Smoke baffle driving structure and range hood
By designing a smoke baffle drive structure, the connecting rod is automatically retracted when the smoke baffle is opened, solving the problems of user collision and oil stains caused by exposed connecting rods in traditional range hoods, and improving the reliability and lifespan of the drive mechanism.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-09
AI Technical Summary
In traditional European-style or near-suction range hoods, the drive rod or connecting rod of the smoke baffle is exposed on the outside of the casing, which can easily cause scratches, oil stains, and cleaning dead spots, affecting the reliability of the drive mechanism.
A smoke baffle drive structure was designed. By limiting the second connection point in the closed state to the positive direction side of the first connection point along the Z-axis, when the smoke baffle starts to open from the closed state, the connecting rod is naturally retracted into the range hood as the smoke baffle bracket rotates, and the exposed length of the connecting rod is significantly reduced.
It significantly reduces the exposed length of the connecting rod, lowers the risk of collision for users and the area of oil adhesion, and improves the reliability and service life of the drive mechanism.
Smart Images
Figure CN224340199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of range hoods, and in particular to a smoke baffle drive structure and a range hood. Background Technology
[0002] In traditional European-style or near-suction range hoods, an electric push rod drive structure or linkage mechanism is often used to drive the baffle plate to rotate around an axis in order to achieve the opening and closing function of the baffle plate.
[0003] In the aforementioned method of opening and closing the smoke baffle, the push rods or connecting rods used for driving are largely exposed on the outside of the housing. Although this meets the needs of movement, on the one hand, the rods or connecting rods in motion are exposed in the user's operating area, which can easily cause limbs to be scratched during cleaning or cooking. On the other hand, the exposed structure is prone to oil stains and has many hard-to-clean corners, which will accelerate the aging of components and affect the reliability of the drive mechanism. Utility Model Content
[0004] Therefore, it is necessary to address the issue that the push rod or connecting rod of the current smoke baffle opening and closing drive method has a large volume exposed on the outside of the housing, and to provide a smoke baffle drive structure and range hood with a relatively small exposed volume of the connecting rod.
[0005] This application first provides a smoke baffle driving structure, including a side plate, a smoke baffle, and a driving structure;
[0006] The driving structure includes a smoke baffle bracket fixed to the smoke baffle, a connecting rod, and a driving component fixed relative to the side plate. A first connection point on the smoke baffle bracket is rotatably connected to the side plate. One end of the connecting rod is hinged to a second connection point on the smoke baffle bracket, and the other end is connected to the driving component, so as to drive the smoke baffle to switch between an open state and a closed state through the driving component.
[0007] In the closed state, the second connection point is located on the positive side of the first connection point along the Z-axis.
[0008] In one embodiment, the line connecting the first connection point and the second connection point is parallel to the smoke baffle.
[0009] In one embodiment, the linkage includes a first linkage segment and a second linkage segment. The first linkage segment is hinged to the smoke baffle bracket, and the second linkage segment is connected to the drive member. In the closed state, at least a portion of the first linkage segment is parallel to the line connecting the first connection point and the second connection point.
[0010] In one embodiment, the first link segment further includes a third link segment and a fourth link segment. The third link segment is hinged to the smoke baffle bracket, and the fourth link segment connects the third link segment and the second link segment. In the closed state, the fourth link segment is parallel to the line connecting the first connection point and the second connection point. The third link segment, the fourth link segment, and the second link segment are Z-shaped.
[0011] In one embodiment, the side plate is bent inward to form a flange, and the projection of the connecting rod along any direction parallel to the side plate is completely located within the flange.
[0012] In one embodiment, the connecting rod is located in a third direction between the side plate and the smoke baffle bracket.
[0013] In one embodiment, the drive structure further includes a crank, the drive component is a motor, one end of the crank is fixed to the output shaft of the motor, and the other end is hinged to the connecting rod.
[0014] In one embodiment, the drive structure further includes a U-shaped hinge seat fixed relative to the side plate, the output shaft passing through the hinge seat and forming two rotational connection points, and the crank located inside the U-shape of the hinge seat.
