Network engineering in-wall pc patch panel

Abstract

The application discloses a network engineering wall-mounted PC junction box and relates to the technical field of industrial gateways, aiming to solve the technical problems of inconvenient subsequent maintenance caused by too short network cable reservation in a traditional junction box and disorder and folding caused by too long reservation, and comprises a decorative cover plate, a mounting panel and a junction box body. A ring-shaped cover and a fixing cylinder are connected to the inner side wall of the junction box body. The fixing cylinder is arranged in the inner cavity of the ring-shaped cover, a limiting channel is formed between the fixing cylinder and the inner side wall of the ring-shaped cover, a spiral sliding channel is formed in the circumferential outer wall of the fixing cylinder, a rotating cylinder is rotatably arranged in the inner cavity of the fixing cylinder, a linear movable groove is formed in the side wall of the rotating cylinder, a moving block is slidably arranged in the inner cavity of the linear movable groove, and the moving block comprises a lever. The lever is movably arranged in the spiral sliding channel and extends into the limiting channel. The application has the advantages that the network cable is spirally wound around the outer side wall of the fixing cylinder, the network cable is arranged in order, and the network cable is prevented from being in a disorder and folding state in the inner cavity of the junction box body.

Description

Technical Field

[0001] This invention relates to the field of industrial gateway technology, and more specifically, to a wall-mounted PC junction box for network engineering. Background Technology

[0002] In network engineering construction and indoor cabling systems, in-wall PC junction boxes serve as the core node connecting indoor terminal equipment and external network lines. They are widely used in various environments such as residences, offices, and industrial control scenarios. Their main function is to realize the transfer, splitting, and protection of network cables, ensuring the stability and reliability of network signal transmission.

[0003] Traditional wall-mounted PC junction boxes offer advantages such as simple structure and convenient installation. However, they lack dedicated cable management and restraint mechanisms. After externally introduced network cables enter the box, a certain length of redundant cable must be reserved during installation to accommodate future connector replacements and cable trimming. These cables are often loosely stacked, occupying limited internal space and prone to bending and folding. Prolonged bending and folding of the cable sheath can cause mechanical damage to the internal copper core, leading to signal attenuation and reduced transmission speed. If the reserved cable length is too short, subsequent maintenance requires re-threading due to insufficient length, which is cumbersome and may damage the wall structure. Therefore, we propose a wall-mounted PC junction box for network engineering. Summary of the Invention

[0004] The purpose of this invention is to provide a wall-mounted PC junction box for network engineering, so as to solve the technical problems of inconvenient subsequent maintenance due to excessively short network cable allowance in traditional junction boxes, and messy and kinked due to excessively long allowance.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a wall-mounted PC junction box for network engineering, comprising a decorative cover, a mounting panel, and a junction box body. The decorative cover is snap-fitted with the side wall of the mounting panel, and the mounting panel is detachably connected to the side wall of the junction box body. An annular cover and a fixing cylinder are connected to the inner side wall of the junction box body. The fixing cylinder is arranged in the inner cavity of the annular cover and forms a limiting channel with the inner side wall of the annular cover. A spiral sliding channel is formed on the outer circumference of the fixing cylinder. A rotating cylinder is rotatably arranged in the inner cavity of the fixing cylinder. A linear movable channel is formed on the side wall of the rotating cylinder. The linear movable groove has a sliding block slidably arranged inside it. The sliding block includes a lever, which is movably arranged within the spiral sliding channel and extends into the limiting channel. When the rotating cylinder rotates forward, the lever can move along a spiral path within the spiral sliding channel to move the wires within the limiting channel, causing the wires to wrap around the outer circumference of the fixed cylinder. When the rotating cylinder rotates in the reverse direction, the spiral wires on the outer circumference of the fixed cylinder can be released for the wires to extend, be trimmed, and connect to the wiring module on the mounting panel.

[0006] Preferably, the annular cover sidewall is connected to multiple wire blocks, the inner cavity of the wire blocks is arranged with guide channels, the entrance of the guide channels is aligned with the wire inlet of the junction box, the exit of the guide channels is connected to the limiting channel, and the annular cover sidewall is also provided with multiple pull-out grooves, which are used to pull out the network cable extending from the exit of the guide channels from the limiting channel to provide operating space.

[0007] Preferably, both ends of the inner wall of the fixed cylinder are integrally formed with annular protrusions of the same structure, and both ends of the outer wall of the rotating cylinder are arranged with annular grooves of the same structure. The rotating cylinder forms a rotational fit with the annular protrusions through the annular grooves, so that the outer wall of the rotating cylinder and the inner wall of the fixed cylinder are in clearance fit.

