Desktop range hood and lifting adjusting device thereof

Abstract

The embodiment of the utility model discloses a desktop range hood and a lifting adjusting device thereof, and relates to the technical field of range hoods, the lifting adjusting device comprises an outer pipe, an inner pipe and a base, the bottom end of the outer pipe is connected with the base; the top end of the inner tube is connected with the head component; the inner surface of the outer pipe is provided with a first embedding part arranged in the axial direction, and the outer surface of the inner pipe is provided with a second embedding part arranged in the axial direction. The outer pipe is arranged on the outer side of the inner pipe in a sleeving mode, and the first embedding part and the second embedding part abut against each other and are embedded. When no external force exists, the inner pipe can be fixed to the outer pipe through the friction force between the inner pipe and the outer pipe. And under the action of external force, the inner pipe can slide on the outer pipe, so that the height of the head assembly of the desktop range hood can be adjusted at will to adapt to different cookware, and meanwhile, the adjusting process is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a desktop range hood and its lifting and adjusting device. Background Technology

[0002] Desktop range hoods are typically used at the dining table to remove fumes produced by cooking methods such as dry pot and hot pot. As people's living standards improve, desktop range hoods are becoming increasingly popular. However, existing desktop range hoods usually have a fixed height, which cannot accommodate cookware of various heights. Some desktop range hoods on the market are height-adjustable, typically with multiple height settings switched via a limit mechanism; however, the height cannot be adjusted arbitrarily, and the adjustment process is complicated. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is that the height of existing desktop range hoods cannot be arbitrarily adjusted, and the adjustment process is complicated.

[0004] To address the aforementioned problems, in a first aspect, this utility model provides a lifting and adjusting device applied to a desktop range hood. The desktop range hood includes a head assembly, and the lifting and adjusting device includes an outer tube, an inner tube, and a base. The bottom end of the outer tube is connected to the base; the top end of the inner tube is connected to the head assembly; the inner surface of the outer tube has a first fitting portion arranged axially, and the outer surface of the inner tube has a second fitting portion arranged axially; the outer tube is sleeved on the outside of the inner tube, and the first fitting portion and the second fitting portion abut against each other.

[0005] A further technical solution is that the number of the first fitting parts is multiple, and the multiple first fitting parts are evenly distributed on the inner surface of the outer tube;

[0006] The number of the second fitting parts is multiple, and the multiple second fitting parts are evenly distributed on the outer surface of the inner tube;

[0007] The number of the first fitting part and the number of the second fitting parts are the same, and the plurality of the first fitting parts abut and fit together with the plurality of the second fitting parts.

[0008] A further technical solution is that the first fitting part is a first convex slide rail protruding inward from the inner surface of the outer tube; the second fitting part is a first concave slide groove recessed inward from the outer surface of the inner tube.

[0009] A further technical solution is that the first fitting part is a second concave groove recessed from the inner surface of the outer tube to the outside; the second fitting part is a second convex rail protruding from the outer surface of the inner tube to the outside.

[0010] A further technical solution is that the base is provided with a mounting hole, and the bottom end of the outer tube is embedded in the mounting hole; the inner wall of the mounting hole is provided with a hook, and the outer surface of the outer tube is provided with a slot, and the hook is embedded in the slot.

[0011] A further technical solution is that the number of hooks is multiple, and the multiple hooks are evenly distributed on the inner wall of the mounting hole; the number of slots is multiple, and the multiple slots are evenly distributed on the outer surface of the outer tube; the number of hooks and slots is the same, and the multiple hooks are respectively embedded in the multiple slots.

[0012] A further technical solution is that the lifting and adjusting device also includes a head connector, and the top end of the inner tube is connected to the head assembly through the head connector.

[0013] A further technical solution is that the head connector includes a connecting part, which is embedded in the top end of the inner tube; the connecting part is provided with a first limiting part protruding from the outer surface, and the inner surface of the inner tube is provided with a first limiting groove, in which the first limiting part is embedded.

[0014] A further technical solution is that the outer surface of the connecting part is provided with a second limiting groove, the inner tube is provided with a second limiting part, and the second limiting part is embedded in the second limiting groove.

[0015] Secondly, this utility model provides a desktop range hood, which includes the lifting and adjusting device as described in the first aspect.

