Circuit breaker

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a circuit breaker, the length direction, the width direction and the height direction are respectively a direction d1, a direction d2 and a direction d3, and the size of a shell in the direction d2 is larger than that of the shell in the direction d3; the contact system comprises a moving contact and a static contact which are matched for use, and the rotating shaft direction of the moving contact is parallel to the direction d3; the first bus clamp and the second bus clamp are oppositely arranged in a spaced mode in the direction d3, each of the first bus clamp and the second bus clamp comprises a pair of clamping plates which are oppositely arranged in the direction d3 and used for clamping an external conductor, and each clamping plate extends to the two ends of the shell in the direction d2; the circuit breaker is higher in current carrying capacity.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. Background Art

[0002] A circuit breaker is a switching device used to disconnect and connect a load circuit, as well as to cut off a faulty circuit to prevent the accident from expanding, thereby ensuring the safe operation of the load circuit. Among them, a 1U circuit breaker often includes a first circuit (used to control the on and off of the positive pole of the load circuit) and a second circuit (a direct-through circuit for electrically connecting the negative pole of the load circuit).

[0003] In existing circuit breakers, the incoming terminals are often plug-in terminals. Due to the arrangement of the incoming terminals, their size is limited, which affects the current carrying capacity of the circuit breaker. Utility Model Content

[0004] The purpose of the present invention is to overcome at least one defect of the prior art and provide a circuit breaker with a stronger current carrying capacity.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A circuit breaker having a length direction d1, a width direction d2, and a height direction d3, respectively; the circuit breaker includes a housing and a first circuit and a second circuit both disposed within the housing, the first circuit including a first coupling plate, a contact system, and a first busbar clamp connected in series, the second circuit including a second coupling plate and a second busbar clamp connected in series, the first coupling plate and the second coupling plate both extending in direction d1;

[0007] The size of the shell in direction d2 is larger than the size of the shell in direction d3; the contact system includes a movable contact and a static contact used in conjunction with each other, and the rotating axis direction of the movable contact is parallel to direction d3; the first busbar clamp and the second busbar clamp are arranged relatively spaced along direction d3, and the first busbar clamp and the second busbar clamp both include a pair of clamping plates arranged relatively along direction d3 and used to clamp the external conductor, and each clamp extends to both ends of the shell along direction d2.

[0008] Furthermore, the first connecting plate and the second connecting plate are respectively arranged at two ends inside the housing in the direction d3.

[0009] Furthermore, the circuit breaker also includes wiring terminals arranged in the casing. In direction d1, a wiring terminal is provided in one end of the casing and a first busbar clamp and a second busbar clamp are provided in the other end; one end of the first connecting plate is electrically connected to the contact system and the other end is electrically connected to m wiring terminals, one end of the second connecting plate is electrically connected to the second busbar clamp and the other end is electrically connected to m wiring terminals, where m is an integer and ≥2.

[0010] Furthermore, the housing also includes a wiring seat, which is a separate structure from the housing, and the wiring terminals are arranged in the wiring seat.

[0011] Furthermore, the first circuit also includes a manganese-copper shunt connected in series between the contact system and the first busbar clamp, and the first connecting plate and the manganese-copper shunt are arranged side by side and spaced apart along direction d1; the first connecting plate and the manganese-copper shunt are located at one end inside the shell in direction d3, and the second connecting plate is located at the other end inside the shell in direction d3.

[0012] Furthermore, the first circuit further includes a handle, an operating mechanism, and an arc extinguishing chamber sequentially arranged along the direction d1, and a thermal tripping mechanism and a magnetic tripping mechanism sequentially arranged along the direction d1;

[0013] The operating mechanism, thermal trip mechanism, magnetic trip mechanism, and arc extinguishing chamber are located between the first connecting plate and the second connecting plate in direction d3, and the thermal trip mechanism and magnetic trip mechanism are located on one side of the operating mechanism in direction d2;

[0014] The moving contact and the static contact are arranged side by side along direction d2, the arc extinguishing chamber cooperates with the contact system, the handle is slidably arranged in the housing along direction d1, the handle and the terminal are arranged at the same end of the housing in direction d1 and are arranged side by side along direction d3, and the handle is transmission-connected to the moving contact through an operating mechanism.

[0015] Furthermore, the circuit breaker further comprises an electric reclosing mechanism in transmission cooperation with the operating mechanism, the electric reclosing mechanism being located between the handle and the operating mechanism in direction d1 and between the first connecting plate and the second connecting plate in direction d3.

[0016] Furthermore, the circuit breaker also includes a circuit board device connected to the motor control of the electric reclosing mechanism, the circuit board device includes a first circuit board assembly and a second circuit board assembly connected to each other; the first circuit board of the first circuit board assembly is located between the second connecting plate and the operating mechanism in the direction d3; in the direction d2, the second circuit board of the second circuit board assembly is located on one side of the operating mechanism and the electric reclosing mechanism, and the thermal trip mechanism and the magnetic trip mechanism are arranged on the other side of the operating mechanism and the electric reclosing mechanism.

[0017] Furthermore, the circuit breaker also includes an inner shell arranged in the outer shell, and the operating mechanism, the electric reclosing mechanism, the first circuit board assembly, the thermal trip mechanism, the magnetic trip mechanism, the contact system and the arc extinguishing chamber are all arranged in the inner shell, the second circuit board is arranged between the inner shell and the outer shell and is arranged side by side with the inner shell along the direction d2, and the first connecting plate and the second connecting plate are respectively located on both sides of the inner shell in the direction d3.

[0018] Furthermore, the outer shell includes a first outer half shell and a second outer half shell relatively assembled together along a direction d2; the inner shell includes a first inner half shell and a second inner half shell relatively assembled together along a direction d3.

[0019] Furthermore, the operating mechanism includes a front connecting rod, a second rotating shaft, a rear connecting rod, a first rotating shaft, a third connecting rod, a locking component and a main reset component. The second rotating shaft and the first rotating shaft are respectively rotatably arranged and the rotation axes are parallel to the direction d3. The third connecting rod and the locking component are snap-fitted and rotatably arranged on the first rotating shaft and the rotation axes are parallel to the direction d3. The handle is connected to the second rotating shaft through the front connecting rod to drive the second rotating shaft to rotate. The second rotating shaft is connected to the third connecting rod through the rear connecting rod to drive the third connecting rod, the locking component and the first rotating shaft to rotate synchronously. The main reset component acts on the first rotating shaft to make it have a rotation tendency to drive the moving contact to the disconnected position.

[0020] Furthermore, the circuit breaker further comprises an indicating mechanism for indicating the opening and closing status of the circuit breaker, and the indicating mechanism is arranged in the handle and slides synchronously therewith.

[0021] In the circuit breaker of the present invention, the rotating axis direction of the movable contact is parallel to the direction d3, allowing the movable contact to have a larger rotation angle, which is beneficial to improving the breaking capacity of the circuit breaker. The arrangement of the first busbar clamp and the second busbar clamp is beneficial to increasing the structural dimensions of the two, and can be plugged into and matched with a larger busbar, thereby increasing the maximum carrying current of the two, thereby increasing the rated current value of the circuit breaker of the present invention.

[0022] In addition, the first connecting plate is connected to more than two wiring terminals, and the second connecting plate is connected to more than two wiring terminals, which plays a shunting role, can reduce the cross-sectional area of ​​the wire connected to each wiring terminal, and facilitate the connection of the wire to the circuit breaker of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the switch device of the utility model;

[0024] Figure 2 This is an exploded view of the switch device of the present invention;

[0025] Figure 3 This is a cross-sectional view of the switchgear of the utility model in the open state;

[0026] Figure 4 This is a schematic structural diagram of the switch device of the present invention with the second outer half shell removed;

[0027] Figure 5 This is a schematic structural diagram of the switch device of the present invention with the housing removed;

[0028] Figure 6 It is a structural diagram of the loop structure of the first circuit and the loop structure of the second circuit of the utility model;

[0029] Figure 7 It is a structural diagram of the shell of the utility model;

[0030] Figure 8 This is an exploded view of the housing of the utility model;

[0031] Figure 9 This is a schematic structural diagram of the wiring socket of the utility model, wherein the first wiring hole and the second wiring hole adopt the first arrangement mode;

[0032] Figure 10 This is a schematic diagram of an arrangement of the first and second terminal types of the present invention, corresponding to the first arrangement of the first and second wiring holes;

[0033] Figure 11 It is a schematic diagram of the structure of the utility model terminal block under two viewing angles;

[0034] Figure 12 This is a structural diagram of the wiring socket of the utility model, wherein the first wiring hole and the second wiring hole adopt the second arrangement mode;

[0035] Figure 13 This is a schematic diagram of another arrangement of the first and second terminal types of the present invention, corresponding to the second arrangement of the first and second wiring holes.

