Environment-friendly photovoltaic distribution box

Abstract

The present application relates to the field of distribution box, specifically relates to a kind of environmental protection photovoltaic distribution box, including distribution box ontology and multiple buckling plates, distribution box ontology access line slot is rotationally provided with mounting sleeve, multiple annular arrays of buckling plates are a group, and each mounting sleeve two ends are provided with a group of buckling plates, buckling plate can be with the end close to mounting sleeve as center of rotation, transmission cylinder that is synchronously rotated with mounting sleeve is provided in mounting sleeve, transmission cylinder two ends are provided with transmission thread with opposite screw direction, transmission cylinder two ends are respectively connected with top ring by transmission thread drive, top ring top portion is attached to buckling plate inner wall, and top ring outer wall is provided with multiple transmission facets to form polygonal hollow ring, beneficial effect lies in: the present application can simultaneously control the clamping and release of the two clamping points of cable by single rotation operation, two-end clamping action is synchronous, and clamping state is consistent, avoid the operation cumbersome and two-end clamping force uneven caused by respectively adjusting two-end clamping structure.

Description

Technical Field

[0001] This invention relates to the field of distribution boxes, and more specifically to an environmentally friendly photovoltaic distribution box. Background Technology

[0002] Environmentally friendly photovoltaic (PV) distribution boxes are used in PV power generation systems to collect the electrical energy output from PV modules and distribute it to the power consumers. PV modules are connected to the distribution box via cables, which pass through the box's inlet and outlet cable structures. PV power generation systems are mostly installed outdoors, and the distribution box and its cables are subjected to tension and bending caused by wind loads and temperature changes over long periods. After the cables are inserted, they must be fixed at the inlet and outlet positions. If the cables shift at these positions under external force, the connection between the cables and the electrical components inside the box will be affected, and the reliability of power transmission will decrease.

[0003] In existing photovoltaic distribution box cable fixing methods, when cables need to be fixed at multiple locations along their path, clamps are installed at each location. The operator then sequentially operates each clamp to tighten and secure the cable. This method involves numerous steps, is time-consuming, and the clamping force is difficult to maintain consistently across all locations because the operator controls the clamping force individually. When the cable is subjected to external forces such as wind loads, the clamping force at the location with the weakest force fails first, causing the cable to shift. During this shift, friction occurs between the cable and the cable insertion / exit structure, making the cable susceptible to damage and consequently reducing the reliability of power transmission from the photovoltaic distribution box.

[0004] To address the aforementioned issues, the clamping actions of multiple clamping positions can be unified into a single component. A single operation can simultaneously drive the clamping components at each position, allowing each clamping component to clamp or release the cable synchronously. This eliminates the need to adjust each clamping component sequentially, a problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly photovoltaic distribution box to solve the above problems. A single rotation operation can simultaneously control the clamping and releasing of the cable at both clamping points. The clamping actions at both ends are performed synchronously and the clamping states are consistent, avoiding the cumbersome operation and uneven clamping force at both ends caused by adjusting the clamping structures at both ends separately. See the following description for details.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides an environmentally friendly photovoltaic distribution box, including a distribution box body and multiple buckle plates. The distribution box body is provided with mounting sleeves in the inlet and outlet cable trays. Multiple buckle plates in a ring array form a group, and each mounting sleeve is provided with a group of buckle plates at both ends. Each buckle plate can rotate about the end closest to the mounting sleeve as the center. The mounting sleeve contains a transmission cylinder that rotates synchronously with the mounting sleeve. The transmission cylinder has transmission threads with opposite orientations at both ends. The two ends of the transmission cylinder are connected to a top ring via transmission threads. The top of the top ring fits against the inner wall of the buckle plate, and the outer wall of the top ring has multiple transmission facets to form a polygonal hollow ring. The mounting sleeve has a fixed seat at both ends that is adapted to the transmission facets in the middle.

[0007] In the aforementioned environmentally friendly photovoltaic distribution box, cables enter the box body through the inlet and outlet cable slots, passing through the vertical slot of the transmission cylinder and the cable through slots of the top rings at both ends, forming a channel for the cables to pass through. When the operator rotates the mounting sleeve, the mounting sleeve drives the transmission cylinder to rotate synchronously around its own axis via the transmission ring. The rotational motion is converted into the translation of the top ring along the axis through the engagement relationship between the internal thread and the transmission thread. The top ring is fitted into the polygonal slot of the fixed seat with the transmission facet. Due to the constraint of this engagement, it cannot rotate with the transmission cylinder. The fixed seat maintains a constant angle through the limiting of the support plate and the fixed block, providing rotational constraint for the thread engagement. The threads at both ends of the transmission cylinder rotate in opposite directions. When the mounting sleeve rotates clockwise, the top rings at both ends move towards each other. When it rotates counterclockwise, the top rings at both ends move away from each other. The top ring maintains the translational direction through the cooperation of the support rod and the strip groove of the buckle plate. The conical ring translates synchronously with the top ring and is ringed on the outside of the buckle plate. When the top rings move towards each other, they disengage from the pressure on the inner wall of the buckle plate. Under the tension of the spring, the buckle plate moves towards the center around the rotating column. Multiple buckles are joined together by the inclined surfaces to form a conical structure and clamp the cable. When the top rings move away from each other, they press against the inner wall of the buckle plate. Under the pressure, the buckle plate opens outward, the conical structure separates and releases the cable. The conical structures at both ends of the mounting sleeve clamp the cable at two positions respectively. The cable is constrained in the section between the two conical structures. The spring continuously provides the clamping force. When the cable diameter changes and the buckle plate angle changes, the spring extension is adjusted accordingly. The buckle plate remains in contact with the cable. The maximum outward tilt angle of the buckle plate is limited by the conical ring. The buckle plate offset angle is limited by the frictional resistance between the metal spring and the outer wall of the buckle plate. With the double limiting of the conical ring and the metal spring, tearing between the cable and the buckle plate is avoided.

