Quickly disassembled low-voltage cable branch box

Abstract

The utility model belongs to electrical equipment technical field, concretely relates to a low -voltage cable branch box of quick assembly and disassembly. The branch box includes the box and the vertical placement and the horizontal interval arrangement copper bar, still includes the guide rail of installing in the box along the horizontal direction, with the sliding seat of copper bar insulation connection and with the sliding fit of guide rail, the lock slot with vertical section and horizontal section is equipped with on the guide rail interval, the lock rod of axially movable and rotation is set up on the sliding seat, the one end of lock rod is equipped with the locating head close to the guide rail, the locating head can enter vertical section and rotate and insert the horizontal section, the anti -rotation head of the lock rod middle section is equipped with with pinhole, the elastic pin of being able to insert pinhole is equipped on the sliding seat to limit the rotation of lock rod. The utility model through the rotating engagement of locating head and lock slot and the bolt cooperation of elastic pin and anti -rotation head, realize the quick assembly and disassembly, interval adjustment and reliable locking of copper bar, solved the existing copper bar mounting structure operation complicated, the problem of fixed unreliable.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, specifically relating to a low-voltage cable branch box that can be quickly disassembled and assembled. Background Technology

[0002] Low-voltage cable distribution boxes are widely used in low-voltage power distribution systems such as urban power grids, industrial and mining enterprises, and residential communities for the branching, connection, and distribution of cables. Multiple copper busbars are typically installed vertically inside the box, through which the cables are electrically connected.

[0003] In existing technologies, copper busbars are mostly fixed by inserting insulated screws and clamping with positioning nuts. Adjusting the spacing of the copper busbars requires tightening the positioning nuts one by one, which is cumbersome and inefficient. Moreover, the nuts are prone to loosening under long-term vibration, causing changes in the spacing of the copper busbars and poor contact at cable connections, affecting power supply safety. Therefore, there is an urgent need for a low-voltage cable branch box that allows for quick assembly and disassembly, convenient spacing adjustment, and reliable locking. Utility Model Content

[0004] This invention utilizes a guide rail and a sliding block for sliding cooperation. The locking rod drives the positioning head into the vertical section of the locking groove and rotates to engage with the horizontal section. Simultaneously, the anti-rotation head rotates with the locking rod, and an elastic pin is inserted into the pin hole to restrict the rotation of the locking rod. This enables quick assembly and disassembly of the copper busbar, spacing adjustment, and reliable locking, thereby solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: a quick-assembly and disassembly low-voltage cable branch box, including a box body and vertically placed and horizontally spaced copper busbars, and further including: The guide rail is installed horizontally inside the housing. The slide block is insulated from the copper busbar and slides in conjunction with the guide rail. Locking grooves are spaced out on the guide rail along the horizontal direction, and the locking grooves have vertical sections and horizontal sections; A locking rod, which can move axially and rotate, is mounted on the slide block. A positioning head is provided at one end of the locking rod near the guide rail. The positioning head can enter the vertical section and rotate to engage with the horizontal section. An anti-rotation head is provided in the middle section of the locking rod. The anti-rotation head is provided with a pin hole, and the slide is provided with an elastic pin. The elastic pin can be inserted into the pin hole to limit the rotation of the locking rod.

[0006] The present invention is further configured such that the guide rail consists of two upper and lower rails, and the upper and lower parts of the copper busbar are provided with the slide blocks, and the upper and lower slide blocks are respectively slidably engaged with the upper and lower guide rails.

[0007] The present invention is further configured such that the elastic pin includes a pin body and a spring, the pin body is slidably disposed on the slide block, and the spring abuts against the pin body and the slide block, so that the pin body has a tendency to extend into the pin hole.

[0008] The present invention is further configured such that the slide has a rotating cavity, and the anti-rotation head is located in the rotating cavity and can rotate with the locking rod.

[0009] The present invention is further provided that the end of the locking rod away from the guide rail is provided with a handle.

[0010] The present invention is further configured such that the copper busbar has a long side mounting surface and a long side side that are perpendicular to each other, the long side side facing the opening side of the box, and the long side mounting surface facing the left and right sides of the box.

[0011] The present invention is further configured such that the slide, locking rod, positioning head, anti-rotation head and elastic pin are all made of insulating material or have an insulating layer on their surface.

[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By sliding the guide rail and the slide block together, the locking rod moves axially and rotates, so that the positioning head enters the vertical section of the locking groove and then locks into the horizontal section, realizing the rapid adjustment and initial positioning of the copper busbar spacing, and improving the convenience of copper busbar spacing adjustment.

