Sealed threading structure and photovoltaic inverter

Abstract

The utility model discloses a sealed threading structure and a photovoltaic inverter. The sealing threading structure comprises a first frame, at least one threading module unit and a second frame, one side of the first frame is provided with at least one notch, and the notches extend to the upper end face and the lower end face of the first frame; the threading module units and the notches are arranged in a one-to-one correspondence mode, the threading module units are made of elastic materials, each threading module unit is provided with at least one threading hole, and the threading holes are used for allowing cables to penetrate through; the second frame is fixedly arranged on one side of the first frame, and when the second frame is fixedly connected with the first frame, the threading module unit can generate elastic deformation so as to eliminate gaps between the threading module unit and the cable and gaps between the threading module unit and the first frame and the second frame. According to the utility model, the gaps between the threading module unit and the cable and between the threading module unit and the first frame and the second frame can be eliminated, thereby achieving the waterproof and dustproof purposes.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, in particular to a sealed wire threading structure and a photovoltaic inverter. Background Art

[0002] Solar energy is a clean and renewable energy source. my country's solar energy resources are widely and evenly distributed, and sunlight is abundant. Photovoltaic power generation technology utilizing solar energy is highly mature. As a core component of the entire power generation system, the photovoltaic inverter converts the direct current generated by the photovoltaic panels into alternating current. As photovoltaic inverters evolve toward miniaturization and higher power, heat dissipation within these inverters has become a key technology. To address this heat dissipation issue, multiple cooling fans are typically installed externally. The fan cables must pass through the inverter casing and connect to internal boards to control the fans. This creates the problem of sealing the cooling fan cables to prevent moisture and dust from entering the inverter through the cables. The main solution in the related art is to use a single multi-hole waterproof connector or multiple single-hole waterproof connectors. While these methods address the waterproof and dustproof requirements of the inverter casing after wiring, they are complex to assemble. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a sealed cable threading structure for photovoltaic inverters, which ensures waterproof and dustproof cable threading at the inverter cable threading position and is simple and convenient to assemble.

[0004] The utility model also provides a photovoltaic inverter adopting the sealed wire threading structure.

[0005] According to the sealed threading structure of the embodiment of the first aspect of the present invention, it includes a first frame, at least one threading module unit and a second frame, and at least one notch is provided on one side of the first frame, and the notch extends to the upper end face and the lower end face of the first frame; the threading module units are arranged in a one-to-one correspondence with the notches, and the threading module units are made of elastic material, and the threading module units are provided with at least one wire hole, and the wire hole is used for threading cables; the second frame is used to be fixed on one side of the first frame, and when the second frame is fixedly connected to the first frame, the threading module unit can be elastically deformed to eliminate the gap between the threading module unit and the cable and between the threading module unit and the first frame and the second frame.

[0006] According to the sealing wire penetrating structure, the following beneficial effects are achieved: the sealing wire penetrating structure is made of an elastic material, the wire penetrating module unit is provided with a wire penetrating hole, the cable of the heat dissipation fan can be arranged in the wire penetrating hole, when the second frame is fixedly connected with the first frame, the wire penetrating module unit can be elastically deformed, so that the gap between the wire penetrating module unit and the cable and the gap between the wire penetrating module unit and the first frame and the second frame are eliminated, water and dust are prevented from entering the photovoltaic inverter from the gaps between the wire penetrating module unit and the cable and the gaps between the wire penetrating module unit and the first frame and the second frame, and the purposes of waterproof and dustproof are achieved.

[0007] According to some embodiments of the utility model, the wire penetrating module unit is provided with a first slot, along the axial direction of the wire penetrating hole, the first slot extends to the upper end face and the lower end face of the wire penetrating module unit, and the first slot penetrates the side wall of the wire penetrating hole and the side wall of the wire penetrating module unit, so that the cable can be clamped into the wire penetrating hole along the first slot.

[0008] According to some embodiments of the utility model, the wire penetrating hole is provided with at least two, the wire penetrating module unit is provided with a first slot and a second slot, along the axial direction of the wire penetrating hole, the first slot extends to the upper end face and the lower end face of the wire penetrating module unit, and the first slot penetrates the side wall of one of the wire penetrating holes and the side wall of the wire penetrating module unit, so that the cable can be clamped into the wire penetrating hole along the first slot, the second slot is arranged in the wire penetrating module unit, along the axial direction of the wire penetrating hole, the second slot extends to the upper end face and the lower end face of the wire penetrating module unit, and the second slot penetrates the side wall of the wire penetrating hole, so that the wire penetrating holes are sequentially connected, so that the cable can be clamped into the corresponding wire penetrating hole away from the first slot along the first slot and the second slot.

