Range hood

Abstract

The invention relates to the technical field of kitchen appliances, and discloses a range hood which comprises a shell, a turning plate mechanism and a flexible driving mechanism, the turning plate mechanism is used for opening or closing a smoke inlet in the shell, the turning plate mechanism comprises a first turning plate assembly and a second turning plate assembly which are in transmission connection, and the second turning plate assembly is connected with the shell; the first turning plate assembly is connected to the lower end of the second turning plate assembly; the flexible driving mechanism comprises a driving assembly, a force storage assembly and a flexible control rope, one end of the force storage assembly is connected with the second turning plate assembly, the other end is connected with the first turning plate assembly, one end of the flexible control rope is connected with the output end of the driving assembly, and the other end is connected with the force storage assembly; when the flexible control rope is tightened, the first turning plate assembly and the second turning plate assembly can be driven to be turned over and opened successively, so that the turning plate mechanism has a semi-open state and a full-open state. The range hood is small in occupied space, compact in structure and convenient to maintain and clean quickly, noise and vibration in the operation process are reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a range hood. Background Art

[0002] Range hoods are electrical appliances widely used in kitchens to exhaust fumes generated during cooking. Range hoods are divided into side-suction and direct-suction types according to the way they absorb fumes. In existing side-suction range hoods, the flip glass is usually driven by a single-sided push rod motor. Although this method is simple to implement and has low cost, it also has some significant technical problems. First, the push rod motor and the hinged four-bar linkage occupy a large space, making the range hood design not compact enough, affecting the overall aesthetics and installation flexibility. The structure is complex. Once these moving parts have problems, maintenance and cleaning work are very cumbersome, increasing maintenance costs and time. In addition, the single-sided push rod motor drives the flip glass to move, and the flip movement is unstable. The method of directly pushing the flip glass may generate large noise and vibration during operation, affecting the user experience.

[0003] Therefore, there is an urgent need for a range hood to solve the above-mentioned technical problems. Summary of the invention

[0004] The object of the present invention is to provide a range hood which has a compact structure, is easy to maintain, and has low operating noise and vibration.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A range hood, comprising:

[0007] A housing, on which a smoke inlet is provided;

[0008] a flap mechanism, used to open or close the smoke inlet, the flap mechanism comprising a first flap assembly and a second flap assembly in transmission connection, the second flap assembly being connected to the housing, the first flap assembly being connected to the lower end of the second flap assembly; and,

[0009] A flexible driving mechanism comprises a driving component, a force storage component and a flexible control rope, wherein one end of the force storage component is connected to the second flap component, and the other end is connected to the first flap component, one end of the flexible control rope is connected to the output end of the driving component, and the other end is connected to the force storage component, and when the flexible control rope is tightened, it can drive the first flap component and the second flap component to flip and open successively, so that the flap mechanism has a half-open state in which only the first flap component is open, and a fully-open state in which both the first flap component and the second flap component are open.

[0010] As a preferred technical solution of the above-mentioned range hood, the driving assembly includes a motor and a take-up wheel, the take-up wheel is connected to the output shaft of the motor, and the flexible control rope is connected to the take-up wheel.

[0011] The flexible driving mechanism also includes a reversing assembly, which is connected to the housing. The flexible control rope passes through the reversing assembly and is then connected to the power storage assembly.

[0012] As a preferred technical solution for the above-mentioned range hood, the reversing assembly includes a first pulley and a second pulley, the first pulley is arranged between the driving assembly and the second pulley, the central axis of the first pulley is arranged at an angle to the central axis of the second pulley, the extension direction of the central axis of the second pulley is parallel to the extension direction of the rotation center of the force storage assembly, and the flexible control rope passes through the first pulley and the second pulley in sequence and then is connected to the force storage assembly.

[0013] As a preferred technical solution of the above-mentioned range hood, the second pulley is at least partially located on the outside of the second flap assembly, so that the flexible control rope between the second pulley and the force storage assembly is located on the outside of the second flap assembly.

[0014] As a preferred technical solution of the above-mentioned range hood, the flexible control rope between the second pulley and the force storage assembly is arranged at an angle to the plane where the second flap assembly is located.

[0015] As a preferred technical solution for the above-mentioned range hood, the second pulley includes an integrally arranged second pulley body and a fixed-angle hinge, the second flap assembly is rotatably connected to the shell through the fixed-angle hinge, the second pulley body is arranged on the outside of the fixed-angle hinge, the flexible control rope is wound around the second pulley body, and the fixed-angle hinge stops rotating after rotating to a set angle to limit the flipping angle of the second flap assembly.