[0013] 2. By cooperating with the anti-rotation head and the elastic pin, the elastic pin is driven to insert into the pin hole on the anti-rotation head, so that the locking rod cannot be reversed after locking, thus realizing the mechanical locking of the positioning head in the horizontal section and improving the reliability of the copper busbar fixing.

[0014] 3. By cooperating with the upper and lower guide rails and the upper and lower sliding blocks of the copper busbar, the upper and lower ends of the copper busbar slide and lock synchronously, so that the copper busbar remains stable when adjusting the spacing and fixing, thus improving the overall stability of the copper busbar installation structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall assembly of this utility model; Figure 2 This is a schematic diagram of the structure with the locking bar inserted into the locking groove; Figure 3 This is a schematic diagram of the structure after the locking rod is rotated and locked in the lock groove; Figure 4 This is a cross-sectional structural diagram of the guide rail.

[0016] The attached diagram is labeled as follows: 1. Housing; 2. Copper busbar; 3. Guide rail; 4. Slide; 5. Locking groove; 6. Vertical section; 7. Horizontal section; 8. Locking rod; 9. Positioning head; 10. Anti-rotation head; 11. Pin hole; 12. Elastic pin; 121. Pin body; 122. Spring; 13. Rotating cavity; 14. Handle; 15. Long side mounting surface; 16. Long side surface. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 : Example:

[0018] This embodiment provides a quick-assembly and disassembly low-voltage cable branch box, including a box body 1 and copper busbars 2 placed vertically and arranged at horizontal intervals, and further including: Guide rail 3 is installed horizontally inside the housing 1; The slide block 4 is insulated from the copper busbar 2, and the slide block 4 is slidably engaged with the guide rail 3; Locking grooves 5 are spaced out on the guide rails 3 along the horizontal direction, and the locking grooves 5 have a vertical section 6 and a horizontal section 7; The locking rod 8 is axially movable and rotatably mounted on the slide block 4. The locking rod 8 has a positioning head 9 at one end near the guide rail 3. The positioning head 9 can enter the vertical section 6 and rotate into the horizontal section 7. An anti-rotation head 10 is provided in the middle section of the locking rod 8. The anti-rotation head 10 is provided with a pin hole 11, and the slide 4 is provided with an elastic pin 12. The elastic pin 12 can be inserted into the pin hole 11 to restrict the rotation of the locking rod 8.

[0019] This specific embodiment discloses a quick-assembly and disassembly low-voltage cable distribution box, which includes a box body 1, copper busbars 2, guide rails 3, slides 4, locking grooves 5, locking rods 8, positioning heads 9, anti-rotation heads 10, elastic pins 12, and handles 14. The box body 1 is a rectangular shell structure with one open side serving as the box door mounting side. The interior of the box body 1 forms a space to accommodate the copper busbars 2 and the mounting structure. The inner wall of the back plate of the box body 1 is used to mount the guide rails 3. The copper busbars 2 are placed vertically, and multiple copper busbars 2 are arranged at intervals along the horizontal direction. Each copper busbar 2 has a long side mounting surface 15 and a long side side 16 that are perpendicular to each other. The long side mounting surface 15 is used to open connection holes for cable connection. The long side side 16 faces the opening side of the box body 1, and the long side mounting surface 15 faces the left and right sides of the box body 1. In this way, when the cable is connected to the long side mounting surface 15, the axis of the bolt that locks the cable extends in the left and right direction. The operator can directly observe the engagement state of the bolts and nuts from the opening side of the box body 1, which is convenient for observation and operation.

[0020] The guide rails 3 are installed horizontally inside the housing 1, specifically two parallel horizontal guide rails 3, one at the top and one at the bottom, respectively, on the inner wall of the back panel of the housing 1. The guide rails 3 can be connected to the inner wall of the back panel of the housing 1 by welding, or by bolts passing through mounting holes on the guide rails 3 and threaded holes on the back panel of the housing 1, thus ensuring that the guide rails 3 are immovable relative to the back panel of the housing 1. The cross-sectional shape of the guide rails 3 is dovetail-shaped or T-shaped to allow for a sliding fit with the slide block 4 and to prevent the slide block 4 from dislodging along the length perpendicular to the guide rail 3.

