Mounting structure of residual-current circuit breaker

Abstract

The utility model discloses an installation structure of a residual-current circuit breaker. The installation structure comprises at least one circuit breaker electrode and a drain electrode. The circuit breaker electrode comprises a circuit breaker shell, and the drain electrode comprises an electric leakage shell; wherein the electric leakage shell is provided with a positioning boss and at least two clamping hooks, the positioning boss and any two clamping hooks form triangular arrangement, and triangles in the triangular arrangement are acute triangles; a clamping groove matched with the clamping hook and a positioning groove matched with the positioning boss are formed in the circuit breaker shell. The electric leakage shell is spliced to one side of the circuit breaker shell through the clamping hook and the positioning boss. The installation structure has the advantage of being stable in installation.

Description

Technical Field

[0001] The utility model relates to a leakage circuit breaker, in particular to an installation structure of a leakage circuit breaker. Background Art

[0002] In the field of miniature circuit breakers, leakage circuit breakers are a relatively common type. Existing leakage circuit breakers include a circuit breaker module (commonly known as the air switch pole) and a leakage module (commonly known as the leakage pole). Usually, according to the number of air switch poles of the circuit breaker, they are divided into two-pole leakage circuit breakers (one circuit breaker pole and one leakage module pole) and four-pole leakage circuit breakers (three circuit breaker poles and one leakage module pole).

[0003] The existing leakage module and the circuit breaker module are installed by assembling, but the existing installation structure is not very stable. Therefore, how to achieve a more stable installation of the leakage module and the circuit breaker module is a problem worthy of consideration. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, and aims to provide an installation structure of a leakage circuit breaker, which has the characteristic of stable installation.

[0005] The utility model provides an installation structure of a leakage circuit breaker, which includes at least one circuit breaker pole and one leakage pole; the circuit breaker pole includes a circuit breaker housing, and the leakage pole includes a leakage housing; wherein, a positioning boss and at least two hooks are arranged on the leakage housing, and a triangular arrangement is formed between the positioning boss and any two hooks, and the triangle in this triangular arrangement is an acute triangle; a slot matching with the hook and a positioning slot matching with the positioning boss are opened on the circuit breaker housing, and the leakage housing is spliced on one side of the circuit breaker housing through the hook and the positioning boss.

[0006] In some embodiments of the present application, the leakage housing includes an upper cover and a lower seat which are fixedly connected to each other, and both the upper cover and the lower seat have at least one hook.

[0007] In some embodiments of the present application, a first card rail groove is arranged on the leakage housing, a second card rail groove is arranged on the circuit breaker housing, and at least one hook is arranged at the first card rail groove and the corresponding slot is arranged at the second card rail groove.

[0008] In some embodiments of the present application, the hook provided at the first card rail groove is the first hook, and the card slot corresponding to the first hook is the first card slot; the first hook includes a connecting portion and a engaging portion, and the engaging portion is connected to the leakage housing through the connecting portion to form a clamping gap; the first hook is inserted into the interior of the circuit breaker housing through the first card slot, so that a part of the circuit breaker housing is in the clamping gap; the connecting portion has a fitting surface that fits with the circuit breaker housing, and the fitting surface and the bottom surface of the circuit breaker housing are arranged at an acute angle.

[0009] In some embodiments of the present application, at least two riveting holes are provided on the circuit breaker housing, and the positioning groove is one of the riveting holes.

[0010] In some embodiments of the present application, a handle is rotatably provided on the circuit breaker housing, and the positioning groove is located at the rotation center of the handle.

[0011] In some embodiments of the present application, a first terminal portion and a second terminal portion are respectively provided on both sides in the length direction of the circuit breaker housing, and the card slot corresponding to at least one hook is provided on the second terminal portion.

[0012] In some embodiments of the present application, a protective cover is further included. The protective cover is fixedly connected to the first terminal portion and / or the leakage housing in a clamping manner to cover the first terminal portion; the protective cover has an inner cavity, the first terminal portion has a wire passing hole, and the leakage housing has a notch, and the wire passing hole communicates with the notch through the inner cavity.

[0013] In some embodiments of the present application, the protective cover has a fitting portion that fits with the outer shape of the notch, and the fitting portion is fixedly connected to the portion of the leakage housing at the notch in a clamping manner.

[0014] In some embodiments of the present application, the protective cover has a first clamping protrusion, and an accessory assembly slot is provided on the side surface of the circuit breaker housing. The first clamping protrusion is in clamping cooperation with the accessory assembly slot.