[0016] As a preferred technical solution for the above-mentioned range hood, the power storage assembly includes a power storage spring and an eccentric wheel, one end of the power storage spring is connected to the second flap assembly, and the other end is connected to the eccentric wheel, the rotation centers of the power storage spring and the eccentric wheel are coaxially arranged, the eccentric wheel is connected to the first flap assembly, and the flexible control rope is connected to the eccentric wheel. When the flexible control rope is tightened, it can drive the eccentric wheel to rotate, thereby driving the first flap assembly and the second flap assembly to flip and open successively.

[0017] As a preferred technical solution of the above range hood, the range hood further comprises an elastic tensioning member, one end of which is connected to the housing, and the other end of which is connected to the second flap assembly;

[0018] During the process of the flap mechanism changing from the closed state to the semi-open state, the elastic tensioning member can keep the second flap assembly stationary; during the process of the flap mechanism changing from the semi-open state to the fully-open state, the force of the driving assembly is greater than the tensioning force of the elastic tensioning member, so that the flexible control rope drives the second flap assembly to flip outward through the force storage assembly.

[0019] As a preferred technical solution for the above-mentioned range hood, a flexible driving mechanism is respectively provided on the left and right sides of the flap mechanism, and the two flexible driving mechanisms share one driving assembly. The flexible driving mechanism also includes a tensioning wheel, and a tensioning wheel, a force storage assembly and a flexible control rope are respectively provided on both sides of the driving assembly. The tensioning wheel is arranged between the driving assembly and the force storage assembly, and the two flexible control ropes respectively pass through the top and bottom of the two tensioning wheels and press against the surface of the tensioning wheel.

[0020] The beneficial effects of the present invention are:

[0021] The range hood of the present invention comprises a shell, a flap mechanism and a flexible driving mechanism, and the shell is provided with a smoke inlet; the flap mechanism is used to open or close the smoke inlet, and the flap mechanism comprises a first flap assembly and a second flap assembly that are transmission-connected, the second flap assembly is connected to the shell, and the first flap assembly is connected to the lower end of the second flap assembly; the flexible driving mechanism comprises a driving assembly, a force storage assembly and a flexible control rope, one end of the force storage assembly is connected to the second flap assembly, and the other end is connected to the first flap assembly, one end of the flexible control rope is connected to the output end of the driving assembly, and the other end is connected to the force storage assembly, and when the flexible control rope is tightened, it can drive the first flap assembly and the second flap assembly to flip and open successively, so that the flap mechanism has a half-open state in which only the first flap assembly is opened, and a fully-open state in which both the first flap assembly and the second flap assembly are opened. The range hood adopts a flexible drive mechanism, replacing the traditional single-sided push rod motor direct push method, to achieve smooth flipping of the flap mechanism. It has a compact structure, occupies little space, and has a simple drive method, which is convenient for quick maintenance and cleaning. In addition, it also effectively reduces noise and vibration during operation, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional structural diagram of a range hood in a closed state provided by a specific embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the back of the range hood with the shell removed provided by a specific embodiment of the present invention;

[0024] Figure 3is a structural schematic diagram of a partial structure of a range hood provided by a specific embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of the working state of the eccentric wheel of the range hood in the closed state provided by the specific embodiment of the present invention;

[0026] Figure 5 is a schematic cross-sectional structural diagram of a range hood in a half-open state provided by a specific embodiment of the present invention;

[0027] Figure 6 is a top cross-sectional view of a range hood provided by a specific embodiment of the present invention in a half-open state;

[0028] Figure 7 is a structural schematic diagram of a range hood provided by a specific embodiment of the present invention in a half-open state;

[0029] Figure 8 is a schematic diagram of the working state of the eccentric wheel of the range hood in a half-open state provided by a specific embodiment of the present invention;

[0030] Fig. 9 is a schematic cross-sectional structural diagram of a range hood provided by a specific embodiment of the present invention in a fully open state;

[0031] Fig.10 is a top cross-sectional view of a range hood provided by a specific embodiment of the present invention in a fully open state;

[0032] Fig.11 is a structural schematic diagram of a range hood provided by a specific embodiment of the present invention in a fully open state;

[0033] Fig.12 is a schematic diagram of the working state of the eccentric wheel of the range hood provided by the specific embodiment of the present invention when it is in a fully open state;

[0034] Fig.13 It is a structural schematic diagram of an eccentric wheel and a sleeve provided in a specific embodiment of the present invention;

[0035] Fig.14 It is a schematic diagram of the assembly relationship of a part of the structure of the power storage assembly provided in a specific embodiment of the present invention;

[0036] Fig.15 It is a cross-sectional view of a partial structure of a power storage assembly provided in a specific embodiment of the present invention.

