Top-mounted waterproof and lampblack-proof power supply box for range hood

Abstract

The waterproof and lampblack-proof power supply box comprises a power supply box body installed on the surface of the top of the range hood, and the power supply box body comprises a shell, a circuit board arranged in the shell and a sealing cover plate installed at the bottom of the shell; the two sides of the bottom of the circuit board are respectively provided with an electronic component and a wiring part, one side of the sealing cover plate is provided with a vertically upward partition plate, and the partition plate separates the electronic component from the wiring part, so that the electronic component is located in a sealed space formed by the shell and the sealing cover plate, and the wiring part is located outside the sealed space. The utility model provides the water-proof and oil-smoke-proof power supply box arranged on the range hood, which is water-proof and oil-smoke-proof.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and more specifically, to an upper-mounted waterproof and oil-proof power box for a range hood. Background Art

[0002] The power box is a key component of a range hood, and various electronic components such as a circuit board and a capacitor are installed in the power box. At present, the upper-mounted power box of the range hoods on the market is generally installed on the surface of the casing, and the electronic components on the circuit board are not effectively sealed. After long-term use, oil fumes and water vapor enter the power box, and the electronic components on the circuit board inside the box will be contaminated and corroded by the oil fumes and water vapor and damaged, resulting in the failure of the functions of the range hood and the inability to use it normally. Content of the Utility Model

[0003] In order to overcome the above-mentioned drawbacks of the prior art, the utility model provides an upper-mounted waterproof and oil-proof power box for a range hood that can prevent water and oil fumes.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an upper-mounted waterproof and oil-proof power box for a range hood, including a power box installed on the top surface of the range hood. The power box includes a housing, a circuit board provided inside the housing, and a sealing cover plate installed at the bottom of the housing. Electronic components and a wiring part are respectively provided on both sides of the bottom of the circuit board. A partition plate perpendicular to the upward direction is provided on one side of the sealing cover plate. The partition plate separates the electronic components and the wiring part, so that the electronic components are located in the sealed space formed by the housing and the sealing cover plate, and the wiring part is located outside the sealed space. A housing installation post perpendicular to the downward direction is provided on the inner top surface of the housing, and a cover plate installation post perpendicular to the upward direction is provided on the top surface of the sealing cover plate. The lower end of the housing installation post abuts against the top surface of the circuit board, and the upper end of the cover plate installation post abuts against the bottom surface of the circuit board. A through hole is provided in the middle of the circuit board. The housing installation post, the cover plate installation post and the through hole are coaxially arranged, and installation holes are provided at the axes of the housing installation post and the cover plate installation post. The sealing cover plate is fixedly connected to the housing by screws passing through the installation hole of the cover plate installation post, the through hole and the installation hole of the housing installation post. In this technical solution, the sealing cover plate can be fixed to the housing by one screw, which is fixed more firmly and makes the overall stability of the power box better.

[0005] In a preferred technical solution, a vertical downward limiting rib is provided on the inner top surface of the housing. The lower end of the limiting rib abuts against the top surface of the circuit board, and a limiting protrusion is provided at the lower end of the limiting rib. A limiting groove corresponding to the position of the limiting protrusion is provided on one side edge of the circuit board close to the wiring part. The limiting groove and the limiting protrusion are cooperatively clamped.

[0006] In a preferred technical solution, the number of the limiting protrusions and the limiting grooves is at least two.

[0007] In a preferred technical solution, at least one vertically downward support rib is provided on the inner top surface of the housing, and the lower end of the support rib abuts against the top surface of the circuit board, which can further enhance the installation stability of the circuit board.

[0008] In a preferred technical solution, the side structure of the sealing cover plate matches and fits with the side wall of the housing. A raised sealing rib is provided on the inner side of the side wall of the housing, and a sealing recess matching the sealing rib is provided on the sealing cover plate. After installation, the sealing cover plate and the housing are tightly buckled, having better sealing performance.

[0009] In a preferred technical solution, a rounded rectangular groove is provided on the top of the sealing cover plate. The cover plate mounting posts are provided on the rounded rectangular groove, and a conical strengthening part extending along the circumferential direction of the cover plate mounting post is formed on the part of the cover plate mounting post adjacent to the bottom surface of the rounded rectangular groove. A conical hole communicating with the mounting hole of the sealing mounting post is provided in the conical strengthening part.