[0016] Compared with the prior art, the technical effects achieved by the embodiments of this utility model include:

[0017] The technical solution of this utility model embodiment allows the inner tube to be fixed on the outer tube by the friction between the inner and outer tubes when there is no external force; while under the action of external force, the inner tube can slide on the outer tube, thereby realizing arbitrary adjustment of the height of the head assembly of the desktop range hood to adapt to different cookware, and the adjustment process is simple and convenient. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a structural schematic diagram of a desktop range hood proposed in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly of the outer tube and the base in a lifting and adjusting device according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the outer tube of a lifting and adjusting device according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly of the outer tube and inner tube of a lifting and adjusting device according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the assembly of the inner tube and the head connector of a lifting and adjusting device according to an embodiment of the present invention.

[0026] Figure Labels

[0027] Outer tube 10, first fitting part 11, bayonet 12, inner tube 20, second fitting part 21, first limiting groove 22, second limiting part 23, base 30, mounting hole 31, mounting part 32, support part 33, hook 311, head connector 40, connecting part 41, first limiting part 411, second limiting groove 412, interface part 42, head assembly 50. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Similar component reference numerals in the drawings represent similar components. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification of embodiments of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the present invention. As used in this specification of embodiments of the present invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] See Figures 1-5 This utility model provides a lifting and adjusting device for use in a desktop range hood. The desktop range hood includes a head assembly 50, which is the part of the range hood that absorbs cooking fumes. This head assembly typically includes a fan, a fume hood, and other components, but is not specifically limited to this. In this embodiment, the height of the head assembly 50 can be arbitrarily adjusted using the lifting and adjusting device, thus adapting to cookware of different heights, and the adjustment method is simple. Specifically, the lifting and adjusting device includes an outer tube 10, an inner tube 20, and a base 30, the specific structure of which is described below:

[0032] The bottom end of the outer tube 10 is connected to the base 30; the top end of the inner tube 20 is connected to the head assembly 50. The base 30 provides support and stability. The head assembly 50 is located at the top end of the inner tube 20 and can move up and down with the inner tube 20.

[0033] In this embodiment of the present invention, the inner surface of the outer tube 10 is provided with a first fitting portion 11 arranged along the axial direction, and the outer surface of the inner tube 20 is provided with a second fitting portion 21 arranged along the axial direction; the outer tube 10 is sleeved on the outside of the inner tube 20, and the first fitting portion 11 and the second fitting portion 21 abut against each other.

[0034] The length of the first fitting part 11 may be equal to or less than the length of the outer tube 10. For example, in this embodiment, the length of the first fitting part 11 is equal to the length of the outer tube 10.

[0035] The length of the second fitting portion 21 may be equal to or less than the length of the inner tube 20. For example, in this embodiment, the length of the second fitting portion 21 is equal to the length of the inner tube 20.

[0036] The outer tube 10 and the inner tube 20 can be made of elastic materials. For example, in this embodiment, the outer tube 10 and the inner tube 20 are made of aluminum alloy. Meanwhile, the outer tube 10 and the inner tube 20 are interference-fitted, resulting in significant friction between them.

[0037] Furthermore, the first fitting portion 11 and the second fitting portion 21 are interlocked and abut against each other, thereby creating a large frictional force between the outer tube 10 and the inner tube 20. This frictional force is greater than the weight of the head assembly 50. Therefore, under the weight of the head assembly 50 alone, the inner tube 20 can be fixed to the outer tube 10 without slipping. When an external force is applied, the inner tube 20 can slide on the outer tube 10, thereby adjusting the height of the head assembly 50.

[0038] The technical solution of this utility model embodiment allows the inner tube 20 to be fixed on the outer tube 10 by the friction between the inner tube 20 and the outer tube 10 when there is no external force; while under the action of external force, the inner tube 20 can slide on the outer tube 10, thereby realizing the arbitrary adjustment of the height of the head assembly 50 of the desktop range hood to adapt to different cookware, and the adjustment process is simple and convenient.

[0039] Furthermore, in some embodiments, there are multiple first fitting portions 11, which are evenly distributed on the inner surface of the outer tube 10. For example, in this embodiment, there are two first fitting portions 11, which are located on both sides of the outer tube 10.

