CN117850536A - Knob device and household appliance - Google Patents

Abstract

The application relates to a knob device and tame electric installation, knob device is used for assembling in the outside of the fixed panel of tame electric installation, and knob device includes: a base configured to be detachably attached to an outer side of the fixed panel and capable of maintaining a fixed state with respect to the fixed panel; the rotating body is arranged on the seat body and can rotate relative to the seat body; wherein, the seat body can apply the damping force opposite to the rotation direction to the rotating body when the rotating body rotates relative to the seat body. The knob device of this application sets up through the cooperation of pedestal, spiral body and household electrical appliances's fixed panel, when making things convenient for the clean household electrical appliances's of user fixed panel, knob device still has the use feel of preferred, can bring good operation sense of touch feedback for the user.

Description

Knob device and household appliance

Technical Field

The application relates to the technical field of household appliances, in particular to a knob device and a household appliance.

Background

At present, a knob disposed on a household appliance is generally a mechanical knob, and the mechanical knob needs to be perforated on a panel of the household appliance, so that a knob cap is mechanically connected with a rotating shaft inside the panel.

However, in the household electrical appliance equipped with the mechanical knob, the tightness between the rotating shaft and the connecting hole is poor, impurities such as dust and greasy dirt easily enter the connecting hole, and the household electrical appliance is not easy to clean, so that the use experience of a user is affected. Moreover, the connection holes on the panel of the home appliance also affect the integrated aesthetics of the panel.

Of course, the household electrical appliance can also adopt a magnetic knob, and although the problem of panel perforation is solved, the magnetic knob mostly lacks the use hand feeling, and is difficult to bring good touch feedback to users.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a knob device and household electrical appliances, and knob device structure is ingenious, and when convenient user clean household electrical appliances's fixed panel, knob device still has the use feel of preferred, can bring good operation sense of touch feedback for the user.

In a first aspect, the present application provides a knob device for being assembled at an outside of a fixing panel of a home appliance, the knob device comprising:

a base configured to be detachably attached to an outer side of the fixed panel and capable of maintaining a fixed state with respect to the fixed panel;

the rotating body is arranged on the seat body and can rotate relative to the seat body;

wherein, the seat body can apply the damping force opposite to the rotation direction to the rotating body when the rotating body rotates relative to the seat body.

The knob device according to the first aspect of the application has at least the following advantages:

the knob device of this application sets up through the cooperation of pedestal, spiral body and household electrical appliances's fixed panel, when making things convenient for the clean household electrical appliances's of user fixed panel, knob device still has the use feel of preferred, can bring good operation sense of touch feedback for the user.

In some embodiments, the rotor is rotatably mounted to the housing by a bearing member configured to apply a damping force to the rotor as the rotor rotates relative to the housing.

In some embodiments, the knob device further comprises: the magnetic piece is rotatably arranged on the base body, and the bearing piece is in transmission connection with the magnetic piece so as to drive the magnetic piece to rotate relative to the base body; the induction piece is arranged on the inner side of the fixed panel and opposite to the magnetic piece, and is configured to detect the change of a magnetic field signal of the magnetic piece when the magnetic piece rotates relative to the base body and determine the rotation angle of the rotator according to the change of the magnetic field signal.

In some embodiments, the magnetic member and the sensing member are each configured in a columnar structure, and a central axis of the magnetic member coincides with a central axis of the sensing member, and the central axis of the magnetic member is offset from the central axis of the bearing member.

In some embodiments, the outer peripheral wall of the bearing member has engagement teeth, and the magnetic member is engaged with the engagement teeth through a transmission gear.

In some embodiments, the rotator can be elastically pressed to move towards the base body and drive the magnetic member to move towards the fixed panel through the bearing member, and the sensing member is configured to detect a change in a magnetic field signal of the magnetic member when the magnetic member moves towards the fixed panel and determine a displacement amount of the rotator according to the change in the magnetic field signal.

