Partitioned wiring type cable branch box

Abstract

The invention relates to the field of cable branch, and discloses a partition wiring type cable branch box, which comprises a box body, a main switch, a sub-switch, wire components and a wiring structure, and is characterized in that the wire components are connected between a wire inlet bar and the main switch and between a wire outlet bar and the sub-switch in a one-to-one correspondence manner; the wiring structure comprises a plurality of wiring bins arranged along the wiring space, movable bases movably arranged in the wiring bins and rebound heads at least partially installed in the movable bases in a sliding mode, and a positioning point is formed on each rebound head so that the part, away from the end, of the wire part can be limited to the positioning point. According to the invention, under the movement of the movable base and the rebound head, the redundant part of the wire guide part is gradually stored in the wiring bin, so that the partitioned wiring of the wiring space is realized, the traction force generated to the end part in a straightened state is relieved through a micro-tension cable, and the situation that the joint part is not tightly connected due to the traction force is avoided; and the safety and the stability of cable connection are improved.

Description

Technical Field

[0001] This invention relates to cable branching technology, and more specifically to a zoned cable branching box. Background Technology

[0002] Cable branch boxes distribute the power from the main cable to multiple branch cables, realizing power branching and transfer. Cable branch boxes can connect different lines, facilitating the expansion and adjustment of the power system. Cable branch boxes protect the internal cables, providing a safe maintenance environment for the branch cables and facilitating daily maintenance.

[0003] Normally, the main cable is introduced into the cable branch box from the bottom and then connected to the main switch. The output terminal of the main switch is connected to the sub-switch through a copper busbar. The output terminals of the sub-switch lead out the branch cables and exit from the bottom of the cable branch box to realize the cable transfer.

[0004] In existing technology, the main cable entering the cable branch box is directly connected to the main switch, and the branch cable exits from the sub-switch to the outside of the box. Due to different wiring positions and cable lengths, the main cable and branch cable inside the box may be loose or tight. If the cable is loose, it is easy to get tangled and interfere with other cables that are also loose, which is inconvenient for subsequent maintenance and replacement. If the cable is tight, it is easy to exert tension on the cable joint, resulting in loose connections after long-term use, which leads to poor cable connection safety and stability. Summary of the Invention

[0005] To address these issues, the present invention provides a partitioned cable branch box, which effectively solves the technical problems in the prior art, such as the inconsistency in cable conditions within the cable branch box leading to entanglement and interference between cables, loose connections at cable joints causing inconvenience in later cable maintenance, and poor cable connection safety and stability.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: a partitioned cable branch box, comprising: The enclosure has an inlet and an outlet cable near the bottom of the cable inlet / outlet. The inlet cable connects to the main cable introduced from outside the enclosure, and the outlet cable leads out branch cables. The main switch is located inside the enclosure and is connected to the incoming line bar. Multiple sub-switches are installed inside the enclosure. The incoming terminals of each sub-switch are connected to the main switch, and its outgoing terminals are connected to the outgoing cable busbar. The wire components are connected one-to-one between the inlet busbar and the main switch, and between the outlet busbar and the sub-switch; The wiring structure is provided in the wiring space formed between the incoming line bar and the main switch, and between the outgoing line bar and the sub-switch; The wiring structure includes a plurality of wiring compartments arranged along the wiring space, a movable base movably disposed in the wiring compartments, and a return head at least partially slidably mounted in the movable base. Each return head has a positioning point to limit the portion of the wire component away from the end to be located at the positioning point. Under the action of thrust, the rebound head retracts at least a certain distance into the movable base, and then drives the movable base to move into the wiring compartment, so as to gradually pull the wire component into the wiring compartment until the wire component is in a taut state. Then, the external thrust is released, causing the rebound head to rebound outward relative to the movable base, and the wire component is adjusted from a taut state to a slightly taut state.

[0007] Furthermore, the wiring compartment is arranged along a routing direction that deviates from the end of the wire component, and the movement direction of the movable base relative to the wiring compartment is consistent with the movement direction of the return head relative to the movable base.

[0008] Furthermore, a positioning frame is provided in the length direction of the box, and the wiring compartments are arranged one by one along the length direction of the positioning frame; The wiring compartment is arranged along the width of the box.

[0009] Furthermore, a retraction groove is provided inside the movable base, and the end of the rebound head is slidably disposed in the retraction groove; A spring connects the rebound head and the retraction groove.

[0010] Furthermore, the side wall of the wiring compartment is slotted, and a positive pressure plate is provided on the side of each wiring compartment. The positive pressure plate protrudes outward from the side wall facing the wiring compartment and forms a friction inner layer. The movable base and the friction inner layer are in sliding contact. The outer end of the positive pressure plate is connected to a horizontal plate, which can move along a direction parallel to the length of the positioning frame. The inner side wall of the positioning frame is fitted with a nest, and the end of the horizontal plate is movably disposed within the nest. A threaded sleeve is installed through the side wall of the positioning frame, and a threaded bolt is fitted inside the threaded sleeve. An adjustment knob is connected to the end of the threaded bolt, and several sets of bushings are provided on the threaded bolt. Each set of bushings is symmetrically arranged on both sides of the positive pressure plate.