[0015] In one embodiment, the side plate is further fixed with a support base, which is used to abut against the smoke baffle to position it in a closed state.
[0016] This application also provides a range hood, including the above-described smoke baffle drive structure.
[0017] The aforementioned smoke baffle drive structure restricts the second connection point in the closed state to be located on the positive side of the first connection point along the Z-axis. This ensures that when the smoke baffle starts to open from the closed state, the second connection point moves towards the inside of the range hood as the smoke baffle bracket rotates. As the second connection point moves, the connecting rod is naturally retracted into the inside of the range hood, significantly reducing the exposed length of the connecting rod. Attached Figure Description
[0018] Figure 1 This is a perspective view of the smoke baffle drive structure of this application in the open state;
[0019] Figure 2 for Figure 1 A three-dimensional view of the driving structure;
[0020] Figure 3 for Figure 2 A three-dimensional view of the drive structure in the off state from another angle;
[0021] Figure 4 for Figure 2 Front view after hiding the drive unit and hinge mount;
[0022] Figure 5 for Figure 3 Front view after hiding the drive unit and hinge mount;
[0023] Figure 6 This is a perspective view of another embodiment of the smoke baffle driving structure of this application.
[0024] Reference numerals: 100, side plate; 110, flange; 120, support base; 200, smoke baffle; 300, drive structure; 10, smoke baffle bracket; 11, first connection point; 12, second connection point; 20, connecting rod; 21, first connecting rod segment; 211, third connecting rod segment; 212, fourth connecting rod segment; 22, second connecting rod segment; 30, drive component; 40, crank; 50, hinge seat. Detailed Implementation
[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] For ease of description, in this application, the height direction of the range hood's smoke extraction port is defined as the Z-axis direction, and the upward side along the Z-axis direction is defined as the positive direction side of the Z-axis direction.
[0032] Please combine Figure 1 , Figure 2 as well as Figure 3 As shown, this application first provides a smoke baffle driving structure, including a side plate 100, a smoke baffle 200, and a driving structure 300; the driving structure 300 includes a smoke baffle bracket 10 fixed to the smoke baffle 200, a connecting rod 20, and a driving member 30 fixed relative to the side plate 100. A first connection point 11 on the smoke baffle bracket 10 is rotatably connected to the side plate 100. One end of the connecting rod 20 is hinged to a second connection point 12 on the smoke baffle bracket 10, and the other end is connected to the driving member 30, so as to drive the smoke baffle 200 to switch between an open state and a closed state through the driving member 30; in the closed state, the second connection point 12 is located on the positive direction side of the first connection point 11 along the Z-axis.
[0033] In this application, by restricting the second connection point 12 in the closed state to be located on the positive side of the first connection point 11 along the Z-axis, the smoke baffle 200 is able to open from the closed state. Figure 1 The smoke baffle bracket 10 rotates clockwise around the first connection point 11. In other words, the second connection point 12 moves closer to the inside of the range hood as the smoke baffle bracket 10 rotates. The connecting rod 20 is naturally retracted into the inside of the range hood as the second connection point 12 moves, so as to significantly reduce the exposed length of the connecting rod 20.
[0034] Please combine Figure 4 as well as Figure 5 As shown, in some embodiments, the line connecting the first connection point 11 and the second connection point 12 is parallel to the smoke baffle 200.
[0035] Specifically, the smoke baffle bracket 10 is L-shaped and includes a first plate and a second plate that are perpendicular to each other. The first connection point 11 and the second connection point 12 are both located on the first plate, and the smoke baffle 200 is fixed to the second plate. That is to say, the line connecting the first connection point 11 and the second connection point 12 is parallel to the second plate of the smoke baffle bracket 10.
[0036] By restricting the line connecting the first connection point 11 and the second connection point 12 to be parallel to the plane of the smoke baffle 200, the smoke baffle does not drift laterally when rotating around the first connection point 11. At this time, the driving force forms an efficient force transmission path, which also makes it easier for designers to design the transmission structure and reduces the design difficulty.
