Junction box assembling structure

Abstract

The utility model relates to the field of junction boxes, in particular to a junction box assembly structure, which comprises a box body and a box cover, the box cover is mounted at the upper end of the box body in a sliding clearance fit manner, an anti-reverse mounting block is arranged at the outer side end part of the box cover along the sliding direction, and a wingspan part is arranged at the right end of the bottom of the box body. Glue inlet points for box body injection molding are arranged on the wingspan parts, the box body and the box cover are installed in a sliding clearance fit mode, the box cover can slide at the upper end of the box body in the specific direction, the box cover can better adapt to deformation caused by heating of the box cover, the falling risk of the box cover is reduced, the glue inlet points are independently added to the tail of the box body, the fragile glue inlet points of the box body are moved to the outside of the box body, and the glue inlet points are not prone to falling off. The influence on the main structural strength of the box body can be reduced, box body cracking caused by weak glue inlet position is prevented, the overall performance is improved, and the service life of the box body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of junction boxes, and specifically to a junction box assembly structure. Background Technology

[0002] During the grid-connected operation of a power station, the junction box, as a critical component, bears the important responsibility of connecting and protecting circuits. However, existing junction boxes have many drawbacks. During operation, heat is generated inside the junction box due to current flow, and the accumulation of heat causes the middle part of the cover to expand, bulge, and bend. When this bending reaches a certain limit, the cover clips that secure it cease to function, and the cover detaches. In rainy or snowy weather, junction boxes without effective cover protection are highly susceptible to rainwater intrusion. Once rainwater enters the junction box, it can easily cause short circuits, and in severe cases, even fires, posing a significant threat to the safe and stable operation of the power station.

[0003] Furthermore, in most commercially available junction boxes, the injection port is typically located at the bottom or side of the box. From an injection molding perspective, the flow state of the molten plastic differs from other parts during injection molding at the injection port, resulting in a less compact molecular arrangement and structure, making it a weak point in the performance of the injection-molded part. Analysis of occasional box cracking observed in actual power station operations suggests that structural defects at the injection port are likely a significant contributing factor to these cracking issues.

[0004] Therefore, a junction box assembly structure that solves the above problems needs to be designed. Utility Model Content

[0005] This utility model provides a junction box assembly structure to solve the problems of the prior art.

[0006] The purpose of this utility model can be achieved through the following technical solution: A junction box assembly structure includes: a box body and a box cover, the box cover is slidably fitted to the upper end of the box body, the outer end of the box cover along the sliding direction is provided with an anti-reverse mounting block, the bottom right end of the box body is provided with a wing portion, and the wing portion is provided with a glue injection point for the box body injection molding.

[0007] In a further improvement, the upper end of the box body is provided with a sliding groove, and the two sides of the box cover are provided with sliders. The sliders are matched and set in the sliding groove, and the top surface of the box cover is flush with the top surface of the box body.

[0008] In a further improvement, the bottom of the slide groove extends outward to form a support surface, the shape of which is the same as that of the anti-reverse mounting block. The support surface is located below the top surface of the box, and the anti-reverse mounting block is disposed on the support surface.

[0009] In a further improvement, an inclined guide is provided on the outer side of the middle part of the support surface, and a locking block matching the inclined guide is provided on the outer side of the anti-reverse mounting block.

[0010] In a further improvement, a supporting rib is provided in a ring on the inner wall of the box, and the top surface of the supporting rib extends to the bottom surface of the sliding groove.

[0011] As a further improvement, the wingspan is provided with rounded corner surfaces on both sides.

[0012] Compared with the prior art, the advantages of the junction box assembly structure of this utility model are as follows:

[0013] The sliding gap between the box body and the lid allows the lid to slide along a specific direction on the upper part of the box body. Compared to traditional snap-on installation, this sliding installation provides a more integrated fixation, better accommodating deformation caused by heat and reducing the risk of the lid falling off. Furthermore, it eliminates the need for complex tools during end-user maintenance. An anti-reverse mounting block on the outer end of the lid ensures correct installation direction and prevents incorrect installation. A wing section with an injection point on the right side of the bottom of the box body further strengthens the structure by placing the injection point on the wing section and adding a separate injection point at the rear of the box body. This reduces the impact on the main structural strength of the box body, prevents cracking due to weak injection points, improves overall performance, and extends the box body's lifespan. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the box body in this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the box cover in this utility model.

[0017] In the figure, 1-box body, 11-slide groove, 12-support surface, 13-inclined guide, 14-support rib 1, 2-box cover, 21-slider, 22-blocking block, 23-anti-reverse mounting block, 31-wing span, 311-rounded corner surface, 32-glue injection point. Detailed Implementation

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0020] Example 1

[0021] A junction box assembly structure includes: a box body 1 and a box cover 2. The box cover 2 is slidably fitted onto the upper end of the box body 1. The outer end of the box cover 2 along the sliding direction is provided with an anti-reverse mounting block 21. The bottom right end of the box body 1 is provided with a wing portion 31. The wing portion 31 is provided with a glue injection point 32 for the box body injection molding.

