Cable unwinding and winding structure of photovoltaic junction box

Abstract

The utility model relates to the technical field of photovoltaic junction boxes, in particular to a cable unwinding and winding structure of a photovoltaic junction box, which aims to solve the technical problem that a cable of the photovoltaic junction box in the prior art cannot be stored and can be dragged on the ground, and comprises a photovoltaic junction box body and a winding bin, and the winding bin is arranged on the outer wall of the photovoltaic junction box body. The cable is pulled, the cable drives the winding column to rotate, the winding column rotates to drive the transmission disc to rotate together, the transmission disc drives the traction mechanism to pull the cable, and therefore the cable is released, when the cable needs to be wound, the transmission disc drives the winding column to rotate under the torsion of a torsional spring of the transmission disc to wind and store the cable, and in the process, the transmission disc drives the winding column to rotate to wind and store the cable. It needs to be noted that the traction mechanism can pull the cable, so that when the cable is wound on the winding column, the cable is obliquely wound in one direction in sequence.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic junction box technical field more specifically, relate to a kind of cable unwinding and winding structure of photovoltaic junction box. BACKGROUND

[0002] Photovoltaic junction box is the key component in photovoltaic power generation system, mainly used for connecting photovoltaic module and inverter, its main functions include providing electrical connection, protecting photovoltaic module from overload and short circuit, and waterproof and dustproof, to ensure the stable operation of system. Fuse and anti-backflow device are usually equipped in junction box to improve safety. In addition, some high-end junction boxes also have temperature monitoring function, which can monitor system status in real time, to ensure the efficiency and safety of photovoltaic power generation.

[0003] The cable of the photovoltaic junction box in the prior art cannot be stored after connecting the photovoltaic module and the inverter, which may cause the cable to be dragged on the ground, which not only may cause tripping or falling, especially in areas where people frequently move, increasing the risk of accidents, and the dragged cable is not easy to manage, increasing the difficulty of later maintenance and troubleshooting. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the deficiency of prior art, adapting to reality needs, providing a kind of cable unwinding and winding structure of photovoltaic junction box, to solve the technical problem that the cable of photovoltaic junction box in prior art cannot be stored, which may cause the cable to be dragged on the ground.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of cable unwinding and winding structure of photovoltaic junction box, including photovoltaic junction box body, further including winding warehouse, the winding warehouse is arranged on the outer wall of the photovoltaic junction box body, the inner wall of the winding warehouse is provided with the rotary joint of electric connection with the photovoltaic junction box body, the other end of the rotary joint is provided with cable, the outer wall of the winding warehouse is provided with the sliding slot being penetrated, the inner wall of the winding warehouse is hinged with transmission disc by torsional spring, the other end of the transmission disc is fixedly connected with winding column, the outer wall of the winding column is fixedly connected with limiting ring, the sliding slot is provided with traction mechanism for the traction of cable winding and unwinding.

[0006] The traction mechanism comprises a threaded rod, the threaded rod is rotationally connected to the inner end wall of the chute, the inner wall of the chute is slidingly connected with a traction block, the outer wall of the traction block is provided with a traction groove penetrating the traction block, one end of the threaded rod penetrates and is threadedly connected with the traction block, the other end of the threaded rod is fixedly connected with a transmission column, the outer wall of the transmission column abuts against the outer wall of the transmission disc, the other end of the cable passes through the limiting ring, is wound on the outer wall of the winding column and passes through the traction groove; by pulling the cable, the cable drives the winding column to rotate, the winding column drives the transmission disc to rotate together, so that the transmission disc drives the traction mechanism to pull the cable, thereby completing the release of the cable; when it is needed to wind the cable, the transmission disc drives the winding column to rotate under the torsional force of the torsional spring, thereby winding and storing the cable; in this process, it should be noted that the traction mechanism pulls the cable, so that the cable is sequentially and obliquely wound in one direction when being wound on the winding column, thereby preventing the cable from overlapping on the winding column when winding the cable, so as to ensure that the cable is not entangled when being used, and the winding radius of the cable is increased, thereby avoiding that the cable is excessively bent and damaged.

