Knob, stove and smoke stove linkage system

Abstract

The application discloses a knob, a stove and a stove and smoke linkage system. The knob comprises a stator and a rotor. The driving part of the rotor and the driven part of the stator are gap matched in the rotation direction of the rotor driving the stator, so that the rotor drives the stator to rotate after rotating by a preset angle. The knob further comprises a reset member. One end of the reset member is fixed to one of the rotor and the stator. The other end of the reset member abuts against the other one of the rotor and the stator. The other end of the reset member is used to be compressed or stretched when the rotor rotates relative to the stator, so as to generate an acting force opposite to the rotation direction. The knob, the stove and the stove and smoke linkage system can avoid the mis-triggering of the stator rotation to cause the firepower change of the stove and avoid the waste of energy. The algorithm difficulty of converting the rotation angle of the knob into the firepower size is simplified. The size of the adjusted firepower is directly reflected. The error is avoided. The firepower adjustment control of the stove is easier and more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a knob, a cooking appliance and a hob-oven linkage system. BACKGROUND

[0002] With the improvement of people's living standards, gas stoves are more and more widely used. When the gas stove and other cooking appliances are used, the rotation angle of the knob needs to be calculated to adjust the fire size of the cooking appliance accordingly. However, the existing algorithm for calculating the rotation angle of the knob is complex, and it is difficult to make the calculated rotation angle directly reflect the change of the fire size, so it is easy to produce errors and waste energy. At the same time, when the knob is slightly rotated without driving the stator to rotate, it is easy to be triggered to cause the stator to rotate, and the fire size changes, thereby wasting energy and reducing the control accuracy of the angle adjustment. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the above-mentioned defects in the prior art, and to provide a knob, a cooking appliance and a hob-oven linkage system.

[0004] The present application solves the above technical problems by the following technical solutions:

[0005] A knob for a cooking appliance, the knob comprising a stator and a rotor, a driving part of the rotor and a driven part of the stator are gap-fitted in a rotation direction of the rotor driving the stator, so that the rotor drives the stator to rotate after rotating by a preset angle;

[0006] An angle detection sensor is arranged on the rotor, and the angle detection sensor is used to rotate with the rotor and detect the rotation angle of the rotor;

[0007] The knob further comprises a reset member, one end of the reset member is fixed to one of the rotor and the stator, the other end of the reset member abuts against the other one of the rotor and the stator, and the other end of the reset member is used to be compressed or stretched when the rotor rotates relative to the stator, so as to generate an acting force opposite to the rotation direction.

[0008] In the present scheme, the clearance fit relationship between the driving part and the driven part makes the rotor and the stator produce relative rotation movement before the driving part rotates to the driven part, and the rotor and the stator can keep synchronous rotation movement when the driving part rotates to contact with the driven part. Thus, the rotation of the stator has a confirmation process (if the relative rotation movement stops, the stator will not be driven to produce synchronous rotation movement; if the relative rotation movement continues, the stator will be driven to produce synchronous rotation movement, i.e. the confirmation of the synchronous rotation movement of the stator), avoiding the mis-triggering of the stator rotation to produce the change of the firepower of the stove, and avoiding the waste of energy. Through the reset member with the above structure, when the rotor and the stator produce relative rotation movement, the reset member can produce a reset force, and when the synchronous rotation continues, the reset force is released, producing a reset, so as to eliminate the rotation angle formed in the relative rotation stage, and only keep the angle in the synchronous rotation stage. Therefore, in the whole rotation process, the algorithm difficulty of converting the rotation angle of the knob into the firepower size is simplified (because the rotation angle of the knob only represents the rotation angle of the stator for adjusting the firepower size), directly representing the adjustment of the firepower size, avoiding errors, making the firepower adjustment control of the stove easier and more accurate.

[0009] Preferably, one of the rotor and the stator is provided with an extension structure, and the other of the rotor and the stator is provided with a slot, at least part of the extension structure is placed in the slot and clearance fit in the rotation direction;

[0010] The driving part is arranged on one of the extension structure and the slot, and the driven part is arranged on the other of the extension structure and the slot.

[0011] In the present scheme, the clearance fit of the extension structure and the slot realizes the clearance fit of the driving part and the driven part, so that the rotor and the stator can produce relative rotation and synchronous rotation.

[0012] Preferably, the reset member includes at least one elastic member, one end of the elastic member is fixed to one of the rotor and the stator, the other end of the elastic member abuts against the other of the rotor and the stator, and the abutting direction of the at least one elastic member is opposite to the rotation direction.

