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 telescopic belt mechanism, 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 lead screw transmission piece moves in the transmission groove. The telescopic belt mechanism is connected with the shell and located at one end of the transmission groove. The telescopic belt mechanism comprises a box body and a shielding belt which is telescopic relative to the box body, one end of the shielding belt is connected with the box body, the other end of the shielding belt is connected with the lead screw transmission part, and the shielding belt is used for shielding the transmission groove after being pulled out by the lead screw transmission part.

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 smoke extraction effect, many methods have been adopted for the range hoods on the market. One of them is to make the smoke inlet movable. When not cooking, the smoke inlet is hidden inside the cavity. When cooking, the smoke inlet moves to make the smoke inlet closer to the smoke source, suck away the oil fume, and thus improve the smoke extraction effect.

[0003] However, a problem is brought at the same time. During the descending process of the smoke inlet assembly, 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 condensate oil accumulation. After cooking, the oil solidifies after condensation, which easily causes the lead screw to be blocked by the solidified oil stains or impurities and cannot be driven. 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 in the existing lead screw module 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 telescopic belt mechanism. A transmission groove extending along the movement direction of the lead screw transmission member is provided on the housing, and the transmission groove penetrates through the inner and outer walls of the housing; the lead screw transmission member moves in the transmission groove;

[0006] The telescopic belt mechanism is connected to the housing and is located at one end of the transmission groove; the telescopic belt mechanism includes a box body and a shielding belt that is telescopic relative to the box body. One end of the shielding belt is connected to the box body, and the other end is connected to the lead screw transmission member. The shielding belt is used to shield the transmission groove after being pulled out by the lead screw transmission member.

[0007] Furthermore, an elastic winding mechanism is arranged inside the telescopic belt mechanism. The shielding belt is connected to the elastic winding mechanism, and the elastic winding mechanism is used to recover and wind the shielding belt into the box body.

[0008] Furthermore, the elastic winding mechanism includes a support ring and a spring piece. The support ring is rotatably connected to the box body. One end of the spring piece is connected to the support ring, and the other end is connected to the shielding belt.

[0009] Furthermore, along the length direction of the shielding belt, a plurality of creases are provided on the shielding belt, and the folding directions of two adjacent creases are opposite, so that the shielding belt can be folded and stored in the box body.

[0010] Furthermore, the shielding belt is made of a ferromagnetic material, and two strip magnets are arranged on the housing. The strip magnets extend along the length direction of the transmission groove, and the two strip magnets are respectively located on both sides of the transmission groove.

[0011] Further, the bottom end of the outer shell is open, and the lead screw module further includes a base docked with the opening; the telescopic belt mechanism is located at one end of the transmission groove away from the base.

[0012] The lead screw module further includes a motor located at the top end of the outer shell.

[0013] Further, an oil baffle is provided on the upper surface of the base to block the flow of oil stains towards the connection gap between the outer shell and the base.

[0014] An oil leakage hole is also provided on the base, and the oil leakage hole is located inside the oil baffle.

[0015] Further, the lead screw module further includes a lead screw. A boss is provided on the base inside the oil baffle, and a positioning hole is provided on the top surface of the boss. The lower end of the lead screw is inserted into the positioning hole.

[0016] Further, the top surface of the boss is higher than the top surface of the oil baffle.

[0017] In a second aspect, a lifting range hood provided by the present utility model includes the above-mentioned lead screw module.

[0018] The present utility model at least has the following advantages or beneficial effects:

[0019] The lead screw module provided by the present utility model includes: an outer shell, a lead screw transmission member, and a telescopic belt mechanism. 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 lead screw transmission member moves in the transmission groove; the telescopic belt mechanism is connected to the outer shell and is located at one end of the transmission groove; the telescopic belt mechanism includes a box body and a shielding belt that is telescopic relative to the box body. One end of the shielding belt is connected to the box body, and the other end is connected to the lead screw transmission member. The shielding belt is used to block the transmission groove after being pulled out by the lead screw transmission member.

[0020] After the lead screw module works, the lead screw transmission member moves along the transmission groove. The lead screw transmission member can pull the shielding belt to move together. The pulled-out shielding belt can gradually cover the transmission groove. After the shielding belt covers the transmission groove, it can play a role in blocking oil, reducing the entry of oil stains into the outer shell, and the lead screw can be less contaminated by oil stains.