[0008] Preferably, the linear movable groove is a straight groove structure, and a slide cylinder is connected to the inner wall of the linear movable groove. The inner cavity of the slide cylinder is a cylindrical structure, and multiple linear sliding grooves communicating with its inner cavity are opened on the side wall of the slide cylinder. The moving block also includes a slide seat, and a circular groove is opened on the side wall of the slide seat. The slide seat is movably fitted onto the outer circumference of the slide cylinder through the circular groove. A pressure cylinder is connected to the inner wall of the circular groove through multiple sliders. The sliders are slidably arranged in the linear sliding groove, and the pressure cylinders are spaced within the inner cavity of the slide cylinder.

[0009] Preferably, the lever consists of a fixed post and a roller. The fixed post is integrally formed on the top of the slide block, and the roller is movably sleeved on the outer circumference of the fixed post. The roller has a waist-shaped structure that is wider at the top and narrower at the bottom.

[0010] Preferably, an oil bag is inserted into the inner cavity of the slide cylinder. The oil bag includes a bag body, which is a corrugated tubular structure made of flexible material. The inner cavity of the bag body is filled with lubricating oil. One end of the bag body is connected to a pressure plate, and the other end is connected to a plug. The inner cavity of the plug is connected to a sealing block, which is a circular plate structure made of elastic rubber. The side wall of the sealing block has a cross-shaped slit.

[0011] Preferably, a plug is threadedly connected to the inlet of the slide cylinder cavity, and a push plate is connected to the side wall of the plug by a spring, and the push plate is in abutting contact with the side wall of the pressure plate.

[0012] Preferably, the side wall of the pressure cylinder is integrally formed with a conical plug, which is used to insert into the cross-shaped slit of the side wall of the sealing block and communicate with the inner cavity of the bag; the conical plug, the pressure cylinder, the slide and the inner cavity of the fixing column are connected to form an oil outlet channel.

[0013] Preferably, the side wall of the fixed column is provided with a plurality of oil outlet holes one, and the side wall of the roller is provided with a plurality of oil outlet holes two. The oil outlet holes one are used to discharge lubricating oil to lubricate the mating surfaces of the fixed column and the roller. The excess lubricating oil can be discharged through the oil outlet holes two and seep into the outer side wall of the roller.

[0014] Preferably, the plurality of oil outlet holes one and the plurality of oil outlet holes two are arranged in a ring array in the horizontal direction and are densely arranged from bottom to top in the vertical direction; the diameter of the oil outlet hole two is larger than the diameter of the oil outlet hole one, and the number of oil outlet holes two is greater than the number of oil outlet holes one in both the horizontal and vertical directions.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a fixed cylinder designed on the inner wall of the junction box. When installing the junction box within a wall, the network cable is first inserted into the inner cavity of the junction box, then pulled out to a straight line along the outer wall of the fixed cylinder. Rotating the rotating cylinder within the fixed cylinder causes a lever to move along a spiral path within the spiral sliding channel. During this movement, the lever moves the network cable, causing it to spirally wind around the outer wall of the fixed cylinder. This tidies up the network cable, preventing it from becoming messy and folded within the junction box, which can damage the cable over time. The spiral winding method also provides ample redundant cable length. When it's necessary to replace the network cable connector or adjust the wiring later, simply rotating the rotating cylinder in the opposite direction releases the cable wound on the fixed cylinder, allowing it to extend to a suitable length for trimming and rewiring. This effectively solves the problems of inconvenient maintenance due to excessively short cable length and messy, folded cable length caused by excessively long cable length in traditional junction boxes.

[0016] 2. This invention also incorporates an annular cover designed on the inner wall of the junction box. A fixing cylinder is arranged inside the annular cover, forming a limiting channel between the fixing cylinder and the inner wall of the annular cover. When the network cable extends into the inner cavity of the junction box and enters the limiting channel through the guide channel, the narrow limiting channel makes it difficult for the network cable to pass through and exit the junction box. The pull groove on the side wall of the annular cover provides convenient operating space for pulling out the network cable, allowing construction personnel to quickly pull the network cable out from the limiting channel and straighten it against the outer wall of the fixing cylinder. Subsequently, the network cable can be spirally wound around the outer wall of the fixing cylinder. The narrow space structure of the limiting channel can circumferentially limit the wound network cable from the outside, tightly constraining the radial movement range of the network cable, significantly reducing the degree of network cable rebound, and preventing the network cable from becoming loose or shifting due to excessive rebound after winding, ensuring that the network cable always maintains an orderly winding state.