[0013] In the present scheme, the reset member adopts the elastic member, which is easy to install and manufacture; the elastic force is used to realize the reset, which is easy to adjust the reset force.

[0014] Preferably, the reset member includes at least two elastic members, and the other ends of the at least two elastic members respectively abut against one of the rotor and the stator in the rotation direction and the opposite direction of the rotation direction.

[0015] In the present scheme, the elastic members abut in opposite directions (rotation direction and opposite direction of rotation direction), so that the knob can generate a reset function no matter which direction it rotates.

[0016] Preferably, the components in the rotor and the stator for abutting with the elastic members are provided with a protruding structure, and the other end of the elastic member is attached to the protruding structure.

[0017] In the present scheme, the elastic members and the protruding structure achieve abutment in a way of attachment, so that the elasticity is smooth, the impact is reduced, the reset is more stable, and the jumping or vibration caused by impact is avoided, which avoids causing angle calculation error and is beneficial to the calculation accuracy of converting the rotation angle of the knob into firepower size.

[0018] Preferably, the reset member includes at least two elastic members, and the other end of at least two adjacent elastic members is attached to the protruding structure in the rotation direction and the opposite direction of the rotation direction, respectively.

[0019] In the present scheme, at least two adjacent elastic members are attached to the protruding structure in opposite directions (rotation direction and opposite direction of rotation direction), that is, adjacent positions on both sides of the protruding structure are attached in opposite directions, which not only realizes the reset function in opposite directions, but also further improves the stability and reduces the impact.

[0020] Preferably, the protruding structure is sequentially provided with a first part and a second part along the axial direction of the knob, and the first part is close to the elastic member.

[0021] The thickness of the first part in the rotation direction is greater than the thickness of the second part in the rotation direction, and the thickness of the first part in the rotation direction is greater than the spacing between two adjacent elastic members.

[0022] The other end of two adjacent elastic members is attached to the second part in the rotation direction and the opposite direction of the rotation direction, respectively.

[0023] In the present scheme, through the above structure, the first part and the second part form a structure of thick head and thin head, so that when two adjacent elastic members can be elastically clamped into the second part and attached thereto, the upward and downward impact in the axial direction is avoided to make them disengage, thereby affecting the reset effect.

[0024] Preferably, one end of the elastic member is fixed to the rotor, the protruding structure is provided on the stator, and the other end of two adjacent elastic members is attached to the protruding structure in the rotation direction and the opposite direction of the rotation direction, respectively.

[0025] In the scheme, through the above setting, the fixed end of the elastic member is arranged on the rotor generating the rotary drive, and the movable end of the elastic member generating the elastic deformation is arranged on the stator being driven, which is beneficial to reduce or eliminate the impact of the rotary motion of the rotor on the elastic member. The movable ends of the two adjacent elastic members are attached to the protruding structure, reducing the impact at the movable end.

[0026] Preferably, the elastic member is an elastic sheet.

[0027] In the scheme, the elastic sheet with a sheet structure is easy to generate elastic force and control the size of the resetting force.

[0028] Preferably, the stator is provided with an extending structure, the rotor is provided with a slot, at least part of the extending structure is arranged in the slot and is gap-fitted in the rotary direction, the driving part is arranged on the slot, and the driven part is arranged on the extending structure.

[0029] One end of the elastic sheet is fixed to the rotor, and the other end of the elastic sheet is abutted to the stator, and the abutted direction of the elastic sheet is at least opposite to the rotary direction.

[0030] The elastic sheet and the slot or the extending structure are arranged in the rotary direction.

[0031] In the scheme, through the above setting of the extending structure and the slot, the rotor drives the stator to rotate and generates a gap-fitted relationship. Through the arrangement of the elastic sheet and the slot or the extending structure in the rotary direction, the driving structure (the driving structure formed by the extending structure and the slot) and the resetting structure (the resetting structure formed by the abutment of the elastic sheet and the stator) are arranged in the rotary direction, and do not affect each other, reducing the impact.

[0032] Preferably, the rotor is provided with a slot structure, and one end of the elastic sheet is inserted into the slot structure and fixedly connected.

[0033] The stator is provided with a protruding structure on the peripheral surface, and the other end of the elastic sheet extends to the protruding structure along the axial direction of the knob, and at least two adjacent other ends of the elastic sheet are attached to the protruding structure in the rotary direction and the opposite direction of the rotary direction, respectively.

[0034] In the scheme, through the above setting, the insertion mode of one end of the elastic sheet and the slot structure can adopt a mold injection fixed connection, realizing a reliable connection mode. The other ends of at least two adjacent elastic sheets are attached to the protruding structure through extension, generating a stable elastic force, which is beneficial to the stable resetting.