[0008] Preferably, the top of the fixing base is provided with multiple rotating grooves corresponding to the buckle plate, a rotating column is fixed in the middle of the rotating groove, and a rotating hole adapted to the rotating column is provided at one end of the buckle plate near the mounting sleeve. The buckle plate is rotatably connected to the rotating column through the rotating hole, and inclined surfaces are symmetrically provided on both sides of the buckle plate. When multiple buckles move towards the center, they form a conical structure for clamping cables.

[0009] Preferably, the bottom of the fixing base is fixed with a support plate, the middle of the support plate is provided with a polygonal groove to fit the top ring, the middle of the top ring is provided with a cable passage groove, the inner wall of the cable passage groove is provided with an internal thread to fit the transmission thread, the rotation of the transmission cylinder drives the top rings at both ends to move synchronously towards or away from each other through the opposite transmission threads at both ends, the top rings move closer or further away from each other so that the conical structure formed by the buckle plates comes together or separates.

[0010] Preferably, the top of the support plate is fixed with a plurality of pull rings that are adapted to the buckle plate, the inner side wall of the buckle plate is fixed with a hanging ring, the middle of the hanging ring is provided with a tension spring, and the other end of the tension spring is fixed to the middle of the pull ring so that the buckle plate is continuously moved toward the pull ring by the tension of the tension spring.

[0011] Preferably, the top of the fixing seat is also fixed with a plurality of support plates that are staggered with the buckle plate. The support plates are curved plates and the ends of the support plates are fixed with fixing blocks. The support plates fix the angle of the fixing seat and the buckle plate through the fixing blocks. When the mounting sleeve rotates, the fixing seat keeps the angle unchanged to drive the top ring to move along the axis of the transmission cylinder. Both ends of the inner wall of the mounting sleeve are fixed with mounting plates to be rotatably connected to the fixing seat.

[0012] Preferably, multiple support rods are fixed to the outer circumference of the top ring end, and a conical ring is fixed to the end of the multiple support rods located on the same top ring. The conical ring is used to limit the maximum outward tilt angle of the buckle plate, and the conical ring moves synchronously with the top ring. When the top ring moves away from the mounting sleeve to increase the distance between the buckle plates, the conical ring moves synchronously away from the mounting sleeve with the top ring to avoid restricting the movement of the buckle plate.

[0013] Preferably, a metal spring is fixed to the bottom of the conical ring. The metal spring is annular and fixed to the bottom of the conical ring and fits against the outer wall of the buckle plate. When the buckle plate is pulled by the cable and the angle shifts, the metal spring increases the resistance to movement of the buckle plate to prevent the cable from tearing with the buckle plate. The end of the buckle plate that contacts the cable is opened into a clamping arc surface. The clamping arc surface is a smooth, outwardly convex rounded corner. When the cable rubs against the buckle plate, the clamping arc surface guides the cable to separate from the buckle plate.

[0014] Preferably, the buckle plate has a vertically extending strip groove in the middle that corresponds to the support rod. When the top ring moves, the support rod moves vertically along the strip groove and is restricted by the buckle plate.

[0015] Preferably, the mounting sleeve has a mounting through groove in the middle to accommodate the transmission cylinder, and the transmission cylinder has a vertical through groove in the middle. The vertical groove coincides with the axis of the cable through groove so that the cable passes through the transmission cylinder and the top ring. A transmission ring is fixed to the outer wall of the middle part of the transmission cylinder to compensate for the gap between the transmission cylinder and the mounting sleeve. The outer wall of the transmission ring is fixed to the inner wall of the mounting sleeve. The mounting sleeve also has an inwardly recessed mounting groove in the middle part. The mounting sleeve is rotatably connected to the distribution box body through the mounting groove.

[0016] Preferably, the distribution box body has a door that can be rotated on one side, and an observation window is provided in the middle of the door. The inner wall of the distribution box body is fixed with mounting racks to fix electronic components, and ventilation windows are provided on both sides of the distribution box body to dissipate heat from the electronic components. Multiple mounting holes are provided on the side wall of the distribution box body to fix the distribution box body.

