A metering and overload universal circuit breaker housing structure

Abstract

A kind of metering and overload general circuit breaker housing structure.The main problem to be solved is that the shell of conventional circuit breaker cannot simultaneously adapt installation for current sensing ring and bimetallic strip.It is characterized by: it further includes installation groove (11), which is arranged in the shell;Metering assembly or overload assembly is alternatively detachably installed in the shell;The metering assembly includes current sensing ring (51), and the current sensing ring is installed in the installation groove;The overload assembly includes bimetallic strip (61) and shell (62) which is detachably connected with the installation groove, adjusting screw (63) is installed in the shell, and the adjusting screw is arranged opposite to the bimetallic strip.The utility model provides a kind of metering and overload general circuit breaker housing structure, can adapt the installation of current sensing ring and bimetallic strip, and is strong in universality.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically to a circuit breaker housing structure that is suitable for both metering and overload applications. Background Technology

[0002] According to the requirements for intelligent power supply networks in my country, miniature circuit breakers (MCBs), the terminal actuators of power supply networks, need to have tripping and closing functions when executing signals from upstream sources. Especially when combined with smart meters, this enables remote control functions such as automatic tripping for overdue payments and automatic closing and power restoration upon payment. Therefore, MCBs are required to have an automatic reclosing function, meaning that a single control signal can be transmitted to enable remote control, allowing the circuit breaker to automatically close or open without requiring manual operation, effectively saving manpower and resources.

[0003] In scenarios where smart circuit breakers are applicable, different tripping systems are generally adapted according to different currents (such as overload tripping and metering tripping). However, the components required for the two are different. Currently, there is no housing that can be adapted to both the current sensing ring used for metering and the bimetallic strip used for overload, which is not versatile enough. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a circuit breaker housing structure that is universal for both metering and overload, mainly solving the problem that conventional circuit breaker housings cannot be simultaneously adapted to install current sensing loops and bimetallic strips.

[0005] The technical solution of this utility model is as follows:

[0006] A circuit breaker housing structure suitable for both metering and overload applications includes a housing, within which are disposed a stationary contact, a moving contact, and an arc-extinguishing chamber. The moving contact is disposed opposite to the stationary contact.

[0007] A mounting slot is provided inside the housing;

[0008] Either a metering component or an overload component may be detachably installed within the housing;

[0009] The metering component includes a current sensing ring, which is installed in the mounting slot;

[0010] The overload assembly includes a bimetallic strip and a housing detachably connected to the mounting slot. An adjusting screw is installed inside the housing and is positioned opposite to the bimetallic strip.

[0011] The outer casing is provided with a positioning groove, and a nut is installed in the positioning groove. The adjusting screw is connected to the nut.

[0012] The outer wall of the housing engages with the inner wall of the mounting groove.

[0013] The inner wall of the housing is provided with a slot, and the bimetallic strip includes an insert plate, which is inserted into the slot.

[0014] The metering component also includes a connecting plate, one end of which is used to connect to the arc-starting plate, and the other end is used to connect to the wiring frame. The current sensing ring is sleeved on the outside of the connecting plate.

[0015] The bottom of the mounting groove is provided with a groove, and part of the current sensing ring is disposed in the groove, with the groove and the current sensing ring being limited and matched in the height direction.

[0016] The inner wall of the housing is provided with a boss, which contacts the outer walls on both sides of the connecting plate.

[0017] The housing is provided with a gas generating plate, and a U-shaped spring is installed on the gas generating plate. The spring is located on the inner side of the stationary contact.

[0018] The beneficial effects of this utility model are: This utility model provides a circuit breaker housing structure that is suitable for both metering and overload applications, and can be adapted to the installation of current sensing rings and bimetallic strips, exhibiting strong versatility. Attached Figure Description

[0019] Figure 1 This is a perspective view of one embodiment of the present invention.

[0020] Figure 2 This is an internal perspective view of an embodiment of the present invention when the overload component is installed.

[0021] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0022] Figure 4 This is a three-dimensional schematic diagram of an overload component according to an embodiment of the present invention.

[0023] Figure 5 This is a partial perspective view of an embodiment of the present invention when the overload component is installed.

[0024] Figure 6 This is a partial perspective view of the metering component being installed according to one embodiment of the present invention.

[0025] Figure 7 This is an exploded view of the metering component being installed according to one embodiment of the present invention.

