Range hood

Abstract

The invention relates to the technical field of kitchen appliances, and discloses a range hood. The range hood comprises a shell, a turning plate mechanism and a flexible driving mechanism, the turning plate mechanism comprises a first turning plate assembly and a second turning plate assembly, the flexible driving mechanism is arranged in the shell and comprises a driving assembly, a transmission assembly, a force storage assembly and a flexible control rope, one end of the force storage assembly is connected with the first turning plate assembly, and the other end of the force storage assembly is connected with the second turning plate assembly. One end of the transmission assembly is connected with the shell, the other end of the transmission assembly is connected with the second turning plate assembly, one end of the flexible control rope is connected to the output end of the driving assembly, the other end of the flexible control rope penetrates through the transmission assembly and then is connected to the force storage assembly, and when the flexible control rope is tightened, the transmission assembly and the force storage assembly can be driven to rotate at the same time. Therefore, the first turning plate assembly and the second turning plate assembly are driven to be turned and opened at the same time. The flexible driving mechanism is hidden in the shell, the structure is compact, the occupied space is small, the appearance is neat and attractive, the space utilization rate is high, and the cleaning difficulty is low.

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] There are also solutions in the prior art that use flexible drive mechanisms to solve the above problems, but the flexible control ropes, pulleys and other components of the flexible drive mechanism are located on the outside of the flip glass, which are prone to oil and dust accumulation, making them inconvenient to clean and affecting the appearance. In addition, the thick oil stains after long-term use will also affect the stability, reliability and work efficiency of the entire flexible drive mechanism, thereby affecting the user experience.

[0004] Therefore, there is an urgent need for a range hood to solve the above-mentioned technical problems. Summary of the invention

[0005] The object of the present invention is to provide a range hood with a compact structure, good appearance and convenient cleaning and maintenance.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A range hood, comprising:

[0008] A housing having a smoke inlet disposed thereon;

[0009] 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,

[0010] A flexible driving mechanism is arranged inside the shell, and the flexible driving mechanism includes a driving component, a transmission component, a force storage component and a flexible control rope. One end of the force storage component is connected to the first flap component, and the other end is connected to the second flap component. One end of the transmission component is connected to the shell, and the other end is connected to the second flap component. One end of the flexible control rope is connected to the output end of the driving component, and the other end passes through the transmission component and is connected to the force storage component. When the flexible control rope is tightened, it can drive the transmission component and the force storage component to rotate at the same time, thereby driving the first flap component and the second flap component to flip open at the same time.

[0011] As a preferred technical solution for the above-mentioned range hood, the transmission assembly includes a steering mechanism, which is connected to the shell, and the travel direction of the flexible control rope changes after passing through the steering mechanism to be connected to the power storage assembly.

[0012] As a preferred technical solution for the above-mentioned range hood, the steering mechanism includes a steering pulley, the extension direction of the central axis of the steering pulley is parallel to the extension direction of the rotation center of the force storage assembly, and the flexible control rope is connected to the force storage assembly after being wrapped around the steering pulley.

[0013] As a preferred technical solution for the above-mentioned range hood, the steering pulley includes a first pulley and a second pulley which are coaxially arranged, the diameter of the first pulley is larger than the diameter of the second pulley, and the wheel groove on the first pulley is connected to the wheel groove on the second pulley, and the flexible control rope is sequentially wrapped around the first pulley and the second pulley and then connected to the power storage assembly.

[0014] As a preferred technical solution of the above range hood, the first pulley and the second pulley are an integrally formed structure.

[0015] As a preferred technical solution for the above-mentioned range hood, the transmission assembly also includes a linkage mechanism, one end of the linkage mechanism is connected to the steering mechanism, and the other end is connected to the second flap assembly, and the linkage mechanism can move following the rotation of the steering mechanism, thereby driving the second flap assembly to flip.

[0016] As a preferred technical solution for the above-mentioned range hood, the linkage mechanism includes a steering link, one end of the steering link is connected to the steering mechanism, and the other end is connected to the second flap assembly. When the flexible control rope is tightened, it can drive the steering mechanism to rotate, thereby driving the steering link and the second flap assembly to rotate.

