Knob assembly and electric appliance

Abstract

The utility model relates to the field of knobs, in particular to a knob assembly and an electric appliance, the electric appliance provided by the utility model comprises the knob assembly, and in order to solve the problem of single function of the existing knob, the knob assembly provided by the utility model comprises a knob stator; a knob rotor rotatably mounted to the knob stator about a first axis; the knob stator is mounted on the base in a three-dimensional swinging manner around a first point, and the knob rotor is exposed out of the outer side of the base; and the key is arranged between the base and the knob stator and is triggered in response to the swing of the knob stator. Therefore, a user can operate the knob stator and the knob rotor to swing around the first point so as to realize the key function.

Description

Technical Field

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

[0002] Existing electrical appliances widely use knobs for function adjustment and control, such as using knobs on washing machines to adjust the washing mode, using knobs on water heaters to adjust the heating temperature, etc.

[0003] However, the functions of existing knobs are relatively single, which is not conducive to meeting the diverse adjustment needs of users. Utility Model Content

[0004] One of the purposes of the present invention is to overcome the above-mentioned drawbacks, and the present invention provides a knob assembly.

[0005] The knob assembly provided by the utility model includes a knob stator; a knob rotor, which is rotatably mounted on the knob stator around a first axis; a base, on which the knob stator is mounted so as to be able to swing three-dimensionally around a first point, and the knob rotor is exposed on the outside of the base; and a button, which is mounted between the base and the knob stator and is used to be triggered in response to the swing of the knob stator.

[0006] As can be seen from the above, the user can realize the key function by manipulating the knob stator and the knob rotor to swing around the first point.

[0007] A preferred solution is that a feedback mechanism for generating setback damping is provided between the knob rotor and the knob stator.

[0008] As can be seen from the above, when the user does not use the knob function (when the knob rotor is not operated to rotate relative to the knob stator), the knob rotor can be kept relatively stably in a stationary state relative to the knob stator, which is convenient for the user to manipulate the knob stator and the knob rotor relative to the base around the first point to realize the button function by holding the knob rotor, and it is not easy to cause the knob rotor to rotate abnormally relative to the knob stator, which is not easy to cause abnormal knob function, which is conducive to the user to realize the knob function and button function by holding the knob rotor.

[0009] A further solution is that the feed mechanism includes a ring gear structure and a touch-pressure structure, one of the knob stator and the knob rotor is formed with a ring gear structure, and the other is installed with a movable touch-pressure structure, the center line of the ring gear structure coincides with the first axis, and the touch-pressure structure abuts against the tooth surface of the ring gear structure under the action of elastic force or magnetic force: or the feed mechanism includes a first magnet and a second magnet that attract each other, the first magnet is fixed to the knob stator, and the second magnet is fixed to the knob rotor, and at least one of the first magnet and the second magnet has multiple ones distributed along the circumference of the knob assembly.

[0010] Another preferred solution is that the first point is located on the first axis.

[0011] As can be seen from the above, this is conducive to improving the performance consistency of the knob stator and the knob rotor when they swing in different directions, so that the user has a more consistent experience when operating the knob stator and the knob rotor to swing in different directions together, which is conducive to improving the user experience.

[0012] Another preferred solution is that the outer periphery of the knob stator is completely covered by the knob rotor and / or the base.

[0013] As can be seen from the above, the user can hold the knob rotor to manipulate the knob stator and the knob rotor to swing around the first point, thereby realizing the key function.

[0014] Another preferred solution is that the number of buttons is at least two, and each button is used to be triggered in response to the swinging of the knob stator in different directions; it also includes a limiting mechanism, which is located between adjacent buttons and is used to limit the swinging stroke of the knob stator; under the limiting action of the limiting mechanism, the knob stator can trigger at most one button when swinging in any direction.

[0015] As can be seen from the above, this helps reduce the risk of abnormal key functions.

