circuit breaker

Abstract

The application relates to the field of low-voltage electrical apparatus, in particular to a circuit breaker, wherein a button is slidably arranged at one end of a circuit breaker shell, a circuit breaking pole is arranged in the circuit breaker shell, the button is connected with a circuit breaking pole operating mechanism of the circuit breaking pole in a driving mode, the circuit breaker further comprises a locking mechanism arranged in the circuit breaker shell, the locking mechanism comprises a drivingly matched operating element and a locking element, and a supporting structure for supporting the operating element and the locking element; the operating element is driven by external force to drive the locking element to switch between a first locking position and a second locking position, the locking element comprises a locking part, the locking part comprises a locking boss and a locking finger; when the locking element is located at the first locking position, the locking boss protrudes outside the circuit breaker shell; when the circuit breaker is in an open state and the locking element is located at the second locking position, the locking boss moves into the circuit breaker shell, and the locking finger is in position cooperation with the button to prevent the button from sliding into the circuit breaker shell; and the circuit breaker has good safety.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to a circuit breaker. Background Art

[0002] With the rapid development of the communication industry, the trend of miniaturization of circuit breakers is becoming more and more obvious, and the power distribution system has higher and higher requirements for the size of circuit breakers. Most existing multi-pole plug-in circuit breakers use multiple independent single-phase plug-in circuit breakers arranged side by side and use linkage parts to connect the buttons of each single-phase plug-in circuit breaker in parallel to achieve the linkage of multiple single-phase plug-in circuit breakers. Such multi-pole circuit breakers have the following defects:

[0003] 1. The addition of linkage parts occupies space;

[0004] 2. The synchronization of each single-phase plug-in circuit breaker is poor;

[0005] 3. There is a lack of a common closing and opening indication mechanism and a locking mechanism. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a circuit breaker with good safety.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A circuit breaker, the circuit breaker includes a circuit breaker housing, a button slidably inserted at one end of the circuit breaker housing, and a breaking pole provided in the circuit breaker housing. The breaking pole includes a breaking pole operating mechanism, and the button is drivingly connected to the breaking pole operating mechanism; the circuit breaker further includes a locking mechanism provided in the circuit breaker housing. The locking mechanism includes an operating member and a locking member that are drivingly配合, and a support structure for supporting the operating member and the locking member; the operating member is actuated by an external force to drive the locking member to switch between a first locking position and a second locking position. The locking member includes a locking portion, and the locking portion includes a locking boss and a locking finger; when the locking member is in the first locking position, the locking boss protrudes outside the circuit breaker housing; when the circuit breaker is in the opening state and the locking member is in the second locking position, the locking boss moves into the circuit breaker housing and the locking finger is in limit配合 with the button to prevent it from sliding into the circuit breaker housing.

[0009] Preferably, the locking member is driven by the operating member to move to switch between a first locking position and a second locking position;

[0010] The middle part of the operating member is rotatably provided on the support structure, and the operating member swings between a first action position and a second action position to drive the locking member to move.

[0011] Preferably, the operating component further includes a locking structure. When the operating component swings to the first operating position, the locking structure engages with the support structure to limit the swing of the operating component to the second operating position.

[0012] Preferably, the locking structure includes two locking feet arranged side by side at intervals, each locking foot having a locking foot protrusion at its free end, and the two locking foot protrusions being located on both sides of the two locking feet; the support structure has a support groove, with a limiting protrusion on each side of the entrance end of the support groove, which respectively cooperates with the two locking foot protrusions.

[0013] Preferably, the operating component is rotatably mounted on the support structure, with one end being the operating part and the other end engaging with the locking component in a driving manner.

[0014] Preferably, the support structure includes a support base and a support cover, which are fastened together to form a space for installing an operating component and a locking component; the operating component is rotatably disposed between the support base and the support cover; and the locking component is slidably disposed between the support base and the support cover.

[0015] Preferably, the operating member and the locking member are hinged. One of the operating member and the locking member is provided with a hinge shaft, and the other is provided with a hinge hole. The hinge shaft is movably inserted into the hinge hole. The hinge hole is an oblong hole. The length of the hinge hole is greater than the outer diameter of the hinge shaft, and the width of the hinge hole matches the outer diameter of the hinge shaft.

[0016] Preferably, the locking component further includes a locking component connecting portion connected to the locking part, and the support base is provided with a locking component groove, and the locking component connecting portion is slidably disposed in the locking component groove.

[0017] Preferably, the support base is further provided with a support arc surface, and the operating part of the operating member slides along the support arc surface.

[0018] Preferably, one end of the locking member connecting part is connected to the locking part, and the other end is provided with a hinge shaft; the locking part is generally L-shaped, one end of the locking finger is connected to the locking boss and the locking member connecting part respectively, and the locking boss and the locking member connecting part are located on both sides of the locking finger, and the other end of the locking finger cooperates with the button.

[0019] Preferably, the operating component further includes an operating component mounting part and an operating component connecting part. The operating component mounting part is provided with an operating component shaft hole, and the operating component connecting part is provided with a hinge hole. The operating part and the operating component connecting part are respectively located at both ends of the operating component, the operating component mounting part is located in the middle of the operating component, and the operating component locking structure is located between the operating component mounting part and the operating part.

