A 90 degree junction box

Abstract

The utility model discloses a 90 degree junction box through the base subassembly and upper cover subassembly of second screw connection, the upper cover subassembly is constituted by upper cover, sealing washer and baffle, the upper cover is equipped with the recessed groove of the step away from the recess of base subassembly, the outer peripheral surface end face of recessed groove near upper cover center forms the gap, and the inboard of outer peripheral surface is provided with first buckle, the outer side of baffle is provided with the second clamping groove of cooperation with first buckle to connect baffle with upper cover, and sealing washer stretches out to form the limit boss to the inboard, and sealing washer is clamped in recessed groove, and limit boss is embedded with baffle top after penetrating gap to fix sealing washer, the utility model discloses the upper cover subassembly of junction box and base subassembly adopt radial seal, and sealing washer produces compression deformation in the direction perpendicular to the axis, and sealing washer is embedded with the installation mode of baffle top through limit boss, can not need screw to provide the compression force to sealing washer to reduce the number of screw.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, specifically, a 90-degree junction box. Background Technology

[0002] Currently, junction box covers are mostly sealed using end-face sealing, meaning both the cover and base have flat sealing surfaces. In space-constrained situations, the groove for the sealing ring is formed by splicing an internal plastic insulating component and the base shell. Gaps appear at the splicing points, and the shrinkage of the plastic component during molding causes deformation of the groove walls, leading to inconsistent circumferential filling of the sealing ring. Furthermore, since the sealing ring is pressed against the sealing surface by screws, these screws need to provide uniform clamping force around the ring. Typically, four or six screws are arranged along a diagonal or symmetrical line. An excessive number of screws results in low installation efficiency during use. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a 90-degree junction box that uses radial sealing for the sealing ring, thereby eliminating the need for screws to provide clamping force to the sealing ring and reducing the number of screws.

[0004] The present invention solves the above problems through the following technical solution:

[0005] A 90-degree junction box includes: a base assembly and a top cover assembly connected by a second screw; the top cover assembly consists of a top cover, a sealing ring, and a baffle; wherein, the top cover has a stepped groove recessed inward away from the base assembly; a notch is formed on the outer peripheral surface end face of the stepped groove near the center of the top cover, and a first buckle is provided on the inner side of the outer peripheral surface; a second slot is provided on the outer side of the baffle to connect the baffle to the top cover; the sealing ring extends inward to form a limiting boss, the sealing ring is engaged in the stepped groove, and the limiting boss penetrates the notch and fits into the top of the baffle to fix the sealing ring; the base assembly has a receiving cavity with an open upper end, and a second plane with a threaded hole is formed on the outer side of the base assembly; the top cover has a first plane with a first through hole, and when the first plane and the second plane are attached, the top cover assembly is locked onto the base assembly by the second screw passing through the first through hole and the threaded hole.

[0006] As a further improvement, the limiting boss is T-shaped.

[0007] As a further improvement, the notches are set to four, evenly distributed circumferentially.

[0008] As a further improvement, the first buckle is located on the left and right sides of the two notches provided at the front and back.

[0009] As a further improvement, the baffle is provided with a retaining edge around its edge, and the retaining edge covers the lower side of the sealing ring.

[0010] As a further improvement, the second plane is set to be no less than two, and all second planes have at least two opposite arrangements.

[0011] As a further improvement, the side of the receiving cavity is provided with a second through hole for placing a cable assembly. One end of the cable assembly passes through the second through hole and is locked in the receiving cavity by a first screw.

[0012] As a further improvement, the second plane is recessed towards the end furthest from the top cover assembly.

[0013] As a further improvement, the upper end of the base assembly is inserted into the stepped groove and abuts against the outer side of the sealing ring.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] (1) The junction box of this utility model adopts a radial seal between the top cover assembly and the base assembly. The sealing ring undergoes compression deformation in the direction perpendicular to the axis, that is, perpendicular to the axis of the screw. This design eliminates the need for the screw to provide clamping force to the sealing ring, thus reducing the number of screws.