[0016] A further solution is that the number of buttons is at least three, and the buttons are distributed around the first axis; the number of limiting mechanisms is at least three, and the limiting mechanisms and the buttons are distributed alternately around the first axis.

[0017] A further solution is that the limiting mechanism includes a limiting column, and the limiting column extends from the knob stator to the base or from the base to the knob stator.

[0018] A further solution is that a coil spring is provided on the outer periphery of the limit column, and the coil spring is squeezed between the knob stator and the base to force the knob stator to remain in a swinging equilibrium position when it is in a free state, and the button is not triggered when the knob stator is in a free state.

[0019] Another preferred solution is to further include a return mechanism acting between the base and the knob stator, for forcing the knob stator to remain in a swinging equilibrium position when in a free state, and the button is not triggered when the knob stator is in a free state.

[0020] A further solution is that it also includes a translation mechanism; the translation mechanism is movably installed on the base along a first direction, the return mechanism acts between the base and the translation mechanism, and the translation mechanism abuts against the knob stator under the action of the return mechanism. When the knob assembly is in a free state, the first direction is parallel to the extension direction of the first axis; or the translation mechanism is movably installed on the knob stator along a second direction and can swing with the knob stator, the return mechanism acts between the knob stator and the translation mechanism, and the translation mechanism abuts against the base under the action of the return mechanism, and the first axis extends along the second direction.

[0021] As can be seen from the above, this helps to ensure that the swing balance position of the knob assembly is stable.

[0022] Another preferred solution is that the knob rotor is fixed with at least one permanent magnet, and the knob stator or the base is fixed with a magnetic sensor, which detects the rotation angle position of the knob rotor by sensing the permanent magnet; the knob stator is mounted on the base through a rotating connection, the rotating connection is rotatably mounted on the base around the second axis, and the knob stator is rotatably mounted on the rotating connection around the third axis, and the first axis, the second axis and the third axis are perpendicular to each other.

[0023] The second purpose of the present invention is to overcome the above-mentioned defects. The present invention provides an electrical appliance.

[0024] The electrical appliance provided by the utility model comprises a frame and the aforementioned knob assembly, wherein the base is fixedly arranged on the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional diagram of an embodiment of the knob assembly of the present invention.

[0026] Figure 2 A three-dimensional cross-sectional view of an embodiment of the knob assembly of the present invention Figure 1 .

[0027] Figure 3 for Figure 2 Structural diagram of the middle base.

[0028] Figure 4 This is a three-dimensional diagram of the knob assembly embodiment of the present invention with some structures hidden.

[0029] Figure 5 A three-dimensional cross-sectional view of an embodiment of the knob assembly of the present invention Figure 2 .

[0030] Figure 6 This is a schematic diagram of the feedback mechanism in a preferred embodiment of the knob assembly of the present invention. DETAILED DESCRIPTION

[0031] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the embodiments should not be construed as limiting the present invention.

[0032] In this embodiment Figures 1 to 5 A unified spatial rectangular coordinate system (right-hand system) is used to represent the relative orientation relationship between various features.

[0033] like Figures 1 to 5 As shown, the knob assembly of this embodiment includes a base 1, a knob stator 2, a button 3, a coil spring 4 (an example of a return mechanism), a knob rotor 5 and a rotating connector 6, wherein the knob rotor 5 is sleeved on the outer periphery of the positive end of the Z-axis of the knob stator 2, and is rotatably matched with the knob stator 2 through a bearing 13. The axis of rotation of the knob rotor 5 relative to the knob stator 2 is the first axis L. When the knob assembly is in a free state (a balanced state when not operated by the user), the extension direction of the first axis L is parallel to the Z-axis direction. The user realizes the knob function by operating the knob rotor 5 to rotate relative to the knob stator 2.

