A waterproof terminal assembly

Abstract

This application relates to the field of terminal block technology and discloses a waterproof terminal block assembly, including a terminal block body and a protective component. The terminal block body includes a terminal head and a crimping tube, with the open end of the crimping tube forming a flared section. The protective component includes a sleeve that fits over the crimping tube and abuts against the outer wall of the flared section. A deformation element and a rotating element are provided at the outer end of the sleeve. A washer is fitted over the wire inside the deformation element. The rotating element is threaded onto the deformation element to drive the deformation element to grip the washer. A sealing element that mates with the washer is provided inside the rotating element. The protective component secures the wire connected to the terminal block body, effectively preventing movement of the wire core crimped by the crimping tube when the wire is pulled. Simultaneously, it seals the gap between the rotating element and the wire, effectively preventing moisture from entering the crimping tube through this gap, thereby improving the waterproof performance of the terminal block assembly.

Description

Technical Field

[0001] This application relates to the field of terminal block technology, and more specifically, to a waterproof terminal block assembly. Background Technology

[0002] Copper terminal blocks are commonly used connectors in electrical installations and wiring connections, primarily to ensure the reliability and ease of wire connections. Copper terminal blocks are typically made of pure copper or copper alloys, possessing good conductivity, corrosion resistance, and mechanical strength.

[0003] In practical use, existing copper terminal blocks are connected by stripping the insulation of the wire to expose a section of the conductor. The exposed conductor is then inserted into the copper terminal block, and crimping tools are used to press the terminal block onto the conductor. To prevent moisture from entering the terminal block through the opening and causing corrosion and short circuits, waterproofing is achieved by filling the terminal block with waterproof adhesive and wrapping waterproof tape between the terminal block and the wire. However, in actual use, pulling or other stresses can cause the conductor at the crimped point to shift, creating gaps in the waterproofing structure and resulting in insufficient waterproofing. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this application is to provide a waterproof terminal block assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A waterproof terminal block assembly includes a terminal block body and a protective assembly sleeved on the terminal block body. The terminal block body includes an integrally formed terminal head and a crimping tube, and the open end of the crimping tube forms a flared section for the insertion of a power supply line.

[0007] The protective assembly includes a sleeve that fits over the wire conduit and abuts against the outer wall of the flared section. The outer end of the sleeve is provided with a deformable part and a rotating part that fit over the wire. The wire is covered with a gasket located inside the deformable part. The rotating part is threadedly connected to the deformable part to drive the deformable part to grip the gasket. The rotating part is provided with a sealing part that cooperates with the gasket to seal the gap between the rotating part and the wire.

[0008] Furthermore, the outer side of the pressure tube and near the flared section is provided with an external thread section, and the sleeve is provided with an internal thread section that is threadedly engaged with the external thread section.

[0009] Furthermore, the sleeve is also provided with a first extrusion surface that mates with the outer side of the flared section, and a sealing gasket is provided between the outer side of the flared section and the first extrusion surface.

[0010] Furthermore, the deformable part includes an external thread portion integrally formed on the outer end face of the sleeve and a deformable part connected to the external thread portion. The outer side of the deformable part is provided with an inclined surface, and a gap groove is provided on the inclined surface along its circumference.

[0011] The rotating component includes a rotating cylinder, which has an internal thread that is threaded to the external thread and a second extrusion surface that mates with the inclined surface. When the internal thread is threaded to the external thread, the second extrusion surface extrudes the inclined surface to make the deformed part hold the washer ring tightly.

[0012] Furthermore, the end of the washer away from the sleeve protrudes outward along its circumference to form a convex ring portion, which blocks the outer end of the deformed part. A first guide surface is provided along its circumference on the end face of the convex ring portion away from the sleeve, and a second guide surface that cooperates with the first guide surface is provided along its circumference on the inner end face of the rotating cylinder.

[0013] The sealing element includes an expansion sleeve disposed between the first guide surface and the second guide surface and sleeved around the wire. When the rotating cylinder is threadedly connected to the deformable part, it drives the first guide surface to move toward the second guide surface to compress and tighten the expansion sleeve.

[0014] Furthermore, the outer surface of the sleeve is provided with first friction grooves.

[0015] Furthermore, a second friction pattern is provided on the outer surface of the rotating cylinder.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] In this application, by threading the sleeve onto the outside of the crimping tube and threading the rotating part onto the deforming part, the deforming part deforms and tightens the washer, causing the washer to tighten the insulation sheath of the wire, thereby fixing the wire and better preventing the wire core crimped by the crimping tube from moving when the wire is pulled. At the same time, when the rotating part is threaded onto the deforming part to tighten the wire, the sealing part can seal the gap between the rotating part and the wire, better preventing moisture from entering the crimping tube through the gap between the two, thereby improving the waterproof effect of the terminal assembly. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a waterproof terminal block assembly according to this application.

