A structurally compact intelligent circuit breaker

Abstract

The present application discloses a structurally compact intelligent circuit breaker, which includes a base, a cover body, an upper cover, an operating mechanism, a test button, and a control component; the cover body is fixed on the base, and the upper cover is fixed on the cover body; the cover body includes a partition wall and a side wall surrounding the periphery of the partition wall, and the side wall, the partition wall, and the upper cover form an accommodation space; the traction rod of the operating mechanism is located below the partition wall, a driving part is arranged on the traction rod, and a first through hole corresponding to the driving part is formed on the partition wall; wherein, a DC motor, a gearbox, and an output slider are further included in the accommodation space, the DC motor is connected to the input end of the gearbox, the output end of the gearbox is connected to the output slider, one end of the handle of the operating mechanism penetrates the partition wall and is connected to the output slider, after the torque output by the DC motor is changed by the gearbox, the opening and closing operations of the operating mechanism are realized through the sliding of the output slider; the control component includes a human-machine interaction circuit board, and the human-machine interaction circuit board is located above the first through hole; the orthographic projection of the human-machine interaction circuit board on the partition wall intersects with the first through hole or includes the first through hole therein; the test button is located beside the human-machine interaction circuit board, one end of the test button is matched with the driving part through the first through hole, and the other end of the test button is exposed on the upper cover; the present application has the characteristic of being more structurally compact.

Description

Technical Field

[0001] The present application relates to the field of low-voltage switch electrical appliances, and specifically to a compact intelligent circuit breaker. Background Art

[0002] With the rise of the concept of Internet of Everything, the field of low-voltage electrical appliances has also been affected. For example, the integrated circuit breaker demanded in the market is one of them.

[0003] This kind of integrated circuit breaker has gradually evolved from the initial integrated ordinary molded case circuit breaker to the integrated reclosing circuit breaker. In the existing integrated reclosing circuit breaker, such as the structure disclosed in CN216389242U, components such as an operating mechanism, a motor, a control circuit board, a power line carrier module, an electric gear, and a connecting rod are provided on the circuit breaker body.

[0004] For this kind of integrated circuit breaker of the reclosing type, an AC motor is used for the motor. Because the rotational speed of the AC motor is relatively low, the forward and reverse rotation of the AC motor can directly drive the connecting rod to pull the operating handle for opening and closing. Just because the structure of the AC motor is relatively small, there is a lot of space left above the circuit breaker body. Components such as a trip button (also called a compact intelligent circuit breaker, which can cause the operating mechanism in the closed state to trip when pressed by the user) can be set relatively arbitrarily.

[0005] However, with the further improvement of the requirements for the electric opening and closing speed of the circuit breaker, the rotational speed of the AC motor is difficult to meet this faster opening and closing speed. The rotational speed of the DC motor is very fast and is the only choice. However, because the rotational speed is too fast, it cannot directly drive the operating handle for opening and closing. It must be decelerated to a certain speed by a reduction gear set before it can drive the operating handle. However, no matter how streamlined the existing gear reduction structure is, it is still relatively large. Taking CN216389242U as an example, if a DC motor is used for driving, the gearbox (reduction gear set) needs to completely occupy the space L1 on the left side of the control circuit board and the power line carrier module, as shown in Figure 21 shown. If this method is adopted, the existing structure of the trip button cannot be set, and without setting the trip button, the circuit breaker will not meet the specifications.

[0006] Therefore, how to rearrange a circuit breaker with a more reasonable structure that can ensure the normal use of a compact intelligent circuit breaker (trip button) is a direction worthy of research. Summary of the Invention

[0007] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and aims to provide a compact intelligent circuit breaker.

[0008] The present application provides: a compact intelligent circuit breaker, which includes a base, a cover body, an upper cover, an operating mechanism, a test button, and a control component; the cover body is fixed on the base, and the upper cover is fixed on the cover body; the cover body includes a partition wall and a side wall surrounding the periphery of the partition wall, and the side wall, the partition wall, and the upper cover form an accommodation space; the traction rod of the operating mechanism is located below the partition wall, a driving part is arranged on the traction rod, and a first through hole corresponding to the driving part is opened on the partition wall; wherein, a DC motor, a gearbox, and an output slider are further included in the accommodation space, the DC motor is connected to the input end of the gearbox, the output end of the gearbox is connected to the output slider, one end of the handle of the operating mechanism penetrates through the partition wall and is connected to the output slider, after the torque output by the DC motor is changed by the gearbox, the opening and closing operations of the operating mechanism are realized through the sliding of the output slider; the control component includes a human-machine interaction circuit board, and the human-machine interaction circuit board is located above the first through hole; the orthographic projection of the human-machine interaction circuit board on the partition wall intersects with the first through hole or includes the first through hole therein; the test button is located beside the human-machine interaction circuit board, one end of the test button cooperates with the driving part through the first through hole, and the other end of the test button is exposed on the upper cover.

