Wiring structure of circuit breaker

Abstract

The utility model discloses a circuit breaker wiring structure, which comprises a base, the back surface of the base is provided with at least one sampling point and a sampling line corresponding to the sampling point, the back surface of the base is provided with a wiring groove group corresponding to the sampling point, the sampling line is located in the corresponding wiring groove group, and the wiring groove group comprises at least one section of wiring groove; wherein the local width of at least one wiring groove in the same wiring groove group is narrowed, the groove width of the narrowed part is smaller than the wire diameter of the sampling wire, and the narrowed part is in interference fit with the sampling wire; the utility model has the characteristic of stable installation of the sampling line.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and in particular to a wiring structure of a circuit breaker. Background Art

[0002] Some circuit breakers with electronic functions, such as electronic molded case circuit breakers, leakage molded case circuit breakers, fusion switches, measuring switches, etc., are inseparable from the design of circuit boards.

[0003] However, the existing circuit breakers of this type need to sample the main circuit and transmit the sampled signals to the circuit board. These sampling wires are all set on the back of the circuit breaker base. Therefore, many wiring troughs are often opened on the back of the circuit breaker, and these sampling wires are all set inside the wiring troughs. In order to facilitate the installation of workers, the width of the existing wiring troughs is often larger than the sampling wires, but this also brings other problems. The wires are very easy to fall out of the wiring troughs directly, affecting the installation of workers. If the wires fall out and hook onto certain parts of the workbench, it is also very easy to tear off the part of the wire close to the sampling point.

[0004] As shown in CN216671523U, three groups of wiring troughs are provided on the bottom surface of the base of the circuit breaker (there is one wiring trough in each group), and the above structure is adopted.

[0005] Therefore, how to improve the stability of the connection between the sampling wires and the wiring trough group is also a direction worthy of research. Summary of the invention

[0006] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a wiring structure for a circuit breaker.

[0007] The present application provides: a wiring structure of a circuit breaker, comprising a base, at least one sampling point and a sampling line corresponding to the sampling point are arranged on the back of the base, a wiring slot group corresponding to the sampling point is arranged on the back of the base, the sampling line is in the corresponding wiring slot group, and the wiring slot group includes at least one section of wiring slot; wherein at least one wiring slot in the same wiring slot group has a narrowed local width, the slot width at the narrowed width is smaller than the wire diameter of the sampling line, and the narrowed width and the sampling line are in interference fit.

[0008] With this structure, since a narrowed width portion is formed on at least one of the wiring troughs in each group of wiring troughs, an interference fit can be formed between the sampling line through the narrowed width portion, so that the sampling line is not easy to completely fall out of the wiring trough. Compared with the existing technology, this structure effectively improves the stability of the connection between the wire and the wiring trough group.

[0009] In some embodiments of the present application, the narrowing point is close to the end position of the wiring trough in the length direction.

[0010] The sampling lines are often not arranged in a straight line. Sometimes they are bent along the wiring trough group (multiple wiring troughs are not arranged in parallel). The narrowed width is set near the end of the wiring trough in the length direction, so that the interference fit position is closer to the bend, thereby improving the stability of the sampling line installation.

[0011] In some embodiments of the present application, the wiring groove includes a groove bottom, a first groove wall and a second groove wall, a protrusion is arranged on the first groove wall, and the protrusion and the second groove wall form the narrowed width portion.

[0012] In some embodiments of the present application, the wiring groove includes a groove bottom, a first groove wall and a second groove wall, and a protrusion is arranged on the second groove wall, and the protrusion and the first groove wall form the narrowed width portion.

[0013] In some embodiments of the present application, the wiring groove includes a groove bottom, a first groove wall and a second groove wall, and protrusions are provided on the first groove wall and the second groove wall, and the narrowed width portion is formed between the two protrusions.

[0014] There are many ways to shape the narrow width portion, and the three raised structures mentioned above can all be achieved, and the structure is also relatively simple.

