Base assembly and drawer type circuit breaker

Abstract

The utility model provides a base assembly and a drawer type circuit breaker, and belongs to the technical field of electrical equipment. The base assembly comprises a drawer base and a first baffle. The drawer base comprises an upper mounting cavity and a lower mounting cavity, the upper mounting cavity and the lower mounting cavity are both used for mounting the electric connection structure, and a plurality of first air holes penetrating through the drawer base are formed in the cavity wall of the upper mounting cavity and the cavity wall of the lower mounting cavity. The first baffle is connected with the drawer base and located between the upper mounting cavity and the lower mounting cavity. The first baffle is provided with a gas exchange groove in the arrangement direction of the upper mounting cavity and the lower mounting cavity, and the gas exchange groove communicates with the upper mounting cavity and the lower mounting cavity. The drawer-type circuit breaker is provided with the plurality of first air holes, air circulation between the inside and the outside of the drawer-type circuit breaker is improved, and air circulation among the plurality of mounting cavities is improved by arranging the plurality of air exchange grooves. Therefore, heat dissipation in the drawer type circuit breaker can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a base assembly and a drawer-type circuit breaker. Background Art

[0002] A drawer-type circuit breaker is a modular circuit breaker used to protect and control circuits. It typically consists of a breaker body and a drawer housing. The breaker body is slidably connected to the drawer housing and can be swing out of the housing.

[0003] In the prior art, the circuit breaker body within a drawer-type circuit breaker is electrically connected to an external conductive member via an electrical connection structure. However, in actual use, the electrical connection structure is prone to overheating, which can affect the internal components of the drawer-type circuit breaker and thus shorten the overall service life of the drawer-type circuit breaker. Therefore, a base assembly and a drawer-type circuit breaker are urgently needed. Utility Model Content

[0004] The present application provides a base assembly and a drawer-type circuit breaker to improve the heat dissipation effect inside the drawer-type circuit breaker.

[0005] In a first aspect, the present application provides a base assembly for use with a drawer-type circuit breaker, the drawer-type circuit breaker including an electrical connection structure. The base assembly comprises a drawer base and a first baffle. The drawer base comprises an upper mounting cavity and a lower mounting cavity, both of which are used to mount the electrical connection structure. The walls of the upper mounting cavity and the walls of the lower mounting cavity are provided with a plurality of first air holes extending through the drawer base. The first baffle is connected to the drawer base and is positioned between the upper and lower mounting cavities. The first baffle is provided with a gas exchange groove in the direction of arrangement of the upper and lower mounting cavities, the gas exchange groove connecting the upper and lower mounting cavities.

[0006] Through the above scheme, the present application uses a first baffle to separate the interior of the drawer base into an upper mounting cavity and a lower mounting cavity, and then uses a partition to separate the upper mounting cavity and the lower mounting cavity, so that multiple mounting parts for installing electrical connection structures are formed inside the drawer base, thereby ensuring that the basic functions of the drawer base can be realized.

[0007] A plurality of first air vents penetrating the drawer base are provided on the cavity walls of the upper mounting cavity and the cavity walls of the lower mounting cavity. This can increase the fluidity of air inside the drawer circuit breaker after the base assembly is installed on the drawer circuit breaker. When current passes through the electrical connection structure, the circulating air can carry away heat generated at the electrical connection structure, thereby increasing heat dissipation inside the drawer circuit breaker, reducing the probability of damage to internal components of the drawer circuit breaker due to excessive heat inside the drawer circuit breaker, and increasing the service life of the drawer circuit breaker.

[0008] Providing a gas exchange groove on the first baffle can increase the air circulation between the upper mounting cavity and the lower mounting cavity, thereby improving the heat dissipation effect inside the upper mounting cavity and the lower mounting cavity, and further improving the heat dissipation effect inside the drawer-type circuit breaker.

[0009] In a possible design, the gas exchange groove passes through the first baffle and the drawer base along a first direction. The first direction is the installation direction of the electrical connection structure, and the first direction is perpendicular to the arrangement direction.

