Circuit breaker convenient for wiring

Abstract

The utility model discloses a circuit breaker convenient for wiring, which comprises a base, a middle cover and a side cover plate, and is characterized in that the middle cover is fixed on the base; a first space is arranged in the middle cover, a wiring groove is formed in the side face of the base and the side face of the middle cover, and the groove in the back face of the base is communicated with the first space through the wiring groove. The side cover plate is detachably connected with the base or / and the middle cover and is used for sealing the wiring channel; wherein the middle cover is provided with a first wall located at the wiring channel, and the base is provided with a second wall located at the wiring channel; after the middle cover and the base are fixed, the first wall and the second wall are arranged in a staggered mode. According to the invention, the impact on the side cover plate is reduced.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and is a circuit breaker, specifically a circuit breaker that is convenient for wiring. Background Art

[0002] In recent years, the concept of smart grid has been proposed, and the requirements for circuit breakers are getting higher and higher. As a circuit protection component, circuit breakers often need to have some sampling structures inside to realize temperature detection or current detection or to power the control components inside the circuit breaker. At present, the wiring method of these sampling structures is mostly to open the back of the base, and then the sampling line passes through the opening to connect to the control circuit board inside the circuit breaker.

[0003] As a relatively novel wiring structure, a measuring circuit breaker with temperature measurement disclosed in CN217588816U adopts a method of opening a wiring groove on the side of the circuit breaker base and the middle cover, and then using a side cover to close the wiring groove. This wiring structure is relatively novel and is also a better wiring method.

[0004] However, in this wiring structure, the wiring groove is approximately located at the fitting position of the base and the middle cover. Since the fitting surface (or the fitting gap) is perpendicular to the side cover, during the disconnection process of the circuit breaker, the gas directly blows away the side cover.

[0005] Therefore, how to redesign a circuit breaker with a relatively stable structure that can realize side wiring is also a question worth considering. Summary of the invention

[0006] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a circuit breaker that is easy to route.

[0007] The present application provides: a circuit breaker that is convenient for wiring, comprising a base, a middle cover and a side cover, wherein the middle cover is fixed on the base; a first space is arranged inside the middle cover, and wiring grooves are jointly provided on the sides of the base and the middle cover, and the wiring grooves connect the grooves on the back of the base with the first space; the side cover is detachably connected to the base and / or the middle cover, and is used to close the wiring grooves; wherein the middle cover has a first wall located at the wiring groove, and the base has a second wall located at the wiring groove; after the middle cover is fixed to the base, the first wall and the second wall are staggered.

[0008] With this structure, in the prior art, the middle cover and the base at the wiring trough are attached to each other, so the gap between the two is directly aligned with the side cover, so the gas easily impacts the side cover, causing the side cover to fall off. In the present application, this part is made into a staggered structure, which can reduce the impact force on the side cover from two aspects. The first staggered structure has a stronger sealing performance, and the gas is not easy to be discharged from here; the second staggered structure, the gap between the two will not be aligned with the side cover, so even if there is sporadic gas leakage, it will not have a strong impact on the side cover.

[0009] In an embodiment of the present application, the second wall includes a second surface and a blocking rib extending beyond the second surface, and the blocking rib is located on one side of the second surface; the first wall includes a first surface, and after the middle cover is fixed to the base, the first surface and the second surface are attached to each other, and the blocking rib at least blocks part of the gap formed by the first surface and the second surface, so that the first wall and the second wall are staggered.

[0010] By adopting this structure, the blocking ribs on the second surface can be staggered to improve the sealing performance and reduce the direct impact on the side cover plate.

[0011] In an embodiment of the present application, the first wall includes a first surface and a blocking rib extending beyond the first surface, and the blocking rib is located on one side of the first surface; the first wall includes a second surface, and after the middle cover is fixed to the base, the first surface and the second surface are attached to each other, and the blocking rib at least blocks part of the gap formed by the first surface and the second surface, so that the first wall and the second wall are staggered.

[0012] By adopting this structure, the blocking ribs on the first surface can be staggered to improve the sealing performance and reduce the direct impact on the side cover plate.

[0013] In an embodiment of the present application, a second aisle is provided on the middle cover, and a first aisle is provided on the base, and the first aisle and the second aisle together form the wiring groove; the width of the second aisle is smaller than the width of the first aisle, and the intersecting portion of the first wall and the second wall is located in the second aisle.

