A sealing protection device for a cable termination

Abstract

The present application relates to cable protection structure, disclose a kind of sealing protection device for cable terminal, comprising: transparent protection cylinder, upper end connector and sealing base, the both ends of transparent protection cylinder are equipped with first flange and second flange respectively, first flange and second flange are equipped with a plurality of first locking groove respectively;Upper end connector and sealing base are protruded with a plurality of first flexible locking block, first flexible locking block includes clamping column and clamping block, the cross-sectional dimension of clamping column is less than the cross-sectional dimension of first locking groove, the cross-sectional dimension of clamping block is greater than the cross-sectional dimension of first locking groove, clamping block is clamped in the other direction of first locking groove after passing through first locking groove from one direction, to connect upper end connector with first flange, sealing base is connected with second flange, the middle part of upper end connector is equipped with through-hole, and through-hole is used to pass through cable, the closed space formed by upper end connector, transparent protection cylinder and sealing base is used to accommodate cable terminal.

Description

Technical Field

[0001] This invention relates to cable protection structures, and in particular to a sealing and protective device for cable terminations. Background Technology

[0002] Cable terminations are core accessories for power cable lines, installed at the cable end, and provide insulation, waterproofing, and dustproofing. They are crucial components for ensuring the safe and stable operation of power cables. During routine inspections and hazard checks, maintenance personnel must first disassemble the external protective cover to check for common faults such as loose terminals or moisture inside the casing.

[0003] Because the external protective cover is energized during normal operation, it is necessary to shut down the power before disassembling it for inspection, which makes the inspection difficult and interferes with the normal power supply in the area. Furthermore, after the external protective cover is disassembled and reassembled multiple times, the gaps between the components are prone to increase, which directly leads to a decrease in the overall sealing performance. Poor sealing will further aggravate problems such as insulation deterioration, terminal corrosion, and poor contact, creating a vicious cycle.

[0004] Therefore, improving the convenience of inspection and sealing effect for cable terminations has become an urgent technical problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to improve the convenience of inspection and the sealing effect of cable terminations.

[0006] To address the aforementioned technical problems, this invention provides a sealing and protective device for cable terminations, comprising: a transparent protective cylinder, an upper connector, and a sealing base; the transparent protective cylinder has a first flange and a second flange at its two ends, and the first flange and the second flange each have a plurality of first locking grooves; the upper connector and the sealing base have a plurality of first flexible locking blocks protruding from them, each first flexible locking block comprising a locking pin and a locking block, the locking pin having a cross-sectional dimension smaller than the first locking groove's cross-sectional dimension, and the locking block having a cross-sectional dimension larger than the first locking groove's cross-sectional dimension; the locking block passes through the first locking groove from one direction and locks into the first locking groove from the other direction, thereby connecting the upper connector to the first flange and the sealing base to the second flange; wherein, the upper connector has a through hole in its middle for the cable to pass through, and the sealed space formed by the upper connector, the transparent protective cylinder, and the sealing base is used to accommodate the cable termination.

[0007] In one embodiment, the transparent protective cylinder includes a first protective shell and a second protective shell. The first protective shell includes a first connecting edge and a second connecting edge, and the second protective shell includes a third connecting edge and a fourth connecting edge. The first connecting edge and the third connecting edge are rotatably connected. An elastic element is provided between the first connecting edge and the third connecting edge to keep the first protective shell and the second protective shell closed. Both the second connecting edge and the fourth connecting edge are covered with an elastic sealing body. When the first protective shell and the second protective shell are rotatably closed, the elastic sealing body on the second connecting edge and the elastic sealing body on the fourth connecting edge are in contact. The upper end of the first protective shell and the upper end of the second protective shell form a first flange, and the lower end of the first protective shell and the lower end of the second protective shell form a second flange.

