Drawer seat and drawer type circuit breaker

Abstract

The utility model provides a drawer base and a drawer type circuit breaker, and belongs to the technical field of electrical equipment. The utility model provides a drawer seat. The drawer seat comprises a shell, a secondary wiring top plate, a secondary wiring terminal, a transmission part and a cover body, a through groove is formed in the side wall of the shell. And the end part of the secondary wiring top plate is arranged in the through groove. And the secondary wiring terminal is arranged on the shell. The transmission piece is arranged on the inner wall of the shell and opposite to the end portion of the secondary wiring top plate, and the transmission piece can drive the secondary wiring top plate to move. The cover body is arranged on the outer wall of the shell and covers the through groove. According to the invention, the cover body is arranged on the drawer seat, and the cover body is used for protecting the movement of the transmission part on the movement path of the transmission part, so that the influence of the external environment on the movement of the transmission part can be reduced, and the probability that the secondary wiring terminal cannot be separated from the circuit breaker body due to the clamping stagnation of the transmission part can be reduced. And the use reliability of the drawer type circuit breaker is improved.

Description

Technical Field

[0001] This application relates to the technical field of electrical equipment, and particularly to a drawer base and a draw-out circuit breaker. Background Art

[0002] A draw-out circuit breaker is a circuit breaker with a modular design, used for protecting and controlling circuits. A draw-out circuit breaker generally includes a circuit breaker body and a drawer base. The circuit breaker body is slidably connected to the drawer base and can be rocked out from the drawer base.

[0003] In the prior art, when rocking out the circuit breaker body from the drawer base, there is often a problem that the circuit breaker body gets stuck in the drawer base and cannot be taken out. Therefore, there is an urgent need for a drawer base and a draw-out circuit breaker. Summary of the Utility Model

[0004] This application provides a drawer base and a draw-out circuit breaker to reduce the difficulty of taking out the circuit breaker body from the drawer base.

[0005] In a first aspect, this application provides a drawer base applied to a draw-out circuit breaker. The draw-out circuit breaker includes a circuit breaker body. The drawer base includes: a housing, a secondary wiring top plate, secondary wiring terminals, a transmission member, and a cover.

[0006] An installation space is provided inside the housing. The circuit breaker body is arranged in the installation space. A through groove is provided on the side wall of the housing. The end of the secondary wiring top plate is installed in the through groove. The secondary wiring terminals are arranged on the housing. The secondary wiring terminals include wiring ends. The wiring ends are located in the installation space and are connected to the circuit breaker body. The transmission member is slidably arranged on the inner wall of the housing and is opposite to the end of the secondary wiring top plate in position. The transmission member can drive the secondary wiring top plate to move, so that the secondary wiring top plate drives the wiring ends to move away from the circuit breaker body, so as to separate the secondary wiring terminals from the circuit breaker body. The cover is arranged on the outer wall of the housing, and the cover covers the through groove.

[0007] Through the above solution, this application provides a through groove on the side wall of the housing, and the secondary wiring top plate can be arranged on the housing by using the through groove. The secondary wiring top plate can drive the secondary wiring terminals to separate from the circuit breaker body through cooperation with the transmission member, so that the circuit breaker body can be smoothly taken out from the drawer base.

[0008] By arranging a cover on the outer wall of the housing and covering the through groove with the cover, the cover can play a role in shielding the through groove, reducing the probability of foreign objects falling into the interior of the drawer base through the through groove. In this way, it can play a role in protecting the transmission member slidably arranged on the inner wall of the housing, reducing the probability of the problem that the movement of the transmission member is stuck due to the presence of foreign objects, thereby affecting the taking out of the circuit breaker body from the drawer base.

[0009] In a possible design, the cover body includes a bottom plate and a side plate. The bottom plate is parallel to the side wall of the housing, and the side plate is perpendicular to the bottom plate. The bottom plate is used to block the through groove in the opening direction of the through groove, and the side plate is used to block the through groove in the moving direction of the transmission member.

[0010] Through the above solution, when the cover body is installed on the side wall of the housing, since the bottom plate is parallel to the side wall of the housing, the bottom plate can block the through groove in the opening direction of the through groove, reducing the probability of foreign objects falling into the drawer seat from the through groove. The side plate is perpendicular to the bottom plate, which not only prevents the cover body from interfering with the end of the secondary wiring top plate during installation, but also the perpendicularly arranged side plate can block the through groove in the moving direction of the transmission member, reducing the probability of foreign objects falling into the through groove from the gap between the bottom plate and the side wall of the housing.

[0011] In a possible design, the side plate includes a first plate, a second plate, and a third plate. The first plate and the third plate are parallel to each other, and the second plate is perpendicular to both the first plate and the third plate.

