CN116820183A - Knobs and electrical appliances with rotary feedback - Google Patents

Abstract

The invention relates to the field of knobs, and provides a knob and an electrical appliance with a rotation feedback sense. The knob includes a stator component and a rotor component; the rotor component is fixed with a multi-pole magnetic ring, and the stator component is movably equipped with a magnetic body and the multi-pole magnetic ring. The center line of the multi-pole magnetic ring coincides with the rotation axis of the rotor component; the magnetic body is in the shape of a rolling body, the magnetization direction of the magnetic body is along its radial direction, and the first position of the multi-pole magnetic ring is adjacent to one side of the magnetic body along its radial direction; the multi-pole Each magnetic pole of the magnetic ring passes through the first position in sequence during the rotation of the rotor component relative to the stator component. When each magnetic pole of the multi-pole magnetic ring passes through the first position, the magnetic body moves from the first position to the first position under the action of the magnetic force between the multi-pole magnetic ring and the multi-pole magnetic ring. The attitude of the same magnetic poles at one position repels each other and is rotated and switched to the attitude of attracting the opposite magnetic poles at the first position, and after the attitude switching, it collides with the rotor component and remains in contact. The knob of the present invention can produce a frustrating feel and a clicking sound when the user turns it.

Description

Knobs and electrical appliances with rotary feedback

Technical field

The invention relates to the field of knobs, and in particular to a knob and an electrical appliance with a rotation feedback feel.

Background technique

The knob generally includes a stator component and a rotor component rotatably mounted on the stator component. The user inputs control instructions by rotating the rotor component.

In some usage scenarios, it is expected that the knob will periodically generate a rotational feedback feeling such as vibration and sound at a certain frequency during the rotation of the rotor component. There are two common types of feedback generation methods. The first type is on the rotor component. One of the stator components is provided with a ring gear with teeth distributed along the circumference of the knob, and the other is equipped with an elastic mechanism (such as a spring piece, a spring plunger, etc.), which contacts the ring gear 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. Therefore, the rotation resistance of the rotor component will rise and fall periodically, which will produce an obvious frustrating feel, and the elastic mechanism will pass over a tooth. Then it will collide with the next tooth, resulting in an obvious clicking sound.

However, on the one hand, the cooperation between the ring gear and the elastic mechanism may cause the rotation of the rotor component to become stuck. On the other hand, due to the setting of the elastic mechanism, the knob may become fatigued and have weakened elasticity after long-term use due to the elastic mechanism. As a result, the rotational feedback sense is weakened, and it is not easy to ensure that the rotational feedback sense of this type remains consistent for a long time.

The second type, for example, the Chinese utility model patent with publication number CN209373462U, in which magnetic bodies are fixed on the rotor part and the stator part respectively, where the magnetic bodies on the rotor part or the magnetic bodies on the stator part are arranged to be distributed along the circumference of the knob. When the user operates the rotor component to rotate, the magnetic body on the rotor component passes by the magnetic body on the stator component in sequence. Since the magnetic body on the rotor component periodically approaches and moves away from the magnetic body on the stator component, This causes the rotational resistance of the rotor component to rise and fall periodically, resulting in a frustrating feel, and because this method is generally less likely to cause mechanism collision during the rotation of the rotor component, it is difficult to produce an obvious rattling sound.

Contents of the invention

One of the objects of the present invention is to provide a new type of knob with a rotational feedback feel.

The knob with rotation feedback provided by the present invention includes a first component and a second component that is rotatable relative to the first component. One of the first component and the second component is a stator component, and the other is a rotor component; the first component is fixed There is a multi-pole magnetic ring, and the second component is movably equipped with a magnetic body. The center line of the multi-pole magnetic ring coincides with the rotation axis of the rotor component; the magnetic body is in the shape of a rolling body, and the south pole and north pole of the magnetic body are distributed in the circumferential direction. ; Each magnetic pole of the multi-pole magnetic ring passes through the first position in sequence during the relative rotation of the first component and the second component. The first position is adjacent to one side of the magnetic body along its radial direction. When passing through the first position, the magnetic body rotates and switches from the attitude of repelling the same magnetic poles at the first position to the attitude of attracting the opposite magnetic poles at the first position under the magnetic force of the multi-pole magnetic ring, and in the attitude After switching, it collides with the first component or the second component and remains in contact.