[0008] In one embodiment, the sealing and protective device further includes a joint sealing strip. The first protective shell near the first connecting edge and the second protective shell near the third connecting edge are each provided with a plurality of second locking grooves. The second locking grooves have the same structure as the first locking grooves. The joint sealing strip is provided with a plurality of second flexible locking blocks. The second flexible locking blocks have the same structure as the first flexible locking blocks. The plurality of second flexible locking blocks are connected to the plurality of second locking grooves one by one, so that the joint sealing strip seals the joint between the first connecting edge and the second connecting edge.

[0009] In one embodiment, a first upright plate is provided on the outside of the first protective shell, and a second upright plate is provided on the outside of the second protective shell. The first connecting edge and the third connecting edge are rotatably connected, specifically the first upright plate and the second upright plate are rotatably connected. The elastic element is a torsion spring, which is sleeved on the rotating shaft of the first upright plate and the second upright plate.

[0010] In one embodiment, the first upright plate and the second upright plate are respectively provided with limiting grooves, which are used to limit the movement of the end of the torsion spring.

[0011] In one embodiment, both the second connecting edge and the fourth connecting edge are provided with arc-shaped grooves, which are used to operate and separate the second connecting edge and the fourth connecting edge.

[0012] In one embodiment, the transparent protective cylinder has a plurality of supporting ribs inside, which extend circumferentially along the transparent protective cylinder.

[0013] In one embodiment, the surface of the transparent protective cylinder is provided with several observation windows.

[0014] In one embodiment, the viewing window is a convex lens.

[0015] In one embodiment, there are three observation windows, which are arranged at intervals along the circumference of the transparent protective cylinder.

[0016] Compared with the prior art, the sealing and protective device for cable terminations according to an embodiment of the present invention has the following advantages: Using a transparent protective cylinder as the main structure of the sealing and protective device allows for observation of the internal structure without removing the cylinder due to its light-transmitting properties. If water vapor condenses on the cylinder wall or the cable terminals inside the transparent protective cylinder become loose, this can be quickly observed. Since observation can be performed without removing or opening the cylinder, there is no need to shut down the power supply, and it will not affect the power supply to other industries or residents.

[0017] Furthermore, by setting a first flange and a second flange at each end of the transparent protective cylinder, a first locking groove and a first flexible locking block are used to connect the upper end joint and the sealing base to the transparent protective cylinder. Since both the locking pin and the locking block of the first flexible locking block are flexible structures, with the locking pin having a smaller cross-sectional dimension than the first locking groove and the locking block having a larger cross-sectional dimension, the locking block deforms flexibly during installation, passes through the first locking groove, and locks onto it. This flexible connection allows the upper end joint and the sealing base to maintain a certain elastic seal even after multiple disassemblies and reassemblies with the corresponding flanges, thereby improving sealing performance. Moreover, because the transparent protective cylinder reduces the number of times it needs to be removed, the sealing performance is significantly improved.

[0018] Therefore, this invention improves the convenience of inspection and the sealing effect of cable termination heads through a transparent structure and a flexible assembly structure. Attached Figure Description

[0019] Figure 1 This is an exploded schematic diagram of a sealing and protective device for cable termination heads, as exemplarily shown in an embodiment of the present invention.

[0020] Figure 2 This is a partial cross-sectional view of a sealing and protective device for cable termination heads, as exemplarily illustrated in an embodiment of the present invention.

[0021] Figure 3 An exploded view of another perspective of a sealing and protective device for cable terminations, as exemplarily shown in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the first clamp and the second clamp of a sealing and protective device for cable termination heads, as exemplarily shown in an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the second protective casing of a sealing and protective device for cable termination heads, as exemplarily shown in an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the second protective casing of another sealing and protective device for cable termination heads, as exemplarily shown in an embodiment of the present invention.

[0025] Figure 7This is a schematic diagram of the structure of the first protective casing of a sealing and protective device for cable termination heads, as exemplarily shown in an embodiment of the present invention.