[0011] Furthermore, the frictional force generated by the inner friction layer on the movable base is greater than or equal to the elastic force generated by the spring under deformation conditions.

[0012] Furthermore, the head of the rebound head is provided with a positioning buckle, and the position of the positioning buckle forms the positioning point; The positioning buckle has a side opening to allow the wire component to pass through and enter the interior of the positioning buckle.

[0013] Furthermore, it also includes wiring aids; The wiring aid includes a motherboard and a push-button that passes through and slides on the motherboard; The pressing pin is arranged along the movement direction of the movable base and the rebound head, and the pressing pin corresponds to the rebound head one by one.

[0014] Furthermore, both sides of the motherboard are connected to connecting side plates, and the ends of the connecting side plates are connected to positioning pressure plates; Positioning brackets are installed inside the box at the inlet terminal, the inlet bar, and the outlet bar near the main switch; The positioning plate and the positioning seat are parallel. The positioning plate can simultaneously press directly onto the positioning seat and fix the wire component passing through the positioning seat.

[0015] Furthermore, guide side plates are provided on both sides of the positioning frame; The box is vertically mounted on both sides, and the mounting frame has several mounting holes along its length. The mounting bracket has two mounting bases. The main switch and the sub-switch are both mounted on one of the mounting bases, and the inlet bus and the outlet bus are mounted on the other mounting base. The mounting bracket, the positioning frame, and the positioning bracket are all mounted on the mounting frame by bolts.

[0016] Compared with the prior art, the present invention has the following advantages: In this invention, an inlet and outlet cable are installed at the bottom of the enclosure near the cable inlet and outlet to connect and lead in the main cable and branch cable. Adaptive conductor components are installed between the inlet cable and the main switch, and between the outlet cable and the sub-switch. These conductor components serve as the main conductive medium inside the enclosure, thus avoiding excessive tension or looseness due to large differences in cable conditions within the enclosure. A cabling compartment is set up in the cabling space, and different wire components are positioned at the positioning points. Under the movement of the movable base and the return head, the excess parts of the wire components are gradually stored in the cabling compartment, realizing the partitioned cabling of the cabling space and avoiding the tangling of cables. Furthermore, as the conductor component is gradually pulled to a taut state, the rebound head can spring back, causing the conductor component to change to a slightly taut state. This not only avoids interference caused by the cable being too loose, but also relieves the tension on the end part caused by the taut state through the slightly taut cable, thus avoiding loose connection at the joint due to tension, and improving the safety and stability of the cable connection. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a partitioned cable branch box provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a box containing wiring aids in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the box without wiring aids in an embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of the front structure; Figure 5 This is a schematic diagram of the wiring structure in an embodiment of the present invention; Figure 6 for Figure 5 A magnified structural diagram of A in the middle; Figure 7 This is a top view of the wiring structure in an embodiment of the present invention; Figure 8 for Figure 7 A planar sectional view along direction AA; Figure 9 This is a schematic diagram of the lateral wiring of the main body of the conductor when the wiring compartment is set along the width direction of the box in an embodiment of the present invention; Figure 10 for Figure 9 A schematic diagram of the lateral routing of the main conductor after it has been wired. Figure 11 This is a schematic diagram of the lateral wiring of the conductor body after wiring is performed when the wiring compartment is set in a vertical direction in an embodiment of the present invention; Figure 12 This is a schematic diagram of the wiring auxiliary component in an embodiment of the present invention; Figure 13This is a schematic diagram of the wiring structure, positive pressure plate, and horizontal plate in an embodiment of the present invention; Figure 14 for Figure 13 A magnified structural diagram of B in the diagram.

[0019] The labels in the diagram represent the following: 1. Cabinet; 2. Main switch; 3. Sub-switch; 4. Wire assembly; 5. Wiring structure; 6. Wiring auxiliary components; 7. Inlet cable tray; 8. Outlet cable tray; 9. Positioning bracket; 10. Positioning frame; 11. Guide side plate; 12. Mounting bracket; 13. Mounting hole; 14. Mounting bracket; 15. Bolt; 16. Copper busbar; 17. Positioning groove; 18. Positioning bolt; 41. Main body of the conductor; 51. Wiring compartment; 52. Movable base; 53. Rebound head; 54. Retraction groove; 55. Friction inner layer; 56. Positioning buckle; 57. Positive pressure plate; 58. Horizontal plate; 59. Nesting; 510. Threaded sleeve; 511. Threaded bolt; 512. Bushing; 513. Adjustment knob; 61. Mainboard; 62. Press bolt; 63. Connecting side plate; 64. Positioning pressure plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides a partitioned cable branch box, including a box body 1, an inlet bar 7, an outlet bar 8, a main switch 2, a sub-switch 3, a conductor component 4, a wiring structure 5, etc.

