A junction box and conduit system

Abstract

This invention discloses a junction box, including a box body manufactured from a single molded part, the box body having an outlet and a connection port; and a cover for sealing the outlet, wherein the outlet is located on the end face of the box body, and the connection port is located on the side of the box body. Using the above technical solution, by adjusting the distance adjustment mechanism provided between the cover and the outlet, the distance between the cover and the outlet in the outlet axial direction can be adjusted, thereby achieving adjustment of the height position of the cover. This allows the height position of the cover to adapt to different building layer thicknesses, increasing the applicability of the junction box and facilitating operation and use by workers. This invention also discloses a pipeline system, including a cable tray and the aforementioned junction box.

Description

Technical Field

[0001] This invention relates to the field of power line layout technology, specifically to a junction box and pipeline system. Background Technology

[0002] In recent years, with the needs of national economic development, large-scale engineering construction projects have become increasingly common, such as subway construction, new and expanded airports, convention centers, museums, and large-scale intelligent buildings. These projects involve complex high-voltage and low-voltage electrical systems, requiring the laying of a large number of power cables, resulting in a huge demand for cable trays and junction boxes. During the laying of these cabling systems, a waterproof and reliable type of junction box and cable tray is needed.

[0003] For example, Chinese invention patent CN105071332B, entitled "Embedded Junction Box Structure and Elevation Construction Method for Embedded Junction Boxes," discloses an embedded junction box structure. This structure includes a bottomless junction box, comprising a junction box cover and a junction box frame enclosed by side panels. The junction box frame is embedded underground, and the junction box cover is placed over the top opening of the junction box frame. The bottom of the junction box frame is supported on the surface of a first pad layer. A conduit is embedded in the ground and extends from the bottom opening of the junction box frame into the space enclosed by the junction box frame. Since the conduit extends into the interior of the bottomless junction box from the bottom, the embedment depth of the conduit does not need to be considered during the construction of the embedded junction box structure of this invention, solving the problem that the embedment depth of side-opening junction boxes needs to match the embedment depth of the conduit during installation. However, the junction box of this structure mainly consists of a junction box cover and a junction box frame enclosed by side panels. The height of the cover cannot be adjusted, and the height of the cover cannot be adjusted according to the thickness of the building floor, which brings inconvenience to the use of the junction box.

[0004] Therefore, providing a junction box with an adjustable cover height position has become an urgent problem to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that the height of the top cover of the junction box cannot be adjusted in the prior art.

[0006] To address the aforementioned problems, this invention discloses a junction box, comprising: a box body having an outlet and a connection port; and a cover for closing the outlet, wherein the cover is connected to the outlet via a distance adjustment mechanism, the distance adjustment mechanism being used to adjust the distance between the cover and the outlet in the axial direction of the outlet.

[0007] By adopting the above technical solution, the distance between the cover and the outlet in the outlet axis can be adjusted by adjusting the distance adjustment mechanism set between the cover and the outlet, thereby adjusting the height position of the cover. This allows the height position of the cover to adapt to different building layer thicknesses, increasing the applicability of the junction box and facilitating operation and use by staff.

[0008] According to another specific embodiment of the present invention, the distance adjustment mechanism includes an adjustment part and a locking part. The cover is disposed on the adjustment part, the adjustment part is connected to the outlet, and can be adjusted axially to a predetermined position. When the adjustment part is in the predetermined position, the locking part locks the adjustment part.

[0009] According to another specific embodiment of the present invention, a sealing part is provided between the adjusting part and the outlet for sealing connection between the adjusting part and the outlet.

[0010] According to another specific embodiment of the present invention, the sealing part includes any one of a sealing ring, a corrugated spring sleeve, or a sealing layer, or...

[0011] The sealing part includes a sealing ring and a clamping ring. The clamping ring presses the sealing ring against the end of the outlet. The outlet is provided with an internal thread, and the adjusting part is provided with an external thread. The adjusting part is connected to the outlet through the external and internal threads. The adjusting part can abut against the sealing ring to achieve a sealing connection.

[0012] According to another specific embodiment of the present invention, the cover includes a first cover, which is disposed on the distance adjustment mechanism for closing the outlet.

[0013] According to another specific embodiment of the present invention, the first cover is provided with external threads, and the distance adjustment mechanism is provided with internal threads. The first cover and the distance adjustment mechanism are connected by the internal and external threads, or...

[0014] The first cover has a first locking part, and the distance adjustment mechanism has a second locking part. The first cover and the distance adjustment mechanism are connected through the first locking part and the second locking part, or...

[0015] The first cover is mounted on the distance adjustment mechanism by fasteners.

[0016] According to another specific embodiment of the present invention, the cover further includes a second cover, which is also disposed on the distance adjustment mechanism and can be covered by the first cover.

[0017] According to another specific embodiment of the present invention, the second cover is provided with a protrusion, and the distance adjustment mechanism is provided with a groove. The second cover and the distance adjustment mechanism are engaged through the protrusion and the groove, or...

[0018] The second cover is provided with external threads, and the distance adjustment mechanism is provided with internal threads. The second cover and the distance adjustment mechanism are connected via external and internal threads, or...

[0019] The second cover is connected to the distance adjustment mechanism by pressing and sealing.

[0020] According to another specific embodiment of the present invention, the second cover is provided with a wire outlet hole.

[0021] According to another specific embodiment of the present invention, the cover is provided with a docking part, and the cover can be docked with a disassembly and assembly tool through the docking part.

