Screw rod module and lifting range hood

Abstract

The utility model provides a lead screw module and a lifting range hood, and relates to the technical field of kitchen appliances, the lead screw module provided by the utility model comprises a shell, a lead screw transmission piece and a first elastic sealing piece, the shell is provided with a transmission groove extending along the movement direction of the lead screw transmission piece, and the transmission groove penetrates through the inner wall and the outer wall of the shell; the first elastic sealing piece is mounted in the transmission groove; the first elastic sealing piece is provided with a notch extending in the movement direction of the lead screw transmission piece, and the lead screw transmission piece moves in the notch. The width of the notch is smaller than that of the transmission groove.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a lead screw module and a lifting range hood. Background Art

[0002] At present, in order to improve the smoking effect, many methods have been adopted for the range hoods on the market. Among them, making the air inlet movable is one direction. When not cooking, the air inlet is hidden inside the cavity. When cooking, the air inlet moves to make the air inlet closer to the smoke source, suck away the oil fume, and thus improve the smoking effect.

[0003] However, a problem is brought at the same time. When the air inlet assembly descends, generally a lead screw motor is used as the power source, and the two side guide rails slide for lifting. During the cooking process, the surfaces of the lead screw and the guide rails come into contact with the oil fume, forming condensed oil accumulation. After cooking, the oil and grease condense and solidify, which easily causes the lead screw to be blocked by the solidified oil stains or impurities and cannot be transmitted. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lead screw module and a lifting range hood to alleviate the technical problem that the lead screw of the existing lifting range hood is easily contaminated.

[0005] In a first aspect, a lead screw module provided by the utility model includes: a housing, a lead screw transmission member, and a first elastic seal. A transmission groove extending along the movement direction of the lead screw transmission member is provided on the housing, and the transmission groove penetrates the inner and outer walls of the housing;

[0006] The first elastic seal is installed in the transmission groove; a notch extending along the movement direction of the lead screw transmission member is provided on the first elastic seal, and the lead screw transmission member moves in the notch;

[0007] The width of the notch is smaller than the width of the transmission groove.

[0008] Further, in the width direction of the notch, the length value of the lead screw transmission member in the width direction of the notch is greater than or equal to the width value of the notch.

[0009] Further, along the length direction of the notch, a first flanging is provided on one long side edge of the notch and is turned over to the outside of the housing, and a second flanging is provided on the other long side edge of the notch and is turned over to the outside of the housing, and the first flanging and the second flanging clamp the lead screw transmission member.

[0010] Further, first magnetic attraction structures are correspondingly provided on the mutually facing surfaces of the first flanging and the second flanging so that the first flanging and the second flanging are magnetically connected.

[0011] Further, the first magnetic attraction structure includes a first magnet provided on the first flanging and extending along the length direction of the notch;

[0012] The first magnetic attraction structure includes a second magnet disposed on the second flanging and extending along the length direction of the notch.

[0013] Furthermore, it further includes a protective box and a connecting arm. The protective box is disposed outside the outer shell. An installation groove extending along the movement direction of the lead screw transmission member is provided on the protective box, and the installation groove penetrates the inner and outer walls of the protective box;

[0014] A second elastic seal is provided in the installation groove, and an opening extending along the movement direction of the lead screw transmission member is provided on the second elastic seal;

[0015] The connecting arm is connected to the lead screw transmission member, and the connecting portion of the connecting arm is located outside the protective box. The connecting portion is used for connecting with the lifting housing of the range hood, and the connecting arm moves within the opening;

[0016] The width of the opening is smaller than the width of the installation groove.

[0017] Furthermore, in the width direction of the opening, the length value of the connecting arm in the width direction of the opening is greater than or equal to the width value of the opening.

[0018] Furthermore, along the length direction of the opening, a third flanging that is folded outward to the outside of the protective box is provided on one long side edge of the opening, and a fourth flanging that is folded outward to the outside of the protective box is provided on the other long side edge of the opening. The third flanging and the fourth flanging clamp the connecting arm.

[0019] Furthermore, second magnetic attraction structures are correspondingly provided on the mutually facing surfaces of the third flanging and the fourth flanging, so that the third flanging and the fourth flanging are magnetically connected.

[0020] In a second aspect, a lifting range hood provided by the present utility model includes the above-mentioned lead screw module.