[0026] Figure label: 1. Transparent protective cylinder; 2. Upper end connector; 3. Sealing base; 4. Elastic element; 5. Elastic sealing body; 6. Joint sealing strip; 11. First flange; 12. Second flange; 13. First protective cylinder shell; 14. Second protective cylinder shell; 15. Second locking groove; 16. Rotating shaft; 17. Arc groove; 18. Support rib; 19. Observation window; 21. First flexible locking block; 22. Through hole; 61. Second flexible locking block; 121. First locking groove; 131. First connecting edge; 132. Second connecting edge; 133. First upright plate; 141. Third connecting edge; 142. Fourth connecting edge; 143. Second upright plate; 211. Locking post; 212. Locking block; 1331. Limiting groove. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various structures, these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from each other. For example, a first structure may also be referred to as a second structure without departing from the scope of this invention, and similarly, a second structure may also be referred to as a first structure. Depending on the context, the word "if" as used herein can be interpreted as "when," "when," or "in response to determination."

[0029] Cable terminations are key accessories for power cable lines. Installed at the end of the cable, they primarily serve to provide insulation, waterproofing, and dustproofing, while also enabling reliable connection between the cable and electrical equipment. They are crucial components for ensuring the safe and stable operation of power cables.

[0030] When maintenance personnel conduct routine inspections and hazard checks, they must first remove the external protective cover if they need to check for faults such as loose wiring terminals or condensation in the cavity. Since the terminal is energized during operation, a power outage must be performed before the inspection, which not only makes the inspection work inconvenient and inefficient, but also interrupts the normal power supply to the area.

[0031] Meanwhile, after repeated disassembly and reassembly, gaps can easily appear at the joints of the components, leading to a decrease in overall sealing performance. External moisture and impurities can then penetrate the interior, further exacerbating insulation degradation, terminal corrosion, and poor contact, creating a vicious cycle of failures.

[0032] In summary, improving the convenience of cable termination inspection and enhancing sealing performance have become pressing technical challenges that need to be addressed.

[0033] like Figure 1 As shown, a preferred embodiment of the present invention provides a sealing and protective device for cable termination heads, comprising: a transparent protective cylinder 1, an upper connector 2, and a sealing base 3. The two ends of the transparent protective cylinder 1 are respectively provided with a first flange 11 and a second flange 12, and the first flange 11 and the second flange 12 are respectively provided with a plurality of first locking grooves 121.

[0034] like Figure 2 As shown, the upper connector 2 and the sealing base 3 are provided with a plurality of first flexible locking blocks 21. The first flexible locking block 21 includes a locking post 211 and a locking block 212. The cross-sectional dimension of the locking post 211 is smaller than the cross-sectional dimension of the first locking groove 121, and the cross-sectional dimension of the locking block 212 is larger than the cross-sectional dimension of the first locking groove 121. The locking block 212 passes through the first locking groove 121 from one direction and is locked in the other direction of the first locking groove 121, so as to connect the upper connector 2 to the first flange 11 and the sealing base 3 to the second flange 12.

[0035] The upper connector 2 has a through hole 22 in the middle, which is used for the cable to pass through. The sealed space formed by the upper connector 2, the transparent protective cylinder 1 and the sealing base 3 is used to accommodate the cable terminal head.

[0036] It is understood that the shapes of the transparent protective cylinder 1, the upper connector 2, and the sealing base 3 shown in the accompanying drawings of this invention are merely exemplary. When a transparent material is used as the transparent protective cylinder 1, and the connection structure is the same as the flexible connection structure in this invention, they can all be regarded as technical solutions within the protection scope of this invention.

[0037] Using a transparent protective cylinder 1 as the main structure of the sealing and protective device, the internal structure can be observed without removing the protective cylinder due to its light-transmitting characteristics. If water vapor condenses on the cylinder wall or the cable terminals inside the transparent protective cylinder 1 become loose, it can be observed quickly. Since it can be observed without removing or opening, there is no need to shut down the power, and it will not affect the power supply to other industries or residents.

[0038] This invention does not impose specific limitations on the material of the transparent protective tube 1; any material that meets the intended use can be used. For example, PC (Polycarbonate), acrylic (PMMA, PolymethylMethacrylate), PETG (Polyethylene Terephthalate Glycol), rigid transparent PVC (Polyvinyl Chloride), soda-lime silicate glass tube, etc., can be selected.

