An electrical junction box

Abstract

The utility model relates to electrical technical field, concretely relates to an electrical junction box, including box body, the upper end opening of box body is detachable connection cover plate, is equipped with a plurality of sealing element on the outside of box body, and sealing element and the threading hole of box body side wall are one-to-one correspondence, left side sealing element includes fixed pipe and elastic pipe, fixed pipe is fixed in the outside of box body, and right end opening cover is in the outside of corresponding threading hole, and the drive pipe is slidably arranged in the fixed pipe, drive pipe is slidably contacted with the inner wall of fixed pipe, and the drive pipe and shell are equipped with elastic pipe, the elastic pipe is the annular pipe that the hollow round pipe body both ends meet constitutes, and the elastic pipe is concentric with drive pipe, and the outer wall left end of elastic pipe is fixedly connected with the right end of drive pipe, and the outer wall right end is fixedly connected with box body, the utility model has solved the problem that the water vapor is easy to enter the junction box through the gap of cable and wiring hole.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to an electrical junction box. Background Technology

[0002] Electrical junction boxes are key components in electrical systems used to connect, protect, and distribute cables. Multiple cables are reliably connected through the wiring components (terminals or terminals) inside the junction box, avoiding the risk of short circuits or electric shocks caused by exposed wires. Junction boxes serve as a transition for cable connections.

[0003] The cable enters the junction box through the wiring hole. However, after the cable is connected to the wiring assembly, there is a gap between the cable and the wiring hole. In a humid environment, moisture from the outside environment can easily enter the junction box through the gap between the cable and the wiring hole. The connection between the cable and the wiring assembly is affected by moisture, which can easily cause a short circuit and affect the safety of the circuit. Utility Model Content

[0004] This invention addresses the problem of moisture easily entering junction boxes through gaps in cables and wiring holes; it provides an electrical junction box that improves the sealing of gaps in cables and wiring holes, enhances the safety of the junction box, and can be reused.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] An electrical junction box includes a box body with a detachable cover plate at the upper opening. Multiple sealing elements are provided on the outer surface of the box body, each corresponding to a wire-passing hole on the side wall of the box body. The sealing element on the left side includes a fixed tube and an elastic tube. The fixed tube is fixed to the outside of the box body, with its right end covering the corresponding wire-passing hole. A driving tube is slidably disposed inside the fixed tube, and a driving element is provided on the fixed tube to drive the driving tube to move to the right. The outer wall of the driving tube slides in contact with the inner wall of the fixed tube. An elastic tube is disposed between the driving tube and the box body. The elastic tube is a hollow circular tube with its two ends connected together to form an annular tube. The elastic tube is concentric with the driving tube, and the left end of the outer wall of the elastic tube is fixedly connected to the right end of the driving tube, and the right end of the outer wall is fixedly connected to the box body.

[0007] Furthermore, the box body is provided with a wiring assembly; the bottom surface of the cover plate is provided with a U-shaped groove that corresponds to the upper end of the side wall of the box body, the top surface of the U-shaped groove is fixed with a sealing ring, and the cover plate is detachably connected to the box body via a connector.

[0008] Furthermore, the connecting component includes a horizontal plate and bolts. The upper part of the front and rear outer surfaces of the box body is fixed with a horizontal plate. There is a gap between the horizontal plate and the cover plate. Bolts are installed on the cover plate from top to bottom near the four corners. The free end of the bolt moves downward through the horizontal plate and is limited by a nut.

[0009] Furthermore, the driving component of the seal on the left side includes a sleeve and a movable tube. The sleeve is fitted over the fixed tube and its right end is fixedly connected to the box body. The right end of the movable tube extends between the fixed tube and the sleeve. The outer wall of the movable tube is threadedly connected to the inner wall of the sleeve. The upper and lower ends of the peripheral wall of the fixed tube are provided with sliding holes. A driving rod with its free end passing through the sliding hole is fixed on the peripheral wall of the driving tube. The free end of each driving rod is located between the sleeve and the fixed tube on the right side of the movable tube.

[0010] Furthermore, the inner wall of the movable tube of the sealing element on the left side slides in contact with the outer wall of the fixed tube, and the left end of the movable tube is connected to a drive ring located on the left side of the sleeve, with ridges arrayed on the outer ring surface of the drive ring.

