Anti-misplug distribution box based on quick plug type wiring terminal

Abstract

The invention relates to the technical field of distribution boxes, and discloses an anti-misplug distribution box based on a quick plug type wiring terminal, which comprises a distribution box body and a wiring terminal, the wiring terminal adopts a separable structure and is fixedly connected with a guide rail in the distribution box body, and a circular groove is formed in an interface of the wiring terminal. And a mounting sleeve is arranged in the circular groove, a clamping set is arranged on the outer wall of the mounting sleeve, and an abutting set and a limiting set are arranged in the mounting sleeve in the front-back direction. According to the anti-misplug distribution box based on the rapid plugging type wiring terminal, the problems that in the prior art, when a traditional wiring terminal adopts a screw crimping or common clamping mode to realize large-diameter single copper wire connection, enough contact pressure and connection strength are difficult to provide, and the connection is difficult to realize can be effectively solved; and the problem that the connection reliability is finally affected due to loose connection caused by factors such as uncompact crimping and external vibration due to the rigidity of a single copper wire in a screw crimping and common clamping mode is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution boxes, and particularly relates to an anti-misinsertion distribution box based on quick pluggable terminal blocks. Background Art

[0002] The distribution box is a key device for power distribution and control, widely used in various buildings and industrial facilities. Its main function is to receive electric energy from the upper-level transformer. Its internal structure mainly includes a box body, a guide rail, a circuit breaker, a leakage protector, and various terminal blocks, etc. The terminal block is a key component for connecting wires and realizing circuit conduction, and is usually installed on the guide rail inside the distribution box through fasteners.

[0003] During the actual use of the distribution box, the connection quality between the terminal block and the wire is directly related to the reliability and safety of the entire distribution box circuit. With the growth of electricity demand, large-diameter single copper wires are increasingly used for power transmission in more and more occasions. Due to the large diameter of the single copper wire, its wire diameter is thick and its hardness is high. Traditional terminal blocks usually use screw crimping or ordinary clamping methods to achieve connection. However, when facing large-diameter single copper wires, these methods are difficult to provide sufficient contact pressure and connection strength. Screw crimping and ordinary clamping methods are prone to insufficient crimping due to the rigidity of the single copper wire and connection loosening caused by external vibrations and other factors, ultimately affecting the connection reliability. Summary of the Invention

[0004] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides an anti-misinsertion distribution box based on quick pluggable terminal blocks, which can effectively solve the problems in the prior art that when traditional terminal blocks use screw crimping or ordinary clamping methods to connect large-diameter single copper wires, it is difficult to provide sufficient contact pressure and connection strength, and screw crimping and ordinary clamping methods are prone to insufficient crimping due to the rigidity of the single copper wire and connection loosening caused by external vibrations and other factors, ultimately affecting the connection reliability.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: The present invention provides an anti-misinsertion distribution box based on quick pluggable terminal blocks, including: The distribution box body; The terminal block, the terminal block adopts a separable structure and is fixedly connected to the guide rail inside the distribution box body through fasteners. A circular groove is opened at the interface of the terminal block, and an installation sleeve is arranged inside the circular groove; Among them, the installation sleeve realizes quick plugging and unplugging with the terminal through the clamping group arranged on the outer wall. Installation grooves and sliding grooves are arranged on the inner wall of the installation sleeve along the circumferential direction. The installation grooves and the sliding grooves are arranged in the front-back direction. Inside the installation sleeve, a pressing group and a limiting group for quickly locking the wire are respectively arranged along the front-back direction; Among them, the pressing group and the limiting group are arranged in a staggered manner at a 45-degree angle. The pressing and limiting work of the outer wall of the wire in multiple degrees of freedom is realized through the pressing group and the limiting group arranged in a 45-degree staggered manner.

[0006] Furthermore, the installation grooves and the sliding grooves are arranged in a staggered manner at a 45-degree angle. The sliding groove group includes four sliding grooves arranged on the inner wall of the rear-side installation sleeve and distributed along the circumferential direction. The installation groove group includes four rectangular through grooves arranged on the inner wall of the front-side installation sleeve and distributed along the circumferential direction. Chamfers are arranged at the corners of the rectangular through grooves, and a strip-shaped groove communicating with it is also arranged at the front end of the rectangular through groove.

[0007] Furthermore, the pressing group includes a first circular disk slidably arranged inside the installation sleeve and having four sliding grooves arranged along the circumferential direction on the front-side end face. Inside the four sliding grooves, sliding blocks with lower end faces fitting the chamfers of the rectangular through grooves and having two rectangular grooves arranged on the front side walls are respectively slidably arranged. A fitting is jointly installed inside the rectangular through groove and the strip-shaped groove. A rectangular sliding block that slidably penetrates the installation sleeve is fixedly arranged on the end face of the first circular disk.

[0008] Furthermore, four connecting plates distributed along the circumferential direction and corresponding to the positions of the rectangular grooves are arranged on the outer side wall of the rectangular sliding block. On the lower end face of the connecting plate, a first waist-shaped plate with both ends respectively hinged to the rectangular groove and the installation sleeve is installed. The lower end face of the connecting plate is slidably arranged inside the first waist-shaped plate through a linkage block.

