Circuit breaker handle and molded case circuit breaker with same

Abstract

The utility model discloses a breaker handle and a molded case circuit breaker with the handle, the handle comprises a bottom and an operation part which is vertical to the arc-shaped bottom and extends out of the breaker, and the operation part is provided with through hanging rope holes on two surfaces along the motion direction of the operation part. Through sliding block holes are formed in the two sides of the operating part in the direction perpendicular to the moving direction of the operating part and parallel to the rotating shaft of the handle, screw fixing holes are formed in the top of the operating part in the direction perpendicular to the moving direction of the operating part, sliding blocks with the two sides extending out of the operating part are installed in the sliding block holes, and the sliding blocks are fixed to the operating part through screws and the screw fixing holes. The molded case circuit breaker comprises an upper cover and the handle, the upper cover is made of a full-transparent or semitransparent material, and the upper cover is provided with chamfers at the edges of the wire inlet and outlet holes towards the edges of the base, so that the problems that in the prior art, the circuit breaker is inconvenient to operate in a type test, the running state of internal components cannot be checked, and the installation of inlet and outlet wires is unfriendly to installation personnel are solved; the beneficial effects that operation is convenient, and safety is improved are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a circuit breaker handle and a molded case circuit breaker with the handle. Background Art

[0002] Since the existing handles do not take into account the convenience of operation in the breaking test, in the type test station, when doing short-circuit breaking tests such as the rated limit short-circuit breaking capacity and the rated operating short-circuit breaking capacity test, it is generally necessary to drill holes on the handle and use a pull rope to operate the handle. People in a safe area pull the handle by pulling the rope to close the switch, which is convenient for the short-circuit closing operation of the circuit breaker. However, drilling holes with a drill will produce falling plastic particles, jam the mechanism, and affect the actual breaking test. In addition, during the normal installation and operation of circuit breakers, high-current circuit breakers are often large in size and heavy in weight. If the structure is unreasonable, it often causes inconvenience to the operator. For example, during installation, some people often point out that the handle of the molded case circuit breaker is small, or the closing and opening operation force is large, and the hand slips. During the actual operation of the circuit breaker, especially the high current, there is often an overload phenomenon due to the large number of load circuit equipment, and some large equipment cannot be powered off. If it trips due to overload, it will cause considerable losses. At this time, the operation of the internal components cannot be seen from the outside, and the fault manifestation is not intuitive. Existing solutions, such as a molded case circuit breaker handle with a handle cover disclosed in the patent document with authorization announcement number CN220456337U, solve the heat dissipation problem by adding a handle cover, or a molded case circuit breaker handle locking structure disclosed in the patent document with application publication number CN117373874A, solve the locking problem by adding a locking structure, both cannot solve the problem to be solved by the present application, and large current molded case circuit breakers are large in size and heavy in weight. The more so, the more the convenience of the installer is not taken into consideration during the design, and it is very difficult to install the incoming and outgoing lines. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present application provides a circuit breaker handle and a molded case circuit breaker with the handle to solve the problems of the prior art that the circuit breaker is inconvenient to operate during type tests, the operating status of internal components cannot be viewed, and the installation of incoming and outgoing lines is unfriendly to installers.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A circuit breaker handle comprises a bottom and an operating part extending out of the circuit breaker perpendicularly to the arc-shaped bottom, wherein the operating part drives the bottom to rotate around the axis of a lower lever in a handle hole on the front surface of the circuit breaker under human operation, the operating part is provided with through hanging rope holes on both surfaces along the movement direction of the operating part, through slider holes are provided on both sides of the operating part perpendicular to the movement direction of the operating part and parallel to the rotation axis direction of the handle, and a screw fixing hole is provided on the top of the operating part perpendicular to the movement direction of the operating part.

[0006] Preferably, a slider is installed in the slider hole, the length of the slider is longer than the length of the slider hole, a screw fixing hole is also opened on the top of the slider, the slider is fixed to the operating part through the operating part and its own screw fixing hole, and the slider holes are exposed on both sides of the slider.

[0007] Preferably, the slider is a rectangular parallelepiped.

[0008] Preferably, the portions of the slider exposed from the slider hole on both sides of the slider parallel to the handle rotation axis are provided with anti-slip stripes or knurling.

[0009] Preferably, the anti-slip stripes are parallel to the rotation axis of the handle.

[0010] Preferably, a removable hole cover is provided in the lanyard hole, and a plurality of connection points are provided between the hole cover and the edge of the hole.

[0011] Preferably, a removable hole cover is provided in the slider hole, and a plurality of connection points are provided between the hole cover and the hole edge.

[0012] Based on the same inventive concept, the present application also discloses a molded case circuit breaker, comprising an upper cover, a base and internal components, wherein the upper cover is mounted on the base, the internal components are mounted in the space formed by the upper cover and the base, the upper cover is provided with a handle hole, and also comprises the above-mentioned circuit breaker handle, the operating part of the handle extends out of the handle hole and rotates around the axis of the lever below, and the upper cover is made of a fully transparent or translucent material.

