A waterproof sealed metal terminal

Abstract

The utility model discloses a waterproof sealed metal terminal, it includes waterproof box, waterproof terminal subassembly and wiring assembly, the top of waterproof box is detachably connected with waterproof apron, waterproof terminal subassembly includes installation screw seat and nut, waterproof rubber ring is slidably connected in the inside of installation screw seat, the inside of waterproof rubber ring is opened with the intermittent groove of axial direction, one side fixedly connected with the lock washer of nut, the diameter of lock washer inner ring mouth is less than the diameter of intermittent groove outer ring mouth, through above -mentioned structure, through waterproof terminal subassembly and utilize nut screwing, its inside lock washer exerts radial extrusion to waterproof rubber ring with intermittent groove, makes the elastic deformation of rubber ring after tightly wrapping cable, realizes effective radial seal, this structure can effectively resist the vibration simultaneously, prevents the loosening of nut, thereby overall has promoted the long -term sealing stability and security of terminal under the humid, many vibration etc.

Description

Technical Field

[0001] This utility model relates to the field of terminal technology, and in particular to a waterproof and sealed metal terminal. Background Technology

[0002] Metal terminals, as a basic electrical connection element, are widely used in cable connections in various fields such as new energy vehicles, industrial equipment, outdoor lighting, and rail transportation.

[0003] Traditional connectors generally lack waterproofing. When these connectors are installed inside the casing of non-sealed electrical equipment, moisture, water vapor, or condensation from the environment can easily penetrate the casing and accumulate at the connector. This can not only cause short circuits and leaks in the connector itself due to water ingress, but also lead to corrosion and damage to internal components of the electrical equipment, posing serious safety hazards. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a waterproof and sealed metal terminal that solves the problems of short circuit, leakage and corrosion caused by water ingress in traditional connectors.

[0005] This utility model also provides a metal terminal with the above-mentioned waterproof seal, comprising: a waterproof box, a waterproof terminal assembly, and a wiring assembly. The waterproof terminal assembly is fixedly connected to one side of the waterproof box, and the wiring assembly is fixedly connected inside the waterproof box. The waterproof terminal assembly and the wiring assembly are on the same horizontal line. A waterproof cover plate is detachably connected to the top of the waterproof box. The waterproof terminal assembly includes a mounting thread seat and a nut. A waterproof rubber ring is slidably connected inside the mounting thread seat. The waterproof rubber ring has an axially interrupted groove. An anti-loosening ring is fixedly connected to one side of the nut. The diameter of the inner opening of the anti-loosening ring is smaller than the diameter of the outer opening of the interrupted groove.

[0006] According to the present invention, a waterproof and sealed metal terminal is provided. The wiring assembly includes a junction box and two sets of anti-loosening units. The two sets of anti-loosening units are symmetrically connected on both sides of the junction box. Each set of anti-loosening units includes a mounting base. The mounting base is fixedly connected to one side of the junction box. A first arc-shaped clamping block is fixedly connected to the top of the mounting base. Guide rods are fixedly connected to both sides of the top of the mounting base. A spring is sleeved on the guide rod. A second arc-shaped clamping block is slidably connected to the guide rod.

[0007] According to the present invention, a waterproof and sealed metal terminal is provided, wherein a waterproof strip is fixedly connected to the bottom of the waterproof cover plate, and a waterproof groove for inserting the waterproof strip is provided inside the waterproof box.

[0008] According to the present invention, a waterproof and sealed metal terminal is provided, wherein threaded posts are fixedly connected around the inside of the waterproof box, and bolts are provided on the waterproof cover plate, and the bolts are threadedly connected to the threaded posts.

[0009] According to the present invention, a waterproof sealing metal terminal is provided, wherein the waterproof rubber ring is in the shape of a boss, and its bottom is engaged inside the mounting threaded seat, while its protrusion is engaged outside the mounting threaded seat.

[0010] According to the present invention, a waterproof and sealed metal terminal is provided, wherein the waterproof terminal assembly is fixedly connected to one side of a waterproof box by means of a mounting threaded seat.

[0011] According to the present invention, a waterproof and sealed metal terminal is provided in which the spring is configured to provide clamping force to a second arc-shaped clamping block.

[0012] According to the present invention, a waterproof and sealed metal terminal is provided, wherein mounting feet are fixedly connected around the bottom of the waterproof box, and mounting holes are provided inside the box.

[0013] Beneficial effects: 1. The waterproof sealing metal terminal of this technical solution, when the waterproof terminal assembly is tightened with a nut, its internal anti-loosening ring applies radial compression to the waterproof rubber ring with intermittent grooves, so that the rubber ring elastically deforms and tightly wraps the cable, achieving effective radial sealing. This structure can also effectively resist vibration and prevent the nut from loosening, thereby improving the long-term sealing stability and safety of the terminal in harsh environments such as humidity and vibration.