[0009] Adopting such a structure has the following effects: First, placing the test button beside the human-machine interaction circuit board makes the components that the user can operate more concentrated, which is beneficial for the user's centralized operation. Second, the gearbox structure is relatively large, and a large operating space is required between the internal gears, and it is not easy to set the hole for the test button. It is easier to design by setting the test button beside the human-machine interaction circuit board.

[0010] In some embodiments of the present application, a display device is arranged on the human-machine interaction circuit board, the first through hole is located below the display device, and the orthographic projection of the display device on the partition wall intersects with the first through hole or includes the first through hole therein; the test button includes a first rod portion and a second rod portion, the first rod portion is located below the display device and cooperates with the first through hole, and the second rod portion is located on one side of the display device for being exposed on the upper cover; the first rod portion and the second rod portion are connected and form an avoidance space, and a part of the display device is located in the avoidance space.

[0011] Adopting such a structure, for a circuit breaker in a small space, the display device in the human-machine interaction interface is a complete component and covers the first through hole. By setting a test button with an avoidance space, the display device can be avoided by using the avoidance space, so that it neither affects the assembly of these components nor affects the function of the test button; at the same time, the overall structure is made more compact.

[0012] In some embodiments of the present application, the test button further includes a connecting portion. The first rod portion and the second rod portion are connected through the connecting portion, and the avoidance space is formed by the second rod portion and the connecting portion. There is also a limiting structure in the accommodation space. The limiting structure is a limiting protrusion and / or a limiting groove, and a part of the test button is arranged in the limiting protrusion and / or the limiting groove.

[0013] With this structure, the test button is limited by the provided limiting protrusion and / or limiting groove, ensuring that the installed test button is stably located in the accommodation space, facilitating the installation of other components.

[0014] In some embodiments of the present application, during the sliding process of the test button, a part of the test button slides along the limiting protrusion and / or the limiting groove, and the limiting protrusion and / or the limiting groove are also used to guide the sliding of the test button.

[0015] With this structure, the test button can slide along the limiting protrusion and / or the limiting groove, which is beneficial to the sliding of the test button and makes its sliding more stable. This effect is particularly obvious in circuit breakers with relatively long test buttons.

[0016] In some embodiments of the present application, the gearbox includes a first bracket and a second bracket. The first bracket is fixed on the second bracket, and a gear installation space is formed between them. At least two levels of double gears and an output gear are arranged in the gear installation space. The first-level double gear is the input end of the gearbox, and the remaining levels of double gears are meshed in sequence. The last-level double gear is meshed with the output gear. An eccentric wheel is connected to the output gear. A crank-slider mechanism is formed between the eccentric wheel and the output slider. Through the continuous output of a unidirectional DC motor, the eccentric wheel acts on the output slider to make it reciprocate, realizing the opening and closing operations of the operating mechanism.

[0017] With this structure, the double gears achieve speed reduction, and then a crank-slider mechanism is formed between the eccentric wheel and the output slider to realize the opening and closing operations of the operating mechanism, featuring a stable and simple transmission structure.

[0018] In some embodiments of the present application, the pitch diameter of the output gear is greater than the pitch diameter of any level of double gear.

[0019] With this structure of multi-level double gears and the pitch diameter of the output gear being greater than the pitch diameter of any double gear, the transmission ratio can be effectively guaranteed, the response is rapid, and rapid opening and closing can be achieved.

[0020] In some embodiments of the present application, each level of double gear satisfies that the pitch diameter of the large tooth part of the next-level double gear is greater than the pitch diameter of the previous-level double gear.

[0021] Adopting such a structure of multi-pole double gears, and the pitch circle diameter of the large gear part of the next-stage double gear being greater than that of the previous-stage double gear, can effectively ensure the transmission ratio, respond quickly, and achieve rapid opening and closing.

[0022] In some embodiments of the present application, an avoidance area is further provided on the first bracket, and a part of the human-machine interaction circuit board extends into the area.

[0023] The setting of the avoidance area makes the structure between the human-machine interaction circuit board and the gearbox more compact, which can make the product more miniaturized.

[0024] In some embodiments of the present application, an indicating hole is further opened on the upper cover. The output slider has an indicating part extending below the indicating hole. The indicating part has marks corresponding to the opening state and the closing state. By sliding the output slider to different positions, different marks are presented in the indicating hole.

[0025] Adopting such a structure ensures that the circuit breaker has a mechanical indication. At the same time, this mechanical indication is directly realized through the movement of the output slider, and the indication is more intuitive. In the prior art, for the mechanical indication, an opening needs to be made in the partition wall, and then the indicator is associated with the lower rotating shaft. However, for the indicating structure driven by such an output slider, no opening is required, which is more suitable for the circuit breaker in the form of a gearbox.