[0017] The beneficial effects are as follows: 1. Synchronous drive of the buckle plate assemblies at both ends of the mounting sleeve is achieved through a single rotary input. The mounting sleeve is rotatably located in the inlet and outlet cable slots of the distribution box body. A transmission cylinder that rotates synchronously with the mounting sleeve is located inside the mounting sleeve. The transmission cylinder has transmission threads with opposite directions at both ends. The top rings at both ends are connected to the two ends of the transmission cylinder via these transmission threads. Multiple transmission facets are formed on the outer wall of the top ring to create a polygonal hollow ring. The polygonal hollow ring fits into the center of the fixed base. The fixed base restricts the top ring from rotating with the transmission cylinder; the top ring can only translate along the axis of the transmission cylinder. The top of the ring fits against the inner wall of the buckle plate. Each end of the mounting sleeve has a set of buckle plates. When the operator rotates the mounting sleeve, the mounting sleeve drives the transmission cylinder to rotate synchronously. The top rings at both ends move synchronously towards or away from each other under the drive of the transmission threads with opposite rotation directions. The top rings control the buckle plate sets at both ends of the mounting sleeve to close or open synchronously through the top contact surface. With this structure, a single rotation operation can simultaneously control the clamping and release of the two clamping points of the cable. The clamping actions at both ends are performed synchronously and the clamping state is consistent, avoiding the cumbersome operation and uneven clamping force at both ends caused by adjusting the clamping structures at both ends separately.

[0018] 2. The cable is clamped at multiple points by the two end clamping plates to avoid large-angle bending of the cable. Each end of the mounting sleeve has a set of clamping plates, which clamp the cable at two different positions. The cable is constrained at both ends in the section between the two clamping points. When the cable is stretched or bent on the outside of the distribution box, the bending is distributed over a longer span between the two clamping points, reducing the bending angle. The cable does not form concentrated large-angle bends at the cable tray, and the cable stress is distributed, reducing the risk of cable damage due to bending fatigue.

[0019] 3. The buckle plate maintains a continuous clamping force on the cable through a tension spring, achieving adaptive clamping. A pull ring is fixed to the top of the support plate, and a hanging ring is fixed to the inner side wall of the buckle plate. The tension spring is located in the middle of the hanging ring, and the other end of the tension spring is fixed to the middle of the pull ring. The buckle plate is continuously subjected to a tension force towards the pull ring through the tension spring. When the cable diameter changes or the cable is displaced due to tension, the buckle plate rotates around the rotating column under the tension of the tension spring and adaptively fits the surface of the cable. The extension of the tension spring changes with the angle of the buckle plate, and the clamping force is continuously maintained. The cable is not easy to come out of the conical structure under vibration or tension conditions. The multi-point clamping and anti-bending functions are effective under various working conditions.

[0020] 4. The deflection range of the buckle plate is limited by a conical ring and a metal spring, preventing the cable from tearing against the buckle plate. Multiple support rods are fixed to the outer circumference of the top ring end. These support rods pass through a strip groove in the middle of the buckle plate. When the top ring moves, the support rods slide along the strip groove and are restricted by the buckle plate, maintaining a fixed relative movement between the top ring and the buckle plate. A conical ring is fixed to the end of each support rod. The conical ring is located outside the buckle plate and limits the maximum outward tilt angle of the buckle plate. The buckle plate does not exceed this limited angle during opening. A ring-shaped metal spring is fixed to the bottom of the conical ring. It is a spring clip. The metal spring clip fits against the outer wall of the buckle plate. When the buckle plate is pulled by the cable and the angle is deflected, the metal spring clip increases the movement resistance of the buckle plate. The angle at which the buckle plate is deflected is limited by the metal spring clip. The end of the buckle plate that contacts the cable has a clamping arc surface with an outwardly convex rounded corner. When the cable rubs against the buckle plate, the clamping arc surface guides the cable to slide away. Through this structure, the clamping posture of the buckle plate remains stable under stress conditions, avoiding tearing between the cable and the buckle plate. The clamping and anti-bending functions do not fail due to cable pulling.

[0021] 5. The opening of the conical structure is enlarged by opening the buckle plate with the top ring, making it easier for the cable to be inserted. When inserting the cable, the operator rotates the mounting sleeve so that the top rings at both ends move in opposite directions. The top of the top ring presses against the inner wall of the buckle plate and pushes the buckle plate outward. The opening of the conical structure increases as the top ring opens, and the cable can be smoothly inserted into the conical structure at both ends of the mounting sleeve through the enlarged opening. The cable insertion process is not hindered by the buckle plate being closed. After the cable is inserted, the mounting sleeve is rotated in the opposite direction, and the top rings at both ends move in opposite directions. The buckle plate closes and clamps the cable under the tension of the tension spring. The cable insertion and clamping are completed through continuous rotation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is the present invention. Figure 1 A magnified structural diagram at point A; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a structural breakdown diagram of the present invention; Figure 5 This is a partial structural breakdown diagram of the present invention; Figure 6 This is a schematic diagram of the structure of the mounting sleeve and top ring of the present invention; Figure 7This is a structurally disassembled schematic diagram of the mounting sleeve and top ring of the present invention; Figure 8 This is a schematic diagram of the structure of the buckle plate and mounting sleeve of the present invention; Figure 9 This is the present invention. Figure 8 A magnified structural diagram at point B; Figure 10 This is a schematic diagram of the top ring structure of the present invention; Figure 11 This is a structural breakdown diagram of the buckle plate of the present invention; Figure 12 This is a schematic diagram of the structure of the buckle plate of the present invention; Figure 13 This is a schematic diagram of the structure of the fixing base of the present invention; Figure 14 This is a partial front view of the present invention.

