A turning plate assembly for a range hood and a range hood

Abstract

The utility model discloses a fender assembly and range hood for range hood belongs to the technical field of home appliances, and the utility model discloses a fender assembly and range hood for range hood to solve the existing intermediate connecting rod and design the problem of easy bending. The utility model discloses a fender assembly and range hood for range hood include: fender, drive rotary rod is connected to fender, and drive rotary rod can drive fender swing when rotating around swing pivot, intermediate connecting rod, one end is connected to the swing pivot of drive rotary rod, passive rotary rod is connected to the other end of intermediate connecting rod and rotation point support is used for limiting the degree of freedom of radial movement of intermediate connecting rod. The utility model discloses a fender assembly and range hood for range hood, and rotation point support can limit the degree of freedom of radial movement of intermediate connecting rod, can avoid the bending deformation of intermediate connecting rod, ensures that intermediate connecting rod forms rigid connection with drive rotary rod and passive rotary rod respectively, and the transmission capacity is strong, ensures that passive rotary rod can keep synchronous rotation with drive rotary rod through intermediate connecting rod all the time, and the use experience is good.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, and in particular to a flap assembly for a range hood and a range hood. Background Technology

[0002] A range hood is a household appliance that uses negative pressure generated by a fan to collect and exhaust cooking fumes. To improve the fume collection effect, some range hoods are now equipped with a flap. When the flap is open, the fume collection chamber is exposed, and the rising fumes are sucked into the chamber after hitting the flap. When the flap is closed, it covers the fume collection chamber, preventing foreign objects from entering, making the range hood safer to use and more aesthetically pleasing.

[0003] To open and close the flap, existing range hoods typically include a rotary motor or push rod motor as a drive mechanism. The output of this drive mechanism is connected to the flap via a rotating rod. When the output of the drive mechanism moves, it causes the rotating rod to swing, and the flap swings synchronously with the rotating rod, thus opening and closing the flap. To ensure more even force distribution on the flap, existing range hoods usually have two sets of rotating rods, connected to the left and right sides of the flap respectively. To reduce costs, existing range hoods typically only have one drive mechanism, with an intermediate connecting rod connecting the two sets of rotating rods. The output of the drive mechanism is connected to one of the rotating rods. The rotating rod connected to the output of the drive mechanism is the active rotating rod, and the other rotating rod is the driven rotating rod. The active rotating rod rotates under the drive mechanism's influence, and the intermediate connecting rod rotates with the active rotating rod, thus transmitting the rotation to the driven rotating rod.

[0004] Existing range hoods have several drawbacks: the two ends of the central connecting rod are directly connected to the active and passive rotating rods, respectively. The flaps are typically large to improve smoke extraction, and correspondingly, the central connecting rod usually has a large span and its circumference is suspended. Therefore, the central connecting rod has a degree of freedom to move radially, meaning it can bend, leading to a decrease in transmission capacity. The synchronization between the passive and active rotating rods deteriorates, causing the flaps to open and close at different speeds, resulting in the passive rotating rod being unable to provide support for the flaps. This causes the flaps to tilt, resulting in a poor user experience. Utility Model Content

[0005] The purpose of this utility model is to propose a flap assembly for a range hood and a range hood that solves the problem of easy bending of the existing middle connecting rod, resulting in a better user experience.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A flap assembly for a range hood includes: a flap; an active rotating rod connected to the flap, the active rotating rod having a swing shaft, the active rotating rod rotating around the swing shaft causing the flap to swing; an intermediate connecting rod, one end connected to the swing shaft of the active rotating rod, the intermediate connecting rod swinging synchronously with the active rotating rod; a passive rotating rod connected to the other end of the intermediate connecting rod, the active rotating rod driving the passive rotating rod to swing synchronously through the intermediate connecting rod; and a rotation point bracket for restricting the radial movement degree of freedom of the intermediate connecting rod.

[0008] In one preferred embodiment, the rotating point support includes an upper cover and a base, which, when fastened together, form a limiting space for the intermediate connecting rod to pass through.

[0009] In one preferred embodiment, the swing shaft is disposed on the side of the active rotating rod, and the rotating point bracket is provided with a circular rotating through hole. After passing through the rotating through hole, the swing shaft is fixedly connected to one end of the intermediate connecting rod, and the intermediate connecting rod can rotate synchronously with the swing shaft.

