A busbar and drawer type circuit breaker

Abstract

The present application provides a busbar and a drawer-type circuit breaker, which belongs to the technical field of electrical equipment. The busbar provided by the present application includes a busbar. The busbar includes a bus terminal and a wiring terminal, the wiring terminal is used to electrically connect to an external conductive member, and the bus terminal includes a plurality of clamp mounting parts, each of which is connected to a bundle clamp. The arrangement direction of the plurality of clamp mounting parts is perpendicular to the arrangement direction of the plurality of contact rows, and is perpendicular to the direction in which the bundle clamp is installed to the busbar. The present application makes the arrangement direction of the plurality of clamp mounting parts perpendicular to the arrangement direction of the plurality of contact rows and the installation direction of the busbar, respectively, which can increase the space between the inlet and outlet of the circuit breaker body. In this way, the air flow range inside the drawer-type circuit breaker can be made larger, thereby increasing the heat dissipation at the inlet and outlet of the circuit breaker body, reducing the temperature rise at the inlet and outlet of the circuit breaker body, and thus increasing the service life of the drawer-type circuit breaker.

Description

Technical Field

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

[0002] A drawer type circuit breaker is a circuit breaker with a modular design, used to protect and control circuits. A drawer type 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 shaken out of the drawer base. The circuit breaker body is generally connected to external conductive parts through a busbar.

[0003] In the prior art, the temperature of the busbar of the drawer-type circuit breaker is easily too high, which affects the internal components of the drawer-type circuit breaker and thus affects the overall service life of the drawer-type circuit breaker. Therefore, a busbar and a drawer-type circuit breaker are urgently needed. Utility Model Content

[0004] The present application provides a busbar and a drawer-type circuit breaker, which can reduce the temperature rise at the incoming and outgoing terminals of the circuit breaker body and increase the service life of the drawer-type circuit breaker.

[0005] In a first aspect, the present application provides a busbar, which is applied to a drawer-type circuit breaker. The drawer-type circuit breaker includes a plurality of contact bars and a plurality of bundled clamps, one end of the bundled clamp is connected to the contact bar, and the busbar includes a busbar. The busbar includes a bus terminal and a wiring terminal, the wiring terminal is used to electrically connect to an external conductive member, and the bus terminal includes a plurality of clamp mounting portions, each of which is connected to a bundled clamp. The arrangement direction of the plurality of clamp mounting portions is perpendicular to the arrangement direction of the plurality of contact bars, and is perpendicular to the direction in which the bundled clamps are installed toward the busbar.

[0006] Through the above scheme, the present application sets a plurality of clamp mounting parts on the busbar's converging end, so that one busbar can be connected to a plurality of bundle clamps, and the arrangement directions of the plurality of clamp mounting parts are respectively perpendicular to the arrangement directions of the plurality of contact rows and the installation direction of the busbar, so that the space between the incoming end and the outgoing end of the circuit breaker body can be increased. In this way, the air flow range inside the drawer-type circuit breaker can be made larger, thereby increasing the heat dissipation at the incoming end and the outgoing end of the circuit breaker body, reducing the temperature rise at the incoming end and the outgoing end of the circuit breaker body, and thus improving the service life of the drawer-type circuit breaker.

[0007] In a possible design, the number of busbars is one, and the busbar includes a first segment and a second segment connected to each other, and a non-zero angle is formed between the first segment and the second segment. The wiring terminal is arranged at a portion of the first segment away from the second segment. The bus terminal is arranged at the second segment, and a plurality of clamp mounting portions are arranged at intervals on a side of the second segment away from the first segment.

[0008] Through the above scheme, the busbar is set as a first segment and a second segment connected to each other, and there is a non-zero angle between the first segment and the second segment, so that the busbar can be bent, and the straight part of the busbar is used to connect the external conductive member, and the bent part of the busbar can make the arrangement direction of the clamp installation part perpendicular to the direction of the bundle clamp head to the busbar installation, and there can be more space to install multiple clamp installation parts. In this way, when the incoming and outgoing ends of the circuit breaker body are connected to the bundle clamp head through the contact row, the interval between the incoming and outgoing ends of the circuit breaker body will become larger, increasing the air flow range inside the drawer-type circuit breaker, thereby increasing the heat dissipation at the incoming and outgoing ends of the circuit breaker body, and reducing the temperature rise at the incoming and outgoing ends of the circuit breaker body.

[0009] In a possible design, the second segment is connected to one side of the first segment. Alternatively, the second segment is connected to two opposite sides of the first segment.

