CN115938879A

CN115938879A - Automatic switching-on and switching-off mechanism of circuit breaker and circuit breaker

Info

Publication number: CN115938879A
Application number: CN202211608684.4A
Authority: CN
Inventors: 罗志君; 卢科军; 周长青; 付浩
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-04-07

Abstract

The embodiment of the invention discloses an automatic switching-on/switching-off mechanism of a circuit breaker and the circuit breaker. The automatic switching-on/off mechanism comprises a first button, a second button, an electromagnetic driving piece and a moving piece; the movable piece is provided with a first movable position and a second movable position; the movable piece is matched with the first button when in the first movable position, so that the electromagnetic driving piece can drive the movable piece to contact and move the first button; the movable piece is matched with the second button when in the second movable position, so that the electromagnetic driving piece can drive the movable piece to contact and move the second button. The circuit breaker can realize switching of the switching-on and switching-off states of the circuit breaker by driving the double buttons through the single electromagnetic driving piece, and has the advantages of simple structure, low assembly precision requirement and low cost.

Description

Automatic switching-on and switching-off mechanism of circuit breaker and circuit breaker

Technical Field

The invention relates to the technical field of low-voltage electric appliances, in particular to an automatic switching-on and switching-off mechanism of a circuit breaker and the circuit breaker.

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 divided into a plug-in circuit breaker, a fixed circuit breaker and a drawer circuit breaker according to the installation mode, and the safety of the use industry of electrical equipment can be effectively improved by using the plug-in circuit breaker, so that the plug-in circuit breaker is widely applied to the industries such as communication and the like. The communication industry needs to have the capability of remotely controlling switching-on and switching-off for the circuit breaker due to the timely feedback characteristic.

The circuit breaker is usually provided with a switching-on/off assembly to realize switching-on and switching-off of the circuit breaker, and in order to realize remote control of switching-on/off, a driving mechanism capable of remotely controlling and driving the switching-on/off assembly is required to be equipped. The common switching-on and switching-off component comprises a single button and a double button; common power sources for remotely controllable drive mechanisms include motor drives and electromagnetic drives.

The motor drive needs to be matched with a gear to realize the drive of the switching-on and switching-off assembly, and has high manufacturing precision requirement, difficult assembly and high cost. Although the electromagnetic drive is low in cost, the drive action is simple, the electromagnetic drive is usually matched with a single button for use, the switching-on and switching-off are realized by driving the single button back and forth, and the switching-on and switching-off state of the circuit breaker cannot be clearly distinguished by observing the position of the single button by a user. In order to realize the matching use of the electromagnetic drive and the double buttons, the prior art uses at least two electromagnetic driving parts to respectively control the actions of the double buttons, thereby improving the production and control cost and occupying a larger space in the circuit breaker.

Disclosure of Invention

The invention mainly aims to provide an automatic switching on/off mechanism of a circuit breaker and the circuit breaker, and aims to solve the problems in the prior art.

In order to achieve the aim, the invention provides an automatic switching-on and switching-off mechanism of a circuit breaker, which comprises a base;

the electromagnetic driving piece is arranged in the base and can be driven and reset along a straight line;

the first button and the second button are movably arranged in the base and used for switching on and off of the circuit breaker;

the movable piece is movably connected with the electromagnetic driving piece, and the electromagnetic driving piece drives the movable piece to drive the first button or the second button to move in the base;

the electromagnetic driving piece can drive the movable piece to contact and move the first button; the movable piece is matched with the second button when in the second movable position, and the electromagnetic driving piece can drive the movable piece to contact and move the second button.

In some embodiments, the automatic opening and closing mechanism further comprises:

one end of the linkage piece is hinged to the electromagnetic driving piece, and the other end of the linkage piece is connected with the movable piece;

the movable piece is provided with a first elastic piece; one end of the first elastic piece is connected with the movable piece, and the other end of the first elastic piece is connected with the linkage piece, so that the movable piece can be connected with the linkage piece in a resetting and rotating mode.

In some embodiments, the first button has a first waiting position, a first working position within the base; the second button is provided with a second waiting position and a second working position in the base, and the second waiting position and the second working position correspond to the first working position and the first waiting position of the first button respectively.

In some embodiments, the first button comprises thereon:

the blocking section can interfere with the movable member when the first button is located at the first working position so as to enable the movable member to be located at the second movable position; the blocking section can avoid the movable member when the first button is in the first waiting position, so that the movable member is located in the first movable position.

In some embodiments, the electromagnetic driving element can drive the movable element to move along a first moving path to contact and push the first button to the first working position;

the electromagnetic driving piece can drive the movable piece to move along a second moving path and then contact and push the second button to the second working position;

the automatic switching-on/off mechanism further comprises:

the limiting part is arranged between the first movable path and the second movable path, so that the limiting part stops the movable part from moving to the first movable path when the movable part moves along the second movable path.

In some embodiments, the position-limiting member has a first position-limiting surface perpendicular to the moving plane of the moving member and facing the second moving path;

the movable piece is provided with a movable piece boss extending outwards from the moving plane;

the limiting piece is abutted to the moving piece boss through the first limiting surface to prevent the moving piece from moving to the first moving path.

In some embodiments, the position-limiting member further has a second position-limiting surface perpendicular to the moving plane of the movable member and facing the first moving path; the movable piece boss can abut against the second limiting surface and drive the limiting piece towards the second movable path, so that the limiting piece avoids the movable piece.

In some embodiments, the first button comprises a first button section, a first button section and a first button section which are connected in sequence;

the first button section and the second button are arranged on the same side of the moving plane of the movable piece side by side;

the blocking section is connected to one side, close to the moving part, of the first button section, the first button section extends to the moving plane of the moving part from the first button section, and the first button section is parallel to the first button section; the first button section is in contact with the movable piece so that the movable piece pushes the first button.

In some embodiments, the stopper has a first protrusion perpendicular to the moving plane of the moving member;

the first protrusion is configured to abut the first button three segments when the second button is in the second operating position.

In some embodiments, an abutting table extending to the moving plane of the movable member is disposed on the second button, and the abutting table contacts with the movable member to enable the movable member to push the second button.

In some embodiments, the abutment table surface is recessed towards a portion of the limiting member to form a third stop surface, so as to accommodate the limiting member and limit the movement range of the limiting member.

In some embodiments, the second button has a stopper mounting portion on a side thereof close to the movable member, and the stopper has a fourth elastic member so as to maintain a tendency of the stopper to rotate toward the first movable path;

the limiting part and the fourth elastic part are arranged on the limiting part mounting part.

In some embodiments, the portable electronic device further includes a cover body for covering the base, and the stopper is disposed on the cover body.

In some embodiments, the cover body is provided with a cover body mounting surface, and the limiting piece is provided with a fourth elastic piece so as to keep the limiting piece in a tendency of rotating towards the first movable path;

the limiting piece and the fourth elastic piece are arranged on the cover body mounting surface.

In some embodiments, a baffle is further included; the baffle is fixed on the cover body so as to limit the limiting piece and the fourth elastic piece between the cover body installation surface and the baffle.

The invention also provides a circuit breaker, which comprises the automatic switching-on and switching-off mechanism, the moving contact, the static contact and the operating mechanism, which are described in any one of the embodiments;

the first button and the second button of the automatic switching-on and switching-off mechanism are connected with the moving contact through the operating mechanism so as to drive the moving contact to be in contact with or separated from the fixed contact.

The automatic switching-on and switching-off mechanism of the circuit breaker drives the movable piece to drive the button to move through the electromagnetic driving piece, so that the switching-on and switching-off of the circuit breaker are realized. The circuit breaker has first button and second button, can realize the different of circuit breaker respectively after two buttons remove and close the separating brake state, and the moving part is connected on the electromagnetic drive spare and has first movable position and second movable position, and when the moving part was in first movable position, the electromagnetic drive spare can drive the moving part and remove first button, and when the moving part was in the second movable position, the electromagnetic drive spare can drive the moving part and remove the second button. The circuit breaker selectively transmits the linear driving force of the electromagnetic driving part to different buttons through the moving part, and the single electromagnetic driving part can drive the double buttons to switch the automatic opening and closing of the circuit breaker; the automatic switching-on and switching-off mechanism is simple in structure, low in assembly precision requirement and low in cost. The automatic switching on/off mechanism further comprises a blocking section connected with the first button, so that the position of the movable piece can be switched after the first button moves, and the movable piece can be driven to move the second button continuously.