[0021] The present utility model at least has the following advantages or beneficial effects:

[0022] The lead screw module provided by the present utility model includes: an outer shell, a lead screw transmission member, and a first elastic seal. A transmission groove extending along the movement direction of the lead screw transmission member is provided on the outer shell, and the transmission groove penetrates the inner and outer walls of the outer shell; the first elastic seal is installed in the transmission groove; a notch extending along the movement direction of the lead screw transmission member is provided on the first elastic seal, and the lead screw transmission member moves within the notch; the width of the notch is smaller than the width of the transmission groove.

[0023] A first elastic seal is added in the transmission groove to block the transmission groove. A notch is provided on the first elastic seal, and the lead screw transmission member moves along the notch. Since the width of the notch is smaller than the width of the transmission groove, compared with the case where the first elastic seal is not provided, the cross-sectional area of the channel for oil stain to enter the interior of the outer shell is reduced, playing a sealing role.

[0024] The lift range hood provided by the present utility model includes the above-mentioned lead screw module. Since the lift range hood provided by the present utility model incorporates the above-mentioned lead screw module, the lift range hood provided by the present utility model also has the advantages of the lead screw module. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic diagram of the interior of the protective box of the lead screw module provided in an embodiment of the present utility model;

[0027] Figure 2 For Figure 1 Partial enlarged view of position A in

[0028] Figure 3 Cross-sectional view of the first elastic seal of the lead screw module provided in an embodiment of the present utility model;

[0029] Figure 4 Schematic diagram of the lead screw module provided in an embodiment of the present utility model;

[0030] Figure 5 For Figure 4 Partial enlarged view of position B in

[0031] Figure 6 Cross-sectional view of the second elastic seal of the lead screw module provided in an embodiment of the present utility model.

[0032] Reference numerals: 1 - outer shell; 2 - lead screw transmission member; 3 - first elastic seal; 31 - notch; 41 - first flange; 42 - second flange; 43 - third flange; 44 - fourth flange; 51 - first magnet; 52 - second magnet; 53 - third magnet; 54 - fourth magnet; 6 - protective box; 7 - connecting arm; 8 - second elastic seal. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is 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 thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0037] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" 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 elements. 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 circumstances.

[0039] The lead screw module provided by the present invention can be but is not limited to being installed in a lifting range hood, and can also be installed in other electrical appliances that require linear drive.

[0040] Such as Figure 1 - Figure 3As shown in the figure, the lead screw module includes: a housing 1, a lead screw, a motor, a lead screw transmission member 2, and a first elastic seal 3. The motor and the lead screw are both located inside the housing 1. The motor drives the lead screw to rotate, and the lead screw transmission member 2 connected to the lead screw performs a linear motion along the length direction of the lead screw.

[0041] A transmission groove extending along the moving direction of the lead screw transmission member 2 is provided on the housing 1, and the transmission groove penetrates the inner and outer walls of the housing 1. The first elastic seal 3 is installed in the transmission groove. The material of the first elastic seal 3 can be rubber. A notch 31 extending along the moving direction of the lead screw transmission member 2 is provided on the first elastic seal 3, and the lead screw transmission member 2 performs a linear motion within the notch 31. The width of the notch 31 is smaller than the width of the transmission groove. The notch 31 is narrower, and it is more difficult for oil fume to pass through.

[0042] Different from the existing lead screw module, in this embodiment, a first elastic seal 3 is added in the transmission groove to block the transmission groove. A notch 31 is provided on the first elastic seal 3, and the lead screw transmission member 2 moves along the notch 31. Since the width of the notch 31 is smaller than the width of the transmission groove, compared with the case where the first elastic seal 3 is not provided, the cross-sectional area of the channel for oil stain to enter the interior of the housing 1 is reduced, playing a sealing role.

[0043] In the width direction of the notch 31, the length value of the lead screw transmission member 2 in the width direction of the notch 31 is greater than or equal to the width value of the notch 31. That is to say, in the natural state, the two long sides of the notch 31 clamp the opposite side walls of the lead screw transmission member 2. When the lead screw transmission member 2 moves to a certain position of the notch 31, this position is gradually expanded, and when the lead screw transmission member 2 leaves, this position closes, thereby achieving sealing.

