Smoke barrier movement mechanism and range hood

Abstract

The utility model relates to a smoke barrier movement mechanism and a range hood, the smoke barrier movement mechanism comprises: a smoke barrier having a first side and a second side opposite to each other in the width direction and a first end and a second end opposite to each other in the length direction; a rotating shaft piece is arranged on the first side edge of the smoke barrier, the driving mechanism comprises a driving end arranged at the first end of the smoke barrier and a driven end arranged at the second end of the smoke barrier, the driving end comprises a driving piece, a first support arranged at the first end of the smoke barrier and a transmission assembly, and the driven end comprises a second support arranged at the second end of the smoke barrier. The two ends of the rotating shaft piece are connected with the first support and the second support respectively, so that power generated when the first support rotates along with the smoke barrier is transmitted to the second support, and the first end and the second end of the smoke barrier act synchronously. The smoke barrier has the advantages that the structure of a motion mechanism of the smoke barrier is effectively simplified, and the motion consistency of the left side and the right side of the smoke barrier can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to range hood technical field especially relates to a baffle plate movement mechanism and range hood. BACKGROUND

[0002] Range hood is a kind of kitchen appliance that purifies kitchen environment.The traditional range hood generally includes top suction type range hood and near suction type range hood, and the front side air inlet of the near suction type range hood is provided with a baffle plate capable of being deflected to open and close under the drive of a movement mechanism.Different forms of range hood have more or less differences in movement mechanism, some use electric push rod movement connecting rod movement, some use worm reduction motor to push connecting rod movement, and most drive the baffle plate to open and close through four-bar linkage mechanism.The movement mechanism that drives the baffle plate to open and close through four-bar linkage has a problem, that is, the baffle plate of the driving end is closed very tightly with the side plate, and the baffle plate of the driven end is often closed relatively loosely with the side plate, sometimes there is obvious gap, which affects the delicacy of the product.

[0003] In order to solve the above technical problems, the Chinese invention patent application with application number CN202110357159.9 (application publication number CN115164243A) discloses a baffle plate movement mechanism, which includes a baffle plate and a movement mechanism, and the movement mechanism includes a driving mechanism and a transmission mechanism.The transmission mechanism includes: a first hinge as a driven arm having opposite first and second ends, the second end of the first hinge being rotatably connected with the baffle plate; a second hinge as a driving arm driven by the driving mechanism, having opposite first and second ends, the second end of the second hinge being rotatably connected with the baffle plate, and the connection position of the first hinge with the baffle plate is located above the connection position of the second hinge with the baffle plate; a transmission rod connected between the driving mechanism and the first end of the second hinge, transmitting the driving force of the driving mechanism to the second hinge.In order to maintain the consistency of the movement of the two sides of the baffle plate, the movement mechanism includes a driving end and a driven end, the driving end includes the above-mentioned driving mechanism, the driving end and the driven end are respectively arranged on the two sides of the baffle plate, the driving end and the driven end each include the transmission mechanism, the driving end and the driven end are connected by a connecting shaft to act synchronously, the two ends of the connecting shaft are respectively connected and fixed with the first connecting rod of the driving end and the first connecting rod of the driven end, and the output end of the driving mechanism drives the connecting shaft to rotate around its own axis.

[0004] However, the movement mechanism in the above-mentioned patent application still has certain deficiencies, the connecting shaft and the corresponding hinge assembly for realizing the synchronous action of the driving end and the driven end are arranged on the support beam on the side of the baffle plate facing the cabinet, which occupies a large space on the back of the baffle plate and is prone to interference with other components in the cabinet, therefore, how to simplify the structure of the movement mechanism of the baffle plate and ensure the consistency of the movement of the left and right sides of the baffle plate has become a technical problem to be solved by the technical personnel in the field. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a smoke baffle movement mechanism that, in view of the current state of the prior art, can effectively simplify the structure of the smoke baffle movement mechanism and ensure the consistency of the movement of the left and right sides of the smoke baffle.

