Smoke gathering plate limiting structure and range hood

Abstract

The utility model discloses a smoke gathering plate limiting structure and a range hood, and belongs to the technical field of kitchen appliances. The smoke gathering plate limiting structure comprises a rotating hook, a first limiting unit and a second limiting unit, a first hook arm of the rotating hook is connected to a range hood shell, a second hook arm of the rotating hook is connected to a smoke gathering plate, and the output end of a driving assembly is connected to the rotating hook; one end of the first limiting unit is movably connected with the rotating hook; one end of the second limiting unit is movably connected with the other end of the first limiting unit, and the other end of the second limiting unit is connected with the range hood shell; the second limiting unit is provided with a first limiting surface and a second limiting surface, and the first limiting unit can be matched with the first limiting surface and the second limiting surface to limit the completely-opened position and the completely-closed position of the smoke gathering plate. According to the smoke gathering plate limiting structure, on the premise that the stroke of the smoke gathering plate is controlled without depending on the design stroke tolerance and assembly error of a push rod motor, opening and closing limiting of the smoke gathering plate is achieved, the structure is simple, and assembly is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a limiting structure for a smoke collecting plate and a range hood. Background Art

[0002] A range hood is an electrical appliance widely used in kitchens to discharge the oil fumes generated during cooking. As Figure 1 shown, a range hood generally includes a range hood housing 100' and a smoke collecting plate 200'. An air inlet is formed on the range hood housing 100'. When the range hood is not working, the smoke collecting plate 200' is in a closed state to block the air inlet; when the range hood is working, the smoke collecting plate 200' is in an open state where it flips outward to open the air inlet. At this time, the smoke collecting plate 200' can play the role of collecting smoke.

[0003] As Figures 2 to 4 shown, at present, the smoke collecting plate 200' of some side suction range hoods on the market is connected to the range hood housing 100' through a rotating hook 400'. A hook seat 101' is provided on the range hood housing 100'. The rotating hook 400' is rotatably connected to the hook seat 101'. The opening and closing of the smoke collecting plate 200' are realized by the direct pushing method of a push rod motor 300'. This direct pushing scheme completely depends on the design tolerance and processing error of the stroke of the push rod motor 300' for controlling the opening and closing degree of the smoke collecting plate 200'. The opening and closing of the smoke collecting plate 200' lack opening and closing limits. Especially when the smoke collecting plate 200' is closed, in order to ensure that the smoke collecting plate 200' can be closed in place, when designing the push rod, the stroke of the push rod is generally designed to be a stroke value greater than the required stroke for closing the smoke collecting plate 200', resulting in local deformation of the part of the smoke collecting plate 200' hinged to the push rod.

[0004] Therefore, it is urgent to design a limiting structure for a smoke collecting plate and a range hood to solve the above technical problems. Content of the Utility Model

[0005] An object of the utility model is to provide a limiting structure for a smoke collecting plate, which realizes the opening and closing limits of the smoke collecting plate.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A limiting structure for a smoke collecting plate, comprising:

[0008] A rotating hook, including a first hook arm and a second hook arm arranged at an angle. The first hook arm is connected to the range hood housing, the second hook arm is connected to the smoke collecting plate, and the output end of a driving component is connected to the rotating hook;

[0009] A first limiting unit, one end of which is movably connected to the rotating hook;

[0010] The second limiting unit, one end of which is movably connected to the other end of the first limiting unit, and the other end of the second limiting unit is connected to the range hood housing;

[0011] The second limiting unit is provided with a first limiting surface and a second limiting surface. The first limiting unit can cooperate with the first limiting surface to limit the fully opened position of the smoke collecting plate, and the first limiting unit can also cooperate with the second limiting surface to limit the fully closed position of the smoke collecting plate.

[0012] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the smoke collecting plate limiting structure further includes a connecting piece. One end of the connecting piece is rotatably connected to the output end of the driving assembly, and the other end is fixedly connected to the rotating hook.

[0013] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the connecting piece is arranged at the joint of the first hook arm and the second hook arm. The connecting piece includes three connecting parts, and the three connecting parts are arranged in a triangular shape. One of the connecting parts is rotatably connected to the output end of the driving assembly, and the other two connecting parts are respectively fixedly connected to the first hook arm and the second hook arm.

[0014] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the first limiting unit includes a limiting link, and the second limiting unit includes a limiting support. One end of the limiting link is rotatably connected to the limiting support, and the other end is rotatably connected to the rotating hook. The first limiting surface and the second limiting surface are provided on the limiting support, and the limiting link can cooperate with the first limiting surface and the second limiting surface respectively.

