Photovoltaic wiring terminal

Abstract

The photovoltaic wiring terminal comprises a base and a rotary spacer, the base is provided with a first boss and a second boss which are vertically arranged in a staggered mode, the first boss is provided with a plurality of lower-layer flat cable connecting grooves with the top ends and the front ends open, and the second boss is provided with a plurality of upper-layer flat cable connecting grooves with the top ends and the front ends open. Connecting columns are arranged in each upper-layer flat cable connecting groove and each lower-layer flat cable connecting groove, each connecting column is connected with a flat cable nose, and photovoltaic flat cables are fixed to the connecting columns through nuts; positioning holes are symmetrically formed in the outer walls of the two outermost upper-layer flat cable connecting grooves in the second boss; the rotating spacer is provided with spacer grooves, the spacer grooves are arranged corresponding to the upper-layer flat cable connecting grooves, and positioning shafts are symmetrically arranged at the rear ends of the outer walls of the two spacer grooves on the outermost side of the rotating spacer. The positioning shaft is clamped into the positioning hole, the rotating spacer can rotate around the positioning shaft, and a bottom plate of the rotating spacer abuts against the upper end of the first boss. The spacers are easy and convenient to install, and the isolation effect between the flat cables is good.

Description

Technical Field

[0001] The utility model relates to the technical field of wiring terminals, in particular to a photovoltaic wiring terminal. Background Art

[0002] The three-phase five-wire system is a common wiring method in photovoltaic systems, including five terminals: L1 (or R), L2 (or S), L3 (or T), N and PE, which represent the first phase of three-phase electricity, the second phase of three-phase electricity, the third phase of three-phase electricity, the neutral line (zero line) and the protective grounding line (ground line). The existence of the neutral line and the protective grounding line ensures the safety of the system. When the equipment fails or people are electrocuted, the current can be quickly directed to the ground to reduce the possibility of accidents. It can effectively avoid problems such as current overload and voltage instability in the circuit, ensuring the safe and stable operation of the solar power generation system.

[0003] When wiring, it is necessary to ensure that each terminal is connected correctly to avoid short circuit, open circuit or other safety hazards. To prevent the connection wires of each terminal from short circuiting, each terminal is separated by a partition. The partition structure in the existing photovoltaic terminal is simple. Generally, one partition can only isolate one group, and the installation of the partition is relatively troublesome. Utility Model Content

[0004] In order to overcome the disadvantage of complicated installation of photovoltaic terminal spacers in the prior art, the utility model provides a photovoltaic terminal.

[0005] The technical solution of the utility model is as follows:

[0006] A photovoltaic terminal, comprising:

[0007] The base has a first boss and a second boss arranged in an upper and lower dislocation, the first boss is provided with a plurality of lower-layer wiring connection grooves with open tops and front ends, the second boss is provided with a plurality of upper-layer wiring connection grooves with open tops and front ends, each of the upper-layer wiring connection grooves and each of the lower-layer wiring connection grooves is provided with a connecting column, each of the connecting columns is connected to a wiring nose, and a nut fixes the photovoltaic wiring to the connecting column; positioning holes are symmetrically provided on the outer walls of the two outermost upper-layer wiring connection grooves on the second boss;

[0008] A rotating spacer, wherein the rotating spacer is provided with a partition groove, the partition groove is arranged corresponding to the upper wiring connection groove, and positioning shafts are symmetrically arranged on the rear ends of the outer walls of the two outermost partition grooves of the rotating spacer;

[0009] The positioning shaft is clamped into the positioning hole, and the rotating spacer can rotate around the positioning shaft, and the bottom plate of the rotating spacer abuts against the upper end of the first boss.

[0010] Furthermore, in one embodiment, the positioning shaft includes a pin shaft and a limiting plate connected to the top end of the pin shaft, and the maximum diameter of the limiting plate is greater than the shaft diameter of the pin shaft.

[0011] Furthermore, in one embodiment, on the rotating spacer, the front end of the groove wall at the middle position of the groove protrudes beyond the outer walls of the two outermost grooves.

[0012] Furthermore, in one embodiment, a limiting groove is provided on the lower surface of the bottom plate of the rotating spacer, and the top end of the groove wall of the lower layer wiring connection groove is embedded in the limiting groove.

[0013] Furthermore, in one embodiment, the top of the groove wall of the lower layer cable connecting groove is horizontal.

[0014] Furthermore, in one embodiment, the outer walls of the two outermost lower cable connection grooves are provided with fixing grooves, and the lower surface of the bottom plate of the rotating spacer is provided with fixing blocks, and the fixing blocks are inserted into the fixing grooves.