[0022] The cable branch box adopts a bottom-entry and bottom-outlet design. Therefore, the cable inlet and outlet are located at the bottom of the box 1. Inside the box 1, near the bottom cable inlet and outlet, there are inlet busbars 7 and outlet busbars 8. Inlet busbar 7 connects to the main cable introduced from outside the box 1, and outlet busbar 8 leads out the branch cable. There is one main switch 2 and multiple sub-switches 3, all of which are located inside the box 1. Both the main switch 2 and the sub-switches 3 are equipped with inlet terminals and outlet terminals. The inlet terminal of the main switch 2 is connected to the inlet busbar 7. The inlet terminals of the sub-switches 3 are connected to copper busbars 16 one by one, and are connected to the main switch 2 through the copper busbars 16. The outlet terminals of the sub-switches 3 are connected to the outlet busbars 8.

[0023] Under normal circumstances, sub-switch 3 can be a three-phase switch. The main cable generally includes a live wire and a neutral wire. The three live wires are connected to different interfaces on the incoming line busbar 7 and connected to different incoming terminals of the main switch 2 by different cables. The different outgoing terminals of the main switch 2 are connected to three different copper busbars 16. The incoming terminals of sub-switch 3 are connected to the three copper busbars 16 respectively. At this time, sub-switch 3 outputs AC power.

[0024] Sub-switch 3 can also be a two-phase switch. In this case, the three live wires are connected to different interfaces on the incoming line busbar 7, and different cables are connected to different incoming terminals of the main switch 2. Different outgoing terminals of the main switch 2 are connected to three different copper busbars 16. The housing 1 also has a neutral busbar and a ground busbar. The neutral busbar is connected to the ground busbar. The neutral wire is connected to a certain interface on the incoming line busbar 7, and then the cable through the interface of the incoming line busbar 7 is directly connected to the neutral busbar. The incoming terminals of sub-switch 3 are connected to the neutral busbar and one of the copper busbars 16 respectively. At this time, sub-switch 3 outputs DC power.

[0025] In practical applications, you can choose whether to output DC or AC power according to your needs, which will determine whether to install a neutral busbar, a ground busbar, and whether to use a two-phase or three-phase switch.

[0026] The cable that enables the electrical connection between the incoming line bar 7 and the main switch 2, between the sub-switch 3 and the outgoing line bar 8, and between the neutral line bar and the grounding line bar is the conductor component 4. The conductor component 4 in this invention adopts a detachable design. The conductor component 4 is connected one-to-one between the incoming line bar 7 and the main switch 2, and between the outgoing line bar 8 and the sub-switch 3. Specifically, the conductor component 4 includes a conductor body 41 and a wire clamp disposed at the end of the conductor body 41. The wire clamp is connected to the main switch 2, the sub-switch 3, the incoming line bar 7, and the outgoing line bar 8.

[0027] In this invention, an inlet bar 7 and an outlet bar 8 are installed at the bottom of the housing 1 near the cable inlet and outlet to connect and lead in the main cable and branch cables, so that only the ends of the main cable and branch cables are inside the housing 1. The conductor component 4 is used to connect the cables inside the housing 1. By setting the conductor component 4 of the appropriate specification between the inlet bar 7 and the main switch 2, and between the outlet bar 8 and the sub-switch 3, and using the conductor component 4 as the main conductive medium inside the housing 1, different specifications of conductor component 4 can be selected according to the distance between the inlet bar 7 and the main switch 2, and between the outlet bar 8 and the sub-switch 3, so as to effectively avoid the situation of excessive tightness or looseness of the cables inside the housing 1 due to the large difference in cable condition.

[0028] When selecting the appropriate wire component 4 based on the distance between the incoming line bar 7 and the main switch 2, and between the outgoing line bar 8 and the sub-switch 3, a certain margin needs to be reserved. That is, the wire component 4 needs to be in a loose state when there is no wiring through the wiring structure 5. In addition, the margin needs to be controlled within a certain range to avoid tangling when the margin is too large. The margin can be represented by the difference between the length of the wire component 4 and the distance between the two ends of the interface (e.g., between the interface of the incoming line bar 7 and the main switch 2).

[0029] In this invention, the wiring structure 5 is set in the wiring space formed between the incoming line bar 7 and the main switch 2, and between the outgoing line bar 8 and the sub-switch 3. The wiring space is the space area between the incoming line bar 7 and the main switch 2, and between the outgoing line bar 8 and the sub-switch 3. The wiring structure 5 can adjust the layout of the wire components 4 in the wiring space.

[0030] When providing DC power to the outside, a neutral busbar and a ground busbar (not shown in the figure) need to be set up. Generally, the neutral busbar is close to the copper busbar 16, and the ground busbar is close to the incoming busbar 7 and the outgoing busbar 8. Since the conductor component 4 corresponding to the neutral wire is connected to the neutral busbar from the incoming busbar 7, and the neutral busbar is connected to the ground busbar through the conductor component 4, in the above case, it is also necessary to use the wiring structure 5 to wire the conductor component 4 between the incoming busbar 7 and the neutral busbar, and between the neutral busbar and the ground busbar.

