Sealing device

Abstract

The utility model provides a sealing device, the sealing device comprises a wire passing structure, a limiting structure and a sealing member, the wire passing structure is used for sleeving a cable to seal the cable, and the wire passing structure is used for being inserted into a wire passing hole of an electric cabinet; the limiting structure is connected to the outer portion of one end of the wire passing structure in a sleeving mode and located in the electric control box. And the sealing element is sleeved outside the wire passing structure and is clamped between the limiting structure and the inner wall of the electric cabinet. According to the sealing device, the sealing effect of the sealing device can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of dustproof and waterproof technology, and in particular to a sealing device. Background Technology

[0002] Electrical control boxes, as devices used to assemble various electrical components and control and measurement devices, are often used in relatively harsh environments, such as mines in the field. Because the environment in which electrical control boxes operate is relatively harsh, and to ensure that the various electrical components inside the box are protected from environmental influences such as dust and moisture, the openings at the wiring locations of the electrical control box need to be effectively sealed.

[0003] In related technologies, an electrical control box includes a housing and a sealing device. The sealing device is generally a sealing ring, which is located inside the opening and wraps around the cable. This allows the cable to pass through the opening and be sealed by the sealing ring, thus preventing moisture, dust, and other contaminants from entering the electrical control box.

[0004] However, since the sealing ring is located directly in the opening of the enclosure, it is very easy for the sealing ring to come off from the opening when the cable is pulled, thus affecting the sealing effect. Utility Model Content

[0005] This disclosure provides a sealing device that can improve the sealing effect. The technical solution is as follows:

[0006] This disclosure provides a sealing device, which includes a wire-passing structure, a limiting structure, and a sealing element. The wire-passing structure is used to cover the cable to seal it and is inserted into the wire-passing hole of an electrical control box. The limiting structure is sleeved on the outside of one end of the wire-passing structure and is located inside the electrical control box. The sealing element is sleeved on the outside of the wire-passing structure and is clamped between the limiting structure and the inner wall of the electrical control box.

[0007] In another implementation of this disclosure, the wire guide structure includes a wire guide cylinder, which is coaxially located in the wire guide hole, and the outer wall of the wire guide cylinder has a first external thread structure; the limiting structure has a first internal thread structure that mates with the first external thread.

[0008] In another implementation of this disclosure, the wire guide structure further includes a limiting protrusion that protrudes radially outward along the wire guide tube and is connected to the outer wall of the wire guide tube.

[0009] In another implementation of this disclosure, the wire guiding structure further includes a plurality of grippers, a clamping sleeve, and a clamping sealing sleeve. The plurality of grippers are located at the end of the wire guiding spool away from the limiting structure and are arranged at intervals along the circumference of the wire guiding spool. The plurality of grippers are all connected to the wire guiding spool, and each gripper extends along the length direction of the wire guiding spool. The clamping sleeve is located outside the plurality of grippers and is connected to the outer wall of the wire guiding spool. The clamping sleeve is used to apply a radially inward force to the plurality of grippers. The clamping sealing sleeve is located inside the plurality of grippers and is in contact with the grippers.

[0010] In another implementation of this disclosure, the clamping sealing sleeve has a plurality of spaced through holes that extend along the axial direction of the clamping sealing sleeve.

[0011] In another implementation of this disclosure, the clamping sleeve has a second internal thread structure inside, the outer wall of the wire guide tube has a second external thread structure, and the second external thread structure and the first external thread structure are respectively located on both sides of the limiting protrusion, and the second external thread structure cooperates with the second internal thread structure.

[0012] In another implementation of this disclosure, the first external thread structure and the second external thread structure have opposite thread directions.

[0013] In another implementation of this disclosure, the wire guide tube includes multiple arc-shaped wire guide plates, which are joined together along their own arc length direction; the limiting protrusion includes multiple arc-shaped outer protrusions corresponding one-to-one with the multiple wire guide plates, the outer protrusions being connected to the outer wall of the corresponding wire guide plate, and adjacent two outer protrusions being joined together.

