A junction box with a breathable and waterproof structure

Abstract

The utility model discloses a junction box with a breathable and waterproof structure, and relates to the technical field of junction boxes. It includes a support plate, a protective frame, an inlet pipe, an externally threaded pipe and a threaded cover. The junction box body is installed above the support plate, and a wire pressing block is installed on the upper surface of the support plate. The protective frame is provided with a breathable circular hole, and a breathable and waterproof membrane is installed on the inner wall of the protective frame. The inlet pipe is installed on the front surface of the protective frame, and an externally threaded pipe is installed on the front surface of the inlet pipe. The outer side of the externally threaded pipe is connected with a threaded cover. The junction box with a breathable and waterproof structure is provided with an elastic locking piece, a threaded cover and a limiting groove. When the wire is installed, the threaded cover is rotated, and the threaded cover moves upward, driving the limiting groove in the threaded cover to move upward, and then the limiting groove squeezes the elastic locking piece, so that the elastic locking piece closes inward, clamps the wire, thereby completing the fixation of the wire and preventing the wire from being decoupled.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, in particular to a junction box with a breathable and waterproof structure. Background Art

[0002] In home decoration, the junction box is one of the electrical auxiliary materials, because the wires used for decoration pass through the wire conduit, and the junction box is used as a transition at the joint of the wires (for example, the line is relatively long, or the wire conduit needs to turn a corner). The wire conduit is connected to the junction box, and the wires in the wire conduit are connected in the junction box, which plays a role in protecting and connecting the wires.

[0003] The characteristics of ordinary junction box are simple structure, and can ensure that the terminal block and the protection tube are firmly connected to the junction box. The connection between the alien wire and the temperature sensing element is through the connection post, which has good electrical contact performance.

[0004] For example, a waterproof junction box with good waterproof performance is disclosed in the publication number CN203251039U. By setting a waterproof layer on the surface of the metal box, the junction box has better waterproofness and environmental adaptability. In addition, due to the characteristics of the metal itself, compared with similar plastic products, the junction box also has the characteristics of heat dissipation, electromagnetic shielding, anti-static, flame retardant, etc. It can adapt to the high and low temperature environment of the equipment. However, the device still has certain defects;

[0005] During the use of the junction box, the junction box cannot fix the wires, so the wires are easily separated from the wire pressing blocks in the junction box under the action of external forces, causing the wires to come off, posing a great safety hazard.

[0006] Therefore, we propose a junction box with a breathable and waterproof structure to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a junction box with a breathable and waterproof structure to solve the problem raised by the above-mentioned background technology that the existing junction boxes on the market cannot fix the wires during use, so that the wires are easily separated from the wire pressing blocks in the junction box under the action of external forces, thereby causing the wires to come off, posing a great safety hazard.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a junction box with a breathable and waterproof structure, comprising a support plate, a protective frame, an inlet pipe, an externally threaded pipe and a threaded cover, a junction box body is installed above the support plate, and a wire pressing block is installed on the upper surface of the support plate, and a protective frame is arranged on the outer side of the wire pressing block, a breathable circular hole is opened on the protective frame, and a breathable and waterproof membrane is installed on the inner wall of the protective frame, and a positioning groove is opened on the upper surface of the protective frame, an inlet pipe is installed on the front surface of the protective frame, and an externally threaded pipe is installed on the front surface of the inlet pipe, and an elastic locking piece is installed on the front surface of the externally threaded pipe, the outer side of the externally threaded pipe is threadedly connected with a threaded cover, and a limiting groove is opened inside the threaded cover, and a second through hole is opened on the front surface of the threaded cover.

[0009] Preferably, the upper surfaces of the support plate and the junction box body are respectively provided with first threaded holes and second threaded holes, four first threaded holes and four second threaded holes are respectively provided, and the first threaded holes and the second threaded holes are distributed in a rectangular structure.

[0010] With the above structural design, the junction box can be fixed at a desired position through the second threaded hole, and the first threaded hole is used to fix the waterproof cover.