[0039] Based on this, and considering outdoor weather resistance, further options include UV-resistant co-extruded weather-resistant PC, outdoor-specific UV-resistant cast acrylic, weather-resistant PETG, FEP (Fluorinated Ethylene Propylene), ETFE (Ethylene Tetrafluoroethylene), high borosilicate glass tubes, quartz glass tubes, etc.

[0040] In addition, by setting a first flange 11 and a second flange 12 at both ends of the transparent protective cylinder 1, a first locking groove 121 is used in conjunction with a first flexible locking block 21 to connect the upper end connector 2 and the sealing base 3 with the transparent protective cylinder 1.

[0041] Since both the locking post 211 and the locking block 212 of the first flexible locking block 21 are flexible structures, the cross-sectional dimension of the locking post 211 is smaller than that of the first locking groove 121, and the cross-sectional dimension of the locking block 212 is larger than that of the first locking groove 121. Therefore, when the locking block 212 is installed, it flexibly deforms and passes through the first locking groove 121 and gets stuck on the first locking groove 121. This flexible connection allows the upper end connector 2 and the sealing base 3 to maintain a certain elastic seal after multiple disassemblies with the corresponding flange, thereby improving the sealing performance. In addition, since the transparent protective cylinder 1 reduces the number of times the transparent protective cylinder 1 is removed, the sealing performance is greatly improved.

[0042] Therefore, this invention improves the convenience of inspection and the sealing effect of cable termination heads through a transparent structure and a flexible assembly structure.

[0043] It is understandable that the number of first flexible locking blocks 21 is equal to the number of first locking grooves 121, and the first flexible locking blocks 21 and the first locking grooves 121 are connected in a one-to-one correspondence.

[0044] Since the dimensions of the upper connector 2 and the sealing base 3 may be different, and the dimensions of the first flange 11 and the second flange 12 may also be different, there are no specific restrictions on the dimensions and quantity of the first locking groove 121 and the first flexible locking block 21. The quantities and dimensions in the attached drawings are only exemplary. The quantities and dimensions can be increased or decreased and the dimensions adjusted according to actual product requirements. The adjusted solution still falls within the protection scope of this invention.

[0045] The inventors discovered that in the actual assembly process, the integrated transparent protective tube 1 still has the problem of inconvenient installation, especially when the end size of the cable is large, it is difficult to enter the transparent protective tube 1, and this kind of sleeve installation is relatively time-consuming.

[0046] Therefore, such as Figure 4 As shown, in one embodiment, the transparent protective cylinder 1 includes a first protective shell 13 and a second protective shell 14. The first protective shell 13 includes a first connecting edge 131 and a second connecting edge 132, and the second protective shell 14 includes a third connecting edge 141 and a fourth connecting edge 142. The first connecting edge 131 and the third connecting edge 141 are rotatably connected. An elastic element 4 is provided between the first connecting edge 131 and the third connecting edge 141. The elastic element 4 is used to keep the first protective shell 13 and the second protective shell 14 closed.

[0047] Both the second connecting edge 132 and the fourth connecting edge 142 are covered with elastic sealing bodies 5. When the first protective shell 13 and the second protective shell 14 are rotated and closed, the elastic sealing bodies 5 on the second connecting edge 132 and the fourth connecting edge 142 come into contact. The upper end of the first protective shell 13 and the upper end of the second protective shell 14 form a first flange 11, and the lower end of the first protective shell 13 and the lower end of the second protective shell 14 form a second flange 12.

[0048] The first protective shell 13 and the second protective shell 14 are used as separate parts to replace the integral transparent protective shell 1. While retaining the transparent material, the second connecting edge 132 of the first protective shell 13 and the fourth connecting edge 142 of the second protective shell 14 can be opened because the first connecting edge 131 of the first protective shell 13 and the third connecting edge 141 of the second protective shell 14 are rotatably connected. This allows the cable to be directly embedded. Compared with the sleeve method, this method of opening and directly embedding is more direct and faster.