[0037] In the figure:

[0038] 1. Shell;

[0039] 2. The first flap assembly;

[0040] 3. The second flap assembly;

[0041] 4. driving assembly; 41. motor; 42. tightening wheel;

[0042] 51. first pulley; 52. second pulley;

[0043] 61. Accumulation spring; 62. Eccentric wheel; 63. Connecting rod; 64. Decorative center axis; 65. Rotating shaft; 66. Bushing; 621. Groove; 622. Reinforcement rib;

[0044] 7. Flexible control rope;

[0045] 8. Tensioner;

[0046] 9. Elastic tensioning piece;

[0047] 10. Side panels. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0054] like Figures 1 to 15As shown, this embodiment provides a range hood with compact structure, easy maintenance, stable operation and high efficiency. The range hood includes a housing 1, a flap mechanism and a flexible driving mechanism. The housing 1 is provided with a smoke inlet; the flap mechanism is used to open or close the smoke inlet, the flap mechanism includes a first flap assembly 2 and a second flap assembly 3 which are connected in a transmission manner, the second flap assembly 3 is connected to the housing 1, and the first flap assembly 2 is connected to the lower end of the second flap assembly 3; the flexible driving mechanism includes a driving assembly 4, a power storage assembly and a flexible control rope 7, the driving assembly 4 is arranged inside the housing 1, one end of the power storage assembly is connected to the second flap assembly 3, and the other end is connected to the first flap assembly 2, one end of the flexible control rope 7 is connected to the output end of the driving assembly 4, and the other end is connected to the power storage assembly, when the flexible control rope 7 is tightened, it can drive the first flap assembly 2 and the second flap assembly 3 to flip and open successively, and the flipping sequence is unique, so that the flap mechanism has a half-open state in which only the first flap assembly 2 is opened and a full-open state in which both the first flap assembly 2 and the second flap assembly 3 are opened. In this embodiment, the smoke inlet faces forward (in this embodiment, the front, rear, left, right, top, bottom and other directions are all described relative to the user when the range hood is in use).

[0055] Compared with the technical problems existing in the driving of the flap mechanism of the side-suction range hood in the prior art, this range hood adopts a flexible driving mechanism, replacing the traditional single-sided push rod motor direct driving method, to achieve the smooth flipping of the flap mechanism. It has a compact structure and occupies little space. The simplified driving method simplifies the structure and facilitates quick maintenance and cleaning. In addition, it also effectively reduces noise and vibration during operation, improving the user experience.

[0056] In this embodiment, the first flap assembly 2 includes a first flap assembly body and a first decorative panel, and the first decorative panel covers the outer surface of the first flap assembly body. The first flap assembly body can be made of sheet metal with good strength, so as to ensure the overall structural strength of the first flap assembly 2. The first decorative panel can be made of glass, which is not only beautiful but also easy to clean. Optionally, the first flap assembly body and the first decorative panel can be fixed by bonding.

[0057] Similarly, the second flap assembly 3 includes a second flap assembly body and a second decorative plate, and the second decorative plate covers the outer surface of the second flap assembly body. The second flap assembly body can be made of sheet metal with good strength, so as to ensure the overall structural strength of the second flap assembly 3. The second decorative plate can be made of glass, which is not only beautiful but also easy to clean. Optionally, the second flap assembly body and the second decorative plate can be fixed by bonding.