[0015] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the limiting support is provided with a limiting protrusion, the limiting protrusion has the first limiting surface and the second limiting surface, and the limiting link is provided with a clamping protrusion, and the clamping protrusion can respectively abut against the first limiting surface and the second limiting surface.

[0016] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the limiting support is provided with two limiting protrusions. The two opposite surfaces of the two limiting protrusions are respectively the first limiting surface and the second limiting surface. The limiting link is provided with one clamping protrusion, and the clamping protrusion is located between the two limiting protrusions and can respectively abut against the first limiting surface and the second limiting surface; or,

[0017] One of the limiting bumps is provided on the limiting support. The two opposite faces of the limiting bump are respectively the first limiting face and the second limiting face. Two of the clamping protrusions are provided on the limiting connecting rod. The clamping protrusions protrude from the installation plane of the limiting connecting rod, so that one of the clamping protrusions can abut against the first limiting face and the other clamping protrusion can abut against the second limiting face.

[0018] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, a rotating groove is provided on the limiting support, and a first rotating shaft is provided on the limiting connecting rod. The first rotating shaft is placed in the rotating groove and is rotationally matched with the rotating groove. Two groove walls of the rotating groove respectively extend outwards to form the first limiting face and the second limiting face. A positioning block is provided on the first rotating shaft. The positioning block rotates with the first rotating shaft and can abut against the first limiting face or the second limiting face.

[0019] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the limiting connecting rod is a U-shaped connecting rod, including two oppositely arranged straight arms and the first rotating shaft arranged between the two straight arms; or,

[0020] The limiting connecting rod is an annular connecting rod, and one of the rods in the annular connecting rod is the first rotating shaft.

[0021] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the smoke collecting plate limiting structure further includes a connecting link. One end of the connecting link is rotatably connected to the limiting connecting rod, and the other end of the connecting link is rotatably connected to the rotating hook.

[0022] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, the first limiting unit includes a slider assembly, the second limiting unit includes a slideway, the slider assembly is slidably connected to the slideway, the slider assembly is also rotatably connected to the rotating hook, the first limiting face and the second limiting face are provided on the slideway, and the slider assembly can cooperate with the first limiting face and the second limiting face respectively.

[0023] As a preferred technical solution of the above-mentioned smoke collecting plate limiting structure, at least one strip-shaped groove is opened along the length direction of the slideway. The two ends of the strip-shaped groove in the length direction are respectively the first limiting face and the second limiting face. The slider assembly includes a slider and at least one slide rod. The slider is slidably connected to the slideway. The slide rod is arranged on the slider. The slide rod is slidably matched with the strip-shaped groove and can abut against the first limiting face or the second limiting face. A second rotating shaft is provided on the slider. The second rotating shaft is rotatably connected to the rotating hook through a connecting link.

[0024] Another object of the present utility model is to provide an oil fume exhaust machine, which realizes the opening and closing limit of the smoke collecting plate.

[0025] To achieve this object, the present utility model also adopts the following technical solutions:

[0026] An oil fume exhaust machine includes the above-mentioned smoke collecting plate limiting structure.

[0027] The smoke collecting plate limiting structure disclosed by the present utility model includes a rotating hook, a first limiting unit, and a second limiting unit. The rotating hook includes a first hook arm and a second hook arm arranged at an angle. The first hook arm is connected to the smoke machine housing, and the second hook arm is connected to the smoke collecting plate. The output end of the driving component is connected to the rotating hook. One end of the first limiting unit is movably connected to the rotating hook; one end of the second limiting unit is movably connected to the other end of the first limiting unit, and the other end of the second limiting unit is connected to the smoke machine housing; the second limiting unit is provided with a first limiting surface and a second limiting surface. The first limiting unit can cooperate with the first limiting surface to limit the fully opened position of the smoke collecting plate, and the first limiting unit can also cooperate with the second limiting surface to limit the fully closed position of the smoke collecting plate. Without relying on the stroke tolerance and assembly error of the push rod motor to control the stroke of the smoke collecting plate, this smoke collecting plate limiting structure realizes the opening and closing limit of the smoke collecting plate, and has a simple structure and is easy to assemble.