[0017] 3. The present invention also designs the lever as a combination of a fixed post and a roller, with the roller having a waist-shaped structure that is wider at the top and narrower at the bottom, and is movably sleeved on the fixed post. This allows the roller to roll along with the movement of the net cable when the lever moves along a spiral path, converting the sliding friction between the roller and the net cable into rolling friction, which greatly reduces the wear on the outer sheath of the net cable. In addition, the waist-shaped structure can guide the net cable to gather and wind towards the side wall of the fixed cylinder, ensuring that the net cable adheres to the outer circumference of the fixed cylinder to form a regular spiral shape, and avoiding loose winding, deviation, or cross-over during the winding stage.

[0018] 4. This invention also incorporates an oil bag inserted into the inner cavity of the slide cylinder. When the pressure cylinder of the moving block slides with the slide, the conical plug is inserted into the cross-shaped slot of the sealing block, communicating with the inner cavity of the bag. As the slide continues to slide, it gradually squeezes the bag, allowing the lubricating oil inside the bag to be transported through the oil outlet channel and output through the first oil outlet to the mating surface of the fixed column and the roller, achieving dynamic lubrication, reducing the frictional resistance between the two, making it easier for the roller to roll when in contact with the wire, and reducing wear on the outer sheath of the wire. Meanwhile, excess lubricating oil seeps out through the second oil outlet to the outer wall of the roller, making the outer wall of the roller smooth, further reducing the frictional resistance between the roller and the wire. During the winding process, the pressure cylinder of the moving block slides with the slide, realizing automatic supply of lubricating oil, which not only enhances the rolling performance of the roller, but also improves the slippage of the roller sidewall, further improving the protection of the wire sheath during the winding process.

[0019] 5. This invention arranges multiple oil outlet holes one and multiple oil outlet holes two in a dense vertical arrangement from bottom to top. Furthermore, the number of oil outlet holes two exceeds the number of oil outlet holes one in both the horizontal and vertical directions. This concentrates the lubricating oil that seeps into the outer wall of the roller at the waist-shaped structure at the top of the roller, ensuring sufficient lubrication in the friction area between the roller and the mesh, effectively reducing frictional resistance during contact and minimizing wear on the mesh sheath. Combined with the larger diameter and greater number of oil outlet holes two, it can quickly drain excess lubricating oil seeping from oil outlet hole one, preventing its accumulation on the mating surface between the fixed column and the roller, thus preventing motion resistance. It also allows the lubricating oil to fully and evenly cover the entire outer wall of the roller, particularly suited to the contact characteristics of the waist-shaped structure of the roller. This ensures that any area in contact between the mesh and the roller receives lubrication protection, avoiding the problem of localized lubrication loss caused by a large outer wall area of ​​the roller and uneven distribution of oil outlet holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal cavity structure of the junction box of the present invention.

[0022] Figure 3 This is a schematic diagram of the annular cover structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the fixed cylinder and rotating cylinder structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the present invention.

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the rotating cylinder of the present invention.

[0026] Figure 7 This is a schematic diagram of the disassembled structure of the moving block and the slide cylinder of the present invention.

[0027] Figure 8 This is a cross-sectional view of the moving block and slide of the present invention.

[0028] Figure 9 This is a schematic diagram of the disassembled structure of the fixed column and roller of the present invention.

[0029] Figure 10 This is a schematic diagram of the oil bag structure of the present invention.

[0030] Figure 11 This is a cross-sectional structural diagram of the fixed column and roller of the present invention.

[0031] Figure 12 This is a cross-sectional schematic diagram showing one usage state of the present invention.

[0032] Figure 13 This is a cross-sectional structural diagram of another usage state of the present invention.

[0033] Explanation of the labels in the diagram: 1. Decorative cover plate; 2. Mounting panel; 3. Junction box body; 4. Annular cover; 5. Fixing cylinder; 6. Rotating cylinder; 7. Moving block; 8. Network cable; 401. Conductor block; 402. Guide channel; 403. Pull wire groove; 501. Spiral sliding channel; 502. Annular protrusion; 601. Linear movable groove; 602. Annular chute; 603. Slide cylinder; 604. Linear chute; 605. Oil bag; 6051. Bag body; 6052. Pressure plate; 6053. Plug; 6054. Sealing block; 606. Plug; 607. Spring; 608. Push plate; 701, lever; 7011, fixed post; 7012, roller; 7013, oil outlet hole one; 7014, oil outlet hole two; 702, slide block; 703, circular groove; 704, slider; 705, pressure cylinder; 7051, conical plug; 706, oil outlet channel. Detailed Implementation

[0034] like Figures 1 to 13 As shown, the present invention relates to a wall-mounted PC junction box for network engineering, comprising a decorative cover plate 1, a mounting panel 2, and a junction box body 3. The decorative cover plate 1 is snapped into the side wall of the mounting panel 2, and the mounting panel 2 and the junction box body 3 are detachably connected by screws. During construction, the junction box body 3 is embedded in a groove opened in the side wall of the wall and fixed by cement mortar. The side wall of the junction box body 3 is connected with multiple protective plates that can be knocked off. After the protective plates are knocked off, they form a cable tube. The cable tube is used for inserting external conduits, so that the network cable 8 in the inner cavity of the external conduit extends into the inner cavity of the junction box body 3.