[0011] Furthermore, the inner diameter of the drive tube is equal to the inner diameter of the corresponding threading hole; when each drive rod on the left side of the seal contacts the left end of the sliding hole, the elastic tube on the left side of the seal is in its natural state, and the inner diameter of the outer wall of the elastic tube is equal to the inner diameter of the drive tube.

[0012] The beneficial effects of this utility model through the above technical solution are as follows:

[0013] In use, the cable enters the box through the corresponding seal and through-hole. The cable is then connected to the wiring assembly. The elastic tube on the seal is compressed under the action of the corresponding drive tube, and the elastic tube wraps around the cable in a ring shape. The elastic tube wrapped around the cable can prevent external moisture from entering the box through the through-hole. The opening at the top of the box is sealed by a cover plate to further prevent moisture from entering. Therefore, this invention can prevent moisture from affecting the connection of the cable and wiring assembly inside the box.

[0014] After the cable of this invention is wrapped and held tightly by the elastic tube, the elastic tube can limit the movement of the cable and prevent the cable from being pulled apart by external force, thus preventing the cable and the wiring assembly from separating.

[0015] The sealing element of this invention can be reused repeatedly and is highly practical. After the sealing element releases the restriction on the cable, it facilitates the maintenance and replacement of the cable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a sectional front view of the present invention (viewed through the seal).

[0018] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the connection between the drive ring and the movable tube of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the fixing tube of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the drive tube connecting the elastic tube of this utility model;

[0022] Figure 7 This is a structural schematic diagram of the cover plate of this utility model (viewed from below).

[0023] The attached diagram is labeled as follows: 1. Box body, 2. Cover plate, 3. Wire hole, 4. Housing, 5. Fixed tube, 6. Elastic tube, 7. Drive tube, 9. U-shaped groove, 10. Sealing ring, 11. Horizontal plate, 12. Bolt, 13. Nut, 14. Through hole one, 15. Sleeve, 16. Movable tube, 17. Sliding hole, 18. Drive rod, 19. Drive ring, 20. Protruding rib, 21. Wiring assembly. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 7 As shown, an electrical junction box includes a box body 1. A cover plate 2 is detachably connected to the upper opening of the box body 1. Multiple sealing elements are provided on the outer surface of the box body 1, each corresponding to a wire-passing hole 3 on the side wall of the box body 1. Each wire-passing hole 3 is a circular hole. The sealing element on the left side includes a fixing tube 5 and an elastic tube 6. The fixing tube 5 is a circular tube open at both ends, fixed to the outside of the box body 1, with its right end covering the corresponding wire-passing hole 3. A drive tube 7 is slidably disposed inside the fixing tube 5. The driving tube 7 is a circular tube with an outer diameter that matches the inner diameter of the fixed tube 5. The fixed tube 5 is provided with a driving component for driving the driving tube 7 to move to the right. The outer wall of the driving tube 7 slides in contact with the inner wall of the fixed tube 5. An elastic tube 6 is provided between the driving tube 7 and the housing 4. The elastic tube 6 is a circular tube formed by connecting the two ends of a hollow circular tube. The elastic tube 6 is made of elastic rubber. The elastic tube 6 is concentric with the driving tube 7. The left end of the outer wall of the elastic tube 6 is fixedly connected to the right end of the driving tube 7, and the right end of the outer wall is fixedly connected to the housing 1.

[0026] The seals on the left and right sides of the box are symmetrical.

[0027] The box body 1 is equipped with a wiring assembly; the cover plate 2 is a rectangular plate, and the bottom surface of the cover plate 2 is provided with a U-shaped groove 9 that corresponds to the upper end of the side wall of the box body 1. A sealing ring 10 is fixed on the top surface of the U-shaped groove 9. The sealing ring 10 is an annular body made of elastic rubber that corresponds to the top surface of the U-shaped groove 9. The cover plate 2 is detachably connected to the box body 1 via a connector.

[0028] The connecting component includes a horizontal plate 11 and bolts 12. The upper part of the front and rear outer surfaces of the box body 1 is fixed with a horizontal plate 11. There is a gap between the horizontal plate 11 and the cover plate 2. Near the four corners of the cover plate 2, bolts 12 are movably installed from top to bottom. The free end of the bolt 12 moves downward through the horizontal plate 11. The bolt 12 is limited by a nut 13. The cover plate 2 is provided with a through hole 14 for the free end of the bolt 12 to pass through, and the horizontal plate 11 is provided with a through hole 2 for the free end of the bolt 12 to pass through.