[0017] As a preferred technical solution for the above-mentioned range hood, the steering link includes a first link and a second link connected at an angle, the first link is fixedly connected to the steering mechanism, and the second link extends toward the direction of the second flap assembly and is connected to the second flap assembly.

[0018] As a preferred technical solution for the above-mentioned range hood, the linkage mechanism also includes an elastic tensioning member and a side panel, one end of the elastic tensioning member is connected to the shell, and the other end is connected to the side panel, the side panel is arranged parallel to the steering connecting rod, the side panel is fixedly connected to the second flap assembly, and the side panel is also connected to the second connecting rod.

[0019] As a preferred technical solution of the above range hood, the linkage mechanism further includes a synchronization shaft, one end of which is connected to the second connecting rod, and the other end of which is connected to the side plate.

[0020] 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 center 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 to flip open.

[0021] As a preferred technical solution of the above-mentioned range hood, the range hood also includes a decorative central axis arranged on the outside of the flap mechanism, the decorative central axis is arranged between the first flap assembly and the second flap assembly, and is used to cover the gap between the first flap assembly and the second flap assembly, the decorative central axis includes a central axis body, a first decorative strip and a second decorative strip, the central axis body is fixedly connected to the second flap assembly, the second decorative strip is fixedly connected to the first flap assembly, the first decorative strip is movably arranged between the central axis body and the second decorative strip, the upper part of the first decorative strip overlaps with the lower part of the central axis body, and the lower part of the first decorative strip overlaps with the upper part of the second decorative strip.

[0022] As a preferred technical solution of the above range hood, the upper part of the first decorative strip covers the outer side of the lower part of the central axis body, and the upper part of the second decorative strip covers the outer side of the lower part of the first decorative strip; or, the lower part of the central axis body covers the outer side of the upper part of the first decorative strip, and the lower part of the first decorative strip covers the outer side of the upper part of the second decorative strip;

[0023] And / or, the first decorative strip is a metal strip, a magnet is embedded in the central axis body, and the first decorative strip is magnetically connected to the magnet;

[0024] And / or, the assembly surface between the central axis body and the first decorative strip, and the assembly surface between the first decorative strip and the second decorative strip are both in an arc shape.

[0025] The beneficial effects of the present invention are:

[0026] 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 which 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 is arranged inside the shell, and the flexible driving mechanism comprises a driving assembly, a transmission assembly, a power storage assembly and a flexible control rope, one end of the power storage assembly is connected to the first flap assembly, and the other end is connected to the second flap assembly, one end of the transmission assembly is connected to the shell, and the other end is connected to the second 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 power storage assembly after passing through the transmission assembly, and when the flexible control rope is tightened, it can drive the transmission assembly and the power storage assembly to rotate simultaneously, thereby driving the first flap assembly and the second flap assembly to flip and open simultaneously. The range hood adopts a flexible driving mechanism, replacing the traditional single-sided push rod motor direct driving method, to achieve smooth flipping of the flap mechanism. It has a compact structure, occupies a small space, and has a simple driving method. The flexible driving mechanism of the range hood is hidden inside the shell, achieving a neat and beautiful appearance and effective use of space, and also simplifying the maintenance process, reducing the difficulty of cleaning, and further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic cross-sectional structural diagram of a range hood in an open state provided by a specific embodiment of the present invention;

[0028] Figure 2 The structure of the back of the range hood after removing the shell provided by the specific embodiment of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 3 The structure of the back of the range hood after removing the shell provided by the specific embodiment of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 4 is a schematic structural diagram of the front side of a range hood with the shell removed provided by a specific embodiment of the present invention;

[0031] Figure 5 yes Figure 3 A partial enlarged view of the middle A;

[0032] Figure 6 yes Figure 3 A partial enlarged view of point B in the middle;

[0033] Figure 7 It is a structural schematic diagram of an eccentric wheel and a shaft sleeve provided in a specific embodiment of the present invention;

[0034] Figure 8 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;

[0035] Fig. 9 is a cross-sectional view of a partial structure of a power storage assembly provided in a specific embodiment of the present invention;

[0036] Fig.10 is a structural schematic diagram of a range hood provided by a specific embodiment of the present invention in an open state;

[0037] Fig.11 It is a schematic cross-sectional structure diagram of a partial structure of a range hood provided in a specific embodiment of the present invention.

