CN219955416U - Movable plate mechanism and smoke exhaust ventilator - Google Patents

Abstract

The utility model relates to a movable plate mechanism and a smoke exhaust ventilator, and belongs to the technical field of electric appliances. Comprises a shell, a swing arm, a driving assembly and a movable plate; the movable plate is connected with the shell through a swing arm, and the driving assembly is used for driving the swing arm to move so as to drive the movable plate to open or close the smoke inlet; the swing arm includes telescopic link and connecting rod, is provided with a plurality of spacing holes on the connecting rod, is provided with first stop gear on the telescopic link, and first stop gear inserts spacing downthehole. The driving assembly drives the swing arm to move so as to drive the movable plate, and after the movable plate is opened, the oil smoke enters from the smoke inlet and is discharged. The telescopic swing arm can further open the smoke inlet through manual operation to release the space at the rear part of the movable plate, so that the movable plate can not block the sight line when a user cleans the range hood, the cleaning work of the user can not be influenced, or the smoke collecting area is larger in a specific use environment of the user. And the space occupied by the telescopic swing arm is smaller, so that the arrangement of other parts is not influenced.

Description

Movable plate mechanism and smoke exhaust ventilator

Technical Field

The utility model belongs to the technical field of electric appliances, and particularly relates to a movable plate mechanism and a range hood.

Background

The fume exhaust fan is also called fume exhaust fan and is one kind of kitchen appliance for purifying kitchen environment. The kitchen range is generally arranged above a kitchen range, can rapidly pump away waste generated in combustion of the range and oil smoke harmful to human bodies in a cooking process, is discharged outdoors, and simultaneously condenses and collects the oil smoke, reduces pollution, purifies air and has the functions of gas protection and explosion prevention. The range hood in the current stage is more and more popular in family life, and the style is also more and more, but good user experience is guaranteed to the better style of again, and the smoking effect of range hood has been decided to the structure of drawing in fume of range hood.

In the prior art, for the side suction machine, a larger movable plate is adopted to achieve the purpose of gathering cigarettes. The angle adjustment is realized through a swing arm hinged with the movable plate. In order to ensure that the movable plate has a larger rotation angle, a connecting point is additionally arranged in the middle of the swing arm, and when the movable plate glass needs to be further opened in angle, the size of the front swing arm is lengthened by manually adjusting the joint positions of the two connecting rods of the hinge by a user, so that the movable plate glass is outwards stretched, and the purpose of increasing the angle of the movable plate is achieved.

However, in the above-mentioned scheme, it is necessary to ensure that the moving plate glass has a sufficient length for supporting when being outwardly stretched, and the size of the swing arm is lengthened. The longer swing arm can occupy the machine inner space, need to leave sufficient space for the swing arm, and the overlength swing arm also produces the interference with internal component easily in the motion process, influences complete machine inner structure.

Disclosure of Invention

The utility model provides a movable plate mechanism with a telescopic swing arm and a range hood, which are used for solving the problem that the swing arm is excessively long to interfere with an internal component.

In a first aspect, a movable plate mechanism is provided, including a housing, a swing arm, a driving assembly, and a movable plate; the movable plate is connected with the shell through a swing arm, and the driving assembly is used for driving the swing arm to move so as to drive the movable plate to open or close the smoke inlet; the swing arm includes telescopic link and connecting rod, is provided with a plurality of spacing holes on the connecting rod, is provided with first stop gear on the telescopic link, and first stop gear inserts spacing downthehole.

In the above-mentioned optional technical scheme, the drive assembly includes driving motor and actuating lever, and the one end of actuating lever is kept away from the one end of movable plate with the swing arm and is articulated, and the output of driving motor is connected to the other end of actuating lever.

In the above-mentioned optional technical scheme, the connecting rod is sleeved outside the telescopic rod, and the telescopic rod can move along the axial direction of the connecting rod.

In the above-mentioned optional technical scheme, still include second stop gear, second stop gear is located between telescopic link and the connecting rod, and second stop gear is used for preventing telescopic link roll-off connecting rod.

In the above-mentioned optional technical scheme, second stop gear includes first stopper and second stopper, and first stopper setting is at the connecting rod inner wall, and the second stopper setting is at the telescopic link outer wall, and first stopper blocks the second stopper when the telescopic link roll-off connecting rod.

