A distribution box convenient to maintain and a method of using the same

Abstract

The application discloses a distribution box convenient to maintain and a use method thereof, which comprises a box body, a box door and a mounting back plate; the mounting back plate is arranged in the box body, and a controller and a wiring terminal row are arranged on the mounting back plate; an adjusting assembly is arranged in the box body and at the back side of the mounting back plate; the adjusting assembly comprises a fixing frame arranged on the inner side wall of the box body, a telescopic air cylinder arranged in the fixing frame and a ball bearing connected to the power output end of the telescopic air cylinder; a supporting seat is arranged at the back side of the mounting back plate, a round hole is formed in the supporting seat, and the ball bearing is inserted into the round hole; the adjusting assembly is arranged, the mounting back plate carrying the controller and the wiring terminal row is pushed out of the box body by the telescopic air cylinder, and the multi-angle rotation of the mounting back plate is realized by the spherical surface cooperation between the ball bearing and the round hole of the supporting seat, so that the maintenance personnel can maintain the electrical elements in the open space outside the box body, and the maintenance operation space and the observation angle are enlarged.

Description

Technical Field

[0001] This invention relates to a power distribution box that is easy to maintain and its method of use. Background Technology

[0002] Distribution boxes are crucial devices in power systems used to distribute electrical energy, control circuit connections, and protect lines and equipment. Traditional distribution boxes are typically wall-mounted, with an internal mounting plate fixed to the box body. Controllers, terminal blocks, and other electrical components are housed on this mounting plate. When maintenance, repair, or replacement of internal components is required, personnel must reach inside the box. Due to the limited space and severely restricted viewing angle, it's difficult for personnel to observe and access the components from different angles, leading to inconvenience, inefficiency, and the safety hazard of accidentally touching live parts. Furthermore, if the box door accidentally closes during maintenance, it can further hinder the work and even cause injury. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a maintenance-friendly distribution box and its usage method. By incorporating an adjustment component, a telescopic cylinder pushes the mounting backplate, which carries the controller and terminal blocks, out of the box. Multi-angle rotation of the mounting backplate is achieved through the spherical engagement of ball bearings and circular holes on the support base. This allows maintenance personnel to repair electrical components in an open space outside the box, completely eliminating the limitations of the confined space inside the box. This significantly expands the maintenance operating space and observation angle, greatly improving maintenance convenience and work efficiency. A support component between the box door and the box body allows the door to be suspended and supported at any opening angle, freeing the maintenance personnel's hands for operation. Furthermore, by incorporating a limit bolt, spring, and insertion holes on the side wall of the box body within the hinge, the door can be mechanically locked after opening, effectively preventing accidental closure during maintenance and further ensuring the safety and continuity of maintenance operations.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a power distribution box that is easy to maintain, comprising a box body, a box door, and a mounting back plate;

[0005] The mounting backplate is located inside the enclosure, and the mounting backplate is equipped with a controller and a terminal block.

[0006] Inside the housing, and on the back side of the mounting back plate, there is an adjustment assembly. The adjustment assembly includes a fixed frame installed on the inner side wall of the housing, a telescopic cylinder installed in the fixed frame, and a ball bearing connected to the power output end of the telescopic cylinder.

[0007] A support base is provided on the back side of the mounting back plate, and a circular hole is provided on the support base, into which the ball bearing is inserted;

[0008] The telescopic cylinder is configured to push the mounting backplate toward the opening of the housing so that the mounting backplate extends at least partially out of the housing, and the ball bearings are able to rotate within the circular hole so that the mounting backplate can rotate relative to the housing.

[0009] As a preferred embodiment of the present invention, a connecting seat is installed on the inner side wall of the box body, and a support assembly is provided between the box door and the box body. The support assembly includes a hydraulic support rod, an upper ball joint and a lower elbow joint. The upper ball joint is snapped onto the box door, and the lower elbow joint is hinged to the connecting seat.

[0010] As a preferred embodiment of the present invention, when the cabinet door is opened to any angle, the support component can provide a suspension support force to the cabinet door so that the cabinet door remains at that opening angle.

[0011] As a preferred embodiment of the present invention, the door is provided with a hinge facing one side of the box body, a limit bolt is inserted into the hinge, and the inner side wall of the box body is provided with a socket adapted to the limit bolt.