[0034] The base 1 is barrel-shaped, and the center line of the base 1 extends along the Z-axis direction and coincides with the first axis L when the knob assembly is in a free state. The barrel mouth of the base 1 faces the positive direction of the Z-axis. The negative end of the knob stator 2 in the Z-axis extends into the barrel cavity of the base 1 and is installed on the base 1 so that it can swing three-dimensionally around a first point. The positive end of the knob stator 2 in the Z-axis and the knob rotor 5 are both exposed on the positive side of the Z-axis of the base 1.

[0035] Specifically, the base 1 includes a barrel side wall plate 101 and a barrel bottom wall plate 102. The barrel side wall plate 101 and the barrel bottom wall plate 102 are each an integrally formed structure. The barrel side wall plate 101 and the barrel bottom wall plate 102 are fixedly connected by gluing. The barrel side wall plate 101 includes a cylindrical main body 112 and an annular inner bearing platform 111 and an outer lap platform 113. The center lines of the cylindrical main body 112, the inner bearing platform 111 and the outer lap platform 113 all coincide with the center line of the base 1. The inner bearing platform 111 protrudes from the Z-axis negative end of the cylindrical main body 112 toward the inside of the barrel, and the outer lap platform 113 protrudes from the Z-axis positive end of the cylindrical main body 112 toward the outside of the barrel; the barrel bottom wall plate 102 includes a circular plate-shaped main body 121, The annular overlapping portion 122 and the supporting portion 123, the center lines of the circular plate-shaped main body 121 and the annular overlapping portion 122 both coincide with the center line of the base 1, the Z-axis negative end of the inner ring of the annular overlapping portion 122 is connected to the Z-axis positive end of the outer edge of the circular plate-shaped main body 121, the annular overlapping portion 122 overlaps the Z-axis positive side wall surface of the inner supporting platform 111, the outer peripheral surface of the circular plate-shaped main body 121 cooperates with the inner peripheral surface of the inner supporting platform 111, the Z-axis negative side main surface of the circular plate-shaped main body 121 is flush with the Z-axis negative side main surface of the inner supporting platform 111, the supporting portion 123 is connected to the Z-axis positive side main surface of the circular plate-shaped main body 121 and protrudes toward the positive direction of the Z axis, and the supporting portion 123 is used to install the knob stator 2.

[0036] The knob stator 2 is mounted on the support portion 123 through the rotating connector 6. The rotating connector 6 is rotatably mounted on the support portion 123 around the second axis. The knob stator 2 is rotatably mounted on the rotating connector 6 around the third axis. The first axis L, the second axis and the third axis are perpendicular to each other and intersect with each other. The first point is the intersection of the first axis L, the second axis and the third axis, so as to achieve the purpose of three-dimensional swing of the knob stator 2 around the first point relative to the base 1; when the knob assembly is in a free state, the second axis extends along the X-axis direction and the third axis extends along the Y-axis direction.

[0037] Specifically, the knob stator 2 includes a lower bracket 201 and an upper bracket 202. The negative end of the upper bracket 202 is fixedly connected to the positive side of the Z axis of the lower bracket 201 by a screw. The lower bracket 201 has an end face facing the negative direction of the Z axis at the negative end of the Z axis, and has a connecting portion 211 protruding from the end face of the negative end of the Z axis toward the negative direction of the Z axis (the negative direction of the Z axis when the knob assembly is in a free state). The connecting portion 211 is rotatably mounted on the rotating connection 6 through the pin 7. The rotating connection 6 is rotatably connected to the support portion 123 through the rotating shafts 601 at both ends of its X axis. The center line of the pin 7 is the third axis, and the center line of the rotating shaft 601 is the second axis.

[0038] The number of buttons 3 in this embodiment is four, and all are located between the base 1 and the knob stator 2. The four buttons 3 are distributed around the first axis L, and each button 3 is triggered in response to the swinging of the knob stator 2 in different directions; optionally, in other embodiments of the present invention, the number of buttons can also be 3, 5, etc.