It can be seen from the above that when the user rotates the rotor component of the knob of the present invention, due to the periodic switching of the magnetic force type (switching between repulsion and attraction) between the multipolar magnetic ring and the magnetic body, the resistance of the rotor component will occur. Periodic fluctuations, so the user can feel the frustration when twisting the rotor component, and because each magnetic pole of the multi-pole magnetic ring passes the first position, the magnetic body will collide with the first component or the second component. , so a rattling sound will also be produced due to collision. The knob of the present invention has a good rotation feedback feeling.

In addition, since the magnetic body of the present invention will move to switch the orientation of the magnetic poles before colliding with the multi-pole magnetic ring, the magnetic body has sufficient kinetic energy when colliding with the first component or the second component, which is beneficial to reducing the rattling sound. It is more obvious, and compared with other solutions that generate collision kinetic energy by moving, swinging, etc. the magnetic body relative to the second component, the magnetic body of the present invention only needs an activity space slightly larger than its volume to be able to move smoothly and generate sufficient kinetic energy. To meet the energy requirements of collision, the magnetic body occupies less space for movement, and the structure of the knob is more compact, which is more conducive to the miniaturization of the design of the knob.

In addition, compared with the first type of existing solutions, the knob of the present invention does not need to use an elastic mechanism and a ring gear to achieve rotational feedback, so it is not prone to problems such as rotational stagnation and elastic mechanism fatigue, and is relatively Compared with the second type of existing solutions, the present invention can produce two types of feedback sensations, namely a squelching feel and a clicking sound, due to the magnetic force between the magnetic body and the multi-pole magnetic ring, and the effect of the rotational feedback sensation is better.

The rolling element shape is a shape that is conducive to rolling, and its cross-sectional outer contour is a circular or nearly circular shape, such as an ellipse with the long and short axis lengths close to each other, or a shape with surface treatment based on a circle.

A preferred solution is that when the first component rotates relative to the second component until the south pole of the multi-pole magnetic ring passes the first position, the magnetic body switches from rotating from its south pole towards the first position to rotating from its north pole towards the first position; the magnetic body first Under the repulsive force between its south pole and the south pole of the multi-pole magnetic ring, it moves in a direction away from the first position, and disengages from the first component or the second component on the side facing the first position, and finally contacts the multi-pole magnetic ring at its north pole. The magnetic ring moves toward the first position under the attraction of the south pole of the magnetic ring, and re-maintains contact after the side toward the first position collides with the first component or the second component.

Another preferred solution is that the magnetic poles of the magnetic body only have one south pole and one north pole distributed along its radial direction.

It can be seen from the above that every time the magnetic poles of the multi-pole magnetic ring rotate through the first position, the magnetic body will rotate 180 degrees. The magnetic body is affected by the magnetic force and rotates to switch the direction of the magnetic poles. The rotation arc is larger. Under the action of the magnetic force, The longer the acceleration period, the easier it is to obtain greater kinetic energy, and it is easier to achieve the kinetic energy intensity required for collision.

Another preferred solution is that the magnetic body is cylindrical or spherical.

Another preferred solution is that the magnetic body maintains contact with the multi-pole magnetic ring after collision.

It can be seen from the above that in this way, the distance between the magnetic body and the multi-pole magnetic ring is the closest, the magnetic force between the magnetic body and the multi-pole magnetic ring is the strongest, and the magnetic body is more likely to move quickly under the action of the magnetic force, thereby connecting with the first component at a faster speed. Or the collision of the second part is conducive to producing a louder sound.

Another preferred solution is that the magnetic body includes permanent magnets and a protective structure fixed to each other, and the protective structure is provided on the outer surface of the magnetic body.

It can be seen from the above that this will help reduce the risk of permanent magnet damage by direct collision.

Another preferred solution is that the second component has an accommodating cavity, the magnetic body is movably placed in the accommodating cavity, and there is a movable gap between the peripheral wall of the magnetic body and the cavity wall of the accommodating cavity; between the first component and the third During the relative rotation of the two parts, the magnetic body collides with the wall of the accommodation cavity on the side facing the first position; or the accommodation cavity has an opening facing the first part, and when the first part and the second part rotate relative to each other, the magnetic body collides with the wall of the accommodation cavity. During the process, the magnetic body extends through the opening on the side facing the first position until it collides with the first component.