[0015] Further, in one embodiment, the fixing block includes a first fixing block and a second fixing block, and the first fixing block is an L-shaped column;

[0016] The fixing groove includes a first fixing groove and a second fixing groove, the first fixing groove is located on the inner side of the outer wall of the outermost lower cable connection groove, the second fixing groove is located on the front side of the outer wall of the lower cable connection groove, and the front side of the top end of the outer wall of the outermost lower cable connection groove is embedded in the groove enclosed by the first fixing block and the second fixing block.

[0017] Furthermore, in one embodiment, the positioning hole is gourd-shaped with a gradually narrowing diameter in the middle, and the diameter width of the positioning hole at the smallest waist width position is smaller than the diameter width of the positioning shaft.

[0018] Furthermore, in one embodiment, the plurality of lower layer wiring connection grooves have the same groove width and the same groove length;

[0019] The plurality of upper wiring connection grooves have the same groove width and the same groove length.

[0020] Furthermore, in one embodiment, the front side of the bottom plate of the rotating spacer is at least parallel to the front side of the first boss, and the bottom plate of the rotating spacer covers the top end of the lower cable connection groove.

[0021] The utility model according to the above scheme has the beneficial effect that two stepped first and second bosses of different heights are arranged on the base, a lower wiring installation groove is arranged in the first boss, and an upper wiring installation groove is arranged in the second boss, each wiring terminal is separated by the groove wall, and the rotating spacer is inserted into the positioning hole of the second boss through the positioning shaft thereon, and can be flipped upward obliquely. The positioning shaft and the positioning hole are installed in coordination with each other, making the installation of the spacer simple and convenient, and the flippable rotating design makes it possible for the rotating spacer to not hinder the installation of the wiring when connecting the upper and lower layers of the wiring on the first boss, making the wiring connection convenient and quick; the rotating spacer is provided with a partition groove, and the partition groove of the rotating spacer extends the isolation distance between the two wiring terminals on the second boss, separating the wiring in the second boss from the wiring in the first boss, so that each wiring has better isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the rotating spacer in the flipping state;

[0024] Figure 3 It is an exploded view of the utility model;

[0025] Figure 4 for Figure 3 A magnified view of part A;

[0026] Figure 5 It is a schematic diagram of the structure of the rotating spacer.

[0027] In the figure, 100, base; 110, first boss; 1101, lower layer wiring connection groove; 1102, first fixed groove; 1103, second fixed groove; 120, second boss; 1201, upper layer wiring connection groove; 1202, positioning hole; 200, rotating spacer; 210, spacer groove; 220, positioning shaft; 2201, pin shaft; 2202, limiting plate; 230, limiting groove; 240, first fixed block; 250, second fixed block; 310, connecting column; 320, nut. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The terms "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only. In the description of the utility model, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0029] In addition, unless otherwise expressly specified or limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. All technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model.

[0030] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1-Figure 3As shown, the present application provides an embodiment of a photovoltaic wiring terminal, which includes a base 100 and a rotating spacer 200. The base 100 has a first boss 110 and a second boss 120 that are staggered up and down, the first boss 110 is provided with a plurality of lower-layer wiring connection grooves 1101 with open tops and front ends, the second boss 120 is provided with a plurality of upper-layer wiring connection grooves 1201 with open tops and front ends, each upper-layer wiring connection groove and each lower-layer wiring connection groove is provided with a connecting column 310, each connecting column 310 is connected to a wiring nose, and a nut 320 fixes the photovoltaic wiring to the connecting column 310; the second boss Positioning holes 1202 are symmetrically provided on the outer walls of the two outermost upper wiring connection grooves 1201 on 120; the rotating spacer 200 is provided with a groove 210, and the groove 210 is arranged corresponding to the upper wiring connection groove 1201, and positioning shafts 220 are symmetrically provided on the rear ends of the outer walls of the two outermost grooves 210 of the rotating spacer 200; the positioning shaft 220 is snapped into the positioning hole 1202, and the rotating spacer 200 can rotate around the positioning shaft 220, and the bottom plate of the rotating spacer 200 abuts against the upper end of the first boss 110. Two stepped first bosses 110 and second bosses 120 are arranged on the base 100, a lower wiring installation groove 1101 is arranged in the first boss 110, and an upper wiring installation groove 1201 is arranged in the second boss 120, and each wiring terminal is separated by the groove wall. The rotating spacer 200 is inserted into the positioning hole 1202 of the second boss 120 through the positioning shaft 220 thereon, and can be flipped upward obliquely. The coordinated installation of the positioning shaft 220 and the positioning hole 1202 makes the installation of the spacer simple and convenient. The reversible rotating design ensures that when the upper and lower layers of the first boss 110 are connected, the rotating spacer 200 will not hinder the installation of the cable, making the cable connection convenient and quick. The rotating spacer 200 is provided with a partition groove 210. The partition groove 210 of the rotating spacer 200 extends the isolation distance between the two terminal ends on the second boss 120, separates the cables in the second boss 120 and the cables in the first boss 110, so that each cable has better isolation.

