Plug-in circuit breaker

Abstract

A pluggable circuit breaker includes at least one circuit breaker pole unit. Each circuit breaker pole unit includes a housing and a contact mechanism, an operating mechanism, a button mechanism, an arc-extinguishing mechanism, a short-circuit protection mechanism, an overload protection mechanism, a pluggable wiring mechanism, and a second wiring mechanism, all disposed within the housing. The second wiring mechanism includes a connecting piece with a first connecting hole. A through hole is provided on the front or top side adjacent to the front side, or on the bottom side adjacent to the front side. The first connecting hole is located outside the housing. Alternatively, the second wiring mechanism includes a wiring piece and a fixing member. The housing has a wiring hole for a conductor to pass through, and an operating hole corresponding to the fixing member. One of the wiring hole and the operating hole is located on the front side of the housing, and the other is located on the top or bottom side perpendicular to the front side. A wiring hole with a larger inner diameter can be provided on the housing.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a plug-in circuit breaker. Background Technology

[0002] With the rapid development of the communications industry, the trend towards miniaturization of circuit breakers is becoming increasingly apparent. While customers demand smaller circuit breakers, they also have increasingly higher requirements for safety performance and ease of operation. Currently, in high-current applications with 1U circuit breakers, the conductor diameter is relatively large. The size of the wiring holes on the circuit breaker housing for inserting conductors is limited by the circuit breaker's size, leading to difficulties in wiring when inserting conductors into the cabinet. Summary of the Invention

[0003] The purpose of this utility model is to overcome at least one defect of the prior art and provide a plug-in circuit breaker.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A pluggable circuit breaker includes at least one circuit breaker pole unit. Each circuit breaker pole unit includes a housing and a contact mechanism, an operating mechanism, a button mechanism, an arc-extinguishing mechanism, a short-circuit protection mechanism, an overload protection mechanism, a pluggable wiring mechanism, and a second wiring mechanism, all respectively disposed within the housing. The pluggable wiring mechanism and the second wiring mechanism are disposed opposite to each other at both ends of the housing. The contact mechanism includes a moving contact and a stationary contact, which are electrically connected to the pluggable wiring mechanism and the second wiring mechanism, respectively. The button mechanism is connected to the operating mechanism, which is also connected to the moving contact. The housing includes a front side and a back side disposed opposite to each other at both ends, and a top side and a bottom side disposed opposite to each other. The top side and the bottom side are respectively connected between the front side and the back side. The button mechanism is disposed on the front side. The back side or the top side has an insertion hole corresponding to the pluggable wiring mechanism.

[0006] The second wiring mechanism includes a connecting piece, on which a first connecting hole is provided, and a through hole is provided on the front side, or the top side adjacent to the front side, or the bottom side adjacent to the front side, and the first connecting hole is provided outside the housing through the through hole;

[0007] Alternatively, the second wiring mechanism includes a connector and a fixing member. The housing is provided with a wiring hole for passing a wire through, and an operating hole corresponding to the fixing member. One of the wiring hole and the operating hole is located on the front side of the housing, and the other is located on the top side or bottom side perpendicular to the front side.

[0008] Preferably, the fixing element is a wiring screw or a wiring plate, used to fix the wire to the wiring plate.

[0009] Preferably, the front side is provided with a through hole, the connecting piece is parallel to the top side, and one end of the connecting piece with the first connecting hole extends to the outside of the housing through the through hole.

[0010] Preferably, the front side has a through hole, the end of the connecting piece located outside the housing has a bent portion, the first connecting hole is located on the bent portion, the connecting piece is parallel to the top side, and the bent portion is parallel to the front side.

[0011] Preferably, the housing is provided with a support platform extending between the connecting piece and the bending portion, the bending portion being located outside the housing, and the support platform extending outside the housing to cooperate with the bending portion; or, the bending portion is located inside the housing, and the bending portion is correspondingly arranged with the through hole, so that the first connecting hole protrudes outside the housing, and the support platform is located inside the housing to cooperate with the bending portion.

[0012] Preferably, a through hole is provided at a position adjacent to the front side of the top side or the position adjacent to the front side of the bottom side, and the connecting piece is parallel to the top side. The portion of the connecting piece with the first connecting hole is arranged to correspond to the through hole so that the through hole protrudes outside the housing.

[0013] Preferably, the front side has a wiring notch at the connection point with the top or bottom side having a through hole, the wiring notch communicates with the through hole, and the connecting piece is parallel to the top side and located inside the housing.

[0014] Preferably, the outer side of the housing is provided with a terminal cover, the connecting piece is disposed inside the terminal cover, and the terminal cover is provided with a wiring port.

[0015] Preferably, the terminal cover has a wiring port on the side perpendicular to the connecting piece, and an operation port on the side parallel to the connecting piece.

[0016] Preferably, the terminal cover is integrally formed with the housing, or the terminal cover is detachably connected to the housing.

[0017] Preferably, the length of the terminal cover is equal to or less than the length of the button mechanism extending outside the housing.

[0018] Preferably, the terminal cover is slidably mounted on the front side of the housing and can move between a first position retracted into the housing and a second position extended out of the housing.

[0019] Preferably, the second wiring mechanism includes a connector, a connector base, and a fixing member. The front side of the housing is provided with a wiring hole for passing a wire, and the bottom or top side of the housing is provided with an operating hole corresponding to the fixing member.