[0036] Description of Reference Numerals

[0037] Housing 1a, first outer half shell 1-1a, second outer half shell 1-2a, guide rib 1-23a, first socket 1-3a, second socket 1-4a, signal socket 1-5a, heat dissipation hole 1-9a, mounting port 1-10a;

[0038] Inner shell 2a, first inner half shell 2-1a, second inner half shell 2-2a;

[0039] Handle 1b;

[0040] Indicating agencyi;

[0041] Anti-force closing mechanism 4b;

[0042] Anti-strong pulling mechanism 5b;

[0043] Wiring device 6b, terminal block 6-1b, terminal block body 6-11b, wiring side wall 6-111b, terminal cavity 6-12b, terminal cavity insertion hole 6-120b, wiring hole 6-13b, first wiring hole 6-131b, second wiring hole 6-132b, operation hole 6-14b, first operation hole 6-141b, second operation hole 6-142b, terminal block retaining wall 6-15b, wiring terminal 6-2b, type I terminal 6-21b, wiring frame 6-211b, wide portion 6-2111b, narrow portion 6-2112b, wire pressing side wall 6-2113b, wide portion side wall 6-2114b, narrow portion side wall 6-2115b, screw mounting wall 6-2116b, wiring screw 6-212b, wire pressing piece 6-213b, type II terminal 6-22b;

[0044] Operating mechanism 7b, front connecting rod 7-1b, second rotating shaft 7-2b, rear connecting rod 7-3b, first rotating shaft structure 7r, first rotating shaft 7-4b, third connecting rod 7-5b, locking component 7-6b, locking spring 7-7b, main reset component 7-8b;

[0045] Electric reclosing mechanism 8b, motor 8-1b, gear transmission structure 8s;

[0046] Thermal trip mechanism 9b, bimetallic strip 9-1b, thermal element 9-4b;

[0047] Magnetic tripping mechanism 10b;

[0048] Contact system 11b, moving contact 11-1b, static contact 11-2b, static contact plate 11-22b;

[0049] Arc extinguishing mechanism 12b, arc extinguishing chamber 12-1b;

[0050] Manganese copper shunt 13b;

[0051] First connecting plate 14b, first connecting main plate 14-1b, first connecting end plate 14-2b;

[0052] First busbar clamp 15b;

[0053] First connecting plate 17b;

[0054] A second connecting plate 18b;

[0055] Second connecting plate 1c, second connecting main plate 1-1c, second connecting end plate 1-2c;

[0056] Second busbar clamp 2c;

[0057] Circuit board device p;

[0058] A first circuit board assembly 1p, a first circuit board 1-1p, a first connector 1-2p, and a first micro switch 1-3p;

[0059] Second circuit board assembly 2p, second circuit board 2-1p, second connector 2-2p, second micro switch 2-3p, first sampling terminal 2-4p, connector 2-5p. DETAILED DESCRIPTION

[0060] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the switch device of the present invention. The switch device of the present invention is not limited to the description of the following embodiments.

[0061] The utility model discloses a switch device, specifically a circuit breaker. Further, the circuit breaker is a plug-in circuit breaker. Further, the circuit breaker is a 1U circuit breaker.

[0062] like Figure 1-11 The figure shows an embodiment of the switch device of the present invention. The switch device of this embodiment is a single-pole switch device, which includes a housing and a first circuit and a second circuit disposed within the housing. The first circuit is a negative circuit, and the first circuit preferably includes a breakpoint (e.g., a breakpoint that can be opened and closed, composed of a moving contact and a static contact), that is, the conduction and disconnection of the first circuit can be controlled by controlling the closing and opening of the breakpoint. The second circuit is a positive circuit, and the second circuit is preferably a straight-through circuit. "Straight-through circuit" means that there is no breakpoint (e.g., a breakpoint that can be opened and closed, composed of a moving contact and a static contact) in the second circuit, and it always remains in a conducting state. Furthermore, in actual use of the switch device of this embodiment, the two ends of the first circuit are used to connect the negative conductor on the power supply side and the negative conductor on the load side, and the two ends of the second circuit are used to connect the positive conductor on the power supply side and the positive conductor on the load side, respectively.

[0063] Furthermore, the length direction, width direction and height direction of the switch device of the present invention are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other; the length direction, width direction and height direction of the shell are respectively the same as direction d1, direction d2 and direction d3.

[0064] Specifically, in the switch device of the present invention, the size of the housing 1a in the direction d2 is larger than the size of the housing 1a in the direction d3, and the size of the housing 1a in the direction d1 is larger than the size of the housing 1a in the direction d2.

[0065] Further, such as Figure 1-2As shown in Figures 7-8, the housing includes an outer shell 1a, and the first and second circuits are both disposed within the outer shell 1a. The length, width, and height of the outer shell 1a are respectively aligned with directions d1, d2, and d3. Specifically, the outer shell 1a includes a first outer half shell 1-1a and a second outer half shell 1-2a that are relatively assembled along direction d2.

[0066] Further, such as Figure 1-8 As shown, the first circuit includes an operating system, a contact system 11b and an arc extinguishing system, the operating system includes a handle 1b and an operating mechanism 7b, the handle 1b is slidably arranged in the housing (specifically, the handle 1b is slidably arranged in the housing 1a) and switches between the handle closing position and the handle opening position by reciprocating sliding, the contact system 11b includes a moving contact 11-1b and a static contact 11-2b used in conjunction with each other, the handle 1b is transmission-connected to the operating mechanism 7b, and the operating mechanism 7b is transmission-connected to the moving contact 11-1b; when the handle 1b slides to the handle closing position, the handle 1b is switched to the handle opening position by the operating mechanism 7b. b drives the moving contact 11-1b to the closed position and closes with the static contact 11-2b, i.e., the switch device completes the closing operation, and the operating mechanism 7b and the switch device switch from the open state to the closed state. When the handle 1b slides to the handle-open position, the handle 1b drives the moving contact 11-1b to the disconnected position through the operating mechanism 7b and disconnects from the static contact 11-2b, i.e., the switch device completes the opening operation, and the operating mechanism 7b and the switch device switch from the closed state to the open state. The arc extinguishing system cooperates with the contact system 11b to extinguish the arc generated by the closing and opening of the contact system 11b. The handle 1b is pressed by an external force to slide into the housing 1a and switch to the handle-closed position. The handle 1b is pulled by an external force to slide out of the housing 1a and switch to the handle-open position.

[0067] Further, such as Figure 3 、 6 As shown, the moving contact 11 - 1b and the static contact 11 - 2b are arranged opposite to each other along the direction d2; one end of the moving contact 11 - 1b is transmission-connected to the operating mechanism 7b and the other end is matched with the static contact 11 - 2b.