[0020] Preferably, the circuit breaker includes multiple circuit breaking poles arranged side by side, each circuit breaking pole includes a rotatable handle, each handle is connected by a linkage shaft to rotate synchronously, and at least one handle is connected to a button drive via a first linkage.

[0021] In the circuit breaker of the present invention, the locking mechanism, in the first locked state (i.e., when the locking member is in the first locked position), has a locking boss protruding outside the circuit breaker housing. The locking boss engages with the circuit breaker mounting position to prevent the circuit breaker from being pulled out or inserted into the circuit breaker mounting position. At this time, the button can freely slide between the open and closed positions to drive the circuit breaker to close or open. When the circuit breaker is in the open state and the locking mechanism is in the second locked state (i.e., when the locking member is in the second locked position), the locking boss moves into the circuit breaker housing, and the locking finger engages with the button to prevent it from sliding into the circuit breaker housing. This prevents the button from sliding from the open position to the closed position to close the circuit breaker, thereby avoiding accidental button activation during the process of pulling the circuit breaker out of the mounting position. The locking mechanism significantly improves electrical safety.

[0022] In addition, the support structure includes a support base and a support cover that interlock, making the locking mechanism a modular unit that can be installed and used as a whole, simplifying the internal structure of the circuit breaker and facilitating its assembly.

[0023] In addition, the operating component also includes a locking structure. When the operating component swings to the first operating position, the locking structure cooperates with the support structure to limit the circuit breaker, thereby stably and reliably limiting the circuit breaker within the circuit breaker installation position and improving electrical safety. Attached Figure Description

[0024] Figure 1 This is an exploded structural diagram of the multi-pole circuit breaker of the present invention;

[0025] Figure 2 This is a schematic diagram of the operating surface structure of the multi-pole circuit breaker of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the base of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the cover of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the multi-pole circuit breaker of the present invention, showing the connection relationship between the button, the first link and the handle;

[0029] Figure 6 This is a schematic diagram of the structure of the multi-pole circuit breaker of the present invention, showing the structure of the first connecting rod;

[0030] Figure 7 This is a schematic diagram of the button structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the installation of the indicating mechanism of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the indicator of the present invention;

[0033] Figure 10 This is a projection diagram of the locking mechanism of the present invention;

[0034] Figure 11 This is an exploded structural diagram of the locking mechanism of the present invention. Detailed Implementation

[0035] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the descriptions in the following embodiments.

[0036] The circuit breaker of the present invention includes a circuit breaker housing, a button 1 slidably inserted at one end of the circuit breaker housing, and at least one breaking pole 14 disposed within the circuit breaker housing. The breaking pole 14 includes a breaking pole operating mechanism and a breaking pole contact system. The breaking pole contact system includes a moving contact and a stationary contact that cooperate with each other. The moving contact is driven and connected to the breaking pole operating mechanism. The button 1 is driven and connected to the breaking pole operating mechanism to drive the breaking pole 14 to close or open.

[0037] like Figures 1-2 As shown in Figures 5-6, the circuit breaker in this embodiment is preferably a multi-pole circuit breaker, and its circuit breaker housing is a multi-pole circuit breaker housing, with multiple circuit breaking poles 14 arranged side by side inside the multi-pole circuit breaker housing.

[0038] like Figure 1 , 3 As shown in Figure 4, the multi-pole circuit breaker housing includes a base 13 and a cover 15, which are engaged with each other to form a housing mounting cavity for mounting multiple circuit breaker poles 14.

[0039] like Figure 1 As shown, each of the circuit breaker poles 14 has its circuit breaker operating mechanism located at one end along its length; the button 1 is located at one end along the length of the multi-pole circuit breaker housing; the circuit breaker poles 14 are aligned with the length of the multi-pole circuit breaker housing, and the parallel orientation of each circuit breaker pole 14 is perpendicular to the length of the multi-pole circuit breaker housing. Furthermore, the bottom walls of the base 13 and the cover 15 are arranged relatively parallel to each other and are respectively located on both sides of each circuit breaker pole 14 (e.g., ...). Figure 1 As shown, the bottom walls of the cover 15 and the base 13 are located on the upper and lower sides of each circuit breaker pole 14, respectively; the parallel direction of each circuit breaker pole 14, the multi-pole circuit breaker housing, and the length direction of each circuit breaker pole 14 are parallel to the plane containing the bottom walls of the base 13 and the cover 15; the thickness direction of each circuit breaker pole 14 is the same as the parallel direction of each circuit breaker pole 14 and perpendicular to the length direction of the multi-pole circuit breaker housing, and the thickness direction of the circuit breaker pole 14 is also parallel to the width direction of the multi-pole circuit breaker housing, that is, each circuit breaker pole 14 is... Figure 1The middle direction is arranged side by side along the width direction of the multi-pole circuit breaker housing (e.g. Figure 1 The direction shown refers to the width direction of the multi-pole circuit breaker housing, i.e., the front-to-back direction.

[0040] Of course, each of the circuit breaking poles can also be arranged side by side along the thickness direction of the multi-pole circuit breaker housing, that is, stacked between the base 13 and the cover 15, and the setting method of the button 1 is also adjusted accordingly.

