Circuit breaker

Abstract

The invention provides a circuit breaker which comprises a circuit breaker module, a protective cover assembly and a transparent observation cover, the circuit breaker module is provided with an operation end, the protective cover assembly comprises an upper protective cover and a lower protective cover which are arranged on the circuit breaker module, and the upper protective cover and the lower protective cover are arranged on the two opposite sides of the circuit breaker module in the first direction respectively. The observation cover is movably arranged between the upper shield and the lower shield to shield or expose the operation end; and the observation cover and the shield assembly are matched to form a waterproof structure on the surface of the circuit breaker module. According to the circuit breaker provided by the invention, by adopting the upper protective cover, the lower protective cover and the observation cover which are arranged on the circuit breaker module, the occupied space is reduced, the heat dissipation efficiency is improved, and the problem that the occupied space is large due to the arrangement of a waterproof box in the prior art can be solved; and the leakage protector is arranged in the waterproof box, so that wiring is inconvenient, and heat dissipation of the leakage circuit breaker is affected.

Description

Technical Field

[0001] This invention relates to the technical field of electrical switching devices, and more specifically, to a circuit breaker. Background Technology

[0002] To improve the ease of installation for high-power electrical equipment, residual current circuit breakers (RCCBs) serve as switching devices to enhance safety during use.

[0003] Currently, most residual current circuit breakers (RCCBs) on the market are not waterproof and require a corresponding waterproof box for outdoor use, such as in charging stations. The waterproof box needs to provide space to house the RCCB, thus it occupies a significant amount of space. Installing the RCCB also requires considerable pre-set space. Furthermore, the wiring inside the waterproof box is complex due to space constraints, making operation inconvenient. Additionally, the RCCB's internal placement can lead to poor heat dissipation, potentially causing overheating, damage to the wiring, and affecting the accuracy of overload protection.

[0004] As can be seen from the above, the current waterproof box design has the problem of taking up a lot of space, and the fact that the residual current device is placed inside the waterproof box makes wiring inconvenient and affects the heat dissipation of the residual current circuit breaker. Summary of the Invention

[0005] The main objective of this invention is to provide a circuit breaker that solves the problems of large space occupation caused by the waterproof box in the prior art, and the problems of inconvenient wiring and heat dissipation of the residual current circuit breaker when the residual current device is placed inside the waterproof box.

[0006] To achieve the above objectives, according to one aspect of the present invention, a circuit breaker is provided, comprising a circuit breaker module having an operating end; a protective cover assembly including an upper protective cover and a lower protective cover disposed on the circuit breaker module, the upper and lower protective covers being respectively disposed on opposite sides of the circuit breaker module along a first direction; a transparent observation cover movably disposed between the upper and lower protective covers to cover or expose the operating end; the observation cover and the protective cover assembly cooperate to form a waterproof structure on the surface of the circuit breaker module; at least a portion of both ends of the observation cover along the first direction overlaps with the upper and lower protective covers.

[0007] Furthermore, the observation cover is rotatably disposed between the upper and lower protective covers, and the observation cover is rotatably connected to one of the upper and lower protective covers.

[0008] Furthermore, one of the upper and lower covers has a rotating part, and the observation cover has a mating part that is rotatably connected to the rotating part. One of the rotating part and the mating part is a rotating shaft extending along a second direction perpendicular to the first direction. The rotating shaft extends toward the side away from the circuit breaker module, and the mating part is a rotating hole that mates with the rotating shaft.

[0009] Furthermore, the upper or lower cover with the rotating part also has a limiting member. The observation cover has an open position and a closed position. When the observation cover is in the open position, the limiting member contacts the observation cover and fixes the observation cover. When the observation cover switches from the open position to the closed position, the limiting member slides with the observation cover.

[0010] Furthermore, the observation cover also has a through hole at the same end as the mating part, and the limiting member is a protrusion extending in the second direction. At least a part of the protrusion protrudes from the upper or lower cover. The protrusion is located on the side of the rotating part facing the operating end of the circuit breaker module. When the observation cover is in the open position, the protrusion extends into the through hole. When the observation cover is in the closed position, the protrusion separates from the through hole.

[0011] Furthermore, the observation cover also has a sliding groove, with a through hole located at one end of the sliding groove and the end of the limiting member located inside the sliding groove. During the switching between the open and closed positions of the observation cover, the end of the limiting member slides within the sliding groove.

[0012] Furthermore, the distance between the bottom surface of the sliding groove and the opening of the groove gradually increases along the direction close to the through hole, and the bottom surface of the sliding groove forms a slope structure. The angle A between the slope structure and the plane where the opening of the groove is located satisfies 15°-30°.

[0013] Furthermore, the observation cover also has a mounting groove, the first end of which is connected to the sliding groove, and the second end of which extends linearly toward the side near the through hole. The mating part of the mounting groove is provided at the second end of the mounting groove. The mounting groove is used for the rotating part to move along the mounting groove to connect with the mating part during the installation of the observation cover.