[0010] Through the above solution, the gas exchange groove is made to pass through the first baffle and the drawer base along the first direction, which can increase the air circulation between the upper mounting cavity and the lower mounting cavity while increasing the heat dissipation inside the base assembly. This not only increases the heat dissipation inside the drawer-type circuit breaker, but also enables the gas exchange groove to achieve the effect of reuse.

[0011] In one possible design, the base assembly further includes a second baffle. The second baffle is connected to the drawer base and is disposed on a side of the lower mounting cavity away from the upper mounting cavity. A non-zero angle is formed between the second baffle and the drawer base.

[0012] Through the above solution, a second baffle is provided in the base assembly, and the second baffle can be used to support and block the electrical connection structure located in the lower mounting cavity. When the drawer-type circuit breaker shakes, the possibility of the electrical connection structure in the lower mounting cavity falling from the lower mounting cavity into the interior of the drawer-type circuit breaker can be reduced, thereby reducing the probability of a circuit breaker problem between the electrical connection structure in the lower mounting cavity and the internal components of the drawer-type circuit breaker, thereby increasing the reliability of the drawer-type circuit breaker.

[0013] In a possible design, the second baffle is provided with a plurality of second air holes along the arrangement direction.

[0014] Through the above scheme, a second air vent is set on the second baffle, which can increase the air circulation inside the base assembly, thereby improving the heat dissipation effect inside the base assembly. In addition, the second air vent is cooperated with the gas exchange groove. When the upper mounting cavity and the lower mounting cavity exchange gas, a part of the air can carry heat and flow from the second air vent to the outside of the base assembly.

[0015] In a possible design, the drawer-type circuit breaker further includes a drawer seat, which is provided with a mating portion. The drawer base is provided with a fixing portion, which is arranged on both sides of the drawer base and cooperates with the mating portion to fix the base assembly to the drawer seat.

[0016] Through the above solution, the present application provides a matching portion on the drawer seat and a second mounting portion on the drawer base. The second mounting portion cooperates with the matching portion so that the base assembly can be fixed on the drawer seat. This arrangement simplifies the connection method between the base assembly and the drawer seat, saves the assembly time of the drawer-type circuit breaker, and reduces the time cost required for the production of the drawer-type circuit breaker.

[0017] In a possible design, the mating portion protrudes from the drawer seat toward the base assembly so that a gap is formed between the drawer seat and the base assembly in a first direction. When the base assembly is fixed to the drawer seat, the upper mounting cavity is connected to the outside through the gap.

[0018] Through the above scheme, the gap can be connected to the upper mounting cavity. When current passes through the electrical connection structure, the heat in the upper mounting cavity is carried by the air and flows out along the gap to the outside of the base assembly. In addition, the air in the lower mounting cavity can also carry the heat generated by the electrical connection structure in the lower mounting cavity out of the gap to the outside of the base assembly. This can increase the heat dissipation effect inside the base assembly, thereby increasing the heat dissipation effect inside the drawer-type circuit breaker, reducing the probability of damage to the internal components of the drawer-type circuit breaker due to excessive heat inside the drawer-type circuit breaker, and increasing the service life of the drawer-type circuit breaker.

[0019] In one possible design, the base assembly further includes an isolation plate. The isolation plate includes a first plate and a second plate, the first plate and the second plate being connected to each other and having a non-zero angle. The first plate is fixedly connected to the drawer seat, and the second plate is blocked in the gap.

[0020] The above solution utilizes the isolation plate to reduce the probability of an operator accidentally contacting the electrical connection structure and causing an electric shock. Furthermore, when the isolation plate is mounted on the base assembly, the first plate is fixedly connected to the drawer base, while the second plate is connected to the first plate. This allows the second plate to be connected to the drawer base, thereby increasing the stability of the drawer base when mounted on the drawer base.

[0021] In a possible design, a third air hole is provided on the isolation plate, and the third air hole passes through the second plate.

[0022] Through the above scheme, due to the need for safety protection, an isolation plate can be set at the gap, and the gap can be blocked by the isolation plate. At this time, a third air hole is opened on the second plate. Under the premise of meeting the safety protection requirements, the heat dissipation inside the base assembly can be increased. The air in the upper mounting cavity can be exchanged with the outside air through the third air hole, and the air in the lower mounting cavity can also be exchanged with the outside air through the gas exchange groove and the third air hole.