[0035] Preferably, the slot structure comprises two first fixing modules arranged along the radial direction of the rotor and two second fixing modules arranged perpendicularly to the radial direction, the two second fixing modules are arranged on the two sides of the first fixing modules perpendicularly to the radial direction, and one end of the elastic sheet is inserted into the gap between the two first fixing modules and the two second fixing modules perpendicularly to the radial direction and is fixedly connected.

[0036] In the scheme, the one end of the elastic sheet is inserted into the gap between the two first fixing modules and the two second fixing modules perpendicularly to the radial direction, a reliable fixed connection mode is realized, and the elastic sheet can be fixed by mold injection molding, which is easy to manufacture.

[0037] Preferably, the two sides of the two second fixing modules along the radial direction are located between the two sides of the two first fixing modules arranged oppositely along the radial direction.

[0038] In the scheme, the above arrangement is adopted to avoid interference between the second fixing module and the first fixing module, which is easy to manufacture.

[0039] Preferably, the stator is provided with a relief groove, the relief groove is arranged between the slot structure and the protruding structure, the other end of the elastic sheet passes through the relief groove along the axial direction of the knob and is attached to the protruding structure;

[0040] And / or, the protruding structure sequentially comprises a first part and a second part along the axial direction of the knob, and the first part is close to the elastic member;

[0041] The thickness of the first part along the rotation direction is greater than the thickness of the second part along the rotation direction, and the thickness of the first part along the rotation direction is greater than the interval between two adjacent elastic members;

[0042] The other end of the elastic sheet extends to the second part along the axial direction of the knob, and the part opposite to the first part of at least two adjacent elastic sheets protrudes towards the first part.

[0043] In the scheme, the length of the elastic sheet can be extended by the above arrangement, which is beneficial to the adjustment of the elastic force.

[0044] Through the above arrangement, at least two adjacent elastic sheets form arc-shaped structures facing each other at the two parts of the protruding structure, which has better elastic force. When the shapes of the two adjacent elastic sheets are the same, a symmetrical structure is formed, so that the reset forces in two directions are equal, and the impact is reduced.

[0045] Preferably, the knob comprises a plurality of reset members, and the plurality of reset members are arranged around the knob along the rotation direction.

[0046] And / or,

[0047] The angle detection sensor is a posture sensor, and the position of the posture sensor on the rotor coincides with the rotation axis of the rotor.

[0048] In the scheme, the multiple reset members arranged at intervals balance the reset force at each position of the rotation direction, reduce the impact, and facilitate the stability of the reset.

[0049] The angle detection sensor adopts a posture sensor to ensure the angle accuracy of detection. The position of the posture sensor on the rotor is arranged to coincide with the rotation axis of the rotor, so that when the positions do not coincide, angle conversion is not needed, and thus the difficulty of calculating the angle is reduced.

[0050] A stove comprises the knob as described above, and the stator of the knob is connected with a control rod of the stove.

[0051] In the scheme, the stove adopts the knob as described above, and the rotation of the stator has a confirmation process, so that the rotation of the stator is prevented from being triggered by mistake to cause the change of the firepower of the stove, and the energy is prevented from being wasted. The algorithm difficulty of converting the rotation angle of the knob into the firepower size is simplified, the size of the adjusted firepower is directly reflected, errors are avoided, the firepower adjustment control of the stove is easier and more accurate.

[0052] A stove-exhaustor linkage system comprises the stove and the exhaustor as described above, and the knob communicates with the exhaustor.

[0053] In the scheme, the stove-exhaustor linkage system adopts the knob and the exhaustor to communicate, feeds back the detection information of the knob on the stove to the exhaustor in time, and realizes the linkage of the stove and the exhaustor, so that the power consumption is reduced, and the energy is prevented from being wasted.

[0054] The positive progress effect of the present application is that the knob, the stove and the stove-exhaustor linkage system can prevent the rotation of the stator from being triggered by mistake to cause the change of the firepower of the stove, and the energy is prevented from being wasted. The algorithm difficulty of converting the rotation angle of the knob into the firepower size is simplified, the size of the adjusted firepower is directly reflected, errors are avoided, and the firepower adjustment control of the stove is easier and more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 FIG. 1 is a structure schematic diagram of the knob and the control rod of the stove of the present application embodiment 1.

[0056] Figure 2 FIG. 2 is an internal structure schematic diagram of the knob of the present application embodiment 1 after removing the shell.

[0057] Figure 3 FIG. 3 is an internal structure front view of the knob of the present application embodiment 1 after removing the shell.