[0007] Preferably, the outer wall of the winding column is protruded to form a spiral structure, and the cable is sequentially wound between the spiral structures formed by the winding column; the spiral structure formed by the outer wall of the winding column can guide the cable when being wound on the winding column, so that the radius and the inclination angle of the cable winding are controlled, thereby further preventing the cable from overlapping on the winding column.

[0008] Preferably, the outer wall of the winding bin is provided with a plate groove, the inner wall of the plate groove is slidingly connected with a sliding plate, the inner wall of the plate groove is provided with a receiving groove in communication with the inside of the winding bin, the inner wall of the receiving groove is hingedly connected with a pressing plate through a torsional spring, the side of the sliding plate close to the pressing plate is fixedly connected with a push plate, and the other end of the push plate abuts against the outer wall of the pressing plate; the push plate is arranged to press the pressing plate, so that the pressing plate abuts against the transmission disc, thereby preventing the transmission disc from rotating, and preventing the winding column from pulling the cable, so that the length of the cable after being released can be controlled, and the cable is not pulled after being released, thereby preventing the cable from being damaged by being pulled.

[0009] Preferably, the side of the pressing plate away from the push plate is fixedly connected with a rubber sheet, and the other side of the rubber sheet abuts against the outer wall of the transmission disc when the pressing plate is twisted; the rubber sheet is arranged to increase the stability of the pressing plate when the pressing plate presses the transmission disc to rotate.

[0010] Preferably, the outer wall of the wire winding bin is fixedly connected with a plurality of fixed plates, the fixed plates are provided with fastening bolts, and the fixed plates are connected with the photovoltaic junction box body through the fastening bolts.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The utility model discloses a photovoltaic junction box body, a wire winding bin, a rotary joint, a cable, a chute, a transmission disc, a wire winding column, a limiting ring and a traction mechanism are set up, the cable drives the wire winding column to rotate by pulling the cable, the wire winding column drives the transmission disc to rotate together, the transmission disc drives the traction mechanism to traction the cable, thereby completing the release of the cable, when winding the cable, the wire winding column is driven to rotate to the cable and is taken up under the torsional spring torsion of the transmission disc, in this process, it is necessary to note that the traction mechanism will traction the cable, when the cable is wound on the wire winding column, the cable is inclined and wound to one direction in order, thereby when completing the winding of the cable, the cable can be prevented from overlapping on the wire winding column, so that the cable is not entangled when using, and because of the inclined winding, the winding radius of the cable can be increased, and the cable is prevented from being damaged by excessive bending.

[0013] 2. The spiral structure formed by the outer wall of the wire winding column in the utility model makes the spiral structure of the wire winding column guide the winding of the cable when the cable is wound on the wire winding column, so that the radius and the inclination angle of the winding of the cable are controlled, and the cable is further prevented from overlapping on the wire winding column. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a sectional view of the wire winding bin in the utility model;

[0016] Figure 3 It is Figure 2 It is the partial close-up view of A in the utility model;

[0017] Figure 4 It is a sectional view of the wire winding column in the utility model;

[0018] Figure 5 It is a structural schematic view of the extrusion plate in the utility model.

[0019] Explanation of reference numerals in the drawing:

[0020] 1, photovoltaic junction box body; 2, winding bin; 3, rotary joint; 4, cable; 5, sliding groove; 6, transmission disc; 7, winding column; 8, limiting ring; 9, threaded rod; 10, traction block; 11, traction groove; 12, transmission column; 13, plate groove; 14, sliding plate; 15, storage groove; 16, extrusion plate; 17, push plate; 18, rubber sheet; 19, fixed plate; 20, fastening bolt. DETAILED DESCRIPTION

[0021] As Figures 1 to 5 shown, the utility model relates to: a kind of cable unwinding and winding structure of photovoltaic junction box, including photovoltaic junction box body 1, also including winding bin 2, the inner wall of the winding bin 2 is provided with the rotary joint 3 being electrically connected with the photovoltaic junction box body 1, another end of the rotary joint 3 is provided with cable 4, the outer wall of the winding bin 2 is provided with the sliding groove 5 being penetrated, the inner wall of the winding bin 2 is hinged with transmission disc 6 by torsional spring, another end of the transmission disc 6 is fixedly connected with winding column 7, the outer wall of the winding column 7 is fixedly connected with limiting ring 8, sliding groove 5 is provided with traction mechanism for the traction of cable 4 unwinding and winding.

