Air deflector opening and closing structure of range hood

Abstract

Two sets of opening and closing structures are symmetrically installed on the left side and the right side of a smoke suction port of the range hood, each opening and closing structure comprises a base fixed to a range hood body and a movable plate fixed to the air deflector, a first hinge hole is formed in each base and connected with a first hinge arm, and a second hinge hole is formed in each movable plate and connected with a second hinge arm. The base is provided with a second hinge hole hinged to the second hinge arm, the first hinge arm is further hinged to a third hinge arm, the middle of the third hinge arm is hinged to the middle of the second hinge arm, the top of the third hinge arm is hinged to the movable plate, and the top of the second hinge arm is hinged to the movable plate through a fourth hinge arm. The air deflector opening and closing structure has the advantages that the air deflector opening and closing structure achieves non-fixed-point circle center movement of the air deflector through the ingenious design of the four-connecting-rod mechanism. Different from a traditional design of rotating around a fixed-point circle center, the non-fixed-point circle center movement enables the air guide plate to be more stable and smoother in the opening and closing process.

Description

Technical Field

[0001] The utility model relates to a range hood accessory, in particular to an opening and closing structure of an air guide plate of a range hood. Background Art

[0002] Range hoods are an indispensable and important device in modern kitchens. Their main function is to remove the fumes generated during cooking and keep the kitchen air fresh. In the design of range hoods, the opening and closing structure of the air guide plate, also known as the smoke guide plate, plays a vital role in improving the smoke absorption rate and the convenience of the equipment. However, the existing opening and closing structure of the air guide plate of the range hood has the following significant shortcomings and deficiencies in actual use.

[0003] First, the existing range hood air guide plate opening and closing structure requires power mechanisms to be configured on the left and right sides of the range hood intake port, that is, each opening and closing structure needs to be configured with a separate power system. This not only increases the manufacturing cost, but also increases the complexity of assembly. In addition, the use of multiple power systems will also increase the failure rate and maintenance cost of the equipment.

[0004] Secondly, the top of the air deflector in the prior art is usually connected to the range hood main unit through a hinge or articulation, and the air deflector rotates around the center of the hinge or hinge point. In actual use, this design will cause the hinge point of the air deflector to be easily contaminated by oil, resulting in jamming, affecting the normal opening and closing function of the air deflector. The accumulation of oil may also cause wear and damage to the hinge point, thereby shortening the service life of the equipment, so it is necessary to make further improvements. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a range hood air guide plate opening and closing structure which is simple in structure and easy to use, optimizes the design of the four-bar linkage mechanism, makes the opening and closing operation of the air guide plate smoother, and only requires a power mechanism to be configured on one side to realize the opening and closing of the air guide plate.

[0006] The purpose of the utility model is achieved by the following method: an opening and closing structure of an air guide plate of a range hood, wherein the opening and closing structure is provided with two sets, which are symmetrically installed on the left and right sides of the range hood suction port, and the opening and closing structure includes a base fixed on the range hood body, and a movable plate fixed on the air guide plate, wherein the base is provided with a first hinge hole connected to a first hinge arm, and the base is provided with a second hinge hole hinged to a second hinge arm, and the first hinge arm is further hinged to a third hinge arm, the middle part of the third hinge arm is hinged to the middle part of the second hinge arm, the top of the third hinge arm is hinged to the movable plate, and the top of the second hinge arm is hinged to the movable plate through a fourth hinge arm;

[0007] A four-bar structure is formed between the first hinge arm, the second hinge arm, the third hinge arm and the base, and a four-bar structure is formed between the second hinge arm, the third hinge arm, the fourth hinge arm and the movable plate. The power mechanism is connected to the first hinge arm, and the swing of the first hinge arm drives the movable plate to move, thereby realizing the opening and closing of the air guide plate.

[0008] Furthermore: in the opening and closing structure, the power mechanism only needs to be arranged on one set of the opening and closing structure.

[0009] Furthermore: the power mechanism is a reduction motor, the reduction motor is fixed on the base, and the driving shaft of the reduction motor passes through the first hinge hole and is connected to the first hinge arm.

[0010] Furthermore: the base includes a mounting plate and a connecting plate perpendicular to the body thereof, the first hinge hole and the second hinge hole are arranged on the connecting plate, and a mounting hole is arranged on the base to be fixedly mounted with the range hood body.

[0011] Furthermore: an auxiliary plate is arranged at the rear of the connecting plate perpendicular to the main body thereof, and a mounting hole is arranged on the auxiliary plate for fixing the auxiliary plate to the range hood main body.