[0058] Figure 4A bottom view of the rotor of embodiment 1 of the present application.

[0059] Figures 5a to 5f A schematic diagram of the process in which the knob of embodiment 1 of the present application is operated by a user from operation to operation completion.

[0060] BRIEF DESCRIPTION OF DRAWINGS

[0061] Joystick 1

[0062] Knob 2

[0063] Rotor 10

[0064] Slot 11

[0065] Driving part 12

[0066] Slot structure 13

[0067] First fixing module 131

[0068] Second fixing module 132

[0069] Stator 20

[0070] Extension structure 21

[0071] Driven part 22

[0072] Protruding structure 23

[0073] First part 231

[0074] Second part 232

[0075] Avoidance slot 24

[0076] Reset member 30

[0077] Elastic member 31

[0078] Elastic sheet 32

[0079] Housing 40

[0080] Circuit board 50

[0081] Micro switch 51

[0082] Angle detection sensor 52

[0083] Rotation direction A

[0084] Butt direction B

[0085] Radial direction C of the rotor DETAILED DESCRIPTION

[0086] The present application will be further described below by way of examples, but the present application is not limited in scope to the examples described.

[0087] Example 1

[0088] like Figure 1 As shown, this embodiment provides a knob 2 for a stove. The knob 2 is connected to the stove via a lever 1. Rotating the knob 2 causes the lever 1 to rotate, thereby adjusting the firepower of the stove.

[0089] like Figures 1-3 As shown, the knob 2 includes a housing 40, a circuit board 50, a stator 20, and a rotor 10. The circuit board 50, stator 20, and rotor 10 are all housed within the inner cavity of the housing 40 and protected by it. The circuit board 50 is fixedly connected to the upper surface of the rotor 10, which is positioned between the circuit board 50 and the stator 20. The stator 20 is fixedly connected to the control lever 1. The angle of rotation of the stator 20 is the same as the angle of rotation of the control lever 1, and the angle of rotation of the control lever 1 directly reflects the intensity of the stove's heat adjustment. The circuit board 50 has two microswitches 51 and multiple angle detection sensors 52. The microswitches 51 are triggered to activate the angle detection sensors, and the angle detection sensors 52 detect the angle of rotation of the knob 2. The circuit board 50 also has a wireless transmission module (not shown in the figure). This module transmits the information detected by the angle detection sensors 52 to the stove's combustion control system. The control system calculates and determines the stove's combustion state based on the received information and controls the stove to maintain sufficient combustion.

[0090] The driving part 12 of the rotor 10 and the driven part 22 of the stator 20 are in clearance fit in the rotation direction A of the rotor 10 driving the stator 20, so that the rotor 10 rotates by a preset angle and drives the stator 20 to rotate; wherein, the preset angle is the angle that the driving part 12 of the rotor 10 rotates from the initial state in the gap until it contacts the driven part 22 of the stator 20.

[0091] The knob 2 also includes a reset member 30. One end of the reset member 30 is fixed to the rotor 10, forming a fixed end, and the other end of the reset member 30 abuts against the stator 20, forming a movable end. Furthermore, the other end of the reset member 30 (i.e., the movable end) can be compressed or stretched when the rotor 10 rotates relative to the stator 20, generating a force opposite to the rotation direction A. This opposite force can drive the stator 20 or the rotor 10 back to its initial state when it is not compressed or stretched when the rotor 10 stops rotating relative to the stator 20, thus producing a reset effect.

[0092] The knob 2 is matched by the gap between the driving part 12 and the driven part 22, so that the rotor 10 and the stator 20 generate relative rotation when the driving part 12 has not rotated to the driven part 22, and the rotor 10 and the stator 20 can keep synchronous rotation when the driving part 12 rotates to the driven part 22. Thus, the rotation of the stator 20 has a confirmation process (if the relative rotation stops, the stator 20 will not be driven to generate synchronous rotation; if the relative rotation continues, the stator 20 will be driven to generate synchronous rotation, i.e. the confirmation of the synchronous rotation of the stator 20). The preset angle formed by the gap leaves a gap for the trigger micro switch and the driving stator, so that the knob 2 can not be rotated by accident to cause misjudgment of the start of the stove. The reset member 30 can generate a reset force when the rotor 10 and the stator 20 rotate relatively, and release the reset force when the rotor 10 and the stator 20 continue to rotate synchronously (at this time, because there is no relative rotation, the reset force cannot continue to be kept at the movable end and is released), so that the rotation angle formed in the relative rotation stage is eliminated, and only the angle in the synchronous rotation stage is kept. Therefore, in the whole rotation process, the algorithm difficulty of converting the rotation angle of the knob 2 into the size of the fire is simplified (because the rotation angle of the knob 2 only represents the rotation angle of the stator 20 for adjusting the size of the fire), the size of the fire is directly represented, errors are avoided, and the control of the size of the fire of the stove is easier and more accurate.