[0006] The second technical problem to be solved by this utility model is to provide a range hood that applies the above-mentioned smoke baffle movement mechanism, in view of the current state of the prior art.

[0007] The technical solution adopted by this utility model to solve the first technical problem is: a smoke baffle moving mechanism, comprising:

[0008] A smoke baffle has a first side and a second side opposite to each other in the width direction, and a first end and a second end opposite to each other in the length direction;

[0009] A drive mechanism is connected to the smoke baffle, thereby driving the smoke baffle to rotate around its first side.

[0010] The smoke baffle is provided with a rotating shaft on its first side, which is arranged along the extension direction of the first side and fixed relative to the smoke baffle. The driving mechanism includes an active end arranged at the first end of the smoke baffle and a driven end arranged at the second end. The active end includes a driving member, a first bracket provided at the first end of the smoke baffle, and a transmission assembly for transmitting the power of the driving member to the smoke baffle to drive the smoke baffle to rotate. The driven end includes a second bracket provided at the second end of the smoke baffle. The two ends of the rotating shaft are respectively connected to the first bracket and the second bracket, thereby transmitting the power of the first bracket rotating with the smoke baffle to the second bracket, so that the first end and the second end of the smoke baffle move synchronously.

[0011] To achieve synchronous movement of the first and second ends of the smoke baffle via the aforementioned pivot member, the pivot member includes a connecting plate extending along the length of the smoke baffle and used to connect with the wall of the smoke baffle, and a shaft portion disposed at the side edge of the connecting plate. The shaft portion is disposed adjacent to the first side edge of the smoke baffle. A first shaft hole and a second shaft hole are respectively opened at both ends of the shaft portion along its length. A first pin that can rotate with the pivot member is inserted into the first shaft hole, and a second pin that can rotate with the pivot member is inserted into the second shaft hole. A first opening is opened on the first bracket for the first pin to pass through and for transmitting torque in the circumferential direction, and a second opening is opened on the second bracket for the second pin to pass through and for transmitting torque in the circumferential direction.

[0012] In order to effectively transmit torque through the cooperation of the first opening and the first pin shaft and the cooperation of the second opening and the second pin shaft, the first opening is a non-circular hole, and the first pin shaft comprises a first driving section and a first connecting section which are sequentially connected along the axial direction of the first pin shaft, and the cross section of the first driving section is configured as a non-circular structure to match the first opening.

[0013] The second opening is a non-circular hole, and the second pin shaft comprises a second driving section and a second connecting section which are sequentially connected along the axial direction of the second pin shaft, and the cross section of the second driving section is configured as a non-circular structure to match the second opening.

[0014] The above-mentioned "non-circular hole" can be an elliptical hole, a square hole or other irregular hole structure capable of transmitting torque in the circumferential direction, and correspondingly, the above-mentioned "non-circular structure" can be an elliptical profile, a square profile or other irregular outer profile structure capable of transmitting torque in the circumferential direction.

[0015] In order to limit the axial movement of the shaft, the first connecting section has a circular cross section with a radial dimension greater than that of the first driving section, thereby forming a first limiting step at the joint position of the two sections, and a first limiting sleeve is further provided on the first driving section and abuts between the first support and the first limiting step.

[0016] The second connecting section has a circular cross section with a radial dimension greater than that of the second driving section, thereby forming a second limiting step at the joint position of the two sections, and a second limiting sleeve is further provided on the second driving section and abuts between the second support and the second limiting step.

[0017] In order to realize the rotational connection of the smoke baffle with the external installation body (such as the housing of an extractor hood), a first fixing seat and a second fixing seat are further provided adjacent to the first end and the second end of the smoke baffle respectively and used for fixing with the external installation body, the first pin shaft is rotatably arranged on the first fixing seat through the first connecting section thereof, and the second pin shaft is rotatably arranged on the second fixing seat through the second connecting section thereof.