[0012] Through the above solution, since the first plate and the third plate are parallel to each other and the side plate is perpendicular to the bottom plate, when the cover body covers the through groove, the first plate and the third plate can simultaneously block the through groove in the moving direction of the transmission member, while the second plate is perpendicular to both the first plate and the third plate, enabling the second plate to block the through groove in the installation direction of the circuit breaker body. In this way, the probability of foreign objects falling into the drawer seat from the through groove can be reduced, thereby reducing the probability of the transmission member getting stuck due to the presence of foreign objects and affecting the removal of the circuit breaker body from the drawer seat.

[0013] In a possible design, the drawer seat further includes a secondary wiring terminal cover. The housing is provided with a first mounting portion that protrudes from the side wall of the housing. The first mounting portion is provided with a first mounting hole, and the secondary wiring terminal cover is fixed to the first mounting hole by bolts. There is a gap between the second plate and the first plate, and a second mounting hole is provided near the second plate close to the first plate. The first mounting portion and a part of the secondary wiring terminal cover are located in the gap, and the second mounting hole is opposite to the first mounting hole in position. The cover body is fixed to the housing by bolts.

[0014] Through the above solution, the setting of the secondary wiring terminal cover can protect the secondary wiring top plate and the wiring ends of the secondary wiring terminals, reducing the possibility of the secondary wiring top plate and the wiring ends of the secondary wiring terminals being directly exposed to the air, and increasing the service life of the secondary wiring top plate and the wiring ends of the secondary wiring terminals.

[0015] Since the cover body needs to be disposed over the through groove, and the first mounting portion is disposed close to the through groove, the gap can be provided to make way for the end portion of the secondary wiring terminal cover and the first mounting portion when the cover body is disposed over the through groove, so that the cover body can more effectively block the through groove, thereby reducing the probability of foreign objects falling into the drawer base from the through groove.

[0016] By mating the second mounting holes provided on the second plate with the threaded holes provided on the first mounting portion and using bolts to fix the cover body to the side wall of the housing, not only can the first mounting portion achieve the effect of reuse, but also the setting of the mounting portion specifically for fixing the cover body can be reduced, saving the use of materials and reducing the production cost of the drawer base.

[0017] In a possible design, the housing is provided with a second mounting portion that protrudes from the side wall of the housing. The drawer base further includes a spring, one end of the spring is connected to the second mounting portion, and the other end of the spring is connected to the secondary wiring top plate.

[0018] Through the above solution, the second mounting portion is disposed on the side wall of the housing, which can occupy less space inside the housing without affecting the function of the second mounting portion. Connecting the second mounting portion and the secondary wiring top plate with a spring can assist the movement of the secondary wiring top plate in the direction towards the circuit breaker body, making it easier for the secondary wiring top plate to drive the wiring terminal to connect with the circuit breaker body when connecting, and reducing the usage difficulty of the drawer-type circuit breaker.

[0019] In a possible design, the second plate includes a first sub-plate and a second sub-plate, and the first sub-plate and the second sub-plate are offset in the installation direction of the circuit breaker body. The second mounting portion is located in the first relief groove formed after the offset of the first sub-plate and the second sub-plate.

[0020] Through the above solution, the first sub-plate and the second sub-plate are offset in the installation direction of the circuit breaker body to form a first relief groove, which can make way for the second mounting portion when the cover body is disposed over the through groove, reducing the occurrence of interference problems between the second mounting portion and the cover body when the cover body is disposed over the through groove, and increasing the reliability of the cover body installation. In a possible design, the through groove includes a first groove and a second groove, and the first groove and the second groove are communicated. The first groove extends along the moving direction of the transmission member, and the second groove extends along the installation direction of the circuit breaker body. The first groove is used for the transmission member to drive the secondary wiring top plate to move, and the second groove is used for the circuit breaker body to drive the secondary wiring top plate to move. The cover body is disposed over the first groove and the second groove.

[0021] Through the above solution, the first groove extends along the moving direction of the transmission member, and the transmission member can drive the end of the secondary wiring top plate to move in the first groove. The second groove extends along the installation direction of the circuit breaker body, and the circuit breaker body can drive the end of the secondary wiring top plate to move in the second groove. The form in which the first groove and the second groove are connected and partially overlap can reduce the area of the through groove compared to the form in which the through groove is set as a large groove that completely includes the first groove and the second groove, thereby reducing the probability of foreign objects entering the inside of the drawer base through the through groove.

[0022] The form in which the first groove and the second groove are connected and partially overlap can also reduce the volume of the cover body, and a smaller cover body can be used to block the through groove. This can not only reduce the volume occupied by the drawer base during installation, but also reduce the manufacturing cost of the cover body.

[0023] In a possible design, both the first plate and the third plate are perpendicular to the second plate, so that a second relief groove is formed on the side of the first plate and the third plate away from the second plate. The second relief groove can make way for the movement of the secondary wiring top plate.

[0024] Through the above solution, since the second groove extends along the moving direction of the circuit breaker body and the length of the second groove is relatively long, and there are other components on the side wall of the housing. In order to make way for the end of the secondary wiring top plate and other components arranged on the side wall of the housing, the second relief groove is provided on the side plate. The setting of the second relief groove can also reduce the production cost of the cover body.