[0029] The driving component of the seal on the left includes a sleeve 15 and a movable tube 16. The sleeve 15 is fitted over the fixed tube 5 and its right end is fixedly connected to the box. There is a gap between the inner wall of the sleeve and the fixed tube 5. The right end of the movable tube 16 extends between the fixed tube 5 and the sleeve 15. The outer wall of the movable tube 16 is threaded to the inner wall of the sleeve 15. The outer wall of the movable tube 16 is provided with an external thread. The inner wall of the sleeve 15 is provided with an internal thread that matches the external thread on the movable tube 16. The upper and lower ends of the peripheral wall of the fixed tube 5 are provided with sliding holes 17. The sliding holes 17 are elongated holes opened along the length direction of the fixed tube 5. The right end of the sliding holes 17 penetrates the right end of the fixed tube 5. The peripheral wall of the driving tube 7 is fixed with a driving rod 18 whose free end passes through the sliding hole 17. The free end of each driving rod 18 is located between the sleeve 15 and the fixed tube 5 on the right side of the movable tube 16. The driving rod 18 is a rectangular rod that slides in contact with the sliding hole 17.

[0030] The inner wall of the movable tube 16 of the sealing element on the left side slides in contact with the outer wall of the fixed tube 5. The left end of the movable tube 16 is connected to a drive ring 19 located on the left side of the sleeve 15. The outer ring surface of the drive ring 19 is arrayed with protrusions 20. The protrusions 20 are elongated and facilitate the rotation of the drive ring 19.

[0031] The inner diameter of the drive tube 7 is equal to the inner diameter of the corresponding thread hole 3; when each drive rod 18 on the left side of the seal contacts the left end of the sliding hole, the elastic tube 6 on the left side of the seal is in its natural state, and the inner diameter of the outer wall of the elastic tube 6 is equal to the inner diameter of the drive tube 7; the natural state of the elastic tube is that the gas inside is not compressed, and the elastic tube is a regular annular tube.

[0032] In the initial state, the elastic tube 6 inside each of the seals is in a natural state. At this time, the elastic tube 6 inside each seal will not affect the cable passing through the wire hole 3.

[0033] In use, first unscrew the nuts 13 on each bolt 12. After removing multiple bolts 12, open the cover plate 2. At this time, the wiring assembly 21 inside the box 1 is exposed. Then, the end of the cable passes through the drive tube 7 and the elastic tube 6 of the corresponding seal in sequence, and then passes through the wire hole 3 of the corresponding seal into the box 1. The end of the cable inside the box 1 is connected to the wiring assembly 21. Then, rotate the drive ring 19 on the left seal. The movable tube 16 rotates with the drive ring 19, causing the movable tube 16 to move to the right. The right end of the movable tube 16 presses against the drive rod 18 on the drive tube 7. The drive rod 18 drives the drive tube 7 to move to the right. The right end of the drive tube 7 presses against the elastic tube 6. After the gas inside the elastic tube 6 is compressed, the inner ring of the peripheral wall of the elastic tube 6 deforms towards the inside of the elastic tube 6, and the outer ring of the peripheral wall deforms towards the direction of the fixed tube. The inner ring of the peripheral wall of the elastic tube 6 is in a wrapping state, wrapping around the outer circumference of the cable inside the elastic tube 6, until the movable tube 16 is difficult to move. When the cable moves to the right, the elastic tube 6 inside the seal is compressed to its limit. At this time, the cable inside the left seal is wrapped and held tightly by the elastic tube to the maximum extent. This not only prevents external moisture from entering the box 1 through the wire hole 3, but also limits the cable, preventing it from being pulled apart by external force and causing the cable and wiring assembly 21 to detach. Moreover, since the left end of the outer wall of the elastic tube is connected to the right end of the drive tube 7 and the right end of the outer wall is connected to the box 1, moisture entering through the gap between the drive tube 7 and the fixed tube 5, the gap between the fixed tube 5 and the movable tube 16, and the gap between the movable tube 16 and the sleeve 15 can all be blocked by the elastic tube 6. The moisture will not enter the box 1 through the wire hole 3. Similarly, when the drive tube 7 on the right seal moves to the left, the drive tube 7 squeezes the elastic tube 6 inside the right seal. The elastic tube 6 inside the right seal wraps around the cable in a ring-like state, and the elastic tube 6 blocks external moisture from entering the box 1 through the right seal and the wire hole 3.

