Installation structure of indicating piece and residual-current circuit breaker

Abstract

The utility model discloses a mounting structure of an indicating piece and a residual-current circuit breaker. The mounting structure comprises a lower half shell, a rotating shaft, a mechanism side plate, the indicating piece and an elastic rod, the indicating piece is connected with the rotating shaft through the elastic rod, the elastic rod is arranged in a sliding mode relative to the mechanism side plate, the elastic rod drives the indicating piece to rotate through rotation of the rotating shaft, and state indication is presented; wherein the mechanism side plate comprises a first side surface, and the elastic rod and the indicating piece are both located on the first side surface; a first local protrusion is arranged on the first side surface, and the elastic rod is attached to the first local protrusion in the sliding process. A limiting part is further arranged on the first side surface, a limiting groove is formed in the limiting part, and the elastic rod is arranged in the limiting groove in a sliding and penetrating mode; in the direction perpendicular to the first side surface, the vertical distance between the limiting groove and the first local protrusion is larger than the diameter of the elastic rod, the vertical distance between the limiting groove and the first side surface is d, and d is smaller than or equal to 2 mm; the utility model has the characteristic of reducing the interference of the elastic rod.

Description

Technical Field

[0001] The present application relates to a mounting structure for an indicator. Background Art

[0002] RCCB is a residual current circuit breaker that has an indication function.

[0003] The most popular RCCB indicator structure, as shown in CN202676872U, features an indicator member pivotally connected to the mechanism's side plate, with a spring wire connecting the rotating shaft and the indicator member. Because the rotating shaft is controlled by the operating mechanism, its position changes when the switch is connected and disconnected, rotating the indicator member and displaying different indication states.

[0004] However, due to the circuit breaker's complex internal structure, the spring wire is directly attached to the surface of the mechanism's side plate. This presents the following drawbacks: First, the excessive contact area with the mechanism's side plate hinders transmission and results in inaccurate indication. Second, the side plate lacks any restraint on the spring wire, making it susceptible to interference with other components on that side.

[0005] Therefore, those skilled in the art have developed a new indicator structure, such as CN214672443U, which integrates the indicator and the rotating shaft. However, this structure also has certain problems: First, it requires significant structural changes to the circuit breaker, requiring the re-molding of many components, which is not conducive to production. Second, this structure is very difficult to assemble the indicator and the rotating shaft. The rotating shaft needs to rotate with the circuit breaker housing, and the indicator needs to rotate with the side plate of the mechanism, and the indicator also needs to form a linkage with the rotating shaft.

[0006] Therefore, how to further optimize the existing spring wire solution is a direction worthy of research in this field. Summary of the Invention

[0007] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide an installation structure for an indicator.

[0008] The present application provides: an installation structure of an indicator member, which includes a lower half shell, a rotating shaft, a mechanism side plate, an indicator member and an elastic rod; the mechanism side plate is fixed on the lower half shell, the rotating shaft and the lower half shell are rotatably arranged, and the indicator member and the mechanism side plate are rotatably arranged; the elastic rod connects the indicator member to the rotating shaft, and the elastic rod is slidably arranged relative to the mechanism side plate, and the elastic rod drives the indicator member to rotate through the rotation of the rotating shaft to present a status indication; wherein, the mechanism side plate includes a first side surface, and the elastic rod and the indicator member are both on the first side surface; a first local protrusion is provided on the first side surface, and the elastic rod is in contact with the first local protrusion during the sliding process; a limiting portion is also provided on the first side surface, and a limiting groove is provided on the limiting portion, and the elastic rod slides through the limiting groove; in a direction perpendicular to the first side surface, a vertical distance between the limiting groove and the first local protrusion is greater than the diameter of the elastic rod, and the vertical distance between the limiting groove and the first side surface is d, and d≤2mm.

[0009] In some embodiments of the present application, the limiting portion is formed by cutting and bending part of a side panel of the mechanism, and the limiting portion includes a longitudinal portion extending in a direction away from the first side surface and a transverse portion parallel to the first side surface; the transverse portion and the longitudinal portion together form a limiting groove, and d is the vertical distance between the transverse portion and the first side surface.

[0010] In some embodiments of the present application, the elastic rod has a straight rod portion, and as the elastic rod slides, a portion of the rod portion is always located in the limiting groove.

[0011] In some embodiments of the present application, the cross-section of the elastic rod is circular, the contact between the elastic rod and the first local protrusion is line contact, and the length of the contact line between the two is h, 0.3 mm≤h≤0.7 mm.

