Protective shell and circuit breaking device

Abstract

The utility model relates to the field of circuit breakers, in particular to a protective shell and a circuit breaking device. A mounting surface used for mounting the circuit breaker is arranged in the protective shell, at least part of the mounting surface of the protective shell is inwards recessed towards the outer side to form a recessed surface, and the projection of the recessed surface is at least partially overlapped with the projection of a conducting bar of the circuit breaker along a projection surface perpendicular to the mounting surface. Therefore, the electric gap between the concave surface and the conducting bar of the circuit breaker is increased. According to the circuit breaker, the concave surface is arranged to be concave outwards, and the position of the conducting bar corresponds to the position of the concave surface, so that an electric gap between the concave surface and the conducting bar of the circuit breaker is increased, the situation of short circuit caused by too close distance between the conducting bar and the concave surface can be reduced, and the safety of the circuit breaking device is improved.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, and more particularly to a protective enclosure and a circuit breaking device. Background Technology

[0002] In related technologies, circuit breakers are typically equipped with an enclosure. The enclosure effectively protects the circuit breaker and reduces the impact of external factors such as rain and impacts on its operation. The enclosure is usually made of metal for better strength. However, if the enclosure is too close to the circuit breaker's conductors, there is a risk of the enclosure becoming live or even causing an open circuit, posing a certain safety hazard. Utility Model Content

[0003] One object of this application is to provide a highly secure protective enclosure and circuit breaker.

[0004] To achieve the above objectives, this application provides a solution: a protective housing, wherein the interior of the protective housing is provided with a mounting surface for installing a circuit breaker, and the mounting surface of the protective housing is at least partially recessed outward to form a concave surface. Along a projection plane perpendicular to the mounting surface, the projection of the concave surface at least partially overlaps with the projection of the conductive bar of the circuit breaker, thereby increasing the electrical clearance between the concave surface and the conductive bar of the circuit breaker.

[0005] In the aforementioned protective housing, by setting the recessed surface to be recessed outwards and the position of the conductive bar corresponding to the position of the recessed surface, the electrical clearance between the recessed surface and the conductive bar of the circuit breaker is increased. This reduces the possibility of short circuits caused by the conductive bar being too close to the recessed surface, thus improving the safety of the circuit breaker.

[0006] Optionally, the recessed surface is parallel to the mounting surface.

[0007] In the aforementioned protective housing, when the circuit breaker is in normal use, it is usually installed vertically. At this time, both the recessed surface and the mounting surface are vertically set, which can improve the flatness of the circuit breaker.

[0008] Optionally, the outer side of the protective housing is recessed into the interior of the protective housing at a position corresponding to the mounting surface.

[0009] Even with recessed surfaces, the thickness of the protective housing on the side with the mounting surface remains consistent, thus reducing the amount of material used and lightening the weight.

[0010] Optionally, there are two recessed surfaces, located on the same side of the protective housing and on opposite sides of the mounting surface.

[0011] In the aforementioned protective enclosure, the upper recessed surface increases the electrical clearance between the outgoing wire at the top of the circuit breaker and the protective enclosure, while the lower recessed surface increases the electrical clearance between the conductor bar and the recessed surface. The wires extending from the top and bottom of the circuit breaker also increase the electrical clearance, thereby further enhancing safety.

[0012] Optionally, the protective housing includes an outer shell and an inner shell. The inner shell is disposed within the outer shell and is an insulating inner shell, with the mounting surface and the recessed surface located within the inner shell.

[0013] In the aforementioned protective enclosure, the inclusion of an insulating inner shell can increase insulation performance and reduce the occurrence of short circuits.

[0014] Optionally, the outer casing includes a metal shell and a cover plate. The inner shell is disposed within the metal shell. The cover plate is located on the side away from the mounting surface and covers the metal shell.

[0015] The aforementioned protective enclosure is designed with a cover plate and a metal shell to allow for disassembly, facilitating the removal, maintenance, and replacement of the internal circuit breaker.

[0016] Optionally, the protective housing is provided with heat dissipation holes on opposite sides.

[0017] In the aforementioned protective enclosure, the heat generated by the circuit breaker can be exchanged with the outside through the heat dissipation holes, which helps to improve the heat dissipation effect.