[0041] like Figure 1 As shown, in the multi-pole circuit breaker, each breaking pole 14 includes a breaking pole housing for accommodating the breaking pole operating mechanism and breaking pole contact system of the breaking pole 14. Further, the breaking pole housing includes a first half-shell and a second half-shell that engage with each other, forming a circuit breaker pole cavity for accommodating the circuit breaker pole. Further, the engagement direction of the first half-shell and the second half-shell is the same as the parallel direction of each breaking pole 14, and the parallel direction of each breaking pole 14 is parallel to the plane containing the bottom walls of the base 13 and the cover 15, that is, the engagement direction of the first half-shell and the second half-shell is perpendicular to the engagement direction of the base 13 and the cover 15.

[0042] In one embodiment, each circuit breaker pole is provided with a circuit breaker pole cavity formed by a first half-shell and a second half-shell. The first half-shell, the second half-shell, and the second half-shell of multiple circuit breaker poles are arranged in sequence to form multiple circuit breaker pole cavities.

[0043] In another embodiment, a circuit breaker partition is provided between adjacent circuit breaker poles 14 to separate adjacent circuit breaker poles 14 and ensure inter-pole insulation. Several circuit breaker partitions are arranged side by side at intervals to divide the housing mounting cavity into multiple circuit breaker pole cavities. The side-by-side direction of each circuit breaker partition is the same as the width direction of the multi-pole circuit breaker housing.

[0044] Specifically, such as Figures 1-2 As shown in Figures 5-6, the circuit breaker in this embodiment includes four parallel breaking poles 14, making it a 4P type multi-pole circuit breaker. Of course, the number of breaking poles 14 can be adjusted according to actual needs; for example, the number of breaking poles 14 can be two, three, or more.

[0045] like Figure 2 , 5As shown in Figure 6, the multi-pole circuit breaker includes a multi-pole circuit breaker linkage mechanism. The multi-pole circuit breaker includes a button 1, a first connecting rod 2, and circuit breaker operation mechanisms for each circuit breaker pole 14 arranged side by side. Each circuit breaker operation mechanism includes a rotatable handle 3, and each handle 3 is connected by a linkage shaft 4 to rotate synchronously. The length direction of the button 1 is the same as the side-by-side direction of each circuit breaker pole 14 (which is also the side-by-side direction of each circuit breaker operation mechanism) and is opposite to each circuit breaker pole 14 (the button 1 is also opposite to each circuit breaker operation mechanism). At least one handle 3 is drivenly connected to the button 1 through the first connecting rod 2. The button 1 can drive all circuit breaker poles 14 to close or open synchronously.

[0046] The multi-pole circuit breaker linkage mechanism has multiple circuit breaker operation mechanisms sharing a single button 1, which helps reduce the number of parts and simplify the structure. Each handle 3 is connected by a linkage shaft 4, and at least one handle 3 is connected to the button 1 via a first connecting rod 2, thus realizing the synchronous closing and opening of each circuit breaker pole 14.

[0047] like Figure 1 , 3 As shown in Figure 4, the base 13 includes a base guide structure 13-0, and the cover 15 includes a cover guide structure 15-1. The base guide structure 13-0 and the cover guide structure 15-1 cooperate with each other to form a button guide cavity for the button 1 to slide. Furthermore, the two sides of the button 1 are respectively slidably engaged with the base guide structure 13-0 and the cover guide structure 15-1.

[0048] Combination Figures 1-4 As shown, one end face of the multi-pole circuit breaker housing along its length is the housing operating surface. The housing operating surface is provided with a button mounting hole 15-0 for inserting the button 1, which communicates with the button guide cavity. Furthermore, there is one button mounting hole 15-0, which is located on the cover 15.

[0049] The circuit breaker operating mechanism can be implemented using existing technology. For example, the circuit breaker operating mechanism includes a handle 3, a second connecting rod, a locking element, a jumper element, and a rotating plate. The handle 3 and the rotating plate are rotatably mounted, and the locking element and the jumper element are rotatably mounted on the rotating plate and are engaged with a latch. The handle 3 is driven to be connected to the locking element through the second connecting rod, and the rotating plate is driven to be connected to the moving contact of the circuit breaker.

[0050] Each of the circuit breaker poles 14 includes a short-circuit protection mechanism and an overload protection mechanism. When a short circuit or overload fault occurs in the circuit where the circuit breaker pole 14 is located, the corresponding short-circuit protection mechanism or overload protection mechanism drives the trip fastener to rotate so that it releases the latching engagement with the locking fastener, thereby causing the circuit breaker pole operating mechanism to trip or open.

[0051] In the multi-pole circuit breaker, the two handle pieces 3 are respectively connected to the button 1 via the corresponding first link 2. That is, each of the two handle pieces 3 is connected to the button 1 via a first link 2. The two handle pieces 3 are located on both sides of the center position of the button 1 in the length direction. This simplifies the structure of the linkage mechanism of the multi-pole circuit breaker and ensures that when the button 1 is operated by external force, the button 1 can slide reliably and smoothly to drive each handle piece 3 to rotate synchronously.

[0052] In other embodiments, each of the handle components 3 is driven and connected to the button 1 through a corresponding first link 2. That is, each handle component 3 is driven and connected to the button 1 through a first link 2. The number of handle components 3 and first links 2 is the same. Although this can further improve the smoothness and reliability of the button 1's operation, it will complicate the structure of the multi-pole circuit breaker linkage mechanism.