[0012] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0013] 2. The opening and closing structure of the air deflector in the utility model realizes the non-fixed-point circular motion of the air deflector through the ingenious design of the four-bar linkage. Different from the traditional design of rotating around a fixed point, the non-fixed-point circular motion makes the air deflector smoother during the opening and closing process, avoiding the problem of sticking caused by oil stains, thereby improving the service life and reliability of the equipment. Since the air deflector no longer relies on a single hinge point, the risk of wear and failure caused by oil accumulation is reduced.

[0014] 3. The air guide plate opening and closing structure of the utility model innovatively adopts a single-sided drive design, and the power mechanism is only configured on one side of the range hood intake port. This design greatly simplifies the overall structure and reduces manufacturing and assembly costs. At the same time, the single-sided drive design reduces the complexity of the system, reduces the failure rate and maintenance costs, and improves the reliability of the equipment. By optimizing the motion trajectory of the four-bar linkage, the single-sided drive can effectively drive the air guide plates on both sides to open and close synchronously, achieving high efficiency and consistency of the structure.

[0015] 4. The air deflector opening and closing structure of the utility model connects the base, the movable plate and the hinge arm together through a four-bar linkage mechanism to form two four-bar structures. This structure is not only simple and efficient, but also can effectively transmit power, making the opening and closing operation of the air deflector more stable and accurate. Compared with the traditional structure, the utility model greatly reduces the number of components and connection points in structural design, thereby reducing production costs and assembly difficulty.

[0016] 5. Since the utility model avoids the problems of stagnation and wear caused by oil accumulation at the hinge points in the traditional design, the service life of the air guide plate opening and closing structure is greatly improved. At the same time, the single-side drive design makes maintenance more convenient and reduces the maintenance complexity caused by multi-point drive, thereby improving the user experience and satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a rendering of the utility model showing the wind guide plate in a closed state.

[0018] Figure 2 This is a rendering of the utility model showing the wind guide plate in the open state.

[0019] Figure 3 This is the effect diagram of the range hood in the utility model with the air guide plate hidden.

[0020] Figure 4 This is a rendering of the opening and closing structure of the utility model in an open state.

[0021] Figure 5 This is a rendering of the opening and closing structure of the utility model in a closed state.

[0022] Figure 6 , 7 This is an exploded view of the opening and closing structure of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below with reference to the accompanying drawings. A range hood air guide plate opening and closing structure, wherein the opening and closing structure is provided with two sets, symmetrically installed on the left and right sides of the range hood suction port, and the opening and closing structure comprises a base 2 fixed on the range hood body 1, and a movable plate 4 fixed on the air guide plate 3, wherein the base 2 is provided with a first hinge hole 21 connected to a first hinge arm 5, and the base 2 is provided with a second hinge hole 22 hinged to a second hinge arm 6, and the first hinge arm 5 is further hinged to a third hinge arm 7, the middle part of the third hinge arm 7 is hinged to the middle part of the second hinge arm 6, the top of the third hinge arm 7 is hinged to the movable plate 4, and the top of the second hinge arm 6 is hinged to the movable plate 4 through a fourth hinge arm 8;

[0024] A four-bar structure is formed between the first hinge arm 5, the second hinge arm 6, the third hinge arm 7 and the base 2, and a four-bar structure is formed between the second hinge arm 6, the third hinge arm 7, the fourth hinge arm 8 and the movable plate 4. The power mechanism is connected to the first hinge arm 5, and the swing of the first hinge arm 5 drives the movable plate 4 to move, thereby realizing the opening and closing of the air guide plate 3.

[0025] In one of the embodiments: in the opening and closing structure, the power mechanism only needs to be arranged on one set of the opening and closing structure.

[0026] In one embodiment, the power mechanism is a reduction motor 9 , which is fixed on the base 2 , and a driving shaft 91 of the reduction motor 9 passes through the first hinge hole 21 and is connected to the first hinge arm 5 .

[0027] In one embodiment, the base 2 includes a mounting plate 23 and a connecting plate 24 perpendicular to the main body thereof, the first hinge hole 21 and the second hinge hole 22 are arranged on the connecting plate 24, and a mounting hole 25 is arranged on the base 2 for fixing the base 2 with the range hood main body.

[0028] In one embodiment, an auxiliary plate 26 is disposed at the rear of the connecting plate 24 perpendicular to the main body thereof, and a mounting hole 25 is disposed on the auxiliary plate 26 for fixing the auxiliary plate 26 to the range hood main body.