[0014] With this structure, compared with the structure in the prior art in which the first aisle and the second aisle are of equal width, the second aisle wall is narrower than the first aisle, and the staggered portion can be arranged in the second aisle, which can have better sealing performance.

[0015] In an embodiment of the present application, a guide rail is provided on the side cover plate, a slide groove is provided on the wiring groove, and the guide rail is arranged in the slide groove, so that the disassembly and assembly of the side cover plate is achieved by sliding.

[0016] With this structure, the side cover can be disassembled and assembled by sliding, which is convenient for disassembly and assembly.

[0017] In an embodiment of the present application, it also includes a bottom plate, which is fixed to the base and is used to close the groove on the back of the base; the wiring groove has a disassembly opening, and the disassembly opening is located on the back of the base; a part of the bottom plate is against the side cover plate to prevent the side cover plate from falling off from the disassembly opening.

[0018] With this structure, the disassembly opening is arranged on the back of the base, and at the same time, the side cover is restricted by fixing the bottom plate to the base, which can effectively ensure the installation stability of the side cover.

[0019] In an embodiment of the present application, the side cover plate has a stopper extending into the groove, and the stopper is used to abut against the bottom plate.

[0020] With this structure, the side cover plate is extended to form a stopper, which makes it easier to achieve abutment between the side cover plate and the bottom plate.

[0021] In an embodiment of the present application, a damping protrusion is provided on the guide rail, and an interference fit is formed between the damping protrusion and the slide groove to increase the damping force between the side cover plate and the slide groove.

[0022] With this structure and the design of the damping point, the installation of the side cover will be more stable and will not fall off easily.

[0023] In an embodiment of the present application, there are two wiring troughs, which are respectively arranged on two side surfaces of the base and the middle cover, and the number of side cover plates is the same as the number of wiring troughs.

[0024] With this structure, more wiring trough designs will be more conducive to wiring.

[0025] In an embodiment of the present application, the middle cover includes a partition wall and a side wall surrounding the partition wall, the side wall forms a first space around the partition wall; the partition wall has a sunken portion, the sunken portion is connected to the wiring groove, and at least one circuit board or components on a circuit board are arranged in the sunken portion.

[0026] With this structure, the design of the sinking portion can accommodate circuit boards with some larger components or accommodate larger components.

[0027] In an embodiment of the present application, a evacuation groove is provided on the wall of the sinking portion, and the evacuation groove is used to evade the moving contact.

[0028] With this structure, the avoidance groove design on the sunken part makes the entire product more compact. The sunken part can accommodate the circuit board, and the avoidance groove can prevent the moving contact from hitting the sunken part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 An exploded view of a circuit breaker according to Embodiment 1 of the present application is shown;

[0031] Figure 2 The wiring trough and a partial enlarged view of the circuit breaker in Example 1 of the present application are shown;

[0032] Figure 3 The base and a partial enlarged view of the circuit breaker of Example 1 of the present application are shown;

[0033] Figure 4 An axial view of a middle cover of a circuit breaker in Embodiment 1 of the present application is shown;

[0034] Figure 5 A schematic diagram of the back side of the base of the circuit breaker in Embodiment 1 of the present application is shown;

[0035] Figure 6 A cross-sectional view and a partial enlarged view of the staggered position of the base and the middle cover of the circuit breaker of Example 1 of the present application are shown;

[0036] Figure 7 A schematic diagram and a partial enlarged diagram of a side plate cover of a circuit breaker in Example 1 of the present application are shown;

[0037] Figure 8 An axial view of the middle cover of the circuit breaker in Embodiment 1 of the present application from another perspective is shown;

[0038] Fig. 9 A cross-sectional view of the circuit breaker of Embodiment 1 of the present application after the middle cover and the base are matched is shown. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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

[0044] like Figure 1-Figure 9 As shown, an embodiment of the present application provides a circuit breaker having a wiring structure, so it is very convenient for wiring.

[0045] The circuit breaker includes the following structure:

[0046] The circuit breaker includes a base 10 and a middle cover 20 .

[0047] The middle cover 20 includes a partition wall 21 and a side wall 22 surrounding the partition wall 21, and the side wall 22 surrounds the partition wall 21 to form a first space 23. The first space 23 can be used to set a control component, which can also be said to be a circuit board component.

