Magnetic knob and electric appliance

Abstract

The utility model provides a magnetic knob and an electric appliance, the magnetic knob comprises a stator part and a rotor part capable of rotating relative to the stator part, the stator part is fixedly provided with a guide rail, and a slide block is slidably installed along the guide rail; a return mechanism acts between the stator component and the sliding block, and when the magnetic knob is in a standing state, the sliding block is kept at a balance position under the action of the return mechanism; the rotor part is fixedly provided with a trigger part, and the trigger part is used for driving the sliding block to overcome the acting force of the return mechanism to slide from the balance position to the offset position along the guide rail in the process of passing through the trigger area along with the rotation of the rotor mechanism; the return mechanism is further used for forcing the sliding block to return from the offset position to the balance position along the guide rail after the trigger part rotates to leave the trigger area. The stator component is fixedly provided with a magnetic sensor, the sliding block is provided with a first magnet, and the magnetic sensor detects sliding of the sliding block by sensing the first magnet. The influence on the sliding block in the rotating process of the knob is utilized to sense the magnetic field change when the sliding block slides so as to detect the rotation of the knob.

Description

Technical Field

[0001] The utility model relates to the field of knobs, in particular to a magnetic knob and an electrical appliance. Background Art

[0002] The magnetic knob includes a stator component and a rotor component rotatably mounted on the stator component. In the existing solution, the stator component is fixed with a magnetic sensor, and the rotor component is fixed with a magnetic body. When the rotor component rotates relative to the stator component, the magnetic sensor detects the rotation angle position of the rotor component by sensing the magnetic body, thereby realizing the knob function.

[0003] In some scenarios, in order for the knob to periodically produce rotational feedback such as jerks and noises at a certain frequency during the process of the rotor component rotating one circle, a gear ring with teeth distributed along the circumference of the knob is provided on one of the rotor component and the stator component, and an elastic mechanism (such as a spring clip, a spring plunger, etc.) is installed on the other component. The elastic mechanism abuts against the gear ring under the action of its elastic force. When the user operates the rotor component to rotate, external force is required to force the elastic mechanism to pass over each tooth one by one, and the rotational resistance of the rotor component will rise and fall periodically, thereby producing an obvious jerky feel, and the elastic mechanism will collide with the next tooth after passing over one tooth, thereby producing an obvious clicking sound to realize the rotational feedback of the magnetic knob.

[0004] However, on the one hand, a feedback device is required to realize rotational feedback. For example, a gear ring with teeth distributed along the circumference of the knob is provided on one of the rotor component and the stator component, and an elastic mechanism (such as a spring clip, a spring plunger, etc.) is installed on the other component. On the other hand, in order to realize the detection of the rotation angle of the knob, a magnetic body is provided on the rotor component, and the magnetic body is sensed by a magnetic sensor to realize the detection of the rotation angle of the rotor component. It can be seen that in the existing knob scheme, the knob rotation is detected by the magnetic body on the rotor component. How to realize the knob rotation feedback while utilizing the influence of the rotor component on the feedback device during the rotation process to realize the detection of the knob rotation by induction of the feedback device is an urgent problem to be solved. Utility Model Content

[0005] One of the purposes of the utility model is to provide a magnetic knob and an electrical appliance.

[0006] The utility model provides a magnetic knob, which comprises a stator component and a rotor component rotatable relative to the stator component, wherein the stator component is fixedly provided with a guide rail, and a slider is slidably installed along the guide rail; a return mechanism acts between the stator component and the slider, and when the magnetic knob is in a static state, the slider is kept in a balanced position under the action of the return mechanism; the rotor component is fixedly provided with a trigger part, and the trigger part is used to drive the slider to overcome the action of the return mechanism from the balanced position to the biased position along the guide rail during the process of the rotor component rotating through the trigger area, and the return mechanism is also used to force the slider to return from the biased position to the balanced position along the guide rail after the trigger part rotates to leave the trigger area, and the trigger area is adjacent to or intersects with the area between the balanced position and the biased position; the stator component is fixedly provided with a magnetic sensor, and the slider is fixedly provided with a first magnet, and the magnetic sensor detects the sliding of the slider by sensing the first magnet.