[0015] In some embodiments of the present application, the protective cover has a first positioning post, and a first positioning hole is provided on the first terminal portion. The first positioning post is in positioning cooperation with the first positioning hole.

[0016] In some embodiments of the present application, the protective cover has a hook, and a bayonet is provided on the leakage housing. The hook and the bayonet form a clamping cooperation.

[0017] In some embodiments of the present application, a first barb is provided on the leakage housing, and a card hole is provided on the protective cover. The first barb and the card hole form a clamping cooperation.

[0018] In some embodiments of the present application, the first terminal portion has a tool hole, and the protective cover has a second barb. The second barb penetrates into the tool hole and hooks on the inner wall of the first terminal portion.

[0019] In some embodiments of the present application, a tool hole is provided on the first terminal portion, and a shielding portion that completely shields the tool hole is provided on the shield.

[0020] Advantages of the present application compared with the prior art:

[0021] By adopting this cooperation structure of the hook and the positioning boss, and a triangular arrangement is formed between the positioning boss and any two hooks, and the triangle in this triangular arrangement is an acute triangle. Using this arrangement method in combination with the clamping structure can effectively ensure the overall strength after clamping. It is equivalent to being limited in the other five directions except the assembly direction, and has the characteristics of stable structure and high strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Shows a schematic diagram of the leakage circuit breaker according to an embodiment of the present invention;

[0024] Figure 2 Shows an exploded view of the leakage circuit breaker according to an embodiment of the present invention;

[0025] Figure 3 Shows a schematic diagram of the breaker pole according to an embodiment of the present invention;

[0026] Figure 4 Shows a schematic diagram of the leakage pole according to an embodiment of the present invention;

[0027] Figure 5 Shows a schematic diagram of the shield according to an embodiment of the present invention;

[0028] Figure 6 Shows a schematic diagram of the leakage circuit breaker after removing the shield according to an embodiment of the present invention;

[0029] Figure 7 Shows an axonometric view of the leakage pole according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model 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 operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0033] In the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. Embodiment

[0035] As Figures 1-7 shown, an embodiment of the present utility model is a leakage circuit breaker.

[0036] The leakage circuit breaker can achieve the function of leakage protection. In this embodiment, the leakage circuit breaker includes a leakage electrode N and a circuit breaker pole P, commonly known as the structure of 1P+N.

[0037] For the circuit breaker pole P, it includes a circuit breaker housing 100 and components arranged inside the circuit breaker housing 100, such as an arc extinguishing chamber, an operating mechanism, a terminal, a thermal release, a magnetic release, etc. The structural functions of these components are common means in this field and will not be elaborated here.

[0038] The circuit breaker housing 100 includes a left housing 101 and a right housing 102, and the left housing 101 and the right housing 102 are fixed by riveting. Therefore, there are a plurality of riveting holes 103 on the side surfaces of the left housing 101 and the right housing 102, and one of the riveting holes 103 is located at the rotation center of the handle 104 of the operating mechanism.

[0039] For the leakage electrode N, it includes a leakage housing 200 and a leakage circuit board, a zero-sequence current transformer, a terminal, etc. arranged inside the leakage housing 200.

[0040] In this embodiment, a positioning boss 201 and two hooks 202 are arranged on the leakage housing 200. Here, the positioning boss 201 and the two hooks 202 are arranged in a triangular pattern, and the triangle is an acute triangle. Two clamping grooves 105 and a positioning groove 103' are formed on the circuit breaker housing 100. The positioning groove 103' is in positioning cooperation with the positioning boss 201, and the clamping grooves 105 correspond to the hooks 202 one by one to form a clamping fixation. The leakage housing 200 is spliced on one side of the circuit breaker housing 100 through the hooks 202 and the positioning boss 201. Of course, the number of the hooks 202 here can also be other numbers, as long as it can ensure that an acute triangle distribution is formed by any two hooks 202 and the positioning groove 103'.

[0041] In this embodiment, since the leakage housing 200 is divided into an upper cover 210 and a lower seat 220, the upper cover 210 and the lower seat 220 are fixed by clamping. Of course, here, the upper cover 210 and the lower seat 220 can also be fixed by screws, or even fixed by clamping and screws at the same time. For the upper cover 210 and the lower seat 220, they both include at least one hook 202.