[0035] The junction box 3 has an annular cover 4 and a fixing cylinder 5 connected to its inner wall. The fixing cylinder 5 is located inside the annular cover 4 and forms a limiting channel with the inner wall of the annular cover 4. When the network cable 8 is spirally wound around the outer wall of the fixing cylinder 5, the limiting channel can limit the degree of rebound of the network cable 8, preventing the network cable 8 from becoming loose due to excessive rebound after winding. A spiral sliding channel 501 is provided on the outer circumference of the fixing cylinder 5. A rotating cylinder 6 is rotatably arranged inside the fixing cylinder 5. A linear movable groove 601 is provided on the side wall of the rotating cylinder 6. A sliding groove 601 is slidably arranged inside the linear movable groove 601. The movable block 7 includes a lever 701, which is movably arranged within the spiral sliding channel 501 and extends into the limiting channel. When the rotating cylinder 6 rotates in the forward direction, the lever 701 can move along the spiral path within the spiral sliding channel 501 to move the wire 8 within the limiting channel, causing the wire 8 to wrap around the outer circumference of the fixed cylinder 5. When the rotating cylinder 6 rotates in the reverse direction, the spiral wire 8 on the outer circumference of the fixed cylinder 5 can be released, allowing the wire 8 to extend for trimming and connection to the wiring module on the mounting panel 2.

[0036] This invention incorporates a fixing cylinder 5 on the inner wall of the junction box 3. When installing the junction box 3 within a wall, simply insert the network cable 8 into the inner cavity of the junction box 3, then pull the network cable 8 along the outer wall of the fixing cylinder 5 to form a straight line, as shown in the attached drawings. Figure 12 As shown, by rotating the rotating cylinder 6 inside the fixed cylinder 5, the lever 701 moves along the spiral sliding channel 501 in a spiral path. During the movement of the lever 701, the network cable 8 can be moved, causing the network cable 8 to form a spiral winding state around the outer wall of the fixed cylinder 5. This achieves the organization of the network cable 8 and avoids the network cable 8 being in a messy and folded state inside the junction box 3. Long-term folding can easily damage the network cable 8. At the same time, the spiral winding method provides sufficient redundant cable length. When it is necessary to replace the network cable connector or adjust the wiring later, it is only necessary to rotate the rotating cylinder 6 in the opposite direction to release the network cable 8 wound on the fixed cylinder 5, allowing it to extend to a suitable length for trimming and rewiring. This effectively solves the problems of inconvenient subsequent maintenance caused by the network cable being too short in traditional junction boxes and messy and folded caused by the network cable being too long.

[0037] In an embodiment of the present invention, a plurality of wire blocks 401 are connected to the side wall of the annular cover 4. A guide channel 402 is arranged in the inner cavity of the wire block 401. The entrance of the guide channel 402 is aligned with the inlet of the junction box 3, and the outlet of the guide channel 402 is connected to the limiting channel. The guide channel 402 can accurately guide the network cable 8 entering the junction box 3, ensuring that the network cable 8 smoothly enters the limiting channel. A plurality of pull grooves 403 are also provided on the side wall of the annular cover 4. The pull grooves 403 are used to pull the network cable 8 extending from the outlet of the guide channel 402 out of the limiting channel to provide operating space.

[0038] The present invention also incorporates an annular cover 4 designed on the inner wall of the junction box 3, with a fixing cylinder 5 arranged inside the annular cover 4, forming a limiting channel between the fixing cylinder 5 and the inner wall of the annular cover 4. When the network cable 8 extends into the inner cavity of the junction box 3 and enters the limiting channel through the guide channel 402, the network cable 8 is difficult to pass through the limiting channel to exit the junction box 3 due to the narrowness of the limiting channel. The pull groove 403 on the side wall of the annular cover 4 provides convenient operating space for pulling out the network cable 8, making it easy for construction personnel to quickly pull the network cable 8 out of the limiting channel, forming a straightened state that fits against the outer wall of the fixing cylinder 5. Subsequently, it is convenient for the network cable 8 to form a spiral winding around the outer wall of the fixing cylinder 5. The narrow space structure of the limiting channel can form a circumferential limit on the wound network cable 8 from the outside, tightly restricting the radial movement range of the network cable 8, greatly reducing the degree of springback of the network cable 8, and preventing the network cable 8 from becoming loose or shifting due to a large degree of springback after winding, ensuring that the network cable 8 always maintains an orderly winding state.

