Protective door device and circuit breaker

Abstract

The utility model provides a protection door device and a circuit breaker, and belongs to the technical field of electrical equipment. The protection door device comprises a shell, a protection door and a connecting piece. The shell is provided with an installation window. And the protection door shields the edge of the mounting window. The connecting piece is connected with the protection door and further connected with the shell, and when the protection door is opened, the rotating angle of the protection door relative to the shell is larger than 180 degrees. The connecting piece is connected with the protective door and is also connected with the shell, namely, the connecting piece is connected between the protective door and the shell. Through the arrangement, the rotating angle of the protection door relative to the shell can be increased, and the effect that the rotating angle of the protection door relative to the shell is larger than 180 degrees when the protection door is opened can be achieved. Thus, the space occupied when the protection door is opened can be reduced, on one hand, the opened protection door does not hinder a user from operating a control assembly in the circuit breaker, on the other hand, the probability that the protection door is collided when the protection door is opened can be reduced, and the service life of the protection door device is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a protective door device and a circuit breaker. Background Art

[0002] Circuit breakers are important switchgear in power organizations, which can open and close, carry and disconnect current in the circuit. When leakage, overload, short circuit and other faults occur in the system, the circuit breaker can quickly cut off the fault mechanism in the system, or cut off the entire power supply to prevent the fault from expanding and causing greater economic losses and casualties.

[0003] Generally, a protective housing is provided on the circuit breaker, and a protective door is provided on the protective housing. When the protective door is opened, the user can operate the relevant components in the circuit breaker. However, the provision of the protective door in the prior art makes it inconvenient for the user to operate the relevant control components in the circuit breaker. Utility Model Content

[0004] The present application provides a protective door device and a circuit breaker, which can facilitate users to conveniently operate relevant control components in the circuit breaker.

[0005] In a first aspect, the present application provides a protective door device, comprising: a housing, a protective door, and a connecting piece. The housing is provided with an installation window. The protective door is shielded by the edge of the installation window. The connecting piece is connected to the protective door, and the connecting piece is also connected to the housing. When the protective door is opened, the angle of rotation relative to the housing is greater than 180 degrees.

[0006] Through the above solution, the connecting piece is connected to the protection door, and the connecting piece is also connected to the shell, that is, the connecting piece is connected between the protection door and the shell. Such a configuration can increase the rotation angle of the protection door relative to the shell, and can achieve an effect that the rotation angle of the protection door relative to the shell when it is opened is greater than 180 degrees. In this way, the space occupied by the protection door when it is opened can be reduced. On the one hand, the opened protection door will not hinder the user from operating the control components inside the circuit breaker. On the other hand, the probability of the protection door being bumped when it is opened can be reduced, thereby increasing the service life of the protection door device.

[0007] In a possible design, the connecting member is rotatably connected to the protection door, and the connecting member is rotatably connected to the housing. The protection door can rotate relative to the connecting member at a first angle, and the connecting member can rotate relative to the housing at a second angle, and the sum of the first angle and the second angle is greater than 180 degrees.

[0008] Through the above scheme, the coordination between the protection door, the connecting part and the shell is more flexible, the protection door device is easier to use, and the protection door and the connecting part are movably connected, and the connecting part and the shell are movably connected. When any component is aged or damaged, it can be replaced more conveniently, so there will be no problem of affecting the overall life of the protection door device when a part of the protection door device is aged or damaged.

[0009] In a possible design, the connecting member is configured as a connecting rod or a connecting plate. The connecting member is provided with a first shaft, and a first hole is provided at a position of the housing opposite to the first shaft, the first shaft is adapted to the first hole, and the first shaft extends into the first hole, so that the connecting member is rotatably connected to the housing.

[0010] Through the above scheme, the first axis on the connecting member is matched with the first hole on the shell to achieve a rotational connection between the connecting member and the shell. The connection method using the hole-axis matching not only has a simple connection structure, is easy to install and maintain, has high reliability, is easier to manufacture, and can also reduce manufacturing costs, thereby improving the economy of the protective door device.

[0011] In a possible design, the protective door device further includes a mounting member. The mounting member is arranged on the edge and at least partially protrudes from the edge, a first hole is arranged on the portion of the mounting member protruding from the edge, a first mounting groove is arranged at a position of the connecting member opposite to the first hole, and a first axis is arranged on a groove wall of the first mounting groove in the first direction.