[0068] Further, such as Figure 2-35, the operating mechanism 7b includes a second rotating shaft 7-2b, a rear connecting rod 7-3b, a first rotating shaft structure 7r and a main reset member 7-8b. The second rotating shaft 7-2b is rotatably arranged, and the handle 1b is driven by the second rotating shaft 7-2b to drive it to rotate (that is, the handle 1b switches between the handle closing position and the handle opening position by reciprocating sliding to drive the second rotating shaft 7-2b to reciprocate, and the second rotating shaft 7-2b switches between the second rotating shaft closing position and the second rotating shaft opening position). The shaft 7-2b drives the first rotating shaft structure 7r to rotate through the rear connecting rod 7-3b and the first rotating shaft structure 7r (that is, the second rotating shaft 7-2b switches between the second rotating shaft closing position and the second rotating shaft opening position by reciprocating rotation, and the first rotating shaft structure 7r switches between the first rotating shaft structure closing position and the first rotating shaft structure opening position). The first rotating shaft structure 7r includes a third connecting rod 7-5 that is respectively rotatably arranged and snap-fitted. b and the locking component 7-6b, the first rotating shaft structure 7r is connected to the moving contact 11-1b by transmission, and the main reset component 7-8b acts on the first rotating shaft structure 7r to make it have a rotational tendency to drive the moving contact 11-1b to move toward the disconnected position, that is, the main reset component 7-8b acts on the first rotating shaft structure 7r to make it have a tendency to rotate toward the opening position of the first rotating shaft structure. For example, when the handle 1b drives the operating mechanism 7b to perform the opening operation or after the operating mechanism 7b is tripped, the main reset component 7-8b moves to the first rotating shaft structure. The first rotating shaft structure 7r applies a force to rotate the second rotating shaft 7-2b toward the opening position of the first rotating shaft structure, thereby driving the moving contact 11-1b to the disconnected position. When the operating mechanism 7b is normally opening and closing (that is, when the second rotating shaft 7-2b is driven by an external force - the external force comes from the handle 1b or the electric reclosing mechanism 8b mentioned later - and drives the moving contact 11-1b and the static contact 11-2b to close and open via the first rotating shaft structure 7r), the third connecting rod 7-5b and the locking component 7-6b maintain a snap-fit ​​fit. Furthermore, the operating mechanism 7b also includes a front connecting rod 7-1b, through which the handle 1b is connected to the second rotating shaft 7-2b for transmission, thereby driving the second rotating shaft 7-2b to rotate.Furthermore, the first rotating shaft structure 7r also includes a first rotating shaft 7-4b and a lock spring 7-7b that are rotatably arranged. The first rotating shaft structure 7r is rotatably arranged through the first rotating shaft 7-4b, and the third connecting rod 7-5b and the lock component 7-6b are rotatably arranged on the rotating shaft 7-4b respectively. The second rotating shaft 7-2b is transmission-connected to the third connecting rod 7-5b through the rear connecting rod 7-3b, and the first rotating shaft 7-4b is transmission-connected to the moving contact 11-1b. The main reset member 7-8b acts on the first rotating shaft 7-4b to enable the first rotating shaft structure 7r to drive the moving contact. The head 11-1b has a rotational tendency to move toward the disconnected position (that is, when the handle 1b drives the operating mechanism 7b to perform the opening operation and after the operating mechanism 7b is tripped, the main reset member 7-8b applies a force to the first rotating shaft 7-4b, so that the first rotating shaft structure 7r drives the moving contact 11-1b to move toward the disconnected position and disconnects from the static contact 11-2b), and the locking spring 7-7b acts on the locking component 7-6b to make it have a tendency to rotate relative to the first rotating shaft 7-4b and ensure that the locking component 7-6b and the third connecting rod 7-5b are reliably snap-fitted. Furthermore, the rotation axis directions of the second rotation axis 7-2b, the first rotation axis structure 7r, the first rotation axis 7-4b, the third connecting rod 7-5b and the locking component 7-6b are all parallel to the direction d3; the rotation axis direction of the moving contact 11-1b is parallel to the direction d3, and the rotation plane of the moving contact 11-1b is parallel to the direction d1 and the direction d2 and perpendicular to the direction d3, so that the moving contact 11-1b can rotate within a larger angle range, thereby improving the breaking capacity of the switching device of the utility model.

[0069] Furthermore, the operating mechanism 7b also includes a second rotating shaft reset member, which acts on the second rotating shaft 7-2b to make it have a rotation tendency to drive the operating mechanism 7b to open the gate, that is, the second rotating shaft reset member acts on the second rotating shaft 7-2b to make it have a tendency to rotate toward the second rotating shaft opening position.

[0070] Furthermore, when the operating system is in the open state, the second rotating shaft 7-2b is in the second rotating shaft open position and triggers the first microswitch 1-3p of the circuit board device p to switch to the first operating state. When the operating system switches to the closed state, the second rotating shaft 7-2p rotates toward the second rotating shaft closed position, releasing the first microswitch 1-3p, and the first microswitch 1-3p switches to the second operating state. The switching of the first microswitch 1-3p between the first and second operating states and the output of the signal facilitate remote monitoring of the position of the second rotating shaft 7-2p, thereby realizing remote monitoring of the open and closed states of the switch device of the utility model.

[0071] Further, such as Figure 2-3As shown in Figures 5 and 6, the operating system further includes an electric reclosing mechanism 8b, which cooperates with the handle 1b or the second rotating shaft 7-2b to drive the operating mechanism 7b to open or close the switch. In this embodiment, the electric reclosing mechanism 8b preferably cooperates with the second rotating shaft 7-2b to facilitate remote closing and opening of the switch device of the present invention.

[0072] Further, such as Figure 2 、 4 -5, the switch device also includes a first wiring component and a second wiring component arranged in the shell, and of the first wiring component and the second wiring component, one is an outgoing wiring component and the other is an incoming wiring component; the first wiring component includes a first negative wiring component and a first positive wiring component, and the second wiring component includes a second negative wiring component and a second positive wiring component, and the first negative wiring component and the second negative wiring component are respectively connected in series at both ends of the first circuit (i.e., the negative circuit), that is, the first circuit is connected to the corresponding external circuit through the first negative wiring component and the second negative wiring component, and the first positive wiring component and the second positive wiring component are respectively connected in series at both ends of the second circuit (i.e., the positive circuit / through circuit), and the second circuit is connected to the corresponding external circuit through the first positive wiring component and the second positive wiring component.

[0073] Specifically, the first and second wiring components are respectively arranged at two ends of the housing, the first wiring component is an outgoing wiring component, and the second wiring component is an incoming wiring component. The second wiring component is a plug-in wiring component, such as a busbar clamp.

[0074] Further, such as Figure 2-3 As shown in Figures 4-6, the first circuit further includes a first connecting plate 14b, a first negative electrode wiring member, first connecting plate 14b, contact system 11b, and a second negative electrode wiring member connected in series. Specifically, the first negative electrode wiring member, first connecting plate 14b, movable contact 11-1b, stationary contact 11-2b, and second negative electrode wiring member are connected in series in series. Furthermore, first connecting plate 14b is a metal conductive plate.

[0075] Further, such as Figure 2 、 4As shown in FIG. 6 , the first circuit further includes a manganese-copper shunt 13b, which is preferably connected in series between the contact system 11b and the second negative terminal connection component. Specifically, the manganese-copper shunt 13b is connected in series between the static contact 11-2b and the second negative terminal connection component. Furthermore, the first circuit further includes a second connecting plate 18b, through which the manganese-copper shunt 13b is electrically connected to the static contact plate 11-22b of the static contact 11-2b. Furthermore, the manganese-copper shunt 13b and the second connecting plate 18b are preferably integrally formed, connected by a bend. The second connecting plate 18b and the static contact plate 11-22b are stacked and fixed together along direction d2 and electrically connected. The plane of the manganese-copper shunt 13b is perpendicular to direction d3.

[0076] Further, such as Figure 2 、 6 As shown, the second circuit further includes a second connecting plate 1c. The first positive electrode wiring component, the second connecting plate 1c, and the second positive electrode wiring component are sequentially connected in series. Furthermore, the second connecting plate 1c is a metal conductive plate, and the second positive electrode wiring component is a second busbar clamp 2c. The second connecting plate 1c and the second busbar clamp 2c are welded or connected via fasteners (e.g., rivets or screws).

[0077] Further, such as Figure 2-3 As shown in Figures 5 and 6, the operating system further includes a thermal trip mechanism 9b and / or a magnetic trip mechanism 10b. The thermal trip mechanism 9b and / or the magnetic trip mechanism 10b are used to drive the locking component 7-6b to rotate and release the locking engagement with the third connecting rod 7-5b when an overload fault and / or a short circuit fault occurs in the circuit where the switching device is located (which is also the circuit where the contact system 11b, the moving contact 11-1b, and the static contact 11-2b are located), thereby tripping the operating mechanism 7b.

[0078] Furthermore, the thermal trip mechanism 9b and the magnetic trip mechanism 10b are arranged side by side along direction d1 and on the same side of the operating mechanism 7b, creating a more rational and compact layout and helping to reduce the space occupied by the thermal trip mechanism 9b and the magnetic trip mechanism 10b. Specifically, the thermal trip mechanism 9b and the magnetic trip mechanism 10b are arranged on the same side of the operating mechanism 7b along direction d2.