[0058] like Figure 2 and Figure 3As shown, a flexible driving mechanism is provided on the left and right sides of the flap mechanism, and the two flexible driving mechanisms share a driving assembly 4. The flexible driving mechanism also includes a tensioning wheel 8, which cooperates with the flexible control rope 7. The tensioning wheel 8 is used to maintain the constant tension of the flexible control rope 7, thereby ensuring the stability and reliability of the operation of the flap mechanism. Specifically, the driving assembly 4 is approximately located at the center of the housing 1, and a tensioning wheel 8, a power storage assembly and a flexible control rope 7 are provided on both sides of the driving assembly 4. The tensioning wheel 8 is arranged between the driving assembly 4 and the power storage assembly. The two flexible control ropes 7 pass through the upper and lower sides of the two tensioning wheels 8 and press against the surface of the tensioning wheel 8, that is, one flexible control rope 7 passes through the upper side of the tensioning wheel 8 on the same side, and the other flexible control rope 7 passes through the lower side of the tensioning wheel 8 on the same side. Through the reasonable arrangement of the tensioning wheel 8, the constant tension of the flexible control rope 7 is ensured, thereby ensuring that the flexible control rope 7 can be evenly tightened or relaxed under the drive of the driving component 4, avoiding the system instability problem caused by inconsistent tension, thereby ensuring the stable and reliable operation of the flap mechanism.

[0059] The driving assembly 4 includes a motor 41 and a take-up wheel 42. The take-up wheel 42 is connected to the output shaft of the motor 41. The flexible control rope 7 is connected to the take-up wheel 42. When the motor 41 is started, the take-up wheel 42 rotates, thereby tightening or loosening the flexible control rope 7. The motor 41 transmits power through the two flexible control ropes 7. When the motor 41 starts to output power, the flexible control rope 7 will shrink according to the rotation direction of the motor 41, thereby pulling the flap mechanism to open. The tension wheels 8 on both sides of the motor 41 ensure the synchronous drive of the flexible control ropes 7 on both sides, realize the precise control of the flap mechanism, thereby ensuring the stable opening and closing of the flap mechanism and improving the stability of the system.

[0060] The flexible driving mechanism in this embodiment further includes a reversing assembly, which is connected to the housing 1 and is used to guide the direction of the flexible control rope 7. The flexible control rope 7 passes through the pulley assembly and is connected to the power storage assembly.

[0061] The reversing assembly includes a first pulley 51 and a second pulley 52. ​​The first pulley 51 is arranged between the driving assembly 4 and the second pulley 52. ​​The central axis of the first pulley 51 is arranged at an angle with the central axis of the second pulley 52. ​​The extension direction of the central axis of the second pulley 52 is parallel to the extension direction of the rotation center of the power storage assembly. The first pulley 51 is used to change the travel direction of the flexible control rope 7. The second pulley 52 is used to pull the load. The flexible control rope 7 passes through the first pulley 51 and the second pulley 52 in sequence and then is wound on the power storage assembly. Since the flexible control rope 7 extends in the horizontal direction inside the housing 1, and the force direction of the pulling flap mechanism is the vertical direction, therefore, in order to realize the force driving effect of the flexible control rope 7 on the flap mechanism, the first pulley 51 is used as a reversing wheel to change the travel direction of the flexible control rope 7. The flexible control rope 7 passes through the first pulley 51 and then passes through the second pulley 52 to be directly connected to the power storage assembly. The force transmission of the flexible control rope 7 is simply and effectively realized through the two pulleys, and the structure is simple, easy to realize and maintain. In this embodiment, the fulcrum of the flexible control rope 7 is located at the top of the shell 1, therefore, the second pulley 52 is arranged at the top of the shell 1, and the driving assembly 4 is located below the top of the shell 1, therefore, the first pulley 51 is not arranged horizontally, but is inclined upward at a certain angle, so that the flexible control rope 7 passes through the first pulley 51 and then extends obliquely upward.

[0062] Some range hoods in the prior art use a flexible drive structure, but the flexible control rope 7, as a sliding drive component, needs to cooperate with a rotating drive component, which not only increases the complexity of the structure but also may reduce the drive efficiency. Figure 7 As shown, the second pulley 52 is at least partially located outside the second flap assembly 3, so that the flexible control rope 7 between the second pulley 52 and the power storage assembly is located outside the second flap assembly 3, that is, the flexible control rope 7 is located outside the second flap assembly 3 after passing through the second pulley 52. ​​This structural setting makes the path of the flexible control rope 7 direct and effective, thereby effectively improving the driving efficiency of the driving assembly 4.

[0063] Optionally, the flexible control rope 7 between the second pulley 52 and the power storage assembly is arranged at an angle to the plane where the second flap assembly 3 is located. After passing through the second pulley 52, the flexible control rope 7 is not arranged parallel to the second flap assembly 3, which can prevent the occurrence of a jamming phenomenon.