[0010] In one preferred embodiment, the outer periphery of the swing shaft includes a planar area and an arcuate area, and a pin hole is provided on the planar area.

[0011] In one preferred embodiment, the intermediate connecting rod includes a rod body with a notch at one end, the swing shaft passing through the notch, and the planar area abutting the side of the notch; the rod body has a rod connection hole at one end that is aligned with the pin hole.

[0012] In one preferred embodiment, the rotating point support includes an upper cover and a base. The upper cover has an upper cover half hole, and the base has a base half hole. After the upper cover and the base are fastened together, the upper cover half hole and the base half hole form a limiting space for the intermediate connecting rod to pass through.

[0013] In one preferred embodiment, the intermediate connecting rod includes at least two rod bodies, and an intermediate support is connected between two adjacent rod bodies; the range hood flap assembly includes at least three rotation point brackets, and one intermediate support is inserted into one of the rotation point brackets.

[0014] In one preferred embodiment, the cross-section of the intermediate support portion perpendicular to the axis is circular, and the cross-sectional area of ​​the intermediate support portion is smaller than the cross-sectional area of ​​the rod body.

[0015] In one preferred embodiment, the range hood flap assembly includes a drive member, the active rotating rod is provided with a drive hinge hole, and the output shaft of the drive member is hinged to the drive hinge hole.

[0016] On the other hand, the present invention adopts the following technical solution:

[0017] A range hood includes a smoke collection chamber, and the range hood also includes the aforementioned range hood flap assembly. A rotating bracket is connected to the smoke collection chamber, and the flap can open or close the smoke collection chamber by swinging.

[0018] The disclosed range hood flap assembly includes a rotating point bracket, which restricts the radial movement of the intermediate connecting rod. While not affecting the rotational freedom of the intermediate connecting rod around its axis, it prevents bending and deformation of the intermediate connecting rod, ensuring a rigid connection between the intermediate connecting rod and both the active and passive rotating rods. This results in strong transmission capability, ensuring the passive rotating rod rotates synchronously with the active rotating rod via the intermediate connecting rod. The passive rotating rod maintains support for the flap, resulting in a more stable spatial posture when the flap is open and closed, preventing tilting and providing a better user experience.

[0019] The range hood disclosed in this utility model includes the above-mentioned flap assembly for range hoods. While not affecting the rotational freedom of the intermediate connecting rod around the axis, the rotation point support can prevent the intermediate connecting rod from bending and deforming, and has strong transmission capacity, making the flap swing more stable. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the range hood provided in a specific embodiment of this utility model;

[0021] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the active rotating rod provided in a specific embodiment of the present invention;

[0023] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the top cover provided in a specific embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the base provided in a specific embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the intermediate connecting rod provided in a specific embodiment of this utility model;

[0027] Figure 8 yes Figure 7 A magnified view of a section at point C.

[0028] In the picture:

[0029] 1. Flip plate; 2. Active rotating rod; 3. Intermediate connecting rod; 4. Passive rotating rod; 5. Rotation point bracket; 6. Driving component; 7. Smoke collection chamber; 21. Swing shaft; 22. Drive hinge hole; 23. Flip plate mounting surface; 31. Rod body; 32. Notch; 33. Side; 34. Rod connection hole; 35. Intermediate support part; 51. Top cover; 52. Base; 61. Output shaft; 211. Flat area; 212. Curved area; 213. Pin hole; 511. Top cover half hole; 512. Vertical pressure part; 513. Flat pressure part; 514. Top cover fixing hole; 521. Base half hole; 522. Base fixing hole; 523. Groove; 524. Frame; 525. Boss; 526. Limiting space. Detailed Implementation

[0030] To make the above-mentioned objectives, 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] This embodiment discloses a flap assembly for a range hood and a range hood including the flap assembly, capable of extracting and exhausting cooking fumes. Figure 1 and Figure 2 As shown, the range hood also includes a smoke collection chamber 7, and the flap assembly is connected to the smoke collection chamber 7 via a rotating bracket 5.