[0038] In the figure:

[0039] 1. Shell;

[0040] 2. The first flap assembly;

[0041] 3. The second flap assembly;

[0042] 4. driving assembly; 41. motor; 42. tightening wheel;

[0043] 51. Steering pulley; 52. Steering connecting rod; 53. Pulley bracket; 54. Synchronous shaft; 511. First pulley; 512. Second pulley; 521. First connecting rod; 522. Second connecting rod;

[0044] 61. Accumulation spring; 62. Eccentric wheel; 63. Connecting rod;

[0045] 7. Flexible control rope;

[0046] 8. Tensioner;

[0047] 9. Elastic tensioning piece;

[0048] 10. Side panels;

[0049] 11. Decorative central axis; 111. Central axis body; 112. First decorative strip; 113. Second decorative strip; 114. Magnet;

[0050] 12. Fixed angle hinge. DETAILED DESCRIPTION

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] like Figures 1 to 8 As shown, this embodiment provides a range hood with a compact structure, good appearance, and easy cleaning and maintenance. 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, and the flap mechanism includes a first flap assembly 2 and a second flap assembly 3 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 is arranged inside the housing 1, and the flexible driving mechanism includes a driving assembly 4, a transmission assembly, a power storage assembly and a flexible control rope 7, one end of the power storage assembly is connected to the first flap assembly 2, and the other end is connected to the second flap assembly 3, one end of the transmission assembly is connected to the housing 1, and the other end is connected to the second flap assembly 3, one end of the flexible control rope 7 is connected to the output end of the driving assembly 4, and the other end passes through the transmission assembly and is connected to the power storage assembly, and when the flexible control rope 7 is tightened, it can drive the transmission assembly and the power storage assembly to rotate simultaneously, thereby driving the first flap assembly 2 and the second flap assembly 3 to flip open simultaneously. 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).

[0058] The range hood adopts a flexible driving mechanism, replacing the traditional single-sided push rod motor direct driving method, to achieve smooth flipping of the flap mechanism, with a compact structure, small space occupation and simple driving method; the flexible driving mechanism of the range hood is hidden inside the shell 1, achieving a neat and beautiful appearance and effective use of space, and also simplifying the maintenance process, reducing the difficulty of cleaning, and further improving the user experience.

[0059] like Figures 1 to 6 As shown, the transmission assembly includes a steering mechanism, which is connected to the housing 1. The flexible control rope 7 changes its travel direction after passing through the steering mechanism to connect to the power storage assembly. By arranging the steering mechanism inside the housing 1, the flexible control rope 7 changes its travel direction inside the housing 1 and connects to the power storage assembly. Compared with the flexible control rope 7 located outside the flap mechanism in the prior art, the appearance is better.

[0060] Optionally, the steering mechanism includes a steering pulley 51, the extension direction of the central axis of the steering pulley 51 is parallel to the extension direction of the rotation center of the power storage assembly, and the flexible control rope 7 is connected to the power storage assembly after being wound around the steering pulley 51. The steering pulley is small in size and is convenient for arrangement in the limited space inside the housing 1. Since the extension direction of the central axis of the steering pulley 51 is parallel to the extension direction of the rotation center of the power storage assembly, the travel direction of the flexible control rope 7 changes after being wound around the steering pulley 51. The power storage assembly can be driven by being directly wound around the power storage assembly, and the structure is simple and the mechanical efficiency is high.

[0061] like Figure 5 and Figure 6 As shown, the steering pulley 51 includes a first pulley 511 and a second pulley 512 which are coaxially arranged. The diameter of the first pulley 511 is larger than the diameter of the second pulley 512, and the wheel groove on the first pulley 511 is connected to the wheel groove on the second pulley 512. The flexible control rope 7 is sequentially wound around the first pulley 511 and the second pulley 512 and then connected to the power storage assembly. The structural design of the steering pulley 51 enables the flexible control rope 7 to efficiently transmit power in a compact space through the ingenious winding of the flexible control rope 7, thereby driving the opening of the flap mechanism, which not only optimizes the space occupation, but also improves the overall aesthetics. The steering pulley 51 is fixed to the inner side of the housing 1 through the pulley bracket 53, ensuring its stability and reliability.