[0064] In order to solve the problem of fixed flip angle of the flap mechanism, such as Figure 1 , Figure 5 and Fig. 9As shown, the second pulley 52 includes an integrally arranged second pulley body and a fixed angle hinge, the second flap assembly 3 is rotatably connected to the housing 1 via the fixed angle hinge, the second pulley body is arranged on the outside of the fixed angle hinge, the flexible control rope 7 is wound around the second pulley body, and the fixed angle hinge stops rotating after rotating to a set angle to limit the flip angle of the second flap assembly 3. The second flap assembly 3 is equipped with a fixed angle hinge, and the flip angle stops rotating after reaching a set angle, thereby ensuring that the second flap assembly 3 can accurately stop at a predetermined position. It should be noted that the fixed angle hinge is an existing structure in the prior art, and its specific structure will not be repeated here. Making the second pulley body and the fixed angle hinge into an integrally formed structure not only reduces the number of components and improves the compactness of the structure, but also improves the consistent controllability of the flap mechanism movement.

[0065] In this embodiment, the closing and opening of the first flap assembly 2 are both dependent on the left and right power storage assemblies. The power storage assembly includes a power storage spring 61 and an eccentric wheel 62. One end of the power storage spring 61 is connected to the second flap assembly 3, and the other end is connected to the eccentric wheel 62. The rotation centers of the power storage spring 61 and the eccentric wheel 62 are coaxially arranged. The eccentric wheel 62 is connected to the first flap assembly 2, and the flexible control rope 7 is connected to the eccentric wheel 62. The flexible control rope 7 is directly connected to the eccentric wheel 62 after passing through the first pulley 51 and then the second pulley 52. ​​When the motor 41 starts to rotate, the flexible control rope 7 will shrink according to the rotation direction of the motor 41, thereby pulling the first flap assembly 2 to open.

[0066] The core feature of the eccentric wheel 62 is the eccentric design of its axle, so that the rotation radius of the eccentric wheel 62 changes with the angle. The profile of the eccentric wheel 62 is a spline curve, and the curvature of the spline curve changes with the rotation of the eccentric wheel 62, so that the rotation radius of the eccentric wheel 62 changes with the rotation angle.

[0067] Specifically, when the flap mechanism is in the closed state, Figure 4 As shown, the distance between the rotation center of the eccentric wheel 62 and the tangent point of the flexible control rope 7 is x1. In the half-open state, as shown in FIG. Figure 8 As shown, the distance between the rotation center of the eccentric wheel 62 and the tangent point of the flexible control rope 7 is x2. In the fully open state, as shown in FIG. Fig.12 As shown, the distance between the rotation center of the eccentric wheel 62 and the tangent point of the flexible control rope 7 is x3, x3>x2>x1. It should be noted that the distance between the rotation center of the eccentric wheel 62 and the tangent point of the flexible control rope 7 is the rotation radius of the eccentric wheel 62.

[0068] When the flap mechanism is closed, the spline curve of the eccentric wheel 62 makes the wheel diameter relatively small, which can be considered as the minimum rotation radius of the eccentric wheel 62. As the eccentric wheel 62 rotates, the rotation radius of the eccentric wheel 62 gradually increases. This design provides the advantage of saving effort when opening the flap mechanism, and it is easier to overcome the dead point when winding the flexible control rope 7. When the eccentric wheel 62 starts to rotate, the increase in its rotation radius means that the pulling point of the flexible control rope 7 is farther away from the axis. According to the lever principle, this makes the force required to open the flap mechanism smaller, thereby improving the mechanical efficiency of the system. As the eccentric wheel 62 continues to rotate, the increase in the wheel diameter not only helps to save effort, but also can control the opening and closing speed and achieve more refined control. At the same time, it helps to reduce the vibration of the flap mechanism during the opening process and achieve more stable and precise control.

[0069] In order to realize the structure in which the flexible control rope 7 between the second pulley 52 and the force storage assembly is set at an angle with the plane where the second flap assembly 3 is located, in the present embodiment, in the closed state, the radius of the second pulley 52 is slightly larger than the distance x1 between the rotation center of the eccentric wheel 62 and the tangent point of the flexible control rope 7, that is, the rotation radius of the eccentric wheel 62. This upper larger and lower smaller wheel group design makes the flexible control rope 7 between the second pulley 52 and the eccentric wheel 62 have a certain angle with the second flap assembly 3, thereby preventing the flexible control rope 7 from being parallel to the second flap assembly 3 after passing through the second pulley 52, thereby preventing the occurrence of jamming.