[0023] In one possible design, the base assembly further includes a safety shield. The safety shield is disposed on a side of the mounting portion away from the drawer base and is provided with a wiring hole. The conductive member passes through the wiring hole and is connected to the electrical connection structure.

[0024] Through the above solution, the present application provides a safety shield on the side of the partition away from the drawer base to shield the electrical connection structure. The provision of wiring holes on the safety shield ensures the normal use of the drawer-type circuit breaker. When the circuit breaker body needs to be connected to an external power source via the electrical connection structure, the wiring terminals of the circuit breaker body only need to be connected to the electrical connection structure through the wiring holes. This arrangement can prevent the electrical connection structure from being exposed to the outside over a large area, reduce the probability of an operator accidentally touching the electrical connection structure and causing an electric shock, and improve the safety of the drawer-type circuit breaker.

[0025] In a second aspect, the present application provides a drawer-type circuit breaker, comprising a drawer base, an electrical connection structure, a circuit breaker body, and the base assembly described in the first aspect. The base assembly is connected to one side of the drawer base, and the circuit breaker body is slidably connected to the drawer base. The electrical connection structure is partially disposed within the base assembly, with one end of the electrical connection structure electrically connected to an external power source and the other end of the electrical connection structure electrically connected to the circuit breaker body.

[0026] Through the above solution, the present application provides multiple first air holes on the drawer base, thereby increasing air circulation between the interior and exterior of the drawer-type circuit breaker. Multiple gas exchange slots are provided on the partition, thereby increasing air circulation between the multiple mounting cavities. When current passes through the electrical connection structure and generates heat therein, air flowing through the first air holes and the gas exchange slots can remove some of the heat, thereby increasing heat dissipation within the drawer-type circuit breaker.

[0027] The beneficial effects of the drawer-type circuit breaker provided in the second aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of the drawer-type circuit breaker provided in an embodiment of the present application.

[0029] Figure 2 This is an assembly diagram of the base assembly and electrical connection structure provided in an embodiment of the present application.

[0030] Figure 3 A schematic structural diagram of the base assembly provided in an embodiment of the present application.

[0031] Figure 4 A schematic structural diagram of the isolation plate provided in an embodiment of the present application.

[0032] Figure 5 for Figure 2 Schematic diagram of the structure for assembling the safety baffle.

[0033] Description of reference numerals:

[0034] 100, drawer base; 110, upper mounting cavity; 120, lower mounting cavity; 130, first vent hole; 140, fixing portion;

[0035] 200, first baffle; 210, gas exchange tank;

[0036] 300, second baffle; 310, second vent hole;

[0037] 400, drawer seat; 410, mating portion;

[0038] 500, isolation plate; 510, first plate; 520, second plate; 530, third vent hole;

[0039] 600, safety baffle; 610, wiring hole;

[0040] 700. Electrical connection structure. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0043] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0044] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0046] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the static contact of a circuit breaker and the circuit breaker of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0047] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. "Connected" or "connected" in a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0050] Figure 1 This is a schematic diagram of the overall structure of the drawer-type circuit breaker provided in an embodiment of the present application.

[0051] like Figure 1 As shown, the present application provides a drawer-type circuit breaker, which includes a drawer base 400, an electrical connection structure 700, a circuit breaker body, and a base assembly. The base assembly is connected to one side of the drawer base 400, and the circuit breaker body is slidably connected to the drawer base 400. The electrical connection structure 700 is partially disposed within the base assembly, with one end of the electrical connection structure 700 electrically connected to an external power source and the other end of the electrical connection structure 700 electrically connected to the circuit breaker body.

[0052] The base assembly is fixedly connected to the drawer seat 400, and the base assembly is arranged on one side of the drawer seat 400. The structure of the base assembly will be described in detail below and will not be expanded here.

[0053] The electrical connection structure 700 passes through the base assembly, with a portion disposed inside the base assembly and a portion disposed outside the base assembly. One end of the electrical connection structure 700 disposed outside the base assembly is electrically connected to an external power source.