In the above-mentioned optional technical scheme, first stop gear includes metal sleeve, spring and button, and the spring is located inside the metal sleeve, and the spring top is connected with the button bottom, and the button top stretches out the metal sleeve, and the part that the button stretched out the metal sleeve is located spacing downthehole.

In the above alternative solution, the metal sleeve is fixed on the outer wall of the telescopic rod or embedded in the telescopic rod.

In the above-mentioned optional technical scheme, the swing arm is provided with two and is located the movable plate both sides respectively, realizes synchronous motion through synchronous connecting rod connection between two swing arms.

In the above-mentioned alternative solution, the length of the telescopic rod is the same as the length of the connecting rod.

In a second aspect, a range hood is provided, including a housing and a smoke inlet disposed on the housing, the smoke inlet being provided with the moving plate mechanism of the first aspect, the moving plate mechanism being used for opening or closing the smoke inlet.

As can be appreciated by those skilled in the art, the present utility model provides a moving plate mechanism and a range hood, comprising a housing, a swing arm, a driving assembly and a moving plate; the movable plate is connected with the shell through the swing arm, and the driving assembly is used for driving the swing arm to move so as to drive the movable plate to open or close the smoke inlet; the swing arm includes telescopic link and connecting rod, be provided with a plurality of spacing holes on the connecting rod, be provided with first stop gear on the telescopic link, first stop gear inserts in the spacing hole. The driving assembly drives the swing arm to move so as to drive the movable plate, and after the movable plate is opened, the oil smoke enters from the smoke inlet and is discharged. The telescopic swing arm can further open the smoke inlet through manual operation to release the space at the rear part of the movable plate, so that the movable plate can not block the sight line when a user cleans the range hood, the cleaning work of the user can not be influenced, or the smoke collecting area is larger in a specific use environment of the user. And the space occupied by the telescopic swing arm is smaller, so that the arrangement of other parts is not influenced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural view of a movable plate mechanism in a fully opened state according to the present utility model;

fig. 2 is a schematic structural view of a movable plate mechanism in a half-open state according to the present utility model;

fig. 3 is a schematic diagram of a structure of the range hood according to the present utility model when the moving plate structure is closed;

fig. 4 is a schematic diagram of a half-open structure of a moving plate of the range hood according to the present utility model;

fig. 5 is a schematic structural view of the range hood moving plate structure provided by the utility model when the range hood moving plate structure is fully opened;

FIG. 6 is a cross-sectional view of a connecting rod of a range hood moving plate structure provided by the utility model;

fig. 7 is a schematic structural diagram of a first limiting mechanism of a moving plate structure provided by the utility model.

Reference numerals:

100-a housing; 200-moving plate; 300-telescopic rod; 310-a second limiting mechanism; 311-a first limiting block; 312-a second limiting block; 320-mounting slots; 330-a first limiting mechanism; 331-button; 332-spring; 333-a metal sleeve; 400-connecting rods; 410-limiting holes; 500-a drive assembly; 600-fixing blocks; 700-upper cover plate; 800-fixing plates; 900-swing arm.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein.

In embodiments of the utility model, words such as "exemplary" or "such as" are used to mean examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "inner", "outer", "upper", "bottom", "front", "rear", etc., if any, are based on those shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The fume exhaust fan is also called fume exhaust fan and is one kind of kitchen appliance for purifying kitchen environment. The kitchen range is arranged above a kitchen range, can rapidly pump away waste generated in combustion of the range and oil smoke harmful to human bodies in a cooking process, is discharged outdoors, and simultaneously condenses and collects the oil smoke, so that pollution is reduced, air is purified, and the kitchen range has the effects of gas protection and explosion prevention.

As described in the background art, the smoke extractor in the prior art is mainly divided into a direct-suction type smoke extractor and a side-suction type smoke extractor.

The side-draught type fume exhauster is one fume exhauster with side air intake and fume separating technology to separate fume effectively. The side-suction European-style range hood has the advantages that the air inlet is closer to the oil smoke source, the generated oil smoke can be locked at the first time, the rising movement distance of the oil smoke can be effectively shortened, and the smoke discharging effect is natural and ideal.

Therefore, for the side suction machine, a larger movable plate is needed to achieve the purpose of gathering the cigarettes. And the angle adjustment is realized through a swing arm hinged with the movable plate. In order to ensure that the movable plate has a larger rotation angle, a connecting point is additionally arranged in the middle of the swing arm, and when the movable plate glass needs to be further opened in angle, the size of the front swing arm is lengthened by manually adjusting the joint positions of the two connecting rods of the hinge by a user, so that the movable plate glass is outwards stretched, and the purpose of increasing the angle of the movable plate is achieved.