[0070] Alternatively, if Fig.13 As shown, a groove 621 is provided on the outer peripheral surface of the eccentric wheel 62, and the groove 621 is used to accommodate the flexible control rope 7, and has a guiding and limiting effect on the flexible control rope 7. The flexible control rope 7 is accommodated in the groove 621, which can prevent the flexible control rope 7 from deviating from the eccentric wheel 62 or even detaching from the surface of the eccentric wheel 62 when tightening or loosening, thereby ensuring the stability and reliability of the flexible control rope 7 on the driving force of the eccentric wheel.

[0071] In one possible embodiment, Fig.14 and Fig.15 As shown, the power storage assembly further includes a rotating shaft 65, which is passed through and fixed to the rotation center of the eccentric wheel 62 and is rotationally connected to the second flap assembly 3, and the inner ring of the power storage spring 61 is fixedly connected to the rotating shaft 65. Under the pulling force of the flexible control rope 7, the eccentric wheel 62 and the power storage spring 61 rotate relative to the second flap assembly 3 through the rotating shaft 65, thereby driving the first flap assembly 2 to flip.

[0072] In another possible embodiment, Fig.14 and Fig.15As shown, the power storage assembly also includes a rotating shaft 65 and a sleeve 66. The rotating shaft 65 is rotatably inserted into the inner hole of the sleeve 66 and is fixedly connected to the second flap assembly 3. The sleeve 66 is inserted into and fixed to the rotation center of the eccentric wheel 62. The inner ring of the power storage spring 61 is fixedly connected to the sleeve 66. Under the above structure, the rotating shaft 65 is fixed. Under the tension of the flexible control rope 7, the eccentric wheel 62 and the power storage spring 61 rotate relative to the rotating shaft 65 and the second flap assembly 3 through the sleeve 66, thereby driving the first flap assembly 2 to flip. The sleeve 66 can protect the rotating shaft 65, effectively avoid wear and friction of the rotating shaft 65, reduce energy loss, and ensure stability and efficiency; and the sleeve 66 is easy to replace after being worn, reducing maintenance costs.

[0073] Optionally, the sleeve 66 and the eccentric wheel 62 can be integrally formed, which is easy to process and has high structural stability. The sleeve 66 and the eccentric wheel 62 can also be fixedly connected, such as by welding, interference connection, or by pin connection, etc., which will not be listed one by one in this embodiment.

[0074] like Fig.13 As shown, when the shaft sleeve 66 and the eccentric wheel 62 are an integrally formed structure, a reinforcing rib 622 may be further provided on the eccentric wheel 62, one end of the reinforcing rib 622 decorates the shaft sleeve 66, and the other end is connected to the eccentric wheel 62. The reinforcing rib 622 may improve the overall structural strength of the eccentric wheel 62, while ensuring the connection stability between the eccentric wheel 62 and the shaft sleeve 66, thereby improving the reliability of the rotation of the eccentric wheel 62 and extending the service life.

[0075] like Figure 1 , Figure 4 , Figure 8 , Fig.12 and Fig.13 As shown, the power storage assembly in this embodiment further includes a connecting rod 63, one end of the connecting rod 63 is connected to the eccentric wheel 62, and the other end is connected to the first flap assembly 2. By providing the connecting rod 63, the eccentric wheel 62 can drive the first flap assembly 2 to rotate. The connecting rod 63 can be, but is not limited to, L-shaped or reverse C-shaped, as long as the rotation of the eccentric wheel 62 can be converted into the rotation of the first flap assembly 2.

[0076] Optionally, the connecting rod 63 and the eccentric wheel 62 are integrally formed, which simplifies the structure and facilitates assembly and processing.

[0077] In this embodiment, Figure 2 , Figure 6 and Fig.10 As shown, the range hood also includes a decorative center axis 64 arranged on the outside of the flap mechanism, and the decorative center axis 64 is arranged between the first flap assembly 2 and the second flap assembly 3, and is used to cover the gap between the first flap assembly 2 and the second flap assembly 3, ensuring that the internal structure of the first flap assembly 2 and the second flap assembly 3 will not be exposed when rotating, thereby improving the appearance.

