CN217635799U - Plate turnover mechanism and side-draft range hood - Google Patents

Abstract

The utility model discloses a panel turnover mechanism and side suction formula range hood, panel turnover mechanism includes: a flap assembly; the hinge assembly comprises a hinge and two hinge seats, the hinge is fixedly arranged at the upper end part of the turning plate assembly, and the two hinge seats are respectively and rotatably connected with the two opposite ends of the hinge; and the driving assembly is arranged on at least one hinge seat, and the output end of the driving assembly is connected with the turning plate assembly or the hinge. The utility model discloses an install the hinge in turning over board subassembly upper end, not only compromise decoration and rotatory articulated function, reduce moreover and turn over the clearance between board subassembly top and the collection petticoat pipe, furthest prevents to run the cigarette, in addition, through articulated seat, makes things convenient for installing of drive assembly in the collection petticoat pipe.

Description

Panel turnover mechanism and side-draft range hood

Technical Field

The utility model relates to a kitchen electricity technical field especially relates to a panel turnover mechanism and side suction formula range hood.

Background

The conventional range hood is mainly divided into a top-suction range hood and a side-suction range hood according to the distribution of smoke suction ports and the overall appearance. The smoke suction port of the top-suction type range hood is positioned right above the kitchen range, and the oil smoke is sucked quickly when rising to be close to the smoke suction port. The side-draft range hood has a smoke suction port located obliquely above a kitchen range, the smoke suction port is close to the kitchen range, and the smoke is quickly sucked into the smoke suction port at the beginning of rising.

In addition, both the top-suction type range hood and the side-suction type range hood have a common problem that the smoke suction port is far away from an oil smoke source, an oil smoke rising area is large, and when the oil smoke amount is large, the phenomenon of smoke overflow exists.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior correlation technique at least to a certain extent, for this reason, the utility model provides a panel turnover mechanism, its simple structure through with hinge mount in turning over panel assembly upper end, not only compromises decoration and rotatory articulated function, reduces moreover and turns over the clearance between panel assembly top and the collection petticoat pipe, furthest prevents to run the cigarette. In addition, through articulated seat, make things convenient for installing of drive assembly to collect in the petticoat pipe.

The utility model also provides a side suction type range hood with this panel turnover mechanism.

According to the turnover plate mechanism, the turnover plate mechanism is realized through the following technical scheme:

a flap mechanism comprising: a flap assembly; the hinge assembly comprises a hinge and two hinge seats, the hinge is fixedly arranged at the upper end part of the turning plate assembly, and the two hinge seats are respectively and rotatably connected with the two opposite ends of the hinge; and the driving component is arranged on at least one hinge seat, and the output end of the driving component is connected with the turning plate component or the hinge.

In some embodiments, the hinge comprises a hinge part and a mounting part, the hinge part is connected in a P shape, the hinge part is arranged on the top of the flap assembly, two opposite ends of the hinge part are respectively rotatably connected with the two hinge seats, and the mounting part is fixedly connected with the upper end of the back of the flap assembly.

In some embodiments, the hinge device further comprises a first connecting member and a first bearing, and each hinge seat is rotatably connected with the hinge through the first connecting member and the first bearing.

In some embodiments, the first bearing is made of plastic.

In some embodiments, each hinge seat is provided with a mounting hole for the first connecting piece to pass through, the hinge is provided with a shaft hole which is opened towards the hinge seat, the first connecting piece is respectively arranged in the mounting hole and the shaft hole in a penetrating manner, the first bearing is sleeved on the first connecting piece, and at least part of the first bearing extends into the shaft hole.

In some embodiments, the first bearing is circumferentially provided with a boss extending outwards and located outside the shaft hole, and the boss is clamped between the hinge seat and the hinge.

In some embodiments, the flap assembly includes a flap and a flap bracket, the hinge is fixedly connected to the upper end of the flap, the flap bracket is fixedly connected to the back of the flap and is disposed close to the driving assembly and below the hinge, the flap bracket is in clearance fit or connection with the hinge, and the output end of the driving assembly is connected to the flap bracket through a connecting rod assembly.