The automatic opening and closing mechanism further comprises a first elastic piece connected with the moving piece, the first elastic piece is matched with the position of the first button, the moving piece can be restored to the next moving position after the electromagnetic driving piece is reset, the whole automatic opening and closing mechanism can continuously and alternately realize opening and closing, the limiting piece is arranged to prevent the moving piece from being influenced by the first elastic piece to be dislocated in the moving process, and the moving piece is conveniently guided to the second button.

According to the automatic opening and closing mechanism, the limiting piece can rotate, and the limiting piece can rotate to give way in the resetting process after the moving piece moves the first button, so that the resetting process of the moving piece is smoother.

The first button in the automatic opening and closing mechanism is provided with a first button section, a first button section and a first button section which are sequentially connected, the first button section is used for being contacted and pressed by the moving part, the first button section is closer to the moving part than the first button section, the limiting part is arranged on one side, close to the moving part, of the second button, meanwhile, the limiting part is provided with a first bulge, and when the second button is located at the second working position, the first bulge is abutted against the first button section, so that the guiding effect of the limiting part is reserved under the condition that the assembly of the automatic opening and closing mechanism is simple, and the limiting part can be prevented from rotating into the first button to influence the switching-on and switching-off states of the circuit breaker.

According to another embodiment of the invention, the limiting piece is arranged on the cover body, so that the limiting piece is arranged separately from the first button and the second button, the guiding function of the limiting piece can be kept under the condition that the automatic opening and closing mechanism is simple to assemble, and the limiting piece is prevented from influencing the motion switching of the first button and the second button.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

The methods, systems, and/or programs of the figures will be further described in accordance with the exemplary embodiments. These exemplary embodiments will be described in detail with reference to the drawings. These exemplary embodiments are non-limiting exemplary embodiments in which reference numerals represent similar mechanisms throughout the various views of the drawings.

Fig. 1 is a circuit breaker opening state diagram according to some embodiments of the present application;

fig. 2 is a closing state diagram of a circuit breaker according to some embodiments of the present disclosure;

FIG. 3 is a block diagram of an electromagnetic drive according to some embodiments of the present application;

FIG. 4 is a block diagram of a drive assembly according to some embodiments of the present application;

FIG. 5 is a block diagram illustrating an assembled electromagnetic drive and transmission assembly according to some embodiments of the present disclosure;

FIG. 6 is a diagram of a first button structure according to some embodiments of the present application;

FIG. 7 is a diagram of a second button configuration according to some embodiments of the present application;

FIG. 8 is an enlarged view of a stopper mounting portion of the second button of FIG. 7;

fig. 9 is a diagram of a position limiter according to an embodiment of the present application;

FIG. 10 is a block diagram of an intermediate spacer according to some embodiments of the present application;

FIG. 11 is a perspective view of a spindle according to some embodiments of the present application;

fig. 12 is a connection diagram of a part of components of a circuit breaker according to an embodiment of the present application in an initial opening state;

fig. 13 is a connection diagram of parts of a circuit breaker according to an embodiment of the present disclosure in a closed state;

fig. 14 is a diagram illustrating a connection relationship between parts of a circuit breaker at a certain time point in an automatic closing process according to an embodiment of the present disclosure;

fig. 15 is a diagram illustrating connection relationships between parts of a circuit breaker at another time during an automatic closing process according to an embodiment of the present disclosure;

fig. 16 is a diagram illustrating connection of parts of a circuit breaker at a certain time during an automatic opening process according to an embodiment of the present application;

fig. 17 is a diagram illustrating connection of circuit breaker components at another time during an automatic opening process according to an embodiment of the present application;

fig. 18 is a diagram of a position limiter according to an embodiment of the present application;

FIG. 19 is a block diagram of a baffle structure according to some embodiments of the present application;

FIG. 20 is a diagram of a cover construction according to some embodiments of the present application;

FIG. 21 is a block diagram of a position limiter mounted on a cover according to an embodiment of the present disclosure;

fig. 22 is a connection diagram of parts of a circuit breaker according to an embodiment of the present application in an initial opening state;

fig. 23 is a connection diagram of a portion of components of a circuit breaker according to an embodiment of the present disclosure in a closed state;

fig. 24 is a connection relationship diagram of parts of a circuit breaker at a certain time in an automatic closing process according to some embodiments of the present disclosure;

fig. 25 is a diagram illustrating a connection relationship between parts of a circuit breaker at another time during an automatic closing process according to an embodiment of the present disclosure;

fig. 26 is a diagram illustrating connection of parts of a circuit breaker at a certain time during an automatic opening process according to an embodiment of the present application;

fig. 27 is a diagram illustrating connection of circuit breaker components at another time during an automatic opening process according to an embodiment of the present application.

Icon: 1-an electromagnetic drive; 2-a transmission assembly; 3-a locking assembly; 4-switching on and switching off the brake component; 5-a base; 6-an operating mechanism; 11-a movable iron core; 111-plunger end cap; 12-a rubber gasket; 13-core spring; 14-a baffle; 15-a magnetic yoke; 151-half open circular groove; 152-a fixed groove; 16-a backbone; 17-a winding; 18-a stationary core; 21-a linkage; 211-linkage body; 212-linkage shaft; 213-linkage groove; 214-piercing; 22-a pin; 23-a first elastic member; 24-a movable member; 241-moving part groove; 242-moving part boss; 243-working surface; 41-first button; 4110-a first button head; 4111-a first button section; 4112-a first button second segment; 4113-three sections of first button; 412-a first guide; 4121-a first guide segment; 4122-a second guide segment; 414-a barrier segment; 415-a first abutment surface; 416-a first link aperture; 417-a guide boss; 418 — a first stop surface; 419-a second stop surface; 42-a second button; 4210-second button head; 4211-torsion spring arm slot; 4212-a first sector groove; 4213-second sector groove; 4214-third stop surface; 4215-a support surface; 422-a second guide; 4221-a third guide segment; 4222-a fourth guide segment; 4223-a fifth guide segment; 424-second abutment face; 425-through hole slots; 426-a via; 427-a butting stand; 428-complement station; 429-second link bore; 43-a stop; 431-a first projection; 432-a first stop surface; 433-a second projection; 434-a bonding surface; 435-pivot; 436-a second limit surface; 44-a fourth elastic member; 45-connecting rod; 451-a first link; 452-a second link; 453-third link; 46-a rotating shaft; 461-third connecting rod hole; 462-a fourth link aperture; 463-fifth link aperture; 464-a first circumferential wall; 465-a second circumferential wall; 466-rotating shaft hole; 467-bottom surface of the rotating shaft; 47-a fifth elastic member; 48-middle spacer; 481-bottom hole; 482-a support table; 483-side of support table; 484-stop table; 61-moving contact; 62-a static contact; a-a limiter; a1-a first installation shaft; a2 — a first surface; a3-a second limiting surface; a4-a first limit surface; a5-a limiting guide groove; a6-a second installation shaft; a7-a limit arm groove; a8-a second surface; b, a baffle plate; b1-a first baffle mounting hole; b2-a second baffle mounting hole; b3, a baffle limiting hole; b4, a baffle binding surface; c-a cover body; c1-cover body installation surface; c2-a cover body limiting hole; c3-cover body arm groove; c4-a first cover body mounting shaft; c5-mounting shaft of second cover body; d-a fourth elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on that shown in the drawings or that the product of the application is used as it is, this is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the 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 application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example one

As shown in fig. 1 and 2, the circuit breaker according to some embodiments of the present application is a plug-in circuit breaker, and includes an electromagnetic driving component 1, a transmission component 2, a locking component 3, an opening/closing component 4, an operating mechanism 6, a movable contact 61, a fixed contact 62, and a base 5 for accommodating the components, and the circuit breaker is installed in a chassis. The transmission component 2 moves under the driving of the electromagnetic driving component 1 and acts on the switching-on/off component 4, the operating mechanism 6 and the moving contact 61 are sequentially connected, so that the switching-on/off component 4 drives the operating mechanism 6 to enable the moving contact 61 to be in contact with or separated from the fixed contact 62 (as shown in fig. 2) or separate from the fixed contact 62 (as shown in fig. 1), and switching-on or switching-off of the circuit breaker is achieved.