[0015] In some embodiments of the present application, at least one narrowed width portion is close to a sampling point, and the distance of the sampling line from the sampling point to the narrowed width portion closest to the sampling point is no more than 15 mm.

[0016] This structure provides a narrowed width area near the sampling point, where a certain preload is generated by the interference fit. Even if the sampling line is slightly pulled, the preload can offset some of the pulling force, thereby increasing the strength of the sampling line at the sampling point.

[0017] In some embodiments of the present application, a wiring channel is provided on the back of the base, and the opening direction of the wiring channel is perpendicular to the back of the base. One end of the sampling line is connected to the sampling point, and the other end enters the wiring channel.

[0018] With this structure, the sampling line can pass through the sampling channel to the front of the base, or to the top of the cover of the circuit breaker to cooperate with the circuit board.

[0019] In some embodiments of the present application, a first recessed area is provided on the back side of the base, the wiring channel is in the first recessed area, and the sampling point is located near the first recessed area; the wiring groove connects the sampling point with the first recessed area, and the narrowing width is located at one end of the wiring groove close to the first recessed area.

[0020] By adopting this structure, the narrowed width is close to the wiring channel, thereby improving the installation stability of the wire.

[0021] In some embodiments of the present application, each wiring trough is provided with narrowed width portions at both ends in the length direction.

[0022] With this structure, by arranging narrowed width portions at both end positions, the installation stability of the sampling line is further improved.

[0023] In some embodiments of the present application, each group of wiring troughs includes at least two sections of wiring troughs, and two adjacent sections of wiring troughs are arranged at intervals and are not arranged in parallel.

[0024] By adopting this structure and the arrangement of the wiring trough group, some components can be avoided, making the overall structure more reasonable.

[0025] In some embodiments of the present application, the wiring trough group includes a first section of wiring trough and a second section of wiring trough, and the second section of wiring trough is arranged parallel to the length direction of the base.

[0026] In some embodiments of the present application, the wiring trough group includes a first section of wiring trough, a second section of wiring trough and a third section of wiring trough, the second section of wiring trough is arranged parallel to the length direction of the base, the third section of wiring trough is arranged parallel to the width direction of the base, and the third section of wiring trough is between the first section of wiring trough and the second section of wiring trough;

[0027] In some embodiments of the present application, the wiring trough group includes a first section of wiring trough, a second section of wiring trough, a third section of wiring trough and a fourth section of wiring trough, the second section of wiring trough is arranged parallel to the length direction of the base, the third section of wiring trough and the fourth section of wiring trough are both arranged parallel to the width direction of the base, the fourth section of wiring trough is located between the first section of wiring trough and the third section of wiring trough, and the third section of wiring trough is located between the fourth section of wiring trough and the second section of wiring trough.

[0028] In some embodiments of the present application, the sampling point is used to implement temperature sampling, current sampling, or voltage sampling of the circuit breaker.

[0029] The sampling point has many uses, which can be temperature sampling, current sampling, or voltage sampling.

[0030] In some embodiments of the present application, the circuit breaker is at least a two-pole circuit breaker, and the number of sampling points is a multiple of the number of poles of the circuit breaker.

[0031] With this structure, the main circuit conductor of each pole can be sampled. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram showing one of the circuit breaker implementation schemes of Example 1 of the present application is shown;

[0034] Figure 2 A bottom view of a circuit breaker implementation scheme of Example 1 of the present application is shown;

[0035] Figure 3 A bottom view of a circuit breaker implementation scheme with a sampling line in Example 1 of the present application is shown;

[0036] Figure 4-6 It shows a schematic structural diagram of three different width narrowing locations in one circuit breaker implementation scheme of Example 1 of the present application;

[0037] Figure 7 A schematic diagram showing another circuit breaker implementation scheme of Example 1 of the present application is shown;

[0038] Figure 8 A bottom view of another circuit breaker implementation scheme of Example 1 of the present application is shown;

