Cable fixing device of photovoltaic inverter

Abstract

The utility model discloses a cable fixing device of a photovoltaic inverter, which comprises a fixing substrate, and a cable fixing seat is arranged on the fixing substrate. The cable fixing seat is provided with a plurality of cable loading slots, and each cable loading slot comprises a bearing bottom wall, a limiting bulge outer edge wall with an open end and a cable terminal limiting part; the two sides of the open end are respectively provided with a wire clamping elastic buckle, and the cable terminal limiting part is provided with two terminal fixing elastic buckles which are oppositely arranged. According to the utility model, the cable limiting and locking requirements can be met, the relative position precision of the cable terminal is guaranteed, the assembly and connection cooperation is facilitated, the relative limiting of the cable is reliable and stable, and the electric conduction stability is improved. The carrying position precision of the cable fixing seat on the fixing substrate is guaranteed, the positioning and locking matching structure of the cable fixing seat is reliable and ingenious, and the structural strength is guaranteed. The safety protection design is achieved, safety is guaranteed, meanwhile, selective combination can be conducted through the connecting thin walls, and using is quite ingenious and flexible.

Description

Technical Field

[0001] The utility model relates to a fixing cable device for a photovoltaic inverter, belonging to the technical field of cable fixing. Background Art

[0002] An inverter is a power regulation device composed of semiconductor devices, mainly used to convert DC power into AC power. It is generally composed of a boost circuit and an inverter bridge circuit. The boost circuit boosts the DC voltage of the solar cell to the DC voltage required for the inverter output control; the inverter bridge circuit converts the boosted DC voltage into an AC voltage of a common frequency.

[0003] There is a relative matching assembly between the fixed substrate and the PCB board in the photovoltaic inverter, that is, several cables need to be fixed on the fixed substrate, and the PCB board has several conductive locking connections corresponding to the cables. In view of this situation, the current cable adopts the structure of cable body and cable terminal, and the cable terminal is connected with the PCB board through the conductive locking connection. During the specific operation, the fixed substrate is relatively fixed. First, the conductive locking is performed between the cable terminal and the PCB board, and then the relative locking is performed between the cable body and the fixed substrate, and finally the PCB board is fixed. Such operation is difficult to assemble, especially there is a certain wiring difficulty between the cable and the fixed substrate, and the cable terminal cannot be effectively fixed after the combination. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art, and to propose a fixing cable device for a photovoltaic inverter in view of the problem that the traditional clamp limit locking position between the base plate and the cable is unreliable and affects the assembly efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A photovoltaic inverter cable fixing device comprises a cable and a fixing base plate for mounting the cable, wherein the cable comprises a cable body and a cable terminal arranged on the cable body, and the fixing base plate is provided with a cable fixing seat for limiting the position of the cable;

[0007] The cable fixing seat is provided with a plurality of cable loading slots, the cable loading slots comprising a supporting bottom wall, a limiting protrusion outer edge wall with an open end arranged on the supporting bottom wall, and a cable terminal limiting portion arranged away from the open end at one end of the limiting protrusion outer edge wall;

[0008] The two sides of the open end are respectively provided with wire clamping buckles for limiting the cable body, and the cable terminal limiting portion is provided with two terminal fixing buckles arranged oppositely on the outer edge wall of the limiting protrusion.

[0009] Preferably, a positioning through-hole is provided on the cable terminal, and the cable terminal limiting portion includes a terminal positioning pin provided on the supporting bottom wall.

[0010] Preferably, a relative positioning mechanism is provided between the fixed substrate and the cable fixing base.

[0011] Preferably, the relative positioning mechanism includes a plurality of positioning blind holes provided on the bottom wall of the cable fixing base, and a plurality of positioning pins provided on the fixed substrate and arranged in one-to-one correspondence with the positioning blind holes.

[0012] Preferably, a bolt locking mechanism is provided between the fixed substrate and the cable fixing base. The bolt locking mechanism includes a nut hole position provided on the fixed substrate and a locking screw hole position provided on the cable fixing base and corresponding to the nut hole position for cooperation.

[0013] Preferably, a plurality of groups of double-load slot groups arranged in series are provided on the cable fixing base. Any one of the double-load slot groups includes two cable loading slot positions and a matching connection portion provided between the two cable loading slot positions;

[0014] A relative positioning mechanism and a bolt locking mechanism are provided between the matching connection portion and the fixed substrate.

[0015] Preferably, two safety protection plates are provided on the double-load slot group and are arranged opposite to the wire clamping spring buckle and opposite to the terminal fixing spring buckle. Adjacent double-load slot groups are connected by the two safety protection plates.

[0016] Preferably, a connecting thin wall is provided at the connecting end of the safety protection plates of adjacent double-load slot groups.

[0017] The beneficial effects of the present utility model are mainly reflected in:

[0018] 1. It can meet the requirements of limiting and locking the cable terminal and the cable body. The relative position accuracy of the cable terminal is guaranteed, which is convenient for assembly and connection. The relative limit of the cable is reliable and stable, improving the electrical conduction stability.