[0018] As an improvement, a first shaft hole is formed in the first fixing seat for rotationally constraining the first connecting section of the first pin shaft therein, and a second shaft hole is formed in the second fixing seat for rotationally constraining the second connecting section of the second pin shaft therein.

[0019] In order to further simplify the structure of the active end of the driving mechanism, the driving member includes a driving motor, which is arranged on the first fixed seat. The transmission component includes a rocker and a connecting rod. The first end of the rocker is connected to the output shaft of the driving motor and can rotate around its first end under the drive of the driving motor. The second end of the rocker is rotatably connected to the first end of the connecting rod, and the second end of the connecting rod is connected to the smoke baffle. Of course, it can be conceived that the active end of the driving mechanism can also drive the smoke baffle to rotate by using an electric push rod.

[0020] To ensure the overall aesthetics of the smoke baffle, both the first bracket and the second bracket are arranged on the back of the smoke baffle, and the second end of the connecting rod is rotatably connected to the first bracket. Connecting the second end of the connecting rod to the first bracket can eliminate the need to additionally provide a smoke baffle bracket connected to the connecting rod.

[0021] Generally speaking, the connecting plate of the rotating shaft member can be arranged on the front or back of the smoke baffle or in the sandwich layer in the wall thickness direction of the smoke baffle. However, to further ensure the overall aesthetics of the smoke baffle, the connecting plate of the rotating shaft member is adhesively connected to the back of the smoke baffle.

[0022] Considering that conventional smoke baffles are mostly glass plate assemblies, due to their self-weight, there is inevitably a problem of insufficient rigidity, and obvious bending deformation will occur during the deflection process. To strengthen the rigidity of the smoke baffle, both the first bracket and the second bracket are arranged on the back of the smoke baffle and extend along the width direction of the smoke baffle. A reinforcing plate extending along the length direction of the smoke baffle is also adhesively provided at a position on the back of the smoke baffle adjacent to the second side edge. The first bracket, the reinforcing plate, the second bracket, and the connecting plate of the rotating shaft member are connected end to end in sequence to form a "mouth" - shaped structure arrangement. The above-mentioned rotating shaft member, first bracket, second bracket, reinforcing plate, and the main body of the smoke baffle are all independent parts, and each independent part has a certain rigidity. The rotating shaft member, first bracket, second bracket, reinforcing plate and other parts are connected end to end to form a "mouth" - shaped structure (which can also be considered as a double - square structure). After these four independent parts are adhered to the back of the smoke baffle, the rigidity of the smoke baffle can be greatly enhanced. With the above - mentioned structural design, even without synchronously transmitting torque through the rotating shaft member, the power can be transmitted from the active end of the smoke baffle to the driven end of the smoke baffle. After further setting the matching structure for the rotating shaft member and the corresponding bracket to transmit torque, this effect can be further enhanced, playing a role of combining strengths to transmit force, and effectively reducing the deformation problem of the main body of the smoke baffle.

[0023] The technical solution adopted by the present utility model to solve the second technical problem is as follows: An oil fume extractor includes a housing and a smoke baffle. An air inlet is provided on the front side of the housing, and the smoke baffle is rotatably connected to the air inlet of the housing through the above - mentioned smoke baffle movement mechanism.

[0024] Compared with the prior art, the advantages of the utility model are: the smoke baffle is rotatably connected with the external installation main body through the rotating shaft part arranged at the first side edge thereof, the rotating shaft part is arranged along the extension direction of the first side edge of the smoke baffle and is fixed relative to the smoke baffle, the two ends of the rotating shaft part are connected with the first support and the second support respectively, so when the smoke baffle is rotated by the driving part of the driving mechanism, the power of the rotation of the first support along with the smoke baffle can be transmitted to the second support through the rotating shaft part, the first end and the second end of the smoke baffle are synchronized, the deformation problem of the smoke baffle in the rotation process caused by the force applied only at the driving end is effectively improved, the deflection actions of the two ends of the smoke baffle are consistent, and the delicacy of the smoke baffle in the closed state is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional structure schematic diagram of the range hood of the utility model embodiment;