[0010] Through the above solution, the second segment is connected to one side of the first segment, which can make the manufacturing of the busbar simpler. The second segment is connected to the opposite sides of the first segment. After the bundle clamp is installed on the clamp installation part, the force on the first segment can be more uniform, thereby increasing the stability of the busbar during installation and reducing the probability of damage to the busbar due to uneven force on the first segment caused by the installation of the bundle clamp.

[0011] In a possible design, the number of busbars is two, and the busbars include a first busbar and a second busbar. The first busbar includes a first straight section and a first bent section connected to each other, and a non-zero angle exists between the first straight section and the first bent section. The second busbar is in the shape of a flat plate, and the second busbar includes a second straight section. The connection terminal is arranged at a position of the first straight section and the second straight section away from the first bent section. The confluence terminal is arranged at a position of the first bent section and / or the second straight section close to the first bent section. A plurality of clamp mounting portions are arranged at intervals on one side of the first bent section away from the first straight section and / or the second straight section close to the first bent section.

[0012] Through the above scheme, the busbar is divided into a first busbar and a second busbar. When the busbar is damaged, or when the busbar is worn out and needs to be replaced, it can be replaced separately according to the actual situation of the first busbar or the second busbar. In this way, the maintenance cost of the busbar in the later stage is saved, thereby reducing the overall use cost of the drawer-type circuit breaker.

[0013] In a possible design, a limiting block is provided on a side of the second straight section close to the first bent section, and the first bent section partially abuts against the limiting block.

[0014] Through the above scheme, the limit block abuts against part of the first bending section, so that the second busbar can limit the first busbar, avoiding the misalignment problem between the first busbar and the second busbar during the installation process. In addition, since the second busbar is flat, the setting of the limit block can also play an anti-misalignment role, reducing the probability of installing the connection terminal and the bus terminal of the second busbar reversely during the installation process.

[0015] In a possible design, the drawer-type circuit breaker further includes a chassis base, in which the bundle clamp and part of the busbar are installed, and the busbar further includes a mounting frame, a first portion of which is connected to the busbar, and a second portion of which is used to connect to the chassis base.

[0016] Through the above scheme, the chassis base provided in the present application can provide installation space for the bundle clamp and the busbar, so that not only can the installation of the bundle clamp and the busbar be more neat, but the chassis base can also play a certain protective role for the bundle clamp and the busbar. The present application uses a mounting frame to fix the busbar and the chassis base, thereby increasing the installation stability of the busbar.

[0017] In a possible design, a first mounting hole is provided on a first side of the chassis base, and the first mounting hole is used for the connection terminal of the busbar to pass through. An isolation baffle is provided on a second side of the chassis base, and a second mounting hole is provided on the isolation baffle, and the second mounting hole is used for the contact bar to extend into the chassis base and connect with the bundle clamp.

[0018] Through the above scheme, the isolation baffle can be used to shield the components in the chassis base, reducing the probability of safety problems caused by the operator accidentally touching the bundle clamp when the bus has been connected to the external conductive part and the bundle clamp has been connected to the bus, but the bundle clamp has not been connected to the contact bar.

[0019] In a possible design, the isolation baffle includes a first plate and a second plate, the first plate is fixedly connected to the chassis base, and the second plate is slidably connected to the first plate. Before the circuit breaker body and the contact row are installed on the chassis base, the second plate can slide relative to the first plate in a first direction to shield the internal space of the base. When the circuit breaker body and the contact row are installed on the chassis base, the second plate can slide relative to the first plate in a second direction to expose the internal space of the chassis base, and the second direction is opposite to the first direction.

[0020] Through the above scheme, before the circuit breaker body and the contact bar are installed on the chassis base, the second plate can slide relative to the first plate in the first direction. At this time, the plate body of the second plate will cover the second mounting hole set on the first plate, so that the bundle clamp and the busbar in the chassis base will not be exposed to the outside. When the circuit breaker body and the contact bar are installed on the chassis base, the second plate can slide relative to the first plate in the second direction until the second mounting hole on the first plate is aligned with the second mounting hole on the second plate, and the circuit breaker body and the contact bar can be connected with the bundle clamp. This arrangement can reduce the probability of safety problems caused by the operator accidentally touching the bundle clamp when the circuit breaker body and the contact bar are not connected with the bundle clamp, and when the circuit breaker body and the contact bar are installed on the chassis base, the isolation baffle will not hinder the installation of the circuit breaker body and the contact bar.

[0021] In a possible design, the busbar includes at least one heat sink, which is connected to the first busbar and / or the second busbar.