[0037] Please combine Figure 1 , Figure 4 as well as Figure 5 As shown, in some embodiments, the connecting rod 20 includes a first connecting rod segment 21 and a second connecting rod segment 22. The first connecting rod segment 21 is hinged to the smoke baffle bracket 10, and the second connecting rod segment 22 is connected to the drive member 30. In the closed state, at least a portion of the first connecting rod segment 21 is parallel to the line connecting the first connection point 11 and the second connection point 12 to reduce the space occupied by the connecting rod 20 in the closed state. In the open state, the second connecting rod segment 22 is completely hidden behind the oil filter of the range hood.
[0038] Please combine Figure 4 as well as Figure 5 As shown, in some embodiments, the first link segment 21 further includes a third link segment 211 and a fourth link segment 212. The third link segment 211 is hinged to the smoke baffle bracket 10, and the fourth link segment 212 connects the third link segment 211 and the second link segment 22. In the closed state, the fourth link segment 212 is parallel to the line connecting the first connection point 11 and the second connection point 12. The third link segment 211, the fourth link segment 212 and the second link segment 22 are Z-shaped.
[0039] The Z-shaped three-section structure forms a triangular mechanical configuration, which can effectively resist lateral vibration deformation, improve the structural strength of the connecting rod 20, and increase the service life of the connecting rod 20.
[0040] Please refer to Figure 6 As shown, in some embodiments, the side plate 100 is bent inward to form a flange 110, and the projection of the connecting rod 20 along any direction parallel to the side plate 100 is completely located within the flange 110.
[0041] By hiding the connecting rod 20 within the flange 110, the exposure angle and area of the connecting rod 20 can be further reduced, thereby reducing the risk of collision for users and the area of oil stain adhesion. On the other hand, the structural redundancy area within the side plate 100 is used to store and hide the connecting rod 20, thus improving space utilization.
[0042] Please refer to Figure 6 As shown, in some embodiments, the connecting rod 20 is located between the side plate 100 and the smoke baffle bracket 10 along a third direction; on the one hand, it can reduce the distance between the connecting rod 20 and the side plate 100, making it easier to hide the connecting rod 20 inside the flange 110 of the side plate 100; on the other hand, it can also avoid interference between the smoke baffle bracket 10 and the flange 110 during rotation.
[0043] Of course, in some embodiments, where space and structure permit, the smoke baffle bracket 10 may also be positioned between the side plate 100 and the connecting rod 20.
[0044] Please combine Figure 3 as well as Figure 5 As shown, in some embodiments, the drive structure 300 further includes a crank 40, the drive element 30 is a motor, one end of the crank 40 is fixed to the output shaft of the motor, and the other end is hinged to the connecting rod 20.
[0045] Specifically, when the motor is running, its output shaft drives the crank 40 to rotate, and the rotational motion is converted into the reciprocating swing of the smoke baffle 200 through the connecting rod 20, thereby switching between the closed and open states.
[0046] Preferably, the motor is a worm gear reducer motor.
[0047] Of course, in some other embodiments, the drive structure 300 may also use other drive elements or transmission structures to provide power to the connecting rod 20, as long as the connecting rod 20 can drive the smoke baffle bracket 10 to rotate around the first connection point 11. This application will not give examples of each one.
[0048] Please combine Figure 3 as well as Figure 5As shown, in some embodiments, the drive structure 300 further includes a U-shaped hinge seat 50 fixed relative to the side plate 100, with the output shaft passing through the hinge seat 50 and forming two rotational connection points, and the crank 40 located inside the U-shape of the hinge seat 50.
[0049] Specifically, two bushings are rotatably connected to the output shaft, and both bushings are fixed to the hinge seat 50.
[0050] Compared to traditional single-shaft support structures, radial runout of the motor output shaft can easily lead to motion jamming. This application, through a double-shaft sleeve design, provides stable support, thereby ensuring smooth operation of the output shaft.