[0026] Figure 2 It is another angle three-dimensional structure schematic diagram of the range hood of the utility model embodiment;

[0027] Figure 3 It is a three-dimensional structure schematic diagram of the range hood of the utility model embodiment after the left side plate of the smoke collecting cover is omitted;

[0028] Figure 4 It is a three-dimensional structure schematic diagram of the range hood of the utility model embodiment after the right side plate of the smoke collecting cover is omitted;

[0029] Figure 5 It is a three-dimensional structure schematic diagram of the smoke baffle movement mechanism of the utility model embodiment (showing the upper panel of the smoke collecting cover);

[0030] Figure 6 It is a three-dimensional structure schematic diagram of the smoke baffle movement mechanism of the utility model embodiment;

[0031] Figure 7 It is an exploded view of the driving end of the smoke baffle movement mechanism of the utility model embodiment;

[0032] Figure 8 It is an exploded view of the driven end of the smoke baffle movement mechanism of the utility model embodiment;

[0033] Figure 9 It is another angle exploded view of the driven end of the smoke baffle movement mechanism of the utility model embodiment. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0036] Figures 1-9 This illustration shows a preferred embodiment of the smoke baffle movement mechanism and range hood of this utility model. The range hood includes a housing 10 and a centrifugal fan disposed within the housing 10. The housing 10 generally includes a fan frame 11 and a smoke collection hood 12 disposed at the bottom of the fan frame 11. The inner cavity of the fan frame 11 is connected to the inner cavity of the smoke collection hood 12. The front sidewall of the smoke collection hood 12 slopes backward from top to bottom and has an air inlet 120, through which external smoke can enter the smoke collection hood 12. The centrifugal fan is disposed within the fan frame 11. When the centrifugal fan operates, it generates negative pressure, allowing external fumes to be drawn into the smoke collection hood 12 through the air inlet 120. An oil screen is also provided at the air inlet 120 of the smoke collection hood 12 for filtering fumes. An oil cup 13 is provided at the bottom of the smoke collection hood 12. The oil cup 13 is a long strip extending left and right to collect oil stains flowing down from the smoke collection hood 12. The front of the smoke hood 12 is also provided with a smoke baffle 20 that can deflect back and forth relative to the smoke hood 12. The smoke baffle 20 is rotatably connected to the main body of the smoke hood 12 and is driven by a motion mechanism to deflect forward to open the air inlet 120 and deflect backward to block and close the air inlet 120.

[0037] See Figure 2 and Figure 6 The air inlet 120 on the front side wall of the smoke hood 12 is a strip-shaped opening extending to the left and right. Correspondingly, the main body of the smoke baffle 20 is also a strip-shaped plate extending in the left and right direction. Specifically, the smoke baffle 20 has a first side 201 and a second side 202 opposite to each other in the width direction, and a first end 203 and a second end 204 opposite to each other in the length direction. The first side 201 of the smoke baffle 20 is on the upper side.