[0014] In another implementation of this disclosure, the outer convex plate has a protrusion at one end along its own arc length direction and a groove at the other end; in two adjacent outer convex plates, the protrusion of one outer convex plate is located in the groove of the other outer convex plate.

[0015] In another implementation of this disclosure, the sealing element includes a sealing body and sealing ring portions located on opposite sides of the sealing body along the axial direction of the sealing body. The sealing ring portions are connected to the sealing body, and the outer diameter of the sealing ring portions is smaller than the outer diameter of the sealing body.

[0016] The beneficial effects of the technical solutions provided in this disclosure are:

[0017] When the sealing device provided in this embodiment is used to seal an electrical control box, the sealing device includes a wire-passing structure that covers and seals the cable. This wire-passing structure is inserted into the wire-passing hole of the electrical control box. The cable can then pass through the wire-passing structure, allowing it to connect to the internal electrical equipment. Simultaneously, the cable is sealed by the wire-passing structure as it passes through, reducing the risk of dust and other contaminants entering the electrical control box along with the cable.

[0018] Furthermore, since the sealing device also includes a limiting structure and a sealing element, with the limiting structure located inside the electrical control box and sleeved on the outside of the cable-passing structure, and the sealing element sleeved on one end of the cable-passing structure and clamped between the limiting structure and the inner wall of the electrical control box, the limiting structure can confine the cable-passing structure inside the electrical control box, preventing it from separating from the electrical control box and affecting the sealing effect when the cable is pulled. Moreover, the sealing element can seal the connection between the cable-passing structure and the electrical control box, preventing dust or moisture from entering the electrical control box from the outside of the cable-passing structure.

[0019] As can be seen, the above sealing device can not only prevent the sealing device from falling off the electrical control box, but also seal the wiring holes of the electrical control box to prevent moisture and other substances from entering the electrical control box. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 An exploded view of a sealing device is provided as an embodiment of this disclosure;

[0022] Figure 2 for Figure 1 Left view of the clamping seal sleeve;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the middle-pass spool and the grippers;

[0024] Figure 4 for Figure 3 A schematic diagram of the exploded structure of the intermediate bobbin.

[0025] The symbols in the diagram represent the following meanings:

[0026] 1. Wire guiding structure; 11. Wire guiding cylinder; 111. Wire guiding plate; 12. Limiting protrusion; 121. Outer protrusion plate; 1211. Protrusion; 1212. Groove; 13. Gripper; 14. Clamping sleeve; 15. Clamping sealing sleeve; 150. Through hole;

[0027] 2. Limiting structure; 21. Connecting sleeve; 22. Abutment ring;

[0028] 3. Sealing element; 31. Sealing body; 32. Sealing ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0030] This disclosure provides a sealing device, such as... Figure 1 As shown, the sealing device includes a wire-passing structure 1, a limiting structure 2, and a sealing element 3. The wire-passing structure 1 is used to cover the cable to seal it.

[0031] The limiting structure 2 is sleeved on the outside of one end of the wire-passing structure 1 and is located inside the electrical control box. The sealing element 3 is sleeved on the outside of the wire-passing structure 1 and is clamped between the limiting structure 2 and the inner wall of the electrical control box.

[0032] When the sealing device provided in this embodiment is used to seal an electrical control box, the sealing device includes a wire-passing structure 1, which is fitted over and seals the cable. The wire-passing structure 1 is inserted into the wire-passing hole of the electrical control box. This allows the wire-passing structure 1 to be inserted into the wire-passing hole of the electrical control box, and the cable to pass through it, enabling the cable to pass through the electrical control box and connect electrically with the internal electrical equipment. Simultaneously, the cable is sealed by the wire-passing structure 1 as it passes through, reducing the risk of dust and other contaminants entering the electrical control box along with the cable.