[0025] In a possible design, a limiting member is provided on the inner wall of the housing, and the transmission member is slidably arranged in the limiting member. The limiting member is used to limit the movement of the transmission member along the installation direction of the circuit breaker body.

[0026] Through the above solution, the transmission member is only used to drive the secondary wiring top plate to move, so that the secondary wiring top plate drives the wiring terminal to be connected to the circuit breaker body. After the wiring terminal is connected to the circuit breaker body, the secondary wiring top plate still needs to continue to move into the installation space along with the circuit breaker body. At this time, the setting of the limiting member can limit the movement of the transmission member, reducing the probability of problems such as misalignment of the transmission member caused by the secondary wiring top plate driving the transmission member to move, and increasing the use reliability of the drawer-type circuit breaker.

[0027] In a second aspect, the present application provides a drawer-type circuit breaker, including a circuit breaker body and the drawer base mentioned in the first aspect above. The circuit breaker body is slidably arranged in the drawer base.

[0028] Through the above solution, the present application provides a cover on the drawer seat, and uses the cover to protect the movement of the transmission part on the movement path of the transmission part, so as to reduce the influence of the external environment on the movement of the transmission part, thereby reducing the probability of problems caused by the transmission part being stuck and resulting in the inability of the secondary wiring terminal to be separated from the circuit breaker body. The use reliability of the drawer-type circuit breaker is improved.

[0029] For the drawer-type circuit breaker provided in the second aspect above, the beneficial effects can refer to the beneficial effects brought by the first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure of the drawer-type circuit breaker provided by an embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the overall structure of the drawer seat provided by an embodiment of the present application.

[0032] Figure 3 It is a partial structure schematic diagram of the drawer seat provided by an embodiment of the present application.

[0033] Figure 4 It is Figure 3 an enlarged view of part A in

[0034] Figure 5 It is a schematic diagram of the structure of the housing provided by an embodiment of the present application.

[0035] Figure 6 It is Figure 5 an enlarged view of part C in

[0036] Figure 7 It is a schematic diagram of the structure of the cover body provided by an embodiment of the present application from one perspective.

[0037] Figure 8 It is a schematic diagram of the structure of the cover body provided by an embodiment of the present application from another perspective.

[0038] Figure 9 It is Figure 2 a schematic diagram of the structure of the secondary wiring terminal cover added.

[0039] Figure 10 It is Figure 3 an enlarged view of part B in

[0040] Description of the Reference Numerals:

[0041] 100, housing; 110, through groove; 111, first groove; 112, second groove; 120, first mounting portion; 121, first mounting hole; 130, second mounting portion; 140, limiting member;

[0042] 200. Secondary wiring top plate

[0043] 300. Secondary wiring terminal

[0044] 400. Transmission part

[0045] 500. Cover body; 510. Bottom plate; 520. Side plate; 521. First plate; 522. Second plate; 523. Third plate; 524. Gap; 525. Second mounting hole; 526. First relief groove; 530. Second relief groove

[0046] 600. Secondary wiring terminal cover

[0047] 700. Circuit breaker body Detailed implementation manners

[0048] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application

[0050] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the existence of a plurality

[0051] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments

[0052] As used herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0053] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the static contact of a circuit breaker and the specific structure of the circuit breaker in this application. For example, in the description of this application, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of this application.

[0054] In addition, terms such as "first", "second", etc. in the description of this application and the claims 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 of such features.

[0055] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a screw, bolt or other fixing member; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a welded, bonded or integrally formed connection. The "connection" or "connection" of a circuit structure may refer to not only a physical connection but also an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or it may be indirectly connected through at least one intermediate element, as long as the circuit is connected. It may also be the communication inside two elements; a signal connection may refer to not only a signal connection through a circuit but also a signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings.

[0057] Figure 1 This is a schematic diagram of the overall structure of the draw-out circuit breaker provided by the embodiment of the present application. Figure 2 This is a schematic diagram of the overall structure of the draw-out base provided by the embodiment of the present application. As Figure 1 and Figure 2 shown, the present application provides a draw-out circuit breaker, which includes a circuit breaker body and a draw-out base. The circuit breaker body is slidably disposed in the draw-out base.

[0058] The draw-out circuit breaker is a special low-voltage circuit breaker. Its design feature is that the circuit breaker body 700 can freely enter and exit the draw-out base of the draw-out circuit breaker like a drawer. The draw-out circuit breaker has the advantages of convenient maintenance, high flexibility, and space saving. The draw-out circuit breaker is widely used in factories, commercial buildings, residential areas, etc. as an important protection device for low-voltage distribution networks.

[0059] The draw-out base, also known as the draw-out unit or draw-out rack, is an important component for installing the circuit breaker body 700 in the control cabinet or distribution box. The draw-out base can make the installation, maintenance, and replacement of the circuit breaker body 700 more convenient.