[0038] See Figure 3 and Figure 5, the front side wall of the smoke collecting hood 12 corresponds to the plate body above the air inlet 120, which is the upper panel 121, wherein the upper panel 121 also inclines backward from top to bottom. The back surface of the first end 203 and the second end 204 of the smoke baffle 20 is respectively provided with a first support 26 and a second support 27, the first support 26 and the second support 27 are attached to the back surface of the smoke baffle 20 and are arranged along the width direction of the smoke baffle 20. Specifically, the first support 26 and the second support 27 both have a vertical plate which is substantially perpendicular to the main body of the smoke baffle 20 and extends along the width direction of the smoke baffle 20, the end of the vertical plate of the first support 26 and the second support 27 extends to the first side edge 201 of the smoke baffle 20, and a first opening 261 and a second opening 271 are respectively arranged corresponding to the first side edge 201. The back surface of the smoke baffle 20 is also provided with a rotating shaft 21 adjacent to the first side edge 201 of the smoke baffle 20, wherein the rotating shaft 21 includes a connecting plate 211 extending along the length direction of the smoke baffle 20 and a shaft portion 212 arranged at the side edge of the connecting plate 211, the length dimension of the shaft portion 212 is substantially the same as the length dimension of the connecting plate 211, and the outer contour of the shaft portion 212 can be designed as a rod structure. The connecting plate 211 of the rotating shaft 21 can be connected to the back surface of the smoke baffle 20 by adhesion. After the rotating shaft 21 is installed in place on the main body of the smoke baffle 20, the shaft portion 212 thereof is arranged adjacent to the first side edge 201 of the smoke baffle 20, and from the front, the rotating shaft 21 can better shield the gap between the smoke baffle 20 and the upper panel 121 of the smoke collecting hood 12, thereby ensuring the aesthetic appearance. The shaft portion 212 of the rotating shaft 21 is provided with a first shaft hole 2121 and a second shaft hole 2122 at both ends in the length direction, a first pin shaft 23 capable of rotating with the rotating shaft 21 is inserted into the first shaft hole 2121, and a second pin shaft 24 capable of rotating with the rotating shaft 21 is inserted into the second shaft hole 2122. The first pin shaft 23 can transmit torque in the circumferential direction by penetrating through the first opening 261 of the first support 26, and the second pin shaft 24 can transmit torque in the circumferential direction by penetrating through the second opening 271 of the second support 27. Specifically, the first pin shaft 23 includes a first driving section 231 and a first connecting section 232 connected in sequence along the axial direction of the first pin shaft 23, the cross section of the first connecting section 232 is circular, and the radial dimension thereof is greater than the radial dimension of the first driving section 231, thereby forming a first limiting step 230 at the connecting position of the first driving section 231 and the first connecting section 232. Similarly, the second pin shaft 24 includes a second driving section 241 and a second connecting section 242 connected in sequence along the axial direction of the second pin shaft 24, the cross section of the second connecting section 242 is circular, and the radial dimension thereof is greater than the radial dimension of the second driving section 241, thereby forming a second limiting step 240 at the connecting position of the second driving section 241 and the second connecting section 242. The first opening 261 of the first support 26 is a non-circular hole, the cross section of the first driving section 231 of the first pin shaft 23 is configured as a non-circular structure to match the first opening 261. Similarly, the second opening 271 is a non-circular hole, and the cross section of the second driving section 241 of the second pin shaft 24 is configured as a non-circular structure to match the second opening 271.The "non-circular hole" described above can be an elliptical hole, a square hole or other irregular hole structure capable of transmitting torque in the circumferential direction, and correspondingly, the "non-circular structure" described above can be an elliptical profile, a square profile or other irregular outer profile structure capable of transmitting torque in the circumferential direction. Figure 7 and Figure 8 As shown, the first opening 261 and the second opening 271 are both hexagonal holes, and the cross section of the first driving section 231 of the first pin shaft 23 and the cross section of the second driving section 241 of the second pin shaft 24 are also both hexagonal profile structures.

[0039] Continuing to refer to Figure 5 In order to achieve the rotational connection of the smoke baffle 20 and the external installation main body (such as the cabinet 10 of the range hood), the inner wall of the upper panel 121 of the smoke collecting hood 12 is further provided with a first fixing seat 31 and a second fixing seat 32 on the left and right sides, respectively. The first fixing seat 31 and the second fixing seat 32 are respectively arranged adjacent to the first end portion 203 and the second end portion 204 of the smoke baffle 20. The first fixing seat 31 has a portion extending to the bottom edge position of the upper panel 121, and a first pivot hole 310 is formed in the portion for rotationally restraining the first connecting section 232 of the first pin shaft 23. Similarly, the second fixing seat 32 has a portion extending to the bottom edge position of the upper panel 121, and a second pivot hole 320 is formed in the portion for rotationally restraining the second connecting section 242 of the second pin shaft 24. The first pivot hole 310 and the second pivot hole 320 are both circular holes, wherein the first pivot hole 310 and the second pivot hole 320 can be through hole structures penetrating through the first fixing seat 31 and the second fixing seat 32 from left to right. The first pivot hole 310 is provided with a cover 311 at one end away from the pivot member 21.