It can be seen from the above that the installation of the magnetic body only needs to be placed in the accommodation cavity, and the installation difficulty of the magnetic body is relatively low.

A further solution is that the magnetic body and the first position are distributed along the horizontal direction, the center line of the magnetic body is along the vertical direction, the lower end surface of the magnetic body and the bottom wall surface of the accommodation cavity are both planes, and the lower end surface of the magnetic body is in contact with the accommodation cavity. The bottom wall of the cavity is a sliding fit.

It can be seen from the above that this is beneficial to reducing the influence of gravity on the movement of magnetic bodies.

A further solution is that the magnetic body and the first position are distributed along the first direction, and there is a movable gap between the magnetic body and the cavity wall of the accommodation cavity along the first direction; the magnetic body is limited to be along the cavity wall of the accommodation cavity. The first direction is slidably engaged.

It can be seen from the above that this is not only conducive to ensuring that the magnetic body completes the conversion of the magnetic pole orientation and completes the collision with the first component or the second component, but also helps to make the movement pattern of the magnetic body as stable as possible and ensure the rotation feedback of the knob. Feel more stable.

Another preferred solution is that the arc length span size of a single magnetic pole of the multi-pole magnetic ring corresponding to the outer contour of the rotor component is 2 mm to 3 mm.

Another preferred solution is that the diameter of the magnetic body is less than 1.5 times the arc length span size of a single magnetic pole in the multi-pole magnetic ring.

Another preferred solution is that the diameter of the magnetic body is greater than or equal to 1/2 of the arc length span size of a single magnetic pole in the multi-pole magnetic ring.

Another preferred solution is that the multi-pole magnetic ring is fixed on the rotor component, and the stator component is also fixed with a magnetic sensor for sensing the multi-pole magnetic ring. The magnetic sensor detects the rotation of the rotor component by sensing the multi-pole magnetic ring.

A second object of the present invention is to provide an electrical appliance, which includes a casing and any one of the aforementioned knobs with a sense of rotation, and the knob is mounted on the casing through a stator component.

Description of the drawings

Figure 1 is a perspective view of an embodiment of a knob with rotation feedback according to the present invention.

Figure 2 is a perspective cross-sectional view of an embodiment of a knob with rotation feedback according to the present invention.

FIG. 3 is a second perspective cross-sectional view of an embodiment of a knob with rotation feedback according to the present invention.

Figure 4 is an exploded view of an embodiment of a knob with rotation feedback according to the present invention.

Figure 5 is an exploded view of the second embodiment of the knob with rotation feedback according to the present invention.

Detailed ways

Figures 1 to 5 of this embodiment adopt a unified spatial rectangular coordinate system (right-handed system) to identify the relative positional relationship between features, where the Y-axis direction is the first direction, and the Z-axis direction is the vertical direction. The positive Z-axis direction is vertically upward.

The electrical appliance in this embodiment can be, for example, a refrigerator, a washing machine, an air conditioner, etc. The electrical appliance includes a casing and a knob with a rotation feedback sense in this embodiment. The knob is installed on the casing through a stator component. For example, the base 11 described later is mounted on the casing through screws. , glue and other forms to fix it on the casing.

Please refer to Figures 1 to 5. The knob with rotation feedback in this embodiment includes a stator component 1 (an example of the second component), a rotor component 2 (an example of the first component) that can rotate relative to the stator component 1, and a movable The columnar magnet 3 (an example of a magnetic body) is firmly installed on 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 and the lifting bracket 12 And the display modules 13 are sequentially distributed along the positive direction of the Z-axis, and their main body outlines are all disk-shaped. The center lines of the main body outlines of the base 11, the lifting bracket 12, and the display module 13 are all along the Z-axis direction and are aligned with the rotor. The axes of rotation of components 2 coincide.

The lifting bracket 12 is movably installed on the Z-axis positive side of the base 11 along the Z-axis direction. The display module 13 is fixedly connected to the Z-axis positive side of the lifting bracket 12. The rotor component 2 surrounds 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 and a snap-in hole 112 extending along the Z-axis direction, and a first protection cylinder 113 extending in the positive direction of the Z-axis. The guide hole 111 and the snap-in hole 112 are located on the first protection cylinder 113 . Radially on the inner side, the lifting bracket 12 has a guide column 121 extending from the Z-axis negative side wall to the Z-axis negative direction, an elastic clamping foot 122 and a second protection cylinder 123. The guide column 121 and the elastic clamping foot 122 are located on the second protection cylinder. Radially inside the cylinder 123, the center line of the first protection cylinder 113, the center line of the second protection cylinder 123 and the rotation axis of the rotor component 2 coincide with each other.