[0042] On the live leakage housing 200, there is a first rail groove 230, which is also opened on the lower base 220. The first rail groove 230 is used to engage with the DIN rail. Corresponding to this, on the circuit breaker housing 100, there is a second rail groove 110, which is opened on both the left housing 101 and the right housing 102 at the same time. The hook 202 on the lower base 220 is arranged near the first rail groove 230, that is, at the position of the first rail groove 230, specifically at the corner position of the first rail groove 230. This hook 202 here is called the first hook 202a, and the corresponding card slot 105 is the first card slot 105a, and the first card slot 105a is located near the second rail groove 110.

[0043] Here, the first hook 202a includes a connecting portion 202a1 and a engaging portion 202a2. The engaging portion 202a2 is connected to the live leakage housing 200 through the connecting portion 202a1 to form a clamping gap 202a3. The first hook 202a is inserted into the circuit breaker housing 100 through the first card slot 105a, so that a part of the circuit breaker housing 100 is in the clamping gap 202a3. Here, the surface 202a4 where the connecting portion 202a1 fits with the circuit breaker housing 100 is an inclined surface. Of course, this inclined surface is relative. It is an inclined surface relative to the bottom surface of the circuit breaker housing 100. Specifically, the angle A between the fitting surface 202a4 and the bottom surface of the circuit breaker housing 100 is an acute angle. Such a design will be conducive to forming a reliable clamping structure.

[0044] For the circuit breaker housing 100, on both sides in its length direction, there are respectively arranged a first terminal portion 120 and a second terminal portion 130. Inside the first terminal portion 120 and the second terminal portion 130 here, they are used to place wiring terminals to achieve wiring. Here, at least one hook 202 is on the second terminal portion 130. This hook 202 can also be called the second hook 202b, and the corresponding card slot 105 is the second card slot 105. Here, the second card slot 105 is specifically very close to the corner position of the circuit breaker housing 100.

[0045] For the positioning slot 103', it can either be independently opened on the circuit breaker housing 100 or utilize the riveting hole 103 on the circuit breaker housing 100. In this embodiment, the positioning slot 103' is a part of the riveting hole 103, specifically a part of the riveting hole 103 at the rotation center of the handle 104.

[0046] The shield 300 is used to cover the first terminal portion 120 and can shield the wire connecting the first terminal portion 120 to the inside of the leakage housing 200. Here, the shield 300 is snap-fitted and fixed to the first terminal portion 120 and the leakage housing 200, and can cover the wire passing hole 120a and the tool hole 120b of the first terminal portion 120. The shield 300 has an inner cavity, and the leakage housing 200 has a notch 240. The wire passing hole 120a communicates with the notch 240 through the inner cavity, that is, the wire can enter the inside of the leakage housing 200 through the inner cavity and the notch 240.

[0047] Here, the shield 300 has a mating portion 310 that fits the outer shape of the notch 240. The mating portion 310 can fill the notch 240 from the outside (without affecting the wire entering the notch 240), so that it can look more complete in appearance. Here, the mating portion 310 is snap-fitted and fixed to the part of the leakage housing 200 at the notch 240.

[0048] For the shield 300, it has a first snap projection 301. An accessory assembly groove 106 is provided on the side surface of the circuit breaker housing 100, and the first snap projection 301 is in snap-fit with the accessory assembly groove 106. Specifically, the accessory assembly groove 106 is provided on the side surface of the left housing 101, and the shield 300 has a first snap projection 301, thus forming a snap-fit. Here, since the accessory assembly groove 106 (for assembling many accessories) is already provided on the circuit breaker housing 100 itself, the snap-fit can be achieved by borrowing the original design of the circuit breaker itself, and there is no need to additionally design a snap groove for this purpose.

[0049] For the shield 300, it has a first positioning post 302. A first positioning hole 107 is provided on the first terminal portion 120, and the first positioning post 302 is in positioning fit with the first positioning hole 107. Specifically, the first positioning hole 107 is provided on the right housing 102, and the first positioning post 302 is in positioning fit with the first positioning hole 107. Such a design can facilitate assembly.

[0050] For the shield 300, it has a hook 303. A bayonet 203 is provided on the leakage housing 200, and the hook 303 forms a snap-fit with the bayonet 203. Specifically, a bayonet 203 is provided at the notch 240 of the leakage housing 200, and the hook 303 extends into the notch 240 to form a snap-fit with the bayonet 203, which can effectively improve the stability between the two.

[0051] For the shield 300, a clamping hole 304 is provided. The leakage housing 200 has a first barb 204. The first barb 204 on the shield 300 and the clamping hole 304 form a clamping fit. Specifically, the first barb 204 is located on the wall of the leakage housing 200 at the notch 240. The first barb 204 and the clamping hole 304 of the shield 300 form a clamping fixation, further improving the stability.