[0079] Specifically, such as Figure 2 、 6As shown, the thermal trip mechanism 9b includes a bimetallic strip 9-1b, and the thermal trip mechanism 9b is connected in series between the first connecting plate 14b and the contact system 11b. Furthermore, the thermal trip mechanism 9b also includes a thermal element 9-4b, one end of the bimetallic strip 9-1b is fixedly mounted on the thermal element 9-4b, and the thermal element 9-4b cooperates with the housing limit to achieve fixed installation of the thermal trip mechanism 9b, and is also used to electrically connect with the first connecting plate 14b. Furthermore, the first circuit also includes a first connecting plate 17b, and the first connecting plate 14b is electrically connected to the thermal element 9-4b through the first connecting plate 17b. Furthermore, the first connecting plate 14b and the first connecting plate 17b are preferably an integrated structure, and the two are bent and connected; the first connecting plate 17b and the thermal element 9-4b are stacked and fixed together along the direction d2 and are electrically connected.

[0080] Further, such as Figure 1-2 , 4-5, 9-13, the switch device of the present invention also includes a wiring device 6b, the wiring device 6b includes a wiring seat 6-1b and a wiring terminal 6-2b arranged in the wiring seat 6-1b; the wiring seat 6-1b includes a wiring side wall 6-111b, the wiring side wall 6-111b is provided with two groups of wiring holes 6-13b, the wiring holes 6-13b are matched with the wiring terminals 6-2b one to one, the two groups of wiring holes 6-13b are respectively a group one wiring hole and a group two wiring hole, the group one wiring hole includes at least two first wiring holes The wire holes 6-131b, the wiring terminals 6-2b matched with each first wiring hole 6-131b are Class I terminals 6-21b, and each Class I terminal 6-21b is used to be connected in series at one end of the first circuit. The second wiring hole group includes at least two second wiring holes 6-132b, and the number of the first wiring holes 6-131b and the second wiring holes 6-132b is the same. The wiring terminals 6-2b corresponding to each second wiring hole 6-132b are Class II terminals 6-22b, and each Class II terminal 6-22b is used to be connected in series at one end of the second circuit. Furthermore, the at least two Class I terminals 6-21b are used to be electrically connected to the first connecting plate 14b, that is, m connecting terminals 6-2b are electrically connected to the first connecting plate 14b, and m is a positive integer ≥2; the at least two Class II terminals 6-22b are used to be electrically connected to the second connecting plate 1c, that is, m connecting terminals 6-2b are electrically connected to the second connecting plate 1c, and m is a positive integer ≥2.

[0081] Specifically, the wiring terminal 6-2b is a first wiring device; in this embodiment, the first wiring hole group includes two first wiring holes 6-131b, and correspondingly, two first-class terminals 6-21b are provided in the wiring seat 6-1b, which respectively correspond to the two first wiring holes 6-131b; the second wiring hole group includes two second wiring holes 6-132b, and correspondingly, two second-class terminals 6-22b are provided in the wiring seat 6-1b, which respectively correspond to the two second wiring holes 6-132b; the first-class terminals 6-21b are electrically connected to the first connecting plate 14b, and the second-class terminals 6-22b are electrically connected to the second connecting plate 1c.

[0082] The wiring device 6b brings the following benefits: the wiring device 6b is provided with a plurality of first-class terminals 6-21b connected in series with one end of the first circuit and a plurality of second-class terminals 6-22b connected in series with one end of the second circuit. The first circuit can be connected to a plurality of external conductors through the plurality of first-class terminals 6-21b, and the second circuit can be connected to a plurality of external conductors through the plurality of second-class terminals 6-22b, which plays a shunting role and can reduce the cross-sectional area of ​​the wire connected to each wiring terminal, thereby facilitating the connection between the wire and the switch device of this embodiment. Specifically, the current specification of the switch device of this embodiment is 250A. In order to meet the current carrying requirements, if the first circuit and the second circuit are respectively connected to the external conductor through a single wire, If the switching device of this embodiment is connected to the entire circuit, the interface area of ​​the single wire will be larger. However, due to the size limitation of the switching device of this embodiment, if only one Class I terminal 6-21b and one Class II terminal 6-22b are provided, the maximum size of the wiring hole 6-13b allowed to cooperate with each wiring terminal is provided on the housing of the switching device, and it cannot accommodate a single wire - that is, a single wire cannot be inserted into the wiring hole 6-13b. However, the switching device of this embodiment is provided with multiple Class I terminals 6-21b and multiple Class II terminals 6-22b, so the cross-sectional area of ​​the single wire connected to each wiring terminal 6-2b can be reduced by at least half, so that the single wire can pass through the corresponding wiring hole 6-13b and be connected to the corresponding wiring terminal 6-2b.

[0083] Furthermore, the wiring device 6b is also provided in the housing 1a and is located at one end of the housing 1a. The wiring seat 6-1b and the housing 1a are of a separate structure. The wiring seat 6-1b combines the wiring terminals 6-2b into a whole, which is conducive to the overall installation and removal, and improves the assembly efficiency of the switch device. Figure 10 As shown, the housing 1a is provided with a mounting opening 1-10a at one end in the direction d1, and the wiring device 6b is arranged in the mounting opening 1-10a.

[0084] As another embodiment of the wiring socket 6 - 1 b and the housing 1 a , the wiring socket 6 - 1 b and the housing 1 a are an integrated structure. In other words, a part of the structure of the housing 1 a serves as the wiring socket 6 - 1 b .

[0085] Furthermore, the terminal block 6-2b includes a terminal frame 6-211b and a wire pressing piece 6-213b, wherein the wire pressing piece 6-213b cooperates with the terminal frame 6-211b to compress an external conductor inserted into the terminal frame 6-211b, and an external force directly or indirectly operates the wire pressing piece 6-213b to release the external conductor. Furthermore, the terminal block 6-2b also includes a terminal screw 6-212b, which is arranged on the terminal frame 6-211b and cooperates with the wire pressing piece 6-213b to drive the wire pressing piece 6-213b to move to compress and release the external conductor.

[0086] Specifically, the wire pressing member 6-213b is a wire pressing block that is rotatably mounted on the wiring frame 6-211b. The wire pressing block is driven by the wiring screw 6-212b to swing within the wiring frame 6-211b to compress and release the external conductor inserted into the wiring frame 6-211b. Furthermore, the wiring frame 6-211b includes a wide portion 6-2111b and a narrow portion 6-2112b that are sequentially arranged and connected to each other along direction d3. The wiring screw 6-212b is threadedly connected to the narrow portion 6-2112b. The wide portion 6-2111b is used to allow the external conductor to be inserted therein. The wire pressing block is driven by the wiring screw 6-212b to swing within the wiring frame 6-211b to compress and release the external conductor inserted into the wide portion 6-2111b. In the direction d2, the size of the wide portion 6-2111b is larger than the size of the narrow portion 6-2112b. The wide and narrow portion design of the wiring frame helps reduce the space occupied by the terminal. Furthermore, the wiring frame 6-211b includes a wire pressing side wall 6-2113b, a wide portion side wall 6-2114b, a narrow portion side wall 6-2115b and a screw mounting wall 6-2116b, and the wire pressing side wall 6-2113b is used to cooperate with the wire pressing block to press and release the external conductor inserted into the wide portion 6-2111b (specifically, the first connecting end plate 14-2b of the first connecting plate 14b or the second connecting end plate 1-2c of the second connecting plate 1c is inserted into the wiring frame 6-211b of the corresponding terminal 6-2b and is overlapped with the wire pressing side wall 6-2113b of the corresponding wiring frame 6-211b, and the external conductor is inserted between the wire pressing block and the first connecting end plate 14-2b or the second connecting end plate 1-2c, and the wire pressing block rotates to press the external conductor against the first connecting end plate 14-2b or the second connecting end plate Plate 1-2c), the two wide side walls 6-2114b are relatively arranged along the direction d2 and are respectively connected to the two ends of the wire pressing side wall 6-2113b by bending, the two narrow side walls 6-2115b are relatively arranged along the direction d2, the two narrow side walls 6-2115b are respectively connected to the two wide side walls 6-2114b and the two narrow side walls 6-2115b are offset between the two wide side walls 6-2114b, the two screw mounting walls 6-2116b are stacked together along the direction d1 and are respectively connected to the two narrow side walls 6-2115b by bending, the wiring screw 6-212b is arranged along the direction d1 and is threadedly connected to the two screw mounting walls 6-2116b, and the wire pressing block includes a wire pressing block shaft, and the two ends of the wire pressing block shaft are respectively rotatably arranged in the wire pressing block shaft grooves of the two narrow side walls 6-2115b.

