Compact high-protection copper bar junction box

Abstract

The utility model discloses a compact high-protection copper bar junction box, which comprises a junction box base and an insulating shell cover detachably connected with the junction box base in a matched mode, a pipe terminal is arranged in the junction box base, and a protective sleeve is arranged between the junction box base and the insulating shell cover. The protective sleeve comprises a protective sleeve main body, a first matching part and a second matching part, wherein the first matching part and the second matching part are arranged on two sides of the protective sleeve main body and are used for being matched with the junction box base, the second matching part is used for being matched with the insulating shell cover, and the protective sleeve main body is provided with a through groove for assembling a copper bar. According to the utility model, the additional protection sleeve is arranged, so that the creepage distance of the external copper bar can be increased, and the electrical protection performance is improved; the pipe terminals are adopted to replace copper bars, so that the utilization rate of the current-carrying area is high; meanwhile, a plurality of parts such as a locking nut and a positioning piece are omitted, so that the part cost can be reduced; in addition, the LED lamp also has reliable sealing and waterproof effects.

Description

Technical Field

[0001] The utility model belongs to the technical field of copper busbar junction boxes, in particular to a compact high-protection copper busbar junction box. Background Art

[0002] Junction boxes, also known as connectors, are commonly used components in electronic engineering. They act as a bridge between blocked circuits or isolated circuits, allowing current to flow smoothly. The forms and structures of connectors vary greatly, among which copper bus connectors are the most commonly used components in energy storage systems. They are used to carry copper busbars to meet the requirements of the limit channel matching at the free end of the copper busbar.

[0003] The traditional copper busbar junction box adopts a through-hole design for the copper busbar to pass through on the insulating protective cover, which leads to a large gap between the copper busbar and the through-hole, and even the inner cavity of the connector. This type of connection is not able to be sealed, and it is difficult to meet the requirements of reliable waterproofness and detachable maintenance by using simple sealing rings, sealing strips, sealing filling structures, etc.

[0004] The patent "CN202223533197.4 Copper busbar junction box with waterproof structure" can achieve built-in filling matching seal of the built-in chamber by designing a built-in sealing body, while satisfying the penetration seal of the conductive copper busbar, thereby ensuring the waterproof sealing reliability of the copper busbar junction box; however, there are still some shortcomings: the electrical protection performance is low, and the overall size of the junction box needs to be increased to increase the creepage distance, and the space occupied by the increased size will also increase, and the cost will also increase accordingly; the connector conductive component uses a copper busbar, and the current-carrying area of ​​the copper busbar is wasted a lot; in addition, locking nuts, positioning parts and other components are required to position the connector conductive component, there are many parts, low processing efficiency, and high cost.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to provide a compact high-protection copper busbar junction box, thereby overcoming the defects in the above-mentioned prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a compact high-protection copper busbar junction box, comprising a junction box base and an insulating shell cover detachably connected to the junction box base, wherein a pipe terminal is arranged in the junction box base, and a protective sleeve is arranged between the junction box base and the insulating shell cover, wherein the protective sleeve comprises a protective sleeve main body, a first connecting portion arranged on both sides of the protective sleeve main body for connecting with the junction box base, and a second connecting portion for connecting with the insulating shell cover, and the protective sleeve main body is provided with a through groove for assembling the copper busbar.

[0008] Further, as a preference, the junction box base is provided with an annular assembly groove, and the first matching portion is inserted into the annular assembly groove to seal with the junction box base.

[0009] Further, as a preference, an annular clamping portion is provided inside the insulating shell cover, and the annular clamping portion is clamped to the outer wall of the second matching portion and sealedly matched with the second matching portion.

[0010] Further, as a preference, outer walls of the first matching portion and the second matching portion are both provided with O-rings.

[0011] Furthermore, preferably, the tube terminal is provided with threads inside.

[0012] Further, as a preference, the outer peripheral wall of the junction box base is provided with a matching groove, and the inner wall of the insulating shell cover is correspondingly provided with a convex strip structure that matches with the matching groove.