[0011] Preferably, the protection frame is located inside the junction box body, and the protection frame is designed as a breathable structure, and the protection frame is fixed to the upper surface of the support plate.

[0012] By adopting the above-mentioned structural design, the wire pressing block in the protective frame can play a better breathable and waterproof role under the action of the breathable circular holes and the breathable waterproof membrane. The distance between the gas molecules in the breathable waterproof membrane is relatively large, and they can pass through the air holes of the breathable waterproof membrane during the diffusion movement, while the distance between the liquid molecules is smaller than the distance between the air holes, and under the action of surface tension, the liquid molecules cannot pass through the breathable waterproof membrane, that is, it plays a waterproof role, and plays a waterproof and breathable role for the internal wire pressing block and the wires connected to the wire pressing block.

[0013] Preferably, a waterproof cover is provided above the protective frame, and a protrusion is installed on the inner wall of the waterproof cover, and the protrusion and the positioning groove on the protective frame can be engaged with each other.

[0014] With the above structural design, when installing the waterproof cover, aligning the protrusion under the waterproof cover with the positioning groove on the protective frame can quickly position the waterproof cover so that the waterproof cover will not deviate during installation.

[0015] Preferably, the waterproof cover is installed with fixing bolts, four fixing bolts are provided, and the center lines of the fixing bolts coincide with the center lines of the first threaded holes.

[0016] With the above structural design, the waterproof cover is placed on the upper surface of the junction box body and the protrusion below the waterproof cover is aligned with the positioning groove on the protective frame. Then, the fixing bolt is rotated to connect the fixing bolt with the first threaded hole on the support plate, thereby completing the fixing of the waterproof cover.

[0017] Preferably, the inlet pipe passes through the junction box body, and a first through hole is formed on the front surface of the inlet pipe.

[0018] With the above structural design, the wire can pass through the wire inlet tube and the first through hole on the wire inlet tube and enter the wire pressing block to achieve installation of the wire.

[0019] Preferably, the elastic locking piece is designed to have an inclined structure, and the elastic locking piece is distributed in a circular structure, and the elastic locking piece is located inside the limiting groove.

[0020] With the above structural design, after the wire is installed, the threaded cover is rotated and the threaded cover moves upward, driving the limiting groove in the threaded cover to move upward, and then the limiting groove squeezes the elastic locking piece, causing the elastic locking piece to close inward to clamp the wire, thereby completing the fixation of the wire and preventing the wire from being derailed.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the junction box provided with a breathable and waterproof structure:

[0022] 1. A breathable circular hole and a breathable waterproof film are provided, so that the wire pressing block in the protective frame plays a good breathable and waterproof role under the action of the breathable circular hole and the breathable waterproof film. The distance between gas molecules in the breathable waterproof film is large, and the gas molecules can pass through the breathable holes of the breathable waterproof film during the diffusion movement, while the distance between liquid molecules is smaller than the distance between the breathable holes, and under the action of surface tension, the liquid molecules cannot pass through the breathable waterproof film, that is, it plays a waterproof role, and plays a waterproof and breathable role for the internal wire pressing block and the wires connected to the wire pressing block;

[0023] 2. An elastic locking piece, a threaded cover and a limiting groove are provided. When the wire is installed, the threaded cover is rotated and moves upward, driving the limiting groove in the threaded cover to move upward, and then the limiting groove squeezes the elastic locking piece, so that the elastic locking piece closes inward and clamps the wire, thereby fixing the wire and preventing the wire from being derailed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the top-sectional structure of the utility model;

[0025] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0027] Figure 4 This is a schematic diagram of the top view structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the protective frame and positioning groove structure of the utility model.

