A protective cover and circuit breaker adapter

Abstract

A protective cover and a circuit breaker adapter seat have a circuit breaker supporting surface, at least one group of circuit breaker incoming line through holes and at least one group of circuit breaker outgoing line through holes are arranged on the circuit breaker supporting surface, and insulating flanges are arranged on the back surface of the circuit breaker supporting surface, the edges of the circuit breaker incoming line through holes and / or the circuit breaker outgoing line through holes. The protective cover cooperates with the circuit breaker adapter seat to stably support and install multiple circuit breakers side by side. The outgoing line end and the incoming line end of each circuit breaker are electrically isolated by the insulating flanges to prevent arc creeping and short circuit between phases of the circuit breaker. Multiple groups of circuit breaker incoming line through holes and circuit breaker outgoing line through holes can realize parallel installation of multiple circuit breakers of different specifications, the protective cover provides electrical isolation and sealing for the circuit breakers, ensures that the live parts are not exposed, and prevents the internal live parts from being touched during installation, thereby increasing safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical connectors, specifically a protective cover and a circuit breaker adapter. Background Technology

[0002] Cable distribution boxes often house electrical switching devices such as circuit breakers, isolating switches, and residual current devices (RCDs). Traditionally, these devices are connected using rail mounting and cable jumpers. This method results in complex installation and wiring procedures, exposed cables leading to poor safety, and the need to reconnect cables for device replacement, making maintenance inconvenient. The applicant's utility model patent, "CN205282406U - A Circuit Breaker Adapter Base," proposes a modular installation method using a circuit breaker adapter base in conjunction with busbars within the distribution box to achieve multiple circuit breakers, improving safety and facilitating maintenance. During the modular installation of circuit breakers via the adapter base, the circuit breakers must be securely connected to the adapter base, and the adapter base must comprehensively consider heat dissipation and insulation to ensure the reliability and safety of the electrical connection. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a protective cover with a circuit breaker support surface. At least one set of circuit breaker inlet holes and at least one set of circuit breaker outlet holes are provided on the circuit breaker support surface. Insulating flanges are provided on the back side of the circuit breaker support surface, at the edges of the circuit breaker inlet holes and / or the circuit breaker outlet holes.

[0004] Furthermore, the insulating flange is an annular flange that surrounds the edge of the circuit breaker inlet via and / or the circuit breaker outlet via.

[0005] Furthermore, the circuit breaker outgoing through holes are provided in multiple sets arranged vertically, and at least one set of circuit breaker outgoing through holes is a waist hole.

[0006] Furthermore, one end of the circuit breaker support surface is provided with a terminal receiving protrusion, and a terminal receiving groove is provided at the end of the terminal receiving protrusion. A terminal receiving through hole is provided on the adjacent surface of the terminal receiving protrusion and the terminal receiving groove. Terminal fastening holes are provided on the upper surface of both the terminal receiving protrusion and the terminal receiving groove.

[0007] Furthermore, a raised retaining ring is provided on the back of the terminal fastening hole.

[0008] Furthermore, the back of the outlet terminal receiving groove has a terminal insulating grid.

[0009] Furthermore, the end of the outlet terminal receiving groove is connected to a terminal sealing flange that is spaced apart.

[0010] Furthermore, heat dissipation windows are provided on both sides of the terminal sealing flange, and heat dissipation grilles are provided on the upper surface of the circuit breaker support surface and the upper surface of the outgoing terminal receiving groove.

[0011] Furthermore, the circuit breaker inlet and outlet through holes are formed within the baffle groove, and a glue injection blind hole is formed between the circuit breaker inlet and outlet through holes.

[0012] A circuit breaker adapter base is also proposed, including the aforementioned protective cover. The circuit breaker adapter base has an inlet connection hole. The protective cover is placed on the circuit breaker adapter base. The circuit breaker is supported on the circuit breaker support surface. The inlet and outlet ends of the circuit breaker are fixed and electrically connected through conductive posts that pass through the inlet and outlet holes of the circuit breaker and the circuit breaker adapter base. The circuit breaker is supported by the conductive posts and a gap is left between the conductive posts and the circuit breaker support surface.

[0013] Compared with existing technologies, the technical solution of this application has the following beneficial effects: The protective cover proposed in this utility model, in conjunction with the circuit breaker adapter seat, can achieve stable side-by-side support and installation of multiple circuit breakers. The outgoing and incoming terminals of each circuit breaker are electrically isolated by insulating flanges to prevent arcing and short circuits between phases. Multiple sets of circuit breaker inlet and outlet vias allow for the parallel installation of multiple circuit breakers of different specifications. The protective cover provides electrical isolation and enclosure for the circuit breakers, ensuring that live parts are not exposed and that internal live components are not touched during installation, thus increasing safety and reliability. Attached Figure Description