[0009] Furthermore, the fitting includes an L-shaped top block slidably arranged inside the rectangular through groove. An installation cavity is arranged on the side wall of the rectangular through groove at the rear end of the L-shaped top block. A supporting plate hinged to the L-shaped top block is rotatably installed inside the installation cavity. The other end of the supporting plate is fixedly provided with an arc-shaped pressing block that slidably penetrates the inner wall of the installation sleeve and is used for pressing and limiting the outer wall of the wire.

[0010] Furthermore, the fitting also includes a strip-shaped block slidably arranged inside the strip-shaped groove through a spring. Two telescopic push plates fitting the outer side wall of the L-shaped top block are fixedly arranged on one side of the strip-shaped block close to the L-shaped top block. The other end of the strip-shaped block is hinged with a hinge plate rotatably connected to the rectangular sliding block through a roller. The middle position of the hinge plate is rotatably connected to the installation sleeve through a U-shaped convex block.

[0011] Further, the limiting group includes a circular disk II slidably arranged inside the installation sleeve. An arc-shaped wedge plate is fixedly arranged inside the sliding groove at the rear side of the circular disk II. An arc-shaped abutting block slidably arranged inside the sliding groove is installed at the rear end of the arc-shaped wedge plate through a tension spring. The arc-shaped abutting block is fixedly connected to the circular disk II through a linkage plate that slidably penetrates the arc-shaped wedge plate.

[0012] Further, the arc-shaped abutting block adopts a separable structure, including two strip-shaped sliders slidably arranged inside the sliding groove. A pushing block that slides in the up-and-down direction and is used to limit the outer wall of the wire is arranged between the two strip-shaped sliders through a spring.

[0013] Further, a clamping groove is opened downward at any position on the inner side wall of the circular groove. A clamping groove is opened at the bottommost end of the clamping groove. Two arc-shaped clamping grooves distributed along the circumferential direction are also opened on the outer side wall of the circular groove. Two pressing blocks arranged along the circumferential direction and slidably penetrating the arc-shaped clamping grooves are installed on the wiring terminal.

[0014] Further, the clamping group includes an installation ring rotatably arranged on the outer wall of the installation sleeve through a torsion spring. Four arc-shaped plates that are misaligned with the arc-shaped clamping grooves are fixedly arranged on the outer wall of the installation ring. Among them, a clamping block is fixedly arranged at the position corresponding to the clamping groove on one arc-shaped plate. Two strip-shaped sliding grooves distributed along the front-back direction are respectively opened on the outer walls of the four arc-shaped plates. A clamping member used to tightly fix the wiring terminal is jointly installed between the two strip-shaped sliding grooves.

[0015] Further, the clamping member includes two adjusting blocks respectively slidably arranged inside the strip-shaped sliding grooves. Waist-shaped plates II are respectively hinged on the side walls of the two adjusting blocks close to each other. C-shaped blocks are respectively hinged at one ends of the two waist-shaped plates II close to each other. An arc-shaped clamping plate is fixedly connected to the upper end surfaces of the two C-shaped blocks.

[0016] Further, the arc-shaped clamping plate is divided into a horizontal section and an inclined section. Among them, the inclined section is arranged at the front end of the horizontal section. The horizontal section is fixedly connected to the outer wall of the arc-shaped plate through a spring.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: The present invention is provided with a clamping group and a pressing group. During the sliding process of the L-shaped top block, the supporting plate is driven to rotate. During this process, the arc-shaped pressing block gradually passes through the installation sleeve and fits with the outer wall of the wire. As the wire gradually enters, the four arc-shaped pressing blocks also gradually strengthen the clamping and limiting work on the outer wall of the wire. At the same time, during the process that the circular plate II drives the arc-shaped abutting block to move through the linkage plate, the pushing block is gradually pushed against the outer wall of the conduit after contacting the arc-shaped wedge plate, thereby completing the clamping and limiting work on the outer wall of the rear end of the wire. This multi-degree-of-freedom limiting structure arranged in a staggered manner effectively prevents the connection from loosening or falling off due to vibration or pulling, thereby enhancing the mechanical strength of the connection between the wire and the installation sleeve. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a three-dimensional structural schematic diagram in an embodiment of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of a terminal and an installation sleeve in an embodiment of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the terminal after being sectioned in an embodiment of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the installation sleeve in an embodiment of the present invention; Figure 5 It is a three-dimensional separated structural schematic diagram of a clamping group in an embodiment of the present invention; Figure 6 It is a three-dimensional separated structural schematic diagram of a limiting group in an embodiment of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of a pressing group in an embodiment of the present invention; Figure 8 It is a three-dimensional separated structural schematic diagram of a fitting in an embodiment of the present invention; Figure 9 It is a planar structural schematic diagram of the state transformation of the fitting in an embodiment of the present invention.

