Waterproof structure of terminal

Abstract

This invention relates to a waterproof structure for terminal blocks, belonging to the field of terminal block technology. It addresses the problems of complex waterproof structures, inconvenient installation and disassembly, and poor waterproofing performance in existing terminal block waterproofing technologies. A sealing sleeve is detachably mounted inside the wiring hole of the terminal block body, a clamping ring is detachably mounted on the lip of the sealing sleeve, and a waterproof cap is detachably mounted on the clamping ring. This invention mainly consists of a sealing sleeve, a clamping ring, and a waterproof cap, featuring a simple structure that is easy to manufacture and install. Installation and disassembly are convenient, facilitating maintenance and replacement. It provides excellent waterproofing performance through the interference fit between the sealing sleeve and the terminal block body and the wire, the sealing fit between the waterproof cap and the clamping ring, and the use of sealing rings and gaskets, achieving multi-layered waterproof sealing and effectively preventing moisture from entering the terminal block. It also features an emergency drainage function; an emergency drainage hole is provided on the lower end face of the waterproof cap, allowing for timely drainage in case of accumulated water, further improving waterproofing performance.

Description

Technical Field

[0001] This utility model belongs to the field of terminal block technology, and in particular relates to a waterproof structure for a terminal block. Background Technology

[0002] Terminal blocks, as crucial components in electrical connections, are widely used in various electrical equipment. In practical applications, terminal blocks may operate in harsh environments, such as those exposed to rain and humid air. This can easily allow moisture to enter the terminal blocks, causing short circuits, leakage, and other safety hazards, thus affecting the normal operation of electrical equipment. Existing waterproof terminal block structures are mostly complex, inconvenient to install and disassemble, and their waterproofing effect is insufficient, failing to meet the requirements of some special environments. Therefore, a simple, easy-to-install, and effective waterproof terminal block structure is needed. Utility Model Content

[0003] The purpose of this utility model is to provide a waterproof structure for wiring terminals, so as to solve the problems of complex waterproof structures, inconvenient installation and disassembly, and poor waterproof effect of existing wiring terminals.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a waterproof structure for a terminal block, comprising a sealing sleeve, a clamping ring, and a waterproof cap, wherein the sealing sleeve is detachably disposed within the wiring hole of the terminal block body, the clamping ring is detachably disposed on the lip of the sealing sleeve, and the waterproof cap is detachably disposed on the clamping ring.

[0005] Furthermore, the outer wall of the lip of the sealing sleeve is provided with a mounting groove along the circumference, the clamping ring is detachably disposed in the mounting groove, and the wire is disposed in the wiring hole of the terminal body and is interference-fitted with the inner wall of the sealing sleeve.

[0006] Furthermore, the clamping ring is provided with a plurality of positioning holes circumferentially through it. In use, one end face of the clamping ring is sealed and fitted with the outer wall of the terminal body, and the other end face of the clamping ring is sealed and fitted with the waterproof cap.

[0007] Furthermore, the waterproof cap has a wire inlet hole in the center of the top, and a sealing ring is installed inside the wire inlet hole. The wire passes through the wire inlet hole and enters the waterproof cap and the sealing sleeve in sequence. The wire is interference-fitted with the inner side wall of the sealing ring. An emergency drainage hole is opened on the lower end face of the waterproof cap. A plug is installed in the emergency drainage hole. When not in use, the plug blocks the emergency drainage hole, so that a sealed waterproof cavity is formed inside the waterproof cap. When in use, the plug is pulled out to drain the water accumulated in the waterproof cap. Multiple positioning holes II are arranged circumferentially on the brim of the waterproof cap. Each positioning hole II is equipped with a positioning bolt. The multiple positioning holes II on the brim are arranged one-to-one with the multiple positioning holes I on the clamping ring and the multiple positioning holes on the terminal body. The positioning bolt passes through the positioning holes II and I in sequence and enters into the positioning hole on the terminal body. The waterproof cap and the clamping ring are detachably and fixedly connected to the terminal body through the multiple positioning bolts.