[0040] Referring to Figure 7 and Figure 8 In the preferred embodiment, the first driving section 231 of the first pin shaft 23 is further sleeved with a first limiting sleeve 251 abutting between the first support 26 and the first limiting step 230. The inner hole of the first limiting sleeve 251 is a hexagonal hole matched with the first driving section 231. The second driving section 241 of the second pin shaft 24 is further sleeved with a second limiting sleeve 252 abutting between the second support 27 and the second limiting step 240. The inner hole of the second limiting sleeve 252 is also a hexagonal hole matched with the second driving section 241. The first limiting sleeve 251 and the second limiting sleeve 252 described above can be selected according to actual needs. The thickness of the two limiting sleeves can be appropriately sized. The two limiting sleeves can limit the pivot member 21, the first pin shaft 23 and the second pin shaft 24 in the axial direction, so as to avoid the problem of shaking or deviation of the smoke baffle 20 in the axial direction.

[0041] Referring to Figure 6The smoke baffle moving mechanism comprises a driving mechanism, which comprises a driving end arranged at the first end 203 of the smoke baffle 20 and a driven end arranged at the second end 204 of the smoke baffle 20. The driving end comprises a driving member, a first support 26 arranged at the first end 203 of the smoke baffle 20, and a transmission assembly for transmitting the power of the driving member to the smoke baffle 20 to drive the smoke baffle 20 to rotate. The second support 27 arranged at the back of the second end 204 of the smoke baffle 20, the second pin shaft 24 at the end of the rotating shaft member 21, and other components correspondingly constitute the driven end of the driving mechanism.

[0042] The driving member comprises a driving motor 41 arranged on the first fixed seat 31. As shown in Figure 6 In order to facilitate the fixed installation of the driving motor 41, the first fixed seat 31 is further provided with a mounting bracket 312 extending towards the inside of the cabinet 10, and the driving motor 41 is mounted on the mounting bracket 312. The transmission assembly comprises a rocker 42 and a connecting rod 43. The first end of the rocker 42 is connected with the output shaft of the driving motor 41 and can rotate around the first end under the driving of the driving motor 41. The second end of the rocker 42 is rotationally connected with the first end of the connecting rod 43, and the second end of the connecting rod 43 is rotationally connected with the vertical plate on the first support 26 on the back of the smoke baffle 20 through a pin shaft.

[0043] When the driving motor 41 operates, the power is transmitted to the first support 26 on the back of the smoke baffle 20 through the transmission cooperation of the rocker 42 and the connecting rod 43, and the first support 26 drives the main body of the smoke baffle 20 to rotate around the rotating shaft member 21. At the same time, since the torque is also transmitted between the first opening 261 of the first support 26 and the first pin shaft 23 on the rotating shaft member 21 and between the second opening 271 of the second support 27 and the second pin shaft 24 of the rotating shaft member 21, the rotating shaft member 21 also transmits the power for rotating the first support 26 with the smoke baffle 20 to the second support 27, so that the first end 203 and the second end 204 of the smoke baffle 20 operate synchronously. This effectively improves the deformation problem of the smoke baffle 20 during rotation caused by applying force only at the driving end, makes the deflection actions of the left and right sides of the smoke baffle 20 consistent, and ensures the delicacy of the smoke baffle 20 in the closed state. The rotating shaft member 21 for transmitting torque between the driving end and the driven end is arranged adjacent to the first side edge 201 of the smoke baffle 20, and rotationally connected with the external installation main body through the rotating shaft member 21, which effectively simplifies the structure of the mechanism of the smoke baffle 20 and does not occupy a large space in the space area on the back side of the smoke baffle 20, reducing the interference problem with other components.