[0020] The reference numerals in the drawings respectively represent: 1, distribution box body; 2, terminal; 21, circular groove; 22, clamping groove; 23, arc-shaped clamping groove; 3, installation sleeve; 31, clamping group; 311, installation ring; 312, arc-shaped plate; 313, strip-shaped sliding groove; 314, clamping member; 3141, adjusting block; 3142, second waist-shaped plate; 3143, U-shaped block; 3144, arc-shaped clamping plate; 32, pressing group; 321, first circular disk; 322, sliding block; 323, fitting; 3231, L-shaped top block; 3232, supporting plate; 3233, arc-shaped pressing block; 3234, strip-shaped block; 3235, telescopic push plate; 3236, hinge plate; 324, rectangular slider; 3241, connecting plate; 3242, first waist-shaped plate; 33, limiting group; 331, second circular disk; 332, arc-shaped wedge plate; 333, arc-shaped abutting block; 3331, strip-shaped slider; 3332, pushing block. Detailed Description of the Embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The present invention will be further described below in conjunction with embodiments.

[0023] Embodiment:

[0024] Please refer to Figures 1-9 , the present invention provides a technical solution: a misinsertion-proof distribution box based on a quick-plug and quick-unplug wiring terminal, including: Distribution box body 1; Wiring terminal 2, the wiring terminal 2 adopts a separable structure and is fixedly connected to the guide rail inside the distribution box body 1 through a fastener. A circular groove 21 is opened at the interface of the wiring terminal 2, and an installation sleeve 3 is arranged inside the circular groove 21; Among them, the installation sleeve 3 realizes quick plugging and unplugging with the wiring terminal 2 through the clamping group 31 arranged on the outer wall. Installation groove groups and sliding groove groups are opened on the inner wall of the installation sleeve 3 along the circumferential direction. The installation groove groups and the sliding groove groups are arranged in the front-back direction. A tightening group 32 and a limiting group 33 for quickly locking the wire are respectively arranged inside the installation sleeve 3 along the front-back direction; Among them, the tightening group 32 and the limiting group 33 are arranged in a staggered manner at a forty-five-degree angle, and the tightening and limiting work of the outer wall of the wire in multiple degrees of freedom is realized through the tightening group 32 and the limiting group 33 arranged in a forty-five-degree staggered manner.

[0025] The installation groove groups and the sliding groove groups are arranged in a staggered manner at a forty-five-degree angle. The sliding groove group includes four chutes opened on the inner wall of the rear-side installation sleeve 3 and distributed along the circumferential direction. The installation groove group includes four rectangular through grooves opened on the inner wall of the front-side installation sleeve 3 and distributed along the circumferential direction. Chamfers are opened at the corners of the rectangular through grooves, and strip-shaped grooves communicated with them are also opened at the front ends of the rectangular through grooves.

[0026] The tightening group 32 includes a circular disk one 321 slidably arranged inside the installation sleeve 3 and having four sliding grooves opened on the front-side end face along the circumferential direction. Four sliding blocks 322 with the lower end faces fitting the chamfers of the rectangular through grooves and two rectangular grooves opened on the front side walls are respectively slidably arranged in the four sliding grooves. A fitting 323 is jointly installed inside the rectangular through grooves and the strip-shaped grooves. A rectangular slider 324 slidably penetrating the installation sleeve 3 is fixedly arranged on the end face of the circular disk one 321.

[0027] On the outer side wall of the rectangular slider 324, there are four connecting plates 3241 distributed along the circumferential direction and corresponding to the positions of the rectangular grooves. At the lower end surface of the connecting plate 3241, there is a first waist-shaped plate 3242 with both ends hinged to the rectangular groove and the mounting sleeve 3 respectively. The lower end surface of the connecting plate 3241 is slidably arranged inside the first waist-shaped plate 3242 through a linkage block.

[0028] The fitting 323 includes an L-shaped top block 3231 slidably arranged inside the rectangular through groove. At the rear end of the L-shaped top block 3231 and on the side wall of the rectangular through groove, there is a mounting cavity. Inside the mounting cavity, there is a supporting plate 3232 rotatably mounted and hinged to the L-shaped top block 3231. At the other end of the supporting plate 3232, there is an arc-shaped pressing block 3233 fixedly arranged and slidably penetrating through the inner wall of the mounting sleeve 3 for tightly limiting the outer wall of the wire.

[0029] The fitting 323 further includes a strip-shaped block 3234 slidably arranged inside the strip-shaped groove through a spring. On one side of the strip-shaped block 3234 close to the L-shaped top block 3231, there are two telescopic push plates 3235 attached to the outer side wall of the L-shaped top block 3231. At the other end of the strip-shaped block 3234, there is a hinge plate 3236 rotatably connected to the rectangular slider 324 through a roller. The middle position of the hinge plate 3236 is rotatably connected to the mounting sleeve 3 through a U-shaped convex block.

[0030] The limiting group 33 includes a second circular disk 331 slidably arranged inside the mounting sleeve 3. At the rear side of the second circular disk 331 and inside the chute, there is an arc-shaped wedge plate 332 fixedly arranged. At the rear end of the arc-shaped wedge plate 332, there is an arc-shaped pressing block 333 installed through a tension spring and slidably arranged inside the chute. The arc-shaped pressing block 333 is fixedly connected to the second circular disk 331 through a linkage plate slidably penetrating through the arc-shaped wedge plate 332.

