A waterproof terminal

Abstract

The utility model belongs to waterproof terminal technical field discloses a waterproof terminal, the lower extreme of copper column is provided with the connecting head of wire equipment conductivity connection, the upper extreme of copper column is provided with the wire connecting hole, the plastic nail is provided with the wire threading hole of the wire hole two ends of going through on it, still be provided with the plug connector of extending to the wire connecting hole on the plastic nail, the first wire pressing gap is arranged between the lower end surface of plug connector and the inner bottom surface of wire connecting hole, the second wire pressing gap is arranged between the outer wall of plug connector lower part and the inner wall of wire connecting hole lower part, the first wire pressing gap and the second wire pressing gap cooperate and form the wire pressing section, the middle part or upper part of wire connecting hole is provided with the internal thread, the middle part or upper part of plug connector is the threaded connection section that is provided with the external thread, the threaded connection section is screwed with the internal thread of wire connecting hole, O type sealing ring is pressed between the plastic nail and copper column above threaded connection section. The utility model realizes miniaturization, and the wiring is simple, and the installation is easy.

Description

Technical Field

[0001] This utility model belongs to the field of waterproof terminal technology, and specifically relates to a waterproof terminal. Background Technology

[0002] Most existing waterproof terminals consist of a connector and a waterproof housing. The cable sealing requires a waterproof wire threading connector. This wiring method is bulky and cannot be miniaturized in small devices such as circuit boards. Moreover, the wiring is complicated and the installation time is long, which can no longer meet the requirements of most people. Utility Model Content

[0003] The purpose of this invention is to provide a waterproof terminal to solve the aforementioned problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A waterproof terminal, comprising: The copper column has a connector at its lower end that is electrically connected to the wiring device, and a wire connection hole at its upper end. An insulating protective layer is provided on the outer surface of the copper column above the connector. A plastic nail has wire-passing holes extending through its upper and lower ends to facilitate the insertion of wires into these holes. The plastic nail also has a connector extending into the wire connection hole. A first clamping gap is formed between the lower end face of the connector and the inner bottom surface of the wire connection hole, and a second clamping gap is formed between the lower outer wall of the connector and the lower inner wall of the wire connection hole. The first and second clamping gaps cooperate to form a clamping section, used to press the wire core at the lower end of the wire against the clamping section. The middle or upper part of the wire connection hole has an internal thread, and the middle or upper part of the connector is a threaded connection section with external threads, which is threadedly connected to the internal thread of the wire connection hole. The O-ring is pressed between the plastic pin and the copper post above the threaded connection section.

[0005] As a preferred technical solution of this utility model, the plastic nail has an annular mounting groove, and the O-ring is disposed in the annular mounting groove. The depth of the annular mounting groove is less than the diameter of the longitudinal section of the O-ring.

[0006] As a preferred technical solution of this utility model, the plastic nail also includes a polygonal adjusting head integrally connected to the upper end of the connector, the lower end of the polygonal adjusting head abutting against the upper end of the copper post.

[0007] As a preferred technical solution of this utility model, the O-ring is disposed between the lower end face of the polygonal adjusting head and the upper end face of the copper column.

[0008] As a preferred technical solution of this utility model, the wire connection hole includes a threaded connection hole with the internal thread and a pressure hole below the threaded connection hole. The inner diameter of the pressure hole is smaller than the inner diameter of the threaded connection hole. The connector is also provided with a pressure segment located at the lower end of the threaded connection segment. The outer diameter of the pressure segment is smaller than the outer diameter of the threaded connection segment. The pressure segment and the pressure hole cooperate to form the pressure segment.

[0009] In a preferred embodiment of this invention, the O-ring is located inside the wire connection hole.

[0010] As a preferred technical solution of this utility model, the inner diameter of the wire threading hole gradually decreases from top to bottom.

[0011] As a preferred technical solution of this utility model, a flexible hollow plug is coaxially installed at the upper end of the wire threading hole, and a wire sealing hole is opened at the upper end of the flexible hollow plug, which extends through its upper and lower ends.

[0012] As a preferred technical solution of this utility model, the upper end of the wire threading hole is provided with an outwardly extending annular sealing groove, and a flexible hollow plug is installed in the annular sealing groove, and the flexible hollow plug and the annular sealing groove are interference fit.

[0013] As a preferred technical solution of this utility model, the flexible hollow plug is made of rubber.

