A range hood power supply box

Abstract

This utility model discloses a range hood power supply box, including a box body and a detachable cover mounted on top of the box body. A power circuit board is housed inside the box body, and an inlet hole is provided in the center of the cover. The power cord of the power circuit board passes through the inlet hole from top to bottom, and a rubber sealing ring is provided at the connection point between the power cord and the inlet hole to prevent oil fumes from entering the box body from the power cord connection. The power circuit board inside the box body is misaligned with the inlet hole. This utility model has a reasonable structural design, effectively preventing oil fumes from entering the box body through the gap between the power cord and the inlet hole and affecting the power circuit board. It effectively prevents oil fumes from seeping into the range hood power supply box, avoiding circuit board oxidation, and improving the reliability, safety, and service life of the range hood power supply box. The misalignment of the power circuit board with the inlet hole also prevents direct contact between oil fumes and the power circuit board even if a small amount of oil fumes enters, improving the reliability of the power circuit board.

Description

Technical Field

[0001] This utility model belongs to the field of power supply box technology, and specifically relates to a power supply box for a range hood. Background Technology

[0002] Currently, most range hood power boxes on the market have their power cords inserted from the middle of the box. While this may meet general usage needs, during daily use, kitchen fumes inevitably accumulate on the surface and surrounding areas of the power box. The middle-entry design allows fumes to easily seep into the box through the gaps, causing the internal circuit board to be constantly exposed to grease. Over time, this can lead to oxidation of the circuit board, affecting the normal operation of the power box and potentially causing short circuits and other safety hazards. This reduces the lifespan and safety of the power box, increases maintenance costs and user risks, and limits its applicability. Summary of the Invention

[0003] The purpose of this utility model is to provide a range hood power supply box, which aims to effectively prevent oil fumes from seeping into the inside of the power supply box and avoid circuit board oxidation by improving the inlet structure, thereby improving the reliability, safety and service life of the range hood power supply box.

[0004] The technical solution to achieve the purpose of this utility model is a range hood power box, including a box body and a detachable cover on the top of the box body. A power circuit board is provided in the box body, and an inlet hole is provided in the middle of the cover. The power cord of the power circuit board passes through the inlet hole from top to bottom, and a rubber sealing ring is provided at the connection between the power cord and the inlet hole to prevent oil fumes from entering the box body from the connection of the power cord.

[0005] The power circuit board inside the box is misaligned with the inlet hole.

[0006] A further preferred embodiment is that the bottom surface of the cover has a protective cover with a top opening fixed by screws, and the side wall of the protective cover is provided with a U-shaped groove.

[0007] The protective cover is located directly below the inlet hole. The power cord passes through the inlet hole, bends, and enters the box body through the U-shaped cable channel of the protective cover.

[0008] A further preferred embodiment is that a mounting groove is provided at the inner edge of the top surface of the box body;

[0009] The bottom inner edge of the cover has an integrally formed mounting protrusion;

[0010] The cover is combined with the box body, and the mounting protrusion is engaged in the mounting groove.

[0011] A further preferred embodiment is that the connection between the mounting protrusion and the mounting groove is filled with a potting sealant layer.

[0012] A further preferred embodiment is that a sealing gasket is fixed at the connection between the protective cover and the face cover.

[0013] A further preferred embodiment is that: a buckle hole is provided on the upper part of one side wall of the box body, and a buckle protrusion is integrally formed on the edge of the cover;

[0014] The buckle protrusion of the cover engages and is limited within the buckle hole.

[0015] A further preferred embodiment is that the housing is integrally formed with a mounting bracket for fixing the power circuit board and a wiring terminal for connecting to the power circuit board.

[0016] A further preferred embodiment is that the box body and the cover are combined to form a cuboid box.

[0017] A further preferred embodiment is that both the box body and the cover are plastic structures.

[0018] A further preferred embodiment is that the inner diameter of the inlet hole matches the diameter of the power cord.

[0019] This utility model has positive effects: Its structure is reasonably designed, with a rubber sealing ring at the connection between the power cord and the inlet hole to prevent oil fumes from entering the box body through the power cord connection. Furthermore, the power circuit board inside the box is offset from the inlet hole, effectively preventing oil fumes from entering the box body through the gap between the power cord and the inlet hole and affecting the power circuit board. This effectively prevents oil fumes from seeping into the range hood power box, avoiding circuit board oxidation, thereby improving the reliability, safety, and service life of the range hood power box. Moreover, the offset design between the power circuit board and the inlet hole prevents direct contact between the oil fumes and the power circuit board even if a small amount of oil fumes enters, improving the reliability of the power circuit board and making it highly adaptable. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 for Figure 2 Another perspective on the structure diagram;

[0024] Figure 4This is a schematic diagram of the protective cover in this utility model.

[0025] Reference numerals: 1. Box body; 2. Face cover; 3. Cable inlet hole; 4. Protective cover; 5. U-shaped cable groove; 6. Mounting groove; 7. Mounting protrusion; 8. Snap-on hole; 9. Snap-on protrusion; 10. Rubber sealing ring. Detailed Implementation

[0026] 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. Example

[0027] See Figures 1 to 4 As shown, a range hood power supply box includes a box body 1 and a detachable cover 2 disposed on top of the box body. Both the box body and the cover are plastic structures. The box body and cover, when combined, form a cuboid box. This structure facilitates installation and use.