[0010] In a preferred technical solution, at least two fixing ears are provided at the bottom of one side of the housing close to the wiring part, and one housing fixing hole is provided at each of the two corners at the bottom of the side of the housing close to the electronic components. The power supply box is integrally installed on the top surface of the range hood through mounting screws passing through the fixing ears and the housing fixing holes.

[0011] In a preferred technical solution, cover plate fixing holes corresponding to the positions of the housing fixing holes are respectively provided at the two corners at the bottom of one side of the sealing cover plate. The mounting screws pass through the housing fixing holes and the cover plate fixing holes in sequence to install the power supply box on the top surface of the range hood, making the connection between the sealing cover plate and the housing more firm.

[0012] In a preferred technical solution, the wiring part includes a wiring terminal and a socket, and protective rib edges are provided around the wiring terminal and the socket, playing a protective role.

[0013] As can be seen from the above technical solutions, compared with the prior art, the beneficial effects of the present utility model are as follows: An upper-mounted waterproof and oil-proof power supply box for a range hood separates the wiring part on the circuit board from the electronic components by adding a sealing cover plate in the power supply box, so that all the electronic components on the circuit board are in a sealed space, and the wiring part is outside the sealed space. This can not only ensure convenient connection of the plug-in wires, but also effectively isolate the components on the circuit board from external oil fumes and water vapors, avoiding the entry of oil fumes and water vapors into the circuit board to pollute and corrode the components, thereby greatly improving the service life of the range hood; at the same time, the sealing cover plate is fixed on the housing by screws, which is fixed more firmly, making the overall stability of the power supply box better.

[0014] In addition, other advantages of the present utility model will be given in the following description, and some will become obvious from the following description or can be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0016] Figure 1 It is a schematic exploded view of the power supply box of the present invention;

[0017] Figure 2 It is a schematic cross-sectional view of the power supply box of the present invention;

[0018] Figure 3 It is another schematic exploded view of the power supply box of the present invention;

[0019] Explanation of reference numerals: 1, outer shell; 2, circuit board; 3, sealing cover plate; 11, outer shell mounting post; 12, limiting rib; 13, limiting protrusion; 14, support rib; 15, sealing rib; 16, fixing ear; 17, outer shell fixing hole; 21, electronic components; 22, wiring part; 23, limiting groove; 24, protection rib; 31, partition board; 32, cover plate mounting post; 33, sealing recess; 34, tapered strengthening part; 35, cover plate fixing hole. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] Refer to Figures 1-3Describe a waterproof and oil-proof power box for an oil fume extractor according to an embodiment of the present utility model.

[0023] In one embodiment, as Figures 1-3 shown, a waterproof and oil-proof power box for an oil fume extractor includes a power box installed on the top surface of the oil fume extractor. The power box includes a housing 1, a circuit board 2 disposed inside the housing 1, and a sealing cover plate 3 installed at the bottom of the housing 1. On both sides of the bottom of the circuit board 2, there are respectively an electronic component 21 and a wiring part 22. On one side of the sealing cover plate 3, there is a vertically upward partition 31. The partition 31 separates the electronic component 21 and the wiring part 22, so that the electronic component 21 is located in the sealed space formed by the housing 1 and the sealing cover plate 3, and the wiring part 22 is located outside the sealed space. Among them, the top end of the partition 31 presses on the bottom surface of the circuit board 2. On the one hand, it is used to form a sealed space with the housing 1 to separate the electronic component 21 and the wiring part 22. On the other hand, it presses the circuit board 2 to play a role in fixing the circuit board 2. In specific implementation, a connecting wire is detachably provided on the wiring part 22, and a wire hole is provided on the top surface of the oil fume extractor, and the connecting wire can extend into the interior of the oil fume extractor through the wire hole.

[0024] On the inner top surface of the housing 1, there is a vertically downward housing mounting post 11. On the top surface of the sealing cover plate 3, there is a vertically upward cover plate mounting post 32. The lower end of the housing mounting post 11 abuts on the top surface of the circuit board 2, and the upper end of the cover plate mounting post 32 abuts on the bottom surface of the circuit board 2. A through hole is provided in the middle of the circuit board 2. The housing mounting post 11, the cover plate mounting post 32 and the through hole are coaxially arranged, and mounting holes are provided on the axes of both the housing mounting post 11 and the cover plate mounting post 32. The sealing cover plate 3 is fixedly connected to the housing 1 by screws passing through the mounting hole of the cover plate mounting post 32, the through hole, and the mounting hole of the housing mounting post 11.

