Opening and closing structure and range hood

Abstract

The utility model discloses an opening and closing structure which comprises a driving device, a limiting mechanism, a connecting rod mechanism and a baffle, the limiting mechanism comprises a support, the support is provided with a limiting structure, the connecting rod mechanism comprises a transmission rod assembly and a first swing rod, the transmission rod assembly is in transmission connection with the driving device, and the first swing rod is connected with the driving device. The first swing rod is hinged to the support and hinged to the transmission rod assembly, the driving device can drive the first swing rod to rotate around the support through the transmission rod assembly, the baffle is arranged on the first swing rod, and the baffle has an opening position and a closing position. The driving device can drive the baffle to be turned upwards to an opening position through the connecting rod mechanism and can drive the baffle to be turned downwards to a closing position, the limiting structure is arranged close to the rotating center of the first swing rod, and when the baffle is located at the opening position, the first swing rod can abut against the limiting structure for positioning. And the limiting effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to range hoods, and in particular to an opening and closing structure and a range hood. Background Art

[0002] The side-suction range hood has an openable and closable flap, which can expand the smoke collection range when opened. In order to expand the flipping range, the flap needs to be driven by a driving motor in conjunction with a multi-link mechanism, and the flap is also provided with a limiting mechanism to limit the opening and closing angle of the flap. In the existing technology, the opening and closing angle of the flap is controlled by the rotation angle of the driving motor, or a limiting component is provided near the rotation point of the driving motor to limit its rotation. However, since the flap is driven by a multi-link mechanism, it is easy to shake after opening after long-term use, and the limiting effect of the limiting structure is average. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention proposes an opening and closing structure that can solve the problem of a general limiting effect.

[0004] According to an opening and closing structure of the first aspect of the present utility model, the embodiment includes: a driving device, a limiting mechanism, a connecting rod mechanism and a baffle, the limiting mechanism includes a support, the support is provided with a limiting structure, the connecting rod mechanism includes a transmission rod assembly and a first rocker arm, the transmission rod assembly is transmission-connected to the driving device, the first rocker arm is hinged to the support and to the transmission rod assembly, the driving device can drive the first rocker arm to rotate around the support through the transmission rod assembly, the baffle is provided on the first rocker arm, the baffle has an open position and a closed position, the driving device can drive the baffle to flip over to the open position through the connecting rod mechanism, and can drive the baffle to flip down to the closed position, wherein the limiting structure is arranged near the rotation center of the first rocker arm, and when the baffle is in the open position, the first rocker arm can abut against the limiting structure for positioning.

[0005] According to an opening and closing structure of an embodiment of the present utility model, there are at least the following beneficial effects: the baffle is transmitted through a connecting rod mechanism to expand the opening and closing range, the first rocker arm is directly connected to the baffle, the first rocker arm is hinged to the support, the first rocker arm rotates around the support, and the baffle is opened and closed by arranging a limiting structure on the support, the limiting structure cooperates with the first rocker arm to limit, that is, the limiting structure is limited to the first rocker arm directly connected to the baffle, which can improve the limiting effect, and the limiting structure is arranged close to the rotation center of the first rocker arm. Even if the baffle is subjected to lateral force to cause the first rocker arm to swing away from the rotation point, it will not affect the limiting cooperation of the limiting structure, and it is not easy to get out of the limit, which can improve the reliability of use.

[0006] According to some embodiments of the present invention, the limiting structure includes a side portion and a transverse portion, the side portion is connected to the support, the transverse portion is arranged on the side portion, the transverse portion can abut against the first rocker arm to limit the rotation of the first rocker arm, and the side portion can abut against the side portion of the first rocker arm to limit the lateral swing of the first rocker arm.

[0007] According to some embodiments of the present invention, the transverse portion and the side portion are an integrated structure.

[0008] According to some embodiments of the present invention, the first rocker arm is provided with a raised matching portion, and the matching portion can abut against the transverse portion.

[0009] According to some embodiments of the present invention, the transmission rod assembly includes an active rod and a driven rod, one end of the active rod is transmission-connected to the driving device, the driving device can drive the active rod to move along its axial direction, one end of the driven rod is hinged to the other end of the active rod, and the other end of the driven rod is pivotally connected to the first rocker rod.

