Distribution box cable inlet and outlet plugging device

Abstract

The utility model relates to the technical field of distribution box plugging, in particular to a distribution box cable inlet and outlet plugging device, which comprises a table body sealing plug, the table body sealing plug comprises a clamping part, a convex part connected to one end of the clamping part, and a sleeving hole penetrating through the clamping part and the convex part, and at least one inner convex sealing ring is arranged on the inner wall of the sleeving hole. The cable inlet and outlet plugging device is better in plugging and sealing performance, not prone to falling off, good in adaptability and particularly capable of meeting plugging of a cable inlet and a cable outlet of a distribution box installed on a carrying platform in the environment containing combustible gas.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution box blocking, in particular to a distribution box cable inlet and outlet blocking device. Background Art

[0002] A distribution box is an enclosed or semi-enclosed metal cabinet or panel assembly containing switchgear, measuring instruments, protective devices, and auxiliary equipment, all assembled according to electrical wiring requirements. Cable access holes are often pre-installed in the distribution box at the factory. However, during use, large gaps between the cables and the pre-installed holes can easily become intrusive, allowing dust, water, debris, rodents, and ants to enter. These gaps can damage the components and wiring within the distribution box, reducing its service life and safety.

[0003] At present, fireproof putty, H-shaped cross-section guard rings and inverted buckle guard rings are commonly used to seal cables in distribution boxes. Among them, fireproof putty is easy to deform at high temperatures and cannot prevent short-circuit faults caused by small animals gnawing; H-shaped cross-section guard rings and inverted buckle guard rings are not only difficult to install, but also do not fit tightly with the cable inlet and outlet holes on the wall of the distribution box. The poor sealing has caused the cables to shake and the guard rings to fall off. The reliability is insufficient, and it is especially difficult to adapt to the environment containing flammable gases and the application of distribution boxes on mobile platforms. Utility Model Content

[0004] The purpose of the utility model includes providing a cable inlet and outlet sealing device with better sealing performance, not easy to fall off, and good adaptability, especially suitable for environments containing flammable gases and distribution boxes installed on carrier platforms.

[0005] In order to achieve the above purpose, the utility model has the following technical solutions:

[0006] The utility model provides a distribution box cable inlet and outlet blocking device, comprising a platform sealing plug,

[0007] The platform sealing plug includes a clamping portion, a convex portion connected to one end of the clamping portion, and a sleeve hole passing through the clamping portion and the convex portion. The inner wall of the sleeve hole is provided with at least one inner convex sealing ring for improving the sealing performance and cable diameter adaptability. The sleeve hole is used to be sleeved on the outside of the cable, and the outside of the clamping portion is used to plug in the cable inlet and outlet.

[0008] Preferably, the axis center line of the sleeve hole coincides with the axis center lines of the clamping portion and the protrusion.

[0009] Preferably, a barb ring is provided on the outer peripheral surface of the clamping portion to at least enhance the anti-falling performance.

[0010] Preferably, the number of the barb rings is at least 2.

[0011] Preferably, an outer edge of the clamping portion away from the protruding portion is provided with a chamfer for facilitating insertion of a cable inlet and outlet.

[0012] Preferably, at least one end of the sleeve hole is provided with a bell mouth for easy insertion of the cable.

[0013] Preferably, the surface of the convex portion facing the clamping portion is convex toward the clamping portion, which can be used to block a larger hole opened on the wall of the distribution box through the side of the convex portion, thereby increasing the blocking range of the platform sealing plug.

[0014] Preferably, the platform sealing plug is made of an elastomeric material such as silicone rubber.

[0015] Preferably, the distribution box cable inlet and outlet blocking device further comprises a clamping ring for sleeved on the clamping portion.

[0016] Preferably, the plug-in hole on the clamping ring is a tapered hole (ie a tapered hole).

[0017] Preferably, the end surface of the large-diameter end of the tapered hole is recessed inwards to match the convex surface of the convex portion facing the clamping portion.

[0018] Preferably, the length of the clamping ring is smaller than the length of the clamping portion.

[0019] Preferably, the clamping ring is made of plastic or metal.

[0020] Preferably, the clamping ring is made of polypropylene plastic.

[0021] Due to the adoption of the above technical solution, the advantages of the utility model are:

[0022] 1. The utility model does not have the interference of the traditional cross-section H-shaped retaining ring and the end of the inverted retaining ring. After installation, it is easy to achieve that the platform sealing plug clamps the openings on the cable and the distribution box more fully at the same time, and further the inner convex sealing ring with better deformation and filling force tightly clamps the cable, and the sealing is better. It is especially suitable for distribution box applications in flammable gas environments.

[0023] 2. The outside of the clamping part of the utility model is provided with a hook ring to increase friction and prevent the clamping ring from sliding. It is not easy to fall off after installation, which can ensure that the inlet and outlet of the distribution box installed on the mobile platform are more reliably blocked.

[0024] 3. The platform sealing plug of the utility model is not blocked by the traditional H-shaped cross-section retaining ring and the end of the inverted retaining ring, which makes it easier to install on the distribution box.

[0025] 4. The utility model has no gap in the sealing and good stability, which can prevent the cable from shaking, reduce the friction between the cable insulation layer and the distribution box, prevent the cable insulation layer from breaking and short circuiting, and increase the safety of the distribution box.