[0031] Therefore, when only AC power is supplied to the outside, the neutral wire does not need to be energized inside the enclosure 1, and wiring is not required for the wire components 4 other than those between the incoming line 7 and the main switch 2, and between the outgoing line 8 and the sub-switch 3. When DC power is supplied to the outside, the neutral wire needs to be energized inside the enclosure 1, and wiring is required for the wire components 4 between the incoming line 7 and the main switch 2, between the outgoing line 8 and the sub-switch 3, between the incoming line 7 and the neutral line, and between the neutral line and the ground line.

[0032] Specifically, such as Figure 5 , Figure 6 and Figure 7 As shown, the wiring structure 5 includes a plurality of wiring compartments 51 arranged along the wiring space, a movable base 52 movably arranged in the wiring compartments 51, and a return head 53 at least partially slidably installed in the movable base 52. Each return head 53 has a positioning point formed on it to limit the part of the wire component 4 away from the end to be positioned at the positioning point, that is, the middle part of the wire body 41 is positioned at the positioning point. In this state, the wire body 41 can move with the positioning point.

[0033] The external force pushes the return head 53. Under the action of the thrust, the return head 53 retracts into the movable base 52 at least a certain distance, and then drives the movable base 52 to move into the wiring compartment 51, so as to gradually pull the wire component 4 into the wiring compartment 51 until the wire component 4 is in a taut state. Then the external thrust is released, causing the return head 53 to spring outward relative to the movable base 52, and the wire component 4 is adjusted from a taut state to a slightly taut state.

[0034] The aforementioned slightly taut state refers to the conductor body 41 being close to being taut, but not actually taut. It is a state between being taut and being loose, and is closer to being taut. In the slightly taut state, the conductor body 41 has very little slack and does not exert any pulling force on the two ends.

[0035] In this invention, a wiring compartment 51 is set in the wiring space. The wiring compartment 51 is set one-to-one between the different interfaces of the inlet bar 7 and the main switch 2, the sub-switch 3 and the outlet bar 8. Different wire components 4 are positioned at the positioning points. Under the movement of the movable base 52 and the return head 53, the excess part of the wire component 4 is gradually stored in the wiring compartment 51, realizing the partitioned wiring of the wire components 4 in the wiring space and avoiding the tangling between the cables.

[0036] In addition, after the conductor component 4 is gradually pulled to a taut state, the return head 53 can spring back, causing the conductor component 4 to change to a slightly taut state. This not only avoids interference caused by the cable being too loose, but also relieves the tension on the end part caused by the taut state through the slightly taut cable, thus avoiding loose connection at the joint due to tension, and improving the safety and stability of the cable connection.

[0037] The main feature of this invention is the construction of a main movable structure that can retract the main wire body 41 into the wiring chamber 51 to complete the wiring. This main movable structure includes two relatively movable sub-movable structures: a movable base 52 and a return head 53. The main movable structure can move relative to the wiring chamber 51, and the sub-movable structures can move relative to each other. The relative movement of the sub-movable structures necessarily takes precedence over the movement of the main movable structure. That is, when one of the sub-movable structures, the return head 53, is subjected to a thrust, the sub-movable structures will first undergo relative displacement, while the position of the main movable structure within the wiring chamber 51 remains essentially unchanged. This sequence of activities ensures that the sub-moving structure rebound head 53 can generate a certain elastic movement distance relative to the moving base 52, thereby ensuring that when the external force is released, the rebound head 53 can rebound in the direction of the original elastic movement distance. If the sequence of activities of the sub-moving structure and the main moving structure is not limited according to the above requirements, it is very likely that when the sub-moving structure rebound head 53 is pushed, it will directly drive the entire main moving structure to move. If there is no relative displacement between the sub-moving structures, the subsequent rebound action cannot be completed, and the transition from the taut state to the slightly open state cannot be completed.

[0038] The incoming line bar 7 and the main switch 2 are located at different heights, and the sub-switch 3 and the outgoing line bar 8 are located at different heights. Therefore, in the absence of wiring, the wire component 4 is generally in a near-vertical wiring configuration. Figure 11 As shown, if the wiring compartment 51 is set vertically, during the process of the conductor body 41 entering the wiring compartment 51, one section of the conductor body 41 will inevitably need to be bent at nearly 180°, while the other section of the conductor body 41 will not need to be bent. Under long-term use, the wear and tear on different parts of the conductor body 41 will increase, which is not conducive to the long-term use of the conductor body 41. Therefore, the wiring compartment 51 needs to be set along the routing direction that is deviated from the end of the conductor component 4. In this case, both sections of the conductor body 41 will be bent, but the bending angle will not reach 180°. This design can make the bending angles of the two segments of the conductor body 41 on both sides of the positioning point more similar, and even out the degree of bending of different segments of the conductor body 41 during the wiring process, avoiding the situation where the bending angle of one segment is too large due to the large difference in the degree of bending, resulting in more wear.

[0039] Furthermore, a positioning frame 10 is provided in the length direction inside the housing 1, and wiring compartments 51 are set one by one along the length direction of the positioning frame 10. The setting position of each wiring compartment 51 on the positioning frame 10 can be adjusted according to the actual interface position of the incoming line 7, the main switch 2, the sub-switch 3, and the outgoing line.