[0014] Figure 1 : Schematic diagram of the front structure of the protective cover; Figure 2 : Front view of the protective cover structure; Figure 3 Schematic diagram of the structure on the back of the protective cover Figure 1 ; Figure 4 Schematic diagram of the structure on the back of the protective cover Figure 2 ; Figure 5 : Schematic diagram of circuit breaker, protective cover and circuit breaker adapter assembly; Figure 6 Side view of the circuit breaker, protective cover, and circuit breaker adapter assembly; Figure 7 : Sectional view of the protective cover from direction A. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 , Figures 3-5 As shown. The protective cover has a circuit breaker support surface 11, on which a set of circuit breaker inlet through-holes 121 and four sets of circuit breaker outlet through-holes 122 are provided. Two circuit breakers 100 can be installed side by side on the circuit breaker support surface 11. The protective cover is integrally molded from insulating material, and its relatively flat circuit breaker support surface 11 is used to support and fix the circuit breaker 100. The electrical connection of the circuit breaker is realized through copper busbars inside the circuit breaker adapter base. After the protective cover is closed on the circuit breaker adapter base, the entire circuit breaker adapter base forms a relatively closed space. The internal live parts such as copper busbars and terminals are not exposed, and the operators will not touch the aforementioned live parts when disassembling and assembling the circuit breaker, thus ensuring safety. One circuit breaker 100 corresponds to two sets of circuit breaker outgoing vias 122 and one set of circuit breaker incoming vias 121. The two sets of circuit breaker outgoing vias 122 can be used for the installation, fixing, and electrical connection of circuit breakers 100 of different specifications. In this embodiment, one set of circuit breaker incoming vias 121 is set on the circuit breaker adapter base. Obviously, both sets of circuit breaker incoming vias 121 can also be set on the circuit breaker support surface 11 of the protective cover. In this embodiment, the circuit breaker 100 is fixed on the circuit breaker support surface 11 by using conductive posts 22 that pass through the circuit breaker incoming vias 121 and the circuit breaker outgoing vias 122, and realizes the electrical connection between the incoming and outgoing ends of the circuit breaker 100 and the circuit breaker adapter base. The insulating flange 123 can effectively isolate the arc transmission path between the conductive posts 22 and the copper busbars between the incoming and outgoing ends of the circuit breaker, prevent phase-to-phase arcing short circuits, and increase electrical safety.

[0017] In a more preferred embodiment, the insulating flange 123 is an annular flange that surrounds the edges of the circuit breaker inlet via 121 and / or the circuit breaker outlet via 122. The annular flange can completely surround and isolate the conductive post 22 that penetrates the via, thus providing electrical isolation and insulation.

[0018] In a more preferred embodiment, two of the four sets of circuit breaker outgoing through holes 122 are waist holes. When the distance between the incoming and outgoing ends of the circuit breaker 100 is different, the assembly spacing of the conductive posts 22 can be adjusted through the waist holes to accommodate the installation of circuit breakers 100 of different specifications.

[0019] In a more preferred embodiment, such as Figure 2 and Figure 5 The circuit breaker support surface 11 has a terminal receiving groove 17 at one end, and a terminal receiving groove 18 is formed at the end of the terminal receiving groove 17. A terminal through hole 171 is formed on the adjacent surface of the terminal receiving groove 17 and the terminal receiving groove 18. Terminal fastening holes 181 are formed on the upper surface of the terminal receiving groove 17 and the upper surface of the terminal receiving groove 18. In this embodiment, the two circuit breakers 100 each correspond to a set of terminal outputs 21 and are arranged in a staggered manner. The set of terminal outputs 21 located on the upper layer will be received in the terminal receiving groove 18, and the other set of terminal outputs 21 located on the lower layer will be received in the end of the circuit breaker adapter seat. After the protective cover is closed on the adapter seat, the terminal output cable connected to the upper terminal output 21 will be received in the terminal receiving groove 18, and the terminal output cable of the lower terminal output 21 will be received and connected through the corresponding wire groove of the circuit breaker adapter seat. Therefore, the terminal output cables are firmly limited by their respective wire grooves. When connecting the outgoing cable and the outgoing terminal 21, a wrench is needed to tighten the cable through the terminal fastening hole 181.

[0020] In a more preferred embodiment, a raised retaining ring 182 is provided on the back of the terminal fastening hole 181. The retaining ring 182 can prevent fasteners such as bolts from falling off from one side when the cable is tightened, and can also provide electrical isolation between the terminal phases to prevent phase-to-phase arcing and short circuits.

[0021] In a more preferred embodiment, such as Figure 7 As shown. When the protective cover is placed on the circuit breaker adapter, a certain gap inevitably exists between the retaining ring 182 and the outgoing terminal 21. This gap may still lead to arcing and creepage short circuits between the terminals. The back of the outgoing terminal receiving groove 17 has a terminal insulating grille 172, the height of which is greater than the height of the retaining ring 182. This can isolate the aforementioned gap and eliminate the aforementioned risk of arcing and creepage short circuits between the terminals.

[0022] In a more preferred embodiment, a terminal sealing flange 13 is connected to the end of the outgoing cable receiving groove 18 at intervals. The end of the terminal sealing flange 13 is preferably arc-shaped, and when the protective cover is closed on the circuit breaker adapter, the arc-shaped terminal sealing flange 13 can limit the cable connected to the outgoing cable terminal 21.