[0054] The circuit breaker body can be connected to the interior of the drawer 400 via a slide rail. When the circuit breaker body needs to be repaired or replaced, the circuit breaker body can be shaken out of the drawer 400 for operation. After the circuit breaker body is shaken into the drawer 400 via the slide rail, the circuit breaker body is electrically connected to the electrical connection structure 700.

[0055] To sum up, the circuit breaker body mentioned in this application can be shaken in or out of the drawer seat 400. When the circuit breaker body needs to be repaired or replaced, the circuit breaker body can be shaken out of the drawer seat 400 for operation. When the circuit breaker body is normal or after maintenance is completed, the circuit breaker body can be shaken into the drawer seat 400 and connected to the external conductive part through the electrical connection structure 700.

[0056] The base assembly mentioned in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0057] Figure 2 This is an assembly diagram of the base assembly and electrical connection structure provided in an embodiment of the present application. Figure 3 A schematic structural diagram of the base assembly provided in an embodiment of the present application.

[0058] like Figure 2 as well as Figure 3 As shown, the present application provides a base assembly for use in a drawer-type circuit breaker. The drawer-type circuit breaker includes an electrical connection structure 700, a drawer base 100, and a first baffle 200. The drawer base 100 includes an upper mounting cavity 110 and a lower mounting cavity 120, both of which are used to mount the electrical connection structure 700. The walls of the upper mounting cavity 110 and the lower mounting cavity 120 are provided with a plurality of first air holes 130 extending through the drawer base 100. The first baffle 200 is connected to the drawer base 100 and is located between the upper mounting cavity 110 and the lower mounting cavity 120. The first baffle 200 is provided with a gas exchange groove 210 in the direction of arrangement of the upper mounting cavity 110 and the lower mounting cavity 120, connecting the upper mounting cavity 110 and the lower mounting cavity 120.

[0059] The drawer base 100 may include a bottom plate and two side plates, wherein the two side plates are respectively disposed on opposite sides of the bottom plate, so that an installation space may be formed between the two side plates and the bottom plate.

[0060] The first baffle 200 can be in the shape of a long strip, and the two ends of the first baffle 200 can be connected to the two side plates respectively, and the side wall of the first baffle 200 close to the bottom plate can be connected to the bottom plate. In this way, the installation space can be divided into an upper installation cavity 110 and a lower installation cavity 120 by the first baffle 200.

[0061] The drawer base 100 may further include a partition plate, which may be arranged crosswise with the bottom plate. The partition plate may separate the upper mounting cavity 110 and the lower mounting cavity 120 into multiple mounting portions, each of which may be provided with an electrical connection structure 700, thereby meeting the installation requirements of multiple electrical connection structures 700.

[0062] Based on the description that the drawer base 100 includes a bottom plate and two side plates, the bottom plate will serve as the cavity wall of the upper mounting cavity 110 and the cavity bottom of the lower mounting cavity 120. Based on this, the first air vents provided on the cavity wall of the upper mounting cavity 110 and the cavity wall of the lower mounting cavity 120 can both be located on the bottom plate.

[0063] A plurality of first air vents 130 are provided through the walls of the upper mounting cavity 110 and the lower mounting cavity 120 along the installation direction of the electrical connection structure 700. This arrangement allows both the upper mounting cavity 110 and the lower mounting cavity 120 to communicate with the external environment. When the base assembly is installed in a drawer-type circuit breaker, the interior of the drawer-type circuit breaker can communicate with the outside, thereby achieving the effect of gas exchange between the inside and outside of the drawer-type circuit breaker.

[0064] Since the first baffle 200 separates the upper mounting cavity 110 from the lower mounting cavity 120, which reduces heat dissipation within the drawer base 100, the present application further provides a gas exchange groove 210 on the first baffle 200, and the gas exchange groove 210 extends through the first baffle 200 along the arrangement direction of the upper mounting cavity 110 and the lower mounting cavity 120. In this way, the upper mounting cavity 110 and the lower mounting cavity 120 can be connected, thereby improving the heat dissipation effect within the drawer base 100.