[0012] Through the above scheme, a mounting piece is arranged on the shell, and a first mounting groove is arranged on the connecting piece. When the connecting piece is connected to the mounting piece, the position of the first hole on the connecting piece extends into the mounting groove sleeve. In this way, not only can the rotational connection between the connecting piece and the shell be realized, but the mounting piece can also limit the connecting piece in the first direction, thereby improving the use stability of the protective door device and reducing the possibility of misalignment when the connecting piece rotates relative to the shell.

[0013] In a possible design, the connecting member is configured as a connecting rod or a connecting plate. The connecting member is provided with a first hole, and the housing is provided with a first shaft at a position opposite to the first hole, the first shaft is adapted to the first hole, and the first shaft extends into the first hole so that the connecting member is rotatably connected to the housing.

[0014] Through the above scheme, the first axis on the connecting member is matched with the first hole on the shell to achieve a rotational connection between the connecting member and the shell. The connection method using the hole-axis matching not only has a simple connection structure, is easy to install and maintain, has high reliability, is easier to manufacture, and can also reduce manufacturing costs, thereby improving the economy of the protective door device.

[0015] In a possible design, the connecting member is fixedly connected to the protection door, and the connecting member is rotatably connected to the housing, and the connecting member rotates relative to the housing at an angle greater than 180 degrees.

[0016] Through the above solution, since the connecting piece is fixedly connected to the shell, it is more convenient to manufacture, and the protective door device is also simpler to assemble, saving the time cost of the production of the protective door device.

[0017] In a possible design, the connecting piece is configured as a spiral ring, the protection door is provided with a second hole, the shell is provided with a third hole, and the end of the spiral ring passes through the second hole and the third hole, so that the protection door is rotatably connected to the shell through the spiral ring.

[0018] Through the above scheme, the connecting piece is configured as a spiral ring, and by setting a second hole on the protection door and a third hole on the shell, the protection door is connected to the shell using the spiral ring. Not only can the protection door be rotated relative to the shell by an angle greater than 180 degrees when opened, but the spiral ring-shaped connecting piece is simpler to manufacture. Moreover, when the protection door is in the open state, the spiral ring-shaped connecting piece can also play a buffering role for the protection door, reducing the possibility of damage to the protection door when it is bumped, and increasing the service life of the protection door device.

[0019] In a possible design, a limiting protrusion is provided on the edge, and a limiting groove is provided at a position where the connecting member is opposite to the limiting protrusion. Alternatively, a limiting groove is provided on the edge, and a limiting protrusion is provided at a position where the connecting member is opposite to the limiting groove. The limiting protrusion is at least partially located in the limiting groove to limit the movement of the connecting member relative to the housing.

[0020] Through the above scheme, limiting grooves and limiting protrusions are arranged on the connecting piece and the shell, which can further limit the movement between the connecting piece and the shell, thereby reducing the possibility of misalignment between the connecting piece and the shell when the connecting piece rotates relative to the shell, thereby ensuring the stability of the use of the protective door device. Since the connecting piece is made of insulating material and has a certain flexibility, when the movement between the connecting piece and the shell is further limited, it can also reduce the aging phenomenon caused by the long-term shaking of the connecting piece when the connecting piece rotates relative to the shell, thereby increasing the service life of the protective door device.

[0021] In a possible design, a guide groove is provided at the edge of the installation window, and a guide block is provided at a position opposite to the guide groove of the protection door; or a guide block is provided at the edge of the installation window, and a guide groove is provided at a position opposite to the guide block of the protection door. The guide block is at least partially located in the guide groove to provide guidance for the protection door when the protection door is closed.

[0022] Through the above scheme, the cooperation between the guide groove and the guide block can play a guiding role for the protection door during the closing process, thereby reducing the possibility of misalignment between the protection door and the installation window during the closing process, thereby improving the use stability of the protection door device. The provision of the guide groove and the guide block can also reduce the problem of damage to the protection door due to misalignment during the closing process of the protection door, thereby improving the service life of the protection door device.

[0023] In a second aspect, the present application provides a circuit breaker, comprising: the protection door device mentioned in the first aspect above.

[0024] By means of the above scheme, the protection door device is arranged on the circuit breaker, so that the protection door can rotate relative to the housing at an angle greater than 180 degrees when it is opened, thereby reducing the space occupied by the protection door when it is opened, so that the user can operate the relevant control components in the circuit breaker more conveniently, and can also reduce the probability of the protection door being bumped when it is opened, thereby increasing the service life of the circuit breaker.