[0049] Since elastic sealing bodies 5 are provided on both the second connecting edge 132 and the fourth connecting edge 142, and elastic elements 4 are provided to continuously provide elastic force to keep them closed, the joint between the second connecting edge 132 and the fourth connecting edge 142 can have good sealing performance when closed, under the action of the elastic elements 4 and the elastic sealing bodies 5.

[0050] Under this structure, it can be understood that the first flange 11 can be the upper end of the first protective shell 13 and the upper end of the second protective shell 14, and the second flange 12 refers to the lower end of the first protective shell 13 and the lower end of the second protective shell 14, rather than a single component. Whether it is a split type or an integral type, the cooperation between the first flexible locking block 21 and the first locking groove 121 can achieve a sealed connection.

[0051] Accordingly, in a further embodiment, the upper connector 2 may be provided with a seam so that the cable can also be embedded in the upper connector 2. Since the upper connector 2 is connected to the first flange 11, and the first flange 11 is kept closed under the action of the elastic member 4, the upper connector 2 does not need to be provided with an additional structure to keep it closed.

[0052] In a further embodiment, the upper connector 2 can be rotated to misalign the seam of the upper connector 2 with the seams of the second connecting edge 132 and the fourth connecting edge 142. Since all the first flexible locking blocks 21 are identical, and all the first locking grooves 121 are also identical, connection can still be achieved after rotation. Due to the misalignment of the seams, the sealing performance can be improved. Understandably, the sealing base 3 can be designed with the same seam structure as the upper connector 2, and can also be connected in a staggered manner to improve sealing performance and reduce the intrusion of moisture and dust.

[0053] In one embodiment of the present invention, such as Figure 6 As shown, the first protective casing 13 near the first connecting edge 131 and the second protective casing 14 near the third connecting edge 141 are both provided with several second locking grooves 15, and the second locking grooves 15 have the same structure as the first locking grooves 121. Figure 5 and Figure 7 As shown, the sealing and protective device also includes a joint sealing strip 6, which is provided with a plurality of second flexible locking blocks 61. The second flexible locking blocks 61 have the same structure as the first flexible locking blocks 21. The plurality of second flexible locking blocks 61 are connected one-to-one with a plurality of second locking grooves 15, so that the joint sealing strip 6 seals the joint between the first connecting edge 131 and the second connecting edge 132.

[0054] By providing a second locking groove 15 near the first connecting edge 131 and the second connecting edge 132 and connecting it with a joint sealing strip 6, the sealing performance between the first connecting edge 131 and the second connecting edge 132 can be improved.

[0055] It is understandable that the second flexible locking block 61 adopts the same structure as the first flexible locking block 21, and therefore has the same connection effect.

[0056] The difference is that during installation, the two rows of second flexible locking blocks 61 can be installed in the two rows of second locking grooves 15 to realize the installation of the joint sealing strip 6. Since the first connecting edge 131 and the second connecting edge 132 are rotatably connected, but there is no large separation gap, the joint sealing strip 6 does not need to be removed when rotating. Therefore, the installation steps are simple, and the joint sealing strip 6 does not need to be removed when repeated disassembly and assembly are performed for subsequent maintenance.

[0057] Understandably, the length of the joint sealing strip 6 and the length of the elastic sealing body 5 are both greater than or equal to the length of the transparent protective cylinder 1, in order to reduce the size of the joint and improve the sealing performance.

[0058] In a further embodiment, the first protective shell 13 is provided with a first upright plate 133 on its outside, and the second protective shell 14 is provided with a second upright plate 143 on its outside. The first connecting edge 131 and the third connecting edge 141 are rotatably connected, specifically the first upright plate 133 and the second upright plate 143 are rotatably connected. The elastic element 4 is a torsion spring, which is sleeved on the rotating shaft 16 of the first upright plate 133 and the second upright plate 143.

