A control method of a smoke screen driving mechanism and a smoke screen driving mechanism

Abstract

The present disclosure relates to a smoke screen driving mechanism control method and a smoke screen driving mechanism, the method is applied to the smoke screen driving mechanism, the smoke screen driving mechanism comprises a screw nut and a driving rod, the outer periphery of the screw nut is provided with a first magnet structure, one end of the driving rod connected with the screw nut is provided with a second magnet structure, the screw nut and the driving rod are magnetically connected, and the driving rod is used for driving the movement of the smoke screen, the method comprises the following steps: in the case that the driving rod drives the smoke screen to close, a target magnetic force is obtained, the target magnetic force is the magnetic force between the first magnet structure and the second magnet structure; the target magnetic force is compared with a preset magnetic force to obtain a comparison result, the preset magnetic force represents the resistance when the closing of the smoke screen is blocked; and the movement of the screw nut and the driving rod is controlled according to the comparison result. The present disclosure can detect whether the magnetic force between the first magnet structure of the screw nut and the second magnet structure of the driving rod is greater than the preset magnetic force, and then control the movement of the driving mechanism.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a control method and a smoke baffle driving mechanism. Background Technology

[0002] The opening angle of the baffle plate on a range hood is usually adjustable to open or close. To prevent fingers from being pinched during the closing process, infrared sensors are typically used to detect if any foreign objects are trapped, or changes in the drive current of the motor that moves the push rod are monitored. However, infrared sensors are less resistant to grease and require a relatively clean environment for both the transmitter and receiver. The kitchen's fume extraction area is the most contaminated area, which can easily affect the transmission and reception of infrared signals. Furthermore, monitoring changes in the drive motor's current can lead to significant fluctuations in the current after prolonged operation, potentially causing false alarms. Summary of the Invention

[0003] To address at least one of the aforementioned technical problems, this disclosure provides a control method for a smoke baffle drive mechanism and a smoke baffle drive mechanism.

[0004] On one hand, this disclosure provides a control method for a smoke baffle driving mechanism, applied to a smoke baffle driving mechanism. The smoke baffle driving mechanism includes a lead screw nut and a driving rod. A first magnet structure is provided on the outer periphery of the lead screw nut, and a second magnet structure is provided at the end of the driving rod that connects to the lead screw nut. The lead screw nut and the driving rod are magnetically connected. The driving rod is used to drive the smoke baffle to move. The method includes:

[0005] When the smoke baffle is closed by the drive rod, the target magnetic force is obtained. The target magnetic force is the magnetic force between the first magnet structure and the second magnet structure.

[0006] The target magnetic force is compared with the preset magnetic force to obtain the comparison results. The preset magnetic force represents the resistance of the smoke baffle when it is blocked from closing.

[0007] Based on the comparison results, control the movement of the lead screw nut and drive rod.

[0008] In an optional embodiment, controlling the movement of the lead screw nut and the drive rod based on the comparison results includes:

[0009] If the comparison result indicates that the target magnetic force is greater than the preset magnetic force, control the lead screw nut to move away from the drive rod, and control the drive rod to stop moving;

[0010] If the comparison results indicate that the target magnetic force is not greater than the preset magnetic force, the control drive rod moves with the lead screw nut.

[0011] Secondly, the present invention also provides a smoke baffle driving mechanism, comprising: a lead screw nut, a drive rod, a sleeve, a base, and a motor;

[0012] The base is fixed to the side wall of the range hood, and the side wall of the range hood is positioned opposite to the smoke baffle.

[0013] The sleeve is fixedly connected to the base, the lead screw nut is set inside the sleeve, and the lead screw nut is provided with a first magnet structure on its outer periphery;

[0014] One end of the drive rod is fitted inside the sleeve and connected to the lead screw nut. The end of the drive rod connected to the lead screw nut is provided with a second magnet structure. The lead screw nut and the drive rod are magnetically connected. The other end of the drive rod extends out of the sleeve and is fixedly connected to the smoke baffle.

[0015] The motor is fixedly connected to the base and is used to drive the lead screw nut and drive rod.