However, in the above-mentioned scheme, it is necessary to ensure that the moving plate glass has a sufficient length for supporting when being outwardly stretched, and the size of the swing arm is lengthened. The longer swing arm can occupy the machine inner space, need to leave sufficient space for the swing arm, and the overlength swing arm also produces the interference with internal component easily in the motion process, influences complete machine inner structure.

Therefore, the utility model provides a movable plate mechanism with a telescopic swing arm and a range hood, which are used for solving the problem that the swing arm is overlong and interferes with internal components.

FIG. 1 shows a schematic diagram of a moving plate mechanism in a fully opened state according to the present utility model; comprises a shell 100, a swing arm 900, a driving assembly 500 and a movable plate 200; the movable plate 200 is connected with the shell 100 through a swing arm 900, and the driving assembly 500 is used for driving the swing arm 900 to move so as to drive the movable plate 200 to open or close the smoke inlet;

the swing arm 900 includes a telescopic link 300 and a connecting rod 400, a plurality of limiting holes 410 are formed in the connecting rod 400, a first limiting mechanism 330 is arranged on the telescopic link 300, and the first limiting mechanism 330 is inserted into the limiting holes 410.

In the above technical solution, the number of the limiting holes 410 is 3-5.

The movable plate 200 is a movable plate for opening or closing the smoke inlet of the smoke exhaust ventilator.

In this embodiment, the swing arm 900 is connected to the movable plate 200 by a hinge. The top of the movable plate 200 is connected with the upper cover plate 700 of the shell 100 through a rotary hinge, and the smoke inlet is opened or closed through rotating the movable plate 200.

The movable plate 200 is made of toughened laminated glass. The laminated glass is also called as toughened laminated glass, and is formed by carrying out toughening treatment on 2 layers or more than 2 layers of common float glass. The interlayer is mainly PVB film (the name is polyvinyl butyral), and 2 layers or more than 2 layers of glass are bonded together through a special heating and high-pressure process.

The toughened laminated glass not only has the characteristic of larger impact resistance of the toughened glass, but also has the characteristic of common laminated glass, and even if the glass is cracked, fragments can be stuck into a whole due to the action of the middle cementing layer. So that the falling event of the fragments is effectively prevented, and the personal safety is ensured. Therefore, the utility model is beautiful, convenient to clean and high in safety.

In the above technical solution, the telescopic swing arm 900 may further open the smoke inlet through manual operation to release the space at the rear of the movable plate 200, so that the movable plate 200 is not blocked by the user when cleaning the range hood, and the cleaning operation of the user is not affected, or the smoke collecting area is larger in the specific use environment of the user. And the space occupied by the telescopic swing arm 900 is smaller, and the arrangement of other components is not affected.

For example, since the oil smoke extracted by the range hood has a certain corrosiveness and a high temperature, the materials of the telescopic rod 300 and the connecting rod 400 are preferably selected from high temperature resistant and corrosion resistant stainless steel or titanium alloy, so that the service life and the overall rigidity of the movable plate mechanism are prolonged.

In the above-mentioned alternative technical solution, as shown in fig. 2, fig. 2 is a schematic structural view of a moving plate mechanism in a half open state provided by the present utility model; the driving assembly 500 includes a driving motor and a driving rod, one end of the driving rod is hinged to one end of the swing arm 900 away from the moving plate 200, and the other end of the driving rod is connected to an output end of the driving motor.

Inside the housing 100 is provided a fixing block 600 for fixing the driving motor in the driving assembly 500.

Through the forward rotation and the reverse rotation of the driving motor, the smoke inlet is automatically opened and closed, and the automation of the smoke exhaust ventilator is further improved. Compared with an open type smoke exhaust ventilator, the smoke exhaust ventilator capable of automatically opening and closing the smoke inlet can avoid smoke smell in the smoke exhaust ventilator, and the movable plate 200 is closed when not in use, so that space occupation is saved.

The driving assembly 500 in this embodiment drives the movable plate 200 to open according to the following principle: the driving motor drives the driving rod to rotate, the driving rod rotates to drive the swing arm 900 to move back and forth, and the swing arm 900 is opened and closed through pushing and pulling the plate 200.