[0078] like Figure 1 , Figure 5 and Fig. 9 As shown, the range hood in this embodiment further includes an elastic tensioning member 9, one end of which is connected to the housing 1, and the other end is connected to the second flap assembly 3. In the process of the flap mechanism changing from the closed state to the half-open state, the elastic tensioning member 9 can keep the second flap assembly 3 immobile; in the process of the flap mechanism changing from the half-open state to the fully open state, the force of the driving assembly 4 is greater than the tensioning force of the elastic tensioning member 9, so that the flexible control rope 7 drives the second flap assembly 3 to flip outward through the power storage assembly. When the flap mechanism is closed from the fully open state, the tensioning member 9 provides a restoring force to the second flap assembly 3, which can increase the speed of the second flap assembly 3 flipping inward, speed up the closing process of the flap mechanism, and can also tighten the second flap assembly 3 in the closed state, ensuring that there is no gap between the second flap assembly 3 and the housing 1, improving the appearance, and preventing dust and oil smoke from entering the housing 1.

[0079] Optionally, the range hood further comprises a side panel 10, one end of which is fixedly connected to the second flap assembly 3, and the other end of which is connected to an elastic tensioning member 9, and the elastic tensioning member 9 pulls the second flap assembly 3 through the side panel 10. In this embodiment, two side panels 10 are provided, and two elastic tensioning members 9 are also provided, which are respectively provided on the left and right sides of the second flap assembly 3, and the motor 41 works, and the flexible control ropes 7 on both sides thereof are tightened or loosened at the same time, thereby realizing synchronous driving of the side panels 10 on both sides, and the two side panels 10 drive the second flap assembly 3 to move.

[0080] The above structure makes the opening and closing of the second flap assembly 3 more stable, and can also prevent the left and right sides of the second flap assembly 3 from being uneven after closing, thereby improving the appearance of the range hood. When the flap mechanism is closed, the second flap assembly 3 is kept in a closed state by two elastic tension members 9 connected to the side panels 10. When the elastic force of the elastic tension members 9 is overcome by the force applied by the motor 41 through the flexible control rope 7, the second flap assembly 3 begins to flip outward.

[0081] The elastic tensioning member 9 in this embodiment may be, but is not limited to, a tension spring, and in other embodiments may also be an electromagnetic lock or a micro switch.

[0082] The opening process of the flap mechanism of the range hood is briefly described below.

[0083] The motor 41 starts, and transmits power through the two flexible control ropes 7. When the flexible control ropes 7 contract, the eccentric wheel 62 rotates accordingly, driving the connecting rod 63 to rotate. When the contraction force of the flexible control rope 7 is greater than the preset force of the power storage spring 61, the first flap assembly 2 opens. As the first flap assembly 2 opens, the power storage spring 61 gradually tightens until it reaches its contraction limit. At this time, the first flap assembly 2 stops rotating. At this time, the flap mechanism is in a half-open state, as shown in FIG. Figures 5 to 7 As shown; the flexible control rope 7 continues to contract, transmitting power to the second flap assembly 3. The second flap assembly 3 is kept in a closed state by two elastic tension members 9 connected by the side panels 10. When the elastic force of the elastic tension members 9 is overcome by the force applied by the motor 41 through the flexible control rope 7, the second flap assembly 3 begins to open. The second flap assembly 3 is equipped with a fixed angle hinge. The second flap assembly 3 will stop rotating after reaching the set angle, ensuring that the second flap assembly 3 can accurately stop at the predetermined position. At this time, the flap mechanism is in a fully open state, as shown in FIG. Figures 9 to 11 When the second flap assembly 3 is rotated to the right position, the motor 41 receives a signal to stop rotating and lock the current position to keep the flap mechanism stable.

[0084] The range hood in this embodiment uses a motor 41 in conjunction with a flexible control rope 7 and a reversing assembly, replacing the traditional push rod motor direct push method, to achieve a smooth flipping of the flap mechanism. The compact design of the flexible control rope 7 and the reversing assembly effectively reduces the size of the mechanism and solves the problem of occupying a large space. At the same time, the simplified driving method simplifies the structure, facilitates quick maintenance and cleaning, improves the stability of the flap, and reduces noise and vibration during operation. In addition, the reasonable arrangement of the tensioning wheel 8 ensures the constant tension of the flexible control rope 7, avoiding the problem of system instability caused by inconsistent tension. The range hood also includes a fixed angle hinge and a power storage spring 61 contraction limit limit design to ensure that the flap mechanism stops accurately at the desired position, thereby optimizing the user experience.