[0065] The drawer base 100 is divided into multiple mounting sections by partitions, with the upper mounting cavity 110 and the lower mounting cavity 120 separated. To ensure effective heat dissipation, gas exchange grooves 210 can be provided on the first baffle 200 between two adjacent mounting sections. The provision of the first baffle 200 and the partitions can reduce the risk of short circuits between the multiple electrical connection structures 700, thereby increasing the reliability of the drawer-type circuit breaker.

[0066] To sum up, the present application uses a first baffle 200 to separate the interior of the drawer base 100 into an upper mounting cavity 110 and a lower mounting cavity 120, and then uses a partition to separate the upper mounting cavity 110 and the lower mounting cavity 120, so that a plurality of mounting parts for installing the electrical connection structure 700 are formed inside the drawer base 100, so that the basic functions of the drawer base 100 can be realized.

[0067] A plurality of first air vents 130 extending through the drawer base 100 are provided in the walls of the upper mounting cavity 110 and the lower mounting cavity 120. These holes increase air flow within the drawer base 100 after the base assembly is installed in the drawer circuit breaker. When current passes through the electrical connection structure 700, the circulating air dissipates heat generated therein, thereby improving heat dissipation within the drawer circuit breaker. This reduces the likelihood of damage to internal components of the drawer circuit breaker due to excessive heat buildup, thereby increasing the lifespan of the drawer circuit breaker.

[0068] The gas exchange groove 210 is provided on the first baffle 200, which can increase the air circulation between the upper mounting cavity 110 and the lower mounting cavity 120, thereby improving the heat dissipation effect inside the upper mounting cavity 110 and the lower mounting cavity 120, and further improving the heat dissipation effect inside the drawer-type circuit breaker.

[0069] Please continue to refer to Figures 1 to 3 As shown, the gas exchange groove 210 passes through the first baffle 200 and the drawer base 100 along a first direction. The first direction is the installation direction of the electrical connection structure 700, and the first direction is perpendicular to the arrangement direction of the upper installation cavity 110 and the lower installation cavity 120.

[0070] The gas exchange groove 210 can penetrate the first baffle 200 along the arrangement direction of the upper mounting cavity 110 and the lower mounting cavity 120, and penetrate the first baffle 200 and the drawer base 100 along the installation direction of the electrical connection structure 700. In this way, when air circulates between the upper mounting cavity 110 and the lower mounting cavity 120, a portion of the air can carry heat and flow from the interior of the base assembly to the exterior of the base assembly.

[0071] Through the above-mentioned setting, the gas exchange groove 210 passes through the first baffle 200 and the drawer base 100 along the first direction, which can increase the air circulation between the upper mounting cavity 110 and the lower mounting cavity 120 while increasing the heat dissipation inside the base assembly. This not only increases the heat dissipation inside the drawer-type circuit breaker, but also enables the gas exchange groove 210 to achieve the effect of reuse.

[0072] like Figure 2 As shown, the base assembly further includes a second baffle 300. The second baffle 300 is connected to the drawer base 100 and is disposed on a side of the lower mounting cavity 120 away from the upper mounting cavity 110. A non-zero angle is formed between the second baffle 300 and the drawer base 100.

[0073] When the base assembly is installed on the drawer type circuit breaker, the position between the upper mounting cavity 110 and the lower mounting cavity 120 can be as follows: Figure 2 as well as Figure 3The upper mounting cavity 110 and the lower mounting cavity 120 are both provided with an electrical connection structure 700 . When the base assembly shakes, the electrical connection structure 700 may fall out of the upper mounting cavity 110 and / or the lower mounting cavity 120 .

[0074] Because the first baffle 200 is provided between the upper mounting cavity 110 and the lower mounting cavity 120, when the electrical connection structure 700 falls from the upper mounting cavity 110, it is blocked by the first baffle 200. This reduces the possibility of the electrical connection structure 700 located in the upper mounting cavity 110 falling into the lower mounting cavity 120 and contacting the electrical connection structure 700 located in the lower mounting cavity 120, thereby causing a short circuit, thereby improving the reliability of the base assembly.