[0025] The beneficial effects of the circuit breaker provided in the second aspect can be referred to the beneficial effects brought about by the first aspect and the 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 circuit breaker provided in an embodiment of the present application when a protection door is closed.

[0027] Figure 2 A schematic diagram of a circuit breaker protection door opened 180 degrees according to an embodiment of the present application.

[0028] Figure 3 A schematic diagram of a circuit breaker protection door provided in an embodiment of the present application when it is opened 270 degrees.

[0029] Figure 4 A schematic diagram of the structure of a connector provided in an embodiment of the present application.

[0030] Figure 5 An exploded view of a protective door structure provided in an embodiment of the present application.

[0031] Figure 6 for Figure 5 Schematic diagram of the structure of part A.

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

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

[0034] Description of reference numerals:

[0035] 100, housing; 110, mounting window; 111, guide groove; 120, limiting protrusion; 121, second limiting groove; 130, card slot;

[0036] 200, protective door; 210, guide block; 220, clamping block; 230, first foolproof part;

[0037] 300, connecting member; 310, first shaft; 320, first mounting groove; 330, first limiting groove; 331, limiting shaft; 340, second foolproof member;

[0038] 400, mounting parts;

[0039] 500, spiral circle;

[0040] OX, first direction. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] The directional words appearing in the following description are all directions shown in the drawings, and do not limit a specific structure of the present application. 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", etc. 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, rather than indicating or implying 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.

[0047] 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.

[0048] 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.

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

[0050] A circuit breaker is a mechanical switching device that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain period of time and disconnect current under specified abnormal circuit conditions.

[0051] In order to ensure that the circuit breaker can provide effective protection in various situations and prevent dangerous situations such as equipment damage, personal injury or fire when a circuit fails, the circuit breaker is usually equipped with a control component for adjusting the circuit breaker's flowing current and the circuit breaker's maximum breaking current, and the circuit breaker's control component is usually provided with a protective cover.

[0052] Most of the circuit breaker control component protection covers in the prior art are directly connected to the circuit breaker housing by means of a hole-shaft connection or a hinge connection, which results in that the opening and closing angle between the control component protection cover and the circuit breaker housing often does not exceed 180 degrees. When the user operates the relevant control components in the circuit breaker, the protection cover is easily bumped against, making it inconvenient for the user to operate the relevant control components in the circuit breaker. In addition, when the control component protection cover is in an open state, the bumping problem often occurs, and the service life of the control component protection cover will be greatly reduced.

[0053] Based on this, the present application provides a protective door device and a circuit breaker, which can facilitate users to conveniently operate relevant control components in the circuit breaker.

[0054] The protective door device provided by the present application is explained in detail below with reference to the accompanying drawings.

[0055] Figure 1 A schematic diagram of a circuit breaker provided in an embodiment of the present application when a protection door is closed. Figure 2 A schematic diagram of a circuit breaker protection door opened 180 degrees according to an embodiment of the present application. Figure 3 A schematic diagram of a circuit breaker protection door provided in an embodiment of the present application when it is opened 270 degrees.

[0056] like Figures 1 to 3 As shown, the protection door device includes: a housing 100, a protection door 200 and a connecting member 300. The housing 100 is provided with an installation window 110. The protection door 200 is shielded at the edge of the installation window 110. The connecting member 300 is connected to the protection door 200, and the connecting member 300 is also connected to the housing 100. When the protection door 200 is opened, the angle of rotation relative to the housing 100 is greater than 180 degrees.

[0057] The housing 100 includes a cover, a middle seat and a base, and the installation window 110 can be provided on the cover. The housing 100 is generally made of an insulating material, and the housing 100 is arranged in a stepped shape, so that after the circuit breaker is installed in the cabinet, the opening of the cabinet cover can be sleeved on the housing 100, so that only the panel of the circuit breaker is exposed outside the cabinet, which can play a certain protective role on the circuit breaker.

[0058] The installation window 110 may be an operation port provided on the cover, and the control component is provided inside the housing 100, and the user may operate the control component through the installation window 110. The side of the installation window 110 facing away from the inside of the housing 100 may be referred to as an edge of the installation window 110.

[0059] The protection door 200 is used to protect the control components of the circuit breaker. The protection door 200 can be a plate-shaped structure. The protection door 200 is usually made of a transparent insulating material, for example, the protection door 200 can be made of polymethyl methacrylate, polystyrene, polycarbonate and other materials.