[0022] Through the above scheme, the present application sets a heat dissipation device in the busbar, and connects the heat dissipation device to the first busbar and / or the second busbar, so that a part of the heat generated when the current passes through the busbar is transferred to the heat dissipation device, thereby achieving the effect of assisting the heat dissipation of the busbar, so as to reduce the temperature rise at the busbar and thus reduce the damage to the internal components of the drawer-type circuit breaker caused by excessive temperature, thereby increasing the service life of the drawer-type circuit breaker.

[0023] In a second aspect, the present application provides a drawer-type circuit breaker, which includes a circuit breaker body, a drawer seat, a contact row, a bundle clamp and the bus mentioned in the first aspect. The circuit breaker body is slidably connected to the drawer seat. The bundle clamp and part of the bus are located in the drawer seat. The first end of the contact row is connected to the bundle clamp, and the second end of the contact row is connected to the circuit breaker body. One end of the bus located in the drawer seat is connected to the bundle clamp, and one end of the bus located outside the drawer seat is used to connect to an external conductive member.

[0024] Through the above scheme, the present application sets a plurality of clamp mounting parts on the bus end of the bus, a plurality of bundled clamps are connected to the clamp mounting parts, the bundled clamps are connected to the contact row on the circuit breaker body and the wiring terminals are connected to the external conductive parts. Under the premise of not affecting the normal operation of the drawer-type circuit breaker, the temperature rise at the incoming and outgoing terminals of the circuit breaker body can be reduced, thereby improving the service life of the drawer-type circuit breaker.

[0025] 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, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a portion of the structure of a drawer-type circuit breaker provided in an embodiment of the present application.

[0027] Figure 2 A schematic diagram of the assembly structure of a bus bar, a bundled clamp and a contact bar provided in an embodiment of the present application.

[0028] Figure 3 This is the first configuration form of the busbar provided in the embodiment of the present application.

[0029] Figure 4 This is the second configuration of the busbar provided in the embodiment of the present application.

[0030] Figure 5 This is the third configuration of the busbar provided in the embodiment of the present application.

[0031] Figure 6 This is the fourth configuration of the busbar provided in the embodiment of the present application.

[0032] Figure 7 A schematic diagram of the structure of the chassis base provided in an embodiment of the present application.

[0033] Figure 8 A schematic diagram of the structure of the mounting frame provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 100, busbar; 110, bus terminal; 111, clamp mounting portion; 120, terminal; 130, first segment; 140, second segment; 150, first busbar; 151, first straight segment; 152, first bending segment; 160, second busbar; 161, second straight segment; 162, second bending segment; 170, stopper;

[0036] 200, chassis base; 210, isolation baffle; 211, first plate; 212, second plate; 220, second mounting hole;

[0037] 300, mounting frame; 310, first portion; 320, second portion;

[0038] 400, drawer seat;

[0039] 500, beam chuck;

[0040] 600, contact row; 610, first end; 620, second end;

[0041] OX, first direction; OY, second direction. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0044] The terms "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.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the static contact of a circuit breaker of the present application and the specific structure of the circuit breaker. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "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 a limitation on the present application.

[0048] In addition, the terms "first", "second", etc. in the specification 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 of the features.

[0049] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, that is, a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements; the signal connection may refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] 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 in conjunction with the accompanying drawings.

[0051] Figure 1 A schematic diagram of a portion of the structure of a drawer-type circuit breaker provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the assembly structure of the busbar, bundle clamp and contact bar provided in the embodiment of the present application. Figure 1 as well as Figure 2 As shown, the present application provides a drawer-type circuit breaker, which includes a circuit breaker body, a drawer seat 400, a contact bar 600, a bundle clamp 500 and a bus bar. The circuit breaker body is slidably connected to the drawer seat 400. The bundle clamp 500 and part of the bus bar are located in the drawer seat 400. The first end 610 of the contact bar 600 is connected to the bundle clamp 500, and the second end 620 of the contact bar 600 is connected to the circuit breaker body. One end of the bus bar located in the drawer seat 400 is connected to the bundle clamp 500, and one end of the bus bar located outside the drawer seat 400 is used to connect to an external conductive member.

[0052] Drawer type circuit breaker is a special low voltage circuit breaker. Its design feature is that the circuit breaker body can be freely moved in and out of the drawer seat 400 of the drawer type circuit breaker like a drawer. The drawer type circuit breaker has the advantages of convenient maintenance, high flexibility and space saving. Drawer type circuit breakers are widely used in factories, commercial buildings, residential areas and other places as important protection equipment for low voltage distribution networks.

[0053] The drawer base 400 is also called a drawer unit or a drawer frame, and is an important component for installing a circuit breaker in a control cabinet or a distribution box. The drawer base 400 can make the installation, maintenance and replacement of the circuit breaker more convenient.