[0008] Furthermore, a sealing gasket is provided on the contact surface between the brim of the waterproof cap and the compression ring.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. This utility model has a simple structure. The waterproof structure is mainly composed of a sealing sleeve, a compression ring, and a waterproof cap. It is simple in structure and easy to manufacture and install.

[0011] 2. This utility model is easy to install and disassemble. The components are connected in a detachable manner and fixed by positioning bolts, which facilitates installation and disassembly, and makes maintenance and replacement convenient.

[0012] 3. This utility model has a good waterproof effect. Through the interference fit between the sealing sleeve and the terminal body and the wire, the sealing fit between the waterproof cap and the compression ring, and the setting of the sealing ring and sealing gasket, a multi-layer waterproof seal is achieved, which effectively prevents moisture from entering the inside of the terminal.

[0013] 4. This utility model has an emergency drainage function. An emergency drainage hole is provided on the lower end face of the waterproof cap, which can drain water in time when there is water accumulation, further improving the waterproof performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the sealing sleeve.

[0016] Figure 3 This is a schematic diagram of the clamping ring structure;

[0017] Figure 4 This is a structural diagram of a waterproof cap;

[0018] Figure 5 This is a cross-sectional view of the present invention. Figure 1 ;

[0019] Figure 6 This is a cross-sectional view of the present invention. Figure 2 ;

[0020] Figure 7 This is a schematic diagram of the usage state of this utility model. Figure 1 ;

[0021] Figure 8 This is a schematic diagram of the usage state of this utility model. Figure 2 ;

[0022] Figure 9 This is a cross-sectional view of the utility model in use.

[0023] The component names and reference numerals in the above figures are as follows:

[0024] 1. Sealing sleeve; 2. Compression ring; 3. Waterproof cap; 4. Positioning bolt; 5. Mounting groove; 6. Lip; 7. Positioning hole one; 8. Cable inlet hole; 9. Emergency drain hole; 10. Positioning hole two; 11. Sealing gasket; 12. Plug; 13. Terminal block body. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0026] Detailed implementation methods: such as Figures 1-9 As shown, this embodiment discloses a waterproof structure for a terminal block, including a sealing sleeve 1, a clamping ring 2, and a waterproof cap 3. The sealing sleeve 1 is detachably disposed in the wiring hole of the terminal block body 13, the clamping ring 2 is detachably disposed on the lip 6 of the sealing sleeve 1, and the waterproof cap 3 is detachably disposed on the clamping ring 2.

[0027] Furthermore, the outer wall of the lip 6 of the sealing sleeve 1 is provided with a mounting groove 5 along the circumference, the clamping ring 2 is detachably disposed in the mounting groove 5, and the wire is disposed in the wiring hole of the terminal body 13 and is press-fitted with the inner wall of the sealing sleeve 1.

[0028] Furthermore, the clamping ring 2 is provided with a plurality of positioning holes 7 circumferentially through it. In use, one end face of the clamping ring 2 is sealed and fitted with the outer wall of the terminal body 13, and the other end face of the clamping ring 2 is sealed and fitted with the waterproof cap 3.

[0029] Furthermore, the waterproof cap 3 has a wire inlet hole 8 in the center of the top, and a sealing ring is provided inside the wire inlet hole 8. The wire passes through the wire inlet hole 8 and enters the waterproof cap 3 and the sealing sleeve 1 in sequence. The wire is press-fitted with the inner side wall of the sealing ring. An emergency drainage hole 9 is provided on the lower end face of the waterproof cap 3. A plug 12 is provided inside the emergency drainage hole 9. When not in use, the plug 12 blocks the emergency drainage hole 9, so that a sealed waterproof cavity is formed inside the waterproof cap 3. When in use, the plug 12 is pulled out to drain the water accumulated in the waterproof cap 3. Multiple positioning holes 10 are provided circumferentially on the brim of the waterproof cap 3. Each positioning hole 10 is provided with a positioning bolt 4. The multiple positioning holes 10 on the brim are corresponding to the multiple positioning holes 7 on the clamping ring 2 and the multiple positioning holes on the terminal body 13. The positioning bolt 4 passes through the positioning holes 10 and 7 in sequence and enters the positioning hole on the terminal body 13. The waterproof cap 3 and the clamping ring 2 are detachably and fixedly connected to the terminal body 13 through the multiple positioning bolts 4.