[0040] Considering the bending and wear of the wire body 41 segments on both sides of the positioning point, the setting posture of the wiring compartment 51 can be optimized as follows: the wiring compartment 51 is set along the width direction of the housing 1. In this case, such as Figure 9 and Figure 10 As shown, during the process of the conductor body 41 moving into the wiring compartment 51 following the positioning point, the line segments of the conductor body 41 on both sides of the positioning point gradually become larger and less than 90°, so that the bending degree of the line segments of the conductor body 41 on both sides of the positioning point is similar and the bending angle is not large, which greatly reduces the bending angle and bending difference of the conductor body 41 during the wiring process.

[0041] Generally, the enclosure 1 is equipped with a door, which is located on the front. Combined with the design that "the wiring compartment 51 is set along the width direction of the enclosure 1", the wiring compartment 51 is directly facing the door. When the door is open, the installer is facing the wiring compartment 51 and can directly push the movable base 52 and the return head 53 in the direction facing the installer, either manually or with the help of external auxiliary tools, to wire the main body 41. Therefore, the wiring compartment 51 is set along the width direction of the enclosure 1, which not only reduces bending wear and bending differences, but also makes it easier for the installer to wire.

[0042] When the return head 53 is pushed along the direction of the wiring compartment 51, the movable base 52 will also be pushed to move along the wiring compartment 51. To achieve the above process, the movement direction of the movable base 52 relative to the wiring compartment 51 should be consistent with the movement direction of the return head 53 relative to the movable base 52.

[0043] When the external force on the rebound head 53 is released, the rebound head 53 can move away from the movable base 52, causing the lead wire component 4 to be adjusted from a taut state to a slightly taut state. Specifically, a retraction groove 54 is provided in the movable base 52, and the end of the rebound head 53 is slidably disposed in the retraction groove 54. A spring is connected between the rebound head 53 and the retraction groove 54.

[0044] Regardless of the situation, the end of the return head 53 is always within the retraction groove 54. In the initial state, when the return head 53 is pushed, it moves into the retraction groove 54, compressing the spring. When the spring is compressed to its maximum limit, it can no longer be compressed. At this time, the thrust can push the movable base 52 and the return head 53 together into the wiring compartment 51. When the wire component 4 is in a taut state, the thrust can no longer push the movable base 52 and the return head 53. When the thrust is released, under the action of the spring force, the return head 53 moves a small distance away from the retraction groove 54 until the spring returns to its natural state. During this process, the wire component 4 changes from a taut state to a slightly taut state.

[0045] To achieve rebound, the rebound head 53 must be pushed relative to the movable base 52 by a thrust before the movable base 52 moves. In this regard, the present invention is designed as follows: a friction inner layer 55 is formed on the inner wall of the wiring compartment 51, and the movable base 52 and the friction inner layer 55 slide in contact. The friction force generated by the friction inner layer 55 on the movable base 52 is greater than or equal to the elastic force formed by the spring under the condition of generating deformation x.

[0046] Based on the above conditions, a motion and force analysis is performed on the movement process of the return head 53 and the movable base 52: During the application of thrust to the return head 53 of the sub-movable structure, the thrust gradually increases from 0. From the perspective of the force on the main movable structure, the initial thrust is small, less than the frictional force generated by the inner friction layer 55 on the movable base 52. Therefore, the thrust cannot drive the overall movement of the main movable structure. From the perspective of the force on the sub-movable structure, initially the spring does not deform and has no elasticity. Later, under the action of the thrust, the return head 53 gradually compresses the spring, causing the spring to be compressed and deformed. The degree of deformation varies. As the spring deformation gradually increases, the spring force also gradually increases. Assuming that when the spring deformation reaches x, the return head 53 has moved a certain distance relative to the movable base 52 (the displacement of the return head 53 is close to x, and the return distance of the return head 53 is also close to x), the thrust at this time must be greater than the spring force generated by the spring under the condition of generating deformation x. From the perspective of the force on the main movable structure, the thrust is greater than the friction force generated by the friction inner layer 55 on the movable base 52. At this time, the thrust is sufficient to resist the friction force generated by the friction inner layer 55 on the movable base 52, and the thrust can push the main movable structure as a whole to move along the wiring compartment 51.

[0047] Under the condition that "the frictional force generated by the inner friction layer 55 on the movable base 52 is equal to the elastic force formed by the spring under the condition of generating deformation x", it is possible to: first push the return head 53 to move a certain distance relative to the movable base 52, and then push the return head 53 and the movable base 52 to move as a whole, so as to realize the storage and wiring of the wire body 41. When the wire body 41 is pushed into a taut state, the tension of the wire body 41 itself will prevent the return head 53 and the movable base 52 from moving, and release the pushing force. Under the action of the spring force, the return head 53 rebounds relative to the movable base 52, so that the wire body 41 changes from a taut state to a slightly taut state.