[0054] The circuit breaker body is slidably connected in the drawer seat 400, so that the circuit breaker body can be withdrawn from the drawer seat 400 alone for inspection, replacement or maintenance without shutting down the entire circuit.

[0055] The contact row 600 may be U-shaped, may be integrally formed, or may be composed of a plurality of flat contact rows 600 .

[0056] like Figure 2 As shown, one end of the busbar is connected to an external conductive member, the other end of the busbar is connected to one end of the bundle clamp 500, the other end of the bundle clamp 500 is connected to the first end 610 of the contact bar 600, and the second end 620 of the contact bar 600 is connected to the circuit breaker body, so that the external current can be conducted with the circuit breaker body, thereby ensuring that the power system can operate normally.

[0057] The busbar of the drawer seat 400 is an important part for connecting the circuit breaker body with the external power supply and the circuit breaker body. The busbar end 110 is connected to a plurality of bundle clamps 500, and the connection terminal 120 of the busbar is connected to an external conductive member so that the external current can flow into the contact bar 600 through the busbar. The busbar includes a plurality of bundle clamp mounting portions 111.

[0058] In the present application, a plurality of clamp mounting portions 111 are arranged on the bus end 110 of the bus bar, a plurality of bundled clamps 500 are connected to the bundled clamp mounting portions 111, the bundled clamps 500 are connected to the contact row 600 on the circuit breaker body and the wiring terminal 120 is connected to the external conductive member. Under the premise of not affecting the normal operation of the drawer-type circuit breaker, the temperature rise at the incoming and outgoing terminals of the circuit breaker body can be reduced, thereby increasing the service life of the drawer-type circuit breaker.

[0059] The bus provided in this application is explained in detail below with reference to the accompanying drawings.

[0060] Please continue to refer to Figure 1 as well as Figure 2As shown, the present application provides a busbar, which is applied to a drawer-type circuit breaker. The drawer-type circuit breaker includes a plurality of contact bars 600 and a plurality of bundled clamps 500. One end of the bundled clamp 500 is connected to the contact bar 600. The busbar includes a busbar 100. The busbar 100 includes a bus terminal 110 and a wiring terminal 120. The wiring terminal 120 is used to electrically connect to an external conductive member. The bus terminal 110 includes a plurality of clamp mounting portions 111. Each clamp mounting portion 111 is connected to a bundled clamp 500. The arrangement direction of the plurality of clamp mounting portions 111 is perpendicular to the arrangement direction of the plurality of contact bars 600, and is perpendicular to the direction in which the bundled clamp 500 is installed toward the busbar 100.

[0061] The bus terminal 110 is used to connect with the bundle clamp 500, and the terminal 120 is used to electrically connect with an external conductive member. The bus terminal 110 is provided with a plurality of clamp mounting portions 111, which may be two or three, etc., and accordingly, the number of the bundle clamp 500 may be the same as the number of the clamp mounting portions 111.

[0062] The clamp mounting portion 111 may be a protruding structure provided on the busbar 100. The clamp mounting portion 111 may be integrally formed with the busbar 100, or the clamp mounting portion 111 may be separately formed with the busbar 100 and then assembled. A groove may be provided on the clamp mounting portion 111 to make the fixing between the clamp head 500 and the busbar 100 more stable.

[0063] In summary, the present application sets a plurality of clamp mounting portions 111 on the busbar 100 of the busbar 100, so that one busbar 100 can be connected to a plurality of bundle clamps 500, and the arrangement directions of the plurality of clamp mounting portions 111 are respectively perpendicular to the arrangement directions of the plurality of contact bars 600 and the installation direction of the busbar 100, so that the space between the incoming end and the outgoing end of the circuit breaker body can be increased. In this way, the air flow range inside the drawer-type circuit breaker can be made larger, thereby increasing the heat dissipation at the incoming end and the outgoing end of the circuit breaker body, reducing the temperature rise at the incoming end and the outgoing end of the circuit breaker body, and thus improving the service life of the drawer-type circuit breaker.

[0064] There may be various ways to set the number of busbars 100, the arrangement of busbars 100, and the combination of multiple busbars 100 to achieve the effect of reducing the temperature rise at the inlet and outlet terminals of the circuit breaker body. Four possible implementations are shown below.

[0065] Figure 3 This is the first configuration form of the busbar provided in the embodiment of the present application. Figure 3As shown, the number of busbars 100 is one, and the busbar 100 includes a first segment 130 and a second segment 140 connected to each other, and a non-zero angle exists between the first segment 130 and the second segment 140, and the second segment 140 is connected to one side of the first segment 130. The terminal 120 is provided at a portion of the first segment 130 away from the second segment 140. The bus terminal 110 is provided at the second segment 140, and a plurality of clamp mounting portions 111 are provided at intervals at one side of the second segment 140 away from the first segment 130.

