Shell with injection molding terminal and inverter

Abstract

The utility model discloses a housing (100) with an injection molding terminal, and the housing (100) with the injection molding terminal comprises the injection molding terminal (10), the injection molding terminal (10) is provided with a sealing convex part (11) and a substrate (12), the sealing convex part (11) is arranged on the substrate (12), and the sealing convex part (11) protrudes towards a direction close to an inverter; the injection molding terminal (10) comprises a substrate (12) and a shell (20), the side wall of the shell (20) is provided with a sealing groove (21) matched with the sealing convex part (11), the sealing convex part (11) is arranged in the sealing groove (21), the injection molding terminal (10) is further provided with a through hole penetrating through the sealing convex part (11) and the substrate (12), and the cable extends out of the interior of the inverter through the through hole; the fixing piece (30) is connected to the injection molding terminal (10) and the shell (20), and the injection molding terminal (10) is fixed to the shell (20) through the fixing piece (30). According to the technical scheme of the utility model, the injection molding terminals are fixed on the shell and are tightly connected, so that the processing precision and assembly requirements of parts in the production process are reduced.

Description

Technical Field

[0001] This utility model relates to the field of inverters, and in particular to a housing with injection-molded terminals. Background Technology

[0002] Currently, most microinverters on the market suffer from several design and manufacturing shortcomings. For example, most existing microinverters employ a manufacturing process where the entire internal cavity is filled with potting compound to achieve waterproofing, dustproofing, and electrical insulation. While this process can improve inverter reliability to some extent, it demands extremely high precision during manufacturing. To ensure the potting compound doesn't overflow and to guarantee a good seal, strict control must be exercised over the dimensional and assembly accuracy of each component. This not only increases production and labor costs but also complicates the manufacturing process, hindering production.

[0003] Furthermore, the large amount of potting compound used limits the product's heat dissipation performance, as it hinders the effective dissipation of heat inside the equipment, potentially shortening the inverter's lifespan. Therefore, this design also hinders later maintenance or upgrades, further increasing operating costs. Utility Model Content

[0004] The main purpose of this utility model is to propose a housing with injection-molded terminals, which aims to solve the problems mentioned above, such as high requirements for dimensional and assembly accuracy of various components and high manufacturing costs in the existing inverter production process.

[0005] To achieve the above objectives, the present invention proposes a housing with injection-molded terminals, wherein the housing with injection-molded terminals comprises:

[0006] The injection-molded terminal has a sealing protrusion and a substrate, the sealing protrusion being disposed on the substrate and protruding toward the inverter;

[0007] The housing has a sealing groove on its side wall that is adapted to the sealing protrusion. The sealing protrusion is located in the sealing groove. The injection-molded terminal also has a through hole that penetrates the sealing protrusion and the substrate. The cable extends out of the inverter through the through hole.

[0008] A fastener is connected to the injection-molded terminal and the housing, thereby fixing the injection-molded terminal to the housing.

[0009] Optionally, the sealing groove has two long sidewalls arranged opposite each other and two short sidewalls arranged opposite each other, the two long sidewalls and the two short sidewalls surrounding the sealing groove.

[0010] Optionally, the housing with injection-molded terminals further includes a sealing ring, the sealing ring having a sealing hole in the center, the sealing hole being fitted around the sealing protrusion.

[0011] Optionally, a groove is provided around the connection between the sealing protrusion and the substrate. The width of the groove is adapted to the thickness of the sealing ring. The sealing ring is fitted into the groove and connected to the periphery of the sealing protrusion through the sealing hole.

[0012] Optionally, the sealing protrusion has a receiving groove on the side facing the housing, and the receiving groove communicates with the through hole.

[0013] Optionally, the substrate is provided with a first screw hole, and the housing is provided with a second screw hole, with the first screw hole and the second screw hole being correspondingly arranged; the fastener includes a screw, which passes through the first screw hole and connects to the second screw hole.

[0014] Optionally, the housing further includes a shielding plate disposed on one side of the second screw hole, the shielding plate protruding away from the second screw hole, the shielding plate serving to prevent the second screw hole from communicating with the inner cavity of the housing.