[0014] 2. The waterproof and sealed metal terminal of this technical solution uses a spring-driven symmetrical clamping unit for the wiring assembly. The wire can be easily inserted or removed by pulling the second arc-shaped clamping block outward. After being released, the spring force can automatically clamp the wire together with the first and second arc-shaped clamping blocks. This design not only ensures the stability and reliability of the electrical connection and effectively prevents the wire from loosening due to vibration, but also works in conjunction with the waterproof terminal assembly to ensure the airtightness and electrical continuity of the entire path from the external cable to the internal wire connection. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a structural diagram showing the external connection relationships of the waterproof box of this utility model; Figure 2 This is a structural diagram showing the internal connection relationships of the waterproof box of this utility model; Figure 3 This is a structural diagram showing the disassembled waterproof terminal assembly of this utility model; Figure 4This is a structural diagram showing the connection relationship of the wiring assembly of this utility model.

[0016] Legend: 1. Waterproof box; 2. Waterproof terminal assembly; 3. Wiring assembly; 101. Mounting foot; 102. Waterproof cover plate; 103. Bolt; 104. Waterproof groove; 105. Threaded post; 201. Mounting threaded seat; 202. Waterproof rubber ring; 203. Nut; 301. Junction box; 302. Mounting seat; 303. First arc-shaped clamping block; 304. Guide rod; 305. Spring; 306. Second arc-shaped clamping block; 1021, waterproof strip; 2021, intermittent groove; 2031, anti-loosening ring. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] Reference Figure 1-4 This utility model provides a waterproof and sealed metal terminal, comprising: a waterproof box 1, a waterproof terminal assembly 2, and a wiring assembly 3. The waterproof terminal assembly 2 is fixedly installed on one side wall of the waterproof box 1, and the wiring assembly 3 is fixedly installed in the internal cavity of the waterproof box 1. To ensure smooth and orderly electrical connection, the waterproof terminal assembly 2 and the wiring assembly 3 are positioned on the same horizontal axis. A waterproof cover plate 102 is detachably connected to the top opening of the waterproof box 1 to achieve sealing and protection of the internal structure of the box.

[0019] The waterproof box 1 is a cavity structure with a certain depth. The four corners of its bottom are fixedly connected with mounting feet 101. Each mounting foot 101 has a mounting hole to facilitate fixing the entire terminal box in the target position.

[0020] To achieve excellent waterproof sealing, a ring-shaped waterproof groove 104 is formed inside the waterproof box 1 near the edge of the top opening. Matching this, a raised waterproof strip 1021 is fixedly connected to the bottom edge of the waterproof cover 102. When the waterproof cover 102 is closed, this waterproof strip 1021 can be precisely inserted into the waterproof groove 104 of the waterproof box 1, forming an effective sealing barrier.

[0021] The waterproof cover plate 102 is fixed by bolts 103. Threaded posts 105 with internal threads are fixed at appropriate positions around the inside of the waterproof box 1. After the bolts 103 pass through the corresponding through holes on the waterproof cover plate 102, they are screwed into these threaded posts 105, thereby pressing the waterproof cover plate 102 tightly onto the waterproof box 1. During the bolt tightening process, the waterproof strip 1021 is further pressed into the waterproof groove 104, enhancing the tightness of the seal.

[0022] The waterproof terminal assembly 2 is a key part for the introduction and initial sealing of external cables. Its core includes a mounting threaded seat 201, a waterproof rubber ring 202, and a nut 203. The mounting threaded seat 201 is firmly connected to the pre-set hole in the side wall of the waterproof box 1 through its external thread structure or other fixing methods.

[0023] The waterproof rubber ring 202 is designed as a boss, with its large-diameter bottom portion engaging in the internal cavity of the mounting thread seat 201, while the small-diameter top protrusion extends to the outside of the mounting thread seat 201. At the axial center of the waterproof rubber ring 202, a through hole for passing a wire is provided. The wall of this through hole is designed with an intermittent groove 2021. This intermittent groove structure gives the waterproof rubber ring 202 a certain degree of elasticity and compression space in the radial direction.

[0024] The nut 203 has internal threads that can be screwed into the external threads of the mounting threaded seat 201. On the side of the nut 203 facing the waterproof rubber ring 202, an annular anti-loosening ring 2031 is fixedly connected. The inner diameter of the anti-loosening ring 2031 is designed to be smaller than the outer diameter of the intermittent groove 2021 area on the waterproof rubber ring 202 in its natural state.

[0025] The wiring assembly 3 is responsible for connecting and fixing the internal wires. It mainly consists of a junction box 301 and two sets of anti-loosening units symmetrically arranged on both sides. The junction box 301 serves as the main body for the convergence and connection of the wires and is fixed inside the waterproof box 1.