[0034] Finally, the groove 9 on the cover plate 2 is locked on the outside of the upper end of the box body 1. The cover plate 2 is connected to the horizontal plate 11 by bolt 12. When the nut 13 on the bolt 12 is tightened, the head of the bolt presses the cover plate 2 downward, and the sealing ring 10 is compressed, thereby making the cover plate 2 in a sealed state to block the opening at the upper end of the box body 1.

[0035] The drive tube 7 on the left side of the seal moves to the left, which can release the elastic tube from the cable, making it easier to repair and replace the cable; similarly, the right side seal can also release the elastic tube from the cable, making it easier to repair and replace the cable.

[0036] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. An electrical junction box, comprising a box body (1), wherein a cover plate (2) is detachably connected to the upper opening of the box body (1), characterized in that, Multiple sealing elements are provided on the outer side of the box body (1). The sealing elements correspond one-to-one with the wire holes (3) opened on the side wall of the box body (1). The sealing element on the left side includes a fixed tube (5) and an elastic tube (6). The fixed tube (5) is fixed outside the box body (1) and the right end of the tube is covered outside the corresponding wire hole (3). The fixed tube (5) is provided with a drive tube (7) that slides left and right inside the fixed tube (5). The fixed tube (5) is provided with a drive element for driving the drive tube (7) to move to the right. The outer wall of the drive tube (7) slides in contact with the inner wall of the fixed tube (5). An elastic tube (6) is provided between the drive tube (7) and the shell (4). The elastic tube (6) is a circular tube formed by connecting the two ends of a hollow circular tube. The elastic tube (6) is concentric with the drive tube (7). The left end of the outer wall of the elastic tube (6) is fixedly connected to the right end of the drive tube (7), and the right end of the outer wall is fixedly connected to the box body (1).

2. An electrical junction box according to claim 1, characterized in that, The box (1) is provided with a wiring assembly (21); the bottom surface of the cover plate (2) is provided with a groove (9) that corresponds to the upper end of the side wall of the box (1), and a sealing ring (10) is fixed on the top surface of the groove (9). The cover plate (2) is detachably connected to the box (1) via a connector.

3. An electrical junction box according to claim 2, characterized in that, The connector includes a horizontal plate (11) and bolts (12). The upper part of the front and rear outer surfaces of the box (1) is fixed with a horizontal plate (11). There is a gap between the horizontal plate (11) and the cover plate (2). Bolts (12) are installed on the cover plate (2) from top to bottom near the four corners. The free end of the bolt (12) moves downward through the horizontal plate (11). The bolt (12) is limited by a nut (13).

4. An electrical junction box according to claim 1, characterized in that, The driving component of the seal on the left includes a sleeve (15) and a movable tube (16). The sleeve (15) is fitted over the fixed tube (5) and its right end is fixedly connected to the box body. The right end of the movable tube (16) extends between the fixed tube (5) and the sleeve (15). The outer wall of the movable tube (16) is threadedly connected to the inner wall of the sleeve (15). The upper and lower ends of the peripheral wall of the fixed tube (5) are provided with sliding holes (17). A driving rod (18) with its free end passing through the sliding hole (17) is fixed on the peripheral wall of the driving tube (7). The free end of each driving rod (18) is located between the sleeve (15) and the fixed tube (5) on the right side of the movable tube (16).

5. An electrical junction box according to claim 4, characterized in that, The inner wall of the movable tube (16) of the sealing element on the left side slides in contact with the outer wall of the fixed tube (5). The left end of the movable tube (16) is connected to a drive ring (19) located on the left side of the sleeve (15). The outer ring surface of the drive ring (19) is arrayed with protrusions (20).

6. An electrical junction box according to claim 5, characterized in that, The inner diameter of the drive tube (7) is equal to the inner diameter of the corresponding thread hole (3); when each drive rod (18) on the left side of the seal contacts the left end of the sliding hole, the elastic tube (6) on the left side of the seal is in a natural state, and the inner diameter of the outer wall of the elastic tube (6) is equal to the inner diameter of the drive tube (7).

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