[0028] The oil fume exhaust machine disclosed by the present utility model includes the above-mentioned smoke collecting plate limiting structure. Without relying on the stroke tolerance and assembly error of the push rod motor to control the stroke of the smoke collecting plate, this oil fume exhaust machine realizes the opening and closing limit of the smoke collecting plate, and has a simple structure and is easy to assemble. Description of the Drawings

[0029] Figure 1 is a schematic structural view of an oil fume exhaust machine provided by the prior art;

[0030] Figure 2 is a side view of the oil fume exhaust machine provided by the prior art when the smoke collecting plate is opened;

[0031] Figure 3 is a side sectional view of the oil fume exhaust machine provided by the prior art when the smoke collecting plate is closed;

[0032] Figure 4 is a side sectional view of the oil fume exhaust machine provided by the prior art when the smoke collecting plate is opened;

[0033] Figure 5 is a schematic structural view of the oil fume exhaust machine provided by Embodiment 1 of the present utility model;

[0034] Figure 6 is a side view of the oil fume exhaust machine provided by Embodiment 1 of the present utility model when the smoke collecting plate is fully opened;

[0035] Figure 7 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the first embodiment of the present utility model is completely closed;

[0036] Figure 8 It is a partial structural schematic diagram when the smoke collecting plate of the range hood provided in the first embodiment of the present utility model is completely closed;

[0037] Figure 9 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the first embodiment of the present utility model is opened by 1 / 4;

[0038] Figure 10 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the first embodiment of the present utility model is opened by 1 / 2;

[0039] Figure 11 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the first embodiment of the present utility model is opened by 3 / 4;

[0040] Figure 12 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the first embodiment of the present utility model is completely opened;

[0041] Figure 13 It is a structural schematic diagram of a limit support provided in the first embodiment of the present utility model;

[0042] Figure 14 It is a structural schematic diagram of a limit link provided in the first embodiment of the present utility model;

[0043] Figure 15 It is a structural schematic diagram of the limit link, limit support and connecting link when the smoke collecting plate is completely closed provided in the first embodiment of the present utility model;

[0044] Figure 16 It is a structural schematic diagram of the limit link, limit support and connecting link when the smoke collecting plate is completely opened provided in the first embodiment of the present utility model;

[0045] Figure 17 It is a structural schematic diagram of another limit link provided in the first embodiment of the present utility model Figure 1 ;

[0046] Figure 18 It is a structural schematic diagram of another limit link provided in the first embodiment of the present utility model Figure 2 ;

[0047] Figure 19 It is a structural schematic diagram of another limit support provided in the first embodiment of the present utility model;

[0048] Figure 20 It is a partial structural schematic diagram when the smoke collecting plate is completely closed provided in the first embodiment of the present utility model;

[0049] Figure 21 is Figure 20 Partial structural schematic diagram of the middle limiting connecting rod and the limiting support

[0050] Figure 22 is the partial structural schematic diagram when the smoke collecting plate provided in the first embodiment of the present utility model is fully opened

[0051] Figure 23 is Figure 22 Partial structural schematic diagram of the middle limiting connecting rod and the limiting support

[0052] Figure 24 is the structural schematic diagram of a limiting connecting rod provided in the second embodiment of the present utility model

[0053] Figure 25 is the structural schematic diagram of another limiting connecting rod provided in the second embodiment of the present utility model

[0054] Figure 26 is the structural schematic diagram of the limiting support provided in the second embodiment of the present utility model

[0055] Figure 27 is the partial structural schematic diagram when the smoke collecting plate of the range hood provided in the second embodiment of the present utility model is fully closed

[0056] Figure 28 is the side sectional view when the smoke collecting plate of the range hood provided in the second embodiment of the present utility model is fully closed

[0057] Figure 29 is the side sectional view when the smoke collecting plate of the range hood provided in the second embodiment of the present utility model is fully opened

[0058] Figure 30 is the structural schematic diagram of the connecting link, the slider assembly and the slideway provided in the third embodiment of the present utility model

[0059] Figure 31 is the structural schematic diagram of the slideway provided in the third embodiment of the present utility model

[0060] Figure 32 is the structural schematic diagram of the slider assembly provided in the third embodiment of the present utility model

[0061] Figure 33 is the structural schematic diagram of the sliding provided in the third embodiment of the present utility model

[0062] Figure 34 is the structural schematic diagram of the slide bar provided in the third embodiment of the present utility model

[0063] Figure 35It is a partial structural schematic diagram when the smoke collecting plate provided in the third embodiment of the present utility model is fully opened;

[0064] Figure 36 It is a side cross-sectional view when the smoke collecting plate provided in the third embodiment of the present utility model is fully closed;

[0065] Figure 37 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the third embodiment of the present utility model is opened by 1 / 4;

[0066] Figure 38 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the third embodiment of the present utility model is opened by 1 / 2;

[0067] Figure 39 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the third embodiment of the present utility model is opened by 3 / 4;

[0068] Figure 40 It is a side cross-sectional view when the smoke collecting plate of the range hood provided in the third embodiment of the present utility model is fully opened.