[0029] Working principle: The range hood air guide plate opening and closing structure is provided with two sets, which are symmetrically installed on the left and right sides of the range hood intake port. Each set of opening and closing structure includes a base fixed on the range hood body and a movable plate fixed on the air guide plate. The base is provided with a first hinge hole and a second hinge hole, which are connected to the movable plate through a series of hinge arms to form two four-link structures.

[0030] The base 2 is provided with a first hinge hole 21 and a second hinge hole 22 which are connected to the first hinge arm 5 and the second hinge arm 6 respectively.

[0031] The first hinge arm 5 is further hinged with a third hinge arm 7 , the middle portion of the third hinge arm 7 is hinged with the middle portion of the second hinge arm 6 , and the top portion of the third hinge arm 7 is hinged with the movable plate 4 .

[0032] The top of the second hinge arm 6 is hinged to the movable plate 4 through the fourth hinge arm 8 .

[0033] The power mechanism, such as a reduction motor, is fixed on the base 2, and the drive shaft 91 passes through the first hinge hole 21 and is connected to the first hinge arm 5. When the power mechanism is started, the drive shaft rotates, driving the first hinge arm 5 to swing. When the power mechanism is started, the first hinge arm 5 is driven to swing through the drive shaft 91, and the swing of the first hinge arm 5 drives the third hinge arm 7 and the second hinge arm 6 to move in coordination. Since the middle of the third hinge arm 7 is hinged to the middle of the second hinge arm 6, the top of the third hinge arm 7 is hinged to the movable plate 4, and the top of the second hinge arm 6 is hinged to the movable plate 4 through the fourth hinge arm 8, two four-bar structures are formed.

[0034] The motion trajectory of the four-link structure enables the movable plate 4 to smoothly drive the air guide plate 3 to perform opening and closing motion at a non-fixed center.

[0035] In summary, compared with the traditional technology, the innovation of the utility model lies in that the power mechanism is only configured on one side, and through the ingenious design of the double four-bar linkage, the synchronous opening and closing of the air guide plate on both sides is realized under the power conduction of the air guide plate itself. This design not only simplifies the overall structure and reduces costs, but also reduces the risk of failure caused by multiple power mechanisms. In addition, the opening and closing structure of the air guide plate of the range hood of the utility model realizes the non-fixed-point circular motion of the air guide plate through the ingenious design of the four-bar linkage mechanism, and the power mechanism only needs to be configured on one side, which simplifies the structural design, reduces costs, and improves the reliability and service life of the equipment.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A range hood air guide plate opening and closing structure, characterized in that: The opening and closing structure is provided in two sets and is symmetrically installed on the left and right sides of the range hood exhaust port. The opening and closing structure comprises a base (2) fixed on the range hood body (1) and a movable plate (4) fixed on the air guide plate (3). The base (2) is provided with a first hinge hole (21) connected to the first hinge arm (5). The base (2) is provided with a second hinge hole (22) hinged to the second hinge arm (6). The first hinge arm (5) is also hinged to a third hinge arm (7). The middle part of the third hinge arm (7) is hinged to the middle part of the second hinge arm (6). The top of the third hinge arm (7) is hinged to the movable plate (4). The top of the second hinge arm (6) is hinged to the movable plate (4) via a fourth hinge arm (8). A four-bar structure is formed between the first hinge arm (5), the second hinge arm (6), the third hinge arm (7) and the base (2); a four-bar structure is formed between the second hinge arm (6), the third hinge arm (7), the fourth hinge arm (8) and the movable plate (4); a power mechanism is connected to the first hinge arm (5); the first hinge arm (5) swings to drive the movable plate (4) to move, thereby realizing the opening and closing of the air guide plate (3).

2. The range hood air guide plate opening and closing structure according to claim 1, characterized in that: In the opening and closing structure, the power mechanism only needs to be arranged on one set of the opening and closing structure.

3. The range hood air guide plate opening and closing structure according to claim 1, characterized in that: The power mechanism is a reduction motor (9), which is fixed on the base (2), and a drive shaft (91) of the reduction motor (9) passes through the first hinge hole (21) and is connected to the first hinge arm (5).

4. The range hood air guide plate opening and closing structure according to claim 1, characterized in that: The base (2) comprises a mounting plate (23) and a connecting plate (24) perpendicular to the main body thereof; the first hinge hole (21) and the second hinge hole (22) are arranged on the connecting plate (24); and the base (2) is provided with a mounting hole (25) for fixing the base (2) to the range hood main body.

5. The range hood air guide plate opening and closing structure according to claim 4, characterized in that: An auxiliary plate (26) is also provided at the rear of the connecting plate (24) perpendicular to the main body thereof, and a mounting hole (25) is provided on the auxiliary plate (26) for fixedly mounting on the range hood main body.

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