For convenience of explanation of the circuit breaker shown in fig. 1 and 2, a spatial rectangular coordinate system is established, in which a left-right direction in the drawing, i.e., a length direction of the circuit breaker, is an X-axis, a right direction is a positive X-axis direction (a first direction), a top-bottom direction in the drawing, i.e., a width direction of the circuit breaker, is a Y-axis, an upward direction is a positive Y-axis direction (a second direction), and a direction perpendicular to the paper surface and outward is a positive Z-axis direction (a third direction). The coordinate system is used in the following figures and descriptions, and fig. 3, fig. 5, fig. 10, fig. 11 (b), fig. 12 to fig. 15, and fig. 22 to fig. 27 are XY plane views. It should be noted that the direction expressions including up, down, left, right, front, rear, and the like for explaining the structure and operation of the circuit breaker of the embodiment of the present application are not absolute methods, but relative directions, and these direction expressions may correctly correspond to the structural posture shown in the drawings, but when the structural posture changes, the direction expressions need to make corresponding explanatory changes to accommodate the structural posture change.

[ electromagnetic drive device ]

As shown in fig. 1 and 2, the electromagnetic driving member 1 is disposed in the base 5, and as shown in fig. 13 and 14, the electromagnetic driving member 1 can be driven and reset along a straight line. As shown in fig. 3, the electromagnetic driving member 1 includes a movable iron core 11, a rubber gasket 12, an iron core spring 13, a baffle plate 14, a yoke 15, a framework 16, a winding 17, and a stationary iron core 18. The baffle 14 is located at one end of the yoke 15 and encloses an inner space with the yoke 15, and the bobbin 16 is disposed in the inner space. The baffle 14 middle part is provided with the hole, and the yoke 15 is kept away from the one end of baffle 14 and is had the opening, and skeleton 16 is both ends and has open-ended hollow structure, and 16 surface covers of skeleton are equipped with winding 17. The movable iron core 11 extends out of an inner space enclosed by the baffle plate 14 and the magnetic yoke 15 from the framework 16 through an opening at one end of the framework 16 and the hole direction of the baffle plate 14, and the movable iron core 11 can move in the direction; the stationary core 18 is fixed to the frame 16 by extending from the frame 16 through the other opening of the frame 16 and the opening of the yoke 15 at the end away from the baffle 14. The yoke 15 has fixing grooves 152 for the insertion of both sides of the baffle 14, and the yoke 15 further has semi-open circular grooves 151 outside the fixing grooves 152. On one hand, the baffle 14 and the magnetic yoke 15 cooperate together to fix the framework 16 at a relative position inside the magnetic yoke 15, and on the other hand, the baffle 14 helps the whole magnetic circuit to be closed and increases electromagnetic force. The iron core spring 13 is sleeved on the movable iron core 11 and penetrates through the hole of the baffle plate 14, and one side of the iron core spring 13 is leaned against the opening surface of the framework 16. One end of the movable iron core 11, which is far away from the framework 16, is provided with a movable iron core end cap 111, the movable iron core 11 is further sleeved with a rubber gasket 12, the rubber gasket 12 is limited between the movable iron core end cap 111 and the iron core spring 13, and the movable iron core end cap 111 can prevent the rubber gasket 12 from being separated.

[ Transmission Assembly ]

As shown in fig. 4, the transmission assembly 2 includes a link member 21, a pin 22, a first elastic member 23, and a movable member 24. One end of the link 21 is rotatably connected to the electromagnetic driver 1: the linkage piece 21 comprises a linkage piece body 211, one end of the linkage piece body 211 is connected with a linkage shaft 212, and the linkage shaft 212 is assembled in the semi-open circular groove 151 of the electromagnetic driving piece and can enable the linkage piece 21 to freely rotate around the axis of the linkage shaft 212. The linkage body 211 is provided with a through hole 214, and the through hole 214 allows the movable iron core 11 to pass through and drives the linkage 21 to rotate along the first clock direction (clockwise rotation from C to D in fig. 5). The middle of the other end of the link body 211 is provided with a link groove 213, and both sides of the link groove 213 are provided with ears. One end of the mover 24 has a mover groove 241, and both sides of the mover groove 241 have ears. The pin 22 is used for connecting the other end of the link 21 and the movable member 24, and is approximately parallel to the linkage shaft 212 and passes through the ear of the link 21 and the ear of the movable member 24, so that the movable member 24 is rotatably connected to the other end of the link 21, as shown in fig. 5, the rotation plane of the movable member 24 is the same plane as the rotation plane of the link 21, that is, the plane shown in fig. 5. As shown in fig. 4, the end of the bending portion has a working surface 243 and a moving member boss 242 extending perpendicular to the rotation plane, and the extending direction of the moving member boss 242 (not shown in fig. 5) is perpendicular to the plane of fig. 5 and points into the paper (i.e., the direction opposite to the third direction). As shown in fig. 4, the first elastic member 23 is a torsion spring, and is sleeved on the pin 22, one rotating arm of the first elastic member 23 is attached in the linking member groove 213 of the linking member 21, and the other rotating arm is attached in the moving member groove 241 of the moving member 24, so that the moving member 24 keeps a tendency of rotating around the other end of the linking member 21 in a second clockwise direction (counterclockwise rotation from D to C in fig. 5) opposite to the first clockwise direction, that is, the moving member 24 keeps an opening tendency. Thus, the movable member 24 can be displaced with the rotation of the link 21, and can also be rotated around the other end of the link 21 in a resettable manner, i.e., the movable member 24 can also be rotated around the connection in a resettable manner.

As shown in fig. 5, the electromagnetic driving member 1 and the transmission assembly 2 are assembled into a whole, i.e., a driving mechanism, and the linkage member 21 is driven by the electromagnetic driving member 1 to rotate from the linkage stop position to the linkage actuating position. The plunger 11 passes through the through hole 214 of the link 21, one side of the plunger spring 13 abuts against the open face of the frame 16, and the other side of the plunger spring 13 abuts against the link 21 without passing over the link 21. The rubber gasket 12 is limited between the movable iron core end cap 111 and the linkage member 21, so as to prevent the movable iron core 11 from being damaged due to direct contact with the linkage member 21, and play a role in buffering and damping. As shown in fig. 1 and 2, after the electromagnetic driving assembly is fixed inside the circuit breaker, the housing (not labeled in fig. 1 and 2) of the head spacer 32 limits the movable iron core 11 to the left limit position in the drawing, i.e., the driving stop position; as shown in fig. 14, the link 21 limits the plunger 11 to the right extreme position in the figure, i.e. the driving actuation position, by limiting the plunger end cap 111.

As shown in fig. 1, 2 and 5, when the winding 17 is energized and the electromagnetic driving element 1 is started, the movable iron core 11 retracts from the driving stop position to the right (from a to B) to the driving actuating position under the action of electromagnetic force; in the retraction process of the movable iron core 11, the movable iron core end cap 111 drives the rubber gasket 12 to act on the linkage member 21, so that the linkage member 21 rotates from the linkage stop position to the direction close to the magnetic yoke 15 to the linkage actuating position under the driving of the electromagnetic driving member 1, that is, rotates from the linkage stop position to the linkage actuating position along the first clock direction (clockwise rotation from C to D in fig. 5), and under the driving of the linkage member 21, the movable member 24 presses the first button 41 or the second button 42 of the on-off brake assembly 4 in the action process, thereby implementing the on-off of the circuit breaker. When the winding 17 is powered off and the electromagnetic driving element 1 stops, the iron core spring 13 provides a resilience force for the linkage element 21, the linkage element 21 rotates to the linkage stop position from the linkage actuating position in a direction away from the magnetic yoke under the action of the iron core spring 13, namely, rotates to the linkage stop position from the linkage actuating position in a second clockwise direction (anticlockwise rotation from D to C in fig. 5) opposite to the first clockwise direction, and the movable element 24 resets under the drive of the linkage element 21; meanwhile, the link 21 acts on the plunger 11 through the rubber gasket 12, thereby bringing the plunger 11 to return to the driving stop position.