[0014] Furthermore, the distance between the bottom surface of the mounting groove and the groove opening gradually increases along the direction close to the mating part, and the bottom surface of the mounting groove forms a slope structure. The included angle B between the slope structure and the plane where the groove opening is located satisfies 15°-30°.

[0015] Furthermore, when the observation cover is in the closed position, the through hole and the mating part are collinear along the first direction; and / or the line connecting the through hole and the mating part is perpendicular to the extension direction of the mounting groove.

[0016] Furthermore, the mating part is a rotating hole with a diameter of 3mm-5mm; and / or a through hole with a diameter of 3mm-5mm; and / or the diameter of the rotating hole is larger than that of the through hole.

[0017] Furthermore, one of the upper and lower protective covers is provided with a snap-fit ​​part, and the side of the observation cover away from the mating part has a snap-fit ​​structure. The observation cover has an open position and a closed position. When the observation cover is in the closed position, the snap-fit ​​part and the snap-fit ​​structure are snapped together and fixed.

[0018] Furthermore, along the first direction, one end of the observation cover is rotatably connected to the upper protective cover, and the other end of the observation cover is snapped and fixed to the lower protective cover.

[0019] Furthermore, the observation cover includes a first cover section, a second cover section, and a third cover section that are sequentially connected. The first cover section is rotatably connected to the upper cover and covers the connection area. The third cover section is snapped into the lower cover and covers the portion of the lower cover located on the operating end side of the circuit breaker module. The second cover has a protruding structure to facilitate the installation of the switch structure.

[0020] Furthermore, the end of the observation cover away from the upper cover along the first direction has a first hook structure; the lower cover has a second hook structure, and the first hook structure and the second hook structure are detachably fixedly connected by fasteners.

[0021] Furthermore, the upper cover is snapped onto and / or fastened to the circuit breaker module, forming a first sealed cavity between the upper cover and the circuit breaker module. The first sealed cavity is used to accommodate the exposed wires and wire positioning holes on the upper side of the circuit breaker module.

[0022] Furthermore, the operating end has at least a switch structure, which is disposed in the area between the upper and lower covers along the first direction; and / or the circuit breaker module also has a fixed end, with the operating end and the fixed end disposed on opposite sides of the circuit breaker module, and the direction in which the fixed end and the operating end are disposed opposite each other is perpendicular to the first direction.

[0023] Furthermore, the input and output wiring holes of the circuit breaker module are both located on the lower side of the circuit breaker module. The operating end of the circuit breaker module has wiring fixing holes that communicate with the input and output wiring holes. The lower cover has a hole structure for avoiding the input and output wiring holes. At least a part of the lower cover covers the wiring fixing holes.

[0024] Furthermore, the fixed end and operating end of the circuit breaker module are located on opposite sides of the circuit breaker module. The lower cover includes a bottom support frame that snaps into the circuit breaker module and a top support frame that is fixedly connected to the circuit breaker module by fasteners. The top support frame and the bottom support frame are plugged into each other to form a hole structure. At least a portion of the top support frame is located at the top of the circuit breaker module to cover the wiring fixing hole. The top support frame has a second hook structure.

[0025] Applying the technical solution of this invention, the circuit breaker of this application includes a circuit breaker module, a protective cover assembly, and a transparent observation cover. The circuit breaker module has an operating end. The protective cover assembly includes an upper protective cover and a lower protective cover disposed on the circuit breaker module. The upper and lower protective covers are respectively disposed on opposite sides of the circuit breaker module along a first direction. The observation cover is movably disposed between the upper and lower protective covers to cover or expose the operating end. The observation cover and the protective cover assembly cooperate to form a waterproof structure on the surface of the circuit breaker module. At least a portion of both ends of the observation cover along the first direction overlaps with the upper and lower protective covers.

[0026] As can be seen from the above, the circuit breaker of this application adopts an upper protective cover, a lower protective cover, and an observation cover on the circuit breaker module to form a waterproof structure, thereby achieving the effect of waterproof and dustproof. The upper protective cover, lower protective cover, and observation cover of this application are set on the circuit breaker module, so compared with the waterproof box of the prior art, it does not need to occupy a large installation space, and the circuit breaker of this application has a wider range of applicability for installation.

[0027] The upper cover, lower cover, and observation cover of this application are set on the circuit breaker module. Unlike the prior art where the circuit breaker is placed inside a sealed space, this application adopts a completely new structural design that does not require full enclosure of the circuit breaker module. The structural design of this application does not affect the wiring distribution of the circuit breaker module, which is conducive to improving the convenience of wiring operations. It does not affect the heat dissipation of the circuit breaker module, avoiding damage to the wiring caused by overheating and the possibility of fire. Furthermore, the good heat dissipation effect of this application helps to improve the accuracy of overload protection.

[0028] In order to achieve a good waterproof effect, this application adopts a structure in which at least a portion of both ends of the observation cover is superimposed on the upper and lower protective covers, which is conducive to improving the waterproof effect between the upper protective cover and the observation cover, and between the lower protective cover and the observation cover. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0030] Figure 1 An exploded view of the circuit breaker of the present invention is shown;

[0031] Figure 2 A three-dimensional structural schematic diagram of the circuit breaker of the present invention is shown, with the observation cover in the closed position;

[0032] Figure 3 A three-dimensional structural schematic diagram of the circuit breaker of the present invention is shown, with the observation cover in the open position;

[0033] Figure 4A schematic diagram of the installation structure of the circuit breaker module and the upper and lower protective covers of the present invention is shown.

