Cable threading plate
By designing a cable threading board with a multi-stage sealing structure, the combination of the outer wrapping sleeve, inner wrapping sleeve and central ring sheet is used to solve the problem of poor sealing effect of the cable threading board, and achieve efficient and long-term sealing effect.
Patent Information
- Application Number
- CN202421967855.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-14
AI Technical Summary
After long-term use, the existing cable threading panels have weak sealing effect, especially the outer and inner elastic sleeves are prone to failure, causing rainwater to enter the distribution cabinet.
A cable threading plate is designed, adopting a multi-stage sealing structure, including an outer wrapping sleeve, an inner wrapping sleeve and a central ring sheet. A two-stage seal is formed through the multi-stage step-shaped annular ring and an inner hole of the outer wrapping sleeve, and combined with an elastic middle ring sheet to enhance the sealing effect.
It is achieved that seal failure is not easy to be achieved during long-term use, and the sealing level reaches IP66 or above, ensuring good sealing contact between the cable and the threading plate, and preventing moisture from entering the distribution cabinet.
Smart Images
Figure CN223156498U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of cable installation, and particularly to a cable threading board. Background Art
[0002] The cable threading board is used for the sealed passing of cables in a power distribution cabinet. The cable threading board generally covers the opening provided in the power distribution cabinet, and the cable passes through the middle of the threading board. The inside of the cable threading board is a metal or hard plastic skeleton, and the outside is integrally coated with an elastomer material to achieve the effect of sealing and waterproofing, so as to prevent rainwater from entering the outdoor power distribution cabinet. After the cable is threaded through the related cable threading board, only the outer elastic sleeve is relied on for sealing, or the outer elastic sleeve and the inner elastic sleeve are used to achieve sealing. The outer elastic sleeve is prone to sealing failure under long-term exposure to sunlight and rain, and the inner elastic sleeve is generally thin and is prone to deformation under the long-term action of the natural downward bending of the cable, resulting in a relatively weak overall sealing effect of the cable threading board. Utility Model Content
[0003] In order to improve the above situation, the following technical solutions are proposed in this application:
[0004] A cable threading board includes a main board and a plurality of sealing through-pieces;
[0005] Each of the sealing through-pieces includes an elastic outer wrapping sleeve, an elastic inner wrapping sleeve, and an elastic middle ring piece;
[0006] The main board has a plurality of through-holes; one of the sealing through-pieces corresponds to each of the through-holes;
[0007] The outer wrapping sleeve is located outside the through-hole; the inner wrapping sleeve is located inside the through-hole; the middle ring piece is located inside the through-hole; the middle ring piece has a middle hole; the inner wrapping sleeve has an inner hole; the outer wrapping sleeve is provided with a plurality of coaxial annular rings, so that the outer wrapping sleeve is in a multi-step shape with an inner diameter gradually decreasing from the position close to the main board to the position away from the main board; the port diameter of the inner hole and the diameter of the outermost first-stage annular ring of the outer wrapping sleeve are both smaller than the lowest lower limit of the cable diameter range.
[0008] By adopting the above technical solution, during use, according to the actual diameter of the cable, find a first-stage annular ring within the corresponding diameter range (i.e., the first-stage annular ring with a diameter slightly smaller than the cable), cut and remove the excess material along the root of this stage of the annular ring, pass the cable through this stage of the annular ring, then through the middle hole and the inner hole. The annular ring and the inner hole form a two-stage sealing structure, and at the same time, the middle ring piece on the threading board further enhances the sealing effect on the cable, so that it is not easy to have a sealing failure during long-term use.
[0009] A preferred structure of the cable threading board is that the main board is a rigid board, and an elastomeric soft rubber is wrapped outside the main board. The outer wrapping sleeve protrudes from the outer surface of the main board; the inner wrapping sleeve protrudes from the inner surface of the main board.
[0010] By adopting the above technical solution, the main board is used to support the product shape and ensure the cable passing position; the outer wrapping sleeve protrudes from the outer surface of the main board, and the inner wrapping sleeve protrudes from the inner surface of the main board. This design is used to strengthen the support for the cable; an elastomeric soft rubber is wrapped outside the main board, and the outer wrapping sleeve and the inner wrapping sleeve are used to achieve cable sealing and the sealing between the threading board and the chassis.