[0023] In a more preferred embodiment, heat dissipation windows 141 are provided on both sides of the terminal sealing flange 13, and heat dissipation grilles 142 are provided on the upper surface of the circuit breaker support surface 11 and the upper surface of the outgoing terminal receiving groove 17. The heat dissipation windows 141 and heat dissipation grilles 142 on both sides of the terminal sealing flange 13 can be fitted with suitable mounting brackets to ventilate and dissipate heat from the internal transition copper busbar.

[0024] In a more preferred embodiment, the circuit breaker inlet through-hole 121 and the circuit breaker outlet through-hole 122 are formed within the baffle groove 125, and a blind hole for glue injection is formed between the circuit breaker inlet through-hole 121 and the circuit breaker outlet through-hole 122. Figure 1 The protective cover can accommodate circuit breakers of different specifications. When the unused circuit breaker inlet through-holes 121 and 122 are not needed, they can be sealed with a sealing plate. Specifically, adhesive can be applied to the blind hole 124, and the sealing plate can be attached to the baffle groove 125 to seal the unused circuit breaker inlet through-holes 121 and 122. After the sealing plate is embedded in the baffle groove 125, its surface should still be flush with the circuit breaker support surface 11.

[0025] Based on the above embodiments, a circuit breaker adapter base is also proposed. The circuit breaker adapter base has at least one set of circuit breaker inlet vias 121. A protective cover is fitted onto the circuit breaker adapter base, and the circuit breaker is supported on the circuit breaker support surface 11. During installation, the circuit breaker 100 is fixedly installed side-by-side via conductive posts 22, utilizing the circuit breaker adapter base, the circuit breaker inlet vias 121 and outlet vias 122 on the protective cover, and the circuit breaker inlet vias 121 and 122 on the protective cover. Electrical connection is achieved between the conductive posts 22 and the transition copper busbar and outlet terminals within the circuit breaker adapter base. The height of the conductive posts 22 is configured to support the circuit breaker 100 with a gap between it and the circuit breaker support surface 11 of the protective cover, increasing the heat dissipation effect at the bottom of the circuit breaker 100.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective cover, characterized in that, It has a circuit breaker support surface (11), on which at least one set of circuit breaker inlet through holes (121) and at least one set of circuit breaker outlet through holes (122) are provided, and insulating flanges (123) are provided on the back side of the circuit breaker support surface (11), the edges of the circuit breaker inlet through holes (121) and / or the circuit breaker outlet through holes (122).

2. The protective cover as described in claim 1, characterized in that, The insulating flange (123) is an annular flange that surrounds the edge of the circuit breaker inlet via (121) and / or the circuit breaker outlet via (122).

3. The protective cover as described in claim 2, characterized in that, The circuit breaker outgoing through hole (122) is provided in multiple sets and arranged vertically, and at least one set of circuit breaker outgoing through hole (122) is a waist hole.

4. The protective cover as described in claim 1, characterized in that, One end of the circuit breaker support surface (11) is provided with a terminal receiving protrusion (17), and a terminal receiving groove (18) is opened at the end of the terminal receiving protrusion (17). A terminal through hole (171) is opened on the adjacent surface of the terminal receiving protrusion (17) and the terminal receiving groove (18). Terminal fastening holes (181) are opened on the upper surface of the terminal receiving protrusion (17) and the upper surface of the terminal receiving groove (18).

5. The protective cover as described in claim 4, characterized in that, The terminal fastening hole (181) has a raised retaining ring (182) on the back.

6. The protective cover as described in claim 5, characterized in that, The back of the outlet terminal receiving groove (17) has a terminal insulating grid (172), the height of which is greater than the height of the retaining ring (182).

7. The protective cover as described in claim 6, characterized in that, The end of the outlet receiving groove (18) is connected to a terminal sealing flange (13) that is spaced apart.

8. The protective cover as described in claim 7, characterized in that, Heat dissipation windows (141) are provided on both sides of the terminal sealing flange (13), and heat dissipation grilles (142) are provided on the upper surface of the circuit breaker support surface (11) and the upper surface of the outgoing terminal receiving groove (17).

9. The protective cover as described in claim 1, characterized in that, The circuit breaker inlet through hole (121) and the circuit breaker outlet through hole (122) are opened in the baffle groove (125), and a glue injection blind hole is opened between the circuit breaker inlet through hole (121) and the circuit breaker outlet through hole (122).

10. A circuit breaker adapter base, characterized in that, Including the protective cover as described in any one of claims 1 to 9, at least one set of circuit breaker inlet through holes (121) are opened on the circuit breaker adapter base, the protective cover is closed on the circuit breaker adapter base, the circuit breaker is supported on the circuit breaker support surface (11), the inlet end and outlet end of the circuit breaker are fixed and electrically connected to the circuit breaker adapter base through the circuit breaker inlet through hole (121) and the circuit breaker outlet through hole (122) by conductive posts, the circuit breaker is supported by conductive posts and a gap is left between the circuit breaker and the circuit breaker support surface (11).

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