[0039] Figure 9-11 A schematic diagram showing the coordination of three different wiring trough groups and sampling lines in another circuit breaker implementation scheme in Example 1 of the present application is shown. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] 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" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, when a main feature is “above” or “below” a second feature, it can mean that the main feature and the second feature are in direct contact, or the main feature and the second feature are in indirect contact through an intermediate medium. Moreover, when a main feature is “above”, “above” or “above” a second feature, it can mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. When a main feature is “below”, “below” or “below” a second feature, it can mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is lower in level than the second feature. Example

[0045] like Figure 1-Figure 11 As shown, embodiment 1 of the present application provides a circuit breaker, which is a circuit breaker with a wiring structure on the back, and these wiring structures can be used to implement the wiring of voltage sampling lines, can also be used to implement the wiring of current sampling lines, and can also be used to implement the wiring of temperature sampling lines.

[0046] The circuit breaker includes a base 1001, and a sampling point P (circular dotted box in the figure) is arranged on the back of the base 1001. The number of sampling points P is a multiple of the number of poles of the circuit breaker. In this embodiment, the number of poles of the circuit breaker is 3, that is, the number of main circuit conductors is a multiple of 3, which can be a temperature sampling point P or a current sampling point P.

[0047] Each main circuit conductor of the circuit breaker includes a first wiring terminal, a second wiring terminal and a static contact, and the sampling point P is used to sample from these components.

[0048] A wiring trough group G is provided on the back of the base 1001 , and the number of the wiring trough groups G corresponds to the number of sampling points P, that is, the sampling line 1100 corresponding to each sampling point P is in the corresponding wiring trough group G.

[0049] A wiring channel 1002 is provided on the back of the base 1001, and the opening direction of the wiring channel 1002 is perpendicular to the back of the base 1001, so that one end of the sampling line 1100 is connected to the sampling point P, enters the wiring channel 1002, and is connected to the circuit board inside the circuit breaker, so that the sampled signal can be fed back to the circuit board.

[0050] Here, each wiring trough group G includes at least one section of wiring trough G0, and at least one wiring trough G0 in each wiring trough group G has a narrowed width. The narrowed width here means that the width of the trough at the narrowed width point S (the square dotted frame in the figure) is smaller than the wire diameter of the sampling line 1100, and the sampling line 1100 can be stuck in the narrowed width point S, which is an interference fit.

[0051] The wiring groove G0 with a narrowing portion S includes a first groove wall G01, a second groove wall G02, and a groove bottom G03. The groove bottom G03 connects the first groove wall G01 and the second groove wall G02. The distance between the first groove wall G01 and the second groove wall G02 forms the groove width. Here, there are many ways to form the narrowing portion S. Three different ways are given as examples to briefly explain the narrowing portion S.

[0052] like Figure 6 As shown, in the first mode, a protrusion G04 is provided on the first groove wall G01, and a narrowing portion S is formed between the protrusion G04 and the second groove wall G02.

[0053] like Figure 5 As shown, in the second mode, a protrusion G04 is provided on the second groove wall G02, and a narrowing portion S is formed between the protrusion G04 and the first groove wall G01.

[0054] like Figure 4 As shown, in the third mode, protrusions G04 are provided on both the first and second groove walls G02, and a narrowing portion S is formed between the two protrusions G04.

[0055] Of course, the above-mentioned protrusion G04 is an example of a chamfered rectangular protrusion G04. In addition, the shape of this protrusion G04 can also be square, triangular, arc, etc., as long as the width can be narrowed to clamp the sampling line 1100.

[0056] The above briefly introduces the formation method of the narrow width S, and the following introduces the location and situation of the narrow width S. The location and situation of the narrow width S are different according to the number of wiring troughs G0 in each wiring trough group G, including the following two situations:

[0057] Case 1: Each wiring duct group G contains only one section of wiring duct G0:

[0058] As one implementation method, Figure 2-3 As shown, each wiring trough group G contains a wiring trough G0, and the wiring channel 1002 is located in a first recessed area 1003. The wiring trough G0 directly connects the sampling point P with the first recessed area 1003. The wiring trough G0 here has two ends in the length direction, and the narrowing width S is located at the end position of the wiring trough G0 close to the first recessed area 1003.