[0007] As can be seen from the above, in the utility model, the stator component is fixedly provided with a guide rail, and a slider is slidably installed along the guide rail; a return mechanism acts between the stator component and the slider, and when the magnetic knob is in a static state, the slider is kept in a balanced position under the action of the return mechanism; the rotor component is fixedly provided with a trigger part, and as the user rotates the rotor component, the trigger part is used to drive the slider to overcome the force of the return mechanism from the balanced position to the offset position along the guide rail in the process of passing through the trigger area with the rotation of the rotor mechanism, and the return mechanism is also used to force the slider to return from the offset position to the balanced position along the guide rail after the trigger part rotates out of the trigger area; based on this structure, the slider During the sliding process, the force exerted by the return mechanism will change with the distance the slider slides away from the equilibrium position, causing the rotational resistance of the rotor component to change, thereby producing a jerking feel; at the same time, based on this structure, a magnetic sensor is further fixed on the stator component, and a first magnet is set on the slider. During the rotation of the rotor component, this structure is used to realize the magnetic sensor to sense the change in the magnetic field when the slider slides to detect the sliding of the slider, and then to detect the rotation of the rotor component. In this way, while realizing the feedback of the knob rotation, the influence of the knob on the slider during the rotation of the knob is utilized, and the knob rotation is detected by sensing the change in the magnetic field when the slider slides.

[0008] In one possible implementation, the guide rail extends along a tangent direction of the movement trajectory of the triggering portion.

[0009] In an implementable manner, the equilibrium position is located at the middle of the guide rail along the extension direction; and the offset position is located at the end of the guide rail along the extension direction.

[0010] In one possible implementation, the return mechanism includes a first elastic member connected to the stator component and the slider.

[0011] In one possible implementation, the return mechanism also includes a second elastic member connected to the stator component and the slider; the first elastic member and the second elastic member are both fixed to the stator component; when the slider is located in the equilibrium position, the slider is clamped between the first elastic member and the second elastic member along the sliding direction of the slider.

[0012] In one possible implementation, the stator component is fixed with a limiting structure, which is located on one side of the equilibrium position along a direction perpendicular to the sliding direction of the slider; when the slider is at the equilibrium position, the limiting structure is clamped between the first elastic component and the second elastic component along the sliding direction of the slider.

[0013] As can be seen from the above, by further setting a limiting structure, the limiting structure is located on the side of the equilibrium position perpendicular to the sliding direction, and when the slider is in the equilibrium position, along the sliding direction of the slider, the limiting structure is clamped between the first elastic component and the second elastic component; at this time, when the slider is in the equilibrium position, along the sliding direction of the slider, the limiting structure and the slider are clamped between the first elastic component and the second elastic component at the same time, and the equilibrium position can be accurately positioned. Under the interaction of the limiting structure, the first elastic component and the second elastic component, the slider can more accurately position the equilibrium position, thereby avoiding the offset of the equilibrium position and the reduction of the knob accuracy, and the slider can be maintained in an accurate equilibrium position when it is in a static state, and is not affected by fatigue, deformation or loose displacement of the elastic mechanism, which causes the equilibrium position to shift.

[0014] In one possible implementation, the return mechanism includes a magnetic member fixed to the stator component; the magnetic member is arranged near the equilibrium position, and the slider slides back from the biased position to the equilibrium position under the action of the magnetic attraction force between the first magnet and the magnetic member; or, the magnetic member is arranged near the biased position, and the slider slides back from the biased position to the equilibrium position under the action of the magnetic repulsion force between the first magnet and the magnetic member.

[0015] In one possible implementation, the trigger portion is a protrusion fixed to the rotor component. When the protrusion rotates through the trigger area, it collides with and maintains contact with the slider, moving the slider from the equilibrium position to the offset position; when the slider slides to the offset position, it loses contact with the protrusion.

[0016] From the above, it can be seen that since the collision sound can also be generated when the protrusion collides with the slider, during the rotation of the rotor component, under the interaction between the protrusion and the slider, and under the interaction between the slider and the return mechanism, two types of feedback, namely the collision sound and the jerking feel, can be generated simultaneously.