In this embodiment, one end of the linkage member 21 is rotatably connected to the electromagnetic driving member 1, but it should be noted that the linkage member 21 is used as a feasible manner that the movable member 24 is movably connected to the electromagnetic driving member 1, and the rotatable end of the linkage member 21 may also be connected to other components and/or positions in the circuit breaker, so long as it is satisfied that under the driving of the electromagnetic driving member 1, the linkage member 21 can rotate around one end between the linkage stop position and the linkage actuating position, and drives the movable member 24 to implement the switching on or switching off of the circuit breaker.

[ switching on/off brake assembly ]

Please refer to fig. 6-19 for the related structure of the switching device 4. As shown in fig. 12, the opening and closing assembly 4 includes a first button 41, a second button 42, a limiting member 43, a fourth elastic member 44, a connecting rod 45, a rotating shaft 46, a fifth elastic member 47, and an intermediate spacer 48. The link 45 includes a first link 451, a second link 452, and a third link 453. As shown in fig. 1 and 2, a first button 41 and a second button 42 are movably disposed in the base 5; the first button 41 and the second button 42 respectively have a waiting position and a working position, and the positions of the first button 41 and the second button 42 at the same time are different, that is, as shown in fig. 1, when the first button 41 is in the first waiting position, the second button 42 is necessarily in the second working position (hereinafter, the "second button" and the "second working position" are referred to simultaneously, and the "second working position" is simply referred to as the "working position"); as shown in fig. 2, when the second pushbutton 42 is in the second waiting position, the first pushbutton 41 is necessarily in the first operating position (subsequently, the "first pushbutton" and the "first operating position" are referred to simultaneously, the "first operating position" being simply referred to as the "operating position"). The first button 41 and the second button 42 are used for switching on and off the circuit breaker, and the working positions of the first button and the second button correspond to different switching on and off states of the circuit breaker respectively.

In order to conveniently explain the operation principle of the whole circuit breaker, the first button 41 in this embodiment is a closing button, the second button 42 is an opening button, and accordingly, the operating position of the first button 41 corresponds to the closing state of the circuit breaker, and the operating position of the second button 42 corresponds to the opening state of the circuit breaker, that is, after the first button 41 is pressed, the circuit breaker is in the closing state, and after the second button 42 is pressed, the circuit breaker is in the opening state. It should be noted that, the switching on and switching off of the circuit breaker is implemented by the rotating shaft 46 and the operating mechanism 6 connected to the first button 41 and the second button 42, the first button 41 and the second button 42 provide a state switching request, when the structure and connection relationship of the components related to the rotating shaft 46 and the operating mechanism 6 are adaptively changed, the first button 41 can be implemented as a switching off button, the second button 42 can be implemented as a switching on button, accordingly, the operating position of the first button 41 corresponds to the switching off state of the circuit breaker, the operating position of the second button 42 corresponds to the switching on state of the circuit breaker, that is, after the first button 41 is pressed, the circuit breaker is in the switching off state, and after the second button 42 is pressed, the circuit breaker is in the switching on state.

As shown in fig. 6, to facilitate the structure of the first button 41, the first button 41 in fig. 12 is rotated around the X-axis by a certain angle to obtain the view in fig. 6. The first button 41 comprises a first button section 4111, a first button section 4112 and a first button section 4113 which are sequentially connected, wherein the first button section 4111 and the first button section 4113 are in a bar-shaped structure in the X axial direction, and the first button section 4112 is in a bar-shaped structure in the Z axial direction.

The unconnected end of the first button segment 4111 is a first button head 4110 for manual depression by a user to switch the first button 41 from the waiting position to the operating position. The first button head 4110 passes through the first button channel 321 on the head spacer 32, and when the first button 41 moves to the leftmost (opposite to the first direction) position, the first button head 4110 does not go beyond the outside of the circuit breaker, so that here the manual pressing is not a direct hand pressing, but means that the user manually presses the first button 41 using a specific tool. The design that the head portion 4110 of the first button does not exceed the exterior of the circuit breaker can avoid misoperation in the installation and use processes.

The first guide 412 is located in the first button section 4111, the first button section 4111 has a blocking section 414 extending in the Z-axis forward direction (third direction) between the first guide 412 and the first button section 4112, the blocking section 414 is configured to: as shown in fig. 13, when the first button 41 is in the operating position and the electromagnetic driving element 1 is stopped, the blocking section 414 interferes with the reset movable element 24, the movable element 24 rotates to the second active position due to abutting against the blocking section 414, and the movable element 24 cooperates with the second button 42 in the second active position, so that the electromagnetic driving element 1 can drive the movable element 24 to move along the second active path and then contact and push the second button 42 to the operating position; as shown in fig. 12, when the first button 41 is in the waiting position and the electromagnetic driving element 1 is stopped, the blocking section 414 can move back to the second active position relative to the movable element 24, the movable element 24 rotates to the first active position due to abutting against the blocking section 414, and the movable element 24 cooperates with the first button 41 in the first active position, so that the electromagnetic driving element 1 can drive the movable element 24 to move along the first active path and then contact and push the first button 41 to the working position; the second active position is located downstream of the first active position in the first clock direction (clockwise), and the first elastic element 23 is connected to the movable element 24, so that the movable element 24 has a tendency to rotate to the first active position in the second active position, and the movable element 24 has a tendency to rotate to the first active path when moving along the second active path.

It can be understood that, under the condition that the automatic opening and closing function is not affected, when the first button 41 is in the waiting position and the electromagnetic driving element 1 is stopped, the movable element 24 may also be not abutted against the blocking section 414 and be flat with the link 21 when being reset, at this time, the movable element 24 is located in the first active position, and when the second button 42 is in the waiting position and the electromagnetic driving element 1 is stopped, the movable element 24 is abutted against the blocking section 414 and is rotated to the second active position when being reset.

The blocking section 414 is provided as part of the first button 41 in this embodiment, and it is understood that the blocking section 414 may be connected to the first button 41 by other means, such as detachably, without affecting the function of the blocking section 414 and the first button 41.

The first button section 4112 extends from the first button section 4111 to the Z-axis positive direction (third direction), and has a first abutting surface 415 and a second stopping surface 419. During the automatic closing process, the first contact surface 415 cooperates with the working surface 243 of the movable element 24 to complete the automatic closing of the circuit breaker. The second stop surface 419 contacts the limiting member 43 in the closing state and limits the limiting member 43 to be in the second limiting position.

The first button three segment 4113 extends from the first button two segment 4112 in the positive X-axis direction (the first direction), and has a first stop surface 418 thereon, and the first stop surface 418 is used for contacting and limiting the limiting member 43 to be at a first limiting position in the opening state. The unconnected end of the first button three segment 4113 further has a first link hole 416 and a guide boss 417, the first button 41 is connected to the rotating shaft 46 through the first link hole 416 and the first link 451, the base 5 has a sliding slot (not shown) matching with the guide boss 417, and the guide boss 417 slides in the sliding slot when the first button 41 moves left and right, so as to prevent the first button 41 from being dislocated.

As shown in fig. 7, the second button 42 has a bar structure in the X-axis direction. One end of the second button 42 is a second button head 4210 for the user to manually press to switch the second button 42 from the waiting position to the operating position. The second button head 4210 passes through the second button channel 322 on the head spacer 32. Like the first button 41, when the second button 42 moves to the leftmost (opposite direction to the first direction) position, the second button head 4210 does not exceed the outside of the circuit breaker, so that a user can only manually press the second button 42 with a specific tool, and misoperation during installation and use can be avoided.

The other end of the second button 42 is provided with a position supplementing platform 428, the position supplementing platform 428 is provided with a second connecting rod hole 429, the second button 42 is connected to the rotating shaft 46 through the second connecting rod hole 429 and the second connecting rod 452, and the position supplementing platform 428 raises the opening position of the second connecting rod hole 429, and ensures that the fourth connecting rod hole 462 corresponding to the rotating shaft 46 is in the same plane, so that the connecting rod connection is more reliable.