[0040] There are multiple second fitting portions 21, which are evenly distributed on the outer surface of the inner tube 20. For example, in this embodiment, there are two second fitting portions 21, which are located on both sides of the inner tube 20.

[0041] The number of the first fitting part 11 and the second fitting part 21 are the same, for example, two of each. The plurality of first fitting parts 11 respectively abut and fit with the plurality of second fitting parts 21.

[0042] In this embodiment, by setting multiple first fitting parts 11 and multiple second fitting parts 21 to abut against each other, the friction between the outer tube 10 and the inner tube 20 can be effectively increased, thereby improving the reliability of fixing the inner tube and the outer tube.

[0043] Furthermore, in some embodiments, the first fitting portion 11 is a first convex slide rail protruding inward from the inner surface of the outer tube 10; the second fitting portion 21 is a first concave slide groove recessed inward from the outer surface of the inner tube 20.

[0044] The first convex slide rail is embedded in the first concave slide groove, and the first convex slide rail abuts against the first concave slide groove. Therefore, under the weight of the head assembly 50 alone, the inner tube 20 can be fixed to the outer tube 10 without slipping. When an external force is applied, the inner tube 20 can slide on the outer tube 10, thereby adjusting the height of the head assembly 50.

[0045] Furthermore, in some embodiments, the first fitting portion 11 is a second concave groove recessed outward from the inner surface of the outer tube 10; the second fitting portion 21 is a second convex rail protruding outward from the outer surface of the inner tube 20.

[0046] The second convex slide rail is embedded in the second concave slide groove, and the second convex slide rail abuts against the second concave slide groove. Therefore, under the weight of the head assembly 50 alone, the inner tube 20 can be fixed to the outer tube 10 without slipping. When an external force is applied, the inner tube 20 can slide on the outer tube 10, thereby adjusting the height of the head assembly 50.

[0047] Furthermore, in some embodiments, the base 30 is provided with a mounting hole 31, and the bottom end of the outer tube 10 is embedded in the mounting hole 31; the inner wall of the mounting hole 31 is provided with a hook 311, and the outer surface of the outer tube 10 is provided with a bayonet 12, and the hook 311 is embedded in the bayonet 12. The bayonet 12 may or may not penetrate the side wall of the outer tube 10.

[0048] For better assembly, the hook 311 can be elastic, for example, the hook 311 can be made of elastic material. By engaging the hook 311 with the bayonet 12, a good limiting effect can be achieved between the outer tube 10 and the base 30, effectively restricting the movement of the outer tube 10.

[0049] Furthermore, there are multiple hooks 311, which are evenly distributed on the inner wall of the mounting hole 31; there are multiple bayonets 12, which are evenly distributed on the outer surface of the outer tube 10; the number of hooks 311 and bayonets 12 is the same, and the multiple hooks 311 are respectively embedded in the multiple bayonets 12.

[0050] By engaging multiple hooks 311 with multiple bayonets 12, the reliability of the positioning between the outer tube 10 and the base 30 can be further improved.

[0051] Furthermore, the base 30 includes an interconnected mounting portion 32 and a support portion 33, which can be integrally formed. The mounting portion 32 is located on one side of the support portion 33. A mounting hole 31 is located in the mounting portion 32. The support portion 33 is flat, which effectively increases the support area of ​​the base 30, thereby improving the stability of the base 30. The support portion 33 can also be used to place cookware. Simultaneously, the fume extractor of the head assembly 50 is located above the support portion 33, thus enabling better extraction of cooking fumes.

[0052] Furthermore, the lifting adjustment device also includes a head connector 40, through which the top end of the inner tube 20 is connected to the head assembly 50. For example, the head connector 40 is connected to the head assembly 50 by fasteners and / or snap-fit ​​structures. Specifically, the head assembly 50 includes components such as a housing, a fan, and a fume hood, which are mounted on the housing. The head connector 40 is connected to the housing and the head assembly 50 by fasteners and / or snap-fit ​​structures.

[0053] Furthermore, the head connector 40 includes a connecting portion 41 and an interface portion 42. The connecting portion 41 may be cylindrical and is embedded in the top end of the inner tube 20. The connecting portion 41 has a first limiting portion 411 protruding from its outer surface, and the inner surface of the inner tube 20 has a first limiting groove 22. The first limiting portion 411 is embedded in the first limiting groove 22. Through the limiting effect of the first limiting portion 411 and the first limiting groove 22, the head connector 40 and the inner tube 20 can be limited.