[0019] Figure 2 This is a cross-sectional schematic diagram of a waterproof terminal block assembly according to this application.

[0020] Figure 3This is an exploded structural diagram of a waterproof terminal block assembly according to this application.

[0021] Figure 4 This is a half-sectional structural diagram of the sleeve in this application.

[0022] Figure 5 This is a schematic diagram of the structure of the terminal block body in this application.

[0023] Figure 6 This is a schematic diagram of the structure between the rotating cylinder, the expansion sleeve, and the gasket ring in this application.

[0024] The meanings of the labels in the diagram are as follows:

[0025] 100. Terminal block body; 110. Protective assembly; 111. Sleeve; 112. Rotating component; 120. Wire; 201. Wire core; 202. Insulating sheath; 210. Washer ring; 220. Expansion sleeve; 310. Terminal head; 320. Crimping tube; 321. Flared section; 322. External thread section; 330. External thread part; 340. Deformation part; 350. Rotating cylinder; 401. Internal thread section; 402. First pressing surface; 601. Internal thread part; 602. Second pressing surface; 603. Second guide surface; 610. Raised ring part; 611. First guide surface. Detailed Implementation

[0026] To further understand the content of this application, a detailed description of this application will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not intended to limit the scope of this application.

[0027] The following is in conjunction with the appendix Figures 1-6 This embodiment will be described in further detail.

[0028] like Figure 1 As shown, a waterproof terminal block assembly in this embodiment includes a terminal block body 100 and a protective component 110 sleeved on the terminal block body 100, wherein, combined with Figure 5 As shown, the terminal block body 100 includes a terminal head 310 and a crimping tube 320 integrally formed by die casting. The terminal head 310 has a mounting hole. The open end of the crimping tube 320 is formed by stamping into a flared section 321 for the power supply wire 120 to extend into. The flared section 321 is stepped and tubular. During crimping between the terminal block body 100 and the wire 120, as... Figure 2 As shown, firstly, the insulation sheath 202 of one end of the wire 120 is stripped to expose a section of the wire core 201. Then, the wire 120 is inserted into the crimping tube 320 through the flared section 321 until the insulation sheath 202 abuts against the inner wall of the flared section 321 and the wire core 201 extends into the crimping tube 320. At this time, the crimping tube 320 is squeezed by tools such as crimping pliers so that the crimping tube 320 crimps the wire core 201.

[0029] Combination Figures 3-6 As shown, in this embodiment, the protective component 110 includes a sleeve 111 that fits over the crimping tube 320 and abuts against the outer wall of the flared section 321. Specifically, in order to achieve the fixed installation of the sleeve 111 outside the crimping tube 320, an external thread section 322 is provided on the outer side of the crimping tube 320 near the flared section 321. The outer surface of the external thread section 322 is provided with an external thread. The sleeve 111 is provided with an internal thread section 401 that is threadedly engaged with the external thread section 322. The surface of the internal thread section 401 is provided with an internal thread. Thus, by utilizing the engagement of the internal and external threads, the sleeve 111 is inserted into the crimping tube 320 from the terminal head 310, and then the sleeve 111 is rotated so that the internal thread section 401 is threadedly connected to the external thread section 322, thereby achieving the fixed installation of the sleeve 111 outside the crimping tube 320.

[0030] In actual use, to prevent water leakage at the connection between the sleeve 111 and the pressure tube 320, in this embodiment, the sleeve 111 is also provided with a first extrusion surface 402 that cooperates with the outer side of the flared section 321. The first extrusion surface 402 is frustum-shaped and is used to cooperate with the frustum-shaped outer side of the flared section 321. A sealing gasket is provided between the outer side of the flared section 321 and the first extrusion surface 402. In this way, when the sleeve 111 is rotated to make the internal thread section 401 threadedly connected to the external thread section 322, the first extrusion surface 402 can be brought close to the outer side of the flared section 321, thereby extruding the sealing gasket between the two and ensuring the sealing performance at the connection between the sleeve 111 and the pressure tube 320.

[0031] Specifically, the sealing gasket is made of rubber material to improve the sealing effect; in order to facilitate the user to rotate the sleeve 111, the outer side of the sleeve 111 is provided with first friction texture, which increases the friction force so that the user can rotate the sleeve 111.