[0026] In some embodiments of the present application, an input shaft is further included. The eccentric wheel is fixed at one end of the input shaft. A handle insertion hole is opened at the other end of the input shaft, and an exposed hole corresponding to the handle insertion hole is opened on the upper cover; the output gear is connected to the input shaft through a clutch structure, and the clutch structure means that when the input shaft rotates in the first direction, it disengages from the cooperation with the output end, while when the output gear rotates in the first direction, it is in transmission connection with the input shaft.

[0027] Adopting such a structure can realize both manual opening and closing and electric opening and closing. When performing manual opening and closing, by using the clutch structure, when rotating manually (when the input shaft rotates in the first direction itself), it disengages from components such as the motor, avoiding the situation that the manual operation is laborious due to components such as the motor rotor.

[0028] In some embodiments of the present application, an external handle is further included. The external handle is used to cooperate with the handle insertion hole to realize the manual opening and closing operation of the operating mechanism; the cover body is formed with a first cavity, and the upper cover is formed with a second cavity. The first cavity and the second cavity together form a storage groove, and the external handle is placed in the storage groove.

[0029] Adopting such a structure, where the first cavity and the second cavity are respectively formed on the upper cover and the cover body, and the two together form a storage groove, which is beneficial to the processing of the product. At the same time, the remaining space of the upper cover and the cover body can be utilized as much as possible to complete the installation of the external handle.

[0030] In some embodiments of the present application, a sliding plate and a changeover switch are further provided in the upper cover. The sliding plate is slidably disposed above the first bracket, and a part of the sliding plate is exposed outside the upper cover for the user to operate. The sliding plate has a first position that blocks between the exposed hole and the handle jack, and a second position that connects the exposed hole and the handle jack. The changeover switch is disposed within the movement track of the sliding plate. When the sliding plate is in the second position, the changeover switch is triggered, and after being triggered, the changeover switch feeds back a signal to the control assembly.

[0031] Adopting such a structure, by using the sliding plate and the changeover switch, the interlock between manual operation and electric operation can be achieved.

[0032] In some embodiments of the present application, a sliding plate is further provided in the upper cover. A chute is provided on the first bracket, and a slide rail is provided on the sliding plate. The slide rail and the chute form a sliding fit. A part of the sliding plate is exposed outside the upper cover for the user to operate. The sliding plate has a first position that blocks between the exposed hole and the handle jack, and a second position that connects the exposed hole and the handle jack.

[0033] Adopting such a structure, the sliding plate is slidably disposed on the first bracket, so that the sliding plate can be installed on the first bracket in advance and then placed into the cover body, which is beneficial to the modular installation of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 Shows a perspective view of an intelligent circuit breaker according to Embodiment 1 of the present application;

[0036] Figure 2 Shows a schematic diagram of an intelligent circuit breaker according to Embodiment 1 of the present application after removing the upper cover and the external handle;

[0037] Figure 3 Shows a top view of an intelligent circuit breaker according to Embodiment 1 of the present application after removing the upper cover and the external handle;

[0038] Figure 4 Shows a schematic structural diagram of the upper cover of an intelligent circuit breaker according to Embodiment 1 of the present application;

[0039] Figure 5 Shows the schematic structural diagram of the test button in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0040] Figure 6 Shows the cross-sectional view of the mating part between the test button and the traction rod in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0041] Figure 7 Shows the top view of the test button and the display device in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0042] Figure 8 Shows the axonometric view and the partial enlarged view of one embodiment of the test button and the cover in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0043] Figure 9 Shows the axonometric view and the partial enlarged view of another embodiment of the test button and the cover in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0044] Figure 10 Shows the schematic structural diagram after removing components such as the motor in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0045] Figure 11 Shows the schematic structural diagram of the cooperation between the motor and the gearbox in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0046] Figure 12 Shows the exploded view of the cooperation of components such as the motor and the gearbox in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0047] Figure 13 Shows the structural diagram of the drive board in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0048] Figure 14 Shows the positional relationship diagram of the output slider and the eccentric wheel when the intelligent circuit breaker according to Embodiment 1 of the present application is in the closed state;

[0049] Figure 15 Shows the positional relationship diagram of the output slider and the eccentric wheel when the intelligent circuit breaker according to Embodiment 1 of the present application is in the open state;

[0050] Figure 16 Shows the schematic structural diagram of the output gear and the input shaft in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0051] Figure 17 Shows the schematic diagram of the clutch structure between the output gear and the input shaft in the intelligent circuit breaker according to Embodiment 1 of the present application;

[0052] Figure 18 Fig. 1 shows a schematic diagram of the slide plate in the first position in an intelligent circuit breaker according to Embodiment 1 of the present application;

[0053] Figure 19 Fig. 2 shows a schematic diagram of the slide plate in the second position in an intelligent circuit breaker according to Embodiment 1 of the present application;

[0054] Figure 20 Fig. 3 shows a schematic diagram of the structure of the external handle in an intelligent circuit breaker according to Embodiment 1 of the present application;