[0062] The first pulley 511 and the second pulley 512 are integrally formed structures, which can reduce the number of parts and reduce the difficulty of assembly, while improving the structural stability of the steering pulley 51, thereby improving the transmission stability and transmission accuracy. Specifically, the first pulley 511 and the second pulley 512 can be an integral casting structure, with simple processing technology and low cost.

[0063] Continue to refer Figure 5 and Figure 6 As shown, the transmission assembly further includes a linkage mechanism, one end of which is connected to the steering mechanism, and the other end is connected to the second flap assembly 3, and the linkage mechanism can move with the rotation of the steering mechanism, thereby driving the second flap assembly 3 to flip. By setting the linkage mechanism, the driving force of the flexible control rope 7 on the steering mechanism can be transmitted to the second flap assembly 3, thereby realizing the flipping movement of the second flap assembly 3.

[0064] Specifically, the linkage mechanism includes a steering link 52, one end of which is connected to the steering mechanism, and the other end is connected to the second flap assembly 3. When the flexible control rope 7 is tightened, it can drive the steering mechanism to rotate, thereby driving the steering link 52 and the second flap assembly 3 to rotate. The steering link 52 acts as a bridge between the steering mechanism and the second flap assembly 3, so that the driving force applied by the flexible control rope 7 on the steering mechanism is transmitted to the second flap assembly 3, thereby realizing the flipping movement of the second flap assembly 3. The steering link 52 has a simple structure and allows the power of the flexible control rope 7 to be transmitted more efficiently in a compact space.

[0065] The steering link 52 in this embodiment includes a first link 521 and a second link 522 connected at an angle, the first link 521 is fixedly connected to the steering pulley 51, and the second link 522 extends in the direction of the second flap assembly 3 and is connected to the second flap assembly 3, so as to drive the second flap assembly 3 to move. Specifically, the first link 521 is fixed to the steering pulley 51 through a fixed shaft, forming a transmission relationship between the steering pulley 51 and the steering link 52, so that when the steering pulley 51 rotates, the steering link 52 can be driven to rotate synchronously, thereby driving the second flap assembly 3 to flip. The specific fixing structure can be that the first link 521 is provided with a connecting hole, the connecting hole is aligned with the central through hole of the steering pulley 51, and the fixed shaft passes through the connecting hole and the central through hole of the steering pulley 51 to fix the two. In this embodiment, the first link 521 is fixed to one side of the second pulley 512.

[0066] The first connecting rod 521 and the second connecting rod 522 are integrally formed, which can reduce the number of parts and components, reduce the difficulty of assembly, and improve the structural stability of the steering connecting rod 52, thereby improving the transmission stability and transmission accuracy. Specifically, the steering connecting rod 52 is L-shaped or C-shaped as a whole.

[0067] refer to Figures 1 to 4 As shown, the transmission assembly in this embodiment further includes an elastic tension member 9 and a side plate 10, one end of the elastic tension member 9 is connected to the housing 1, and the other end is connected to the side plate 10, the side plate 10 is arranged in parallel with the steering link 52, the side plate 10 is fixedly connected to the second flap assembly 3, and the side plate 10 is also connected to the second link 522. The elastic tension member 9 pulls the second flap assembly 3 through the side plate 10. In this embodiment, two side plates 10 are provided, and two elastic tension members 9 are also provided, which are respectively provided on the left and right sides of the second flap assembly 3, and the two side plates 10 drive the second flap assembly 3 to flip at the same time.

[0068] The above structure makes the opening and closing of the second flap assembly 3 more stable, with less vibration and noise during the movement. At the same time, it can prevent the left and right sides of the second flap assembly 3 from being uneven after closing and having a gap with the housing 1, thereby improving the appearance of the range hood and preventing dust and oil smoke from entering the housing 1. When the flap mechanism is closed, the second flap assembly 3 is kept in a closed state by two elastic tensioning members 9 connected to the side panels 10. When the elastic force of the elastic tensioning members 9 is overcome by the force applied by the flexible control rope 7, the second flap assembly 3 begins to flip outward. 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 to ensure that there is no gap between the second flap assembly 3 and the housing 1.