[0013] Preferably, the upper cover comprises a middle cover and a small cover, the middle cover is provided with a handle hole and a small cover hole, the small cover is mounted on the small cover hole, and the middle cover and the small cover are both made of fully transparent or translucent material.

[0014] Preferably, a plurality of wire inlet and outlet holes are formed on the interface between the upper cover and the base, and chamfers are provided on the edges of the wire inlet and outlet holes facing the base.

[0015] Compared with the prior art, the beneficial effects of this solution are as follows: this solution improves the structure of the circuit breaker handle and small and medium covers, which can be easily installed and disassembled, and can timely observe the performance of the circuit breaker, thereby improving the reliable operation of the circuit breaker. This structural improvement can facilitate the breaking test of the molded case circuit breaker and normal use, and can observe the performance of the circuit breaker in real time. At the same time, it takes into account the convenience of the installers of the incoming and outgoing lines, is more user-friendly to the installers, facilitates the operation, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an upper slider installed in an embodiment of a circuit breaker handle of the present application;

[0017] Figure 2 A schematic diagram of a three-dimensional structure of a circuit breaker handle according to an embodiment of the present application with a hole cover provided thereon;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of an embodiment of a molded case circuit breaker of the present application from a front and side perspective;

[0019] Figure 4 This is a three-dimensional schematic diagram of a transparent upper cover of an embodiment of a molded case circuit breaker of the present application;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of a bottom side perspective of an embodiment of a molded case circuit breaker of the present application;

[0021] Among them, 1-handle, 11-bottom, 12-operating part, 121-hanging rope hole, 1211-hole cover, 122-slider hole, 2-slider, 21-stripes, 3-middle cover, 31-chamfer, 4-small cover, 5-base, 6-inlet and outlet holes. DETAILED DESCRIPTION

[0022] The technical solutions 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 only part of the embodiments of the present application, rather than all of the embodiments.

[0023] This embodiment provides a technical solution: a circuit breaker handle disclosed in this solution includes a bottom 11 and an operating part 12 extending out of the circuit breaker perpendicular to the arc bottom. The operating part drives the bottom 11 to rotate around the axis of the lever below in the handle hole on the front surface of the circuit breaker under the operation of the personnel. The bottom 11 is generally an arc with the center of the circle inside the circuit breaker. The operating part 12 has through hanging rope holes 121 on both surfaces along the movement direction of the operating part 12. Through slider holes are opened on both sides of the operating part 12 perpendicular to the movement direction of the operating part 12 and parallel to the rotation axis of the handle 1. The top of the operating part 12 is perpendicular to the movement direction of the operating part 12. The screw fixing hole in this embodiment uses a bottom hole of 2.5. In this way, the vertical surface of the operating part of the handle mold is opened to facilitate the binding of the pull rope during the breaking test of the molded case circuit breaker, avoid drilling holes with a drill bit during the breaking test, prevent falling plastic particles from blocking the mechanism and affecting the actual breaking test, and also improve the time efficiency of the breaking.

[0024] In view of the small handle of the molded case circuit breaker, the large opening and closing operating force, and the slippery hand, a slider 2 is installed in the slider hole, the length of the slider 2 is longer than the length of the slider hole, and a screw fixing hole is also opened on the top of the slider 2. The slider 2 is fixed to the operating part 12 through the operating part 12 and its own screw fixing hole by screws, and the slider holes are exposed on both sides of the slider. In this embodiment, the slider hole is rectangular, and the slider 2 is a bar-shaped rectangular parallelepiped. The slider hole can also be set as a circle, and the slider 2 is set as a bar. In this embodiment, the parts of the slider holes on both sides of the slider 2 that are parallel to the rotation axis of the handle 1 are provided with anti-slip stripes 21, and can also be set as knurling. When set as anti-slip stripes 12, the anti-slip stripes 21 are parallel to the rotation axis of the handle 1. The anti-slip stripes may also be non-parallel to the rotation axis of the handle 1, but the angle with the rotation axis of the handle 1 is preferably not more than 30°. In this embodiment, one of the screw fixing holes is set at the top of the operating part 12, and a self-tapping screw M2.9*6.5F is used. When the self-tapping screw locks the slider 2, the screw head is exposed at the top of the operating part 12. The screw fixing hole can also be sunken to make the top of the operating part 12 more beautiful, without a convex part, to avoid the situation of hurting the hand when using the operating part 12. While ensuring the strength of the circuit breaker handle, the top of the handle is evacuated and penetrated, which is convenient for operation and saves injection molding materials. Whether the slider 2 is added is optional for customers, and it does not affect the strength of the handle 1.

[0025] In this embodiment, the lanyard hole 121 is circular, and can also be rectangular or other suitable shapes. A removable hole cover is provided in the lanyard hole 121, and a plurality of connection points are provided between the hole cover and the edge of the hole. A removable hole cover is also provided in the slider hole, and a plurality of connection points are provided between the hole cover and the edge of the hole. This arrangement can enable the handle 1 to maintain its complete shape when the lanyard and the slider are not needed, and when the lanyard or the slider is needed, it can be conveniently pressed and opened from one side by hand without causing a jamming mechanism of plastic fragments. After the top of the operating part 12 is sunken at the screw fixing hole, a similar arrangement can be made, and a removable hole cover can be added to achieve the same effect.