[0022] According to another specific embodiment of the present invention, the mating portion includes a mating groove and a central groove. The mating groove is disposed on the upper end face of the cover and extends radially to the edge of the cover. The mating grooves are spaced apart circumferentially along the cover. The central groove is disposed at the center of the upper end face of the cover.

[0023] The mating part includes mating protrusions or mating grooves.

[0024] According to another specific embodiment of the present invention, the junction box further includes a bottom plate, and the lower part of the box body is provided with a bottom opening. The bottom plate is sealed to the lower part of the box body to close the bottom opening.

[0025] According to another specific embodiment of the present invention, the edge of the base plate or the box body is provided with a filling groove, the edge of the box body or the base plate is inserted into the filling groove, and the two are sealed together by the sealant in the filling groove.

[0026] According to another specific embodiment of the present invention, a sealing strip is provided between the bottom plate and the box body, and the bottom plate is sealed to the sealing strip by fasteners.

[0027] According to another specific embodiment of the present invention, the edge of the base plate, or the lower edge of the box body, is provided with mounting lugs, and the mounting lugs are integrally formed with the base plate, or the box body.

[0028] According to another specific embodiment of the present invention, the outlet is located on the end face of the box body, the connection port is located on the side of the box body, the end face of the box body is a plane or an arc-shaped surface protruding outward from the box body, the outlet is a circular outlet or a rectangular outlet, and the cross-sectional shape of the box body includes polygonal, circular, elliptical and irregular shapes.

[0029] According to another specific embodiment of the present invention, the end face of the box includes an upper end face and a lower end face, the outlet is provided on the upper end face, the lower end face is provided with a lower outlet, the lower outlet is provided with a filter screen, and / or a sealing cover.

[0030] According to another specific embodiment of the present invention, a protective sleeve is provided inside the box, the protective sleeve is located at the outlet, and / or the connection port is located at the port inside the box.

[0031] According to another specific embodiment of the present invention, the box body is made of cast iron, alloy material, rigid plastic or resin material.

[0032] The present invention also discloses a pipeline system, including a cable tray and a junction box as described in any of the above embodiments. The connection between the cable tray and the junction box is sealed, and the cable tray and the junction box are buried together in the building body. The cover of the junction box can maintain a required distance from the outer plane of the building body under the adjustment of the distance adjustment mechanism. Attached Figure Description

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0034] Figure 1 This is a side view structural diagram of a junction box provided by the present invention;

[0035] Figure 2 This is a three-dimensional structural diagram of a wire box provided by the present invention;

[0036] Figure 3 This is a three-dimensional structural diagram of a wire box with another cover provided by the present invention;

[0037] Figure 4 This is a cross-sectional view and a partial enlarged structural schematic diagram of a wire box provided by the present invention;

[0038] Figure 5 This is a partial cross-sectional schematic diagram of a junction box provided by the present invention;

[0039] Figure 6 This is a three-dimensional structural diagram of a junction box after the cover has been removed, provided by the present invention.

[0040] Figure 7 This is a structural disassembly diagram of the junction box after the cover is removed, as provided by the present invention.

[0041] Figure 8 This is a structural disassembly diagram of a wire box with a lower outlet provided by the present invention;

[0042] Figure 9 This is a structural disassembly diagram of a junction box provided by the present invention;

[0043] Figure 10 This is a structural breakdown diagram of a wire box with a rectangular cover provided by the present invention. Detailed Implementation

[0044] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0045] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0046] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0047] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0048] like Figures 1 to 10 As shown, this invention discloses a junction box 1, comprising: a box body 10, having an outlet 100 and a connection port 101; and a cover 11 for closing the outlet 100, wherein the cover 11 is connected to the outlet 100 via a distance adjustment mechanism 14, the distance adjustment mechanism 14 being used to adjust the outlet 100 in the axial direction (e.g., ...) of the outlet 100. Figure 1 and Figure 4 Adjust the distance between the cover 11 and the outlet 100 (as shown in direction A).

[0049] In other words, the junction box 1 mainly consists of a box body 10, a cover 11, and a distance adjustment mechanism 14. The cover 11 is connected to the outlet 100 via the distance adjustment mechanism 14. Specifically, the distance adjustment mechanism 14 is located between the cover 11 and the outlet 100. The distance adjustment mechanism 14 is mounted on the outlet 100, and the cover 11 is mounted on the distance adjustment mechanism 14. The distance adjustment mechanism 14 is adjusted in the axial direction at the outlet (e.g., ...). Figure 1 and Figure 4 The position on the center (as shown in direction A) allows for adjustment of the distance between the cover 11 and the outlet 100, enabling the height of the cover 11 to adapt to different building layer thicknesses, increasing the applicability of the junction box 1, and facilitating operation and use by staff.

[0050] Specifically, after construction, the pre-embedded depth of junction boxes in different building floors may vary due to different locations and construction requirements. Existing technologies mainly use partitions or fillers (such as foam materials, waste newspapers, and plastic sheeting) placed at the openings to cover them, and then install a cover on top. This method is very crude, cannot effectively adjust the height of the cover, and cannot guarantee the seal between the cover and the junction box. In this invention, after construction, a distance adjustment mechanism 14 can be installed at the outlet 100. Operating the distance adjustment mechanism 14 allows it to be adjusted axially to a predetermined position in the outlet 100. Then, the cover 11 is installed on the distance adjustment mechanism 14, sealing the outlet 100. The distance adjustment mechanism 14 is also sealed to the outlet 100, which not only allows for adjustment of the height of the cover 11 but also ensures the sealing and waterproofing performance of the outlet 100.