[0024] The annotations in the attached figures are explained as follows: 1. Distribution box body; 101. Box door; 102. Mounting horizontal row; 103. Observation window; 104. Mounting hole; 105. Ventilation window; 2. Mounting sleeve; 201. Mounting groove; 202. Mounting through groove; 203. Mounting plate; 204. Transmission ring; 205. Transmission cylinder; 205a. Transmission thread; 205b. Vertical groove; 206. Fixed base; 206a. Support plate; 206b. Rotating groove; 206c. 1. Rotating column; 206d. Polygonal groove; 207. Support plate; 207a. Fixing block; 208. Pull ring; 3. Top ring; 301. Cable through groove; 302. Internal thread; 303. Support rod; 304. Conical ring; 305. Metal spring; 306. Transmission prism; 4. Buckle plate; 401. Strip groove; 402. Hanging ring; 403. Tension spring; 404. Rotary hole; 405. Inclined surface; 406. Clamping arc surface. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0026] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0027] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] See Figures 1-14As shown, this invention provides an environmentally friendly photovoltaic distribution box, including a distribution box body 1 and multiple snap-fit ​​panels 4. The distribution box body 1 is a box-shaped shell. A door 101 is rotatably provided on one side of the distribution box body 1. When the operator pulls the door 101 outward, the door 101 opens outward around its rotatable connection with the distribution box body 1. When the operator pushes the door 101 into the distribution box body 1, the door 101 closes around the same rotatable connection, sealing the opening of the distribution box body 1. An observation window 103 is provided in the middle of the door 101. After the door 101 is closed, the observation window 103 faces the inside of the distribution box body 1. The operator can view the operating status of the electronic components inside the distribution box body 1 through the observation window 103 without opening the door 101. A mounting rack 102 is fixed to the inner wall of the distribution box body 1, and the electronic components are fixed to the mounting rack. On the horizontal row 102, the load of the electronic components is transferred to the distribution box body 1 via the mounting horizontal row 102. The mounting horizontal row 102 constrains the electronic components to a predetermined position inside the distribution box body 1. Ventilation windows 105 are provided on both opposite sides of the distribution box body 1. The air inside the distribution box body 1 circulates with the outside air through the ventilation windows 105. The heat generated by the operation of the electronic components is discharged through the ventilation windows 105 with the air flow, and the temperature inside the distribution box body 1 drops accordingly. Multiple mounting holes 104 are provided on the side wall of the distribution box body 1. Fasteners are inserted into the mounting holes 104 and fix the distribution box body 1 in the installation position. The distribution box body 1 is constrained in the installation position by the mounting holes 104. Cables pass through the inlet and outlet cable trays of the distribution box body 1 and enter the interior of the distribution box body 1. The inlet and outlet cable trays also provide space for the rotation and assembly of the mounting sleeve 2.

[0030] Each inlet / outlet cable tray is fitted with a mounting sleeve 2, which is a sleeve-shaped structure. A recessed mounting groove 201 is formed in the middle of the outer wall of the mounting sleeve 2. The wall of the inlet / outlet cable tray is embedded in the mounting groove 201. The mounting sleeve 2 is rotatably connected to the distribution box body 1 around its own axis via the mounting groove 201. When the operator rotates the mounting sleeve 2, it rotates relative to the inlet / outlet cable tray around its own axis. The axial position of the mounting sleeve 2 is maintained by the engagement of the mounting groove 201 with the wall of the inlet / outlet cable tray. A through mounting groove 202 is formed in the middle of the mounting sleeve 2 along its own axis. A transmission cylinder 205... The transmission ring 204 is sleeved on the outer wall of the middle part of the transmission cylinder 205 and coaxially inserted into the mounting groove 202. The outer wall of the transmission ring 204 is fixed to the inner wall of the mounting groove 202. The transmission cylinder 205 is fixedly connected to the mounting sleeve 2 via the transmission ring 204. When the mounting sleeve 2 rotates, the mounting sleeve 2 drives the transmission cylinder 205 to rotate synchronously around its own axis via the transmission ring 204. The rotation direction of the transmission cylinder 205 is the same as that of the mounting sleeve 2. The mounting sleeve 2 and the transmission cylinder 205 are in a state of synchronous rotation around the same axis. The mounting sleeve 2 rotates relative to the inlet and outlet groove, and the transmission cylinder 205 rotates synchronously with the mounting sleeve 2.