[0053] like Figure 6 As shown, the first connecting rod 2 has a U-shaped structure, including a first connecting rod main body 2-0 and a first connecting rod front arm 2-1 and a first connecting rod rear arm 2-2, which are respectively bent and connected to both ends of the first connecting rod main body 2-0. The two arms are rotatably connected to the button 1 and the handle 3, respectively. Furthermore, the first connecting rod 2 is an integral structure formed by bending a metal rod.

[0054] like Figures 5-7 As shown, the button 1 includes a button body 1-0 and at least one button connecting part 1-2, which is rotatably connected to the first connecting rod 2. Furthermore, the button connecting part 1-2 is provided with a button connecting hole for engaging with the first connecting rod front arm 2-1 of the first connecting rod 2.

[0055] In the circuit breaker of this embodiment, the button 1 is preferably provided with multiple button connection parts 1-2, and the multiple button connection parts 1-2 are arranged side by side at intervals along the length direction of the button 1.

[0056] Specifically, such as Figures 5-7 As shown, the button 1 includes four button connection parts 1-2 arranged side by side at intervals. At least one of the four button connection parts 1-2 is driven to be connected to the corresponding handle part 3 through a first connecting rod 2. The number of button connection parts 1-2 can be increased or decreased as needed.

[0057] like Figures 5-6 As shown, the handle 3 and the linkage shaft 4 are coaxially arranged. Furthermore, the linkage shaft 4 is a polygonal prism, and the handle 3 is provided with a handle shaft hole that mates with the linkage shaft 4. The handle shaft hole matches the cross-sectional shape of the polygonal prism to enable the handle 3 and the linkage shaft 4 to rotate synchronously.

[0058] like Figures 1-2As shown in Figures 8-11, the multi-pole circuit breaker further includes an indicating mechanism and a locking mechanism respectively disposed inside the multi-pole circuit breaker housing; the indicating mechanism is used to indicate the opening and closing status of the circuit breaker and includes an indicating element 11 mounted on the base 13 and driven by the button 1; the locking mechanism includes a first locking state and a second locking state. In the first locking state, the locking protrusion 20-30 of the locking mechanism protrudes outside the multi-pole circuit breaker housing to engage with the circuit breaker mounting position limit to prevent the multi-pole circuit breaker from being pulled out or inserted into the circuit breaker mounting position. In the second locking state, the locking mechanism engages with the button 1 to prevent it from moving into the multi-pole circuit breaker housing to prevent the multi-pole circuit breaker from closing.

[0059] The term "circuit breaker mounting location" refers to structures such as distribution cabinets and distribution boxes used for installing circuit breakers.

[0060] like Figure 1 As shown, there is one indicating mechanism and one locking mechanism, both of which are disposed between the housing operating surface and each circuit breaker 14. Furthermore, both the indicating mechanism and the locking mechanism are located between the housing operating surface and the circuit breaker housing of each circuit breaker 14.

[0061] like Figures 8-9 As shown, the indicator 11 is rotatably disposed inside the housing of the multi-pole circuit breaker. When the button 1 is slid to the closed position, it simultaneously drives the indicator 11 to swing to the first indicator position. When the button 1 is slid to the open position, it simultaneously drives the indicator 11 to swing to the second indicator position. That is, when the button 1 slides back and forth between the closed and open positions, it drives the indicator 1 to swing back and forth to switch between the first and second indicator positions, thereby indicating the open and closed status of the multi-pole circuit breaker.

[0062] like Figure 2 As shown, the operating surface of the multi-pole circuit breaker housing is further provided with a locking mechanism operating hole 13-10 and an indicator hole 13-11, which respectively cooperate with the locking mechanism and the indicator mechanism. Furthermore, the locking mechanism operating hole 13-10 cooperates with the operating element 22 of the locking mechanism, and the indicator hole 13-11 cooperates with the indicator element 11 of the indicator mechanism. Furthermore, there is only one locking mechanism operating hole 13-10 and one indicator hole 13-11, both of which are located on the base 13.

[0063] like Figures 8-9As shown, the indicator 11 includes an indicator shaft 11-0, a first indicator arm 11-1, a second indicator arm 11-2, an indicator connecting part 11-3, and an indicator part 11-4. The indicator 11 is rotatably mounted on the multi-pole circuit breaker housing via the indicator shaft 11-0. The first indicator arm 11-1 and the second indicator arm 11-2 are respectively connected to the indicator shaft 11-0 and are distributed in a V-shape. The indicator part 11-4 is connected to the indicator shaft 11-0 via the indicator connecting part 11-3. The button 1 includes a button driving block 1-1, which is located between the first indicator arm 11-1 and the second indicator arm 11-2 and cooperates with them respectively, driving the indicator 11 to swing back and forth. Furthermore, the indicator part 11-4 and the indicator connecting part 11-3 are in an overall C-shape structure, with one end connected to the indicator shaft 11-0. The indicator connecting part 11-3, the first indicator arm 11-1 and the second indicator arm 11-2 are arranged sequentially at intervals along the circumference of the indicator shaft 11-0. The indicator part 11-4 is matched with the indicator hole 13-11 of the multi-pole circuit breaker housing.