[0060] The size of the protection door 200 can be set according to the size of the edge of the installation window 110. The protection door 200 shields the edge of the installation window 110, which means that when the protection door 200 is closed, the edge of the protection door 200 can contact the edge of the installation window 110. In this way, the protection door 200 can shield the installation window 110 to shield and protect the control component.

[0061] The connecting member 300 may be in the shape of a long strip. The connecting member 300 is made of an insulating material. The connecting member 300 has a certain flexibility, so that the connecting member 300 can be deformed when connected to the protection door 200 and when connected to the housing 100, so as to achieve the connection of the connecting member 300 on the protection door 200 and the housing 100.

[0062] The connection between the connecting member 300 and the protective door 200 may be fixed or detachably connected. Similarly, the connection between the connecting member 300 and the housing 100 may be fixed or detachably connected, which is not limited in the present embodiment. The angle of rotation of the protective door 200 relative to the housing 100 when it is opened specifically refers to the angle of rotation of the protective door 200 relative to the surface where the edge of the installation window 110 is located when it is opened.

[0063] In summary, the connector 300 is connected to the protection door 200, and the connector 300 is also connected to the housing 100, that is, the connector 300 is connected between the protection door 200 and the housing 100. With such a configuration, the rotation angle of the protection door 200 relative to the housing 100 can be increased, and the rotation angle of the protection door 200 relative to the housing 100 when it is opened can be greater than 180 degrees. In this way, the space occupied by the protection door 200 when it is opened can be reduced. On the one hand, the opened protection door 200 will not hinder the user from operating the control components inside the circuit breaker. On the other hand, the probability of the protection door 200 being bumped when it is opened can be reduced, thereby increasing the service life of the protection door device.

[0064] There may be multiple ways of connecting the housing 100 and the connector 300, and multiple ways of combining the protection door 200 and the connector 300, so that the protection door 200 can rotate relative to the housing 100 by more than 180 degrees when opened. Two possible implementations are shown below.

[0065] In the first mode, the connecting member 300 is rotatably connected to the protection door 200, and the connecting member 300 is rotatably connected to the housing 100. The protection door 200 can rotate at a first angle relative to the connecting member 300, and the connecting member 300 can rotate at a second angle relative to the housing 100, and the sum of the first angle and the second angle is greater than 180 degrees. For example, the protection door 200 can rotate 180 degrees relative to the connecting member 300, and the connecting member 300 can rotate 90 degrees relative to the housing 100. At this time, the angle of rotation of the protection door 200 relative to the housing 100 when it is opened is 270 degrees.

[0066] When the first combination is selected, the protection door 200 is opened, and while the protection door 200 rotates relative to the connecting member 300, the connecting member 300 rotates relative to the shell 100. Alternatively, the protection door 200 is opened, and first the protection door 200 rotates relative to the connecting member 300. When the protection door 200 rotates to 180 degrees relative to the connecting member 300, the connecting member 300 rotates relative to the shell 100, and at the same time the connecting member 300 drives the protection door 200 to rotate.

[0067] Through the above-mentioned arrangement, the coordination among the protection door 200, the connecting member 300 and the shell 100 is more flexible, and the protection door device is easier to use. In addition, the protection door 200 and the connecting member 300 are movably connected, and the connecting member 300 and the shell 100 are movably connected. When any component is aged or damaged, it can be replaced more conveniently, so there will be no problem that the overall life of the protection door device is affected by aging or damage of a part of the protection door device.

[0068] In the second mode, the connecting member 300 is fixedly connected to the protection door 200, and the connecting member 300 is rotatably connected to the housing 100. The connecting member 300 rotates relative to the housing 100 at an angle greater than 180 degrees.

[0069] When the second combination is selected, when the protection door 200 is opened, the protection door 200 and the connecting member 300 are fixedly connected, so the protection door 200 and the connecting member 300 can rotate together as a whole. When the connecting member 300 is rotatably connected to the housing 100, the protection door 200 and the connecting member 300 rotate relative to the housing 100.

[0070] Through the above arrangement, since the connecting member 300 is fixedly connected to the housing 100, the manufacturing is more convenient, and the protective door device is also easier to assemble, thus saving the time cost of the production of the protective door device.