[0034] Figure 5 It shows Figure 4 Enlarged view of point C in the image;

[0035] Figure 6 It shows Figure 4 Enlarged view of point D in the image;

[0036] Figure 7 A three-dimensional structural schematic diagram of the circuit breaker module of the present invention is shown;

[0037] Figure 8 A three-dimensional structural schematic diagram of the upper protective cover of the present invention is shown;

[0038] Figure 9 A three-dimensional structural schematic diagram of the lower protective cover of the present invention is shown;

[0039] Figure 10 An exploded view of the mounting structure of the lower protective cover of the present invention is shown;

[0040] Figure 11 A schematic diagram of the installation structure of the upper protective cover, lower protective cover, and observation cover of the present invention is shown;

[0041] Figure 12 A three-dimensional structural schematic diagram of the observation cover of the present invention is shown;

[0042] Figure 13 A top view of the observation cover of the present invention is shown;

[0043] Figure 14 It shows Figure 13 EE section view in the middle;

[0044] Figure 15 It shows Figure 13 FF section view in the middle.

[0045] The above figures include the following reference numerals:

[0046] 10. Circuit breaker module; 110. Operating terminal; 120. Switch structure; 130. Wire positioning hole; 140. Wiring fixing hole; 150. Wiring hole; 160. Wire; 20. Upper cover; 201. First sealed cavity; 210. Limiting element; 220. Rotating part; 30. Lower cover; 301. Hole structure; 310. Bottom support frame; 311. Groove; 312. Snap-fit ​​part; 320. Top support frame; 321. Protrusion; 322. Second hook structure; 40. Observation cover; 401. First cover section; 402. Second cover section; 403. Third cover section; 410. Mating part; 420. Through hole; 430. Snap-fit ​​mating structure; 440. First hook structure; 450. Sliding groove; 460. Mounting groove. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0049] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0050] To address the issues of large space requirements associated with existing waterproof boxes and the inconvenience of wiring and heat dissipation problems associated with placing the residual current device (RCD) inside the waterproof box, this invention provides a circuit breaker. In this embodiment, the circuit breaker provided is an RCD for overload protection.

[0051] Example 1

[0052] like Figures 1 to 15 As shown, the circuit breaker includes a circuit breaker module 10, a protective cover assembly, and a transparent observation cover 40. The circuit breaker module 10 has an operating end 110. The protective cover assembly includes an upper protective cover 20 and a lower protective cover 30 disposed on the circuit breaker module 10. Along a first direction, the protective cover 20 and the lower protective cover 30 are respectively disposed on opposite sides of the circuit breaker module 10. The observation cover 40 is movably disposed between the upper protective cover 20 and the lower protective cover 30 to cover or expose the operating end 110. The observation cover 40 and the protective cover assembly cooperate to form a waterproof structure on the surface of the circuit breaker module 10.

[0053] Specifically, in this embodiment, the circuit breaker is equipped with an upper cover 20, a lower cover 30, and an observation cover 40 on the circuit breaker module 10 to form a waterproof structure, thereby achieving the effect of waterproofing and dustproofing.

[0054] In this embodiment, the upper protective cover 20, the lower protective cover 30, and the observation cover 40 are disposed on the circuit breaker module 10. Therefore, compared with the waterproof box of the prior art, it does not require a large installation space, and the circuit breaker installation of this application is more widely applicable.

[0055] The observation cover 40 is made of transparent material, and the status of the operation terminal 110 can be observed through the observation cover 40. It can be understood that the observation cover 40 in this embodiment not only has the effect of waterproofing and dustproofing, but also enables the operation terminal 110 to be observed through the observation cover 40, so as to understand the status of the operation terminal 110 without disassembly.

[0056] In this embodiment, the observation cover 40 has positions that cover and expose the operating end 110. Specifically, the observation cover 40 has an open position and a closed position and can switch between the open position and the closed position. When the observation cover 40 is in the open position, the operating end 110 is exposed and can be operated. When the observation cover 40 is in the closed position, the observation cover 40 covers the operating end 110 for user protection, dust and water protection.

[0057] In this embodiment, the circuit breaker is installed on the mounting surface. The end connected to the mounting surface is the fixed end of the circuit breaker module 10, and the operating end 110 is disposed on one side opposite to the fixed end. A first direction is perpendicular to the direction from the fixed end towards the operating end 110. In this embodiment, the first direction is the height direction of the circuit breaker module 10, and the second direction is the width direction of the circuit breaker module 10. The directions in which the fixed end and the operating end 110 face each other are... Figure 2 The X direction shown is the first direction. Figure 2 The Y direction shown is the second direction. Figure 2 The Z direction is shown in the diagram.