[0039] In an embodiment of the present invention, both ends of the inner circumference of the fixed cylinder 5 are integrally formed with annular protrusions 502 of the same structure, and both ends of the outer circumference of the rotating cylinder 6 are arranged with annular grooves 602 of the same structure. The rotating cylinder 6 forms a rotational fit with the annular protrusions 502 through the annular grooves 602, so that the outer wall of the rotating cylinder 6 and the inner wall of the fixed cylinder 5 are in clearance fit. The rotational fit formed by the annular protrusions 502 on the inner wall of the fixed cylinder 5 and the annular grooves 602 on the outer wall of the rotating cylinder 6 not only ensures the stability of the rotating cylinder 6 when rotating inside the cavity of the fixed cylinder 5, but also reduces the frictional resistance between the two through clearance fit, making the rotation operation smoother and less labor-intensive, avoiding rotation jamming due to improper fit clearance, which would affect the winding and release effect of the network cable. At the same time, the distribution of the annular protrusions 502 at both ends of the inner circumference of the fixed cylinder 5 forms an axial limit on the fixed cylinder 5, which compensates for the structural weakening caused by the opening of the spiral sliding channel 501 on the side wall of the fixed cylinder 5.

[0040] In an embodiment of the present invention, the linear movable groove 601 has a straight groove structure, and a slide cylinder 603 is connected to the inner wall of the linear movable groove 601. The inner cavity of the slide cylinder 603 has a cylindrical structure, and multiple linear sliding grooves 604 communicating with its inner cavity are opened on the side wall of the slide cylinder 603. The movable block 7 also includes a slide seat 702, and a circular groove 703 is opened on the side wall of the slide seat 702. The slide seat 702 is movably fitted onto the outer circumferential wall of the slide cylinder 603 through the circular groove 703 to form a sliding fit. A pressure cylinder 705 is connected to the inner wall of the circular groove 703 through multiple sliders 704. The sliders 704 are slidably arranged on the linear movable groove 601. Within the linear groove 604, the sliding engagement between the slider 704 and the linear groove 604 ensures that the entire moving block 7 will not rotate or shift when sliding linearly on the slide cylinder 603. The pressure cylinder 705 is positioned within the inner cavity of the slide cylinder 603. The lever 701 consists of a fixed post 7011 and a roller 7012. The fixed post 7011 is integrally formed on the top of the slide block 702. The roller 7012 is movably fitted onto the outer circumference of the fixed post 7011 and can rotate on the outer circumference of the fixed post 7011. The roller 7012 has a waist-shaped structure that is wider at the top and narrower at the bottom.

[0041] This invention rotates the rotating cylinder 6, causing the lever 701 to move in a circular motion synchronously with the rotating cylinder 6. On the other hand, it is guided by the spiral trajectory of the spiral sliding channel 501 and subjected to an axial force, which in turn drives the moving block 7 to slide linearly along the sliding cylinder 603. Finally, the two motion trajectories are superimposed, causing the lever 701 to form a spiral path motion along the extension direction of the spiral sliding channel 501, thereby achieving smooth turning of the network cable 8.

[0042] The present invention further designs the lever 701 as a structure consisting of a fixed post 7011 and a roller 7012, with the roller 7012 having a waist-shaped structure that is wider at the top and narrower at the bottom, and is movably sleeved on the fixed post 7011. This allows the roller 7012 to roll along with the movement of the net cable 8 when the lever 701 moves the net cable 8 in a spiral path, converting the sliding friction between the roller 7012 and the net cable 8 into rolling friction, which greatly reduces the wear on the outer sheath of the net cable 8. In addition, the waist-shaped structure can guide the net cable 8 to gather and wind towards the side wall of the fixed cylinder 5, ensuring that the net cable 8 adheres to the outer circumference of the fixed cylinder 5 to form a regular spiral shape, and avoiding loose winding, deviation, or cross-over during the winding stage.