[0021] The slide block 4 is insulated from the copper busbar 2 and slides in conjunction with the guide rail 3. The slide block 4 has a mounting surface on the side facing the copper busbar 2, and through holes are formed at the top and bottom of the copper busbar 2. The slide block 4 is connected to the copper busbar 2 by insulating bolts. The insulating bolts pass sequentially through the mounting holes on the slide block 4 and the through holes on the copper busbar 2. An insulating sleeve is fitted over the shank of the insulating bolt, located between the bolt shank and the through hole of the copper busbar 2. An insulating washer is placed between the head of the insulating bolt and the copper busbar 2, and an insulating washer is also placed between the nut and the copper busbar 2. After tightening the nut, the copper busbar 2 is clamped between the insulating washer and the slide block 4 is separated from the copper busbar 2 by the insulating sleeve and the insulating washer, thus achieving an insulated connection between the slide block 4 and the copper busbar 2. A groove is formed on the side of the slide block 4 facing the guide rail 3. The cross-sectional shape of the groove matches the cross-sectional shape of the guide rail 3, such as a dovetail groove or a T-shaped groove. The slide groove is fitted onto the guide rail 3, so that the slide block 4 can only slide horizontally along the length direction of the guide rail 3, and cannot move or rotate along the direction perpendicular to the length of the guide rail 3.

[0022] Locking grooves 5 are spaced horizontally on the guide rail 3, each groove 5 having a vertical section 6 and a horizontal section 7. The vertical section 6 extends perpendicularly to the guide rail 3, and the horizontal section 7 extends along the guide rail 3. The vertical section 6 and the horizontal section 7 are connected to form an L-shaped groove. The locking grooves 5 can be located on the side of the guide rail 3 facing the slide 4, or they can extend through the guide rail 3. The width and depth of the vertical section 6 are set to allow the positioning head 9 to enter, and the width and height of the horizontal section 7 are set to allow the positioning head 9 to engage after rotation, and the groove wall of the horizontal section 7 can prevent the positioning head 9 from retracting axially along the locking rod 8.

[0023] The locking rod 8 is axially movable and rotatable, passing through the slide 4. A stepped through-hole is formed on the slide 4, comprising a small-diameter section near the guide rail 3 and a large-diameter section away from the guide rail 3. The locking rod 8 passes through the stepped through-hole, with the end of the locking rod 8 near the guide rail 3 extending out through the small-diameter section and connecting to the positioning head 9. The positioning head 9 is integrally formed with the locking rod 8, or the positioning head 9 is threaded to the end of the locking rod 8. The shape of the positioning head 9 matches the vertical section 6 and horizontal section 7 of the locking groove 5; for example, the positioning head 9 is a cylinder with radial protrusions on its outer circumference, or the positioning head 9 is a rectangular block. The positioning head 9 can enter the vertical section 6 axially along the locking rod 8, and when the locking rod 8 rotates, the positioning head 9 rotates accordingly and engages in the horizontal section 7. The end of the locking rod 8 away from the guide rail 3 extends out of the slide 4 and connects to the handle 14. The handle 14 can be threaded to the locking rod 8 or integrally formed with it. The handle 14 is rod-shaped or disc-shaped, making it easy for operators to hold and push, pull or rotate the locking lever 8.

[0024] An anti-rotation head 10 is located in the middle section of the locking rod 8. The anti-rotation head 10 is integrally formed with the locking rod 8, or it is sleeved on the locking rod 8 and connected to it via a key, allowing the anti-rotation head 10 to rotate synchronously with the locking rod 8. A rotating cavity 13 is provided within the slide 4, formed by the large-diameter section of the slide 4. The anti-rotation head 10 is located within the rotating cavity 13. The outer diameter of the anti-rotation head 10 is smaller than the inner diameter of the rotating cavity 13, allowing the anti-rotation head 10 to rotate freely within the rotating cavity 13. A pin hole 11 is provided on the anti-rotation head 10, extending radially, and its axis intersects with the axis of the locking rod 8. An elastic pin 12 is provided on the slide 4, comprising a pin body 121 and a spring 122. A mounting hole is provided on the slide 4, communicating with the rotating cavity 13. The pin 121 is slidably disposed within the mounting hole, and the spring 122 is sleeved on the pin 121. One end of the spring 122 abuts against the bottom wall of the mounting hole, and the other end abuts against the annular flange on the pin 121. In its natural state, the spring 122 pushes the pin 121 toward the rotating cavity 13, causing the pin 121 to tend to extend into the rotating cavity 13 and insert into the pin hole 11. The end of the pin 121 facing the rotating cavity 13 can be provided with a bevel. When the anti-rotation head 10 rotates, the outer edge of the anti-rotation head 10 can push the pin 121 back through the bevel. When the pin hole 11 is aligned with the pin 121, the pin 121 automatically inserts into the pin hole 11 under the action of the spring 122. The end of the pin 121 away from the rotating cavity 13 extends out of the outer wall of the slide 4, making it easy for the operator to pull.

[0025] The slide block 4, locking rod 8, positioning head 9, anti-rotation head 10, and elastic pin 12 are all made of insulating materials, such as insulating plastic or insulating resin; or these components are made of metal materials, but their surfaces are provided with an insulating layer, such as an insulating coating or insulating sleeve. In this way, the copper busbar 2 forms an insulating barrier between itself and the guide rail 3 and the housing 1, preventing the live copper busbar 2 from leaking current to the housing 1 or guide rail 3 through the mounting structure.