[0069] 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.

[0070] like Figures 3 to 6 As shown, the transmission assembly further includes a synchronization shaft 54, one end of which is connected to the second connecting rod 522, and the other end is connected to the side plate 10. The side plate 10 is arranged in parallel with the steering connecting rod 52, and the two are connected by the synchronization shaft 54 ​​to achieve synchronous movement of the two. When the steering connecting rod 52 rotates, the side plate 10 is driven to rotate through the synchronization shaft 54, thereby driving the second flap assembly 3 to flip. In order to improve the transmission efficiency, the synchronization shaft 54 ​​is arranged horizontally, and its two ends are respectively connected to the side plate 10 and the second connecting rod 522 vertically, and the synchronization shaft 54 ​​is arranged at the lower part of the side plate 10.

[0071] 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.

[0072] 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.

[0073] like Figure 4As shown, 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, 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, and when the motor 41 starts to output power, the flexible control rope 7 will contract according to the rotation direction of the motor 41, thereby pulling the flap mechanism to open.

[0074] 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. 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 to flip open. The flexible control rope 7 is directly connected to the eccentric wheel 62 after passing through the steering pulley. When the driving assembly 4 drives the flexible control rope 7 to tighten, the steering pulley 51 around which the flexible control rope 7 is wound and the eccentric wheel 62 below will rotate at the same time, thereby driving the first flap assembly 2 and the second flap assembly 3 to flip open at the same time.

[0075] like Figure 7 As shown, the core feature of the eccentric wheel 62 is the eccentric design of its wheel shaft, 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.

[0076] Specifically, as the eccentric wheel 62 rotates, the eccentric wheel 62 has a first state, a second state and a third state. In the first state, the rotation radius of the eccentric wheel 62 is r1, in the second state, the rotation radius of the eccentric wheel 62 is r2, and in the third state, the rotation radius of the eccentric wheel 62 is r3, r3>r2>r1. It can be seen that as the eccentric wheel 62 rotates, the rotation radius of the eccentric wheel 62 gradually increases. According to the principle of lever, the force arm increases and the force decreases. Therefore, the eccentric wheel 62 has the advantage of saving effort. In this embodiment, the first state can correspond to the closed state of the flap mechanism, the second state can correspond to the half-open state in which the first flap assembly 2 and the second flap assembly 3 are opened to the full position at the same time, and the third state can correspond to the fully open state in which the first flap assembly 2 has stopped rotating relative to the second flap assembly 3 but the second flap assembly 3 continues to rotate to the maximum angle relative to the housing 1. 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.

[0077] 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 has 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 diameter means that the pulling point of the flexible control rope 7 is farther from the axis. According to the principle of leverage, this makes the force required to open the flap mechanism smaller, thereby improving the mechanical efficiency of the system.

[0078] Furthermore, as the eccentric wheel 62 continues to rotate, the increase in wheel diameter not only helps to save effort, but also can control the opening and closing speed, thereby achieving more precise control, while helping to reduce the vibration of the flap mechanism during the opening process, achieving more stable and precise control.

[0079] Alternatively, if Figure 7 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.

[0080] In one possible embodiment, Figure 8 and Fig. 9 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.

[0081] In another possible embodiment, Figure 8 and Fig. 9 As 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.

[0082] 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.

[0083] like Figure 7 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.

[0084] like Figure 6 and Figure 7 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.

[0085] Optionally, the connecting rod 63 and the eccentric wheel 62 are integrally formed, which simplifies the structure and facilitates assembly and processing.