In some embodiments, an extension part is arranged at one end of the connecting rod assembly, which is far away from the flap bracket, and the connecting rod assembly can synchronously drive the extension part to rotate under the driving of the driving assembly; the driving assembly is provided with a limiting part, and the limiting part is at least used for limiting the rotating angle of the extending part.

In some embodiments, the link assembly includes a driving rod and a driven rod, the output end of the driving assembly is hinged to a first end of the driven rod through the driving rod, and the flap support is hinged to a second end of the driven rod.

In some embodiments, the driving rod is hinged to the first end of the driven rod through the second connecting piece and the second bearing, and/or the second end of the driven rod is hinged to the flap support through the second connecting piece and the second bearing.

In some embodiments, the second bearing is made of plastic.

According to the side-draft range hood provided above, the side-draft range hood is realized by the following technical scheme:

side suction formula range hood, it includes: the front surface of the smoke collecting hood is provided with a panel component and a smoke inlet positioned below the panel component; according to the flap mechanism, the flap assembly is movably mounted on the front side of the smoke inlet and used for opening or closing the smoke inlet, at least part of the hinge is arranged between the panel assembly and the flap, and the two hinge seats are respectively mounted on the left side and the right side of the back of the panel assembly.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the hinge of the fixed connection plate-turning component is arranged between the plate-turning component and the panel component of the smoke-collecting hood, and the hinge is rotationally connected with the smoke-collecting hood through the two hinge seats, so that the hinge not only has the functions of decoration and rotary hinge, improves the aesthetic property of the front of the smoke machine, but also reduces the clearance between the top of the plate-turning component and the smoke-collecting hood after the plate-turning component is opened, and realizes the maximum prevention of smoke leakage;

2. drive assembly passes through articulated seat to be installed in collection petticoat pipe 7, compares in current driving motor through motor support direct mount on collection petticoat pipe, and this embodiment can reduce bolt quantity and assembly process, promotes assembly efficiency.

Drawings

Fig. 1 is a schematic structural view of a panel turnover mechanism in an embodiment of the present invention;

fig. 2 is an exploded view of the panel turnover mechanism in an embodiment of the present invention;

FIG. 3 is a partial enlarged view of portion A of FIG. 2;

fig. 4 is a left side view of the flap assembly of the flap mechanism according to the embodiment of the present invention when closed;

fig. 5 is a left side view of the flap assembly of the flap mechanism according to the embodiment of the present invention when the flap assembly is opened;

fig. 6 is a schematic structural diagram of the range hood in the embodiment of the present invention;

fig. 7 is a schematic structural view of the range hood with the flap assembly hidden in the embodiment of the present invention;

fig. 8 is a schematic view of a partial structure of the range hood according to the embodiment of the present invention, and the flap assembly is in an open state in the drawing.

In the figure: 1-a flap component, 11-a flap, 12-a flap bracket and 121-a flanging; 21-hinge, 2101-shaft hole, 211-hinge, 212-mount, 22-hinge mount, 221-mount hole, 222-lug, 223-locator post; 3-driving component, 31-driver, 32-motor support, 321-limiting part; 41-a first connecting piece, 411-a connecting section, 412-a limiting section, 42-a first bearing and 421-a boss; 5-connecting rod assembly, 51-driving rod, 511-extension part and 52-driven rod; 61-second connector, 62-second bearing, 63-buffer; 7-a smoke collecting hood, 71-a panel component and 72-a smoke inlet; 8-bellows assembly.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