[0048] Based on the above analysis, it can be seen that when the thrust reaches and exceeds the frictional force generated by the inner friction layer 55 on the movable base 52, it can drive the main movable structure to move relative to the wiring compartment 51. Therefore, under the condition that other conditions remain unchanged, the distance that the thrust pushes the sub-movable structure return head 53 to move mainly depends on the magnitude of the frictional force generated by the inner friction layer 55 on the movable base 52. If the frictional force generated by the inner friction layer 55 on the movable base 52 is greater, the thrust needs to be increased to a certain value to drive the main movable structure to move. During this process, the greater the distance that the thrust pushes the sub-movable structure return head 53 to move, the greater the distance that the return head 53 will rebound. In the above process, it is assumed that the spring has a sufficiently large degree of deformation, and the spring has not yet reached its maximum deformation degree when the main movable structure moves relative to the wiring compartment 51.

[0049] Therefore, to adjust the rebound distance of the rebound head 53, it is necessary to adjust the friction force generated by the inner friction layer 55 on the movable base 52. Specifically, as follows: Figure 13 and Figure 14 As shown, the side wall of the wiring compartment 51 is slotted, and a positive pressure plate 57 is provided on the side of each wiring compartment 51. The positive pressure plate 57 protrudes outward from the side wall facing the wiring compartment 51 and forms a friction inner layer 55. The movable base 52 and the friction inner layer 55 are in sliding contact. A horizontal plate 58 is connected to the outer end of the positive pressure plate 57. The horizontal plate 58 can move along the length direction parallel to the positioning frame 10. A nest 59 is installed on the inner side wall of the positioning frame 10. The end of the horizontal plate 58 is movably set in the nest 59. A threaded sleeve 510 is installed through the side wall of the positioning frame 10. A threaded bolt 511 is fitted inside the threaded sleeve 510. An adjustment knob 513 is connected to the end of the threaded bolt 511. Several sets of bushings 512 are provided on the threaded bolt 511. Each set of bushings 512 is symmetrically arranged on both sides of the positive pressure plate 57.

[0050] Among them, the threaded bolt 511 is a long rod structure with external threads in the area near the outer wall of the threaded sleeve 510, while the outer wall of the remaining rod section is smooth.

[0051] In the above embodiments, rotating the adjustment knob 513 causes the threaded bolt 511 to move forward in a spiral motion within the threaded sleeve 510, which can adjust the lateral position of the threaded bolt 511. The threaded bolt 511 can drive the bushing 512 to move horizontally, thereby driving the positive pressure plate 57 to move along the direction of the threaded bolt 511. When the positive pressure plate 57 is in different positions, the positive pressure applied by the friction inner layer 55 to the movable base 52 is different. The greater the positive pressure applied by the friction inner layer 55 to the movable base 52, the greater the frictional force generated by the friction inner layer 55 on the movable base 52.

[0052] Assuming the friction force is adjusted to f, the thrust gradually increases to f before the main moving structure can move. The thrust reaching the value of f has already caused the spring to produce a deformation of x. The thrust is approximately equal to the elastic force generated by the spring, and the elastic force is proportional to x. Therefore, the greater the friction force generated by the inner friction layer 55 on the moving base 52, the greater the theoretically required thrust f, the greater the deformation of the spring x, and the greater the rebound distance of the return head 53.

[0053] The above process can adjust the friction force generated by the inner friction layer 55 on the movable base 52. By adjusting the friction force, the deformation x can be adjusted to a suitable value, and the rebound distance of the rebound head 53 can be controlled within a reasonable range. This controls the micro-tension of the conductor body 41, avoiding excessive rebound that would cause the conductor body 41 to be too loose, and avoiding insufficient rebound that would cause the conductor body 41 to remain taut.

[0054] In this invention, a certain amount of friction is generated between the movable base 52 and the friction inner layer 55. This is not only to complete the above-mentioned wiring process, but also to prevent the movable base 52 from moving after the thrust on the return head 53 is removed, thus keeping the movable base 52 in a fixed state. Therefore, after the thrust is removed, the position of the movable base 52 in the wiring chamber 51 is basically locked. Only the return head 53 will rebound under the action of the spring, thus preventing the slight tension of the wire body 41 from being affected by the possible movement of the movable base 52.

[0055] To achieve the positioning of the conductor body 41 at the positioning point, the present invention makes the following design, as follows: Figure 7 and Figure 8 As shown, the head of the rebound head 53 is provided with a positioning buckle 56, and the position of the positioning buckle 56 forms a positioning point; wherein, the side opening of the positioning buckle 56 allows the wire component 4 to pass through and enter the interior of the positioning buckle 56.

[0056] In practical applications, the main body of the wire 41 is passed through the side opening of the positioning buckle 56, so that the main body of the wire 41 is positioned on the positioning buckle 56 in a through state.

[0057] Generally, the installation personnel manually apply a pushing force to the return head 53. Considering that direct manual pressure is not very safe, the present invention also provides a wiring auxiliary component 6. Specifically, the wiring auxiliary component 6 includes a main board 61 and a pressing bolt 62 that passes through and slides on the main board 61. The pressing bolt 62 is set along the movement direction of the movable base 52 and the return head 53, and the pressing bolt 62 corresponds one-to-one with the return head 53.