[0051] By adopting the above technical solution, the distance between the cover and the outlet in the outlet axis can be adjusted by adjusting the distance adjustment mechanism set between the cover and the outlet, thereby adjusting the height position of the cover. This allows the height position of the cover to adapt to different building layer thicknesses, increasing the applicability of the junction box and facilitating operation and use by staff.

[0052] It should be noted that the present invention does not limit the specific structure of the distance adjustment mechanism, and it can be reasonably set according to actual needs, as long as the distance adjustment mechanism can adjust the height of the cover. For details, see [link to documentation]. Figure 4 and combined Figure 9 and Figure 10 As shown, in this invention, the distance adjustment mechanism 14 includes an adjustment part 140 and a locking part 141. The cover 11 is disposed on the adjustment part 140. The adjustment part 140 is connected to the outlet 100 and can be adjusted to a predetermined position in the axial direction. When the adjustment part 140 is in the predetermined position, the locking part 141 locks the adjustment part 140.

[0053] See Figure 4 and combined Figure 9 and Figure 10 As shown, in this embodiment, the distance adjustment mechanism 14 mainly consists of an adjustment part 140 and a locking part 141. The adjustment part 140 is disposed on the outlet 100 and is tunably connected to the outlet 100, and can be adjusted axially to a predetermined position. After adjustment, the locking part 141 can be operated to lock the adjustment part 140, so that the adjustment part 140 is held in the predetermined position, which is convenient to operate and easy to use. After the adjustment part 140 is adjusted and locked, the cover 11 is installed on the adjustment part 140, so that the cover 11 can meet the axial installation requirements. More specifically, in this embodiment, the adjusting part 140 has an annular structure that can cooperate with the annular outlet 100. The locking part 141 includes a locking hole and a locking screw (not shown in the figure) provided on the adjusting part 140. By operating the locking screw, the front end of the locking screw can be made to abut against or loosen the inner wall of the outlet 100, thereby locking and loosening the adjusting part 140. The entire distance adjusting mechanism 14 has a simple structure and is easy to operate. It can effectively adjust the height of the cover 11, so that the wire box 1 can adapt to building layers of different thicknesses.

[0054] It should be explained that the "predetermined position" in this invention refers to the axial adjustment of the adjusting part to a predetermined position after the construction of the building layer is completed, so that the upper end face of the cover and the outer surface of the building layer can maintain a required axial distance. Without considering errors, the required distance can be zero, that is, the upper end face of the cover and the outer surface of the building layer are flush and located in the same horizontal plane. The required distance can also be other values. For example, to place other decorations on the cover, the cover can be adjusted downwards using the distance adjustment mechanism so that the upper end face of the cover is below the outer surface of the building layer, forming a certain height difference, which facilitates the installation of decorations on the cover. In other embodiments, the predetermined position can also be other states and definitions. This invention does not limit this; it can be reasonably selected according to actual needs, as long as the distance adjustment mechanism can make the cover reach the predetermined position.

[0055] It should also be explained that the term "pipeline" in this article refers to all kinds of pipes, wires, cables, etc., which may include cables, optical fibers, wire harnesses with protective sheaths, and other structures.

[0056] Further, see Figures 1 to 10As shown, in this embodiment, the box body 10 is manufactured from a single piece, with no connecting gaps between the sides 103 and the end face 102. This eliminates the need for welding and splicing, achieving a good structural seal and improving the waterproofness of the junction box 1. Simultaneously, the box body 10 is provided with an outlet 100 and a connection port 101. The outlet 100 is located on the end face 102 of the box body 10, used for the exit of conduits and for personnel to access the conduits inside the junction box 1. The connection port 101 is located on the side 103 of the box body 10, allowing external conduits or cable trays to be sealed and connected to the connection port 101, forming a complete conduit system with the junction box 1. Furthermore, to facilitate the connection between the outlet 100 and the cover 11, see... Figures 1 to 10 As shown, in this embodiment, the outlet 100 extends upward from the end face 102 of the box body 10, which facilitates the assembly and disassembly of the adjustment part 140.

[0057] In this embodiment, the housing 10 is primarily made of alloy materials (such as aluminum alloy, zinc alloy, nickel alloy, etc.), preferably aluminum alloy. It is integrally formed through mold casting, which not only improves the sealing performance of the entire housing 10, but also provides conductivity, allowing connection to metal conduits or cable trays. This not only serves as a grounding wire for the pipeline system, simplifying its structure, but also shields the housing 10 from external electric or magnetic fields, preventing interference from these fields to the electrical components inside the housing 10, thus ensuring more stable and reliable operation of the entire pipeline system. In other embodiments, the housing can also be integrally formed from cast iron, hard plastic, or resin. This invention does not limit the specific materials used, as long as the housing is integrally formed and possesses excellent sealing performance.

[0058] Therefore, it can be seen that by using a box body processed from a single molded part, there are no connecting gaps between the sides and ends, and no welding or splicing is required. This can effectively achieve a seal from the structural point of view and improve the strength of the box body, giving the junction box good sealing and waterproof performance.

[0059] Further, see Figures 1 to 10As shown, in this embodiment, the end face 102 of the box body 10 is a plane or an arc-shaped surface protruding outward from the box body 10. Specifically, the end face 102 of the box body 10 includes an upper end face and a lower end face. Therefore, the upper end face of the box body 10 can be an arc-shaped surface protruding outward from the box body 10, or the lower end face of the box body 10 can be an arc-shaped surface protruding outward from the box body 10, or both the upper and lower end faces of the box body 10 can be arc-shaped surfaces protruding outward from the box body 10. Similarly, the outlet 100 can be located on the upper end face of the box body 10, or on the lower end face of the box body 10, or simultaneously on both the upper and lower end faces of the box body 10. The present invention does not limit this and can make reasonable arrangements according to actual needs. Meanwhile, the connection port 101 is located on the side 103 of the box body 10. It can be located on one side 103, or on two opposite sides 103 or two adjacent sides 103, or on three sides 103, or on four sides 103. The present invention does not limit this and can make reasonable arrangements according to actual needs.