[0009] According to some embodiments of the utility model, the wire penetrating module unit is provided with at least two, the number of the wire penetrating holes on the at least two wire penetrating module units is different.

[0010] According to some embodiments of the utility model, the wire penetrating module unit is provided with at least two, the number of the wire penetrating holes on the at least two wire penetrating module units is different.

[0011] According to some embodiments of the utility model, the first frame is provided with a connecting hole, and the connecting hole is used for arranging a fastener.

[0012] The photovoltaic inverter according to the second aspect of the utility model, including the casing, be equipped with mainframe box in the casing, be equipped with the opening on the mainframe box, and the sealing wire structure of any one of above-mentioned, the sealing wire structure is equipped in the mainframe box, the opening is used for the cable of the wire module unit is equipped in the wire module unit is inserted.

[0013] The photovoltaic inverter according to the utility model embodiment has at least the following beneficial effects: the photovoltaic inverter of the utility model adopts the sealing wire structure, can avoid moisture and dust from the wire module unit and cable and the wire module unit and the first frame and the second frame between entering the photovoltaic inverter inside, thereby reaching the purpose of waterproof and dustproof.

[0014] According to some embodiments of the utility model, a sealing gasket is arranged between the sealing wire structure and the mainframe box, and the sealing gasket is arranged around the opening.

[0015] According to some embodiments of the utility model, the photovoltaic inverter is provided with a fan, an air inlet hole is arranged on the casing, and the air inlet hole is arranged corresponding to the fan.

[0016] According to some embodiments of the utility model, an installation position is arranged on the casing, and the fan is assembled in the installation position.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below in combination with the drawings and embodiments, wherein:

[0019] Figure 1 It is assembly schematic drawing of the sealing wire structure of an embodiment of the utility model on the photovoltaic inverter;

[0020] Figure 2 It is the enlarged schematic view of A in the middle; Figure 1

[0021] Figure 3 It is the three-dimensional exploded schematic view of the sealing wire structure of an embodiment of the utility model;

[0022] Figure 4 It is the exploded schematic view of the sealing wire structure of an embodiment of the utility model;

[0023] Figure 5 It is the three-dimensional schematic view of cable assembly of the wire module unit of the sealing wire structure of an embodiment of the utility model;

[0024] Figure 6 ​A three-dimensional schematic view of a threading module unit of the sealing threading structure of an embodiment of the utility model;

[0025] Figure 7 A three-dimensional schematic view of the photovoltaic inverter of an embodiment of the utility model;

[0026] Figure 8 A three-dimensional schematic view of the sealing threading structure of an embodiment of the utility model (the number of wire passing holes of each threading module unit is different);

[0027] Figure 9 A three-dimensional schematic view of the sealing threading structure of an embodiment of the utility model (the aperture of the wire passing hole of each threading module unit is different).

[0028] Reference signs:

[0029] Sealing threading structure 100, first frame 110, notch 111, upper end face 112, lower end face 113, assembly hole 114, connecting hole 115, threading module unit 120, wire passing hole 121, first slot 122, second slot 123, second frame 130, fastener 140;

[0030] Photovoltaic inverter 200, shell 210, air inlet hole 211, mainframe box 220, opening 221, mounting position 222, sealing gasket 230, avoiding hole 231;

[0031] Cable 300. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0033] In the description of the utility model, it should be understood that the orientation description, such as left, right and the like, is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the utility model.

[0034] In the description of the utility model, if the first and the second are described for the purpose of distinguishing technical features, they cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Reference Figure 3 、 Figure 4 The sealed threading structure 100 proposed in the embodiment of the present invention includes a first frame 110 , a threading module unit 120 and a second frame 130 .

[0037] Specifically, refer to Figure 3 Two notches 111 are provided on one side of the first frame 110. The two notches 111 are spaced apart along the length of the first frame 110 and extend along the thickness of the first frame 110 to the upper end surface 112 and the lower end surface 113 of the first frame 110. Both the first frame 110 and the second frame 130 are provided with mounting holes 114. The second frame 130 is fixed to one side of the first frame 110 by fasteners 140 inserted into the mounting holes 114, thereby forming spaces at the notches 111 to accommodate the threading modules 120. The two threading modules 120 are disposed in the spaces formed by the two notches 111, one for one. The threading modules 120 are made of an elastic material. The shape of the threading modules 120 matches that of the notches 111, and the size of the threading modules 120 is slightly larger than that of the notches 111. When the threading modules 120 are disposed in the notches 111, they are partially exposed outside the notches 111. The wire threading module unit 120 is provided with four wire threading holes 121 , and each wire threading hole 121 is used for passing a cable 300 .