In some embodiments, the base body is movably provided with a supporting member, the bearing member is rotatably mounted on the supporting member, and a compression elastic member is arranged between the supporting member and the base body.

In some embodiments, the base is further provided with a limiting support, the supporting piece is slidably connected with the limiting support, the limiting support is provided with a limiting portion, and the limiting portion is located at the top end of the supporting piece and is in butt fit with the supporting piece.

In some embodiments, the base is further provided with a first magnetic attraction piece, the fixed panel is provided with a second magnetic attraction piece opposite to the first magnetic attraction piece, and magnetic attraction can be generated between the first magnetic attraction piece and the second magnetic attraction piece so as to fix and attach the base on the outer surface of the fixed panel.

In a second aspect, an embodiment of the present application provides an electric home appliance, including the knob device described above.

The household electrical appliance according to the second aspect of the application has at least the following beneficial effects:

the household electrical appliance provided by the application has the same technical effect that the knob device brings because of being provided with the knob device, namely, the knob device is convenient for a user to clean the fixed panel of the household electrical appliance and has better use handfeel when being matched with the fixed panel of the household electrical appliance through the seat body, the rotating body and the fixed panel of the household electrical appliance, and can bring good operation touch feel feedback to the user.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

fig. 1 is a schematic structural view of a knob device according to an embodiment of the present application.

Fig. 2 is a partial enlarged view at a in fig. 1.

Reference numerals illustrate: a fixed panel 100; a second magnetic attraction member 110; a base 200; a support 210; compressing the elastic member 220; a limit bracket 230; a limit part 231; a first magnetic attraction member 240; a rotator 300; a bearing member 400; a magnetic member 500; a sensing piece 600; a transmission gear 700; control panel 800.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

At present, a knob configured on a household appliance (such as a gas stove, an electromagnetic oven, a microwave oven, an electric cooker, a refrigerator, an air conditioner and the like) is generally a mechanical knob, and the mechanical knob needs to be perforated on a panel of the household appliance so as to mechanically connect a knob cap with a rotating shaft inside the panel.

However, in the household electrical appliance equipped with the mechanical knob, the tightness between the rotating shaft and the connecting hole is poor, impurities such as dust and greasy dirt easily enter the connecting hole, and the household electrical appliance is not easy to clean, so that the use experience of a user is affected. Moreover, the connection holes on the panel of the home appliance also affect the integrated aesthetics of the panel.

Of course, the household electrical appliance can also adopt a magnetic knob, and although the problem of panel perforation is solved, the magnetic knob mostly lacks the use hand feeling, and is difficult to bring good touch feedback to users.

Based on this, referring to fig. 1 and 2, the present application provides a knob device for being assembled at the outside of a fixing panel 100 of a home appliance, the knob device including a housing 200 and a rotator 300.

The base 200 is configured to be detachably attached to the outside of the fixed panel 100, and the base 200 can be maintained in a fixed state with respect to the fixed panel 100. The rotator 300 is provided on the base 200, and the rotator 300 can rotate relative to the base 200. The housing 200 can apply a damping force to the spin body 300 opposite to the rotation direction when the spin body 300 rotates relative to the housing 200.

The knob device of the present application may be, but not limited to, applied to household electrical appliances such as gas cookers, induction cookers, microwave ovens, electric cookers, refrigerators, and air conditioners. When the knob device is configured on the home appliance, the fixing panel 100 can be understood as a panel structure of the home appliance, such as a glass panel of a gas cooker.

It can be understood that the fixing panel 100 of the home appliance has opposite upper and lower surfaces, the upper surface of the fixing panel 100 corresponds to an outer side surface of the fixing panel 100, and the lower surface of the fixing panel 100 corresponds to an inner side surface of the fixing panel 100. Taking the knob device as an example of being disposed on the gas range, the fixing panel 100 is understood as a glass panel of a base of the gas range, and the base 200 is detachably attached to an outer surface of the glass panel and can maintain a relatively fixed state.

