Molded case circuit breaker

Abstract

The molded case circuit breaker comprises a surface cover, a control area is arranged on a panel of the surface cover, and at least two control holes are formed in the control area; wherein the periphery of each control hole is surrounded by a circle of first ring-shaped boss, and the first ring-shaped bosses and the panel are integrally formed; the utility model has the characteristic of improving the creepage distance.

Description

Technical Field

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

[0002] With the continuous development of molded case circuit breakers, molded case circuit breakers with human-computer interaction functions are not uncommon. Taking CN219017548U as an example, its upper cover has a key matrix. It can be seen from the attached figure that there are 9 through holes in the key matrix. The 9 through holes here are all exposed for keys. Each two adjacent through holes are basically connected in a plane. Therefore, the creepage distance between adjacent through holes is limited, which is easy to break down and cause damage to the modules of the circuit board.

[0003] Therefore, how to improve the creepage distance of this structure is undoubtedly a question worth considering. Summary of the Invention

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a molded case circuit breaker.

[0005] The present application provides: a molded case circuit breaker, which includes a face cover, a panel of the face cover having an operating area, and the operating area has at least two operating holes; wherein each operating hole is surrounded by a first annular boss, and the first annular boss is integrally formed with the panel.

[0006] In some embodiments of the present application, the number of insulating pads adapted to the first annular boss is further included, the insulating pads are sleeved on the first annular boss, and the insulating pads are connected as a whole or are independent of each other.

[0007] In some embodiments of the present application, the insulating pad includes a main body, a second annular boss and an island boss, the second annular boss and the island boss are arranged on the same surface of the main body; the island boss is surrounded by the second annular boss, and a gap is formed between the second annular boss and the island boss, the first annular boss is inserted in the gap, and the island boss is inserted in the operating hole.

[0008] In some embodiments of the present application, a panel of the face cover has a sunken portion, and viewed from a direction perpendicular to the panel, all of the first annular bosses and insulating pads are located in the sunken portion.

[0009] In some embodiments of the present application, viewed from the height direction of the first annular boss, the first annular boss is located in the sunken portion, and the insulating pad is at least partially located in the sunken portion.

[0010] In some embodiments of the present application, a separation rib is further provided between at least two adjacent first annular bosses.

[0011] In some embodiments of the present application, insulating pads are also included that are adapted to the number of operating holes. The insulating pads are sleeved on the first annular boss, and each adjacent two insulating pads are connected into an integrated structure through a connecting arm; an avoidance groove is opened on the separating rib to allow the corresponding connecting arm to pass through.

[0012] In some embodiments of the present application, the cross-sectional shape of the manipulation hole is circular or polygonal or a combination of circular and polygonal, and the shape of the first annular boss is adapted to the shape of the manipulation hole.

[0013] In some embodiments of the present application, the circuit breaker has a circuit board therein, the circuit board has operating members, the number of the operating members matches the number of the operating holes, and the operating members extend into the corresponding operating holes; the operating members are buttons, knobs, or push buttons.

[0014] In some embodiments of the present application, a first display window is provided on the panel, the first display window is used to expose the display screen, and the display window is located on one side of the operating area;

[0015] In some embodiments of the present application, a second display window is provided on the panel, and the second display window is used to expose the indicator light.

[0016] The beneficial effects of this application include:

[0017] Compared with the prior art, the molded case circuit breaker provided in the present application adds a first ring-shaped boss around each operating hole, which can effectively increase the creepage distance between two adjacent operating holes or increase the creepage distance between the operating hole and other holes (such as the hole where the indicator light is located or the hole where the display screen is located) to prevent breakdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A schematic diagram of the middle cover of the molded case circuit breaker in Example 1 of the present application is shown;

[0020] Figure 2 A schematic diagram of a molded case circuit breaker according to embodiment 1 of the present application is shown;

[0021] Figure 3 A schematic diagram of a molded case circuit breaker with an insulating pad in Example 1 of the present application is shown;

[0022] Figure 4A schematic diagram of an insulating pad in a molded case circuit breaker according to embodiment 1 of the present application is shown;

[0023] Figure 5 A schematic diagram of a molded case circuit breaker with its mask removed is shown in Example 1 of the present application. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present application. Examples of these embodiments are illustrated in the accompanying drawings, where identical or similar reference numerals throughout represent identical or similar elements or elements having identical or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and intended only to explain the present application and are not to be construed as limiting the present application.