The second protection cylinder 123 surrounds the radial outside of the first protection cylinder 113. There is a distance between the second protection cylinder 123 and the first protection cylinder 113. The Z-axis negative end of the elastic clamping foot 122 has a limiter. part 1221, the elastic clamping foot 122 is inserted into the clamping hole 112 along the Z-axis negative direction, the limiting part 1221 passes through the guide hole 111 and is limited to the Z-axis negative side of the guide hole 111, and the outer circumference of the guide column 121 is sleeved with The coil spring (not shown in the figure) is inserted into the guide hole 111 along the negative direction of the Z-axis. The guide post 121 slides with the hole wall of the guide hole 111. The negative end of the coil spring in the Z-axis contacts the base 11. The coil spring The positive end of the Z-axis contacts the lifting bracket 12 , and the elastic force of the coil spring forces the limiting portion 1221 to contact the opening of the negative Z-axis end of the guide hole 111 .

In this embodiment, a coil spring sleeved on the outer periphery of the guide column 121 is used to provide the lifting bracket 12 with a restoring force along the positive direction of the Z-axis, so that the lifting bracket 12 can move toward the positive direction of the Z-axis under the restoring force of the coil spring after being pressed. To reset, optionally, in other embodiments of the present invention, other types of return mechanisms can also be used to provide a return force for the lifting bracket 12. For example, the return mechanism can also be a Z-axis positive contact with the base 11. The single coil spring in the middle of the side wall and the Z-axis negative direction of the lifting bracket 12 is either a spring piece fixed to the lifting bracket 12 and abutting the base 11, or a spring piece fixed to the base 11 and abutting the lifting bracket 12. The elastic pieces of the bracket 12 may be mutually exclusive magnets fixed to the base 11 and the lifting bracket 12 respectively.

The rotor component 2 includes a multi-pole magnetic ring 21, an inner sleeve 22 and an outer sleeve 23 which are fixedly connected in sequence from the inside to the outside in the radial direction. The inner sleeve 22 is integrally formed with a first convex ring 221 and a convex ring protruding from the inner peripheral wall. On the second convex ring 222 on the outer peripheral wall, the first convex ring 221 is located at the negative Z-axis end of the inner sleeve 22 , the second convex ring 222 is located at the middle position of the inner sleeve 22 along the Z-axis direction, and the outer sleeve 23 The positive end of the Z-axis is integrally formed with a third convex ring 231 protruding from the inner peripheral wall. The multi-pole magnetic ring 21 is fixedly embedded in the inner peripheral wall of the inner sleeve 22. The outer peripheral wall of the multi-pole magnetic ring 21 is in contact with the inner sleeve 22. The inner peripheral wall of the multi-pole magnetic ring 21 is in contact with the Z-axis positive side wall surface of the first convex ring 221, and the outer sleeve 23 is sleeved in the radial direction of the inner sleeve 22 along the Z-axis negative direction. On the outside, the Z-axis negative end of the outer sleeve 23 is in contact with the Z-axis positive side wall surface of the second convex ring 222, and the outer sleeve 23 and the inner sleeve 22 are fixedly connected by snaps.

A friction pad 14 is fixedly attached to the Z-axis positive side wall of the outer edge of the lifting bracket 12 . The friction pad 14 and the outer edge of the lifting bracket 12 are clamped between the Z-axis negative side end surface of the third flange 231 and the inner sleeve. 22, the Z-axis negative side end surface of the third convex ring 231 is in contact with the friction pad 14 and slidably fits, and the outer peripheral wall surface of the lifting bracket 12 and the inner periphery of the outer sleeve 23 The wall surfaces are slidably matched, and the inner peripheral wall surface of the first convex ring 221 is slidably matched with the outer peripheral wall surface of the second protective cylinder 123, thereby realizing the installation of the rotor component 2 on the outer periphery of the lifting bracket 12 and the rotation relative to the lifting bracket 12. Cooperation; Alternatively, in other embodiments of the present invention, a bearing may also be provided between the rotor component 2 and the lifting bracket 12 to realize the rotatable cooperation of the rotor component 2 relative to the lifting bracket 12.

