A cabinet cable sealing joint

Abstract

The present invention belongs to the technical field of cable joints, and specifically relates to a cabinet cable sealing joint, the main structure of which includes an inner sealing ring and an outer sealing ring connected to the inner sealing ring through a threaded tube, including an inner sealing ring, a threaded tube, an outer sealing ring, an interface and a through hole. The inner sealing ring is connected to the outer sealing ring through the threaded tube, the center of the inner sealing ring is provided with an interface, and the center of the outer sealing ring is provided with a through hole. A novel and reasonable double-membrane sealing structure is adopted. The cable is inserted through the interface and comes out from the through hole. Based on the unique self-shrinking characteristics of TPU (thermoplastic polyurethane elastomer) material, the interface and the through hole are tightly fitted on the cable, with double protection levels, ensuring sealing performance and waterproof and dustproof performance. The multi-ring structure of the threaded tube is suitable for cabinet boxes of various thicknesses and can ensure the protection level of the connection with the box; it has a simple structure, is easy to install, and is convenient to thread, which reduces the wiring cost and improves the waterproof and dustproof effect of the cabinet.

Description

Technical field:

[0001] The present invention belongs to the technical field of cable joints, and in particular relates to a cabinet cable sealing joint, which can quickly connect cables and has a double waterproof sealing structure. Background technology:

[0002] Cable glands, also known as cable heads, are used to lock and secure incoming and outgoing cables, providing protection from water, dust, and vibration. They ensure smooth wiring, maintain a tight seal for cables, and guarantee insulation levels at the joint, ensuring safe and reliable operation. Commonly used cabinet cable glands utilize a locking nut with a tapered thread. After securing the gland to the cabinet, loosen the locking nut, thread the cable, and tighten the nut to squeeze the internal sealing ring around the cable sheath, achieving a tight seal. For example, Chinese Patent No. 201280048793.3 discloses a cabinet cable sealing joint having a frame element composed of at least two frame components, wherein the frame element forms an inner cavity defined by the frame component, wherein one or more sealing elements are provided in the inner cavity, wherein the sealing elements have a base body each having a through hole for inserting a cable, wherein the one or more sealing elements are adjacent to the frame component and / or other sealing elements in the inner cavity and are fixed in the frame element by forming a press fit, wherein one or more sealing elements have a conical cable sleeve molded in an extension of the through hole on the base body, wherein the conical cable sleeve has a stepped area with different diameters, and the base body of the sealing element has a third fixing area, wherein the third fixing area is used to fix the base body of the sealing element on the base body of another sealing element adjacent to the sealing element and / or for fixing the base body of the sealing element on the frame component, wherein the third fixing area has a plate molded on the base body and having one or more protrusions. Chinese Patent 202022109557.2 discloses a cabinet cable sealing joint, including a connector body, a middle connector and a clamping nut. The right end of the connector body is threadedly connected to the middle connector, and the right end of the middle connector is threadedly connected to the clamping nut. A sealing ring 2 is provided on the right side of the middle connector, a sealing ring 1 is provided on the right side of the connector body, a reversible armor ring is provided on the right side of the sealing ring 1, a clamping ring is provided on the right side of the reversible armor ring, and a sealing clamping claw is provided on the right side of the sealing ring 2. Chinese patent 201720839348.9 discloses a cabinet cable sealing joint, including a compression nut, a joint body, a sealing ring, a clamping piece, an O-ring, a locking nut, a locking device, a waterproof sleeve and a cable. One end of the compression nut is provided with a joint body, and a waterproof sleeve is provided on the outside of the junction of the compression nut and the joint body. A locking device is provided at the other end of the compression nut. The locking device includes a locking plate and a cross pan head screw provided on the locking plate. A clamping piece is provided on the inner wall of the junction of the compression nut and the joint body, a sealing ring is provided on the inner wall of the clamping piece, and a fixing claw is provided on the inner side wall of the sealing ring. The fixing claw is a hemispherical protrusion. A groove ring is provided on the outer side wall of the joint body, and an O-ring is provided in the groove ring. A locking nut is also provided on the outside of the joint body. The cable is passed through the inner cavity of the compression nut and the joint body and is fixed by the fixing claw on the inner side wall of the sealing ring.Existing pipe joints require additional sealing for fixing, resulting in complex structures, unsatisfactory results, and cumbersome use. Sealing methods using conduit connections also present the aforementioned problems. Rubber flanges offer good sealing effects, but are cumbersome to use and can add thousands of dollars to the cost of a single cabinet, making them prohibitive for many companies. Therefore, a cabinet cable gland was developed to facilitate and quickly protect cable threading in electrical cabinets while maintaining excellent waterproof sealing performance. Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and develop a cable sealing joint for a cabinet to achieve the goals of fast threading speed and good sealing effect.

[0004] In order to achieve the above-mentioned purpose, the present invention relates to a cabinet cable sealing joint which is a double-membrane sealing leather plug with a protection grade of IP66. Its main structure includes an inner sealing ring and an outer sealing ring connected to the inner sealing ring through a threaded tube. An interface is provided in the center of the inner sealing ring, and a through hole is opened in the center of the outer sealing ring.

[0005] The inner sealing ring, threaded pipe, outer sealing ring and interface involved in the present invention are made of TPU (thermoplastic polyurethane elastomer); the inner sealing ring and the interface are in a cup-lid structure, and the inner sealing ring has multiple specifications to adapt to cables of different specifications and cabinets with different wall thicknesses. When the diameter is 16 mm, the sealing range is 5-9 mm; when the diameter is 20 mm, the sealing range is 7-12 mm; when the diameter is 25 mm, the sealing range is 9-16 mm; when the diameter is 32 mm, the sealing range is 14-21 mm; when the diameter is 40 mm, the sealing range is 19-28 mm; the diameter of the threaded pipe is smaller than the diameters of the inner and outer sealing rings; the cross-section of the outer sealing ring is an isosceles trapezoid; the diameter of the interface is larger than the diameter of the through hole, and the diameter of the interface is adapted to the diameter of the inner sealing ring.