[0087] As another embodiment of the terminal block 6-2b, the wire pressing member 6-213b is a wire pressing tile, which is rotatably connected to one end of the terminal screw 6-212b and is arranged in a linear motion within the terminal frame 6-211b. The wire pressing tile cooperates with the terminal frame 6-211b (specifically, the wire pressing side wall 6-2113b) to tighten and release the external conductor inserted into the terminal frame 6-211b.

[0088] As another embodiment of the terminal block 6-2b, the wire pressing member 6-213b is a spring piece with one end being rotatably arranged on the wiring frame 6-211b. When wiring, the wiring screw 6-212b presses the spring piece so that its other end presses the external conductor inserted into the wiring frame 6-211b. When removing the wires, the wiring screw 6-212b avoids the spring piece, and the spring piece automatically resets and releases the external conductor.

[0089] As another embodiment of the terminal block 6-2b, the wire pressing member 6-213b is provided on a wiring spring, one end of which is fixed and the other end is used to press the external conductor inserted into the wiring frame 6-211b; an external force (such as a screwdriver) presses the wiring spring through the operating hole 6-14b to release the external conductor.

[0090] Furthermore, the wiring side wall 6-111b of the wiring seat 6-1b is also provided with two groups of operating holes 6-14b, the operating holes 6-14b are matched one-to-one with the wiring screws 6-212b, the aperture of the operating hole 6-14b is smaller than the aperture of the wiring hole 6-13b, and the two groups of operating holes 6-14b are respectively group one operating holes and group two operating holes. The group one operating holes includes at least two first operating holes 6-141b that are matched one-to-one with the first wiring holes 6-131b, and the group two operating holes includes at least two second operating holes 6-142b that are matched one-to-one with the second wiring holes 6-132.

[0091] Specifically, the wiring side wall 6-111b is provided with two groups of first operating holes 6-141b, which respectively cooperate with the two groups of first wiring holes 6-131b; the wiring side wall 6-111b is provided with two groups of second operating holes 6-142b, which respectively cooperate with the two groups of second wiring holes 6-132b. It should be noted that the operating holes 6-14b and the corresponding wiring holes 6-13b can be two holes provided independently of each other, or two holes connected to each other.

[0092] like Figure 9The figure shows a first arrangement of the first wiring holes 6-131b and the second wiring holes 6-132: the wiring holes in group 1 are offset to one side relative to the wiring holes in group 2 in direction d3, the first wiring holes 6-131b of group 1 are arranged side by side along direction d2, and the second wiring holes 6-132b of group 2 are arranged side by side along direction d2; the wiring holes 6-13b and the corresponding operation holes 6-14b are arranged side by side along direction d3; the wiring holes 6-13b and the corresponding wiring terminals 6-2b are arranged opposite each other along direction d1, and the operation holes 6-14b and the corresponding wiring terminals 6-2b are arranged opposite each other along direction d1. Furthermore, the first wiring holes 6-131b and the second wiring holes 6-132b are arranged alternately in sequence along direction d2, with a second operation hole 6-142b provided between two adjacent first wiring holes 6-131b, and a first operation hole 6-141b provided between two adjacent second wiring holes 6-132b.

[0093] Specifically, such as Figure 9 In the direction shown, on the wiring side wall 6-111b of the wiring seat 6-1b, from left to right, the first wiring hole 6-131b, the second wiring hole 6-132b, the first wiring hole 6-131b, and the second wiring hole 6-132b are arranged in sequence.

[0094] Further, such as Figure 10 As shown, when the first wiring hole 6-131b and the second wiring hole 6-132b of the wiring device 6b adopt the above-mentioned arrangement method, the first-class terminals 6-21b and the second-class terminals 6-22b of the wiring device 6b are alternately arranged in sequence along the direction d2, and among the adjacent first-class terminals 6-21b and second-class terminals 6-22b, the wide part 6-2111b of the first-class terminal 6-21b and the narrow part 6-2112b of the second-class terminal 6-22b are arranged side by side along the direction d2, and the narrow part 6-2112b of the first-class terminal 6-21b and the wide part 6-2111b of the second-class terminal 6-22b are arranged side by side along the direction d2.

[0095] like Figure 12 As shown, this is a second arrangement of the first wiring holes 6-131b and the second wiring holes 6-132b. The difference between this arrangement and the above arrangement is that: the group one wiring holes and the group two wiring holes are arranged in sequence in the direction d2, the group one wiring holes are located to one side of the group two wiring holes in the direction d2, the group two wiring holes and the group two operating holes are arranged side by side along the direction d2, and the group two wiring holes and the group one operating holes are arranged side by side along the direction d2.

[0096] Further, such as Figure 13As shown, when the first wiring hole 6-131b and the second wiring hole 6-132b of the wiring device 6b adopt the above-mentioned arrangement method, the first-class terminal 6-21b of the wiring device 6b is located on the side of the second-class terminal 6-22b in the direction d2, the wide part 6-2111b of each first-class terminal 6-21b is side by side along the direction d2 and the narrow part 6-2112b is side by side along the direction d2, the wide part 6-2111b of each second-class terminal 6-22b is side by side along the direction d2 and the narrow part 6-2112b is side by side along the direction d2, the wide part 6-2111b of each first-class terminal 6-21b and the narrow part 6-2112b of each second-class terminal 6-22b are side by side along the direction d2, and the narrow part 6-2112b of each first-class terminal 6-21b and the wide part 6-2111b of each second-class terminal 6-22b are side by side along the direction d2.

[0097] The first wiring hole 6-131b and the second wiring hole 6-132b of the wiring device 6b adopt the above-mentioned two arrangement methods, which is conducive to reducing the space required for each wiring hole 6-13b, and at the same time reducing the space required for each wiring terminal 6-2b, which is conducive to reducing the overall specifications and dimensions of the wiring device 6b.

[0098] It should be noted that the arrangement of the first wiring hole 6-131b and the second wiring hole 6-132b is not limited to the above two. The two can also adopt the following arrangement: Method 1 - Refer to Figure 9 As shown, this arrangement is similar to Figure 9 The arrangement shown has at least the following differences: from right to left, the second wiring hole 6-132b, the first wiring hole 6-131b, the second wiring hole 6-132b and the first wiring hole 6-131b. Figure 12 As shown, this arrangement is similar to Figure 12 The arrangement shown has at least the following differences: from right to left, the second wiring hole 6-132b, the second wiring hole 6-132b, the first wiring hole 6-131b, and the first wiring hole 6-131b. Method 3: In the direction d2, the two second wiring holes 6-132b are located at both ends, and the two first wiring holes 6-131b are located between the two second wiring holes 6-132b; in the direction d3, the two second wiring holes 6-132b are offset to one side relative to the two first wiring holes 6-131b. Method 4: The difference from Method 3 is that in the direction d2, the two first wiring holes 6-131b are located at both ends, and the two second wiring holes 6-132b are located between the two first wiring holes 6-131b. The first wiring holes 6-131b and the second wiring holes 6-132b can also be arranged in many other ways, which are not listed here one by one.

[0099] Furthermore, the terminal block 6-1b also includes a terminal cavity 6-12b arranged therein and used to accommodate the terminal 6-2b. The terminal cavity 6-12b is matched with the terminal 6-2b one-to-one, that is, a terminal 6-2b is arranged in each terminal cavity 6-12b, and the terminal cavity 6-12b includes a terminal cavity opening for allowing the terminal 6-2b to be transferred into the terminal cavity 6-12b. The terminal cavity opening is arranged at one end of the corresponding terminal cavity 6-12b in the direction d3. The terminal cavity 6-12b that cooperates with the first type terminal 6-21b is the first cavity, and the terminal cavity 6-12b that cooperates with the second type terminal 6-22b is the second cavity. The terminal cavity opening of the first cavity and the terminal cavity opening of the second cavity are respectively arranged on the two side walls of the terminal block 6-1b that are opposite to each other along the direction d3.