[0039] Specifically, a first circuit board 8 is fixedly provided on the base 1. The first circuit board 8 is a circular circuit board whose center line coincides with the base 1. The first circuit board 8 is fixedly connected to the positive end face of the circular overlapping portion 122 on the Z axis. Each button 3 is located on the main surface of the positive side of the Z axis of the first circuit board 8. The four buttons 3 are respectively located on the positive side of the X axis, the negative side of the X axis, the positive side of the Y axis and the negative side of the Y axis of the first axis L. The end face of the negative end of the Z axis of the lower bracket 201 has four pressing portions 212 protruding toward the negative direction of the Z axis. Each pressing portion 212 is distributed around the first axis L and corresponds to each button 3 one by one. Each pressing portion 212 is opposite to the corresponding button 3 along the Z axis direction. When the knob stator 2 swings toward the positive direction of the X axis, the negative direction of the X axis, the positive direction of the Y axis or the negative direction of the Y axis, the pressing portion 212 in the corresponding direction triggers the corresponding button 3.

[0040] Preferably, the end face of the negative end of the Z axis of the lower bracket 201 is also provided with four limiting posts 213 (an example of a limiting structure) protruding toward the negative direction of the Z axis, and each limiting post 213 and each pressing portion 212 are alternately distributed around the first axis L, and the central angle span of adjacent limiting posts 213 and pressing portions 212 in the circumferential direction of the knob assembly is 45 degrees. The limiting posts 213 are used to limit the swing stroke of the knob stator 2 so that when the embodiment swings in any direction, at most only one button 3 can be triggered; specifically, when the limiting posts 213 of this embodiment are not provided, when the user manipulates the knob stator 2 and the knob rotor When the knob stator 2 and the knob rotor 5 are swung in a direction that includes an angle of 45 degrees with both the X-axis direction and the Y-axis direction, it may trigger both the button 3 in the X-axis direction and the button 3 in the Y-axis direction. However, after the limiting post 213 of this embodiment is provided, when the user manipulates the knob stator 2 and the knob rotor 5 to swing in a direction that includes an angle of 45 degrees with both the X-axis direction and the Y-axis direction, the knob stator 2 cannot trigger any button 3 because the swinging stroke is limited by the limiting post 213. Under the limiting effect of the limiting post 213, the knob stator 2 of this embodiment can trigger the button 3 in the corresponding direction only when it is swung roughly in the X-axis direction or the Y-axis direction.

[0041] The coil spring 4 is sleeved on the outer circumference of the limiting column 213, and the coil spring 4 is squeezed between the knob stator 2 and the base 1. Specifically, the positive end of the coil spring 4 on the Z axis abuts against the end face of the negative end of the knob stator 2 on the Z axis, and the negative end of the coil spring 4 on the Z axis abuts against the main surface of the positive side of the first circuit board 8 on the Z axis; when the knob assembly is in a free state (the knob assembly in the illustrated state is in a free state), the knob stator is maintained in a swinging equilibrium position under the squeezing action of the four coil springs 4, and at this time, none of the buttons 3 are triggered.

[0042] Optionally, in other embodiments of the present invention, other elastic structures such as springs and silicone pads can be used as return mechanisms. As long as the return mechanism is squeezed between the base and the knob stator, the knob stator can be kept in a swinging equilibrium position without triggering any button in a free state, thereby achieving the purpose of the present invention. Similarly, other structures can be used as limiting structures, and the limiting structure can also be fixed on the base.