[0029] In the figure: 1. support plate; 2. junction box body; 3. first threaded hole; 4. second threaded hole; 5. wire pressing block; 6. protective frame; 7. air permeable circular hole; 8. air permeable waterproof membrane; 9. positioning groove; 10. waterproof cover; 11. fixing bolt; 12. wire inlet pipe; 13. first through hole; 14. external threaded pipe; 15. elastic locking piece; 16. threaded cover; 17. limit groove; 18. second through hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-5The utility model provides a technical solution: a junction box with a breathable and waterproof structure, comprising a support plate 1, a junction box body 2, a first threaded hole 3, a second threaded hole 4, a wire pressing block 5, a protective frame 6, a breathable circular hole 7, a breathable and waterproof membrane 8, a positioning groove 9, a waterproof cover 10, a fixing bolt 11, an inlet pipe 12, a first through hole 13, an externally threaded pipe 14, an elastic locking piece 15, a threaded cover 16, a limiting groove 17 and a second through hole 18, characterized in that: a junction box body 2 is installed above the support plate 1, and the upper surfaces of the support plate 1 and the junction box body 2 are respectively provided with a first threaded hole 3 and a second threaded hole 4, four of the first threaded hole 3 and the second threaded hole 4 are respectively provided, and the first threaded hole 3 and the second threaded hole 4 are both distributed in a rectangular structure, and the junction box can be fixed at a desired position through the second threaded hole 4 The first threaded hole 3 is used to fix the waterproof cover 10, and a wire pressing block 5 is installed on the upper surface of the support plate 1, and a protective frame 6 is arranged on the outside of the wire pressing block 5, the protective frame 6 is located on the inner side of the junction box body 2, and the protective frame 6 is designed with a breathable structure, and the protective frame 6 is fixed to the upper surface of the support plate 1, so that the wire pressing block 5 in the protective frame 6 plays a better breathable and waterproof role under the action of the breathable circular hole 7 and the breathable waterproof membrane 8. The distance between the gas molecules in the breathable waterproof membrane 8 is large, and they can pass through the air holes of the breathable waterproof membrane 8 during the diffusion movement, while the distance between the liquid molecules is smaller than the distance between the air holes, and under the action of surface tension, the liquid molecules cannot pass through the breathable waterproof membrane 8, that is, it plays a waterproof role, and plays a waterproof and breathable role for the internal wire pressing block 5 and the wires connected to the wire pressing block 5.

[0032] A waterproof cover 10 is provided above the protective frame 6, and a convex block is installed on the inner wall of the waterproof cover 10, and the convex block and the positioning groove 9 on the protective frame 6 can be mutually engaged. When installing the waterproof cover 10, align the convex block below the waterproof cover 10 with the positioning groove 9 on the protective frame 6, which can quickly position the waterproof cover 10 so that the waterproof cover 10 will not be offset during installation. A fixing bolt 11 is installed on the waterproof cover 10, and four fixing bolts 11 are provided, and the center line of the fixing bolt 11 is aligned with the center line of the first threaded hole 3. The center lines overlap with each other, the waterproof cover 10 is placed on the upper surface of the junction box body 2 and the convex block below the waterproof cover 10 is aligned with the positioning groove 9 on the protection frame 6, and then the fixing bolt 11 is rotated to connect the fixing bolt 11 with the first threaded hole 3 on the support plate 1, thereby completing the fixing of the waterproof cover 10, the protection frame 6 is provided with a ventilated circular hole 7, and the inner wall of the protection frame 6 is installed with a ventilated waterproof membrane 8, and the upper surface of the protection frame 6 is provided with a positioning groove 9, and the front surface of the protection frame 6 is installed with an inlet pipe 1 2, the inlet pipe 12 passes through the junction box body 2, and the front surface of the inlet pipe 12 is provided with a first through hole 13, so that the wire can pass through the inlet pipe 12 and the first through hole 13 on the inlet pipe 12 to enter the position of the wire pressing block 5, and the installation of the wire is realized, and the front surface of the inlet pipe 12 is installed with an external threaded tube 14, and the front surface of the external threaded tube 14 is installed with an elastic locking piece 15, the elastic locking piece 15 is designed with an inclined structure, and the elastic locking piece 15 is distributed in a circular structure, and the elastic locking piece 15 is located at the limit groove 17 Inside, when the wire is installed, the threaded cover 16 is rotated, and the threaded cover 16 moves upward, driving the limiting groove 17 in the threaded cover 16 to move upward, and then the limiting groove 17 squeezes the elastic locking piece 15, so that the elastic locking piece 15 closes inward to clamp the wire, thereby completing the fixation of the wire and preventing the wire from being derailed. The outer side of the external threaded tube 14 is threadedly connected with the threaded cover 16, and the limiting groove 17 is provided inside the threaded cover 16, and a second through hole 18 is provided on the front surface of the threaded cover 16.