The center line of the multi-pole magnetic ring 21 coincides with the rotation axis of the rotor component 2 . The stator component 1 has an accommodating cavity 17 opening in the outer peripheral wall of the second protection cylinder 123 . The accommodating cavity 17 is opposite to the diameter of the multi-pole magnetic ring 21 . To the inside, with the opening facing the multi-pole magnetic ring 21, the columnar magnet 3 is movably accommodated in the accommodation cavity 17. The columnar magnet 3 is cylindrical and its center line is parallel to the Z-axis direction. The upper and lower sides of the accommodation cavity 17 The side wall surfaces (Z-axis positive side wall surface and Z-axis negative side wall surface) are both planes with normal lines along the Z-axis direction. The upper and lower end surfaces of the cylindrical magnet 3 are slidingly matched with the upper and lower side wall surfaces of the accommodation cavity 17 respectively. There is a movable gap between the peripheral wall surface of the magnet 3 and the peripheral wall surface of the accommodation cavity 17 .

Specifically, the peripheral wall of the accommodating cavity 17 includes a front wall located on the positive side of the X-axis, a rear wall located on the negative side of the X-axis, and a left wall located on the negative side of the Y-axis. The front wall and the rear side The wall surfaces are all planes with normal lines along the X-axis direction, and the left wall surface is a plane with the normal line along the Y-axis direction. The front side wall surface and the rear side wall surface are slidably matched with the peripheral wall surface of the columnar magnet 3 respectively, and the left side wall surface is with the columnar magnet 3. There is a movable gap between the peripheral wall surfaces of the magnet 3, for example, the movable gap is 0.5 mm.

The multi-pole magnetic ring 21 is a type of existing annular magnet, which includes an equal number of south poles and north poles, and the south poles and north poles are alternately distributed along the circumferential direction.

The magnetization direction of the columnar magnet 3 is along its radial direction. When the knob is in a resting state, the outer peripheral wall of the columnar magnet 3 and the inner peripheral wall of the multipolar magnetic ring 21 remain in contact under the action of magnetic attraction (the south pole of the multipolar magnetic ring 21 and The north pole of the columnar magnet 3 is in contact, or the north pole of the multipole magnetic ring 21 is in contact with the south pole of the columnar magnet 3). Specifically, the Y-axis positive side peripheral wall of the columnar magnet 3 is in contact with the multipole magnetic ring through the opening of the accommodation cavity 17. The Y-axis positive side inner peripheral wall (radially inner wall) of 21 is in contact.

The position adjacent to the accommodating cavity 17 and the columnar magnet 3 and facing the radially outer side (the Y-axis positive side) of the accommodating cavity 17 and the columnar magnet 3 is the first position. Each magnetic pole of the multi-pole magnetic ring 21 is on the rotor. When the component 2 rotates relative to the stator component 1, it passes through the first position in sequence. When each magnetic pole of the multi-pole magnetic ring 21 passes the first position, the columnar magnet 3 moves from the first position to the first position under the magnetic force of the multi-pole magnetic ring 21. The same-pole magnetic poles at the first position rotate and switch from the repulsive posture to the opposite-pole magnetic poles at the first position, and remain in contact after colliding with the multi-pole magnetic ring 21 .

Specifically, when the rotor component 2 rotates until the south pole of the multi-pole magnetic ring 21 passes the first position (when the columnar magnet 3 is facing the radially inner side of the south pole of the multi-pole magnetic ring 21 ), it is acted upon by the magnetic force of the multi-pole magnetic ring 21 Next, the columnar magnet 3 rotates from its south pole toward the first position and switches from its north pole toward the first position. In this process, the columnar magnet 3 first interacts with the south pole under the repulsive force between its south pole and the south pole of the multi-pole magnetic ring 21 . The multi-pole magnetic ring 21 breaks away from contact and moves in the direction away from the first position (negative direction of the Y-axis in the figure), and then when its magnetic pole orientation changes from the north pole to the first position, when its north pole and the multi-pole magnetic ring 21 Under the action of the suction force of the south pole of 21, it moves in the direction close to the first position (the positive direction of the Y axis in the figure) until it collides with the multi-pole magnetic ring 21 and maintains contact again.