[0043] In another embodiment of the present invention, an oil bag 605 is inserted into the inner cavity of the slide cylinder 603. The oil bag 605 includes a bag body 6051, which is a corrugated tubular structure made of flexible material. The inner cavity of the bag body 6051 is filled with lubricating oil. One end of the bag body 6051 is connected to a pressure plate 6052, and the other end is connected to a plug 6053. A sealing block 6054 is connected to the inner cavity of the plug 6053. The sealing block 6054 is a circular plate structure made of elastic rubber, and a cross-shaped slit is opened on the side wall of the sealing block 6054. A plug 606 is threadedly connected to the inlet of the inner cavity of the slide cylinder 603. A push plate 608 is connected to the side wall of the plug 606 through a spring 607. The push plate 608 and the side wall of the pressure plate 6052 are connected to each other. The pressure cylinder 705 has a cone-shaped plug 7051 integrally formed on its side wall. The cone-shaped plug 7051 is used to insert into the cross-shaped slit on the side wall of the sealing block 6054 and communicate with the inner cavity of the bag body 6051. The cone-shaped plug 7051, the pressure cylinder 705, the slide 702 and the inner cavity of the fixing column 7011 are connected to form an oil outlet channel 706. The side wall of the fixing column 7011 is provided with multiple oil outlet holes 7013, and the side wall of the roller 7012 is provided with multiple oil outlet holes 7014. The oil outlet holes 7013 are used to discharge lubricating oil to lubricate the mating surfaces of the fixing column 7011 and the roller 7012. The excess lubricating oil can be discharged through the oil outlet holes 7014 and seep into the outer side wall of the roller 7012.

[0044] In this invention, the oil bag 605 inside the slide cylinder 603 is always kept in a pressed state under the action of the spring 607 and the push plate 608. When the pressure cylinder 705 of the moving block 7 slides with the slide seat 702, the conical plug 7051 is inserted into the cross-shaped slot of the sealing block 6054 and communicates with the inner cavity of the bag body 6051. As the slide seat 702 continues to slide, it gradually squeezes the bag body 6051, so that the lubricating oil in the bag body 6051 is transported through the oil outlet channel 706 and output through the oil outlet hole 7013 to the mating surface of the fixed column 7011 and the roller 7012, realizing dynamic lubrication and reducing the friction between the two. The friction resistance makes it easier for the roller 7012 to roll when it comes into contact with the wire 8, reducing wear on the outer sheath of the wire 8. The excess lubricating oil seeps out through the oil outlet 7014 to the outer wall of the roller 7012, making the outer wall of the roller 7012 smooth and further reducing the friction resistance between the roller 7012 and the wire 8. During the winding process, the pressure cylinder 705 of the moving block 7 slides with the slide block 702, realizing the automatic supply of lubricating oil, which not only enhances the rolling performance of the roller 7012, but also improves the smoothness of the side wall of the roller 7012, further improving the protection of the outer sheath of the wire 8 during the winding operation.

[0045] In another embodiment of the present invention, the plurality of oil outlet holes 7013 and the plurality of oil outlet holes 7014 are arranged in a circular array in the horizontal direction, which enables the lubricating oil to be evenly distributed from the mating surface of the fixed column 7011 and the roller 7012 and the outer circumferential wall of the roller 7012, avoiding local lubrication dead zones. The plurality of oil outlet holes 7013 and the plurality of oil outlet holes 7014 are densely arranged from bottom to top in the vertical direction, which is suitable for ensuring sufficient lubrication of the friction area between the roller 7012 and the mesh 8 during the spiral motion of the lever 701. The diameter of the oil outlet hole 7014 is larger than that of the oil outlet hole 7013, and... In both the horizontal and vertical directions, the number of oil outlet holes 2 7014 is greater than the number of oil outlet holes 1 7013. This number of holes allows the oil outlet holes 2 7014 to quickly discharge excess lubricating oil seeping from the oil outlet holes 1 7013, preventing it from accumulating on the mating surface of the fixed column 7011 and the roller 7012 and causing resistance. It also allows the lubricating oil to fully penetrate into the outer wall of the roller 7012 and adhere evenly, thus providing auxiliary lubrication for the mesh wire 8. This prevents the outer wall area of ​​the roller 7012 from being too large. If the number of oil outlet holes 2 7014 is the same as the number of oil outlet holes 1 7013, it would be difficult to evenly cover the outer wall of the roller 7012 with lubricating oil.