[0014] Beneficial effects: During installation, the wire is first passed through the wire hole, then the end of the wire is stripped to expose a suitable length of wire core. The wire core is then bent or coiled along the crimping section of the plastic nail. The plastic nail is then threaded into the wire connection hole of the copper post. Finally, the connector is electrically connected to the wiring device. Installation is quick and convenient. The threaded connection within the wire connection hole via the threaded connection section allows the plastic nail to be stably attached to the copper pillar. This, in turn, securely clamps the wire core at the end of the wire passing through the plastic nail to the crimping section. This "hook" crimping method is less prone to detachment compared to the two-metal-plate clamping method, and it simplifies the structure, making it more suitable for small equipment and confined spaces requiring waterproofing. Unlike aviation plugs, it does not require paired plugs and sockets; any threaded hole or other connection hole capable of stably positioning the connector can be used for installation. The crimping section provides more space for the wire core, reducing the stripping length requirement. Through the cooperation of the O-ring and the plastic nail, only local insulation treatment is needed at the copper pillar to effectively utilize its conductivity while achieving insulation and waterproofing, simplifying the structure. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the waterproof terminal in Example 1; Figure 2This is a front view of the waterproof terminal in Embodiment 1; Figure 3 This is a cross-sectional view of the waterproof terminal in Example 2; Figure 4 This is a front view of the waterproof terminal in Example 2.

[0016] In the diagram: 1-Copper pillar; 101-Connector; 102-Crimping section; 2-Plastic nail; 201-Wire hole; 202-Threaded connection section; 3-O-ring seal; 4-Flexible hollow plug. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model. Example

[0018] like Figure 1 and Figure 2 As shown, this embodiment provides a waterproof terminal, including a copper post 1, a plastic nail 2, and an O-ring 3. The lower end of the copper post 1 is provided with a connector 101 that is electrically connected to the wiring device. The connector 101 can be installed on the wiring device by plugging or by threading, depending on the actual situation, without specific limitations. The upper end of the copper post 1 is provided with a wire connection hole to facilitate the connection of wires in the wire connection hole.

[0019] In order to stably connect the wire to the wire connection hole, this embodiment uses a plastic nail 2. The plastic nail 2 has wire through holes 201 that pass through its upper and lower ends, so that the wire can be passed through the wire through holes 201. When threading the wire, the plastic nail 2 is unscrewed, the wire with the wire sheath is passed through the wire through hole 201, and then the head of the wire is stripped to expose the wire core of a suitable length, so that the wire core at the head of the wire can contact the bottom of the wire connection hole, thereby realizing the circuit conduction.

[0020] Furthermore, the plastic nail 2 is also provided with a connector extending into the wire connection hole. A first wire clamping gap is provided between the lower end face of the connector and the inner bottom face of the wire connection hole, and a second wire clamping gap is provided between the lower outer wall of the connector and the lower inner wall of the wire connection hole. The first wire clamping gap and the second wire clamping gap cooperate to form a wire clamping segment 102, which is used to clamp the wire core at the lower end of the wire to the wire clamping segment 102. In practice, the wire core can be bent or coiled along the wire clamping segment 102 of the connector. After the plastic nail 2 is fixed to the copper post 1, the wire core is clamped by the wire clamping segment 102, thereby completing the circuit conduction. Meanwhile, the outer surface of the copper pillar 1 is insulated, and an insulating protective layer is provided on the outer surface of the copper pillar 1 above the connector 101. More preferably, an insulating protective layer is provided on the upper end face of the copper pillar 1 to prevent the outer surface of the copper pillar 1 from becoming conductive. Moreover, between the plug and the wire connection hole, the middle or upper part of the wire connection hole is provided with an internal thread, and the middle or upper part of the plug is a threaded connection section 202 with an external thread. The threaded connection section 202 is threadedly connected to the internal thread of the wire connection hole, thereby achieving a stable connection of the plastic nail 2 on the copper pillar 1 and ensuring that the wire core at the wire clamping section 102 is clamped.

[0021] To further enhance the sealing and waterproofing effect, in this embodiment, the O-ring 3 is pressed between the plastic nail 2 and the copper post 1 above the threaded connection section 202, thereby preventing water from entering the wire connection hole below the O-ring 3. Preferably, the copper post 1 part at the O-ring 3 is also insulated to achieve a better insulation effect.