[0012] As a preferred embodiment of the present invention, a spring is sleeved on the outer side of one end of the limiting bolt located inside the hinge. When the door is opened, the limiting bolt is pressed to insert it into the socket, thereby further enhancing the support for the door.

[0013] As a preferred embodiment of the present invention, the terminal block is provided with at least two sets, and multiple sets of terminal blocks are arranged side by side in the horizontal direction on the mounting back plate.

[0014] As a preferred embodiment of the present invention, the bottom of the outer wall of the box is provided with wall-mounting mounting ears, and the box is fixedly mounted on the wall by means of the wall-mounting mounting ears.

[0015] As a preferred embodiment of the present invention, the bottom of the housing is provided with a cable through hole for the cable to pass through.

[0016] As a preferred embodiment of the present invention, the adjustment assembly further includes two positioning seats disposed on the inner side wall of the box, and the fixing frame is disposed between the two positioning seats;

[0017] And a protruding head, which connects the power output end of the telescopic cylinder to the ball bearing.

[0018] The present invention also provides a technical solution, a method for using a distribution box that is easy to maintain, the specific steps of which are as follows:

[0019] S1. Rotate the door around its hinge axis with the box body to open it to the target angle, and use the support assembly to provide a suspension support force for the door so that the door is kept at the opening angle; then press the limit bolt set in the door hinge to compress the spring sleeved on the outside of the limit bolt, so that the end of the limit bolt is inserted into the corresponding insertion hole on the inner side wall of the box body, so as to further lock the opening state of the door, thereby fully exposing the mounting back plate inside the box body;

[0020] S2. Start the adjustment component set on the back side of the mounting back plate, control the telescopic cylinder in the fixing frame to move, so that the power output end of the telescopic cylinder extends in the direction towards the box opening. The power output end applies axial thrust to the support seat on the back side of the mounting back plate in sequence through the protrusion and the ball, thereby pushing the entire mounting back plate to slide horizontally towards the box opening.

[0021] S3. Under the continuous push of the telescopic cylinder, the mounting back plate gradually detaches from the internal containment space of the box, and at least part of the working surface carrying the controller and terminal block extends to the outside of the box, thereby transferring the controller and terminal block from the closed space inside the box to the open space outside the box.

[0022] S4. Using the spherical insertion fit between the ball and the circular hole on the support as a rotating pair, apply torque to the mounting back plate to make the ball rotate in multiple directions in the circular hole, thereby driving the mounting back plate to adjust the pitch angle or horizontal position relative to the box until the controller and terminal block are in the target posture that is easy for maintenance personnel to observe and operate.

[0023] S5. In the open space outside the enclosure, under the target posture after the mounting backplate has been angled, disassemble, test or replace the controller, and perform wiring, fastening or troubleshooting work on the external cables on the terminal block.

[0024] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting an adjustment component, a telescopic cylinder is used to push the mounting back plate carrying the controller and terminal block out of the enclosure. The mounting back plate rotates at multiple angles through the spherical engagement of the ball bearings and the circular holes on the support base. This allows maintenance personnel to repair electrical components in an open space outside the enclosure, completely eliminating the limitations of the confined space inside the enclosure. This significantly expands the maintenance operation space and observation angle, greatly improving maintenance convenience and work efficiency. Furthermore, by setting a support component between the door and the enclosure, the door can be suspended and supported at any opening angle, allowing maintenance personnel to work with their hands free. Simultaneously, by setting a limit bolt, spring, and insertion holes on the side wall of the enclosure within the hinge, the door can be mechanically locked after opening, effectively preventing accidental closure during maintenance and further ensuring the safety and continuity of maintenance operations. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the connector of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the fixing frame of the present invention;

[0028] Figure 4 This is a schematic diagram of the positioning seat of the present invention;

[0029] Figure 5 This is a schematic diagram of the support base of the present invention;

[0030] Figure 6 This is a schematic diagram of the hydraulic support rod of the present invention;

[0031] Figure 7 For the present invention Figure 1 Enlarged structural diagram at point A;

[0032] Figure 8 This is a schematic diagram of the structure of the ball bearing of the present invention;

[0033] Figure 9 This is a schematic diagram of the wall-mounted mounting ears of the present invention.