[0016] In an optional embodiment, the first magnet structure includes at least one lead screw nut magnet, and the outer periphery of the lead screw nut is provided with a first groove corresponding to the number of lead screw nut magnets, the first groove being used to accommodate at least one lead screw nut magnet;

[0017] The second magnet structure includes at least one drive rod magnet. The outer periphery of the end of the drive rod that is connected to the lead screw nut is provided with a second groove corresponding to the number of drive rod magnets. The second groove is used to accommodate at least one drive rod magnet.

[0018] The N pole of the lead screw nut magnet is set to correspond to the S pole of the drive rod magnet.

[0019] In an optional embodiment, the smoke baffle drive mechanism further includes: a lead screw and a worm gear;

[0020] One end of the lead screw is movably connected inside the base, and the other end of the lead screw is sleeved inside the drive rod. The lead screw nut is sleeved on the lead screw.

[0021] The worm gear is a movable connection between the motor and one end of the lead screw. The worm gear is used to drive the lead screw to rotate around the central axis of the lead screw under the drive of the motor.

[0022] In an optional embodiment, the outer wall of the lead screw is provided with a rotary thread, and the inner wall of the lead screw nut is provided with a thread that matches the rotary thread;

[0023] The outer wall of the lead screw nut is also provided with a groove, which engages with the inner wall of the sleeve.

[0024] In an optional embodiment, the smoke baffle driving mechanism further includes: a magnetic sleeve;

[0025] The magnet sleeve is fitted around the outer periphery of the second magnet structure, and the outer wall of the magnet sleeve is connected to the inner wall of the sleeve.

[0026] In an optional embodiment, the inner wall of the smoke baffle is provided with a bracket for fixing one end of the drive rod extending out of the sleeve and the inner wall of the smoke baffle.

[0027] Thirdly, the present invention also provides an electronic device, comprising:

[0028] processor;

[0029] Memory used to store processor-executable instructions;

[0030] The processor is used to execute instructions to implement the above-mentioned control method for the smoke baffle drive mechanism.

[0031] Fourthly, the present invention also provides a storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to execute the above-described smoke baffle drive mechanism control method.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0033] Implementing this disclosure will have the following beneficial effects:

[0034] When the smoke baffle is closed by the drive rod, the target magnetic force is obtained. The target magnetic force is the magnetic force between the first magnet structure and the second magnet structure. The target magnetic force is compared with the preset magnetic force to obtain the comparison result. The preset magnetic force represents the resistance when the smoke baffle is blocked from closing. Based on the comparison result, the movement of the lead screw nut and the drive rod is controlled.

[0035] In this application, if the smoke baffle is obstructed from closing, the magnetic force between the first and second magnet structures will change. By obtaining the magnetic force between the first and second magnet structures when the smoke baffle is closed by the drive rod, and comparing the target magnetic force with the preset magnetic force, the magnitude of the force between the lead screw nut and the drive rod can be monitored in real time. By controlling the movement of the lead screw nut and the drive rod according to the comparison result, the movement of the lead screw nut and the drive rod can be controlled in time when the smoke baffle is obstructed from closing, thus preventing the smoke baffle from pinching the hand.

[0036] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions and advantages in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings included herein are incorporated in and constitute a part of this specification, illustrating embodiments consistent with this disclosure, and are used together with the description to explain the principles of this disclosure, and do not constitute an improper limitation of this disclosure.

[0038] Figure 1 This is a schematic diagram of an implementation environment according to an exemplary embodiment;

[0039] Figure 2 This is a flowchart illustrating a control method for a smoke baffle drive mechanism according to an exemplary embodiment;

[0040] Figure 3 This is a schematic diagram illustrating a control method for a smoke baffle drive mechanism according to an exemplary embodiment;

[0041] Figure 4 This is a block diagram of a smoke baffle drive mechanism control device according to an exemplary embodiment;

[0042] Figure 5 This is a schematic diagram of a smoke baffle driving mechanism according to an exemplary embodiment;

[0043] Figure 6 This is a schematic diagram of a lead screw nut and its exploded structure according to an exemplary embodiment;

[0044] Figure 7 This is a schematic diagram of a drive lever according to an exemplary embodiment;

[0045] Figure 8 This is a schematic diagram of an explosion structure of a drive rod according to an exemplary embodiment;

[0046] Figure 9 This is a schematic diagram illustrating an assembly of a lead screw nut and a drive rod according to an exemplary embodiment;

[0047] Figure 10 This is a schematic diagram of an exploded structure of a lead screw nut and a drive rod according to an exemplary embodiment;