[0030] Furthermore, a sealing gasket 11 is provided on the contact surface between the brim of the waterproof cap 3 and the compression ring 2.

[0031] Sealing sleeve 1: Sealing sleeve 1 is made of silicone rubber, which has good elasticity and sealing performance. It is cylindrical in shape, with a lip 6 at one end. The outer wall of the lip 6 has a mounting groove 5 along its circumference for mounting the clamping ring 2. The inner diameter of sealing sleeve 1 is slightly smaller than the outer diameter of the wire to allow for an interference fit.

[0032] Compression ring 2: Compression ring 2 is made of stainless steel, which has high strength and stability. It is ring-shaped, with multiple positioning holes 7 running through the upper circumference for connecting to the waterproof cap 3 and the terminal body 13 via positioning bolts 4.

[0033] Waterproof cap 3: The waterproof cap 3 is made of polycarbonate material, which has good weather resistance and waterproof performance. A wire inlet hole 8 is opened in the center of the cap top, and a nitrile rubber sealing ring is installed inside the wire inlet hole 8. An emergency drainage hole 9 is opened on the lower end face of the waterproof cap 3, and a natural rubber plug 12 is installed inside the emergency drainage hole 9. Multiple positioning holes 10 are circumferentially arranged along the brim, and a positioning bolt 4 is installed in each positioning hole 10. A EPDM rubber sealing gasket 11 is provided on the contact surface between the brim and the clamping ring 2.

[0034] Positioning bolt 4: Positioning bolt 4 can be made of metal, such as copper or stainless steel, and is used to detachably and securely connect the waterproof cap 3 and the clamping ring 2 to the terminal body 13.

[0035] Terminal body 13: The terminal body 13 is a conventional terminal structure in the prior art, which has multiple positioning holes for connecting with the clamping ring 2 and the waterproof cap 3.

[0036] Installation process:

[0037] Insert the sealing sleeve 1 into the wiring hole of the terminal body 13, ensuring that the sealing sleeve 1 fits tightly against the inner wall of the wiring hole.

[0038] The wire is passed through the inlet hole 8 of the waterproof cap 3 and the sealing sleeve 1, so that the wire is interference-fitted with the inner wall of the sealing sleeve 1, and at the same time, the wire is interference-fitted with the sealing ring in the inlet hole 8.

[0039] Place the clamping ring 2 onto the lip 6 of the sealing sleeve 1 and insert it into the mounting groove 5 on the outer wall of the lip 6 to ensure that one end face of the clamping ring 2 is sealed and fitted to the outer wall of the terminal body 13.

[0040] Place the waterproof cap 3 over the clamping ring 2, ensuring that the brim of the waterproof cap 3 fits snugly against the contact surface of the clamping ring 2, and that the sealing gasket 11 provides a seal. Simultaneously, ensure that the multiple positioning holes 10 on the brim correspond one-to-one with the multiple positioning holes 7 on the clamping ring 2 and the multiple positioning holes on the terminal block body 13.

[0041] Pass the positioning bolt 4 through the positioning hole 10 and the positioning hole 7 in sequence and insert it into the positioning hole on the terminal body 13. Then, detachably and fix the waterproof cap 3 and the clamping ring 2 to the terminal body 13.

[0042] Working principle and process:

[0043] Waterproofing principle:

[0044] The sealing sleeve 1 is press-fitted with the inner wall of the wiring hole of the terminal body 13 and with the outer surface of the wire, thus achieving the first layer of waterproof sealing and preventing moisture from entering the inside of the terminal from the wiring hole.

[0045] The clamping ring 2 is inserted into the mounting groove 5 of the lip 6 of the sealing sleeve 1 and is sealed and fitted against the outer wall of the terminal body 13, further enhancing the sealing effect.