[0052] For the shield 300, a second barb 305 is provided. The second barb 305 penetrates into the tool hole 120b and hooks on the inner wall of the first terminal portion 120, further improving the stability.

[0053] For the shield 300, a shielding portion 306 is provided. The shielding portion 306 completely shields all the tool holes 120b. Shielding the tool holes 120b by the shielding portion 306 can prevent the user from misoperation.

[0054] Of course, in addition to the above 1P+N structure, the present application can also be applied to structures such as 2P+N, 3P+N, and 4P. It only needs to adaptively increase the number of breaker poles P, change the size of the leakage pole N, the size of the shield 300, and the number of wiring holes.

[0055] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A mounting structure for a leakage circuit breaker, comprising at least one circuit breaker pole and a leakage electrode; the circuit breaker pole comprises a circuit breaker housing, and the leakage electrode comprises a leakage housing; characterized in that: The leakage housing is provided with a positioning boss and at least two hooks, a triangular arrangement is formed between the positioning boss and any two hooks, and the triangle in the triangular arrangement is an acute triangle; a slot matching the hook and a positioning slot matching the positioning boss are provided on the circuit breaker housing, and the leakage housing is spliced ​​on one side of the circuit breaker housing through the hook and the positioning boss.

2. The installation structure of a leakage circuit breaker according to claim 1, characterized in that: The leakage shell comprises an upper cover and a lower seat fixed to each other, and each of the upper cover and the lower seat has at least one hook.

3. The installation structure of a leakage circuit breaker according to claim 2, characterized in that: A first clamping rail groove is arranged on the leakage housing, a second clamping rail groove is arranged on the circuit breaker housing, at least one clamping hook is arranged at the first clamping rail groove and the corresponding clamping groove is arranged at the second clamping rail groove.

4. The installation structure of a leakage circuit breaker according to claim 3, characterized in that: The hook arranged at the first rail groove is the first hook, and the slot corresponding to the first hook is the first slot; the first hook includes a connecting portion and a clamping portion, and the clamping portion is connected to the leakage housing through the connecting portion to form a clamping gap; the first hook is clamped into the inside of the circuit breaker housing through the first clamping slot, so that a part of the circuit breaker housing is in the clamping gap; the connecting portion has a fitting surface that fits with the circuit breaker housing, and the fitting surface is arranged at an acute angle to the bottom surface of the circuit breaker housing.

5. The installation structure of a leakage circuit breaker according to claim 1, characterized in that: At least two riveting holes are arranged on the circuit breaker housing, and the positioning groove is one of the riveting holes.

6. The installation structure of a leakage circuit breaker according to claim 1, characterized in that: A handle is rotatably arranged on the circuit breaker housing, and a positioning groove is located at the rotation center of the handle.

7. The installation structure of a leakage circuit breaker according to claim 1, characterized in that: The first terminal part and the second terminal part are respectively arranged on both sides of the circuit breaker housing in the length direction, and the card slot corresponding to at least one card hook is arranged on the second terminal part.

8. The installation structure of a leakage circuit breaker according to claim 7, characterized in that: It also includes a protective cover, which is fixed to the first terminal part and / or the leakage shell by snapping, covering the first terminal part; the protective cover has an inner cavity, the first terminal part has a threading hole, the leakage shell has a notch, and the threading hole communicates with the notch through the inner cavity.

9. The installation structure of a leakage circuit breaker according to claim 8, characterized in that: The protective cover has a fitting portion, which fits the shape of the notch, and the fitting portion is fixed to the part of the leakage shell located at the notch by clamping.

10. The installation structure of a leakage circuit breaker according to claim 8, characterized in that: The shield is provided with a first clamping protrusion, and the side surface of the circuit breaker housing is provided with an accessory assembly groove, and the first clamping protrusion is clamped and matched with the accessory assembly groove; And / or, the shield has a first positioning column, the first terminal portion has a first positioning hole, and the first positioning column is positioned and matched with the first positioning hole; And / or, the shield is provided with a hook, and the leakage housing is provided with a bayonet, and the hook and the bayonet form a snap fit; And / or, a first barb is provided on the leakage housing, a clamping hole is provided on the shield, and the first barb is engaged with the clamping hole; And / or, the first terminal portion has a tool hole, the shield has a second barb, and the second barb penetrates the tool hole and hooks on the inner wall of the first terminal portion; And / or, the first terminal portion has a tool hole, and the shield has a shielding portion that completely shields the tool hole.

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