[0012] In some embodiments of the present application, the indicator member includes an indicating portion, a mounting portion and a connecting portion, and the indicating portion and the connecting portion are arranged on both sides of the mounting portion; the indicating portion has a first indicating surface and a second indicating surface; the mounting portion has a clasp, and a mounting hole is provided on the side plate of the mechanism, and the clasp passes through the mounting hole and is buckled on the second side surface of the side plate of the mechanism, and the clasp can be rotated relative to the mounting hole to realize the rotation setting of the indicator member and the side plate of the mechanism; a through hole is provided on the connecting portion, and the elastic rod is hooked on the through hole.

[0013] In some embodiments of the present application, there is a first bulge on the first side surface, the vertical distance between the first bulge and the first side surface is not less than the vertical distance between the first local protrusion and the first side surface, and the mounting hole is opened on the first bulge; the vertical distance between the connecting portion and the first side surface is greater than the vertical distance between the first bulge and the first side surface, and the vertical distance between the connecting portion and the first side surface is not greater than d.

[0014] In some embodiments of the present application, the first convex bump is formed by punching a portion of the mechanism side plate and / or the first local protrusion is formed by punching a portion of the mechanism side plate.

[0015] In some embodiments of the present application, a slot is provided on the rotating shaft, and the first end of the elastic rod is a bent structure, which is inserted into the slot.

[0016] In some embodiments of the present application, the elastic rod is a spring wire.

[0017] A leakage circuit breaker comprises an operating mechanism and the installation structure of the above-mentioned indicator, wherein the operating mechanism is connected to the rotating shaft and is used to control the rotation of the rotating shaft.

[0018] Compared with the prior art, this application has the following advantages:

[0019] By making the first local protrusions stick to each other, the contact area between the elastic rod and the first side surface is reduced, the transmission loss caused by friction is reduced, and the indication effect can be made as accurate as possible.

[0020] The design of the limiting portion and the limiting groove allows the elastic rod to slide through the limiting groove. The limiting portion prevents the elastic rod from deviating too far from the first side surface, thereby avoiding interference between the elastic rod and other components of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A three-dimensional diagram of an earth leakage circuit breaker according to an embodiment of the present application is shown;

[0023] Figure 2 A schematic diagram of the leakage circuit breaker according to the embodiment of the present application without the upper housing is shown;

[0024] Figure 3 A schematic diagram showing the installation structure of the indicator in an embodiment of the present application is shown;

[0025] Figure 4 A side view of the installation structure of the indicator in the embodiment of the present application is shown;

[0026] Figure 5 A schematic diagram of a side panel of the mechanism in an embodiment of the present application is shown;

[0027] Figure 6A schematic diagram of the elastic rod and the side plate of the mechanism in an embodiment of the present application is shown;

[0028] Figure 7 A schematic diagram of an indicator in an embodiment of the present application is shown;

[0029] Figure 8 A schematic diagram of the indicator and the mechanism side panel in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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 being referred to. Therefore, features specified as "first" or "second" 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.

[0033] 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.

[0034] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. Example

[0035] like Figure 1-8 As shown, the embodiment of the present application is a leakage circuit breaker, which includes an upper shell 100, a lower shell 200 and a circuit breaker assembly arranged in the upper and lower shells 100, 200.

[0036] The upper housing 100 and the lower housing 200 are fastened together by bolts, forming a space inside which the circuit breaker assembly is disposed. Of course, in addition to bolt fastening, the upper housing 100 and the lower housing 200 may also be fastened by rivets or clamping, or a combination of these fastening methods.

[0037] The circuit breaker assembly includes a contact system, an operating mechanism, an arc extinguishing system, an indicator 300, and the like.

[0038] The contact system includes a rotating shaft 400, a moving contact, and a stationary contact. The rotating shaft 400 is rotatably connected to the lower housing 200. The moving contact, mounted on the rotating shaft 400, moves with the rotating shaft 400. The stationary contact mates with the moving contact. Rotation of the rotating shaft 400 causes the moving and stationary contacts to engage and disengage, thereby connecting and disconnecting the circuit breaker. In other words, the rotating shaft 400 has two positions, corresponding to one in which the moving and stationary contacts engage and one in which they disengage.

