Sealing structure of a base assembly and 90-degree junction box for double cables

Abstract

The utility model discloses a kind of sealing structure and the 90 degree junction box of double cable of base assembly, comprising: base assembly, upper cover assembly and second screw, the second plane is formed on base assembly upper end face, and threaded hole is formed on it symmetrically;The utility model is matched with the T type limiting boss of sealing ring by the gap of outer circumferential surface lower part, and the limitation of sealing ring circumferential rotation and axial displacement is cleverly realized.Specially, limiting boss is designed as six and is reasonably distributed along square sealing ring, ensure that sealing ring is evenly stressed, will not be loose in any direction, to solve the problem that sealing ring is offset and leads to sealing failure due to vibration or assembly error, realize accurate, stable multistage limiting of sealing ring, effectively prevent offset and twist, ensure sealing reliability.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, specifically, to a sealing structure for a base assembly and a 90-degree junction box for dual cables. Background Technology

[0002] In fields such as electronic equipment, precision instruments, and outdoor devices, the sealing performance between the base assembly and the top cover assembly directly affects the product's waterproof, dustproof, and long-term reliability. Traditional sealing structures typically employ a simple sealing ring press-fit method, using screws to fasten the top cover to the base, relying on the elastic deformation of the sealing ring to achieve a seal. However, this structure has the following technical problems:

[0003] (1) Under assembly or vibration conditions, the sealing ring is prone to displacement or torsion, leading to local sealing failure. The lack of an effective limiting mechanism makes it difficult to ensure that it is always in the preset position.

[0004] (2) As an auxiliary sealing component, the baffle is usually fixed to the top cover by snap-fit ​​or plug-in. However, the traditional structure lacks precise constraints on the fit between the baffle and the sealing ring. The baffle is prone to loosening or tilting and cannot effectively cover the lower side of the sealing ring, thereby reducing the uniformity of the seal.

[0005] (3) Due to the lack of integrated positioning design between the sealing ring, baffle, top cover and base, the position of each component needs to be adjusted multiple times during assembly, which is not only inefficient, but may also lead to a decrease in sealing performance due to operational errors.

[0006] Therefore, there is an urgent need for a new type of sealing structure that can solve problems such as sealing ring positioning, baffle stability and assembly convenience by optimizing the fit between the top cover, sealing ring and baffle, thereby improving the overall sealing reliability of the base assembly. Utility Model Content

[0007] To address the aforementioned technical problems, the present invention aims to provide a sealing structure for a base assembly and a 90-degree junction box for dual cables, thereby resolving issues such as easy displacement of the sealing ring, unstable installation of the baffle, loose fit of the stepped protrusions, and complex assembly processes in the prior art. This achieves precise positioning of the sealing ring, reliable fixing of the baffle, simplifies the assembly process, and improves the stability and durability of the sealing structure.

[0008] The present invention solves the above problems through the following technical solution:

[0009] A sealing structure for a base assembly includes: a base assembly, a top cover assembly, and a second screw. The upper end face of the base assembly forms a second plane, on which symmetrically arranged threaded holes are formed.

[0010] The top cover assembly includes a top cover, a sealing ring, and a baffle. The top cover has a first plane, a first through hole, a stepped protrusion, an outer peripheral surface, a notch, and a first buckle. The first plane of the top cover is located at the uppermost end of the top cover and has a first through hole. A second screw passes through the first through hole and engages with a threaded hole on the base assembly to cover the top cover assembly above the base assembly. A peripheral surface is formed perpendicular to the first plane below the first plane, and a stepped protrusion is formed on the outer side of the connection between the peripheral surface and the first plane. The outer side of the stepped protrusion abuts against the inner peripheral surface of the base assembly, and the outer peripheral surface abuts against the inner side of the sealing ring. The lower part of the outer peripheral surface has several notches that engage with the limiting bosses of the sealing ring, and a first buckle that engages with the second slot on the side of the baffle to insert the upper end of the baffle into the outer peripheral surface of the top cover and to fit the limiting bosses of the sealing ring with the upper end of the baffle. The edge of the baffle covers the lower side of the sealing ring to achieve a seal.