[0031] The outer walls of both ends of the transmission cylinder 205 are respectively provided with transmission threads 205a, and the transmission threads 205a at both ends have opposite directions of rotation. The top ring 3 is a ring-shaped structure, and a cable passage groove 301 is provided in the middle of the top ring 3. An internal thread 302 is provided on the inner wall of the cable passage groove 301. The top ring 3 is screwed onto the transmission thread 205a through the internal thread 302. A top ring 3 is provided at each end of the transmission cylinder 205. The top ring 3 is coaxially arranged with the transmission cylinder 205 and can move relative to the transmission cylinder 205 along the axial direction of the transmission cylinder 205. A fixed seat 206 is rotatably provided at each end of the mounting sleeve 2. The fixed seat 206 is connected to the mounting plate. Mounting plate 203 is rotatably connected to mounting sleeve 2. Mounting plate 203 is fixed to both ends of the inner wall of mounting sleeve 2. Fixing seat 206 is coaxially arranged with mounting sleeve 2. A support plate 206a is fixed at the bottom of fixing seat 206. A polygonal groove 206d is opened in the middle of support plate 206a. Multiple transmission facets 306 are opened on the outer wall of top ring 3. Multiple transmission facets 306 are arranged around the circumference of top ring 3 and form a polygonal hollow ring. The polygonal hollow ring is embedded in the polygonal groove 206d and slides along the axial direction of the polygonal groove 206d. Top ring 3 is restricted by the engagement of transmission facets 306 and polygonal groove 206d and cannot rotate around its own axis. The angular position of the fixed seat 206 remains constant and does not rotate with the mounting sleeve 2. The transmission thread 205a of the transmission cylinder 205 near the first end of the mounting sleeve 2 is a left-hand thread, and the transmission thread 205a near the second end of the mounting sleeve 2 is a right-hand thread. When the operator observes from one end of the mounting sleeve 2 to the other along the axial direction, when the mounting sleeve 2 is rotated clockwise, the mounting sleeve 2 drives the transmission cylinder 205 to rotate synchronously via the transmission ring 204. The top rings 3 at both ends are restricted by the polygonal groove 206d and cannot rotate with the transmission cylinder 205. Under the interaction of the internal thread 302 and the transmission thread 205a, the top rings 3 move along their own axis toward the mounting sleeve 2, and the top rings 3 at both ends move toward each other. When the operator rotates the mounting sleeve 2 counterclockwise, the top rings 3 at both ends move away from the mounting sleeve 2 along their own axis, and the top rings 3 at both ends move away from each other. A vertical through groove 205b is provided in the middle of the transmission cylinder 205 (see details). Figure 5 The vertical groove 205b and the cable through groove 301 are aligned. The cable passes through the transmission cylinder 205 and the top ring 3 via the vertical groove 205b and the cable through groove 301. The top rings 3 at both ends are in a state where they can move towards or away from each other along the axis. The direction of the top rings 3 changes with the rotation direction of the mounting sleeve 2. The cable through channel is composed of the vertical groove 205b and the cable through groove 301. The top of the fixing base 206 has a rotating groove 206b corresponding to the buckle plate 4. The rotating grooves 206b are arranged around the circumference of the fixing base 206, and a rotating column 206c is fixed in the middle of each rotating groove 206b (see details). Figure 13The buckle plate 4 has a rotating hole 404 at one end near the mounting sleeve 2, which is adapted to the rotating column 206c. The buckle plate 4 is sleeved on the rotating column 206c through the rotating hole 404. The buckle plate 4 rotates around the rotating column 206c. Multiple buckle plates 4 are arranged in a ring array as a group. The buckle plate 4 has symmetrical inclined surfaces 405 on both sides. When multiple buckle plates 4 move towards the center, they cooperate with each other through the inclined surfaces 405 to form a conical structure. Multiple support plates 207 are also fixed on the top of the fixing seat 206. The support plates 207 are curved plates. The support plates 207 and buckle plates 4 are staggered. The end of the support plate 207 is fixed with a fixing block 207a. The support plate 207 fixes the angle position of the fixing seat 206 and the buckle plate 4 through the fixing block 207a. When the mounting sleeve 2 rotates, the fixing seat 206 maintains an angle unchanged through the limiting of the support plate 207 and the fixing block 207a. The fixing seat 206 does not rotate with the mounting sleeve 2. The top of the tray 206a is fixed with multiple pull rings 208 that are compatible with the buckle plate 4 (see details). Figure 9 The inner wall of the buckle plate 4 is fixed with a hanging ring 402 and a tension spring 403 (see details). Figure 9 The buckle plate 4 is located in the middle of the hanging ring 402. The other end of the tension spring 403 is fixed to the middle of the pull ring 208. The buckle plate 4 is subjected to a tension force towards the pull ring 208 by the tension spring 403. When the buckle plate 4 is subjected to this tension force, it rotates around the rotating column 206c. The free end of the buckle plate 4 moves towards the middle. The conical structure composed of multiple buckle plates 4 wraps around the cable. The tension spring 403 continuously provides a fastening force. When the cable diameter changes and causes the angle of the buckle plate 4 to change, the elongation of the tension spring 403 changes accordingly. The buckle plate 4 is continuously pressed against the cable by the tension force of the tension spring 403. The end of the buckle plate 4 that contacts the cable is provided with a clamping arc surface 406 (see details). Figure 12 The clamping arc surface 406 is a smooth, outwardly protruding rounded corner. When the cable rubs against the buckle plate 4, the clamping arc surface 406 guides the cable to separate from the buckle plate 4. When the top rings 3 at both ends move towards each other, the top rings 3 move closer to the mounting sleeve 2 and remove their pressure on the inner wall of the buckle plate 4. Under the tension of the tension spring 403, the buckle plate 4 moves towards the center around the rotating column 206c. The conical structure closes and clamps the cable. When the top rings 3 at both ends move away from each other, the top rings 3 move away from the mounting sleeve 2. The top of the top rings 3 presses against the inner wall of the buckle plate 4, and the buckle plate 4 is pushed outward by the top rings 3. The conical structure separates and releases the cable. The mounting sleeve 2 has a set of buckle plates 4 at each end. The conical structures at both ends clamp the two positions of the cable respectively. The cable is constrained in the section between the two sets of buckle plates 4. The buckle plates 4 are in a clamping state where the buckling force is maintained by the tension spring 403. The conical structures at both ends wrap around and clamp the cable. The closing or opening of the conical structures is controlled by the opposite or opposite movement of the top rings 3 at both ends. Multiple support rods 303 are fixed to the outer circumference of the top ring 3. The support rods 303 are arranged circumferentially around the top ring 3. A vertically extending strip groove 401 corresponding to the support rods 303 is opened in the middle of the buckle plate 4. The support rods 303 pass through the strip groove 401. When the top ring 3 moves along the axis, the support rods 303 move vertically along the strip groove 401. The movement path of the support rods 303 is limited by the strip groove 401. The movement of the top ring 3 relative to the buckle plate 4 is restricted to sliding along the extension direction of the strip groove 401. Conical rings are fixed to the ends of the multiple support rods 303 located on the same top ring 3. 304. The conical ring 304 is a ring structure. It is located outside the buckle plate 4 and surrounds it. The conical ring 304 limits the maximum outward tilt angle of the buckle plate 4. When the buckle plate 4 tilts outward to its maximum angle, it presses against the conical ring 304 and stops tilting further. When the top ring 3 moves away from the mounting sleeve 2 and opens the buckle plate 4, the conical ring 304 moves synchronously away from the mounting sleeve 2 along with the top ring 3. The conical ring 304 provides opening space for the buckle plate 4, allowing it to open without obstruction. A metal spring 305 is fixed to the bottom of the conical ring 304 (see details). Figure 10 The metal spring 305 is ring-shaped and fixed to the bottom of the conical ring 304 and fits against the outer wall of the buckle plate 4. When the buckle plate 4 is pulled by the cable and causes an angular displacement, friction is generated between the outer wall of the buckle plate 4 and the metal spring 305. The metal spring 305 increases the moving resistance of the buckle plate 4. The displacement angle of the buckle plate 4 is limited by the metal spring 305 to avoid the cable from tearing the buckle plate 4. The buckle plate 4 is in a state where the maximum outward tilt angle is limited by the conical ring 304 and the displacement angle is limited by the metal spring 305. The buckle plate 4 remains within the limited angle range during the process of clamping the cable.