[0038] When the sealing threading structure 100 is assembled, the cable 300 is inserted into the corresponding wire hole 121 of the threading module unit 120, and then the threading module unit 120 is extruded into the corresponding gap 111, at this time, the threading module unit 120 is partially exposed outside the gap 111, the second frame 130 is fixedly connected to the first frame 110 through the fastener 140, when the second frame 130 is fixedly connected to the first frame 110, the second frame 130 extrudes the threading module unit 120, so that the threading module unit 120 is elastically deformed, the elastically deformed threading module unit 120 fills the gap between the threading module unit 120 and the cable 300 and the gap between the threading module unit 120 and the first frame 110 and the second frame 130, thereby sealing the gap between the threading module unit 120 and the cable 300 and the gap between the threading module unit 120 and the first frame 110 and the second frame 130, so as to prevent moisture and dust from entering the inside of the photovoltaic inverter 200 from the gap between the threading module unit 120 and the cable 300 and the gap between the threading module unit 120 and the first frame 110 and the second frame 130, thereby achieving the purposes of waterproof and dustproof. Moreover, the utility model has the advantages of simple structure, few components, no need to tighten each cable 300 individually, and convenience for installation and maintenance of the cable 300.

[0039] It can be understood that the fastener 140 can adopt a screw or a bolt, and the assembly hole 114 of the first frame 110 adopts a threaded hole, or the fastener 140 adopts a structure matched with a bolt and a nut, which is not limited here.

[0040] It should be noted that the gap 111 on the first frame 110 can be provided with one, two or more, and correspondingly, the threading module unit 120 is correspondingly provided with one, two or more, which is not limited here. The size of the first frame 110 can be selected according to the number of the threading module unit 120, when the threading module unit 120 is provided with one, the length of the first frame 110 can be selected as a smaller size, and when the threading module unit 120 is provided with two or more, the length of the first frame 110 is correspondingly increased.

[0041] Similarly, the number of the wire hole 121 on the threading module unit 120 can be selected as a single hole, a double hole or more according to actual conditions.

[0042] Referring to Figure 5 , Figure 6In some embodiments, the threading module unit 120 is provided with a first slot 122 extending to the upper end surface 112 and the lower end surface 113 of the threading module unit 120 along the axial direction of the wire passing hole 121, and the first slot 122 penetrates through the side wall of the wire passing hole 121 and the side wall of the threading module unit 120. Since the threading module unit 120 is made of elastic material and has a certain elastic deformation amount, when the cable 300 needs to be assembled to the wire passing hole 121 of the threading module unit 120, only an external force is needed to make the threading module unit 120 elastically deformed, so that the cable 300 with the plug is clamped into the wire passing hole 121 along the first slot 122, that is, the assembly of the cable 300 on the threading module unit 120 can be realized. Then, the threading module unit 120 is assembled into the notch 111 of the first frame 110, and the second frame 130 and the first frame 110 are fixedly connected by the fastener 140, so that the assembly of the sealing threading structure 100 can be realized. On the contrary, when the cable 300 or the electrical appliance connected with the cable 300 such as the fan needs to be maintained, only the fastener 140 and the second frame 130 need to be removed, the threading module unit 120 is taken out, and the cable 300 is taken out along the first slot 122 by using an external force, so that the sealing threading structure 100 of the utility model is simple and convenient in installation and maintenance, and is suitable for being applied to the photovoltaic inverter 200 product.

[0043] It should be noted that in some embodiments, the wire passing hole 121 on the threading module unit 120 is not limited to one, and when the wire passing hole 121 is provided with two or more, the first slot 122 is correspondingly provided with two or more, and each first slot 122 is one-to-one corresponding to each wire passing hole 121, so as to facilitate the assembly of the cable 300.

[0044] Referring to Figure 5 , Figure 6 In some embodiments, the wire passing hole 121 is provided with four, and the four wire passing holes 121 are provided in two groups, and the threading module unit 120 is provided with two first slots 122 and two second slots 123, and each first slot 122 and each second slot 123 are one-to-one corresponding to the two groups of wire passing holes 121.