The second button 42 further has a second guiding portion 422 and a stopper mounting portion, and the second guiding portion 422 and the stopper mounting portion and the position supplementing platform 428 are located on the same plane of the second button 42.

As shown in fig. 8, the stopper mounting portion includes a torsion spring arm groove 4211, a first sector groove 4212, a second sector groove 4213, a third stop surface 4214, a support surface 4215, a second abutment surface 424, a through hole groove 425, a through hole 426, and an abutment table 427.

The supporting surface 4215 is used for bearing the limiting member 43, and the second button 42 protrudes from one side of the supporting surface 4215 toward the first button 41, so that the limiting member 43 is located between the first moving path and the second moving path, which is convenient for the limiting member 43 to stop the moving member 24 from rotating to the first moving path when the moving member 24 moves along the second moving path. The protruding portion is provided with a through hole groove 425 and a through hole 426 located at the bottom of the through hole groove 425 and coaxially penetrating the through hole groove 425, and the pivot 435 of the position-limiting member 43 is rotatably disposed in the through hole 426. The side wall of the through hole groove 425 is provided with a torsion spring arm groove 4211 and a first fan-shaped groove 4212. The fourth elastic member 44 is a torsion spring, and the arm groove 4211 of the torsion spring is used for assembling and fixing one rotating arm of the fourth elastic member 44, and the other rotating arm of the fourth elastic member 44 assembled in the first sector groove 4212 can rotate in the first sector groove 4212 under the action of external force. The circumferential side of the first sector groove 4212 communicates with a second sector groove 4213, and the second sector groove 4213 is configured to receive the second projection 433 of the stopper 43.

The second button 42 further includes a contact base 427 on a side surface to which the stopper 43 is attached, and the contact base 427 has a second contact surface 424. In the automatic opening process, the second abutting surface 424 cooperates with the working surface 243 of the movable member 24 to complete the automatic opening of the circuit breaker. A portion of the abutting table 427 facing the portion of the stopper 43 is recessed to form a third stop surface 4214 to accommodate the stopper 43 and limit the rotation range of the stopper 43.

As shown in fig. 9, the limiting member 43 has an abutting surface 434 contacting and matching with the supporting surface 4215. The position-limiting member 43 is provided with a first protrusion 431 on a surface facing away from the abutting surface 434, and the first protrusion 431 is perpendicular to the moving plane (i.e., XY plane) of the movable member 24. The first limiting surface 432 is a surface of the limiting member 43 adjacent to the abutting surface 434, and the first limiting surface 432 is perpendicular to the moving plane (i.e., XY plane) of the moving member 24 and faces the second moving path of the moving member 24. During the rotation of the limiting member 43 against the rotation force of the fourth elastic member 44, the first limiting surface 432 gradually approaches the third stop surface 4214 of the second button 42 until contacting, thereby limiting the maximum rotation angle of the limiting member 43. The second limiting surface 436 is another surface of the limiting member 43 adjacent to the abutting surface 434, and the second limiting surface 436 is perpendicular to the moving plane (i.e., XY plane) of the moving member 24 and faces the first moving path of the moving member 24. When the limiting member 43 is at the second limiting position, the second limiting surface 436 contacts the second stopping surface 419 of the first button 41. The limiting member 43 is provided with a second protrusion 433 at an edge of the abutting surface 434, and the second protrusion 433 and the pivot 435 extend from the abutting surface 434 in the same direction, so that when the pivot 435 is sleeved with the fourth elastic member 44, a rotating arm of the fourth elastic member 44 can abut against the second protrusion 433.

When the limiting member 43, the fourth elastic member 44 and the second button 42 are completely assembled, the pivot 435 of the limiting member 43 is assembled in the through hole 426 of the second button 42 in a shaft hole matching manner, so that the limiting member 43 can rotate around the shaft center, the fourth elastic member 44 is sleeved on the pivot 435 and is assembled in the through hole groove 425 at the same time, one rotating arm of the fourth elastic member 44 is assembled in the torsion spring arm groove 4211, and the other rotating arm is assembled in the first fan-shaped groove 4212 and abuts against the second protrusion 433 of the limiting member 43. The fourth elastic member 44 keeps the retaining member 43 in a plane shown in fig. 12 and 13 tending to rotate about the pivot 435 (not shown in fig. 12 and 13) in the first direction, i.e., clockwise. As shown in fig. 12, when the first button 41 is in the waiting position and the circuit breaker is in the opening state, the fourth elastic member 44 makes the first protrusion 431 abut against the first stop surface 418 of the first button three segment 4113, and the first protrusion 431 can prevent the limiting member 43 from being rotated into the first button three segment 4113 by the fourth elastic member 44 to affect the subsequent circuit breaker to be opened, and at this time, the limiting member 43 is in the first limiting position; as shown in fig. 13, when the first button is in the operating position and the circuit breaker is in the closing state, after the blocking of the first stop surface 418 is lost, the limiting member 43 continues to rotate clockwise by the rotating force of the fourth elastic member 44 until the second limiting surface 436 of the limiting member 43 contacts with the second stop surface 419 (not shown in fig. 12 and 13) of the first button 41, and at this time, the limiting member 43 is in the second limiting position.

After assembly, the positional relationship between the first button 41, the second button 42, the limiting member 43, and the moving member 24 is as shown in fig. 12, the first button section 4111 and the second button 42 are arranged side by side on the same side of a moving plane of the moving member 24 (on the opposite side of the third direction), the blocking section 414 is located on the first button section 4111 close to the moving member 24, the limiting member 43 is located on the second button 42 close to the moving member 24, the abutting table 427 extends from the second button 42 to the moving plane of the moving member 24, the first button section 4112 (hidden by the first button section 4113 and not shown in fig. 12) extends from the first button section 4111 to the moving plane of the moving member 24, and the first button section 4113 is parallel to the first button section 4111.

As shown in fig. 10, the middle spacer 48 has a bottom hole 481 opened at the bottom of the middle spacer 48, a circular arc shaped support base 482 provided on the bottom coaxially with the bottom hole 481, and a stopper base 484 also provided at the bottom. The bottom hole 481 of the middle spacer 48 is sleeved on the base protrusion (not labeled) of the base 5. The support 482 cooperates with a bottom surface 467 of the pivot 46 to support the pivot 46. The fifth elastic member 47 is a torsion spring, and a support table side 483 and a stopper table 484 are used to abut against both pivoting arms of the fifth elastic member 47 (not shown in fig. 10), respectively. The support 482 and the stop 484 are radially spaced from the bottom hole 481 to allow a space for the first circumferential wall 464 of the shaft 46 to rotate.

Fig. 11 (a) and 11 (b) show opposite surfaces of the rotating shaft 16, respectively, and it can be seen that the rotating shaft 16 has a cylindrical shape and a through rotating shaft hole 466 in the middle. The side of the rotating shaft 46 close to the middle spacer 48 is provided with a rotating shaft bottom surface 467, and a first circumferential wall 464 and a second circumferential wall 465 are arranged on two sides of a rotating shaft hole 466 on the rotating shaft bottom surface 467. The side of the shaft 46 remote from the middle spacer 48 has a third link hole 461, a fourth link hole 462 and a fifth link hole 463.

During assembly, the bottom hole 481 of the middle spacer 48, the fifth elastic element 47 and the rotating shaft hole 466 of the rotating shaft 46 are sequentially sleeved on a base protrusion (not labeled in the figures) of the base 5, one rotating arm of the fifth elastic element 47 is arranged on one side of the supporting platform 482 away from the stopping platform 484, and the other rotating arm is arranged on one side of the stopping platform 484 away from the supporting platform 482. When the rotating shaft 46 rotates clockwise in the plane shown in fig. 12, the first circumferential wall 464 of the rotating shaft 46 drives the rotating arm of the fifth elastic member 47 disposed on one side of the stopping table 484 to rotate together, so that the fifth elastic member 47 makes the rotating shaft 46 rotate in the second clockwise direction (counterclockwise direction), and further drives the first button 41 to pop out, and the second button 42 is pressed, so that the circuit breaker tends to recover the open state.