[0100] The layout of the terminal cavity opening of the first cavity and the terminal cavity opening of the second cavity is conducive to improving the insulation gap and creepage distance between the first cavity and the second cavity.

[0101] As another embodiment of the terminal cavity opening, the terminal cavity opening is provided on the bottom wall of the corresponding terminal cavity 6 - 12b, and the bottom wall of the terminal cavity refers to the side wall of the terminal cavity 6 - 12b opposite to the wiring side wall 6 - 111b along the direction d1.

[0102] Furthermore, the terminal cavity 6-12b also includes a terminal cavity insertion hole 6-120b provided on its bottom wall for the corresponding connecting plate (the first connecting plate 14b or the second connecting plate 1c) to be inserted therein and cooperate with the wiring frame 6-211b of the corresponding wiring terminal 6-2b; the first connecting end plate 14-2b of the first connecting plate 14b of the first circuit is inserted therein through the terminal cavity insertion hole 6-120b of the first cavity and cooperates with the wiring frame 6-211b of the first type of terminal 6-21b, and the second connecting end plate 1-2c of the second connecting plate 1c of the second circuit is inserted therein through the terminal cavity insertion hole 6-120b of the second cavity and cooperates with the wiring frame 6-211b of the second type of terminal 6-22b.

[0103] Specifically, the first connecting plate 14b includes a first connecting main plate 14-1b and a first connecting end plate 14-2b, the first connecting end plate 14-2b is arranged on one end of the first connecting main plate 14-1b and is matched with a type of terminal 6-21b one to one, each first connecting end plate 14-2b is arranged side by side along the direction d2, and each first connecting end plate 14-2b is inserted into the wiring frame 6-211b of the corresponding terminal 6-2b through the corresponding terminal cavity insertion hole 6-120b and overlaps with the wire pressing side wall 6-2113b of the corresponding wiring frame 6-211b. placed together; the second connecting plate 1-1c includes a second connecting main plate 1-1c and a second connecting end plate 1-2c, the second connecting end plate 1-2c is arranged on one end of the second connecting main plate 1-1c and is matched one-to-one with the second type terminal 6-22b, and each second connecting end plate 1-2c is arranged side by side along the direction d2, and each second connecting end plate 1-2c is inserted into the wiring frame 6-211b of the corresponding wiring terminal 6-2b through the corresponding terminal cavity insertion hole 6-120b and is overlapped with the wire pressing side wall 6-2113b of the corresponding wiring frame 6-211b.

[0104] Further, such as Figure 1-5 As shown, the dimension of the housing 1a in direction d2 is greater than the dimension of the housing 1a in direction d3, that is, the width dimension of the housing 1a is greater than the height dimension of the housing 1a; the second negative terminal connection component is a first busbar clamp 15b, and the second positive terminal connection component is a second busbar clamp 2c. The first busbar clamp 15b and the second busbar clamp 2c are arranged with relative spacing along direction d3. The first busbar clamp 15b and the second busbar clamp 2c each include a pair of clamping plates arranged opposite to each other along direction d3 and used to clamp the external conductor, and each clamping plate extends along direction d2 to both ends of the housing 1a.

[0105] Specifically, the first busbar clamp 15b and the second busbar clamp 2c both have a generally Ω-shaped structure in the projection perpendicular to the direction d2; the housing 1a is provided with a first socket 1-3a that cooperates with the first busbar clamp 15b and a second socket 1-4a that cooperates with the second busbar clamp 2c, and the first socket 1-3a and the second socket 1-4a are arranged side by side and spaced apart along the direction d3.

[0106] The arrangement of the first busbar clamp 15b and the second busbar clamp 2c facilitates increasing their structural dimensions, enabling them to be plugged into larger busbars, increasing their maximum current carrying capacity and thereby increasing the rated current of the switchgear of the present invention. This arrangement of the first busbar clamp 15b and the second busbar clamp 2c can be applied to switchgear with a rated current of 250A or above.

[0107] Furthermore, the first connecting plate 14b and the second connecting plate 1c are respectively arranged at the two ends inside the shell 1a along the direction d3, so that more internal space of the shell 1a can be utilized to increase the structural dimensions of the first connecting plate 14b and the second connecting plate 1c, thereby increasing the current carrying capacity of the two.

[0108] Further, such as Figure 2-3 As shown in Figures 5 and 6, the operating system further includes a circuit board device p, which is connected to the control of the electric reclosing mechanism 8b. Specifically, the circuit board device p is connected to the motor control of the electric reclosing mechanism 8b. After receiving the remote closing signal, the circuit board device p controls the motor to operate, thereby driving the electric reclosing mechanism 8b to close the circuit. Furthermore, the circuit board device p includes a connector 2-5p (also known as a gold finger). The circuit board device p outputs and receives signals and / or data through the connector 2-5p. For example, the circuit board device p can output the opening and closing status signal of the switch device through the connector 2-5p, output the operating status data of the switch device (voltage, current, etc.) through the connector 2-5p, and receive reclosing control signals through the connector 2-5p. Furthermore, the housing 1a is provided with a signal socket 1-5a that cooperates with the connector 2-5p. The signal socket 1-5a is located between the first socket 1-3a and the second socket 1-4a in the direction d3.

[0109] Furthermore, the circuit board device p also includes a first microswitch 1-3p. The first microswitch 1-3p is in transmission cooperation with the gear transmission structure 8s or the operating mechanism 7b of the electric reclosing mechanism 8b. The gear transmission structure 8s is respectively in transmission cooperation with the motor 8-1b and the operating mechanism 7b (specifically, the second rotating shaft 7-2b). After the switch device of the present invention is opened, it is driven by the gear transmission structure 8s or the operating mechanism 7b to change its operating state. Specifically, the first microswitch 1-3p is in transmission cooperation with the second rotating shaft 7-2b of the operating mechanism 7b.

[0110] Specifically, the circuit board device p includes a first circuit board assembly 1p and a second circuit board assembly 2p that are communicatively connected. The first circuit board assembly 1p includes a first circuit board 1-1p and a first microswitch 1-3p disposed on the first circuit board 1-1p. The second circuit board assembly 2p includes a second circuit board 2-1p and a connector 2-5p disposed on the second circuit board 2-1p. The second circuit board assembly 2p outputs and receives data and / or signals through the connector 2-5p. Furthermore, the first circuit board assembly 1p includes a first connector 1-2p disposed on the first circuit board 1-1p. The second circuit board assembly 2p includes a second connector 2-2p disposed on the second circuit board 2-1p. The first connector 1-2p and the second connector 2-2p are plugged together to achieve a communicative connection between the first circuit board assembly 1p and the second circuit board assembly 2p. Furthermore, the first connector 1-2p and the second connector 2-2p are plugged together along direction d2. Furthermore, the circuit board device p also includes a first sampling terminal 2-4p and a second sampling terminal. The first sampling terminal 2-4p is used to plug and electrically connect to the first connecting plate 14b of the first circuit, and the second sampling terminal is used to plug and electrically connect to the second connecting plate 1c of the second circuit to obtain operating power. Furthermore, the first sampling terminal 2-4p and the second sampling terminal are both disposed on the second circuit board 2-1p of the second circuit board assembly 2p.

[0111] Further, such as Figure 2-3 As shown, the switch device of the present invention further includes an indicating mechanism i for indicating the opening and closing states of the switch device. Furthermore, the indicating mechanism i is arranged in the handle 1b and slides synchronously therewith.

[0112] Furthermore, the circuit board device p also includes a second microswitch 2-3p. When the switch device is opened (i.e., when the operating system is opened - when the operating system performs the opening operation), the inner end of the indicator mechanism triggers the second microswitch 2-3p to switch the working state. The second microswitch 2-3p can convert the opening and closing state of the switch device of the present invention into an electrical signal output, thereby realizing remote monitoring of the opening and closing state of the switch device of the present invention. Furthermore, the second microswitch 2-3p is arranged on the second circuit board 2-1p of the second circuit board assembly 2p. The second microswitch 2-3p includes a second operating rod or a second operating protrusion. The inner end of the indicator mechanism presses against the second operating rod or the second operating protrusion to switch the working state of the second microswitch 2-3p. It should be noted that the first microswitch 1-3p and the second microswitch 2-3p can be set at one of the two. In this embodiment, the first microswitch 1-3p and the second microswitch 2-3p are set at the same time, which improves the reliability and accuracy of indicating the current opening and closing state of the switch device of the present invention.