In the above-mentioned alternative solution, the connecting rod 400 is sleeved outside the telescopic rod 300, and the telescopic rod 300 can move along the axial direction of the connecting rod 400. Specifically, a blind hole is formed in the axial direction of the connecting rod 400, and the telescopic rod 300 is positioned in the blind hole and reciprocates in the blind hole.

Illustratively, the connecting rod 400 and the telescopic rod 300 are cylindrical or rectangular in shape.

When the driving assembly 500 opens the smoke inlet, if the driving plate 200 needs to be further opened when the smoke exhaust ventilator is cleaned or the smoke collecting effect is improved, but the swing arm 900 in the prior art does not have enough length to support the driving plate 200 to be further opened, the length of the swing arm 900 can only be additionally increased, the increased swing arm 900 is not easy to shrink, and the arrangement of other components in the housing 100 is easily affected.

Therefore, in this embodiment, the swing arm 900 is divided into the telescopic rod 300 and the connecting rod 400, and the telescopic rod 300 is sleeved inside the connecting rod 400, and the first limiting mechanism 330 is matched with the first limiting mechanism 330, so that the start plate 200 is further driven and the limit is realized through the first limiting mechanism 330.

In the above technical solution, when the starting plate 200 is not further opened, the telescopic rod 300 is retracted into the connecting rod 400, which occupies a small space inside the whole machine, and has strong structural integrity and high product aesthetic degree.

When the movable plate 200 needs to be further opened, the movable plate 200 can be pushed again to be further opened only by manually opening the limit of the first limit mechanism 330.

Since the opening angle of the movable plate 200 cannot be accurately grasped by people due to the shielding of the sight line in the process of further opening the movable plate 200 by manually unlocking the first limiting mechanism 330, when the angle is too large, the telescopic rod 300 may slide out of the connecting rod 400, so that the movable plate 200 is not stably supported, and the movable plate 200 is damaged due to the large volume and the large weight of the movable plate 200.

In the above-mentioned alternative technical solution, as shown in fig. 6, fig. 6 is a cross-sectional view of a connecting rod of a moving plate structure of a range hood provided by the present utility model; the swing arm 900 further includes a second limiting mechanism 310, where the second limiting mechanism 310 is located between the telescopic rod 300 and the connecting rod 400, and the second limiting mechanism 310 is used to prevent the telescopic rod 300 from sliding out of the connecting rod 400.

On the premise of no sight line support, people are prevented from excessively beating the movable plate 200 to cause the movable plate 200 to slide down and damage the movable plate 200.

In the above-mentioned alternative solution, the second limiting mechanism 310 includes a first limiting block 311 and a second limiting block 312, where the first limiting block 311 is disposed on the inner wall of the connecting rod 400, the second limiting block 312 is disposed on the outer wall of the telescopic rod 300, and the first limiting block 311 blocks the second limiting block 312 when the telescopic rod 300 slides out of the connecting rod 400.

The first limiting block 311 and the second limiting block 312 are respectively and fixedly connected to the connecting rod 400 and the telescopic rod 300, and when the telescopic rod 300 slides in the connecting rod 400, no action is generated between the first limiting block 311 and the second limiting block 312. When the telescopic rod 300 slides out of the connecting rod 400, the first limiting block 311 clamps the second limiting block 312, so that the telescopic rod 300 is ensured not to slide out of the connecting rod 400.

For example, in this embodiment, the first limiting block 311 is located at the inlet of the through hole of the connecting rod 400, the second limiting block 312 is located at the position of the outer side wall of the telescopic rod 300 near the end, and when the telescopic rod 300 is in the matching state with the connecting rod 400, the first limiting block 311 is located outside the second limiting block 312.

Illustratively, a first limiting block through hole is formed in the outer wall of the connecting rod 400, the first limiting block through hole is communicated with the outside and the blind hole inside the connecting rod 400, and the first limiting block 311 is inserted into the first limiting block through hole and extends out of the first limiting block through hole to block the second limiting block 312.

In the above technical solution, when the telescopic rod 300 needs to be taken out or inserted into the blind hole of the connecting rod during installation or maintenance, the first limiting block 311 is taken out from the through hole of the first limiting block, and the limiting effect between the first limiting block 311 and the second limiting block 312 can be relieved.

The first limiting block 311 is connected with the first limiting block through hole through bolts or bolts.

