Electric opening and closing mechanism for smoke deflector of range hood

Abstract

An electric opening and closing mechanism for a smoke deflector of a range hood comprises a base, a first connecting plate arranged on the base is connected with a back plate in a smoke suction port of the range hood, a second connecting plate arranged on the base is connected with a top plate in the smoke suction port of the range hood, and a gear motor is fixedly installed on one side of the base. A main shaft of the gear motor penetrates through the base, is connected with the driving arm on the other side and drives the driving arm to swing; the smoke deflector further comprises a first lever installed on the base in a hinged mode, the other end of the first lever is hinged to the connecting base, the driving arm is hinged to the connecting base through a second lever, and the smoke deflector is installed on the connecting base. The electric opening and closing mechanism for the smoke deflector of the range hood provided by the utility model has the beneficial effects that the opening and closing structure of the smoke deflector is greatly simplified by adopting a five-connecting-rod mechanism.

Description

Technical Field

[0001] The utility model relates to an oil fume machine accessory, in particular to an electric opening and closing mechanism for a smoke guide plate of an oil fume machine. Background Art

[0002] The range hood is one of the important electrical appliances in the kitchen and is used to purify the oil fume generated during the cooking process. At present, range hoods can be roughly divided into two types: direct suction type and side suction type. With the improvement of people's requirements for the aesthetics of the kitchen environment and air quality, the side suction type range hood has gradually become the first choice of consumers due to its beautiful appearance, better oil fume suction effect, and higher oil fume separation performance.

[0003] An existing side suction type range hood usually includes a smoke collecting hood and a smoke guide plate movably installed in front of the smoke collecting hood. The design of the smoke guide plate is aimed at switching between the open and closed states by moving relative to the smoke collecting hood, so as to control the path of the oil fume entering the smoke inlet of the smoke collecting hood. When the smoke guide plate is in the open state, the oil fume can smoothly enter the smoke inlet of the smoke collecting hood; when the smoke guide plate is closed, the oil fume is blocked from entering.

[0004] However, the traditional smoke guide plate is usually hinged to the inside of the range hood body on both sides thereof. The hinge shaft passes through the range hood body and is hinged to the mounting parts on both sides of the smoke guide plate, and then the opening and closing operations of the smoke guide plate are realized through a driving mechanism. Although this driving mechanism in the prior art can achieve the basic functions, there are the following obvious disadvantages in practical applications:

[0005] The existing driving mechanism usually adopts a plurality of complex mechanical parts and electrical components, which not only increases the manufacturing cost of the range hood, but also makes the overall structure relatively complex, bringing inconvenience to installation and maintenance.

[0006] The action response speed of the traditional driving mechanism is relatively slow, resulting in a lag phenomenon in the opening and closing operations of the smoke guide plate, and the user experience is not good. In addition, due to the limitations in the structural design, when the smoke guide plate is opened or closed, it often fails to reach the position or is over-opened, affecting the effective capture and discharge of the oil fume. Content of the Utility Model

[0007] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an electric opening and closing mechanism for a smoke guide plate of an oil fume machine, which has a simple structure, is convenient to use, can effectively improve the driving accuracy and stability, reduce the noise, and thus enhance the overall use experience and product reliability.

[0008] The object of the present utility model is achieved in the following way: An electric opening and closing mechanism for the smoke guide plate of an oil fume extractor, which comprises a base. A first connecting plate is arranged on the base and connected to the back plate inside the smoke suction port of the oil fume extractor. A second connecting plate is arranged on the base and connected to the top plate inside the smoke suction port of the oil fume extractor. A reduction motor is fixedly installed on one side of the base. The main shaft of the reduction motor passes through the base and is connected to the driving arm on the other side thereof, and drives the driving arm to swing.

[0009] It further comprises a first lever hinged to the base. The other end of the first lever is hinged to a connecting seat. The driving arm is hinged to the connecting seat through a second lever. The smoke guide plate is installed on the connecting seat. The base, the driving arm, the first lever, the second lever and the connecting seat form a five-bar linkage mechanism. When the reduction motor rotates, the smoke guide plate is driven to open or close through the linkage mechanism.

[0010] Furthermore: The base comprises a base body and a base arm distributed in a "[" shape. The first connecting plate is arranged at the inner end of the base body and is distributed in a "7" shape with the base. The second connecting plate is arranged on the base arm and is distributed in a "7" shape with the base arm.

[0011] Furthermore: A first limiting plate extends from the base body towards the driving arm.

[0012] Furthermore: A second limiting plate extends from the base arm towards the first lever.

[0013] Furthermore: A first baffle extends from the first lever towards the driving arm.