[0044] As Figure 3 As shown in the figure, along the length direction of the notch 31, a first flanging 41 that is folded outward to the outside of the housing 1 is provided on one long side edge of the notch 31, and a second flanging 42 that is folded outward to the outside of the housing 1 is provided on the other long side edge of the notch 31. The first flanging 41 and the second flanging 42 clamp the lead screw transmission member 2.

[0045] The setting of the first flanging 41 and the second flanging 42 increases the contact area. That is to say, the first flanging 41 and the second flanging 42 clamp the lead screw transmission member 2, and the contact surfaces of the lead screw transmission member 2 with the first flanging 41 and the second flanging 42 are larger, and the sealing effect is better.

[0046] Furthermore, first magnetic attraction structures are correspondingly provided on the surfaces of the first flanging 41 and the second flanging 42 facing each other, so that the first flanging 41 and the second flanging 42 are magnetically connected.

[0047] When the lead screw transmission member 2 moves to a certain position of the notch 31, this position gradually expands, and when the lead screw transmission member 2 leaves, this position closes, and under the action of the first magnetic attraction structure, it closes more tightly, thus achieving complete sealing.

[0048] Specifically, the first magnetic attraction structure includes a first magnet 51 provided on the first flanging 41 and extending along the length direction of the notch 31; the first magnetic attraction structure includes a second magnet 52 provided on the second flanging 42 and extending along the length direction of the notch 31.

[0049] Both the first magnet 51 and the second magnet 52 can be in the shape of a sheet, increasing the magnetic attraction area and the suction force to ensure that the first flanging 41 and the second flanging 42 are attracted together. Of course, it is also possible to provide a plurality of strip-shaped first magnets 51 and second magnets 52.

[0050] Such as Figure 4 - Figure 6 As shown, the lead screw module further includes a protection box 6 and a connecting arm 7. The protection box 6 is provided outside the housing 1. An installation groove extending along the movement direction of the lead screw transmission member 2 is provided on the protection box 6, and the installation groove penetrates the inner and outer walls of the protection box 6; a second elastic seal 8 is provided in the installation groove, and an opening extending along the movement direction of the lead screw transmission member 2 is provided on the second elastic seal 8; the connecting arm 7 is connected to the lead screw transmission member 2, and the connecting portion of the connecting arm 7 is located outside the protection box 6, and the connecting portion is used for connecting with the lifting housing of the range hood. The connecting arm 7 moves in the opening; the width of the opening is smaller than the width of the installation groove.

[0051] The protection box 6 is provided outside the housing 1. The housing 1 plays a primary protection role, while the protection box 6 plays a secondary protection role, further reducing the pollution of the lead screw by oil stains. The connecting arm 7 is connected to the lead screw transmission member 2, and they have the same motion state. The connecting arm 7 penetrates through the second elastic seal 8 provided on the protection box 6, which is the same as the setting principle of the first elastic seal 3. The width of the opening is smaller than the width of the installation groove, and the second elastic seal 8 can block the installation groove, thereby reducing the amount of oil fume entering the protection box 6.

[0052] In the width direction of the opening, the length value of the connecting arm 7 in the width direction of the opening is greater than or equal to the width value of the opening. That is to say, in the natural state, the two long sides of the opening clamp the opposite side walls of the connecting arm 7. When the connecting arm 7 moves to a certain position of the opening, this position gradually expands, and when the connecting arm 7 leaves, this position closes, thus achieving sealing.

[0053] Along the length direction of the opening, a third flanging 43 that is folded outward to the outside of the protection box 6 is provided on one long side edge of the opening, and a fourth flanging 44 that is folded outward to the outside of the protection box 6 is provided on the other long side edge of the opening. The third flanging 43 and the fourth flanging 44 clamp the connecting arm 7.

[0054] like Figure 6 As shown, the provision of the third flange 43 and the fourth flange 44 increases the contact area, that is, the third flange 43 and the fourth flange 44 clamp the connecting arm 7, and the contact surface between the connecting arm 7 and the third flange 43 and the fourth flange 44 is larger, and the sealing effect is better.

[0055] A second magnetic attraction structure is correspondingly disposed on the surfaces of the third flange 43 and the fourth flange 44 that face each other, so that the third flange 43 and the fourth flange 44 are magnetically connected.