[0019] 2. The positioning accuracy of the cable fixing base on the fixed substrate is guaranteed. The positioning and locking cooperation structure of the cable fixing base is also reliable and ingenious, ensuring the structural strength.

[0020] 3. It has a safety protection design, ensuring safety. At the same time, it can be selectively combined through the connecting thin wall, and the use is very ingenious and flexible. Description of the Drawings

[0021] Other features, objectives, and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 It is a schematic structural view of a cable fixing base in a cable fixing device of a photovoltaic inverter of the present utility model.

[0023] Figure 2 It is a schematic structural view of another perspective of the cable fixing base in the cable fixing device of a photovoltaic inverter of the present utility model.

[0024] Figure 3 It is a schematic structural view of a double-load slot group in the cable fixing device of a photovoltaic inverter of the present utility model.

[0025] Figure 4 It is a schematic structural view of a first embodiment of the cable fixing device of a photovoltaic inverter of the present utility model.

[0026] Figure 5 It is a schematic structural view of a second embodiment of the cable fixing device of a photovoltaic inverter of the present utility model.

[0027] Figure 6 It is a schematic relative assembly structural view of the cable fixing device of a photovoltaic inverter of the present utility model and a PCB board. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] The following further elaborates the present application in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely for explaining the relevant utility model and not for limiting the utility model. Additionally, it should be noted that for the sake of description, only parts related to the relevant utility model are shown in the drawings. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0030] The present utility model provides a cable fixing device for a photovoltaic inverter, as Figures 1 to 6 shown, including a cable 100 and a fixing substrate 200 for carrying the cable. The cable 100 includes a cable body 110 and a cable terminal 120 provided on the cable body 110.

[0031] Reference Figure 6 As shown, in the matching assembly of the traditional photovoltaic inverter, there is a relative assembly cooperation between the fixed substrate 200, the cable 100, and the PCB board 300. The relative position of the fixed substrate 200 and the PCB board 300 themselves limits the assembly. At the same time, it is necessary to complete the mounting of the cable 100 on the fixed substrate 200 and the conductive matching between the cable 100 and the PCB board. In the traditional assembly structure, the cable body 110 is locked by a clamp, which is difficult to ensure the fixation and relative position of the cable terminal 120. It is necessary to first conduct the conductive matching between the cable terminal 120 and the PCB board, and then lock the cable terminal 120 with the clamp, and finally fix the fixed substrate 200 and the PCB board 300. In this way, the cable locking stability is poor, there is movement inside, which is easy to cause the conduction to loosen, and the assembly is also more cumbersome.

[0032] In this case, if Figures 1 to 6 As shown, a cable fixing seat 1 for limiting the position of the mounted cables is provided on the fixed base plate 200 .

[0033] The cable fixing seat 1 is provided with a plurality of cable loading slots 2, which include a supporting bottom wall 21, a limiting protruding outer edge wall 23 with an open end 22 arranged on the supporting bottom wall, and a cable terminal limiting portion 24 arranged at one end away from the open end.

[0034] Wire clamping spring buckles 3 for limiting the cable body 110 are respectively provided on both sides of the open end, and the cable terminal limiting portion is provided with two terminal fixing spring buckles 4 arranged opposite to each other on the outer edge wall of the limiting protrusion.

[0035] Specific implementation process and principle description:

[0036] The cable fixing seat 1 is locked on the fixed base plate 200. When the cable 100 is mounted, the cable terminal 120 is limited and set in the cable terminal limiting portion 24, and the outer periphery is limited by the limiting protrusion outer edge wall 23. At this time, the terminal fixing spring buckle 4 locks the cable terminal 120. The cable body 110 is arranged along the extension of the supporting bottom wall 21 to the open end 22, and the cable body 110 is locked by the wire clamping spring buckle 3. In this way, the high-precision limit locking and restriction requirements of the cable terminal 120 and the cable body 110 are met when the cable 100 is mounted. The relative positioning is accurate when the PCB board is connected and matched at the back end, making the assembly more convenient and quick. At the same time, the cable 100 is limited, and it is not easy for the cable 100 to get loose.

[0037] In a specific embodiment, a positioning through hole is provided on the cable terminal 120, and the cable terminal limiting portion 24 includes a terminal positioning pin 240 disposed on the supporting bottom wall.

[0038] That is, when the cable terminal 120 is mounted, the terminal positioning pin 240 can meet the requirements for mounting positioning and limiting of the cable terminal 120, and the mounting position accuracy and reliability of the cable terminal 120 are further improved.

[0039] In a specific embodiment, a relative positioning mechanism 5 is provided between the fixed substrate 200 and the cable fixing base 1.

[0040] The relative positioning mechanism includes a plurality of positioning blind holes 51 provided on the bottom wall of the cable fixing base and a plurality of positioning pins 52 provided on the fixed substrate and arranged in one-to-one correspondence with the positioning blind holes.

[0041] That is, through the cooperation of the positioning pin 52 and the positioning blind hole 51, the relative position degree can be limited.

[0042] In a specific embodiment, a bolt locking mechanism 6 is provided between the fixed substrate and the cable fixing base. The bolt locking mechanism includes a nut hole position 61 provided on the fixed substrate and a locking screw hole position 62 provided on the cable fixing base and corresponding to and cooperating with the nut hole position.