[0059] The rotational connection of the first upright plate 133 and the second upright plate 143 is used to replace the rotational connection between the first protective shell 13 and the second protective shell 14. This provides an additional lever arm, allowing the first protective shell 13 and the second protective shell 14 to be quickly opened by pinching the first upright plate 133 and the second upright plate 143. This opens the second connecting edge 132 and the fourth connecting edge 142, enabling rapid assembly of the sealing and protective device.

[0060] Specifically, a torsion spring can be used as the specific type of elastic element 4. The torsion spring, in conjunction with the first upright plate 133 and the second upright plate 143, can achieve a function similar to a self-rebounding clip. When the first upright plate 133 and the second upright plate 143 are released, the spring force of the torsion spring can maintain the contact between the second connecting edge 132 and the fourth connecting edge 142, and the elastic sealing body 5 maintains the seal between the second connecting edge 132 and the fourth connecting edge 142. Since the joint sealing strip 6 is connected at the first connecting edge 131 and the third connecting edge 141, the joint sealing strip 6 can always maintain the seal between the first connecting edge 131 and the third connecting edge 141.

[0061] Furthermore, in a further embodiment of the present invention, the first upright plate 133 and the second upright plate 143 are respectively provided with limiting grooves 1331, which are used to limit the movement of the end of the torsion spring.

[0062] The limiting groove 1331 can accommodate the end of the torsion spring. The two ends of the torsion spring abut against the first vertical plate 133 and the second vertical plate 143 respectively. The limiting groove 1331 can restrict the movement of the end of the torsion spring, thereby improving the stability of the end of the torsion spring and preventing it from shifting after multiple pinching. Therefore, the elastic force is stable. Since the elastic force of the torsion spring is used to maintain the closure between the first protective shell 13 and the second protective shell 14, the closure is more stable, and the sealing effect is also more stable.

[0063] In addition, for ease of operation, in one embodiment of the present invention, both the second connecting edge 132 and the fourth connecting edge 142 are provided with arc-shaped grooves 17, which are used to operate and separate the second connecting edge 132 and the fourth connecting edge 142.

[0064] The two arc-shaped grooves 17 are located on the second connecting edge 132 and the fourth connecting edge 142, respectively. The arc-shaped grooves 17 allow fingers to be inserted to perform a prying operation. Combined with the structure of the first upright plate 133 and the second upright plate 143 on the other side (i.e., at the first connecting edge 131 and the third connecting edge 141), the force can be applied at both positions simultaneously, making it easier to open the first protective shell 13 and the second protective shell 14.

[0065] Understandably, since it is easier to open, a more elastic element 4 with a larger elastic modulus can be selected, such as a torsion spring with a larger elastic modulus, so that while achieving a strong seal, it can still be easily opened to achieve quick assembly.

[0066] The torsion spring is only an exemplary elastic element 4. In actual solutions, other elastic elements 4 can also be selected, such as tension springs. The tension spring can be directly connected to the inside of the transparent protective cylinder 1. For example, one end of the tension spring is connected to the inner wall of the first protective cylinder shell 13, and the other end of the tension spring is connected to the inner wall of the second protective cylinder shell 14, so as to achieve the closing of the first protective cylinder shell 13 and the second protective cylinder shell 14 by the elastic force.

[0067] Furthermore, in one embodiment of this application, the interior of the transparent protective cylinder 1 is provided with a plurality of support ribs 18, which extend circumferentially along the transparent protective cylinder 1.

[0068] The supporting ribs 18 extend circumferentially along the transparent protective cylinder 1, which can enhance the structural strength of the transparent protective cylinder 1 and make it more suitable for outdoor use.

[0069] It is understandable that the support ribs 18 can be set on the inner walls of the first protective shell 13 and the second protective shell 14, which can also play the role of improving the structural strength. After the transparent protective cylinder 1 is divided into the first protective shell 13 and the second protective shell 14, the structural strength will be reduced. Adding support ribs 18 can greatly improve the structural strength and adapt to the application requirements of the split structure.