[0113] Further, such as Figure 2 、 4 -5, the switch device of the present invention further includes an anti-forced closing mechanism 4b, which is used to prevent the switch device of the present invention from closing when the switch device of the present invention is not installed in the installation position or is installed in the installation position but not installed in place.

[0114] Further, such as Figure 1-2 As shown in 4-5, the switch device of the present invention further includes an anti-force pulling mechanism 5b. After the switch device of the present invention is installed in the installation position, the anti-force pulling mechanism 5b is used to prevent the switch device of the present invention from being pulled out of the installation position in the closed state.

[0115] Further, such as Figure 2-3 As shown in FIG5 , the arc extinguishing system includes an arc extinguishing system shell and an arc extinguishing mechanism 12b disposed in the arc extinguishing system shell, and the arc extinguishing mechanism 12b includes an arc extinguishing chamber 12-1b. Figure 2 、 8 As shown, the shell of the switch device of the present invention also includes an inner shell 2a arranged in the outer shell 1a, and at least an arc extinguishing mechanism 12b of the arc extinguishing system is provided in the inner shell 2a, that is, the inner shell 2a serves as the arc extinguishing system shell of the arc extinguishing system. The inner shell 2a can be used only to accommodate the arc extinguishing mechanism 12b, and can also be used to accommodate more components including the arc extinguishing mechanism 12b (such as an operating mechanism 7b, a contact system 11b, a thermal trip mechanism 9b, a magnetic trip mechanism 10b, an electric reclosing mechanism 8b and a first circuit board assembly 1p of the circuit board device p). Furthermore, the operating mechanism 7b, electric reclosing mechanism 8b, thermal trip mechanism 9b, magnetic trip mechanism 10b, contact system 11b, arc extinguishing mechanism 12b of the arc extinguishing system, and first circuit board assembly 1p are all arranged in the inner shell 2a. The operating mechanism 7b, electric reclosing mechanism 8b, thermal trip mechanism 9b, magnetic trip mechanism 10b and the arc extinguishing mechanism of the arc extinguishing system are first installed in the inner shell 2a, and then installed as a whole in the outer shell 1a, which is conducive to improving installation efficiency; the handle 1b, the first wiring device, the second wiring device, the manganese copper shunt 13b, the first connecting plate 14b, the second connecting plate 1c, the second circuit board assembly 2p of the circuit board device p, the anti-force closing mechanism 4b, and the anti-force pulling mechanism 5b are all arranged outside the inner shell 2a and located inside the outer shell 1a.

[0116] Further, such as Figure 3-5As shown, in the direction d1, the first wiring device and the handle 1b are arranged in one end of the housing 1a and the second wiring device is arranged in the other end of the housing 1a, which also means that the wiring device 6b and the handle 1b are arranged in one end of the housing 1a and the second wiring device is arranged in the other end of the housing 1a, which also means that the first wiring device (wiring device 6b) is located outside one end of the inner housing 2a in the direction d1, and the second wiring device is arranged outside the other end of the inner housing 2a; the first wiring device and the handle 1b are arranged side by side along the direction d3, which also means that the wiring device 6b and the handle 1b are arranged side by side along the direction d3; the handle 1b, the operating mechanism 7b, the contact system 11b, and the arc extinguishing chamber 12-1b of the arc extinguishing mechanism 12b are arranged in sequence along the direction d1, and the operating mechanism 7b, the contact system 11b and the arc extinguishing system are located between the handle 1b and the second wiring device in the direction d1. Of course, the operating mechanism The operating mechanism 7b, the contact system 11b, and the arc extinguishing chamber 12-1b are also located between the first wiring device (wiring device 6b) and the second wiring device in the direction d1; the moving contact 11-1b and the static contact 11-2b of the contact system 11b are arranged opposite to each other along the direction d2, and the size of the shell 1a in the direction d2 is larger than the size of the shell 1a in the direction d3, so that the moving contact 11b can obtain a larger action space, which can increase the opening distance between the moving contact 11-1b and the static contact 11-2b, and improve the breaking performance of the switching device of the present invention; in the direction d3, the first connecting plate 14b and the manganese copper shunt 13b of the first circuit are located on the same side of the operating mechanism 7b and the contact system 11b and between the inner shell 2a and the outer shell 1a, and the second connecting plate 1c of the second circuit is located on the other side of the operating mechanism 7b and the contact system 11b and between the inner shell 2a and the outer shell 1a. Furthermore, the first connecting plate 17b and the second connecting plate 18b of the first circuit are located on the same side of the operating mechanism 7b and the contact system 11b in direction d2 and are at least partially located inside the inner housing 2a. The arrangement of the components of the switch device of this embodiment is reasonable and compact.

[0117] Furthermore, the electric reclosing mechanism 8b is arranged between the handle 1b and the operating mechanism 7b in the direction d1.

[0118] Furthermore, the first circuit board 1-1p of the first circuit board assembly 1p is arranged perpendicular to the direction d3, and the first circuit board 1-1p is arranged between the handle 1b and the first rotating shaft structure 7r of the operating mechanism 7b in the direction d1, and the first circuit board assembly 1p is arranged inside the inner shell 2a; the second circuit board 2-1p of the second circuit board assembly 2p is arranged perpendicular to the direction d2, and the second circuit board 2-1p is located on one side of the operating mechanism 7b in the direction d2 and is located between the inner shell 2a and the outer shell 1a.

[0119] Furthermore, the thermal trip mechanism 9b and the magnetic trip mechanism 10b are located on the same side of the operating mechanism 7b in direction d2, the thermal trip mechanism 9b and the magnetic trip mechanism 10b are arranged side by side along direction d1, and the thermal trip mechanism 9b, the magnetic trip mechanism 10b, the first connecting plate 17b and the second connecting plate 18b are located on the same side of the operating mechanism 7b in direction d2.

[0120] Furthermore, the second negative electrode connection component (ie, the first busbar clamp 15b) and the second positive electrode connection component (ie, the second busbar clamp 2c) are arranged side by side along the direction d3.

[0121] Furthermore, the anti-strong pulling mechanism 5b and the handle 1b are arranged side by side along the direction d3.

[0122] Furthermore, the anti-forced closing mechanism 4b and the wiring device 6b are arranged side by side along the direction d3, and the anti-forced closing mechanism 4b and the handle 1b are arranged side by side along the direction d1.

[0123] Furthermore, the anti-force pulling mechanism 5b and the anti-force closing mechanism 4b are arranged side by side along the direction d2.

[0124] Furthermore, the housing also includes a second gap and a third gap respectively arranged between the outer shell 1a and the inner shell 2a. The second gap and the third gap are respectively located on both sides of the inner shell 2a in the direction d3. The second gap is used to accommodate the first connecting plate 14b and the manganese-copper shunt 13b connected in series on both sides of the contact system 11b, and the third gap is used to accommodate the second connecting plate 1c of the second circuit.

[0125] Furthermore, the shell also includes a first gap arranged between the outer shell 1a and the inner shell 2a, and the first gap is arranged side by side with the inner shell 2a in the direction d2. The first gap is used to accommodate the second circuit board assembly 2p and is arranged side by side with the inner shell 2a along the direction d2.

[0126] Furthermore, the housing also includes a terminal block 6-1b of a wiring device 6b disposed within the first space r1, the terminal block 6-1b being arranged side by side with the inner shell 2a along direction d1; the housing also includes a handle mounting cavity disposed between the terminal block 6-1b and the outer shell 1a, the handle mounting cavity being configured for the handle 1b to be slidably disposed therein and being arranged side by side with the terminal block 6-1b along direction d3. Furthermore, the terminal block 6-1b includes a wiring hole 6-13b disposed thereon and a terminal block retaining wall 6-15b, the terminal block retaining wall 6-15b being located between the wiring hole 6-13b and the handle mounting cavity along direction d3, the terminal block retaining wall 6-15b being configured for an operator to pull out the switch device from its mounting position (e.g., a cabinet, a distribution cabinet, etc.), and the terminal block retaining wall 6-15b can also separate an external conductor inserted into the wiring hole 6-13b from the handle 1b, thereby preventing the movement of the handle 1b from being obstructed by the external conductor. Furthermore, the terminal block 6-1b includes a terminal block body 6-11b and a terminal block retaining wall 6-15b, and the wiring hole 6-13b, the terminal cavity 6-12b, the operating hole 6-14b, and the wiring side wall 6-111b are all arranged on the terminal block body 6-11b, and one end of the terminal block retaining wall 6-15b is connected to the wiring side wall 6-111b.