[0069] In the figure:

[0070] 1, rotating hook; 2, limiting connecting rod; 3, limiting support; 4, connecting connecting rod; 5, slider assembly; 6, slideway; 7, connecting piece; 21, clamping protrusion; 22, first rotating shaft; 31, limiting protrusion; 32, rotating groove; 51, slider; 52, sliding rod; 53, second rotating shaft; 61, strip-shaped groove; 221, positioning block; 311, first limiting surface; 312, second limiting surface; 511, threaded hole; 521, threaded column;

[0071] 100, range hood housing; 101, hook seat; 102, side baffle; 103, reinforcing convex bulge; 200, smoke collecting plate; 301, push rod bracket; 302, push rod motor;

[0072] 100’, range hood housing; 101’, hook seat; 200’, smoke collecting plate; 300’, push rod motor; 400’, rotating hook. Detailed implementation manners

[0073] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model is given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0074] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0075] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0076] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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 circumstances.

[0077] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0078] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0079] Embodiment 1

[0080] As Figure 5 shown, this embodiment provides a range hood, which includes a hood housing 100 and a smoke collecting plate 200. An air inlet is formed on the hood housing 100. When the range hood is not working, the smoke collecting plate 200 is in a closed state blocking the air inlet; when the range hood is working, the smoke collecting plate 200 is in an open state that flips outward and opens the air inlet. At this time, the smoke collecting plate 200 can play the role of collecting smoke.

[0081] To achieve the opening and closing limit of the flipping of the smoke collecting plate 200, the range hood further includes a smoke collecting plate limiting structure, which is disposed between the hood housing 100 and the smoke collecting plate 200.

[0082] As Figures 6 to 8 shown, the smoke collecting plate limiting structure in this embodiment includes a rotating hook 1. The rotating hook 1 includes a first hook arm and a second hook arm. The first hook arm is connected to the hood housing 100, and the second hook arm is connected to the smoke collecting plate 200. An included angle is formed between the first hook arm and the second hook arm.

[0083] Specifically, as Figure 7 and Figure 8 shown, a hook seat 101 is provided on the hood housing 100. The first hook arm is rotatably connected to the hook seat 101 through a rotating shaft. The second hook arm is fixedly connected to the inner surface of the smoke collecting plate 200. When the rotating hook 1 rotates around the rotating shaft of the hook seat 101, it can drive the smoke collecting plate 200 to achieve flipping opening and closing. To achieve the above structure, the hook seat 101 is installed on the inner surface of the hood housing 100 close to the smoke collecting plate 200. The front end of the first hook arm is rotatably connected to the hook seat 101 and extends from the hook seat 101 towards the inside of the hood housing 100. The rear end of the second hook arm is connected to the rear end of the first hook arm and extends from this connection towards the air inlet. The front end of the second hook arm is fixedly connected to the smoke collecting plate 200. It should be noted that the "front" and "rear" directions defined here are the using directions of the range hood. The "front side" of the range hood can be understood as the side close to the user, and the "rear side" of the range hood can be understood as the side far from the user.

[0084] The first hook arm and the second hook arm can be integrally formed structures or split structures that are fixedly connected. This embodiment does not specifically limit this.

[0085] To achieve the rotation of the rotating hook 1, the range hood in this embodiment further includes a driving assembly, and the output end of the driving assembly is connected to the rotating hook 1. Specifically, the output end of the driving assembly can be connected to the first hook arm, the second hook arm, or the connection portion between the first hook arm and the second hook arm, as long as it does not interfere with the movement trajectory of the rotating hook 1.

[0086] The driving assembly includes a push rod bracket 301 and a push rod motor 302. The push rod bracket 301 is disposed on the hood housing 100. The rear end of the push rod motor 302 is mounted on the push rod bracket 301 and can rotate around the shaft on the push rod bracket 301. The telescopic rod of the push rod motor 302 is connected to the rotating hook 1.

[0087] In the prior art, the method of directly pushing the smoke collecting plate 200 by a push rod is adopted. Since the push rod motor 302 is exposed in the smoke collecting cavity and its telescopic rod needs to extend out of the hood housing 100, the telescopic rod of the push rod motor 302 is easily contaminated by oil stains, which not only affects the normal telescopic movement of the push rod but also reduces the service life of the push rod.