[0014] Furthermore: A second baffle extends from the connecting seat towards the driving arm.

[0015] The beneficial effects of the present utility model are as follows: 1. The structure is simple, the production cost is low, and the market competitiveness is improved.

[0016] 2. The electric opening and closing mechanism for the smoke guide plate of the oil fume extractor provided by the present utility model adopts a five-bar linkage mechanism, which greatly simplifies the opening and closing structure of the smoke guide plate. Compared with the traditional complex multi-component linkage design, the present utility model only uses one reduction motor and a relatively simple linkage mechanism to achieve precise control of the smoke guide plate, thereby reducing the occupied space, being beneficial to the overall miniaturization design of the oil fume extractor and more efficient space utilization.

[0017] 3. The five-bar linkage mechanism in the present utility model ensures the stability and precision of the smoke guide plate when opening and closing through precise geometric design. Compared with the traditional design, this mechanism can more accurately control the position of the smoke guide plate, avoiding the phenomenon that the smoke guide plate is not in place or over-opened during the opening and closing process, thereby improving the efficiency of oil fume absorption. Description of the Drawings

[0018] Figure 1 、 2 This is the rendering of the overall assembly of the present utility model and the range hood.

[0019] Figure 3 This is the rendering of the assembly of the present utility model and the smoke guide plate.

[0020] Figure 4 、 5 This is the schematic structural diagram of the present utility model in the closed state.

[0021] Figure 6 This is the schematic structural diagram of the present utility model in the open state.

[0022] Figure 7 This is the exploded view of the structure of the present utility model.

[0023] Explanation of reference numerals in the drawings: 1 - base; 11 - first connecting plate; 12 - second connecting plate; 13 - base body; 14 - base arm; 15 - first limiting plate; 16 - second limiting plate; 2 - reduction motor; 21 - main shaft; 3 - driving arm; 4 - first lever; 41 - first baffle; 5 - connecting seat; 51 - second baffle; 6 - second lever; 7 - smoke guide plate. Detailed implementation manners

[0024] The following further specifically describes the present utility model with reference to the drawings. An electric opening and closing mechanism for a smoke guide plate of a range hood includes a base 1. A first connecting plate 11 is provided on the base 1 and connected to the back plate inside the smoke suction port of the range hood. A second connecting plate 12 is provided on the base 1 and connected to the top plate inside the smoke suction port of the range hood. A reduction motor 2 is fixedly installed on one side of the base 1. The main shaft 21 of the reduction motor 2 passes through the base 1 and is connected to the driving arm 3 on the other side thereof, and drives the driving arm 3 to swing.

[0025] It further includes a first lever 4 hinged to the base 1. The other end of the first lever 4 is hinged to a connecting seat 5. The driving arm 3 is hinged to the connecting seat 5 through a second lever 6. The smoke guide plate 7 is installed on the connecting seat 5. The base 1, the driving arm 3, the first lever 4, the second lever 6 and the connecting seat 5 form a five-bar linkage mechanism. When the reduction motor 2 rotates, the smoke guide plate 7 is driven to open or close through the linkage mechanism.

[0026] In one embodiment: The base 1 includes a base body 13 and a base arm 14 distributed in a "7" shape. The first connecting plate 11 is arranged at the inner end of the base body 13 and is distributed in a "7" shape with the base 1. The second connecting plate 12 is arranged on the base arm 14 and is distributed in a "7" shape with the base arm 14.

[0027] In one embodiment, a first limiting plate 15 extends from the base body 13 towards the active arm 3.

[0028] In one embodiment, a second limiting plate 16 extends from the base arm 14 towards the first lever 4.

[0029] In one embodiment, a first baffle 41 extends from the first lever 4 towards the active arm 3.

[0030] In one embodiment, a second baffle 51 extends from the connecting seat 5 towards the active arm 3.

[0031] Working principle: The present utility model relates to an electric opening and closing mechanism for a smoke guide plate of an oil fume extractor. The core lies in the cooperation of a five-link mechanism and a reduction motor to achieve the automatic opening and closing of the smoke guide plate, thereby effectively improving the oil fume absorption efficiency and enhancing the user experience. The following is a detailed description of its working principle:

[0032] Base 1: The base is the basic structural component of the entire device and is fixedly installed inside the oil fume extractor. The base is provided with a first connecting plate 11 and a second connecting plate 12, which are respectively used to connect the back plate and the top plate inside the smoke suction port of the oil fume extractor. The base is connected to different parts of the oil fume extractor through two connecting plates, which can effectively disperse the load and prevent deformation and damage of the connecting parts of the oil fume extractor.