[0075] The second baffle 300 has the same function as the first baffle 200 and can reduce the possibility of the electrical connection structure 700 located in the lower mounting cavity 120 falling. The non-zero angle between the second baffle 300 and the drawer base 100 can be 60°, 85°, or 90°, etc.

[0076] A second baffle 300 is disposed within the base assembly, with a non-zero angle formed between the second baffle 300 and the drawer base 100. This baffle 300 supports and blocks the electrical connection structure 700 located within the lower mounting cavity 120. This reduces the likelihood of the electrical connection structure 700 falling out of the lower mounting cavity 120 when the drawer-type circuit breaker shakes. This further reduces the probability of a disconnection between the electrical connection structure 700 within the lower mounting cavity 120 and the internal components of the drawer-type circuit breaker, thereby increasing the reliability of the drawer-type circuit breaker.

[0077] Please continue to refer to Figure 2 as well as Figure 3 As shown, the second baffle 300 is provided with a plurality of second vent holes 310 along the arrangement direction of the upper mounting cavity 110 and the lower mounting cavity 120 .

[0078] The second vent hole 310 can penetrate the second baffle 300 along the arrangement direction of the upper mounting cavity 110 and the lower mounting cavity 120. The second vent hole 310 can be integrally formed with the second baffle 300, or the second vent hole 310 can be provided on the second baffle 300 after the second baffle 300 is formed by cutting or engraving.

[0079] Through the above-mentioned setting, a second air hole 310 is set on the second baffle 300, which can increase the circulation of air inside the base assembly, thereby improving the heat dissipation effect inside the base assembly. In addition, by cooperating with the gas exchange groove 210, when the upper installation cavity 110 and the lower installation cavity 120 exchange gas, a part of the air can carry heat from the second air hole 310 to the outside of the base assembly.

[0080] like Figure 1 as well as Figure 3 As shown, the drawer-type circuit breaker further includes a drawer seat 400, which is provided with a mating portion 410. The drawer base 100 is provided with a fixing portion 140, which is provided on both sides of the drawer base 100. The fixing portion 140 cooperates with the mating portion 410 to fix the base assembly to the drawer seat 400.

[0081] The drawer base 400 may be a "mouth"-shaped structure formed by four plate-like structures connected end to end. The mating portion 410 may be a plate-like structure disposed on the drawer base 100, facing the drawer base 100. The mating portion 410 may include a first mating portion 410 and a second mating portion 410, and the first mating portion 410 and the second mating portion 410 may be disposed on two opposing plate-like structures of the drawer base 400, respectively.

[0082] The second mounting portion may be a plate-like structure extending from both sides of the side plate of the drawer base 100 , and the second mounting portions on both sides of the drawer base 100 may correspond to the first matching portion 410 and the second matching portion 410 , respectively.

[0083] There are many ways to fix the base assembly to the drawer seat 400. For example, the mating portion 410 can be provided with a threaded hole, and the second mounting portion can be provided with a through hole, and a bolt is passed through the through hole and fixedly connected to the threaded hole. Alternatively, both the mating portion 410 and the second mounting portion are provided with through holes, and a bolt is passed through the through holes provided on the mating portion 410 and the second mounting portion, and then the bolt is tightened with a nut. Alternatively, the mating portion 410 is provided with a clamping block, and the second mounting portion is provided with a clamping groove, and the base assembly is clamped to the drawer seat 400. This application does not limit the connection method between the base assembly and the drawer seat 400. It is only necessary to ensure that the base assembly will not fall off the drawer seat 400 after being connected to the drawer seat 400.

[0084] Through the above arrangement, the present application provides a mating portion 410 on the drawer seat 400 and a second mounting portion on the drawer base 100. The second mounting portion cooperates with the mating portion 410 so that the base assembly can be fixed on the drawer seat 400. This arrangement simplifies the connection method between the base assembly and the drawer seat 400, saves the assembly time of the drawer-type circuit breaker, and reduces the time cost required for the production of the drawer-type circuit breaker.

[0085] Please continue to refer to Figure 1 as well as Figure 3 As shown, the mating portion 410 protrudes from the drawer seat 400 toward the base assembly, so that a gap is formed between the drawer seat 400 and the base assembly in the first direction. When the base assembly is fixed to the drawer seat 400, the upper mounting cavity 110 is connected to the outside through the gap.