[0022] During installation, the wire is first passed through the wire hole 201, then the head of the wire is stripped to expose a suitable length of wire core. The wire core is then bent or coiled along the pressure section 102 of the plastic nail 2. The plastic nail 2 is then threaded into the wire connection hole of the copper post 1. Finally, the connector 101 is electrically connected to the wiring device. The installation is quick and convenient. The threaded connection of the threaded connection section 202 within the wire connection hole allows the plastic nail 2 to be stably connected to the copper pillar 1. This, in turn, ensures that the wire core at the end of the wire passing through the plastic nail 2 is stably clamped at the crimping section 102. This "hook" crimping method is less prone to detachment than the two-metal-plate clamping method, and it simplifies the structure, making it more suitable for small equipment and wiring points in confined spaces requiring waterproofing. Compared to aviation plugs, it does not require paired plugs and sockets; any threaded hole or other connection hole that can stably position the connector 101 can be used for installation and connection. The crimping section 102 provides more space for the wire core, reducing the requirement for wire stripping length. Through the cooperation of the O-ring seal 3 and the plastic nail 2, only local insulation treatment is needed at the copper pillar to make reasonable use of the copper pillar's conductivity while achieving insulation and waterproofing effects, thus simplifying the structure.

[0023] As a preferred embodiment of this invention, it should be further explained that the plastic nail 2 has an annular mounting groove, and the O-ring 3 is disposed in the annular mounting groove. The annular mounting groove limits the position of the O-ring 3, making the positioning and installation of the O-ring 3 easier. The depth of the annular mounting groove is less than the diameter of the longitudinal section of the O-ring 3, so that part of the O-ring 3 extends outside the annular mounting groove. Thus, when the plastic nail 2 is installed in conjunction with the copper pillar 1, the copper pillar 1 can squeeze the part of the O-ring 3 that extends outside the annular mounting groove, thereby filling the gap between the plastic nail 2 and the copper pillar 1 and enhancing the sealing effect.

[0024] As a preferred embodiment of this invention, it should be further explained that the plastic nail 2 also includes a polygonal adjusting head integrally connected to the upper end of the connector, which is similar in shape to a nut. This makes it easy to operate with tools such as wrenches, and thus facilitates the threaded connection of the threaded connection section 202 in the wire connection hole by manipulating the polygonal adjusting head, making the installation of the plastic nail 2 easier. The lower end of the polygonal adjusting head abuts against the upper end of the copper pillar 1 to limit the plastic nail 2 and enhance the sealing performance.

[0025] As a preferred embodiment of this invention, it should be further noted that the O-ring 3 is disposed between the lower end face of the polygonal adjusting head and the upper end face of the copper pillar 1 (e.g., Figure 1 (as shown), or the O-ring 3 is located inside the wire connection hole (as shown). Figure 3 As shown in the figure, both installation methods are simple and convenient, and can further enhance the sealing performance.

[0026] As a preferred embodiment of this invention, it should be further explained that the wire connection hole includes a threaded connection hole with the internal thread and a pressure hole located below the threaded connection hole. The inner diameter of the pressure hole is smaller than the inner diameter of the threaded connection hole. The connector is also provided with a pressure segment located at the lower end of the threaded connection segment 202. The outer diameter of the pressure segment is smaller than the outer diameter of the threaded connection segment 202. The pressure segment and the pressure hole cooperate to form the pressure segment 102, so that when the plastic nail 2 is installed on the copper pillar 1, the internal thread of the wire connection hole will not be damaged.

[0027] As a preferred embodiment of this invention, it should be further explained that the inner diameter of the wire threading hole 201 gradually decreases from top to bottom. Specifically, it can be a conical hole, a stepped hole, or a combination of a conical hole and a stepped hole. By gradually changing the inner diameter of the wire threading hole 201, the sealing between the wire and the plastic nail 2 can be strengthened while facilitating wire installation, thereby improving the waterproof effect. Example

[0028] like Figure 3 and Figure 4 As shown, this embodiment is a further improvement based on Embodiment 1. The specific differences between this embodiment and Embodiment 1 are as follows: As a preferred embodiment, this embodiment further illustrates that a flexible hollow plug 4 is coaxially installed at the upper end of the wire threading hole 201. Preferably, the flexible hollow plug 4 is made of rubber with moderate softness and hardness, which can ensure its stability when installed at the upper end of the wire threading hole 201. The upper end of the flexible hollow plug 4 has a wire sealing hole that runs through its upper and lower ends. In practice, the overall waterproof effect is further enhanced by the flexible hollow plug 4.