[0031] The arc-shaped pressing block 333 adopts a separable structure, including two strip-shaped sliders 3331 slidably arranged inside the chute. Between the two strip-shaped sliders 3331, there is a pressing block 3332 arranged to slide in the up and down direction through a spring for limiting the outer wall of the wire.

[0032] At any position on the inner side wall of the circular groove 21, there is a clamping groove 22 opened downward. At the bottom end of the clamping groove 22, there is a tightening groove. On the outer side wall of the circular groove 21, there are also two arc-shaped clamping grooves 23 distributed along the circumferential direction. On the wiring terminal 2, there are two pressing blocks arranged along the circumferential direction and slidably penetrating through the arc-shaped clamping grooves 23.

[0033] The clamping assembly 31 includes a mounting ring 311 rotatably arranged on the outer wall of the mounting sleeve 3 through a torsion spring. Four arc-shaped plates 312 that are misaligned with the arc-shaped card slots 23 are fixedly arranged on the outer wall of the mounting ring 311. Among them, a clamping block is fixedly arranged on one arc-shaped plate 312 corresponding to the position of the clamping slot 22. Two strip-shaped sliding slots 313 distributed in the front-back direction are respectively formed on the outer walls of the four arc-shaped plates 312. A clamping member 314 for clamping and fixing with the wiring terminal 2 is jointly installed between the two strip-shaped sliding slots 313.

[0034] The clamping member 314 includes two adjusting blocks 3141 respectively slidingly arranged inside the strip-shaped sliding slots 313. Waist-shaped plates II 3142 are respectively hinged on the side walls of the two adjusting blocks 3141 close to each other. C-shaped blocks 3143 are respectively hinged at the ends of the two waist-shaped plates II 3142 close to each other. An arc-shaped clamping plate 3144 is fixedly connected to the upper end surfaces of the two C-shaped blocks 3143.

[0035] The arc-shaped clamping plate 3144 is divided into a horizontal section and an inclined section. Among them, the inclined section is arranged at the front end of the horizontal section. The horizontal section is fixedly connected to the outer wall of the arc-shaped plate 312 through a spring.

[0036] During specific operation, for the quick installation of the mounting sleeve 3 and the wiring terminal 2: First, the wiring terminal 2 is fixedly connected to the guide rail inside the distribution box body 1 through a fastener. Subsequently, according to the position of the clamping block on the mounting sleeve 3, the wiring terminal 2 is inserted into the wiring terminal 2 along the clamping slot 22 (the positions of the clamping slots 22 formed on different wiring terminals 2 are different. After the wiring terminal 2 is fixed to the guide rail through a fastener, the position of the clamping slot 22 on the wiring terminal 2 has been fixed and will not shift. Similarly, the clamping blocks connected to the outer walls of different mounting sleeves 3 are also located at different positions. When the mounting sleeve 3 and the wiring terminal 2 are inserted and matched, no external force is applied to the mounting ring 311, so that the mounting ring 311 enters the corresponding wiring terminal 2 from the initial position), until it moves to the bottom of the clamping slot 22.

[0037] During this process, since the arc-shaped clamping plates 3144 provided on the four arc-shaped plates 312 are misaligned with the two arc-shaped clamping grooves 23, when the installation sleeve 3 is installed into the inside of the terminal 2, through the contact fit of the inclined section and the horizontal section of the arc-shaped clamping plate 3144 with the inside of the circular groove 21 in sequence, the inside of the circular groove 21 completes the pressing work on the arc-shaped clamping plate 3144, and the outer wall of the horizontal section of the arc-shaped clamping plate 3144 fits with the inner wall of the circular groove 21 of the terminal 2 (in the initial state, due to the spring at the lower end face of the horizontal section of the arc-shaped clamping plate 3144, and at the same time, due to the two waist-shaped plates II 3142 supporting the arc-shaped clamping plate 3144 synchronously upward, when the arc-shaped clamping plate 3144 is not subjected to a compressive force, the four arc-shaped clamping plates 3144 are in a synchronously outward-expanded state). After the installation sleeve 3 gradually enters the inside of the circular groove 21, due to the pushing and compression of the inner wall of the circular groove 21, the two adjusting blocks 3141 on the same arc-shaped plate 312 move away synchronously to compensate for the length of the waist-shaped plate II 3142.

[0038] Immediately afterwards, rotate the installation ring 311 and drive the four arc-shaped plates 312 provided thereon to rotate synchronously (since the bottom end of the clamping groove 22 is provided with a clamping groove, when the installation ring 311 drives the arc-shaped plate 312 to rotate, the clamping block provided on the arc-shaped plate 312 will not be blocked). Taking any one clamping member 314 as an example, when the arc-shaped plate 312 rotates to the position of the arc-shaped clamping groove 23, due to the disappearance of the force blocking the outer wall of the horizontal section of the arc-shaped clamping plate 3144, the arc-shaped clamping plate 3144 bounces under the action of the spring reset force. During the bouncing process of the arc-shaped clamping plate 3144, the two adjusting blocks 3141 on both sides reset and drive the corresponding waist-shaped plates II 3142 to further push out the arc-shaped clamping plate 3144, so that the arc-shaped clamping plate 3144 is located inside the corresponding arc-shaped clamping groove 23. Thus, the rapid plugging work of the installation sleeve 3 and the terminal 2 is completed.