[0022] The traction mechanism includes threaded rod 9, the threaded rod 9 is rotatably connected at the inner end wall of the sliding groove 5, the inner wall of the sliding groove 5 is slidably connected with traction block 10, the outer wall of the traction block 10 is provided with the traction groove 11 being penetrated, one end of the threaded rod 9 is penetrated with the traction block 10 and is threadedly connected, another end of the threaded rod 9 is fixedly connected with transmission column 12, the outer wall of the transmission column 12 is abutted with the outer wall of the transmission disc 6, another end of the cable 4 is wound on the outer wall of the winding column 7 and is penetrated with the traction groove 11 through the limiting ring 8;By pulling cable 4, cable 4 drives winding column 7 to rotate, winding column 7 drives transmission disc 6 to rotate together, so that transmission disc 6 drives traction mechanism to pull cable 4, to complete the release of cable 4, and when winding cable 4 is needed, transmission disc 6 drives winding column 7 to rotate under the torsional spring torsion of itself to wind cable 4, and in this process, it needs to be noted that traction mechanism will pull cable 4, so that cable 4 is tilted and wound in sequence in one direction when winding on winding column 7, so that cable 4 can be prevented from overlapping on winding column 7 while winding, to ensure that cable 4 will not be entangled when in use, and since it is inclined winding, the winding radius of cable 4 can also be increased, to avoid that cable 4 is damaged due to excessive bending.

[0023] Further, the outer wall of the winding column 7 is protruded to form a spiral structure, and the cable 4 is orderly wound between the spiral structures formed by the winding column 7; the spiral structure formed by the outer wall of the winding column 7 can guide the winding of the cable 4, so that the radius and the inclination angle of the winding of the cable 4 are controlled, and the cable 4 is further prevented from overlapping on the winding column 7.

[0024] Further, the outer wall of the winding column 7 is protruded to form a spiral structure, and the cable 4 is orderly wound between the spiral structures formed by the winding column 7; the spiral structure formed by the outer wall of the winding column 7 can guide the winding of the cable 4, so that the radius and the inclination angle of the winding of the cable 4 are controlled, and the cable 4 is further prevented from overlapping on the winding column 7.

[0025] Further, the outer wall of the winding column 7 is protruded to form a spiral structure, and the cable 4 is orderly wound between the spiral structures formed by the winding column 7; the spiral structure formed by the outer wall of the winding column 7 can guide the winding of the cable 4, so that the radius and the inclination angle of the winding of the cable 4 are controlled, and the cable 4 is further prevented from overlapping on the winding column 7.

[0026] Further, the outer wall of the winding column 7 is protruded to form a spiral structure, and the cable 4 is orderly wound between the spiral structures formed by the winding column 7; the spiral structure formed by the outer wall of the winding column 7 can guide the winding of the cable 4, so that the radius and the inclination angle of the winding of the cable 4 are controlled, and the cable 4 is further prevented from overlapping on the winding column 7.

[0027] Working principle: the cable unwinding structure of the photovoltaic junction box provided by the embodiment is used, when the cable 4 needs to be released, the cable 4 is only pulled, the cable 4 drives the winding column 7 to rotate, the winding column 7 drives the transmission disc 6 to rotate, the transmission disc 6 drives the transmission column 12 to rotate, the transmission column 12 drives the threaded rod 9 to rotate, and the threaded rod 9 drives the traction block 10 to slowly move in the sliding groove 5, so as to complete the release of the cable 4.