[0039] The mechanism side plate 600 is fixed to the lower housing 200 and is provided with an operating mechanism. The operating mechanism is linked with the rotating shaft 400, and the rotating shaft 400 is rotated by the operating mechanism. The specific structure of the operating mechanism is conventional in the art and will not be described here.

[0040] The arc extinguishing system is arranged near the moving and static contacts and is used to extinguish the arc generated when the moving and static contacts are separated.

[0041] The installation structure of the indicator 300 is as follows:

[0042] The elastic rod 500 has a first end 501 connected to the rotating shaft 400 and a second end 502 connected to the indicator 300. Therefore, when the rotating shaft 400 rotates, the indicator 300 can be pulled to rotate by the elastic rod 500.

[0043] Here, the first end 501 of the elastic rod 500 is a bent structure, hooked in the slot 401 of the rotating shaft 400. The bent structure here is L-shaped, of course, it can also be V-shaped.

[0044] The elastic rod 500 here is a spring wire, and the cross-section of the elastic rod 500 is circular.

[0045] The elastic rod 500 is positioned on the first side surface 601 and is configured for sliding movement. A first localized protrusion 601a is formed on the first side surface 601. When sliding, the elastic rod 500 abuts against the first localized protrusion 601a, reducing the contact area between the elastic rod 500 and the first side surface 601 and lowering resistance. The contact between the elastic rod 500 and the first localized protrusion 601a is linear, with a contact line length of h, which is 0.6 mm. Other parameters, such as h, can also be used, as long as 0.3 mm ≤ h ≤ 0.7 mm are satisfied. The first localized protrusion 601a is formed by partially stamping the mechanism side plate 600.

[0046] A limiting portion 601b is also provided on the first side surface 601. This limiting portion 601b includes a limiting groove 601c, into which a portion of the elastic rod 500 slides. In a direction perpendicular to the first side surface 601, the vertical distance between the limiting groove 601c and the first local protrusion 601a is greater than the diameter of the elastic rod 500. The vertical distance between the limiting groove 601c and the first side surface 601 is d, where d is ≤ 2 mm. This design of the limiting portion 601b prevents the elastic rod 500 from deviating too far from the first side surface 601, preventing interference between the elastic rod 500 and other components of the circuit breaker, which could affect transmission.

[0047] Here, the limiting portion 601b is formed by cutting and bending a portion of the mechanism side panel 600. The limiting portion 601b is roughly L-shaped, comprising a longitudinal portion 601b1 and a transverse portion 601b2. The longitudinal portion 601b1 extends away from the first side surface 601, and the transverse portion 601b2 is connected to the longitudinal portion 601b1 and parallel to the first side surface 601. The vertical distance d above is the vertical distance between the transverse portion 601b2 and the first side surface 601. This limiting portion 601b is very simple to form and does not require additional components.

[0048] Here, the elastic rod 500 has a straight rod portion 500a that passes through the limiting groove 601c. During the sliding process of the elastic rod 500, the rod portion 500a is always partially within the limiting groove 601c. This design of the rod portion 500a facilitates the insertion of the limiting groove 601c. At the same time, the straight rod portion 500a facilitates structural design, minimizing the impact of the limiting groove 601c on the elastic rod 500.

[0049] The indicator member 300 is rotatably mounted on the mechanism side plate 600. The indicator member 300 comprises an indicating portion 301, a mounting portion 302, and a connecting portion 303. The mechanism side plate 600 has a mounting hole 601e. The mounting portion 302 has a latch 302a that passes through the mounting hole 601e and latches onto the second side surface 602 of the mechanism side plate 600. The latch 302a is rotatable relative to the mounting hole 601e, thereby forming a rotational connection between the indicator member 300 and the mechanism side plate 600 via the latch 302a.

[0050] The indicator portion 301 has a first indicator surface 301a and a second indicator surface 301b. The first indicator surface 301a and the second indicator surface 301b correspond to the open and closed states of the circuit breaker respectively.

[0051] A through hole 303 a is formed on the connecting portion 303 , and the second end 502 of the elastic rod 500 is hooked in the through hole 303 a , so that the elastic rod 500 can pull the indicator 300 to rotate when sliding.

[0052] Here, the connecting portion 303 and the indicating portion 301 are respectively arranged on both sides of the mounting portion 302 , specifically, on both sides of the rotation center of the indicating member 300 .