[0055] Figure 21 Fig. 4 shows a schematic diagram of the prior art structure. Detailed implementation manners

[0056] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0057] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0058] In addition, the terms "primary" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "primary" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0059] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In this application, unless otherwise clearly defined and limited, the main feature being "on" or "under" the second feature can be that the main and the second features are in direct contact, or the main and the second features are in indirect contact through an intermediate medium. Moreover, the main feature being "above", "over" and "on top of" the second feature can be that the main feature is directly above or obliquely above the second feature, or merely indicates that the main feature has a higher horizontal height than the second feature. The main feature being "under", "beneath" and "underneath" the second feature can be that the main feature is directly below or obliquely below the second feature, or merely indicates that the main feature has a lower horizontal height than the second feature. Embodiment

[0061] As Figures 1 - 20 As shown, Embodiment 1 of this application provides an intelligent circuit breaker. This reclosing circuit breaker refers to a circuit breaker with an electric operating mechanism, which can realize the opening and closing of the circuit breaker manually or by using the electric operating mechanism.

[0062] This intelligent circuit breaker includes a circuit breaker housing, a gear box 6000, a DC motor 6001, an external handle 7000, a control component 400, a carrier communication module 8000, an operating mechanism, a contact component, an arc extinguishing component, a test button 5000, etc.

[0063] The circuit breaker housing includes a base 1001, a cover body 1002 and an upper cover 1003. Here, the base 1001 is arranged below the cover body 1002, and the base 1001 and the cover body 1002 are fastened by bolts. The upper cover 1003 is arranged above the cover body 1002, and the upper cover 1003 and the cover body 1002 are also fastened by bolts. Of course, in addition, it is also possible to fasten all three with bolts, or other fastening methods. Whichever method is used, as long as the structures of the three can be ensured to be stable.

[0064] Here, the cover body 1002 includes a partition wall 1002a and a side wall 1002b surrounding the periphery of the partition wall 1002a. Because of this, after the cover body 1002 is well - fitted with the upper cover 1003, the upper cover 1003, the side wall 1002b, and the partition wall 1002a together form a receiving space K, and the receiving space K is located above the partition wall 1002a. The partition wall 1002a here is not specifically a flat wall, nor a completely closed wall. The main function of the partition wall 1002a here is to separate the receiving space K from the high - voltage components in the base 1001 as much as possible. However, there are still some reserved holes on the partition wall 1002a for wiring or for some components to pass through, etc.

[0065] The operating mechanism is fixed on the base 1001. Most of the components of the operating mechanism are arranged below the cover body 1002, that is, below the partition wall 1002a. Only the handle of the operating mechanism passes through the partition wall 1002a and extends into the receiving space K. For example, components such as the frame, lever, and traction rod 2001 are located below the partition wall 1002a. There is enough space reserved on the partition wall 1002a here for the handle 9001 to move. By controlling the movement of the handle 9001, the opening operation and closing operation of the circuit breaker can be realized. A first through - hole 1002a0 is formed on the partition wall 1002a, and the driving part 2001a on the traction rod 2001 is located directly below the first through - hole 1002a0. The driving part 2001a here is used to complete the test function. The so - called test function means that when the circuit breaker is in the closed state, the user presses the test button 5000, which can drive the driving part 2001a (traction rod 2001) to rotate, so that the operating mechanism executes the opening operation.

[0066] The control component 400 is located in the receiving space K and is arranged close to a long side wall 1002b1 (the left - hand long side wall 1002b1). In this way, there will be an installation area between the control component 400 and the other long side wall 1002b1, and the gearbox 6000 is arranged in the installation area.

[0067] The control component 400 is composed of multiple circuit boards, and one of them is the human-machine interaction circuit board 402. The human-machine interaction circuit board 402 includes a display device 4000, buttons, etc. There is a human-machine interaction interface 4000a on the upper cover 1003. The human-machine interaction interface 4000a corresponds to the human-machine interaction circuit board 402. Users can understand the parameter information of the circuit breaker and set parameters through these components. The carrier slot 10036 of the upper cover 1003 is opened above the human-machine interaction interface 4000a. The carrier communication module 8000 is plugged into the carrier slot 10036. Here, the carrier slot 10036 is located above the control component 400. The carrier communication module 8000 can be electrically connected to the control component 400 through the interface on the control component 400. Of course, the control component 400 not only has these functions. It also includes a power circuit module, a module for realizing protection functions, a module for realizing communication functions, a start-stop control module for a DC motor, and so on. Here, the protection functions include, for example, short-circuit protection, overload protection, leakage protection, phase loss protection, over-temperature protection, over-voltage and under-voltage protection, etc.