[0034] The components include: 1. Cabinet; 2. Cabinet door; 3. Mounting back panel; 4. Controller; 5. Terminal block; 6. Fixing frame; 7. Telescopic cylinder; 8. Ball bearing; 9. Support base; 10. Round hole; 11. Connecting seat; 12. Hydraulic support rod; 13. Upper ball joint; 14. Lower elbow joint; 15. Hinge; 16. Limit bolt; 17. Spring; 18. Wall-mounted mounting lug; 19. Cable through hole; 20. Positioning seat; 21. Protruding head. Detailed Implementation

[0035] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0036] Example:

[0037] like Figure 1 - Figure 9As shown, this embodiment proposes a maintenance-friendly distribution box, including a box body 1, a door 2, and a mounting back plate 3. The box body 1 is a rectangular shell structure with an open front end. A wall-mounting lug 18 is provided at the bottom of its outer wall. The box body 1 is fixedly installed on a wall or other supporting surface via the wall-mounting lug 18, achieving wall-mounted installation. A cable through-hole 19 is provided at the bottom of the box body 1 for external cables to pass through and connect to internal electrical components.

[0038] The door 2 is hinged to the front opening of the box body 1 via a hinge shaft, allowing the door 2 to open and close relative to the box body 1. A connecting seat 11 is installed on the inner wall of the box body 1, and a support assembly is provided between the door 2 and the box body 1. The support assembly includes a hydraulic support rod 12, an upper ball joint 13, and a lower elbow joint 14. The upper ball joint 13 is snapped onto the inner wall of the door 2, and the lower elbow joint 14 is hinged to the connecting seat 11 on the inner wall of the box body 1. The upper and lower ends of the hydraulic support rod 12 are connected to the upper ball joint 13 and the lower elbow joint 14, respectively. When the door 2 is rotated open around the hinge shaft to any target angle, the hydraulic support rod 12 provides continuous suspension support force to the door 2, keeping it stably at that opening angle without requiring manual assistance from maintenance personnel, thus freeing their hands for subsequent maintenance operations.

[0039] To further enhance the stability of the door 2 after it is opened and prevent it from accidentally closing due to external force or its own weight during maintenance, a hinge 15 facing the side of the cabinet 1 is provided on the door 2. A limit bolt 16 is inserted into the hinge 15, and a spring 17 is sleeved on the outer side of one end of the limit bolt 16 inside the hinge 15. The inner wall of the cabinet 1 has a socket that matches the limit bolt 16. When the door 2 is opened to the target angle, the maintenance personnel press the limit bolt 16 inward, compressing the spring 17, so that the end of the limit bolt 16 is inserted into the corresponding socket on the inner wall of the cabinet 1, thereby mechanically locking the door 2 and further improving the reliability of the support for the door 2.

[0040] The mounting backplate 3 is located inside the enclosure 1, and it houses the controller 4 and terminal blocks 5. The controller 4 is positioned in the upper part of the mounting backplate 3, while the terminal blocks 5 are positioned below it. At least two sets of terminal blocks 5 are provided, arranged horizontally side-by-side on the mounting backplate 3 for connecting external cables. This vertically partitioned layout makes the arrangement of electrical components more rational and orderly, facilitating daily management and subsequent maintenance.

[0041] An adjustment assembly is located inside the housing 1 and on the back side of the mounting back plate 3. The adjustment assembly includes two positioning seats 20 on the inner wall of the housing 1, with a fixing frame 6 between the two positioning seats 20. A telescopic cylinder 7 is installed inside the fixing frame 6. The power output end of the telescopic cylinder 7 is connected to a protrusion 21, and a ball bearing 8 is connected to the protrusion 21. A support seat 9 is located on the back side of the mounting back plate 3, and a circular hole 10 is opened on the back side of the support seat 9. The ball bearing 8 is inserted into the circular hole 10 to form a spherical rotating pair.