[0060] The circuit breaker body 700 is slidably connected in the draw-out base so that the circuit breaker body 700 can be individually rocked out of the draw-out base for repair, replacement, or maintenance without shutting down the entire circuit.

[0061] The process of rocking out the circuit breaker body 700 from the draw-out base includes two stages. In the first stage, the circuit breaker body 700 is separated from the bundle-shaped chuck in the draw-out base. In the second stage, the circuit breaker body 700 is separated from the secondary wiring terminal 300. Only when the circuit breaker body 700 is completely separated from both the bundle-shaped chuck and the secondary wiring terminal 300 can the circuit breaker body 700 be taken out of the draw-out base.

[0062] In the second stage, when separating the circuit breaker body 700 from the secondary wiring terminal 300, it is necessary to use the transmission member 400 to drive the secondary wiring terminal 300 to move in a direction away from the circuit breaker body 700.

[0063] In summary, the present application provides a cover body 500 on the draw-out base to protect the movement of the transmission member 400 on the movement path of the transmission member 400. This can reduce the influence of the external environment on the movement of the transmission member 400, thereby reducing the probability of the problem that the secondary wiring terminal 300 cannot be separated from the circuit breaker body 700 due to the jamming of the transmission member 400. The use reliability of the draw-out circuit breaker is improved.

[0064] The drawer base provided by the present application will be explained in detail below with reference to the accompanying drawings.

[0065] Figure 3 It is a partial structural schematic diagram of the drawer base provided by the embodiment of the present application. Figure 4 It is Figure 3 an enlarged view of part A in Figure 5 It is a structural schematic diagram of the housing provided by the embodiment of the present application. Figure 6 It is Figure 5 an enlarged view of part C in Figures 3 to 6 As shown, the present application provides a drawer base, which is applied to a drawer-type circuit breaker. The drawer-type circuit breaker includes a circuit breaker body 700. The drawer base includes: a housing 100, a secondary wiring top plate 200, secondary wiring terminals 300, a transmission member 400, and a cover body 500.

[0066] An installation space is provided inside the housing 100, and the circuit breaker body 700 is arranged in the installation space. A through groove 110 is provided on the side wall of the housing 100. The end of the secondary wiring top plate 200 is installed in the through groove 110. The secondary wiring terminals 300 are arranged on the housing 100. The secondary wiring terminals 300 include wiring ends, and the wiring ends are located in the installation space and are connected to the circuit breaker body 700. The transmission member 400 is slidably arranged on the inner wall of the housing 100 and is opposite to the end of the secondary wiring top plate 200 in position. The transmission member 400 can drive the secondary wiring top plate 200 to move, so that the secondary wiring top plate 200 drives the wiring end to move away from the circuit breaker body 700, so as to separate the secondary wiring terminals 300 from the circuit breaker body 700. The cover body 500 is arranged on the outer wall of the housing 100, and the cover body 500 covers the through groove 110.

[0067] The housing 100 can be composed of four plate-like structures connected end to end. Openings are provided on both sides of the housing 100. A drawer base is fixedly provided on the first side of the housing 100, and the other side of the housing 100 is for the circuit breaker body 700 to enter and exit.

[0068] Through grooves 110 are provided on two opposite side walls of the housing 100. The secondary wiring top plate 200 has two ends opposite in position. The two ends of the secondary wiring top plate 200 are respectively installed in the through grooves 110 provided on the two side walls, and the two ends of the secondary wiring top plate 200 can be in sliding contact with the groove walls of the two through grooves 110.

[0069] The secondary wiring terminals 300 are fixedly arranged on the housing 100, and the wiring ends are fixedly arranged on the side wall of the secondary wiring top plate 200 facing the installation space. The wiring ends and the secondary wiring terminals 300 can be connected by a flexible wire.

[0070] The transmission member 400 can be in a plate-like structure. One end of the transmission member 400 can be connected to the driving structure of the drawer base, and the other end of the transmission member 400 can be opposite to the end position of the secondary wiring top plate 200 and is movably connected to the end of the secondary wiring top plate 200. Since the installation space of the drawer base is limited and the circuit breaker body 700 needs to be installed in this installation space, in order not to occupy too much installation space, the transmission member 400 can be slidably arranged on the inner wall of the housing 100.

[0071] The cover body 500 can be in a "concave" structure with a space inside. When the cover body 500 covers the through groove 110, the space inside the cover body 500 corresponds to the through groove 110.

[0072] Due to the limited thickness of the housing 100, the through groove 110 will penetrate the side wall of the housing 100 during setting, so that the installation space can communicate with the outside through the through groove 110. After the end of the secondary wiring top plate 200 is installed in the through groove 110, part of the end of the secondary wiring top plate 200 will pass through the through groove 110 and be in the external environment. At this time, after the cover body 500 is installed on the outer wall of the housing 100, the part of the end of the secondary wiring top plate 200 that passes through the through groove 110 and is in the external environment is located in the internal space of the cover body 500, so that the cover body 500 can play a protective role for the end of the secondary wiring top plate 200.