In the above-mentioned alternative solution, as shown in fig. 7, fig. 7 is a schematic structural diagram of a first limiting mechanism of a moving plate structure provided by the present utility model, where the first limiting mechanism 330 includes a metal sleeve 333, a spring 332 and a button 331, the spring 332 is located inside the metal sleeve 333, the top of the spring 332 is connected to the bottom of the button 331, the top of the button 331 extends out of the metal sleeve 333, and the portion of the button 331 extending out of the metal sleeve 333 is located in the limiting hole 410.

The principle of the first limiting mechanism 330 for limiting is: when the extension rod 300 is pulled to move, the button 331 is located in the metal sleeve 333 due to the pressing of the inner wall of the connection rod 400, and the spring 332 is in a contracted state. When moving to the position of the limiting hole 410, the button 331 is pushed into the limiting hole 410 due to the elastic force of the spring 332, and at this time, the movable plate 200 is at a further opened angle, and the friction force generated between the buttons 331 of the limiting hole 410 realizes limiting.

Illustratively, button 331 is cylindrical in shape. The aperture of the limiting aperture 410 is the same as the diameter of the button 331.

When the further angle adjustment is needed, the adjustment and the limiting can be realized by only pressing the button 331 and then rotating the movable plate 200, so that the embodiment is simple and convenient to operate and is suitable for being used in a household kitchen.

In this embodiment, the plurality of limiting holes 410 are arranged at intervals, so as to realize multi-stage adjustment of the movable plate 200.

In the above alternative, the metal sleeve 333 is fixed to the outer wall of the telescopic rod 300 or is inserted into the mounting groove 320 of the telescopic rod 300. The selection is made according to the sizes of the telescopic link 300 and the connecting link 400.

If the telescopic rod 300 is greatly different from the connecting rod 400 in diameter, the metal sleeve 333 is fixed to the outer wall of the telescopic rod 300.

If the telescopic rod 300 is slightly different from the connecting rod 400 in diameter, a metal sleeve 333 is inserted into the telescopic rod 300 mounting groove 320.

Illustratively, the first limiting mechanism 330 is a latch that is limited by inserting the latch into the interior of the telescoping rod 300 from outside the limiting aperture 410.

Illustratively, the first limiting mechanism 330 is a bolt, and limiting is achieved by screwing the bolt into the interior of the telescoping rod 300 from outside the limiting aperture 410.

In the above-mentioned alternative solution, two swing arms 900 are provided and are respectively located at two sides of the moving plate 200, and the two swing arms 900 are connected by a synchronous link to realize synchronous movement.

Two swing arms 900 connected through synchronous connecting rods simultaneously support the movable plate 200, so that the pressure of the swing arms 900 is reduced, the service life of the swing arms 900 is prolonged, and the defect that the movable plate 200 is damaged due to insufficient supporting force of a single swing arm 900 is avoided.

In the above-mentioned alternative solution, the length of the telescopic link 300 is the same as the length of the connecting link 400 or the length of the telescopic link 300 is smaller than the length of the connecting link 400. The telescopic rod 300 can be completely hidden when the swing arm 900 is contracted, and the simplicity and the attractiveness of the swing arm are guaranteed.

The utility model also provides a smoke exhaust ventilator, which comprises a shell 100 and a smoke inlet arranged on the shell 100, wherein the smoke inlet is provided with the movable plate mechanism, and the movable plate mechanism is used for opening or closing the smoke inlet.

As shown in fig. 3, fig. 3 is a schematic structural diagram of the range hood according to the present utility model when the moving plate structure is closed; the housing 100 includes an upper cover plate 700, the upper cover plate 700 is disposed at the top of the housing 100, the end of the upper cover plate 700 is hinged with a movable plate 200 in the movable plate mechanism, and the movable plate 200 rotates to open the smoke inlet.

One end of a telescopic rod 300 of the swing arm 900 is hinged with the inner wall of the movable plate 200, the other end of the telescopic rod 300 is slidably connected with one end of a connecting rod 400, the other end of the connecting rod 400 is hinged with one end of a driving rod of the driving component 500, and the other end of the driving rod is connected with the output end of the driving motor.

The shell 100 is also provided with a display device and a control device, the working state of the smoke exhaust ventilator is displayed through the display device, and the opening and closing of the smoke exhaust ventilator fan and the opening and closing of the driving assembly 500 are controlled through the control device.

In order to not obstruct the view and save space, when the movable plate 200 is closed, the movable plate 200 is turned inwards and forms 45 degrees with the ground, and a fixed plate 800 with the same angle is connected under the movable plate 200.

