Plug-in type distribution box busbar

Abstract

The utility model discloses a plug-in type distribution box busbar, and belongs to the field of building electrical technology. The busbar comprises a busbar body and a universal connecting plug. The busbar body comprises an insulating shell and four built-in full-length copper busbars, and the insulating shell is provided with a plugging window. The universal connecting plug is detachably fixed on the miniature circuit breaker and is provided with an elastic contact piece. The universal connecting plug is inserted into any plugging window of the busbar body, so that conductive connection between the elastic contact piece and the corresponding copper busbar is realized. According to the utility model, through the modular design, the problems of disordered cables, tedious construction, low space utilization rate and poor generality of the existing busbar in the traditional distribution box are solved, the purpose of flexibly adapting various miniature circuit breakers such as 1P, 1P + N, 2P, 3P, 4P and the like on the same busbar is realized, and the construction efficiency, the connection reliability and the layout flexibility are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building electrical, specifically relates to a plug -in distribution box busbar. BACKGROUND

[0002] In the existing building electrical construction, the switch components in the distribution box, such as various miniature circuit breakers, mainly rely on the cable laid on site for electrical connection. This traditional connection method has several significant defects. First, the in-box cable is crisscrossed, and the laying is extremely messy, which not only affects the appearance of the distribution box, but also brings great difficulty to the later maintenance, repair and fault troubleshooting. Secondly, the construction process is relatively complicated, depends on the technical level of the operator, needs to carry out a series of steps such as stripping, pressure connection, fixation, etc., which is low in efficiency and high in labor cost.

[0003] In addition, in order to simplify the wiring, some busbar products appear on the market. For example, the Chinese utility model patent with the authorization announcement number CN217280642U discloses "a new type of primary cable wiring busbar", which inserts the busbar body at the top of the miniature circuit breaker, and uses the connection terminal on the busbar body to pressure connect with the pin bolt of the miniature circuit breaker, thereby reducing the number of part of the lead. However, this scheme still has obvious limitations: the connection terminal of the busbar body is a fixed structure, and the position and spacing of the plug-in part are determined at the time of manufacturing, which cannot be flexibly adjusted according to the type, number or layout of the circuit breaker actually used on site. In actual application, it is necessary to "remove the excess plug-in part" according to the number of miniature circuit breakers, which is essentially a customized or destructive adjustment, and does not fundamentally solve the problem of universality. Once the construction is completed or different pole number circuit breakers need to be replaced, the busbar cannot be applied, the flexibility is poor, and its structure determines that it is difficult to mix 1P, 1P+N, 2P and other different pole number circuit breakers on the same busbar.

[0004] Therefore, there is an urgent need in the field for a distribution box connection scheme that can overcome the above-mentioned shortcomings, which should be able to significantly simplify the in-box wiring, save valuable installation space, improve connection reliability and construction efficiency, and have high universality and flexibility, and can dynamically adapt to various types, pole numbers and installation positions of miniature circuit breakers without cutting. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a plug-in distribution box busbar to solve the problems of messy cable connection in traditional distribution box, complicated construction and poor universality of existing busbar. Through modular structure design, the in-box wiring is realized to be neat and simple, the connection reliability, construction efficiency and space utilization rate are improved, and various types of miniature circuit breakers can be flexibly adapted.

[0006] To solve the above-mentioned technical problems, the technical solution proposed in this application is as follows:

[0007] This utility model provides a plug-in type distribution box busbar, including: a busbar body and a universal plug for connecting a miniature circuit breaker;

[0008] The bus body includes an insulating shell and at least four full-length copper busbars arranged side by side inside the insulating shell;

[0009] The insulating housing has a plug-in window for exposing part of the copper busbar;

[0010] The universal connector is detachably and fixedly connected to the input terminal side of the miniature circuit breaker, and the universal connector is provided with an elastic contact corresponding to the copper busbar;

[0011] The universal connector is inserted into the plug-in window of the insulating housing through its elastic contact element, and achieves elastic contact and electrical conductivity with the corresponding copper busbar;

[0012] The insertion position of the universal connector and the bus body can be adjusted within the length range of the bus body.

[0013] Furthermore, the four copper busbars inside the busbar body are used to connect the three-phase power supply and the power supply neutral line, respectively.