In the knob device of the present application, the shape of the base 200 may be, but not limited to, rectangular, circular, etc. Likewise, the shape of the rotor 300 may be, but is not limited to, rectangular, circular, etc. The base 200 can be detachably attached to the outer side surface of the fixed panel 100 in a magnetic adsorption or adhesive manner, so that the base 200 and the rotating body 300 assembled on the base 200 can be integrally detached from the fixed panel 100, mechanical connecting holes for connecting with the base 200 are not required to be formed on the fixed panel 100, the integral cleaning of the fixed panel 100 of the household appliance is facilitated for a user, and the appearance consistency of the fixed panel 100 of the household appliance is also improved.

It will be understood that when the knob device of the present application is configured on a home appliance, a housing cavity is formed between the rotating body 300 and the base 200, a coupling component for electrically coupling with a controller (a control circuit is provided in the controller) of the home appliance can be disposed in the housing cavity, when a user operates the rotating body 300 to rotate the rotating body 300 relative to the base 200, the coupling component rotates along with the rotating body 300, and the rotation angles of the coupling component are different, so that different electrical signals are sent to the controller, so that the controller controls the start and stop, function switching, gear adjustment, running speed and the like of the home appliance, and thus, the home appliance is controlled by operating the rotating body 300 to rotate relative to the base 200.

In addition, in the knob device of the application, when the user operates the rotary body 300 to enable the rotary body 300 to rotate relative to the base body 200, the base body 200 can apply damping force opposite to the rotating direction to the rotary body 300, so that the user directly senses resistance when rotating the rotary body 300 to form clear rotation adjustment touch feeling, the whole use touch feeling of the knob device is improved, good operation touch feeling feedback is brought to the user, and the use experience of the user is improved.

It can be appreciated that the knob device of the present application has smart structure, and through the cooperation setting of the seat body 200, the rotating body 300 and the fixed panel 100 of the household electrical appliance, the knob device also has better use hand feeling when the user cleans the fixed panel 100 of the household electrical appliance, and can bring good operation touch feedback to the user.

In some embodiments of the present application, referring to fig. 1 and 2, the rotator 300 is rotatably mounted on the housing 200 by a bearing member 400, the bearing member 400 being configured to apply a damping force to the rotator 300 when the rotator 300 rotates relative to the housing 200.

Specifically, the bearing member 400 is a ball bearing, and it is readily understood that the ball bearing includes an inner race, an outer race, and a plurality of balls movably mounted between the inner race and the outer race. When the user rotates the rotator 300, rolling friction occurs between the balls on the ball bearing and the inner ring and the outer ring, and the inner ring and the outer ring apply a certain friction resistance to the balls. Because the rotating body 300 is driven to rotate by rolling between the inner ring and the outer ring through the balls on the bearing piece 400, the friction resistance generated on the ball bearing forms a damping force applied to the rotating body 300, the direction of the damping force is opposite to the rotating direction of the rotating body 300, and when a user rotates the rotating body 300, the rotating body 300 can be smoothly rotated only by applying a force larger than the damping force of the bearing piece 400, so that the user directly perceives the resistance when rotating the rotating body 300, thereby forming clear rotary adjusting touch feeling, improving the whole using touch feeling of the knob device, bringing good operation touch feedback to the user and improving the using experience of the user.

Of course, in other embodiments, the bearing member 400 may also be a driven gear rotatably mounted on the base 200, the rotating body 300 has a driving gear meshed with the driven gear, when the user rotates the rotating body 300, the driving gear on the rotating body 300 rotates along teeth of the driven gear, and the driving gear on the rotating body 300 and the driven gear on the base 200 are meshed for transmission, so as to form a section resistance to the rotating body 300, so that the user can directly feel resistance when rotating the rotating body 300, and the meshing transmission of the driving gear and the driven gear can make the user feel a well-defined rotation angle adjustment touch, so that the overall use feeling of the knob device is further improved, and the use experience of the user is improved.