[0033] Working principle: When using the junction box with a breathable and waterproof structure, first, pass the wire through the wire inlet tube 12 to the position of the wire pressing block 5, connect the wire, and then place the waterproof cover 10 on the upper surface of the junction box body 2 and align the protrusion below the waterproof cover 10 with the positioning groove 9 on the protective frame 6, and then rotate the fixing bolt 11 to connect the fixing bolt 11 with the first threaded hole 3 on the support plate 1, so as to complete the fixing of the waterproof cover 10, and then rotate the threaded cover 16, the threaded cover 16 moves upward, driving the limiting groove 17 in the threaded cover 16 to move upward, and then the limiting groove 17 squeezes the elastic locking piece 15, so that the elastic locking piece 15 closes inward, clamps the wire, and completes the fixing of the wire to prevent the wire from being decoupled. Thus, a series of work is completed. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A junction box with a breathable and waterproof structure, comprising a support plate (1), a protective frame (6), an inlet pipe (12), an externally threaded pipe (14) and a threaded cover (16), characterized in that: A junction box body (2) is installed above the support plate (1), and a wire pressing block (5) is installed on the upper surface of the support plate (1), and a protective frame (6) is arranged on the outer side of the wire pressing block (5), a ventilating circular hole (7) is provided on the protective frame (6), and a ventilating waterproof membrane (8) is installed on the inner wall of the protective frame (6), and a positioning groove (9) is provided on the upper surface of the protective frame (6), an inlet pipe (12) is installed on the front surface of the protective frame (6), and an external threaded pipe (14) is installed on the front surface of the inlet pipe (12), and an elastic locking piece (15) is installed on the front surface of the external threaded pipe (14), and a threaded cover (16) is threadedly connected to the outer side of the external threaded pipe (14), and a limiting groove (17) is provided inside the threaded cover (16), and a second through hole (18) is provided on the front surface of the threaded cover (16).

2. The junction box with a breathable and waterproof structure according to claim 1, characterized in that: The upper surfaces of the support plate (1) and the junction box body (2) are respectively provided with a first threaded hole (3) and a second threaded hole (4), four of the first threaded holes (3) and four of the second threaded holes (4) are respectively provided, and the first threaded holes (3) and the second threaded holes (4) are both distributed in a rectangular structure.

3. The junction box with a breathable and waterproof structure according to claim 1, characterized in that: The protective frame (6) is located on the inner side of the junction box body (2), and the protective frame (6) is designed to have a breathable structure, and the protective frame (6) is fixed to the upper surface of the support plate (1).

4. The junction box with a breathable and waterproof structure according to claim 1, characterized in that: A waterproof cover (10) is arranged above the protective frame (6), and a convex block is installed on the inner wall of the waterproof cover (10), and the convex block and the positioning groove (9) on the protective frame (6) can be mutually engaged.

5. The junction box with a breathable and waterproof structure according to claim 4, characterized in that: The waterproof cover (10) is provided with fixing bolts (11), four fixing bolts (11) are provided, and the center lines of the fixing bolts (11) coincide with the center lines of the first threaded holes (3).

6. The junction box with a breathable and waterproof structure according to claim 1, characterized in that: The inlet pipe (12) passes through the junction box body (2), and a first through hole (13) is provided on the front surface of the inlet pipe (12).

7. The junction box with a breathable and waterproof structure according to claim 1, characterized in that: The elastic locking piece (15) is designed to be an inclined structure, and the elastic locking piece (15) is distributed in a circular structure, and the elastic locking piece (15) is located inside the limiting groove (17).

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