Referring to fig. 1, the present embodiment provides a flap mechanism applied to a range hood, which includes a flap assembly 1, a hinge assembly (not shown in the drawings), and a driving assembly 3, wherein the flap assembly 1 is used for opening or closing a smoke inlet 72 on a smoke collection cover 7. The hinge assembly comprises a hinge 21 and two hinge seats 22, the hinge 21 is fixedly arranged at the upper end part of the flap assembly 1 and is used for covering at least part of a gap between the top of the flap assembly 1 and the panel assembly 71 in the smoke collecting hood 7, so that the gap which is not covered by the hinge 21 is kept within 2mm, and smoke leakage is prevented to the maximum extent. Two articulated seats 22 are respectively rotatably connected at two opposite ends of the hinge 21, and each articulated seat 22 can be disassembled to connect the panel assembly 71 in the fume collecting hood 7, so that the hinge 21 is rotatably connected with the panel assembly 71 in the fume collecting hood 7 through the two articulated seats 22, thereby realizing that the panel assembly 1 is rotatably connected with the fume collecting hood 7 through the articulated assembly. In order to increase the coverage area of the hinge assembly covering the gap between the top of the flap assembly 1 and the panel assembly 71, the length of the hinge assembly in the left-right direction is equal to that of the flap assembly 1, i.e. the left end and the right end of the hinge assembly are respectively flush with the left end and the right end of the flap assembly 1.

In this embodiment, the number of the driving assemblies 3 is one, the driving assemblies 3 are installed on the left hinge seat 22, and the output ends of the driving assemblies 3 are connected with the turning plate assembly 1 or the hinge 21, so that the turning plate assembly 1 is driven to perform turning opening and closing movement through the single driving assembly 3. In other embodiments, the number of the driving assemblies 3 may be two, two driving assemblies 3 are respectively mounted on each hinge seat 22, and the output end of each driving assembly 3 is connected to the flap assembly 1 or the hinge 21.

It can be seen that, through set up the hinge 21 that fixed connection turned over board subassembly 1 between the panel components 71 that turns over board subassembly 1 and collection petticoat pipe 7, hinge 21 rotates through two articulated seats 22 and connects collection petticoat pipe 7 to this, hinge 21 not only compromises decoration and rotatory articulated function, improves the positive aesthetic property of cigarette machine, makes moreover to turn over the clearance reduction between its top and the collection petticoat pipe 7 after board subassembly 1 opens, realizes furthest and prevents to run the cigarette. In addition, through articulated seat 22, the convenience is installed drive assembly 3's firm reliable in collection petticoat pipe 7, compares in current driving motor and passes through motor support direct mount on collection petticoat pipe 7, and this embodiment can reduce bolt quantity and assembly process, promotes assembly efficiency.

Referring to fig. 1-2, in the present embodiment, the flap assembly 1 includes a flap 11 and a flap bracket 12, a hinge 21 is fixedly connected to an upper end of the flap 11, a flap bracket 12 is fixedly connected to a left side of a back of the flap 11, the flap bracket 12 is disposed close to the driving assembly 3 and below the hinge 21, and the flap bracket 12 is in clearance fit with the hinge 21. In addition, a flange 121 extending towards the inner direction of the smoke collecting cover 7 is arranged on one side of the flap support 12 close to the driving assembly 3, and the output end of the driving assembly 3 is in transmission connection with the flange 121 through a connecting rod assembly 5. Therefore, the driving assembly 3 is in transmission connection with the turning plate 11 through the connecting rod assembly 5 and the flanging 121, and the driving assembly 3 can drive the turning plate 11 to perform turning opening and closing movement.

In other embodiments, the flap bracket 12 may be fixedly connected or detachably connected with the hinge 21 to improve the stability and reliability of the installation of the hinge 21 and the flap bracket 12. The quantity of turning over board support 12 can be two, and two turn over board supports 12 bond respectively and turn over the board 11 back left and right sides, and every turns over board support 12 and all is formed with the turn-ups 121 that extends towards the inside direction of collection petticoat pipe 7, and like this, drive assembly 3 installs on leaning on right articulated seat 22, also can be through leaning on right side to turn over board support 12 and connect and turn over board 11, improves and turns over board assembly 1's commonality and suitability.

In order to buffer the closing of the turning plate 11 or reduce the impact between the turning plate 11 and the smoke collecting hood 7, limit pads (not shown in the figure) are respectively and fixedly arranged on the left side and the right side of the lower end of the back of the turning plate 11.