[0011] As a further improvement, the sealing ring extends inward to form a plurality of limiting bosses, and the limiting bosses are T-shaped.

[0012] As a further improvement, the limiting boss is set to six, with two on each side of the square sealing ring along its length and one on each side along its width.

[0013] As a further improvement, the first buckle is positioned between the two notches and on the front and rear sides of the outer peripheral surface.

[0014] As a further improvement, the lower edge of the baffle is formed with a retaining edge to cover the underside of the sealing ring.

[0015] Furthermore, this utility model also solves the above problems through the following technical solutions:

[0016] A 90-degree junction box with dual cables includes a sealed structure for a base assembly as described above.

[0017] As a further improvement, the junction box also includes: a first screw and a cable assembly; a rectangular receiving cavity is formed inside the base assembly, and a circular through hole for installing the cable assembly is vertically connected to the rectangular receiving cavity. One end of the cable assembly is inserted into the second through hole and locked in the rectangular receiving cavity of the base assembly by the first screw, so as to realize the connection with the lower cable to change the direction of the cable.

[0018] As a further improvement, the cable assembly is configured in pairs.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] (1) This utility model provides the main radial constraint by having the outer peripheral surface of the top cover directly abut against the inner side of the sealing ring; by having a notch set at the lower part of the outer peripheral surface cooperate with the T-shaped limiting boss of the sealing ring, the circumferential rotation and axial displacement of the sealing ring are cleverly restricted. In particular, the design of six limiting bosses and their reasonable distribution along the square sealing ring ensures that the sealing ring is subjected to uniform force and will not loosen in any direction, thereby solving the problem of sealing failure caused by the displacement of the sealing ring due to vibration or assembly error, realizing precise and stable multi-level limiting of the sealing ring, effectively preventing displacement and torsion, and ensuring sealing reliability.

[0021] (2) This utility model enables the quick and secure installation of the baffle and forms a synergistic sealing structure with the sealing ring; optimizes the matching relationship between the upper cover and the base assembly, and improves the effect of the primary sealing barrier; significantly simplifies the assembly process and improves production efficiency and consistency. Attached Figure Description

[0022] Figure 1 This is an exploded view of a 90-degree junction box with dual cables according to this utility model.

[0023] Figure 2 This is a schematic diagram of the upper cover structure of the upper cover assembly of this utility model;

[0024] Figure 3 This is an exploded view of the upper cover assembly of this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of a 90-degree junction box with dual cables according to the present invention.

[0026] Figure 5 This is a schematic diagram of the appearance of a 90-degree junction box with dual cables according to this utility model.

[0027] Reference numerals: 1. Base assembly; 101. Inner circumferential surface; 102. Second plane; 103. Threaded hole; 104. Second through hole; 105. Rectangular receiving cavity; 2. First screw; 3. Top cover assembly; 4. Second screw; 5. Top cover; 501. First plane; 502. First through hole; 503. Stepped protrusion; 504. Outer circumferential surface; 505. Notch; 506. First buckle; 6. Sealing ring; 601. Limiting boss; 7. Baffle; 701. Edge; 702. Second slot; 8. Cable assembly. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] See attached document Figure 1-5 A sealing structure for a base assembly includes: a base assembly 1, a top cover assembly 3, and a second screw 4. The upper end face of the base assembly 1 forms a second plane 102, on which symmetrically arranged threaded holes 103 are formed.