[0020] Preferably, the second wiring mechanism includes a connector, a connector base, and a fixing member. The front side of the housing is provided with an operating hole corresponding to the fixing member, and the top or bottom side of the housing is provided with a wiring hole for passing a wire.

[0021] Preferably, the circuit breaker includes two circuit breaker pole units arranged side by side, with the button mechanism of each circuit breaker pole unit located on its respective front side, and the second wiring mechanism of each circuit breaker pole unit having a connecting piece; the connecting piece is located on the front side of the housing, and the connecting pieces of the two circuit breaker pole units are located on the same plane, or the connecting pieces of the two circuit breaker pole units are arranged in parallel and located on different planes.

[0022] Preferably, the operating mechanism includes a contact support, a latch and a snap fastener respectively rotatably mounted on the contact support and engaging with each other, and an energy storage spring connected to the contact support. The moving contact is mounted on the contact support. When the latch and snap fastener are engaged, the button mechanism can drive the contact support to rotate through the operating mechanism, causing the moving contact to contact and separate from the stationary contact. When the latch and snap fastener are separated, the energy storage spring drives the contact support to rotate, causing the moving contact and stationary contact to separate.

[0023] Preferably, the device includes a handle mechanism, a contact support, and a blocking component. The handle mechanism and the blocking component are rotatably housed within the housing. The button mechanism drives the handle mechanism via a first connecting rod, and the handle mechanism drives the contact support to rotate via a second connecting rod. The contact support has a support shaft, and the blocking component has a groove fitted onto the support shaft. The groove contains a blocking portion that blocks the support shaft as the moving contact approaches the stationary contact. When the thrust of the support shaft on the blocking portion is less than the resistance of the blocking portion, the blocking portion blocks the support shaft, causing the contact support to stop rotating. This continues until the thrust of the support shaft on the blocking portion exceeds the resistance of the blocking portion, causing the blocking component to move away from the support shaft under the push of the support shaft. Simultaneously, the button mechanism, driven by the increased operating force, drives the contact support to rotate, allowing the moving contact to quickly contact the stationary contact.

[0024] The plug-in circuit breaker of this utility model has a plug-in wiring mechanism and a second wiring mechanism respectively located at opposite ends of the housing. The housing is provided with through holes for the connecting piece to pass through, so that the connecting piece extends out of the housing and connects to the wire without having to insert the wire into the housing. Therefore, it can connect wires with thicker diameters.

[0025] Alternatively, one of the wiring hole and the operating hole can be located on the front side of the housing, and the other on the top or bottom side perpendicular to the front. Instead of placing the wiring hole and the operating hole on the same side of the housing, they can be located on two different sides of the housing, the front and top sides, or the front and bottom sides. This allows for wiring holes with larger inner diameters to be provided on the housing, enabling the passage of thicker wires and avoiding the problem of wires that are too thick to be inserted into the housing.

[0026] In addition, the terminal cover can not only improve the insulation between the second wiring mechanism and the outside, as well as the insulation between the second wiring mechanisms of the circuit breaker pole unit, but also prevent users from touching the second wiring mechanism during use, thus avoiding electric shock and improving safety.

[0027] In addition, the terminal cover is slidably mounted on the housing, making wiring more convenient and safer.

[0028] Furthermore, in this embodiment of the plug-in circuit breaker, the initial blocking member first blocks the contact support when the contact support drives the moving contact to swing towards the stationary contact. Then, the blocking member releases its obstruction of the contact support to achieve rapid closing, reducing the arcing time between the moving and stationary contacts during the closing process. At the same time, a sliding groove is provided on the blocking member, and the support shaft on the contact support slides in the sliding groove and cooperates with the raised blocking part. The sliding groove has a guiding and limiting function, and the two limit each other to prevent misalignment. This not only makes the structure simpler and occupies less space, but also has high reliability and can greatly extend the service life of the contact mechanism. Attached Figure Description

[0029] Figure 1 This is one embodiment of the plug-in circuit breaker of this utility model;

[0030] Figure 2 This is Embodiment 2 of the plug-in circuit breaker of this utility model;

[0031] Figure 3 This is Embodiment 3 of the plug-in circuit breaker of this utility model;

[0032] Figure 4 This is Embodiment 4 of the plug-in circuit breaker of this utility model;

[0033] Figure 5 This is Embodiment 5 of the plug-in circuit breaker of this utility model;

[0034] Figure 6 This is Embodiment Six of the plug-in circuit breaker of this utility model;

[0035] Figure 7 This is Embodiment Seven of the Plug-in Circuit Breaker of this Utility Model;

[0036] Figure 8This is embodiment eight of the plug-in circuit breaker of this utility model;

[0037] Figure 9 This is Embodiment Nine of the plug-in circuit breaker of this utility model;

[0038] Figure 10 This is a schematic diagram of the internal structure of the plug-in circuit breaker of this utility model;

[0039] Figure 11 This is a utility model Figure 10 A schematic diagram of the structure hidden on the back side of the shell;

[0040] In the figure, the circuit breaker pole unit 1; button mechanism 11; arc extinguishing mechanism 12; short circuit protection mechanism 13; overload protection mechanism 14; plug-in wiring mechanism 2; second wiring mechanism 3; moving contact 15; stationary contact 16; front side 41; back side 42; top side 43; bottom side 44; insertion hole 45; connecting piece 31; first connecting hole 32; wiring piece 33; terminal block 34; wiring screw 35; wiring hole 46; operating hole 47; through hole 48; wiring notch 49; contact support 51; latch 52; jumper 53; handle mechanism 17; blocking member 18; support shaft 19; slide groove 180; bending part 36; support platform 30; terminal cover 37; wiring port 38; operating port 39. Detailed Implementation

[0041] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the plug-in circuit breaker of this utility model. The plug-in circuit breaker of this utility model is not limited to the descriptions in the following embodiments.