[0026] Based on the same inventive concept, the present application also discloses a molded case circuit breaker, including an upper cover, a base 5 and internal components, wherein the upper cover is installed on the base 5, and the internal components are installed in the space formed by the upper cover and the base 5. The upper cover is provided with a handle hole, and also includes the above-mentioned circuit breaker handle 1. The operating part 12 of the handle 1 extends out of the handle hole and rotates around the axis of the lever below. The upper cover is made of a fully transparent or translucent material. In this way, in actual use, when unnecessary tripping is often caused by overload, causing unnecessary production suspension losses to the power company, it is convenient for electricians to observe the operation of the circuit breaker in advance, cut off the load in time, and ensure that the power user can have no power outages.

[0027] In this embodiment, the upper cover includes a middle cover 3 and a small cover 4. The middle cover 3 is provided with a handle hole and a small cover hole. The small cover 4 is covered and installed on the small cover hole. The middle cover 3 and the small cover 4 are both made of fully transparent or translucent materials. In this embodiment, the middle cover 3 and the small cover 4 are both made of PC material. The upper end of the small cover 4 is rotatably connected to the upper edge of the small cover hole of the middle cover 3, and the lower part is fixed to the middle cover 3 with screws.

[0028] A plurality of inlet and outlet holes 6 are provided at the interface between the upper cover and the base 5. In this embodiment, there are three inlet and outlet holes 6 on the upper and lower sides. The upper cover is provided with a chamfer 31 at the edge of the inlet and outlet hole 6 facing the base 5. In this embodiment, the chamfer 31 is actually provided at the corresponding position of the middle cover 3, and a rounded corner R1 is provided to avoid the situation where the installers of the large current molded case circuit breaker are very prickly when installing the inlet and outlet wires. Considering the convenience of the installers, it saves time and effort, and is very convenient.

[0029] In the description of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first", "second", etc. appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] The above is only a preferred specific implementation method of the present scheme, but the protection scope required by the present scheme is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and inventive concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A circuit breaker handle, comprising a bottom (11) and an operating portion (12) extending perpendicularly to the arc-shaped bottom and outward from the circuit breaker, wherein the operating portion drives the bottom (11) to rotate around the axis of a lower lever in a handle hole on the front surface of the circuit breaker under human operation, wherein: The operating part (12) has through rope holes (121) on both surfaces along the moving direction of the operating part (12), through slider holes are opened on both sides of the operating part (12) perpendicular to the moving direction of the operating part (12) and parallel to the rotating axis direction of the handle (1), and a screw fixing hole is opened on the top of the operating part (12) perpendicular to the moving direction of the operating part (12).

2. The circuit breaker handle according to claim 1, characterized in that: A slider (2) is installed in the slider hole. The length of the slider (2) is longer than the length of the slider hole. A screw fixing hole is also opened on the top of the slider (2). The slider (2) is fixed on the operating part (12) through the operating part (12) and its own screw fixing hole. The slider holes are exposed on both sides of the slider.

3. The circuit breaker handle according to claim 2, characterized in that: The sliding block (2) is a strip-shaped rectangular parallelepiped.

4. The circuit breaker handle according to claim 2, characterized in that: The portions of the slider (2) on both sides of the slider (2) that are exposed from the slider hole and are parallel to the rotation axis of the handle (1) are provided with anti-slip stripes (21) or knurling.

5. The circuit breaker handle according to claim 4, characterized in that: The anti-slip stripes (21) are parallel to the rotation axis of the handle (1).

6. The circuit breaker handle according to claim 1, characterized in that: A removable hole cover is arranged in the lanyard hole (121), and a plurality of connection points are arranged between the hole cover and the edge of the hole.

7. The circuit breaker handle according to claim 1, characterized in that: A removable hole cover is arranged in the slide hole, and a plurality of connection points are arranged between the hole cover and the hole edge.

8. A molded case circuit breaker, comprising an upper cover, a base (5) and internal components, wherein the upper cover is mounted on the base (5), the internal components are mounted in a space formed by the upper cover and the base (5), and a handle hole is opened on the upper cover, characterized in that: It also comprises a circuit breaker handle (1) as claimed in any one of claims 1 to 7, wherein the operating portion (12) of the handle (1) extends out of the handle hole and rotates around the axis of the lever below, and the upper cover is made of a fully transparent or translucent material.

9. The molded case circuit breaker according to claim 8, characterized in that: The upper cover comprises a middle cover (3) and a small cover (4); the middle cover (3) is provided with a handle hole and a small cover hole; the small cover (4) is mounted on the small cover hole; and the middle cover (3) and the small cover (4) are both made of fully transparent or semi-transparent material.

10. The molded case circuit breaker according to claim 8, characterized in that: A plurality of wire inlet and outlet holes (6) are formed on the interface between the upper cover and the base (5), and a chamfer (31) is provided on the edge of the wire inlet and outlet holes (6) facing the base (5).

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