Fusion flexible conductive cable branch box multi-circuit switching integrated device

Abstract

The application relates to the technical field of power boxes, in particular to a cable branch box multi-circuit switching integrated device integrating flexible conductive connection, which comprises a circuit connector arranged in the interior of a power box body, the circuit connector is composed of a plurality of conductive strips arranged side by side at intervals, both ends of the conductive strips are in contact with conductive columns, and the outer ends of the conductive columns in the upper and lower rows are in contact with conductive blocks; the two conductive blocks are correspondingly clamped on the upper and lower ends of a mounting seat; both ends of the conductive strips are sleeved with connecting sleeves for being detachably inserted into the mounting seat to elastically contact the conductive columns and the conductive blocks. The limiting clamping pieces arranged on the connecting sleeves and the insertion holes on the mounting seat are elastically clamped and matched to realize the pressing type quick installation and the pincer type convenient removal of both ends of the conductive strips, the on-site construction and the later maintenance can be completed without the aid of special tools to realize the disassembly and assembly operation of the circuit, and the installation efficiency and the operation and maintenance convenience of the multi-circuit cable branch box are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution box technology, specifically to a multi-circuit transfer integrated device for cable branch boxes that incorporates flexible conductive connections. Background Technology

[0002] Cable branch boxes, as key equipment in power distribution networks for cable line branching and transfer, directly affect power supply safety and operation and maintenance efficiency due to the reliability of their internal circuit connection devices. Patent application CN202220104721.7 discloses a flexible conductive connection structure and an electrical cabinet. The flexible conductive connection structure includes: a flexible conductor and adhesive tape blocks. Two adhesive tape blocks are connected to the two ends of the conductor, used to connect the conductor cores at both ends to the required fixing points by adhesive bonding. This flexible conductive connection structure is used in the connection between the cabinet body and the cabinet door of an electrical cabinet. By connecting adhesive tape blocks to the flexible conductor, the conductor cores at both ends can be fixed to the cabinet body and door using the adhesive tape blocks. The connection method is simple and quick, and its application in electrical cabinets can improve production efficiency.

[0003] Currently, most common cable distribution boxes use rigid copper busbars and bolts to achieve electrical connection between the inlet and outlet ends. The existing patents that use adhesive tape for fixing cannot meet the long-term connection strength requirements of cable distribution boxes, and are prone to problems such as adhesive failure and loosening in harsh environments such as vibration, high temperature, and humidity. Furthermore, this solution lacks a modular positioning and locking structure, making it impossible to achieve rapid assembly and disassembly and reliable positioning in multi-circuit integrated scenarios, and is unsuitable for the combined requirements of structural stability and ease of maintenance for multi-circuit transfer devices in cable distribution boxes. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present invention aims to provide a multi-circuit transfer integrated device for cable branch boxes that integrates flexible conductive connections, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a multi-circuit transfer integrated device for cable branch boxes with integrated flexible conductive connections, including a circuit connector disposed inside the electrical box body for connecting the live wire inlet and the cable terminal; the circuit connector is composed of several conductive strips arranged side by side at intervals, with conductive posts contacting both ends of the conductive strips, and conductive blocks contacting the outer ends of the upper and lower rows of conductive posts; a mounting base is fixedly disposed on the inner wall of the electrical box body for mounting the circuit connector, and two conductive blocks are respectively snapped into the upper and lower ends of the mounting base; copper busbars are fixedly disposed on the inner walls of both sides of the electrical box body for connecting the neutral wire inlet and the cable return end; connecting sleeves are sleeved on both ends of the conductive strips for detachable insertion into the mounting base to trigger elastic contact between the conductive posts and the conductive blocks.

[0006] As a further improvement to this technical solution, the mounting base has several symmetrically arranged insertion holes at the upper and lower edges of the front, and the connecting sleeve has a boss on one side of the middle part that is tightly fitted with one end of the conductive post.

[0007] As a further improvement to this technical solution, a limiting card is symmetrically provided on the other side of the middle part of the connecting sleeve. The limiting card is an arc plate and is coaxially arranged with the boss. The limiting card is adapted to be inserted into the socket.

[0008] As a further improvement to this technical solution, the outer side wall of the limiting card has a protruding arc strip in the middle, which is used to lock the inner end of the insertion hole to form a limiting.