[0011] A preferred structure of the cable threading board is that the center of each annular ring, the center of the middle hole, and the center of the inner hole are on the same straight line.
[0012] By adopting the above technical solution, this design facilitates the insertion of the cable, and at the same time, the elastic middle ring piece can further provide a good sealing effect.
[0013] A preferred structure of the cable threading board is that the axis of the annular ring is perpendicular to the main board.
[0014] By adopting the above technical solution, it is beneficial for the cable to pass through and has good shape retention.
[0015] A preferred structure of the cable threading board is that the diameter difference between two adjacent levels of the annular ring is between 1 and 3 mm.
[0016] By adopting the above technical solution, it is convenient to adapt to cables of different diameters.
[0017] A preferred structure of the cable threading board is that the inner wrapping sleeve is a vertical ring at the periphery of the inner hole. The vertical ring is perpendicular to the main board.
[0018] By adopting the above technical solution, the inner wrapping sleeve is beneficial for the cable to pass through, strengthens the wrapping effect on the cable, and improves the sealing performance and service life.
[0019] A preferred structure of the cable threading board is that a screw hole is provided at each of the four corners of the main board.
[0020] By adopting the above technical solution, the main board can be fixed on the box body using bolts.
[0021] A preferred structure of the cable threading board is that there are two protruding parallel elastic frame ribs on the peripheral edge of the inner surface of the main board; the two parallel elastic frame ribs are both outside the four screw holes.
[0022] A preferred structure of the cable threading board is that the height of the elastic frame rib on the inner side is less than the height of the elastic frame rib on the outer side.
[0023] By adopting the above technical solution, the main board is locked on the box body, and two parallel elastic frame ribs are deformed, so that the main board and the box body form a sealed connection, preventing water from entering the box body through the connection seam, and the height of the elastic frame rib located inside is less than the height of the elastic frame rib located outside, so as to achieve a better sealing state.
[0024] A preferred structure of the cable threading board is that a set of inner diameter range marks and arrow marks are arranged on the inner side of the outer wrapping sleeve for each annular ring. The minimum inner diameter of the inner diameter range mark is 1-3 mm larger than the inner diameter of the adjacent outer peripheral annular ring. The arrow mark points to the adjacent outer peripheral annular ring.
[0025] By adopting the above technical solution, the user can refer to the marks and select an annular ring according to the outer diameter of the cable to cut the inner edge of the annular ring to form an opening for the cable to pass through, and the inner diameter of the annular ring should be slightly smaller than the outer diameter of the cable.
[0026] In summary, the cable threading board of the present application has the following beneficial effects: the present application consists of an outer wrapping sleeve and an inner wrapping sleeve to form a two-stage sealing structure, and at the same time, an elastic middle ring piece is arranged between the outer wrapping sleeve and the inner wrapping sleeve to further enhance the sealing effect on the cable, and it is not easy to seal failure after long-term use. Description of the Drawings
[0027] Figure 1 It is a structural diagram of the outer side of the cable threading board.
[0028] Figure 2 It is a partial sectional view of the side view of the cable threading board.
[0029] Figure 3 It is an explosion diagram of the cable of the cable threading board for installing the box body.
[0030] Figure 4 It is a structural diagram of the inner side of the cable threading board.
[0031] Reference numerals: 1, main board; 2, sealed through-piece; 21, outer wrapping sleeve; 22, inner wrapping sleeve; 23, middle ring piece; 101, through-hole; 231, middle hole; 221, inner hole; 211, annular ring; 222, vertical ring; 102, screw hole; 103, elastic frame rib; 212, inner diameter range mark; 213, arrow mark. Detailed Embodiments
[0032] The following further elaborates on the present application in conjunction with the drawings.
[0033] As Figure 1, A cable threading board, comprising a main board 1 and a plurality of sealing through-pieces 2. The main board 1 is a rigid board, such as a metal board, which is used to support the product shape and ensure the cable threading position. An elastomeric soft rubber is wrapped around the main board 1. The sealing through-pieces 2 are integrally formed with or are a component structure with the elastomeric soft rubber. The sealing through-pieces 2 and the elastomeric soft rubber are used to achieve cable sealing and the sealing between the threading board and the chassis.
[0034] Such as Figure 2 , Each of the sealing through-pieces 2 includes an elastic outer wrapping sleeve 21, an elastic inner wrapping sleeve 22, and an elastic middle ring piece 23.