[0060] For more details, see Figures 1 to 10 As shown, in this embodiment, the upper surface of the box 10 is an arc-shaped surface protruding outwards from the box 10, and the outlet 100 is located on the upper surface of the box 10. During use, the box 10 needs to be embedded in concrete. By setting the upper surface of the box 10 to an arc-shaped surface protruding outwards from the box 10, the pressure and stress applied by the concrete pressing on the upper surface can be effectively dispersed, allowing the box 10 to withstand greater pressure and stress, thus improving the strength of the box 10.

[0061] See Figure 8 As shown, in this embodiment, the upper end face of the box 10 is provided with an outlet 100, and the lower end face of the box 10 is provided with a lower outlet 106. That is, both the upper and lower end faces of the box 10 are provided with outlets. By providing a lower outlet 106 on the lower end face of the box 10, not only can upward wiring be achieved through the outlet 100, but downward wiring can also be achieved through the lower outlet 106. Furthermore, the lower outlet 106 can also achieve the effect of ventilation and heat dissipation. In addition, in case of accidents, if water or debris (such as concrete fragments) enters the box 10 or the conduit / trough, it can be discharged promptly through the lower outlet 106, minimizing the impact of water or debris on the internal pipelines of the box 10.

[0062] Furthermore, to prevent the lower outlet 106 from being exposed for extended periods, affecting aesthetics and performance, see [reference needed]. Figure 8As shown, in this embodiment, the lower outlet 106 is provided with a filter screen 107 and / or a sealing cover 108. That is, the lower outlet 106 may only be provided with a filter screen 107, or only with a sealing cover 108, or both a filter screen 107 and a sealing cover 108 may be provided. The filter screen 107 may be located at a position flush with the inner surface of the bottom of the box 10 at the lower outlet 106, or it may be located inside the lower outlet 106, or it may be sleeved on the lower outlet 106. The present invention does not limit this and can make reasonable settings according to actual needs, as long as it can block the lower outlet. It is used to block mosquitoes, rats and other debris from entering without affecting the exhaust and heat dissipation of the pipeline system.

[0063] See Figures 1 to 9 As shown, in this embodiment, the outlet 100 is circular. By setting the outlet 100 of the box 10 to a circular shape, it facilitates the installation and disassembly of the box 10 and the adjustment part 140, and also facilitates the processing of the box 10. Correspondingly, the distance adjustment mechanism 14 and the cover 11 are also circular structures, ensuring that the distance adjustment mechanism 14 can cooperate with the outlet 100 and that the cover 11 can be installed on the distance adjustment mechanism 14. See also Figure 10 As shown, in another embodiment of the present invention, the outlet 100 is rectangular. Corresponding to the shape of the outlet 100, the distance adjustment mechanism 14 and the cover 11 are also rectangular. The distance adjustment mechanism 14 and the outlet 100 are sealed together, and the cover 11 and the distance adjustment mechanism 14 are sealed together by fasteners (such as rivets, screws, buckles, etc.). By setting the outlet 100 of the box 10 as a rectangular outlet, the area of ​​the outlet 100 can be increased, allowing workers to operate the pipelines inside the cable box 1 through the outlet 100. In other embodiments, the outlet can also be other shapes, such as elliptical, triangular, or other polygonal or irregular shapes. The present invention does not limit these shapes and can make reasonable settings according to actual needs.

[0064] Additionally, since the box body 10 is manufactured as a single piece, burrs or sharp edges may remain at the junction between the outlet 100 and the connection port 101 and the inner wall of the box body 10 during demolding. These burrs or sharp edges could scratch pipelines passing through the box body 10 or personnel. To prevent pipelines or personnel from being scratched, please refer to... Figure 7 and Figure 8As shown, in this embodiment, a protective sleeve 13 is provided inside the box body 10. The protective sleeve 13 is located at the outlet 100, and / or the connection port 101 is located at the port inside the box body 10. That is, the protective sleeve 13 can be provided only inside the outlet 100, or only at the port where the connection port 101 is located inside the box body 10, or simultaneously at both the outlet 100 and the port where the connection port 101 is located inside the box body 10. This invention does not limit this and can be reasonably set according to actual needs. By providing the protective sleeve 13, the protective sleeve 13 covers the burrs or edges present at the junction, preventing workers or pipelines passing through the box body 10 from being scratched. Specifically, the protective sleeve 13 can be a nylon sleeve, silicone sleeve, rubber sleeve, or plastic sleeve, or it can be a metal sleeve, such as a copper sleeve, etc. This invention does not limit this and can be selected according to actual needs, as long as the protective sleeve can be fitted onto the port where the outlet or connection port is located inside the box body to prevent pipelines or workers from being scratched.

[0065] Further, see Figures 1 to 10 As shown, in this embodiment, the cross-sectional shape of the box 10 is rectangular. The cross-section of the box 10 is the section taken from the side 103 of the box 10 along a direction parallel to the end face of the box 10. The rectangular cross-section of the box 10 is widely used in various types of cable boxes 1, and is a relatively common type of cable box 1. It can be well applied to various occasions, such as the layout of pipelines inside shopping malls or subway lines, and has good versatility. In other embodiments, the cross-sectional shape of the box can also be other types, such as polygonal, circular, elliptical, and irregular shapes. The present invention does not limit this and can select according to actual needs.