[0032] In this embodiment, the outer end of the sleeve 111 is provided with a deformable member and a rotating member 112 that are sleeved on the wire 120. The wire 120 is sleeved with a gasket 210 located inside the deformable member. The rotating member 112 is threadedly connected to the deformable member to drive the deformable member to grip the gasket 210. The rotating member 112 is provided with a sealing member that cooperates with the gasket 210 to seal the gap between the rotating member 112 and the wire 120.

[0033] In this embodiment, the sleeve 111, the deforming component, and the rotating component 112 are all made of plastic. Through this structure, in actual use, since the sleeve 111 is threaded onto the crimping tube 320, when the sleeve 111 is held and fixed, and the rotating component 112 is threaded onto the deforming component, the deforming component can grip the washer ring 210, causing the washer ring 210 to grip the insulation sheath 202 of the wire 120. This secures the wire 120 and effectively prevents the wire core 201 crimped by the crimping tube 320 from moving when the wire 120 is pulled. Simultaneously, the sealing element, when the rotating component 112 is threaded onto the deforming component to grip the wire 120, seals the gap between the rotating component 112 and the wire 120, effectively preventing moisture from entering the crimping tube 320 through this gap, thus improving the waterproofing effect.

[0034] The washer 210 is made of plastic and deforms under the clamping force of the deformable part to clamp the insulating outer sheath 202 of the wire 120, so as to fix the wire 120.

[0035] In this embodiment, the deformable part includes an external threaded portion 330 integrally formed on the outer end face of the sleeve 111 and a deformable portion 340 connected to the external threaded portion 330. The external threaded portion 330 and the deformable portion 340 are arranged circumferentially along the sleeve 111 and are both sleeved on the outside of the wire 120. The outer side of the deformable portion 340 is provided with a slope so that the outer side of the deformable portion 340 is in the shape of a frustum. A gap groove is provided on the slope along its circumference. The gap groove can facilitate the deformation and clamping of the deformable portion 340.

[0036] The rotating component 112 includes a rotating cylinder 350. The rotating cylinder 350 is provided with an internal threaded part 601 that is threadedly connected to the external threaded part 330 and a second pressing surface 602 that cooperates with the inclined surface. When the internal threaded part 601 is threadedly connected to the external threaded part 330, the second pressing surface 602 presses the inclined surface to make the deformable part 340 hug the washer ring 210.

[0037] In this embodiment, the rotating part 112 is also made of plastic. The outer surface of the external threaded part 330 is provided with an external thread, and the surface of the internal threaded part 601 is provided with an internal thread. By utilizing the cooperation of the external thread and the internal thread, when the rotating cylinder 350 is rotated, it can move along the wire 120 to the sleeve 111, thereby driving the second pressing surface 602 to press the inclined surface to deform the deformable part 340, so that it hugs the washer ring 210, and the washer ring 210 is pressed to hug the insulating outer sheath 202 of the wire 120, so that the wire 120 is hugged and fixed.

[0038] In actual use, in order to facilitate the user to rotate the rotating cylinder 350, a second friction texture is provided on the outer side of the rotating cylinder 350. The second friction texture increases the friction force so that the user can rotate the rotating cylinder 350.

[0039] Specifically, in order to improve the sealing performance at the connection between the rotating cylinder 350 and the external threaded portion 330, in this embodiment, a sealing ring is fitted at the connection between the external threaded portion 330 and the sleeve 111. When the rotating cylinder 350 is connected to the external threaded portion 330, the end of the rotating cylinder 350 is squeezed to compress the sealing ring, thereby improving the sealing effect between the two.

[0040] In this embodiment, the end of the washer 210 away from the sleeve 111 protrudes outward along its circumference to form a convex ring portion 610. The convex ring portion 610 blocks the outer end of the deformable portion 340. A first guide surface 611 is provided along its circumference on the end face of the convex ring portion 610 away from the sleeve 111. A second guide surface 603 that cooperates with the first guide surface 611 is provided along its circumference on the inner end face of the rotating cylinder 350.

[0041] The sealing element includes an expansion sleeve 220 disposed between the first guide surface 611 and the second guide surface 603 and sleeved around the wire 120. When the rotating cylinder 350 is threadedly connected to the deformable part, it drives the first guide surface 611 to move toward the second guide surface 603 to compress the expansion sleeve 220 and tighten it.