[0068] The test button 5000 includes a first rod portion 5001, a second rod portion 5003, and a connecting portion 5002. Here, the first rod portion 5001 and the second rod portion 5003 are respectively connected to both sides of the connecting portion 5002. The first rod portion 5001 extends downward, and the second rod portion 5003 extends upward. At the same time, at the connection position between the first rod portion 5001 and the connecting portion 5002, and at the connection position between the second rod portion 5003 and the connecting portion 5002, these two positions are offset from each other. In this way, the shape of the test button 5000 is approximately in the shape of "ㄣ". Such a structure can form an avoidance space 5004 directly above the first rod portion 5001. Here, the avoidance space 5004 is formed by the second rod portion 5003 and the connecting portion 5002 together. Of course, the first rod portion 5001, the second rod portion 5003, and the connecting portion 5002 are integrally formed components. In addition to using integrally formed components, the first rod portion 5001 and the connecting portion 5002 or the second rod portion 5003 and the connecting portion 5002 can also be fixed by welding, fastened by screws, interference fit, snap fit, etc. The cross-sectional shape of the connecting portion 5002 can be a regular figure or an irregular figure.

[0069] Since the first through hole 1002a0 on the partition wall 1002a is located below the display device 4000. Of course, the "below" here does not mean that the two are adjacent to each other, but refers to the relationship between the two in terms of orientation, that is, there can be other components between the two, such as other parts of the circuit board. Exactly because the display device 4000 is a complete component and cannot have holes opened on it, and it is impossible to use a conventional columnar test button, the test button 5000 with the above-mentioned avoidance space is adopted. The first rod portion 5001 is inserted into the first through hole 1002a0, and the upper end of the second rod portion 5003 is exposed from the second through hole 1003a on the upper cover 1003, and the display device 4000 is partially located in the avoidance space 5004. Such a structure can make the test button 5000 avoid the display device 4000 as much as possible, making the structure more compact.

[0070] Of course, a test spring will be provided between the first rod portion 5001 and the first through hole 1002a0 here to reset the test button 5000.

[0071] There is also a limiting structure inside the accommodation space K. The limiting structure mainly adopts limiting protrusions and / or limiting grooves, which can play a role in limiting the installation of the test button 5000. The following are several different limiting structures for example.

[0072] As Figure 9 shown, in this way, the limiting structure is the first limiting protrusion 1004a extending upward from the partition wall 1002a, that is, in the direction of the upper cover 1003. Here, the first limiting protrusion 1004a surrounds the connecting portion 5002, and the connecting portion 5002 is limited by the first limiting protrusion 1004a from the periphery of the connecting portion 5002.

[0073] As Figure 8 shown, in this embodiment, the test button 5000 is arranged close to the long side wall 1002b1, and a first groove 1004b is opened on the long side wall 1002b1. In this way, one side of the connecting portion 5002 and the second rod portion 5003 can be located in the first groove 1004b, and the connecting portion 5002 and the second rod portion 5003 can be limited by the first groove 1004b. Of course, in this way, a second limiting protrusion 1004c can also be arranged near the first groove 1004b to further improve the limiting effect.

[0074] In addition to the limiting effect, the above-mentioned limiting structures can also play a guiding effect, that is, during the sliding process of the test button 5000, the connecting portion 5002 and / or the second rod portion 5003 always slide along the limiting structure.

[0075] The DC motor 6001 belongs to a type of DC motor with only one working direction.

[0076] The gearbox 6000 includes a first bracket 6000a and a second bracket 6000b. The first bracket 6000a is fixed on the second bracket 6000b, and a gear installation space 6000c is formed between them.

[0077] The first bracket 6000a has an avoidance area 6000a0, and the human-machine interaction circuit board 402 can partially extend into the avoidance area 6000a0.

[0078] There are two guide rails 6004 arranged below the second bracket 6000b. Here, the guide rails 6004 are fixed to the second bracket 6000b. The two ends of the output slider 6003 are sleeved on the guide rails 6004, so that the output slider 6003 can slide along the guide rails 6004.

[0079] There are at least two stages of double gears and an output gear 6007 (i.e., the output end of the reduction gear set) arranged in the gear installation space 6000c. Here, it is a three-stage double gear. The large tooth part of the first-stage double gear 6005 meshes with the input part of the DC motor 6001. Then, the meshing relationship between each stage of double gears satisfies that the small tooth part of the upper-stage double gear meshes with the large tooth part of the lower-stage double gear. The small tooth part of the third-stage double gear 6006 meshes with the output gear 6007, and the output gear 6007 is in transmission connection with the eccentric wheel 6002. Thus, the output of the DC motor 6001 can be decelerated and transformed into an appropriate output torque to realize the opening and closing of the circuit breaker. Here, the pitch circle diameter of the output gear 6007 is larger than the pitch circle diameter of any double gear (i.e., the pitch circle diameter of the large tooth part of any double gear). Each stage of double gears also satisfies that the pitch circle diameter of the large tooth part of the lower-stage double gear is larger than the pitch circle diameter of the upper-stage double gear.