[0025] In specific implementation, the mounting hole can be a threaded through hole, which is convenient for bolts to pass through to fixedly connect the sealing cover plate 3 to the housing 1. Further, the wiring part 22 can include a wiring terminal and a socket, and protective ribs 24 are provided around both the wiring terminal and the socket.

[0026] An upper-mounted waterproof and anti-oil fume power box for a range hood provided by the above embodiment separates the wiring part 22 on the circuit board 2 from the electronic components 21 by adding a sealing cover plate 3 in the power box, so that all the electronic components 21 of the circuit board 2 are in a sealed space, and the wiring part 22 is outside the sealed space. This can not only ensure convenient connection of the plug-in wires, but also effectively isolate the components on the circuit board 2 from external oil fume and water vapor, avoiding the entry of oil fume and water vapor into the circuit board 2 to pollute and corrode the components, thereby greatly improving the service life of the range hood. At the same time, the sealing cover plate 3 is fixed to the outer shell 1 by screws, and the fixation is more reliable, making the overall stability of the power box better. In this embodiment, a vertically downward limiting rib 12 is provided on the inner top surface of the outer shell 1. The lower end of the limiting rib 12 abuts against the top surface of the circuit board 2, and a limiting protrusion 13 is provided at the lower end of the limiting rib 12. A limiting groove 23 corresponding to the position of the limiting protrusion 13 is provided on one side edge of the circuit board 2 close to the wiring part 22, and the limiting groove 23 cooperates with the limiting protrusion 13 for clamping. Further, the number of the limiting protrusions 13 and the limiting grooves 23 is at least two to play a full limiting role.

[0027] In the above embodiment, by providing the limiting rib 12 with the limiting protrusion 13 on the outer shell 1, on the one hand, since the lower end of the limiting rib 12 abuts against the top surface of the circuit board 2 and cooperates with the outer shell mounting post 11 abutting against the middle of the circuit board 2, the circuit board 2 can be prevented from shaking up and down. On the other hand, the limiting protrusion 13 at the lower end of the limiting rib 12 can cooperate with the limiting groove 23 on the edge of the circuit board 2 for clamping to prevent the circuit board 2 from shaking left and right. Therefore, the limiting rib 12 can play a role in fixing the circuit board 2 and strengthening the stability.

[0028] In this embodiment, at least one vertically downward support rib 14 is provided on the inner top surface of the outer shell 1. The lower end of the support rib 14 abuts against the top surface of the circuit board 2, which can further strengthen the installation stability of the circuit board 2.

[0029] In this embodiment, the side structure of the sealing cover plate 3 matches and fits with the side wall of the outer shell 1. A raised sealing rib 15 is provided on the inner side of the side wall of the outer shell 1, and a sealing recess 33 matching the sealing rib 15 is provided on the sealing cover plate 3. After installation, the sealing cover plate 3 and the outer shell 1 are tightly buckled, thereby ensuring the sealing performance of the sealed space formed by the two.

[0030] In this embodiment, a rounded rectangular groove is provided on the top of the sealing cover plate 3. The cover mounting post 32 is provided on the rounded rectangular groove, and a part of the cover mounting post 32 adjacent to the bottom surface of the rounded rectangular groove is formed into a tapered strengthening part 34 extending along the circumference of the cover mounting post 32. A tapered hole communicating with the mounting hole of the sealing mounting post is provided in the tapered strengthening part 34.

[0031] In this embodiment, the cover plate mounting post 32 with a conical reinforcing portion 34 is more stable, which can make the installation of the sealing cover plate 3 more firm, thereby further improving the sealing performance and achieving better waterproof and oil-proof effects.

[0032] In this embodiment, at least two fixing ears 16 are provided at the bottom of one side of the housing 1 close to the wiring portion 22, and one housing fixing hole 17 is provided at each of the two corners at the bottom of the side of the housing 1 close to the electronic component 21. The power supply box is integrally installed on the top surface of the range hood through mounting screws passing through the fixing ears 16 and the housing fixing holes 17.