[0071] To sum up, in order to achieve the effect that the protective door 200 rotates relative to the shell 100 at an angle greater than 180 degrees when it is opened, there can be multiple combinations of the shell 100, the protective door 200 and the connecting piece 300. The present application does not limit the specific combination of the shell 100, the protective door 200 and the connecting piece 300. In actual manufacturing, it can be carried out according to usage requirements or assembly requirements.

[0072] The possible structural forms of the connecting member 300 are introduced below in conjunction with the accompanying drawings.

[0073] Figure 4 A schematic diagram of the structure of a connector provided in an embodiment of the present application. Figure 5 This is an exploded view of a protective door structure provided in an embodiment of the present application. Figure 4 as well as Figure 5 As shown, in some embodiments, the connecting member 300 is configured as a connecting rod or a connecting plate.

[0074] When the connecting member 300 is configured as a connecting rod or a connecting plate, in some possible designs, the connecting member 300 is provided with a first axis 310, and the shell 100 is provided with a first hole at a position opposite to the first axis 310, the first axis 310 is adapted to the first hole, and the first axis 310 extends into the first hole so that the connecting member 300 is rotatably connected to the shell 100.

[0075] The first shaft 310 can be arranged at the end of the connector 300, and the first shaft 310 can be arranged at both ends of the connector 300. Accordingly, the first holes can be arranged at the positions corresponding to the two ends of the connector 300 on the housing 100. In this case, when the connector 300 needs to be connected to the housing 100, the first shaft 310 at one end of the connector 300 can be first inserted into the first hole corresponding to the first shaft 310 on the housing 100. Afterwards, since the connector 300 is made of insulating material and the connector 300 has a certain flexibility, after one end of the connector 300 is connected to the housing 100, the connector 300 can be slightly bent and deformed so that the first shaft 310 at the other end of the connector 300 is inserted into another first hole on the housing 100. Finally, under the action of the elastic force, the connector 300 recovers the deformation, thereby completing the assembly of the connector 300 and the housing 100.

[0076] Through the above-mentioned arrangement, by utilizing the first axis 310 on the connecting member 300 to cooperate with the first hole on the shell 100, the connecting member 300 and the shell 100 can be rotatably connected. The connection method utilizing the hole-axis cooperation not only has a simple connection structure, is easy to install and maintain, has high reliability, is easier to manufacture, can also reduce manufacturing costs, and improves the economy of the protective door device.

[0077] When the connecting member 300 is configured as a connecting rod or a connecting plate, in some other possible designs, the connecting member 300 is provided with a first hole, and the shell 100 is provided with a first shaft 310 at a position opposite to the first hole, the first shaft 310 is adapted to the first hole, and the first shaft 310 extends into the first hole so that the connecting member 300 can be rotatably connected to the shell 100.

[0078] The first hole can be set at the end of the connector 300, and the first hole can be set at both ends of the connector 300. Correspondingly, the first shaft 310 can be set at the position opposite to the two ends of the connector 300 on the housing 100. In this case, when the connector 300 needs to be connected to the housing 100, the first hole set at one end of the connector 300 can be aligned with one of the first shafts 310 on the housing 100, so that the first shaft 310 on the housing 100 is inserted into the first hole corresponding to the first shaft 310. After that, since the connector 300 is made of insulating material and has a certain flexibility, after one end of the connector 300 is connected to the housing 100, the connector 300 can be slightly bent and deformed, so that the first hole set at the other end of the connector 300 is sleeved on the other first shaft 310 set on the housing 100. Finally, under the action of the elastic force, the connector 300 recovers its deformation, thereby completing the assembly of the connector 300 and the housing 100.

[0079] To sum up, the setting position of the first hole and the first axis 310 will not affect the connection between the connecting member 300 and the shell 100. In actual use, the setting position of the first hole and the first axis 310 can be determined according to manufacturing requirements. This application does not limit the setting position of the first hole and the first axis 310, as long as it can meet the requirements of the rotational connection between the connecting member 300 and the shell 100.

[0080] Further, regardless of which of the first hole and the first shaft 310 is disposed on the housing 100 and which is disposed on the connecting member 300, in some embodiments, such as Figure 5 As shown, the protective door device further includes a mounting member 400. The mounting member 400 is arranged at the edge and at least partially protrudes from the edge, a first hole is arranged at the portion of the mounting member 400 protruding from the edge, a first mounting groove 320 is arranged at a position of the connecting member 300 opposite to the first hole, and a first shaft 310 is arranged on the groove wall of the first mounting groove 320 in the first direction OX.