[0032] In this embodiment, the first boss 110 is provided with three lower layer wiring connection grooves 1101, which are respectively used to connect the LI / L2L / 3 power lines, and the second boss 120 is provided with two upper layer wiring connection grooves 1201, which are respectively used to connect the N line / PE line. The rotating spacer 200 can be turned over, and the open state ( Figure 2 As shown) flip it to the upper end to install the lower cable nose, and close it after the lower cable nose is installed ( Figure 1The upper cable nose can be installed as shown. The single spacer on the market needs to be installed multiple times for one product, which wastes time. This application is not only easy to install, but also can complete one installation by pressing one product once, avoiding repeated installation and improving the installation efficiency of the product. The positioning shaft 220 is pressed into the positioning hole 1202, and the installation position is accurate; after the rotating spacer 200 of this application is installed, the upper and lower and the upper left and right phases can be isolated.

[0033] like Figure 3 As shown, in one embodiment, the positioning shaft 220 includes a pin 2201 and a limiting piece 2202 connected to the top of the pin 2201, and the maximum diameter of the limiting piece 2202 is greater than the shaft diameter of the pin 2201. The limiting piece 2202 forms a restriction with the groove wall of the partition 210 to prevent the pin 2201 from slipping off the outside of the positioning hole 1202. The firmness of the connection between the rotating partition 200 and the base 100 is enhanced.

[0034] In one embodiment, on the rotating spacer 200, the front end of the groove wall at the middle position of the groove 210 protrudes from the outer walls of the two outermost grooves 210. The longer groove wall of the middle groove 210 separates the upper wiring, and when the photovoltaic terminal is connected to the sealed housing, the longer groove wall of the groove 210 facilitates the separation of the upper wiring.

[0035] like Figure 5 As shown, in one embodiment, a limiting groove 230 is provided on the lower surface of the bottom plate of the rotating spacer 200, and the top of the groove wall of the lower layer cable connection groove is embedded in the limiting groove 230. The top of the groove wall of the lower layer cable connection groove is horizontal. The limiting groove 230 arranged in the middle position of the bottom plate of the rotating spacer 200 increases the connection position between the rotating spacer 200 and the base 100. After installation, the connection between the two is more secure, and the cable cannot enter other lower layer cable connection grooves from the top of the lower layer cable connection groove, thereby enhancing the isolation effect between two adjacent lower layer cable connection grooves on the first boss 110.

[0036] like Figure 3-5As shown, in one embodiment, the outer walls of the two outermost lower cable connection grooves are provided with fixing grooves, and the lower surface of the bottom plate of the rotating spacer 200 is provided with fixing blocks, which are inserted into the fixing grooves. The fixing blocks include a first fixing block 240 and a second fixing block 250, and the first fixing block 240 is an L-shaped column; the fixing grooves include a first fixing groove 1102 and a second fixing groove 1103, the first fixing groove 1102 is located on the inner side of the outer wall of the outermost lower cable connection groove, and the second fixing groove 1103 is located on the front side of the outer wall of the lower cable connection groove, and the top front side of the outer wall of the outermost lower cable connection groove is embedded in the groove enclosed by the first fixing block 240 and the second fixing block 250. The symmetrically designed fixing blocks and fixing grooves increase the connection points between the rotating spacer 200 and the top of the first boss 110, so that after the upper and lower cable noses are installed, the connection between the rotating spacer and the base 100 is more secure. The first fixing block 240 and the second fixing block 250 are respectively embedded in the first fixing groove 1102 and the second fixing groove 1103. The complex interlocking structure design makes the connection between the rotating spacer 200 and the base 100 more ingenious and not easy to separate under non-human external force, thereby ensuring the stability of the structure of the photovoltaic terminal after installation.