[0048] Figure 11 This is a schematic diagram of a magnetic sleeve according to an exemplary embodiment;

[0049] Figure 12 This is a schematic cross-sectional view of a smoke baffle drive mechanism according to an exemplary embodiment;

[0050] Figure 13 This is an assembly schematic diagram of a smoke baffle drive mechanism according to an exemplary embodiment;

[0051] Figure 14 This is a block diagram illustrating an electronic device for controlling a smoke baffle drive mechanism according to an exemplary embodiment;

[0052] The following is supplementary explanation of the attached figures:

[0053] 1-Screw nut; 101-First magnet structure; 102-First groove; 103-Slot; 2-Drive rod; 201-Second magnet structure; 202-Second groove; 3-Sleeve; 4-Base; 5-Motor; 6-Screw; 7-Worm gear; 8-Magnetic sleeve; a-Smoke baffle; b-Smoke baffle drive mechanism; c-Range hood housing. Detailed Implementation

[0054] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0055] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0056] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise. The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0057] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0058] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0059] In related technologies, the detection of whether foreign objects are trapped when the smoke baffle closes is generally achieved by adding an infrared sensor, or by monitoring changes in the drive current of the motor that moves the push rod. However, infrared sensors are relatively weak against oil contamination, and the signal transmitter and receiver require a relatively clean environment. The kitchen fume extraction area is the most polluted area, which can easily affect the transmission and reception of infrared signals. Furthermore, the method of detecting foreign objects by monitoring changes in the drive motor current can lead to misjudgments after prolonged operation, as the drive current changes significantly.

[0060] To improve the efficiency of foreign object identification during the closing process of the smoke baffle and reduce the occurrence of hand pinching, this disclosure provides a control method for the smoke baffle driving mechanism.

[0061] Please see Figure 1 , Figure 1 This is a schematic diagram illustrating an application environment according to an exemplary embodiment, such as... Figure 1 As shown, the application environment may include controller 01 and terminal 02.

[0062] In an optional embodiment, the controller 01 can be used for computational processing in the smoke baffle drive mechanism control method. Specifically, the controller 01 can be a control board or a microcontroller installed on the inner wall of the smoke baffle.

[0063] In an optional embodiment, terminal 02 can perform calculations in conjunction with the smoke baffle drive mechanism control method of controller 01, such as acquiring the target magnetic force. Specifically, terminal 02 may include, but is not limited to, a motor, a micro magnetic force detection device, or a micro magnetic force detection module.

[0064] For example, when the smoke baffle is closed by the drive rod, the terminal 02 acquires the target magnetic force and transmits it to the controller 01. The target magnetic force is the magnetic force between the first magnet structure and the second magnet structure. The controller 01 compares the target magnetic force with the preset magnetic force to obtain the comparison result. The preset magnetic force represents the resistance when the smoke baffle is blocked from closing. Based on the comparison result, the controller controls the movement of the lead screw nut and the drive rod. Finally, the control command or control result is transmitted to the terminal 02.

[0065] In addition, it should be noted that, Figure 1 The example shown is merely one application environment provided by this disclosure. In practical applications, other application environments may also be included.

[0066] In the embodiments described in this specification, the controller 01 and the terminal 02 can be directly or indirectly connected via wired or wireless communication, and this disclosure does not impose any restrictions.

[0067] The above-mentioned control method for the smoke baffle driving mechanism is applied to the smoke baffle driving mechanism, which includes a lead screw nut 1 and a driving rod 2. The lead screw nut 1 has a first magnet structure on its outer periphery, and the end of the driving rod 2 connected to the lead screw nut 1 has a second magnet structure. The lead screw nut 1 and the driving rod 2 are magnetically connected, and the driving rod 2 is used to drive the smoke baffle to move. The above method includes:

[0068] Step S201: When the smoke baffle is closed by the drive rod 2, the target magnetic force is obtained. The target magnetic force is the magnetic force between the first magnet structure and the second magnet structure.

[0069] In this embodiment of the disclosure, the magnetic force between the first magnet structure and the second magnet structure can be the attractive force between the N pole of each magnet in the first magnet structure and the S pole of each magnet in the corresponding second magnet structure, and the attractive force between the S pole of each magnet in the first magnet structure and the N pole of each magnet in the corresponding second magnet structure. Optionally, the target magnetic force can be obtained by measuring the target magnetic force through a magnetic induction module.