[0013] Furthermore, preferably, the outer peripheral wall of the junction box base is also provided with a protruding structure, and the insulating shell cover is provided with a snap-in hole at a position corresponding to the protruding structure, and the protruding structure is snapped into the snap-in hole.

[0014] Furthermore, preferably, a sealing gasket is also provided on the junction box base.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides an additional protective sleeve between the junction box base and the insulating shell cover, and increases the creepage distance of the external copper busbar through the protective sleeve, thereby improving the electrical protection performance, without increasing the overall size of the junction box base and the insulating shell cover;

[0017] The utility model adopts tubular terminals to replace copper bars as the conductive structure of the connector, with high current carrying area utilization rate, and only needs to process the internal threads during processing, which will not produce excessive waste compared with copper bars, and can reduce material costs;

[0018] The utility model adopts the tubular terminal, so that multiple parts such as the locking nut and the positioning piece can be omitted, thereby reducing the cost of parts and improving the processing efficiency;

[0019] The junction box base, the insulating shell cover and the protective sleeve of the utility model respectively form a matching structure, and the junction box base and the insulating shell cover form a matching structure at the same time, which has a good sealing and waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a compact high-protection copper busbar junction box of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure decomposition of a compact high-protection copper busbar junction box of the utility model;

[0022] Figure 3 It is an enlarged schematic diagram of a protective sleeve of a compact high-protection copper busbar junction box of the utility model;

[0023] Figure 4 It is an enlarged schematic diagram of a junction box base and an insulating shell cover of a compact high-protection copper busbar junction box of the utility model;

[0024] Figure 5 It is a cross-sectional view of a compact high-protection copper busbar junction box of the utility model;

[0025] Figure markings: 1-junction box base, 11-annular assembly groove, 12-matching groove, 13-protruding structure, 2-insulating shell cover, 21-annular clamping part, 22-convex strip structure, 23-clamping hole, 3-tube terminal, 4-protective sleeve, 41-protective sleeve body, 42-first matching part, 43-second matching part, 44-through groove, 5-installation gap, 6-sealing gasket, 7-O-ring. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0027] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0028] Example:

[0029] like Figure 1-5As shown, a compact high-protection copper busbar junction box comprises a junction box base 1 and an insulating shell cover 2 detachably connected to the junction box base 1, wherein a pipe terminal 3 is arranged inside the junction box base 1, a protective sleeve 4 is arranged between the junction box base 1 and the insulating shell cover 2 and extends to the outside of the junction box base 1 and the insulating shell cover 2, the protective sleeve 4 comprises a protective sleeve body 41, a first connecting portion 42 arranged on both sides of the protective sleeve body 41 for connecting with the junction box base 1 and a second connecting portion 43 for connecting with the insulating shell cover 2, and the protective sleeve body 41 is provided with a through groove 44 for assembling the copper busbar.

[0030] In this embodiment, the inner wall of the tube terminal 3 is processed with threads for locking the external copper busbar in the through groove 44 or for external wiring. Therefore, a channel is reserved on the protective sleeve body 41 to allow the tube terminal 3 to connect with the internal and external copper busbars in the through groove 44.

[0031] The creepage distance of the external copper busbar of the existing copper busbar junction box is limited, and the electrical protection performance is low. If the creepage distance is to be increased, the size of the overall junction box needs to be increased. In this embodiment, a separate protective sleeve 4 is provided, and the protective interface (i.e., the creepage distance) between the internal pipe terminal 3 and the external copper busbar is composed of the first matching portion 42, the second matching portion 43 and the edge of the protective sleeve body 41. Therefore, the creepage distance and the creepage clearance can be effectively increased, thereby improving the electrical protection, but there is no need to increase the size of the junction box as a whole.

[0032] In this embodiment, when the junction box base 1 and the insulating shell cover 2 are matched, an installation gap 5 is left between the two, and the installation gap is used to fix the junction box base 1 and other panels during use.

[0033] In this embodiment, a sealing gasket 6 is further provided on the junction box base 1, and the sealing gasket 6 can play a good sealing role when the junction box base 1 is fixed to other panels.