[0037] In one embodiment, the positioning hole 1202 is a gourd-shaped hole with a gradually narrowing diameter in the middle, and the diameter width of the smallest position of the waist width of the positioning hole 1202 is smaller than the diameter width of the positioning shaft 220. The positioning shaft 220 is pressed downward from the upper end of the positioning hole 1202, and the positioning shaft 220 is pressed into the circular hole at the lower end of the positioning hole 1202. After that, the wall of the second boss 120 recovers its deformation, and the positioning shaft 220 is clamped in the positioning hole 1202. Only under the action of a strong external force in the correct direction, the rotating spacer 200 will be separated from the base 100. The larger diameter width at the upper end of the positioning hole 1202 facilitates the accurate placement of the positioning shaft 220, and the pressing installation method is simple and the installation efficiency is high. The gourd-shaped design with a thin middle makes it possible for the rotating spacer 200 to not fall off automatically after the installation is completed, and the connection between the rotating spacer 200 and the base 100 is firm. The two positioning shafts 220 are forcibly clamped in through the tight fit of the positioning hole 1202, and the rotating spacer 200 will not fall off.

[0038] In one embodiment, the width and length of the multiple lower wiring connection slots 1101 are the same; the width and length of the multiple upper wiring connection slots 1201 are the same. The regular design of the width and length facilitates the production of the product.

[0039] In one embodiment, the front side of the bottom plate of the rotating spacer 200 is at least parallel to the front side of the first boss 110, and the bottom plate of the rotating spacer 200 covers the top of the lower cable connection groove. The bottom plate of the larger rotating spacer 200 isolates the upper and lower rows of cables.

[0040] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0041] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A photovoltaic terminal, characterized in that: include, The base has a first boss and a second boss arranged in an upper and lower dislocation, the first boss is provided with a plurality of lower-layer wiring connection grooves with open tops and front ends, the second boss is provided with a plurality of upper-layer wiring connection grooves with open tops and front ends, each of the upper-layer wiring connection grooves and each of the lower-layer wiring connection grooves is provided with a connecting column, each of the connecting columns is connected to a wiring nose, and a nut fixes the photovoltaic wiring to the connecting column; positioning holes are symmetrically provided on the outer walls of the two outermost upper-layer wiring connection grooves on the second boss; A rotating spacer, wherein the rotating spacer is provided with a partition groove, the partition groove is arranged corresponding to the upper wiring connection groove, and positioning shafts are symmetrically arranged on the rear ends of the outer walls of the two outermost partition grooves of the rotating spacer; The positioning shaft is clamped into the positioning hole, and the rotating spacer can rotate around the positioning shaft, and the bottom plate of the rotating spacer abuts against the upper end of the first boss.

2. The photovoltaic terminal according to claim 1, characterized in that: The positioning shaft comprises a pin shaft and a limiting piece connected to the top end of the pin shaft, and the maximum diameter of the limiting piece is greater than the shaft diameter of the pin shaft.

3. The photovoltaic terminal according to claim 1, characterized in that: On the rotating partition, the front end of the groove wall at the middle position of the partition groove protrudes from the outer walls of the two outermost partition grooves.

4. The photovoltaic terminal according to claim 1, characterized in that: A limiting groove is provided on the lower surface of the bottom plate of the rotating spacer, and the top end of the groove wall of the lower layer wiring connection groove is embedded in the limiting groove.

5. The photovoltaic terminal according to claim 4, characterized in that: The top of the groove wall of the lower layer wiring connection groove is horizontal.

6. The photovoltaic terminal according to claim 1, characterized in that: The outer walls of the two outermost lower layer wiring connection grooves are provided with fixing grooves, and the lower surface of the bottom plate of the rotating spacer is provided with fixing blocks, and the fixing blocks are inserted into the fixing grooves.

7. The photovoltaic terminal according to claim 6, characterized in that: The fixing block comprises a first fixing block and a second fixing block, wherein the first fixing block is an L-shaped column; The fixing groove includes a first fixing groove and a second fixing groove, the first fixing groove is located on the inner side of the outer wall of the outermost lower cable connection groove, the second fixing groove is located on the front side of the outer wall of the lower cable connection groove, and the front side of the top end of the outer wall of the outermost lower cable connection groove is embedded in the groove enclosed by the first fixing block and the second fixing block.

8. The photovoltaic terminal according to claim 1, characterized in that: The positioning hole is in the shape of a gourd with a gradually narrowing diameter in the middle, and the diameter width of the positioning hole at the smallest waist width position is smaller than the diameter width of the positioning shaft.

9. The photovoltaic terminal according to claim 1, characterized in that: The plurality of lower layer wiring connection grooves have the same groove width and the same groove length; The plurality of upper wiring connection grooves have the same groove width and the same groove length.

10. The photovoltaic terminal according to claim 1, characterized in that: The front side of the bottom plate of the rotating spacer is at least parallel to the front side of the first boss, and the bottom plate of the rotating spacer covers the top end of the lower layer cable connection groove.

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