[0066] The first segment 130 and the second segment 140 may both be in the shape of a flat plate. The first segment 130 and the second segment 140 may be integrally formed, or the first segment 130 and the second segment 140 may be formed separately and then assembled according to the angle to be set. The non-zero angle between the first segment 130 and the second segment 140 may be 30°, 60°, or 90°, etc.

[0067] The plurality of clamp mounting portions 111 may be mounted at both ends of the second segment 140 , or may be mounted between both ends of the second segment 140 .

[0068] By the first method described above, the busbar 100 is set to the first segment 130 and the second segment 140 connected to each other, and there is a non-zero angle between the first segment 130 and the second segment 140, so that the busbar 100 can be bent, and the straight part of the busbar 100 is used to connect the external conductive member, and the bent part of the busbar 100 can make the arrangement direction of the clamp mounting part 111 perpendicular to the direction in which the bundle clamp 500 is installed to the busbar 100, and there can be more space to install multiple clamp mounting parts 111. In this way, when the incoming and outgoing ends of the circuit breaker body are connected to the bundle clamp 500 through the contact row 600, the interval between the incoming and outgoing ends of the circuit breaker body will become larger, increasing the air flow range inside the drawer-type circuit breaker, thereby increasing the heat dissipation at the incoming and outgoing ends of the circuit breaker body, and reducing the temperature rise at the incoming and outgoing ends of the circuit breaker body of the drawer-type circuit breaker.

[0069] Figure 4 This is the second configuration form of the busbar provided in the embodiment of the present application. Figure 4 As shown, the number of busbars 100 is one, and the busbar 100 includes a first segment 130 and a second segment 140 connected to each other, and a non-zero angle exists between the first segment 130 and the second segment 140, and the second segment 140 is connected to opposite sides of the first segment 130. The terminal 120 is provided at a portion of the first segment 130 away from the second segment 140. The bus terminal 110 is provided at the second segment 140, and a plurality of clamp mounting portions 111 are provided at intervals on a side of the second segment 140 away from the first segment 130.

[0070] The two opposite sides of the first segment 130 may be two symmetrical sides with the first segment 130 as the symmetry axis in space. When the second segment 140 is connected to the two opposite sides of the first segment 130, the two second segments 140 are symmetrically arranged with the first segment 130 as the symmetry axis. Figure 4 As shown, the first segment 130 and the second segment 140 may be arranged at 90° therebetween.

[0071] Through the second method mentioned above, the second segment 140 is connected to the opposite sides of the first segment 130. After the bundle clamp 500 is installed on the clamp mounting portion 111, the force on the first segment 130 can be made more uniform, thereby increasing the stability of the busbar 100 during installation and reducing the probability of damage to the busbar 100 due to uneven force on the first segment 130 caused by the installation of the bundle clamp 500.

[0072] Figure 5 This is the third configuration form of the busbar provided in the embodiment of the present application. Figure 5 As shown, there are two busbars 100, and the busbars 100 include a first busbar 150 and a second busbar 160. The first busbar 150 includes a first straight section 151 and a first bent section 152 connected to each other, and a non-zero angle exists between the first straight section 151 and the first bent section 152. The second busbar 160 is in the shape of a flat plate, and the second busbar 160 includes a second straight section 161. The terminal 120 is arranged at a position where the first straight section 151 and the second straight section 161 are away from the first bent section 152. The bus terminal 110 is arranged at a position where the first bent section 152 and / or the second straight section 161 are close to the first bent section 152. A plurality of clamp mounting portions 111 are arranged at intervals on one side of the first bent section 152 away from the first straight section 151 and / or the second straight section 161 is close to the first bent section 152.

[0073] The first straight section 151 can be arranged in parallel with the second straight section 161. The first straight section 151 and the first bent section 152 can be formed as one piece, or the first straight section 151 and the first bent section 152 can be formed separately and then assembled according to the required angle. The angle between the first straight section 151 and the first bent section 152 can be 30°, 60° or 90°, etc. Figure 5 As shown, the first straight section 151 and the first bent section 152 may be arranged at an angle of 90°.

[0074] Through the third method mentioned above, the busbar 100 is divided into a first busbar 150 and a second busbar 160. When the busbar 100 is damaged, or when the busbar 100 is worn out and needs to be replaced, it can be replaced separately according to the actual situation of the first busbar 150 or the second busbar 160. In this way, the maintenance cost of the busbar 100 in the later stage is saved, thereby reducing the overall use cost of the drawer-type circuit breaker.