As shown in fig. 4, fig. 4 is a schematic structural diagram of the range hood according to the present utility model when the moving plate structure is half opened; the movable plate 200 is opened under the pushing of the driving assembly 500, and at this time, the movable plate 200 is vertical to the ground, and the range hood is in a working state.

As shown in fig. 5, fig. 5 is a schematic structural diagram of the range hood moving plate structure provided by the utility model when the range hood moving plate structure is fully opened; after the first limiting mechanism 330 is manually adjusted by the movable plate 200, the movable plate 200 is further opened, the movable plate 200 is turned outwards at the moment and is 45 degrees with the ground, the range hood is in a cleaning state at the moment, and people clean the interior of the range hood by turning the movable plate 200 by a larger angle.

It should be noted that the angle of outward turning can be adjusted according to the length of the swing arm 900, and is not limited to 45 degrees, and the angle of outward turning can be adjusted at multiple angles.

In the range hood of the present utility model, since the movable plate 200 can be adjusted in multiple stages through the swing arm 900, the turning angle is mainly controlled by the position of the limiting hole 410, and the degree of freedom of adjustment is high.

The telescopic rod 300 of the adjusting mechanism in the swing arm 900 can be hidden, and the occupied space is small. And the swing arm 900 has strong replicability, can be arranged in the smoke extractor of other shapes, and does not influence the design of other smoke extractor components. The structure between the telescopic rod 300 and the connecting rod 400 is firm, and the supporting stability of the swing arm 900 is ensured.

While the present utility model has been described with reference to the preferred embodiments shown in the drawings, it will be readily understood by those skilled in the art that the scope of the utility model is not limited to those specific embodiments, and the above examples are only for illustrating the technical solution of the utility model, not for limiting it; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A movable plate mechanism comprises a shell, a swing arm, a driving assembly and a movable plate; the movable plate is connected with the shell through the swing arm, and the driving assembly is used for driving the swing arm to move so as to drive the movable plate to open or close the smoke inlet; the method is characterized in that:

the swing arm includes telescopic link and connecting rod, be provided with a plurality of spacing holes on the connecting rod, be provided with first stop gear on the telescopic link, first stop gear inserts in the spacing hole.

2. The movable plate mechanism according to claim 1, wherein: the driving assembly comprises a driving motor and a driving rod, one end of the driving rod is hinged with one end of the swing arm, which is far away from the movable plate, and the other end of the driving rod is connected with the output end of the driving motor.

3. The movable plate mechanism according to claim 1, wherein: the connecting rod is sleeved outside the telescopic rod, and the telescopic rod can move along the axial direction of the connecting rod.

4. A movable plate mechanism according to claim 3, wherein: the telescopic rod is characterized by further comprising a second limiting mechanism, wherein the second limiting mechanism is positioned between the telescopic rod and the connecting rod and used for preventing the telescopic rod from sliding out of the connecting rod.

5. The movable plate mechanism according to claim 4, wherein: the second limiting mechanism comprises a first limiting block and a second limiting block, the first limiting block is arranged on the inner wall of the connecting rod, the second limiting block is arranged on the outer wall of the telescopic rod, and the first limiting block is clamped when the telescopic rod slides out of the connecting rod.

6. The movable plate mechanism according to claim 1, wherein: the first limiting mechanism comprises a metal sleeve, a spring and a button, wherein the spring is positioned inside the metal sleeve, the top of the spring is connected with the bottom of the button, the top of the button extends out of the metal sleeve, and the part of the button extending out of the metal sleeve is positioned in the limiting hole.

7. The movable plate mechanism according to claim 6, wherein: the metal sleeve is fixed on the outer wall of the telescopic rod or embedded into the telescopic rod.

8. The moving plate mechanism according to any one of claims 1 to 7, characterized in that: the swing arms are provided with two swing arms and are respectively positioned on two sides of the movable plate, and synchronous movement is realized between the two swing arms through connection of synchronous connecting rods.

9. The moving plate mechanism according to any one of claims 1 to 7, characterized in that: the length of the telescopic rod is the same as that of the connecting rod.

10. A range hood, characterized in that: comprising a housing and a smoke inlet arranged on the housing, wherein a movable plate mechanism as claimed in any one of claims 1-9 is arranged at the smoke inlet, and the movable plate mechanism is used for opening or closing the smoke inlet.