[0085] Obviously, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection 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, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0086] Note that in the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A range hood, characterized in that: include: A housing (1) having a smoke inlet provided thereon; A flap mechanism, used for opening or closing the smoke inlet, the flap mechanism comprising a first flap assembly (2) and a second flap assembly (3) which are transmission-connected, the second flap assembly (3) being connected to the housing (1), the first flap assembly (2) being connected to the lower end of the second flap assembly (3); and A flexible driving mechanism comprises a driving component (4), a force storage component and a flexible control rope (7); one end of the force storage component is connected to the second flap component (3), and the other end is connected to the first flap component (2); one end of the flexible control rope (7) is connected to the output end of the driving component (4), and the other end is connected to the force storage component; when the flexible control rope (7) is tightened, it can drive the first flap component (2) and the second flap component (3) to flip open successively, so that the flap mechanism has a half-open state in which only the first flap component (2) is opened, and a fully open state in which both the first flap component (2) and the second flap component (3) are opened.

2. The range hood according to claim 1, characterized in that: The driving assembly (4) comprises a motor (41) and a take-up wheel (42), wherein the take-up wheel (42) is connected to an output shaft of the motor (41), and the flexible control rope (7) is connected to the take-up wheel (42).

3. The range hood according to claim 1, characterized in that: The flexible driving mechanism further comprises a reversing assembly, the reversing assembly being connected to the housing (1), and the flexible control rope (7) passing through the reversing assembly and then connected to the power storage assembly.

4. The range hood according to claim 3, characterized in that: The reversing assembly comprises a first pulley (51) and a second pulley (52), wherein the first pulley (51) is arranged between the driving assembly (4) and the second pulley (52), the central axis of the first pulley (51) and the central axis of the second pulley (52) are arranged at an angle, the extension direction of the central axis of the second pulley (52) is parallel to the extension direction of the rotation center of the power storage assembly, and the flexible control rope (7) passes through the first pulley (51) and the second pulley (52) in sequence and is connected to the power storage assembly.

5. The range hood according to claim 4, characterized in that: The second pulley (52) is at least partially located outside the second flap assembly (3), so that the flexible control rope (7) between the second pulley (52) and the force storage assembly is located outside the second flap assembly (3).

6. The range hood according to claim 5, characterized in that: The flexible control rope (7) between the second pulley (52) and the force storage assembly is arranged at an angle to the plane where the second flap assembly (3) is located.

7. The range hood according to claim 4, characterized in that: The second pulley (52) includes an integrally arranged second pulley body and a fixed-angle hinge. The second flap assembly (3) is rotatably connected to the housing (1) via the fixed-angle hinge. The second pulley body is arranged on the outer side of the fixed-angle hinge. The flexible control rope (7) is wound around the second pulley body. The fixed-angle hinge stops rotating after rotating to a set angle to limit the flipping angle of the second flap assembly (3).

8. The range hood according to claim 1, characterized in that: The power storage assembly comprises a power storage spring (61) and an eccentric wheel (62); one end of the power storage spring (61) is connected to the second flap assembly (3), and the other end is connected to the eccentric wheel (62); the rotation centers of the power storage spring (61) and the eccentric wheel (62) are coaxially arranged; the eccentric wheel (62) is connected to the first flap assembly (2); the flexible control rope (7) is connected to the eccentric wheel (62); when the flexible control rope (7) is tightened, it can drive the eccentric wheel (62) to rotate, thereby driving the first flap assembly (2) and the second flap assembly (3) to flip open successively.

9. The range hood according to claim 1, characterized in that: The range hood further comprises an elastic tensioning member (9), one end of the elastic tensioning member (9) being connected to the housing (1), and the other end of the elastic tensioning member (9) being connected to the second flap assembly (3); During the process of the flap mechanism changing from the closed state to the half-open state, the elastic tensioning member (9) is capable of keeping the second flap assembly (3) stationary; during the process of the flap mechanism changing from the half-open state to the fully-open state, the force of the driving assembly (4) is greater than the tensioning force of the elastic tensioning member (9), so that the flexible control rope (7) drives the second flap assembly (3) to flip outward through the force storage assembly.

10. The range hood according to any one of claims 1 to 9, characterized in that: A flexible driving mechanism is provided on the left and right sides of the flap mechanism respectively, and the two flexible driving mechanisms share one driving assembly (4). The flexible driving mechanism also includes a tensioning wheel (8), and a tensioning wheel (8), a force storage assembly and a flexible control rope (7) are provided on both sides of the driving assembly (4). The tensioning wheel (8) is arranged between the driving assembly (4) and the force storage assembly, and the two flexible control ropes (7) pass through the top and bottom of the two tensioning wheels (8) respectively and press against the surface of the tensioning wheel (8).

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