[0010] According to some embodiments of the present invention, the first rocker arm includes a first rod segment and a second rod segment, and a first rotating portion is provided between the first rod segment and the second rod segment, the first rotating portion is hinged to the driven rod, the first rod segment is hinged to the support at one end away from the first rotating portion, and an avoidance portion is defined between the second rod segment and the first rod segment.

[0011] According to some embodiments of the present invention, the second rod segment is arc-shaped.

[0012] According to some embodiments of the present invention, the connecting rod mechanism further includes a second rocker arm, one end of which is hinged to the range hood, and the other end of which is connected to the baffle.

[0013] According to some embodiments of the present invention, there are two limiting mechanisms, one limiting mechanism is used to cooperate with the first rocker arm for limiting position, and the other limiting mechanism is used to cooperate with the second rocker arm for limiting position.

[0014] The range hood according to the second embodiment of the present invention includes a range hood adopting the above-mentioned opening and closing structure.

[0015] The range hood according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned opening and closing structure, the baffle will not shake during the use of the range hood, and the baffle can also work normally under long-term use, with high reliability.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of some embodiments of the present utility model;

[0019] Figure 2 It is a structural diagram of part of the connecting rod mechanism and the limiting mechanism;

[0020] Figure 3 Schematic diagram of a range hood with a partially hidden housing in some embodiments;

[0021] Figure 4 This is a structural diagram of a range hood.

[0022] Reference numerals:

[0023] Driving device 100;

[0024] Limiting mechanism 200, support 210, limiting structure 220, side portion 221, transverse portion 222;

[0025] Transmission rod assembly 310, active rod 311, driven rod 312, first swing rod 320, matching portion 321, first rod segment 322, second rod segment 323, first rotating portion 324, second swing rod 330;

[0026] Baffle 400. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] 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", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] Reference Figures 1 to 4According to an embodiment of the first aspect of the present invention, an opening and closing structure includes a driving device 100, a limiting mechanism 200, a connecting rod mechanism and a baffle 400. The limiting mechanism 200 includes a support 210, and the support 210 is provided with a limiting structure 220. The connecting rod mechanism includes a transmission rod assembly 310 and a first rocker 320. The transmission rod assembly 310 is connected to the driving device 100 in a transmission manner. The first rocker 320 is hinged to the support 210 and the transmission rod assembly 310. The driving device 100 can be opened and closed through the transmission rod assembly 310 drives the first rocker arm 320 to rotate around the support 210, and the baffle 400 is arranged on the first rocker arm 320. The baffle 400 has an open position and a closed position. The driving device 100 can drive the baffle 400 to flip up to the open position through the connecting rod mechanism, and can drive the baffle 400 to flip down to the closed position, wherein the limiting structure 220 is arranged near the rotation center of the first rocker arm 320. When the baffle 400 is in the open position, the first rocker arm 320 can abut against the limiting structure 220 for positioning. The baffle 400 is driven by a connecting rod mechanism, which can expand the opening and closing range. The first rocker arm 320 is directly connected to the baffle 400, and the first rocker arm 320 is hinged to the support 210. The first rocker arm 320 rotates around the support 210 to open and close the baffle 400. By setting a limiting structure 220 on the support 210, the limiting structure 220 cooperates with the first rocker arm 320 to limit, that is, the limiting structure 220 is limited to the first rocker arm 320 directly connected to the baffle 400, which can improve the limiting effect, and the limiting structure 220 is set close to the rotation center of the first rocker arm 320. Even if the baffle 400 is subjected to lateral force to cause the first rocker arm 320 to swing away from the rotation point, it will not affect the limiting cooperation of the limiting structure 220, and it is not easy to get out of the limit, which can improve the reliability of use.

[0031] Specifically, the specific structure of the driving device 100 is not limited here. The transmission rod assembly 310 can be set to a multi-link structure. The first swing rod 320 is connected to the baffle 400. The first swing rod 320 drives the baffle 400 to flip up and down through the transmission rod assembly 310. The limiting mechanism 200 can be set on the housing of the range hood, the support 210 can be fixedly connected to the range hood, and the first swing rod 320 can be hinged to the support 210 so that the first swing rod 320 rotates around the support 210. It can be understood that the output end of the transmission rod assembly 310 is connected to the first swing rod 320. It is hinged, and the hinge point is located on one side of the rotation point. The limiting structure 220 is arranged near the rotation point of the first rocker arm 320. The first rocker arm 320 is connected to the baffle 400. The limiting structure 220 acts on the first rocker arm 320, which can improve the stability of the baffle 400 after limiting. If it is limited at the driving device 100, the connecting rod mechanism and the first rocker arm 320 will still shake, causing the baffle 400 to shake, and even if the baffle 400 becomes loose after long-term use, the first rocker arm 320 near the rotation point can cooperate with the limiting structure 220 and is not easy to loosen.