[0086] Continue to refer Figures 1 to 4 As shown, a flexible driving mechanism is respectively 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 a constant tension of the flexible control rope 7, thereby ensuring the stable and reliable operation of the flap mechanism. Specifically, the driving assembly 4 is approximately located at the center position inside the shell 1, and a tensioning wheel 8, a transmission assembly, a power storage assembly and a flexible control rope 7 are respectively provided on both sides of the driving assembly 4. The tensioning wheel 8 is arranged between the driving assembly 4 and the transmission assembly, and the transmission assembly is located directly below the tensioning wheel 8 on the same side. The flexible control rope 7 passes through the top of the tensioning wheel 8 and then turns downward to connect to the transmission assembly below. Specifically, the flexible control rope 7 is connected to the steering pulley 51. As shown Figure 5 and Figure 6As shown, on the diverting pulley 51, the flexible control rope 7 first goes around the first pulley 511 for half a circle, then goes around the second pulley 512 for the first half a circle and continues to move, and is connected to the power storage assembly. This winding method allows the flexible control rope 7 to change the forward direction and effectively drive the diverting pulley 51 to rotate when tightened. In this embodiment, the tensioning wheel 8 can not only maintain the constant tension of the flexible control rope 7, but also play the role of a reversing wheel, changing the direction of travel of the flexible control rope 7. Through the ingenious layout of the tensioning wheel 8 and the diverting pulley 51, the tension of the flexible control rope 7 can be transmitted in a limited closed space, with a simple structure, easy to implement and maintain. The tensioning wheels 8 on both sides of the motor 41 ensure the synchronous drive of the flexible control ropes 7 on both sides, thereby ensuring that the flexible control ropes 7 can be evenly tightened or relaxed under the drive of the drive assembly 4, avoiding the system instability problem caused by inconsistent tension, and realizing precise control of the flap mechanism, thereby ensuring the stable opening and closing of the flap mechanism and improving the system stability.

[0087] In order to solve the problem of the fixed flip angle of the flap mechanism, the second flap assembly 3 is rotatably connected to the housing 1 through a fixed angle hinge 12. The second flap assembly 3 is equipped with a fixed angle hinge 12, and the rotation will stop after the flip angle reaches the set angle, thereby ensuring that the second flap assembly 3 can accurately stop at the predetermined position. It should be noted that the fixed angle hinge 12 is a structure already existing in the prior art, and its specific structure will not be repeated here.

[0088] like Fig.10 and Fig.11As shown, the range hood further includes a decorative central axis 11 disposed on the outside of the flap mechanism, the decorative central axis 11 being disposed between the first flap assembly 2 and the second flap assembly 3, and being used to cover the gap between the first flap assembly 2 and the second flap assembly 3, and ensuring that the first flap assembly 2 and the second flap assembly 3 do not expose the internal structure when rotating. The decorative central axis 11 includes a central axis body 111, a first decorative strip 112, and a second decorative strip 113, the central axis body 111 is fixedly connected to the second flap assembly 3, the second decorative strip 113 is fixedly connected to the first flap assembly 2, the first decorative strip 112 is movably disposed between the central axis body 111 and the second decorative strip 113, the upper portion of the first decorative strip 112 is kept overlapping with the lower portion of the central axis body 111, and the lower portion of the first decorative strip 112 is kept overlapping with the upper portion of the second decorative strip 113. In this structure, when the flap mechanism rotates, the design margins between the central axis body 111, the first decorative strip 112, and the second decorative strip 113 make the upper portion of the first decorative strip 112 always partially overlap with the lower portion of the central axis body 111, and the lower portion of the first decorative strip 112 always partially overlap with the upper portion of the second decorative strip 113, ensuring that no gap is exposed, thereby maintaining a neat and beautiful appearance. In this embodiment, the central axis body 111 is directly attached to the lower edge of the second flap assembly 3, and the second decorative strip 113 is directly attached to the upper edge of the first flap assembly 2.

[0089] To achieve the above-mentioned overlapping structure, the upper part of the first decorative strip 112 and the lower part of the central axis body 111, and the lower part of the first decorative strip 112 and the upper part of the second decorative strip 113 respectively overlap each other. Specifically, the upper part of the first decorative strip 112 covers the outer side of the lower part of the central axis body 111, and the upper part of the second decorative strip 113 covers the outer side of the lower part of the first decorative strip 112; or, the lower part of the central axis body 111 covers the outer side of the upper part of the first decorative strip 112, and the lower part of the first decorative strip 112 covers the outer side of the upper part of the second decorative strip 113.