[0017] In an implementable manner, the trigger portion is fixedly provided with a magnetic attraction member, and when the magnetic attraction member rotates through the trigger area, it is attracted to the first magnet and drives the slider from the equilibrium position to the biased position.

[0018] In a second aspect, the utility model provides an electrical appliance.

[0019] The utility model provides an electrical appliance comprising a casing and any one of the above-mentioned magnetic knobs, wherein the magnetic knob is mounted on the casing through a stator component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of an embodiment of the magnetic knob of the utility model;

[0021] Figure 2 It is a three-dimensional cross-sectional view of an embodiment of the magnetic knob of the utility model;

[0022] Figure 3 This is the decomposition of the magnetic knob embodiment of the utility model Figure 1 ;

[0023] Figure 4 This is the decomposition of the magnetic knob embodiment of the utility model Figure 2 ;

[0024] Figure 5 This is a top view of the bracket of the magnetic knob embodiment of the utility model;

[0025] Figure 6 It is a top view of the rotor component of the magnetic knob embodiment of the utility model. DETAILED DESCRIPTION

[0026] This embodiment of Figures 1 to 6 A unified spatial rectangular coordinate system (right-hand system) is used to represent the relative position relationship between various features, wherein the Y-axis direction is the first direction, the Z-axis direction is the vertical direction, and the positive direction of the Z-axis is vertically upward.

[0027] Please refer to Figures 1 to 6 The electrical appliance of this embodiment may be, for example, a refrigerator, a washing machine, an air conditioner, etc. The electrical appliance includes a casing and a knob with a rotary feedback induction of this embodiment. The knob is mounted on the casing through a stator component. For example, the base 11 described later is fixed to the casing by screws, gluing, etc.

[0028] The magnetic knob of this embodiment includes a stator component 1, a rotor component 2 that can rotate relative to the stator component 1, the rotation axis of the rotor component 2 is along the Z-axis direction, the stator component 1 includes a base 11, a lifting bracket 12 and a display module 13, the base 11, the lifting bracket 12 and the display module 13 are distributed in sequence along the positive direction of the Z-axis and their main body contours are all disc-shaped, and the center lines of the main body contours of the base 11, the lifting bracket 12 and the display module 13 are all along the Z-axis direction and coincide with the rotation axis of the rotor component 2.

[0029] The lifting bracket 12 is movably mounted on the positive Z-axis side of the base 11 along the Z-axis direction, the display module 13 is fixedly connected to the positive Z-axis side of the lifting bracket 12, and the rotor component 2 surrounds the outer periphery of the lifting bracket 12 and the display module 13, and is rotatably connected to the lifting bracket 12. The base 11 has a guide hole 111 penetrating along the Z-axis direction, and a first protective cylinder 112 extending along the positive Z-axis direction, the guide hole 111 is located on the radial inner side of the first protective cylinder 112, and the lifting bracket 12 has a second protective cylinder 121 extending from the negative Z-axis side wall to the negative Z-axis direction, and the center line of the first protective cylinder 112, the center line of the second protective cylinder 121 and the rotation axis of the rotor component 2 coincide with each other.

[0030] The second protective cylinder 121 surrounds the radial inner side of the first protective cylinder 112, and the second protective cylinder 121 is arranged in the guide hole 111. There is a distance between the second protective cylinder 121 and the first protective cylinder 112. The outer periphery of the first protective cylinder 112 is sleeved with a coil spring 4. The second protective cylinder 121 and the hole wall of the first protective cylinder 112 are slidably matched. The negative end of the coil spring 4 in the Z axis abuts against the base 11, and the positive end of the coil spring 4 in the Z axis abuts against the lifting bracket 12. The elastic force of the coil spring 4 forces the first protective cylinder 112 to abut against the negative end of the Z axis of the bracket.