[0014] Furthermore, the insertion window on the insulating housing is a long strip-shaped window that is continuously opened along its length, or multiple independent windows that are spaced apart along its length.

[0015] Furthermore, the universal connector is available in various models to accommodate 1P, 1P+N, 2P, 3P, or 4P miniature circuit breakers.

[0016] Furthermore, the universal connector includes a body made of insulating material, the body having a snap-fit ​​structure for snapping and securing to the input terminal of a miniature circuit breaker.

[0017] Furthermore, the resilient contact is embedded inside the body of the universal connector, and the resilient contact has a resilient contact arm extending out of the body.

[0018] Furthermore, the busbar body is fixedly installed inside the distribution box, and its length direction is parallel to the mounting rail of the miniature circuit breaker.

[0019] Furthermore, multiple miniature circuit breakers equipped with different types of universal connectors can be simultaneously plugged into the same busbar body.

[0020] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0021] This utility model significantly simplifies the internal wiring of the distribution box through a modular plug-in structure, achieving a neat and compact layout and effectively saving installation space. Its plug-in connection method greatly improves construction efficiency and the reliability of electrical connections. Furthermore, thanks to its universal design, it can flexibly adapt to various types and pole numbers of miniature circuit breakers, enhancing configuration flexibility and reducing spare parts inventory costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A side cross-sectional view of a plug-in distribution box busbar provided for an embodiment of this utility model.

[0024] Figure 2 A front view of a plug-in distribution box busbar provided for an embodiment of this utility model.

[0025] Figure 3 This is a schematic diagram of a universal plug structure for a plug-in distribution box busbar, provided as an embodiment of the present utility model.

[0026] Figure 4 A schematic diagram of the structure of a universal connector fixed to the wiring terminal of a miniature circuit breaker according to an embodiment of this utility model.

[0027] Figure 5 The image shows a front view of a universal connector for a plug-in distribution box busbar after a miniature circuit breaker has been inserted into it, as provided in an embodiment of this utility model.

[0028] Figure 6 A side view of a universal connector for a plug-in distribution box busbar provided in an embodiment of this utility model after being plugged into a miniature circuit breaker.

[0029] Figure 7 This is a schematic diagram showing the installation of a plug-in distribution box busbar inside the distribution box, as provided in an embodiment of this utility model. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] like Figure 1 and 2 As shown in the figure, the plug-in distribution box bus provided by this utility model mainly includes: bus body 100 and universal plug connector 200.

[0032] The bus body 100 includes a long, strip-shaped insulating shell 110 made of an insulating material (such as engineering plastic). The interior of the insulating shell 110 forms four parallel, longitudinally penetrating receiving cavities. Within these four receiving cavities, four continuous copper busbars 120 are fixedly embedded. According to standard power distribution specifications, these four copper busbars can respectively correspond to phases L1, L2, and L3 of the three-phase power supply and the neutral line N (see [reference]). Figure 3 The insulating housing 110 plays a crucial role in providing support, fixation, and electrical insulation.

[0033] On the front of the insulating housing 110 (i.e., the side facing the installation of the miniature circuit breaker 300), continuous or multiple spaced-apart plug-in windows 111 are provided along its entire length. These plug-in windows 111 regularly expose specific portions of each internal copper busbar 120, providing a channel for the insertion and electrical contact of the universal connector 200.

[0034] The universal connector 200 is a modular component independent of the bus body 100. For example... Figure 3 As shown, taking a general-purpose connector 200 for a 2P miniature circuit breaker as an example, it is typically also composed of a body made of insulating material. Figure 3 In this diagram, L1, L2, and L3 represent the three phase lines in a three-phase four-wire system, and N is the neutral line in the three-phase four-wire system. The main body is equipped with an installation structure (such as a slot or clip) that matches the shape and spacing of the input terminals of the target miniature circuit breaker 300, allowing the universal connector 200 to be securely and detachably snapped onto or fixed to the power input terminals of the miniature circuit breaker 300.

[0035] Inside the body of the universal connector 200, there are resilient contacts 210 corresponding to the number of phases to be connected. For a 2P connector, there are two resilient contacts 210. These resilient contacts 210 are usually made of materials such as phosphor bronze with good elasticity and conductivity, and their ends are formed with resilient contact arms facing the bus body 100.