In the same way, when the rotor component 2 rotates until the north pole of the multi-pole magnetic ring 21 passes the first position (when the columnar magnet 3 is facing the radial inner side of the north pole of the multi-pole magnetic ring 21), it is acted upon by the magnetic force of the multi-pole magnetic ring 21. Next, the columnar magnet 3 rotates from its north pole toward the first position and switches from its south pole toward the first position. In this process, the columnar magnet 3 first interacts with the north pole under the repulsive force between its north pole and the north pole of the multi-pole magnetic ring 21. The multi-pole magnetic ring 21 breaks away from contact and moves in a direction away from the first position (negative direction of the Y-axis in the figure), and then when its magnetic pole orientation changes from its south pole to the first position, when its south pole and the multi-pole magnetic ring 21 Under the action of the suction force of the north pole of the ring 21, it moves in the direction close to the first position (the positive direction of the Y-axis in the figure) until it collides with the multi-pole magnetic ring 21 and maintains contact again.

It can be seen from the above that when the user rotates the rotor component 2 of the knob of this embodiment, due to the periodic switching of the magnetic force type (switching between repulsion and attraction) between the multipolar magnetic ring 21 and the columnar magnet 3, the rotor component 2 The resistance received will fluctuate periodically, so the user can feel the frustration when twisting the rotor component 2, and because each magnetic pole of the multi-pole magnetic ring 21 will interact with the columnar magnet 3 when it passes the first position. The collision will cause a rattling sound. The knob of this embodiment has a good rotation feedback feeling.

In addition, since the columnar magnet 3 in this embodiment will move to switch the direction of the magnetic poles before colliding with the multipolar magnetic ring 21, the columnar magnet 3 has sufficient kinetic energy when colliding with the multipolar magnetic ring 21, which is beneficial to the The clicking sound is more obvious, and compared with other solutions that generate collision kinetic energy by moving and swinging the magnetic body relative to the lifting bracket 12, the columnar magnet 3 of this embodiment only requires a slightly larger accommodation cavity 17 ( (the required activity gap is smaller), it can move smoothly to generate sufficient kinetic energy to meet the energy demand of collision. The columnar magnet 3 occupies less activity space, and the structure of the knob is more compact, which is more conducive to realizing the miniaturization design of the knob.

Specifically, the arc length of a single magnetic pole of the multi-pole magnetic ring 21 corresponding to the outer circumference of the rotor component 2 is 2 mm, so that the user will feel a click and click sound every time the rotor component 2 rotates 2 mm of arc length; Alternatively, in other embodiments of the present invention, the arc length dimension of the magnetic poles of the multi-pole magnetic ring 21 corresponding to the outer circumference of the rotor component 2 can also be other values. Of course, it is preferred that the value is 2 mm to 3 mm.

Preferably, the diameter of the cylindrical magnet 3 is equal to the arc length span size of a single magnetic pole of the multi-pole magnetic ring 21; optionally, in other embodiments of the present invention, the diameter of the cylindrical magnet can also be set to be smaller than the multi-pole magnetic ring 21. Other values that are 1.5 times the arc length span of a single magnetic pole in the multi-pole magnetic ring. This will help prevent the cylindrical magnet from being too large and inflexible in movement. Preferably, the diameter of the cylindrical magnet is greater than or equal to the arc length of a single magnetic pole in the multi-pole magnetic ring. 1/2 of the span size, which will help ensure that the rattling sound generated by the collision of the columnar magnets has sufficient intensity.

Preferably, the base 11 is also fixed with a circuit board 15. The circuit board 15 has a magnetic sensor 16 on the Z-axis positive side wall. The magnetic sensor 16 is facing the Z-axis negative side of the multi-pole magnetic ring 21, so that when the user operates When the rotor component 2 drives the multi-pole magnetic ring 21 to rotate, the rotation angle position of the rotor component 2 can be detected by the magnetic sensor 16 sensing the multi-pole magnetic ring 21, and when the user operates the lifting bracket 12 and the rotor component 2 to drive the multi-pole magnetic ring 21, the rotation angle position of the rotor component 2 can be detected. When the pole magnetic ring 21 moves in the negative direction of the Z-axis relative to the base 11, the user's pressing action can also be detected by the magnetic sensor 16 sensing the multi-pole magnetic ring 21; alternatively, in other embodiments of the present invention, the user's pressing action can also be detected. The circuit board 15 and the magnetic sensor 16 are fixedly installed on the lifting bracket 12, so that the rotation of the rotor component 2 can be detected by the magnetic sensor 16 sensing the multi-pole magnetic ring 21. Of course, the lifting bracket cannot be detected by the magnetic sensor 16. 12 The action of being pressed.