[0031] In this embodiment, the coil spring 4 sleeved on the outer circumference of the first protective cylinder 112 is used to provide a reset force along the positive direction of the Z axis for the lifting bracket 12, so that the lifting bracket 12 can be reset to the positive direction of the Z axis under the action of the reset force of the coil spring 4 after being pressed. Optionally, in other embodiments of the present invention, other types of lifting and resetting mechanisms can also be used to provide a reset force for the lifting bracket 12. For example, the lifting and resetting mechanism can also be a single coil spring abutting against the middle part of the positive side wall of the base 11 in the Z axis and the middle part of the negative side wall of the Z axis of the lifting bracket 12, or a spring sheet fixed to the lifting bracket 12 and abutting against the base 11, or a spring sheet fixed to the base 11 and abutting against the lifting bracket 12, or mutually repelling magnets respectively fixed to the base 11 and the lifting bracket 12.

[0032] When the user presses the lifting bracket 12, the button 5 can be triggered, thereby realizing the response button function.

[0033] The stator component 1 is fixedly provided with a guide rail 122, and a slider 7 is slidably installed along the guide rail 122; a return mechanism 6 acts between the stator component 1 and the slider 7, and when the magnetic knob is in a static state, the slider 7 is maintained in a balanced position under the action of the return mechanism 6; the rotor component 2 is fixedly provided with a trigger part 21, and the trigger part 21 is used to drive the slider 7 to slide from the balanced position along the guide rail 122 to the offset position to overcome the force of the return mechanism 6 during the process of rotating with the rotor component 2 through the trigger area. The return mechanism 6 is also used to force the slider 7 to return from the offset position to the balanced position along the guide rail 122 after the trigger part 21 rotates out of the trigger area, and the trigger area is adjacent to or intersects with the area between the balanced position and the offset position; the stator component 1 is fixedly provided with a magnetic sensor (not shown in the figure), and the slider 7 is fixedly provided with a first magnet 71, and the magnetic sensor detects the sliding of the slider 7 by sensing the first magnet 71.

[0034] It should be noted that the guide rail 122 is used to enable the slider 7 to slide between designated areas. The guide rail 122 can be a slide groove, a slide rod, a track, etc., which is not limited here. In the embodiment of the present application, the guide rail 122 is specifically a slide groove for explanation.

[0035] In the embodiment of the present application, the guide rail 122 extends along the tangent direction of the motion trajectory of the trigger portion 21. In other embodiments, the guide rail may also extend along a direction perpendicular to the tangent direction of the motion trajectory of the trigger portion 21, or may extend along other directions, such as extending along a tangent direction inclined at a preset angle to the motion trajectory of the trigger portion 21.

[0036] In the embodiment of the present application, the equilibrium position is located at the middle of the guide rail 122 along the extension direction; the offset position is located at the end of the guide rail 122 along the extension direction. In other embodiments, the equilibrium position and the offset position may also be other positions of the guide rail along the extension direction.

[0037] In the embodiment of the utility model, the trigger part 21 in the rotor part 2 can be a protrusion, a gear ring or a magnetic attraction part fixed on the rotor part 2. Among them, the gear ring is evenly distributed along the circumference of the magnetic knob; the protrusion can be one or more; the magnetic attraction part can be a magnet with opposite magnetic properties to the first magnet 71 on the slider, or a multi-pole magnetic ring, or a metal that can be magnetically attracted. The trigger part 21 and the slider 7 can be distributed along the axial direction of the magnetic knob, or along the radial direction of the magnetic knob.

[0038] Specifically, in the embodiment of the present application, taking the extension of the guide rail 122 along the motion trajectory of the trigger part 21, and the radial distribution of the trigger part 21 and the slider 7 along the magnetic knob as an example, when the user rotates the rotor component 2 counterclockwise, the trigger part 21 rotates counterclockwise through the trigger area, driving the slider 7 to overcome the force of the return mechanism 6, and slides along the guide rail from the equilibrium position to the offset position along the positive side of the Y-axis, that is, the position where the force of the trigger part 21 on the slider 7 is less than the force of the return mechanism 6, and after the trigger part 21 rotates out of the trigger area, the return mechanism 6 forces the slider 7 to return to the equilibrium position along the guide rail 122 along the negative side of the Y-axis. When the user rotates the rotor component 2 clockwise, the trigger part 21 rotates clockwise in the trigger area, driving the slider 7 to overcome the force of the return mechanism 6 and slide along the negative side of the Y-axis from the equilibrium position along the guide rail to the offset position, that is, the position where the force of the trigger part 21 on the slider 7 is less than the force of the return mechanism 6, and after the trigger part 21 rotates out of the trigger area, the return mechanism 6 forces the slider 7 to return to the equilibrium position along the guide rail 122 along the positive side of the Y-axis from the offset position.