[0066] Further, see Figures 1 to 10 As shown, in this embodiment, a sealing part 143 is provided between the adjusting part 140 and the outlet 100 to ensure a sealed connection between the adjusting part 140 and the outlet 100. By providing the sealing part 143, a sealed connection between the adjusting part 140 and the outlet 100 can be achieved, ensuring the sealing and waterproof performance between the adjusting part 140 and the outlet 100.

[0067] It should be noted that this invention does not limit the connection method and sealing method between the adjusting part and the outlet. Reasonable settings and selections can be made according to actual needs, as long as an adjustable sealing connection between the distance adjusting mechanism and the outlet is possible. For details, see [link to documentation]. Figure 4 and combined Figures 9 to 10As shown, in this embodiment, the sealing part 143 includes a sealing ring 145 and a pressing ring 144. The pressing ring 144 presses the sealing ring 145 against the end of the outlet 100. The outlet 100 is provided with an internal thread, and the adjusting part 140 is provided with an external thread. The adjusting part 140 is connected to the outlet 100 through the external thread and the internal thread. The adjusting part 140 can abut against the sealing ring 145 to achieve a sealed connection.

[0068] In other words, the sealing ring 145 is located at the end of the outlet 100, and a clamping ring 144 is provided on the top of the sealing ring 145. The clamping ring 144 can be fastened to the end of the outlet 100 by fasteners (such as screws, buckles, etc.) and clamps the sealing ring 145, so that the sealing ring 145 and the end of the outlet 100 fit tightly together. In this embodiment, the inner wall of the outlet 100 is provided with internal threads, and the outer side of the adjusting part 140 is provided with external threads. That is, the adjusting part 140 and the outlet 100 are connected by external and internal threads. During the process of the adjusting part 140 being screwed into the outlet 100, the outer wall of the adjusting part 140 can abut against the sealing ring 145, so that the sealing ring 145 and the adjusting part 140 fit tightly together, thereby sealing the outlet 100 and ensuring the sealing and waterproof performance between the adjusting part 140 and the outlet 100.

[0069] See Figure 5 As shown, in another embodiment of the present invention, the sealing part 143 is a corrugated spring sleeve 146, wherein the corrugated spring sleeve 146 is sleeved on the outer wall of the adjusting part 140, and mainly consists of a corrugated sleeve 147 and a spring 148 disposed inside the corrugated sleeve 147. During the adjustment of the adjusting part 140, the adjusting part 140 can always compress the spring 148 inside the corrugated sleeve 147. That is, the corrugated sleeve 147 can always maintain contact with the ends of the adjusting part 140 and the outlet 100 under the support of the spring 148, and seal against the ends of the adjusting part 140 and the outlet 100, thereby sealing the outlet 100 and ensuring the sealing and waterproof performance between the adjusting part 140 and the outlet 100. In other embodiments, the sealing part can also be other structures, which are not limited by the present invention. A reasonable selection can be made according to actual needs. For example, a sealing ring or a sealing layer can also be selected as the sealing part between the adjusting part and the outlet, as long as a sealed connection between the adjusting part and the outlet can be achieved.

[0070] It should be noted that this invention does not limit the specific structure and shape of the cover; it can be reasonably set and selected according to actual needs, as long as the cover can seal the outlet. For details, see [link to documentation]. Figures 1 to 4 and combined Figures 9 to 10As shown, in this embodiment, the cover 11 includes a first cover 110, which is disposed on the distance adjustment mechanism 14 and can close the outlet 100. After construction is completed, the distance adjustment mechanism 14 is installed at the outlet 100 and adjusted to a predetermined position, and then the first cover 110 is installed on the distance adjustment mechanism 14. Specifically, the first cover 110 is installed at the upper end of the adjustment part 140, and the outlet 100 of the box 10 is closed by closing the opening at the upper part of the adjustment part 140, thereby sealing the box 10.

[0071] Furthermore, due to different construction stages, the thickness of the concrete layer, and the subsequent construction of a leveling layer on top of the concrete layer, as well as the need to lay flooring and other building materials on the leveling layer, the height of the building layer relative to the exit is constantly changing. To prevent the exit from being covered, in this embodiment, the first cover 110 can be directly installed on the exit 100 of the box 10, and the height of the first cover 110 must also vary. Therefore, first covers 110 of different heights need to be provided. When the thickness of the building layer changes, the first cover 110 of different heights can be used to ensure that the upper end of the first cover 110 is higher than or at a relative height to the building layer. For example, at the factory or during the concrete pouring stage, since the concrete layer is not very thick, a cover of a different height can be used. Figure 3 The shorter first cover 110 shown can be used during the subsequent leveling layer construction. Figure 3 The first cover 110 shown can also be used after the final construction is completed. Figure 2 The upper surface shown is a flat cover, which prevents the outlet 100 and the first cover 110 from being covered by building materials, and also allows the cover 11 to close the outlet 100, ensuring that the outlet 100 can be used.

[0072] Further, see Figure 4 and combined Figure 9 and Figure 10As shown, in this embodiment, the first cover 110 is provided with a first snap-fit ​​portion 112, and the distance adjustment mechanism 14 is provided with a second snap-fit ​​portion 142. The first cover 110 and the distance adjustment mechanism 14 are connected through the first snap-fit ​​portion 112 and the second snap-fit ​​portion 142. Specifically, the first snap-fit ​​portion 112 is provided on the protrusion of the first cover 110, and the second snap-fit ​​portion 142 is provided in the groove on the upper inner wall of the adjustment portion 140. By aligning the first snap-fit ​​portion 112 on the first cover 110 with the second snap-fit ​​portion 142 on the adjustment portion 140 and tightening them, a tight connection between the first cover 110 and the adjustment portion 140 can be achieved. The connection between the first cover 110 and the adjustment portion 140 is achieved through snap-fit, which facilitates the installation and removal of the first cover 110 and also serves to seal the opening 100. To achieve a better sealing effect, a sealing gasket can also be provided on the upper part of the adjustment portion 140 to achieve a preliminary waterproofing effect.

