Range hood with damping anti-shake swing arm structure

Abstract

The utility model discloses a range hood with a damping anti-shake swing arm structure. A first swing arm and a second support are respectively connected with a case and a movable panel; the first swing arm is provided with a circular hole and can rotate and move relative to the connecting rod part; the second support is provided with a long rectangular round hole which can be attached to the outer contour of the rectangular center part of the connecting rod part. A damping gasket is arranged between the first swing arm and the second support. The wave-shaped gasket is in an annular wave shape. The first swing arm can rotate and move, the second support and the fastening bolt are fixed and limited, the damping gasket is arranged between the first swing arm and the second support, damping force of rotation of the first swing arm can be increased, extrusion force between the second swing arm and the first swing arm is further increased through the wave-shaped gasket, friction force is further increased, and vibration is reduced. Therefore, large damping friction force exists between the first swing arm and the second support, and the shaking phenomenon of the movable panel can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a range hood with a damping and anti-shake swing arm structure. Background Art

[0002] Range hoods are now a common household appliance that people see in their kitchens. Range hoods are mainly used to remove oil fumes from the kitchen, thereby keeping the kitchen clean and the users comfortable. Currently, the vast majority of range hoods on the market are side-suction range hoods. In order to ensure the aesthetics of the range hood when it is not in operation, some range hoods currently have decorative panels installed in the oil fume suction area. When the range hood needs to be used, the panel can be flipped up. For example, patent number CN201920146587.5 discloses a range hood flip mechanism. Usually, the movable operation of the panel is achieved by a combination of an active drive connecting rod structure and a driven swing arm structure. Since there are dead points between the multiple connecting rods of the active drive connecting rod structure, the active drive connecting rod structure will generate jitter when driving the panel to move through the dead point area, and the panel flipping movement is not coherent and stable, so further improvement is needed. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a range hood with a damping anti-shake swing arm structure.

[0004] An embodiment of the present invention solves the technical problem by adopting a technical solution: a range hood with a damping anti-shake swing arm structure, comprising a chassis, a movable panel, and an active driving connecting rod structure and a driven swing arm structure arranged between the chassis and the movable panel;

[0005] The driven swing arm structure includes a fastening bolt, a fastening nut, and a first swing arm, a second bracket, a damping washer, and a corrugated washer disposed between the fastening bolt and the fastening nut; the fastening bolt includes a connecting rod portion and a threaded rod portion, the threaded rod portion being threadedly connected to the fastening nut; the cross-section of the connecting rod portion includes a rectangular central portion and arcuate portions disposed on either side of the rectangular central portion, the two arcuate portions forming a circular profile;

[0006] The first swing arm and the second bracket are respectively connected to the chassis and the movable panel; the first swing arm is provided with a circular hole and can rotate relative to the connecting rod; the second bracket is provided with a long rectangular circular hole that can fit the outer contour of the rectangular center part of the connecting rod; the damping gasket is provided between the first swing arm and the second bracket; the corrugated gasket is annular and wavy.

[0007] Optionally, the damping gasket is provided on the side away from the first swing arm and the second bracket.

[0008] Optionally, two conical washers are further arranged between the fastening nut and the fastening bolt; the first swing arm, the second bracket, the damping gasket and the corrugated gasket are arranged between the two conical washers.

[0009] Optionally, the fastening nut is a lock nut.

[0010] Optionally, the fastening bolt is a T-bolt.

[0011] Optionally, the locking torque of the fastening nut is greater than the gravity of the movable panel.

[0012] Optionally, the locking torque of the fastening nut is in the range of 1.1 times to 1.2 times the gravity of the movable panel.

[0013] The beneficial effects of the present invention are as follows: the cross-section of the connecting rod portion of the fastening bolt includes a rectangular central portion and arc-shaped portions arranged on both sides of the rectangular central portion, and the two arc-shaped portions can form a circular contour; the second bracket is a long rectangular circular hole matching the connecting rod portion, and the second bracket and the connecting rod portion do not rotate, and can be installed in accordance with the chassis limit; and the first swing arm is a circular hole, which can rotate relative to the fastening bolt, thereby realizing driven support for the movement of the movable panel; in the present invention, the first swing arm can rotate, but the second bracket and the fastening bolt are fixed and limited, and a damping gasket is provided between the first swing arm and the second bracket, which can increase the damping force of the rotation of the first swing arm, and further increase the extrusion force between the second swing arm and the first swing arm through the corrugated gasket, thereby increasing the friction force, so that there is a larger damping friction force between the first swing arm and the second bracket, which can effectively prevent the shaking of the movable panel.

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of the range hood of the utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of the driven swing arm structure;

[0018] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the driven swing arm.

[0019] Description of main component symbols:

[0020] 10. Chassis; 20. Movable panel; 30. Active drive connecting rod structure; 40. Driven swing arm structure; 41. Fastening bolt; 411. Connecting rod; 412. Threaded rod; 42. Fastening nut; 43. First swing arm; 431. Circular hole; 44. Second bracket; 441. Long rectangular circular hole; 45. Damping gasket; 46. Corrugated gasket; 47. Conical washer. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] In the description of this utility model, "above," "below," and "within" are understood to be exclusive of the number indicated, while "above," "below," and "within" are understood to be inclusive of the number indicated. The use of "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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.

[0024] In this utility model, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection; internal communication between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution.