[0039] It should be noted that in the initial state, the pressing block (not shown in the attached drawing of the specification) is not located inside the arc-shaped clamping groove 23, so it will not block the arc-shaped clamping plate 3144 that is clamped into the arc-shaped clamping groove 23. After the two arc-shaped clamping plates 3144 complete the limiting inside the arc-shaped clamping groove 23, the remaining two arc-shaped clamping plates 3144 continue to be in close contact with the inner wall of the circular groove 21. Through the synchronous outward expansion of the two arc-shaped clamping plates 3144 and the auxiliary pressing of the remaining two arc-shaped clamping plates 3144, the matching clamping of the installation sleeve 3 and the terminal 2 is realized. The clamping in multiple directions is set to prevent the separation of the installation sleeve 3 and the terminal 2 due to the vibration of the distribution box body 1 in a special working environment, thereby enhancing the connection strength between the installation sleeve 3 and the terminal 2.

[0040] The rapid plugging work of the wire and the installation sleeve 3: First, push the wire along the mounting sleeve 3. During the pushing process, the top end of the wire pushes the circular disk II 331 to slide (the wire is a single-strand thick copper wire with a larger diameter and higher hardness. Therefore, when the wire enters along the mounting sleeve 3, after its front end contacts the circular disk II 331, it can push the circular disk II 331). During the movement of the circular disk II 331, the arc-shaped abutting block 333 is pulled along the sliding groove by the linkage plate, and the upper end surface of the abutting block 3332 gradually contacts the arc-shaped wedge plate 332 during the sliding process.

[0041] As the wire continues to push the circular disk II 331 to slide along the mounting sleeve 3, after the circular disk I 321 contacts the circular disk II 331, it is synchronously pushed and slides along the inside of the mounting sleeve 3. During the process of the circular disk I 321 driving the sliding block 322 and the rectangular slider 324 to move, the sliding block 322 will slide along the sliding groove due to the gradual approach of the circular disk I 321 and the inner wall of the mounting sleeve 3 (when the rectangular slider 324 drives the connecting plate 3241 to slide, since the length of the connecting plate 3241 remains unchanged, the waist-shaped plate I 3242 gradually changes its angle under the pushing of the connecting plate 3241, and during this change process, it pushes the sliding block 322 to slide along the sliding groove. Since the lower end surface of the sliding block 322 fits with the chamfer of the rectangular through groove in the initial state, with the movement of the circular disk I 321 and the adjustment of the waist-shaped plate I 3242, the sliding block 322 always fits with the rectangular through groove during the gradual extension process). As the sliding block 322 moves, its end surface gradually contacts the L-shaped top block 3231 and pushes the L-shaped top block 3231 to slide along the rectangular through groove. During the sliding process of the L-shaped top block 3231, one end of the supporting plate 3232 is driven to move, and the arc-shaped clamping block 3233 at the other end gradually passes through the mounting sleeve 3 and fits with the outer wall of the wire during the rotation of the supporting plate 3232, and the clamping work on the outer wall of the wire is completed through the continuous movement of the L-shaped top block 3231. As the wire gradually enters, the four arc-shaped clamping blocks 3233 also gradually strengthen the clamping and limiting work on the outer wall of the wire. The limiting work on the outer wall of the wire is realized by the synchronous approach of the four arc-shaped clamping blocks 3233, avoiding the situation of unstable wire limiting caused by unilateral clamping of the wire.

[0042] Meanwhile, during the sliding process of the rectangular slider 324, the articulated plate 3236 rotatably connected to its top end pushes the strip-shaped block 3234 and the telescopic push plate 3235 to slide along the strip-shaped groove (since the center of the articulated plate 3236 is rotatably connected to the mounting sleeve 3, and the two ends of the articulated plate 3236 are respectively rotatably connected to the strip-shaped block 3234 and the rectangular slider 324, when one end of the articulated plate 3236 rotatably connected to the rectangular slider 324 is pushed, the end rotatably connected to the strip-shaped block 3234 will rotate around the center of the articulated plate 3236, thus completing the pushing work of the two telescopic push plates 3235. And since the top end of the telescopic push plate 3235 is set as a telescopic structure, when the L-shaped top block 3231 blocks the telescopic push plate 3235, the telescopic section of the telescopic push plate 3235 will be compressed first). As the circular disk one 321 is continuously pushed, the L-shaped top block 3231 is separated from the surfaces of the two telescopic push plates 3235 under the push of the sliding block 322. Due to the disappearance of the blocking force of the two telescopic push plates 3235, their telescopic sections quickly pop out and snap into another rectangular groove inside the sliding block 322, and the limiting work of the sliding block 322 is completed.