Further, referring again to fig. 1 and 2, the knob device further includes a magnetic member 500 and a sensing member 600. The magnetic member 500 is rotatably mounted on the base 200, and the bearing member 400 is in transmission connection with the magnetic member 500 to drive the magnetic member 500 to rotate relative to the base 200.

The sensing piece 600 is disposed at the inner side of the fixing panel 100 and opposite to the magnetic piece 500, and the sensing piece 600 is configured to detect a change in a magnetic field signal of the magnetic piece 500 when the magnetic piece 500 rotates relative to the housing 200 and determine a rotation angle of the rotator 300 according to the change in the magnetic field signal.

Specifically, the seat body 200 and the rotating body 300 are in a circular shell state, the seat body 200 is provided with an annular groove for inserting the bottom of the rotating body 300, the bottom of the rotating body 300 is movably inserted in the annular groove to form an accommodating cavity with the seat body 200, and the magnetic piece 500 and the bearing piece 400 are both arranged in the mounting cavity, so that the functional stability of the magnetic piece 500 and the bearing piece 400 is prevented from being influenced by the fact that impurities such as external oil smoke and dust enter the seat body 200 and the rotating body 300.

The control board 800 of the home appliance is fixedly installed at the inner side of the fixing panel 100, and the sensing member 600 is fixed to the control board 800 and is in signal connection with the controller on the control board 800. The sensing element 600 is a 3D hall sensor, and the sensing element 600 and the magnetic element 500 are aligned vertically.

The induction element 600 and the magnetic element 500 form a coupling induction. Because the bearing member 400 is in transmission connection with the magnetic member 500 to drive the magnetic member 500 to rotate relative to the base 200, when the user operates the rotator 300 to rotate the rotator 300 around the central axis of the base 200, the rotator 300 drives the magnetic member 500 to synchronously rotate relative to the base 200 through the transmission action of the bearing member 400. That is, the rotation of the rotator 300 relative to the base 200 is synchronous with the rotation of the magnetic member 500 relative to the base 200, both of which rotate around the central axis of the base 200, and the rotation angle of the rotator 300 is equal to the rotation angle of the magnetic member 500.

When the rotator 300 drives the magnetic element 500 to rotate around the central axis of the base 200 synchronously, the position of the sensing element 600 is fixed, the position of the magnetic element 500 relative to the sensing element 600 changes continuously along with the rotation of the magnetic element 500, the sensing element 600 senses the synchronous change of the magnetic field signal of the magnetic element 500, the sensing element 600 determines the rotation angle of the magnetic element 500 and the rotator 300 by detecting the change of the magnetic field signal of the magnetic element 500 and according to the change of the magnetic field signal, and transmits the signal of the rotation angle to the controller on the control board 800. It is to be understood that different rotation angles of the rotating body 300 correspond to different control functions of the home appliance, such as different gears, start and stop of the home appliance, and the like, and after the controller obtains the detection signal of the sensing piece 600, the controller can control the start and stop of the home appliance, gear adjustment, and the like, so as to realize intelligent control of the home appliance.

It is to be understood that, the bearing piece 400 is in transmission connection with the magnetic piece 500, so that the magnetic piece 500 is driven to rotate relative to the base 200, the rotating body 300 can drive the magnetic piece 500 to rotate synchronously, the user can directly sense resistance force when rotating the rotating body 300, and the sensing piece 600 can detect and determine the rotating angle of the rotating body 300 in real time, so that intelligent control of household appliances is realized.

Further, referring again to fig. 1 and 2, the magnetic member 500 and the sensing member 600 are each configured in a cylindrical structure, and the central axis of the magnetic member 500 coincides with the central axis of the sensing member 600, and the central axis of the magnetic member 500 is offset from the central axis of the bearing member 400.