[0093] As shown in Figures 5a to 5f , a simplified process diagram of the angle change of the rotor 10 and the angle detection sensor 52 during the process that the knob 2 is operated by the user to the operation completion is shown. In order to show the rotation process, M is the mark position of the rotor 10, and N is the mark position of the angle detection sensor 52. As shown in Figure 5a , the initial state of the knob 2 is shown. The state can be the state of the knob in the off position when the stove is started for the first time, or the state of the knob 2 after being operated and waiting for the next operation.

[0094] As a preferred implementation, the method for detecting the angle of the knob 2 further comprises:

[0095] S110: When the rotor 10 is positively rotated by a first angle +a, the driving part 12 is started to contact the stator 20, and the angle detection sensor 52 is started. As shown in Figure 5b , the rotor 10 and the angle detection sensor 52 are both positively rotated by +a, i.e. the rotor 10 is rotated by the second gap L2. At this time, the micro switch 51 rotating with the driving part 12 is started to contact the stator 20, and the angle detection sensor 52 is woken up, so that the angle detection sensor 52 does not record the +a detection.

[0096] S210: When the rotor 10 continues to be subjected to the external force and rotates a second angle +b, the rotor 10 contacts the stator 20 and starts to rotate the stator 20. As shown in FIG. 2B, the rotor 10 and the angle detection sensor 52 are both rotated forward by the +a+b angle, and the angle detection sensor 52 detects and records the +b angle. Figure 5c

[0097] S310: When the rotor 10 rotates the stator 20 by a third angle +c, the rotor 10 is not subjected to the external force and stops rotating forward. As shown in FIG. 3B, the rotor 10 and the angle detection sensor 52 are both rotated forward by the +a+b+c angle, and the angle detection sensor 52 detects and records the +c angle. In this process, the rotor 10 rotates the stator 20 by the +c angle, and the control lever 1 of the cooking appliance rotates by the +c angle along with the stator 20. Figure 5d

[0098] S410: When the rotor 10 rotates reversely by a fourth angle -b, the driving part 12 starts to be separated from the stator 20, and the angle detection sensor 52 sends the second angle +b, the third angle +c and the fourth angle -b to the controller and is hibernated. As shown in FIG. 4B, in the step S310, after the rotor 10 rotates the stator 20 by the third angle +c, the user's operation in this time is ended and the force applied to the knob is stopped, and under the action of the reset part 30, the rotor 10 reversely rotates relative to the stator 20. In this process, the rotor 10 and the angle detection sensor 52 are both reversely rotated by the -b angle, and the angle detection sensor 52 detects and records the -b angle. Figure 5e Figure 5f Figures 5e to 5f As shown in FIG. 4C, under the action of the reset part 30, the rotor 10 continues to reversely rotate relative to the stator 20 until the -a angle is rotated, and the initial state of the rotor 10 relative to the stator 20 is restored. In the process from

[0099] S510: The control system calculates the rotation angle of the stator 20 according to the second angle +b, the third angle +c and the fourth angle -b. Thus, the angle of the stator 20 calculated according to the second angle +b, the third angle +c and the fourth angle -b is +c, which is consistent with the actual rotation angle of the stator 20 and can accurately reflect the rotation angle of the control lever.

[0100] ​​​​When the starting driving part 12 contacts with the stator, the angle detection sensor 52 is woken up; when the starting driving part 12 is separated from the stator, the angle detection sensor 52 is put to sleep, so that the angle detection sensor 52 is put to sleep again after the current operation of the knob 2 is completed, and can be woken up again at the next operation, which can further reduce the power consumption. And when the starting driving part 12 is separated from the stator, the detection value of the angle detection sensor 52 is obtained before the angle detection sensor 52 is put to sleep, wherein when the rotor 10 is not subjected to external force, the rotor 10 can rotate reversely, and the rotation angle of the stator 20 can be accurately calculated through the second angle, the third angle and the fourth angle.

[0101] Wherein, the stator 20 is provided with the protruding structure 21, the rotor 10 is provided with the slot 11, part of the protruding structure 21 is placed in the slot 11 and is in clearance fit in the rotation direction A, the driving part 12 is arranged on the slot 11, specifically, the side wall of the slot 11 in the rotation direction A; the driven part 22 is arranged on the protruding structure 21, specifically, the protrusion of the protruding structure 21 opposite to the driving part 12 in the rotation direction A.