[0026] Figure 8 This is a three-dimensional schematic diagram of a gas-generating alarm according to an embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings. A circuit breaker housing structure applicable to both metering and overload includes a housing 1, wherein a stationary contact 2, a moving contact 3, and an arc-extinguishing chamber 4 are provided inside the housing, the moving contact being disposed opposite to the stationary contact, and a mounting groove 11 disposed inside the housing; a metering component or an overload component, one of which is detachably installed inside the housing; the metering component includes a current sensing ring 51, which is installed in the mounting groove; the overload component includes a bimetallic strip 61 and a housing 62 detachably connected to the mounting groove, wherein an adjusting screw 63 is installed inside the housing, the adjusting screw being disposed opposite to the bimetallic strip. The mounting slot can be formed by multiple walls 110 enclosing the inner wall of the housing. It can preferably be set in the lower right corner of the inner wall of the housing. The current sensing ring cooperates with the remote tripping mechanism inside the housing (mostly a circuit board and a gear transmission structure driven by a motor controlled by the circuit board to drive the tripping, which is existing technology and will not be described in detail). The mounting slot can be used to install the current sensing ring or the housing. The housing is equipped with adjusting screws and has adjusting holes that are compatible with the adjusting screws.

[0028] In this embodiment, as shown in the figure, the outer casing is provided with a positioning groove 621, and a nut 622 is installed in the positioning groove. The adjusting screw is connected to the nut. The outer casing can be divided into two halves, which can be connected by screws. When they are connected, the nut is fixed, and then the adjusting screw is installed.

[0029] In this embodiment, as shown in the figure, the outer wall of the outer shell engages with the inner wall of the mounting groove. The mounting groove can be provided on both inner walls of the outer shell, allowing for multiple positioning points and a more stable installation.

[0030] In this embodiment, as shown in the figure, the inner wall of the housing is provided with a slot 13, and the bimetallic strip includes an insert plate 611, which is inserted into the slot. The bimetallic strip is fixed after the insert plate is inserted into the slot. The bimetallic strip can be connected to the wiring frame via a flexible connection, which is existing technology.

[0031] In this embodiment, as shown in the figure, the metering component further includes a connecting plate 52. One end of the connecting plate is used to connect to the arc-starting plate 14, and the other end is used to connect to the wiring frame 15. The current sensing ring is sleeved on the connecting plate. A rigid connection is used.

[0032] In this embodiment, as shown in the figure, the bottom of the mounting groove is provided with a groove 111, and part of the current sensing ring is disposed in the groove, with the groove and the current sensing ring being mutually limited in height direction. This serves as a limiting function.

[0033] In this embodiment, as shown in the figure, the inner wall of the housing is provided with a boss 112, which contacts the outer walls on both sides of the connecting plate, serving as a limiting element.

[0034] In this embodiment, as shown in the figure, a gas-generating plate 7 is provided inside the housing, and a U-shaped spring piece 71 is installed on the gas-generating plate. The spring piece is located inside the stationary contact. This prevents the stationary contact from being excessively deformed under force and provides a certain supporting function. A clamping groove 75 can be provided on the gas-generating plate to clamp the spring piece.

[0035] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A circuit breaker housing structure for both metering and overload applications, comprising a housing (1), wherein a stationary contact (2), a moving contact (3), and an arc-extinguishing chamber (4) are provided within the housing, the moving contact being disposed opposite to the stationary contact, characterized in that: Also includes The mounting groove (11) is provided inside the housing; Either a metering component or an overload component may be detachably installed within the housing; The metering component includes a current sensing ring (51), which is installed in the mounting slot. The overload assembly includes a bimetallic strip (61) and a housing (62) detachably connected to the mounting slot. An adjusting screw (63) is installed inside the housing and is positioned opposite to the bimetallic strip.

2. A circuit breaker housing structure for both metering and overload applications according to claim 1, characterized in that: The outer casing is provided with a positioning groove (621), and a nut (622) is installed in the positioning groove. The adjusting screw is connected to the nut.

3. A circuit breaker housing structure for both metering and overload applications according to claim 2, characterized in that: The outer wall of the housing engages with the inner wall of the mounting groove.

4. A circuit breaker housing structure for both metering and overload applications according to claim 3, characterized in that: The inner wall of the housing is provided with a slot (13), and the bimetallic strip includes an insert plate (611), which is inserted into the slot.

5. A circuit breaker housing structure for both metering and overload applications according to claim 1, characterized in that: The metering component also includes a connecting plate (52), one end of which is used to connect to the arc-starting plate (14), and the other end is used to connect to the wiring frame (15). The current sensing ring is sleeved on the outside of the connecting plate.

6. A circuit breaker housing structure for both metering and overload applications according to claim 5, characterized in that: The bottom of the mounting groove is provided with a groove (111), and part of the current sensing ring is disposed in the groove, and the groove and the current sensing ring are matched in the height direction.

7. A circuit breaker housing structure for both metering and overload applications according to claim 6, characterized in that: The inner wall of the housing is provided with a boss (112), which contacts the outer walls on both sides of the connecting plate.

8. A circuit breaker housing structure for both metering and overload applications according to any one of claims 1-7, characterized in that: The housing is provided with a gas generating plate (7), and a U-shaped spring piece (71) is installed on the gas generating plate. The spring piece is located on the inner side of the stationary contact.

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