Referring to fig. 1 to 3, the hinge 21 includes a hinge portion 211 and a mounting portion 212 connected to form a "P" shape, the hinge portion 211 is disposed on the top of the turning plate 11, opposite ends of the hinge portion 211 are respectively rotatably connected to the two hinge seats 22, and the mounting portion 212 is fixedly connected to the upper end of the back of the turning plate 11 by adhesion. Thus, the hinge portion 211 is firmly and reliably connected to the flap 11 by the mounting portion 212, and the hinge portion 211 has both functions of decoration, swivel hinge, smoke leakage prevention, and the like.

Referring to fig. 5-6, when the driving assembly 3 drives the flap assembly 1 to open to the maximum angle, since the hinge portion 211 is mounted on the top of the flap 11 through the mounting portion 212, at this time, the hinge portion 211, while functioning as a hinge, covers at least a part of the gap between the top of the flap assembly 1 and the panel assembly 71, so as to prevent the oil smoke from escaping upwards between the top of the flap 11 and the panel assembly 71 to the maximum extent, and significantly suppress the oil smoke leakage. Referring to fig. 4 and 6, when the driving assembly 3 drives the flap assembly 1 to close the smoking opening 72 of the smoke collecting hood 7, since the hinge portion 211 is located between the top of the flap 11 and the panel assembly 71, the hinge portion 211 can perform a hinge function and a decorative function when viewed from the front of the cigarette making machine.

The hinge seat 22 is integrally formed with an outwardly extending lug 222 at a lower end of a front side thereof away from the hinge 21, and the lug 222 is hinged to the hinge 21 through a first connecting assembly (not shown). In this embodiment, the first connecting assembly comprises a first connecting piece 41 and a first bearing 42, the first connecting piece 41 is preferably a shaft bolt, and the first bearing 42 is preferably made of plastic, i.e. the first bearing 42 is a plastic bearing. Each hinge seat 22 is rotatably connected to the hinge 21 by a shaft bolt and a first bearing 42. Therefore, compared with the hinge seat 22 which is only connected with the hinge 21 in a rotating mode through the shaft position bolt, the first bearing 42 is additionally arranged between the hinge seat 22 and the hinge 21, rotating abnormal sound can be avoided, and oil lubrication is not needed because the first bearing 42 is made of plastic, so that the use is more convenient.

The support lug 222 is provided with a mounting hole 221 through which the first connector 41 passes. Shaft holes 2101 opened toward the hinge base 22 are provided at both left and right ends of the hinge portion 211, respectively, and the two shaft holes 2101 may or may not be connected to each other. The first connecting member 41 is respectively inserted into the mounting hole 221 and the shaft hole 2101, the first bearing 42 is sleeved on the first connecting member 41, and at least a portion of the first bearing 42 extends into the shaft hole 2101, that is, at least a portion of the first bearing 42 is disposed between the wall of the shaft hole 2101 and the outer surface of the first connecting member 41, so as to prevent the hinge 21 from rotating abnormally.

Form a spacing step in the mounting hole 221, first connecting piece 41 is at least including connecting linkage segment 411 and spacing section 412 as an organic whole that is connected, the one end that spacing section 412 was kept away from to linkage segment 411 wears to locate behind mounting hole 221 and the first bearing 42 in proper order and stretches into in shaft hole 2101, spacing section 412 stretches into in the mounting hole 221 and with spacing step looks butt or clearance fit, like this, through spacing section 412 and spacing step cooperation, realize the installation depth of restriction first connecting piece 41, with spacing section 412 holding in mounting hole 221 simultaneously, promote the pleasing to the eye degree of outward appearance.

The first bearing 42 is circumferentially provided with a boss 421 extending outwards and located outside the shaft hole 2101, and the boss 421 is clamped between the hinge seat 22 and the hinge 21, so that abnormal rotation noise between the hinge 21 and the hinge seat 22 can be avoided through the boss 421.