[0102] In the embodiment, the reset member 30 is specifically an elastic sheet 32, one end of the elastic sheet 32 is fixed on the rotor 10, the other end of the elastic sheet 32 abuts against the stator 20, the abutting direction B of the elastic sheet 32 is opposite to the rotation direction A; the elastic sheet 32 is arranged in interval with the slot 11 or the protruding structure 21 in the rotation direction A. In the embodiment, from the perspective of looking down on the circuit board 50, the rotation direction A is the counterclockwise rotation direction, and the abutting direction is the clockwise rotation direction. In other embodiments, the direction of rotation is randomly selected, that is, the rotation direction can also be the clockwise rotation direction, and the abutting direction is the counterclockwise rotation direction.

[0103] Through the above-mentioned arrangement of the protruding structure 21 and the slot 11, a clearance fit relationship is generated, so that the rotor 10 and the stator 20 can realize relative rotation and synchronous rotation. Through the interval arrangement of the elastic sheet 32 and the slot 11 or the protruding structure 21 in the rotation direction A, the driving structure (the driving structure formed by the slot 11 and the protruding structure 21) and the reset structure (the reset structure formed by the abutting of the elastic sheet 32 and the stator 20) are arranged in interval, and do not affect each other, thereby reducing the impact.

[0104] In the embodiment, the reset member 30 adopts the elastic sheet 32 in sheet structure, which is easy to install and manufacture; the reset is realized by elastic force, and the size of the reset force is easy to adjust. In other embodiments, the reset member 30 can also adopt other products or devices capable of generating reset function, or the elastic member 31 used as the reset member 30 can also adopt other products having elastic function capable of generating reset function, for example, rubber strips or blocks.

[0105] In other embodiments, the positions of the protruding structure 21 and the slot 11 can be interchanged between the rotor 10 and the stator 20 according to structural requirements. That is, the protruding structure 21 can also be provided on the rotor 10, while the slot 11 is correspondingly provided on the stator 20, and the positions of the driving part 12 and the driven part 22 are adjusted accordingly. Furthermore, the shape and structure of the driving part 12 and the driven part 22 can be adjusted as needed.

[0106] Among them, such as Figures 3-4 As shown, in this embodiment, the knob 2 has two elastic pieces 32, and the rotor 10 has a slot structure 13. The slot structure 13 includes two first fixing modules 131 spaced apart along the radial direction C of the rotor and two second fixing modules 132 spaced apart perpendicular to the radial direction C. The two second fixing modules 132 are respectively located on the two sides of the first fixing module 131 perpendicular to the radial direction C. The entire rotor 10, including the slot structure 13, is integrally formed by injection molding, thereby inserting one end of the elastic piece 32 into the slot structure 13 and fixing it, thus achieving a reliable connection. The stator 20 has a protrusion structure 23 on its circumferential surface. The other ends of two adjacent elastic pieces 32 extend along the axial direction of the knob 2 to the protrusion structure 23 and fit against the protrusion structure 23 in opposite directions (i.e., the opposite directions of rotation direction A and rotation direction A).

[0107] Among them, such as Figure 4 As shown, the two sides of the two second fixing modules 132 along the radial direction C are located between the two sides of the two first fixing modules 131 that are arranged opposite each other along the radial direction C. With this arrangement, when injection molding is performed on the mold, the second fixing modules 132 that are injection molded are prevented from extending towards the first fixing modules 131 along the radial direction C to form thin edges; it also avoids interference with the first fixing modules 131, so that the entire structure that is integrally injection molded is easy to demold and easy to manufacture.

[0108] In the above structure, the other end (movable end) of the elastic piece 32 abuts against the protruding structure 23. During the rotation of the rotor 10 relative to the stator 20, the movable end of the elastic piece 32 is compressed, generating elastic deformation and accumulating elastic force. When the rotor 10 is not rotating relative to the stator 20, the elastic force can drive the stator 20 to reset in the opposite direction to the rotation direction A. The two elastic elements 31 are in contact with the protruding structure 23 in opposite directions, so that the knob 2 can generate a reset function regardless of which direction it is rotated. Furthermore, the two elastic pieces 32 arranged opposite to each other can generate a stable elastic force, which is beneficial to the stability of the reset and reduces the impact at the movable end.

[0109] And, through the above structure, the fixed end of the elastic sheet 32 is fixed on the rotor 10 generating rotational drive, and the movable end of the elastic sheet 32 generating elastic deformation is arranged on the stator 20 being driven, which is conducive to reducing or eliminating the impact of the rotational movement of the rotor 10 on the elastic member 31.