[0021] The lifting range hood provided by the present utility model includes the above-mentioned lead screw module. Since the lifting range hood provided by the present utility model incorporates the above-mentioned lead screw module, the lifting range hood provided by the present utility model also has the advantages of the lead screw module. Description of the Drawings

[0022] 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 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.

[0023] Figure 1 Schematic diagram of the lead screw module provided in Embodiment 1 of the present utility model (the lead screw transmission member is at the upper end);

[0024] Figure 2 For Figure 1 Partial enlarged view of position A in

[0025] Figure 3 Schematic diagram of the lead screw module provided in Embodiment 1 of the present utility model (the lead screw transmission member is at the lower end);

[0026] Figure 4 For Figure 3 Partial enlarged view of position B in

[0027] Figure 5 Exploded view of the telescopic belt mechanism of the lead screw module provided in Embodiment 1 of the present utility model;

[0028] Figure 6 Schematic diagram of the lifting range hood equipped with the lead screw module provided in Embodiment 1 of the present utility model;

[0029] Figure 7 For Figure 6 Partial enlarged view of position C in

[0030] Figure 8 For Figure 6 Partial enlarged view of position D in

[0031] Figure 9 Cross-sectional view of the lead screw module provided in Embodiment 1 of the present utility model;

[0032] Figure 10 Cross-sectional view of the base of the lead screw module provided in Embodiment 1 of the present utility model;

[0033] Figure 11 Schematic diagram of the lead screw module provided in Embodiment 2 of the present utility model (the lead screw transmission member is at the upper end);

[0034] Figure 12 Schematic diagram of the lead screw module provided in Embodiment 2 of the present utility model (the lead screw transmission member is at the lower end);

[0035] Figure 13Side view of the extended state of the shielding belt of the lead screw module provided in Embodiment 2 of the present utility model;

[0036] Figure 14 Side view of the retracted state of the shielding belt of the lead screw module provided in Embodiment 2 of the present utility model.

[0037] Icon: 1 - housing; 11 - drive groove; 12 - bar magnet; 2 - motor; 3 - lead screw; 4 - lead screw drive member;

[0038] 5 - telescopic belt mechanism; 51 - shielding belt; 52 - support ring; 53 - elastic piece; 54 - fixed shaft; 55 - box body;

[0039] 61 - fixed housing; 62 - movable inner housing; 63 - connecting arm; 64 - protection box; 7 - base; 71 - oil baffle; 72 - oil leakage hole; 73 - positioning hole. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below 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. The components of the embodiments of the present utility model described and illustrated herein generally can be arranged and designed in a variety of different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0042] 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 need to be further defined and explained in subsequent drawings.

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "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 utility model is habitually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component 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 utility model. In addition, terms such as "first", "second", "third", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0044] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, 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.

[0045] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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 utility model can be understood according to specific situations.

[0046] Embodiment 1

[0047] The lead screw module provided by the present utility model can be, but is not limited to, applied to a lifting range hood, and other kitchen appliances that require linear drive can also be used.

[0048] As Figure 1 - Figure 4 As shown, the lead screw module includes: a housing 1, a motor 2, a lead screw 3, a lead screw transmission member 4, and a telescopic belt mechanism 5. The motor 2 and the lead screw 3 are both located inside the housing 1. The motor 2 drives the lead screw 3 to rotate, and the lead screw transmission member 4 connected to the lead screw 3 performs a linear motion along the length direction of the lead screw 3.

[0049] As Figure 2 As shown, a transmission groove 11 extending along the movement direction of the lead screw transmission member 4 is provided on the housing 1. The transmission groove 11 penetrates the inner and outer walls of the housing 1. The transmission groove 11 is used to avoid the lead screw transmission member 4, and the lead screw transmission member 4 moves in the transmission groove 11.

[0050] As Figure 5As shown, the telescopic belt mechanism 5 is connected to the outer shell 1 and is located at the upper end of the transmission groove 11. The telescopic belt mechanism 5 includes a box body 55 and a shielding belt 51 that is telescopic relative to the box body 55. The box body 55 is fixed relative to the outer shell 1. One end of the shielding belt 51 is connected to the box body 55, and the other end is connected to the screw drive member 4. The shielding belt 51 is used to shield the transmission groove 11 after it is pulled out by the screw drive member 4. When the screw drive member 4 moves downward to the lowest position, the shielding belt 51 shields the transmission groove 11, and the part of the transmission groove 11 above the screw drive member 4 is shielded. Conversely, when the screw drive member 4 moves upward, the shielding belt 51 can be retracted into the box body 55.