[0025] In the description of the present application, it should be understood that 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., indicating orientations or positional relationships, are based on the orientations 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 should not be understood as limiting the present application.

[0026] Furthermore, the terms "primary" and "secondary" 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. Therefore, features specified as "primary" or "secondary" may explicitly or implicitly include one or more of such features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0027] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified or limited, "above" or "below" a main feature may mean that the main feature and the second feature are in direct contact, or that the main feature and the second feature are in indirect contact through an intermediary. Furthermore, "above," "above," and "above" a main feature may mean that the main feature is directly above or diagonally above the second feature, or simply means that the main feature is higher in level than the second feature. "below," "below," and "below" a main feature may mean that the main feature is directly below or diagonally below the second feature, or simply means that the main feature is lower in level than the second feature.

[0029] Example 1

[0030] like Figure 1-Figure 5 As shown, Embodiment 1 of the present application provides a molded case circuit breaker, which includes a cover 100 and a circuit board 200 located inside the circuit breaker housing. The circuit breaker housing includes the cover 100, a middle cover, and a base, and the circuit board 200 is located in the space formed by the cover 100 and the middle cover.

[0031] This type of molded case circuit breaker can be a common electronic molded case circuit breaker, a reclosing molded case circuit breaker, or a measuring switch. These circuit breakers all have a common feature: human-computer interaction, that is, they have operating elements 201 such as buttons, knobs, or push buttons on the circuit board 200. Users can use these operating elements 201 to adjust parameters, control the circuit breaker, or perform other related functions (the specific functions vary depending on the specific form of the circuit breaker. For example, a measuring switch has functions such as parameter adjustment and query, while a reclosing circuit breaker has functions such as electric closing and opening control).

[0032] The front cover 100 has an operating area S100 with six operating holes 101. The number of operating holes 101 can be greater or less, as long as it is greater than two. All operating holes 101 are surrounded by a first annular boss 102, which is located within the operating area S100. The first annular boss 102 is integrally formed with the front cover 100.

[0033] In this way, the creepage distance between the operating holes 101 and the operating holes 101 or between the operating holes 101 and other holes can be increased by the first annular boss 102 to prevent breakdown.

[0034] Here, the cross-sectional shape of the control hole 101 is circular. Of course, the cross-sectional shape of the control hole 101 can also be a polygon such as a triangle, a quadrilateral, a pentagon, or a combination of a polygon and a circle. Here, the term "polygon" does not include regular polygons or irregular polygons. Regardless of the shape of the control hole 101, the shape of the first annular boss 102 will conform to it.

[0035] The number of insulating pads 300 corresponds to the number of first annular bosses 102, and each insulating pad 300 is mounted on the first annular boss 102. Here, all insulating pads 300 are connected together, specifically, each adjacent pair of insulating pads 300 is connected via a connecting arm 301. Of course, the insulating pads can also be independent of each other. Regardless of the method, as long as the insulating pads 300 are mounted on the first annular boss 102, the insulation performance can be further improved.

[0036] The insulating gasket 300 comprises a main body 300a, a second annular boss 300b, and an island boss 300c. Both the second annular boss 300b and the island boss 300c are disposed on the lower surface of the main body 300a, with the island boss 300c located at the center of the second annular boss 300b. This creates a gap 300d between the second annular boss 300b and the island boss 300c, allowing the first annular boss 102 to be inserted into the gap 300d. Furthermore, the island boss 300c extends into the control hole 101.

[0037] The panel of the cover 100 includes a sunken portion S100'. Specifically, the operating area S100 is located within the sunken portion S100'. From a perspective perpendicular to the panel, all first annular bosses 102 and the insulating gasket 300 are located within the sunken portion S100'. This design of the sunken portion S100' further increases the creepage distance between the operating hole 101 and the remaining holes. It also facilitates the installation of the insulating gasket 300 and reduces its overall height after assembly.

[0038] From the height of the first annular boss 102, the first annular boss 102 is always within the sunken portion S100'. The insulating gasket 300 is mostly located within the sunken portion S100', with only a small portion extending beyond the sunken portion S100'. This design further increases the creepage distance between the control hole 101 and the remaining holes, while also facilitating the installation of the insulating gasket 300. Of course, the insulating gasket 300 can also be positioned within the sunken portion S100'.