[0037] like Figures 1 to 4 As shown, the range hood flap assembly includes a flap 1, an active rotating rod 2, an intermediate connecting rod 3, a passive rotating rod 4, a rotating point bracket 5, and a driving component 6. The active rotating rod 2 and the passive rotating rod 4 are respectively connected to the flap 1. Specifically, the active rotating rod 2 is provided with a flap mounting surface 23, and the flap 1 is fixedly connected to the flap mounting surface 23 by bolts or other connecting components.

[0038] The active rotating rod 2 is equipped with a swing shaft 21. One end of the intermediate connecting rod 3 is connected to the swing shaft 21 of the active rotating rod 2, and the other end of the intermediate connecting rod 3 is connected to the passive rotating rod 4. When the active rotating rod 2 swings, the intermediate connecting rod 3 can swing synchronously with the active rotating rod 2, and the passive rotating rod 4 swings synchronously with the intermediate connecting rod 3. That is, the active rotating rod 2 drives the passive rotating rod 4 to swing synchronously through the intermediate connecting rod 3. When the active rotating rod 2 rotates around the swing shaft 21, it can drive the flap 1 to swing, and the swing of the flap 1 can open or close the smoke collection chamber 7.

[0039] In existing technology, the two ends of the intermediate connecting rod 3 are directly connected to the active rotating rod 2 and the passive rotating rod 4. The intermediate connecting rod 3 has both rotational freedom around its axis and radial freedom of movement, meaning that bending and deformation of the intermediate connecting rod 3 results in poor transmission capacity. In this embodiment, a rotating point bracket 5 is added to the range hood, which can restrict the radial freedom of movement of the intermediate connecting rod 3. While not affecting the rotational freedom of the intermediate connecting rod 3 around its axis, it can prevent bending and deformation of the intermediate connecting rod 3, ensuring that the intermediate connecting rod 3 forms a rigid connection with the active rotating rod 2 and the passive rotating rod 4 respectively, resulting in strong transmission capacity. It also ensures that the passive rotating rod 4 can always rotate synchronously with the active rotating rod 2 through the intermediate connecting rod 3, and that the passive rotating rod 4 can maintain the supporting force on the flap 1. The flap 1 has a more stable spatial posture when opening and closing, resulting in a better user experience.

[0040] The specific structure of the active rotating rod 2 is not limited, as long as it can drive the flap 1 to swing. In this embodiment, a cylindrical swing shaft 21 is provided on the side of the active rotating rod 2. A circular rotating through hole is provided on the rotating point bracket 5. After the swing shaft 21 passes through the rotating through hole, it is fixedly connected to one end of the intermediate connecting rod 3. The intermediate connecting rod 3 can rotate synchronously with the swing shaft 21. The rotating through hole can limit the swing shaft 21 in the radial direction, preventing the swing shaft 21 from moving or bending in the radial direction.

[0041] Based on the above structure, the outer periphery of the pendulum shaft 21 includes a flat area 211 and an arc-shaped area 212. The flat area 211 is used to connect the intermediate connecting rod 3, and it can prevent the intermediate connecting rod 3 and the pendulum shaft 21 from rotating relative to each other around the axis, resulting in better transmission. A pin hole 213 is provided on the flat area 211 for fixing the intermediate connecting rod 3, making the overall structure more stable and easy to assemble and disassemble. The arc-shaped area 212 is used to fit the rotation through hole on the rotation point bracket 5, ensuring that the pendulum shaft 21 can rotate smoothly around the axis within the rotation through hole.

[0042] The active rotating rod 2 is also provided with a drive hinge hole 22, and the output shaft 61 of the drive component 6 is hinged to the drive hinge hole 22. When the output shaft 61 extends or retracts, it can drive the active rotating rod 2 to swing around the swing shaft 21. The rotational connection structure between the output shaft 61 and the drive hinge hole 22 ensures that the two will not get stuck, making the opening and closing of the flap 1 smoother and providing a better user experience.