When the magnetic element 500 is a magnet and the sensing element 600 is a 3D hall sensor coupled to the magnet for sensing, the sensing element 600 is configured to detect the change of the magnetic induction intensity of the magnetic element 500 to obtain the change of the magnetic field signal of the magnetic element 500, and when the distance between the magnetic element 500 and the sensing element 600 is smaller, the magnetic induction intensity of the magnetic element 500 detected by the magnetic element 500 is the largest.

Specifically, in one embodiment, when the rotator 300 drives the magnetic element 500 to rotate around the central axis of the base 200 synchronously, the 3D hall sensor is fixed, the magnetic induction intensity generated by the magnet relative to the 3D hall sensor varies in a sine function, and the 3D hall sensor can map the rotation angle of the rotator 300 according to the function through the magnetic induction intensity variation corresponding to the magnet, so as to accurately detect and determine the rotation angle of the rotator 300. It is to be understood that different rotation angles of the rotating body 300 correspond to different control functions of the home appliance, such as different gears, start and stop of the home appliance, and the like, and after the controller obtains the detection signal of the sensing piece 600, the controller can control the start and stop of the home appliance, gear adjustment, and the like, so as to realize intelligent control of the home appliance.

Based on this, by arranging the central axis of the magnetic member 500 and the central axis of the sensing member 600 to coincide with each other, the magnetic induction intensity generated by the magnetic member 500 at the initial position (before rotation with the rotator) is maximized, and the sensing member 600 uses the initial position of the magnetic member 500 as a reference position for detecting the rotation angle of the rotator 300, so that the rotation angle of the rotator 300 can be detected and determined more accurately.

Moreover, through the central axis deviation of the magnetic part 500 relative to the central axis of the bearing part 400, on the basis of meeting the structure that the rotator 300 can rotate around the central axis of the rotator, the magnetic part 500 can be closer to the sensing part 600 in the synchronous rotation process of the rotator 300, the phenomenon that the sensing part 600 cannot accurately detect the magnetic induction intensity of the magnetic part 500 due to overlarge relative distance between the magnetic part 500 and the sensing part 600 is avoided, and the accuracy of the sensing part 600 in detecting the rotation angle of the rotator 300 is further improved.

Further, referring again to fig. 1 and 2, the bearing member 400 has engagement teeth (not shown) on an outer circumferential wall thereof, and the magnetic member 500 is engaged with the engagement teeth through the transmission gear 700.

Specifically, the magnetic member 500 is a bar magnet, the magnetic member 500 is vertically disposed on the base 200 and rotatably connected to the base 200, the lower end of the magnetic member 500 is mounted on the base 200 through a rotating bearing, the outer peripheral wall of the bearing member 400 has engaging teeth (not shown), and the upper end of the magnetic member 500 is engaged with the engaging teeth through the transmission gear 700.

It will be appreciated that when the user rotates the rotator 300 and drives the magnetic member 500 to rotate synchronously around the central axis of the base 200, on one hand, the bearing member 400 applies a damping force to the rotator 300, and on the other hand, the meshing transmission of the magnetic member 500, the transmission gear 700 and the bearing member 400 also indirectly applies a damping force to the rotator 300, so that the user obviously perceives a resistance sense when rotating the rotator 300, a clearer rotation adjustment touch sense is formed, and a higher operation touch sense feedback is further provided for the user.

Further, referring back to fig. 1 and 2, the rotator 300 can be elastically pressed to move toward the base 200 and drive the magnetic member 500 to move toward the fixed panel 100 through the bearing member 400, and the sensing member 600 is configured to detect a change in a magnetic field signal of the magnetic member 500 when the magnetic member 500 moves toward the fixed panel 100 and determine a displacement amount of the rotator 300 according to the change in the magnetic field signal.

It can be understood that when the rotator 300 is elastically pressed by the user, the rotator 300 moves linearly in a direction approaching to the seat 200, and the rotator 300 drives the magnetic member 500 to move synchronously, so that the displacement amounts of the magnetic member 500 and the rotator 300 are equal.