[0059] As another implementation method, Figure 2-3 As shown, each wiring trough group G contains a wiring trough G0, and the wiring channel 1002 is located in a first recessed area 1003. One end of the wiring trough G0 is connected to the sampling point P, and there is a certain distance between the other end and the first recessed area 1003. In this embodiment, the wiring trough G0 has two ends in the length direction, and the number of narrowing widths S is two, which are arranged at the two ends. In this embodiment, in order to ensure that the sampling line 1100 is more stable, a wire trough 1004 is provided near the first recessed area 1003, and the sampling line 1100 enters the first recessed area 1003 after passing through the wire trough 1004.

[0060] Scenario 2: Each wiring trough group G contains at least two sections of wiring troughs G0, and two adjacent sections of wiring troughs G0 are arranged at intervals and are not arranged in parallel:

[0061] As one implementation method, Figure 8-9As shown, each wiring trough group G includes a first section wiring trough G1 and a second section wiring trough G2, and the second section wiring trough G2 is arranged parallel to the length direction of the base 1001. One end of the second section wiring trough G2 is close to the wiring channel 1002, and the other end is close to the first section wiring trough G1, and the first end wiring trough G0 is connected to the sampling point P. The first section wiring trough G1 and the second section wiring trough G2 are arranged at an angle, which is an obtuse angle in this embodiment. In this way, both ends of the length direction of the first section wiring trough G1 and the second section wiring trough G2 are arranged with a narrowed width S.

[0062] As another implementation method, Figure 8 As shown in FIG10 , each wiring trough group G includes a first wiring trough G1, a second wiring trough G2, and a third wiring trough G3. The second wiring trough G2 is arranged parallel to the length direction of the base 1001, and the third wiring trough G3 is arranged parallel to the width direction of the base 1001. One end of the second wiring trough G2 is close to the wiring channel 1002, and the other end is close to one end of the third wiring trough G3. The other end of the third wiring trough G3 is close to the first wiring trough G1, and the first end wiring trough G0 is connected to the sampling point P. The second wiring trough G2 and the third wiring trough G3 are arranged vertically, and the third wiring trough G3 and the first wiring trough G1 are arranged at an obtuse angle. In this way, the first wiring trough G1, the second wiring trough G2, and the third wiring trough G3 are arranged at both ends of the length direction with a narrowed width S.

[0063] As another implementation method, Figure 8 As shown in FIG. 11, each wiring trough group G includes a first wiring trough G1, a second wiring trough G2, a third wiring trough G3 and a fourth wiring trough G4. The second wiring trough G2 is arranged parallel to the length direction of the base 1001, and the third wiring trough G3 and the fourth wiring trough G4 are arranged parallel to the width direction of the base 1001. One end of the second wiring trough G2 is close to the wiring channel 1002, and the other end is close to one end of the third wiring trough G3. The other end of the third wiring trough G3 is close to the fourth wiring trough G4. The other end of the fourth wiring trough G4 is close to the first wiring trough G0, and the first wiring trough G0 is connected to the sampling point P. The second wiring trough G2 and the third wiring trough G3 are arranged vertically, the third wiring trough G3 and the fourth wiring trough G4 are arranged parallelly, and the fourth wiring trough G4 and the first wiring trough G1 are arranged at an obtuse angle. In this manner, narrowed width portions S are provided at both ends of the length direction of the first wiring trough G1, the second wiring trough G2, the third wiring trough G3, and the fourth wiring trough G4.

[0064] In either of the above situations, it can be arranged that there is a narrowed width portion S close to the sampling point P. Here, close to the sampling point P means that the distance between the sampling line 1100 from the sampling point P to the narrowed width portion S is not greater than 15 mm, for example, it can be 14 mm, 13.5 mm, 12 mm, 10 mm, 8.5 mm, 7.7 mm, 6.5 mm, 4.3 mm, 3.3 mm, 2 mm, etc.