[0032] With the above structure, the cable enters the distribution box body 1 from the inlet / outlet cable tray, and passes through the vertical groove 205b of the transmission cylinder 205 and the cable through groove 301 of the top rings 3 at both ends, forming a channel for the cable to pass through. When the operator rotates the mounting sleeve 2, the mounting sleeve 2 drives the transmission cylinder 205 to rotate synchronously around its own axis via the transmission ring 204. The rotational motion is converted into the translation of the top ring 3 along the axis through the engagement relationship between the internal thread 302 and the transmission thread 205a. The top ring 3 is fitted into the polygonal groove 206d of the fixed seat 206 by the transmission facet 306. The fixed seat 206 is constrained by the engagement and cannot rotate with the transmission cylinder 205. The fixed seat 206 maintains a constant angle with the fixed block 207a through the limit of the support plate 207, providing rotational constraint for the thread engagement. The threads at both ends of the transmission cylinder 205 have opposite directions. When the mounting sleeve 2 rotates clockwise, the top rings 3 at both ends move towards each other. When it rotates counterclockwise, the top rings 3 at both ends move away from each other. The top ring 3 maintains the translation direction through the cooperation of the support rod 303 and the slot 401 of the buckle plate 4. The conical ring 304 translates synchronously with the top ring 3 and is encircled on the outside of the buckle plate 4. When the top rings 3 move towards each other, they disengage from the pressure on the inner wall of the buckle plate 4. Under the tension of the tension spring 403, the buckle plate 4 moves towards the center around the rotating column 206c. Multiple buckle plates 4 cooperate with each other via the inclined surface 405 to form a conical structure and clamp the cable. When the top rings 3 move away from each other, they press against the inner wall of the buckle plate 4. Under the pressure, the buckle plate 4 opens outward, the conical structure separates and releases the cable. The conical structures at both ends of the mounting sleeve 2 clamp the cable at two different positions. The through section between the conical structures is constrained, and the tension spring 403 continuously provides the fastening force. When the change in cable diameter causes the angle of the buckle plate 4 to change, the extension of the tension spring 403 is adjusted accordingly, and the buckle plate 4 remains in contact with the cable. The maximum outward tilt angle of the buckle plate 4 is limited by the conical ring 304, and the offset angle of the buckle plate 4 is limited by the frictional resistance between the metal spring 305 and the outer wall of the buckle plate 4. With the double limiting of the conical ring 304 and the metal spring 305, tearing between the cable and the buckle plate 4 is avoided. The mounting sleeve 2 is synchronously driven by a single rotary input to the four sets of buckle plates at both ends. The mounting sleeve 2 is rotatably mounted in the inlet and outlet cable slots of the distribution box body 1. The mounting sleeve 2 is equipped with a transmission cylinder 205 that rotates synchronously with the mounting sleeve 2. The two ends of the transmission cylinder 205 are provided with transmission threads 205a with opposite directions of rotation. The top rings 3 at both ends are respectively connected to the two ends of the transmission cylinder 205 via the transmission threads 205a. The outer wall of the top ring 3 is provided with multiple transmission facets 306 to form a polygonal hollow ring. The polygonal hollow ring is adapted to the middle of the fixed seat 206. The fixed seat 206 restricts the top ring 3 from rotating with the transmission cylinder 205. The top ring 3 can only rotate along the transmission cylinder 205. 05 axis translation, the top of the top ring 3 is attached to the inner wall of the buckle plate 4, and each end of the mounting sleeve 2 is provided with a set of buckle plates 4. When the operator rotates the mounting sleeve 2, the mounting sleeve 2 drives the transmission cylinder 205 to rotate synchronously. The top rings 3 at both ends move synchronously towards or away from each other under the drive of the transmission threads 205a with opposite rotation directions. The top rings 3 control the buckle plates 4 at both ends of the mounting sleeve 2 to close or open synchronously through the top contact surface. Through this structure, a single rotation operation can simultaneously control the clamping and release of the two clamping points of the cable. The clamping actions at both ends are performed synchronously and the clamping state is consistent, avoiding the cumbersome operation and uneven clamping force at both ends caused by adjusting the clamping structures at both ends separately. The cable is clamped at multiple points by four sets of buckles at both ends to prevent large-angle bending. Each end of the mounting sleeve 2 is provided with a set of buckles 4, which clamps the cable at two different positions. The cable is constrained at both ends in the section between the two clamping points. When the cable is