contact 301 and the fixed contact 302 to contact and close or separate and open, and the handle 102 is operated by the remote control mechanism to realize remote control of opening and closing.

When the circuit breaker is abnormal, such as short circuit or electric leakage, the tripping system 400 drives the lock catch 202 to trip and open; when overload occurs, the lock catch 202 is driven by the double-metal 501 to release and brake; when emergency manual intervention brake release is needed, the unlocking piece 502 is pressed to drive the lock catch 202 to release the brake release, so that the safe use of the circuit breaker under various conditions is ensured.

The circuit breaker includes the same structure and advantageous effects as the operating mechanism of the circuit breaker in the foregoing embodiment. The structure and the beneficial effects of the operating mechanism of the circuit breaker have been described in detail in the foregoing embodiments, and are not described in detail herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (11)

1. An operating mechanism for a circuit breaker, comprising: the operation assembly (100), the jump button (201) and the hasp (202) that the linkage set up, hasp (202) have be located first trip point (202 a) and second trip point (202 b) of the rotation center (S) both sides of hasp (202), hasp (202) are used for connecting moving contact (301), first trip point (202 a) are used for with tripping system (400) linkage, realize short circuit tripping and electric leakage tripping, second trip point (202 b) are used for with double gold (501) linkage, realize overload delay tripping.

2. The operating mechanism of a circuit breaker according to claim 1, characterized in that said first trip point (202 a) and said second trip point (202 b) are symmetrically arranged along a rotation center (S) of said shackle (202); the center of rotation (S) of the shackle (202) and the center of mass of the shackle (202) coincide or nearly coincide.

3. The operating mechanism of the circuit breaker according to claim 1, wherein the second trip point (202 b) is further configured to be interlocked with an unlocking member (502) to implement an unlocking trip.

4. The operating mechanism of the circuit breaker according to claim 1, characterized in that the latch (202) forms an L-shaped structure, the trip system (400) being located on the left side of the latch (202) and the double gold (501) being located on the right side of the latch (202) along the length direction (L) of the circuit breaker.

5. The operating mechanism of a circuit breaker according to any of the claims 1 to 4, characterized in that the tripping system (400) has a push rod (403), whereby the catch (202) is tripped from the trip buckle (201) by abutment of the push rod (403) with the first trip point (202 a) of the catch (202).

6. The operating mechanism of the circuit breaker according to any one of claims 1 to 4, characterized in that the double gold (501) is arranged along the height direction (H) of the circuit breaker, one end of the double gold (501) extending towards the striking plate (503) and the other end being adapted to abut against the second trip point (202 b) of the catch (202).

7. The operating mechanism of the circuit breaker according to claim 3, characterized in that the unlocking piece (502) and the double-metal (501) are staggered, so that the end of the unlocking piece (502) has a state of abutting against a second tripping point (202 b) of the lock catch (202), and the unlocking piece (502) is pressed to enable the lock catch (202) to be tripped from the trip catch (201).

8. The operating mechanism of a circuit breaker according to claim 1, characterized in that the operating assembly (100) comprises an operating button (101) and a handle (102) connected to the operating button (101), the operating button (101) being arranged horizontally when switched on, the handle (102) being connected to the trip button (201) by means of a connecting rod (104).

9. The operating mechanism of the circuit breaker according to claim 8, characterized in that a gear (102 a) is arranged on the handle (102), a gear set (105) matched with the gear (102 a) is further arranged on one side of the handle (102), and the remote control mechanism is connected with the gear set (105) so as to realize remote opening and closing.

10. Operating mechanism of a circuit breaker according to claim 8 or 9, characterized in that said operating button (101) and said handle (102) are provided with square holes (106) respectively for connecting a plurality of said circuit breakers in parallel to realize the linkage of multipole circuit breakers.

11. Circuit breaker, characterized in that it comprises an operating mechanism of the circuit breaker according to any of claims 1 to 10 and a contact system, the latch (202) of which is coupled with the moving contact (301) of the contact system.