[0110] The elastic sheet 32 and the protruding structure 23 are abutted in a fitting manner, so that the elasticity is smooth and the impact is reduced, and the reset is more stable and will not jump or vibrate due to impact, avoiding causing angle calculation error, which is conducive to the calculation accuracy of converting the rotation angle of the knob 2 into firepower size.

[0111] In other embodiments, the number and arrangement position of the elastic sheet 32 can be adjusted as needed, for example, two pairs of elastic sheets 32 (one pair of elastic sheets 32 includes two elastic sheets 32) are arranged at different positions of the circumference of the knob 2 along the rotation direction A to balance the reset force size at different positions, further reduce the impact, and improve the stability of the reset. The overall reset force size can also be improved. The fixing mode of the elastic sheet 32 can also have various forms according to the shape, structure cooperation and other needs, for example, welding or riveting; and the movable end of the elastic sheet 32 can also have various cooperation structures to realize abutment. The protruding structure 23 for abutment can also adopt other shape structures or have no protruding structure 23, and directly use the surface of the stator 20 to form a structure capable of abutting with the elastic sheet 32.

[0112] As shown in Figure 3 The protruding structure 23 is sequentially arranged with a first part 231 and a second part 232 along the axial direction of the knob 2, and the first part 231 is close to the elastic sheet 32; the thickness of the first part 231 along the rotation direction A is greater than the thickness of the second part 232 along the rotation direction A, and the thickness of the first part 231 along the rotation direction A is greater than the interval between two adjacent elastic members 31.

[0113] The other end of the elastic sheet 32 extends to the second part 232 along the axial direction of the knob 2, and the part opposite to the first part 231 of the two adjacent elastic sheets 32 protrudes towards the first part 231, forming an oppositely arranged arc structure, which has better elastic force. When the shapes of the two adjacent elastic sheets 32 are the same, a symmetrical structure is formed, so that the reset forces in two directions are equal, and the impact is reduced.

[0114] Through the above structure arrangement, the first part 231 and the second part 232 form a structure with one thick end and one thin end, so that when the two adjacent elastic members 31 can be elastically clamped into the relatively thick second part 232 and abutted, the upward and downward impact in the axial direction is avoided, so that it is not separated, thereby affecting the reset effect.

[0115] As shown in Figure 3As shown, the stator 20 is provided with an avoiding slot 24, which is arranged between the slot structure 13 and the protruding structure 23, and the other end of the elastic sheet 32 passes through the avoiding slot 24 along the axial direction of the knob 2 and is attached to the protruding structure 23, so as to extend the length of the elastic sheet 32 and facilitate the elastic force adjustment.

[0116] In the embodiment, the angle detection sensor is a posture sensor, which can ensure the angle detection accuracy.

[0117] Embodiment 2,

[0118] The embodiment provides a stove, which comprises the knob 2 of embodiment 1, the knob 2 is connected to the stove through the operating rod 1, and the knob 2 is rotated to drive the operating rod 1 to rotate, so that the fire size of the stove can be adjusted.

[0119] The stove adopts the knob 2, and the rotation of the stator 20 has a confirmation process, so that the fire size of the stove is prevented from being changed due to the mistaken rotation of the stator 20, and energy is prevented from being wasted. The algorithm difficulty of converting the rotation angle of the knob 2 into the fire size is simplified, the fire size is directly reflected, errors are avoided, the stove fire size adjustment control is easier and more accurate.

[0120] Embodiment 3

[0121] The embodiment provides a stove-exhaustor linkage system, which comprises the stove of embodiment 2 and an exhaustor, and the knob 2 communicates with the exhaustor through a wireless transmission module on the circuit board 50.

[0122] The stove-exhaustor linkage system adopts the knob of embodiment 1 and communicates with the exhaustor, feeds back the detection information of the knob on the stove to the exhaustor in time, coordinates the control, realizes the stove-exhaustor linkage, reduces the power consumption, and avoids energy waste.

[0123] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A knob for a cooktop, characterized in that The knob includes a stator and a rotor. The driving part of the rotor and the driven part of the stator are in clearance fit in the direction in which the rotor drives the stator to rotate, so that the rotor rotates by a preset angle and drives the stator to rotate. The rotor is equipped with an angle detection sensor, which is used to rotate with the rotor and detect the rotation angle of the rotor. The knob also includes a reset member, one end of which is fixed to one of the rotor and the stator, and the other end of which abuts against the other of the rotor and the stator. The other end of the reset member is used to be compressed or stretched when the rotor rotates relative to the stator to generate a force opposite to the direction of rotation.