[0090] Regarding the connection method between the central axis body 111, the first decorative strip 112 and the second decorative strip 113, the first decorative strip 112 in this embodiment is a metal strip, and a magnet 114 is embedded in the central axis body 111, and the first decorative strip 112 and the magnet 114 are magnetically connected. In other words, there is no connection structure between the central axis body 111, the first decorative strip 112 and the second decorative strip 113, but magnetic adsorption is achieved by the first decorative strip 112 and the magnet 114 in the central axis body 111, and combined with the above-mentioned covering structure, the first decorative strip 112 can flexibly rotate between the central axis body 111 and the second decorative strip 113, and can always maintain overlap with the central axis body 111 and the second decorative strip 113, so as to ensure that the gap between the first flap assembly 2 and the second flap assembly 3 is not exposed, and the internal structure is prevented from being exposed. The material of the central axis body 111 and the second decorative strip 113 can be metal or non-metallic material, which is not limited in this embodiment.

[0091] The assembly surface between the central axis body 111 and the first decorative strip 112 and the assembly surface between the first decorative strip 112 and the second decorative strip 113 are both in an arc shape.

[0092] The length of the central axis body 111 is the same as that of the first flap assembly 2 , that is, the two ends of the central axis body 111 are flush with the two ends of the flap mechanism. A receiving groove is provided inside the central axis body 111 for supporting and fixing the power storage spring 61 and the eccentric wheel 62 .

[0093] The opening process of the flap mechanism of the range hood is briefly described below.

[0094] The motor 41 starts, and the motor 41 transmits power through two flexible control ropes 7. When the flexible control rope 7 contracts, the steering pulley and the eccentric wheel 62 will rotate at the same time, driving the first flap assembly 2 and the second flap assembly 3 to open at the same time. As the first flap assembly 2 opens, the power storage spring 61 gradually tightens until it reaches its contraction limit, at which time the first flap assembly 2 stops rotating; the flexible control rope 7 continues to tighten, driving the second flap assembly 3 to continue to flip outward. The second flap assembly 3 is equipped with a fixed angle hinge 12. The second flap assembly 3 will stop rotating after reaching the set angle to ensure that the second flap assembly 3 can accurately stop at the predetermined position. When the second flap assembly 3 rotates into place, the motor 41 receives a signal to stop rotating and locks the current position to maintain the stability of the flap mechanism. The flexible drive mechanism can not only open the first flap assembly 2 and the second flap assembly 3 at the same time, but also stop the first flap assembly 2 before the second flap assembly 3.

[0095] The range hood in this embodiment uses a motor 41 in conjunction with a flexible control rope 7 and a transmission assembly, replacing the traditional push rod motor direct push method, to achieve a smooth flipping of the flap mechanism. All parts of the flexible drive mechanism in the range hood are hidden inside the shell 1, achieving a neat appearance and effective use of space. The hidden structural layout also simplifies the maintenance process, reduces the difficulty of cleaning, and further improves the user experience. The layout of the transmission assembly allows the tension to be transmitted in a limited enclosed space through the clever winding of the flexible control rope 7, thereby driving the flap mechanism to open. 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 motor 41 achieves precise control of the flap mechanism by synchronously driving the flexible control ropes 7 on both sides, ensuring the stable opening and closing of the flap mechanism.

[0096] 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.

[0097] 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 is arranged inside the shell (1), and comprises a driving component (4), a transmission component, a power storage component and a flexible control rope (7). One end of the power storage component is connected to the first flap component (2), and the other end is connected to the second flap component (3). One end of the transmission component is connected to the shell (1), and the other end is connected to the second flap component (3). One end of the flexible control rope (7) is connected to the output end of the driving component (4), and the other end passes through the transmission component and is connected to the power storage component. When the flexible control rope (7) is tightened, it can drive the transmission component and the power storage component to rotate simultaneously, thereby driving the first flap component (2) and the second flap component (3) to flip open simultaneously.

2. The range hood according to claim 1, characterized in that: The transmission assembly comprises a steering mechanism, which is connected to the housing (1). After the flexible control rope (7) passes through the steering mechanism, its travel direction is changed so as to be connected to the power storage assembly.