[0073] When the circuit breaker body 700 is pulled out from the drawer base, the driving structure can drive the transmission member 400 to move, and the transmission member 400 drives the secondary wiring top plate 200 to move away from the circuit breaker body 700, so as to drive the wiring end of the secondary wiring terminal 300 to move away from the circuit breaker body 700, separating the secondary wiring terminal 300 from the circuit breaker body 700.

[0074] In summary, in the present application, the through groove 110 is provided on the side wall of the housing 100, and the secondary wiring top plate 200 can be arranged on the housing 100 by using the through groove 110. The secondary wiring top plate 200 can drive the secondary wiring terminal 300 to separate from the circuit breaker body 700 through the cooperation with the transmission member 400, so that the circuit breaker body 700 can be smoothly taken out from the drawer base.

[0075] The cover body 500 is provided on the outer wall of the housing 100 and the cover body 500 covers the through groove 110, which can play a shielding role for the through groove 110, reducing the probability of foreign objects falling into the drawer base through the through groove 110 from the outside. In this way, it can play a protective role for the transmission member 400 slidably arranged on the inner wall of the housing 100, reducing the probability of problems such as the movement of the transmission member 400 being stuck due to the existence of foreign objects, thereby affecting the removal of the circuit breaker body 700 from the drawer base.

[0076] Figure 7 The structural schematic diagram of the cover body provided by the embodiment of the present application from a perspective. Figure 8 The structural schematic diagram of the cover body provided by the embodiment of the present application from another perspective. As Figure 2 , Figure 7 and Figure 8 shown, the cover body 500 includes a bottom plate 510 and a side plate 520. The bottom plate 510 is parallel to the side wall of the housing 100, and the side plate 520 is perpendicular to the bottom plate 510. The bottom plate 510 is used to block the through groove 110 in the opening direction of the through groove 110, and the side plate 520 is used to block the through groove 110 in the moving direction of the transmission member 400.

[0077] Since the through groove 110 penetrates the side wall of the housing 100, when the secondary wiring top plate 200 is installed in the through groove 110, part of the end of the secondary wiring top plate 200 will protrude from the inside of the housing 100. Therefore, the cover body 500 can be made into a shape with a concave middle part to avoid interference with the installation of the cover body 500 when the cover body 500 is installed on the side wall of the housing 100 due to the part of the secondary wiring top plate 200 protruding from the inside of the housing 100.

[0078] The bottom plate 510 can be integrally formed with the side plate 520, or the bottom plate 510 and the side plate 520 can be formed separately and then assembled.

[0079] Through the above settings, when the cover body 500 is installed on the side wall of the housing 100, since the bottom plate 510 is parallel to the side wall of the housing 100, the bottom plate 510 can block the through groove 110 in the opening direction of the through groove 110, reducing the probability of foreign objects falling into the inside of the drawer seat from the through groove 110. The side plate 520 is perpendicular to the bottom plate 510, which not only can prevent the cover body 500 from interfering with the end of the secondary wiring top plate 200 during installation, but also the perpendicularly arranged side plate 520 can block the through groove 110 in the moving direction of the transmission member 400, reducing the probability of foreign objects falling into the through groove 110 from the gap between the bottom plate 510 and the side wall of the housing 100.

[0080] Please continue to refer to Figure 7 and Figure 8 shown, the side plate 520 includes a first plate 521, a second plate 522 and a third plate 523. The first plate 521 is parallel to the third plate 523, and the second plate 522 is perpendicular to both the first plate 521 and the third plate 523.

[0081] The first plate 521, the second plate 522 and the third plate 523 can be arranged in sequence along the edge of the bottom plate 510, and the two ends of the second plate 522 can be respectively connected to the first plate 521 and the third plate 523.

[0082] With the above settings, since the first plate 521 and the third plate 523 are arranged in parallel, and the side plate 520 is perpendicular to the bottom plate 510, when the cover body 500 is covered on the through groove 110, the first plate and the third plate 523 can simultaneously block the through groove 110 in the moving direction of the transmission member 400, and the second plate 522 is perpendicular to both the first plate 521 and the third plate 523 at the same time, so that the second plate can block the through groove 110 in the installation direction of the circuit breaker body 700. In this way, the probability of foreign objects falling into the inside of the drawer seat from the through groove 110 can be reduced, thereby reducing the probability that the transmission member 400 is stuck due to the presence of foreign objects, which in turn affects the problem of the circuit breaker body 700 being taken out from the drawer seat.

[0083] Figure 9 For Figure 2 Schematic diagram of the structure of the secondary wiring terminal cover. As Figure 1 And Figures 7 to 9 shown, the drawer seat further includes a secondary wiring terminal cover 600. The housing 100 is provided with a first mounting portion 120, the first mounting portion 120 protrudes from the side wall of the housing 100, the first mounting portion 120 is provided with a first mounting hole 121, and the secondary wiring terminal cover 600 is fixed to the first mounting hole 121 by bolts. There is a gap 524 between the second plate 522 and the first plate 521, and a second mounting hole 525 is provided near the first plate 521 on the second plate 522. The first mounting portion 120 and a part of the secondary wiring terminal cover 600 are located in the gap 524, and the second mounting hole 525 and the first mounting hole 121 are opposite in position, and the cover body 500 is fixed to the housing 100 by bolts.

