Secondary locking waterproof junction box

Abstract

The utility model relates to a secondary locking waterproof junction box, which comprises an electric box, a cable harness and a locking device, and is characterized in that the cable harness is connected with the electric box through the locking device; the locking device comprises a locking shell, a first locking structure, a second locking structure and a locking piece, the locking shell is connected with the interior of the electric box, the cable harness is connected in a through hole in the middle of the locking shell, and the locking piece is arranged in the through hole and abuts against the cable harness. The first locking structure is arranged on the locking shell and abuts against one end of the locking piece, and the second locking structure is arranged on the locking shell and abuts against the first locking structure. According to the scheme, the inclined wedge type locking mechanism and the stress relief metal joint are combined and locked, two-layer locking is carried out on the electric box and the cable, the cable is locked more firmly and reliably, and the situation that the wire harness falls off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wire connection structures, in particular to a secondary locking waterproof junction box. Background Art

[0002] The connection between the cable and the electrical box is crucial to its operation. If the harness's locking mechanism has insufficient locking force, it can easily cause the harness to become detached, leading to a power outage. Traditionally, a single metal waterproof connector is used for locking. This single locking mechanism can result in insufficient locking force, causing the harness to become loose. Furthermore, the seal is weak, allowing water to easily enter, impacting the box's performance. Summary of the Invention

[0003] The utility model provides a secondary locking waterproof junction box, which aims to solve the problem that the existing locking structure has insufficient locking force and easily causes the wiring harness to become loose.

[0004] The utility model provides a secondary locking waterproof distribution box, comprising an electrical box, a cable harness and a locking device, wherein the cable harness is connected to the electrical box through the locking device; the locking device comprises a locking shell, a first locking structure, a second locking structure and a locking piece, the locking shell is connected to the interior of the electrical box, the cable harness is connected to a through hole in the middle of the locking shell, the locking piece is arranged in the through hole and abuts against the cable harness, the first locking structure is arranged in the locking shell and abuts against one end of the locking piece, and the second locking structure is arranged in the locking shell and abuts against the first locking structure.

[0005] As a further improvement of the present invention, a wedge-shaped piece is provided at the other end of the locking piece, and the wedge-shaped piece abuts against the inclined groove in the through hole.

[0006] As a further improvement of the present invention, the angle between the inclined surface of the wedge-shaped piece and the horizontal plane is in the range of 30°-60°.

[0007] As a further improvement of the present invention, the first locking structure includes a first rotating member and a first pushing block, the first rotating member is threadedly connected to the locking shell, and one end of the pushing block abuts against one end of the locking member.

[0008] As a further improvement of the present invention, when the first rotating member rotates to the left limit position, it abuts against the other end of the first pushing block.

[0009] As a further improvement of the present invention, a sealing sleeve is further included, which is arranged in the through hole and located between the first pushing block and the locking member.

[0010] As a further improvement of the present invention, the second locking structure includes a second rotating member and a second push block, the second rotating member is threadedly connected to the locking shell, and one end of the second push block is connected to the second rotating member.

[0011] As a further improvement of the present invention, when the second rotating member rotates to the left limit position, the other end of the second pushing block abuts against the first rotating member.

[0012] The beneficial effect of the utility model is that the solution locks the electrical box and the cable in two layers by combining the inclined wedge locking mechanism with the stress-relieving metal joint, making the cable locking more firm and reliable, and avoiding the situation where the wire harness falls off. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present utility model.

[0014] Figure markings: 1-electrical box, 2-cable harness, 3-locking housing, 4-locking member, 5-wedge member, 6-through hole, 7-first rotating member, 8-first push block, 9-second rotating member, 10-second push block, 11-sealing sleeve. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0016] like Figure 1 As shown, the utility model provides a secondary locking waterproof junction box, including an electrical box 1, a cable harness 2 and a locking device, the cable harness 2 is connected to the electrical box 1 through the locking device; the locking device includes a locking shell 3, a first locking structure, a second locking structure and a locking member 4, the locking shell 3 is connected to the inside of the electrical box 1, the cable harness 2 is connected to the through hole 6 in the middle of the locking shell 3, the locking member 4 is arranged in the through hole 6 and abuts against the cable harness 2, the first locking structure is arranged in the locking shell 3 and abuts against one end of the locking member 4, and the second locking structure is arranged in the locking shell 3 and abuts against the first locking structure.

[0017] As an embodiment of the present invention, a wedge-shaped member 5 is provided at the other end of the locking member 4 , and the wedge-shaped member 5 abuts against the inclined groove in the through hole 6 .

[0018] As another embodiment of the present invention, the angle between the inclined surface of the wedge-shaped member 5 and the horizontal plane is in the range of 30°-60°.

[0019] As another embodiment of the present invention, the first locking structure includes a first rotating member 7 and a first pushing block 8. The first rotating member 7 is threadedly connected to the locking housing 3, and one end of the pushing block abuts against one end of the locking member 4.