[0015] Optionally, there are multiple first screw holes, with at least two first screw holes respectively disposed at both ends of the substrate; there are multiple second screw holes, with at least two second screw holes respectively disposed on both sides of the sealing groove; there are multiple screws, with at least two screws used to pass through two first screw holes and be fixedly connected to two second screw holes respectively.

[0016] Optionally, the injection-molded terminal further includes a positioning post, which is disposed on the substrate. The positioning post is disposed corresponding to and communicates with the through hole. The positioning post extends in a direction away from the substrate. The positioning post and the sealing protrusion are respectively disposed on both sides of the substrate.

[0017] Optionally, two sealing grooves are provided, and the two sealing grooves are respectively provided on the two side walls of the housing. Two injection terminals and two fixing members are provided. The two injection terminals are respectively connected to the two sealing grooves, and the two fixing members respectively fix the two injection terminals to the two side walls of the housing.

[0018] This utility model also proposes an inverter, which includes the aforementioned housing with injection-molded terminals; and a current conversion device disposed inside the housing of the housing with injection-molded terminals.

[0019] This utility model's technical solution uses fasteners to fix the injection-molded terminals to the housing during production and assembly, ensuring a stable connection between the injection-molded terminals and the housing, reducing assembly difficulty. The sealing protrusion is installed in the sealing groove to achieve a sealed connection between the injection-molded terminals and the housing, effectively preventing water, dust, and impurities from entering the equipment, providing good sealing performance, reducing the machining precision required for parts during production, and making equipment maintenance and component replacement more convenient.

[0020] Furthermore, by using this housing with injection-molded terminals, the inverter achieves waterproof and dustproof protection, reduces production costs, and the portable replacement method increases the service life of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a partial structural schematic diagram of the housing 100 with injection-molded terminals of this utility model;

[0023] Figure 2 This is another partial structural schematic diagram of the housing 100 with injection-molded terminals of this utility model;

[0024] Figure 3 This is an exploded view of the structure of the housing 100 with injection-molded terminals of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the shell 20 in this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the injection-molded terminal 10 in this utility model;

[0027] Figure 6 for Figure 5 A cross-sectional schematic diagram;

[0028] Figure 7 This is a schematic diagram of the structure of the injection-molded terminal 10 and the sealing ring 40 of this utility model being interconnected;

[0029] Figure 8 This is a schematic diagram of another embodiment of the housing 100 with injection-molded terminals of the present invention.

[0030] Explanation of icon numbers:

[0031]

[0032] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] This utility model proposes a housing 100 with injection-molded terminals.

[0037] In the embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the housing 100 with injection-molded terminals includes injection-molded terminals 10, housing 20, and fixing members 30. The injection-molded terminals 10 have a sealing protrusion 11 and a base plate 12. The sealing protrusion 11 is disposed on the base plate 12 and protrudes towards the inverter. The side wall of the housing 20 is provided with a sealing groove 21 adapted to the sealing protrusion 11. Both are rectangular parallelepiped structures. The sealing protrusion 11 is disposed in the sealing groove 21. The injection-molded terminals 10 are also provided with a through hole that penetrates the sealing protrusion 11 and the base plate 12. The through hole communicates with the inner cavity of the inverter. The cables inside the inverter extend out of the inverter through the through hole. The fixing members are connected to the injection-molded terminals 10 and the housing 20 to fix the injection-molded terminals 10 to the housing 20, thereby sealing the housing 20.

[0038] Optionally, the sealing protrusion 11 is integrally formed with the substrate to ensure the sealing of the connection.

[0039] Optionally, one or more through holes can be provided as needed, such as 1, 2 or 4. If multiple through holes are provided, they are evenly distributed on the sealing protrusion 11. Their shape is preferably circular, and their diameter can be set according to the diameter of the wire or wire harness.

[0040] During production and assembly, the injection-molded terminal 10 is fixed to the housing 20 by the fastener 30, ensuring a stable connection between the injection-molded terminal 10 and the housing 20, reducing assembly difficulty. The sealing protrusion 11 is installed in the sealing groove 21 to achieve a sealed connection between the injection-molded terminal 10 and the housing 20, effectively preventing water, dust, and impurities from entering the equipment, providing good sealing performance, reducing the machining precision required for parts during production, and making equipment maintenance and component replacement more convenient. By using this housing 100 with injection-molded terminals, the inverter achieves waterproof and dustproof protection, reduces production costs, and the portable replacement method further increases the service life of the equipment.