[0039] The six control holes 101 are divided into three groups of two, with separating ribs 103 located between the first annular projections 102 of the control holes 101 in adjacent groups. Of course, the separating ribs 103 do not necessarily need to be located between the first annular projections 102 of two adjacent groups of control holes 101; they can also be located between the first annular projections 102 of the control holes 101 in the same group. This is sufficient as long as separating ribs 103 are located between at least two adjacent first annular projections 102. This arrangement of separating ribs 103 will help increase the creepage distance between two adjacent groups of control holes 101.

[0040] An escape groove 104 is provided on the separation rib 103 . The design of the escape groove 104 is conducive to the installation of the integrated insulating pad 300 , that is, the escape groove 104 is provided for the connecting arm 301 to pass through.

[0041] For the above-mentioned control hole 101, it is for the control member 201 to penetrate. Here, the control member 201 is the control member 201 on the circuit board 200. In this embodiment, the control member 201 is a button. Of course, in addition to this, the control member 201 can also be a knob or a push button.

[0042] This type of circuit breaker also features a display function. This function is performed using a display screen 202, which is located on a circuit board 200. A first display window S200 is provided on the panel, through which the display screen 202 is exposed. Here, the display window is located above the operating area S100. Display screen 202 displays relevant information about the circuit breaker, such as parameter information, status information, and query history.

[0043] A second display window S300 is provided on the panel, where the second display window S300 is used to expose the indicator light 203. Specifically, the circuit board 200 has an indicator light, which can be exposed through the second display window S300. The user can judge the working status or fault condition of the circuit breaker according to the indicator light.

[0044] Of course, this type of circuit breaker also includes other components such as an operating mechanism, a contact system, etc. These components are irrelevant to the invention of this application and will not be described in detail here.

[0045] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate different embodiments or examples, and features of different embodiments or examples, described in this specification, unless otherwise inconsistent.

[0046] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A molded case circuit breaker comprising a cover, wherein the cover panel has an operating area, and the operating area has at least two operating holes; characterized in that: Each operating hole is surrounded by a first annular boss, and the first annular boss is integrally formed with the panel.

2. A molded case circuit breaker according to claim 1, characterized in that: It also includes insulating pads whose number matches the first circular boss. The insulating pads are sleeved on the first circular boss. The insulating pads are connected as a whole or are independent of each other.

3. The molded case circuit breaker according to claim 2, characterized in that: The insulating pad includes a main body, a second annular boss and an island boss. The second annular boss and the island boss are arranged on the same surface of the main body; the island boss is surrounded by the second annular boss, and a gap is formed between the second annular boss and the island boss. The first annular boss is inserted in the gap, and the island boss is inserted in the operating hole.

4. The molded case circuit breaker according to claim 2, characterized in that: The panel of the cover is provided with a sunken portion. Viewed from a direction perpendicular to the panel, all the first ring-shaped bosses and insulating pads are located in the sunken portion.

5. The molded case circuit breaker according to claim 4, characterized in that: Viewed from the height direction of the first annular boss, the first annular boss is located in the sunken portion, and the insulating pad is at least partially located in the sunken portion.

6. The molded case circuit breaker according to claim 1, characterized in that: A separation rib is provided between at least two adjacent first annular bosses.

7. The molded case circuit breaker according to claim 6, characterized in that: It also includes insulating pads that are adapted to the number of operating holes. The insulating pads are sleeved on the first annular boss, and each adjacent two insulating pads are connected into an integrated structure through a connecting arm; an avoidance groove is opened on the separating rib to allow the corresponding connecting arm to pass through.

8. The molded case circuit breaker according to claim 1, characterized in that: The cross-sectional shape of the manipulation hole is circular or polygonal or a combination of circular and polygonal, and the shape of the first annular boss is adapted to the shape of the manipulation hole.

9. The molded case circuit breaker according to claim 1, characterized in that: The circuit breaker has a circuit board inside, the circuit board has operating members, the number of the operating members matches the number of the operating holes, and the operating members extend into the corresponding operating holes; The operating member is a button, a knob or a push button.

10. The molded case circuit breaker according to claim 1, characterized in that: The panel is provided with a first display window, the first display window being used to expose the display screen, and the display window being located on one side of the operating area; And / or, a second display window is opened on the panel, and the second display window is used for exposing the indicator light.

Images