[0035] The main board 1 has a plurality of through-holes 101. One of the sealing through-pieces 2 is integrally formed on each of the through-holes 101.
[0036] The peripheral edge of the outer wrapping sleeve 21 is integrally formed on the outside of the through-hole 101. The peripheral edge of the inner wrapping sleeve 22 is integrally formed on the inside of the through-hole 101. The peripheral edge of the middle ring piece 23 is integrally formed inside the through-hole 101. The middle ring piece 23 has a middle hole 231. The inner wrapping sleeve 22 has an inner hole 221. The outer wrapping sleeve 21 is provided with a plurality of coaxial annular rings 211, so that the outer wrapping sleeve 21 is in a multi-stage stepped shape with the inner diameter gradually decreasing from the position close to the main board 1 to the position far from the main board 1; the port diameter of the inner hole 221 and the diameter of the outermost first-stage annular ring of the outer wrapping sleeve 21 are both smaller than the lowest lower limit of the cable diameter range.
[0037] It should be noted that the above-mentioned plurality of sealing through-pieces 2 may include a plurality of sealing through-pieces 2 of the same size and a plurality of sealing through-pieces 2 of different sizes to adapt to cables of different diameters.
[0038] Reference Figure 3 , When installing a cable using this cable threading board, according to the diameter of the cable, select a sealing through-piece 2 of a suitable size. The diameter of the cable should be greater than the first-stage annular ring 211. After selection, for the multi-stage annular rings 211, an annular ring 211 slightly smaller than the cable diameter can be further selected. By cutting the outer wrapping sleeve 21 along the inside of the annular ring 211 to form an opening, then passing the cable through this opening, that is, the inside of the annular ring 211, and then passing the cable through the middle hole 231 and the inner hole 221 in sequence. This cable threading board consists of the outer wrapping sleeve 21 and the inner wrapping sleeve 22 to form a two-stage sealing structure. At the same time, an elastic middle ring piece 23 is provided between the outer wrapping sleeve 21 and the inner wrapping sleeve 22 to further enhance the sealing effect on the cable, and it is not easy to have a sealing failure after long-term use. Through the above design, the sealing level of this threading board for the cable reaches above IP66.
[0039] Preferably, the outer wrapping sleeve 21 protrudes from the outer surface of the main board 1, and the inner wrapping sleeve 22 preferably protrudes from the inner surface of the main board 1, so as to strengthen the supporting effect on the cable, reduce the bending of the cable at this position, and enhance the protection of the cable.
[0040] Preferably, the centers of each of the annular rings 211, the center of the middle hole 231, and the center of the inner hole 221 are on the same straight line. This design facilitates the insertion of the cable and enables the cable to maintain good sealed contact with the wire passing board. The perforation 101, the middle hole 231, and the inner hole 221 of the main board 1 are in communication with each other.
[0041] The cross-section of the annular ring 211 is square, and the annular ring 211 is perpendicular to the main board 1. The annular ring 211 with such a structure is conducive to the passing of the cable, and after long-term use, the shape of the annular ring 211 remains good.
[0042] In order to basically ensure the sealed wrapping effect on the cable, in this application, the diameter difference between adjacent two levels of the annular rings 211 is set to be between 1 and 3 mm, so as to facilitate the adaptation to cables of different diameters.
[0043] As Figure 4 , in order to strengthen the wrapping effect of the inner wrapping sleeve 22 on the cable, in this application, the inner wrapping sleeve 22 is designed to have a vertical ring 222 at the periphery of the inner hole 221. The vertical ring 222 is perpendicular to the main board 1. Then, the inner wrapping sleeve 22 is conducive to the passing of the cable, strengthens the wrapping effect on the cable, and improves the sealing performance and service life.
[0044] In order to install the main board 1 on a cabinet such as a power distribution cabinet, in this application, four corners of the main board 1 are each provided with a screw hole 102, and then the main board 1 can be fixed on the cabinet using bolts.
[0045] As Figure 4 , considering that the wire passing board and the cabinet should have good contact sealing performance, in this application, the inner surface periphery of the main board 1 is designed to have two protruding parallel elastic frame ribs 103. The two parallel elastic frame ribs 103 are both outside the four screw holes 102, and the height of the inner elastic frame rib 103 is less than the height of the outer elastic frame rib 103. When the main board 1 is locked on the cabinet, the two parallel elastic frame ribs 103 are deformed, so that the main board 1 and the cabinet form a sealed connection, preventing water from entering the cabinet through this connection seam.