[0039] As can be seen from the above, in the embodiment of the utility model, as the user rotates the rotor component, the trigger part is used to drive the slider to overcome the force of the return mechanism and slide from the equilibrium position to the offset position along the guide rail in the process of rotating with the rotor mechanism through the trigger area, and the return mechanism is also used to force the slider to return from the offset position to the equilibrium position along the guide rail after the trigger part rotates out of the trigger area; based on this structure, the force of the return mechanism on the slider during sliding will change with the distance the slider slides away from the equilibrium position, so that the rotation resistance of the rotor component changes, thereby producing a jerky feel; at the same time, on the basis of the structure of the magnetic knob, a magnetic sensor is further fixed on the stator component, and a first magnet is set on the slider. During the rotation of the rotor component, the structure is used to realize the magnetic sensor sensing the change of the magnetic field when the slider slides to detect the sliding of the slider, thereby detecting the rotation of the knob. In this way, while realizing the feedback of the knob rotation, the influence on the slider during the rotation of the knob is realized, and the knob rotation is detected by sensing the change of the magnetic field when the slider slides.

[0040] In the embodiment of the utility model, when the trigger part 21 rotates with the rotor component 2 and passes through the trigger area, the action between the trigger part 21 and the slider 7 can be the thrust of the trigger part 21 on the slider 7, or the magnetic force generated between the trigger part 21 and the slider 7, thereby driving the slider 7 to overcome the force of the return mechanism 6 and slide from the equilibrium position along the guide rail 122 to the offset position.

[0041] Specifically, when the action between the trigger part 21 and the slider 7 is the thrust of the trigger part 21 on the slider 7, the trigger part 21 is used to collide with and maintain contact with the slider 7 during the process of rotating through the trigger area, and the slider 7 is moved from the equilibrium position to the biased position, and the slider 7 is disengaged from the trigger part 21 when sliding to the biased position. In this case, the trigger part 21 can be at least one protrusion fixed to the outer periphery of the rotor component, and the protrusion collides with and maintains contact with the slider 7 during the process of rotating through the trigger area, and the slider is moved from the equilibrium position to the biased position; the slider 7 is disengaged from the protrusion when sliding to the biased position.

[0042] From the above, it can be seen that since the collision sound can also be generated when the protrusion collides with the slider, during the rotation of the rotor component, under the interaction between the protrusion and the slider, and under the interaction between the slider and the return mechanism, two types of feedback, namely the collision sound and the jerking feel, can be generated simultaneously.

[0043] Specifically, when the action between the trigger part 21 and the slider 7 is the magnetic force generated between the trigger part 21 and the slider 7, the trigger part 21 may also be provided with a magnetic attraction member (not shown in the figure), such as a magnetically attractable metal block, a magnet, or a multi-polar magnetic ring arranged in the circumference of the rotor component. When the magnetic attraction member is a magnet or a multi-polar magnetic ring, the magnetic poles of the magnet are opposite to the mutually facing surface magnetic poles of the first magnet 71.

[0044] Specifically, when the magnetic member rotates through the trigger area, it attracts the first magnet 71 and drives the slider 7 from the equilibrium position to the offset position. The slider no longer moves with the magnetic member under the action of the return mechanism 6 because the attraction between the magnetic member and the first magnet is weakened; or, after the slider slides to the offset position, it can no longer move with the magnetic member due to the travel limit of the guide rail 122.