[0064] Specifically, such as Figure 8 In the indicated direction, when button 1 slides to the right, that is, into the housing of the multi-pole circuit breaker, when the multi-pole circuit breaker is closed, button 1 and the second indicator arm 11-2 cooperate to drive indicator 11 to swing clockwise; when button 1 slides to the left, that is, out of the housing of the multi-pole circuit breaker, when the multi-pole circuit breaker is open, button 1 and the first indicator arm 11-1 cooperate to drive indicator 11 to swing counterclockwise.

[0065] The indicator section 11-4 is provided with color markings and / or text markings and / or symbol markings to indicate the opening and closing status of the multi-pole circuit breaker.

[0066] like Figure 1 and 3 As shown, the base 13 is provided with an indicator mounting cavity 13-5 connected by an indicator hole 13-11. The side wall of the indicator mounting cavity 13-5 is provided with an indicator shaft groove 13-1 for rotatably mounting the indicator 11 of the multi-pole circuit breaker. The two ends of the indicator shaft 11-0 of the indicator 11 are rotatably disposed within the two indicator shaft grooves 13-1 respectively. Furthermore, the indicator mounting cavity 13-5 is disposed within the base guide structure.

[0067] like Figure 7 As shown, this is an embodiment of the button 1: The button 1 includes a button body 1-0, a button driving block 1-1, and a button connecting part 1-2. The button body 1-0 is a rectangular plate structure. The button driving block 1-1 and the button connecting part 1-2 are respectively disposed at one end of the width direction of the button body 1 and are respectively located on both sides of the button body 1-0.

[0068] like Figure 2, 10 As shown in Figure -11, the locking mechanism includes a driving and cooperating operating member 22 and a locking member 20, as well as a support structure for supporting the operating member 22 and the locking member 20. The operating member 22 is actuated by external force to drive the locking member 20 to switch between a first locking position and a second locking position, that is, the locking mechanism switches between a first locking state and a second locking state. The user can operate the operating member 22 through the locking mechanism operating hole 13-10. The locking member 20 includes a locking part 20-3, which includes a locking boss 20-30 and a locking finger 20-31. When the locking member 20 is in the first locking position (that is, when the locking mechanism is in the first locking state), the locking boss 20-30 protrudes outside the circuit breaker housing. At this time, button 1... It can slide freely to drive the circuit breaker to close or open; when the circuit breaker is in the open state and the locking member 20 is in the second locking position (that is, when the locking mechanism is in the second locking state), the locking boss 20-30 moves into the circuit breaker housing (the "locking boss 20-30 moves into the circuit breaker housing" means that the locking boss 20-30 no longer protrudes from the outside of the circuit breaker housing, the locking boss 20-30 can either be completely inserted into the inside of the circuit breaker housing, or it can be flush with the outer side of the circuit breaker housing without protruding from the outside of the circuit breaker housing; in other words, the locking boss 20-30 moves into the inside of the circuit breaker housing so as not to protrude from the outside of the circuit breaker housing) and the locking finger 20-31 cooperates with the button 1 to limit and prevent it from sliding into the circuit breaker housing. In the first locked state, i.e., when the locking member 20 is in the first locked position, the locking boss 20-30 protrudes outside the circuit breaker housing. The locking boss 20-30 engages with the circuit breaker mounting position limit to prevent the circuit breaker from being pulled out or inserted into the circuit breaker mounting position. At this time, the button 1 can slide freely between the open and closed positions to drive the circuit breaker to close or open. When the circuit breaker is in the open state and the locking mechanism is in the second locked state, i.e., when the locking member 20 is in the second locked position, the locking boss 20-30 moves into the circuit breaker housing and the locking finger 20-31 engages with the button 1 limit to prevent it from sliding into the circuit breaker housing. That is, it prevents the button 1 from sliding from the open position to the closed position to close the circuit breaker, thereby avoiding the button 1 being accidentally closed during the process of inserting the circuit breaker into the circuit breaker mounting position. The locking mechanism significantly improves electrical safety.

[0069] like Figure 1 , 4 As shown, the cover 15 also includes a locking hole 15-2 provided on its bottom wall for the locking boss 20-30 to pass through and protrude outside the multi-pole circuit breaker housing.

[0070] like Figure 10As shown, the locking member 20 is driven by the operating member 22 to move and switch between a first locking position and a second locking position; the operating member 22 is rotatably mounted on the support structure at its center, and the operating member 22 swings between the first operating position and the second operating position to drive the locking member 20 to move. Furthermore, the locking member 20 is driven by the operating member 22 to translate.

[0071] In other embodiments, the locking member 20 is rotatably mounted on the support structure; and / or, the operating member 22 is slidably mounted on the support structure. It is sufficient that the locking mechanism, in the first locked state, causes the locking boss 20-30 to protrude out of the circuit breaker housing, and in the second locked state, causes the locking boss 20-30 to move into the circuit breaker housing, and the locking finger 20-31 engages with the button 1 in a limiting engagement.

[0072] like Figures 10-11 As shown, the operating member 22 is rotatably mounted on the support structure at its center, with one end being the operating part 22-3 and the other end engaging with the locking member 20. Furthermore, the operating part 22-3 engages with the locking mechanism operating hole 13-10 of the multi-pole circuit breaker housing.