[0070] Step S202: Compare the target magnetic force with the preset magnetic force to obtain the comparison result. The preset magnetic force represents the resistance when the smoke baffle is blocked from closing.

[0071] In this embodiment of the disclosure, comparing the target magnetic force with the preset magnetic force can be done by comparing the magnitude of the target magnetic force value with the magnitude of the preset magnetic force value, and the comparison result reflects the relationship between the magnitude of the target magnetic force value and the preset magnetic force value. Optionally, the preset magnetic force represents the tolerance of the smoke baffle when it is obstructed from closing, such as the maximum adaptive force that a user's hand can withstand when it is trapped by the smoke baffle.

[0072] Step S203: Based on the comparison results, control the movement of the lead screw nut 1 and the drive rod 2.

[0073] In an optional embodiment, controlling the movement of the lead screw nut 1 and the drive rod 2 based on the comparison results includes:

[0074] Step S2031: If the comparison result indicates that the target magnetic force is greater than the preset magnetic force, control the lead screw nut 1 to move away from the drive rod 2, and control the drive rod 2 to stop moving.

[0075] In this embodiment, the drive rod 2 moves along with the lead screw nut 1 under magnetic force. When a foreign object is caught in the smoke baffle, such as when a user's hand is caught in the smoke baffle, the drive rod 2's movement into the smoke baffle is obstructed. To overcome this resistance, the drive rod 2 continues to move along with the lead screw nut 1, increasing the target magnetic force. Therefore, if the comparison result indicates that the target magnetic force is greater than the preset magnetic force, it means that a foreign object is caught in the smoke baffle. To prevent the foreign object from being trapped, the lead screw nut 1 is controlled to continue moving away from the drive rod 2. This prevents the motor driving the lead screw nut 1 from stalling due to a sudden stop, and the drive rod 2 is controlled to overcome the traction of the target magnetic force to stop moving. Optionally, the way to control the drive rod 2 to overcome the target magnetic force and stop moving can be by providing a reverse support force to overcome the target magnetic force, or by setting a stopping mechanism to engage the drive rod 2 to overcome the target magnetic force.

[0076] Step S2032: If the comparison result indicates that the target magnetic force is not greater than the preset magnetic force, control the drive rod 2 to move with the lead screw nut 1.

[0077] In this embodiment of the disclosure, if the comparison result indicates that the target magnetic force is not greater than the preset magnetic force, it means that there is no foreign object obstructing the closing of the smoke baffle during the current closing process. Therefore, the drive rod 2 is controlled to move with the lead screw nut 1 to complete the closing of the smoke baffle.

[0078] Based on the above, this embodiment of the present disclosure, by controlling the lead screw nut 1 to move away from the drive rod 2 when the comparison result indicates that the target magnetic force is greater than the preset magnetic force, and controlling the drive rod 2 to stop moving, can prevent foreign objects or the user's hand from being pinched by the smoke baffle, and prevent the motor of the drive lead screw nut 1 from stalling, thereby improving the safety of the smoke baffle; by controlling the drive rod 2 to move with the lead screw nut 1 when the comparison result indicates that the target magnetic force is not greater than the preset magnetic force, the smoke baffle can continue to close without obstruction from foreign objects.

[0079] In one specific embodiment, a schematic diagram of the above-described smoke baffle drive mechanism control method is shown below. Figure 3 As shown:

[0080] Both the lead screw nut and the magnets on the drive rod are neodymium magnets. The magnetic force F1 between the lead screw nut and the drive rod can be designed according to actual needs, and its magnitude can be changed by altering the area or volume of the magnets. Assuming the average user's tolerance to being pinched is F2, it is necessary to ensure that F1 < F2 throughout operation. If this design value is exceeded, the lead screw nut assembly will overcome the magnetic force of the neodymium magnets and continue rotating and retracting, while the drive rod will stop moving. This prevents the user's hand from being pinched and also prevents the motor from overheating due to stalling.

[0081] Figure 4 This is a block diagram of a smoke baffle drive mechanism control device according to an exemplary embodiment, with reference to... Figure 4 The device includes an acquisition module 401, a comparison module 402, and a control module 403, wherein...