Both ends of the first link 451 are respectively disposed in the first link hole 416 and the third link hole 461 for connecting the first button 41 and the rotation shaft 46; both ends of the second link 452 are respectively disposed in the second link hole 429 and the fifth link hole 463, for connecting the second button 42 and the rotation shaft 46; both ends of the third link 453 are respectively disposed on the fourth link hole 462 and the operating mechanism 6 for connecting the rotating shaft 46 and the operating mechanism 6.

Referring to fig. 12 and fig. 13, in the present embodiment, the states of the first button 41 and the second button 42 are different from each other through the first connecting rod 451, the second connecting rod 452, and the rotating shaft 46, that is, the states of the first button 41 and the second button 42 at the same time are different, and when the first button 41 is in the pressing/waiting position, the second button 42 is correspondingly in the ejecting/working position: as shown in fig. 12 (although the circuit breaker in fig. 12 is in the initial state, it can be used to describe the actions of the components of the circuit breaker after pressing the second button 42, when the second button 42 is pressed, the second button 42 is switched from the waiting position to the operating position and pushes the second link 452 to the right (in the first direction), the second link 452 drives the rotating shaft 46 to rotate in the second clockwise direction (in the counterclockwise direction), the rotating shaft 46 drives the first link 451 to move leftward relatively, the first link 451 drives the first button 41 to move leftward, so that the first button 41 is switched from the operating position to the waiting position, meanwhile, the rotating shaft 46 drives the third link 453 to move leftward relatively, the third link 453 drives the operating mechanism 6, as shown in fig. 1, the operating mechanism 6 separates the movable contact 61 from the fixed contact 62, and the circuit breaker is in the open state; as shown in fig. 13, when the first button 41 is pressed, the first button 41 is switched from the waiting position to the operating position and pushes the first link 451 to the right (in the first direction), the first link 451 drives the rotation shaft 46 to rotate in the first clock direction (clockwise), the rotation shaft 46 drives the second link 452 to move to the left, the second link 452 drives the second button 42 to move to the left, so that the second button 42 is switched from the operating position to the waiting position, and simultaneously the rotation shaft 46 drives the third link 453 to move to the right (in the first direction), and the third link 453 pushes the operating mechanism 6, as shown in fig. 2, the operating mechanism makes the movable contact 61 contact with the fixed contact 62, so that the circuit breaker is in a closed state, and at this time, the third link crosses the dead point position, and the locking force thereof is greater than the rotation force of the fifth elastic element 47 (not shown in fig. 2), thereby overcoming the rotation force and keeping the circuit breaker in the closed state.

[ initial opening state ]

As can be seen from the foregoing description, in order to improve the electricity safety of the user during the installation process, the circuit breaker of the present embodiment can be installed in the housing only in the opening state. Therefore, the state of the breaker after being installed in the cabinet is the initial opening state as shown in fig. 12, and at this time:

the movable iron core 11 of the electromagnetic driving part 1 is at a driving stop position, and the linkage part 21 of the transmission assembly 2 is at a linkage stop position;

the movable member 24 is in the first movable position: under the action of the first elastic element 23, the side of the movable element 24 facing away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the waiting position;

the second button 42 is in the working position;

the first button 41 is in the waiting position;

the limiting member 43 is at the first limiting position: under the action of the fourth elastic element 44, the first protrusion 431 of the limiting element 43 is abutted on the first stop surface 418 of the first button 41.

The following description refers to fig. 12-17 for a manual opening and closing process and an automatic opening and closing process of the circuit breaker of this embodiment.

[ Manual closing ]

When the breaker in the opening state is manually closed, a specific tool needs to be used to press the first button 41, and after completion, the breaker is in the closing state, and the states of the components are as shown in fig. 13:

the movable iron core 11 is at a driving stop position, and the linkage piece 21 is at a linkage stop position;

the movable member 24 is in the second movable position: during the rightward (first direction) movement of the first button 41, the blocking section 414 drives the movable member 24 to rotate clockwise to the second movable position;

the first button 41 is in the working position: the first button 41 moves rightward (first direction) from the waiting position to the working position;

the second button 42 is in the waiting position: the first button 41 drives the rotating shaft 46 to rotate clockwise to the bottom through the first connecting rod 451, and further drives the second button 42 to move leftwards (opposite direction of the first direction) from the working position to the waiting position through the second connecting rod 452;

the limiting member 43 is at the second limiting position: during the rightward (first direction) movement of the first button 41, the first protrusion 431 loses the blocking of the first stop surface 418, and the limiting member 43 continues to rotate clockwise under the rotating force of the fourth elastic member 44 until the second limiting surface 436 of the limiting member 43 contacts with the second stop surface 419 (not shown in fig. 13) of the first button 41;

the first button 41 drives the rotating shaft 46 to rotate clockwise to the bottom through the first connecting rod 451, and further drives the operating mechanism 6 through the third connecting rod 453 to implement closing. At this time, the link mechanism has passed the dead point, and the dead locking force thereof is greater than the rotation force of the fifth elastic member 47, so that the circuit breaker is still in the closed state after the first button 41 is released.

[ Manual brake opening ]

Similarly, when the circuit breaker in the closing state in fig. 13 is manually opened, a specific tool is required to press the second button 42, the movement of each component is opposite to that of the manual closing, and the circuit breaker returns to the opening state shown in fig. 12 after completion. It can be understood that during the manual opening process, under the action of the rotating force of the first elastic element 23, the side of the movable element 24 facing away from the working surface 243 always abuts against the blocking section 414.

[ automatic closing ]

When the circuit breaker in the opening state is automatically switched on, the winding 17 of the electromagnetic driving part 1 is firstly electrified:

as shown in fig. 14, when the electromagnetic driving unit 1 is started after the winding 17 is energized, the movable iron core 11 moves from the driving stop position to the right (from a to B) to the driving actuating position under the action of the electromagnetic force, and drives the linkage 21 to rotate clockwise (from C to D) from the linkage stop position to the linkage actuating position; during the rotation of the link 21, the mobile element 24 moves along a first movement path: the moving element 24 gradually disengages from the blocking section 414, the moving element 24 returns to rotate together with the straight following of the linkage element 21 under the action of the revolving force of the first elastic element 23 (not shown in fig. 14), the working surface 243 of the moving element 24 contacts with the first abutting surface 415 of the first button section 4112 (not shown in fig. 14), and the moving element 24 presses the first button section 4112 so as to transmit the kinetic energy generated by the electromagnetic driving element 1 to the first button 41, that is, the moving element 24 completes the pressing of the first button 41; the first button 41 is switched from the waiting position to the operating position, and accordingly, the second button 42 becomes the waiting position; during the rightward (first direction) movement of the first button 41, the first protrusion 431 of the limiting member 43 loses the blocking of the first stop surface 418, and the limiting member 43 continues to rotate clockwise under the rotating force of the fourth elastic member 44 until the second limiting surface 436 (not shown in fig. 14) of the limiting member 43 contacts the second stop surface 419 (not shown in fig. 14) of the first button 41.

After closing, the winding 17 is cut off, and the electromagnetic driving part 1 stops:

as shown in fig. 15, the core spring 13 provides a resilient force to the link member 21, so that the link member 21 rotates counterclockwise, the movable core 11 is driven to translate leftward, and the movable core 11 and the link member 21 resume the driving stop position and the link stop position; during the counterclockwise rotation of the link 21, one surface of the movable element 24 facing away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the closing state, and since the blocking section 414 has moved rightward (in the first direction) relative to the opening state, the movable element 24 finally rotates to the second movable position; during the counterclockwise rotation of the link member 21, the moving member boss 242 (not shown in fig. 15) of the moving member 24 slides over the second limit surface 436 of the limit member 43, and at the same time, the limit member 43 rotates in the second clockwise direction (counterclockwise direction) and abuts against the third stop surface 4214 of the abutment 427, i.e., the moving member boss 242 can rotate the limit member 43 toward the second moving path, so that the limit member 43 is avoided from the moving member 24, and then the moving member 24 is separated from the limit member 43, the limit member 43 is reset under the rotating force of the fourth elastic member 44, the second limit surface 436 of the limit member 43 contacts with the second stop surface 419 (not shown in fig. 15) of the first button 41, and the limit member 43 is at the second limit position.