2. The knob of claim 1, wherein One of the rotor and the stator is provided with a protruding structure, and the other of the rotor and the stator is provided with a slot, at least part of the protruding structure is placed in the slot and is clearance-fitted in the rotation direction; The driving part is provided on one of the protruding structure and the slot, and the driven part is provided on the other of the protruding structure and the slot.

3. The knob of claim 1, wherein The reset member includes at least one elastic element, one end of which is fixed to one of the rotor and the stator, and the other end of which abuts against the other of the rotor and the stator. The abutting direction of at least one of the elastic elements is opposite to the rotation direction.

4. The knob of claim 3, wherein The reset member includes at least two elastic elements, the other ends of which respectively abut against one of the rotor and the stator in the direction of rotation and in the opposite direction of rotation.

5. The knob of claim 3, wherein The rotor and the stator have protruding structures on the components that abut against the elastic element, and the other end of the elastic element is in contact with the protruding structure.

6. The knob of claim 5, wherein The reset member includes at least two elastic members, and the other ends of at least two adjacent elastic members are respectively attached to the protruding structure in the direction of rotation and in the opposite direction of rotation.

7. The knob of claim 6, wherein The protruding structure is arranged in a first part and a second part along the axial direction of the knob, with the first part close to the elastic element; The thickness of the first part along the rotation direction is greater than the thickness of the second part along the rotation direction, and the thickness of the first part along the rotation direction is greater than the distance between two adjacent elastic elements; The other ends of the two adjacent elastic elements are respectively attached to the second part in the direction of rotation and in the opposite direction of rotation.

8. The knob of claim 6, wherein One end of the elastic element is fixed to the rotor, the protrusion structure is provided on the stator, and the other ends of two adjacent elastic elements are respectively attached to the protrusion structure in the opposite direction of the rotation direction.

9. The knob of any one of claims 3-8, wherein, The elastic element is an elastic sheet.

10. The knob of claim 9, wherein The stator has a protruding structure, the rotor has a slot, at least part of the protruding structure is placed in the slot and is clearance-fitted in the rotation direction, the driving part is provided on the slot, and the driven part is provided on the protruding structure; One end of the elastic sheet is fixed to the rotor, and the other end of the elastic sheet abuts against the stator, with the abutting direction of the elastic sheet being at least opposite to the rotation direction; The elastic sheet and the slot or the protruding structure are spaced apart in the rotation direction.

11. The knob of claim 10, wherein The rotor is provided with a slot structure, and one end of the elastic sheet is inserted into the slot structure and fixedly connected; The stator has a raised structure on its circumferential surface. The other end of the elastic sheet extends along the axial direction of the knob to the raised structure, and the other ends of at least two adjacent elastic sheets are respectively attached to the raised structure in the opposite direction of the rotation direction.

12. The knob of claim 11, wherein The slot structure includes two first fixing modules arranged radially spaced along the rotor and two second fixing modules arranged perpendicularly to the radial distance. The two second fixing modules are respectively located on the two sides of the first fixing modules perpendicular to the radial direction. One end of the elastic sheet is inserted into the gap between the second fixing modules and the two first fixing modules along the radial direction and is fixedly connected.

13. The knob of claim 12, wherein Both sides of the two second fixing modules along the radial direction are located between the two sides of the two first fixing modules that are arranged opposite each other along the radial direction.

14. The knob of claim 11, wherein The stator is provided with a clearance groove, which is located between the slot structure and the protrusion structure. The other end of the elastic piece passes through the clearance groove along the axial direction of the knob and fits against the protrusion structure. And / or, The protruding structure is arranged in a first part and a second part along the axial direction of the knob, with the first part close to the elastic element; The thickness of the first part along the rotation direction is greater than the thickness of the second part along the rotation direction, and the thickness of the first part along the rotation direction is greater than the distance between two adjacent elastic elements; The other end of the elastic sheet extends along the axial direction of the knob to the second part, and at least two adjacent portions of the elastic sheet opposite to the first part protrude toward the first part.

15. The knob of claim 1, wherein The knob includes a plurality of reset elements, which are spaced apart around the knob along the rotation direction; And / or, the angle detection sensor is an attitude sensor, and the position of the attitude sensor on the rotor coincides with the rotation axis of the rotor.

16. A stove, characterized in that, The cooktop includes a knob as described in any one of claims 1-15, the stator of the knob being connected to the control lever of the cooktop.

17. A range hood and stove linkage system, characterized in that, The stove-range hood linkage system includes the stove and range hood as described in claim 16, and the knob communicates with the range hood.

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