The columnar magnet 3 in this embodiment is located radially inside the multi-pole magnetic ring 21. Alternatively, in other embodiments of the present invention, the columnar magnet 3 can also be disposed on the Z-axis positive side and Z-axis of the multi-pole magnetic ring. The negative side or radial outside of the shaft.

In this embodiment, the columnar magnet 3 directly contacts and collides with the multipolar magnetic ring 21. Alternatively, in other embodiments of the present invention, a dividing wall can also be provided between the multipolar magnetic ring and the columnar magnet, such as this The partition wall is fixed on the lifting bracket and seals the Y-axis positive side (the side close to the first position) of the accommodation cavity. At this time, the partition wall constitutes the cavity wall of the accommodation cavity, or the partition wall It is fixed on the rotor component, surrounds the outer periphery of the lifting bracket, and faces the radial inner side of the multi-pole magnetic ring, so that when the multi-pole magnetic ring rotates relative to the columnar magnet, the columnar magnet contacts and collides with the partition wall.

In this embodiment, a cylindrical columnar magnet 3 is used as the magnetic body. Alternatively, in other embodiments of the present invention, rolling body-shaped magnets such as annular magnets and spherical magnets can also be used as the magnetic body, and, The magnetic body may also have multiple counter poles distributed along its circumferential direction, such as two south poles and two north poles distributed alternately along its circumferential direction. Of course, it is preferred that the magnetic body only has one south pole and two north poles distributed along its radial direction. A north pole, so that every time each magnetic pole of the multi-pole magnetic ring rotates through the first position, the magnetic body will rotate 180 degrees. The magnetic body is affected by the magnetic force and rotates to switch the direction of the magnetic pole. The rotation arc is larger, and the acceleration under the action of the magnetic force The longer the period, the easier it is to obtain greater kinetic energy, and it is easier to achieve the kinetic energy intensity required for collision.

In this embodiment, the accommodation cavity 17 is opened in the lifting bracket 12 and the columnar magnet 3 is arranged in the accommodation cavity 17 to realize the movable cooperation between the columnar magnet 3 and the lifting bracket 12. Alternatively, in other embodiments of the present invention, , the movable cooperation between the lifting bracket 12 and the magnetic body can also be achieved without placing the magnetic body in the accommodation cavity 17 . For example, the magnetic body can be made into an annular shape and placed on the outer peripheral wall of the lifting bracket 12 The mounting column extending along the Z-axis direction realizes the movable cooperation between the lifting bracket 12 and the magnetic body by movable fitting of the magnetic body on the mounting column.

In this embodiment, a single columnar magnet 3 is used as the magnetic body. Alternatively, in other embodiments of the present invention, the magnetic body can also be a combination of permanent magnets and protective shells (examples of protective structures) that are fixedly connected to each other. The protective shell surrounds the permanent magnet. In this way, on the one hand, a collision-resistant material can be used as the protective shell, which is beneficial to reducing the risk of damage to the magnetic body after multiple collisions. On the other hand, it also facilitates the movement of the lifting bracket 12 through the protective shell. For example, a mounting shaft is formed on the protective shell, and a mounting hole is formed on the lifting bracket 12 to match the mounting shaft. The mounting shaft extends into the mounting hole, and there is a movable gap between the mounting shaft and the hole wall of the mounting hole.

In this embodiment, the rotor component 2 is used as the first component, and the stator component 1 is used as the second component. The multi-pole magnetic ring 21 is fixed on the rotor component 2, and the columnar magnet 3 is movably installed on the lifting bracket 12 of the stator component 1. Alternatively, in other embodiments of the present invention, the stator component can be used as the first component, and the rotor component can be used as the second component, the magnetic body can be movably installed on the rotor component, and the multi-pole magnetic ring can be fixed Lifting bracket provided on the stator component; of course, in addition to fixing the multi-pole magnetic ring on one of the rotor component and the lifting bracket, and movably installing the columnar magnet on the other of the rotor component and the lifting bracket, there are also The multi-pole magnetic ring can be fixedly installed on one of the rotor component and the base, and the magnetic body can be movably installed on the other of the rotor component and the base.

Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications, as long as they are within the spirit of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the invention shall be included in the protection scope of the present invention.

Claims (10)

1. A knob with rotational feedback, including a first component and a second component rotatable relative to the first component. One of the first component and the second component is a stator component, and the other is a rotor component. ; Its characteristics are: The first component is fixed with a multi-pole magnetic ring, the second component is movably fitted with a magnetic body, and the center line of the multi-pole magnetic ring coincides with the rotation axis of the rotor component; The magnetic body is in the shape of a rolling body, and the south pole and north pole of the magnetic body are distributed along the circumferential direction; Each magnetic pole of the multi-pole magnetic ring passes through a first position in sequence during the relative rotation of the first component and the second component, and the first position is adjacent to one side of the magnetic body along its radial direction. , when each magnetic pole of the multi-pole magnetic ring passes the first position, the magnetic body is repelled from the same position as the magnetic pole at the first position under the action of the magnetic force of the multi-pole magnetic ring. The rotation is switched to an attitude that attracts the magnetic pole opposites at the first position, and after the attitude is switched, it collides with and remains in contact with the first component or the second component. 2. The knob according to claim 1, characterized in that: When the first component rotates relative to the second component until the south pole of the multi-pole magnetic ring passes the first position, the magnetic body switches from its south pole toward the first position to its north pole orientation. the first position; The magnetic body first moves in a direction away from the first position under the repulsive force between its south pole and the south pole of the multi-pole magnetic ring, and interacts with the first component or the first component on the side facing the first position. The second component breaks away from contact, and then moves in a direction closer to the first position under the action of the attraction between its north pole and the south pole of the multi-pole magnetic ring, and interacts with the side on the side facing the first position. The first component or the second component regains contact after collision. 3. The knob according to claim 1, characterized in that: The magnetic poles of the magnetic body only have one south pole and one north pole distributed along its radial direction; The magnetic body is cylindrical or spherical; The magnetic body maintains contact with the multi-pole magnetic ring after collision; The magnetic body includes a permanent magnet and a protective structure fixed to each other, and the protective structure is provided on the outer surface of the magnetic body. 4. The knob according to claim 1, characterized in that: The second component has an accommodation cavity, the magnetic body is movably placed in the accommodation cavity, and there is a movable gap between the peripheral wall of the magnetic body and the cavity wall of the accommodation cavity; During the relative rotation of the first component and the second component, the magnetic body collides with the cavity wall of the accommodation cavity on the side facing the first position; Alternatively, the accommodating cavity has an opening toward the first component, and during the relative rotation of the first component and the second component, the magnetic body passes through certain positions on the side facing the first position. The opening extends to collide with the first component. 5. The knob according to claim 4, characterized in that: The magnetic body and the first position are distributed along the horizontal direction, the center line of the magnetic body is along the vertical direction, the lower end surface of the magnetic body and the bottom wall surface of the accommodation cavity are both plane, and the magnetic body The lower end surface of the body is slidably matched with the bottom wall surface of the accommodation cavity. 6. The knob according to claim 4, characterized in that: The magnetic body and the first position are distributed along a first direction, and along the first direction, there is a movable gap between the magnetic body and the cavity wall of the accommodation cavity; The magnetic body is constrained to slidably cooperate with the cavity wall of the accommodation cavity along the first direction. 7. The knob according to any one of claims 1 to 6, characterized in that: The arc length span dimension of a single magnetic pole of the multi-pole magnetic ring corresponding to the outer contour of the rotor component is 2 mm to 3 mm. 8. The knob according to any one of claims 1 to 6, characterized in that: The diameter of the magnetic body is less than 1.5 times the arc length span size of a single magnetic pole in the multi-pole magnetic ring, and is greater than or equal to 1/2 of the arc length span size of a single magnetic pole in the multi-pole magnetic ring. 9. The knob according to any one of claims 1 to 6, characterized in that: The multi-pole magnetic ring is fixed on the rotor component, and the stator component is also fixed with a magnetic sensor for sensing the multi-pole magnetic ring. The magnetic sensor detects the multi-pole magnetic ring by sensing the multi-pole magnetic ring. Rotation of the rotor components. 10. Electrical appliances, including cabinets, characterized by: It also includes the knob with rotation feedback as claimed in any one of claims 1 to 9, wherein the knob is installed on the casing through the stator component.