[0018] This application also provides a circuit breaker device, including a protective housing and a circuit breaker, wherein the circuit breaker is disposed within the protective housing, and the circuit breaker includes a circuit breaker body and a conductive busbar. The circuit breaker body is mounted on the mounting surface. One end of the conductive busbar is connected to the circuit breaker body, and the other end extends toward the recessed surface, such that on a projection plane perpendicular to the mounting surface, the projection of the recessed surface at least partially overlaps with the projection of the conductive busbar.

[0019] In the aforementioned circuit breaker, a recessed surface is provided to increase the electrical clearance, thereby improving safety.

[0020] Optionally, the circuit breaker further includes an insulating post, one end of which is connected to the recessed surface and the other end of which is connected to the conductive busbar.

[0021] In the aforementioned circuit breaker, insulating posts are provided to support the conductive busbar, thereby improving the stability of the conductive busbar, reducing the occurrence of loose conductive busbar during wiring, and improving the convenience of wiring the conductive busbar.

[0022] Optionally, the conductive bar includes multiple conductive strips, the conductive strips being stepped in shape to increase the number of wires connected.

[0023] In the circuit breaker described above, by setting the conductive strips to be stepped, each vertical segment of the step can be connected to a wire, thereby increasing the number of wires that each conductive strip can connect to.

[0024] The beneficial effects of this application are as follows:

[0025] The recessed surface of the protective housing increases the electrical clearance and creepage distance of the conductor bar, thereby improving the safety of the circuit breaker. Furthermore, by designing the protective housing as an inner shell and an outer shell, with the inner shell being plastic and the outer shell being metal, both the strength of the protective housing and the insulation performance are further improved. An insulating post is connected at one end to the recessed surface and at the other end to the conductive strip, supporting the conductive strip and improving its stability. This reduces the likelihood of the conductive strip swaying during wiring, which could affect wiring efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the assembly structure of the circuit breaker device provided in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the assembly structure of the circuit breaker device provided in the embodiments of this application from another angle;

[0029] Figure 3 This is an exploded view of the circuit breaker device provided in the embodiments of this application;

[0030] Figure 4 This is an exploded view of the circuit breaker device provided in the embodiments of this application from another angle;

[0031] Figure 5 This is a schematic diagram of the assembly structure of the circuit breaker and insulating column provided in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the conductive strip provided in an embodiment of this application;

[0033] Explanation of reference numerals: 1000, Circuit breaker; 10, Protective housing; 101, Mounting surface; 102, Recessed surface; 103, Top through hole; 104, Bottom through hole; 105, Heat dissipation hole; 11, Housing body; 111, Metal shell; 112, Cover plate; 12, Inner housing; 20, Circuit breaker; 21, Conductor bar; 211, Conductor strip; 22, Circuit breaker body; 30, Wiring harness adapter; 40, Insulating post. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Please see Figures 1 to 6 As shown, Figure 1 This is a schematic diagram of the assembly structure of the circuit breaker 1000 provided in the embodiments of this application. Figure 2 This is a schematic diagram of the assembly structure of the circuit breaker 1000 provided in the embodiments of this application from another angle. Figure 3 This is an exploded view of the circuit breaker device 1000 provided in the embodiments of this application. Figure 4 This is an exploded view of the circuit breaker device 1000 provided in the embodiments of this application from another angle.

[0036] Figure 5 This is a schematic diagram of the assembly structure of the circuit breaker 20 and the insulating column 40 provided in the embodiments of this application.

[0037] Figure 6 This is a schematic diagram of the structure of the conductive strip 211 provided in the embodiment of this application.

[0038] Please see Figure 1 and Figure 2 This application provides a protective housing 10 and a circuit breaker 1000 including the protective housing 10. When the circuit is overloaded or a short circuit occurs, the circuit breaker 1000 will automatically disconnect the current to ensure the safety of the equipment and allow the equipment to operate normally.

[0039] Please see Figure 3 The circuit breaker device 1000 also includes a circuit breaker 20, which is housed within a protective enclosure 10. The protective enclosure 10 protects the circuit breaker 20, reducing the likelihood of short circuits caused by rain or damage caused by impacts. The circuit breaker 20 includes a conductive busbar 21 for wiring.