[0042] like Figure 1-11 As shown, the pluggable circuit breaker of this embodiment is typically installed in a cabinet and includes at least one circuit breaker pole unit 1. The circuit breaker pole unit 1 includes a housing and a contact mechanism, an operating mechanism, a button mechanism 11, an arc extinguishing mechanism 12, a short-circuit protection mechanism 13, an overload protection mechanism 14, a pluggable wiring mechanism 2, and a second wiring mechanism 3, which are respectively disposed in the housing. The pluggable wiring mechanism 2 and the second wiring mechanism 3 are disposed opposite to each other at both ends of the housing. The pluggable wiring mechanism 2 and the second wiring mechanism 3 are respectively used to connect to the busbar of the external line (not shown in the diagram) and the conductor (not shown in the diagram). The button mechanism 11 and the second wiring mechanism 3 are located at the same end of the housing. When the pluggable circuit breaker is inserted into the cabinet, the pluggable wiring mechanism 2 is plugged into the busbar in the cabinet to connect to the power supply. The button mechanism 11 and the second wiring mechanism 3 are located on the outside to facilitate opening and closing operations through the button mechanism 11 and to facilitate wiring.

[0043] The internal structure of plug-in circuit breakers can be referenced. Figure 10-11This is an embodiment. The contact mechanism is located between the plug-in wiring mechanism 2 and the second wiring mechanism 3. The contact mechanism includes a moving contact 15 and a stationary contact 16, which are electrically connected to the plug-in wiring mechanism 2 and the second wiring mechanism 3, respectively. The plug-in wiring mechanism 2 can be electrically connected to either the moving contact 15 or the stationary contact 16, and the corresponding second wiring mechanism 3 is electrically connected to either the stationary contact 16 or the moving contact 15. The button mechanism 11 is connected to the operating mechanism, and the operating mechanism is connected to the moving contact 15. Mechanism 11 drives the moving contact 15 to swing and contact and separate from the stationary contact 16 to realize the closing and opening of the circuit breaker. Arc extinguishing mechanism 12 is set adjacent to the moving contact 15 and the stationary contact 16 to extinguish the electric arc generated when the moving contact 15 and the stationary contact 16 are opened and closed. Short circuit protection mechanism 13 and overload protection mechanism 14 are connected to the main circuit and are used to drive the operating mechanism to trip and drive the moving contact 15 and the stationary contact 16 to trip and separate when a short circuit or overload fault occurs in the main circuit, so as to realize protection.

[0044] The housing includes two opposing sides, a front side 41 and a back side 42, and two opposing sides, a top side 43 and a bottom side 44, and two opposing sides, a first side and a second side, which are parallel to the plane of the paper. The top side 43 and the bottom side 44, as well as the first side and the second side, are respectively connected between the front side 41 and the back side 42. The housing is basically in the shape of an elongated hexahedron. The button mechanism 11 and the second wiring mechanism 3 are disposed on the front side 41. The back side 42 is correspondingly disposed with the plug-in wiring mechanism 2. The back side 42 or the top side 43 is provided with an insertion hole 45 corresponding to the plug-in wiring mechanism 2, so that the busbar can be inserted into the housing through the insertion hole 45 and connected to the plug-in wiring mechanism 2.

[0045] It should be noted that the internal structure of plug-in circuit breakers is not limited to... Figure 10-11 In the embodiments described, when a plug-in circuit breaker includes multiple circuit breaker pole units 1, each circuit breaker pole unit 1 may have its own independent housing, or they may share a single housing separated by a partition; both are acceptable. Depending on the needs, the plug-in circuit breaker may include an electric operating mechanism and a leakage protection mechanism; while the short-circuit protection mechanism 13 and the overload protection mechanism 14 may be omitted or other implementation schemes may be adopted, and the operating mechanism may also adopt other implementation schemes.

[0046] like Figure 1-2As shown, the second wiring mechanism 3 includes a connecting piece 31 that is directly or indirectly connected to the moving contact 15 or the stationary contact 16. The connecting piece 31 is provided with a first connecting hole 32 for connecting a wire lug. The wire lug (not shown in the figure) is provided with a second connecting hole (not shown in the figure) for a connecting screw to pass through. The connecting screw passes through the second connecting hole and connects to the first connecting hole 32, so that the wire lug is connected to the connecting piece 31. The front side 41, or the top side 43 near the front side 41, or the bottom side 44 near the front side 41 is provided with a through hole 48. The through hole 48 is used to expose the first connecting hole 32 on the connecting piece 31. The first connecting hole 32 is provided outside the housing through the through hole 48.