[0075] Please continue to refer to Figure 5 As shown, in some embodiments, a limiting block 170 is provided on one side of the second straight section 161 close to the first bending section 152 , and a portion of the first bending section 152 abuts against the limiting block 170 .

[0076] The stopper 170 may be a protruding structure provided on the second straight section 161 near the first bending section 152. The stopper 170 may be integrally formed with the second straight section 161, or the stopper 170 and the second straight section 161 may be separately formed and then assembled.

[0077] Through the above arrangement, the stopper 170 abuts against a portion of the first bending section 152, so that the second busbar 160 can limit the first busbar 150, thereby avoiding the misalignment problem between the first busbar 150 and the second busbar 160 during the installation process. In addition, since the second busbar 160 is in the shape of a flat plate, the arrangement of the stopper 170 can also play a foolproof role, reducing the probability of the problem of the connection terminal 120 and the bus terminal 110 of the second busbar 160 being installed in reverse during the installation process.

[0078] Figure 6 This is the fourth configuration form of the busbar provided in the embodiment of the present application. Figure 6 As shown, there are two busbars 100, and the busbars 100 include a first busbar 150 and a second busbar 160. The first busbar 150 includes a first straight section 151 and a first bent section 152 connected to each other, and a non-zero angle exists between the first straight section 151 and the first bent section 152. The second busbar 160 includes a second straight section 161 and a second bent section 162 connected to each other, and a non-zero angle exists between the second straight section 161 and the second bent section 162. The first busbar 150 and the second busbar 160 are arranged in mirror image.

[0079] The connection terminal 120 is disposed at a position of the first straight section 151 and the second straight section 161 away from the first bending section 152 and the second bending section 162. The confluence terminal 110 is disposed at the first bending section 152 and the second bending section 162. A plurality of clamp mounting portions 111 are disposed at intervals on one side of the first bending section 152 and the second bending section 162 away from the first straight section 151 and the second straight section 161.

[0080] The second straight section 161 can be arranged parallel to the first straight section 151. The second straight section 161 and the second bent section 162 can be integrally formed, or the second straight section 161 and the second bent section 162 can be formed separately and then assembled according to the required angle. The angle between the second straight section 161 and the second bent section 162 can be 30°, 60°, or 90°, etc.

[0081] The first bus bar 150 may have the same size and shape as the second bus bar 160 .

[0082] Through the above-mentioned fourth method, the first busbar 150 is configured as a first straight section 151 and a first bent section 152 connected to each other, and the second busbar 160 is configured as a second straight section 161 and a second bent section 162 connected to each other, the terminal 120 is arranged on the first straight section 151 and the second straight section 161, the bus terminal 110 is arranged on the first bent section 152 and the second bent section 162, and the first busbar 150 and the second busbar 160 are arranged in a mirror image. In this way, the time and manufacturing cost of the busbar 100 can be saved. Only a plurality of first busbars 150 or a plurality of second busbars 160 need to be manufactured. After the manufacturing is completed, two of them are placed in a mirror image and then assembled to complete the assembly of the busbar 100.

[0083] Figure 7 A schematic diagram of the structure of the chassis base provided in an embodiment of the present application. Figure 8 This is a schematic diagram of the structure of the mounting frame provided in the embodiment of the present application. Figure 7 as well as Figure 8 As shown, the drawer-type circuit breaker also includes a chassis base 200, in which the bundled clamp 500 and part of the busbar 100 are installed, and the busbar also includes a mounting frame 300, wherein the first portion 310 of the mounting frame 300 is connected to the busbar 100, and the second portion 320 of the mounting frame 300 is used to connect to the chassis base 200.

[0084] The chassis base 200 is a support structure provided in the drawer-type circuit breaker. The chassis base 200 is fixed in the drawer-type circuit breaker. An installation space is provided inside the chassis base 200. The bundle clamp 500 and part of the busbar 100 are installed in the installation space.

[0085] The mounting frame 300 may be L-shaped. The first portion 310 fits with the busbar 100, and the first portion 310 is connected to the busbar 100 via a fastener. The second portion 320 fits with the bottom frame base 200, and the second portion 320 is connected to the bottom frame base 200 via a fastener.

[0086] Through the above configuration, the chassis base 200 provided in the present application can provide installation space for the bundled clamp 500 and the busbar 100, so that not only can the installation of the bundled clamp 500 and the busbar 100 be more neat, but the chassis base 200 can also play a certain protective role for the bundled clamp 500 and the busbar 100. The present application uses the mounting frame 300 to fix the busbar 100 and the chassis base 200, which increases the installation stability of the busbar.