[0031] 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 first plane 501, a first through hole 502, a stepped protrusion 503, an outer peripheral surface 504, a notch 505, and a first buckle 506. The first plane 501 of the upper cover 5 is located at the uppermost end of the upper cover 5, and the first through hole 502 is formed thereon. The second screw 4 passes through the first through hole 502 and connects to the base assembly 1 to cover the upper cover assembly 3 on top of the base assembly 1. A peripheral surface 504 is formed perpendicular to the first plane 501 below it, and a stepped protrusion 503 is formed on the outer side of the connection between the peripheral surface 504 and the first plane 501. The outer side of the stepped protrusion 503 abuts against the inner peripheral surface 101 in the base assembly 1, and the peripheral surface 504 abuts against the inner side of the sealing ring 6. A plurality of notches 505 are formed at the lower part of the peripheral surface 504 to cooperate with the limiting protrusion 601 of the sealing ring 6, and a first buckle 506 to cooperate with the second slot 702 on the side of the baffle 7, so as to insert the upper end of the baffle 7 into the peripheral surface 504 of the upper cover 5, and to fit the limiting protrusion 601 of the sealing ring 6 with the upper end of the baffle 7. The edge of the baffle 7 is provided to cover the lower side of the sealing ring to achieve sealing.

[0032] In this embodiment, the sealing ring 6 extends inward to form a plurality of limiting protrusions 601, and the limiting protrusions 601 are T-shaped. Preferably, there are six limiting protrusions 601, two on each side along the length of the square sealing ring 6 and one on each side along the width of the square sealing ring 6. The first buckle 506 is disposed on the inner side of the outer peripheral surface 504, and is disposed between two notches 505, located on the front and rear sides of the outer peripheral surface 504. The outer side of the baffle 7 is provided with a second groove 702 that cooperates with the first buckle 506 to connect the baffle 7 to the upper cover 5.

[0033] Optionally, the baffle 7 has a retaining edge 701 around its edge, which covers the lower side of the sealing ring to achieve a seal.

[0034] Example 2:

[0035] See attached document Figure 1-5 A 90-degree junction box with dual cables includes a base assembly 1, a first screw 2, a top cover assembly 3, a second screw 4, and a cable assembly 8, etc.

[0036] The base assembly 1 has a rectangular receiving cavity 105 inside. The rectangular receiving cavity 105 has a vertically connected circular through second through hole 104 for installing cable assembly 8. One end of cable assembly 8 is inserted into the second through hole 104 and locked in the rectangular receiving cavity 105 of the base assembly 1 by the first screw 2 to achieve connection with the lower cable and change the direction of the cable.

[0037] Preferably, in this embodiment, there are two cable assemblies 8, which are arranged horizontally.

[0038] The upper end face of the base assembly 1 is also provided with a cover assembly 3 to close the upper part of the rectangular receiving cavity 105; after the cable assembly 8 is tightened with the first screw 2, the cover assembly 3 can be installed to form an internally sealed cavity with the base assembly 1. The upper end face of the base assembly 1 serves as a second plane 102, and the second plane 102 has two threaded holes 103 arranged opposite to each other.

[0039] 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 first plane 501, a first through hole 502, a stepped protrusion 503, an outer peripheral surface 504, a notch 505, and a first buckle 506. The first plane 501 of the upper cover 5 is located at the uppermost end of the upper cover 5, and the first through hole 502 is formed thereon. The second screw 4 passes through the first through hole 502 and connects to the base assembly 1 to cover the upper cover assembly 3 on top of the base assembly 1. A peripheral surface 504 is formed perpendicular to the first plane 501 below it, and a stepped protrusion 503 is formed on the outer side of the connection between the peripheral surface 504 and the first plane 501. The outer side of the stepped protrusion 503 abuts against the inner peripheral surface 101 in the base assembly 1, and the peripheral surface 504 abuts against the inner side of the sealing ring 6. A plurality of notches 505 are formed at the lower part of the peripheral surface 504 to cooperate with the limiting protrusion 601 of the sealing ring 6, and a first buckle 506 to cooperate with the second slot 702 on the side of the baffle 7, so as to insert the upper end of the baffle 7 into the peripheral surface 504 of the upper cover 5, and to fit the limiting protrusion 601 of the sealing ring 6 with the upper end of the baffle 7.