[0086] When the drawer base 100 is mounted on the drawer seat 400 , a gap is created between the drawer base 100 and the drawer seat 400 because the engaging portion 410 protrudes from the drawer seat 400 toward the base assembly.

[0087] In the case where the upper mounting cavity 110 is connected to the outside through the gap, when current passes through the electrical connection structure 700 , heat in the upper mounting cavity 110 can be carried by air and flow out along the gap to the outside of the base assembly.

[0088] Furthermore, the air within the lower mounting cavity 120 can also carry heat generated by the electrical connection structure 700 within the lower mounting cavity 120 out of the gap to the outside of the base assembly. This improves the heat dissipation within the base assembly, and thus within the drawer-type circuit breaker, reducing the likelihood of damage to the drawer-type circuit breaker's internal components due to excessive heat, thereby increasing the lifespan of the drawer-type circuit breaker.

[0089] Figure 4 A schematic structural diagram of the isolation plate provided in an embodiment of the present application.

[0090] like Figure 2 as well as Figure 4 As shown, the base assembly further includes an isolation panel 500. The isolation panel 500 includes a first panel 510 and a second panel 520, which are interconnected and have a non-zero angle. The first panel 510 is fixedly connected to the drawer seat 400, and the second panel 520 is blocked in the gap.

[0091] The provision of the isolation plate 500 can increase the safety of the drawer-type circuit breaker and reduce the probability of electric shock caused by the operator touching the electrical connection structure 700 located in the upper mounting cavity 110 through the gap when using the drawer-type circuit breaker.

[0092] The first plate 510 and the second plate 520 may both be plate-shaped structures, and the angle between the first plate 510 and the second plate 520 may be 70°, 83°, or 90°, etc. When the isolation plate 500 is mounted on the base assembly, the second plate 520 may block the gap.

[0093] The isolation plate 500 can be made of an insulating material or a metal material. It should be noted that if a metal material is used to make the isolation plate 500, sufficient creepage distance must be left between the isolation plate 500 and the electrical connection structure 700 to avoid short circuits.

[0094] The above arrangement, utilizing the isolation plate 500, can reduce the probability of an operator accidentally contacting the electrical connection structure 700 through the gap and causing an electric shock. Furthermore, when the isolation plate 500 is installed on the base assembly, the first plate 510 is fixedly connected to the drawer base 400, and the second plate 520 is connected to the first plate 510. This allows the second plate 520 to be connected to the drawer base 100, thereby increasing the stability of the drawer base 100 when installed on the drawer base 400.

[0095] Please continue to refer to Figure 2 as well as Figure 4 As shown, in order to increase the air circulation inside the base assembly, the present application further provides a third air hole 530 on the isolation plate 500 , and the third air hole 530 passes through the second plate 520 .

[0096] The third air hole 530 may be a through hole provided on the second plate 520 . The third air hole 530 may be integrally formed with the second plate 520 . The third air hole 530 may also be provided on the second plate 520 by grooving or carving after the second plate 520 is formed.

[0097] To sum up, due to the need for safety protection, an isolation plate 500 can be set at the gap, and the gap can be blocked by the isolation plate 500. At this time, a third air hole 530 is opened on the second plate 520. The heat dissipation inside the base assembly can be increased while meeting the safety protection requirements. The air in the upper mounting cavity 110 can be exchanged with the outside air through the third air hole 530, and the air in the lower mounting cavity 120 can also be exchanged with the outside air through the gas exchange groove 210 and the third air hole 530.

[0098] Figure 5 for Figure 2 Schematic diagram of the structure for assembling the safety baffle.

[0099] like Figure 5 As shown, the base assembly further includes a safety baffle 600. The safety baffle 600 is disposed on a side of the mounting portion away from the drawer base 100 and is provided with a wiring hole 610. The conductive member passes through the wiring hole 610 and is connected to the electrical connection structure 700.