[0073] In other embodiments, the first cover can also be connected to the adjustment part through other connection methods, such as the first cover having an internal thread (or an external thread) and the adjustment part having an external thread (or an internal thread), and the first cover and the adjustment part achieving a sealed connection through the thread, or the first cover being directly installed on the upper end of the adjustment part by fasteners (such as screws). The present invention does not limit this, and reasonable settings can be made according to actual needs, as long as the first cover and the adjustment part are sealed and the opening is closed.

[0074] For better sealing performance and waterproofing, see Figure 4 and combined Figures 9 to 10 As shown, in this embodiment, the cover 11 also includes a second cover 111, which is also disposed on the distance adjustment mechanism 14 and can be covered by the first cover 110. Specifically, the second cover 111 is disposed inside the adjustment part 140.

[0075] That is, after the second cover 111 is connected to the adjusting part 140, the first cover 110 can cover the second cover 111. After the first cover 110 achieves initial waterproofing, the second cover 111 and the adjusting part 140 are then sealed together to achieve double-layer sealing and waterproofing. See also... Figure 4As shown, a sealing groove 113 is provided on the outer wall of the second cover 111, and a sealing ring 114 is provided in the sealing groove 113, which further improves the sealing performance and waterproof effect of the cover 11 on the opening 100, ensuring that the outlet 100 can be closed by the cover 11. In this embodiment, the first cover 110 and the second cover 111 are two independent components. During installation, the second cover 111 is first connected to the adjusting part 140 so that the second cover 111 closes the outlet 100. Then, the first cover 110 is connected to the adjusting part 140 so that the first cover 110 further closes the outlet 100, achieving double sealing and waterproofing of the outlet 100, ensuring that the junction box 1 has good sealing performance and waterproof effect.

[0076] It should be noted that the present invention does not limit the connection method between the second cover and the adjusting part. A reasonable configuration can be made according to actual needs, as long as the second cover and the adjusting part are sealed together. For details, see [link to relevant documentation]. Figure 4 and combined Figures 9 to 10 As shown, in this embodiment, the second cover 111 has an external thread, and the adjusting part 140 has an internal thread. The second cover 111 and the adjusting part 140 are connected by threads. A sealing ring 114 is provided between the inner walls of the second cover 111 and the adjusting part 140. A sealing groove 113 is provided on the outer wall of the second cover 111, and the sealing ring 114 is provided within the sealing groove 113 to achieve a sealed connection between the two. During the process of screwing the second cover 111 into the adjusting part 140, the sealing groove 113 of the second cover 111 can abut against the sealing ring 114, so that the sealing ring 114 simultaneously seals against the inner wall of the adjusting part 140 and the second cover 111, thereby sealing the outlet 100 and improving the sealing effect of the cover 11. In this case, the second cover 111 can be fixedly connected to the first cover 110 or be a whole component. Rotating the first cover 110 will also rotate the second cover 111, so as to realize the synchronous installation of the first cover 110 and the second cover 111, which facilitates the installation and removal of the cover 11.

[0077] In another embodiment of the present invention, the second cover and the adjusting part of the distance adjusting mechanism are connected by a pressing seal. Specifically, neither the inner wall of the adjusting part nor the outer wall of the second cover has threads, but a sealing groove is formed on the outer side of the second cover. A sealing ring is fitted into the sealing groove, and then the second cover with the sealing ring is pressed into the adjusting part, so that the sealing ring on the second cover fits tightly against the inner wall of the adjusting part, achieving a sealed connection between the second cover and the adjusting part. In other embodiments, the second cover can also be connected to the adjusting part by other connection methods, such as the second cover having a protrusion and the adjusting part having a groove, and the second cover and the adjusting part being connected by the engagement of the protrusion and the groove. The present invention does not limit this, and reasonable settings can be made according to actual needs, as long as the second cover and the adjusting part are sealed together.

[0078] Furthermore, when the upper surface of the first cover is a flat, formal cover, the construction phase is complete, and the installation of electrical facilities is required. Power strips or indicator lights, or other electrical components, may be installed on the first cover. To facilitate the connection between these electrical components and the wiring inside the box, in this embodiment, a cable outlet hole can be opened on the second cover. The wiring inside the box can then be electrically connected to the electrical components on the first cover through this outlet hole. Simultaneously, to ensure the box's airtightness, a sealing sleeve can be fitted over the cable outlet hole to ensure the box remains sealed even when cables are exiting.

[0079] Furthermore, since junction box 1 is used throughout the entire construction cycle and needs to remain closed for extended periods, it is difficult to open and reseal cover 11 by hand when replacing it or threading wires. Disassembly and assembly tools are required for this operation. For easier coordination between cover 11 and the disassembly / assembly tools, please refer to... Figure 3 and combined Figure 9 and Figure 10 As shown, in this embodiment, the cover 11 is provided with a docking portion 115, through which the cover 11 can dock with a disassembly / assembly tool. The docking portion 115 can be provided on the first cover 110, the second cover 111, or both, facilitating the disassembly and installation of the cover 11. See also... Figure 3 and combined Figure 9 and Figure 10 As shown, in this embodiment, the mating portion 115 includes a mating protrusion 116 or a mating groove 117. Preferably, the mating portion 115 is provided on the second cover 111. Since the second cover 111 is located inside the adjustment portion 140, the second cover 111 can be easily disassembled and assembled. The mating portion 115 can be a mating protrusion 116 (e.g., ...). Figure 10 (as shown), or it can be a docking groove 117 (as shown). Figure 9 As shown in the figure, the present invention does not limit this, and can make reasonable settings according to actual needs, as long as it can facilitate the disassembly and assembly of the cover.