[0043] More preferably, a translation mechanism (not shown in the figure) is movably mounted on the base 1 along the Z-axis direction, and the translation mechanism is squeezed between the coil spring 4 and the lower bracket 201. Under the squeezing action of the coil spring 4, the positive end of the translation mechanism in the Z-axis abuts against the end face of the negative end of the Z-axis of the lower bracket 201; in this way, when the knob assembly is in a free state, the knob stator 2 is maintained in a swinging equilibrium position under the squeezing action of the translation mechanism, and since the translation mechanism is movably mounted on the base 1 along the Z-axis direction, the translation mechanism will not deflect relative to the base 1, and thus the posture of the knob stator 2 will not be deflected due to changes in the properties of the coil spring 4, which is conducive to ensuring the accuracy and stability of the swinging equilibrium position (in the solution where the knob stator 2 is maintained in the swinging equilibrium position under the direct squeezing action of the coil spring 4, if the coil spring 4 is installed incorrectly, fatigue If the properties of factors such as the above change, the knob stator 2 may be subjected to uneven force at the preset swinging balance position, resulting in the knob stator 2 being skewed in its natural state); for example, the translation mechanism is an integrally formed circular ring plate, and the outer peripheral wall of the translation mechanism is slidably matched with the inner peripheral wall of the barrel side wall plate 101 along the z-axis direction, and the z-axis positive ends of the four coil springs 4 are all in contact with the z-axis negative end face of the translation mechanism. Under the extrusion of the coil spring 4, the Z-axis positive end face of the translation mechanism is in contact with the Z-axis negative end face of the lower bracket 201. Under the cooperation of the inner peripheral wall of the barrel side wall plate 101 and the outer peripheral wall of the translation mechanism, the translation mechanism will not be skewed in its posture. In this way, when the properties of the four coil springs 4 are inconsistent, the knob stator 2 can still be accurately and stably maintained in the swinging balance position in a free state through the translation mechanism.

[0044] Optionally, in other embodiments of the present invention, the translation mechanism can also be movably installed on the lower bracket along the extension direction of the first axis, and the translation mechanism can be abutted against the second circuit board (or directly abutted against the base) under the squeezing action of the spiral compression spring. This is also conducive to ensuring that the knob stator is more accurately and stably maintained in the swinging balance position in the free state.

[0045] In this embodiment, both the swing button function and the knob function are realized by the user holding the knob rotor 2 to operate, which is convenient for user operation and improves user experience.

[0046] Preferably, please refer to Figure 6 In other embodiments of the present invention, a feedback mechanism for generating setback damping is provided between the knob rotor 5a and the knob stator. Specifically, the feedback mechanism includes a ring gear structure 502a formed on the knob rotor 5a and a spring plunger 13a fixedly mounted on the knob stator (the head of the spring plunger 13a is retractable and movable). The center line of the ring gear structure 502a coincides with the first axis. The head of the spring plunger 13a contacts and presses on the toothed surface of the ring gear structure 502a under the action of elastic force. In the process of rotation of the knob rotor 5a relative to the knob stator, the raised portion and the recessed portion of the ring gear structure 502a alternately contact the head of the spring plunger 13a, thereby generating a jerky damping feedback sense. In this way, when the user does not use the knob function (does not operate the knob rotor 5a to rotate), the head of the spring plunger 13a is restricted to the wavy tooth-shaped recessed portion, so that the knob rotor 5a and the knob stator can be kept in a relatively stable state of relative stillness, so that the user can use the swing button function (operate the knob rotor 5a and the knob stator to swing) while holding the knob rotor 5a. When the knob rotor 5a is turned, it is not easy to cause abnormal rotation of the knob rotor 5a relative to the knob stator, which is beneficial to reducing misoperation and improving user experience. In this embodiment, the head of the spring plunger 13a constitutes a touch-pressure structure. The head of the spring plunger 13a touches and presses on the tooth surface of the ring gear structure 502a under the action of elastic force. In other embodiments of the present invention, other structures can be used as touch-pressure structures. For example, the spring bar in the Chinese utility model patent with publication number CN219105996U and name "Integrated Pressable Waterproof Button with Screen and Electrical Appliance" is used as the touch-pressure structure. The spring bar in this patent touches and presses on the ring gear (ring gear structure), and magnetic force can also be used to make the touch-pressure structure touch and press on the ring gear structure. For example, two mutually repelling magnets are respectively fixed on two structures that slide relatively together, and one of the two structures is fixed to the knob stator, and the other structure (touch-pressure structure) touches and presses on the ring gear structure under the action of the repulsive force of the magnet.