[0043] That is, the fixed substrate and the cable fixing base are locked by passing a bolt through the locking screw hole position 62 and the nut hole position 61.

[0044] Of course, other locking structures can also be used. For example, by means of glue bonding, etc., as long as the relative fixing structure between the fixed substrate and the cable fixing base is satisfied, it is within the protection scope of this case.

[0045] In a specific embodiment, as Figure 1 shown, the cable fixing base 1 is provided with a plurality of groups of double-loading groove groups 7 arranged in an associated row. Any double-loading groove group 7 includes two cable loading groove positions 2 and a mating connection portion 70 provided between the two cable loading groove positions; a relative positioning mechanism and a bolt locking mechanism are provided between the mating connection portion and the fixed substrate.

[0046] Referring to Figures 1 to 6 shown, the relative positioning mechanism 5 and the bolt locking mechanism 6 are mounted through the mating connection portion 70, so as to meet the requirements for the mating and connection strength of the cable fixing base 1 and will not affect the cable loading groove position 2.

[0047] In a specific embodiment, two safety protection plates 8 are provided on the double-loading groove group 7 and are arranged opposite to the wire clamping spring buckle and opposite to the terminal fixing spring buckle. The two safety protection plates are connected between adjacent double-loading groove groups.

[0048] The safety protection plate 8 is used to increase the creepage distance and has higher safety.

[0049] In a specific embodiment, a connecting thin wall 9 is provided at the connecting end of the safety protection plates of adjacent double-load slot groups.

[0050] That is, in practical applications, the connecting thin wall 9 can be broken and separated according to the actual quantity requirement of the double-load slot groups 7, so the application is more flexible.

[0051] Through the above description, it can be found that the fixed cable device of a photovoltaic inverter of the present utility model can meet the requirements of limiting and locking the cable terminals and the cable body, the relative position accuracy of the cable terminals is guaranteed, it is convenient to carry out assembly and connection cooperation, the relative limit of the cable is reliable and stable, and the electrical conduction stability is improved. The mounting position accuracy of the cable fixing seat on the fixed substrate is guaranteed, and the positioning and locking cooperation structure of the cable fixing seat is also relatively reliable and ingenious, and the structural strength is guaranteed. It has a safety protection design, the safety is guaranteed, and at the same time, it can be selectively combined through the connecting thin wall, and the use is very ingenious and flexible.

[0052] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, method, article or device / equipment comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in these processes, methods, articles or devices / equipment.

[0053] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A photovoltaic inverter cable fixing device, comprising a cable and a fixing substrate for mounting the cable, wherein the cable comprises a cable body and a cable terminal arranged on the cable body, characterized in that: The fixed base plate is provided with a cable fixing seat for limiting the position of the cable; The cable fixing seat is provided with a plurality of cable loading slots, the cable loading slots comprising a supporting bottom wall, a limiting protrusion outer edge wall with an open end arranged on the supporting bottom wall, and a cable terminal limiting portion arranged away from the open end at one end of the limiting protrusion outer edge wall; The two sides of the open end are respectively provided with wire clamping buckles for limiting the cable body, and the cable terminal limiting portion is provided with two terminal fixing buckles arranged oppositely on the outer edge wall of the limiting protrusion.

2. A photovoltaic inverter fixing cable device according to claim 1, characterized in that: The cable terminal is provided with a positioning through hole, and the cable terminal limiting portion includes a terminal positioning pin arranged on the supporting bottom wall.

3. A photovoltaic inverter fixing cable device according to claim 1, characterized in that: A relative positioning mechanism is provided between the fixed base plate and the cable fixing seat.

4. A photovoltaic inverter fixing cable device according to claim 3, characterized in that: The relative positioning mechanism comprises a plurality of positioning blind holes arranged on the bottom wall of the cable fixing seat, and a plurality of positioning pins arranged on the fixing base plate and corresponding to the positioning blind holes one by one.

5. The photovoltaic inverter fixing cable device according to claim 1, characterized in that: A bolt locking mechanism is provided between the fixed base plate and the cable fixing seat, and the bolt locking mechanism comprises a nut hole position provided on the fixed base plate and a locking screw hole position provided on the cable fixing seat and corresponding to the nut hole position.

6. A photovoltaic inverter fixing cable device according to any one of claims 1 to 5, characterized in that: The cable fixing seat is provided with a plurality of double loading slot groups arranged in a row, and any of the double loading slot groups includes two of the cable loading slots and a matching connection portion arranged between the two cable loading slots; A relative positioning mechanism and a bolt locking mechanism are provided between the matching connection portion and the fixed base plate.

7. A photovoltaic inverter fixing cable device according to claim 6, characterized in that: The double loading slot group is provided with two safety protection plates which are arranged opposite to the wire clamping spring buckle and the terminal fixing spring buckle, and adjacent double loading slot groups are connected via the two safety protection plates.

8. A photovoltaic inverter fixing cable device according to claim 7, characterized in that: A connecting thin wall is provided on the connecting ends of the safety protection plates of the adjacent double loading slot groups.

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