[0033] Furthermore, since the sealing device also includes a limiting structure 2 and a sealing element 3, with the limiting structure 2 located inside the electrical control box and sleeved on the outside of the cable-passing structure 1, and the sealing element 3 sleeved on one end of the cable-passing structure 1 and clamped between the limiting structure 2 and the inner wall of the electrical control box, the limiting structure 2 can limit the cable-passing structure 1 inside the electrical control box, preventing it from separating from the electrical control box and affecting the sealing effect when the cable is pulled. Moreover, the sealing element 3 can seal the connection between the cable-passing structure 1 and the electrical control box, preventing dust or moisture from entering the electrical control box from the outside of the cable-passing structure 1.

[0034] As can be seen, the above sealing device can not only prevent the sealing device from falling off the electrical control box, but also seal the wiring holes of the electrical control box to prevent moisture and other substances from entering the electrical control box.

[0035] Optionally, the wire guide structure 1 includes a wire guide cylinder 11, which is coaxially located in the wire guide hole, and the outer wall of the wire guide cylinder 11 has a first external thread structure. The limiting structure 2 has a first internal thread structure that mates with the first external thread.

[0036] In the above implementation, a first external thread structure is provided on the outer wall of the wire guide 11, and a first internal thread structure is provided inside the limiting structure 2. In this way, the threaded connection between the wire guide structure 1 and the limiting structure 2 can be realized through the first external thread structure and the first internal thread structure, which facilitates the connection between the two and also facilitates the disassembly and assembly of the sealing device in the electrical control.

[0037] In this embodiment, the limiting structure 2 is a nut. The limiting structure 2 includes a connecting sleeve 21 and an abutment ring 22 located at the end of the connecting sleeve 21 facing the wire guide 11 and the sealing element 3. The abutment ring 22 is coaxially connected to the connecting sleeve 21. The outer diameter of the abutment ring 22 is larger than the outer diameter of the connecting sleeve 21. The connecting sleeve 21 is used for threaded connection with the wire guide 11. The abutment ring 22 is used for abutting against the sealing element 3. This simplifies the structure of the limiting structure 2 and facilitates its manufacture.

[0038] In other examples, the wire guide 11 and the limiting structure 2 can also be connected in other ways, such as by connecting them together with a curing adhesive, but this makes disassembly inconvenient.

[0039] In this embodiment, the seal 3 is an annular sealing rubber gasket. The seal 3 is clearance-fitted with the wiring structure 1. This allows the seal 3 to quickly deform and seal the connection between the wiring structure 1 and the electrical control box when the limiting structure 2 is connected to the wiring structure 1.

[0040] To enable rapid deformation of the seal 3, the seal 3 includes a sealing body 31 and sealing ring portions 32 located on opposite sides of the sealing body 31 along its axial direction. The sealing ring portions 32 are connected to the sealing body 31, and the outer diameter of the sealing ring portions 32 is smaller than the outer diameter of the sealing body 31. Both the sealing body 31 and the sealing ring portions 32 are clearance-fitted with the outer wall of the wire-passing structure 1.

[0041] In addition, to facilitate the replacement of seal 3 and reduce the cost of use, seal 3 can be set as two semi-annular parts, which are joined together to form a complete seal 3.

[0042] Optionally, the wire guide structure 1 further includes a limiting protrusion 12, which protrudes outward along the radial direction of the wire guide cylinder 11 and is connected to the outer wall of the wire guide cylinder 11.

[0043] In the above implementation, the limiting protrusion 12 is used to limit the wire passage structure 1 to be stuck outside the electrical control box, preventing the wire passage tube 11 from being fully inserted into the electrical control box and making it inconvenient to move it out.

[0044] In other words, the wire guide tube 11 can be limited in the wire guide hole of the electrical control box by the cooperation of the limiting protrusion 12 and the limiting structure 2, so that it will not be completely moved into or completely moved out of the electrical control box.

[0045] In this embodiment, in order to further increase the contact area between the wire guide structure 1 and the limiting structure 2, the limiting protrusion 12 is an annular flange. The limiting protrusion 12 is sleeved on the outside of the wire guide tube 11, and the outer diameter of the limiting protrusion 12 is larger than the inner diameter of the wire guide hole.