[0033] In this embodiment, cover plate fixing holes 35 corresponding to the positions of the housing fixing holes 17 are respectively provided at the two corners at the bottom of one side of the sealing cover plate 3. The mounting screws pass through the housing fixing holes 17 and the cover plate fixing holes 35 in sequence to install the power supply box on the top surface of the range hood. While installing the power supply box, the connection between the sealing cover plate 3 and the housing 1 is further strengthened, so that the connection between the sealing cover plate 3 and the housing 1 is tighter, and a better sealing effect is obtained.

[0034] Other components and operations of the upper-mounted waterproof and oil-proof power supply box of the range hood according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] In the description of this specification, the descriptions referring to terms such as "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention.

[0037] In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples without interference or contradiction.

[0038] The materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims

1. A waterproof and fume-proof power supply box mounted on a range hood, characterized in that: It includes a power box installed on the top surface of the range hood, the power box includes a shell, a circuit board arranged in the shell, and a sealing cover installed on the bottom of the shell; Electronic components and wiring parts are respectively arranged on both sides of the bottom of the circuit board, and a partition vertically upward is arranged on one side of the sealing cover plate, and the partition separates the electronic components from the wiring parts, so that the electronic components are located in the sealed space formed by the housing and the sealing cover plate, and the wiring parts are located outside the sealed space; A vertically downward shell mounting column is provided on the inner top surface of the shell, and a vertically upward cover mounting column is provided on the top surface of the sealing cover plate, the lower end of the shell mounting column abuts against the top surface of the circuit board, and the upper end of the cover mounting column abuts against the bottom surface of the circuit board; a through hole is provided in the middle of the circuit board, the shell mounting column, the cover mounting column and the through hole are coaxially arranged, and the axis of the shell mounting column and the cover mounting column are both provided with mounting holes; the sealing cover plate is fixedly connected to the shell by screws passing through the mounting hole of the cover mounting column, the through hole and the mounting hole of the shell mounting column.

2. The waterproof and fume-proof power supply box for range hood according to claim 1, characterized in that: A vertically downward limiting rib is provided on the inner top surface of the shell, the lower end of the limiting rib abuts against the top surface of the circuit board, and a limiting protrusion is provided on the lower end of the limiting rib; a limiting groove corresponding to the position of the limiting protrusion is provided on one side edge of the circuit board close to the wiring part, and the limiting groove is engaged and clamped with the limiting protrusion.

3. The waterproof and fume-proof power supply box for range hood according to claim 2 is characterized in that: The number of the limiting protrusions and the number of the limiting grooves are both at least two.

4. The waterproof and fume-proof power supply box for range hood according to claim 2, characterized in that: At least one vertical downward supporting rib is arranged on the inner top surface of the shell, and the lower end of the supporting rib abuts against the top surface of the circuit board.

5. The waterproof and fume-proof power supply box for range hood according to claim 1, characterized in that: The side structure of the sealing cover plate matches and fits with the side wall of the shell, a raised sealing rib is provided on the inner side of the side wall of the shell, and a sealing recess matching with the sealing rib is provided on the sealing cover plate.

6. The waterproof and fume-proof power supply box for range hoods according to any one of claims 1 to 5, characterized in that: A rounded rectangular groove is provided on the top of the sealing cover plate, the cover plate mounting column is provided on the rounded rectangular groove, and a portion of the cover plate mounting column adjacent to the bottom surface of the rounded rectangular groove is formed as a conical reinforcement portion extending along the circumference of the cover plate mounting column, and a conical hole connected to the mounting hole of the sealing mounting column is provided in the conical reinforcement portion.

7. The waterproof and fume-proof power supply box for range hoods according to claim 6, characterized in that: At least two fixing ears are provided at the bottom of one side of the shell close to the wiring part, and a shell fixing hole is provided at each of the two corners of the bottom of one side of the shell close to the electronic components. The power box is integrally mounted on the top surface of the range hood by means of mounting screws passing through the fixing ears and the shell fixing holes.

8. The waterproof and fume-proof power supply box for range hood according to claim 7, characterized in that: Cover plate fixing holes corresponding to the positions of the outer shell fixing holes are respectively provided at two corners of the bottom of one side of the sealing cover plate, and the mounting screws pass through the outer shell fixing holes and the cover plate fixing holes in sequence to mount the power box on the top surface of the range hood.

9. The waterproof and fume-proof power supply box for range hood according to claim 1, characterized in that: The wiring part comprises a wiring terminal and a connection socket, and the wiring terminal and the connection socket are both provided with protective ribs around them.

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