[0040] This invention provides primary radial constraint by directly abutting the outer circumferential surface of the top cover against the inner side of the sealing ring. A notch at the lower part of the outer circumferential surface, in conjunction with the T-shaped limiting boss of the sealing ring, cleverly restricts the circumferential rotation and axial displacement of the sealing ring. In particular, the design of six limiting bosses rationally distributed along the square sealing ring ensures uniform force distribution and prevents loosening in any direction. This solves the problem of sealing failure caused by vibration or assembly errors leading to ring misalignment, achieving precise and stable multi-level limiting of the sealing ring, effectively preventing misalignment and torsion, and ensuring sealing reliability.

[0041] Radial sealing is achieved through a sealing ring, which eliminates the need for the top cover to provide clamping force. The top cover screws are designed to be two opposite screws, which improves the efficiency of connector installation compared to the four or more screws used in comparable products.

[0042] The second screw for locking the top cover of this utility model is distributed at two points symmetrical about the vertical center line on the horizontal center line of the top cover, and also at two rounded corners on the inner circumferential surface of the base assembly. The arrangement of this second screw makes full use of the space, so that the boundary of the second screw mounting foot is within the size of the junction box, and the arrangement of the second screw will not increase the external size, thus allowing the conventional two-core through connector fixing end mounting size to be shared.

[0043] 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 sealing structure for a base assembly, characterized in that, include: The base assembly, the top cover assembly, and the second screw are provided. The upper surface of the base assembly forms a second plane on which symmetrically arranged threaded holes are formed. The top cover assembly includes a top cover, a sealing ring, and a baffle. The top cover has a first plane, a first through hole, a stepped protrusion, an outer peripheral surface, a notch, and a first buckle. The first plane of the top cover is located at the uppermost end of the top cover and has a first through hole. A second screw passes through the first through hole and engages with a threaded hole on the base assembly to cover the top cover assembly above the base assembly. A peripheral surface is formed perpendicular to the first plane below the first plane, and a stepped protrusion is formed on the outer side of the connection between the peripheral surface and the first plane. The outer side of the stepped protrusion abuts against the inner peripheral surface of the base assembly, and the outer peripheral surface abuts against the inner side of the sealing ring. The lower part of the outer peripheral surface has several notches that engage with the limiting bosses of the sealing ring, and a first buckle that engages with the second slot on the side of the baffle to insert the upper end of the baffle into the outer peripheral surface of the top cover and to fit the limiting bosses of the sealing ring with the upper end of the baffle. The edge of the baffle covers the lower side of the sealing ring to achieve a seal.

2. The sealing structure of the base assembly according to claim 1, characterized in that, The sealing ring extends inward to form several limiting bosses, and the limiting bosses are T-shaped.

3. The sealing structure of the base assembly according to claim 1, characterized in that, The limiting boss is set to six, with two on each side along the length of the square sealing ring and one on each side along the width of the square sealing ring.

4. The sealing structure of the base assembly according to claim 3, characterized in that, The first buckle is located between the two notches and on the front and back sides of the outer peripheral surface.

5. The sealing structure of the base assembly according to claim 1, characterized in that, The lower edge of the baffle is formed with a retaining edge to cover the lower side of the sealing ring.

6. A 90-degree junction box with dual cables, characterized in that, Includes a sealing structure for a base assembly as described in any one of claims 1-5.

7. A 90-degree junction box with dual cables according to claim 6, characterized in that, The junction box also includes: a first screw and a cable assembly; The base assembly has a rectangular receiving cavity inside, and a circular through hole for installing a cable assembly is vertically connected to the rectangular receiving cavity. One end of the cable assembly is inserted into the second through hole and locked in the rectangular receiving cavity of the base assembly by a first screw, so as to connect with the lower cable and change the direction of the cable.

8. A 90-degree junction box with dual cables according to claim 7, characterized in that, The cable assembly is configured in two parts.

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