[0033] Reduction motor 2: The reduction motor is fixedly installed on one side of the base 1, and its main shaft 21 passes through the base and is connected to the active arm 3 on the other side. The reduction motor provides power and drives the entire five-link mechanism to move through the active arm.

[0034] Active arm 3: The active arm is directly connected to the main shaft 21 of the reduction motor and is a key component for power transmission. Through the rotational movement of the reduction motor, the active arm swings within a certain range.

[0035] First lever 4 and second lever 6: One end of the first lever 4 is hinged to the base 1, and the other end is hinged to the connecting seat 5; the second lever 6 is connected between the active arm 3 and the connecting seat 5, forming a part of the five-link structure.

[0036] Connecting seat 5 and smoke guide plate 7: The smoke guide plate is fixedly installed on the connecting seat 5. The connecting seat realizes the opening and closing action of the smoke guide plate through the hinges with the first lever and the second lever.

[0037] When the user starts the oil fume extractor, the reduction motor 2 starts to rotate, and its main shaft 21 drives the active arm 3 to swing horizontally along the base 1. The swing of the active arm is transmitted to the connecting seat 5 through the second lever 6. At the same time, the first lever 4 also swings correspondingly on the base 1.

[0038] Due to the geometric design of the five-link mechanism, the rotational motion of the reduction motor is precisely converted into the opening and closing actions of the smoke guide plate 7. When the reduction motor rotates clockwise or counterclockwise, the smoke guide plate can flexibly switch between the open and closed states, thereby controlling whether the oil fume can enter the smoke inlet of the smoke collecting hood.

[0039] When closing the smoke guide plate, the reduction motor applies a downward force through the link mechanism to ensure that the smoke guide plate fits tightly in front of the smoke collecting hood, preventing oil fume from leaking; while when opening the smoke guide plate, the link mechanism ensures that the smoke guide plate quickly and stably moves to the appropriate position to maximize the smoke suction effect.

[0040] Compared with the traditional technology, due to the application of the five-link mechanism, the whole device has a compact structure, saving the internal space of the range hood, which is helpful for the miniaturization and aesthetics of the device. At the same time, the five-link mechanism ensures the stability and accuracy of the smoke guide plate during the opening and closing process. Meanwhile, multiple limit plates are set, which can effectively limit its maximum and minimum opening and closing angles, avoiding the common phenomena of incomplete or excessive opening and closing in the traditional structure, and further improving the oil fume capture efficiency.

[0041] From the detailed description of the above working principle, it can be seen that the electric opening and closing mechanism of the smoke guide plate of the range hood of the present utility model fully considers various requirements in actual use, and has many technical advantages such as a compact structure, precise operation, low noise, and high reliability, providing a more efficient and comfortable kitchen environment for users, so it can be widely promoted and used.

[0042] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An electric opening and closing mechanism for a smoke guide plate of a range hood, characterized in that: It includes a base (1). A first connecting plate (11) is arranged on the base (1) and connected to the back plate inside the smoke suction port of the range hood. A second connecting plate (12) is arranged on the base (1) and connected to the top plate inside the smoke suction port of the range hood. A speed reduction motor (2) is fixedly installed on one side of the base (1). The main shaft (21) of the speed reduction motor (2) passes through the base (1) and is connected to the driving arm (3) on the other side thereof, and drives the driving arm (3) to swing. It further includes a first lever (4) hinged to the base (1). The other end of the first lever (4) is hinged to a connecting seat (5). The driving arm (3) is hinged to the connecting seat (5) through a second lever (6). A smoke guiding plate (7) is installed on the connecting seat (5). The base (1), the driving arm (3), the first lever (4), the second lever (6) and the connecting seat (5) form a five-bar linkage mechanism. When the speed reduction motor (2) rotates, the smoke guiding plate (7) is driven to open or close through the linkage mechanism. The base (1) includes a base body (13) and a base arm (14) distributed in a "7" shape. The first connecting plate (11) is arranged at the inner end of the base body (13) and is distributed in a "7" shape with the base (1). The second connecting plate (12) is arranged on the base arm (14) and is distributed in a "7" shape with the base arm (14). A first limiting plate (15) extends from the base body (13) towards the driving arm (3). A second limiting plate (16) extends from the base arm (14) towards the first lever (4).

2. The electric opening and closing mechanism of the smoke guide plate of the range hood according to claim 1, wherein: A first baffle (41) extends from the first lever (4) towards the driving arm (3).

3. The electric opening and closing mechanism of the smoke guide plate of the range hood according to claim 1, characterized in that: A second baffle (51) extends from the connecting seat (5) towards the driving arm (3).

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