[0046] As Figure 1, a set of inner diameter range identifiers 212 and arrow identifiers 213 are provided on the inner side of each annular ring 211 of the outer wrapping sleeve 21. The minimum inner diameter of the inner diameter range identifier 212 is 1-3 mm larger than the inner diameter of the adjacent outer peripheral annular ring 211. The arrow identifier 213 points to the adjacent outer peripheral annular ring 211. Users can refer to the identifiers and select an annular ring 211 according to the outer diameter of the cable to cut the inner edge of the annular ring 211 to form an opening for the cable to pass through, and the inner diameter of this annular ring 211 should be slightly smaller than the outer diameter of the cable.
[0047] The cable threading board of the present application is composed of an outer wrapping sleeve 21 and an inner wrapping sleeve 22 to form a two-stage sealing structure, and at the same time, an elastic middle ring piece is provided, and the sealing effect on the cable is good, and it is not easy to fail in sealing after long-term use.
[0048] The above are only the preferred embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various equivalent replacements and modifications can be made according to the above description, and these replacements and modifications should all be covered within the protection scope of the present application.
Claims
1. A cable threading board, characterized in that, It includes a main board (1) and a plurality of sealed through-pieces (2); Each of the sealed through-pieces (2) includes an elastic outer wrapping sleeve (21), an elastic inner wrapping sleeve (22), and an elastic middle ring piece (23); The main board (1) has a plurality of perforations (101); one of the sealed through-pieces (2) corresponds to each of the perforations (101); The outer wrapping sleeve (21) is located outside the perforation (101); the inner wrapping sleeve (22) is located inside the perforation (101); the middle ring piece (23) is located inside the perforation (101); the middle ring piece (23) has a middle hole (231); the inner wrapping sleeve (22) has an inner hole (221); the outer wrapping sleeve (21) is provided with a plurality of coaxially arranged annular rings (211), so that the outer wrapping sleeve (21) is in a multi-step shape with an inner diameter gradually decreasing from the position close to the main board (1) to the position far from the main board (1); the port diameter of the inner hole (221) and the diameter of the outermost first-stage annular ring of the outer wrapping sleeve (21) are both smaller than the lowest lower limit of the cable diameter range.
2. The cable threading board according to claim 1, wherein, The main board (1) is a rigid board, and the outer surface of the main board (1) is wrapped with an elastic soft rubber; the outer wrapping sleeve (21) protrudes from the outer surface of the main board (1); the inner wrapping sleeve (22) protrudes from the inner surface of the main board (1).
3. The cable threading board according to claim 1, characterized in that, The centers of each of the annular rings (211), the center of the middle hole (231), and the center of the inner hole (221) are on the same straight line.
4. The cable threading board according to claim 1, characterized in that The axis of the annular ring (211) is perpendicular to the main board (1).
5. The cable threading board according to claim 1, wherein The diameter difference between two adjacent stages of the annular rings (211) is between 1 and 3 mm.
6. The cable threading board according to claim 1, wherein The inner wrapping sleeve (22) is a vertical ring (222) at the periphery of the inner hole (221); the vertical ring (222) is perpendicular to the main board (1).
7. The cable threading board according to claim 1, characterized in that, A screw hole (102) is provided at each of the four corners of the main board (1).
8. The cable threading board according to claim 7, characterized in that Two parallel protruding elastic frame ribs (103) are provided at the periphery of the inner surface of the main board (1); the two parallel elastic frame ribs (103) are both outside the four screw holes (102).
9. The cable threading board according to claim 8, characterized in that, The height of the inner elastic frame rib (103) is less than the height of the outer elastic frame rib (103).
10. The cable threading board according to claim 1, characterized in that, An inner diameter range mark (212) and an arrow mark (213) are provided on the inner side of each of the annular rings (211) of the outer wrapping sleeve (21); the minimum inner diameter of the inner diameter range mark (212) is 1 to 3 mm larger than the inner diameter of the adjacent outer annular ring (211); the arrow mark (213) points to the adjacent outer annular ring (211).