Glue-free waterproof junction box

Abstract

The utility model relates to the technical field of junction boxes, in particular to a glue-free waterproof junction box, which is characterized in that a plurality of positioning holes are formed in one surface, far away from a bottom plate, of a shell; a rubber core main body is arranged in each positioning hole; an outer convex ring is arranged on the outer side wall of the rubber core main body; a check ring is arranged in the positioning hole; an annular sealing ring is arranged on the surface, close to the bottom plate, of the check ring. And after the bottom plate is pressed on the rubber core main body, the annular sealing ring is pressed on the check ring by the outer convex ring. When the sealing structure is used, the sealing effect between the rubber core main body and the positioning hole is ensured, the disassembly and assembly efficiency of the sealing structure can be improved, and the sealing ring can be repeatedly used during maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, and particularly relates to a waterproof junction box that does not require glue application. Background Art

[0002] A junction box is a box structure used for transitional connection. The circuits at both ends can be transferred through the circuit structure on the junction box. Since the junction box is an electrical circuit device, the structure of the junction box needs to meet certain waterproof requirements.

[0003] In the existing junction box structure, the wiring glue core (with circuits integrated on the glue core) and the box body of the wire box are generally of a split structure. After the glue core is assembled and fixed to the wire box, glue is required to seal the gap between the glue core and the wire box.

[0004] In this sealing structure using glue, the amount of glue injection needs to be precisely controlled, otherwise it is easy to overflow and contaminate the surface of the product. Moreover, when using glue for sealing, a certain time is required for shaping and drying after glue injection. Therefore, during the drying period, there is a vacancy period, which makes the production of the junction box discontinuous and reduces the production efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a waterproof junction box that does not require glue application in view of the defects and deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A waterproof junction box that does not require glue application according to the utility model includes a shell and a bottom plate detachably connected to the shell; a plurality of positioning holes are provided on a surface of the shell away from the bottom plate; a glue core body is arranged in each of the positioning holes; an outer convex ring is arranged on an outer side wall of the glue core body; a retaining ring is arranged inside the positioning hole; an annular sealing ring is arranged on a surface of the retaining ring close to the bottom plate; after the bottom plate presses the glue core body, the outer convex ring presses the annular sealing ring on the retaining ring.

[0008] Further, a top plate is arranged inside the shell; the top plate covers the glue core body; the bottom plate presses the top plate on the glue core body.

[0009] Further, a top column is arranged at a position of the bottom plate facing the glue core body; the top column presses the top plate on the glue core body.

[0010] Further, a bottom plate reinforcing rib is arranged on a surface of the top plate.

[0011] Further, a threaded hole is arranged inside the positioning hole.

[0012] Furthermore, a countersunk through-hole communicating with the inner cavity of the housing is provided on the outer surface of the housing; a light guide column is arranged in the countersunk through-hole; the light guide column matches the countersunk through-hole; a positioning convex ring, a concave ring and a head are sequentially arranged on the column body of the light guide column along the length direction; the head is embedded into the countersunk hole of the countersunk through-hole; the positioning convex ring is embedded and fixed in the through-hole of the countersunk through-hole; a sealing ring is sleeved on the concave ring; and the head presses the sealing ring against the countersunk hole of the countersunk through-hole.

[0013] After adopting the above structure, the beneficial effects of the present utility model are as follows: the gap formed between the rubber core body and the positioning hole is sealed by a sealing line formed by an annular sealing ring clamped by the outer convex ring and the retaining ring for waterproof treatment. The positioning of the annular sealing ring is carried out together when the bottom plate is connected to the housing. This structure can ensure the sealing effect between the rubber core body and the positioning hole, improve the disassembly and assembly efficiency of the sealing structure, and the sealing ring can be reused during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is an exploded view of the first perspective of the present utility model;

[0016] Figure 3 is an exploded view of the second perspective of the present utility model;

[0017] Figure 4 is a structural diagram of the bottom plate;

[0018] Figure 5 is a three-dimensional view of the first perspective of the housing;

[0019] Figure 6 is a three-dimensional view of the second perspective of the housing;

[0020] Figure 7 is a structural diagram of the light guide column;

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 1, bottom plate; 101, top column; 102, bottom plate reinforcing rib; 2, housing; 201, positioning hole;

[0023] 201a, retaining ring; 202, countersunk through-hole; 3, rubber core body; 301, outer convex ring; 4, light guide column;

[0024] 401, positioning convex ring; 402, concave ring; 403, head; 5, top plate; 6, annular sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below with reference to the accompanying drawings.

[0026] As Figures 1 to 7 shown, a waterproof junction box without glue application of the present utility model includes a housing 2 and a bottom plate 1 detachably connected to the housing 2; a plurality of positioning holes 201 are provided on a surface of the housing 2 away from the bottom plate 1; a glue core body 3 is provided in each of the positioning holes 201; an outer convex ring 301 is provided on an outer side wall of the glue core body 3; a retaining ring 201a is provided inside the positioning hole 201; an annular sealing ring 6 is provided on a surface of the retaining ring 201a close to the bottom plate 1; after the bottom plate 1 presses the glue core body 3, the outer convex ring 301 presses the annular sealing ring 6 on the retaining ring 201a;

[0027] The circuit structure inside the glue core body 3 has no essential difference from the prior art, so it will not be elaborated here;

[0028] The gap formed between the glue core body 3 and the positioning hole 201 is sealed by an annular sealing ring 6 clamped by the outer convex ring 301 and the retaining ring 201a to form a sealing line for waterproof treatment. The positioning of the annular sealing ring 6 is carried out together when the bottom plate 1 is connected to the housing 2. This structure can ensure the sealing effect between the glue core body 3 and the positioning hole 201, improve the disassembly and assembly efficiency of the sealing structure, and the sealing ring can be reused during maintenance.