[0041] The fixing member 30 fixes the injection-molded terminal 10 to the housing 20 by means of screws.

[0042] In other embodiments, the fixing method of the fastener 30 can also be a snap-fit ​​connection, sealing strip bonding, etc., which can achieve the method of fixing the injection-molded terminal 10 to the housing 20.

[0043] In one embodiment, reference Figure 3 The substrate 12 is provided with a first screw hole 121, and the housing 20 is provided with a second screw hole 122. The first screw hole 121 and the second screw hole 122 are provided correspondingly. The fastener includes a screw 31, which passes through the first screw hole 121 and connects to the second screw hole 122. In this way, the assembly process can be simple and easy to operate, and the labor cost can be reduced.

[0044] Furthermore, there are multiple first screw holes 121, with at least two first screw holes 121 respectively located at both ends of the substrate 12; there are multiple second screw holes 122, with at least two second screw holes 122 respectively located on both sides of the sealing groove 21; there are multiple screws 31, with at least two screws 31 used to pass through two first screw holes 121 and fix to two second screw holes 122 respectively, so as to achieve the balance of the connection after the injection-molded terminal 10 is fixed to the housing 20.

[0045] Preferably, refer to Figure 4The housing 20 also includes a shielding plate 22. The shielding plate 22 can be integrally set on the housing 20 with the sealing groove 21 and have a certain thickness. Alternatively, it can be set as one of the layers of the double-layer structure of the housing 20. The shielding plate 22 is located on one side of the second screw hole 122. The shielding plate 22 protrudes in a direction away from the second screw hole 122. The shielding plate 22 is used to separate the second screw hole 122 from the interior of the housing 20 and prevent the second screw hole 122 from communicating with the inner cavity of the housing 20.

[0046] In one embodiment, the sealing groove 21 has two long sidewalls and two short sidewalls arranged opposite to each other. The two long sidewalls and the two short sidewalls surround the sealing groove 21. Compared with the traditional U-shaped groove design, which requires the top cover to press and seal the injection-molded terminal, the sealing groove 21 is surrounded on all four sides, and the sealing performance is better.

[0047] In one embodiment, the housing 100 with injection-molded terminals further includes a sealing ring 40. The sealing ring 40 is structurally adapted to the substrate 12. The sealing ring 40 has a sealing hole 41 in the middle. The sealing hole 41 is sleeved around the sealing protrusion 11. Preferably, the sealing ring 40 is made of high-elasticity silicone or high-temperature resistant rubber, etc., to seal the sealing hole 41 and at the same time prevent dust and water.

[0048] Preferably, refer to Figure 5 and Figure 6 A groove 111 can be provided around the connection between the sealing protrusion 11 and the substrate 12. The width of the groove 111 is adapted to the thickness of the sealing ring 40. The sealing ring 40 is sleeved in the groove 111 through the sealing hole 41 and connected to the periphery of the sealing protrusion 11 to further increase the connection between the sealing ring 40 and the sealing protrusion 11, and at the same time prevent the sealing ring 40 from shifting.

[0049] In one embodiment, reference Figure 7 The sealing protrusion 11 has a receiving groove 112 on the side facing the housing 20. The receiving groove 112 is connected to the through hole. The cable is placed in the receiving groove 112 and passes through the through hole to form an integral structure with the injection-molded terminal 10.

[0050] Optionally, the injection-molded terminal 10 also includes a positioning post 13. The positioning post is disposed on the substrate 12 and integrally disposed with the substrate 12. The positioning post 13 is disposed corresponding to the through hole and communicates with the through hole. The positioning post 13 extends in a direction away from the substrate 12. The positioning post and the sealing protrusion 11 are respectively disposed on both sides of the substrate 12. The wire extends out from the positioning post, and the positioning post 13 guides and positions the wire.

[0051] In one embodiment, reference Figure 8There are two sealing grooves 21, which are respectively provided on the two side walls of the housing 20. There are two injection-molded terminals 10 and two fixing members. The two injection-molded terminals 10 are respectively connected to the two sealing grooves 21, and the two fixing members fix the two injection-molded terminals 10 to the two side walls of the housing 20. The wire passes through the inside of the inverter through the sealing grooves 21 on both sides.