[0058] In one specific embodiment of this example, the circuit breaker module 10 is installed onto the surface to be installed via the upper cover 20 and the lower cover 30. The upper cover 20 and the lower cover 30 have mounting holes on one side of their fixed ends to be fixed to the surface to be installed via the mounting holes. The circuit breaker module 10 is installed onto the surface to be installed via the upper cover 20 and the lower cover 30.

[0059] like Figure 2 and Figure 11 As shown, at least a portion of both ends of the observation cover 40 along the first direction overlaps with the upper cover 20 and the lower cover 30.

[0060] Specifically, in order to achieve a good waterproof effect, one end of the observation cover 40 is overlapped with the upper protective cover 20 and the other end is overlapped with the lower protective cover 30, which helps to improve the waterproof effect between the upper protective cover 20 and the observation cover 40, and between the lower protective cover 30 and the observation cover 40.

[0061] When the observation cover 40 is in the closed position, the observation cover 40 is stacked with the upper cover 20 and the lower cover 30 to prevent rainwater and other substances from seeping into the interior of the observation cover 40 from the stacked area, thus avoiding safety risks.

[0062] In this embodiment, the observation cover 40 is rotatably disposed between the upper cover 20 and the lower cover 30.

[0063] Specifically, the observation cover 40 is flipped in the first direction, allowing it to switch between an open and closed position. This flipping mechanism enables operation of the operating terminal 110 when needed, and closes the observation cover 40 after the operation is complete, thus obscuring the operating terminal 110.

[0064] Furthermore, the observation cover 40 is rotatably connected to one of the upper cover 20 and the lower cover 30. The observation cover 40 can be rotatably connected to the upper cover 20 or the lower cover 30, depending on whether the observation cover 40 can be flipped.

[0065] In this embodiment, the observation cover 40 is rotatably connected to the upper protective cover 20. When the observation cover 40 is switched from the closed position to the open position, the observation cover 40 flips upward, which facilitates operation. When the observation cover 40 is in the open position, the observation cover 40 will not obstruct the user from operating the operating terminal 110.

[0066] like Figures 1 to 11 As shown, one of the upper cover 20 and the lower cover 30 has a rotating part 220, and the observation cover 40 has a mating part 410 that is rotatably connected to the rotating part 220. The other of the upper cover 20 and the lower cover 30 is provided with a snap-fit ​​part 312. The side of the observation cover 40 away from the mating part 410 has a snap-fit ​​structure 430. The observation cover 40 has an open position and a closed position. When the observation cover 40 is in the closed position, the snap-fit ​​part 312 and the snap-fit ​​structure 430 are snapped and fixed.

[0067] In this embodiment, one end of the observation cover 40 is a rotating end, and the other end of the observation cover 40 can be snapped and fixed to the upper cover 20 or the lower cover 30, thereby ensuring that the observation cover 40 can be stably maintained in the closed position. In this embodiment, the snap-fit ​​part 312 and the snap-fit ​​mating part 410 can be a slot and a buckle structure, and the specific structure of the buckle can be an elastic hook or a protrusion structure.

[0068] Preferably, one end of the observation cover 40 along the first direction is rotatably connected to the upper protective cover 20, and the other end of the observation cover 40 is snapped and fixed to the lower protective cover 30. The lower protective cover 30 has a protruding structure, and the observation cover 40 has a slot. After the protruding structure extends into the inside of the slot, the observation cover 40 is fixed in the closed position.

[0069] In this embodiment, the rotation of the observation cover 40 is achieved by the cooperation of the rotating part 220 and the mating part 410. One of the rotating part 220 and the mating part 410 is a rotating shaft extending along a second direction perpendicular to the first direction. The rotating shaft extends along a side away from the circuit breaker module 10. The mating part 410 is a rotating hole that mates with the rotating shaft.

[0070] At least a portion of the rotating shaft passes through the rotating hole, and the actual observation cover 40 is flipped by the relative rotation between the rotating shaft and the rotating hole.

[0071] It is understood that the structure of the rotating part 220 and the mating part 410 is not limited to a rotating shaft and a rotating hole structure. It can also be two rotating shafts, one of which has a groove structure for the other rotating shaft to be inserted into; or it can be other parts that can achieve rotational mating.

[0072] In this embodiment, a rotating shaft is provided on the upper protective cover 20 or the lower protective cover 30, and a rotating hole is provided on the observation cover 40.

[0073] In a preferred embodiment, a rotating shaft is provided on the upper protective cover 20, and a rotating hole is provided on the observation cover 40.

[0074] Furthermore, the mating part 410 is provided at the end of the observation cover 40. In this embodiment, by providing the mating part 410 at the end of the observation cover 40, it is beneficial to increase the range of rotation of the observation cover 40. After the observation cover 40 is rotated open, it is convenient to continue operating the operation end 110.

[0075] In this embodiment, the upper cover 20 or the lower cover 30 with the rotating part 220 also has a limiting member 210. When the observation cover 40 is in the open position, the limiting member 210 contacts the observation cover 40 and fixes the observation cover 40. When the observation cover 40 switches from the open position to the closed position, the limiting member 210 slides with the observation cover 40.