[0080] The output part 6001a of the DC motor 6001, the output part 6001a is the output wheel and meshes with the large tooth part of the first-stage double gear 6005. The output gear 6007 is connected to the eccentric wheel 6002, and a crank-slider mechanism is formed between the eccentric wheel 6002 and the output slider 6003. Therefore, as the eccentric wheel 6002 rotates, the output slider 6003 can perform a reciprocating motion, that is, the output slider 6003 switches back and forth between the first motion direction F1 and the second motion direction F2. Since the output slider 6003 is sleeved on the extended end 9001a of the handle 9001, the reciprocating motion of the output slider 6003 can be transformed into the opening and closing motion of the handle 9001. Here, when the output slider 6003 moves in the first motion direction F1, it is equivalent to driving the handle 9001 to close. And when the output slider 6003 moves in the second motion direction F2, it is equivalent to driving the handle 9001 to close.

[0081] There are many ways to form the output slider 6003. It can be a completely integrally formed structure, or a split structure. Taking the split structure as an example, the output slider 6003 includes a first slider 6003a and a driving plate 6003b. Here, the strength of the driving plate 6003b is higher than that of the first slider 6003a. For example, the first slider 6003a is a plastic part, and the driving plate 6003b can be made of a metal part (such as an iron plate, a steel plate, etc.). The two can be fastened with screws. The guide rail 6004 forms a sliding fit with the first slider 6003a. A driving groove 6003c is provided on the driving plate 6003b. The driving groove 6003c consists of two parts. One part is the opening driving wall 6003c1, and the other part is the closing driving wall 6003c2. The eccentric wheel 6002 is always in the driving groove 6003c during rotation. When the eccentric wheel 6002 presses on the closing driving wall 6003c2, it will push the driving plate 6003b to slide along the first movement direction F1. As the driving plate 6003b slides to the end position in the first movement direction F1, the eccentric wheel 6002 is also continuously rotating. When the driving plate 6003b is at the end position in the first movement direction F1, the eccentric wheel 6002 has also moved to near the opening driving wall 6003c1. At this time, the eccentric wheel 6002 will push the opening driving wall 6003c1, causing the driving plate 6003b to slide along the second movement direction F2 until the driving plate 6003b slides to the end position in the second movement direction F2, thus realizing a reciprocating motion.

[0082] The above-mentioned transmission connection between the output gear 6007 and the eccentric wheel 6002 is completed by the input shaft 6008, and the input shaft 6008 can also be used for manual operation. Here, the eccentric wheel 6002 is fixed to the lower end of the input shaft 6008, and the upper end of the input shaft 6008 has a handle jack 6008a. One end of the input shaft 6008 with the handle jack 6008a is exposed above the first bracket 6000a, and an exposed hole 1003b is provided at the corresponding position of the upper cover 1003. By inserting an external handle 7000 through the exposed hole 1003b into the handle jack 6008a, the input shaft 6008 can be driven to rotate by the external handle 7000, causing the eccentric wheel 6002 to rotate. Here, the input shaft 6008 and the output gear 6007 are connected by a clutch structure. That is, when the input shaft 6008 rotates along the first direction S1 (which can also be said to be clockwise rotation), the input shaft 6008 is disengaged from the output gear 6007, and the rotation of the input shaft 6008 will not cause the rotation of the output gear 6007. When the output gear 6007 rotates along the first direction S1 (which can also be said to be clockwise rotation), on the contrary, it can form a transmission with the input shaft 6008.

[0083] There are many choices for this clutch structure. Here, a relatively simple implementation is given as an example. The clutch structure includes a driving finger 6009a, an elastic member 6009b, and a transmission channel 6009c. The transmission channel 6009c is a hole formed in the output gear 6007. The hole wall of this hole includes a connected stop wall 6009c1 and an arc wall 6009c2. The arc wall 6009c2 is located in the clockwise direction of the stop wall 6009c1. The driving finger 6009a is inserted through the input shaft 6008 and can slide along the radial direction of the input shaft 6008. The elastic member 6009b is a spring structure and stores energy when the driving finger 6009a retracts towards the inside of the input shaft 6008. The driving finger 6009a is outside the input shaft 6008. When the input shaft 6008 rotates in the first direction S1 (clockwise), the driving finger 6009a will slide along the arc wall 6009c2 and gradually retract into the input shaft 6008. Since there is no force transmission relationship between the driving finger 6009a and the transmission channel 6009c in the radial direction, the input shaft 6008 is disengaged from the output gear 6007 (here, the disengagement of the fit means that there is no force transmission between the two). Conversely, when the output gear 6007 rotates in the first direction S1 (clockwise), due to the stop wall 6009c1 acting on the driving finger 6009a and the two being stuck in the radial direction, that is, there is a force transmission relationship between the driving finger 6009a and the transmission channel 6009c in the radial direction, the output gear 6007 will drive the input shaft 6008 to rotate.