[0022] like Figures 1-3 As shown, the working principle of this utility model is as follows:

[0023] The sliding clearance of the box body 1 and the box cover 2 allows the box cover 2 to slide in a specific direction on the upper part of the box body 1. An anti-reverse mounting block 21 is provided on the outer end of the box cover 2 to ensure the correct installation direction. A wing 31 is provided at the bottom right end of the box body 1, and a box body injection injection point 32 is provided on it.

[0024] Compared to traditional snap-on installation, the sliding installation method provides a unified fixation, better adapting to the deformation of the lid due to heat, reducing the risk of the lid falling off, and eliminating the need for complex tools during end-user maintenance. The anti-reverse mounting block ensures that the front and back of the lid are different sizes, preventing incorrect lid installation. By placing the glue inlet on the wing section and adding a separate glue inlet at the rear of the box, the weak point of glue injection is moved to the outside of the box, reducing the impact on the main structural strength of the box, preventing the box from cracking due to the weak glue inlet, improving overall performance, and extending the box's lifespan.

[0025] As a further preferred embodiment, the upper end of the box body 1 is provided with a sliding groove 11, and the two sides of the box cover 2 are provided with sliders 21. The sliders 21 are matched and set in the sliding groove 11. The cooperation between the sliding groove 11 and the sliders 21 makes the connection between the box cover 2 and the box body 1 more stable and the sliding process smooth. The top surface of the box cover 2 is flush with the top surface of the box body 1, which can reduce the risk of water accumulation caused by height difference and improve waterproof performance.

[0026] As a further preferred embodiment, the bottom of the slide groove 11 extends outward to form a support surface 12. The support surface 12 has the same shape as the anti-reverse mounting block 21. The support surface 12 is located below the top surface of the box body 1. The anti-reverse mounting block 21 is disposed on the support surface 12. The support surface 12 provides support for the anti-reverse mounting block 21, enhancing the stability of the anti-reverse mounting block 21 and further ensuring the accuracy and firmness of the box cover 2 installation.

[0027] As a further preferred embodiment, the support surface 12 has an inclined guide 13 on its outer side at the center, and the anti-reverse mounting block 21 has a locking block 22 on its outer side that matches the inclined guide 13. During installation, the inclined guide 13 and the locking block 22 cooperate with each other to provide guidance, making it easy for the anti-reverse mounting block 21 to be accurately installed on the support surface 12. After installation, the locking block 22 engages with the inclined guide 13, increasing the reliability of the connection.

[0028] As a further preferred embodiment, the inner wall of the box body 1 is provided with a support rib 14 in a ring shape. The top surface of the support rib 14 extends to the bottom surface of the slide groove 11. The support rib 14 enhances the structural strength of the box body 1, especially by reinforcing the slide groove 11, which can better withstand the pressure of the lid 2 and the stress caused by thermal expansion and contraction, and reduce the possibility of box body deformation.

[0029] As a further preferred embodiment, the wingspan 31 is provided with arc-shaped corner surfaces 311 on both sides. The arc-shaped corner surfaces 311 can effectively avoid stress concentration, make the plastic melt flow more uniformly during the injection molding process, improve the structural strength of the wingspan 31, and also reduce the risk of damage during transportation or use due to sharp edges and corners.

[0030] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A junction box assembly structure, characterized in that, include: The box body and the box lid are fitted with a sliding clearance on the upper end of the box body. The outer end of the box lid along the sliding direction is provided with an anti-reverse block. The bottom right end of the box body is provided with a wing section, and the wing section is provided with a glue injection point for the box body injection molding.

2. A junction box assembly according to claim 1, wherein The upper end of the box body is provided with a sliding groove, and the two sides of the box lid are provided with sliders. The sliders are matched and set in the sliding groove, and the top surface of the box lid is flush with the top surface of the box body.

3. A junction box assembly according to claim 2, wherein, The bottom of the slide groove extends outward to form a support surface. The support surface has the same shape as the anti-reverse mounting block. The support surface is located below the top surface of the box, and the anti-reverse mounting block is disposed on the support surface.

4. A junction box assembly according to claim 3, wherein An inclined guide is provided on the outer side of the middle part of the support surface, and a locking block matching the inclined guide is provided on the outer side of the anti-reverse mounting block.

5. The junction box assembly of claim 1, wherein: The inner wall of the box is provided with a supporting rib in a ring shape, and the top surface of the supporting rib extends to the bottom surface of the sliding groove.

6. The junction box assembly of claim 1, wherein: The wingspan has rounded corner surfaces on both sides.

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