[0081] The mounting member 400 is used to connect the housing 100 and the connecting member 300. The mounting member 400 and the housing 100 may be fixedly connected, or may be detachably connected.

[0082] When the mounting member 400 and the housing 100 are detachably connected, Figure 5 As shown, a mounting hole is provided at the edge of the housing 100, and a groove is provided on the hole wall of the mounting hole. One end of the mounting member 400 is inserted into the mounting hole, and a protrusion is provided on one end of the mounting member 400. When the mounting member 400 is inserted into the mounting hole, the protrusion provided on one end of the mounting member 400 fits with the groove provided below the hole wall of the mounting hole, so that an interference fit is formed between the mounting member 400 and the housing 100, so that the mounting member 400 can be limited, reducing the possibility of the mounting member 400 falling off the housing 100 when the housing 100 shakes or bumps. The other end of the mounting member 400 is provided with a first hole.

[0083] The first hole may be a through hole or a blind hole provided along the first direction OX at the portion of the mounting member 400 protruding from the edge. The side of the through hole or the blind hole facing away from the edge may be closed or open. A first mounting groove 320 is provided at a position of the connecting member 300 opposite to the first hole 120, and a first shaft 310 is provided on the groove wall of the first mounting groove 320 in the first direction OX. When the connecting member 300 is connected to the mounting member 400, the portion of the mounting member 400 protruding from the edge extends into the first mounting groove 320, and the first shaft 310 provided on the groove wall of the first mounting groove 320 is located in the first hole of the mounting member 400. The first direction OX is the axial direction of the shaft when the connecting member 300 rotates relative to the housing 100.

[0084] If a plurality of mounting members 400 are provided on the shell 100, a corresponding number of first mounting grooves 320 should be provided on the connecting member 300, and the first axis 310 provided on the groove wall of the plurality of first mounting grooves 320 should be located on the groove wall on the same side of the plurality of first mounting grooves 320. In this way, when the connecting member 300 and the mounting member 400 are assembled, there is no need to assemble the connecting member 300 and the mounting member 400 by deforming the connecting member 300 multiple times, thereby making the assembly between the connecting member 300 and the mounting member 400 simpler.

[0085] Through the above arrangement, a mounting member 400 is arranged on the shell 100, and a first mounting groove 320 is arranged on the connecting member 300. When the connecting member 300 is connected to the mounting member 400, the position of the first hole on the connecting member 300 extends into the mounting groove. In this way, not only can the rotational connection between the connecting member 300 and the shell 100 be realized, but the mounting member 400 can also limit the connecting member 300 in the first direction OX, thereby improving the use stability of the protective door device and reducing the possibility of misalignment when the connecting member 300 rotates relative to the shell 100.

[0086] Figure 6 for Figure 5 Schematic diagram of the structure of part A in FIG. In some embodiments, Figure 6 As shown, the edge of the installation window 110 may be provided with a limiting protrusion 120, and the position of the connecting member 300 opposite to the limiting protrusion 120 may be provided with a first limiting groove 330. Alternatively, the edge may be provided with a first limiting groove 330, and the position of the connecting member 300 opposite to the first limiting groove 330 may be provided with a limiting protrusion 120. The limiting protrusion 120 is at least partially located in the first limiting groove 330 to limit the movement of the connecting member 300 relative to the housing 100.

[0087] The limiting protrusion 120 cooperates with the first limiting groove 330, and a second limiting groove 121 is provided on the limiting protrusion 120 along the first direction OX, and a limiting shaft 331 is provided on the first limiting groove 330 along the first direction OX. When the limiting protrusion 120 is located in the first limiting groove 330, the limiting shaft 331 is located in the second limiting groove 121. In this way, the movement between the connecting member 300 and the housing 100 can be further limited. Only when the connecting member 300 is in a position perpendicular to the first direction OX, the connecting member 300 can be removed from the housing 100. The stability of the structure of the protective door 200 is increased. It should be noted that the present application does not limit the setting positions of the first limiting groove 330 and the limiting protrusion 120, and it is only necessary to meet the requirement that the first limiting groove 330 and the limiting protrusion 120 are mutually engaged during the assembly process of the connecting member 300 and the housing 100.