[0084] The secondary wiring terminal cover 600 can be plate-shaped. The secondary wiring terminal cover 600 can be covered on the secondary wiring top plate 200 to protect the secondary wiring top plate 200 and the wiring ends of the secondary wiring terminals 300. The secondary wiring terminal cover 600 has two opposite ends, and the first mounting holes 121 are provided at both ends of the secondary wiring terminal cover 600.

[0085] The housing 100 can be provided with two first mounting portions 120, and the two first mounting portions 120 are respectively arranged on two opposite side walls of the housing 100. Since the internal space of the housing 100 is limited, in order to avoid occupying too much internal space of the housing 100, the two first mounting portions 120 can both protrude from the side wall of the housing 100. Threaded holes can be provided on both of the two first mounting portions 120. When the secondary wiring terminal cover 600 is covered on the secondary wiring top plate 200, the two first mounting holes 121 respectively coincide with the threaded holes provided on the two first mounting portions 120. At this time, bolts are passed through the first mounting holes 121 and then fastened to the second mounting holes 525 to fix the secondary wiring terminal cover 600.

[0086] A gap 524 may be provided between the second plate 522 and the first plate 521, and the gap 524 may be provided at one end of the first plate 521 close to the second plate 522. The gap 524 may be integrally formed with the side plate 520 when the side plate 520 is formed, or the gap 524 may also be provided on the first plate 521 by means of engraving or cutting after the side plate 520 is formed.

[0087] The second mounting hole 525 may be provided at one end of the second plate 522 close to the first plate 521, or the setting position of the second mounting hole 525 may be adjusted according to the setting position of the first mounting portion 120.

[0088] Through the above settings, the setting of the secondary wiring terminal cover 600 can protect the wiring ends of the secondary wiring top plate 200 and the secondary wiring terminals 300, reduce the possibility that the wiring ends of the secondary wiring top plate 200 and the secondary wiring terminals 300 are directly exposed to the air, and increase the service life of the wiring ends of the secondary wiring top plate 200 and the secondary wiring terminals 300.

[0089] Since the cover body 500 needs to be covered on the through groove 110, and the setting position of the first mounting portion 120 is close to the through groove 110, the setting of the gap 524 can make way for the end portion of the secondary wiring terminal cover 600 and the first mounting portion 120 when the cover body 500 is covered on the through groove 110, so that the cover body 500 can more effectively block the through groove 110 to reduce the probability of foreign objects falling into the drawer seat from the through groove 110.

[0090] By matching the second mounting hole 525 provided on the second plate 522 with the threaded hole provided on the first mounting portion 120 and using bolts to fix the cover body 500 to the side wall of the housing 100, not only can the first mounting portion 120 achieve the effect of reuse, but also the setting of the mounting portion specifically for fixing the cover body 500 can be reduced, saving the use of materials and reducing the production cost of the drawer seat.

[0091] Please continue to refer to Figure 4 and Figure 6 As shown, the housing 100 is provided with a second mounting portion 130, and the second mounting portion 130 protrudes from the side wall of the housing 100. The drawer seat further includes a spring, one end of the spring is connected to the second mounting portion 130, and the other end of the spring is connected to the secondary wiring top plate 200.

[0092] The housing 100 may be provided with two second mounting portions 130, and the two second mounting portions 130 are respectively provided on two opposite side walls of the housing 100. Since the internal space of the housing 100 is limited, in order to avoid occupying too much internal space of the housing 100, the two second mounting portions 130 may both protrude from the side wall of the housing 100.

[0093] The two second mounting parts 130 are respectively connected to both ends of the secondary wiring top plate 200 through springs. The arrangement of the springs can assist the secondary wiring top plate 200 to move towards the circuit breaker body 700. The arrangement of the two second mounting parts 130 can make the secondary wiring top plate 200 more evenly stressed under the pulling force of the springs, which can increase the reliability of use of the secondary wiring top plate 200.

[0094] In summary, the second mounting part 130 is arranged on the side wall of the housing 100, which can occupy less space inside the housing 100 without affecting the function of the second mounting part 130. Connecting the second mounting part 130 to the secondary wiring top plate 200 by using springs can assist the movement of the secondary wiring top plate 200 towards the circuit breaker body 700, so that it is easier to connect the wiring terminal driven by the secondary wiring top plate 200 to the circuit breaker body 700, reducing the difficulty of using the drawer-type circuit breaker.

[0095] Please continue to refer to Figures 6 to 8 As shown, the second plate 522 includes a first sub-plate and a second sub-plate, and the first sub-plate and the second sub-plate are offset in the installation direction of the circuit breaker body 700. The second mounting part 130 is located in the first relief groove 526 formed after the offset of the first sub-plate and the second sub-plate.