[0046] See also Figure 1 Optionally, the wire guiding structure 1 also includes a plurality of grippers 13, a clamping sleeve 14 and a clamping sealing sleeve 15. The plurality of grippers 13 are located at one end of the wire guiding cylinder 11 away from the limiting structure 2 and are arranged at intervals along the circumference of the wire guiding cylinder 11. Each gripper 13 is connected to the wire guiding cylinder 11 and extends along the length direction of the wire guiding cylinder 11.

[0047] The clamping sleeve 14 is located outside the plurality of jaws 13 and is connected to the outer wall of the cable guide spool 11. The clamping sleeve 14 is used to apply a radially inward force to the plurality of jaws 13. The clamping sealing sleeve 15 is located inside the plurality of jaws 13 and is in contact with the jaws 13. The clamping sealing sleeve 15 is fitted over the cable and is used to seal the cable.

[0048] In the above implementation, the clamping sleeve 14 is connected to the cable guide spool 11 and applies a radial force to the clamping jaws 13. Thus, when the clamping sleeve 14 is connected to the cable guide spool 11, it naturally applies a radially inward force to the clamping jaws 13. This, in turn, causes the clamping sleeve 14 to apply a radially inward force to the internal clamping sleeve 14, allowing it to tightly grip the cable inside and improve the sealing effect. Furthermore, this configuration allows the clamping sleeve 14 and the cable guide spool 11 to be separate components, facilitating the selection of a suitable clamping sleeve 14 for cables of different outer diameters.

[0049] In this embodiment, to facilitate the installation of the clamping sealing sleeve 15, the outer diameter of the clamping sealing sleeve 15 is larger than the inner diameter of the wire guide spool 11. One end of the clamping sealing sleeve 15 abuts against the end face of the wire guide spool 11.

[0050] In addition, to increase the radial force of the clamping sleeve 14 on the jaws 13, the outer diameter of the annular structure formed by the multiple jaws 13 is larger than the outer diameter of the wire guide spool 11. Thus, when the clamping sleeve 14 is connected to the wire guide spool 11, it will naturally apply a radially inward force to the jaws 13.

[0051] In this embodiment, to enhance the sealing effect of the clamping sealing sleeve 15, the clamping sealing sleeve 15 is a rubber sleeve. Meanwhile, to prevent the grippers 13 from scratching the clamping sealing sleeve 15 when gripping it, the grippers 13 can be rubber structural components made of the same material as the clamping sealing sleeve 15.

[0052] Figure 2 for Figure 1 The left view of the clamping seal sleeve in the middle, combined with Figure 2 Optionally, the clamping sealing sleeve 15 has a plurality of spaced through holes 150 extending along the length of the wire spool 11.

[0053] In the above implementation, multiple through holes 150 are provided inside the clamping sealing sleeve 15. Multiple cables can be sealed one by one through the multiple through holes 150 to prevent dust or moisture from entering the electrical control box along the gaps between the cables when multiple cables pass through a through hole 150 at the same time, thereby further improving the sealing effect.

[0054] In this embodiment, the number of through holes 150 can be the same as the number of cables, with one through hole 150 corresponding to one cable. Each cable passes through the corresponding through hole 150 and is sealed to the wall of the corresponding through hole 150.

[0055] See also Figure 1 Optionally, the clamping sleeve 14 has a second internal thread structure inside, and the outer wall of the wire guide 11 has a second external thread structure. The second external thread structure and the first external thread structure are located on opposite sides of the limiting protrusion 12, and the second external thread structure cooperates with the second internal thread structure.

[0056] In the above implementation, the cooperation between the second internal thread structure and the second external thread structure enables a threaded connection between the wire guide 11 and the clamping sleeve 14, thereby facilitating the disassembly and reassembly of the wire guide 11 and the clamping sleeve 14. At the same time, when the clamping sleeve 14 is fitted over the wire guide 11, it will naturally apply a radial force to the multiple grippers 13.