[0040] The protective housing 10 has a mounting surface 101 inside, and the circuit breaker 20 is mounted on the mounting surface 101. The mounting surface 101 of the protective housing 10 is at least partially recessed outward to form a recessed surface 102. On the projection surface perpendicular to the mounting surface 101, the projection of the recessed surface 102 at least partially overlaps with the projection of the conductor bar 21 of the circuit breaker 20.

[0041] By setting the recessed surface 102 to be recessed outward, and the position of the conductive bar 21 corresponding to the position of the recessed surface 102, the electrical clearance between the recessed surface 102 and the conductive bar 21 of the circuit breaker 20 is increased. This reduces the possibility of short circuits caused by the conductive bar 21 being too close to the recessed surface 102, which is beneficial to improving the safety of the circuit breaker 1000.

[0042] In some embodiments, both the recessed surface 102 and the mounting surface 101 are planar, and the recessed surface 102 is parallel to the mounting surface 101. When the circuit breaker 1000 is in normal use, the circuit breaker 1000 is usually installed vertically. At this time, both the recessed surface 102 and the mounting surface 101 are vertically arranged, which can improve the flatness of the circuit breaker 1000.

[0043] It should be noted that the recessed surface 102 and the mounting surface 101 are not limited to being parallel. In some other embodiments, the recessed surface 102 may also be an inclined surface relative to the mounting surface 101. The recessed surface 102 is also not limited to being a plane. In some other embodiments, it may also be an arc surface.

[0044] In some embodiments, the outer side of the protective housing 10 is recessed into the interior of the protective housing 10 at the position corresponding to the mounting surface 101. Thus, even with the recessed surface 102, the thickness of the side of the protective housing 10 with the mounting surface 101 can remain consistent, thereby reducing the material used in the protective housing 10 and reducing its weight.

[0045] In some embodiments, there are two recessed surfaces 102, located on the same side of the protective housing 10 and on opposite sides of the mounting surface 101. Specifically, when the circuit breaker 1000 is normally installed, one recessed surface 102 is located above the mounting surface 101, and the other recessed surface 102 is located below the mounting surface 101. The upper recessed surface 102 increases the electrical clearance between the outgoing wire at the upper end of the circuit breaker 20 and the protective housing 10, while the lower recessed surface 102 increases the electrical clearance between the conductive busbar 21 and the recessed surface 102. This increases the electrical clearance for wires extending from both the upper and lower ends of the circuit breaker 20, thereby further enhancing safety.

[0046] It should be noted that the number of recessed surfaces 102 is not limited. For example, if there is one recessed surface 102, the mounting surface 101 is located on the top, the recessed surface 102 is located on the bottom, and the circuit breaker 20 is mounted on the mounting surface 101, that is, the circuit breaker 20 is located on the upper side of the protective housing 10.

[0047] Please continue reading. Figure 3 In some embodiments, the upper end of the protective housing 10 is provided with a plurality of upper through holes 103, which penetrate the upper end of the protective housing 10, and the wires at the upper end of the circuit breaker 20 can extend out of the protective housing 10 through the upper through holes 103.

[0048] In some embodiments, the circuit breaker 1000 further includes a wire harness adapter 30, which is disposed at the upper through-hole 103, through which the wires at the upper end of the circuit breaker 20 extend out of the protective housing 10. Optionally, the wire harness adapter 30 may be made of rubber, which has better waterproof properties.

[0049] The wire harness adapter 30 is waterproof, which can reduce the occurrence of rainwater spreading along the wires to the circuit breaker 20 when it rains, thus improving the waterproof performance of the circuit breaker device 1000.

[0050] Please see Figure 4 In some embodiments, the lower end of the protective housing 10 is provided with a lower through hole 104, which passes through the lower end of the protective housing 10. The wires of the conductive bus 21 can extend out of the protective housing 10 through the lower through hole 104 at the lower end.

[0051] In some embodiments, heat dissipation holes 105 are provided on opposite sides of the protective housing 10. The heat dissipation holes 105 penetrate through the side of the protective housing 10 to allow communication between the outside and the inside of the protective housing 10. This allows the heat generated by the circuit breaker 20 to be exchanged with the outside through the heat dissipation holes 105, which helps to improve the heat dissipation effect. Optionally, the heat dissipation holes 105 are provided on the vertical sides of the protective housing 10, and these two sides are adjacent to the mounting surface 101. Each side is provided with a plurality of heat dissipation holes 105, which are strip-shaped and arranged at intervals.