[0045] Referring to Figure 5 , Figure 6The first slot 122 is arranged in the threading module unit 120, and extends to the upper end face 112 and the lower end face 113 of the threading module unit 120 along the axial direction of the wire hole 121, and the first slot 122 penetrates the side wall of one wire hole 121 and the side wall of the threading module unit 120, so that the cable 300 can be clamped into the wire hole 121 along the first slot 122; the second slot 123 is arranged in the threading module unit 120, and extends to the upper end face 112 and the lower end face 113 of the threading module unit 120 along the axial direction of the wire hole 121, and the second slot 123 penetrates the side walls of two wire holes 121, and the second slot 123 communicates the two wire holes 121, so that the cable 300 can be clamped into the corresponding wire hole 121 away from the first slot 122 along the first slot 122 and the second slot 123.

[0046] When a plurality of cables 300 need to be assembled into the corresponding wire holes 121 of the threading module unit 120, only the elastic deformation of the threading module unit 120 is caused by external force, so that the first cable 300 with a plug is slid into the first wire hole 121 of the group along the first slot 122, and then the cable 300 is clamped into the second wire hole 121 of the group along the second slot 123, and then the second cable 300 with a plug is clamped into the first wire hole 121 of the group along the first slot 122, so that the assembly of the cable 300 in the first group of wire holes 121 of the threading module unit 120 is realized; similarly, the third and fourth cables 300 are sequentially clamped into the second group of wire holes 121 in the above-mentioned manner, and then the threading module unit 120 is assembled into the notch 111 of the first frame 110, and the second frame 130 and the first frame 110 are fixedly connected by the fastener 140, so that the assembly of the sealing threading structure 100 is realized; on the contrary, when the cable 300 or the electrical appliance connected with the cable 300 such as a fan needs to be maintained, only the fastener 140 and the second frame 130 are removed, the threading module unit 120 is taken out, and the cable 300 is taken out along the first slot 122 and the second slot 123 by external force, so that the sealing threading structure 100 is simple and convenient in installation and maintenance.

[0047] It can be understood that in some embodiments, the wire hole 121 is provided with four, the first slot 122 is provided with one, and the second slot 123 is provided with three, and each second slot 123 sequentially communicates two wire holes 121, so that the four wire holes 121 are sequentially communicated, and the threading module unit 120 adopting the structure can also achieve the purpose of simple and convenient installation and maintenance of the cable 300.

[0048] It should be noted that when the first slot 122 and the second slot 123 are provided on the threading module unit 120 simultaneously, the number of the wire passing holes 121 on the threading module unit 120 can be two, three or more, and the specific number of the first slot 122 and the second slot 123 can be set according to actual conditions, which will not be described in detail here.

[0049] In some embodiments, at least two threading module units 120 are provided, and the number of the wire passing holes on each threading module unit 120 is different to meet the needs of different use occasions. As shown in Figure 9 , in this specific embodiment, three threading module units 120 are provided, one of which is provided with one wire passing hole 121, another is provided with two wire passing holes 121, and the third is provided with four wire passing holes 121. The sealing threading structure 100 adopting this structure can meet the threading of seven cables 300.

[0050] Referring to Figure 8 , in some embodiments, two threading module units 120 are provided, and the hole diameters of the wire passing holes on the two threading module units 120 are different. The wire passing holes 121 with different hole diameters are suitable for cables 300 with corresponding diameters, thereby meeting the needs of threading cables 300 with different diameters and further ensuring the waterproof and dustproof requirements of the sealing threading structure 100.

[0051] It can be understood that the threading module unit 120 can be provided with three or more, and the hole diameters of the wire passing holes 121 on different threading module units 120 can all be different to meet the needs of threading cables 300 with different diameters and further ensure the waterproof and dustproof requirements of the sealing threading structure 100.

[0052] It can be understood that in some embodiments, each threading module unit is provided with two or more wire passing holes, and the hole diameters of the wire passing holes are at least two different, or the hole diameters of each wire passing hole are all different.

[0053] Referring to Figure 3 , Figure 4 , Figure 8 , Figure 9 In some embodiments, the first frame 110 is provided with a connecting hole 115, and the connecting hole 115 is used for threading a fastener 140. The fastener 140 threaded in the connecting hole 115 can be used to assemble the sealing threading structure 100 to the photovoltaic inverter 200.

[0054] Referring to Figure 1The utility model discloses photovoltaic inverter 200, including casing 210 and the sealing wire structure 100 of any above described, be equipped with mainframe box 220 in casing 210, be equipped with opening 221 on mainframe box 220, the sealing wire structure 100 is located in mainframe box 220, and opening 221 is used for the cable 300 of wire module unit 120 and is inserted.