[0043] It should be noted that when the telescopic end of the telescopic push plate 3235 pops out and is located inside the sliding block 322, the sliding block 322 is clamped by the telescopic push plate 3235 and cannot move, thus ensuring the stable compression of the L-shaped top block 3231 on the lower end surface of the sliding block 322. By setting the telescopic push plate 3235, the clamping strength of the arc-shaped pressing block 3233 on the outer wall of the wire can be enhanced, and the situation where the clamping force between the arc-shaped pressing block 3233 and the wire is unstable due to vibration can be avoided.

[0044] After the four front-end arc-shaped pressing blocks 3233 clamp and limit the outer wall of the wire, it means that the four rear-end pushing blocks 3332 misaligned with the arc-shaped pressing blocks 3233 have also completed the clamping and limiting work on the outer wall of the wire (when the wire pushes the circular disk two 331 to move, during the process that the circular disk two 331 drives the arc-shaped block 333 through the linkage plate, the pushing block 3332 is gradually pushed after contacting the arc-shaped wedge plate 332. Since the pushing block 3332 is connected to the two strip-shaped sliding blocks 3331 through springs, the pushing block 3332 will not be blocked during the sliding process, and then the clamping and limiting of the outer wall of the rear end of the wire is completed). Through the pushing work of one wire, the multi-degree-of-freedom limiting work of the pushing block 3332 and the arc-shaped pressing block 3233 on the outer wall of the wire can be realized. And since the pushing block 3332 and the arc-shaped pressing block 3233 are arranged in a 45-degree stagger, a more comprehensive limiting work on the outer wall of the wire can be realized, further enhancing the clamping strength on the outer wall of the wire and avoiding the problem that the unilateral limiting cannot meet the clamping strength due to the large diameter of the wire.

[0045] Quick disassembly of the wire from the mounting sleeve 3 and the mounting sleeve 3 from the terminal 2: When it is necessary to disassemble the mounting sleeve 3 and the terminal 2, it is only necessary to synchronously press two pressing blocks (not shown in the accompanying drawings of the specification) located on the terminal 2. At this time, the arc-shaped clamping plates 3144 inside the two arc-shaped clamping grooves 23 are synchronously pushed and separated from the arc-shaped clamping grooves 23. After the arc-shaped clamping plates 3144 are separated, since the forces limiting the arc-shaped clamping plates 3144 on both sides disappear, the mounting ring 311 is reset and rotated under the force of the torsion spring, and the arc-shaped clamping plates 3144 are driven to be misaligned with the arc-shaped clamping grooves 23 during the rotation process, thereby realizing the separation of the mounting sleeve 3 and the terminal 2.

[0046] When separating the wire from the mounting sleeve 3, only by pushing the rectangular slider 324 can the unlocking of the wire and the mounting sleeve 3 be completed (during the process of pushing the rectangular slider 324, the hinge plate 3236 hinged thereon pulls the strip-shaped block 3234 forward during the movement of the rectangular slider 324, and the strip-shaped block 3234 drives the two telescopic push plates 3235 to be separated from the sliding block 322. At the same time, when the rectangular slider 324 slides, the connecting plate 3241 fixedly arranged on its end face will pull the first waist-shaped plate 3242 closer. When the first waist-shaped plate 3242 moves, it drives the sliding block 322 to slide synchronously. During this process, the pressure above the L-shaped top block 3231 disappears, so it bounces up under the force of the spring reset, and drives the supporting plate 3232 to rotate during the bouncing process of the L-shaped top block 3231, and then the arc-shaped pressing block 3233 gradually moves away from the outer wall of the wire. As the rectangular slider 324 is continuously pushed, the second circular disc 331 drives the pressing block to be separated from the arc-shaped wedge plate 332 under the drive of the first circular disc 321, and the pushing block 3332 lacking the pushing force bounces up rapidly under the action of the spring forces on both sides and is also separated from the outer wall of the wire). By pushing the rectangular slider 324, the unlocking of the multi-degree-of-freedom limiting structure on the outer wall of the wire can be completed. There is no need to use tools, making the unlocking work simple, and thus improving the work efficiency of unlocking the wire and the mounting sleeve 3.

[0047] It is worth emphasizing that the pluggable distribution box based on the quick pluggable terminal has the following advantages: Advantage 1: During the sliding process of the L-shaped top block 3231, one end of the supporting plate 3232 is driven to move. While the arc-shaped pressing block 3233 at the other end gradually passes through the mounting sleeve 3 and fits against the outer wall of the wire during the rotation of the supporting plate 3232. As the wire gradually enters, the four arc-shaped pressing blocks 3233 also gradually strengthen the clamping and limiting work on the outer wall of the wire. At the same time, when the circular plate II drives the arc-shaped block 333 to move through the linkage plate, the pushing block 3332 is gradually pushed after contacting the arc-shaped wedge plate 332. Since the pushing block 3332 is connected to the two strip-shaped sliders 3331 by springs, the pushing block 3332 will not be blocked during the sliding process, and then the clamping and limiting of the outer wall of the rear end of the wire is completed. This multi-degree-of-freedom limiting structure effectively prevents the connection from loosening or falling off due to vibration or pulling, thereby enhancing the mechanical strength of the connection between the wire and the mounting sleeve 3.