[0043] The specific structure of the rotation point support 5 is not limited, as long as it can restrict the radial movement of the intermediate connecting rod 3. In this embodiment, for example... Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the rotating point support 5 includes an upper cover 51 and a base 52. The upper cover 51 includes a vertical pressure part 512 and two flat pressure parts 513, which are spaced apart on the same plane. The vertical pressure part 512 and the flat pressure part 513 are L-shaped. The main body of the base 52 is flat, and a frame 524 and a boss 525 are provided on the flat body. A limiting space 526 is formed between the frame 524 and the boss 525. After the upper cover 51 and the base 52 are assembled, the notch between the two flat pressure parts 513 is aligned with the limiting space 526. The intermediate connecting rod 3 passes through the notch between the two flat pressure parts 513 and the limiting space 526, and the degree of freedom of the intermediate connecting rod 3 to move radially is restricted. It is understandable that the gap between the two flat pressing parts 513 and the limiting space 526 can completely wrap around the outer periphery of the intermediate connecting rod 3 (encircling the outer periphery of the intermediate connecting rod 3 360°), or wrap around part of the outer periphery of the intermediate connecting rod 3 (the angle of wrapping around the outer periphery of the intermediate connecting rod 3 is greater than or equal to 180° and less than 360°), both of which can restrict the degree of freedom of the intermediate connecting rod 3 to move radially.

[0044] Each flat pressing part 513 has a top cover fixing hole 514, and the frame 524 and the boss 525 have base fixing holes 522. During assembly, the base 52 is fixedly connected to the smoke collection chamber 7. After the top cover fixing hole 514 is aligned with the base fixing hole 522, the top cover 51 and the base 52 are fixedly connected by screws.

[0045] A top cover half-hole 511 is provided on the edge of the upright pressure part 512 and between the two flat pressure parts 513; a groove 523 is provided on the base 52, and base half-holes 521 are respectively opened on the top edge of the two side walls of the groove 523. After the top cover 51 and the base 52 are fastened together, the top cover half-hole 511 and the base half-hole 521 form a rotating through hole. During assembly, the end of the active rotating rod 2 is inserted into the groove 523, the swing shaft 21 is placed in the base half-hole 521, the top cover 51 is fastened, and the top cover half-hole 511 presses on the swing shaft 21. The rotating through hole formed by the top cover half-hole 511 and the base half-hole 521 restricts the swing shaft 21 from moving radially without affecting the rotation of the swing shaft 21 around the axis, ensuring that the active rotating rod 2 can drive the passive rotating rod 4 to swing synchronously through the intermediate connecting rod 3.

[0046] It is understandable that, apart from the structure connected to the drive component 6, the structure of the passive rotating rod 4 is the same as that of the active rotating rod 2, and the connection structure between the passive rotating rod 4 and the rotation point support 5 is also the same as the connection structure between the active rotating rod 2 and the rotation point support 5, which will not be described in detail here.

[0047] The specific number of rotating point supports 5 in this range hood is not limited and can be determined according to the length of the intermediate connecting rod 3. When the intermediate connecting rod 3 is short, only one rotating point support 5 needs to be set at each end of the intermediate connecting rod 3, which is low cost; when the intermediate connecting rod 3 is long, in addition to the ends, at least one rotating point support 5 needs to be set in the middle of the intermediate connecting rod 3 to prevent the middle of the intermediate connecting rod 3 from bending radially.

[0048] When the intermediate connecting rod 3 is relatively long, such as Figure 1 , Figure 7 and Figure 8 As shown, the intermediate connecting rod 3 includes at least two rod bodies 31, and an intermediate support 35 connects adjacent rod bodies 31. The flap assembly includes at least three rotation point brackets 5, two of which are respectively disposed at both ends of the intermediate connecting rod 3, and each intermediate support 35 passes through a rotation point bracket 5, thereby restricting the degree of freedom of the intermediate support 35 to move radially.

[0049] To avoid affecting the smoothness of the intermediate connecting rod 3's rotation around the axis due to the setting of the rotation point bracket 5, the intermediate support part 35 has a circular cross-section perpendicular to the axis. The intermediate support part 35 passes through the rotation through hole formed by the upper cover half hole 511 and the base half hole 521. The cylindrical structure ensures that the rotation through hole will not affect the rotation of the intermediate connecting rod 3 around the axis.

[0050] To avoid reducing the strength of the intermediate connecting rod 3, the cross-sectional area of ​​the intermediate support part 35 is smaller than that of the rod body 31. That is, at the location where there is no need to set the rotation point bracket 5, the rod body 31 is relatively thick, has a strong load-bearing capacity, and is suitable for flip plates 1 of various weights.