[0026] Each anti-loosening unit includes a mounting base 302 fixedly connected to the side of the junction box 301. A first arc-shaped clamping block 303 is fixed on the top of the mounting base 302. At least two guide rods 304 are vertically fixed on both sides of the top of the mounting base 302. A second arc-shaped clamping block 306 is slidably sleeved on the two guide rods 304 through corresponding holes, so that the second arc-shaped clamping block 306 can slide up and down along the guide rods 304. The second arc-shaped clamping block 306 and the first arc-shaped clamping block 303 are arranged opposite to each other, and the two together form an openable clamping opening. A spring 305 is fitted on each guide rod 304. One end of the spring 305 acts on the mounting base 302 or the first arc-shaped clamping block 303, and the other end acts on the second arc-shaped clamping block 306, providing the second arc-shaped clamping block 306 with a continuous clamping force toward the first arc-shaped clamping block 303.

[0027] Working principle: When the external cable passes through the loosened nut 203 and the center hole of the waterproof rubber ring 202, and the nut 203 is tightened, the anti-loosening ring 2031 will first contact and squeeze the protrusion of the waterproof rubber ring 202. Since the inner diameter of the anti-loosening ring 2031 is small, it will apply radial extrusion force to the waterproof rubber ring 202 with the intermittent groove 2021, causing it to undergo elastic deformation, thereby tightly wrapping the cable sheath passing through it, forming a reliable radial seal, and effectively preventing the nut from loosening due to vibration.

[0028] When a wire needs to be connected, the second arc-shaped clamping block 306 is pulled outward to overcome the spring force and the end of the wire is placed into the arc-shaped groove of the first arc-shaped clamping block 303. Then the second arc-shaped clamping block 306 is released. Under the reset action of the spring 305, the second arc-shaped clamping block 306 and the first arc-shaped clamping block 303 will clamp the wire together to provide a stable and non-loose electrical connection.

[0029] The 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. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A waterproof and sealed metal terminal, characterized in that, include: Waterproof box (1), waterproof terminal assembly (2) and wiring assembly (3), the waterproof terminal assembly (2) is fixedly connected to one side of the waterproof box (1), the wiring assembly (3) is fixedly connected to the inside of the waterproof box (1), and the waterproof terminal assembly (2) and wiring assembly (3) are on the same horizontal line. The top of the waterproof box (1) is detachably connected to a waterproof cover plate (102). The waterproof terminal assembly (2) includes a mounting threaded seat (201) and a nut (203). A waterproof rubber ring (202) is slidably connected inside the mounting threaded seat (201). An intermittent groove (2021) is provided axially on the waterproof rubber ring (202). An anti-loosening ring (2031) is fixedly connected to one side of the nut (203). The diameter of the inner ring of the anti-loosening ring (2031) is smaller than the diameter of the outer ring of the intermittent groove (2021).

2. The waterproof and sealed metal terminal according to claim 1, characterized in that, The wiring assembly (3) includes a junction box (301) and two sets of anti-loosening units. The two sets of anti-loosening units are symmetrically connected on both sides of the junction box (301). Each set of anti-loosening units includes a mounting base (302). The mounting base (302) is fixedly connected to one side of the junction box (301). A first arc-shaped clamping block (303) is fixedly connected to the top of the mounting base (302). Guide rods (304) are fixedly connected to both sides of the top of the mounting base (302). A spring (305) is sleeved on the guide rod (304). A second arc-shaped clamping block (306) is slidably connected to the guide rod (304).

3. The waterproof and sealed metal terminal according to claim 1, characterized in that, A waterproof strip (1021) is fixedly connected to the bottom of the waterproof cover plate (102), and a waterproof groove (104) is provided inside the waterproof box (1) for the waterproof strip (1021) to be inserted.

4. A waterproof and sealed metal terminal according to claim 1, characterized in that, The waterproof box (1) is fixedly connected to the four sides of the interior by threaded columns (105), and the waterproof cover plate (102) is provided with bolts (103), which are threadedly connected to the threaded columns (105).

5. A waterproof and sealed metal terminal according to claim 1, characterized in that, The waterproof rubber ring (202) is in the shape of a boss, and its bottom is engaged inside the mounting thread seat (201), while its protrusion is engaged outside the mounting thread seat (201).

6. A waterproof and sealed metal terminal according to claim 1, characterized in that, The waterproof terminal assembly (2) is fixedly connected to one side of the waterproof box (1) by a mounting threaded seat (201).

7. A waterproof and sealed metal terminal according to claim 2, characterized in that, The spring (305) is configured to provide clamping force to the second arc-shaped clamping block (306).

8. A waterproof and sealed metal terminal according to claim 1, characterized in that, The waterproof box (1) is fixedly connected to mounting feet (101) around its bottom, and mounting holes are provided inside.

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