[0044] Please continue to refer to Figure 6, considering that the conventional smoke baffle 20 is mostly a glass plate assembly, and due to the self-weight, it is inevitable to have the problem of insufficient rigidity, and obvious bending deformation will occur during deflection, in order to strengthen the rigidity of the smoke baffle 20, the above-mentioned first support 26 and the second support 27 are arranged on the back surface of the smoke baffle 20, and are arranged extending in the width direction of the smoke baffle 20, and the back surface of the smoke baffle 20 is further attached with a reinforcing plate 28 extending in the length direction of the smoke baffle 20 at the position adjacent to the second side edge 202, in this way, the first support 26, the reinforcing plate 28, the second support 27 and the connecting plate 211 of the shaft member 21 are sequentially connected in a "mouth" type structure. The above-mentioned shaft member 21, first support 26, second support 27, reinforcing plate 28 and smoke baffle 20 body are all independent parts, each independent part has a certain rigidity (metal plates such as steel plates or aluminum plates or aluminum alloy plates can be preferably selected), the shaft member 21, the first support 26, the second support 27, the reinforcing plate 28 and other parts are connected end to end to form a "mouth" type structure (which can also be considered as a back-to-back shape), after the four independent parts are bonded to the back surface of the smoke baffle 20, the rigidity of the smoke baffle 20 can be greatly enhanced, the above-mentioned structure design can transmit power from the driving end of the smoke baffle 20 to the driven end of the smoke baffle 20 even without synchronous torque transmission through the shaft member 21 (i.e. through the first pin shaft 23 and the second pin shaft 24 at the two ends of the shaft member 21 cooperating with the corresponding supports), thereby reducing the deformation problem of the smoke baffle 20, and after further arranging the cooperation structure of the above-mentioned shaft member 21 and the corresponding supports to transmit torque, this effect can be further enhanced, which plays a role of strong combination of force transmission, effectively reducing the deformation problem of the smoke baffle 20 body.

Claims

1. A smoke screen plate movement mechanism, comprising: a smoke screen plate (20) having a first side edge (201) and a second side edge (202) opposite to each other in a width direction, and a first end (203) and a second end (204) opposite to each other in a length direction; a driving mechanism connected to the smoke screen plate (20) to drive the smoke screen plate (20) to rotate about the first side edge (201) thereof; characterized in that the first side edge (201) of the smoke screen plate (20) is provided with a rotating shaft member (21) arranged along the extension direction of the first side edge (201) and fixed to the smoke screen plate (20), the driving mechanism comprises a driving end arranged at the first end (203) of the smoke screen plate (20) and a driven end arranged at the second end (204), the driving end comprises a driving member, a first bracket (26) arranged at the first end (203) of the smoke screen plate (20), and a transmission assembly for transmitting the power of the driving member to the smoke screen plate (20) to drive the smoke screen plate (20) to rotate, the driven end comprises a second bracket (27) arranged at the second end (204) of the smoke screen plate (20), and the two ends of the rotating shaft member (21) are connected to the first bracket (26) and the second bracket (27) respectively, so as to transmit the power of the first bracket (26) rotating with the smoke screen plate (20) to the second bracket (27), and make the first end (203) and the second end (204) of the smoke screen plate (20) act synchronously.

2. The smoke screen panel movement mechanism according to claim 1, characterized in that: The rotating shaft member (21) comprises a connecting plate (211) extending along the length direction of the smoke screen plate (20) and used to connect to the wall surface of the smoke screen plate (20), and a shaft portion (212) arranged at the side edge of the connecting plate (211), the shaft portion (212) is arranged adjacent to the first side edge (201) of the smoke screen plate (20), the two ends of the shaft portion (212) in the length direction are respectively provided with a first shaft hole (2121) and a second shaft hole (2122), the first shaft hole (2121) is inserted with a first pin shaft (23) capable of rotating with the rotating shaft member (21), the second shaft hole (2122) is inserted with a second pin shaft (24) capable of rotating with the rotating shaft member (21), the first bracket (26) is provided with a first opening (261) through which the first pin shaft (23) passes and through which the torque can be transmitted in the circumferential direction, and the second bracket (27) is provided with a second opening (271) through which the second pin shaft (24) passes and through which the torque can be transmitted in the circumferential direction.