[0096] The first sub-plate and the second sub-plate can be connected, or there can be a gap between the first sub-plate and the second sub-plate. For example: when the cover body 500 is made by an injection molding process, the first sub-plate and the second sub-plate can be connected. When the cover body 500 is made by a stamping process, there can also be a gap between the first sub-plate and the second sub-plate, which is more conducive to manufacturing.

[0097] The first sub-plate and the second sub-plate can be offset in the installation direction of the circuit breaker body 700 to form the first relief groove 526. Since the installation positions of the first mounting part 120 and the second mounting part 130 are different, in order to better block the through groove 110, when the cover body 500 covers the through groove 110, the second mounting part 130 can be located in the first relief groove 526 formed between the first sub-plate and the second sub-plate.

[0098] Through the above arrangement, the first sub-plate and the second sub-plate are offset in the installation direction of the circuit breaker body 700 to form the first relief groove 526. The first relief groove 526 can make way for the second mounting part 130 when the cover body 500 covers the through groove 110, reducing the occurrence of interference problems between the second mounting part 130 and the cover body 500 when the cover body 500 covers the through groove 110, and increasing the reliability of the installation of the cover body 500.

[0099] Such as Figure 1 、Figure 3 and Figure 6 As shown in Figure 6 , the through slot 110 includes a first slot 111 and a second slot 112, and the first slot 111 communicates with the second slot 112. The first slot 111 extends along the moving direction of the transmission member 400, and the second slot 112 extends along the installation direction of the circuit breaker body 700. The first slot 111 is used for the transmission member 400 to drive the secondary wiring top plate 200 to move, and the second slot 112 is used for the circuit breaker body 700 to drive the secondary wiring top plate 200 to move. The cover body 500 covers the first slot 111 and the second slot 112.

[0100] Both the first slot 111 and the second slot 112 can be slots opened on the side wall of the housing 100, and a part of the first slot 111 coincides with the second slot 112, so that after the transmission member 400 drives the secondary wiring top plate 200 to move, the circuit breaker body 700 can continue to drive the secondary wiring top plate 200 to move. This avoids the probability of the problem that the secondary wiring top plate 200 cannot move with the circuit breaker body 700 due to the incomplete setting of the through slot 110, and increases the use reliability of the drawer-type circuit breaker.

[0101] When the cover body 500 covers the through slot 110, the cover body 500 simultaneously shields the first slot 111 and the second slot 112, which can reduce the probability of foreign objects falling into the inside of the drawer base along the first slot 111 and / or the second slot 112.

[0102] Through the above settings, the first slot 111 extends along the moving direction of the transmission member 400, and the transmission member 400 can drive the end of the secondary wiring top plate 200 to move in the first slot 111. The second slot 112 extends along the installation direction of the circuit breaker body 700, and the circuit breaker body 700 can drive the end of the secondary wiring top plate 200 to move in the second slot 112. The form in which the first slot 111 and the second slot 112 communicate and partially coincide can reduce the area of the through slot 110 compared with the form of setting the through slot 110 as a large slot that completely includes the first slot 111 and the second slot 112, thereby reducing the probability of foreign objects entering the inside of the drawer base through the through slot 110.

[0103] Moreover, the form in which the first slot 111 and the second slot 112 communicate and partially coincide can also reduce the volume of the cover body 500, and a smaller cover body 500 can be used to shield the through slot 110. This can not only reduce the volume occupied by the drawer base during installation, but also reduce the manufacturing cost of the cover body 500.

[0104] Please continue to refer to Figure 3 、 Figure 4 and Figure 7As shown, the first plate 521 and the third plate 523 are both perpendicular to the second plate 522, so that a second relief groove 530 is formed on the side of the first plate 521 and the third plate 523 away from the second plate 522. The second relief groove 530 can provide clearance for the movement of the secondary wiring top plate 200.

[0105] The first plate 521 and the third plate 523 are both perpendicular to the second plate 522, and the second plate 522 is respectively connected to the first plate 521 and the third plate 523, so that the side plate 520 forms a 'U'-shaped structure, and the notch of the 'U'-shaped structure is the second relief groove 530.

[0106] The second relief groove 530 is arranged on the moving path of the secondary wiring top plate 200 moving with the circuit breaker body 700, so that the cover 500 can provide clearance for the end of the secondary wiring top plate 200 when the circuit breaker body 700 drives the secondary wiring top plate 200 to move.

[0107] In summary, since the second groove 112 extends along the moving direction of the circuit breaker body 700 and the length of the second groove 112 is relatively long, and there are other components on the side wall of the housing 100, in order to provide clearance for the end of the secondary wiring top plate 200 and other components arranged on the side wall of the housing 100, the second relief groove 530 is provided on the side plate 520. The setting of the second relief groove 530 can also reduce the production cost of the cover 500.