[0052] The heat dissipation holes 105 are located on the side of the protective housing 10 in a vertical position, which can reduce the occurrence of rainwater falling from above directly hitting the circuit breaker 20 through the heat dissipation holes 105 when it rains.

[0053] Optionally, the heat dissipation hole 105 is positioned directly opposite the circuit breaker 20 so that the heat generated by the circuit breaker 20 can be quickly dissipated from the heat dissipation hole 105.

[0054] Please see Figure 3 and Figure 4In some embodiments, the protective housing 10 includes an outer housing 11 and an inner housing 12, with the inner housing 12 disposed within the outer housing 11. The mounting surface 101 and the recessed surface 102 are located within the inner housing 12, and the circuit breaker 20 is disposed within the inner housing 12. The inner housing 12 is an insulating inner housing 12.

[0055] The protective enclosure 10 includes inner and outer shells 11 and an inner shell 12. The two layers of protection can further enhance safety. In addition, the insulating inner shell 12 can increase insulation performance. The connection method between the inner shell 12 and the outer shell 11 is not limited. For example, the inner shell 12 can be connected to the outer shell 11 by adhesive or by bolts.

[0056] Alternatively, the inner housing 12 may be made of plastic, which is both insulating and lightweight, without excessively increasing the weight of the circuit breaker 1000.

[0057] Optionally, the inner housing 12 is generally a cuboid with an opening, the opening of which is located on the side opposite to the mounting surface 101, so as to facilitate the installation of the circuit breaker 20 in the mounting surface 101.

[0058] The inner housing 12 has a shape that is approximately the same as that of the outer housing 11, so that the inner housing 12 can fit tightly against the outer housing 11. Specifically, both the inner housing 12 and the outer housing 11 are provided with an upper through hole 103, a lower through hole 104, and a heat dissipation hole 105 at corresponding positions, so that the wires can extend out of the protective housing 10 and facilitate heat dissipation. Optionally, the inner housing 12 can be made of plastic.

[0059] In some embodiments, the outer casing 11 includes a metal shell 111 and a cover plate 112, the shape of the metal shell 111 corresponding to the shape of the inner casing 12. The cover plate 112 is located on the side away from the mounting surface 101 and covers the metal shell 111. Optionally, through holes are provided at corresponding positions on the metal shell 111 and the cover plate 112 to facilitate the installation of the metal shell 111 and the cover plate 112 by bolts.

[0060] By providing a cover plate 112 and a metal shell 111, the outer shell 11 can be disassembled, facilitating the disassembly, maintenance, and replacement of the internal circuit breaker 20.

[0061] In some embodiments, the cover plate 112 is a transparent acrylic sheet, which allows the user to observe the circuit breaker 20 inside the protective housing 10.

[0062] Please see Figure 5In some embodiments, the circuit breaker 20 further includes a circuit breaker body 22, which can be bolted to the mounting surface 101. One end of the conductor bar 21 is connected to the circuit breaker body 22, and the other end extends toward the recessed surface 102, such that the projection of the recessed surface 102 on the projection plane perpendicular to the mounting surface 101 at least partially overlaps with the projection of the conductor bar 21.

[0063] The extension of the conductive busbar 21 toward the concave surface 102 can be understood as extending toward the one concave surface 102 closest to the other of the two concave surfaces 102, that is, extending downwards. The direction of the downward extension is not limited to vertical downwards, but can also be inclined downwards.

[0064] Please see Figure 5 and Figure 6 In some embodiments, the conductive bar 21 includes a plurality of conductive strips 211, each of which is stepped in shape, and the plurality of conductive strips 211 are spaced apart in the horizontal direction to increase the number of wires.

[0065] Specifically, the conductive strip 211 comprises several vertical segments and several horizontal segments, which are alternately connected. A single wire can be fixed to one vertical segment, allowing one conductive strip 211 to connect multiple wires, thus increasing the number of connections. Optionally, there are three vertical segments and two horizontal segments, with the uppermost vertical segment connected to the circuit breaker body 22. Optionally, the conductive strip 211 is made of copper.

[0066] The conductive bar 21 includes multiple conductive strips 211, each of which is stepped in shape. The multiple conductive strips 211 are spaced apart in the horizontal direction to increase the number of wires.