[0045] In the embodiment of the utility model, the return mechanism 6 can be an elastic mechanism connected to the stator component 1 and the slider 7, and the slider returns to the equilibrium position by the elastic force; the return mechanism 6 can also be a magnetic member (not shown in the figure) fixed to the stator component 1; when the position of the magnetic member arranged on the stator component 1 is close to the equilibrium position, the slider 7 slides back to the equilibrium position from the offset position under the action of the magnetic attraction force between the first magnet and the magnetic member, and remains in the equilibrium position; when the position of the magnetic member arranged on the stator component 1 is close to the two end positions of the guide rail 122, the slider 7 slides back to the equilibrium position from the offset position under the action of the magnetic repulsion force between the first magnet 71 and the magnetic member, and remains in the equilibrium position; the return mechanism 6 can also be a combination of an elastic mechanism and a magnetic member, and the slider is simultaneously acted upon by the elastic force and the magnetic force to return to the equilibrium position.

[0046] When the return mechanism 6 includes an elastic mechanism installed on the stator component, the elastic mechanism may include a first elastic member connected to the stator component 1 and the slider 7, and the first elastic member is connected to any one of the two side surfaces of the slider 7 along the sliding direction; the return mechanism may further include a second elastic member connected to the stator component and the slider, and the first elastic member and the second elastic member are both fixed to the stator component; when the slider 7 is in the equilibrium position, along the sliding direction of the slider 7, the slider 7 is clamped between the first elastic member and the second elastic member. Among them, when the elastic mechanism only includes the first elastic member, the first elastic member is fixedly connected to the slider; when the elastic mechanism further includes the second elastic member on the basis of including the first elastic member, the first elastic member and the second elastic member may be fixedly connected or relatively movable.

[0047] It should be noted that the first elastic member and the second elastic member may be parts of an elastic mechanism, such as a spring clip or an elastic arm of an 8-shaped spring; or may be a specific elastic mechanism, such as a coil spring or an elastic clip.

[0048] Specifically, when the elastic mechanism includes a first elastic member, the elastic mechanism may include only the first elastic member, or may include multiple elastic members other than the first elastic member. When the elastic mechanism includes only the first elastic member, the elastic mechanism may be a coil spring, an elastic clip, a spring, etc. connecting the slider and the stator component; the first elastic member is connected to the stator component, and the other end is fixed to one side of the slider along the sliding direction; the slider is kept in a balanced position under the elastic force of the elastic mechanism; and after the trigger portion rotates out of the trigger area, the slider is forced to return to the balanced position along the guide rail from the offset position.

[0049] Specifically, when the elastic mechanism includes a first elastic component and a second elastic component, the elastic mechanism can be an elastic mechanism, such as a spring clip or an 8-shaped spring. When the slider is in a balanced position, the two elastic arms of the elastic mechanism are respectively clamped on the two sides of the slider along the sliding direction; the elastic mechanism also includes two elastic mechanisms, such as, when the slider is in a balanced position, two coil springs, spring sheets, elastic clips, etc., which are respectively connected to the two sides of the slider along the sliding direction.

[0050] It should be noted that the elastic mechanism can be directly fixed to the stator bracket by screws, glue, etc., or the elastic mechanism can be fixed to the pillar by a pillar fixed to the stator bracket, so as to fix the elastic mechanism to the stator bracket. In other embodiments, the elastic mechanism can also be fixed to the stator bracket by means of a lock, etc., which is not limited here.

[0051] As the spring becomes fatigued, deformed, loosened, or displaced with use, the force exerted by the trigger portion 21 on the slider 7 may be less than the force exerted by the return mechanism 6 on the slider 7, resulting in an offset in the positioning of the equilibrium position, a deviation in the return of the slider, or an offset in the equilibrium position maintained by the slider under the action of the return mechanism when the slider is in a static state. In this embodiment, the stator component is also provided with a limiting structure (not shown in the figure), which is located on one side of the equilibrium position perpendicular to the sliding direction of the slider; when the slider is in the equilibrium position, the limiting structure is clamped between the first elastic member and the second elastic member along the sliding direction of the slider; that is, when the slider is in the equilibrium position, the elastic structure and the slider are simultaneously clamped between the first elastic member and the second elastic member.