[0016] (2) This utility model adopts a dual guarantee of sealing ring compression and limiting boss engagement. The sealing ring is firmly stuck in the stepped groove, ensuring the basic sealing surface. Its unique limiting boss passes through the notch and engages with the top of the cover plate, which is equivalent to adding an "anchor point" to the key part of the sealing ring, preventing the sealing ring from shifting or falling off, effectively preventing the sealing ring from moving circumferentially or radially after installation or during use, thereby ensuring the long-term stability of the sealing effect.

[0017] (3) The screws of this utility model are distributed at two diagonal corners of the top cover, and also at two rounded corners of the inner circumferential surface of the base assembly. The arrangement of these screws makes full use of the space, so that the boundary of the screw mounting feet is within the width direction of the junction box, and the width will not increase due to the arrangement of the screws. Attached Figure Description

[0018] Figure 1 This is an exploded view of a 90-degree junction box according to the present invention.

[0019] Figure 2 This is a schematic diagram showing the installation of the top cover, sealing ring, and baffle of this utility model;

[0020] Figure 3 This is an exploded view of the top cover, sealing ring, and baffle of this utility model;

[0021] Figure 4 This is a cross-sectional schematic diagram of a 90-degree junction box according to the present invention;

[0022] Figure 5 This is a partially enlarged cross-sectional view of the junction box of this utility model;

[0023] Figure 6 This is a top view of the junction box of this utility model.

[0024] Reference numerals: 1. Base assembly; 101. Inner circumferential surface; 102. Second plane; 103. Threaded hole; 104. Second through hole; 105. Receiving cavity; 2. First screw; 3. Top cover assembly; 4. Second screw; 5. Top cover; 501. First plane; 502. First through hole; 503. Stepped groove; 504. Outer circumferential surface; 505. Notch; 506. First snap-fit; 6. Sealing ring; 601. Limiting boss; 7. Baffle; 701. Edge retainer; 702. Second slot; 8. Cable assembly. Detailed Implementation

[0025] 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.

[0026] Example 1:

[0027] See attached document Figure 2-5 A 90-degree junction box includes: a base assembly 1 and a top cover assembly 3 connected by a second screw 4;

[0028] The upper cover assembly 3 consists of an upper cover 5, a sealing ring 6, and a baffle 7. The upper cover 5 has a stepped groove 503 that is recessed inward away from the base assembly 1. The outer peripheral surface 504 of the stepped groove 503 near the center of the upper cover 5 has a notch 505, and a first buckle 506 is provided on the inner side of the outer peripheral surface 504. The outer side of the baffle 7 has a second groove 702 that cooperates with the first buckle 506 to connect the baffle 7 to the upper cover 5. The sealing ring 6 extends inward to form a limiting boss 601. The sealing ring 6 is engaged in the stepped groove 503. The limiting boss 601 passes through the notch 505 and fits into the upper part of the baffle 7 to fix the sealing ring 6.

[0029] The baffle 7 has a retaining edge 701 around its edge, which covers the lower side of the sealing ring.

[0030] Example 2:

[0031] See attached document Figure 1-6 A 90-degree junction box includes a base assembly 1, a first screw 2, an upper cover assembly 3, and a second screw 4, etc.

[0032] The base assembly 1 is mainly composed of a rectangular receiving cavity 105. The receiving cavity 105 also has a circular through-hole 104 for placing a cable assembly 8. The cable assembly 8 is placed in the second through-hole 104 and locked into the receiving cavity 105 of the base assembly 1 by a first screw 2. The upper end face of the base assembly 1 also has a top cover assembly 3 to close the upper part of the receiving cavity 105; after the cable assembly 8 is tightened with the first screw 2, the top cover assembly 3 and the base assembly 1 form an internally sealed cavity. The upper end of the base assembly 1 has at least two opposing second planes 102, and each second plane 102 has a threaded hole 103. Preferably, the second planes 102 are recessed towards the end away from the top cover assembly 3.

[0033] The upper cover assembly 3 consists of an upper cover 5, a sealing ring 6, and a baffle 7. The outer side of the upper cover 5 is provided with a first plane 501. Two first planes 501 distributed diagonally are at the same height. Of course, the number of first planes can also be set to other numbers. The first plane 501 is provided with a first through hole 502. After the first plane 501 is attached to the second plane 102, the second screw 4 passes through the first through hole 502 and forms a connection with the threaded hole 103, which can lock the upper cover assembly 3 onto the base assembly 1.