[0028] When the cable 4 needs to be wound, the transmission disc 6 drives the winding column 7 to rotate under the torsion of the transmission disc 6, so that the winding column 7 rotates to wind the cable 4, and at this time, the traction block 10 starts to reset and move, so that the traction groove 11 on the traction block 10 pulls the cable 4 to be wound, so that the cable 4 spirally winds on the outer wall of the winding column 7 at a certain inclined angle, and it should be noted that the cable 4 is electrically connected with the rotary joint 3, so that the cable 4 will not be twisted when winding on the winding column 7, thereby preventing the cable 4 from being twisted and broken;

[0029] When the cable 4 needs to be wound, the transmission disc 6 drives the winding column 7 to rotate under the torsion of the transmission disc 6, so that the winding column 7 rotates to wind the cable 4, and at this time, the traction block 10 starts to reset and move, so that the traction groove 11 on the traction block 10 pulls the cable 4 to be wound, so that the cable 4 spirally winds on the outer wall of the winding column 7 at a certain inclined angle, and it should be noted that the cable 4 is electrically connected with the rotary joint 3, so that the cable 4 will not be twisted when winding on the winding column 7, thereby preventing the cable 4 from being twisted and broken;

[0030] The embodiments of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill of the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A cable unwinding structure for a photovoltaic junction box, comprising a photovoltaic junction box body (1), characterized in that, It also includes a winding compartment (2), which is disposed on the outer wall of the photovoltaic junction box body (1). The inner wall of the winding compartment (2) is provided with a rotary joint (3) that is electrically connected to the photovoltaic junction box body (1). The other end of the rotary joint (3) is provided with a cable (4). The outer wall of the winding compartment (2) is provided with a sliding groove (5) through which the cable (4) passes. The inner wall of the winding compartment (2) is hinged with a transmission disc (6) by a torsion spring. The other end of the transmission disc (6) is fixedly connected with a winding post (7). The outer wall of the winding post (7) is fixedly connected with a limit ring (8). The sliding groove (5) is provided with a traction mechanism for pulling the cable (4) for winding and unwinding.

2. The cable unwinding structure of a photovoltaic junction box according to claim 1, characterized in that, The traction mechanism includes a threaded rod (9), which is rotatably connected to the inner end wall of the slide groove (5). A traction block (10) is slidably connected to the inner wall of the slide groove (5). A traction groove (11) is opened on the outer wall of the traction block (10) to pass through it. One end of the threaded rod (9) passes through the traction block (10) and is threadedly connected. The other end of the threaded rod (9) is fixedly connected to a transmission column (12). The outer wall of the transmission column (12) abuts against the outer wall of the transmission disc (6). The other end of the cable (4) passes through the limiting ring (8), wraps around the outer wall of the winding column (7), and passes through the traction groove (11).

3. The cable unwinding structure of a photovoltaic junction box according to claim 1, characterized in that, The outer wall of the winding post (7) protrudes to form a spiral structure, and the cable (4) is wound in an orderly manner between the spiral structures formed by the winding post (7).

4. The cable unwinding structure of a photovoltaic junction box according to claim 1, characterized in that, The outer wall of the winding compartment (2) is provided with a plate groove (13), and a sliding plate (14) is slidably connected to the inner wall of the plate groove (13). The inner wall of the plate groove (13) is provided with a storage groove (15) that communicates with the inside of the winding compartment (2). The inner wall of the storage groove (15) is hinged with a pressing plate (16) by a torsion spring. A push plate (17) is fixedly connected to the side of the sliding plate (14) near the pressing plate (16), and the other end of the push plate (17) abuts against the outer wall of the pressing plate (16).

5. The cable unwinding structure of a photovoltaic junction box according to claim 4, characterized in that, A rubber sheet (18) is fixedly connected to the side of the extrusion plate (16) away from the push plate (17), and the other side of the rubber sheet (18) abuts against the outer wall of the transmission disk (6) when the extrusion plate (16) twists.

6. The cable unwinding structure of a photovoltaic junction box according to claim 1, characterized in that, The outer wall of the winding compartment (2) is fixedly connected with multiple fixing plates (19), and fastening bolts (20) are provided on the fixing plates (19). The fixing plates (19) are connected to the photovoltaic junction box body (1) through the fastening bolts (20).

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