[0052] It should be noted that the first elastic member and the second elastic member may include a support member fixed at the end connected to the slider, such as the first elastic member and the second elastic member respectively include a coil spring, and a support plate / support block is fixed at the end connected to the slider, and both elastic members are connected to the slider via the support plate. In this case, the support plate of the first elastic member and the support plate of the second elastic member need to abut against the limiting structure and the two side surfaces of the slider along the sliding direction at the same time.

[0053] Specifically, the limiting structure may include a fixed component fixed to the lifting bracket 12 near the equilibrium position, and the width of the fixed component along the sliding direction of the slider 7 may be the same as or different from the width of the slider 7 along the sliding direction, wherein the fixed component may be a fixed block, a fixed frame, etc., and the type of the fixed component is not limited here; the limiting structure may also include multiple fixed components fixed to the lifting bracket 12 near the equilibrium position, and the width between two fixed components along the sliding direction of the slider 7 may be the same as or different from the width of the slider 7 along the sliding direction.

[0054] From the above, it can be seen that by further setting a limiting structure, under the interaction between the limiting structure and the elastic mechanism, after the trigger part rotates out of the trigger area, the slider is subjected to the force of the return mechanism to return from the offset position along the guide rail to the equilibrium position. The equilibrium position can be located more accurately, and the slider can be accurately maintained in the equilibrium position when it is in a static state, and is not affected by fatigue, deformation or loose displacement of the elastic mechanism, which causes the equilibrium position to shift.

[0055] When the return mechanism 6 includes a magnetic part (not shown in the figure) fixed to the stator component 1; the magnetic part is arranged near the equilibrium position, and the slider 7 slides back to the equilibrium position from the biased position under the action of the magnetic attraction force between the first magnet 71 and the magnetic part; or, the magnetic part is arranged near the biased position, and the slider 7 slides back to the equilibrium position from the biased position under the action of the magnetic repulsion force between the first magnet 71 and the magnetic part.

[0056] It should be noted that, in the embodiment of the present application, the adjacent balance position is set to be located on the side of the balance position on the guide rail or the stator component along the sliding direction perpendicular to the slider, and close to the balance position; the adjacent offset position is set to be located on the side of the offset position on the stator component or the guide rail along the sliding direction of the slider away from the balance position.

[0057] Specifically, the magnetic piece is arranged near the equilibrium position, and the magnetic piece can be a magnetically attractive metal, such as an iron material; the magnetic piece can also be a return magnet, and the magnetic poles of the surfaces facing each other of the first magnet 71 and the return magnet are different; the slider 7 slides back to the equilibrium position under the action of the magnetic attraction of the return magnet and the first magnet 71.

[0058] Furthermore, when the return mechanism 6 is a magnetic part and the force between the slider 7 and the return mechanism 6 is a suction force, a clicking sound can be emitted by the collision between the trigger part 21 and the slider 7, and by the collision between the slider 7 and the return mechanism 6. In the process of turning the knob, a clicking sound can be emitted by the collision between the trigger part 21 and the slider 7, and by the collision between the slider 7 and the return mechanism 6, thereby producing a good feedback feeling.

[0059] Specifically, during the rotation of the knob, a clicking sound is emitted by the collision between the trigger part 21 and the slider 7, and a clicking sound is emitted by the collision between the slider 7 and the return mechanism 6 to generate a feedback sense. As an example, the trigger part is a protrusion, which collides with and maintains contact with the slider during the rotation through the trigger area, thereby moving the slider from the equilibrium position to the offset position. The slider is disengaged from the protrusion when it slides to the offset position. The magnetic member is movable along a sliding direction perpendicular to the slider. The magnetic member is fixed to a side adjacent to the equilibrium position and away from the trigger part along a side perpendicular to the sliding direction of the slider, and the magnetic member is connected to the stator bracket by an elastic member. Alternatively, a second magnet that can generate an attractive force with the magnetic member is provided on a side of the magnetic member away from the trigger part along a side perpendicular to the sliding direction of the slider, and the magnetic member moves back and forth along a direction perpendicular to the sliding direction of the slider under the suction of the first magnet on the slider and the suction of the second magnet. When the slider is driven by the protrusion to leave the equilibrium position, the magnetic part is attracted by the elastic part or the second magnet and slides away from the guide rail in a direction perpendicular to the sliding direction of the slider; when the slider is disengaged from the protrusion when sliding to the offset position and returns to the equilibrium position under the attraction of the magnetic part, the magnetic part is attracted by the first magnet in the equilibrium position and slides toward the guide rail in a direction perpendicular to the sliding direction of the slider and collides with the slider. Furthermore, in order to prevent the magnetic part from directly colliding with the slider and damaging the slider, a protective device can be set between the magnetic part and the slider. When the magnetic part collides with the side wall of the protective device during the back and forth movement, a clicking sound can be made, thereby generating a feedback sense.