[0026] 5. The utility model has a simple structure, and through the provision of the inner convex sealing ring, the deformation range of the sleeve hole is improved, while the range by which the clamping portion can be expanded by the cable is reduced. In addition, the inverted hook ring is easily compressible. A model of the utility model can be adapted to the installation of cables with more cable diameters and distribution boxes with more apertures. At the same time, the number of clamping ring models can be reduced, the adaptability is good, the number of molds is reduced, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is an exploded side view of a cable inlet and outlet blocking device for a distribution box provided by an embodiment of the utility model;

[0029] Figure 2 for Figure 1 Schematic diagram of axial section;

[0030] Figure 3 for Figure 1 A schematic diagram of the right side view of the platform sealing plug;

[0031] Figure 4 for Figure 1 Schematic diagram of the application status of the cable inlet and outlet sealing device of the distribution box provided.

[0032] In the figure: 1. distribution box wall; 2. cable; 10. platform sealing plug; 11. convex portion; 12. clamping portion; 121. barb ring; 13. socket hole; 131. inner convex sealing ring; 132. bell mouth; 20. clamping ring; 21. ring body; 22. plug-in hole. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", "left", "right", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0034] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0035] The specific implementation will be described as follows:

[0036] The utility model provides a kind of power distribution box cable import and export plugging device's embodiment, referring to Figure 1 、 Figure 2 、 Figure 3 Including table body sealing plug 10 and snap ring 20, wherein,

[0037] The table body sealing plug 10 includes clamping portion 12, convex portion 11 connected to one end of the clamping portion 12, and sleeve joint hole 13 penetrating the clamping portion 12 and the convex portion 11, the axis of the sleeve joint hole 13 coincides with the axis of the clamping portion 12 and the convex portion 11, both ends of the sleeve joint hole 13 are provided with flared mouth 132, and 4 inner convex sealing rings 131 are provided on the inner wall of the sleeve joint hole 13;The surface of the convex portion 11 towards the clamping portion 12 is a tapered surface with the middle part protruding towards the clamping portion 12;The outer peripheral surface of the clamping portion 12 is provided with barbed ring 121;

[0038] The insertion hole 22 on the snap ring 20 is a tapered hole, the end face of the large-diameter end of the tapered hole is inwardly recessed, and the tapered hole is used for sleeving on the clamping portion 12.

[0039] In the embodiment, the table body sealing plug 10 is made of silicone rubber;The snap ring 20 is made of polypropylene plastic (in special cases, it can also be made of metal, for example, it can be made of stainless steel with good corrosion resistance and high temperature resistance).

[0040] When the utility model is used, referring to Figure 4 , first, select the table body sealing plug 10 with the outer diameter size of the barbed ring 121 equal to or slightly larger than the opening size on the power distribution box (for example, greater than the opening size by 2mm, and the specific size range needs to be adjusted according to the hardness of the table body sealing plug 10, so that it can be easily inserted), and the hole diameter of the inner convex sealing ring 131 is equal to or slightly smaller than the cable diameter;Then, the table body sealing plug 10 is sleeved on the cable to be connected to the power distribution box through the sleeve joint hole 13 thereon;Then, the clamping portion 12 with the cable inserted is inserted into the opening on the power distribution box, until the convex portion 11 contacts one side of the power distribution box wall 1;Finally, select the snap ring 20 with the size of the insertion hole 22 substantially the same as the opening size on the power distribution box wall 1, push the table body sealing plug 10 towards the power distribution box wall 1 with one hand, and sleeve the snap ring 20 on the clamping portion 12 through the insertion hole 22 with the other hand, and push it to the other side of the power distribution box wall 1 contacted by the snap ring 20.

[0041] When the snap ring 20 is sleeved on the clamping portion 12, a small amount of lubricating material such as oil or detergent can be applied outside the clamping portion 12 to make the sleeving easier.

[0042] The utility model can produce a platform sealing plug 10 and a clamping ring 20 of a corresponding size series that can be matched according to the cable diameter and the size of the cable connection opening commonly used on the distribution box.

[0043] The above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention may be implemented. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. This list of all possible embodiments is not exhaustive. Any obvious variations or modifications arising from the technical solution of the present invention remain within the scope of protection of the present invention.

Claims

1. A device for sealing the inlet and outlet of a distribution box cable, comprising a platform sealing plug (10), wherein the platform sealing plug (10) comprises a clamping portion (12), a convex portion (11) connected to one end of the clamping portion (12), and a sleeve hole (13) passing through the clamping portion (12) and the convex portion (11), characterized in that: At least one inwardly convex sealing ring (131) is provided on the inner wall of the sleeve hole (13).

2. The cable inlet and outlet blocking device for a distribution box according to claim 1, characterized in that: A barbed hook ring (121) is provided on the outer peripheral surface of the clamping portion (12).

3. The cable inlet and outlet blocking device for a distribution box according to claim 2, characterized in that: The number of the barb rings (121) is at least 2.

4. The cable inlet and outlet blocking device for a distribution box according to claim 1, characterized in that: The axis center line of the sleeve hole (13) coincides with the axis center lines of the clamping portion (12) and the convex portion (11).

5. The cable inlet and outlet blocking device for a distribution box according to claim 1 or 4, characterized in that: At least one end of the sleeve hole (13) is provided with a bell mouth (132).

6. The cable inlet and outlet blocking device for a distribution box according to claim 1 or 4, characterized in that: The surface of the convex portion (11) facing the clamping portion (12) is convex toward the clamping portion (12).

7. The cable inlet and outlet blocking device for a distribution box according to claim 1, characterized in that: The platform sealing plug (10) is made of silicone rubber.

8. The cable inlet and outlet blocking device for a distribution box according to claim 1, characterized in that: It also includes a clamping ring (20) for sleeve-fitting onto the clamping portion (12).

9. The cable inlet and outlet blocking device for a distribution box according to claim 8, characterized in that: The insertion hole (22) on the snap ring (20) is a tapered hole.

10. The cable inlet and outlet blocking device for a distribution box according to claim 9, characterized in that: The end surface of the large-diameter end of the tapered hole is recessed inwards.

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