3. The range hood according to claim 2, characterized in that: The steering mechanism comprises a steering pulley (51), the extension direction of the central axis of the steering pulley (51) is parallel to the extension direction of the rotation center of the power storage component, and the flexible control rope (7) is connected to the power storage component after being wound around the steering pulley (51).

4. The range hood according to claim 3, characterized in that: The steering pulley (51) comprises a first pulley (511) and a second pulley (512) which are coaxially arranged, the diameter of the first pulley (511) is larger than the diameter of the second pulley (512), and the wheel groove on the first pulley (511) is connected to the wheel groove on the second pulley (512), and the flexible control rope (7) is sequentially wound around the first pulley (511) and the second pulley (512) and then connected to the power storage assembly.

5. The range hood according to claim 4, characterized in that: The first pulley (511) and the second pulley (512) are an integrally formed structure.

6. The range hood according to claim 2, characterized in that: The transmission assembly further comprises a linkage mechanism, one end of which is connected to the steering mechanism and the other end of which is connected to the second flap assembly (3); the linkage mechanism can move in response to the rotation of the steering mechanism, thereby driving the second flap assembly (3) to flip.

7. The range hood according to claim 6, characterized in that: The linkage mechanism comprises a steering link (52), one end of the steering link (52) is connected to the steering mechanism, and the other end is connected to the second flap assembly (3). When the flexible control rope (7) is tightened, it can drive the steering mechanism to rotate, thereby driving the steering link (52) and the second flap assembly (3) to rotate.

8. The range hood according to claim 7, characterized in that: The steering link (52) comprises a first link (521) and a second link (522) connected at an angle, the first link (521) being fixedly connected to the steering mechanism, and the second link (522) extending in the direction of the second flap assembly (3) and connected to the second flap assembly (3).

9. The range hood according to claim 8, characterized in that: The linkage mechanism also includes an elastic tensioning member (9) and a side plate (10), one end of the elastic tensioning member (9) is connected to the housing (1), and the other end is connected to the side plate (10), the side plate (10) is arranged parallel to the steering link (52), the side plate (10) is fixedly connected to the second flap assembly (3), and the side plate (10) is also connected to the second link (522).

10. The range hood according to claim 9, characterized in that: The linkage mechanism further comprises a synchronization shaft (54), one end of which is connected to the second connecting rod (522), and the other end of which is connected to the side plate (10).

11. The range hood according to any one of claims 1 to 10, 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) to flip open.

12. The range hood according to any one of claims 1 to 10, characterized in that: The range hood further comprises a decorative central axis (11) arranged on the outer side of the flap mechanism, the decorative central axis (11) being arranged between the first flap assembly (2) and the second flap assembly (3) and being used for covering the gap between the first flap assembly (2) and the second flap assembly (3), the decorative central axis (11) comprising a central axis body (111), a first decorative strip (112) and a second decorative strip (113), the central axis body (111) being fixedly connected to the second flap assembly (3), the second decorative strip (113) being fixedly connected to the first flap assembly (2), the first decorative strip (112) being movably arranged between the central axis body (111) and the second decorative strip (113), the upper part of the first decorative strip (112) being kept overlapping with the lower part of the central axis body (111), and the lower part of the first decorative strip (112) being kept overlapping with the upper part of the second decorative strip (113).

13. The range hood according to claim 12, characterized in that: The upper portion of the first decorative strip (112) covers the outer side of the lower portion of the central axis body (111), and the upper portion of the second decorative strip (113) covers the outer side of the lower portion of the first decorative strip (112); Or, the lower part of the central axis body (111) covers the outer side of the upper part of the first decorative strip (112), and the lower part of the first decorative strip (112) covers the outer side of the upper part of the second decorative strip (113); And / or, the first decorative strip (112) is a metal strip, a magnet (114) is embedded in the central axis body (111), and the first decorative strip (112) and the magnet (114) are magnetically connected; And / or, the assembly surface between the central axis body (111) and the first decorative strip (112), and the assembly surface between the first decorative strip (112) and the second decorative strip (113) are both in an arc shape.

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