[0047] Alternatively, in other embodiments of the present invention, a magnet group can also be used as a feedback mechanism, for example, a first magnet is fixed on the knob stator, and a second magnet is fixed on the knob rotor, the number of the first magnets is a plurality distributed along the circumference of the knob, and in the process of the knob rotor rotating relative to the knob stator, the second magnet approaches and moves away from each first magnet in turn, thereby generating a periodically enhanced and weakened magnetic force, generating a jerky damping feedback, and when the knob rotor is stationary relative to the knob stator, the second magnet is opposite to and attracted to one of the first magnets, which is beneficial when the user is not using the knob function. The knob rotor and the knob stator can remain relatively stationary under the action of the attraction of the first magnet and the second magnet, so that when the user holds the knob rotor and uses the swing button function, it is not easy for the knob rotor to rotate abnormally relative to the knob stator, which is beneficial to reduce misoperation and improve user experience.

[0048] This embodiment uses a combination of an annular magnet 11 (an example of a permanent magnet) and a magnetic sensor 12 to detect the rotational position of the knob rotor 5 relative to the knob stator 2. The annular magnet 11 is fixed to the knob rotor 5, and the center line of the annular magnet 11 coincides with the first axis L. The magnetic sensor 12 is fixed to the knob stator 2. The magnetic sensor 12 detects the rotational position of the knob rotor 5 relative to the knob stator 2 by sensing the annular magnet 11. Specifically, in this embodiment, the knob stator 2 is fixed with a second circuit board 9, and the second circuit board 9 is located at the positive end of the Z axis of the upper bracket 202. The magnetic sensor 12 is fixed on the second circuit board 9, and the first axis L passes through the magnetic sensor 12. Of course, in other embodiments of the present invention, the specific scheme of using a combination of a permanent magnet and a magnetic sensor to detect the rotational position can also be set up with reference to the existing technology, which will not be repeated here. In addition, the rotational position of the knob rotor relative to the knob stator can also be detected by other methods, such as using an optical encoder, a potentiometer, etc.

[0049] Specifically, a display screen 10 is also fixed on the knob stator 2. The display screen 10 is located on the positive side of the Z axis of the second circuit board 9. It displays the working status of the knob assembly (for example, it is used to display the rotation position of the knob rotor 5 relative to the knob stator 2, and to display the pressing status of each button 3).

[0050] In this embodiment, the installation and matching methods of the knob stator 2, knob rotor 5, second circuit board 9, display screen 10, etc. can also be set with reference to the existing technology. For example, they can be set with reference to the Chinese utility model with publication number CN219122611U and name "Magnetic induction knob and electrical appliance with button function", which will not be repeated here.

[0051] Unless otherwise specified, the description of the orientation of each feature in this embodiment is based on the situation where the knob assembly is in a free state (at this time, the knob stator 2 is in a swinging equilibrium position, and the first axis L is along the Z-axis direction). After the knob stator 2 swings relative to the base 1, the orientation of each feature on the knob stator 2 and the knob rotor 5 may change slightly.

[0052] The electrical appliance of this embodiment can be, for example, a refrigerator, a washing machine, an air conditioner, or the like. The electrical appliance of this embodiment includes a frame and a knob assembly of this embodiment. The base is fixed to the frame. Specifically, a mounting circular hole is opened on the outer shell of the frame, the base 1 is passed through the mounting circular hole, the outer overlapping platform 113 overlaps the surface of the outer shell, and the Z-axis positive end of the knob stator 2 and the knob rotor 5 are both located on the outside of the outer shell.