[0047] Or, such as Figure 8-9 As shown, the second wiring mechanism 3 includes a connector 33, a terminal block 34, and a fixing component. The fixing component is a wiring screw 35 or a wiring tile, etc. The wiring tile can press the wire tightly onto the connector 33. In this embodiment, the fixing component is a wiring screw 35. One end of the connector 33 is directly or indirectly electrically connected to the moving contact 15 or the stationary contact 16. The end of the connector 33 away from the moving contact 15 is inserted into the terminal block 34. The terminal block 34 is threadedly engaged with the wiring screw 35. When the wiring screw 35 rotates, it can fix the wire onto the connector. On the housing 33, the top side 43 and bottom side 44 of the housing are respectively arranged perpendicular to the front side 41. The housing is provided with a wiring hole 46 for passing wires through, and an operating hole 47 corresponding to the wiring screw 35. The wiring hole 46 allows the wire to be inserted into the terminal block 34 through the wiring hole 46. The operating hole 47 is used to pass a screwdriver through, so that the screwdriver drives the wiring screw 35 to rotate. One of the wiring hole 46 and the operating hole 47 is provided on the front side 41 of the housing, and the other is provided on the top side 43 or the bottom side 44 which is perpendicular to the front side.

[0048] In this embodiment of the plug-in circuit breaker, the plug-in wiring mechanism 2 and the second wiring mechanism 3 are respectively located at opposite ends of the housing. The housing is provided with a through hole 48 for the connecting piece 31 to pass through, so that the connecting piece 31 extends out of the housing and connects with the wire, without having to insert the wire into the housing. Therefore, thicker wires can be connected.

[0049] Alternatively, one of the wiring hole 46 and the operating hole 47 can be located on the front side 41 of the housing, and the other can be located on the top side 43 or the bottom side 44, which is perpendicular to the front side. It is not necessary to place the wiring hole 46 and the operating hole 47 on the same side of the housing. Instead, the wiring hole 46 and the operating hole 47 can be located on two different sides of the housing, the front side 41 and the top side 43, or the front side 41 and the bottom side 44. Therefore, the housing can be provided with a wiring hole 46 with a larger inner diameter, so that a thicker wire can pass through, avoiding the problem that the wire is too thick to be inserted into the housing.

[0050] like Figure 1 As shown in this embodiment, the two-pole circuit breaker includes two circuit breaker pole units 1 arranged side by side. The button mechanisms 11 of the two circuit breaker pole units 1 are located on the same side. The button mechanisms 11 of the two circuit breaker pole units 1 can be integrated, and pressing the button mechanism 11 can simultaneously actuate the moving contacts 15 of the two circuit breaker pole units 1. Alternatively, the button mechanisms 11 of the two circuit breaker pole units 1 can be two connected parts, where pressing one actuates the other. It is understood that the circuit breaker can also be single-pole or multi-pole, that is, it can have one or more of the circuit breaker pole units 1.

[0051] like Figure 10 As shown, the operating mechanism in this embodiment includes a contact support 51, a latch 52 and a jumper 53 respectively rotatably mounted on the contact support 51 and interlocking with each other, and an energy storage spring connected to the contact support 51. The moving contact 15 is mounted on the contact support 51. When the latch 52 and the jumper 53 are engaged, the latch 52 can lock the jumper 53 and play a transmission role between the contact support 51 and the button mechanism 11, so that the button mechanism 11 can drive the contact support 51 to rotate through the operating mechanism, causing the moving contact 15 to contact and separate from the stationary contact 16. The contact support 51 compresses the energy storage spring when the moving contact 15 and the stationary contact 16 are in contact. In this embodiment, the moving contact 15 is connected to the second wiring mechanism 3 through the overload protection mechanism 14, and the stationary contact 16 is connected to the second wiring mechanism 3 through the overload protection mechanism 14. The short-circuit protection mechanism 13 is connected to the plug-in wiring mechanism 2. When the moving contact 15 contacts the stationary contact 16, the current in the main circuit passes through the plug-in wiring mechanism 2, the overload protection mechanism 14, the moving contact 15, the stationary contact 16, the short-circuit protection mechanism 13, and the second wiring mechanism 3 in sequence. When a short circuit and an overload occur in the main circuit, the short-circuit protection mechanism 13 and the overload protection mechanism 14 respectively drive the latch 52 and the trip latch 53 to disengage, causing the latch 52 and the trip latch 53 to separate. When the latch 52 and the trip latch 53 separate, the trip latch 53 is freely rotatably mounted on the contact support 51. The handle mechanism cannot constrain the contact support 51 through the trip latch 53, and the energy storage spring is released. The energy storage spring drives the contact support 51 to rotate, causing the moving contact 15 and the stationary contact 16 to separate, disconnecting the main circuit and realizing the protection function.