[0053] Here, there is a first bulge 601d on the first side surface 601, and the vertical distance between the first bulge 601d and the first side surface 601 is not less than the vertical distance between the first local protrusion 601a and the first side surface 601, and the mounting hole 601e is opened on the first bulge 601d, that is, the mounting part 302 is installed on the first bulge 601d.

[0054] The vertical distance between the connecting portion 303 and the first side surface 601 is greater than the vertical distance between the first convex hull 601d and the first side surface 601, and the vertical distance between the connecting portion 303 and the first side surface 601 is not greater than d.

[0055] Such a design of the connecting portion 303 is conducive to the cooperation between the second end 502 of the elastic rod 500 and the connecting portion 303, and the second end 502 of the elastic rod 500 is installed in the reserved space as much as possible.

[0056] Here, the first convex bump 601d is formed by partially punching the mechanism side plate 600 .

[0057] 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.

[0058] 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. An indicator mounting structure comprising a lower half shell, a rotating shaft, a mechanism side plate, an indicator, and an elastic rod; the mechanism side plate is fixed to the lower half shell, the rotating shaft and the lower half shell are rotatably arranged, and the indicator and the mechanism side plate are rotatably arranged; the elastic rod connects the indicator to the rotating shaft, and the elastic rod is slidably arranged relative to the mechanism side plate. The rotation of the rotating shaft causes the elastic rod to drive the indicator to rotate, thereby presenting a status indication; the characteristics are: The side plate of the mechanism includes a first side surface, and the elastic rod and the indicator are both located on the first side surface; a first local protrusion is provided on the first side surface, and the elastic rod is in contact with the first local protrusion during sliding; a limiting portion is also provided on the first side surface, and a limiting groove is provided on the limiting portion, and the elastic rod slides through the limiting groove; in a direction perpendicular to the first side surface, the vertical distance between the limiting groove and the first local protrusion is greater than the diameter of the elastic rod, and the vertical distance between the limiting groove and the first side surface is d, d≤2mm.

2. The installation structure of an indicator according to claim 1, characterized in that: The limiting part is formed by cutting and bending part of the side panel of the mechanism. The limiting part includes a longitudinal part extending in a direction away from the first side surface and a transverse part parallel to the first side surface; the transverse part and the longitudinal part together form a limiting groove, and d is the vertical distance between the transverse part and the first side surface.

3. The installation structure of an indicator according to claim 1, characterized in that: The elastic rod has a straight rod portion, and as the elastic rod slides, a portion of the rod portion is always located in the limiting groove.

4. The installation structure of an indicator according to claim 1, characterized in that: The cross-section of the elastic rod is circular, and the contact between the elastic rod and the first local protrusion is line contact. The length of the contact line between the two is h, and 0.3mm≤h≤0.7mm.

5. The installation structure of an indicator according to claim 1, characterized in that: The indicator member includes an indicating portion, a mounting portion and a connecting portion, and the indicating portion and the connecting portion are arranged on both sides of the mounting portion; the indicating portion has a first indicating surface and a second indicating surface; the mounting portion has a buckle claw, and a mounting hole is provided on the mechanism side plate, and the buckle claw passes through the mounting hole and buckles on the second side surface of the mechanism side plate, and the buckle claw can rotate relative to the mounting hole to realize the rotation setting of the indicator member and the mechanism side plate; a through hole is provided on the connecting portion, and the elastic rod is hooked on the through hole.

6. The installation structure of an indicator according to claim 5, characterized in that: There is a first bulge on the first side surface, the vertical distance between the first bulge and the first side surface is not less than the vertical distance between the first local protrusion and the first side surface, and the mounting hole is opened on the first bulge; the vertical distance between the connecting portion and the first side surface is greater than the vertical distance between the first bulge and the first side surface, and the vertical distance between the connecting portion and the first side surface is not greater than d.

7. The installation structure of an indicator according to claim 6, characterized in that: The first convex bump is formed by punching a portion of the mechanism side plate and / or the first local protrusion is formed by punching a portion of the mechanism side plate.

8. The installation structure of an indicator according to claim 1, characterized in that: A clamping slot is provided on the rotating shaft, and the first end of the elastic rod is a bent structure, which is clamped into the clamping slot.

9. The installation structure of an indicator according to claim 1, characterized in that: The elastic rod is a spring wire.

10. A leakage circuit breaker, characterized in that: The invention comprises an operating mechanism and an installation structure of an indicator according to any one of claims 1 to 9, wherein the operating mechanism is connected to the rotating shaft and is used to control the rotation of the rotating shaft.

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