[0053] The above embodiments are merely intended to provide a detailed description of the technical solutions of the present invention. The above embodiments are merely intended to facilitate understanding of the methods and core concepts of the present invention and should not be construed as limiting the present invention. Any changes or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein are intended to fall within the scope of protection of the present invention.

Claims

1. A knob assembly, comprising: Knob stator; A knob rotor is rotatably mounted on the knob stator around a first axis; It is characterized by further comprising: a base, the knob stator being mounted on the base so as to be three-dimensionally swingable about a first point, and the knob rotor being exposed outside the base; A button is installed between the base and the knob stator and is used to be triggered in response to the swing of the knob stator.

2. The knob assembly according to claim 1, wherein: A feedback mechanism for generating setback damping is provided between the knob rotor and the knob stator.

3. The knob assembly according to claim 2, wherein: The feed mechanism includes a ring gear structure and a touch-pressure structure. One of the knob stator and the knob rotor is provided with the ring gear structure, and the other is provided with a movable touch-pressure structure. The center line of the ring gear structure coincides with the first axis, and the touch-pressure structure abuts against the toothed surface of the ring gear structure under the action of elastic force or magnetic force. Alternatively, the feed mechanism includes a first magnet and a second magnet that attract each other, the first magnet is fixed to the knob stator, the second magnet is fixed to the knob rotor, and at least one of the first magnet and the second magnet has multiple circumferentially distributed along the knob assembly.

4. The knob assembly according to claim 1, wherein: There are at least two buttons, each of which is configured to be triggered in response to the knob stator swinging in different directions; It also includes a limiting mechanism, which is located between adjacent buttons and is used to limit the swing stroke of the knob stator; Under the limiting action of the limiting mechanism, the knob stator can trigger at most one of the buttons when it swings in any direction.

5. The knob assembly according to claim 4, wherein: The number of the buttons is at least three, and the buttons are distributed around the first axis; There are at least three limiting mechanisms, and the limiting mechanisms and the buttons are alternately distributed around the first axis; The first point is located on the first axis; The outer circumference of the knob stator is fully covered by the knob rotor and / or the base.

6. The knob assembly according to claim 4, wherein: The limiting mechanism includes a limiting post, and the limiting post extends from the knob stator to the base or from the base to the knob stator; A coil spring is sleeved around the outer periphery of the limiting column, and the coil spring is squeezed between the knob stator and the base to force the knob stator to remain in a swinging equilibrium position when in a free state. The button is not triggered when the knob stator is in a free state.

7. The knob assembly according to any one of claims 1 to 5, characterized in that: It also includes a return mechanism, which acts between the base and the knob stator and is used to force the knob stator to remain in a swinging equilibrium position when it is in a free state. The button is not triggered when the knob stator is in a free state.

8. The knob assembly according to claim 7, wherein: Also included is a translation mechanism; The translation mechanism is movably mounted on the base along a first direction, the return mechanism acts between the base and the translation mechanism, and the translation mechanism abuts against the knob stator under the action of the return mechanism. When the knob assembly is in a free state, the first direction is parallel to the extension direction of the first axis; Alternatively, the translation mechanism is movably mounted on the knob stator along the second direction and can swing along with the knob stator. The return mechanism acts between the knob stator and the translation mechanism. The translation mechanism abuts against the base under the action of the return mechanism, and the first axis extends along the second direction.

9. The knob assembly according to any one of claims 1 to 6, wherein: The knob rotor is fixed with at least one permanent magnet, and the knob stator or the base is fixed with a magnetic sensor, and the magnetic sensor detects the rotation angle position of the knob rotor by sensing the permanent magnet; The knob stator is mounted on the base via a rotating connector, the rotating connector is rotatably mounted on the base around a second axis, the knob stator is rotatably mounted on the rotating connector around a third axis, and the first axis, the second axis and the third axis are perpendicular to each other.

10. An electrical appliance, including a frame, characterized in that: It also includes the knob assembly according to any one of claims 1 to 9, wherein the base is fixed to the frame.

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