[0051] Based on the above structure, such as Figure 1 , Figure 4 , Figure 7 and Figure 8 As shown, a notch 32 is provided at the end of the rod body 31, and the swing shaft 21 passes through the notch 32. Specifically, the planar area 211 abuts against the side 33 of the notch 32 to prevent relative rotation between the intermediate connecting rod 3 and the swing shaft 21 around the axis, resulting in good transmission effect. A rod connecting hole 34 is provided at the end of the rod body 31, which is aligned with the pin connection hole 213. During assembly, connecting parts such as pins and bolts are inserted into the pin connection hole 213 and the rod connecting hole 34 to achieve a stable connection between the active rotating rod 2 and the intermediate connecting rod 3, making disassembly and assembly convenient; the active rotating rod 2 and the intermediate connecting rod 3 can rotate synchronously, resulting in good transmission efficiency.

[0052] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A flap assembly for a range hood, characterized in that, include: Flip-board (1); An active rotating rod (2) is connected to the flap (1). The active rotating rod (2) is provided with a swing shaft (21). When the active rotating rod (2) rotates around the swing shaft (21), it can drive the flap (1) to swing. The intermediate connecting rod (3) is connected at one end to the swing shaft (21) of the active rotating rod (2). When the active rotating rod (2) swings, the intermediate connecting rod (3) can swing synchronously with the active rotating rod (2). A passive rotating rod (4) is connected to the other end of the intermediate connecting rod (3), and the active rotating rod (2) drives the passive rotating rod (4) to rotate synchronously through the intermediate connecting rod (3); and, Rotation point support (5) is used to restrict the degree of freedom of the intermediate link (3) to move radially.

2. The flap assembly for a range hood according to claim 1, characterized in that, The rotating point support (5) includes an upper cover (51) and a base (52). When the upper cover (51) and the base (52) are fastened together, they form a limiting space (526) for the intermediate connecting rod (3) to pass through.

3. The flap assembly for a range hood according to claim 1, characterized in that, The swing shaft (21) is located on the side of the active rotating rod (2). The rotating point bracket (5) is provided with a circular rotating through hole. After the swing shaft (21) passes through the rotating through hole, it is fixedly connected to one end of the intermediate connecting rod (3). The intermediate connecting rod (3) can rotate synchronously with the swing shaft (21).

4. The flap assembly for a range hood according to claim 3, characterized in that, The outer periphery of the swing shaft (21) includes a planar area (211) and an arc area (212), and a pin hole (213) is provided on the planar area (211).

5. The flap assembly for a range hood according to claim 4, characterized in that, The intermediate connecting rod (3) includes a rod body (31), with a notch (32) at the end of the rod body (31), the swing shaft (21) passing through the notch (32), and the planar area (211) abutting against the side (33) of the notch (32); the rod body (31) has a rod connecting hole (34) aligned with the pin hole (213) at the end of the rod body (31).

6. The flap assembly for a range hood according to claim 3, characterized in that, The rotating point support (5) includes an upper cover (51) and a base (52). The upper cover (51) has an upper cover half hole (511), and the base (52) has a base half hole (521). After the upper cover (51) and the base (52) are fastened together, the upper cover half hole (511) and the base half hole (521) form a limiting space (526) for the intermediate connecting rod (3) to pass through.

7. The flap assembly for a range hood according to any one of claims 1 to 6, characterized in that, The intermediate connecting rod (3) includes at least two rod bodies (31), and an intermediate support (35) is connected between two adjacent rod bodies (31); the range hood flap assembly includes at least three rotating point brackets (5), and one intermediate support (35) is inserted into one rotating point bracket (5).

8. The flap assembly for a range hood according to claim 7, characterized in that, The intermediate support part (35) has a circular cross-section perpendicular to the axis, and the cross-sectional area of ​​the intermediate support part (35) is smaller than the cross-sectional area of ​​the rod body (31).

9. The flap assembly for a range hood according to any one of claims 1 to 6, characterized in that, The range hood flap assembly includes a drive component (6), and the active rotating rod (2) is provided with a drive hinge hole (22). The output shaft (61) of the drive component (6) is hinged to the drive hinge hole (22).

10. A range hood, including a smoke collection chamber (7), characterized in that, The range hood further includes a flap assembly for a range hood as described in any one of claims 1 to 9, wherein the rotating point bracket (5) is connected to the smoke collection chamber (7), and the flap (1) can open or close the smoke collection chamber (7) by swinging.

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