[0046] This invention arranges multiple oil outlet holes 7013 and multiple oil outlet holes 7014 in a dense, vertically arranged pattern from bottom to top. Furthermore, the number of oil outlet holes 7014 exceeds the number of oil outlet holes 7013 in both the horizontal and vertical directions. This concentrates the lubricating oil that penetrates the outer wall of the roller 7012 at the waist-shaped structure at the upper end of the roller 7012, ensuring sufficient lubrication for the friction area between the roller 7012 and the mesh 8. This effectively reduces frictional resistance during contact and minimizes wear on the outer sheath of the mesh 8. The larger diameter and greater number of holes in Hole 2 7014 not only allow excess lubricating oil seeping from Oil Hole 1 7013 to be quickly drained, preventing it from accumulating on the mating surface of the fixed column 7011 and the roller 7012 and forming motion resistance, but also allow the lubricating oil to fully and evenly cover the entire outer wall of the roller 7012. It is especially suitable for the contact characteristics of the waist-shaped structure of the roller 7012, ensuring that any area in contact between the mesh 8 and the roller 7012 is lubricated and protected, avoiding the problem of local lubrication loss caused by the large outer wall area of ​​the roller 7012 and the uneven distribution of oil outlet holes.

[0047] Working Principle: This embodiment provides a method for using a wall-mounted PC junction box for network engineering. In use, the junction box body 3 is first embedded in a pre-reserved groove in the wall and fixed. The corresponding protective plate on the side wall of the junction box body 3 is knocked off to form a cable guide tube. After the external conduit is connected to the cable guide tube, the network cable 8 in the conduit passes through and extends into the inner cavity of the junction box body 3, entering the limiting channel between the annular cover 4 and the fixed cylinder 5 through the guide channel 402 of the conductor block 401. The construction worker pulls the network cable 8 out of the limiting channel through the pull groove 403 on the side wall of the annular cover 4, making it fit against the outer circumference of the fixed cylinder 5 and straighten it. Then, the rotating cylinder 6 is rotated forward, causing the lever 701 of the moving block 7 to move along the spiral sliding channel 501 of the fixed cylinder 5 in a spiral path. The roller 7012 of the lever 701 contacts and rolls with the network cable 8, converting sliding friction into rolling friction. Simultaneously, the waist-shaped structure guides the network cable. 8 is tightly wound around the outer wall of the fixed cylinder 5, and the limiting channel constrains the wire 8 from the outside to prevent it from springing back and loosening. During the winding process, the slide block 702 of the moving block 7 slides along the slide cylinder 603, and the cone-shaped plug 7051 of the pressure cylinder 705 is inserted into the sealing block 6054 of the oil bag 605. The bag body 6051 is squeezed so that the lubricating oil is delivered to the mating surface of the fixed column 7011 and the roller 7012 through the oil outlet channel 706 and the first oil outlet hole 7013. The excess lubricating oil seeps out through the second oil outlet hole 7014 to the outer wall of the roller 7012, further reducing the friction with the wire 8. When it is necessary to replace the wire connector or adjust the wiring, the rotating cylinder 6 is rotated in the opposite direction, and the lever 701 moves in the opposite spiral motion to release the wound wire 8. After pulling out the appropriate length, it is trimmed. Then the wire 8 is connected to the wiring module on the mounting panel 2. Finally, the mounting panel 2 is fixed to the junction box 3, and the decorative cover 1 is fastened to complete the installation.

[0048] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A wall-mounted PC junction box for network engineering, characterized in that, It includes a decorative cover plate (1), a mounting panel (2) and a junction box (3). The decorative cover plate (1) is snapped into the side wall of the mounting panel (2), and the mounting panel (2) is detachably connected to the side wall of the junction box (3). The junction box body (3) has an annular cover (4) and a fixing cylinder (5) connected to its inner side wall. The fixed cylinder (5) is arranged in the inner cavity of the annular cover (4) and forms a limiting channel with the inner side wall of the annular cover (4); The outer circumferential wall of the fixed cylinder (5) is provided with a spiral sliding channel (501); A rotating cylinder (6) is rotatably arranged inside the fixed cylinder (5); The rotating cylinder (6) has a linear movable groove (601) on its side wall; The linear movable groove (601) has a sliding block (7) slidably arranged inside its cavity; The movable block (7) includes a lever (701), which is movably arranged in the spiral sliding channel (501) and extends into the limiting channel; When the rotating cylinder (6) rotates in the forward direction, the lever (701) can move along the spiral sliding channel (501) in a spiral path to move the wire (8) in the limiting channel, so that the wire (8) can be wound around the outer wall of the fixed cylinder (5); when the rotating cylinder (6) rotates in the reverse direction, the spiral wire (8) on the outer wall of the fixed cylinder (5) can be released, so that the wire (8) can extend out, be trimmed, and connected to the wiring module on the mounting panel (2).