[0034] Preferably, the upper cover 5 is provided with a stepped groove 503 that is recessed inward away from the base assembly 1. The sealing ring 6 is placed on the stepped groove 503 and fits against the outer peripheral surface 504 inside the stepped groove 503. A notch 505 is also provided on the end face of the outer peripheral surface 504, and a first buckle 506 is also provided on the inner side of the outer peripheral surface 504. In this embodiment, four notches 505 are provided, which are evenly distributed circumferentially, and the first buckle is provided on the left and right sides of the two notches provided in front and behind. The sealing ring 6 extends inward to form a T-shaped limiting boss 601 that cooperates with the notch 505. The limiting boss 601 is placed in the notch 505 and fastened to the baffle 7, which can enhance the fixation of the sealing ring 6 on the stepped groove 503.

[0035] The baffle 7 has a retaining edge 701 around its edge. The second slot 702 on the outer side of the baffle 7 cooperates with the first buckle 506 to limit the sealing ring 6 on the stepped groove 503 to form the upper cover assembly 3. The upper end of the base assembly 1 is inserted into the stepped groove 503 and abuts against the outer side of the sealing ring 6. The sealing ring 6 is compressed between the outer peripheral surface 504 of the upper cover 5 and the inner peripheral surface 101 of the base assembly 1. The deformed sealing ring 6 will continuously generate a reaction force on the sealing surface to ensure a tight fit with the outer peripheral surface 504 and the inner peripheral surface 101 to achieve a sealing effect.

[0036] This invention achieves radial sealing through a sealing ring. Radial sealing does not require the upper cover to provide clamping force. The upper cover screws are designed to be at least two arranged diagonally, which improves the efficiency of connector installation compared to the four or more screws designed in comparable products.

[0037] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A 90-degree junction box, characterized in that, include: The base assembly and the top cover assembly are connected by a second screw; The upper cover assembly consists of an upper cover, a sealing ring, and a baffle. The upper cover has a stepped groove that is recessed inward away from the base assembly. The outer peripheral surface of the stepped groove near the center of the upper cover has a notch, and a first buckle is provided on the inner side of the outer peripheral surface. The outer side of the baffle has a second groove that cooperates with the first buckle to connect the baffle to the upper cover. The sealing ring extends inward to form a limiting boss. The sealing ring is engaged in the stepped groove, and the limiting boss penetrates the notch and fits into the top of the baffle to fix the sealing ring. The base assembly has a receiving cavity with an open top, and the base assembly has a second plane with a threaded hole on its outside; the top cover has a first plane with a first through hole on its outside. When the first plane and the second plane are in contact, a second screw passes through the first through hole and the threaded hole to form a connection, thereby locking the top cover assembly onto the base assembly.

2. The 90-degree junction box according to claim 1, characterized in that, The limiting boss is T-shaped.

3. A 90-degree junction box according to claim 1, characterized in that, The notches are set to four, evenly distributed circumferentially.

4. A 90-degree junction box according to claim 3, characterized in that, The first buckle is located on the left and right sides of the two notches set at the front and back.

5. A 90-degree junction box according to claim 1, characterized in that, The baffle has a retaining edge around its edge, and the retaining edge covers the lower side of the sealing ring.

6. A 90-degree junction box according to any one of claims 1-5, characterized in that, The second plane is set to be no less than two, and all second planes have at least two opposite settings.

7. A 90-degree junction box according to any one of claims 1-5, characterized in that, The side of the receiving cavity is provided with a second through hole for placing a cable assembly. One end of the cable assembly passes through the second through hole and is locked in the receiving cavity by a first screw.

8. A 90-degree junction box according to any one of claims 1-5, characterized in that, The second plane is recessed towards the end furthest from the upper cover assembly.

9. A 90-degree junction box according to any one of claims 1-5, characterized in that, The upper end of the base assembly is inserted into the stepped groove and abuts against the outer side of the sealing ring.

Images