[0020] As another embodiment of the present invention, when the first rotating member 7 rotates to the left limit position, it abuts against the other end of the first pushing block 8.

[0021] As another embodiment of the present invention, a sealing sleeve 11 is further included. The sealing sleeve 11 is disposed in the through hole 6 and located between the first push block 8 and the locking member 4 .

[0022] As another embodiment of the present invention, the second locking structure includes a second rotating member 9 and a second push block 10 . The second rotating member 9 is threadedly connected to the locking housing 3 , and one end of the second push block 10 is connected to the second rotating member 9 .

[0023] As another embodiment of the present invention, when the second rotating member 9 rotates to the left limit position, the other end of the second pushing block 10 abuts against the first rotating member 7 .

[0024] The utility model provides a waterproof junction box with secondary locking. This solution locks the electrical box and the cable in two layers by combining an inclined wedge-type locking mechanism with a stress-relieving metal joint, making the cable locking more secure and reliable, and avoiding the situation where the wiring harness falls off.

[0025] This solution is applied to the electrical box 1 with waterproof requirements (IP65 and above). When the cable harness 2 passes through the box, a metal waterproof connector is required to protect the cable harness 2 and the electrical box 1 to ensure that the cable is locked and sealed. In this solution, the locking device is provided. When in use, the locking shell 3 is connected to the electrical box 1, and the cable harness 2 is inserted from the through hole 6 and connected to the electrical box 1. The first rotating member 7 is rotated toward one end of the electrical box 1. The first rotating member 7 is connected to the locking shell 3 by threads. When the first rotating member 7 is rotated to the left limit position, it abuts against the other end of the first push block 8. If the first rotating member 7 is continued to be rotated, the first push block 8 will apply a thrust to the locking member 4, wherein the wedge member 5 provided at the other end of the locking member 4 will move along the inclined groove toward the direction of the cable harness 2, pressing the cable harness 2. Then, the second rotating member 9 is rotated to move toward the electrical box 1. When the second rotating member 9 reaches the left limit position, the other end of the second pushing block 10 contacts the first rotating member 7, exerting a thrust on the first rotating member 7. At the same time, the first pushing block 8 exerts a thrust on the locking member 4 again, causing the locking member 4 to lock the cable harness 2 again. Through the two locking operations, the locking member 4 is more closely coupled to the cable harness 2, thereby increasing the locking force of the locking structure and preventing the cable from falling off.

[0026] This solution simply uses an open nylon ring wedge that mates with the inclined surface inside the metal housing, effectively locking the cable when the threads are tightened. The inherent threads of the stress-relieving metal connector also simplify the structure. A sealing sleeve 11 is positioned between the first push block 8 and the locking member 4 to effectively prevent water and dust from entering the electrical box 1, ensuring stable operation. To remove the cable harness 2, simply rotate the second rotating member 9 and the first rotating member 7 in sequence to unlock the locking member 4 from locking the cable harness 2.

[0027] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A secondary locking waterproof junction box, characterized in that: It includes an electrical box, a cable harness and a locking device, the cable harness is connected to the electrical box through the locking device; the locking device includes a locking shell, a first locking structure, a second locking structure and a locking piece, the locking shell is connected to the inside of the electrical box, the cable harness is connected to the through hole in the middle of the locking shell, the locking piece is arranged in the through hole and abuts against the cable harness, the first locking structure is arranged in the locking shell and abuts against one end of the locking piece, and the second locking structure is arranged in the locking shell and abuts against the first locking structure.

2. The secondary locking waterproof junction box according to claim 1, characterized in that: A wedge-shaped piece is provided at the other end of the locking piece, and the wedge-shaped piece abuts against the inclined groove in the through hole.

3. The secondary locking waterproof junction box according to claim 2, characterized in that: The included angle between the inclined surface of the wedge-shaped member and the horizontal plane is in the range of 30°-60°.

4. The secondary locking waterproof junction box according to claim 1, characterized in that: The first locking structure includes a first rotating member and a first pushing block. The first rotating member is threadedly connected to the locking housing. One end of the pushing block abuts against one end of the locking member.

5. The secondary locking waterproof junction box according to claim 4, characterized in that: When the first rotating member rotates to the left limit position, it abuts against the other end of the first pushing block.

6. The secondary locking waterproof junction box according to claim 4, characterized in that: It also includes a sealing sleeve, which is arranged in the through hole and located between the first pushing block and the locking member.

7. The secondary locking waterproof junction box according to claim 4, characterized in that: The second locking structure includes a second rotating member and a second pushing block. The second rotating member is threadedly connected to the locking housing, and one end of the second pushing block is connected to the second rotating member.

8. The secondary locking waterproof junction box according to claim 7, characterized in that: When the second rotating member rotates to the left limit position, the other end of the second pushing block abuts against the first rotating member.

Images