[0032] Reference Figures 1 to 2 In some embodiments of the present invention, the limiting structure 220 includes a side portion 221 and a transverse portion 222. The side portion 221 is connected to the support 210, and the transverse portion 222 is provided on the side portion 221. The transverse portion 222 can abut against the first swing link 320 to limit the rotation of the first swing link 320, and the side portion 221 can abut against the side portion 221 of the first swing link 320 to limit the lateral swing of the first swing link 320. This can further improve the stability of the opening and closing structure.

[0033] Specifically, the side portion 221 can be arranged parallel to the side of the first rocker arm 320, and the transverse portion 222 can be arranged at the outer end of the side portion 221. The transverse portion 222 extends laterally so that it can abut against the transverse portion 222 on the side of the first rocker arm 320 toward the rotation direction. The transverse portion 222 can limit the rotation, and the side portion 221 can support the side portion 221 of the first rocker arm 320, which can further improve the stability of the opening and closing structure.

[0034] In some embodiments of the present invention, the transverse portion 222 and the side portion 221 are an integrated structure. Specifically, the transverse portion 222 and the side portion 221 can be formed by bending sheet metal parts, which is simple in process and low in manufacturing cost.

[0035] It is understandable that the support 210 , the side portion 221 and the transverse portion 222 can all be integrally stamped from a plate.

[0036] Reference Figure 2In some embodiments of the present invention, the first swing arm 320 is provided with a raised mating portion 321, which is capable of abutting against the transverse portion 222. Specifically, the mating portion 321 can be provided along the first swing arm 320 in the direction of rotation. The mating portion 321 improves local strength, reduces impact loss due to position limiting, and prolongs service life.

[0037] Reference Figure 1 In some embodiments of the present invention, the transmission rod assembly 310 includes an active rod 311 and a driven rod 312. One end of the active rod 311 is in transmission connection with the driving device 100, and the driving device 100 can drive the active rod 311 to move along its axial direction. One end of the driven rod 312 is hinged to the other end of the active rod 311, and the other end of the driven rod 312 is pivotally connected to the first swing link 320. This can both meet the driving force requirements and expand the rotation range of the first swing link 320.

[0038] Specifically, the driving device 100 can be an electric telescopic cylinder, which can increase the driving force and facilitate the opening and closing of the baffle 400. One end of the active rod 311 is connected to it, so that the driving device 100 can drive the active rod 311 to telescopic movement, and the end of the active rod 311 away from the driving device 100 can be hinged to one end of the driven rod 312, and the other end of the driven rod 312 can be hinged to one side of the rotation point of the first rocker arm 320. Through the cooperation of the active rod 311 and the driven rod 312, the rotation range of the first rocker arm 320 can be expanded while meeting the driving force.

[0039] It is understandable that the driving device 100 can also be a screw drive shaft.

[0040] Reference Figure 2 In some embodiments of the present invention, the first swing arm 320 includes a first segment 322 and a second segment 323, with a first rotating portion 324 disposed between the first segment 322 and the second segment 323. The first rotating portion 324 is hingedly connected to the driven rod 312. An end of the first segment 322 away from the first rotating portion 324 is hingedly connected to the support 210. A relief portion is defined between the second segment 323 and the first segment 322. The relief portion can avoid the range hood panel to meet normal usage requirements.

[0041] Specifically, the first rotating part 324 can be offset on the first rocker arm 320, so that the first rod segment 322 can be set shorter and the second rod segment 323 can be set longer, thereby expanding the opening and closing range of the baffle 400, and the first rod segment 322 can also increase the lever arm and enhance the driving force. The first rod segment 322 and the second rod segment 323 can form a U-shaped rod, and the U-shaped opening of the avoidance part. When the first rocker arm 320 rotates, the avoidance part can avoid the panel of the range hood to meet normal usage requirements.

[0042] Reference Figures 2 to 4 In some embodiments of the present invention, the second rod segment 323 is arc-shaped. The arc is arranged along the rotation direction, so that when the first swing arm 320 rotates, the interference area with the range hood panel is reduced, thereby reducing the area for setting the avoidance hole.