[0082] The acquisition module 401 is used to acquire the target magnetic force when the drive rod 2 drives the smoke baffle to close. The target magnetic force is the magnetic force between the first magnet structure and the second magnet structure.

[0083] The comparison module 402 is used to compare the target magnetic force with the preset magnetic force to obtain the comparison result. The preset magnetic force represents the resistance when the smoke baffle is blocked from closing.

[0084] The control module 403 is used to control the movement of the lead screw nut 1 and the drive rod 2 based on the comparison results.

[0085] In an optional embodiment, the control module 403 includes:

[0086] The first sub-control module is used to control the lead screw nut 1 to move away from the drive rod 2 and control the drive rod 2 to stop moving when the comparison result indicates that the target magnetic force is greater than the preset magnetic force.

[0087] The second sub-control module is used to control the drive rod 2 to move with the lead screw nut 1 when the comparison result indicates that the target magnetic force is not greater than the preset magnetic force.

[0088] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0089] Figure 5 This is a schematic diagram of a smoke baffle driving mechanism according to an exemplary embodiment, such as... Figure 5 As shown, the present invention also provides a smoke baffle driving mechanism, including: a lead screw nut 1, a drive rod 2, a sleeve 3, a base 4, and a motor 5.

[0090] The base 4 is fixed to the side wall of the range hood, and the side wall of the range hood is set opposite to the smoke baffle.

[0091] In this embodiment of the disclosure, the base 4 can be fixed to the side wall of the range hood by using screws.

[0092] The sleeve 3 is fixedly connected to the base 4, the lead screw nut 1 is set inside the sleeve 3, and the lead screw nut 1 is provided with a first magnet structure 101 on its outer periphery.

[0093] In this embodiment, the bottom of the sleeve 3 is fixedly connected to the base 4. The sleeve 3 has a hollow structure with an opening at the top. The lead screw nut 1 is disposed inside the sleeve 3, and part of the outer wall of the lead screw nut 1 is in contact with the inner wall of the sleeve 3. Figure 6 As shown, a first magnet structure 101 is provided around the outer circumference of the lead screw nut 1.

[0094] One end of the drive rod 2 is fitted inside the sleeve 3 and connected to the lead screw nut 1. The end of the drive rod 2 connected to the lead screw nut 1 is provided with a second magnet structure 201. The lead screw nut 1 and the drive rod 2 are magnetically connected. The other end of the drive rod 2 extends out of the sleeve 3 and is fixedly connected to the smoke baffle.

[0095] In this embodiment, the drive rod 2 is a long rod structure. One end of the drive rod 2 is sleeved in the sleeve 3 and connected to the outer periphery of the first magnet structure 101 on the lead screw nut 1. The other end extends out of the sleeve 3 and is fixedly connected to the smoke baffle. The end of the drive rod 2 connected to the lead screw nut 1 is provided with a second magnet structure 201, which is located around the outer periphery of the drive rod 2.

[0096] The motor 5 is fixedly connected to the base 4, and the motor 5 is used to drive the lead screw nut 1 and the drive rod 2 to move.

[0097] In this embodiment, the motor 5 is fixedly disposed on the side of the base 4, and the motor 5 is used to drive the movement of one end of the lead screw nut 1 and the drive rod 2 within the sleeve 3.

[0098] As can be seen from the above, the present embodiment enables the lead screw nut 1 and the drive rod 2 to be movably connected by the arrangement of the first magnet structure and the second magnet structure, and enables the drive rod 2 to move with the movement of the lead screw nut 1 by the magnetic force between the first magnet structure and the second magnet structure.

[0099] In an optional embodiment, such as Figure 6 As shown, the first magnet structure 101 includes at least one lead screw nut magnet. The outer periphery of the lead screw nut 1 is provided with a first groove 102 corresponding to the number of lead screw nut magnets. The first groove 102 is used to accommodate at least one lead screw nut magnet.

[0100] In this embodiment of the disclosure, the first magnet structure 101 includes multiple lead screw nut magnets, which are vertically arranged around the outer periphery of the lead screw nut 1. The N pole and S pole of two adjacent magnets are arranged oppositely in the vertical direction. For example, if the N pole of a certain magnet faces upward and the S pole faces downward, then the S pole of the adjacent magnet faces upward and the N pole faces downward. The outer periphery of the lead screw nut 1 is also provided with a first groove 102 for accommodating the lead screw nut magnets. The number of first grooves 102 corresponds to the number of lead screw nut magnets, and the shape of the first groove 102 matches the outer contour of the lead screw nut magnets.