[0060] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnetic knob, comprising a stator component and a rotor component rotatable relative to the stator component, characterized in that: The stator component is fixed with a guide rail, and a slider is slidably installed along the guide rail; A return mechanism is provided between the stator component and the slider, and when the magnetic knob is in a stationary state, the slider is kept in a balanced position under the action of the return mechanism; The rotor component is fixedly provided with a triggering part, and the triggering part is used to drive the slider to overcome the force of the return mechanism and slide from the equilibrium position to the biased position along the guide rail when the rotor component rotates through the triggering area. The return mechanism is also used to force the slider to return from the biased position to the equilibrium position along the guide rail after the triggering part rotates away from the triggering area. The triggering area is adjacent to or intersects with the area between the equilibrium position and the biased position. The stator component is fixedly provided with a magnetic sensor, the slider is fixedly provided with a first magnet, and the magnetic sensor detects the sliding of the slider by sensing the first magnet.

2. The magnetic knob according to claim 1, characterized in that: The guide rail extends along a tangent direction of a motion track of the triggering portion.

3. The magnetic knob according to claim 1, characterized in that: The equilibrium position is located in the middle of the guide rail along the extension direction; The offset position is located at an end of the guide rail along the extension direction.

4. The magnetic knob according to claim 1, characterized in that: The return mechanism includes a first elastic component connected to the stator component and the slider.

5. The magnetic knob according to claim 4, characterized in that: The return mechanism further includes a second elastic member connected to the stator component and the slider; The first elastic member and the second elastic member are both fixedly mounted on the stator component; When the slider is located at the balanced position, the slider is clamped between the first elastic member and the second elastic member along the sliding direction of the slider.

6. The magnetic knob according to claim 5, characterized in that: The stator component is fixedly provided with a limiting structure, and the limiting structure is located on one side of the equilibrium position along a direction perpendicular to the sliding direction of the slider; When the slider is located at the equilibrium position, along the sliding direction of the slider, the limiting structure is clamped between the first elastic component and the second elastic component.

7. The magnetic knob according to claim 1, characterized in that: The return mechanism comprises a magnetic member fixed to the stator component; The magnetic member is disposed adjacent to the equilibrium position, and the slider slides back from the biased position to the equilibrium position under the magnetic attraction of the first magnet and the magnetic member; Alternatively, the magnetic member is disposed adjacent to the biased position, and the slider slides back from the biased position to the balanced position under the action of the magnetic repulsion between the first magnet and the magnetic member.

8. The magnetic knob according to any one of claims 1 to 7, characterized in that: The triggering portion is a convex block fixed to the rotor component. When the convex block rotates through the triggering area, it collides with and keeps in contact with the slider, thereby moving the slider from the equilibrium position to the biased position. The slider is out of contact with the protrusion when sliding to the biased position.

9. The magnetic knob according to any one of claims 1 to 7, characterized in that: The trigger portion is fixed with a magnetic attraction member, and when the magnetic attraction member rotates through the trigger area, it is attracted to the first magnet and drives the slider from the equilibrium position to the biased position.

10. An electrical appliance, including a housing, characterized in that: It also includes the magnetic knob according to any one of claims 1 to 9, wherein the magnetic knob is mounted on the housing through the stator component.

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