[0025] Example

[0026] Reference Figures 1 to 3 The utility model proposes a range hood with a damping anti-shake swing arm structure, comprising a chassis 10, a movable panel 20, and an active driving connecting rod structure 30 and a driven swing arm structure 40 arranged between the chassis 10 and the movable panel 20;

[0027] The driven swing arm structure 40 includes a fastening bolt 41, a fastening nut 42, a first swing arm 43, a second bracket 44, a damping washer 45, and a corrugated washer 46 disposed between the fastening bolt 41 and the fastening nut 42. The fastening bolt 41 includes a connecting rod portion 411 and a threaded rod portion 412, which is threadedly connected to the fastening nut 42. The cross-section of the connecting rod portion 411 includes a rectangular central portion and arcuate portions disposed on either side of the rectangular central portion, and the two arcuate portions can form a circular profile.

[0028] The first swing arm 43 and the second bracket 44 are connected to the chassis 10 and the movable panel 20 respectively; the first swing arm 43 is provided with a circular hole 431, which can rotate relative to the connecting rod part 411; the second bracket 44 is provided with a long rectangular circular hole 441, which can fit the outer contour of the rectangular center part of the connecting rod part 411; a damping gasket 45 is provided between the first swing arm 43 and the second bracket 44; the corrugated gasket 46 is annular and wavy.

[0029] In the present invention, the cross section of the connecting rod portion 411 of the fastening bolt 41 includes a rectangular central portion and arc-shaped portions arranged on both sides of the rectangular central portion, and the two arc-shaped portions can form a circular profile; wherein the second bracket 44 is a long rectangular circular hole 441 that matches the connecting rod portion 411, and the second bracket 44 and the connecting rod portion 411 do not rotate and can be installed by matching the position limit of the chassis 10; and the first swing arm 43 is a circular hole 431, which can rotate relative to the fastening bolt 41, thereby realizing the movement of the movable panel 20 from Dynamic support; In the present invention, the first swing arm 43 can rotate and move, but the second bracket 44 is fixed and limited by the fastening bolt 41, and a damping gasket 45 is provided between the first swing arm 43 and the second bracket 44, which can increase the damping force of the rotation of the first swing arm 43, and further increase the squeezing force between the second swing arm and the first swing arm 43 through the corrugated gasket 46, thereby increasing the friction force, so that there is a larger damping friction force between the first swing arm 43 and the second bracket 44, which can effectively prevent the shaking of the movable panel 20.

[0030] Furthermore, in order to make the first swing arm 43 and the second bracket 44 more evenly connected to the damping elements, damping washers 45 are provided on the opposite sides of the first swing arm 43 and the second bracket 44 .

[0031] In this embodiment, in order to further increase the extrusion torque between the fastening nut 42 and the fastening bolt 41, two conical washers 47 are further arranged between the fastening nut 42 and the fastening bolt 41; the first swing arm 43, the second bracket 44, the damping gasket 45 and the corrugated gasket 46 are arranged between the two conical washers 47.

[0032] In this embodiment, the fastening nut 42 is a locking nut to ensure the anti-loosening and self-locking performance of the fastening nut 42 .

[0033] In this embodiment, in order to facilitate the positioning of the fastening nut 42 , the fastening bolt 41 is a T-shaped bolt.

[0034] In this embodiment, after testing, in order for the driven swing arm structure 40 to overcome the shaking of the movable panel 20 , the locking torque of the fastening nut 42 is greater than the gravity of the movable panel 20 .

[0035] Preferably, the tightening torque of the fastening nut 42 is in the range of 1.1 times to 1.2 times the gravity of the movable panel 20 .

[0036] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A range hood with a damping anti-shake swing arm structure, comprising a chassis (10), a movable panel (20), and an active drive connecting rod structure (30) and a driven swing arm structure (40) disposed between the chassis (10) and the movable panel (20); characterized in that: The driven swing arm structure (40) includes a fastening bolt (41), a fastening nut (42), and a first swing arm (43), a second bracket (44), a damping washer (45), and a corrugated washer (46) arranged between the fastening bolt (41) and the fastening nut (42); the fastening bolt (41) includes a connecting rod portion (411) and a threaded rod portion (412), and the threaded rod portion (412) is threadedly connected to the fastening nut (42); the cross section of the connecting rod portion (411) includes a rectangular central portion and arc-shaped portions arranged on both sides of the rectangular central portion, and the two arc-shaped portions can form a circular profile; The first swing arm (43) and the second bracket (44) are connected to the chassis (10) and the movable panel (20) respectively; the first swing arm (43) is provided with a circular hole (431) and can rotate relative to the connecting rod (411); the second bracket (44) is provided with a long rectangular circular hole (441) and can fit the outer contour of the rectangular center of the connecting rod (411); the damping gasket (45) is provided between the first swing arm (43) and the second bracket (44); the corrugated gasket (46) is annular and wavy.

2. The range hood with a damping and anti-shake swing arm structure according to claim 1, characterized in that: The damping pad (45) is provided on the opposite side of the first swing arm (43) and the second bracket (44).

3. The range hood with a damping and anti-shake swing arm structure according to claim 1, characterized in that: Two conical washers (47) are further arranged between the fastening nut (42) and the fastening bolt (41); the first swing arm (43), the second bracket (44), the damping washer (45) and the corrugated washer (46) are arranged between the two conical washers (47).

4. The range hood with a damping and anti-shake swing arm structure according to claim 1, characterized in that: The fastening nut (42) is a locking nut.

5. The range hood with a damping and anti-shake swing arm structure according to claim 1, characterized in that: The fastening bolt (41) is a T-shaped bolt.

6. The range hood with a damping and anti-shake swing arm structure according to claim 1, characterized in that: The locking torque of the fastening nut (42) is greater than the gravity of the movable panel (20).

7. The range hood with a damping and anti-shake swing arm structure according to claim 1, characterized in that: The locking torque of the fastening nut (42) is in the range of 1.1 to 1.2 times the gravity of the movable panel (20).

Images