[0043] Reference Figure 1 and Figure 4 In some embodiments of the present invention, the linkage mechanism further includes a second swing arm 330, one end of which is hinged to the range hood and the other end is connected to the baffle 400. Specifically, the second swing arm 330 and the first swing arm 320 can move synchronously and can be respectively located on either side of the baffle 400 to stabilize the opening and closing movement of the baffle 400.

[0044] Reference Figure 1 In some embodiments of the present invention, two limiting mechanisms 200 are provided: one limiting mechanism 200 is used to cooperate with the first swing link 320 for limiting position, and the other limiting mechanism 200 is used to cooperate with the second swing link 330 for limiting position. Similarly, a limiting mechanism 200 can be provided on the second swing link 330 to also limit the second swing link 330, further improving the limiting effect of the baffle 400.

[0045] Reference Figure 4 According to a second embodiment of the present invention, a range hood includes a range hood employing the aforementioned opening and closing structure. By employing the aforementioned opening and closing structure, the baffle of the range hood does not wobble during use and can function normally even after long-term use, thereby achieving high reliability.

[0046] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An opening and closing structure, characterized in that: include: A driving device (100); The limiting mechanism (200) comprises a support (210), wherein the support (210) is provided with a limiting structure (220); A connecting rod mechanism, comprising a transmission rod assembly (310) and a first rocker (320), wherein the transmission rod assembly (310) is transmission-connected to the driving device (100), the first rocker (320) is hinged to the support (210) and is also hinged to the transmission rod assembly (310), and the driving device (100) can drive the first rocker (320) to rotate around the support (210) through the transmission rod assembly (310); A baffle (400) is provided on the first swing rod (320), the baffle (400) having an open position and a closed position, and the driving device (100) can drive the baffle (400) to flip upward to the open position and can drive the baffle (400) to flip downward to the closed position through the connecting rod mechanism; The limiting structure (220) is arranged close to the rotation center of the first rocker (320), and when the baffle (400) is in the open position, the first rocker (320) can abut against the limiting structure (220) for positioning.

2. The opening and closing structure according to claim 1, characterized in that: The limiting structure (220) includes a side portion (221) and a transverse portion (222), wherein the side portion (221) is connected to the support (210), and the transverse portion (222) is provided on the side portion (221), and the transverse portion (222) can abut against the first rocker (320) to limit the rotation of the first rocker (320), and the side portion (221) can abut against the side portion (221) of the first rocker (320) to limit the lateral swing of the first rocker (320).

3. The opening and closing structure according to claim 2, characterized in that: The transverse portion (222) and the side portion (221) are an integrated structure.

4. The opening and closing structure according to claim 2, characterized in that: The first rocker (320) is provided with a protruding matching portion (321), and the matching portion (321) is capable of abutting against the transverse portion (222).

5. The opening and closing structure according to claim 1, characterized in that: The transmission rod assembly (310) includes an active rod (311) and a driven rod (312), one end of the active rod (311) is transmission-connected to the driving device (100), and the driving device (100) is capable of driving the active rod (311) to move along its axial direction, one end of the driven rod (312) is hinged to the other end of the active rod (311), and the other end of the driven rod (312) is pivotally connected to the first rocker (320).

6. The opening and closing structure according to claim 5, characterized in that: The first swing rod (320) includes a first rod segment (322) and a second rod segment (323), and a first rotating portion (324) is provided between the first rod segment (322) and the second rod segment (323). The first rotating portion (324) is hinged to the driven rod (312). An end of the first rod segment (322) away from the first rotating portion (324) is hinged to the support (210), and an avoidance portion is defined between the second rod segment (323) and the first rod segment (322).

7. The opening and closing structure according to claim 6, characterized in that: The second rod section (323) is in an arc shape.

8. The opening and closing structure according to claim 1, characterized in that: The connecting rod mechanism further comprises a second swing rod (330), one end of the second swing rod (330) being hinged to the range hood, and the other end being connected to the baffle (400).

9. The opening and closing structure according to claim 8, characterized in that: The limiting mechanisms (200) are provided in two forms, one limiting mechanism (200) is used for cooperating with the first rocker (320) for limiting position, and the other limiting mechanism (200) is used for cooperating with the second rocker (330) for limiting position.

10. A range hood, characterized in that: An opening and closing structure comprising any one of claims 1 to 9.

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