Referring to fig. 1-3, the driving assembly 3 includes a driver 31, the driver 31 is mounted on the left hinge seat 22, and an output end of the driver 31 is connected with the flange 121 of the flap bracket 12 through the link assembly 5. In this embodiment, drive assembly 3 still includes motor support 32, motor support 32 includes front bezel and the curb plate that interconnect becomes "L" font, during the installation, the front bezel is prepositioned through the location structure with leaning on left articulated seat 22 earlier, adopt two bolts to fix the front bezel and leaning on left articulated seat 22 together at the panel components 71 back of collection petticoat pipe 7, thus, lean on left articulated seat 2 and motor support 32 to adopt location structure prepositioning, easy to assemble is to the hole, guarantee the benchmark unanimous, promote the assembly precision, and lean on left articulated seat 2 and motor support 32 to share two bolt fastening, reduce the bolt quantity, reduce the assembly process, improve assembly efficiency.

The positioning structure comprises a positioning column 223 and a positioning hole which are matched and spliced, the positioning column 223 is fixedly arranged on the back face of the hinging seat 22 and extends towards the direction of the motor support 32, and correspondingly, the positioning hole is formed in the position, corresponding to the positioning column 223, of the front plate of the motor support 32. In other embodiments, the installation positions of the positioning posts 223 and the positioning holes can be exchanged.

The side plate is located on one side of the front plate close to the turning plate support 12, and is provided with a through hole for the output end of the driver 31 to pass through. The driver 31 is mounted on a side plate of the motor bracket 32, and an output end of the driver 31 protrudes out of the motor bracket 32 through the through hole. Thus, the driver 31 is mounted to the hinge base 22 by the motor bracket 32.

Referring to fig. 1-2, the link assembly 5 is disposed outside the motor bracket 32 and adjacent to the flap bracket 12, and the output end of the driver 31 is drivingly connected to the flap 121 of the flap bracket 12 through the link assembly 5. In order to limit the closing angle of the turning plate 11, a folded edge extending toward the connecting rod assembly 51 is integrally formed at the rear side of the side plate of the motor bracket 32, and the folded edge forms a limiting portion 321, which can be used for limiting the rotation angle of the connecting rod assembly 5 rotating counterclockwise, that is, limiting the angle at which the connecting rod assembly 5 drives the turning plate assembly 1 to close, referring to fig. 4.

In addition, in order to limit the rotation angle of the connecting rod assembly 5 rotating clockwise, that is, to limit the angle at which the connecting rod assembly 5 drives the turning plate assembly 1 to open, an extension portion 511 is disposed at one end of the connecting rod assembly 5 away from the turning plate support 12, and when the driving assembly 3 drives the turning plate assembly 1 to turn over, open and close through the connecting rod assembly 5, the connecting rod assembly 5 can synchronously drive the extension portion 511 to rotate. When the flap assembly 1 is driven to open to the maximum angle, the link assembly 5 drives the extension portion 511 to rotate to abut against the limiting portion 321, referring to fig. 5. Therefore, the opening limit of the turning plate 11 is designed at the end part of the connecting rod assembly 5, the opening position of the driver 31 rotating along the opening direction is directly limited, excessive internal force in the opening state can be avoided, and the reliability of the turning plate mechanism is improved.

Referring to fig. 1-2 and 4-5, the link assembly 5 includes a driving link 51 and a driven link 52, an output end of the driver 31 is connected to one end of the driving link 51, the other end of the driving link 51 is hinged to a first end of the driven link 52 through a second link assembly, and an extension 511 is provided at an end of the driving link 51 away from the driven link 52. The second end of the driven lever 52 is hinged to the flange 121 of the flap support 12 via a second connecting assembly.

In this embodiment, the second connecting assembly includes a second connecting member 61 and a second bearing 62, the second connecting member 61 is an axial rivet, and the axial rivet sequentially penetrates through a connecting hole of the driving rod 51 and a connecting hole of the first end of the driven rod 52. The second bearing 62 is made of plastic, and the second bearing 62 is arranged in a connecting hole at the first end of the driven rod 52 and sleeved on the outer surface of the second connecting piece 61, so that the driving rod 51 is hinged to the first end of the driven rod 52 through the second connecting piece 61 and the second bearing 62, and meanwhile, lubrication is not needed, and abnormal sound caused by rotation of the driven rod 52 is avoided.