[0009] As a further improvement to this technical solution, an electric contact ring is fixedly provided at the outer end of the conductive post. The electric contact ring is made of copper and has a circular structure.

[0010] As a further improvement to this technical solution, after the connecting sleeve is inserted and positioned with the mounting base, the distance between the outer end of the conductive post and the conductive block is smaller than the diameter of the contact ring.

[0011] As a further improvement to this technical solution, the conductive block is covered with an isolation sleeve, and the front side of the isolation sleeve has several isolation tubes protruding from it. The isolation tubes communicate with the inner cavity of the isolation sleeve, and the conductive post is adapted to be inserted into the isolation tube.

[0012] As a further improvement to this technical solution, connecting pieces are fixedly connected to both ends of the conductive strip, and the connecting pieces are sleeved and fitted with one end of the conductive post.

[0013] As a further improvement to this technical solution, the conductive block has protruding terminals on both sides, wherein the upper conductive block is connected to the live wire inlet terminal through the terminals.

[0014] As a further improvement to this technical solution, the conductive block located below is connected to the cable terminal via a power connection terminal.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This cable branch box multi-circuit transfer integrated device with flexible conductive connection forms a flexible conductive path by several conductive strips arranged side by side and intervals, and forms an elastically compensable contact structure with conductive columns and conductive blocks. It absorbs the mechanical stress generated by the thermal expansion and contraction of the cable and avoids the installation and alignment problems caused by rigid connection, thereby significantly improving the long-term operational reliability of the device under thermal cycling conditions.

[0017] 2. This integrated multi-circuit transfer device for cable branch boxes with flexible conductive connections uses a limiting card on the connecting sleeve to form an elastic snap-fit ​​with the socket on the mounting base. Combined with the chamfered guide structure on the outer port of the socket, it enables quick installation by pressing at both ends of the conductive strip and convenient removal by clamping. This allows the installation and removal of the circuits to be completed without the need for special tools during on-site construction and subsequent maintenance, thereby significantly improving the installation efficiency and maintenance convenience of multi-circuit cable branch boxes.

[0018] 3. This integrated multi-circuit transfer device for cable branch boxes with flexible conductive connection uses an electric contact ring with extrusion deformation capability fixed at the outer end of the conductive post. The distance between the conductive post and the conductive block is smaller than the diameter of the electric contact ring, forming an interference fit elastic contact interface. After the connecting sleeve is inserted and positioned with the mounting base, the electric contact ring is deformed under pressure and fully fits the conductive block, thereby eliminating the contact pressure fluctuation caused by vibration or thermal stress in traditional bolt connections and ensuring long-term stability of contact resistance. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, will select various possible shapes and proportions to implement the invention according to specific circumstances.

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

[0021] Figure 2 For the present invention Figure 1 The main view;

[0022] Figure 3 This is a schematic diagram of the overall assembly structure of the circuit connector and mounting base of the present invention;

[0023] Figure 4 This is a schematic diagram of a partial assembly structure of the circuit connector and mounting base of the present invention;

[0024] Figure 5 This is a schematic diagram of the circuit connector assembly structure of the present invention;

[0025] Figure 6 This is an assembly disassembly diagram of the mounting base of the present invention;

[0026] Figure 7 This is an exploded view of the conductive strip assembly of the present invention;

[0027] Figure 8 This is a schematic diagram of the assembly structure of the connecting sleeve and conductive post of the present invention;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 100. Electrical box body; 110. Mounting base; 111. Socket; 112. Isolation window; 120. Copper busbar;

[0030] 200. Circuit connector; 210. Conductive strip; 211. Connecting sleeve; 212. Boss; 213. Connecting piece; 214. Limiting card; 220. Conductive post; 221. Contact ring; 230. Conductive block; 231. Electrical terminal; 240. Isolation sleeve; 241. Isolation tube. Detailed Implementation

[0031] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art will conceive of any possible variations of the invention, all of which should be considered within the scope of the invention. The terms "installation" and "connection" should be interpreted broadly, referring to direct connection as well as indirect connection through an intermediate medium.