After the automatic closing, the link mechanism passes the dead point, and the locking force of the link mechanism is greater than the rotation force of the fifth elastic member 47, so that the circuit breaker is still in the closing state shown in fig. 13 after the electromagnetic driving member 1 is powered off.

[ automatic opening ]

When the circuit breaker in the closing state is automatically opened, the winding 17 of the electromagnetic driving part 1 is electrified:

the electromagnetic driving part 1 is started after the winding 17 is electrified, the movable iron core 11 moves from the driving stop position to the right (first direction) to the driving actuating position under the action of electromagnetic force, and drives the linkage part 21 to rotate from the linkage stop position to the linkage actuating position along the first time direction (clockwise direction); as shown in fig. 16, during the rotation of the link 21, the movable member 24 moves along the second movable path: the movable member 24 keeps contact with the blocking section 414 on one hand, and gradually approaches and contacts the limiting member 43 on the other hand, and the movable member 24 presses the second button 42 after sliding along the contact surface; specifically, the movable piece boss 242 abuts against the first limit surface 432 and slides on the first limit surface 432 under the action of the elastic force of the first elastic element 23 (not shown in fig. 16), in this way, the limit piece 43 can prevent the movable piece 24 from rotating to the first movable path, as shown in fig. 17, the movable piece 24 gradually approaches and abuts against the second abutment surface 424 of the abutment table 427 until the abutment table 427 is pressed, that is, the movable piece 24 completes the pressing of the second button 42, so that the second button 42 is switched from the waiting position to the working position, and the opening is realized.

After the opening is completed by the energization, the winding 17 of the electromagnetic driving member 1 is cut off, and the circuit breaker is restored to the opening state shown in fig. 12.

Example two

In the first embodiment, the limiting member 43 is mounted on the second button 42. The circuit breaker in the embodiment comprises a cover body C and a baffle B, wherein a limiting piece A is installed on the cover body C to achieve the function of automatic switching on and off.

Fig. 18 (a) and 18 (b) show two opposite viewing angles of the limiting element a, the limiting element a is a sheet structure, two surfaces of the sheet structure are a first surface A2 and a second surface A8, respectively, the first surface A2 has a first mounting axis A1, the second surface A8 has a second mounting axis A6, and the second mounting axis A6 is provided with a limiting guide groove A5 and a limiting arm groove A7 by side. The sheet-like structure has a second stopper face A3 and a first stopper face A4 on the side between the first surface A2 and the second surface A8.

As shown in fig. 19, the baffle B is also a sheet structure, and has a first baffle mounting hole B1, a second baffle mounting hole B2, a baffle limiting hole B3 and a baffle abutting surface B4 which is close to the first button three segments 4113 after assembly.

As shown in fig. 20, the cover C is used to cover the base 5 so as to cooperate with the base 5 to protect the internal structure of the circuit breaker. The cover body C is provided with a cover body mounting surface C1, a cover body limiting hole C2, a cover body arm groove C3, a first cover body mounting shaft C4 and a second cover body mounting shaft C5.

As shown in fig. 21, with reference to fig. 18 to 21, the first mounting shaft A1 of the limiting member a is rotatably mounted in the cover limiting hole C2, and the first surface A2 contacts with the cover mounting surface C1; a fourth elastic member D is concentrically assembled on the second installation shaft A6 of the limiting member a, one rotating arm of the fourth elastic member D is placed in the cover arm groove C3 after extending out through the limiting guide groove A5 of the limiting member a, and the other rotating arm is placed in the limiting arm groove A7 of the limiting member a. The fourth elastic member D keeps the stopper a tending to rotate counterclockwise about the second mounting axis A6 in the plane shown in fig. 21, i.e., the fourth elastic member D keeps the stopper (a) tending to rotate toward the first movable path, it being understood that the stopper a tends to rotate in the first clockwise direction (clockwise direction) about the second mounting axis A6 in the plane shown in fig. 22-27 due to the different viewing angles. The first baffle mounting hole B1 and the second baffle mounting hole B2 of the baffle B correspond to the first cover mounting shaft C4 and the second cover mounting shaft C5 of the cover C respectively and are assembled concentrically, and the second mounting shaft A6 is rotatably assembled in the baffle limiting hole B3. Therefore, the limiting member a, the baffle B and the fourth elastic member D are fixed between the cover C and the first button 41, and the baffle abutting surface B4 of the baffle B abuts against the first button third segment 4113.

[ initial opening state ]

As shown in fig. 22, when the circuit breaker is in the initial opening state:

the movable member 24 is in a first movable position: under the action of the first elastic element 23, the face of the movable element 24 facing away from the working face 243 abuts against the blocking section 414 of the first button 41 in the waiting position;

the second button 42 is in the working position;

the first button 41 is in the waiting position;

it should be noted that, unlike the first embodiment in which the extension direction of the movable piece boss 242 of the movable piece 24 is directed into the paper to contact and cooperate with the position-limiting piece 43 on the second button 42, the extension direction of the movable piece boss 242 in the present embodiment is perpendicular to the plane of fig. 22 and directed out of the paper (the third direction) to contact and cooperate with the position-limiting piece a on the cover C.

The manual opening and closing and the automatic opening and closing processes of the circuit breaker of this embodiment will be described with reference to fig. 22 to 27.

[ Manual closing ]

When the breaker in the opening state is manually closed, a specific tool needs to be used to press the first button 41, and after completion, the breaker is in the closing state, and the states of the components are as shown in fig. 23:

the movable iron core 11 is at a driving stop position, and the linkage 21 is at a linkage stop position;

the movable member 24 is in the second movable position: in the process of rightward (first direction) movement of the first button 41, the blocking section 414 drives the movable member 24 to rotate to the second movable position along the first clock direction (clockwise direction), and at this time, the movable member boss 242 does not contact with the limiting member a;

the second button 42 is in the waiting position: the first button 41 drives the rotating shaft 46 to rotate clockwise to the bottom through the first connecting rod 451, and further drives the second button 42 to move leftwards from the working position to the waiting position through the second connecting rod 452;

the first button 41 drives the rotating shaft 46 to rotate clockwise to the bottom through the first link 451, and further drives the operating mechanism 6 (not shown in fig. 23) to close the door through the third link 453 (not shown in fig. 23). At this time, the link mechanism has passed the dead point, and its deadlocking force is greater than the pivoting force of the fifth elastic member 47 (not shown in fig. 23), so that the circuit breaker is still in the closed state after the first button 41 is released.

[ Manual brake opening ]

Similarly, when the circuit breaker in the closing state in fig. 23 is manually opened, a specific tool is required to press the second button 42, and the movement of each component is opposite to that of the manual closing, and the circuit breaker returns to the opening state shown in fig. 22 after completion. It can be understood that during the manual opening process, under the action of the rotating force of the first elastic element 23, the side of the movable element 24 facing away from the working surface 243 always abuts against the blocking section 414.

[ automatic closing ]

as shown in fig. 24, the electromagnetic driving unit 1 is started after the winding 17 is energized, the movable iron core 11 moves from the driving stop position to the right (from E to F) to the driving actuating position under the action of the electromagnetic force, and drives the linkage member 21 to rotate clockwise (from G to H) from the linkage stop position to the linkage actuating position; during the rotation of the link 21, the movable element 24 gradually disengages from the blocking section 414, the movable element 24 returns to rotate together with the link 21 after being straightened by the link 21 under the action of the rotation force of the first elastic element 23, the working surface 243 of the movable element 24 abuts against the first abutting surface 415 (not shown in fig. 24) of the first button 41, the kinetic energy generated by the electromagnetic driving element 1 is transmitted to the first button 41, the first button 41 translates from the waiting position to the right (first direction) to the working position, and accordingly, the second button 42 is in the waiting position.