[0042] When maintenance is required on the controller 4 and terminal block 5 on the mounting backplate 3, the telescopic cylinder 7 is activated. The power output end of the telescopic cylinder 7 extends towards the opening of the housing 1. The power output end applies axial thrust to the support base 9 through the protrusion 21 and the ball bearing 8, thereby pushing the mounting backplate 3 horizontally towards the opening. Under the continuous pushing of the telescopic cylinder 7, the mounting backplate 3 gradually detaches from the internal space of the housing 1, and at least part of the working surface carrying the controller 4 and terminal block 5 extends to the outside of the housing 1, thereby transferring the controller 4 and terminal block 5 from the enclosed space inside the housing 1 to the open space outside the housing 1.

[0043] After the mounting backplate 3 extends out of the housing 1, maintenance personnel can apply torque to the mounting backplate 3. Because the ball bearing 8 and the circular hole 10 are in a spherical fit, the ball bearing 8 can rotate freely in multiple directions within the circular hole 10, thereby adjusting the mounting backplate 3's pitch or horizontal position relative to the housing 1. Maintenance personnel can rotate the mounting backplate 3 to a target posture that facilitates observation and operation, allowing for maintenance and inspection of the controller 4 and terminal block 5 from different angles.

[0044] Rotate the door 2 around its hinge axis with the body 1 to open it to the target angle. Use the support assembly to provide a suspension support force for the door 2 so that the door 2 is kept at the opening angle. Then press the limit bolt 16 set in the hinge 15 of the door 2 to compress the spring 17 sleeved on the outside of the limit bolt 16, so that the end of the limit bolt 16 is inserted into the corresponding insertion hole on the inner side wall of the body 1 to further lock the opening state of the door 2, thereby fully exposing the mounting back plate 3 inside the body 1.

[0045] The adjustment assembly set on the back side of the mounting back plate 3 is activated, and the telescopic cylinder 7 in the fixing frame 6 is controlled to move, so that the power output end of the telescopic cylinder 7 extends in the direction toward the opening of the box 1. The power output end applies axial thrust to the support seat 9 on the back side of the mounting back plate 3 through the protrusion 21 and the ball 8 in sequence, thereby pushing the entire mounting back plate 3 to slide horizontally in the direction of the opening.

[0046] Under the continuous push of the telescopic cylinder 7, the mounting back plate 3 gradually detaches from the internal space of the housing 1, and at least part of the working surface of the controller 4 and the terminal block 5 extends to the outside of the housing 1, thereby transferring the controller 4 and the terminal block 5 from the closed space inside the housing 1 to the open space outside the housing 1.

[0047] Using the spherical insertion fit between the ball bearing 8 and the circular hole 10 on the support base 9 as a rotating pair, torque is applied to the mounting back plate 3, causing the ball bearing 8 to rotate in multiple directions within the circular hole 10, thereby driving the mounting back plate 3 to adjust the pitch angle or horizontal position relative to the housing 1 until the controller 4 and the terminal block 5 are in a target posture that is convenient for maintenance personnel to observe and operate.

[0048] In the open space outside the enclosure 1, under the target posture after the mounting backplate 3 has been angled, the controller 4 is disassembled, inspected or replaced, and the external cables on the terminal block 5 are connected, tightened or checked.

[0049] In summary, by adjusting the mounting backplate 3 to push it out of the enclosure 1 and achieve multi-angle rotation, and with the suspension support and mechanical locking of the enclosure door 2, the problems of small maintenance space, limited viewing angle, and easy accidental closure of the enclosure door 2 in traditional distribution boxes are effectively solved, significantly improving the convenience, safety and work efficiency of distribution box maintenance.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power distribution box that is easy to maintain, characterized in that, Includes the box body (1), the box door (2), and the mounting back panel (3); The mounting backplate (3) is located inside the housing (1), and the mounting backplate (3) is provided with a controller (4) and a terminal block (5). Inside the housing (1) and on the back side of the mounting back plate (3), there is an adjustment assembly. The adjustment assembly includes a fixed frame (6) installed on the inner side wall of the housing (1), a telescopic cylinder (7) installed in the fixed frame (6), and a ball bearing (8) connected to the power output end of the telescopic cylinder (7). The back of the mounting back plate (3) is provided with a support base (9), and a round hole (10) is provided on the support base (9), and the ball (8) is inserted into the round hole (10). The telescopic cylinder (7) is configured to push the mounting back plate (3) toward the opening of the box (1) so that the mounting back plate (3) extends at least partially out of the box (1) and the ball (8) can rotate in the round hole (10) so that the mounting back plate (3) can rotate relative to the box (1).