[0057] In other examples, the clamping sleeve 14 can be connected to the wire guide spool 11 in other ways. For example, the clamping sleeve 14 can be fitted outside the wire guide spool 11, and then a limiting rod or other structure that restricts the movement of the clamping sleeve 14 can be provided outside the wire guide spool 11.

[0058] Optionally, the first external thread structure and the second external thread structure have opposite thread directions.

[0059] The first external thread structure and the second external thread structure have opposite thread directions. This allows the wire guide spool 11 to achieve a tight connection with the clamping sealing sleeve 15 and the limiting structure 2 simultaneously when the wire guide spool 11 rotates, thereby improving connection efficiency.

[0060] Figure 3 for Figure 1 A schematic diagram of the structure of the bobbin and its grippers. Figure 4 for Figure 3 Exploded view of the structure of the intermediate spool, combined with Figure 3 and 4 Optionally, the wire guide 11 includes multiple arc-shaped wire guide plates 111, which are joined together along their own arc length direction.

[0061] The center of the arc corresponding to each wire guide plate 111 is located on the axis of the wire guide tube 11, and each wire guide plate 111 is threadedly engaged with the limiting structure 2.

[0062] The limiting protrusion 12 includes a plurality of arc-shaped outer protrusions 121 corresponding to a plurality of wire guide plates 111. The outer protrusions 121 are connected to the outer wall of the corresponding wire guide plate 111, and two adjacent outer protrusions 121 are mated together.

[0063] In the above implementation, the wire guide plate 111 allows the wire guide cylinder 11 to be a split structure. This means that if a part of the wire guide cylinder 11 is damaged, only the wire guide plate 111 containing the corresponding part needs to be replaced, without replacing the entire wire guide cylinder 11, thus reducing the cost of the sealing device. Simultaneously, the limiting protrusions 12 are configured as multiple arc-shaped external protrusions 121 corresponding one-to-one with the multiple wire guide plates 111. This not only facilitates the arrangement of the limiting protrusions 12 within the wire guide plates 111 but also reduces the overall manufacturing cost of the wire guide structure 1.

[0064] Optionally, the outer convex plate 121 has a protrusion 1211 at one end along its own arc length direction and a groove 1212 at the other end. In two adjacent outer convex plates 121, the protrusion 1211 of one outer convex plate 121 is located in the groove 1212 of the other outer convex plate 121.

[0065] In the above implementation, the cooperation between the protrusion 1211 and the groove 1212 facilitates the positioning and docking between two adjacent outer protrusions 121 and the wire guide plate 111, so that multiple wire guide plates 111 and multiple outer protrusions 121 can be quickly positioned and assembled together.

[0066] In this embodiment, the protrusion 1211 has a rectangular cross-section along the axial direction of the wire guide 11, and correspondingly, the groove is an opening with a rectangular cross-section along the axial direction of the wire guide 11. This facilitates the fabrication of the outer protrusion 121.

[0067] In other examples, to enhance the positioning effect, the cross-section of the protrusion 1211 along the axial direction of the wire guide 11 can also be trapezoidal, triangular, or similar. Correspondingly, the cross-section of the groove along the axial direction of the wire guide 11 can also be trapezoidal or triangular, or similar.

[0068] Optionally, the protruding plate 121 and the corresponding wire guide plate 111 are integral structural components. This simplifies the manufacturing process of the wire guide 11 and reduces manufacturing costs.

[0069] The following is a brief introduction to the usage process of the sealing device provided in the embodiments of this disclosure:

[0070] Combination Figure 1 First, the multiple wire guide plates 111 in the sealing device are positioned and assembled together by the outer protrusion plate 121 to form a wire guide cylinder 11. The wire guide cylinder 11 is then inserted into the wire guide hole of the electrical control box, so that the outer protrusion plate 121 abuts against the outer wall of the electrical control box. At the same time, the sealing element 3 is arranged inside the electrical control box and fitted over the wire guide cylinder. The sealing element 3 is clamped between the electrical control box and the wire guide cylinder 11 by the limiting structure 2.