[0058] The pressing pin 62 is made of insulating material. Pressing the pressing pin 62 to press the return head 53 applies a thrust to the return head 53.

[0059] Because the wiring aid 6 is an externally assisted wiring structure, installers need to manually fix the position of the motherboard 61 and ensure that each push button 62 is directly aligned with the corresponding return head 53. Manual alignment is quite difficult. Therefore, if... Figure 3 and Figure 12 As shown, a positioning groove 17 can be set on the positioning frame 10, and a corresponding positioning bolt 18 can be set on the side of the motherboard 61 near the positioning frame 10. Aligning the positioning bolt 18 with the positioning groove 17 and embedding it into the positioning groove 17 can temporarily fix the position of the motherboard 61 and also ensure that the pressing bolt 62 is aligned with the position of the return head 53.

[0060] During the process of applying pressure to the rebound head 53, the main body 41 of the conductor moves forward. As the main body 41 of the conductor gradually comes into a taut state, a pulling force is generated on both ends of the main body 41, causing the connection at both ends of the main body 41 to loosen during the wiring process. In order to avoid the above situation, the present invention also makes the following design: both sides of the main board 61 are connected to the connecting side plate 63, and the end of the connecting side plate 63 is connected to the positioning pressure plate 64. Positioning bases 9 are installed at the inlet terminal, inlet row 7 and outlet row 8 near the main switch 2 inside the housing 1. Positioning pressure plate 64 is parallel to positioning base 9. Positioning pressure plate 64 can press directly onto positioning base 9 at the same time and fix the wire component 4 passing through positioning base 9.

[0061] When the conductor body 41 is not in use, it is located to the side of the positioning seat 9. After the positioning pressure plate 64 is gradually pressed down, the end of the conductor body 41 is pressed between the positioning pressure plate 64 and the positioning seat 9, so that the end of the conductor body 41 is fixed. When the end of the conductor body 41 is fixed, the middle part of the conductor body 41 will not be pulled, thus avoiding the conductor body 41 from exerting a pulling force on the joint during the pulling process and thus preventing the joint from becoming loose.

[0062] To further reduce the bending angle of the conductor body 41, the present invention incorporates the following design: guide side plates 11 are provided on both sides of the positioning frame 10; additionally, the openings of the wiring compartment 51 are all designed with rounded corners. Figure 8 As shown, the conductor body 41 is bent once through the opening of the wiring compartment 51 and then bent once through the guide side plate 11. The design of the guide side plate 11 increases the number of bending points and reduces the bending angle, which can reduce the loss at the bending point and increase the service life of the conductor body 41. In addition, the length of the guide side plate 11 can be adjusted according to the interface position at the end of the conductor body 41, so that the guide side plate 11 can support the conductor body 41 and optimize the bending angle of the conductor body 41.

[0063] In this invention, the main switch 2, sub-switch 3, and other structures are detachably installed inside the housing 1. Specifically, mounting brackets 12 are vertically arranged on both sides inside the housing 1, and the mounting brackets 12 have several mounting holes 13 along their length. Two mounting seats 14 are installed on the mounting brackets 12. The main switch 2 and sub-switch 3 are both installed on one of the mounting seats 14, and the inlet cable 7 and outlet cable 8 are installed on the other mounting seat 14. The mounting seats 14, positioning brackets 10, and positioning seats 9 are all installed on the mounting brackets 12 by bolts 15.

[0064] In summary, the main installation process of this invention is as follows: Taking AC power supply as an example, a main switch 2 and a sub-switch 3 are installed inside the enclosure 1, and a copper busbar 16 is installed between the main switch 2 and the sub-switch 3 to connect the main cable to the incoming line 7. Install the wiring structure 5 inside the enclosure 1; Connect the wire component 4 between the incoming line bar 7 and the main switch 2, and connect the wire component 4 between the sub-switch 3 and the outgoing line bar 8; Position the wire body 41 near the center within the positioning buckle 56. Secure the end of the wire body 41 using the wiring aid 6. Then, apply a pushing force to the corresponding return head 53 of each wire body 41 using the pressing bolt 62. Under the action of the pushing force, the return head 53 moves a short distance relative to the movable base 52, causing the movable base 52 and the return head 53 to move together. The wire body 41 gradually enters the wiring chamber 51 following the return head 53 until the wire body 41 is in a taut state (when the pressing bolt 62 can no longer push forward, it is judged that the wire body 41 is in a taut state). Stop applying the pushing force. At this time, under the action of the spring, the wire body 41 will rebound a short distance with the return head 53, causing the wire body 41 to change from a taut state to a slightly taut state, completing the area wiring process of different wire bodies 41. Remove the wiring accessory 6, complete the connection of other cables inside the enclosure 1, and then close the enclosure door.