[0051] After the screw module works, the screw drive member 4 moves along the transmission groove 11. The screw drive member 4 can pull the shielding belt 51 to move together, and the pulled-out shielding belt 51 can gradually cover the transmission groove 11. After the shielding belt 51 covers the transmission groove 11, it can play a role in blocking oil, reducing the entry of oil stains into the outer shell 1, and the screw 3 can be less contaminated by oil stains.

[0052] Specifically, as Figure 6 - Figure 8 shown, when the screw module is applied to a lifting range hood, the screw module is fixedly connected to the fixed outer shell 61. The screw drive member 4 is connected to the movable inner shell 62 through a connecting arm 63, thereby driving the movable inner shell 62 to move up and down relative to the fixed outer shell 61. When the movable inner shell 62 moves to the lowest position, the smoke inlet is closest to the smoke source, and the range hood starts to work. The oil fume first enters the movable inner shell 62, then enters the fixed outer shell 61, and finally is discharged. At this time, if the transmission groove 11 is not shielded, the oil fume flowing through the fixed outer shell 61 will more easily enter the inner part of the outer shell 1. After adopting the screw module in this embodiment, the screw 3 is not easily contaminated by oil stains and has a longer service life.

[0053] In this embodiment, an elastic winding mechanism is provided inside the telescopic belt mechanism 5. The shielding belt 51 is connected to the elastic winding mechanism, and the elastic winding mechanism is used to recover and wind the shielding belt 51 into the box body 55.

[0054] As Figure 5 shown, the principle of the elastic winding mechanism is similar to that of a tape measure and can automatically wind up after the external force is removed. That is to say, when the screw drive member 4 moves towards the box body 55, the shielding belt 51 can automatically wind into the box body 55. Specifically, the elastic winding mechanism includes a support ring 52 and a spring piece 53. The support ring 52 is rotatably connected to the box body 55. One end of the spring piece 53 is connected to the support ring 52, and the other end is connected to the shielding belt 51. After the shielding belt 51 is pulled out, the spring piece 53 undergoes elastic deformation, so that the spring piece 53 has a tendency to pull the shielding belt 51 back. A fixed shaft 54 can be provided on the box body 55, and the hollow area of the support ring 52 is rotatably connected to the fixed shaft 54.

[0055] like Figure 9 As shown, in order to further increase the shielding effect of the shielding belt 51. The shielding belt 51 can be made of ferromagnetic material, and two bar magnets 12 are arranged on the housing 1, the bar magnets 12 extend along the length direction of the transmission slot 11, and the two bar magnets 12 are respectively located on both sides of the transmission slot 11. When the shielding belt 51 is stretched, the magnets can adsorb the shielding belt 51 to the housing 1 and fit it tightly, thereby further reducing the oil smoke passing through the transmission slot 11.

[0056] like Figure 10 As shown, the bottom end of the housing 1 is open, and the screw module also includes a base 7 docking with the opening; the telescopic belt mechanism 5 is located at the end of the transmission groove 11 away from the base 7; the screw module also includes a motor 2, and the motor 2 is located at the top of the housing 1. The motor 2 is located at a higher end, which can reduce the oil pollution from contaminating the motor 2.

[0057] An oil retaining edge 71 is provided on the upper surface of the base 7 to prevent oil from flowing to the connection gap between the housing 1 and the base 7 ; an oil leakage hole 72 is also provided on the base 7 , and the oil leakage hole 72 is located inside the oil retaining edge 71 .

[0058] Although the transmission groove 11 is sealed, a small amount of oil will still enter the position of the screw rod 3. Due to the effect of gravity, this part of the oil will flow downward and fall into the base 7. Because the base 7 is provided with an oil retaining edge 71 and an oil leakage hole 72, the oil falling from top to bottom into the oil retaining edge 71 will flow out from the oil leakage hole 72, thereby preventing the oil from crossing the oil retaining edge 71 and seeping out from the connecting gap between the outer shell 1 and the base 7.

[0059] The screw rod module also includes a screw rod 3 . A boss located inside the oil retaining edge 71 is provided on the base 7 . A positioning hole 73 is provided on the top surface of the boss. The lower end of the screw rod 3 is inserted into the positioning hole 73 .

[0060] A rotating shaft is provided at the lower end of the screw rod 3. The diameter of the rotating shaft is smaller than that of the screw rod 3. The rotating shaft extends into the positioning hole 73. On the one hand, it can make the rotation of the screw rod 3 more stable and reduce shaking. On the other hand, the outer wall of the positioning hole 73 can also play the role of oil barrier to prevent oil stains from entering the rotation center position of the rotating shaft.