[0084] When manual operation is not required, the exposed hole 1003b can be shielded by the slide plate 10037. The specific structure is as follows. The slide plate 10037 is slidably arranged inside the upper cover 1003. Here, the slide plate 10037 forms a sliding fit with the chute 6000a1 above the first bracket 6000a through its own slide rail 10037a. A part of the slide plate 10037 extends out of the upper cover 1003 for user operation. Here, the slide plate 10037 has two positions, the first position and the second position. When in the first position, it blocks between the exposed hole 1003b and the handle jack 6008a. When in the second position, it connects the exposed hole 1003b and the handle jack 6008a.

[0085] This kind of slide plate 10037 can also be used to achieve the interlock between manual operation and electric operation. To achieve the interlock, a changeover switch 10038 is also provided within the movement track of the slide plate 10037. Here, the changeover switch 10038 is a microswitch. Of course, in addition to the microswitch, Hall elements, photoelectric induction switches, infrared induction switches, etc. can also be used, as long as they can perform position detection. Here, the changeover switch 10038 is electrically connected to the control component 400. When the slide plate 10037 is in the second position, the changeover switch 10038 can be triggered. After being triggered, the changeover switch 10038 feeds back a signal to the control component 400, and the control component 400 can prohibit the closing operation of the motor, thus playing the role of interlock.

[0086] To enable the control component 400 to obtain the feedback of the circuit breaker status, the control component 400 further includes a position detection switch 401. The position detection switch 401 is arranged on the movement track of the output slider 6003 and is located near the left guide rail 6004 in this embodiment. When the output slider 6003 moves to a certain position in the first movement direction F1, the position detection switch 401 will be triggered. Here, the certain position means that the output slider 6003 is sufficient to drive the handle 9001 to achieve the closing operation, and the control component 400 can obtain the signal feedback of the circuit breaker closing. In this embodiment, the position detection switch 401 uses a microswitch. Of course, in addition, Hall elements, photoelectric induction switches, infrared induction switches, etc. can also be used. The circuit breaker closing signal here can be used as the judgment basis for the control component 400 to determine whether to stop the DC motor 6001, or the working status of the circuit breaker can be fed back to an external host computer, PC terminal, etc. through the communication module.

[0087] To facilitate the installation of the external handle 7000, a first cavity 1051 is formed on the cover body 1002, and a second cavity 1052 is formed on the upper cover 1003. In this way, when the upper cover 1003 and the cover body 1002 are fixed, the first cavity 1051 and the second cavity 1052 cooperate to form a storage groove 1050.

[0088] Since the external handle 7000 includes a connected first part 7001 and a second part 7002, the first part 7001 and the second part 7002 are vertically arranged, and both the first part 7001 and the second part 7002 are rod-shaped components with non-circular cross-sections. The first cavity 1051 can be made in the form of a slot so that a part of the first part 7001 is inserted into the slot. The second cavity 1052 can be made to include the second part 7002 and a part of the first part 7001 (here, the part of the first part 7001 refers to the first part 7001 at the connection with the second part 7002). Such a cavity arrangement can make full use of the space of the cover body 1002 and the upper cover 1003, which is beneficial to the design of the storage slot 1050.

[0089] At the notch of the storage slot 1050, a hook 1053 is provided. The hook 1053 hooks the external handle 7000 so that a detachable fit is formed between the external handle 7000 and the storage slot 1050. An avoidance slot 1054 is formed on the storage slot 1050. The avoidance slot 1054 extends below a part of the external handle 7000 to facilitate a finger to enter the avoidance slot 1054 to hook out the external handle 7000. Here, the hook 1053 and the avoidance slot 1054 are both provided on the second cavity 1052, that is, the hook 1053 and the avoidance slot 1054 both cooperate with the second part 7002.

[0090] In order to achieve status indication, an indication hole 1003c is formed in the upper cover 1003. A part of the output slider 6003 (the driving plate 6003b) extends below the indication hole 1003c to form an indication part 60030. In this way, by the movement of the output slider 6003, different positions are presented on the indication hole 1003c, and different markings on the indication part 60030 can be presented in the indication hole 1003c to achieve the mechanical indication of the on / off state of the circuit breaker. Here, the markings of the indication part can be patterns, colors, words, or ON, OFF.