It will be understood that, in the process of moving the magnetic member 500 toward the fixed panel 100, the vertical distance between the magnetic member 500 and the sensing member 600 is reduced, and the sensing member 600 detects the increase of the magnetic induction intensity of the magnetic member 500, so that the change of the magnetic field signal of the magnetic member 500 is detected, the displacement amount of the rotator 300 is determined according to the change of the magnetic field signal, and the signal of the displacement amount of the rotator 300 is transmitted to the controller on the control board 800. Different displacement amounts of the rotary body 300 correspond to different control functions of the household electrical appliance, such as starting and stopping of the household electrical appliance, and after the controller obtains the detection signal of the sensing piece 600, the controller can control the starting and stopping of the household electrical appliance, so that intelligent control of the household electrical appliance is realized. When the user releases the rotator 300, the rotator 300 drives the magnetic element 500 to reset.

Further, referring to fig. 1 and 2, the support member 210 is movably provided on the housing 200, the bearing member 400 is rotatably mounted on the support member 210, and the compression elastic member 220 is provided between the support member 210 and the housing 200.

Specifically, the supporting member 210 has a plate-shaped structure, the seat body 200 is further provided with a limiting bracket 230, the supporting member 210 is slidably connected with the limiting bracket 230, the limiting bracket 230 is provided with a limiting portion 231, and the limiting portion 231 is located at the top end of the supporting member 210 and is in butt fit with the supporting member 210. The compression elastic member 220 is a compression spring, the lower end of the compression elastic member 220 is fixedly connected to the seat body 200, and the upper end of the compression elastic member 220 is connected to the support member 210.

It can be appreciated that the compression elastic member 220 provides a pressing buffer, and at the same time, the rotator 300 can elastically reset the magnetic member 500. The sliding connection between the supporting member 210 and the limiting bracket 230 enables the supporting member 210 to have only the freedom degree in the lifting direction, so as to improve the lifting straightness of the rotator 300 and the magnetic member 500. The limiting part 231 on the limiting support 230 effectively prevents the supporting member 210 from being separated from the base 200 under the excessive elastic restoring force, and improves the stability of the rotating body 300 for driving the magnetic member 500 to do lifting motion.

In addition, it should be noted that, in order to provide a certain lifting displacement space for the rotator 300 and the magnetic element 500, the base 200 is respectively provided with a first cavity (not shown in the drawing) and a second cavity (not shown in the drawing), the bottom end of the rotator 300 is movably inserted into the first cavity and has a distance from the bottom of the first cavity, and similarly, the bottom end of the magnetic element 500 is movably inserted into the second cavity and has a distance from the second cavity. Thus, on the basis of ensuring that the rotating body 300 can be completely covered on the seat body 200, the rotating body 300 and the magnetic piece 500 both have proper lifting displacement space, and the stability of the lifting movement of the rotating body 300 to drive the magnetic piece 500 is ensured.

In some embodiments of the present application, referring to fig. 1 and 2 again, the base 200 is further provided with a first magnetic attraction member 240, and the fixing panel 100 is provided with a second magnetic attraction member 110 opposite to the first magnetic attraction member 240, and a magnetic attraction force can be generated between the first magnetic attraction member 240 and the second magnetic attraction member 110, so as to fix the base 200 on the outer surface of the fixing panel 100.

Specifically, the first magnetic attraction member 240 and the second magnetic attraction member 110 are bar magnets that attract each other. The first and second magnetic attraction pieces 240 and 110 may be provided in plurality so that the base 200 can be stably attached to the outer surface of the fixed panel 100.

It can be appreciated that the base 200 is fixed and attached to the outer surface of the fixed panel 100 by means of magnetic attraction, so that no mechanical connection hole is required to be formed on the fixed panel 100, and impurities such as oil smoke, water vapor, dust and the like are directly avoided from entering the fixed panel 100.