[0052] like Figure 10-11As shown, the circuit breaker pole unit 1 in this embodiment is further provided with a handle mechanism 17 and a blocking member 18. The handle mechanism 17 and the blocking member 18 are rotatably disposed in the housing. The button mechanism 11 drives the handle mechanism 17 to move through the first connecting rod. When the handle mechanism 17 moves, it drives the contact support 51 to rotate through the second connecting rod. The moving contact 15 is disposed on the contact support 51. When the contact support 51 rotates, it drives the moving contact 15 to contact and separate from the stationary contact 16. The contact support 51 is provided with a support shaft 19. The blocking member 18 is rotatably disposed. The blocking member 18 is provided with a sliding groove 180 sleeved on the support shaft 19. The sliding groove 180 is provided to block the support shaft 19 when the moving contact 15 approaches the stationary contact 16. The blocking part 181 of 9; when the thrust F of the support shaft 19 on the blocking part 181 is less than the resistance F of the blocking part 181, the blocking part 181 blocks the support shaft 19, causing the contact support 51 to stop rotating. The moving contact 15 and the stationary contact 16 are kept at a safe distance from arcing. The button mechanism 11 needs to apply a greater operating force to the contact support 51. At this time, the operating force on the button mechanism 11 is increased until the thrust F of the support shaft 19 on the blocking part 181 is greater than the resistance F of the blocking part 181. The blocking part 181 is driven away from the support shaft 19 by the pushing of the support shaft 19. At the same time, the button mechanism 11 drives the contact support 51 to rotate under the increased operating force, so that the moving contact 15 and the stationary contact 16 quickly come into contact.

[0053] In this embodiment of the plug-in circuit breaker, the initial blocking member 18 blocks the contact support 51 as the moving contact 15 swings towards the stationary contact 16. Afterwards, the blocking member 18 releases its obstruction of the contact support 51 to achieve rapid closing, reducing the arcing time between the moving and stationary contacts during the closing process. Simultaneously, the blocking member 18 is provided with a sliding groove 180, in which the support shaft 19 on the contact support 51 slides and engages with the protruding blocking part 181. The sliding groove 180 has a guiding and limiting function, and the two mutually limit each other to prevent misalignment. This not only simplifies the structure and reduces space occupation but also increases reliability and significantly extends the service life of the contact mechanism. It should be noted that the plug-in circuit breaker may also omit the blocking member 18, and the operating mechanism may also employ other four-bar or five-bar linkage techniques.

[0054] like Figure 11 As shown, the plug-in / plug-out wiring mechanism 2 includes an elastic element, which includes two opposing clamps. The two clamps have opposing curved portions. The elastic element is used to fit onto the busbar, so that the two clamps fix the busbar from both sides. One of the clamps is connected to the short-circuit protection mechanism 13. The short-circuit protection mechanism 13 includes a conductive element, a magnetic yoke, and an armature. The conductive element is connected between the elastic element and the stationary contact 16. When the short-circuit current passes through the conductive element, it attracts the armature to rotate and drives the operating mechanism to trip.

[0055] In the following embodiments, the second wiring mechanism 3 in Embodiments 1 to 6 is the connecting piece 31 that extends out of the housing, and the second wiring mechanism 3 in Embodiments 7 and 8 includes the connecting piece 33, the terminal block 34 and the wiring screw 35.

[0056] Example 1

[0057] like Figure 1 As shown, the second wiring mechanism 3 in this embodiment includes a connecting piece 31. The connecting piece 31 and the button mechanism 11 are disposed on the same side surface 41 of the housing. The side surface 41 of the housing is provided with a through hole 48 for the connecting piece 31 to pass through. The connecting piece 31 is parallel to the top side surface 43 and the bottom side surface 44. One end of the connecting piece 31 with a first connecting hole 32 extends to the outside of the housing through the through hole 48. The connecting pieces 31 of the two circuit breaker pole units 1 are located on the same plane.

[0058] Example 2

[0059] like Figure 2 As shown, the second wiring mechanism 3 in this embodiment includes a connecting piece 31. The connecting piece 31 and the button mechanism 11 are disposed on the same side surface 41 of the housing. The side surface 41 of the housing is provided with a through hole 48 for the connecting piece 31 to pass through. The connecting piece 31 is parallel to the top side surface 43 and the bottom side surface 44. One end of the connecting piece 31 with a first connecting hole 32 extends to the outside of the housing through the through hole 48. The connecting pieces 31 of the two circuit breaker pole units 1 are arranged in parallel, and the connecting pieces 31 of the two circuit breaker pole units 1 are located in different planes.

[0060] Example 3

[0061] like Figure 3 As shown, the second wiring mechanism 3 in this embodiment includes a connecting piece 31. The connecting piece 31 is disposed on the top side 43 or bottom side 44 adjacent to the front side 41 where the button mechanism 11 is located. The connecting piece 31 is located at one end of the top side 43 or bottom side 44 adjacent to the front side 41. A through hole 48 is provided on the top side 43 or bottom side 44 of the housing. One end of the connecting piece 31 with a first connecting hole 32 is correspondingly disposed with the through hole 48, so that the first connecting hole 32 protrudes outside the housing and can be directly connected to the wiring lug. The connecting pieces 31 of the two circuit breaker pole units 1 are located on the same plane. The connecting piece 31 is parallel to the top side 43. In the figure, the through hole 48 is disposed on the top side 43; obviously, the through hole 48 can also be disposed on the bottom side 44.

[0062] Preferably, the top side surface 43 is provided with a through hole 48, and the through hole 48 communicates with the front side surface 41. The front side surface 41 is provided with a wiring notch 49 at the connection point with the top side surface 43. The wiring notch 49 communicates with the through hole 48, so that the through hole 48 communicates with the front side surface 41, so that the wiring lug can extend from the wiring notch 49 and connect with the connecting piece 31. The connecting piece 31 is parallel to the top side surface 43 and is located inside the housing. That is, the part of the connecting piece 31 with the first connecting hole 32 is correspondingly provided with the through hole 48 and does not protrude from the top side surface 43.