[0076] In order to fix the observation cover 40 in the open position, a limiting member 210 is used to fix the observation cover 40, so that after the observation cover 40 is opened, it is not necessary to hold the observation cover 40 in real time. The observation cover 40 remains suspended, which is convenient for the user to operate the circuit breaker module 10.

[0077] In this embodiment, the observation cover 40 also has a through hole 420 disposed at the same end as the mating part 410. The limiting member 210 is a protrusion extending along the second direction. At least a portion of the protrusion protrudes from the upper cover 20 or the lower cover 30. The protrusion is disposed on the side of the rotating part 220 facing the operating end 110 of the circuit breaker module 10. When the observation cover 40 is in the open position, the protrusion extends into the through hole 420. When the observation cover 40 is in the closed position, the protrusion separates from the through hole 420.

[0078] The structure employs a protruding post and a through hole 420 for positioning the observation cover 40. When the observation cover 40 needs to be switched from the open position to the closed position, due to the elasticity of the observation cover 40, after manually applying external force, the observation cover 40 can achieve the effect of the protruding post disengaging from the through hole 420 and slidingly engaging with the observation cover 40.

[0079] like Figures 12 to 15 As shown, the observation cover 40 also has a sliding groove 450, a through hole 420 located at one end of the sliding groove 450, and the end of the limiting member 210 located inside the sliding groove 450. During the switching between the open and closed positions of the observation cover 40, the end of the limiting member 210 slides within the sliding groove 450.

[0080] Among them, the sliding groove 450 is an arc-shaped groove.

[0081] Specifically, by setting the sliding groove 450, the protrusion can slide inside the sliding groove 450, which helps to reduce damping. In addition, the sliding groove 450 also has the functions of limiting and guiding, preventing the observation cover 40 from shifting and deforming during rotation.

[0082] Furthermore, the distance between the bottom surface and the opening of the sliding groove 450 gradually increases along the direction close to the through hole 420. The bottom surface of the sliding groove 450 forms a slope structure, and the included angle A between the slope structure and the plane where the opening is located satisfies 15°-30°. When the included angle A satisfies 15°-30°, it is beneficial to ensure that the end of the protruding column can keep in contact with the bottom surface of the sliding groove 450 in real time during the rotation of the observation cover 40, thereby improving the stability of the rotation of the observation cover 40.

[0083] Preferably, the included angle A is 19.6°.

[0084] like Figures 12 to 15 As shown, the observation cover 40 also has a mounting groove 460. The first end of the mounting groove 460 is connected to the sliding groove 450, and the second end of the mounting groove 460 extends linearly toward the side near the through hole 420. The mating part 410 of the mounting groove 460 is provided at the second end of the mounting groove 460. The mounting groove 460 is used for the rotating part 220 to move along the mounting groove 460 to connect with the mating part 410 during the installation of the observation cover 40.

[0085] The mounting slot 460 extends along the fixed end of the circuit breaker module 10 toward the operating end 110.

[0086] In this embodiment, during the installation of the observation cover 40, the rotating shaft and the rotating hole need to be matched. That is, the observation cover 40 needs to be pressed down so that the rotating hole of the observation cover 40 moves toward the rotating shaft. Once the rotating shaft is inserted into the rotating hole, the installation is complete. This embodiment provides an installation groove 460 to prevent the rotating shaft from abutting against the observation cover 40 and obstructing the installation process. The installation groove 460 also guides the rotating shaft. The relative sliding of the rotating shaft and the installation groove 460 not only facilitates the installation, but also provides guidance and limiting functions, which helps to improve the installation accuracy and stability of the observation cover 40 and improves the installation efficiency.

[0087] Furthermore, the distance between the bottom surface and the opening of the mounting groove 460 gradually increases along the direction close to the mating part 410. The bottom surface of the mounting groove 460 forms a sloping structure, and the included angle B between the sloping structure and the plane where the opening is located satisfies 15°-30°. When the included angle B satisfies 15°-30°, it is beneficial to ensure that the end of the rotating shaft can maintain contact with the bottom surface of the mounting groove 460 in real time during the installation of the observation cover 40, which helps to improve the stability of the rotation of the observation cover 40.

[0088] Preferably, the included angle B is 19.6°.

[0089] In this embodiment, the observation cover 40 is preferably rotated 90°. When the observation cover 40 is in the closed position, the through hole 420 and the mating part 410 are collinear along a first direction. The mounting groove 460 extends from the fixed end of the circuit breaker module 10 toward the operating end 110, and the line connecting the through hole 420 and the mating part 410 is perpendicular to the extending direction of the mounting groove 460. This allows the observation cover 40 to be fixed in the open position by the engagement of the through hole 420 and the protrusion when rotated 90°.

[0090] In this embodiment, as Figure 12 As shown, the diameter of the rotating hole is larger than the diameter of the through hole 420. The diameter of the rotating hole is 3mm-5mm, specifically 3.5mm, 4mm, 4.5mm, or 5mm. The diameter of the rotating hole can be any value between 3mm and 5mm. The diameter of the through hole 420 is 3mm-5mm, specifically 3.5mm, 4mm, 4.5mm, or 5mm. The diameter of the through hole 420 can be any value between 3mm and 5mm.