[0032] The terms "central axis," "vertical," "horizontal," "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0033] Please see Figures 1-2 As shown, the present invention provides a multi-circuit transfer integrated device for cable branch boxes with integrated flexible conductive connections, including a circuit connector 200 disposed inside the electrical box body 100 for connecting the live wire inlet and the cable terminal; a mounting base 110 is fixedly disposed on the inner wall of the electrical box body 100 for mounting the circuit connector 200; and copper busbars 120 are fixedly disposed on the inner walls of both sides of the electrical box body 100 for connecting the neutral wire inlet and the cable return.

[0034] Specifically, such as Figures 3-8As shown, the loop connector 200 is composed of several conductive strips 210 arranged side by side at intervals. Both ends of the conductive strips 210 are connected to conductive posts 220, and the outer ends of the upper and lower rows of conductive posts 220 are connected to conductive blocks 230. The conductive strips 210 are made of copper wire braided strips, and the conductive blocks 230 are made of copper sheets, both of which are existing technologies. The two conductive blocks 230 are respectively snapped onto the upper and lower ends of the mounting base 110. Both ends of the conductive strips 210 are fitted with connecting sleeves 211 for detachable insertion into the mounting base 110, triggering the elastic contact between the conductive posts 220 and the conductive blocks 230.

[0035] Furthermore, the mounting base 110 has several symmetrically arranged insertion holes 111 at its upper and lower front edges. The length of the conductive strip 210 is greater than the distance between the upper and lower pairs of insertion holes 111, forming a flexible connection. A boss 212 is provided on one side of the middle portion of the connecting sleeve 211, which tightly engages with one end of the conductive post 220. A limiting card 214 is symmetrically arranged on the other side of the middle portion of the connecting sleeve 211. The limiting card 214 is an arc-shaped plate and coaxially arranged with the boss 212. The limiting card 214 is adapted to be inserted into the insertion hole 111. The connecting sleeve 211, the boss 212, and the limiting card 214 are integrally molded from engineering plastic. An isolation window 112 is provided in the middle area of ​​the front of the mounting base 110 to prevent contact with the conductive strip 210 and to save material costs.

[0036] The outer wall of the limiting card 214 has a protruding arc strip in the middle, which is used to lock the inner end of the socket 111 to form a limit. The outer port of the socket 111 has a beveled angle. When the worker takes the boss 212, inserts a pair of limiting cards 214 into the socket 111 and presses it to change the path of the arc strip on the outer wall of the limiting card 214 along the bevel, causing the limiting card 214 to shrink and deform. The whole thing passes through the socket 111 and then rebounds to reset the limiting card 214, forming a state where the arc strip hooks the inner port of the socket 111, that is, one end of the conductive strip 210 is installed instantly. When it needs to be removed, the pair of limiting cards 214 are clamped and deformed by inserting pliers from the port of the mounting base 110, and the boss 212 is pulled outward until the entire connecting sleeve 211 is pulled out.

[0037] Furthermore, to ensure stable contact and energization between the conductive post 220 and the conductive block 230, an electric contact ring 221 is fixedly provided at the outer end of the conductive post 220 by welding. The electric contact ring 221 is made of copper and has a circular structure, giving it the ability to be deformed under pressure to ensure full contact. After the connecting sleeve 211 is inserted and positioned into the mounting base 110, the distance between the outer end of the conductive post 220 and the conductive block 230 is smaller than the diameter of the electric contact ring 221, allowing the electric contact ring 221 to be compressed and fully contact the conductive block 230.

[0038] Furthermore, the conductive block 230 is externally encased in an isolation sleeve 240, which is made of engineering plastic to ensure good insulation, flame retardancy, impact resistance and weather resistance; the front side of the isolation sleeve 240 is provided with several isolation tubes 241, which are in communication with the inner cavity of the isolation sleeve 240, and the conductive post 220 is adapted to be inserted into the isolation tubes 241.

[0039] Connecting pieces 213 are fixedly connected to both ends of the conductive strip 210. The connecting pieces 213 are sleeved and fitted with one end of the conductive post 220. The connecting piece 213 is composed of a square piece and a round hole piece. The square piece is riveted to the connecting sleeve 211, and the round hole piece is placed at the boss 212. The conductive post 220 is inserted into the boss 212 and passes through the connecting piece 213 to form an electrical contact with the conductive strip 210.