[0080] See Figure 3 As shown, in another embodiment of the present invention, the docking part 115 includes a docking groove 117 and a central groove 118. The docking groove 117 is disposed on the upper end surface of the cover 11 and extends radially to the edge of the cover 11. The docking grooves 117 are distributed circumferentially around the cover 11, and the central groove 118 is disposed at the center of the upper end surface of the cover 11.

[0081] In other words, the upper surface of the cover 11 is provided with a mating groove 117 and a central groove 118. The mating grooves 117 are distributed at intervals along the circumference of the cover 11, and the number of mating grooves 117 can be set according to actual needs and the structure of the disassembly and assembly tools. For details, see [link to documentation]. Figure 3 As shown, in another embodiment, three docking grooves 117 are provided on the cover 11. The three docking grooves 117 are evenly distributed on the upper surface of the cover 11. When disassembling or installing the cover 11, it can be operated by using disassembly and assembly tools such as a three-jaw chuck, which facilitates the disassembly and assembly of the cover 11. At the same time, the docking grooves 117 extend radially to the edge of the cover 11, which facilitates the removal of residual building materials (such as mud, sand, debris, etc.) on the cover 11, and ensures that the docking grooves 117 can be effectively docked with the disassembly and assembly tools.

[0082] See Figure 3 As shown, in another embodiment, the central groove 118 is located at the center of the upper end face of the cover 11. During the installation of the cover 11, it is necessary to keep the cover 11 horizontal. To this end, a level or other measuring device can be placed in the central groove 118 to ensure the accuracy of the measurement. After construction is completed, plastic markers (such as road signs, directional signs, etc.) or directional adhesive strips or other auxiliary decorative items can be filled into the central groove 118 to better utilize the function and purpose of the cover 11. In other embodiments, the mating part on the cover can also be of other shapes and structures. The present invention does not limit this and can make reasonable settings according to actual needs, as long as the mating part can effectively connect with the disassembly and assembly tools.

[0083] Additionally, see Figure 1 and Figure 2 and combined Figure 9 and Figure 10 As shown, in this embodiment, when the first cover 110 is the formal cover, in order to ensure that the upper surface of the first cover 110 is flat and clean, the first cover 110 may not have a docking part. In this case, the first cover 110 can be disassembled and installed by tools such as pneumatic suction cups.

[0084] Further, see Figures 1 to 10 As shown, in this embodiment, the junction box 1 further includes a base plate 12. The lower part of the box body 10 is provided with a bottom opening 105. The base plate 12 is sealed to the lower part of the box body 10 to close the bottom opening 105. That is, the lower part of the box body 10 has an open bottom opening 105. By providing the bottom opening 105, it is easier to mold and cast the box body 10. The base plate 12 is sealed to the lower part of the box body 10 to close the bottom opening 105.

[0085] For details, see Figure 4 and combined Figures 5 to 7As shown, in this embodiment, the edge of the base plate 12 or the box body 10 is provided with a filling groove 120. The edge of the box body 10 or the base plate 12 is inserted into the filling groove 120, and the two are sealed together by the sealant in the filling groove 120. That is, the box body 10 and the base plate 12 are sealed together by filling with sealant. The filling groove 120 can be set on the base plate 12 or the box body 10. The filling groove 120 is filled with sealant, and then the edge of the box body 10 or the base plate 12 is inserted into the filling groove 120, so that the edge of the box body 10 or the base plate 12 is completely immersed in the sealant, achieving a reliable connection and seal between the box body 10 and the base plate 12, ensuring the sealing and waterproof performance of the entire junction box 1. The sealant can be epoxy resin or silicone glue, etc., and the present invention does not limit it. It can be reasonably set according to actual needs, as long as it can achieve a reliable sealing connection between the box body and the base plate.

[0086] In other embodiments, the base plate and the box body can also be sealed together by other connection methods, such as a sealing strip between the base plate and the box body, or the base plate being sealed by fasteners pressing the sealing strip together with the base plate. The present invention does not limit this, and reasonable settings can be made according to actual needs, as long as a reliable sealing connection between the box body and the base plate can be achieved.

[0087] In addition, to ensure that junction box 1 is stably and reliably embedded in the building layer and to prevent it from shifting due to pressure from the concrete layer, see [reference needed]. Figures 1 to 10 As shown, in this embodiment, the edge of the base plate 12, or the lower edge of the box body 10, is provided with mounting lugs 104, which are integrally formed with the base plate 12 or the box body 10. That is, the mounting lugs 104 can be provided only on the edge of the base plate 12, only on the lower edge of the box body 10, or simultaneously on both the lower edge of the box body 10 and the edge of the base plate 12. This invention does not limit this and can be configured according to actual needs. During installation, the junction box 1 is fixed to the building's foundation by bolts or other fasteners in conjunction with the mounting lugs 104, effectively securing the junction box 1 and preventing it from moving due to pressure from the concrete layer.