[0029] As a preferred embodiment of this work, it should be further explained that the upper end of the wire through hole 201 is provided with an outwardly extending annular sealing groove. The flexible hollow plug 4 is installed in the annular sealing groove, and the flexible hollow plug 4 and the annular sealing groove are interference-fitted, making the installation of the flexible hollow plug 4 easier and ensuring that the flexible hollow plug 4 can be stably installed at the upper end of the wire through hole 201. The design of the annular sealing groove not only enhances the bonding force between the flexible hollow plug 4 and the wire through hole 201, but also further improves the overall sealing performance. When the flexible hollow plug 4 is installed in the annular sealing groove, due to the interference fit between it and the annular sealing groove, moisture or other liquids are difficult to penetrate into this bonding area, thereby effectively preventing moisture from corroding the inside of the wire and the waterproof terminal. This design ensures the waterproof effect while also improving the durability and reliability of the waterproof terminal.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A waterproof terminal, characterized in that, include: A copper column (1) is provided with a connector (101) at the lower end of the copper column (1) that is electrically connected to the wiring device. A wire connection hole is provided at the upper end of the copper column (1). An insulating protective layer is provided on the outer surface of the copper column (1) above the connector (101). A plastic nail (2) has wire-passing holes (201) extending through its upper and lower ends to facilitate the insertion of wires into the wire-passing holes (201); the plastic nail (2) also has a connector extending into the wire connection hole, a first wire-pressing gap is provided between the lower end face of the connector and the inner bottom face of the wire connection hole, and a second wire-pressing gap is provided between the lower outer wall of the connector and the lower inner wall of the wire connection hole, the first wire-pressing gap and the second wire-pressing gap cooperate to form a wire-pressing section (102) to press the wire core at the lower end of the wire into the wire-pressing section (102); the middle or upper part of the wire connection hole is provided with an internal thread, and the middle or upper part of the connector is a threaded connection section (202) with an external thread, the threaded connection section (202) is threadedly connected to the internal thread of the wire connection hole; and O-ring (3) is pressed between the plastic pin (2) and the copper column (1) above the threaded connection section (202).

2. A waterproof terminal according to claim 1, characterized in that, The plastic nail (2) has an annular mounting groove, and the O-ring (3) is placed in the annular mounting groove. The depth of the annular mounting groove is less than the diameter of the longitudinal section of the O-ring (3).

3. A waterproof terminal according to claim 1, characterized in that, The plastic nail (2) also includes a polygonal adjustment head integrally connected to the upper end of the connector, the lower end of the polygonal adjustment head abutting against the upper end of the copper post (1).

4. A waterproof terminal according to claim 3, characterized in that, The O-ring (3) is positioned between the lower end face of the polygonal adjusting head and the upper end face of the copper column (1).

5. A waterproof terminal according to any one of claims 1-4, characterized in that, The O-ring (3) is located inside the wire connection hole.

6. A waterproof terminal according to claim 1, characterized in that, The wire connection hole includes a threaded connection hole with the internal thread and a pressure hole below the threaded connection hole. The inner diameter of the pressure hole is smaller than the inner diameter of the threaded connection hole. The connector is also provided with a pressure segment located at the lower end of the threaded connection segment (202). The outer diameter of the pressure segment is smaller than the outer diameter of the threaded connection segment (202). The pressure segment and the pressure hole cooperate to form the pressure segment (102).

7. A waterproof terminal according to claim 1, characterized in that, The inner diameter of the wire threading hole (201) gradually decreases from top to bottom.

8. A waterproof terminal according to claim 1, 2, 3, 4, 5 or 7, characterized in that, A flexible hollow plug (4) is coaxially installed at the upper end of the wire threading hole (201), and a wire sealing hole is opened at the upper end of the flexible hollow plug (4) that passes through its upper and lower ends.

9. A waterproof terminal according to claim 8, characterized in that, The upper end of the wire threading hole (201) is provided with an outwardly extending annular sealing groove, and a flexible hollow plug (4) is installed in the annular sealing groove, and the flexible hollow plug (4) is interference-fitted with the annular sealing groove.

10. A waterproof terminal according to claim 8, characterized in that, The flexible hollow plug (4) is made of rubber.

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