[0061] It should be noted that the top surface of the boss is higher than the top surface of the oil retaining edge 71, that is, when the oil leakage hole 72 is blocked, as the oil stains increase, the oil stains will overflow the oil retaining edge 71 and will not enter the positioning hole 73, thereby ensuring the normal operation of the screw 3 motor 2.

[0062] Example 2

[0063] The difference from the first embodiment is that the retracting and extending methods of the shielding belt 51 are different between the first embodiment and the second embodiment.

[0064] As Figure 11 - Figure 14 shown, in this embodiment, along the length direction of the shielding belt 51, a plurality of creases are provided on the shielding belt 51, and the folding directions of two adjacent creases are opposite, similar to a continuous "W" shape. It can be unfolded into a belt shape or stacked and stored together, so that the shielding belt 51 can be folded and stored in the box body 55 conveniently.

[0065] It should be noted that the lead screw module is installed in the protection box 64, and the protection box 64 can also play a certain limiting role on the shielding belt 51, preventing it from protruding outwards in an arched shape during recycling and being unable to be folded into the box body 55.

[0066] The lifting range hood provided by the present utility model includes the above-mentioned lead screw module. Since the lifting range hood provided by the present utility model incorporates the above-mentioned lead screw module, the lifting range hood provided by the present utility model also has the advantages of the lead screw module.

[0067] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A lead screw module, characterized in that, Comprising: A housing (1), a lead screw drive member (4), and a telescopic belt mechanism (5). A drive groove (11) extending in the movement direction of the lead screw drive member (4) is provided on the housing (1), and the drive groove (11) penetrates through the inner and outer walls of the housing (1); the lead screw drive member (4) moves within the drive groove (11). The telescopic belt mechanism (5) is connected to the housing (1) and is located at one end of the drive groove (11); the telescopic belt mechanism (5) includes a box body (55) and a shielding belt (51) that is telescopic relative to the box body (55). One end of the shielding belt (51) is connected to the box body (55), and the other end is connected to the lead screw drive member (4). The shielding belt (51) is used to shield the drive groove (11) after being pulled out by the lead screw drive member (4).

2. The lead screw module according to claim 1, characterized in that, An elastic winding mechanism is provided inside the telescopic belt mechanism (5). The shielding belt (51) is connected to the elastic winding mechanism, and the elastic winding mechanism is used to recover and wind the shielding belt (51) into the inside of the box body (55).

3. The lead screw module according to claim 2, wherein, The elastic winding mechanism includes a support ring (52) and a spring piece (53). The support ring (52) is rotatably connected to the box body (55), one end of the spring piece (53) is connected to the support ring (52), and the other end is connected to the shielding belt (51).

4. The lead screw module according to claim 1, wherein, Along the length direction of the shielding belt (51), a plurality of creases are provided on the shielding belt (51), and the folding directions of adjacent two creases are opposite, so that the shielding belt (51) can be folded and stored in the box body (55).

5. The lead screw module according to claim 1, characterized in that, The shielding belt (51) is made of a ferromagnetic material. Two bar magnets (12) are provided on the housing (1). The bar magnets (12) extend along the length direction of the drive groove (11), and the two bar magnets (12) are respectively located on both sides of the drive groove (11).

6. The lead screw module according to any one of claims 1-5, characterized in that, The bottom end of the housing (1) is open, and the lead screw module further includes a base (7) docked with the open end; the telescopic belt mechanism (5) is located at one end of the drive groove (11) away from the base (7). The lead screw module further includes a motor (2), and the motor (2) is located at the top end of the housing (1).

7. The lead screw module according to claim 6, characterized in that, An oil blocking edge (71) is provided on the upper surface of the base (7) for blocking oil from flowing into the connection gap between the housing (1) and the base (7). An oil leakage hole (72) is further provided on the base (7), and the oil leakage hole (72) is located inside the oil blocking edge (71).

8. The lead screw module according to claim 7, characterized in that, The lead screw module further includes a lead screw (3). A boss is provided on the base (7) inside the oil blocking edge (71), and a positioning hole (73) is provided on the top surface of the boss. The lower end of the lead screw (3) is inserted into the positioning hole (73).

9. The lead screw module according to claim 8, wherein, The top surface of the boss is higher than the top surface of the oil blocking edge (71).

10. An elevating range hood, characterized in that, Including the lead screw module according to any one of claims 1 - 9.

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