[0087] Please continue to refer to Figure 7 As shown, a first mounting hole is provided on a first side of the chassis base 200, and the first mounting hole is used for the connection terminal 120 of the busbar 100 to pass through. An isolation baffle 210 is provided on a second side of the chassis base 200, and a second mounting hole 220 is provided on the isolation baffle 210, and the second mounting hole 220 is used for the contact bar 600 to extend into the chassis base 200 and connect with the bundle clamp 500.

[0088] The first side may be a side of the chassis base 200 close to the outside, and the second side may be a side of the chassis base 200 close to the inside of the drawer circuit breaker.

[0089] The first mounting hole may be a through hole provided on the chassis base 200. The first mounting hole may be integrally formed with the chassis base 200 when the chassis base 200 is formed. The first mounting hole may also be provided on the chassis base 200 by carving or drilling after the chassis base 200 is formed. The wiring terminal 120 of the busbar 100 may pass through the first mounting hole to be connected to an external conductive member. The busbar 100 except the wiring terminal 120 is located in the mounting space inside the chassis base 200.

[0090] The isolation baffle 210 may be made of an insulating material. The isolation baffle 210 may be a plate-like structure. The second mounting hole 220 may be a through hole provided on the isolation baffle 210. The second mounting hole 220 may be integrally formed with the isolation baffle 210 when the isolation baffle 210 is formed. The second mounting hole 220 may also be provided on the isolation baffle 210 by carving or drilling after the isolation baffle 210 is formed.

[0091] In summary, the isolation baffle 210 can be used to shield the components within the chassis base 200, thereby reducing the probability of a safety problem caused by an operator accidentally touching the bundle clamp 500 when the bus has been connected to an external conductive component and the bundle clamp 500 has been connected to the bus, but the bundle clamp 500 has not been connected to the contact bar 600.

[0092] like Figure 1 as well as Figure 7As shown, the isolation baffle 210 includes a first plate 211 and a second plate 212, the first plate 211 is fixedly connected to the chassis base 200, and the second plate 212 is slidably connected to the first plate 211. Before the circuit breaker body and the contact bar 600 are installed on the chassis base 200, the second plate 212 can slide relative to the first plate 211 in a first direction OX to shield the internal space of the chassis base 200. When the circuit breaker body and the contact bar 600 are installed on the chassis base 200, the second plate 212 can slide relative to the first plate 211 in a second direction OY to expose the internal space of the chassis base 200, and the second direction OY is opposite to the first direction OX.

[0093] The first plate 211 may be a plate-like structure, and the second plate 212 may also be a plate-like structure. The first plate 211 is fixedly connected to the bottom frame base 200, and the second plate 212 is slidably connected to the first plate 211. The first plate 211 and the second plate 212 are both provided with second mounting holes 220. The two second mounting holes 220 may be the same in size and shape, so that when the second plate 212 slides relative to the first plate 211, the two second mounting holes 220 may overlap, exposing the internal space of the bottom frame base 200.

[0094] The first direction OX may be the same as the direction in which the clamp installation portion 111 is disposed, and the second direction OY is opposite to the first direction OX. Alternatively, the second direction OY may be the same as the direction in which the clamp installation portion 111 is disposed.

[0095] In summary, before the circuit breaker body and the contact bar 600 are installed on the chassis base 200, the second plate 212 can slide relative to the first plate 211 in the first direction OX. At this time, the plate body of the second plate 212 will block the second mounting hole 220 set on the first plate 211, so that the bundle clamp 500 and the busbar 100 in the chassis base 200 will not be exposed to the outside. When the circuit breaker body and the contact bar 600 are installed on the chassis base 200, the second plate 212 can slide relative to the first plate 211 in the second direction OY until the second mounting hole 220 on the first plate 211 is aligned with the second mounting hole 220 on the second plate 212, and the circuit breaker body and the contact bar 600 can be connected with the bundle clamp 500. This arrangement can reduce the probability of safety problems caused by operators accidentally touching the bundle clamp 500 when the circuit breaker body and the contact bar 600 are not connected to the bundle clamp 500, and when the circuit breaker body and the contact bar 600 are installed on the chassis base 200, the isolation baffle 210 will not hinder the installation of the circuit breaker body and the contact bar 600.

[0096] In some possible designs, the busbar includes at least one heat sink connected to the first busbar 150 and / or the second busbar 160 .