[0091] Preferably, the diameter of the rotating hole is 4mm, and the diameter of the through hole 420 is 3.4mm.

[0092] In this embodiment, along the first direction, one end of the observation cover 40 is rotatably connected to the upper protective cover 20, and the other end of the observation cover 40 is snapped and fixed to the lower protective cover 30. The observation cover 40 includes a first cover segment 401, a second cover segment 402, and a third cover segment 403 sequentially connected. The first cover segment 401 is rotatably connected to the upper protective cover 20 and covers the connection area. The third cover segment 403 is snapped to the lower protective cover 30 and covers the portion of the lower protective cover 30 located on the side of the operating end 110 of the circuit breaker module 10. The second cover has a protruding structure to facilitate the housing of the switch structure 120.

[0093] Specifically, the observation cover 40 adopts a structure of a first cover section 401, a second cover section 402 and a third cover section 403 arranged in sequence. The observation cover 40 is adapted to be connected to the upper cover 20 and the lower cover 30 respectively, and is placed on the upper part of the operation end 110.

[0094] To facilitate the adaptation of the structural settings at the operating terminal 110, the second cover section 402 is a protruding structure, so as to form a larger accommodating space at the second cover section 402, which is convenient for accommodating the operating terminal 110 of the circuit breaker module 10.

[0095] In this embodiment, the operating end 110 has at least a switch structure 120. The switch structure 120 can be operated by opening the observation cover 40, and the switch structure 120 can be blocked by closing the observation cover 40 to prevent accidental human contact with the switch structure 120, while also providing waterproof and dustproof effects.

[0096] To further improve the safety of circuit breaker use, such as Figure 2 and Figure 3 As shown, the end of the observation cover 40 away from the upper cover 20 along the first direction has a first hook structure 440; the lower cover 30 has a second hook structure 322, and the first hook structure 440 and the second hook structure 322 are detachably fixedly connected by fasteners.

[0097] The first hook structure 440 and the second hook structure 322 only have locking holes. When the observation cover 40 is in the closed position, the locking holes on the first hook structure 440 and the second hook structure 322 are aligned, and they can be locked by fasteners. The fasteners can be padlocks or structural components such as metal wire. By using fasteners to fix the first hook structure 440 and the second hook structure 322, the observation cover 40 cannot be jammed, ensuring that unauthorized personnel cannot operate it at will.

[0098] It should be noted that in this embodiment, the circuit breaker module 10 uses a wiring hole 150 located on its lower side to achieve a bottom-in, bottom-out structure for the neutral and live wires. This is to prevent water from entering the upper part of the circuit breaker and causing safety hazards, while also facilitating wiring at the lower end. Specifically, the input and output wiring holes for both the neutral and live wires are located on the lower side of the circuit breaker module 10, and the operating end 110 of the circuit breaker module 10 has a wiring fixing hole 140 that communicates with the input and output wiring holes.

[0099] like Figures 8 to 11 As shown, the upper cover 20 is snapped onto the circuit breaker module 10, and a first sealed cavity 201 is formed between the upper cover 20 and the circuit breaker module 10. The first sealed cavity 201 is used to accommodate the exposed wires 160 and wire positioning holes 130 on the upper side of the circuit breaker module 10.

[0100] The conductor positioning hole 130 is located on the operating end 110 side of the circuit breaker module 10 and is used to fix the internal wiring of the circuit breaker module 10.

[0101] Specifically, the upper cover 20 is used to waterproof and dustproof the upper side of the circuit breaker module 10, and to achieve the protective effect by covering the wire 160 and the wire positioning hole 130.

[0102] Of course, the upper cover 20 and the circuit breaker module 10 are not limited to the above-mentioned snap-fit ​​fixing, but can also be fixed by fasteners, such as bolts and other structural components.

[0103] Understandably, to improve the stability of the installation of the upper cover 20, after the upper cover 20 is snapped onto the circuit breaker module 10, the upper cover 20 and the circuit breaker module 10 can be further fixed by fasteners to improve the stability of the connection between the two.

[0104] like Figures 9 to 11 As shown, the lower cover 30 has a hole structure 301 for avoiding the input terminal wiring hole and the output terminal wiring hole. At least a portion of the lower cover 30 covers the wiring fixing hole 140 to block the wiring fixing hole 140.

[0105] Specifically, the lower cover 30 includes a bottom support frame 310 and a top support frame 320. The bottom support frame 310 is snapped into the circuit breaker module 10, and the top support frame 320 is fixedly connected to the circuit breaker module 10 by fasteners. The top support frame 320 and the bottom support frame 310 are plugged into each other to form a hole structure 301. At least a portion of the top support frame 320 is provided at the top of the circuit breaker module 10 to cover the wiring fixing hole 140. The top support frame 320 has a second hook structure 322.

[0106] The observation cover 40 is installed on the part of the top support frame 320 located on the side of the operating end 110 of the circuit breaker module 10. The structure of the cover is designed to improve the waterproof effect and also to protect the lower cover 30.