[0048] Advantage 2: When the telescopic end of the telescopic push plate 3235 pops out and is located inside the sliding block 322, the sliding block 322 cannot move due to the clamping of the telescopic push plate 3235, thus ensuring the stable pressure on the L-shaped top block 3231 at the lower end face of the sliding block 322. By setting the telescopic push plate 3235, the pressing strength of the arc-shaped pressing block 3233 against the outer wall of the wire can be enhanced, avoiding the situation where the pressing force between the arc-shaped pressing block 3233 and the wire is unstable due to vibration.

[0049] Advantage 3: When the arc-shaped plate 312 rotates to the arc-shaped card slot 23 position, since the blocking force on the outer wall of the horizontal section of the arc-shaped card plate 3144 disappears, the arc-shaped card plate 3144 pops up under the action of the spring reset force. During the popping-up process of the arc-shaped card plate 3144, the adjusting blocks 3141 on both sides are reset and drive the corresponding second waist-shaped plate 3142 to further push out the arc-shaped card plate 3144, so that the arc-shaped card plate 3144 is located inside the corresponding arc-shaped card slot 23. The cooperation clamping of the mounting sleeve 3 and the terminal 2 is realized through the synchronous outward expansion of the two arc-shaped card plates 3144 and the auxiliary pressing of the other two arc-shaped card plates 3144. Setting the clamping in multiple directions avoids the separation of the mounting sleeve 3 and the terminal 2 due to the vibration of the distribution box body 1 in a special working environment, and then enhances the connection strength between the mounting sleeve 3 and the terminal 2.

[0050] Advantage 4: During the unlocking process of the wire and the mounting sleeve 3, the rectangular slider 324 is pushed. The hinged plate 3236 hinged thereon pulls the bar-shaped block 3234 forward during the movement of the rectangular slider 324, and causes the bar-shaped block 3234 to drive the two telescopic push plates 3235 to disengage from the sliding block 322. During the sliding process of the rectangular slider 324, the waist-shaped plate 1 3242 will drive the sliding block 322 to slide synchronously. During this process, the pressure above the L-shaped top block 3231 disappears and it bounces up under the force of spring reset. During the bouncing process of the L-shaped top block 3231, it drives the supporting plate 3232 to rotate, and then makes the arc-shaped pressing block 3233 gradually move away from the outer wall of the wire. With the continuous pushing of the rectangular slider 324, the circular disk 2 331 drives the pressing block to disengage from the arc-shaped wedge plate 332 under the drive of the circular disk 1 321. The push block 3332 lacking the pushing force bounces up rapidly under the action of the spring force on both sides and also disengages from the outer wall of the wire. This tool-free and rapid disassembly method greatly facilitates the maintenance and repair of the equipment.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A misinsertion-proof distribution box based on a quick-plug wiring terminal, characterized in that, Including: Distribution box body (1); Terminal (2), the terminal (2) adopts a separable structure and is fixedly connected to the guide rail inside the distribution box body (1) through fasteners. A circular groove (21) is opened at the interface of the terminal (2), and an installation sleeve (3) is arranged inside the circular groove (21); Among them, the installation sleeve (3) realizes quick plugging and unplugging with the terminal (2) through the clamping group (31) arranged on the outer wall. Installation groove groups and sliding groove groups are opened on the inner wall of the installation sleeve (3) along the circumferential direction. The installation groove groups and the sliding groove groups are arranged in the front-back direction. A pressing group (32) and a limiting group (33) for quickly locking the wire are respectively arranged inside the installation sleeve (3) along the front-back direction; Among them, the pressing group (32) and the limiting group (33) are arranged in a staggered manner at a forty-five-degree angle. The pressing group (32) and the limiting group (33) arranged in a forty-five-degree staggered manner realize the pressing and limiting work of the outer wall of the wire with multiple degrees of freedom.

2. The anti-misinsertion distribution box based on a quick-plug wiring terminal according to claim 1, characterized in that: The installation groove groups and the sliding groove groups are arranged in a staggered manner at a forty-five-degree angle. The sliding groove group includes four chutes opened on the inner wall of the rear-side installation sleeve (3) and distributed along the circumferential direction. The installation groove group includes four rectangular through grooves opened on the inner wall of the front-side installation sleeve (3) and distributed along the circumferential direction. Chamfers are opened at the corners of the rectangular through grooves, and a strip-shaped groove communicated with it is also opened at the front end of the rectangular through groove.

3. The anti-misinsertion distribution box based on a quick-plug wiring terminal according to claim 2, characterized in that: The pressing group (32) includes a circular disk one (321) slidably arranged inside the installation sleeve (3) and having four sliding grooves opened on the front-side end face along the circumferential direction. Four sliding blocks (322) with the lower end faces fitting with the chamfers of the rectangular through grooves and two rectangular grooves opened on the front side walls are respectively slidably arranged in the four sliding grooves. A fitting (323) is jointly installed inside the rectangular through groove and the strip-shaped groove. A rectangular slider (324) that slidably penetrates the installation sleeve (3) is fixedly arranged on the end face of the circular disk one (321).