[0097] The heat sink may be integrally formed with the first busbar 150 and / or the second busbar 160 when the first busbar 150 and / or the second busbar 160 are formed, or the heat sink may be separately formed with the first busbar 150 and / or the second busbar 160 and then assembled. The heat sink may be prismatic, cylindrical, or plate-shaped. The surfaces of the heat sink, except for the surface connected to the first busbar 150 and / or the second busbar 160, may all be wavy.

[0098] Through the above-mentioned configuration, the present application arranges a heat sink in the bus and connects the heat sink to the first busbar 150 and / or the second busbar 160, so that a portion of the heat generated when the current passes through the busbar is transferred to the heat sink, thereby achieving the effect of assisting the heat dissipation of the busbar, thereby reducing the temperature rise at the busbar and thus reducing the damage to the internal components of the drawer-type circuit breaker caused by excessive temperature, thereby increasing the service life of the drawer-type circuit breaker.

Claims

1. A busbar, applied to a drawer-type circuit breaker, comprising a plurality of contact bars and a plurality of bundled clamps, one end of each bundled clamp being connected to the contact bar, characterized in that: The busbar comprises a busbar; The busbar comprises a bus terminal and a wiring terminal, the wiring terminal is used to be electrically connected to an external conductive member, the bus terminal comprises a plurality of clamp mounting portions, each of the clamp mounting portions is connected to one of the bundle clamps; Wherein, the arrangement direction of the plurality of the clamp mounting portions is perpendicular to the arrangement direction of the plurality of the contact bars, and is perpendicular to the installation direction of the bundle clamps toward the busbars.

2. The busbar according to claim 1, characterized in that: The number of the busbar is one, and the busbar comprises a first segment and a second segment connected to each other, and a non-zero angle exists between the first segment and the second segment; The wiring terminal is arranged at a position of the first segment away from the second segment; The confluence end is arranged at the second segment, and the plurality of clamp mounting portions are arranged at intervals at a side of the second segment away from the first segment.

3. The busbar according to claim 2, characterized in that: The second segment is connected to one side of the first segment; or, The second segment is connected to opposite sides of the first segment.

4. The busbar according to claim 1, characterized in that: The number of the busbars is two, and the busbars include a first busbar and a second busbar; The first busbar comprises a first straight section and a first bent section connected to each other, a non-zero angle is formed between the first straight section and the first bent section, the second busbar is in the shape of a flat plate, and the second busbar comprises a second straight section; The wiring terminal is arranged at a position of the first straight section and the second straight section away from the first bent section; The confluence end is arranged at a portion of the first bending section and / or the second straight section close to the first bending section; The plurality of clamp mounting portions are arranged at intervals on a side of the first bending section away from the first straight section and / or a side of the second straight section close to the first bending section.

5. The busbar according to claim 4, characterized in that: A limiting block is provided on one side of the second straight section close to the first bending section, and the first bending section partly abuts against the limiting block.

6. The busbar according to any one of claims 1 to 4, characterized in that: The drawer-type circuit breaker also includes a chassis base, the bundle clamp and part of the busbar are installed in the chassis base, and the busbar also includes a mounting frame, a first portion of the mounting frame is connected to the busbar, and a second portion of the mounting frame is used to connect to the chassis base.

7. The busbar according to claim 6, characterized in that: A first mounting hole is provided on a first side of the chassis base, and the first mounting hole is used for the wiring terminal of the busbar to pass through; An isolation baffle is provided on the second side of the chassis base, and a second mounting hole is provided on the isolation baffle. The second mounting hole is used for the contact row to extend into the chassis base and connect with the bundle clamp.

8. The busbar according to claim 7, characterized in that: The isolation baffle comprises a first plate and a second plate, the first plate is fixedly connected to the bottom frame base, and the second plate is slidably connected to the first plate; Before the circuit breaker body and the contact row are installed on the chassis base, the second plate can slide relative to the first plate in a first direction to cover the internal space of the chassis base; When the circuit breaker body and the contact row are installed on the chassis base, the second plate can slide relative to the first plate in a second direction to expose the inner space of the chassis base, and the second direction is opposite to the first direction.

9. The busbar according to claim 4, characterized in that: The busbar includes at least one heat sink, and the heat sink is connected to the first busbar and / or the second busbar.

10. A drawer type circuit breaker, characterized in that: It comprises a circuit breaker body, a drawer seat, a contact bar, a bundle clamp and a busbar as claimed in any one of claims 1 to 9; The circuit breaker body is slidably connected to the drawer seat; The bundle clamp and part of the busbar are located in the drawer seat; The first end of the contact row is connected to the bundle clamp, and the second end of the contact row is connected to the circuit breaker body; One end of the busbar located inside the drawer seat is connected to the bundle clamp, and one end of the busbar located outside the drawer seat is used to connect to an external conductive member.

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