[0073] like Figure 11 As shown, the support structure is an independently installed structure located between the operating surface of the housing and the circuit breaker housing. The support structure includes a support base 21 and a support cover 23, which are engaged to form a space for installing the operating component 22 and the locking component 20. The operating component 22 is rotatably disposed between the support base 21 and the support cover 23; the locking component 20 is slidably disposed between the support base 21 and the support cover 23. Further, as... Figure 1 and 3 As shown, the base guide structure of the base 13 is provided with a support structure receiving cavity for accommodating the support structure. The support structure receiving cavity is used to accommodate the locking mechanism. The support structure receiving cavity is connected to the locking mechanism operation hole 13-10 and is correspondingly provided with the locking hole 15-2.

[0074] In another embodiment, the support structure is formed by a multi-pole circuit breaker housing, that is, the operating member 22 is rotatably mounted on the multi-pole circuit breaker housing, and the locking member 20 is slidably mounted on the multi-pole circuit breaker housing.

[0075] like Figures 10-11 As shown, the locking member 20 further includes a locking member connecting part 20-2 connected to the locking part 20-3, and the support base 21 is provided with a locking member slide groove 21-0, in which the locking member connecting part 20-2 is slidably disposed. Furthermore, the locking part 20-3 is located outside the support structure.

[0076] like Figure 10 and11 As shown, the operating member 22 is hinged to the locking member 20. One of them has a hinge shaft 20-1, and the other has a hinge hole 22-2. The hinge shaft 20-1 is movably inserted into the hinge hole 22-2. The hinge hole 22-2 is an oblong hole, with a length greater than the outer diameter of the hinge shaft 20-1 and a width matching the outer diameter of the hinge shaft 20-1. Furthermore, one end of the locking member connecting part 20-2 is connected to the locking part 20-3, and the other end has the hinge shaft 20-1. The operating member 22 has the hinge hole 22-2. When the operating member 22 rotates to drive the locking member 20 to translate, the hinge shaft 20-1 rotates relative to the hinge hole 22-2 and moves relative to the hinge hole 22-2 simultaneously.

[0077] In other embodiments, the operating member 22 and the locking member 20 abut against each other, and when the operating member 22 rotates to the first operating position, it presses against the locking member 20 to make it translate to the first locking position; the locking mechanism also includes a locking member reset member, such as a locking member reset spring, to drive the locking member 20 to translate to the second locking position when the operating member 22 rotates to the second operating position to avoid the locking member 20.

[0078] like Figures 10-11 As shown, the operating member 22 also includes a locking structure 22-4. When the operating member 22 swings to the first operating position, the locking structure 22-4 engages with the support structure to limit the operation member 22 to the second operating position, thereby ensuring that the locking protrusion 20-30 of the locking member 20 is stably and reliably engaged with the circuit breaker assembly position. Furthermore, the locking structure 22-4 includes two locking feet 22-40 arranged side by side at intervals, each locking foot 22-40 having a locking foot protrusion 22-41 at its free end, with the two locking foot protrusions 22-41 located on both sides of the two locking feet 22-40; the supporting structure has a supporting groove 21-3, with a limiting protrusion on each side of the entrance end of the supporting groove 21-3, which respectively cooperates with the two locking foot protrusions 22-41; when the locking structure 22-4 is inserted into the supporting groove 21-3, the two locking foot protrusions 22-41 are pressed by the two limiting protrusions, causing the two locking feet 22-40 to elastically deform and move closer to each other; after the two locking foot protrusions 22-40 pass the two limiting protrusions, the two locking feet 22-40 reset, causing the two locking foot protrusions 22-41 to cooperate with the two limiting protrusions respectively, preventing the locking structure 22-4 from coming out of the supporting groove 21-3.

[0079] like Figures 10-11 As shown, the support base 21 is also provided with a support arc surface 21-2, and the operating part 22-3 of the operating member 22 slides along the support arc surface 21-2.

[0080] like Figures 10-11As shown, this is one embodiment of the locking member 20: The locking member 20 includes a hinge shaft 20-1, a locking member connecting part 20-2, and a locking part 20-3. One end of the locking member connecting part 20-2 is connected to the locking part 20-3, and the other end is provided with the hinge shaft 20-1. The locking part 20-3 has an overall L-shaped structure. The locking part 20-3 includes a locking finger 20-31 and a locking boss 20-30. One end of the locking finger 20-31 is connected to the locking boss 20-30 and the locking member connecting part 20-2 respectively, and the locking boss 20-30 and the locking member connecting part 20-2 are located on both sides of the locking finger 20-31. The other end of the locking finger 20-31 cooperates with the button 1.

[0081] like Figures 10-11 As shown, one embodiment of the operating component 22 is illustrated: the operating component 22 includes an operating component mounting portion, an operating component connecting portion, and an operating portion 22-3. The operating component mounting portion has an operating component shaft hole 22-1, and the operating component connecting portion has a hinge hole 22-2. The operating portion 22-3 and the operating component connecting portion are respectively located at both ends of the operating component 22. The operating component mounting portion is located in the middle of the operating component 22, and the operating component locking structure 22-4 is located between the operating component mounting portion and the operating portion 22-3. Furthermore, the operating portion 22-3 is an arc-shaped plate structure, and its operating side has multiple protruding ribs to facilitate operation.