In order to reduce the friction between the driven rod 52 and the driving rod 51 and between the driven rod 52 and the shaft rivet, an outward extending stop boss is circumferentially arranged at one end of the second bearing 62 close to the driving rod 51, the stop boss is located between the driven rod 52 and the driving rod 51, in addition, a buffer member 63 located between the limit boss of the second connecting member 61 and the driven rod 52 is sleeved on the second connecting member 61, and the buffer member 63 may be a gasket or a torsion spring.

Similarly, the second end of the driven rod 52 is hinged to the flange 121 of the flap bracket 12 through the second connector 61 and the second bearing 62, which will not be described in detail herein.

Referring to fig. 6-8, the present embodiment further provides a side-draft range hood, which includes a smoke collecting hood 7, a bellows assembly 8 and a flap mechanism as described above. A panel assembly 71 and a smoke inlet 72 positioned below the panel assembly 71 are provided on the front surface of the smoke collection cover 7, so that the smoke inlet 72 is closer to a smoke generating source and can suck smoke in the shortest distance. A partition plate (not shown) may be additionally provided inside the smoke collecting cover 7, and the partition plate divides the smoke collecting cover 7 into a left part and a right part, and correspondingly, also divides the smoke inlet 72 into the left part and the right part, so as to realize double-cavity double suction. A bellows assembly 8 is connected to the top of the fume collecting hood 7.

The flap assembly 1 is movably installed at the front side of the smoke inlet 72 and is used for opening or closing the smoke inlet 72, the hinge part 211 of the hinge 21 is arranged between the bottom of the panel assembly 71 and the top of the flap 11, and the installation part 212 of the hinge 21 is adhered at the upper side of the back of the flap 11. The two hinge bases 22 are respectively installed at left and right sides of the back surface of the panel assembly 71, and the two hinge bases 22 are respectively rotatably connected with left and right ends of the hinge portion 211 through the first connecting member. The driving assembly 3 is installed in the smoke collecting hood 7 through a left hinge seat 22, and the output end of the driving assembly 3 is in transmission connection with the turning plate bracket 12 through a connecting rod assembly 5. In the present embodiment, the thickness of the flap 11 in the front-rear direction is designed to be about 95mm, and the thickness of the hood 7 in the front-rear direction is 136mm or less.

Referring to fig. 6, when the flap assembly 1 closes the smoking opening 72, the panel assembly 71 is flush with the flap assembly 1 for better overall appearance integrity. Referring to fig. 8, when the turning plate 11 is located at the maximum opening angle, the maximum opening angle of the turning plate 11 is about 75 °, at this time, the outer edge of the turning plate 11 is about 300mm away from the back of the smoke collecting hood 7 or the wall surface tightly attached to the smoke collecting hood 7, compared with that pushed outwards by about 174mm in the closed state, and the outer edge of the turning plate 11 is about 530mm away from the kitchen range top, so as to ensure that the turning plate 11 is opened to form a smoke collecting area, which can effectively cover the smoke generation area; secondly, the sight blind area can be perfectly solved; the third panel turnover 11 can provide better flow guiding function, further improve the smoking effect and prevent the smoke overflow problem. In addition, in order to effectively avoid the head collision problem, when the turning plate 11 is opened to the maximum angle, the outer edge of the turning plate does not protrude to the front surface of the air box assembly 8.

It can be seen that, in the side-draft range hood of the present embodiment, the hinge 21 fixedly connected to the flap assembly 1 is disposed between the flap assembly 1 and the panel assembly 71, and the hinge 21 is rotatably connected to the smoke collecting hood 7 through the two hinge seats 22, so that the hinge 21 not only has the decoration and rotation hinge functions, and improves the aesthetic property of the front surface of the range hood, but also reduces the gap between the top of the flap 11 and the panel assembly 71 after the flap 11 is opened, thereby preventing smoke leakage to the maximum extent. Drive assembly 3 passes through articulated seat 22 and stabilizes reliably to be installed in collection petticoat pipe 7, compares in current driving motor through motor support direct mount on collection petticoat pipe 7, can reduce bolt quantity and assembly process, promotes assembly efficiency.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (12)

1. A flap mechanism, comprising:

a flap assembly (1);

the hinge assembly comprises a hinge (21) and two hinge seats (22), the hinge (21) is fixedly arranged at the upper end part of the flap assembly (1), and the two hinge seats (22) are respectively and rotatably connected with the two opposite ends of the hinge (21);

the driving component (3) is arranged on at least one hinge seat (22), and the output end of the driving component (3) is connected with the turning plate component (1) or the hinge (21).