[0108] Figure 10 For Figure 3 the enlarged view of part B in. As Figure 2 、 Figure 3 and Figure 10 shown, a limiting member 140 is provided on the inner wall of the housing 100, and the transmission member 400 is slidably arranged in the limiting member 140. The limiting member 140 is used to limit the movement of the transmission member 400 along the installation direction of the circuit breaker body 700.

[0109] The limiting member 140 can be a protruding structure arranged on the inner wall of the housing 100. The number of the limiting members 140 can be two. There is a gap between the two limiting members 140. The transmission member 400 is located in the gap, and the transmission member 400 is in sliding contact with the two limiting members 140 respectively.

[0110] In summary, the transmission member 400 is only used to drive the secondary wiring top plate 200 to move, so that the secondary wiring top plate 200 drives the wiring terminal to be connected to the circuit breaker body 700. After the wiring terminal is connected to the circuit breaker body 700, the secondary wiring top plate 200 still needs to continue to move into the installation space along with the circuit breaker body 700. At this time, the setting of the limiting member 140 can limit the movement of the transmission member 400, reducing the probability of the problem that the transmission member 400 is misaligned and cannot be used due to the movement of the secondary wiring top plate 200 driving the transmission member 400, and increasing the use reliability of the drawer-type circuit breaker.

Claims

1. A drawer base is applied to a draw-out circuit breaker, and the draw-out circuit breaker includes a circuit breaker body, characterized in that, The drawer seat comprises: A housing having an installation space therein, the circuit breaker body being arranged in the installation space, and a through slot being arranged on a side wall of the housing; A secondary wiring top plate, the end of which is installed in the through groove; A secondary wiring terminal is provided on the housing, the secondary wiring terminal comprises a wiring terminal, the wiring terminal is located in the installation space and is connected to the circuit breaker body; a transmission member, slidably disposed on the inner wall of the housing and opposite to the end position of the secondary wiring top plate, the transmission member can drive the secondary wiring top plate to move, so that the secondary wiring top plate drives the wiring terminal to move in a direction away from the circuit breaker body, so that the secondary wiring terminal is separated from the circuit breaker body; The cover body is arranged on the outer wall of the shell, and the cover body is arranged to cover the through groove.

2. The drawer seat according to claim 1, characterized in that, The cover body includes a bottom plate and a side plate; The bottom plate is parallel to the side wall of the shell, and the side plate is perpendicular to the bottom plate; The bottom plate is used to shield the through slot in the direction in which the through slot is opened, and the side plate is used to shield the through slot in the direction in which the transmission member moves.

3. The drawer seat according to claim 2, wherein, The side plate includes a first plate, a second plate and a third plate. The first plate is arranged in parallel with the third plate, and the second plate is perpendicular to the first plate and the third plate.

4. The drawer base according to claim 3, characterized in that, The drawer seat also includes a secondary terminal cover; The housing is provided with a first mounting portion, the first mounting portion protrudes from the side wall of the housing, the first mounting portion is provided with a first mounting hole, and the secondary terminal cover is fixed to the first mounting hole by bolts; There is a gap between the second plate and the first plate, and a second mounting hole is provided on the second plate near the first plate; The first mounting portion and a portion of the secondary terminal cover are located in the gap, and the second mounting hole is opposite to the first mounting hole, and the cover is fixed to the housing by bolts.

5. The drawer base according to claim 3, characterized in that, The housing is provided with a second mounting portion, and the second mounting portion protrudes from the side wall of the housing; The drawer seat also includes a spring, one end of the spring is connected to the second mounting portion, and the other end of the spring is connected to the secondary wiring top plate.

6. The drawer base according to claim 5, wherein, The second plate includes a first sub-plate and a second sub-plate, and the first sub-plate and the second sub-plate are offset in the installation direction of the circuit breaker body; The second mounting portion is located in a first evacuation groove formed after the first sub-board and the second sub-board are misaligned.

7. The drawer base according to claim 3, characterized in that, The through groove includes a first groove and a second groove, and the first groove is connected with the second groove; The first groove extends along the moving direction of the transmission member, and the second groove extends along the installation direction of the circuit breaker body. The first groove is used for the transmission member to drive the secondary wiring top plate to move, and the second groove is used for the circuit breaker body to drive the secondary wiring top plate to move; The cover body is disposed on the first groove and the second groove.

8. The drawer seat according to claim 7, characterized in that, The first plate and the third plate are both arranged perpendicularly to the second plate, so that a second clearance groove is formed on a side of the first plate and the third plate away from the second plate; The second making way groove can make way for the movement of the secondary connection top plate.

9. The drawer base according to claim 1, characterized in that, A limiting member is provided on the inner wall of the housing, the transmission member is slidably disposed within the limiting member, and the limiting member is configured to restrict the movement of the transmission member along the installation direction of the circuit breaker body.

10. A drawer-type circuit breaker, characterized in that, Comprising a circuit breaker body and a drawer base as described in any one of claims 1 to 9; The circuit breaker body is slidably disposed within the drawer base.

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