[0036] The assembly and working process of this utility model is as follows:

[0037] First, based on the power distribution plan, the construction personnel select the required type (e.g., 1P, 1P+N, 2P, etc.) of miniature circuit breaker 300 and its matching universal connector 200. The universal connector 200 is then accurately installed onto the input terminal side of the miniature circuit breaker 300, such as... Figure 4 As shown.

[0038] Then, the miniature circuit breaker 300 is installed on the standard mounting rail 400 inside the distribution box according to the design layout.

[0039] Next, the busbar body 100 is fixedly installed in a suitable position inside the distribution box, usually above or below a row of miniature circuit breakers 300, with its length direction parallel to the guide rail 400.

[0040] Finally, push the miniature circuit breaker 300, which has the universal connector 200 installed, so that the universal connector 200 is aligned with any suitable insertion window 111 on the busbar body 100, and forcefully insert it. During insertion, the contact arm of the elastic contact 210 on the universal connector 200 passes through the insertion window 111 and, due to its own elastic deformation, is tightly pressed against the surface of the corresponding copper busbar 120, forming a low-resistance, high-stability electrical connection. Since the insertion windows 111 are continuous or multiple in the length direction, the miniature circuit breaker 300 and its universal connector 200 can arbitrarily select the insertion position within the length range of the busbar body 100, making the layout extremely flexible.

[0041] like Figure 5 and Figure 6 As shown, in practical applications, multiple miniature circuit breakers 300 (e.g., 1P circuit breaker 301, 1P+N circuit breaker 302, 2P circuit breaker 303, etc.) equipped with different types of universal connectors 200 can be simultaneously plugged into a single busbar body 100, achieving a high degree of integration and universality. The final usage status within the distribution box is referenced. Figure 7 , where PE is the grounding conductor.

[0042] In summary, this utility model, through its innovative modular design, combines a fixed busbar with a flexibly configurable universal connector, successfully solving all the problems raised in the background art and providing a space-saving, convenient, reliable, and highly versatile distribution box busbar solution.

[0043] 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 process, method, article, or apparatus.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plug-in type distribution box busbar, characterized in that, include: Busbar body (100) and universal connector (200) for connecting miniature circuit breakers (300); The bus body (100) includes an insulating housing (110) and at least four continuous copper busbars (120) arranged side by side inside the insulating housing (110). The insulating housing (110) has a plug-in window (111) for exposing part of the copper busbar. The universal connector (200) is detachably fixed to the input terminal side of the miniature circuit breaker (300), and the universal connector (200) is provided with an elastic contact (210) corresponding to the copper busbar. The universal connector (200) is inserted into the plug-in window (111) of the insulating housing (110) through its elastic contact (210) to achieve elastic contact and conduction with the corresponding copper busbar; The insertion position of the universal connector (200) and the bus body (100) can be adjusted within the length range of the bus body (100).

2. The plug-in distribution box busbar according to claim 1, characterized in that, The four copper busbars (120) inside the busbar body (100) are used to connect the three-phase power supply and the power supply neutral line, respectively.

3. A plug-in distribution box busbar according to claim 1, characterized in that, The insertion window (111) on the insulating housing (110) is a long strip window that is continuously opened along its length direction, or multiple independent windows that are spaced apart along its length direction.

4. A plug-in distribution box busbar according to claim 1, characterized in that, The universal connector (200) is available in various models to be compatible with 1P, 1P+N, 2P, 3P or 4P miniature circuit breakers (300).

5. A plug-in distribution box busbar according to claim 4, characterized in that, The universal connector (200) includes a body made of insulating material, the body having a snap-fit ​​structure for snapping and securing to the input terminal of a miniature circuit breaker (300).

6. A plug-in distribution box busbar according to claim 5, characterized in that, The resilient contact (210) is embedded inside the body of the universal connector (200), and the resilient contact (210) has a resilient contact arm extending out of the body.

7. A plug-in distribution box busbar according to claim 1, characterized in that, The busbar body (100) is fixedly installed inside the distribution box, and its length direction is parallel to the mounting rail (400) of the miniature circuit breaker (300).

8. A plug-in distribution box busbar according to any one of claims 1-7, characterized in that, Multiple miniature circuit breakers (300) equipped with different types of universal connectors (200) can be simultaneously plugged into the same busbar body (100).

Images