[0065] The above are just examples for a certain group of wiring trough group G, and the structure is also applicable to wiring groups in other groups.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary 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 wiring structure for a circuit breaker, comprising a base, wherein at least one sampling point and a sampling line corresponding to the sampling point are arranged on the back of the base, a wiring trough group corresponding to the sampling point is arranged on the back of the base, the sampling line is in the corresponding wiring trough group, and the wiring trough group includes at least one section of wiring trough; characterized in that: At least one wiring trough in the same wiring trough group has a narrowed local width, the trough width at the narrowed width portion is smaller than the wire diameter of the sampling line, and there is an interference fit between the narrowed width portion and the sampling line.

2. The wiring structure of a circuit breaker according to claim 1, characterized in that: The narrowing point is close to the end of the length of the wiring trough.

3. The wiring structure of a circuit breaker according to claim 1, characterized in that: The wiring groove comprises a groove bottom, a first groove wall and a second groove wall, a protrusion is arranged on the first groove wall, and the protrusion and the second groove wall form the narrowed width portion; Or, the wiring groove includes a groove bottom, a first groove wall and a second groove wall, a protrusion is arranged on the second groove wall, and the protrusion and the first groove wall form the narrowed width portion; Alternatively, the wiring groove includes a groove bottom, a first groove wall and a second groove wall, and protrusions are arranged on the first groove wall and the second groove wall, and the narrowed width portion is formed between the two protrusions.

4. The wiring structure of a circuit breaker according to claim 1, characterized in that: At least one narrowing point is close to the sampling point, and the distance from the sampling point to the narrowing point of the sampling line closest to the sampling point is not greater than 15mm.

5. The wiring structure of a circuit breaker according to claim 1, characterized in that: A wiring channel is arranged on the back of the base, and the opening direction of the wiring channel is perpendicular to the back of the base. One end of the sampling line is connected to the sampling point, and the other end enters the wiring channel.

6. The wiring structure of a circuit breaker according to claim 4, characterized in that: A first recessed area is provided on the back of the base, the wiring channel is in the first recessed area, and the sampling point is located near the first recessed area; the wiring groove connects the sampling point with the first recessed area, and the narrowing point is located at one end of the wiring groove close to the first recessed area.

7. The wiring structure of a circuit breaker according to claim 1, characterized in that: Each section of the wiring trough is provided with narrowing portions at both ends in the length direction.

8. A wiring structure of a circuit breaker according to claim 2 or 7, characterized in that: Each wiring trough group includes at least two sections of wiring troughs, and two adjacent sections of wiring troughs are arranged at intervals and are not arranged in parallel.

9. A wiring structure for a circuit breaker according to claim 8, characterized in that: The wiring trough group includes a first section of wiring trough and a second section of wiring trough, and the second section of wiring trough is arranged parallel to the length direction of the base; Or, the wiring trough group includes a first section of wiring trough, a second section of wiring trough and a third section of wiring trough, the second section of wiring trough is arranged in parallel with the length direction of the base, the third section of wiring trough is arranged in parallel with the width direction of the base, and the third section of wiring trough is between the first section of wiring trough and the second section of wiring trough; Or, the wiring trough group includes a first section of wiring trough, a second section of wiring trough, a third section of wiring trough and a fourth section of wiring trough, the second section of wiring trough is arranged parallel to the length direction of the base, the third section of wiring trough and the fourth section of wiring trough are both arranged parallel to the width direction of the base, the fourth section of wiring trough is located between the first section of wiring trough and the third section of wiring trough, and the third section of wiring trough is located between the fourth section of wiring trough and the second section of wiring trough.

10. The wiring structure of a circuit breaker according to claim 1, characterized in that: The sampling point is used to implement temperature sampling, current sampling or voltage sampling of the circuit breaker.

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