[0063] Preferably, the connecting piece 31 is parallel to the top side surface 43 and does not protrude from the front side surface 41. Of course, the connecting piece 31 may also protrude from the front side surface 41, which would be similar to Embodiment 1, but further away from the button mechanism 11.

[0064] Example 4

[0065] like Figure 4 As shown, the second wiring mechanism 3 in this embodiment includes a connecting piece 31. The connecting piece 31 and the button mechanism 11 are disposed on the same side surface 41 of the housing. The side surface 41 of the housing has a through hole 48 for the connecting piece 31 to pass through. The connecting pieces 31 of the two circuit breaker pole units 1 are respectively provided with bent portions 36 at their ends outside the housing. A first connecting hole 32 is disposed on the bent portion 36. The bent portions 36 of the two circuit breaker pole units 1 are located on the same plane. The connecting piece 31 is arranged parallel to the insertion direction of the circuit breaker pole unit 1. The bent portion 36 is arranged parallel to the insertion direction of the circuit breaker pole unit 1. The vertical arrangement, i.e., the connecting piece 31 is parallel to the top side 43, and the bending part 36 is parallel to the front side 41, and the housing is provided with a support platform 30 extending between the connecting piece 31 and the bending part 36, in this embodiment the bending part 36 extends outside the housing, and at the same time the support platform 30 extends outside the housing and cooperates with the bending part 36. The bending part 36 can also be located inside the housing and flush with the front side of the housing, i.e. the bending part 36 is correspondingly arranged with the through hole 48, so that the first connecting hole 32 is exposed outside the housing, and the support platform 30 does not need to extend outside the housing to cooperate with the bending part 36, all of which are within the protection scope of this utility model.

[0066] In this embodiment, the bent portion 36 is located on the side of the connecting piece 31 away from the button mechanism 11, and the bent portion 36 is located on the side of the connecting piece 31 that is bent upwards. In other embodiments, the bent portion 36 may also be located on the side of the connecting piece 31 close to the button mechanism 11, and the bent portion 36 may be located on the side of the connecting piece 31 that is bent downwards. However, it is necessary to adjust the position of the connecting piece 31 and increase the distance between the connecting piece 31 and the handle.

[0067] Example 5

[0068] like Figure 5 As shown, the second wiring mechanism 3 in this embodiment is the same as the one described above. Figure 3The embodiment shown is the same as the first embodiment, except that a terminal cover 37 is added to the outside of the housing. The connecting piece 31 is disposed inside the terminal cover 37. The terminal cover 37 is provided with a wiring port 38 for passing wires through.

[0069] Specifically, the terminal cover 37 has a wiring port 38 on its side perpendicular to the connecting piece 31. The wiring port 38 is used to pass through the wiring lug, allowing the wiring lug to be inserted into the terminal cover 37 and extend to the side of the connecting piece 31. The terminal cover 37 has an operation port 39 on its side parallel to the connecting piece 31. The operation port 39 is located on the side of the terminal cover 37 near or away from the button mechanism 11. The operation port 39 is used to pass through the connecting screw and the screwdriver used to tighten the connecting screw. The terminal cover 37 can not only improve the insulation between the second wiring mechanism 3 and the outside, as well as the insulation between the second wiring mechanisms 3 of the circuit breaker pole unit 1, but also prevent the user from touching the second wiring mechanism 3 with their limbs during use, avoiding electric shock to the user and improving safety.

[0070] In this embodiment, the operation port 39 is located on the side of the terminal cover 37 away from the button mechanism 11, or it can be located on the side of the terminal cover 37 close to the button mechanism 11, or it can be located on the opposite sides of the two circuit breaker pole units 1. In this embodiment, the operation port 39 is U-shaped, or it can be round or rectangular, all of which are within the protection scope of this utility model.

[0071] Preferably, the length of the terminal cover 37 is equal to or less than the length of the button mechanism 11 extending outside the housing. It is understood that the terminal cover 37 can be integrally formed with the housing or can be installed separately on the housing. For example, the terminal cover 37 may have a long track with a T-shaped, dovetail-shaped, or other shaped cross-section, and the housing may have a groove 180 for inserting the track. Alternatively, the positions of the track and the groove 180 may be interchanged, with the terminal cover 37 having a groove 180 that fits onto the track in the housing. A snap-fit ​​structure may also be provided on the housing and the terminal cover 37 for positioning; all of these are within the scope of protection of this utility model.

[0072] Preferably, the terminal cover 37, similar to the button mechanism 1, is slidably mounted on the front side 41 of the housing. It can move between a first position retracted into the housing and a second position extended outside the housing. When the terminal cover 37 is retracted, it facilitates wiring between the connecting piece 31 and the wiring lug. After wiring, the terminal cover 37 moves to the second position extended outside the housing, providing protection. Thus, the terminal cover 37 does not need an operating port 39, and wiring is more convenient and safer.