[0101] like Figure 7 and Figure 8 As shown, the second magnet structure 201 includes at least one drive rod magnet. The outer periphery of the end of the drive rod 2 that is connected to the lead screw nut 1 is provided with a second groove 202 corresponding to the number of drive rod magnets. The second groove 202 is used to accommodate at least one drive rod magnet.

[0102] In this embodiment, the second magnet structure 201 includes multiple drive rod magnets, the number of which corresponds to the number of magnets in the first magnet structure 101. The multiple drive rod magnets are vertically arranged around the outer circumference of the end where the drive rod 2 connects to the lead screw nut 1. The N pole and S pole of adjacent magnets are arranged oppositely in the vertical direction. For example, if the N pole of a magnet faces upward and the S pole faces downward, then the S pole of the adjacent magnet faces upward and the N pole faces downward. The outer circumference of the end where the drive rod 2 connects to the lead screw nut 1 is also provided with a second groove 202 for accommodating the drive rod magnets. The number of second grooves 202 corresponds to the number of drive rod magnets, and the shape of the second groove 202 matches the outer contour of the drive rod magnet.

[0103] like Figure 9 and Figure 10 As shown, the N pole of the lead screw nut magnet is set to correspond to the S pole of the drive rod magnet.

[0104] In this embodiment of the disclosure, the N pole and S pole of the corresponding lead screw nut magnet and drive rod magnet are arranged oppositely in the vertical direction. For example, if the N pole of a lead screw nut magnet faces upward and the S pole faces downward, then the corresponding drive rod magnet has the S pole facing upward and the N pole facing downward.

[0105] Based on the above, the present invention can increase the magnetic force between the lead screw nut 1 and the drive rod 2 by setting the first magnet structure 101 and the second magnet structure 201 to include multiple magnets; by setting the first groove 102 and the second groove 202 to accommodate the magnets, the outer surfaces of the lead screw nut 1 and the drive rod 2 can be made smoother.

[0106] In an optional embodiment, such as Figure 1 As shown, the smoke baffle drive mechanism also includes: lead screw 6 and worm gear 7.

[0107] One end of the lead screw 6 is movably connected inside the base 4, and the other end of the lead screw 6 is sleeved inside the drive rod 2. The lead screw nut 1 is sleeved on the lead screw 6.

[0108] In this embodiment, the lead screw 6 is a solid long rod structure. One end of the lead screw 6 is movably connected to the base 4, and the other end of the lead screw 6 is sleeved in the hollow structure of the drive rod 2. The lead screw nut 1 is a hollow structure and is sleeved on the lead screw 6 through the hollow structure.

[0109] The worm gear 7 is movably connected to one end of the motor 5 and the lead screw 6. The worm gear 7 is used to drive the lead screw 6 to rotate around the central axis of the lead screw 6 under the drive of the motor 5.

[0110] In this embodiment, the worm gear 7 is movably connected to one end of the motor 5 and the lead screw 6, which is movably connected to the base 4. The worm gear 7 can drive the lead screw 6 to rotate around the central axis of the lead screw 6 under the drive of the motor 5, that is, rotate around the central axis of the lead screw 6 as the center line of rotation.

[0111] In an optional embodiment, such as Figure 6 As shown, the outer wall of the lead screw 6 is provided with a rotating thread, and the inner wall of the lead screw nut 1 is provided with a thread that matches the rotating thread.

[0112] In this embodiment, the outer wall of the lead screw 6 is provided with a rotating thread, and the inner wall of the lead screw nut 1 is provided with a thread that matches the rotating thread. The lead screw nut 1 is engaged with the outer wall of the lead screw 6 through the thread on its inner wall.

[0113] The outer wall of the lead screw nut 1 is also provided with a groove 103, which engages with the inner wall of the sleeve 3.

[0114] In this embodiment, the outer wall of the lead screw nut 1 is also provided with a groove 103 in the shape of a gear. The groove 103 is located below the first groove 102 and is engaged with the inner wall of the sleeve 3.