[0048] The base 10 and the back side 11 are provided with a groove 12, and the groove 12 is designed to facilitate the end of the sampling line to contact with the conductive circuit of the circuit breaker or the fastening screw of the conductive circuit. Of course, the sampling method of the end of the sampling line here is already common knowledge in the field and will not be elaborated here. After sampling, the sampling line can be extended into the middle cover 20 through the wiring groove 120 and electrically connected to the circuit board assembly. The sampling here can be the sampling of temperature signals, the sampling of current, voltage and other signals, the sampling of the circuit board's self-generated power supply, or a combination of these types of sampling.

[0049] The middle cover 20 and the base 10 are fastened by bolts. Of course, they can also be fastened by riveting, clamping, etc.

[0050] Here, the partition wall 21 also has a sinking portion 210, and a circuit board is accommodated inside the sinking portion 210, and a varistor 211 is arranged on the circuit board. The design of such a sinking portion 210 can accommodate some components with relatively large specifications, and of course is not limited to the varistor 211 in this embodiment. In order not to affect the moving contact 214, a avoidance groove 213 is arranged on the sinking portion 210, and the design of the avoidance groove 213 here is mainly to avoid the extreme disconnection of the moving contact 214. That is to say, under normal circumstances, the moving contact 214 will not enter the avoidance groove 213 after the moving contact 214 assembly moves in order to facilitate the normal disconnection of the circuit breaker for wiring. Only when the moving contact 214 is disconnected to the maximum angle, it will enter the avoidance groove 213.

[0051] A wiring groove 120 is formed on the side of the middle cover 20 and the base 10. Here, there are two wiring grooves 120. One is located on the left side of the middle cover 20 and the base 10, and the other is located on the right side of the middle cover 20 and the base 10. Here, the wiring groove 120 located on the left side is connected to the sinking part 210.

[0052] Regardless of which wiring trough 120, its structure is basically the same, and there is also a side cover plate 30 covering the wiring trough 120. Therefore, the wiring trough 120 and the side plate cover on the left side are introduced in detail below, and the wiring trough 120 on the right side can refer to the wiring trough 120 on the left side.

[0053] Here, the wall of the middle cover 20 located in the wiring groove 120 and adjacent to the base 10 is the first wall 120a, and the wall of the base 10 located in the wiring groove 120 and adjacent to the middle cover 20 is the second wall 120b. Here, the first wall 120a and the second wall 120b are staggered, that is, this arrangement is different from the way in which the two are attached in the prior art. There are many ways of staggering here. As a relatively preferred way, the second wall 120b includes a second surface 120b1 and a blocking rib 120b2 that exceeds the second surface 120b1, and the blocking rib 120b2 is located on one side of the second surface 120b1, and the first wall 120a includes the first surface 120a1. Thus, after the middle cover 20 is fixed to the base 10, the second surface 120a1 and the first surface 120b1 will be in contact with each other, and the blocking ribs 120b2 will block at least a portion of the gap formed by the first surface 120a1 and the second surface 120b1, thus forming a staggered arrangement.

[0054] Of course, this staggered arrangement can also be reversed, for example, the blocking rib 120b2 is set on the second wall 120a. In addition to the reverse, the blocking rib 120b2 can also be set on both the second wall 120a and the second wall 120b. No matter which method is used, as long as the staggered arrangement can be formed, the effect of increasing air tightness and reducing the impact on the side cover can be achieved.

[0055] In this embodiment, the second passage 1201 is formed on the middle cover 20, and the first passage 1202 is formed on the base 10. The first passage 1202 and the second passage 1201 together form the wiring groove 120. Here, the width of the second passage 1201 is smaller than the width of the first passage 1202. After installation, the blocking rib 120b2 blocks the gap formed by at least a portion of the first surface 120a1 and the second surface 120b1 to form a dislocation structure, and this dislocation structure also extends into the second passage 1201.

[0056] Slide grooves 1023 are provided on both sides of the first passage 1202, and corresponding guide rails 31 are provided on the side cover 30. By inserting the guide rails 31 into the slide grooves 1023, the side cover 30 can be slidably arranged, which makes it very convenient to disassemble and assemble the side cover 30. Of course, the disassembly opening of the side cover 30 is provided on the back of the base 10, that is, the wiring trough 120 has an opening on the back of the base 10, and the side cover 30 can be disassembled and assembled from this opening (disassembly opening).

[0057] Here, each guide rail 31 is provided with a damping protrusion 32, and the damping protrusion 32 here can achieve an interference fit with the slide groove 1023, but this interference fit only increases the damping force between the side cover plate 30 and the slide groove 1023, and does not cause the guide rail 31 and the slide groove 1023 to be unable to move, so it only increases the damping to prevent the side cover plate 30 from falling off freely.