[0067] It should be noted that the vertical segment and the horizontal segment are not limited to being vertical or horizontal; they can also form a certain angle with respect to the vertical or horizontal plane.

[0068] In some embodiments, the circuit breaker 1000 further includes an insulating post 40, which is made of an insulating material, such as plastic or rubber. The insulating post 40 is horizontally positioned, with one end connected to the recessed surface 102 and the other end connected to the conductive busbar 21.

[0069] Optionally, there may be multiple insulating posts 40, and the number of insulating posts 40 is the same as the number of conductive strips 211, that is, each insulating post 40 is connected to one conductive strip 211 to ensure the positional stability of each conductive strip 211.

[0070] Insulating posts 40 are provided to support the conductive busbar 21, thereby improving the stability of the conductive busbar 21, reducing the occurrence of loosening of the conductive busbar 21 during wiring, and improving the convenience of wiring the conductive busbar 21. Optionally, the insulating post 40 can be a hollow insulating post 40, so that the insulating post 40 can be fixed to the inner housing 12 and the outer housing 11 by bolts, and the insulating post 40 can be fixed to the conductive busbar 21 by bolts.

[0071] In summary, the embodiments of this application provide a protective housing 10 and a circuit breaker 1000 including the protective housing 10. The recessed surface 102 of the protective housing 10 increases the electrical clearance and creepage distance of the conductive busbar 21, thereby improving the safety of the circuit breaker 1000. Furthermore, by providing the protective housing 10 including an inner shell 12 and an outer shell 11, with the inner shell 12 being plastic and the outer shell 11 being metal, both the strength of the protective housing 10 and the insulation performance can be further improved. The insulating post 40 is connected at one end to the recessed surface 102 and at the other end to the conductive strip 211, supporting the conductive strip 211 and improving its stability. This reduces the occurrence of the conductive strip 211 wobbling during wiring, which affects wiring efficiency.

[0072] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0073] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0074] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0075] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the content of this application's specification and drawings under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A protective housing, wherein the interior of the protective housing is provided with a mounting surface for installing a circuit breaker, characterized in that, The mounting surface of the protective housing is at least partially recessed outward to form a concave surface. Along a projection plane perpendicular to the mounting surface, the projection of the concave surface at least partially overlaps with the projection of the conductive bar of the circuit breaker, thereby increasing the electrical clearance between the concave surface and the conductive bar of the circuit breaker.

2. The protective casing according to claim 1, characterized in that, The recessed surface is parallel to the mounting surface.

3. The protective casing according to claim 2, characterized in that, The outer side of the protective housing is recessed into the interior of the protective housing at a position corresponding to the mounting surface.

4. The protective shell according to claim 1, characterized in that, There are two recessed surfaces, located on the same side of the protective shell and on opposite sides of the mounting surface.

5. The protective casing according to claim 1, characterized in that, The protective housing includes: outer shell; An inner housing is disposed within the outer housing, and the inner housing is an insulating inner housing. The mounting surface and the recessed surface are located within the inner housing.

6. The protective casing according to claim 5, characterized in that, The outer casing includes: A metal shell, wherein the inner shell is disposed within the metal shell; A cover plate, located on the side away from the mounting surface, and covering the metal casing.

7. The protective casing according to any one of claims 1 to 6, characterized in that, The protective shell has heat dissipation holes on opposite sides.

8. A circuit breaker device, characterized in that, Including the protective enclosure as described in any one of claims 1 to 7, the circuit breaker further includes a circuit breaker disposed within the protective enclosure, the circuit breaker comprising: A circuit breaker body, wherein the circuit breaker body is mounted on the mounting surface; A conductive busbar, one end of which is connected to the circuit breaker body, and the other end of which extends toward the recessed surface, such that the projection of the recessed surface on a projection plane perpendicular to the mounting surface at least partially overlaps with the projection of the conductive busbar.

9. The circuit breaker according to claim 8, characterized in that, The circuit breaker also includes an insulating post, one end of which is connected to the recessed surface and the other end of which is connected to the conductive busbar.

10. The circuit breaker according to claim 8, characterized in that, The conductive busbar includes multiple conductive strips, which are stepped in shape to increase the number of wires.

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