[0127] Further, such as Figure 1-2 As shown in Figures 7-8, the housing 1a further includes heat dissipation holes 1-9a, and heat dissipation holes 1-9a are provided on a pair of side walls of the housing 1a perpendicular to the direction d2.

[0128] Further, such as Figure 7-8 As shown, the housing 1a also includes a guide rib 1-23a arranged on its outer surface for cooperating with the guide groove on the shell of the installation position of the circuit breaker. The guide rib 1-23a extends along the direction d1. The guide rib 1-23a ensures that the switching device of the present invention is installed in the installation position in the correct posture.

[0129] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0130] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A circuit breaker, wherein the length direction, width direction and height direction are directions d1, d2 and d3 respectively; the circuit breaker comprises a housing (1a) and a first circuit and a second circuit both disposed within the housing (1a); the first circuit comprises a first connecting plate (14b), a contact system (11b) and a first busbar clamp (15b) connected in series in sequence; the second circuit comprises a second connecting plate (1c) and a second busbar clamp (2c) connected in series in sequence; the first connecting plate (14b) and the second connecting plate (1c) both extend along direction d1; Its characteristics are: The size of the housing (1a) in direction d2 is greater than the size of the housing (1a) in direction d3; the contact system (11b) includes a movable contact (11-1b) and a stationary contact (11-2b) for use together, and the rotation axis direction of the movable contact (11-1b) is parallel to the direction d3; the first busbar clamp (15b) and the second busbar clamp (2c) are arranged relatively spaced apart along the direction d3, and the first busbar clamp (15b) and the second busbar clamp (2c) both include a pair of clamping plates arranged relatively along the direction d3 and used for clamping an external conductor, and each clamping plate extends along the direction d2 to both ends of the housing (1a).

2. The circuit breaker according to claim 1, wherein: The first connecting plate (14b) and the second connecting plate (1c) are respectively arranged at two ends inside the housing (1a) in the direction d3.

3. The circuit breaker according to claim 1, wherein: The circuit breaker further comprises a connection terminal (6-2b) arranged in the housing (1a); in direction d1, the connection terminal (6-2b) is arranged in one end of the housing (1a) and the first busbar clamp (15b) and the second busbar clamp (2c) are arranged in the other end; one end of the first connecting plate (14b) is electrically connected to the contact system (11b) and the other end is electrically connected to m connection terminals (6-2b); one end of the second connecting plate (1c) is electrically connected to the second busbar clamp (2c) and the other end is electrically connected to m connection terminals (6-2b), where m is an integer and ≥2.

4. The circuit breaker according to claim 3, wherein: The housing (1a) further comprises a wiring seat (6-1b), the wiring seat (6-1b) and the housing (1a) are of a split structure, and the wiring terminal (6-2b) is arranged in the wiring seat (6-1b).

5. The circuit breaker according to claim 1, wherein: The first circuit also includes a manganese-copper shunt (13b) connected in series between the contact system (11b) and the first busbar clamp (15b), and the first connecting plate (14b) and the manganese-copper shunt (13b) are arranged side by side and spaced apart along the direction d1; the first connecting plate (14b) and the manganese-copper shunt (13b) are located at one end inside the housing (1a) in the direction d3, and the second connecting plate (1c) is located at the other end inside the housing (1a) in the direction d3.

6. The circuit breaker according to claim 3, wherein: The first circuit further comprises a handle (1b), an operating mechanism (7b), and an arc extinguishing chamber (12-1b) arranged in sequence along direction d1, and a thermal tripping mechanism (9b) and a magnetic tripping mechanism (10b) arranged in sequence along direction d1; The operating mechanism (7b), thermal tripping mechanism (9b), magnetic tripping mechanism (10b), and arc extinguishing chamber (12-1b) are located between the first connecting plate (14b) and the second connecting plate (1c) in direction d3, and the thermal tripping mechanism (9b) and magnetic tripping mechanism (10b) are located on one side of the operating mechanism (7b) in direction d2; The moving contact (11-1b) and the static contact (11-2b) are arranged side by side along direction d2, the arc extinguishing chamber (12-1b) cooperates with the contact system (11b), the handle (1b) is slidably arranged in the housing (1a) along direction d1, the handle (1b) and the connecting terminal (6-2b) are arranged at the same end of the housing (1a) in direction d1 and are arranged side by side along direction d3, and the handle (1b) is transmission-connected to the moving contact (11-1b) via an operating mechanism (7b).

7. The circuit breaker according to claim 6, characterized in that: The circuit breaker further comprises an electric reclosing mechanism (8b) in transmission cooperation with the operating mechanism (7b); the electric reclosing mechanism (8b) is located between the handle (1b) and the operating mechanism (7b) in direction d1 and between the first connecting plate (14b) and the second connecting plate (1c) in direction d3.

8. The circuit breaker according to claim 7, wherein: The circuit breaker further comprises a circuit board device (p) connected to the control of a motor (8-1b) of an electric reclosing mechanism (8b), the circuit board device (p) comprising a first circuit board assembly (1p) and a second circuit board assembly (2p) connected to each other; the first circuit board (1-1p) of the first circuit board assembly (1p) is located between the second connecting plate (1c) and the operating mechanism (7b) in direction d3; in direction d2, the second circuit board (2-1p) of the second circuit board assembly (2p) is located on one side of the operating mechanism (7b) and the electric reclosing mechanism (8b), and the thermal tripping mechanism (9b) and the magnetic tripping mechanism (10b) are arranged on the other side of the operating mechanism (7b) and the electric reclosing mechanism (8b).

9. The circuit breaker according to claim 8, characterized in that: The circuit breaker further comprises an inner shell (2a) arranged in the outer shell (1a); an operating mechanism (7b), an electric reclosing mechanism (8b), a first circuit board assembly (1p), a thermal tripping mechanism (9b), a magnetic tripping mechanism (10b), a contact system (11b) and an arc extinguishing chamber (12-1b) are all arranged in the inner shell (2a); a second circuit board (2-1p) is arranged between the inner shell (2a) and the outer shell (1a) and is arranged side by side with the inner shell (2a) along a direction d2; and a first connecting plate (14b) and a second connecting plate (1c) are respectively located on both sides of the inner shell (2a) in a direction d3.

10. The circuit breaker according to claim 9, characterized in that: The outer shell (1a) comprises a first outer half shell (1-1a) and a second outer half shell (1-2a) relatively joined together along a direction d2; the inner shell (2a) comprises a first inner half shell (2-1a) and a second inner half shell (2-2a) relatively joined together along a direction d3.

11. The circuit breaker according to claim 6, wherein: The operating mechanism (7b) comprises a front connecting rod (7-1b), a second rotating shaft (7-2b), a rear connecting rod (7-3b), a first rotating shaft (7-4b), a third connecting rod (7-5b), a locking component (7-6b) and a main reset component (7-8b); the second rotating shaft (7-2b) and the first rotating shaft (7-4b) are respectively rotatably arranged, and the rotation axes are both parallel to the direction d3; the third connecting rod (7-5b) and the locking component (7-6b) are snap-fitted and rotatably arranged on the first rotating shaft (7-4b), and the rotation axes are both parallel to the direction d3; In direction d3, the handle (1b) is connected to the second rotating shaft (7-2b) through the front connecting rod (7-1b) to drive the second rotating shaft (7-2b) to rotate, the second rotating shaft (7-2b) is connected to the third connecting rod (7-5b) through the rear connecting rod (7-3b) to drive the third connecting rod (7-5b), the locking component (7-6b) and the first rotating shaft (7-4b) to rotate synchronously, and the main reset component (7-8b) acts on the first rotating shaft (7-4b) to make it have a rotation tendency to drive the moving contact (11-1b) to move to the disconnected position.

12. The circuit breaker according to claim 6, wherein: The circuit breaker further comprises an indicating mechanism (i) for indicating the opening and closing state of the circuit breaker. The indicating mechanism (i) is arranged in the handle (1b) and slides synchronously therewith.

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