[0088] Therefore, in the smoke collecting plate limiting structure of this embodiment, it further includes a connecting piece 7. One end of the connecting piece 7 is rotatably connected to the output end of the driving assembly, and the other end is fixedly connected to the rotating hook 1. Specifically, the connecting piece 7 is disposed at the connection portion between the first hook arm and the second hook arm. The connecting piece 7 includes three connecting portions, and the three connecting portions are arranged in a triangular shape. One of the connecting portions is rotatably connected to the output end of the driving assembly, and the other two connecting portions are respectively fixedly connected to the first hook arm and the second hook arm. The driving assembly drives the connecting piece 7 to rotate, thereby driving the rotating hook 1 to rotate, and further pushing the smoke collecting plate 200 to flip and open and close. Specifically, the telescopic rod of the push rod motor 302 is rotatably connected to one of the connecting portions of the connecting piece 7. When the telescopic rod of the push rod motor 302 retracts, it drives the connecting piece 7 to move downward, thereby driving the rotating hook 1 to rotate forward and outward, and further pushing open the smoke collecting plate 200; when the telescopic rod of the push rod motor 302 extends, it drives the connecting piece 7 to move upward, thereby driving the rotating hook 1 to rotate backward and inward, and further pulling back the smoke collecting plate 200.

[0089] By designing the connecting piece 7 on the rotating hook 1, without adding a crank connecting rod, the push rod motor 302 can be located inside the hood housing 100, and only the second arm of the rotating hook 1 extends out of the hood housing 100 and is exposed in the smoke collecting area, avoiding the push rod motor 302 from being contaminated by oil stains.

[0090] The smoke collecting plate limiting structure in this embodiment further includes a first limiting unit and a second limiting unit. One end of the first limiting unit is movably connected to the rotating hook 1, one end of the second limiting unit is movably connected to the other end of the first limiting unit, and the other end of the second limiting unit is connected to the range hood housing 100. As Figure 9 shown, the second limiting unit is provided with a first limiting surface 311 and a second limiting surface 312. The first limiting unit can cooperate with the first limiting surface 311 to limit the fully opened position of the smoke collecting plate 200, and the first limiting unit can also cooperate with the second limiting surface 312 to limit the fully closed position of the smoke collecting plate 200. Thus, without relying on the design of the stroke tolerance and assembly error of the push rod motor 302 to control the stroke of the smoke collecting plate 200, the opening and closing limits of the smoke collecting plate 200 are achieved.

[0091] In this embodiment, the first limiting unit includes a limiting connecting rod 2, and the second limiting unit includes a limiting support 3. One end of the limiting connecting rod 2 is rotatably connected to the limiting support 3, and the other end is rotatably connected to the rotating hook 1. The limiting support 3 is provided with a first limiting surface 311 and a second limiting surface 312. The limiting connecting rod 2 can cooperate with the first limiting surface 311 and the second limiting surface 312 respectively to achieve the opening and closing limits of the smoke collecting plate 200. As Figures 9 to 12 shown, it is a schematic diagram of the movement process of the opening and closing of the smoke collecting plate in this embodiment.

[0092] As Figure 13 、 Figure 14 、 Figure 17 and Figure 19 shown, the limiting support 3 is provided with a limiting protrusion 31. The limiting protrusion 31 has a first limiting surface 311 and a second limiting surface 312. The limiting connecting rod 2 is provided with a clamping protrusion 21, and the clamping protrusion 21 can abut against the first limiting surface 311 and the second limiting surface 312 respectively.

[0093] Specifically, at least the following two solutions can achieve the above structural functions.

[0094] The first solution: as Figures 13 to 16 shown, two limiting protrusions 31 are provided on the limiting support 3 at intervals. The two opposite surfaces of the two limiting protrusions 31 are the first limiting surface 311 and the second limiting surface 312 respectively. Specifically, the first limiting surface 311 is the side surface of the upper limiting protrusion 31 facing downward, and the second limiting surface 312 is the side surface of the lower limiting protrusion 31 facing upward. The limiting connecting rod 2 is provided with a clamping protrusion 21. The clamping protrusion 21 is located between the two limiting protrusions 31 and can abut against the first limiting surface 311 and the second limiting surface 312 respectively. When the push rod motor 302 pushes the rotating hook 1 to move, the clamping protrusion 21 of the limiting connecting rod 2 moves between the two limiting protrusions 31. As Figure 15As shown, when the smoke collecting plate 200 is fully closed, the clamping protrusion 21 abuts against the second limiting surface 312 of the lower limiting protrusion 31, as Figure 16 shown, when the smoke collecting plate 200 is fully opened, the clamping protrusion 21 abuts against the first limiting surface 311 of the upper limiting protrusion 31, thereby limiting the opening and closing positions of the smoke collecting plate 200.