[0026] When adjusting the spacing of the copper busbars 2, the operator pulls the pin 121 of the elastic pin 12 outward, causing the pin 121 to overcome the spring force of the spring 122 and exit the pin hole 11 on the anti-rotation head 10. Then, the locking rod 8 is rotated in the opposite direction, causing the positioning head 9 to rotate from the horizontal section 7 of the locking groove 5 back to the vertical section 6. The locking rod 8 is then pulled outward again, causing the positioning head 9 to exit from the vertical section 6. At this time, the slide block 4 and the guide rail 3 resume their sliding engagement, and the slide block 4 can be pushed horizontally along the guide rail 3, thereby changing the spacing between the copper busbars 2. When the copper busbar 2 moves to the target position, the locking rod 8 is pushed in, causing the positioning head 9 to enter the vertical section 6 of the target locking groove 5. The elastic pin 12 is pulled outward again, and the locking rod 8 is rotated. The locking rod 8 causes the positioning head 9 to rotate from the vertical section 6 into the horizontal section 7, while the anti-rotation head 10 rotates synchronously in the rotating cavity 13. When the locking rod 8 is rotated to its position, the pin hole 11 on the anti-rotation head 10 aligns with the pin body 121 of the elastic pin 12. The elastic pin 12 is released, and the spring 122 pushes the pin body 121 into the pin hole 11, restricting the locking rod 8 from rotating in the opposite direction. At this time, the positioning head 9 is restricted by the groove wall of the horizontal section 7 and cannot retract axially along the locking rod 8, nor can the locking rod 8 reverse. The slide block 4 is reliably locked onto the guide rail 3. The two slide blocks 4 at the upper and lower parts of the copper busbar 2 respectively cooperate with the upper and lower guide rails 3. After being locked in the above manner, both ends of the copper busbar 2 are fixed, thereby achieving quick assembly and disassembly, horizontal spacing adjustment, and reliable locking of the copper busbar 2.

[0027] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A quick-assembly and disassembly low-voltage cable branch box, comprising a box body (1) and copper busbars (2) placed vertically and arranged at horizontal intervals, characterized in that, Also includes: The guide rail (3) is installed horizontally inside the housing (1); The slide (4) is insulated from the copper busbar (2), and the slide (4) is slidably engaged with the guide rail (3); Locking grooves (5) are spaced out on the guide rail (3) in the horizontal direction. The locking grooves (5) have a vertical section (6) and a horizontal section (7). The locking rod (8) is axially movable and rotatably mounted on the slide (4). The locking rod (8) has a positioning head (9) at one end near the guide rail (3). The positioning head (9) can enter the vertical section (6) and rotate into the horizontal section (7). An anti-rotation head (10) is provided in the middle section of the locking rod (8). The anti-rotation head (10) is provided with a pin hole (11), and the slide (4) is provided with an elastic pin (12). The elastic pin (12) can be inserted into the pin hole (11) to restrict the rotation of the locking rod (8).

2. The low-voltage cable branch box for quick assembly and disassembly according to claim 1, characterized in that, The guide rail (3) consists of two rails, one above the other. The upper and lower parts of the copper busbar (2) are provided with the slide block (4), and the upper and lower slide blocks (4) are respectively slidably engaged with the upper and lower guide rails (3).

3. A quick-assembly and disassembly low-voltage cable branch box according to claim 1, characterized in that, The elastic pin (12) includes a pin body (121) and a spring (122). The pin body (121) is slidably disposed on the slide (4), and the spring (122) abuts against the pin body (121) and the slide (4) so ​​that the pin body (121) tends to extend into the pin hole (11).

4. A quick-assembly and disassembly low-voltage cable branch box according to claim 1, characterized in that, The slide (4) is provided with a rotating cavity (13), and the anti-rotation head (10) is located in the rotating cavity (13) and can rotate with the locking rod (8).

5. A quick-assembly and disassembly low-voltage cable branch box according to claim 1, characterized in that, The locking rod (8) has a handle (14) at the end away from the guide rail (3).

6. A quick-assembly and disassembly low-voltage cable branch box according to claim 1, characterized in that, The copper busbar (2) has a long side mounting surface (15) and a long side side (16) that are perpendicular to each other. The long side side (16) faces the opening side of the box (1), and the long side mounting surface (15) faces the left and right sides of the box (1).

7. A quick-assembly and disassembly low-voltage cable branch box according to claim 1, characterized in that, The slide (4), locking rod (8), positioning head (9), anti-rotation head (10) and elastic pin (12) are all made of insulating material or have an insulating layer on their surface.

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