[0040] Furthermore, the conductive block 230 has protruding terminals 231 on both sides. The upper conductive block 230 is connected to the live wire inlet terminal through the terminal 231, and the lower conductive block 230 is connected to the cable terminal through the terminal 231.

[0041] During installation of the cable branch box multi-circuit transfer integrated device of the present invention, which integrates flexible conductive connection, one end of the conductive post 220 is first inserted into the central cavity of the boss 212 of the connecting sleeve 211 and passes through the connecting piece 213. Then, the assembled conductive block 230 and the isolation sleeve 240 are snapped into the open end of the mounting base 110, and the isolation tube 241 is aligned with the socket 111. Then, the conductive post 220 is inserted into the socket 111 and the isolation tube 241 until the limiting card 214 passes through the socket 111. After resetting, the arc strip hooks onto the inner port of the socket 111 to limit the movement; at the same time, the contact ring 221 contacts the conductive block 230 and deforms to form a fully contacted and energized state; then the mounting base 110 is fixed to the inner wall of the electrical box body 100 with bolts, the live wire is connected to the upper terminal 231, the cable terminal is connected to the lower terminal 231, and the neutral wire and the cable return terminal are connected to the copper busbar 120 on one side of the electrical box body 100, and the other copper busbar 120 is connected for protection.

[0042] It should be noted that the fixed connection and fixing method of the present invention are achieved by conventional fixing means such as bolt connection, welding, or bonding that are compatible with each other. These are existing technologies and will not be described in detail here. The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-circuit transfer integrated device for cable branch boxes incorporating flexible conductive connections, characterized in that: The circuit connector (200) is located inside the electrical box body (100) and is used to connect the live wire inlet and the cable terminal. The circuit connector (200) is composed of several conductive strips (210) arranged side by side at intervals. Both ends of the conductive strips (210) are connected to conductive posts (220), and the outer ends of the upper and lower rows of conductive posts (220) are connected to conductive blocks (230). The inner wall of the electrical box body (100) is fixedly provided with a mounting base (110) for installing the circuit connector (200). Two conductive blocks (230) are respectively snapped into the upper and lower ends of the mounting base (110). The inner walls on both sides of the electrical box body (100) are fixedly provided with copper wire busbars (120) for connecting the neutral wire inlet and the cable return end. Both ends of the conductive strips (210) are fitted with connecting sleeves (211) for detachable insertion into the mounting base (110) to trigger the conductive posts (220) to make elastic contact with the conductive blocks (230).

2. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 1, characterized in that: The mounting base (110) has several symmetrically arranged insertion holes (111) at the upper and lower edges of the front, and the connecting sleeve (211) has a boss (212) on one side of the middle part that is tightly fitted to one end of the conductive post (220).

3. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 2, characterized in that: The connecting sleeve (211) is symmetrically provided with a limiting card (214) on the other side of the middle. The limiting card (214) is an arc plate and is coaxially arranged with the boss (212). The limiting card (214) is adapted to be inserted into the socket (111).

4. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 3, characterized in that: The outer side wall of the limiting card (214) has a protruding arc strip in the middle, which is used to lock the inner end of the insertion hole (111) to form a limit.

5. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 4, characterized in that: The outer end of the conductive post (220) is fixed with a contact ring (221), which is made of copper and has a circular structure.

6. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 5, characterized in that: After the connecting sleeve (211) is inserted and positioned with the mounting base (110), the distance between the outer end of the conductive post (220) and the conductive block (230) is less than the diameter of the contact ring (221).

7. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 6, characterized in that: The conductive block (230) is covered by an isolation sleeve (240). The front side of the isolation sleeve (240) is provided with several isolation tubes (241). The isolation tubes (241) are in communication with the inner cavity of the isolation sleeve (240). The conductive post (220) is adapted to be inserted into the isolation tubes (241).

8. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 7, characterized in that: The conductive strip (210) is fixedly connected to two ends of a connecting piece (213), and the connecting piece (213) is sleeved with one end of the conductive post (220).

9. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 8, characterized in that: The conductive block (230) has protruding terminals (231) on both sides, wherein the upper conductive block (230) is connected to the live wire inlet terminal through the terminals (231).

10. The cable branch box multi-circuit transfer integrated device with integrated flexible conductive connection according to claim 9, characterized in that: The conductive block (230) located below is connected to the cable terminal via the power terminal (231).

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