[0058] At the same time, in order to increase the stability of the side cover 30, a bottom plate 40 is further arranged in the groove 12 on the back of the base 10, and the bottom plate 40 is fixed to the base 10, and this fixing can be fixed by gluing, screws, or clamping. Since there is an interlaced part between the bottom plate 40 and the side cover 30, the bottom plate 40 will abut against the side cover 30 after being fixed, so as to prevent the side cover 30 from falling off easily.

[0059] Here, the interlacing between the bottom plate 40 and the side cover plate 30 is accomplished by the stopper 33 on the side cover plate 30. Here, the stopper 33 extends into the groove 12. Therefore, after the bottom plate 40 is fixed, it will abut against the stopper 33 to prevent the side cover plate 30 from falling off easily.

[0060] Of course, this kind of resisting cooperation can also be achieved by partially extending the bottom plate 40 to the bottom of the side cover plate 30.

[0061] 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.

[0062] 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 circuit breaker for convenient wiring, comprising a base, a middle cover and a side cover, wherein the middle cover is fixed on the base; a first space is provided in the middle cover, and a wiring groove is provided on the sides of the base and the middle cover, and the wiring groove connects the groove on the back of the base with the first space; the side cover is detachably connected to the base and / or the middle cover, and is used to close the wiring groove; the characteristics are: The middle cover has a first wall located at the wiring groove, and the base has a second wall located at the wiring groove; after the middle cover and the base are fixed, the first wall and the second wall are staggered.

2. A circuit breaker that facilitates wiring according to claim 1, characterized in that: The second wall includes a second surface and a blocking rib extending beyond the second surface, the blocking rib being located on one side of the second surface; the first wall includes a first surface, after the middle cover is fixed to the base, the first surface and the second surface are attached to each other, the blocking rib at least partially blocks a gap formed by the first surface and the second surface, so that the first wall and the second wall are staggered; Or, the first wall includes a first surface and a blocking rib extending beyond the first surface, and the blocking rib is located on one side of the first surface; the first wall includes a second surface, and after the middle cover is fixed to the base, the first surface and the second surface are attached to each other, and the blocking rib at least blocks part of the gap formed by the first surface and the second surface, so that the first wall and the second wall are staggered.

3. A circuit breaker that facilitates wiring according to claim 1, characterized in that: The middle cover is provided with a second passage, the base is provided with a first passage, and the first passage and the second passage together form the wiring groove; the width of the second passage is smaller than the width of the first passage, and the intersecting part of the first wall and the second wall is located in the second passage.

4. A circuit breaker for easy wiring according to claim 1, characterized in that: The side cover is provided with a guide rail, the wiring groove is provided with a slide groove, and the guide rail is arranged in the slide groove, so that the disassembly and assembly of the side cover is realized by sliding.

5. A circuit breaker for easy wiring according to claim 4, characterized in that: It also includes a bottom plate, which is fixed to the base and is used to close the groove on the back of the base; the wiring groove is provided with a disassembly opening, which is located on the back of the base; a part of the bottom plate is against the side cover plate to prevent the side cover plate from falling off from the disassembly opening.

6. A circuit breaker for easy wiring according to claim 5, characterized in that: The side cover plate has a stopper extending into the groove, and the stopper is used to abut against the bottom plate.

7. A circuit breaker for easy wiring according to claim 4, characterized in that: The guide rail is provided with a damping protrusion, and the damping protrusion is in interference fit with the slide groove to increase the damping force between the side cover plate and the slide groove.

8. The circuit breaker for easy wiring according to claim 1, characterized in that: There are two wiring troughs, which are respectively arranged on two side surfaces of the base and the middle cover, and the number of the side cover plates is the same as the number of the wiring troughs.

9. The circuit breaker for easy wiring according to claim 1, characterized in that: The middle cover includes a partition wall and a side wall surrounding the partition wall, wherein the side wall surrounds the partition wall to form a first space; the partition wall is provided with a sinking portion, which is connected to the wiring groove, and at least one circuit board or components on a circuit board are arranged in the sinking portion.

10. A circuit breaker for easy wiring according to claim 9, characterized in that: The wall of the sinking part is provided with an avoidance groove, and the avoidance groove is used for avoiding the moving contact.

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