[0051] It should be noted that in traditional designs, the rotation centers of the support base 120 and the smoke baffle 200 are mounted on different parts (for example, the support base 120 is located on the side plate 100, while the smoke baffle 200 is rotatably connected to the top plate of the range hood housing). Due to the accumulation of multiple datum tolerances, this type of structure has a misalignment when the smoke baffle 200 is closed, which can easily lead to a single-sided gap and make it difficult to close tightly.
[0052] Please refer to Figure 1 As shown, in some embodiments, the side plate 100 is also fixed with a support seat 120, which is used to abut against the smoke baffle 200 to position it in the closed state.
[0053] By setting both the support base 120 and the smoke baffle 200 on the side plate 100, the rotation center of the smoke baffle 200 and the support point of the smoke baffle 200 when it is closed are unified on the same reference plane. In other words, the two references are unified, thereby avoiding tolerance accumulation and preventing the smoke baffle 200 from having a single-sided gap when it is closed.
[0054] In some embodiments, the surface of the support base 120 is provided with a damping layer to reduce the impact noise when the smoke baffle 200 is closed, while providing elastic compensation to eliminate gaps caused by machining tolerances.
[0055] This application also provides a range hood, including the above-described smoke baffle drive structure.
[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A smoke baffle driving structure, characterized in that, Includes a side panel (100), a smoke baffle (200), and a drive structure (300); The drive structure (300) includes a smoke baffle bracket (10) fixed to the smoke baffle (200), a connecting rod (20), and a drive member (30) fixed relative to the side plate (100). The first connection point (11) on the smoke baffle bracket (10) is rotatably connected to the side plate (100). One end of the connecting rod (20) is hinged to the second connection point (12) on the smoke baffle bracket (10), and the other end is connected to the drive member (30) so as to drive the smoke baffle (200) to switch between an open state and a closed state through the drive member (30). In the closed state, the second connection point (12) is located on the positive direction side of the first connection point (11) along the Z-axis.
2. The smoke baffle driving structure according to claim 1, characterized in that, The line connecting the first connection point (11) and the second connection point (12) is parallel to the smoke baffle (200).
3. The smoke baffle driving structure according to claim 2, characterized in that, The connecting rod (20) includes a first connecting rod segment (21) and a second connecting rod segment (22). The first connecting rod segment (21) is hinged to the smoke baffle bracket (10), and the second connecting rod segment (22) is connected to the drive member (30). In the closed state, at least part of the first connecting rod segment (21) is parallel to the line connecting the first connection point (11) and the second connection point (12).
4. The smoke baffle driving structure according to claim 3, characterized in that, The first link segment (21) further includes a third link segment (211) and a fourth link segment (212). The third link segment (211) is hinged to the smoke baffle bracket (10). The fourth link segment (212) connects the third link segment (211) and the second link segment (22). In the closed state, the fourth link segment (212) is parallel to the line connecting the first connection point (11) and the second connection point (12). The third link segment (211), the fourth link segment (212) and the second link segment (22) are Z-shaped.
5. The smoke baffle driving structure according to claim 1, characterized in that, The side plate (100) is bent inward to form a flange (110), and the projection of the connecting rod (20) along any direction parallel to the side plate (100) is completely located within the flange (110).
6. The smoke baffle driving structure according to claim 5, characterized in that, The connecting rod (20) is located in the third direction between the side plate (100) and the smoke baffle bracket (10).
7. The smoke baffle driving structure according to claim 1, characterized in that, The drive structure (300) also includes a crank (40), the drive component (30) is a motor, one end of the crank (40) is fixed to the output shaft of the motor, and the other end is hinged to the connecting rod (20).
8. The smoke baffle driving structure according to claim 7, characterized in that, The drive structure (300) also includes a U-shaped hinge seat (50) fixed relative to the side plate (100), the output shaft passing through the hinge seat (50) and forming two rotational connection points, and the crank (40) located inside the U-shape of the hinge seat (50).
9. The smoke baffle driving structure according to claim 1, characterized in that, The side plate (100) is also fixed with a support (120), which is used to abut against the smoke baffle (200) to position it in the closed state.
10. A range hood, characterized in that, Includes the smoke baffle driving structure as described in any one of claims 1 to 9.