[0095] The second solution: As Figures 17 to 19 shown, a limiting protrusion 31 is provided on the limiting support 3. The two opposite surfaces of the limiting protrusion 31 are respectively the first limiting surface 311 and the second limiting surface 312. Specifically, the first limiting surface 311 is the lower surface, and the second limiting surface 312 is the upper surface. Two clamping protrusions 21 are provided on the limiting connecting rod 2, namely the first clamping protrusion 21 and the second clamping protrusion 21. The clamping protrusion 21 protrudes from the installation plane of the limiting connecting rod 2 to cooperate with the installation surface of the limiting support 3, so that the first clamping protrusion 21 can abut against the first limiting surface 311, and the second clamping protrusion 21 can abut against the second limiting surface 312. As Figure 20 and Figure 21 shown, when the smoke collecting plate 200 is fully closed, the second clamping protrusion 21 abuts against the second limiting surface 312 located above. As Figure 22 and Figure 23 shown, when the smoke collecting plate 200 is fully opened, the first clamping protrusion 21 abuts against the first limiting surface 311 located below.

[0096] Continue to refer to Figure 7 and Figure 8 shown, the smoke collecting plate limiting structure in this embodiment further includes a connecting link 4. One end of the connecting link 4 is rotatably connected to the limiting connecting rod 2, and the other end of the connecting link 4 is rotatably connected to the rotating hook 1. By setting the connecting link 4, the position of the rotating hook 1 is restricted and limited with the position of the limiting connecting rod 2.

[0097] To realize the installation of the second limiting unit, a side baffle 102 is provided on the smoke machine housing 100. The side baffle 102 is installed on the inner wall of the smoke machine housing 100, separating the above-mentioned smoke collecting plate limiting structure and the driving component separately, and separating the smoke collecting cavity into two relatively independent spaces. On the one hand, it can realize the installation of the second limiting unit, and on the other hand, it can also reduce the pollution of the smoke collecting plate limiting structure and the driving component by oil stains. Refer to Figure 15 and Figure 16 shown, the part of the side baffle 102 for installing the second limiting unit is thickened or provided with a reinforcing convex hull 103 to increase the structural strength here, thereby improving the installation stability of the second limiting unit. The shape of the reinforcing convex hull 103 is the same as the shape of the second limiting unit. For example, in this embodiment, the limiting support 3 is square, and the reinforcing convex hull 103 is also designed to be square.

[0098] Since the range hood in this embodiment includes the aforementioned range hood baffle limiting structure, the technical advantages and effects that the range hood can achieve also include those of the range hood baffle limiting structure, which will not be elaborated here.

[0099] Embodiment 2

[0100] This embodiment provides a range hood baffle limiting structure and a range hood having the same. The difference from the first embodiment is as follows:

[0101] As Figures 24 to 26 shown, a rotating groove 32 is provided on the limiting support 3, and a first rotating shaft 22 is provided on the limiting connecting rod 2. The first rotating shaft 22 is placed in the rotating groove 32 and is rotationally matched with the rotating groove 32. Two groove walls of the rotating groove 32 respectively extend outward to form a first limiting surface 311 and a second limiting surface 312. A positioning block 221 is provided on the first rotating shaft 22. The positioning block 221 rotates with the first rotating shaft 22 and can abut against the first limiting surface 311 or the second limiting surface 312, so as to limit the opening position and the closing position of the range hood baffle 200.

[0102] Specifically, as Figure 24 shown, the limiting connecting rod 2 is a U-shaped connecting rod, including two oppositely arranged straight arms and a first rotating shaft 22 arranged between the two straight arms. To cooperate with the structure of the U-shaped connecting rod, the connecting connecting rod 4 in this embodiment is an H-shaped connecting rod, which is convenient for connecting with the U-shaped connecting rod. As the limiting connecting rod 2 rotates, as Figure 27 and Figure 28 shown, when the positioning block 221 abuts against the second limiting surface 312, the range hood baffle 200 is in the fully closed position. As Figure 29 shown, when the positioning block 221 on the first rotating shaft 22 abuts against the first limiting surface 311, the range hood baffle 200 is in the fully open position.

[0103] In other feasible embodiments, as Figure 25 shown, the limiting connecting rod 2 can also be an annular connecting rod, and one rod in the annular connecting rod is the first rotating shaft 22. Specifically, the limiting connecting rod 2 is a rectangular annular connecting rod structure, and one short rod of it is used as the first rotating shaft 22, and the positioning block 221 is arranged on the first rotating shaft 22.

[0104] Embodiment 3

[0105] This embodiment provides a range hood baffle limiting structure and a range hood having the same. The difference from the first embodiment is as follows:

[0106] As Figures 30 to 34As shown, the first limiting unit includes a slider assembly 5, and the second limiting unit includes a slideway 6. The slider assembly 5 is slidably connected to the slideway 6. The slider 51 is also rotatably connected to the rotating hook 1. The slideway 6 is provided with a first limiting surface 311 and a second limiting surface 312. The slider assembly 5 can cooperate with the first limiting surface 311 and the second limiting surface 312 respectively, so as to limit the opening position and the closing position of the smoke collecting plate 200.