[0107] The fasteners can be bolts, which are used to fix the lower cover 30 and the circuit breaker module 10 together, thereby improving the stability of the connection of the lower cover 30.

[0108] In this embodiment, the bottom support frame 310 has one of a protrusion 321 and a groove 311, and the top support frame 320 has the other of a protrusion 321 and a groove 311. The protrusion 321 and the groove 311 are interlocked to fix the top support frame 320 and the bottom support frame 310. The protrusion 321 extends along the direction in which the fixed end and the operating end 110 of the circuit breaker module 10 face each other, and the protrusion and the groove 311 are arranged in a one-to-one correspondence, that is, one or more protrusions are provided.

[0109] Example 2

[0110] Unlike Embodiment 1, the observation cover 40 in this embodiment is movably disposed between the upper cover 20 and the lower cover 30 by means of fasteners, which can be bolts.

[0111] Specifically, the observation cover 40 is installed on the upper cover 20 and the lower cover 30 by bolts so that when the observation cover 40 is in the closed position, the observation cover 40 can be removed by disassembling the fasteners, and the observation cover 40 is in the open position after removal; when the observation cover 40 is fixed on the upper cover 20 and the lower cover 30 by fasteners, the observation cover 40 is in the closed position.

[0112] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0113] The circuit breaker of this application adopts an upper protective cover 20, a lower protective cover 30 and an observation cover 40 on the circuit breaker module 10 to form a waterproof structure, thereby achieving the effect of waterproof and dustproof. The upper protective cover 20, the lower protective cover 30 and the observation cover 40 of this application are set on the circuit breaker module 10, so compared with the waterproof box of the prior art, it does not need to occupy a large installation space, and the circuit breaker of this application has a wider range of applicability for installation.

[0114] The upper protective cover 20, lower protective cover 30, and observation cover 40 of this application are disposed on the circuit breaker module 10. Unlike the prior art where the circuit breaker is placed inside a sealed space, this application adopts a completely new structural design that does not require full enclosure of the circuit breaker module 10. The structural design of this application does not affect the wiring distribution of the circuit breaker module 10, which is conducive to improving the convenience of wiring operations. It does not affect the heat dissipation of the circuit breaker module 10, avoiding damage to the wiring caused by overheating and the possibility of fire. Furthermore, the good heat dissipation effect of this application helps to improve the accuracy of overload protection.

[0115] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0116] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0117] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0118] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A circuit breaker, characterized in that, include: Circuit breaker module (10), the circuit breaker module (10) having an operating terminal (110); The shield assembly includes an upper shield (20) and a lower shield (30) disposed on the circuit breaker module (10), and the upper shield (20) and the lower shield (30) are respectively disposed on opposite sides of the circuit breaker module (10) along a first direction; A transparent observation cover (40) is movably disposed between the upper cover (20) and the lower cover (30) to cover or expose the operating end (110). The observation cover (40) and the cover assembly cooperate to form a waterproof structure on the surface of the circuit breaker module (10). At least a portion of both ends of the observation cover (40) along the first direction overlaps with the upper cover (20) and the lower cover (30).

2. The circuit breaker according to claim 1, characterized in that, The observation cover (40) is rotatably disposed between the upper cover (20) and the lower cover (30), and the observation cover (40) is rotatably connected to one of the upper cover (20) and the lower cover (30).

3. The circuit breaker according to claim 2, characterized in that, One of the upper cover (20) and the lower cover (30) has a rotating part (220), and the observation cover (40) has a mating part (410) rotatably connected to the rotating part (220). One of the rotating part (220) and the mating part (410) is a rotating shaft extending along a second direction perpendicular to the first direction. The rotating shaft extends toward a side away from the circuit breaker module (10), and the mating part (410) is a rotating hole that mates with the rotating shaft.

4. The circuit breaker according to claim 3, characterized in that, The upper cover (20) or the lower cover (30) having the rotating part (220) also has a limiting member (210). The observation cover (40) has an open position and a closed position. When the observation cover (40) is in the open position, the limiting member (210) contacts the observation cover (40) and fixes the observation cover (40). When the observation cover (40) switches from the open position to the closed position, the limiting member (210) slides with the observation cover (40).

5. The circuit breaker according to claim 4, characterized in that, The observation cover (40) also has a through hole (420) at the same end as the mating part (410). The limiting member (210) is a protruding post extending in the second direction. At least a part of the protruding post protrudes from the upper cover (20) or the lower cover (30). The protruding post is located on the side of the rotating part (220) facing the operating end (110) of the circuit breaker module (10). When the observation cover (40) is in the open position, the protruding post extends into the through hole (420). When the observation cover (40) is in the closed position, the protruding post separates from the through hole (420).

6. The circuit breaker according to claim 5, characterized in that, The observation cover (40) also has a sliding groove (450), the through hole (420) is located at one end of the sliding groove (450), and the end of the limiting member (210) is located inside the sliding groove (450). During the switching of the observation cover (40) between the open position and the closed position, the end of the limiting member (210) slides in the sliding groove (450).