[0088] Through the above-mentioned configuration, a first limiting groove 330 and a limiting protrusion 120 are provided on the connecting member 300 and the shell 100, which can further limit the movement between the connecting member 300 and the shell 100, thereby reducing the possibility of misalignment between the connecting member 300 and the shell 100 when the connecting member 300 rotates relative to the shell 100, thereby ensuring the stability of the use of the protective door device. Since the connecting member 300 is made of insulating material and has a certain flexibility, when the movement between the connecting member 300 and the shell 100 is further limited, it can also reduce the aging phenomenon caused by the long-term shaking of the connecting member 300 when the connecting member 300 rotates relative to the shell 100, thereby increasing the service life of the protective door device.

[0089] Figure 7 Schematic diagram of the structure of the spiral coil provided in the embodiment of the present application. In addition to the connection member 300 being configured as a connection rod or a connection plate, in other embodiments, such as Figure 7 As shown, the connecting member 300 can also be configured as a spiral ring 500, the protective door 200 is provided with a second hole, the shell 100 is provided with a third hole, and the end of the spiral ring 500 passes through the second hole and the third hole to rotatably connect the protective door 200 to the shell 100 through the spiral ring 500.

[0090] The spiral coil 500 is made of insulating material and has certain flexibility.

[0091] The protection door 200 may be provided with a plurality of second holes, and the edge of the installation window 110 may be provided with a plurality of third holes at positions opposite to the second holes. The number of the second holes may be the same as the number of the third holes.

[0092] During installation, the first end of the spiral coil 500 can first pass through the second hole provided at one end of the protection door 200, and then pass through the third hole on the housing 100 that is opposite to the second hole provided at one end of the protection door 200. Then, the spiral coil 500 is rotated to make the first end of the spiral coil 500 pass through the remaining second holes and third holes in sequence, until the spiral coil 500 passes through all the second holes and third holes, and the assembly between the protection door 200 and the housing 100 is completed.

[0093] Through the above-mentioned arrangement, the connecting piece 300 is configured as a spiral ring 500. By setting a second hole on the protection door 200 and a third hole on the shell 100, the protection door 200 is connected to the shell 100 using the spiral ring 500. Not only can the protection door 200 be rotated by an angle greater than 180 degrees relative to the shell 100 when opened, but the connecting piece 300 in the shape of a spiral ring 500 is simpler to manufacture. Moreover, when the protection door 200 is in an open state, the connecting piece 300 in the shape of a spiral ring 500 can also play a buffering role for the protection door 200, thereby reducing the possibility of damage to the protection door 200 when it is bumped, and increasing the service life of the protection door device.

[0094] In some other embodiments, the connector 300 may also be configured as a thin-walled structure, one side of the thin-walled structure may be integrally connected to the housing 100 , and the other side of the thin-walled structure may be integrally connected to the protective door 200 .

[0095] The thin-walled structure is made of a thin insulating sheet with elastic deformation. The manufacturing process of the thin-walled structure is simple and the manufacturing cost is low. The assembly process of the thin-walled structure is simple, which can reduce the time cost of assembling the protective door 200 structure. Moreover, the thin-walled structure is easy to replace. When the connecting part 300 is damaged, the maintenance cost of the protective door 200 structure can be reduced.

[0096] Figure 8 A schematic diagram of the structure of the protection door provided in the embodiment of the present application. In some embodiments, Figure 8 As shown, the edge of the installation window 110 may be provided with a guide groove 111, and the position of the protection door 200 opposite to the guide groove 111 may be provided with a guide block 210; or, the edge of the installation window 110 may be provided with a guide block 210, and the position of the protection door 200 opposite to the guide block 210 may be provided with a guide groove 111. The guide block 210 is at least partially located in the guide groove 111 to provide guidance for the protection door 200 when the protection door 200 is closed.

[0097] The guide groove 111 may be an arc-shaped groove, and the corresponding guide block 210 is an arc-shaped protrusion complementary to the shape of the guide groove 111. When the protection door 200 is fully opened, the guide groove 111 and the guide block 210 are separated from each other, and during the closing process of the protection door 200, the guide groove 111 and the guide block 210 gradually contact each other until the protection door 200 is fully closed, and the guide block 210 is at least partially located in the guide groove 111.

[0098] Through the above-mentioned configuration, the cooperation between the guide groove 111 and the guide block 210 can guide the protection door 200 during the closing process, thereby reducing the possibility of misalignment between the protection door 200 and the installation window 110 during the closing process, thereby improving the use stability of the protection door device. The provision of the guide groove 111 and the guide block 210 can also reduce the problem of damage to the protection door 200 due to misalignment during the closing process, thereby improving the service life of the protection door device.