stretched or bent on the outside of the distribution box body 1, the bending is distributed over a longer span between the two clamping points, reducing the bending angle. The cable does not form concentrated large-angle bends at the cable tray, and the cable force is distributed, reducing the risk of cable damage due to bending fatigue. The buckle plate 4 maintains a continuous clamping force on the cable through the tension spring 403, achieving adaptive clamping. The top of the support plate 206a is fixed with a pull ring 208, and the inner side wall of the buckle plate 4 is fixed with a hanging ring 402. The tension spring 403 is located in the middle of the hanging ring 402, and the other end of the tension spring 403 is fixed in the middle of the pull ring 208. The buckle plate 4 is continuously subjected to a tension force towards the pull ring 208 by the tension spring 403. When the cable diameter changes or the cable is displaced due to tension, the buckle plate 4 rotates around the rotating column 206c under the tension of the tension spring 403 and adaptively fits the surface of the cable. The elongation of the tension spring 403 changes with the angle of the buckle plate 4, and the clamping force is continuously maintained. The cable is not easy to come out of the conical structure under vibration or tension conditions. The multi-point clamping and anti-bending functions are effective under various working conditions. The deflection range of the buckle plate 4 is limited by the conical ring 304 and the metal spring 305 to prevent the cable from tearing against the buckle plate 4. Multiple support rods 303 are fixed to the outer circumference of the top ring 3. These support rods 303 pass through the strip groove 401 in the middle of the buckle plate 4. When the top ring 3 moves, the support rods 303 slide along the strip groove 401 and are restricted by the buckle plate 4, maintaining a fixed relative movement between the top ring 3 and the buckle plate 4. A conical ring 304 is fixed to the end of each support rod 303. The conical ring 304 is located outside the buckle plate 4 and limits the maximum outward tilt angle of the buckle plate 4. The buckle plate 4 does not exceed this limited angle during opening. A ring-shaped metal spring 305 is fixed at the bottom. The metal spring 305 fits against the outer wall of the buckle plate 4. When the buckle plate 4 is pulled by the cable and the angle is deflected, the metal spring 305 increases the resistance to movement of the buckle plate 4. The angle at which the buckle plate 4 is deflected is limited by the metal spring 305. The end of the buckle plate 4 that contacts the cable is opened with a clamping arc surface 406 with an outwardly convex rounded corner. When the cable rubs against the buckle plate 4, the clamping arc surface 406 guides the cable to slide away. Through this structure, the clamping posture of the buckle plate 4 remains stable under the stress condition, avoiding tearing between the cable and the buckle plate 4. The clamping and anti-bending functions do not fail due to cable pulling. The opening of the conical structure is enlarged by the top ring 3 opening the buckle plate 4, making it easier for the cable to be inserted. When inserting the cable, the operator rotates the mounting sleeve 2 so that the top rings 3 at both ends move in opposite directions. The top of the top ring 3 presses against the inner wall of the buckle plate 4 and pushes the buckle plate 4 outward. The opening of the conical structure increases as the top ring 3 opens, and the cable can smoothly pass through the conical structure at both ends of the mounting sleeve 2 through the enlarged opening. The cable insertion process is not hindered by the buckle plate 4 being closed. After the cable is inserted, the mounting sleeve 2 is rotated in the opposite direction, and the top rings 3 at both ends move towards each other. The buckle plate 4 closes and clamps the cable under the tension of the tension spring 403. The cable insertion and clamping are completed through continuous rotation.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An environmentally friendly photovoltaic distribution box, characterized in that: The distribution box includes a main body (1) and multiple buckles (4). The main body (1) is provided with mounting sleeves (2) in the inlet and outlet slots. Multiple buckles (4) in a ring array form a group, and each mounting sleeve (2) has a set of buckles (4) at both ends. Each buckle (4) can rotate around the end closest to the mounting sleeve (2). The mounting sleeve (2) is provided with a transmission cylinder (205) that rotates synchronously with the mounting sleeve (2). The two ends of the transmission cylinder (205) are provided with transmission threads (205a) with opposite thread orientations. The two ends of the transmission cylinder (205) are respectively connected to a top ring (3) through the transmission threads (205a). The top of the top ring (3) is attached to the inner wall of the buckle plate (4), and the outer wall of the top ring (3) is provided with multiple transmission facets (306) to form a polygonal hollow ring. The two ends of the mounting sleeve (2) are provided with a fixing seat (206) that is adapted to the transmission facets (306) in the middle.