[0071] Then, the clamping sealing sleeve 15 is inserted into the plurality of jaws 13, so that the clamping sealing sleeve 15 abuts against the end of the cable guide spool 11. The cable is then passed through the through hole 150 in the clamping sealing sleeve 15. The clamping sleeve 14 is then placed over the plurality of jaws 13 and connected to the cable guide spool 11.

[0072] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A sealing device, characterized in that, The sealing device includes a wire passage structure (1), a limiting structure (2), and a sealing element (3). The wire passage structure (1) is used to cover the cable to seal the cable, and the wire passage structure (1) is used to be inserted into the wire passage hole of the electrical control box. The limiting structure (2) is sleeved on the outside of one end of the wire passing structure (1) and located inside the electrical control box; The sealing element (3) is sleeved outside the wiring structure (1) and clamped between the limiting structure (2) and the inner wall of the electrical control box.

2. The sealing device according to claim 1, characterized in that, The wire guide structure (1) includes a wire guide cylinder (11), which is coaxially located in the wire guide hole, and the outer wall of the wire guide cylinder (11) has a first external thread structure. The limiting structure (2) has a first internal thread structure that mates with the first external thread.

3. The sealing device according to claim 2, characterized in that, The wire guide structure (1) further includes a limiting protrusion (12), which protrudes outward along the radial direction of the wire guide tube (11) and is connected to the outer wall of the wire guide tube (11).

4. The sealing device according to claim 3, characterized in that, The wire guide structure (1) further includes multiple grippers (13), a clamping sleeve (14) and a clamping sealing sleeve (15). The multiple grippers (13) are located at one end of the wire guide tube (11) away from the limiting structure (2) and are arranged at intervals along the circumference of the wire guide tube (11). The multiple grippers (13) are all connected to the wire guide tube (11), and each gripper (13) extends along the length direction of the wire guide tube (11). The clamping sleeve (14) is located outside the plurality of jaws (13) and is connected to the outer wall of the wire guide spool (11). The clamping sleeve (14) is used to apply a radially inward force to the plurality of jaws (13). The clamping sealing sleeve (15) is located inside the plurality of jaws (13) and is in contact with the jaws (13).

5. The sealing device according to claim 4, characterized in that, The clamping sealing sleeve (15) has a plurality of spaced through holes (150) inside, which extend along the axial direction of the clamping sealing sleeve (15).

6. The sealing device according to claim 4, characterized in that, The clamping sleeve (14) has a second internal thread structure inside, and the outer wall of the wire guide (11) has a second external thread structure. The second external thread structure and the first external thread structure are located on both sides of the limiting protrusion (12), and the second external thread structure cooperates with the second internal thread structure.

7. The sealing device according to claim 6, characterized in that, The first external thread structure has the opposite thread direction to the second external thread structure.

8. The sealing device according to claim 3, characterized in that, The wire guide tube (11) includes multiple arc-shaped wire guide plates (111), and the multiple wire guide plates (111) are joined together along their own arc length direction; The limiting protrusion (12) includes a plurality of arc-shaped outer protrusions (121) corresponding one-to-one with the plurality of wire guide plates (111). The outer protrusions (121) are connected to the outer wall of the corresponding wire guide plate (111), and two adjacent outer protrusions (121) are joined together.

9. The sealing device according to claim 8, characterized in that, The outer convex plate (121) has a protrusion (1211) at one end along its own arc length direction and a groove (1212) at the other end; In two adjacent protruding plates (121), the protrusion (1211) of one protruding plate (121) is located in the groove (1212) of the other protruding plate (121).

10. The sealing device according to any one of claims 1-9, characterized in that, The sealing element (3) includes a sealing body (31) and sealing ring portions (32) located on opposite sides of the sealing body (31) along the axial direction of the sealing body (31). The sealing ring portions (32) are connected to the sealing body (31), and the outer diameter of the sealing ring portions (32) is smaller than the outer diameter of the sealing body (31).

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