2. The easily maintainable distribution box according to claim 1, characterized in that: A connecting seat (11) is installed on the inner side wall of the box (1). A support assembly is provided between the box door (2) and the box (1). The support assembly includes a hydraulic support rod (12), an upper ball joint (13) and a lower elbow joint (14). The upper ball joint (13) is snapped onto the box door (2), and the lower elbow joint (14) is hinged onto the connecting seat (11).

3. The easily maintainable distribution box according to claim 2, characterized in that: When the door (2) is opened to any angle, the support assembly can provide a suspension support force to the door (2) so that the door (2) is kept at the opening angle.

4. The easily maintainable distribution box according to claim 1, characterized in that: The door (2) is provided with a hinge (15) facing the side of the box body (1), and a limit bolt (16) is inserted into the hinge (15). The inner side wall of the box body (1) is provided with a socket that matches the limit bolt (16).

5. The easily maintainable distribution box according to claim 4, characterized in that: The limiting bolt (16) is located inside the hinge (15) with a spring (17) sleeved on the outer side. When the door (2) is opened, the limiting bolt (16) is pressed to insert into the socket, thereby further enhancing the support of the door (2).

6. The easily maintainable distribution box according to claim 1, characterized in that: The terminal block (5) is provided with at least two sets, and multiple sets of terminal blocks (5) are arranged side by side in the horizontal direction on the mounting back plate (3).

7. The easily maintainable distribution box according to claim 1, characterized in that: The bottom of the outer wall of the box (1) is provided with a wall-mounting mounting ear (18), and the box (1) is fixedly installed on the wall by means of the wall-mounting mounting ear (18).

8. The easily maintainable distribution box according to claim 1, characterized in that: The bottom of the housing (1) is provided with a cable through hole (19) for cables to pass through.

9. The easily maintainable distribution box according to claim 1, characterized in that: The adjustment assembly also includes two positioning seats (20) disposed on the inner side wall of the housing (1), and the fixing frame (6) is disposed between the two positioning seats (20); And a protrusion (21), which is connected between the power output end of the telescopic cylinder (7) and the ball (8).

10. A method for using a distribution box that is easy to maintain, characterized in that: Applied to the easily maintainable distribution box as described in any one of claims 1-9, S1. Rotate the door (2) around its hinge axis with the box body (1) to open it to the target angle. Use the support assembly to provide a suspension support force to the door (2) so that the door (2) is kept at the opening angle. Then press the limit bolt (16) set in the hinge (15) of the door (2) to compress the spring (17) sleeved on the outside of the limit bolt (16) so that the end of the limit bolt (16) is inserted into the corresponding insertion hole on the inner side wall of the box body (1) to further lock the opening state of the door (2) and thus completely expose the mounting back plate (3) inside the box body (1). S2. Start the adjustment component set on the back side of the mounting back plate (3) and control the telescopic cylinder (7) in the fixing frame (6) to move, so that the power output end of the telescopic cylinder (7) extends in the direction towards the box opening of the box body (1). The power output end applies axial thrust to the support seat (9) on the back side of the mounting back plate (3) in sequence through the protrusion (21) and the ball (8), thereby pushing the mounting back plate (3) to slide horizontally in the direction of the box opening. S3. Under the continuous push of the telescopic cylinder (7), the mounting back plate (3) gradually detaches from the internal space of the housing (1) and causes the working surface carrying the controller (4) and the terminal block (5) to extend at least partially to the outside of the housing (1), thereby transferring the controller (4) and the terminal block (5) from the closed space inside the housing (1) to the open space outside the housing (1). S4. Using the spherical insertion fit between the ball (8) and the circular hole (10) on the support base (9) as a rotating pair, apply torque to the mounting back plate (3) to make the ball (8) rotate in multiple directions in the circular hole (10), thereby driving the mounting back plate (3) to adjust the pitch angle or horizontal position relative to the housing (1) until the controller (4) and the terminal block (5) are in the target posture that is easy for maintenance personnel to observe and operate. S5. In the open space outside the enclosure (1), under the target posture after the angle of the mounting back plate (3) is adjusted, the controller (4) is disassembled, inspected or replaced, and the external cables on the terminal block (5) are connected, tightened or checked.

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