[0065] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A partitioned cable branch box, characterized in that, include: The box (1) has an inlet bar (7) and an outlet bar (8) near the bottom cable inlet and outlet. The inlet bar (7) is connected to the main cable introduced from outside the box (1), and the outlet bar (8) leads out the branch cable. The main switch (2) is located inside the housing (1) and is connected to the incoming line (7); Multiple sub-switches (3) are installed inside the housing (1). The incoming terminals of the sub-switches (3) are connected to the main switch (2), and their outgoing terminals are connected to the outgoing line (8). The wire component (4) is connected one-to-one between the incoming line bar (7) and the main switch (2), and between the outgoing line bar (8) and the sub-switch (3); The wiring structure (5) is provided in the wiring space formed between the incoming line bar (7) and the main switch (2), and between the outgoing line bar (8) and the sub-switch (3); The wiring structure (5) includes a plurality of wiring compartments (51) arranged along the wiring space, a movable base (52) movably arranged in the wiring compartments (51), and a return head (53) at least partially slidably installed in the movable base (52). Each return head (53) has a positioning point formed on it to limit the portion of the wire component (4) away from the end to be located at the positioning point. Under the action of thrust, the rebound head (53) retracts at least a certain distance into the movable base (52) and then drives the movable base (52) to move into the wiring compartment (51) to gradually pull the wire component (4) into the wiring compartment (51) until the wire component (4) is in a taut state. Then the external thrust is released, causing the rebound head (53) to rebound outward relative to the movable base (52), and the wire component (4) is adjusted from a taut state to a slightly taut state.

2. The partitioned cable branch box according to claim 1, characterized in that, The wiring compartment (51) is arranged along a routing direction that is offset from the end of the wire component (4), and the movement direction of the movable base (52) relative to the wiring compartment (51) is consistent with the movement direction of the return head (53) relative to the movable base (52).

3. The partitioned cable branch box according to claim 1, characterized in that, A positioning frame (10) is provided in the length direction of the box (1), and the wiring compartments (51) are arranged one by one along the length direction of the positioning frame (10); The wiring compartment (51) is arranged along the width direction of the box (1).

4. The partitioned cable branch box according to claim 3, characterized in that, The movable base (52) is provided with a retraction groove (54), and the end of the rebound head (53) is slidably disposed in the retraction groove (54); A spring is connected between the rebound head (53) and the retraction groove (54).

5. The partitioned cable branch box according to claim 4, characterized in that, The wiring compartment (51) has a slotted side wall, and a positive pressure plate (57) is provided on the side of each wiring compartment (51). The positive pressure plate (57) protrudes outward from the side wall facing the wiring compartment (51) and forms a friction inner layer (55). The movable base (52) and the friction inner layer (55) are in sliding contact. The outer end of the positive pressure plate (57) is connected to a horizontal plate (58), which can move along the length direction parallel to the positioning frame (10). The inner side wall of the positioning frame (10) is fitted with a nest (59), and the end of the horizontal plate (58) is movably disposed in the nest (59). The positioning frame (10) has a threaded sleeve (510) installed through the side wall. The threaded sleeve (510) is threaded with a threaded bolt (511). The end of the threaded bolt (511) is connected to an adjustment knob (513). Several sets of bushings (512) are provided on the threaded bolt (511). Each set of bushings (512) is symmetrically arranged on both sides of the positive pressure plate (57).

6. The partitioned cable branch box according to claim 5, characterized in that, The frictional force generated by the inner friction layer (55) on the movable base (52) is greater than or equal to the elastic force formed by the spring under the condition of deformation.

7. The partitioned cable branch box according to claim 1, characterized in that, The head of the rebound head (53) is provided with a positioning buckle (56), and the position of the positioning buckle (56) forms the positioning point. The positioning buckle (56) has an opening on its side so that the wire component (4) can pass through and enter the interior of the positioning buckle (56).

8. The partitioned cable branch box according to claim 4, characterized in that, It also includes wiring aids (6); The wiring aid (6) includes a motherboard (61) and a push-button (62) that passes through and slides on the motherboard (61). The pressing bolt (62) is arranged along the movement direction of the movable base (52) and the rebound head (53), and the pressing bolt (62) and the rebound head (53) correspond one-to-one.

9. The partitioned cable branch box according to claim 8, characterized in that, Both sides of the main board (61) are connected to connecting side plates (63), and the ends of the connecting side plates (63) are connected to positioning pressure plates (64). Positioning brackets (9) are installed in the housing (1) near the inlet terminal of the main switch (2), the inlet bus (7), and the outlet bus (8). The positioning plate (64) and the positioning seat (9) are parallel. The positioning plate (64) can press directly onto the positioning seat (9) at the same time and fix the wire component (4) passing through the positioning seat (9).

10. The partitioned cable branch box according to claim 9, characterized in that, Guide side plates (11) are provided on both sides of the positioning frame (10). The box (1) has a mounting bracket (12) vertically arranged on both sides, and the mounting bracket (12) has a number of mounting holes (13) along its length. The mounting bracket (12) is equipped with two mounting bases (14). The main switch (2) and the sub-switch (3) are both installed on one of the mounting bases (14), and the inlet bus (7) and the outlet bus (8) are installed on the other mounting base (14). The mounting bracket (14), the positioning frame (10), and the positioning bracket (9) are all mounted on the mounting frame (12) by bolts (15).

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