[0055] The sealing wire structure 100 is adopted in the photovoltaic inverter 200, water and dust can be avoided from entering the inside of the photovoltaic inverter 200 between the wire module unit 120 and the cable 300 and between the wire module unit 120 and the first frame 110 and the second frame 130, so that the purposes of waterproof and dustproof are achieved.

[0056] Referring to Figure 2 In some embodiments, the sealing wire structure 100 and the mainframe box 220 are provided with a sealing gasket 230, and the sealing gasket 230 is arranged at the periphery of the opening 221. The sealing gasket 230 is provided with a relief hole 231, the size of the relief hole 231 is greater than the overall size of the wire module unit 120 on the sealing wire structure 100, the sealing gasket 230 is formed by an elastic material, and the sealing gasket 230 is arranged between the sealing wire structure 100 and the inverter shell. When the sealing wire structure 100 is assembled to the mainframe box 220 by using the fastener 140 such as a screw or a bolt, the sealing gasket 230 is elastically deformed by being extruded by the sealing wire structure 100, so that the gap between the sealing wire structure 100 and the mainframe box 220 of the inverter disappears, and the purposes of waterproof and dustproof are achieved.

[0057] Referring to Figure 7 In some embodiments, the photovoltaic inverter 200 is provided with a fan, and the casing 210 is provided with an air inlet hole 211 corresponding to the fan, so that the fan is used to dissipate heat of the photovoltaic inverter 200.

[0058] In some embodiments, the casing 210 is provided with a mounting position 222, and the fan is assembled to the mounting position 222. The mounting position 222 can be a mounting bracket connected to the casing 210, a groove arranged on the casing 210, or the like, which is not limited here.

[0059] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, and as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the description.

[0060] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.

Claims

1. A sealed threading structure for a photovoltaic inverter, characterized by, include: a first frame, wherein at least one notch is provided on one side of the first frame, and the notch extends to the upper end surface and the lower end surface of the first frame; At least one threading module unit is provided in one-to-one correspondence with the notch, the threading module unit is made of elastic material, and the threading module unit is provided with at least one wire hole for passing the cable; The second frame is used to be fixedly arranged on one side of the first frame. When the second frame is fixedly connected to the first frame, the threading module unit can be elastically deformed to eliminate the gap between the threading module unit and the cable and between the threading module unit and the first frame and the second frame.

2. The sealed wire-penetration structure of claim 1, wherein The threading module unit is provided with a first slot, and along the axial direction of the wire hole, the first slot extends to the upper end surface and the lower end surface of the threading module unit, and the first slot passes through the side wall of the wire hole and the side wall of the threading module unit, so that the cable can be inserted into the wire hole along the first slot.

3. The sealed wire-penetration structure of claim 1, wherein There are at least two wire passing holes, and the wire threading module unit is provided with a first slot and a second slot. Along the axial direction of the wire passing hole, the first slot extends to the upper end face and the lower end face of the wire threading module unit, and the first slot passes through the side wall of one of the wire passing holes and the side wall of the wire threading module unit, so that the cable can be inserted into the wire passing hole along the first slot; the second slot is provided in the wire threading module unit, and along the axial direction of the wire passing hole, the second slot extends to the upper end face and the lower end face of the wire threading module unit, and the second slot passes through the side wall of the wire passing hole to connect the wire passing holes in sequence, so that the cable can be inserted into the corresponding wire passing hole away from the first slot along the first slot and the second slot.

4. The sealed wire-penetration structure of claim 1, wherein At least two threading module units are provided, and the numbers of the threading holes on at least two threading module units are different.

5. The sealed wire-penetration structure of claim 1, wherein There are at least two threading module units, and the diameters of the threading holes on at least two threading module units are different; or, the threading module unit is provided with at least two threading holes, and the diameters of the threading holes are different.

6. The sealed wire-penetration structure of claim 1, wherein The first frame is provided with a connecting hole for a fastener to pass through.

7. A photovoltaic inverter, characterized by include: A housing, wherein a main box is provided in the housing and an opening is provided on the main box; as well as The sealed wire threading structure according to any one of claims 1 to 6, wherein the sealed wire threading structure is arranged in the main chassis, and the opening is used for the cable arranged in the wire threading module unit to pass through.

8. The photovoltaic inverter of claim 7, wherein, A sealing gasket is provided between the sealing threading structure and the main chassis, and the sealing gasket is provided around the opening.

9. The photovoltaic inverter of claim 7, wherein, The photovoltaic inverter is provided with a fan, and the housing is provided with an air inlet hole, which is arranged corresponding to the fan.

10. The photovoltaic inverter of claim 9, wherein, The housing is provided with a mounting position, and the fan is assembled at the mounting position.

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