[0070] The inventors discovered that although the transparent protective tube 1 was made of transparent material, its cylindrical shape caused visual distortion during observation. This did not affect the judgment of water vapor condensation, but when it was necessary to determine whether there was any looseness, a specific angle was required to observe the desired details.

[0071] Therefore, in one embodiment of the present invention, as Figure 3 As shown, the surface of the transparent protective cylinder 1 is provided with several observation windows 19.

[0072] Multiple observation windows 19 are provided on the surface of the transparent protective cylinder 1. The observation windows 19 can be of uniform thickness or have a high degree of uniformity in thickness, so the distortion is small. Moreover, the large number of observation windows 19 makes it easy to find a suitable observation angle.

[0073] Furthermore, in a further embodiment, the viewing window 19 is a convex lens.

[0074] Some cable terminations are located at high altitudes, and convex lenses are used as observation windows 19 to observe the internal structure from a distance, reducing the need for climbing. This makes construction safer and more convenient. By simply walking to the bottom of the cable termination, a magnified image of the connection can be observed through the convex lens, which saves a lot of working time and reduces the need for reporting of climbing operations, making the inspection process more streamlined.

[0075] In addition, in a preferred embodiment, there are three observation windows 19, which are arranged at intervals along the circumference of the transparent protective cylinder 1.

[0076] The three observation windows 19 are arranged at intervals along the circumference of the transparent protective cylinder 1, that is, there is a 120-degree interval between any two observation windows 19. This enables basic observation effect at low cost. No matter how it is rotated, there is always one observation window 19 located at a convenient viewing angle.

[0077] In addition, to reduce the damage to internal cables or terminals caused by the focusing of light from the convex lens, a light shield can be installed above the sealed protective device. The light shield can prevent direct sunlight from hitting the sealed protective device. On the one hand, it can reduce direct sunlight and make it difficult to generate focused light that causes high-temperature damage. On the other hand, blocking sunlight can reduce the aging rate of the sealed protective device, thereby improving the weather resistance of the entire sealed protective device.

[0078] In addition, using a dark-colored light shield can provide a dark background, making it easier to observe the internal structure of the transparent protective cylinder 1 through the observation window 19.

[0079] This invention provides a sealing and protection device for cable terminations, which includes a transparent protective cylinder 1, an upper connector 2, and a sealing base 3. The upper connector 2 and the sealing base 3 are flexibly connected through a split design and an elastic sealing body 5, which effectively improves the convenience of inspection and sealing performance.

[0080] The first protective shell 13 and the second protective shell 14 are rotated together to replace the traditional integral structure, enabling quick assembly and disassembly of the transparent protective shell 1 and reducing installation steps. The first connecting edge 131 and the third connecting edge 141 are kept closed by the elastic element 4, while the second connecting edge 132 and the fourth connecting edge 142 are provided with elastic sealing bodies 5 to enhance the sealing performance. At the same time, the rotational connection avoids opening and closing gaps.

[0081] The first flexible locking block 21 and the first locking groove 121 have a locking post 211 and a locking block 212 structure. The locking post 211 has a smaller cross-sectional size than the locking groove, and the locking block 212 achieves a seal through elastic deformation after being engaged, ensuring stable sealing performance. The observation window 19 adopts a convex lens design to achieve long-distance observation, reduce the need for climbing, and support the adaptability of a split structure.

[0082] In summary, this invention effectively improves the ease of disassembly and assembly and sealing performance of the terminal head through a split structure and flexible connection method, while optimizing the weather resistance and ease of operation of the overall structure.