[0082] like Figure 1 As shown, the multi-pole circuit breaker in this embodiment also includes an indicator light 12. Furthermore, the operating surface of the multi-pole circuit breaker housing is also provided with an indicator light window 13-12, which cooperates with the indicator light 12. Furthermore, there is only one indicator light window 13-12, which is disposed on the base 13.

[0083] like Figure 1 As shown, each circuit breaker pole 14 includes a first terminal, and the operating surface of the housing is also provided with a first wiring hole 13-4 that mates with the first terminal. The operating surface of the housing has multiple first wiring holes 13-4, each corresponding to one of the multiple circuit breaker poles 14. The multi-pole circuit breaker housing also includes a button spacer 13-2, which is positioned between the first wiring hole 13-4 and the button mounting hole 15-0 to prevent the button 1 from being affected by the wire at the first wiring hole 13-4 during opening and closing, ensuring smooth sliding of the button 1 and reliable opening and closing of the multi-pole circuit breaker. One button mounting hole 15-0 corresponds to multiple first wiring holes 13-4, and the multiple first wiring holes 13-4 are arranged side-by-side sequentially along the length of the button mounting hole 15-0. The button spacer 13-2 also corresponds to multiple first wiring holes 13-4.

[0084] The first terminal is preferably the outgoing terminal of a multi-pole circuit breaker. The multi-pole circuit breaker also includes a second terminal, which is the incoming terminal of the multi-pole circuit breaker. The first terminal and the second terminal are located at opposite ends of the length of the multi-pole circuit breaker housing. Furthermore, each of the circuit breaking poles 14 includes a first terminal and a second terminal.

[0085] like Figure 1 As shown, the first terminal protrudes from the circuit breaker housing. Several spaced-apart terminal baffles are provided inside the multi-pole circuit breaker housing near the operating surface, forming multiple first wiring slots to accommodate the first terminal. Each of the multiple first wiring slots corresponds one-to-one with a multiple first wiring hole 13-4, and the first terminal is installed within the first wiring slot. In this embodiment, the terminal baffles are located on the bottom wall of the base 13. Preferably, the multiple terminal baffles form a base guide structure for the base 13, and the button 1 slides on the base guide structure. The indicator mounting cavity 13-5 is located on one terminal baffle, and the support structure receiving cavity is located on another terminal baffle. Of course, the indicator mounting cavity 13-5 and the support structure receiving cavity can also be located on the same terminal baffle, but the structure is relatively complex.

[0086] like Figures 3-4 As shown, the base 13 includes a base connecting post 13-3, and the cover 15 includes a cover connecting post 15-3 that mates with the base connecting post 13-3. Further, one end of the base connecting post 13-3 is connected to the bottom wall of the base 13, and the other end mates with the cover connecting post 15-3; one end of the cover connecting post 15-3 is connected to the bottom wall of the cover 15, and the other end mates with the base connecting post 13-3.

[0087] like Figure 1 , 3 As shown in Figure -4, the multi-pole circuit breaker housing has housing limiting ribs on two side walls perpendicular to the parallel direction of the multiple breaking poles 14, thereby ensuring reliable installation of the breaking poles 14 within the multi-pole circuit breaker housing. The two side walls of the multi-pole circuit breaker housing perpendicular to the parallel direction of the multiple breaking poles 14 also have a first guide structure, and the breaking pole housing has a second guide structure. The second guide structure slides and positions with the first guide structure, allowing the breaking pole housing to slide into the multi-pole circuit breaker housing. The first guide structure is a raised rib structure, and the second guide structure is a groove structure, or the first guide structure is a groove structure, and the second guide structure is a raised rib structure. For example... Figure 1 The interrupted circuit breaker housing has three grooves as a second guide structure, and three ribs on the base 13 and cover 15 as a first guide structure, facilitating assembly and positioning. The multi-pole circuit breaker housing has the following technical advantages:

[0088] 1. The operating surface of the housing is provided with a button mounting hole 15-0, a locking mechanism operating hole 13-10, an indicator hole 13-11, and an indicator light window 13-12, thereby significantly improving the convenience and safety of customers operating and observing the circuit breaker.

[0089] 2. The button spacer 13-2 is set between the button mounting hole 15-0 and the first wiring hole 13-4 to prevent the circuit breaker from being affected by the wires when the button 1 slides.

[0090] 3. The base 13 and the cover 15 are connected together by the cooperation of the base connecting column 13-3 and the cover connecting column 15-3, which is convenient to connect and simple to operate.

[0091] The number of breaking poles 14 in the multi-pole circuit breaker can be adjusted according to actual needs. Each breaking pole 14 shares a button 1 for linkage. The breaking poles 14 and button 1 are installed in the same multi-pole circuit breaker housing, realizing modular design and assembly. Therefore, the multi-pole circuit breaker is also a modular multi-pole circuit breaker. In addition, the indicating mechanism and locking mechanism are set as common modules of the multi-pole circuit breaker in the multi-pole circuit breaker housing, shared by all breaking poles 14, realizing the synchronization of opening and closing indication and locking operation. Moreover, increasing or decreasing the number of breaking poles 14 will not affect the normal operation of the indicating mechanism and locking mechanism.

[0092] It should be noted that in the description of this invention, 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 conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0093] 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 scope of protection of the present invention.