2. The in-wall PC junction box for network engineering according to claim 1, characterized in that, The annular cover (4) has multiple wire blocks (401) connected to its side wall. The inner cavity of the wire block (401) is provided with a guide channel (402). The entrance of the guide channel (402) is aligned with the wire inlet of the junction box (3). The exit of the guide channel (402) is connected to the limiting channel. The annular cover (4) also has multiple pull grooves (403) on its side wall. The pull grooves (403) are used to pull the network cable (8) extending from the exit of the guide channel (402) out of the limiting channel to provide operating space.

3. A wall-mounted PC junction box for network engineering according to claim 2, characterized in that, Both ends of the inner circumference of the fixed cylinder (5) are integrally formed with annular protrusions (502) of the same structure, and both ends of the outer circumference of the rotating cylinder (6) are arranged with annular grooves (602) of the same structure. The rotating cylinder (6) forms a rotational fit with the annular protrusions (502) through the annular grooves (602), so that the outer side wall of the rotating cylinder (6) is in clearance fit with the inner side wall of the fixed cylinder (5).

4. A wall-mounted PC junction box for network engineering according to claim 3, characterized in that, The linear movable groove (601) is a straight groove structure. The inner wall of the linear movable groove (601) is connected to a slide cylinder (603). The inner cavity of the slide cylinder (603) is a cylindrical structure. The side wall of the slide cylinder (603) is provided with multiple linear slide grooves (604) that communicate with its inner cavity. The movable block (7) also includes a slide (702), the slide (702) has a circular groove (703) on its side wall, the slide (702) is movably fitted on the outer circumference of the slide cylinder (603) through the circular groove (703), the inner side wall of the circular groove (703) is connected to a pressure cylinder (705) through multiple sliders (704), the sliders (704) are slidably arranged in the linear groove (604), and the pressure cylinder (705) is spaced in the inner cavity of the slide cylinder (603).

5. A wall-mounted PC junction box for network engineering according to claim 4, characterized in that, The lever (701) consists of a fixed post (7011) and a roller (7012). The fixed post (7011) is integrally formed on the top of the slide (702). The roller (7012) is movably sleeved on the outer circumference of the fixed post (7011). The roller (7012) has a waist-shaped structure that is wider at the top and narrower at the bottom.

6. A wall-mounted PC junction box for network engineering according to claim 5, characterized in that, An oil bag (605) is inserted into the inner cavity of the slide cylinder (603). The oil bag (605) includes a bag body (6051). The bag body (6051) is a corrugated tubular structure made of flexible material. The inner cavity of the bag body (6051) is filled with lubricating oil. One end of the bag body (6051) is connected to a pressure plate (6052), and the other end is connected to a plug (6053). The inner cavity of the plug (6053) is connected to a sealing block (6054). The sealing block (6054) is a circular plate structure made of elastic rubber. A cross-shaped slit is opened on the side wall of the sealing block (6054).

7. A wall-mounted PC junction box for network engineering according to claim 6, characterized in that, A plug (606) is threadedly connected to the inlet of the inner cavity of the slide cylinder (603). A push plate (608) is connected to the side wall of the plug (606) via a spring (607). The push plate (608) is in abutting contact with the side wall of the pressure plate (6052).

8. A wall-mounted PC junction box for network engineering according to claim 7, characterized in that, The pressure cylinder (705) has a cone-shaped plug (7051) integrally formed on its side wall. The cone-shaped plug (7051) is used to insert into the cross-shaped slit on the side wall of the sealing block (6054) and communicate with the inner cavity of the bag body (6051). The cone-shaped plug (7051), pressure cylinder (705), slide (702) and fixing column (7011) are connected to form an oil outlet channel (706).

9. A wall-mounted PC junction box for network engineering according to claim 8, characterized in that, The side wall of the fixed column (7011) is provided with a plurality of oil outlet holes 1 (7013), and the side wall of the roller (7012) is provided with a plurality of oil outlet holes 2 (7014). The oil outlet holes 1 (7013) are used to discharge lubricating oil to lubricate the mating surfaces of the fixed column (7011) and the roller (7012). The excess lubricating oil can be discharged through the oil outlet holes 2 (7014) and seep into the outer side wall of the roller (7012).

10. A wall-mounted PC junction box for network engineering according to claim 9, characterized in that, The multiple oil outlet holes 1 (7013) and multiple oil outlet holes 2 (7014) are arranged in a ring array in the horizontal direction and densely arranged from bottom to top in the vertical direction; the diameter of the oil outlet hole 2 (7014) is larger than the diameter of the oil outlet hole 1 (7013), and the number of oil outlet holes 2 (7014) is greater than the number of oil outlet holes 1 (7013) in both the horizontal and vertical directions.

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