[0034] In this embodiment, as a specific solution, the junction box base 1 is provided with an annular assembly groove 11, and the first matching portion 42 is an annular structure, which is inserted into the annular assembly groove 11 and sealed with the junction box base 1; more specifically, at least one O-ring 7 is provided on the outer wall of the first matching portion 42 to improve the sealing performance when the two are matched.

[0035] In this embodiment, as a specific solution, an annular clamping portion 21 is provided in the insulating shell cover 2, and the second matching portion 43 is also an annular structure. The annular clamping portion 21 is clamped to the outer wall of the second matching portion 43 and sealed with the second matching portion 43; more specifically, an O-ring 7 is also provided on the outer wall of the second matching portion 43 to improve the sealing performance when the two are matched.

[0036] In this embodiment, as a specific solution, the outer peripheral wall of the junction box base 1 is provided with a matching groove 12 , and the inner wall of the insulating shell cover 2 is correspondingly provided with a convex strip structure 22 matched with the matching groove 12 .

[0037] In this embodiment, as a more specific solution, the outer wall of the junction box base 1 is further provided with a protruding structure 13 , and the insulating shell cover 2 is provided with a snap-fitting hole 23 corresponding to the protruding structure 13 , and the protruding structure 13 is snapped into the snap-fitting hole 23 .

[0038] When the insulating shell cover 2 and the junction box base 1 are assembled, the convex strip structure 22 is inserted into the matching groove 12, and the protruding structure 13 is locked in the locking hole 23, so that the two can achieve quick plug-in and locking.

[0039] The utility model is provided with an additional protective sleeve 4, which increases the creepage distance of the external copper busbar through the protective sleeve 4, thereby improving the electrical protection performance, and there is no need to increase the overall size of the junction box base and the insulating shell cover; and the tubular terminal 3 is used to replace the copper busbar as the conductive structure of the connector, the current-carrying area utilization rate is high, and only the internal thread needs to be processed during processing, compared with the copper busbar, no excessive waste will be generated, and the material cost can be reduced; at the same time, multiple parts such as locking nuts and positioning parts are omitted, which can reduce the part cost and improve the processing efficiency; in addition, the junction box base, the insulating shell cover and the protective sleeve of the utility model respectively form a matching structure, and the junction box base and the insulating shell cover form a matching structure, which has a good sealing and waterproof effect.

[0040] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A compact high-protection copper busbar junction box, comprising a junction box base and an insulating shell cover detachably connected to the junction box base, characterized in that: A tubular terminal is provided in the junction box base, a protective sleeve is provided between the junction box base and the insulating shell cover, the protective sleeve comprises a protective sleeve body, a first matching portion arranged on both sides of the protective sleeve body for matching with the junction box base, and a second matching portion for matching with the insulating shell cover, and the protective sleeve body is provided with a through groove for assembling a copper busbar.

2. A compact high protection copper busbar junction box according to claim 1, characterized in that: The junction box base is provided with an annular assembly groove, and the first matching portion is inserted into the annular assembly groove and sealedly matched with the junction box base.

3. The compact high protection copper busbar junction box according to claim 1 is characterized in that: An annular clamping portion is provided inside the insulating shell cover, and the annular clamping portion is clamped to the outer wall of the second matching portion and is sealed and matched with the second matching portion.

4. The compact high protection copper busbar junction box according to claim 1 is characterized in that: The outer walls of the first matching portion and the second matching portion are both provided with O-type sealing rings.

5. The compact high protection copper busbar junction box according to claim 1 is characterized in that: The pipe terminal is provided with threads inside.

6. The compact high protection copper busbar junction box according to claim 1, characterized in that: The outer peripheral wall of the junction box base is provided with a matching groove, and the inner wall of the insulating shell cover is correspondingly provided with a convex strip structure matched with the matching groove.

7. A compact high protection copper busbar junction box according to claim 6, characterized in that: The outer peripheral wall of the junction box base is also provided with a protruding structure, and the insulating shell cover is provided with a snap-fitting hole at a position corresponding to the protruding structure, and the protruding structure is snapped into the snap-fitting hole.

8. A compact high protection copper busbar junction box according to any one of claims 1 to 7, characterized in that: A sealing pad is also provided on the junction box base.

Images