[0107] Specifically, as Figure 33 shown, the slideway 6 is provided with at least one strip-shaped groove 61 along its own length direction. The two ends of the strip-shaped groove 61 in the length direction are respectively the first limiting surface 311 and the second limiting surface 312. The slider assembly 5 includes a slider 51 and at least one slide rod 52. The slider 51 is slidably connected to the slideway 6. The slide rod 52 is arranged on the slider 51. The slide rod 52 is slidably matched with the strip-shaped groove 61 and can abut against the first limiting surface 311 or the second limiting surface 312. The slider 51 is provided with a second rotating shaft 53. The second rotating shaft 53 is rotatably connected to the rotating hook 1 through a connecting link 4, that is, the connecting link 4 can rotate around the second rotating shaft 53. The end of the connecting link 4 away from the slider 51 is rotatably connected to the rotating hook 1.

[0108] Under this structure, the slider 51 is slidably connected to the slideway 6 through the slide rod 52. The slide rod 52 limits the slider 51 in the slideway 6 to prevent the slider 51 from falling off the slideway 6. The front side surface of the slideway 6 is the first limiting surface 311, and the rear side surface of the slideway 6 is the second limiting surface 312. When the push rod motor 302 drives the rotating hook 1 to move, the stroke of the smoke collecting plate 200 is limited by the position of the slider 51 on the slideway 6. As Figure 35 shown, when the slider 51 slides to abut against the first limiting surface 311, the smoke collecting plate 200 is in the fully open position. As Figure 36 shown, when the slider 51 slides to abut against the second limiting surface 312, the smoke collecting plate 200 is in the fully closed position.

[0109] In this embodiment, one strip-shaped groove 61 is opened on each of the upper and lower surfaces of the slideway 6, and one slide rod 52 is provided on each of the upper and lower surfaces of the slider 51. The two slide rods 52 are arranged in the strip-shaped grooves 61 in a one-to-one correspondence. Specifically, as Figure 33 and Figure 34 shown, threaded holes 511 are respectively provided on the upper and lower surfaces of the slider 51, and threaded posts 521 are provided on the slide rods 52. The threaded posts 521 are threadedly connected to the threaded holes 511. During assembly, first place the slider 51 into the slideway 6, and then install the slide rod 52 onto the slider 51 through the strip-shaped groove 61. This structural design facilitates the assembly and disassembly of the slider 51 and the slideway 6.

[0110] The slideway 6 is installed on the side baffle 102. The slideway 6 in this embodiment is of a U-shaped structure, with its opening facing away from the side baffle 102. Strip-shaped grooves 61 are respectively formed on the two side walls of the U-shaped structure. The reinforcing convex hull 103 on the side baffle 102 is also designed to be strip-shaped, and the length of the reinforcing convex hull 103 is greater than the length of the slideway 6 to adjust the installation position of the slideway 6 or adapt to a slideway 6 with a greater length.

[0111] As Figures 37 to 40 shown, it is a schematic diagram of the movement process of the smoke collecting plate opening and closing in this embodiment.

[0112] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The limiting structure of the smoke gathering plate, characterized in that, Comprising: A rotating hook (1), including a first hook arm and a second hook arm arranged at an angle, the first hook arm being connected to the range hood housing (100), the second hook arm being connected to the smoke collecting plate (200), and the output end of the driving assembly being connected to the rotating hook (1); A first limiting unit, one end of which is movably connected to the rotating hook (1); and, A second limiting unit, one end of which is movably connected to the other end of the first limiting unit, and the other end of the second limiting unit being connected to the range hood housing (100); The second limiting unit is provided with a first limiting surface (311) and a second limiting surface (312), and the first limiting unit can cooperate with the first limiting surface (311) to limit the fully opened position of the smoke collecting plate (200), and the first limiting unit can also cooperate with the second limiting surface (312) to limit the fully closed position of the smoke collecting plate (200).

2. The smoke collecting plate limiting structure according to claim 1, characterized in that The smoke collecting plate limiting structure further includes a connecting piece (7), one end of the connecting piece (7) being rotatably connected to the output end of the driving assembly, and the other end being fixedly connected to the rotating hook (1).

3. The smoke collecting plate limiting structure according to claim 2, characterized in that The connecting piece (7) is arranged at the connection of the first hook arm and the second hook arm, the connecting piece (7) includes three connecting parts, the three connecting parts are arranged in a triangular shape, one of the connecting parts is rotatably connected to the output end of the driving assembly, and the other two connecting parts are respectively fixedly connected to the first hook arm and the second hook arm.