[0099] like Figures 2 to 4 as well as Figure 8 As shown, in some embodiments, a card slot 130 is further provided at the installation window 110 of the shell 100, and a card block 220 is provided on the side of the protective door 200 away from the connecting member 300. The card block 220 cooperates with the card slot 130 provided at the installation window 110 to limit the protective door 200 when the protective door 200 is closed.

[0100] The protection door 200 may also be provided with a first foolproof member 230, and the connection member 300 may be provided with a second foolproof member 340 at a position opposite to the protection door 200. The second foolproof member 340 provided on the connection member 300 may cooperate with the first foolproof member 230 provided on the protection door 200, thereby preventing the connection member 300 and the protection door 200 from being installed reversely.

[0101] The present application also provides a circuit breaker, comprising the protection door device mentioned in the above embodiment.

[0102] Through the above configuration, a protection door device is provided on the circuit breaker, so that the protection door 200 can rotate relative to the housing 100 at an angle greater than 180 degrees when it is opened, thereby reducing the space occupied by the protection door 200 when it is opened, so that the user can operate the relevant control components in the circuit breaker more conveniently, and can also reduce the probability of the protection door 200 being bumped when it is opened, thereby increasing the service life of the circuit breaker.

Claims

1. A protective door device, characterized in that: include: A housing having a mounting window; A protective door shielded at the edge of the installation window; A connecting piece, the connecting piece is connected to the protection door, and the connecting piece is also connected to the shell; when the protection door is opened, the angle at which it can rotate relative to the shell is greater than 180 degrees.

2. The protective door device according to claim 1, characterized in that: The connecting member is rotatably connected to the protection door, and the connecting member is rotatably connected to the housing; The protection door can rotate relative to the connecting member at a first angle, and the connecting member can rotate relative to the shell at a second angle, and the sum of the first angle and the second angle is greater than 180 degrees.

3. The protective door device according to claim 2, characterized in that: The connecting member is configured as a connecting rod or a connecting plate; The connecting member is provided with a first shaft, and the shell is provided with a first hole at a position opposite to the first shaft. The first shaft is matched with the first hole, and the first shaft extends into the first hole, so that the connecting member is rotatably connected to the shell.

4. The protective door device according to claim 3, characterized in that: The protective door device also includes a mounting member; The mounting member is arranged on the edge and at least partially protrudes from the edge, the portion of the mounting member protruding from the edge is provided with the first hole, the connecting member is provided with a first mounting groove at a position opposite to the first hole, and the first mounting groove has a groove wall in the first direction provided with the first axis.

5. The protective door device according to claim 2, characterized in that: The connecting member is configured as a connecting rod or a connecting plate; The connecting member is provided with a first hole, and the shell is provided with a first shaft at a position opposite to the first hole. The first shaft is adapted to the first hole and extends into the first hole so that the connecting member is rotatably connected to the shell.

6. The protective door device according to claim 1, characterized in that: The connecting piece is fixedly connected to the protection door, and the connecting piece is rotatably connected to the shell; The connecting member rotates relative to the housing at an angle greater than 180 degrees.

7. The protective door device according to claim 6, characterized in that: The connecting member is configured as a spiral ring, the protection door is provided with a second hole, the shell is provided with a third hole, and the end of the spiral ring passes through the second hole and the third hole, so that the protection door is rotatably connected to the shell through the spiral ring.

8. The protective door device according to any one of claims 1 to 7, characterized in that: The edge is provided with a limiting protrusion, and the position of the connecting member opposite to the limiting protrusion is provided with a limiting groove; or the edge is provided with a limiting groove, and the position of the connecting member opposite to the limiting groove is provided with a limiting protrusion; The limiting protrusion is at least partially located in the limiting groove to limit the movement of the connecting member relative to the housing.

9. The protective door device according to any one of claims 1 to 7, characterized in that: A guide groove is provided at the edge of the installation window, and a guide block is provided at a position of the protection door opposite to the guide groove; or a guide block is provided at the edge of the installation window, and a guide groove is provided at a position of the protection door opposite to the guide block; The guide block is at least partially located in the guide groove to provide guidance for the protection door when the protection door is closed.

10. A circuit breaker, characterized in that: A protective door device comprising any one of claims 1 to 9.

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