[0006] The cable sealing joint of a cabinet involved in the present invention can also adopt a multi-membrane sealing structure, which is achieved by increasing the number of layers of sealing rings and threaded tubes; it can be applied to cabinets, and can also be applied to occasions such as distribution boxes where cable threading is required.

[0007] Compared with the existing technology, the present invention adopts a novel and reasonable double-membrane sealing structure. The cable is inserted into the interface and out of the through hole. Based on the unique self-shrinking characteristics of TPU (thermoplastic polyurethane elastomer) material, the interface and the through hole fit tightly on the cable, with double protection levels, ensuring sealing performance and waterproof and dustproof performance. The multi-ring structure of the threaded tube is suitable for cabinet boxes of various thicknesses and can ensure the protection level of the connection with the box; it has a simple structure, easy installation, easy wiring, reduces wiring costs, improves the waterproof and dustproof effect of the cabinet, and has good use effect. Description of the drawings:

[0008] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0009] Figure 2 It is a schematic cross-sectional structural diagram of the present invention.

[0010] Figure 3 It is a bottom view structural schematic diagram of the present invention.

[0011] Figure 4 It is a schematic diagram of the use process of the present invention. Specific implementation method:

[0012] The present invention will be further described below through examples with reference to the accompanying drawings.

[0013] Example 1:

[0014] The main structure of a cabinet cable sealing joint involved in this embodiment is as follows Figure 1 As shown, it includes an inner sealing ring 1, a threaded tube 2, an outer sealing ring 3, an interface 4 and a through hole 5; the inner sealing ring 1 is connected to the outer sealing ring 3 through the threaded tube 2, the center of the inner sealing ring 1 is provided with an interface 4, and the center of the outer sealing ring 3 is opened with a through hole 5.

[0015] When a cabinet cable sealing joint involved in this embodiment is used, the outer sealing ring 3 is pressed into the installation hole of the cabinet or distribution box. The cable pierces the interface 4 and enters the inner sealing ring 1. After passing through the threaded tube 2 and the outer sealing ring 3, it passes through the through hole 5 and then enters the cabinet or distribution box. The interface and the through hole are tightly attached to the cable based on the self-shrinking characteristics of the TPU (thermoplastic polyurethane elastomer) material, and the cable is locked at the same time. The locking of the cable by the inner sealing ring 1 and the outer sealing ring 3 realizes double membrane sealing.

[0016] The cabinet cable sealing joint involved in this embodiment has a fast threading speed and has good sealing, waterproof and dustproof functions. A traditional pipe joint was used as a control for testing. The same person used the cabinet cable sealing joint and the traditional pipe joint to perform threading operations. The threading time of the cabinet cable sealing joint was 11.48 seconds, and the threading time of the traditional pipe joint was 27.15 seconds, which shortened the threading time and reduced labor costs. After experimental measurement, the protection level of the cabinet cable sealing joint is IP66.

Claims

1. A cabinet cable sealing joint, characterized in that: It is a double-membrane sealing plug with a protection grade of IP66. The main structure includes an inner sealing ring and an outer sealing ring connected to the inner sealing ring through a threaded tube. An interface is provided in the center of the inner sealing ring, and a through hole is provided in the center of the outer sealing ring. When in use, the cable pierces the interface and enters the inner sealing ring. The material of the inner sealing ring, threaded tube, outer sealing ring and interface is TPU.

2. The cabinet cable sealing joint according to claim 1, characterized in that: The inner sealing ring and the interface are cup-lid structure. The inner sealing ring has several specifications to suit cables of different specifications and cabinets of different wall thicknesses. When the diameter is 16mm, the sealing range is 5-9mm, when the diameter is 20mm, the sealing range is 7-12mm, when the diameter is 25mm, the sealing range is 9-16mm, when the diameter is 32mm, the sealing range is 14-21mm, and when the diameter is 40mm, the sealing range is 19-28mm.

3. The cabinet cable sealing joint according to claim 1, characterized in that: The diameter of the threaded pipe is smaller than the diameters of the inner sealing ring and the outer sealing ring.

4. The cabinet cable sealing joint according to claim 1, characterized in that: The cross section of the outer sealing ring is an isosceles trapezoid.

5. The cabinet cable sealing joint according to claim 1, characterized in that: The diameter of the interface is larger than the diameter of the through hole, and the diameter of the interface is adapted to the diameter of the inner sealing ring.

6. The cabinet cable sealing joint according to any one of claims 1 to 5, characterized in that: It is a multi-membrane sealing structure, which is achieved by increasing the number of layers of sealing rings and threaded pipes.

7. The cabinet cable sealing joint according to claim 6, characterized in that: It can be used in situations where cable threading is required, including cabinets and distribution boxes.

8. The cabinet cable sealing joint according to claim 7, characterized in that: When in use, press the outer sealing ring into the installation hole of the cabinet or distribution box. The cable pierces the interface and enters the inner sealing ring. After passing through the threaded tube and the outer sealing ring, it passes through the through hole and then enters the cabinet or distribution box. The interface and the through hole fit tightly on the cable based on the self-shrinking characteristics of the TPU material, and lock the cable at the same time. The cable is locked by the inner and outer sealing rings to perform double-membrane sealing.

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