4. The smoke collecting plate limiting structure according to claim 1, characterized in that The first limiting unit includes a limiting connecting rod (2), the second limiting unit includes a limiting support (3), one end of the limiting connecting rod (2) is rotatably connected to the limiting support (3), and the other end is rotatably connected to the rotating hook (1), the limiting support (3) is provided with the first limiting surface (311) and the second limiting surface (312), and the limiting connecting rod (2) can cooperate with the first limiting surface (311) and the second limiting surface (312) respectively.

5. The smoke collecting plate limiting structure according to claim 4, characterized in that The limiting support (3) is provided with a limiting convex block (31), the limiting convex block (31) has the first limiting surface (311) and the second limiting surface (312), the limiting connecting rod (2) is provided with a clamping convex block (21), and the clamping convex block (21) can respectively abut against the first limiting surface (311) and the second limiting surface (312).

6. The smoke collecting plate limiting structure according to claim 5, characterized in that There are two said limiting bumps (31) provided on the said limiting support (3). The two opposite faces of the two said limiting bumps (31) are respectively the said first limiting face (311) and the said second limiting face (312). There is one said clamping protrusion (21) provided on the said limiting connecting rod (2). The said clamping protrusion (21) is located between the two said limiting bumps (31) and can respectively abut against the said first limiting face (311) and the said second limiting face (312); or, There is one said limiting bump (31) provided on the said limiting support (3). The two opposite faces of the said limiting bump (31) are respectively the said first limiting face (311) and the said second limiting face (312). There are two said clamping protrusions (21) provided on the said limiting connecting rod (2). The said clamping protrusions (21) protrude from the installation plane of the said limiting connecting rod (2), such that one said clamping protrusion (21) can abut against the said first limiting face (311), and the other said clamping protrusion (21) can abut against the said second limiting face (312).

7. The smoke collecting plate limiting structure according to claim 4, wherein There is a rotating groove (32) provided on the said limiting support (3). There is a first rotating shaft (22) provided on the said limiting connecting rod (2). The said first rotating shaft (22) is placed in the said rotating groove (32) and is rotationally matched with the said rotating groove (32). The two groove walls of the said rotating groove (32) respectively extend outwards to form the said first limiting face (311) and the said second limiting face (312). There is a positioning block (221) provided on the said first rotating shaft (22). The said positioning block (221) rotates with the said first rotating shaft (22) and can abut against the said first limiting face (311) or the said second limiting face (312).

8. The smoke collecting plate limiting structure according to claim 7, wherein The said limiting connecting rod (2) is a U-shaped connecting rod, including two oppositely arranged straight arms and the said first rotating shaft (22) arranged between the two said straight arms; or, The said limiting connecting rod (2) is an annular connecting rod, and one of the rods in the said annular connecting rod is the said first rotating shaft (22).

9. The smoke collecting plate limiting structure according to any one of claims 4 - 8, wherein The said smoke collecting plate limiting structure further includes a connecting connecting rod (4). One end of the said connecting connecting rod (4) is rotationally connected to the said limiting connecting rod (2), and the other end of the said connecting connecting rod (4) is rotationally connected to the said rotating hook (1).

10. The smoke collecting plate limiting structure according to any one of claims 1 - 3, wherein The said first limiting unit includes a slider assembly (5), the said second limiting unit includes a slideway (6). The said slider assembly (5) is slidably connected to the said slideway (6). The said slider assembly (5) is also rotationally connected to the said rotating hook (1). The said first limiting face (311) and the said second limiting face (312) are provided on the said slideway (6). The said slider assembly (5) can cooperate with the said first limiting face (311) and the said second limiting face (312) respectively.

11. The smoke collecting plate limiting structure according to claim 10, characterized in that at least one strip-shaped groove (61) is formed in the sliding track (6) along its own length direction, the two ends of the strip-shaped groove (61) in the length direction are respectively the first limiting surface (311) and the second limiting surface (312), the slider assembly (5) includes a slider (51) and at least one sliding rod (52), the slider (51) is slidably connected with the sliding track (6), the sliding rod (52) is arranged on the slider (51), the sliding rod (52) is slidably matched with the strip-shaped groove (61) and can abut against the first limiting surface (311) or the second limiting surface (312), a second rotating shaft (53) is arranged on the slider (51), and the second rotating shaft (53) is rotatably connected with the rotating hook (1) through a connecting link (4).

12. An oil fume suction machine, characterized in that, It includes the smoke collecting plate limiting structure according to any one of claims 1-11.

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