2. The environmentally friendly photovoltaic distribution box according to claim 1, characterized in that: The top of the fixing base (206) is provided with multiple rotating grooves (206b) corresponding to the buckle plate (4). A rotating column (206c) is fixed in the middle of the rotating groove (206b). The buckle plate (4) is provided with a rotating hole (404) that is adapted to the rotating column (206c) at one end near the mounting sleeve (2). The buckle plate (4) is rotatably connected to the rotating column (206c) through the rotating hole (404). The buckle plate (4) is also symmetrically provided with inclined surfaces (405) on both sides. When multiple buckles (4) move towards the center, they form a conical structure for clamping cables.

3. The environmentally friendly photovoltaic distribution box according to claim 2, characterized in that: The bottom of the fixed base (206) is fixed with a support plate (206a). The support plate (206a) has a polygonal groove (206d) in the middle to fit the top ring (3). The top ring (3) has a cable through groove (301) in the middle. The inner wall of the cable through groove (301) has an internal thread (302) to fit the transmission thread (205a). The transmission cylinder (205) rotates and drives the top rings (3) at both ends to move synchronously towards or away from each other through the opposite transmission threads (205a) at both ends. The top rings (3) move closer or further away from each other so that the conical structure formed by the buckle plate (4) comes together or separates.

4. The environmentally friendly photovoltaic distribution box according to claim 3, characterized in that: The top of the tray (206a) is fixed with a plurality of pull rings (208) that are adapted to the buckle plate (4). The inner side wall of the buckle plate (4) is fixed with a hanging ring (402). A tension spring (403) is provided in the middle of the hanging ring (402). The other end of the tension spring (403) is fixed to the middle of the pull ring (208) so that the buckle plate (4) is continuously moved toward the pull ring (208) by the tension of the tension spring (403).

5. The environmentally friendly photovoltaic distribution box according to claim 1, characterized in that: The top of the fixed seat (206) is also fixed with a plurality of support plates (207) that are staggered with the buckle plate (4). The support plate (207) is a curved plate, and the end of the support plate (207) is fixed with a fixing block (207a). The support plate (207) fixes the angle of the fixed seat (206) and the buckle plate (4) through the fixing block (207a). When the mounting sleeve (2) rotates, the fixed seat (206) keeps the angle unchanged to drive the top ring (3) to move along the axis of the transmission cylinder (205). The two ends of the inner wall of the mounting sleeve (2) are fixed with mounting plates (203) to be rotatably connected to the fixed seat (206).

6. The environmentally friendly photovoltaic distribution box according to claim 1, characterized in that: Multiple support rods (303) are fixed to the outer circumference of the top ring (3). A conical ring (304) is fixed to the end of the multiple support rods (303) located on the same top ring (3). The conical ring (304) is used to limit the maximum outward tilt angle of the buckle plate (4). The conical ring (304) moves synchronously with the top ring (3). When the top ring (3) moves away from the mounting sleeve (2) to increase the distance between the buckle plates (4), the conical ring (304) moves synchronously away from the mounting sleeve (2) with the top ring (3) to avoid restricting the movement of the buckle plate (4).

7. The environmentally friendly photovoltaic distribution box according to claim 6, characterized in that: A metal spring (305) is fixed at the bottom of the conical ring (304). The metal spring (305) is annular and fixed at the bottom of the conical ring (304) and fits against the outer wall of the buckle plate (4). When the buckle plate (4) is pulled by the cable and the angle is offset, the metal spring (305) increases the moving resistance of the buckle plate (4) to prevent the cable from tearing with the buckle plate (4). The end of the buckle plate (4) that contacts the cable is opened as a clamping arc surface (406). The clamping arc surface (406) is a smooth outward convex rounded corner. When the cable rubs against the buckle plate (4), the clamping arc surface (406) guides the cable to separate from the buckle plate (4).

8. The environmentally friendly photovoltaic distribution box according to claim 6, characterized in that: The buckle plate (4) has a vertically extending strip groove (401) in the middle corresponding to the support rod (303). When the top ring (3) moves, the support rod (303) moves vertically along the strip groove (401) and is restricted by the buckle plate (4).

9. The environmentally friendly photovoltaic distribution box according to claim 3, characterized in that: The mounting sleeve (2) has a mounting through groove (202) in the middle to accommodate the transmission cylinder (205) through it, and the transmission cylinder (205) has a vertical through groove (205b) in the middle. The vertical groove (205b) coincides with the axis of the cable through groove (301) so that the cable passes through the transmission cylinder (205) and the top ring (3). The outer wall of the middle part of the transmission cylinder (205) is fixed with a transmission ring (204) to compensate for the gap between the transmission cylinder (205) and the mounting sleeve (2). The outer wall of the transmission ring (204) is fixed to the inner wall of the mounting sleeve (2). The mounting sleeve (2) also has an inwardly recessed mounting groove (201) in the middle. The mounting sleeve (2) is rotatably connected to the power distribution box body (1) through the mounting groove (201).

10. The environmentally friendly photovoltaic distribution box according to claim 1, characterized in that: The distribution box body (1) has a rotating door (101) on one side, and an observation window (103) is provided in the middle of the door (101). The inner wall of the distribution box body (1) is fixed with mounting racks (102) to fix electronic components. Ventilation windows (105) are provided on both sides of the distribution box body (1) to dissipate heat from the electronic components. Multiple mounting holes (104) are provided on the side wall of the distribution box body (1) to fix the distribution box body (1).

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