[0056] When the connecting arm 7 moves to a certain position of the opening, the position is gradually expanded, and when the connecting arm 7 leaves, the position is closed, and under the action of the second magnetic attraction structure, the closure is tighter, thereby achieving complete sealing.

[0057] The second magnetic attraction structure includes a third magnet 53 disposed on the third flange 43 and extending along the length direction of the opening; the second magnetic attraction structure includes a fourth magnet 54 disposed on the fourth flange 44 and extending along the length direction of the opening.

[0058] The third magnet 53 and the fourth magnet 54 can both be in sheet shape, so that the magnetic attraction area is increased, and the attraction force is increased to ensure that the third flange 43 and the fourth flange 44 are attracted together. Of course, a plurality of bar-shaped third magnets 53 and fourth magnets 54 can also be provided.

[0059] The lifting range hood provided by the utility model includes the above-mentioned screw rod module. Since the lifting range hood provided by the utility model uses the above-mentioned screw rod module, the lifting range hood provided by the utility model also has the advantages of the screw rod module.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A screw module, characterized in that: include: A housing (1), a screw transmission member (2), and a first elastic sealing member (3), wherein the housing (1) is provided with a transmission groove extending along the movement direction of the screw transmission member (2), and the transmission groove penetrates the inner and outer walls of the housing (1); The first elastic sealing member (3) is installed in the transmission groove; the first elastic sealing member (3) is provided with a notch (31) extending along the movement direction of the screw transmission member (2), and the screw transmission member (2) moves in the notch (31); The width of the notch (31) is smaller than the width of the transmission groove.

2. The screw rod module according to claim 1, characterized in that: In the width direction of the slot (31), the length value of the screw transmission member (2) along the width direction of the slot (31) is greater than or equal to the width value of the slot (31).

3. The screw rod module according to claim 2, characterized in that: Along the length direction of the notch (31), a first flange (41) is provided on one long side of the notch (31) and is folded toward the outside of the housing (1), and a second flange (42) is provided on the other long side of the notch (31) and is folded toward the outside of the housing (1), and the first flange (41) and the second flange (42) clamp the screw transmission component (2).

4. The screw rod module according to claim 3, characterized in that: A first magnetic attraction structure is correspondingly arranged on the surfaces of the first flange (41) and the second flange (42) facing each other, so that the first flange (41) and the second flange (42) are magnetically connected.

5. The screw rod module according to claim 4, characterized in that: The first magnetic attraction structure comprises a first magnet (51) which is arranged on the first flange (41) and extends along the length direction of the slot (31); The first magnetic attraction structure comprises a second magnet (52) which is arranged on the second flange (42) and extends along the length direction of the slot (31).

6. The screw module according to any one of claims 1 to 5, characterized in that: It also comprises a protection box (6) and a connecting arm (7), wherein the protection box (6) is arranged outside the housing (1), and the protection box (6) is provided with a mounting groove extending along the moving direction of the screw transmission member (2), and the mounting groove passes through the inner and outer walls of the protection box (6); A second elastic sealing member (8) is arranged in the installation groove, and an opening extending along the movement direction of the screw transmission member (2) is arranged on the second elastic sealing member (8); The connecting arm (7) is connected to the screw transmission member (2), and a connecting portion of the connecting arm (7) is located outside the protection box (6), the connecting portion is used to be connected to the lifting shell of the range hood, and the connecting arm (7) moves in the opening; The width of the opening is smaller than the width of the mounting groove.

7. The screw rod module according to claim 6, characterized in that: In the width direction of the opening, the length of the connecting arm (7) along the width direction of the opening is greater than or equal to the width of the opening.

8. The screw rod module according to claim 7, characterized in that: Along the length direction of the opening, a third flange (43) folded toward the outside of the protection box (6) is provided on one long side of the opening, and a fourth flange (44) folded toward the outside of the protection box (6) is provided on the other long side of the opening, and the third flange (43) and the fourth flange (44) clamp the connecting arm (7).

9. The screw rod module according to claim 8, characterized in that: A second magnetic attraction structure is correspondingly arranged on the surfaces of the third flange (43) and the fourth flange (44) facing each other, so that the third flange (43) and the fourth flange (44) are magnetically connected.

10. A lifting range hood, characterized in that: It comprises the screw module as described in any one of claims 1 to 9.

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