Claims

1. A circuit breaker, comprising a circuit breaker housing, a button (1) slidably inserted at one end of the circuit breaker housing, and a breaking pole (14) disposed within the circuit breaker housing, wherein the breaking pole (14) comprises a breaking pole operating mechanism, and the button (1) is drivenly connected to the breaking pole operating mechanism. Its features are: The circuit breaker also includes a locking mechanism disposed within the circuit breaker housing. The locking mechanism includes a drive-cooperating operating member (22) and a locking member (20), as well as a support structure for supporting the operating member (22) and the locking member (20). The circuit breaker housing is provided with a locking mechanism operating hole (13-10). The operating member (22) includes an operating part (22-3), which is engaged with the locking mechanism operating hole (13-10). The operating part (22-3) is used for user operation to drive the operating member (22) to move. The operating member (22) is actuated by external force to drive the locking mechanism. The locking component (20) switches between a first locking position and a second locking position. The locking component (20) includes a locking part (20-3), which includes a locking boss (20-30) and a locking finger (20-31). When the locking component (20) is in the first locking position, the locking boss (20-30) protrudes outside the circuit breaker housing. When the circuit breaker is in the open state and the locking component (20) is in the second locking position, the locking boss (20-30) moves into the circuit breaker housing and the locking finger (20-31) is limited by the button (1) to prevent it from sliding into the circuit breaker housing.

2. The circuit breaker according to claim 1, characterized in that: The locking member (20) is driven by the operating member (22) to move to switch between a first locking position and a second locking position; The operating member (22) is rotatably mounted on the support structure in the middle, and the operating member (22) swings between the first action position and the second action position to drive the locking member (20) to move.

3. The circuit breaker according to claim 2, characterized in that: The operating component (22) also includes a locking structure (22-4). When the operating component (22) swings to the first action position, the locking structure (22-4) cooperates with the support structure to limit the operation and prevent the operating component (22) from swinging to the second action position.

4. The circuit breaker according to claim 3, characterized in that: The locking structure (22-4) includes two locking feet (22-40) arranged side by side at intervals. Each locking foot (22-40) has a locking foot protrusion (22-41) at its free end. The two locking foot protrusions (22-41) are located on both sides of the two locking feet (22-40). The support structure is provided with a support groove (21-3). Each side of the entrance end of the support groove (21-3) is provided with a limiting protrusion, which respectively cooperates with the two locking foot protrusions (22-41).

5. The circuit breaker according to claim 2, characterized in that: The operating component (22) is rotatably mounted on the support structure, with one end being the operating part (22-3) and the other end being driven to cooperate with the locking component (20).

6. The circuit breaker according to claim 5, characterized in that: The support structure includes a support base (21) and a support cover (23), which are engaged to form a space for installing an operating element (22) and a locking element (20); the operating element (22) is rotatably disposed between the support base (21) and the support cover (23); and the locking element (20) is slidably disposed between the support base (21) and the support cover (23).

7. The circuit breaker according to claim 5, characterized in that: The operating member (22) is hinged to the locking member (20). One of the operating member (22) and the locking member (20) is provided with a hinge shaft (20-1) and the other is provided with a hinge hole (22-2). The hinge shaft (20-1) is movably inserted into the hinge hole (22-2). The hinge hole (22-2) is an oblong hole. The length of the hinge hole (22-2) is greater than the outer diameter of the hinge shaft (20-1) and the width of the hinge hole (22-2) matches the outer diameter of the hinge shaft (20-1).

8. The circuit breaker according to claim 6, characterized in that: The locking member (20) also includes a locking member connecting part (20-2) connected to the locking part (20-3), and the support base (21) is provided with a locking member groove (21-0), and the locking member connecting part (20-2) is slidably disposed in the locking member groove (21-0).

9. The circuit breaker according to claim 6, characterized in that: The support base (21) is also provided with a support arc surface (21-2), and the operating part (22-3) of the operating member (22) slides along the support arc surface (21-2).

10. The circuit breaker according to claim 8, characterized in that: One end of the locking member connecting part (20-2) is connected to the locking part (20-3), and the other end is provided with a hinge shaft (20-1); the locking part (20-3) is generally L-shaped, one end of the locking finger (20-31) is connected to the locking boss (20-30) and the locking member connecting part (20-2) respectively, and the locking boss (20-30) and the locking member connecting part (20-2) are located on both sides of the locking finger (20-31), and the other end of the locking finger (20-31) is engaged with the button (1).

11. The circuit breaker according to claim 7, characterized in that: The operating component (22) also includes an operating component mounting part and an operating component connecting part. The operating component mounting part is provided with an operating component shaft hole (22-1), and the operating component connecting part is provided with a hinge hole (22-2). The operating part (22-3) and the operating part connecting part are respectively located at both ends of the operating component (22). The operating component mounting part is located in the middle of the operating component (22), and the operating component locking structure (22-4) is located between the operating component mounting part and the operating part (22-3).

12. The circuit breaker according to claim 1, characterized in that: The circuit breaker includes multiple circuit breaking poles (14) arranged side by side. Each circuit breaking pole (14) includes a rotatable handle (3). Each handle (3) is connected by a linkage shaft (4) to rotate synchronously. At least one handle (3) is connected to a button (1) via a first connecting rod (2).

Images