[0115] Based on the above, the present invention can achieve the engagement of the lead screw nut 1 and the lead screw 6 by providing a thread on the inner wall of the lead screw nut 1 that matches the rotating thread; and can achieve the engagement of the lead screw nut 1 and the inner wall of the sleeve 3 by providing a groove 103 on the outer wall of the lead screw nut 1, thereby enabling the lead screw nut 1 to move up and down with the rotation of the lead screw 6.

[0116] In an optional embodiment, such as Figure 11 As shown, the smoke baffle driving mechanism also includes a magnetic sleeve 8; the magnetic sleeve 8 is sleeved on the outer periphery of the second magnet structure 201, and the outer wall of the magnetic sleeve 8 is connected to the inner wall of the sleeve 3.

[0117] In this embodiment, the magnet sleeve 8 is sleeved around the second magnet structure 201 to prevent the magnet from shifting due to the repulsive force of the magnet during operation. In addition, the setting of the magnet sleeve 8 also makes the diameter of the end of the drive rod 2 with the second magnet structure 201 larger than the other end of the drive rod 2, which can prevent the drive rod 2 from being pushed out of the sleeve 3.

[0118] like Figure 12 As shown, at the relative positions of the first magnet structure 101 and the second magnet structure 201, the smoke baffle driving mechanism consists of, from the outside to the inside, a sleeve 3, a magnet sleeve 8, the second magnet structure 201 of the drive rod 2, the first magnet structure 101 of the lead screw nut 1, the body of the lead screw nut 1, and the lead screw 6. The slot 103 of the lead screw nut 1 is located below the magnet sleeve 8, the second magnet structure 201 of the drive rod 2, and the first magnet structure 101 of the lead screw nut 1, and is directly engaged with the inner wall of the sleeve 3.

[0119] like Figure 13 As shown, the base of the smoke baffle drive mechanism b is fixedly connected to the rear side wall of the range hood housing c. The front side wall of the range hood housing c is provided with a through hole, which is used to pass through the drive rod of the smoke baffle drive mechanism b, so that the drive rod of the smoke baffle drive mechanism b can be fixedly connected to the smoke baffle a on the outer side of the front side wall. By moving the drive rod, the smoke baffle a can be opened and closed.

[0120] In an optional embodiment, the inner wall of the smoke baffle is provided with a bracket for fixing one end of the drive rod 2 extending out of the sleeve 3 and the inner wall of the smoke baffle.

[0121] In this embodiment, the bracket on the inner wall of the smoke baffle is welded to or fixed to the inner wall of the smoke baffle by screws. The bracket is used to fix one end of the drive rod 2 extending out of the sleeve 3 and the inner wall of the smoke baffle. During the movement of the smoke baffle, the included angle between the drive rod 2 and the smoke baffle also changes accordingly.

[0122] In an exemplary embodiment, a range hood is also provided, including the aforementioned smoke baffle drive mechanism.

[0123] In an exemplary embodiment, an electronic device is also provided, including: a processor; and a memory for storing processor-executable instructions; wherein the processor is used for the instructions to implement the smoke baffle drive mechanism control method as described in the embodiments of this disclosure.

[0124] Figure 14 This is a block diagram illustrating an electronic device for a smoke baffle drive mechanism control method according to an exemplary embodiment. The electronic device may be a terminal, and its internal structure diagram may be as follows: Figure 14As shown, the electronic device includes a processor, memory, network interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for controlling a smoke baffle drive mechanism. The display screen can be a liquid crystal display (LCD) or an e-ink display. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the device's casing, or an external keyboard, touchpad, or mouse.

[0125] Those skilled in the art will understand that Figure 14 The structure shown is merely a block diagram of a portion of the structure related to the present disclosure and does not constitute a limitation on the electronic device to which the present disclosure is applied. A specific electronic device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0126] In an exemplary embodiment, a storage medium is also provided, which, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform the smoke baffle drive mechanism control method of the present disclosure embodiments.

[0127] In an exemplary embodiment, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute the smoke baffle drive mechanism control method of the present disclosure embodiments.