[0083] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A sealing shield for a cable termination, characterized in that It includes a transparent protective tube (1), an upper connector (2), and a sealing base (3); The transparent protective cylinder (1) has a first flange (11) and a second flange (12) at its two ends respectively. The first flange (11) and the second flange (12) are respectively provided with a plurality of first locking grooves (121). The upper connector (2) and the sealing base (3) are provided with a plurality of first flexible locking blocks (21). The first flexible locking block (21) includes a locking post (211) and a locking block (212). The cross-sectional dimension of the locking post (211) is smaller than that of the first locking groove (121), and the cross-sectional dimension of the locking block (212) is larger than that of the first locking groove (121). The locking block (212) passes through the first locking groove (121) from one direction and locks in the other direction of the first locking groove (121) to connect the upper connector (2) to the first flange (11) and the sealing base (3) to the second flange (12). The upper connector (2) has a through hole (22) in the middle, which is used for the cable to pass through. The sealed space formed by the upper connector (2), the transparent protective tube (1) and the sealing base (3) is used to accommodate the cable terminal head.

2. The containment guard of claim 1, wherein, The transparent protective cylinder (1) includes a first protective shell (13) and a second protective shell (14). The first protective shell (13) includes a first connecting edge (131) and a second connecting edge (132). The second protective shell (14) includes a third connecting edge (141) and a fourth connecting edge (142). The first connecting edge (131) and the third connecting edge (141) are rotatably connected. An elastic element (4) is provided between the first connecting edge (131) and the third connecting edge (141), and the elastic element (4) is used to keep the first protective shell (13) and the second protective shell (14) closed; Both the second connecting edge (132) and the fourth connecting edge (142) are covered with elastic sealing bodies (5). When the first protective shell (13) and the second protective shell (14) are rotated and closed, the elastic sealing bodies (5) on the second connecting edge (132) and the elastic sealing bodies (5) on the fourth connecting edge (142) are in contact. The upper end of the first protective shell (13) and the upper end of the second protective shell (14) form the first flange (11), and the lower end of the first protective shell (13) and the lower end of the second protective shell (14) form the second flange (12).

3. The sealing and protective device according to claim 2, characterized in that, The first protective shell (13) near the first connecting edge (131) and the second protective shell (14) near the third connecting edge (141) are provided with a plurality of second locking grooves (15). The second locking grooves (15) have the same structure as the first locking grooves (121). The sealing and protective device also includes a joint sealing strip (6). The joint sealing strip (6) is provided with a plurality of second flexible locking blocks (61). The second flexible locking blocks (61) have the same structure as the first flexible locking blocks (21). The plurality of second flexible locking blocks (61) are connected one-to-one with the plurality of second locking grooves (15) so that the joint sealing strip (6) seals the joint between the first connecting edge (131) and the second connecting edge (132).

4. The sealing and protective device according to claim 2, characterized in that, The first protective shell (13) is provided with a first upright plate (133) on its outside, and the second protective shell (14) is provided with a second upright plate (143) on its outside. The first connecting edge (131) and the third connecting edge (141) are rotatably connected, specifically the first upright plate (133) and the second upright plate (143) are rotatably connected. The elastic element (4) is a torsion spring, which is sleeved on the rotating shaft (16) of the first upright plate (133) and the second upright plate (143).

5. The sealing and protective device according to claim 4, characterized in that, The first upright plate (133) and the second upright plate (143) are respectively provided with limiting grooves (1331), which are used to limit the movement of the end of the torsion spring.

6. The sealing and protective device according to claim 2, characterized in that, Both the second connecting edge (132) and the fourth connecting edge (142) are provided with arc-shaped grooves (17), which are used to operate and separate the second connecting edge (132) and the fourth connecting edge (142).

7. The sealing and protective device according to claim 1, characterized in that, The transparent protective cylinder (1) has several supporting ribs (18) inside, and the supporting ribs (18) extend along the circumference of the transparent protective cylinder (1).

8. The sealing and protective device according to claim 1, characterized in that, The surface of the transparent protective cylinder (1) is provided with several observation windows (19).

9. The sealing and protective device according to claim 8, characterized in that, The observation window (19) is a convex lens.

10. The sealing and protective device according to claim 8, characterized in that, The observation window (19) is provided in three parts, and the three observation windows (19) are arranged at intervals along the circumference of the transparent protective cylinder (1).

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