[0073] Example 6

[0074] like Figure 6 As shown, the second wiring mechanism 3 in this embodiment is the same as the one described above. Figure 4The illustrated embodiment is the same as that of embodiment four, and belongs to the case where the bent portion 36 is located on the side of the connecting piece 31 away from the button mechanism 11. The difference is that this embodiment adds the terminal cover 37 of embodiment five above, and swaps the positions of the operation port 39 and the wiring port 38. In this embodiment, the operation port 39 is arranged opposite to the front side 41, and the wiring port 38 is arranged on the side of the terminal cover 37 near or away from the button mechanism 11. In this embodiment, the wiring port 38 is arranged on the side of the terminal cover 37 near the button mechanism 11.

[0075] Example 7

[0076] like Figure 7 As shown, the second wiring mechanism 3 in this embodiment is the same as the one described above. Figure 4 The embodiment shown is the same as that of embodiment four, and belongs to the case where the bent part 36 is located on the side of the connecting piece 31 near the button mechanism 11. The difference is that the wiring port 38 of this embodiment is located on the side of the terminal cover 37 away from the button mechanism 11.

[0077] Example 8

[0078] like Figure 8 As shown, the second wiring mechanism 3 in this embodiment includes a connector 33, a connector 34, and a connector screw 35. The front side 41 of the housing is provided with a wiring hole 46 for passing a wire, and the bottom side 44 of the housing is provided with an operating hole 47 corresponding to the connector screw 35. Of course, the operating hole 47 can also be provided on the top side 43 opposite to the bottom side 44, both of which are within the protection scope of this utility model.

[0079] First, pass the wire through the wiring hole 46 to insert it into the side of the connector 33. Then, use a screwdriver to pass through the operating hole 47 and turn the wiring screw 35 to fix the wire to the connector 33. In this embodiment, the connector 34 is fixedly installed in the housing. When the wiring screw 35 is turned, it moves radially under the action of the thread of the connector 34, moving closer to and away from the connector 33. The wire is inserted between the wiring screw 35 and the connector 33, and the wire is clamped by the wiring screw 35 and the connector 33. In other embodiments, the connector 34 can also be movable. When the wiring screw 35 is turned, it does not move radially, but moves the connector 34 through the thread. The wire is clamped by the connector 34 and the connector 33. All of these are within the protection scope of this utility model.

[0080] Example 9

[0081] like Figure 9As shown, the second wiring mechanism 3 in this embodiment includes a connector 33, a connector 34, and a connector screw 35. The front side 41 of the housing is provided with an operating hole 47 corresponding to the connector screw 35, and the top side 43 of the housing is provided with a connector hole 46 for passing wires through. Of course, the operating hole 47 can also be provided on the bottom side 44 opposite to the top side 43, both of which are within the protection scope of this utility model.

[0082] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0083] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A pluggable circuit breaker, comprising at least one circuit breaker pole unit (1), the circuit breaker pole unit (1) comprising a housing and a contact mechanism, an operating mechanism, a push-button mechanism (11), an arc extinguishing mechanism (12), a short-circuit protection mechanism (13), an overload protection mechanism (14), a pluggable wiring mechanism (2), and a second wiring mechanism (3) respectively disposed in the housing, the pluggable wiring mechanism (2) and the second wiring mechanism (3) being disposed opposite to each other at both ends of the housing, the contact mechanism comprising a moving contact (15) and a stationary contact (16), the moving contact (15) and the stationary contact (16) being respectively connected to the pluggable wiring mechanism (2) and the second wiring mechanism (3) are electrically connected. The button mechanism (11) is connected to the operating mechanism. The operating mechanism is connected to the moving contact (15). The housing includes a front side (41) and a back side (42) that are arranged opposite to each other at both ends, and a top side (43) and a bottom side (44) that are arranged opposite to each other. The top side (43) and the bottom side (44) are respectively connected between the front side (41) and the back side (42). The button mechanism (11) is arranged on the front side (41). The back side (42) or the top side (43) is provided with an insertion hole (45) corresponding to the plug-in wiring mechanism (2). Its features are: The second wiring mechanism (3) includes a connecting piece (31), the connecting piece (31) is provided with a first connecting hole (32), and the front side (41), or the top side (43) adjacent to the front side (41), or the bottom side (44) adjacent to the front side (41) is provided with a through hole (48), and the first connecting hole (32) is provided outside the housing through the through hole (48); Alternatively, the second wiring mechanism (3) includes a wiring piece (33) and a fixing member. The housing is provided with a wiring hole (46) for passing a wire through, and an operation hole (47) corresponding to the fixing member. One of the wiring hole (46) and the operation hole (47) is provided on the front side (41) of the housing, and the other is provided on the top side (43) or bottom side (44) which is perpendicular to the front side.

2. The pluggable circuit breaker according to claim 1, characterized in that: The fastener is a wiring screw (35) or a wiring tile, used to fix the wire to the wiring piece (33).

3. The pluggable circuit breaker according to claim 1, characterized in that: The front side (41) is provided with the through hole (48), the connecting piece (31) is parallel to the top side (43), and one end of the connecting piece (31) with the first connecting hole (32) extends to the outside of the housing through the through hole (48).

4. The pluggable circuit breaker according to claim 1, characterized in that: The front side (41) is provided with the through hole (48), and the connecting piece (31) is provided with a bent part (36) at one end outside the housing. The first connecting hole (32) is provided on the bent part (36). The connecting piece (31) is parallel to the top side (43), and the bent part (36) is parallel to the front side (41).