3. A smoke screen panel movement mechanism according to claim 2, characterised in that: The first opening (261) is a non-circular hole, the first pin shaft (23) comprises a first driving section (231) and a first connecting section (232) connected in sequence along the axial direction thereof, and the cross section of the first driving section (231) is configured as a non-circular structure to match the first opening (261); The second opening (271) is a non-circular hole, the second pin shaft (24) comprises a second driving section (241) and a second connecting section (242) connected in sequence along the axial direction thereof, and the cross section of the second driving section (241) is configured as a non-circular structure to match the second opening (271).

4. The smoke screen panel movement mechanism of claim 3, wherein: The first connecting section (232) is circular in cross section and has a radial dimension greater than that of the first driving section (231), thereby forming a first limiting step (230) at the joint position of the two sections, and a first limiting sleeve (251) is further sleeved on the first driving section (231) and abuts against the first support (26) and the first limiting step (230); The second connecting section (242) is circular in cross section and has a radial dimension greater than that of the second driving section (241), thereby forming a second limiting step (240) at the joint position of the two sections, and a second limiting sleeve (252) is further sleeved on the second driving section (241) and abuts against the second support (27) and the second limiting step (240).

5. The smoke screen panel movement mechanism of claim 3, wherein: First and second fixing seats (31, 32) are further arranged adjacent to the first and second ends (203, 204) of the smoke baffle (20) respectively and are used for fixing with an external installation body, the first pin shaft (23) is arranged on the first fixing seat (31) through the first connecting section (232) thereof, and the second pin shaft (24) is arranged on the second fixing seat (32) through the second connecting section (242) thereof.

6. The smoke screen panel movement mechanism of claim 5, wherein: The first fixing seat (31) is provided with a first rotating shaft hole (310) for rotationally constraining the first connecting section (232) of the first pin shaft (23) therein, and the second fixing seat (32) is provided with a second rotating shaft hole (320) for rotationally constraining the second connecting section (242) of the second pin shaft (24) therein.

7. The smoke screen panel movement mechanism of claim 5, wherein: The driving member comprises a driving motor (41) arranged on the first fixing seat (31), and the transmission assembly comprises a rocker (42) and a connecting rod (43), the first end of the rocker (42) is connected with the output shaft of the driving motor (41) and can rotate around the first end under the driving of the driving motor (41), the second end of the rocker (42) is rotationally connected with the first end of the connecting rod (43), and the second end of the connecting rod (43) is connected with the smoke baffle (20).

8. A smoke screen panel movement mechanism according to claim 7, characterised in that: The first and second supports (26, 27) are arranged on the back surface of the smoke baffle (20), and the second end of the connecting rod (43) is rotationally connected with the first support (26).

9. The smoke screen curtain movement mechanism of claim 2, wherein: The connecting plate (211) of the rotating shaft member (21) is attached to the back surface of the smoke baffle (20).

10. A smoke screen panel movement mechanism according to claim 9, characterised in that: The first and second supports (26, 27) are arranged on the back surface of the smoke baffle (20) and extend in the width direction of the smoke baffle (20), and a reinforcing plate (28) extending in the length direction of the smoke baffle (20) is further attached to the back surface of the smoke baffle (20) adjacent to the second side edge (202), and the first support (26), the reinforcing plate (28), the second support (27), and the connecting plate (211) of the rotating shaft member (21) are sequentially connected in a "mouth" type structure.

11. A range hood comprising a housing (10) and a smoke baffle (20), a front side of the housing (10) being provided with an air inlet (120), characterized in that: The smoke baffle (20) is rotatably connected at the air inlet (120) of the cabinet (10) by the smoke baffle movement mechanism according to any one of claims 1-10.

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