[0091] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0092] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A compact intelligent circuit breaker, comprising a base, a cover, an upper cover, an operating mechanism, a test button and a control assembly; the cover is fixed on the base, and the upper cover is fixed on the cover; the cover comprises a partition wall and a side wall surrounding the partition wall, and the side wall, the partition wall and the upper cover form a receiving space; a traction rod of the operating mechanism is located below the partition wall, a driving part is arranged on the traction rod, and a first through hole corresponding to the driving part is opened on the partition wall; the characteristics are: It also includes a DC motor, a gear box and an output slider in the accommodating space, the DC motor is connected to the input end of the gear box, the output end of the gear box is connected to the output slider, one end of the handle of the operating mechanism penetrates the partition wall and is connected to the output slider, after the output torque of the DC motor is changed by the gear box, the opening and closing operation of the operating mechanism is realized by sliding the output slider; the control component includes a human-machine interaction circuit board, the human-machine interaction circuit board is located above the first through hole; the orthographic projection of the human-machine interaction circuit board on the partition wall intersects with the first through hole or includes the first through hole; the test button is located next to the human-machine interaction circuit board, and the test button One end of the test button cooperates with the driving part through the first through hole, and the other end of the test button is exposed on the upper cover; a display device is arranged on the human-machine interaction circuit board, the first through hole is located below the display device, and the orthographic projection of the display device on the partition wall intersects with the first through hole or includes the first through hole; the test button includes a first rod portion and a second rod portion, the first rod portion and the second rod portion are staggered, the first rod portion is located below the display device and cooperates with the first through hole, and the second rod portion is located on one side of the display device for being exposed on the upper cover; the first rod portion is connected to the second rod portion and forms an avoidance space, and the display device part is located in the avoidance space.

2. A compact intelligent circuit breaker according to claim 1, characterized in that: The test button also includes a connecting portion, the first rod portion and the second rod portion are connected through the connecting portion, and the avoidance space is formed by the second rod portion and the connecting portion; there is also a limiting structure in the accommodating space, the limiting structure is a limiting protrusion and / or a limiting groove, and the test button is partially arranged in the limiting structure.

3. A compact intelligent circuit breaker according to claim 2, characterized in that: During the sliding process of the test button, part of the test button slides along the limiting protrusion and / or the limiting groove, and the limiting protrusion and / or the limiting groove are also used to guide the sliding of the test button.

4. The compact intelligent circuit breaker according to claim 1 is characterized in that: The gear box includes a first bracket and a second bracket, the first bracket is fixed on the second bracket, and a gear installation space is formed between the first bracket and the second bracket; At least two levels of double teeth and an output gear are arranged on the gear installation space. The first level of double teeth is the input end of the gear box, and the remaining levels of double teeth are meshed in sequence, and the last level of double teeth is meshed with the output gear; an eccentric wheel is connected to the output gear, and a crank slider mechanism is formed between the eccentric wheel and the output slider. Through the continuous output of the unidirectional DC motor, the eccentric wheel acts on the output slider to make it reciprocate, thereby realizing the opening and closing operation of the operating mechanism.

5. The compact intelligent circuit breaker according to claim 4 is characterized in that: The pitch circle diameter of the output gear is larger than the pitch circle diameter of any one-stage duplex gear; Or / and, the double teeth of each pole satisfy that the pitch circle diameter of the large tooth portion of the double teeth of the next stage is larger than the pitch circle diameter of the double teeth of the previous stage.

6. A compact intelligent circuit breaker according to claim 4, characterized in that: The first bracket is also provided with an avoidance area, into which a portion of the human-machine interaction circuit board extends; And / or, an indication hole is also provided on the upper cover, the output slider has an indication portion extending to the bottom of the indication hole, the indication portion has markings corresponding to the open state and the closed state, and different markings are presented in the indication hole by sliding the output slider to different positions.

7. A compact intelligent circuit breaker according to claim 4, characterized in that: It also includes an input shaft, an eccentric wheel is fixed at one end of the input shaft, a handle socket is opened on the other end of the input shaft, and an exposed hole corresponding to the handle socket is opened on the upper cover; the output gear is connected to the input shaft through a clutch structure, and the clutch structure means that when the input shaft itself rotates in a first direction, it disengages from the output end, and when the output gear rotates in the first direction, it is in transmission connection with the input shaft.

8. A compact intelligent circuit breaker according to claim 7, characterized in that: It also includes an external handle, which is used to cooperate with the handle socket to realize manual opening and closing operations of the operating mechanism; the cover body is formed with a first cavity, and the upper cover is formed with a second cavity, the first cavity and the second cavity together form a storage slot, and the external handle is placed in the storage slot.

9. The compact intelligent circuit breaker according to claim 7, characterized in that: The upper cover is also provided with a slide plate and a conversion switch. The slide plate is located above the first bracket and is slidably arranged. The slide plate is partially exposed outside the upper cover for user operation. The slide plate has a first position where it is blocked between the exposed hole and the handle insertion hole, and a second position where the exposed hole is connected to the handle insertion hole. The conversion switch is arranged in the movement track of the slide plate. When the slide plate is in the second position, the conversion switch is triggered. After being triggered, the conversion switch feeds back a signal to the control component. Alternatively, a slide plate is further provided inside the upper cover, a slide groove is provided on the first bracket, a slide rail is provided on the slide plate, the slide rail and the slide groove form a sliding fit, the slide plate is partially exposed outside the upper cover for user operation, and the slide plate has a first position blocking between the exposed hole and the handle socket, and a second position connecting the exposed hole with the handle socket.

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