[0052] This utility model also proposes an inverter, which includes a housing 100 with injection-molded terminals; and a current conversion device, which is disposed inside the housing 20 of the housing 100 with injection-molded terminals, to convert direct current into alternating current. The housing 100 with injection-molded terminals can realize all the aforementioned embodiments, so they will not be described in detail.

[0053] By using this housing 100 with injection-molded terminals, the inverter achieves internal waterproofing and dustproofing, reducing production costs.

[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A housing (100) having injection-molded terminals, characterized in that, The housing (100) with injection-molded terminals includes: Injection-molded terminal (10), the injection-molded terminal (10) having a sealing protrusion (11) and a substrate (12), the sealing protrusion (11) being disposed on the substrate (12), the sealing protrusion (11) protruding toward the inverter; The housing (20) has a sealing groove (21) on its side wall that is adapted to the sealing protrusion (11). The sealing protrusion (11) is located in the sealing groove (21). The injection-molded terminal (10) also has a through hole that passes through the sealing protrusion (11) and the substrate (12). The cable extends out of the inverter through the through hole. A fastener (30) is connected to the injection terminal (10) and the housing (20) to fix the injection terminal (10) to the housing (20).

2. The housing (100) with injection-molded terminals as described in claim 1, characterized in that, The sealing groove (21) has two long sidewalls arranged opposite to each other and two short sidewalls arranged opposite to each other, and the two long sidewalls and the two short sidewalls surround the perimeter of the sealing groove (21).

3. The housing (100) with injection-molded terminals as described in claim 1, characterized in that, The housing (100) with injection-molded terminals also includes a sealing ring (40), which has a sealing hole (41) in the middle, and the sealing hole (41) is fitted around the sealing protrusion (11).

4. The housing (100) with injection-molded terminals as described in claim 3, characterized in that, The sealing protrusion (11) and the substrate (12) are connected by a groove (111) around the perimeter. The width of the groove (111) is adapted to the thickness of the sealing ring (40). The sealing ring (40) is fitted into the groove (111) through the sealing hole (41) and connected to the perimeter of the sealing protrusion (11).

5. The housing (100) with injection-molded terminals as described in claim 1, characterized in that, The sealing protrusion (11) has a receiving groove (112) on the side facing the housing (20), and the receiving groove (112) is connected to the through hole.

6. The housing (100) with injection-molded terminals as described in claim 1, characterized in that, The substrate (12) is provided with a first screw hole (121), and the housing (20) is provided with a second screw hole (122), with the first screw hole (121) and the second screw hole (122) being provided correspondingly; The fastener includes a screw (31) that passes through the first screw hole (121) and connects to the second screw hole (122).

7. The housing (100) with injection-molded terminals as described in claim 6, characterized in that, The housing (20) further includes: A shielding plate (22) is provided on one side of the second screw hole (122). The shielding plate (22) protrudes in a direction away from the second screw hole (122). The shielding plate (22) is used to prevent the second screw hole (122) from communicating with the inner cavity of the housing (20).

8. The housing (100) with injection-molded terminals as described in claim 6, characterized in that, The first screw hole (121) is provided in multiple ways, and at least two first screw holes (121) are respectively provided at both ends of the substrate (12). The second screw hole (122) is provided in multiple ways, and at least two second screw holes (122) are respectively provided on both sides of the sealing groove (21). The screws (31) are multiple, and at least two of the screws (31) are used to be fixedly connected to the two second screw holes (122) respectively by passing through the two first screw holes (121).

9. The housing (100) with injection-molded terminals as described in claim 1, characterized in that, Two sealing grooves (21) are provided, and the two sealing grooves (21) are respectively provided on the two side walls of the housing (20). Two injection terminals (10) and two fixing members (30) are provided. The two injection terminals (10) are respectively connected to the two sealing grooves (21), and the two fixing members (30) respectively fix the two injection terminals (10) to the two side walls of the housing (20).

10. An inverter, characterized in that, The inverter includes: The housing (100) with injection-molded terminals as described in any one of claims 1 to 9; and A current conversion device is disposed within the housing (20) of the housing (100) having injection-molded terminals.

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