Moreover, when the user needs to detach the knob device integrally, the user only needs to pull the seat body 200 upwards, and the seat body 200 and the rotator 300 assembled on the seat body 200 can be taken out integrally by overcoming the magnetic attraction force, so that the user can clean the surface of the fixed panel 100 integrally. The knob device can move relative to the fixed panel 100 and separate from the fixed panel, so that the intelligent degree of the household appliance is improved, and the use experience of a user is improved.

In addition, the application also provides household electrical equipment, and the household electrical equipment comprises the knob device in any embodiment.

The household electrical appliance can be, but is not limited to, a gas cooker, an electromagnetic oven, a microwave oven, an electric cooker, a refrigerator, an air conditioner and the like. When the knob device is configured on the home appliance, the fixing panel 100 can be understood as a panel structure of the home appliance, such as a glass panel of a gas cooker.

It will be appreciated that, since the above-mentioned knob device is configured in the household electrical appliance of the present application, the same technical effects brought by the knob device are also provided, that is, the user can conveniently clean the fixed panel 100 of the household electrical appliance while the user can conveniently use the knob device to have better use hand feeling through the cooperation of the base 200, the rotating body 300 and the fixed panel 100 of the household electrical appliance, and good operation touch feedback can be brought to the user.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A knob device for being assembled on the outer side of a fixing panel of a home appliance, comprising:

a base configured to be detachably attached to an outer side of the fixed panel and capable of maintaining a fixed state with respect to the fixed panel;

the rotating body is arranged on the seat body and can rotate relative to the seat body;

wherein, the seat body can apply the damping force opposite to the rotation direction to the rotating body when the rotating body rotates relative to the seat body.

2. The knob assembly according to claim 1, wherein the rotator is rotatably mounted on the housing by a bearing member configured to apply a damping force to the rotator when the rotator rotates relative to the housing.

3. The knob device according to claim 2, further comprising:

the magnetic piece is rotatably arranged on the base body, and the bearing piece is in transmission connection with the magnetic piece so as to drive the magnetic piece to rotate relative to the base body;

the induction piece is arranged on the inner side of the fixed panel and opposite to the magnetic piece, and is configured to detect the change of a magnetic field signal of the magnetic piece when the magnetic piece rotates relative to the base body and determine the rotation angle of the rotator according to the change of the magnetic field signal.

4. The knob assembly according to claim 3, wherein the magnetic member and the sensing member are each constructed in a cylindrical structure, and a central axis of the magnetic member coincides with a central axis of the sensing member, and the central axis of the magnetic member is offset from a central axis of the bearing member.

5. The knob assembly according to claim 3, wherein the bearing member has engagement teeth on an outer peripheral wall thereof, and the magnetic member is engaged with the engagement teeth through a transmission gear.

6. The knob device according to claim 3, wherein the rotator is capable of being elastically pressed to move toward the housing and move the magnetic member toward the fixing panel by the bearing member, and the sensing member is configured to detect a change in a magnetic field signal of the magnetic member when the magnetic member moves toward the fixing panel and determine a displacement amount of the rotator according to the change in the magnetic field signal.

7. The knob assembly according to claim 6, wherein the housing is movably provided with a supporting member, the bearing member is rotatably mounted on the supporting member, and a compression elastic member is provided between the supporting member and the housing.

8. The knob device according to claim 7, wherein the seat body is further provided with a limiting bracket, the supporting member is slidably connected with the limiting bracket, the limiting bracket is provided with a limiting portion, and the limiting portion is located at the top end of the supporting member and is in abutting fit with the supporting member.

9. The knob assembly according to any one of claims 1 to 8, wherein the housing is further provided with a first magnetic member, the fixing panel is provided with a second magnetic member opposite to the first magnetic member, and a magnetic attraction force can be generated between the first magnetic member and the second magnetic member to fixedly attach the housing to an outer surface of the fixing panel.

10. An electric household appliance comprising a knob device according to any one of claims 1 to 9.