After the switch-on is completed, the winding 17 of the electromagnetic driving part 1 is powered off:

as shown in fig. 25, the core spring 13 provides a resilient force to the link member 21, so that the link member 21 rotates in a second clockwise direction (counterclockwise direction), the movable core 11 is driven to move horizontally to the left, and the movable core 11 and the link member 21 recover the driving stop position and the link stop position; during the counterclockwise rotation of the link 21, one surface of the movable element 24 away from the working surface 243 abuts against the blocking section 414 of the first button 41 in the closing state, and since the blocking section 414 has moved rightward (in the first direction) relative to the opening state, the movable element 24 finally rotates to the second movable position; during the counterclockwise rotation of the linking member 21, the moving member boss 242 of the moving member 24 slides over the second limiting surface A3 of the limiting member a, and at the same time, the limiting member a rotates in the second clockwise direction (counterclockwise direction), and after the two are separated from contact, the position of the limiting member 43 is restored to the opening state under the action of the rotating force of the fourth elastic member 44.

After the automatic closing, the link mechanism passes the dead point, and the locking force thereof is greater than the rotation force of the fifth elastic member 47, so that the circuit breaker is still in the closing state shown in fig. 23 after the electromagnetic driving member 1 is powered off.

[ automatic opening ]

as shown in fig. 26, when the electromagnetic driving unit 1 is started after the winding 17 is energized, the movable iron core 11 moves rightward (in the first direction) from the driving stop position to the driving actuating position under the action of the electromagnetic force, and drives the linkage member 21 to rotate clockwise from the linkage stop position to the linkage actuating position; in the rotation process of the linkage member 21, one surface of the movable member 24 departing from the working surface 243 keeps in contact with the blocking section 414, and the movable member boss 242 of the movable member 24 moves rightward (in the first direction) and rotates clockwise under the guidance of the first limiting surface A4 of the limiting member a; as shown in fig. 27, the movable element 24 gradually approaches and abuts against a second abutting surface 424 (not shown in fig. 27) of the second button 42, so as to drive the second button 42 to move rightward (in the first direction) from the waiting position to the operating position, thereby achieving opening.

After the opening is completed by the energization, the winding 17 of the electromagnetic driving member 1 is cut off, and the circuit breaker returns to the opening state shown in fig. 22.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic switching-on and switching-off mechanism of a circuit breaker comprises a base (5);

the electromagnetic driving piece (1) is arranged in the base (5) and can be driven and reset along a straight line;

a first button (41) and a second button (42) which are movably arranged in the base (5) and are used for switching on and off of the circuit breaker;

the movable piece (24) is movably connected with the electromagnetic driving piece (1), and the electromagnetic driving piece (1) drives the movable piece to drive the first button (41) or the second button (42) to move in the base (5);

the movable piece (24) comprises a first movable position and a second movable position, the movable piece is matched with the first button (41) in the first movable position, and the electromagnetic driving piece (1) can drive the movable piece (24) to contact and move the first button (41); the movable piece (24) is matched with the second button (42) when in the second movable position, and the electromagnetic driving piece (1) can drive the movable piece (24) to contact and move the second button (42).

2. The automatic switching on/off mechanism according to claim 1, characterized in that: automatic divide-shut brake mechanism still includes:

one end of the linkage piece (21) is hinged to the electromagnetic driving piece (1), and the other end of the linkage piece (21) is connected with the movable piece (4);

the movable piece (4) is provided with a first elastic piece (23); one end of the first elastic piece (23) is connected to the movable piece (24), and the other end of the first elastic piece is connected to the linkage piece (21), so that the movable piece (24) is connected with the linkage piece (21) in a resetting and rotating mode.

3. The automatic switching on/off mechanism according to claim 1, characterized in that: the first button (41) has a first waiting position, a first working position, inside the seat (5); the second button (42) has a second waiting position and a second working position in the base (5), corresponding respectively to the first working position and the first waiting position of the first button (41).

4. The automatic switching on/off mechanism according to claim 3, characterized in that: the first button (41) comprises thereon:

a blocking section (414), the blocking section (414) being capable of interfering with the movable member (24) when the first button (41) is in the first operating position to position the movable member (24) in a second active position; the blocking section (414) can be retracted away from the movable element (24) when the first push button (41) is in the first waiting position, so that the movable element (24) is in the first active position.

5. The automatic switching on/off mechanism according to claim 4, characterized in that:

the electromagnetic driving piece (1) can drive the movable piece (24) to move along a first moving path and then contact and push the first button (41) to the first working position;

the electromagnetic driving piece (1) can drive the movable piece (24) to move along a second moving path and then contact and push the second button (42) to the second working position;

the automatic switching-on/off mechanism further comprises:

the limiting piece (43) is arranged between the first movable path and the second movable path, so that the limiting piece (43) prevents the movable piece (24) from moving to the first movable path when the movable piece (24) moves along the second movable path.

6. The automatic switching on/off mechanism according to claim 5, characterized in that: the limiting piece (43) is provided with a first limiting surface (432) which is perpendicular to the moving plane of the moving piece (24) and faces the second moving path;

the movable piece (24) is provided with a movable piece boss (242) extending outwards of the moving plane;

the limiting piece (43) abuts against the movable piece boss (242) through the first limiting surface (432) to stop the movable piece (24) from moving to the first moving path.

7. The automatic opening and closing mechanism according to claim 6, wherein: the limiting piece (43) is also provided with a second limiting surface (436) which is perpendicular to the moving plane of the movable piece (24) and faces the first moving path; the movable piece boss (242) can abut against the second limiting surface (436) and drive the limiting piece (43) towards the second movable path, so that the limiting piece (43) is avoided from the movable piece (24).

8. The automatic switching on/off mechanism according to claim 5, characterized in that: the first button (41) comprises a first button section (4111), a first button section (4112) and a first button section (4113) which are connected in sequence;

the first button section (4111) and the second button (42) are arranged side by side on the same side of a movement plane of the movable part (24);

the blocking section (414) is connected to one side of the first button section (4111) close to the movable member (24), the first button section (4112) extends from the first button section (4111) to a moving plane of the movable member (24), and the first button section (4113) is parallel to the first button section (4111); the first button section (4112) is in contact with the movable member (24) to cause the movable member (24) to push the first button (41).

9. The automatic switching on/off mechanism according to claim 8, characterized in that: the limiting piece (43) is provided with a first bulge (431) which is perpendicular to the moving plane of the movable piece (24);

the first projection (431) is configured to abut against the first button three segments (4113) when the second button (42) is in the second working position.

10. The automatic switching on/off mechanism according to claim 5, characterized in that: an abutting platform (427) extending to the moving plane of the moving part (24) is arranged on the second button (42), and the abutting platform (427) is in contact with the moving part (24) so that the moving part (24) pushes the second button (42).

11. The automatic switching on/off mechanism according to claim 10, wherein: the part of the abutting table (427) facing the limiting piece (43) is recessed to form a third stopping surface (4214) so as to accommodate the limiting piece (43) and limit the moving range of the limiting piece (43).

12. The automatic switching on/off mechanism according to any one of claims 5 to 11, wherein: one side of the second button (42) close to the movable piece (24) is provided with a mounting part of the limiting piece (43), and the limiting piece (43) is provided with a fourth elastic piece (44) so that the limiting piece (43) keeps the tendency of rotating towards the first movable path;

the limiting part (43) and the fourth elastic part (44) are arranged on the limiting part (43) installation part.

13. An automatic opening and closing mechanism according to any one of claims 5 to 8 and 10 to 11, wherein: the base is characterized by further comprising a cover body (C), the cover body (C) is used for covering the base (5), and the limiting part (A) is arranged on the cover body (C).

14. The automatic switching on/off mechanism according to claim 13, wherein: the cover body (C) is provided with a cover body mounting surface (C1), and the limiting piece (A) is provided with a fourth elastic piece (D) so that the limiting piece (A) keeps a trend of rotating towards the first movable path;

the limiting piece (A) and the fourth elastic piece (D) are arranged on the cover body mounting surface (C1).

15. The automatic switching on/off mechanism according to claim 14, wherein: also comprises a baffle plate (B); the baffle (B) is fixed on the cover body (C) so as to limit the limiting piece (A) and the fourth elastic piece (D) between the cover body installation surface (C1) and the baffle (B).

16. A circuit breaker comprising an automatic opening and closing mechanism, a movable contact (61), a fixed contact (62), an operating mechanism according to any one of claims 1 to 15;

the first button (41) and the second button (42) of the automatic switching-on and switching-off mechanism are connected with the moving contact (61) through the operating mechanism so as to drive the moving contact (61) to be in contact with or separated from the fixed contact (62).