[0042] In actual use, when the washer 210 is fitted over the wire 120 inside the deformable part, the end of the washer 210 near the sleeve 111 can abut against the outer end of the flared section 321, thereby restricting the washer 210. When the user rotates the rotating cylinder 350 toward the sleeve 111, the second guide surface 603 at the outer end of the rotating cylinder 350 can move toward the washer 210, thereby squeezing the expansion sleeve 220 between the first guide surface 611 and the second guide surface 603, causing it to deform and expand tightly onto the first guide surface 611, the second guide surface 603 and the insulating outer sheath 202 of the wire 120, thereby sealing the gap between the outer end of the rotating cylinder 350 and the wire 120, thus improving the waterproof effect.

[0043] In practical use, the sleeve 111 is first threaded onto the external thread section 322 of the wire clamping tube 320. Then, the insulation sheath 202 of the wire 120 is stripped to expose a section of the wire core 201. Next, the rotating cylinder 350, the expansion sleeve 220, and the washer 210 are sequentially placed over the wire 120. Then, the end of the wire 120 with the exposed wire core 201 is inserted into the wire clamping tube 320 through the flared section 321. Using wire clamping pliers or other tools, the wire clamping tube 320 is squeezed to avoid the external thread section 322 so that the wire clamping tube 320 presses the wire core 201. Finally, the rotating cylinder 350 is rotated to connect to the external thread section 330 so that the deformable part 340 hugs the washer 210 and the wire 120 to fix the wire 120. At the same time, the expansion sleeve 220 is squeezed to seal the gap between the outer end of the rotating cylinder 350 and the wire 120 to achieve waterproofing.

[0044] In summary, the above description is only a preferred embodiment of this application. All equivalent changes and modifications made within the scope of this application should be covered by this application.

Claims

1. A waterproof terminal block assembly, comprising a terminal block body (100) and a protective assembly (110) sleeved on the terminal block body (100), characterized in that: The terminal block body (100) includes an integrally formed terminal head (310) and a crimp tube (320), the open end of which forms a flared section (321) for the power supply line (120) to extend into. The protective assembly (110) includes a sleeve (111) that is fitted over the wire conduit (320) and abuts against the outer wall of the flared section (321). The outer end of the sleeve (111) is provided with a deformable part and a rotating part (112) that are fitted over the wire (120). The wire (120) is covered with a gasket (210) located inside the deformable part. The rotating part (112) is threaded to the deformable part for driving the deformable part to grip the gasket (210). The rotating part (112) is provided with a sealing element that cooperates with the gasket (210) to seal the gap between the rotating part (112) and the wire (120).

2. The waterproof terminal block assembly according to claim 1, characterized in that: The outer side of the pressure tube (320) and near the flared section (321) is provided with an external thread section (322), and the sleeve (111) is provided with an internal thread section (401) that is threaded to the external thread section (322).

3. A waterproof terminal block assembly according to claim 2, characterized in that: The sleeve (111) is also provided with a first extrusion surface (402) that mates with the outer side of the flared section (321), and a sealing gasket is provided between the outer side of the flared section (321) and the first extrusion surface (402).

4. A waterproof terminal block assembly according to claim 1, characterized in that: The deformable part includes an external threaded part (330) integrally formed on the outer end face of the sleeve (111) and a deformable part (340) connected to the external threaded part (330). The outer side of the deformable part (340) is provided with an inclined surface, and a gap groove is provided on the inclined surface along its circumference. The rotating component (112) includes a rotating cylinder (350). The rotating cylinder (350) is provided with an internal thread (601) that is threadedly connected to the external thread (330) and a second pressing surface (602) that cooperates with the inclined surface. When the internal thread (601) is threadedly connected to the external thread (330), the second pressing surface (602) presses the inclined surface to make the deformable part (340) hold the washer (210).

5. A waterproof terminal block assembly according to claim 4, characterized in that: The end of the washer (210) away from the sleeve (111) protrudes outward along its circumference to form a convex ring (610). The convex ring (610) blocks the outer end of the deformable part (340). A first guide surface (611) is provided along its circumference on the end face of the convex ring (610) away from the sleeve (111). A second guide surface (603) that cooperates with the first guide surface (611) is provided along its circumference on the inner end face of the rotating cylinder (350). The sealing element includes an expansion sleeve (220) disposed between the first guide surface (611) and the second guide surface (603) and sleeved outside the wire (120). When the rotating cylinder (350) is threadedly connected to the deformable part, it drives the first guide surface (611) to move towards the second guide surface (603) to compress the expansion sleeve (220) and tighten it.

6. A waterproof terminal block assembly according to claim 1, characterized in that: The outer surface of the sleeve (111) is provided with the first friction pattern.

7. A waterproof terminal block assembly according to claim 4, characterized in that: The outer surface of the rotating cylinder (350) is provided with a second friction pattern.

Images