[0054] Furthermore, the outer surface of the connecting part 41 is provided with a second limiting groove 412, and the inner tube 20 is provided with a second limiting part 23, which is embedded in the second limiting groove 412. Through the limiting effect of the second limiting part 23 and the second limiting groove 412, the head connector 40 and the inner tube 20 can be further limited.

[0055] In this embodiment, based on the mutual engagement of the first limiting part 411 and the first limiting groove 22 and the mutual engagement of the second limiting part 23 and the second limiting groove 412, the head connector 40 and the inner tube 20 have multiple limiting positions, and each of them is partially embedded in the other, thereby achieving reliable limiting and fixing of the head connector 40 and the inner tube 20 and preventing them from moving relative to each other.

[0056] Furthermore, the connecting portion 41 and the interface portion 42 of the head connector 40 are integrally formed, and the interface portion 42 is used to connect to the head assembly 50 by fasteners and / or snap-fit ​​structures.

[0057] This utility model provides a desktop range hood, which includes the lifting and adjusting device provided in any of the above embodiments.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0059] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0064] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0065] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A lifting and adjusting device, characterized in that: Applied to a desktop range hood, the desktop range hood includes a head assembly, and the lifting and adjusting device includes an outer tube, an inner tube and a base; the bottom end of the outer tube is connected to the base; the top end of the inner tube is connected to the head assembly; the inner surface of the outer tube is provided with a first engaging portion arranged along the axial direction, and the outer surface of the inner tube is provided with a second engaging portion arranged along the axial direction; the outer tube is sleeved on the outer side of the inner tube, and the first engaging portion and the second engaging portion are abutted and engaged with each other.

2. The lifting and lowering adjustment device according to claim 1, characterized in that: There are multiple first embedding parts, and the multiple first embedding parts are evenly distributed on the inner surface of the outer tube; There are multiple second embedding parts, and the multiple second embedding parts are evenly distributed on the outer surface of the inner tube; The number of the first fitting parts is the same as the number of the second fitting parts, and the plurality of the first fitting parts are respectively abutted and fitted with the plurality of the second fitting parts.

3. The lifting and lowering adjustment device according to any one of claims 1 to 2, characterized in that: The first engaging portion is a first convex slide rail protruding inward from the inner surface of the outer tube; the second engaging portion is a first concave slide groove recessed inward from the outer surface of the inner tube.

4. The lifting and lowering adjustment device according to any one of claims 1 to 2, characterized in that: The first engaging portion is a second concave slide groove that is recessed from the inner surface of the outer tube toward the outside; the second engaging portion is a second convex slide rail that is protruded from the outer surface of the inner tube toward the outside.

5. The lifting and lowering adjustment device according to claim 1, characterized in that: The base is provided with a mounting hole, and the bottom end of the outer tube is embedded in the mounting hole; the inner wall of the mounting hole is provided with a hook, and the outer surface of the outer tube is provided with a bayonet, and the hook is embedded in the bayonet.

6. The lifting and lowering adjustment device according to claim 5, characterized in that: There are multiple hooks, which are evenly distributed on the inner wall of the mounting hole; there are multiple bayonet holes, which are evenly distributed on the outer surface of the outer tube; there are the same number of hooks as bayonet holes, and the hooks are respectively embedded in the bayonet holes.

7. The lifting and lowering adjustment device according to claim 1, characterized in that: The lifting and lowering adjustment device also includes a head joint, and the top end of the inner tube is connected to the head assembly through the head joint.

8. The lifting and lowering adjustment device according to claim 7, characterized in that: The head joint includes a connecting portion, which is embedded in the top end of the inner tube; the connecting portion is provided with a first limiting portion protruding from the outer surface, and the inner surface of the inner tube is provided with a first limiting groove, and the first limiting portion is embedded in the first limiting groove.

9. The lifting and lowering adjustment device according to claim 8, characterized in that: The outer surface of the connecting portion is provided with a second limiting groove, the inner tube is provided with a second limiting portion, and the second limiting portion is embedded in the second limiting groove.

10. A desktop range hood, characterized in that: It comprises a lifting and adjusting device as described in any one of claims 1 to 9.

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