[0128] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this disclosure can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0129] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0130] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A control method for a smoke baffle drive mechanism, characterized in that, The method is applied to a smoke baffle driving mechanism, which includes a lead screw nut (1) and a driving rod (2). The lead screw nut (1) has a first magnet structure on its outer periphery, and the driving rod (2) has a second magnet structure at one end connected to the lead screw nut (1). The lead screw nut (1) and the driving rod (2) are magnetically connected. The driving rod (2) is used to drive the smoke baffle to move. The method includes: When the drive rod (2) drives the smoke baffle to close, the target magnetic force is obtained, and the target magnetic force is the magnetic force between the first magnet structure and the second magnet structure; The target magnetic force is compared with the preset magnetic force to obtain the comparison result. The preset magnetic force represents the resistance of the smoke baffle when it is blocked from closing. Based on the comparison results, control the movement of the lead screw nut (1) and the drive rod (2); The step of controlling the movement of the lead screw nut (1) and the drive rod (2) based on the comparison result includes: If the comparison result indicates that the target magnetic force is greater than the preset magnetic force, control the lead screw nut (1) to move away from the drive rod (2), and control the drive rod (2) to stop moving; If the comparison result indicates that the target magnetic force is not greater than the preset magnetic force, the drive rod (2) is controlled to move with the lead screw nut (1).

2. A smoke baffle driving mechanism, characterized in that, The smoke baffle drive mechanism includes: a lead screw nut (1), a drive rod (2), a sleeve (3), a base (4), and a motor (5); The base (4) is fixed to the side wall of the range hood, and the side wall of the range hood is arranged opposite to the smoke baffle. The sleeve (3) is fixedly connected to the base (4), the lead screw nut (1) is disposed inside the sleeve (3), and the lead screw nut (1) is provided with a first magnet structure (101) on its outer periphery. One end of the drive rod (2) is sleeved inside the sleeve (3) and connected to the lead screw nut (1). The end of the drive rod (2) connected to the lead screw nut (1) is provided with a second magnet structure (201). The lead screw nut (1) and the drive rod (2) are magnetically connected. The other end of the drive rod (2) extends out of the sleeve (3) and is fixedly connected to the smoke baffle. The motor (5) is fixedly connected to the base (4), and the motor (5) is used to drive the lead screw nut (1) and the drive rod (2) to move.

3. The smoke baffle driving mechanism according to claim 2, characterized in that: The first magnet structure (101) includes at least one lead screw nut magnet. The lead screw nut (1) has a first groove (102) on its outer periphery corresponding to the number of lead screw nut magnets. The first groove (102) is used to accommodate the at least one lead screw nut magnet. The second magnet structure (201) includes at least one drive rod magnet. The outer periphery of the end of the drive rod (2) that is connected to the lead screw nut (1) is provided with a second groove (202) corresponding to the number of drive rod magnets. The second groove (202) is used to accommodate the at least one drive rod magnet. The N pole of the lead screw nut magnet is set to correspond to the S pole of the drive rod magnet.

4. The smoke baffle driving mechanism according to claim 2, characterized in that, The smoke baffle drive mechanism also includes: a lead screw (6) and a worm gear (7). One end of the lead screw (6) is movably connected to the base (4), the other end of the lead screw (6) is sleeved in the drive rod (2), and the lead screw nut (1) is sleeved on the lead screw (6); The worm gear (7) is movably connected to one end of the motor (5) and the lead screw (6). The worm gear (7) is used to drive the lead screw (6) to rotate around the central axis of the lead screw (6) under the drive of the motor (5).

5. The smoke baffle driving mechanism according to claim 4, characterized in that: The outer wall of the lead screw (6) is provided with a rotating thread, and the inner wall of the lead screw nut (1) is provided with a thread that matches the rotating thread; The outer wall of the lead screw nut (1) is also provided with a groove (103), which is engaged with the inner wall of the sleeve (3).

6. The smoke baffle driving mechanism according to claim 2, characterized in that, The smoke baffle driving mechanism also includes: a magnetic sleeve (8); The magnet sleeve (8) is fitted around the outer periphery of the second magnet structure (201), and the outer wall of the magnet sleeve (8) is connected to the inner wall of the sleeve (3).

7. The smoke baffle driving mechanism according to claim 2, characterized in that: The inner wall of the smoke baffle is provided with a bracket, which is used to fix the end of the drive rod (2) extending out of the sleeve (3) and the inner wall of the smoke baffle.

8. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is used to provide the instructions to implement the smoke baffle drive mechanism control method as described in claim 1.

9. A storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is able to perform the smoke baffle drive mechanism control method as described in claim 1.

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