4. The anti-misinsertion distribution box based on a quick-plug wiring terminal according to claim 3, characterized in that: Four connecting plates (3241) distributed along the circumferential direction and corresponding to the positions of the rectangular grooves are arranged on the outer side wall of the rectangular slider (324). A first waist-shaped plate (3242) with both ends hinged to the rectangular groove and the installation sleeve (3) respectively is installed on the lower end face of the connecting plate (3241). The lower end face of the connecting plate (3241) is slidably arranged inside the first waist-shaped plate (3242) through a linkage block.

5. The anti-misinsertion distribution box based on a quick pluggable terminal according to claim 3, characterized in that: The fitting (323) includes an L-shaped top block (3231) slidably arranged inside the rectangular through groove. An installation cavity is opened on the side wall of the rectangular through groove at the rear end of the L-shaped top block (3231). A supporting plate (3232) hinged to the L-shaped top block (3231) is rotatably installed inside the installation cavity. The other end of the supporting plate (3232) is fixedly provided with an arc-shaped pressing block (3233) that slidably penetrates the inner wall of the installation sleeve (3) and is used for pressing and limiting the outer wall of the wire.

6. The anti-misinsertion distribution box based on a quick-plug wiring terminal according to claim 5, characterized in that: The mating part (323) further includes a strip-shaped block (3234) slidably arranged inside the strip-shaped groove through a spring. On one side of the strip-shaped block (3234) close to the L-shaped top block (3231), two telescopic push plates (3235) that are attached to the outer wall of the L-shaped top block (3231) are fixedly arranged. The other end of the strip-shaped block (3234) is hinged with a hinge plate (3236) that is rotatably connected to the rectangular slider (324) through a roller. The middle position of the hinge plate (3236) is rotatably connected to the mounting sleeve (3) through a U-shaped convex block.

7. The anti-misinsertion distribution box based on the quick-plug wiring terminal according to claim 2, wherein: The limiting group (33) includes a circular disk two (331) slidably arranged inside the mounting sleeve (3). An arc-shaped wedge plate (332) is fixedly arranged at the rear side of the circular disk two (331) and inside the chute. The rear end of the arc-shaped wedge plate (332) is provided with an arc-shaped abutting block (333) slidably arranged inside the chute through a tension spring. The arc-shaped abutting block (333) is fixedly connected to the circular disk two (331) through a linkage plate that slidably penetrates the arc-shaped wedge plate (332).

8. The anti-misinsertion distribution box based on a quick-plug wiring terminal according to claim 7, characterized in that: The arc-shaped abutting block (333) adopts a separable structure and includes two strip-shaped sliders (3331) slidably arranged inside the chute. Abutting and pushing blocks (3332) that slide in the up and down direction and are used for limiting the outer wall of the wire are arranged between the two strip-shaped sliders (3331) through a spring.

9. An anti-misinsertion distribution box based on a quick-plug wiring terminal according to claim 1, characterized in that: At any position on the inner side wall of the circular groove (21), a clamping groove (22) is opened downward. A clamping groove is opened at the bottommost end of the clamping groove (22). Two arc-shaped clamping grooves (23) distributed along the circumferential direction are also opened on the outer side wall of the circular groove (21). Two pressing blocks that are arranged along the circumferential direction and slidably penetrate the arc-shaped clamping grooves (23) are installed on the wiring terminal (2).

10. A misinsertion-proof distribution box based on a quick-plug wiring terminal according to claim 9, characterized in that: The clamping group (31) includes a mounting ring (311) rotatably arranged on the outer wall of the mounting sleeve (3) through a torsion spring. Four arc-shaped plates (312) that are misaligned with the arc-shaped clamping grooves (23) are fixedly arranged on the outer wall of the mounting ring (311). Among them, a clamping block is fixedly arranged at the position corresponding to the clamping groove (22) on one arc-shaped plate (312). Two strip-shaped chutes (313) distributed along the front and rear directions are respectively opened on the outer walls of the four arc-shaped plates (312). A clamping member (314) used for clamping and fixing the wiring terminal (2) is jointly installed between the two strip-shaped chutes (313). The clamping member (314) includes two adjusting blocks (3141) respectively slidably arranged inside the strip-shaped chutes (313). On the side walls of the two adjusting blocks (3141) close to each other, second waist-shaped plates (3142) are respectively hinged. The ends of the two second waist-shaped plates (3142) close to each other are respectively hinged with U-shaped blocks (3143). An arc-shaped clamping plate (3144) is jointly fixedly connected to the upper end surfaces of the two U-shaped blocks (3143). The arc-shaped clamping plate (3144) is divided into a horizontal section and an inclined section. Among them, the inclined section is arranged at the front end of the horizontal section, and the horizontal section is fixedly connected to the outer wall of the arc-shaped plate (312) through a spring.

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