[0088] The present invention also discloses a pipeline system, including a cable tray and a junction box 1 of any of the above embodiments. The cable tray and the junction box 1 are sealed together at the connection port 103. The cable tray and the junction box 1 are buried together in the building body. The cover 11 of the junction box 1 can maintain a required distance from the outer plane of the building body under the adjustment of the distance adjustment mechanism 14.

[0089] By adopting the above technical solution, the distance between the cover and the outlet in the outlet axis can be adjusted by adjusting the distance adjustment mechanism set between the cover and the outlet, thereby adjusting the height position of the cover. This allows the height position of the cover to adapt to different building layer thicknesses, increasing the applicability of the junction box and facilitating operation and use by staff.

[0090] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A junction box for power line wiring, characterized in that, include: The box body is equipped with an outlet and a connection port; A cover, used to close the outlet, wherein, The cover is connected to the outlet via a distance adjustment mechanism, which is used to adjust the distance between the cover and the outlet in the axial direction of the outlet. The distance adjustment mechanism includes an adjustment part, and a sealing part is provided between the adjustment part and the outlet for sealing connection between the adjustment part and the outlet. The outlet is provided with an internal thread, and the adjustment part is provided with an external thread. The adjustment part and the outlet are connected through the external thread and the internal thread. The sealing part includes a sealing ring and a clamping ring. The clamping ring presses the sealing ring against the end of the outlet. The adjusting part can abut against the sealing ring to achieve a sealed connection; or, The sealing part is a corrugated spring sleeve, which is sleeved on the outer wall of the adjusting part. The corrugated spring sleeve consists of a corrugated sleeve and a spring disposed inside the corrugated sleeve. During the adjustment of the adjusting part, the adjusting part can always compress the spring inside the corrugated sleeve. The corrugated sleeve can always abut against the ends of the adjusting part and the outlet under the support of the spring, and seal against the ends of the adjusting part and the outlet to achieve the closure of the outlet.

2. The junction box according to claim 1, characterized in that, The distance adjustment mechanism includes an adjustment part and a locking part. The cover is disposed on the adjustment part, and the adjustment part is connected to the outlet. It can be adjusted to a predetermined position in the axial direction. When the adjustment part is in the predetermined position, the locking part locks the adjustment part.

3. The junction box according to any one of claims 1-2, characterized in that, The cover includes a first cover, which is disposed on the distance adjustment mechanism and is used to close the outlet.

4. The junction box according to claim 3, characterized in that, The first cover is provided with an external thread, and the distance adjustment mechanism is provided with an internal thread. The first cover and the distance adjustment mechanism are connected through the external thread and the internal thread, or... The first cover is provided with a first locking part, and the distance adjustment mechanism is provided with a second locking part. The first cover and the distance adjustment mechanism are connected through the first locking part and the second locking part, or... The first cover is mounted on the distance adjustment mechanism by fasteners.

5. The junction box according to claim 3, characterized in that, The cover also includes a second cover, which is also disposed on the distance adjustment mechanism and can be covered by the first cover.

6. The junction box according to claim 5, characterized in that, The second cover has a protrusion, and the distance adjustment mechanism has a groove. The second cover and the distance adjustment mechanism are engaged through the protrusion and the groove, or... The second cover is provided with an external thread, and the distance adjustment mechanism is provided with an internal thread. The second cover and the distance adjustment mechanism are connected through the external thread and the internal thread, or... The second cover is connected to the distance adjustment mechanism by a press-sealed connection.

7. The junction box according to claim 5, characterized in that, The second cover is provided with a wire outlet hole.

8. The junction box according to claim 1, characterized in that, The cover is provided with a docking part, through which the cover can be connected with disassembly and assembly tools.

9. The junction box according to claim 8, characterized in that, The mating portion includes a mating groove and a central groove. The mating groove is located on the upper end face of the cover and extends radially to the edge of the cover. The mating grooves are spaced apart circumferentially along the cover. The central groove is located at the center of the upper end face of the cover. The docking part includes a docking protrusion or a docking groove.

10. The junction box according to claim 1, characterized in that, It also includes a base plate, and the lower part of the box body has a bottom opening. The base plate is sealed to the lower part of the box body to close the bottom opening.

11. The junction box according to claim 10, characterized in that, The base plate or the edge of the box body is provided with a filling groove. The box body or the edge of the box body is inserted into the filling groove, and the two are sealed together by the sealant in the filling groove. A sealing strip is provided between the base plate and the box body, and the base plate is sealed to the sealing strip by fasteners.

12. The junction box according to claim 10, characterized in that, The bottom plate or the lower edge of the box body is provided with mounting lugs, which are integrally formed with the bottom plate or the box body.

13. The junction box according to claim 1, characterized in that, The outlet is located on the end face of the box body, and the connection port is located on the side face of the box body. The end face of the box body is a plane or an arc-shaped surface protruding outward from the box body. The outlet is a circular outlet or a rectangular outlet. The cross-sectional shape of the box body includes polygonal, circular, elliptical, and irregular shapes. The end face of the box includes an upper end face and a lower end face. The outlet is located on the upper end face, and the lower end face has a lower outlet. The lower outlet is provided with a filter screen and / or a sealing cover.

14. The junction box according to claim 1, characterized in that, The box is equipped with a protective sleeve, which is located at the outlet, and / or the connection port is located at the port inside the box. The box body is made of cast iron, alloy materials, hard plastic or resin materials.

15. A pipeline system, characterized in that, The device includes a cable tray and a junction box as described in any one of claims 1-14, wherein the cable tray and the junction box are sealed together at their connection ports, the cable tray and the junction box are jointly embedded in the building body, and the cover of the junction box can maintain a required distance from the outer plane of the building body under the adjustment of a distance adjustment mechanism.

Images