2. The flap mechanism according to claim 1, wherein the hinge (21) comprises a hinge portion (211) and a mounting portion (212) connected to form a "P" shape, the hinge portion (211) is disposed on the top of the flap assembly (1), and opposite ends of the hinge portion are respectively rotatably connected to the two hinge seats (22), and the mounting portion (212) is fixedly connected to the upper end of the back of the flap assembly (1).

3. Flap mechanism according to claim 1 or 2, characterized in that it further comprises a first connector (41) and a first bearing (42), each of said hinge seats (22) being rotatably connected to said hinge (21) by means of said first connector (41) and said first bearing (42).

4. Flap mechanism according to claim 3, characterized in that the first bearing (42) is made of plastic.

5. A flap mechanism according to claim 3, wherein each of said hinge seats (22) is provided with a mounting hole (221) for said first connecting member (41) to pass through, said hinge (21) is provided with a shaft hole (2101) opening towards said hinge seat (22), said first connecting member (41) is respectively inserted through said mounting hole (221) and said shaft hole (2101), said first bearing (42) is sleeved on said first connecting member (41) and at least a portion of it extends into said shaft hole (2101).

6. A flap mechanism according to claim 5, characterized in that the first bearing (42) is provided with a boss (421) extending outwards and located outside the shaft hole, and the boss (421) is clamped between the hinge seat (22) and the hinge (21).

7. The flap mechanism according to claim 1, characterized in that the flap assembly (1) comprises a flap (11) and a flap support (12), the hinge (21) is fixedly connected to the upper end of the flap (11), the flap support (12) arranged close to the driving assembly (3) and below the hinge (21) is fixedly connected to the back of the flap (11), the flap support (12) is in clearance fit or connection with the hinge (21), and the output end of the driving assembly (3) is connected with the flap support (12) through a connecting rod assembly (5).

8. The flap mechanism according to claim 7, wherein an extension part (511) is arranged at one end of the connecting rod assembly (5) far away from the flap bracket (12), and the connecting rod assembly (5) can synchronously drive the extension part (511) to rotate under the driving of the driving assembly (3); drive assembly (3) are equipped with spacing portion (321), spacing portion (321) are used for at least limiting the turned angle of extension portion (511).

9. Flap mechanism according to claim 7 or 8, characterized in that the connecting rod assembly (5) comprises a driving rod (51) and a driven rod (52), the output end of the driving assembly (3) is hinged to a first end of the driven rod (52) through the driving rod (51), and the flap support (12) is hinged to a second end of the driven rod (52).

10. A flap mechanism according to claim 9, further comprising a second link (61) and a second bearing (62), wherein the driving link (51) is hinged to the first end of the driven link (52) via the second link (61) and the second bearing (62), and/or wherein the second end of the driven link (52) is hinged to the flap support (12) via the second link (61) and the second bearing (62).

11. Flap mechanism according to claim 10, characterized in that the second bearing (62) is made of plastic.

12. Side suction type range hood, its characterized in that includes:

the smoke collecting hood (7) is provided with a panel component (71) and a smoke inlet (72) positioned below the panel component (71) on the front surface of the smoke collecting hood (7);

a flap mechanism as claimed in any one of claims 1-11, wherein said flap assembly (1) is movably mounted in front of said smoke inlet (72) and is adapted to open or close said smoke inlet (72), at least a portion of said hinge (21) is disposed between said panel assembly (71) and said flap (11), and two of said hinge seats (22) are mounted on the left and right sides of the back of said panel assembly (71), respectively.

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