7. The circuit breaker according to claim 6, characterized in that, Along the direction close to the through hole (420), the distance between the bottom surface of the sliding groove (450) and the opening of the sliding groove (450) gradually increases, and the bottom surface of the sliding groove (450) forms a slope structure. The angle A between the slope structure and the plane where the opening is located satisfies 15°-30°.

8. The circuit breaker according to claim 6, characterized in that, The observation cover (40) also has a mounting groove (460), the first end of which is connected to the sliding groove (450), and the second end of which extends linearly toward the side close to the through hole (420). The mating part (410) of the mounting groove (460) is disposed at the second end of the mounting groove (460). The mounting groove (460) is used for the rotating part (220) to move along the mounting groove (460) to connect with the mating part (410) during the installation of the observation cover (40).

9. The circuit breaker according to claim 8, characterized in that, Along the direction close to the mating part (410), the distance between the bottom surface of the mounting groove (460) and the opening of the mounting groove (460) gradually increases, and the bottom surface of the mounting groove (460) forms a slope structure. The angle B between the slope structure and the plane where the opening is located satisfies 15°-30°.

10. The circuit breaker according to claim 9, characterized in that, When the observation cover (40) is in the closed position, the through hole (420) and the mating part (410) are collinear along a first direction; and / or The line connecting the through hole (420) and the mating part (410) is perpendicular to the extending direction of the mounting groove (460).

11. The circuit breaker according to claim 5, characterized in that, The mating part (410) is a rotating hole. The diameter of the rotating hole is 3mm-5mm; and / or The diameter of the via (420) is 3mm-5mm; and / or The diameter of the rotating hole is larger than the diameter of the through hole (420).

12. The circuit breaker according to claim 3, characterized in that, One of the upper cover (20) and the lower cover (30) is provided with a snap-fit ​​part (312), and the observation cover (40) has a snap-fit ​​structure (430) on the side away from the mating part (410). The observation cover (40) has an open position and a closed position. When the observation cover (40) is in the closed position, the snap-fit ​​part (312) and the snap-fit ​​structure (430) are snapped and fixed.

13. The circuit breaker according to claim 2, characterized in that, Along the first direction, one end of the observation cover (40) is rotatably connected to the upper protective cover (20), and the other end of the observation cover (40) is snapped and fixed to the lower protective cover (30).

14. The circuit breaker according to claim 13, characterized in that, The observation cover (40) includes a first cover section (401), a second cover section (402), and a third cover section (403) connected in sequence. The first cover section (401) is rotatably connected to the upper cover (20) and covers the connection area. The third cover section (403) is snapped into the lower cover (30). The third cover section (403) covers the portion of the lower cover (30) located on the side of the operating end (110) of the circuit breaker module (10). The second cover is a protruding structure to facilitate the accommodation of the switch structure (120) on the operating end (110).

15. The circuit breaker according to any one of claims 1 to 14, characterized in that, The observation cover (40) along the first direction has a first hook structure (440) at one end away from the upper cover (20); the lower cover (30) has a second hook structure (322), and the first hook structure (440) and the second hook structure (322) are detachably fixedly connected by fasteners.

16. The circuit breaker according to any one of claims 1 to 14, characterized in that, The upper cover (20) is snapped onto and / or fastened to the circuit breaker module (10), and a first sealed cavity (201) is formed between the upper cover (20) and the circuit breaker module (10). The first sealed cavity (201) is used to accommodate the exposed wires (160) and wire positioning holes (130) on the upper side of the circuit breaker module (10).

17. The circuit breaker according to any one of claims 1 to 14, characterized in that, The operating terminal (110) has at least a switch structure (120), which is disposed in the region between the upper cover (20) and the lower cover (30) along the first direction; and / or The circuit breaker module (10) also has a fixed end, and the operating end (110) and the fixed end are arranged on opposite sides of the circuit breaker module (10). The direction in which the fixed end and the operating end (110) are arranged opposite each other is perpendicular to the first direction.

18. The circuit breaker according to any one of claims 1 to 14, characterized in that, The input terminal wiring hole and the output terminal wiring hole of the circuit breaker module (10) are both located on the lower side of the circuit breaker module (10). The operating end (110) of the circuit breaker module (10) has a wiring fixing hole (140) that communicates with the input terminal wiring hole and the output terminal wiring hole. The lower cover (30) has a hole structure (301) for avoiding the input terminal wiring hole and the output terminal wiring hole. At least a part of the lower cover (30) covers the wiring fixing hole (140).

19. The circuit breaker according to claim 18, characterized in that, The fixed end and the operating end (110) of the circuit breaker module (10) are disposed on opposite sides of the circuit breaker module (10), and the lower cover (30) includes: Bottom support frame (310), which is snapped into the circuit breaker module (10); A top support frame (320) is fixedly connected to the circuit breaker module (10) by fasteners. The top support frame (320) and the bottom support frame (310) are inserted and fitted together to form the hole structure (301). At least a portion of the top support frame (320) is disposed at the top of the circuit breaker module (10) to cover the wiring fixing hole (140). The top support frame (320) has a second hook structure (322).

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