[0100] The safety shield 600 can be a plate-like structure, positioned on the side of the partition away from the drawer base 100, that is, the safety shield 600 is positioned within the drawer seat 400. The wiring hole 610 can be a through-hole provided in the safety shield 600, with the location of the wiring hole 610 corresponding to the location of the electrical connection structure 700. The wiring hole 610 can be integrally formed with the safety shield 600, or it can be provided in the safety shield 600 after the safety shield 600 is formed by carving or slotting.

[0101] Through the above arrangement, the present application provides a safety shield 600 on the side of the partition away from the drawer base 100 to shield the electrical connection structure 700. The provision of a wiring hole 610 on the safety shield 600 ensures the normal use of the drawer-type circuit breaker. When the circuit breaker body needs to be connected to an external power source via the electrical connection structure 700, the wiring terminals of the circuit breaker body only need to be connected to the electrical connection structure 700 through the wiring hole 610. This arrangement prevents the electrical connection structure 700 from being exposed to the outside over a large area, reduces the probability of an operator accidentally touching the electrical connection structure 700 and suffering an electric shock, and improves the safety of the drawer-type circuit breaker.

Claims

1. A base assembly, applied to a drawer-type circuit breaker, the drawer-type circuit breaker including an electrical connection structure, characterized in that: The base assembly comprises: A drawer base, the drawer base comprising an upper mounting cavity and a lower mounting cavity, both of which are used to mount the electrical connection structure, and the cavity walls of the upper mounting cavity and the lower mounting cavity are provided with a plurality of first vent holes penetrating the drawer base; The first baffle is connected to the drawer base, and the first baffle is located between the upper mounting cavity and the lower mounting cavity; the first baffle is provided with a gas exchange groove in the arrangement direction of the upper mounting cavity and the lower mounting cavity, and the gas exchange groove connects the upper mounting cavity and the lower mounting cavity.

2. The base assembly according to claim 1, wherein: The gas exchange groove passes through the first baffle and the drawer base along a first direction; The first direction is an installation direction of the electrical connection structure, and the first direction is perpendicular to the arrangement direction.

3. The base assembly according to claim 1, wherein: The base assembly further includes a second baffle; The second baffle is connected to the drawer base, and the second baffle is arranged on a side of the lower mounting cavity away from the upper mounting cavity; A non-zero angle is formed between the second baffle and the drawer base.

4. The base assembly according to claim 3, wherein: The second baffle is provided with a plurality of second air holes along the arrangement direction.

5. The base assembly according to claim 2, wherein: The drawer-type circuit breaker further includes a drawer seat, and the drawer seat is provided with a matching portion; The drawer base is provided with a fixing portion, which is arranged on both sides of the drawer base. The fixing portion cooperates with the matching portion to fix the base assembly to the drawer seat.

6. The base assembly according to claim 5, wherein: The matching portion protrudes from the drawer seat toward the base assembly so that a gap is formed between the drawer seat and the base assembly in the first direction. When the base assembly is fixed to the drawer seat, the upper mounting cavity is connected to the outside through the gap.

7. The base assembly according to claim 6, wherein: The base assembly also includes an isolation plate; The isolation plate includes a first plate and a second plate, wherein the first plate and the second plate are connected to each other and have a non-zero angle; The first plate is fixedly connected to the drawer seat, and the second plate is blocked in the gap.

8. The base assembly according to claim 7, wherein: A third air vent is provided on the isolation plate, and the third air vent passes through the second plate.

9. The base assembly according to claim 1, wherein: The base assembly also includes a safety baffle; The safety baffle is arranged on a side of the first baffle away from the drawer base, and the safety baffle is provided with a wiring hole; The conductive member passes through the wiring hole and is connected to the electrical connection structure.

10. A drawer type circuit breaker, characterized in that: The invention comprises a drawer seat, an electrical connection structure, a circuit breaker body and a base assembly according to any one of claims 1 to 9; The base assembly is connected to one side of the drawer seat, and the circuit breaker body is slidably connected to the drawer seat; The electrical connection structure is partially disposed in the base assembly, one end of the electrical connection structure is electrically connected to an external power source, and the other end of the electrical connection structure is electrically connected to the circuit breaker body.

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