[0028] The box contains a power circuit board, and the center of the cover has an inlet hole 3. The power cord of the power circuit board passes through the inlet hole from top to bottom, and a rubber sealing ring 10 is provided at the connection between the power cord and the inlet hole to prevent oil fumes from entering the box from the connection point. The power circuit board inside the box is offset from the inlet hole. In this embodiment, the inner diameter of the inlet hole matches the diameter of the power cord. The power circuit board is a conventional structure in the prior art, and is simply applied, so it is not described in detail. The rubber sealing ring ensures that the inlet hole and the power cord fit tightly, preventing oil fumes from entering the box from the connection point, thus improving the oil fume sealing performance. Furthermore, the offset between the power circuit board and the inlet hole ensures that even if a small amount of oil fumes enters the box, it will not directly contact the power circuit board, ensuring the normal operation of the power circuit board and making it highly applicable.

[0029] Furthermore, in this embodiment, the bottom surface of the face cover is fixed with a protective cover 4 having a top opening by screws, and a U-shaped cable groove 5 is provided on the side wall of the protective cover. During installation, the protective cover is positioned directly below the cable inlet hole, and the power cable passes through the cable inlet hole, bends, and enters the box body through the U-shaped cable groove of the protective cover. A sealing gasket is fixed at the connection between the protective cover and the face cover. With the above structure, the power cable bends after passing through the face cover and enters the box body through the U-shaped cable groove. Even if a small amount of oil fumes enters, it will remain inside the protective cover and will not enter the box body along the power cable, affecting the normal operation of the power circuit board.

[0030] In this embodiment, a mounting groove 6 is provided at the inner edge of the top surface of the box body; a mounting protrusion 7 is integrally formed at the inner edge of the bottom surface of the cover; the cover is combined with the box body, and the mounting protrusion is engaged in the mounting groove. Furthermore, the connection between the mounting protrusion and the mounting groove is filled with a potting compound sealing layer. This structure improves the sealing performance between the box body and the cover, preventing oil fumes from entering through the connection, ensuring the internal sealing performance of the box body, guaranteeing the normal operation of the power circuit board, and offering strong applicability.

[0031] Furthermore, in this embodiment, a snap-fit ​​hole 8 is provided on the upper part of one side wall of the box body, and a snap-fit ​​protrusion 9 is integrally formed on the edge of the cover; during installation, the snap-fit ​​protrusion of the cover engages with the snap-fit ​​hole for restraint. This structure ensures the stable connection between the box body and the cover, preventing loosening or detachment.

[0032] In this embodiment, in order to improve the installation stability of the power circuit board, the housing is integrally formed with a mounting bracket for fixing the power circuit board and a wiring terminal connected to the power circuit board.

[0033] This utility model has positive effects: Its structure is reasonably designed, with a rubber sealing ring at the connection between the power cord and the inlet hole to prevent oil fumes from entering the box body through the power cord connection. Furthermore, the power circuit board inside the box is offset from the inlet hole, effectively preventing oil fumes from entering the box body through the gap between the power cord and the inlet hole and affecting the power circuit board. This effectively prevents oil fumes from seeping into the range hood power box, avoiding circuit board oxidation, thereby improving the reliability, safety, and service life of the range hood power box. Moreover, the offset design between the power circuit board and the inlet hole prevents direct contact between the oil fumes and the power circuit board even if a small amount of oil fumes enters, improving the reliability of the power circuit board and making it highly adaptable.

[0034] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A range hood power supply box, comprising a box body and a detachable cover disposed on the top of the box body, wherein a power circuit board is disposed inside the box body, characterized in that: The cover has a cable inlet hole in the middle. The power cord of the power circuit board passes through the cable inlet hole from top to bottom. A rubber sealing ring is provided at the connection between the power cord and the cable inlet hole to prevent oil fumes from entering the box from the connection of the power cord. The power circuit board inside the box is misaligned with the inlet hole.

2. The power supply box for a range hood according to claim 1, characterized in that: The bottom surface of the cover is fixed with a protective cover with a top opening by screws, and a U-shaped groove is provided on the side wall of the protective cover. The protective cover is located directly below the inlet hole. The power cord passes through the inlet hole, bends, and enters the box body through the U-shaped cable channel of the protective cover.

3. The power supply box for a range hood according to claim 1, characterized in that: An installation groove is provided at the inner edge of the top surface of the box body; The bottom inner edge of the cover has an integrally formed mounting protrusion; The cover is combined with the box body, and the mounting protrusion is engaged in the mounting groove.

4. A power supply box for a range hood according to claim 3, characterized in that: The connection between the mounting protrusion and the mounting groove is filled with a potting sealant layer.

5. A power supply box for a range hood according to claim 2, characterized in that: A sealing gasket is fixed at the connection between the protective cover and the face cover.

6. A power supply box for a range hood according to claim 3, characterized in that: The upper part of one side wall of the box body is provided with a buckle hole, and the edge of the cover is integrally formed with a buckle protrusion; The buckle protrusion of the cover engages and is limited within the buckle hole.

7. A power supply box for a range hood according to claim 1, characterized in that: The box body is integrally formed with a mounting bracket for fixing the power circuit board and a wiring terminal for connecting to the power circuit board.

8. A power supply box for a range hood according to claim 1, characterized in that: The box body and the cover are combined to form a cuboid box.

9. A power supply box for a range hood according to claim 1, characterized in that: Both the box body and the cover are made of plastic.

10. A power supply box for a range hood according to claim 1, characterized in that: The inner diameter of the inlet hole matches the diameter of the power cord.

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