[0029] As a preferred embodiment of the present utility model, a top plate 5 is provided inside the housing 2; the top plate 5 covers the glue core body 3; the bottom plate 1 presses the top plate 5 on the glue core body 3; using the same top plate 5 to press and fix all the glue core bodies 3 makes the positioning of the glue core body 3 more convenient.

[0030] As a preferred embodiment of the present utility model, a top column 101 is provided on the bottom plate 1 at a position directly opposite to the glue core body 3; the top column 101 presses the top plate 5 on the glue core body 3; by directly abutting the top column 101 against the top plate 5 opposite to the glue core body 3, the strength of the top plate 5 at the position of the glue core body 3 is enhanced, ensuring that the annular sealing ring 6 can be tightly pressed to guarantee the sealing effect.

[0031] As a preferred embodiment of the present utility model, a bottom plate reinforcing rib 102 is provided on the surface of the top plate 5.

[0032] As a preferred embodiment of the present utility model, a threaded hole is provided inside the positioning hole 201; providing the threaded hole facilitates the connection with a connector with an external thread on an external connection wire.

[0033] As a preferred embodiment of the present utility model, a countersunk through hole 202 communicating with the inner cavity of the housing 2 is provided on the outer surface of the housing 2; a light guide column 4 is provided in the countersunk through hole 202; the light guide column 4 is matched with the countersunk through hole 202; positioning convex rings 401, concave rings 402 and heads 403 are sequentially arranged along the length direction of the column body of the light guide column 4; the head 403 is embedded into the counterbore of the countersunk through hole 202; the positioning convex ring 401 is embedded and fixed in the through hole of the countersunk through hole 202; a sealing ring is sleeved outside the concave ring 402; the head 403 presses the sealing ring against the counterbore of the countersunk through hole 202;

[0034] After the positioning convex ring 401 is embedded into the through hole part of the countersunk through hole 202, an interference fit is formed to fix the column body of the light guide column 4 in the countersunk through hole 202, and then the head 403 presses the sealing ring against the counterbore of the countersunk through hole 202 to form a sealing structure; the light guide column 4 is made of a transparent flexible material, and silicone rubber material can be selected; after being powered on, the light source inside the housing 2 emits light, and the light inside the housing 2 is transmitted to the surface through the light guide column 4, which is convenient for users to judge whether the junction box is powered on.

[0035] The above description is only a preferred embodiment of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.

Claims

1. A waterproof junction box without glue, characterized in that: The invention comprises a shell (2) and a bottom plate (1) detachably connected to the shell (2); a plurality of positioning holes (201) are arranged on a surface of the shell (2) away from the bottom plate (1); a rubber core body (3) is arranged in each of the positioning holes (201); an outer convex ring (301) is arranged on the outer side wall of the rubber core body (3); a retaining ring (201a) is arranged inside the positioning hole (201); an annular sealing ring (6) is arranged on the surface of the retaining ring (201a) close to the bottom plate (1); and after the bottom plate (1) is pressed against the rubber core body (3), the outer convex ring (301) presses the annular sealing ring (6) against the retaining ring (201a).

2. The glue-free waterproof junction box according to claim 1, characterized in that: A top plate (5) is arranged inside the shell (2); the top plate (5) covers the rubber core body (3); and the bottom plate (1) presses the top plate (5) onto the rubber core body (3).

3. The glue-free waterproof junction box according to claim 2, characterized in that: The bottom plate (1) is provided with a top column (101) at a position directly facing the rubber core body (3); the top column (101) presses the top plate (5) onto the rubber core body (3).

4. The glue-free waterproof junction box according to claim 3, characterized in that: Bottom plate reinforcing ribs (102) are provided on the surface of the top plate (5).

5. The glue-free waterproof junction box according to claim 1, characterized in that: A threaded hole is provided inside the positioning hole (201).

6. The glue-free waterproof junction box according to claim 1, characterized in that: The outer surface of the shell (2) is provided with a countersunk through hole (202) connected to the inner cavity of the shell (2); a light guide column (4) is provided in the countersunk through hole (202); the light guide column (4) matches the countersunk through hole (202); a column body of the light guide column (4) is provided with a positioning convex ring (401), a concave ring (402) and a head (403) in sequence along the length direction; the head (403) is embedded in the countersunk through hole of the countersunk through hole (202); the positioning convex ring (401) is embedded and fixed in the through hole of the countersunk through hole (202); a sealing ring is provided on the outer cover of the concave ring (402); and the head (403) presses the sealing ring against the countersunk through hole of the countersunk through hole (202).

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