5. The pluggable circuit breaker according to claim 4, characterized in that: The housing is provided with a support platform (30) extending between the connecting piece (31) and the bent part (36). The bent part (36) is located outside the housing, and the support platform (30) extends outside the housing and cooperates with the bent part (36); or, the bent part (36) is located inside the housing, and the bent part (36) is correspondingly arranged with the through hole (48), so that the first connecting hole (32) is exposed outside the housing, and the support platform (30) is located inside the housing and cooperates with the bent part (36).

6. The pluggable circuit breaker according to claim 1, characterized in that: The through hole (48) is provided on the top side (43) near the front side (41) or on the bottom side (44) near the front side (41), and the connecting piece (31) is parallel to the top side (43). The part of the connecting piece (31) with the first connecting hole (32) is provided corresponding to the through hole (48) so that the first connecting hole (32) is exposed outside the housing.

7. The pluggable circuit breaker according to claim 6, characterized in that: The front side (41) has a wiring notch (49) at the connection with the top side (43) or bottom side (44) which has a through hole (48). The wiring notch (49) communicates with the through hole (48). The connecting piece (31) is parallel to the top side (43) and is located inside the housing.

8. The pluggable circuit breaker according to any one of claims 1-7, characterized in that: The outer side of the housing is provided with a terminal cover (37), the connecting piece (31) is provided inside the terminal cover (37), and the terminal cover (37) is provided with a wiring port (38).

9. The pluggable circuit breaker according to claim 8, characterized in that: The terminal cover (37) has a wiring port (38) on the side perpendicular to the connecting piece (31), and an operation port (39) is provided on the side parallel to the connecting piece (31).

10. The pluggable circuit breaker according to claim 8, characterized in that: The terminal cover (37) is integrally formed with the housing, or the terminal cover (37) is detachably connected to the housing.

11. The pluggable circuit breaker according to claim 8, characterized in that: The length of the terminal cover (37) is equal to or less than the length of the button mechanism (11) extending outside the housing.

12. The pluggable circuit breaker according to claim 8, characterized in that: The terminal cover (37) is slidably mounted on the front side (41) of the housing and can move between a first position retracted into the housing and a second position extended out of the housing.

13. The pluggable circuit breaker according to claim 1, characterized in that: The second wiring mechanism (3) includes a wiring piece (33), a wiring base (34) and a fixing member. The front side (41) of the housing is provided with a wiring hole (46) for passing wires through, and the bottom side (44) or top side (43) of the housing is provided with an operating hole (47) corresponding to the fixing member.

14. The pluggable circuit breaker according to claim 1, characterized in that: The second wiring mechanism includes a connector (33), a connector (34), and a fixing member. The front side (41) of the housing is provided with an operating hole (47) corresponding to the fixing member, and the top side (43) or bottom side (44) of the housing is provided with a wiring hole (46) for passing wires through.

15. The pluggable circuit breaker according to claim 1, characterized in that: The device includes two circuit breaker pole units (1) arranged side by side. The button mechanism (11) of the two circuit breaker pole units (1) is arranged on their respective front side (41). The second wiring mechanism (3) of the two circuit breaker pole units (1) is provided with a connecting piece (31). The connecting piece (31) is arranged on the front side (41) of the housing. The connecting pieces (31) of the two circuit breaker pole units (1) are located on the same plane, or the connecting pieces (31) of the two circuit breaker pole units (1) are arranged in parallel and the connecting pieces (31) of the two circuit breaker pole units (1) are located on different planes.

16. The pluggable circuit breaker according to claim 1, characterized in that: The operating mechanism includes a contact support (51), a latch (52) and a snap fastener (53) that are rotatably mounted on the contact support (51) and interlock with each other, and an energy storage spring connected to the contact support (51). The moving contact (15) is mounted on the contact support (51). When the latch (52) and snap fastener (53) are interlocked, the button mechanism (11) can drive the contact support (51) to rotate through the operating mechanism, causing the moving contact (15) to contact and separate from the stationary contact (16). When the latch (52) and snap fastener (53) are separated, the energy storage spring drives the contact support (51) to rotate, causing the moving contact (15) and the stationary contact (16) to separate.

17. The pluggable circuit breaker according to claim 16, characterized in that: The device includes a handle mechanism (17), a contact support (51), and a blocking member (18). The handle mechanism (17) and the blocking member (18) rotate within the housing. The button mechanism (11) drives the handle mechanism (17) to move via a first connecting rod. The handle mechanism (17) drives the contact support (51) to rotate via a second connecting rod. The contact support (51) has a support shaft (19). The blocking member (18) has a groove (180) fitted onto the support shaft (19). The groove (180) is designed to block the support shaft (19) when the moving contact (15) approaches the stationary contact (16). Blocking part (181); When the thrust of the support shaft (19) on the blocking part (181) is less than the resistance of the blocking part (181), the blocking part (181) blocks the support shaft (19) to stop the contact support (51) from rotating until the thrust of the support shaft (19) on the blocking part (181) is greater than the resistance of the blocking part (181), so that the blocking part (18) is driven away from the support shaft (19) by the support shaft (19), and at the same time, the button mechanism (11) drives the contact support (51) to rotate under the increased operating force, so that the moving contact (15) and the stationary contact (16) quickly come into contact.

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