[0046] A sealing gasket 11 is provided between the brim of the waterproof cap 3 and the compression ring 2, and the wire and the sealing ring in the inlet hole 8 are interference fit, forming a third layer of waterproof seal, which effectively prevents water from entering from between the waterproof cap 3 and the compression ring 2 and from the inlet hole 8.

[0047] Emergency drainage process:

[0048] Under normal circumstances, blockage 12 blocks the emergency drain hole 9, forming a sealed waterproof cavity inside the waterproof cap 3 to prevent water from entering.

[0049] If water accumulates inside the waterproof cap 3 due to an accident, the plug 12 can be pulled out to drain the water through the emergency drain hole 9. After draining the water, the plug 12 can be used to re-plug the emergency drain hole 9 to restore the sealing and waterproof function of the waterproof cap 3.

[0050] Disassembly process:

[0051] Pull out the positioning bolt 4 to release the waterproof cap 3 and the clamping ring 2 from the fixed connection with the terminal body 13.

[0052] Remove the waterproof cap 3 to expose the clamping ring 2.

[0053] Remove the clamping ring 2 from the lip 6 of the sealing sleeve 1.

[0054] Pull the wire out of the wiring hole of the sealing sleeve 1 and the terminal body 13, and then remove the sealing sleeve 1 to complete the disassembly.

[0055] The waterproof structure of this utility model is easy to install and disassemble, has a simple structure, and has a good waterproof effect. It can solve the problems of complex waterproof structure of wiring terminals, inconvenient installation and disassembly, and poor waterproof effect in the prior art.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water-proof structure of a terminal, characterized by comprising: It includes a sealing sleeve (1), a clamping ring (2) and a waterproof cap (3). The sealing sleeve (1) is detachably installed in the wiring hole of the terminal body (13), the clamping ring (2) is detachably installed on the lip (6) of the sealing sleeve (1), and the waterproof cap (3) is detachably installed on the clamping ring (2).

2. The waterproof structure of a terminal according to claim 1, wherein: The outer wall of the lip (6) of the sealing sleeve (1) is provided with a mounting groove (5) along the circumferential direction. The clamping ring (2) is detachably installed in the mounting groove (5). The wire is installed in the wiring hole of the terminal body (13) and is press-fitted to the inner wall of the sealing sleeve (1).

3. The waterproof structure of a terminal according to claim 2, wherein: The clamping ring (2) has multiple positioning holes (7) running through it circumferentially. When in use, one end face of the clamping ring (2) is sealed and fitted with the outer wall of the terminal body (13), and the other end face of the clamping ring (2) is sealed and fitted with the waterproof cap (3).

4. The waterproof structure of a terminal block according to claim 3, characterized in that: The waterproof cap (3) has an inlet hole (8) in the middle of the top of the cap. A sealing ring is provided inside the inlet hole (8). The wire passes through the inlet hole (8) and enters the waterproof cap (3) and the sealing sleeve (1) in sequence. The wire is press-fitted with the inner wall of the sealing ring. An emergency drainage hole (9) is provided on the lower end face of the waterproof cap (3). A plug (12) is provided inside the emergency drainage hole (9). When not in use, the plug (12) blocks the emergency drainage hole (9), so that a sealed waterproof cavity is formed inside the waterproof cap (3). When in use, the plug (12) is pulled out to drain the water accumulated in the waterproof cap (3). Multiple positioning holes (10) are provided circumferentially on the brim. Each positioning hole (10) is provided with a positioning bolt (4). The multiple positioning holes (10) on the brim correspond one-to-one with the multiple positioning holes (7) on the clamping ring (2) and the multiple positioning holes on the terminal body (13). The positioning bolt (4) passes through the positioning holes (10) and the positioning holes (7) in sequence and enters the positioning hole on the terminal body (13). The waterproof cap (3) and the clamping ring (2) are detachably and fixedly connected to the terminal body (13) through the multiple positioning bolts (4).

5. The waterproof structure of a terminal according to claim 4, wherein: The waterproof cap (3) has a sealing gasket (11) on the contact surface between the brim and the compression ring (2).

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